Claims:We Claim:
1. A fan shroud for a vehicle, comprising:
a fan for blowing air;
a motor for driving the fan;
a shroud including a body having a vent hole formed at the center thereof and a motor fixing part fixing and supporting the motor disposed at the center of the vent hole in a state in which it is supported and formed by a plurality of stators extended from a plurality of points of an inner peripheral surface of the vent hole in a centrifugal direction; and
an opening or closing means provided on the body and controlling introduction of the driving wind depending on whether or not the vehicle is driven,
wherein the opening or closing means includes:
an air introduction part opened and formed on the body so that the driving wind is introduced into a heat exchanger; and
a door part including a shaft coupled to an upper circumference of the air introduction part so as to be freely rotatable in order to control the introduction of the driving wind depending on whether or not the vehicle is driven, and a door coupled to the shaft and closing or opening the air introduction part by rotation of the shaft.

2. The fan shroud for a vehicle of claim 1, wherein in the door part, the door is provided on a surface of the body toward the rear of the vehicle so as to be opened toward the rear of the vehicle, and has a cross-sectional area larger than that of the air introduction part so as not to be opened toward the front of the vehicle.

3. The fan shroud for a vehicle of claim 1, wherein the air introduction part includes:
a first rotation coupling part formed in a closed ring shape so that one side of the shaft is fitted thereinto in an axial direction; and
a second rotation coupling part formed in a ring shape having an opening part formed so that the other side of the shaft is fitted thereinto in a radial direction, and
the opening part has a width smaller than a diameter of the shaft.

4. The fan shroud for a vehicle of claim 1, wherein a door contact part contacting a surface of the door toward the front of the vehicle at the time of closing the door is formed along a circumferential surface of the air introduction part so as to protrude toward the rear of the vehicle,
the door contact part includes side surface contact parts each formed in a length direction of the vehicle at both sides in a width direction of the vehicle and a lower contact part formed in the width direction of the vehicle at a lower portion of the vehicle, and
the side surface contact parts have a protrusion length that becomes long toward the lower portion of the vehicle so that the door is closed in a state in which a lower end portion thereof is inclined toward the rear of the vehicle at the time of closing the door.

5. The fan shroud for a vehicle of claim 3, wherein the first rotation coupling part is provided with a stopper limiting rotation of the door so that the door is not opened at a predetermined angle or more.

6. The fan shroud for a vehicle of claim 3, wherein a head part having a diameter larger than that of the shaft is formed at the other side of the shaft, and the diameter of the head part is larger than an inner diameter of the first rotation coupling part.

7. The fan shroud for a vehicle of claim 1, further comprising a blocking part extended from the body in a downward direction so as to enclose an upper portion of the door part toward the front of the vehicle.

8. The fan shroud for a vehicle of claim 7, wherein the blocking part is extended in the downward direction so that a linear length from the center of the shaft to the blocking part at the front of the vehicle is smaller than a linear length from the center of the shaft to the uppermost end of the door part at the rear of the vehicle.

Dated this on 3rd day of February 2016.
, Description:

FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)

1. ' Fan Shroud for Motor Vehicle '

2.
1. (A) Hanon Systems
(B) Republic of Korea
(C) 95, Sinilseo-ro, Daedeok-gu, Daejeon, 34325 Republic of Korea

The following specification particularly describes the invention and the manner in which it is to be performed.

CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2015-0018690, filed on February 06, 2015, and Korean Patent Application No. 10-2015-0121102, filed on August 27, 2015, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD
[0002] The following disclosure relates to a fan shroud for a vehicle. More particularly, the following disclosure relates to a fan shroud for a vehicle that is capable of improving air-blowing efficiency through rotation of a fan at the time of stopping the vehicle and improving heat-exchange efficiency of a heat exchanger provided in an engine room of the vehicle through an increase in an amount of introduced driving wind at the time of driving the vehicle by including an opening or closing means controlling introduction and discharge of the driving wind and is capable of preventing deterioration of wind-amount performance due to leakage of air by blocking a gap generated between the shroud and the opening or closing means to minimize air leaked through the gap.

BACKGROUND
[0003] Generally, an engine room of a vehicle is provided with an engine, a cooling device for cooling the engine, an air conditioning device, and the like. The cooling device, which is to cool the engine of the vehicle, is configured to include a radiator for cooling a coolant of the engine and a fan shroud generating an air flow of the radiator to improve heat radiation efficiency of a surface of the radiator, thereby further promoting cooling efficiency of the coolant.
[0004] The fan shroud is configured to blow air to an air cooling type heat exchanger such as the radiator, a condenser, or the like, of the vehicle in order to promote heat radiation of the air cooling type heat exchanger, and is classified into a pusher type fan shroud and a puller type fan shroud depending on a form in which the heat exchanger is disposed.
[0005] The pusher type fan shroud is a type in which an axial-flow fan is disposed in front of the heat exchanger in the vehicle to forcibly blow air from the front of the vehicle toward the rear of the vehicle. Since air-blowing efficiency of the pusher type fan shroud for the heat exchanger is low, the pusher type fan shroud is used in the case in which a margin space behind the heat exchanger within the engine room is narrow. On the other hand, the puller type fan shroud is a type in which an axial-flow fan is disposed behind the heat exchanger in the vehicle to pull air in front of the heat exchanger in the vehicle, thereby allowing the air to pass through the heat exchanger. Since air-blowing efficiency of the puller type fan shroud is relatively higher than that of the pusher type fan shroud, the puller type fan shroud has been used in most of vehicles.
[0006] A perspective view of a fan shroud F for a vehicle according to the related art is illustrated in FIG. 1, and a front view of the fan shroud F for a vehicle according to the related art is illustrated in FIG. 2.
[0007] Referring to FIGS. 1 and 2, the fan shroud F fixed to a rear end of the heat exchanger in order to introduce cooled air into the heat exchanger indicates an assembly of a fan 10 and a shroud 30, and is configured to include the fan 10 for blowing air, a motor 20 for driving the fan 10, and the shroud 30 including a body 31 having a vent hole formed at the center thereof and a motor fixing part 32 fixing and supporting the motor 20 disposed at the center of the vent hole in a state in which it is supported and formed by a plurality of stators 33 extended from a plurality of points of an inner peripheral surface of the vent hole in a centrifugal direction.
[0008] The fan shroud F for a vehicle according to the related art having the configuration as described above has an advantage that cooling performance of the heat exchanger may be improved using forcible air-blowing by rotation of the fan 10 at the time of stopping the vehicle, but has a disadvantage that a portion other than the vent hole on the body 31 is closed at the time of driving the vehicle, such that introduction of the driving wind is hindered by a closed area on the body 31 to deteriorate cooling performance of the heat exchanger.
[0009] A technology related to a fan shroud in which an air inlet is formed in a closed portion on the body 31 has been disclosed in order to solve the problem as described above. However, in this technology, air blown to the heat exchanger through rotation of the fan flows backward through the air inlet at the time of stopping the vehicle at which the driving wind is not generated, such that cooling performance of the heat exchanger is deteriorated.

SUMMARY
[0010] An embodiment of the present invention is directed to providing a fan shroud for a vehicle including an opening or closing means formed on a closed surface of a body other than a vent hole of the fan shroud, controlling introduction and discharge of the driving wind, maintained in a closed state at the time of stopping the vehicle to improve air-blowing efficiency, and opened at the time of driving the vehicle to improve introduction efficiency of the driving wind.
[0011] Particularly, an embodiment of the present invention is directed to providing a fan shroud for a vehicle capable of reducing an assembling man hour by configuring a door so as to be coupled onto the body of the fan shroud in a one-touch scheme and improving assembling quality by using a structure in which the door may not be assembled in a reverse direction.
[0012] In addition, an embodiment of the present invention is directed to providing a fan shroud for a vehicle capable of preventing deterioration of wind amount performance due to leakage of air by blocking a gap generated between a shroud and an opening or closing means to minimize the air leaked through the gap.
[0013] In one general aspect, a fan shroud for a vehicle includes: a fan for blowing air; a motor for driving the fan; a shroud 100 including a body 111 having a vent hole formed at the center thereof and a motor fixing part 112 fixing and supporting the motor disposed at the center of the vent hole in a state in which it is supported and formed by a plurality of stators 113 extended from a plurality of points of an inner peripheral surface of the vent hole in a centrifugal direction; and an opening or closing means 200 provided on the body 111 and controlling introduction of the driving wind depending on whether or not the vehicle is driven, wherein the opening or closing means 200 includes: an air introduction part 210 opened and formed on the body so that the driving wind is introduced into a heat exchanger; and a door part 220 including a shaft 222 coupled to an upper circumference of the air introduction part so as to be freely rotatable in order to control the introduction of the driving wind depending on whether or not the vehicle is driven, and a door 221 coupled to the shaft 222 and closing or opening the air introduction part 210 by rotation of the shaft 222.
[0014] In the door part 220, the door 221 may be provided on a surface of the body 111 toward the rear of the vehicle so as to be opened toward the rear of the vehicle, and may have a cross-sectional area larger than that of the air introduction part 210 so as not to be opened toward the front of the vehicle.
[0015] The air introduction part 210 may include: a first rotation coupling part 213 formed in a closed ring shape so that one side of the shaft is fitted thereinto in an axial direction; and a second rotation coupling part 214 formed in a ring shape having an opening part 216 formed so that the other side of the shaft is fitted thereinto in a radial direction, and the opening part 216 may have a width smaller than a diameter of the shaft 222.
[0016] A door contact part 212 contacting a surface of the door 221 toward the front of the vehicle at the time of closing the door 221 may be formed along a circumferential surface of the air introduction part 210 so as to protrude toward the rear of the vehicle, the door contact part 212 may include side surface contact parts 212a each formed in a length direction of the vehicle at both sides in a width direction of the vehicle and a lower contact part 212b formed in the width direction of the vehicle at a lower portion of the vehicle, and the side surface contact parts 212a may have a protrusion length that becomes long toward the lower portion of the vehicle so that the door 221 is closed in a state in which a lower end portion thereof is inclined toward the rear of the vehicle at the time of closing the door 221.
[0017] The first rotation coupling part 213 may be provided with a stopper 215 limiting rotation of the door 221 so that the door 221 is not opened at a predetermined angle or more.
[0018] A head part 223 having a diameter larger than that of the shaft 222 may be formed at the other side of the shaft 222, and the diameter of the head part 223 is larger than an inner diameter of the first rotation coupling part 213.
[0019] The fan shroud for a vehicle may further include a blocking part 230 extended from the body 111 in a downward direction so as to enclose an upper portion of the door part 220 toward the front of the vehicle.
[0020] The blocking part 230 may be extended in the downward direction so that a linear length L1 from the center of the shaft 222 to the blocking part 230 at the front of the vehicle is smaller than a linear length L2 from the center of the shaft 222 to the uppermost end of the door part 220 at the rear of the vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is an entire perspective view of a fan shroud for a vehicle according to the related art.
[0022] FIG. 2 is a front view of the fan shroud for a vehicle according to the related art.
[0023] FIG. 3 is an entire perspective view of a fan shroud for a vehicle according to an exemplary embodiment of the present invention.
[0024] FIG. 4 is a front view of the fan shroud for a vehicle according to an exemplary embodiment of the present invention.
[0025] FIG. 5 is a perspective view of an opening or closing means according to an exemplary embodiment of the present invention.
[0026] FIG. 6 is a perspective view of an air introduction part according to an exemplary embodiment of the present invention.
[0027] FIG. 7 is a cross-sectional view of the opening or closing means according to an exemplary embodiment of the present invention (at the time of closing a door).
[0028] FIG. 8 is a cross-sectional view of the opening or closing means according to an exemplary embodiment of the present invention (at the time of opening the door).
[0029] FIG. 9 is a perspective view of the door according to an exemplary embodiment of the present invention.
[0030] FIG. 10 is a perspective view of the opening or closing means according to an exemplary embodiment of the present invention (at the time of closing the door) when viewed from the front of the vehicle.
[0031] FIG. 11 is a perspective view of the opening or closing means according to an exemplary embodiment of the present invention (at the time of opening the door) when viewed from the front of the vehicle.
[0032] FIG. 12 is an enlarged cross-sectional view of a blocking part of the fan shroud for a vehicle according to an exemplary embodiment of the present invention.
[Detailed Description of Main Elements]
1000: fan shroud for vehicle
100: shroud 111: body
112: motor fixing part 113: stator
200: opening or closing means 210: air introduction part
211: air introduction hole 212: door contact part
212a: side surface contact part 212b: lower contact part
213: first rotation coupling part 214: second rotation coupling part
215: stopper 216: opening part
220: door part 221: door
222: shaft 223: head part
230: blocking part

DETAILED DESCRIPTION OF EMBODIMENTS
[0033] Hereinafter, a fan shroud for a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0034] An entire perspective view of a fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention is illustrated in FIG. 3, and a front view of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention is illustrated in FIG. 4.
[0035] As illustrated in FIGS. 3 and 4, the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention is fixed to a rear end of a heat exchanger for a vehicle in order to introduce cooled air into the heat exchanger, and is configured to include a fan for blowing air, a motor for driving the fan, and a shroud 100 including a body 111 having a vent hole formed at the center thereof and a motor fixing part 112 fixing and supporting the motor disposed at the center of the vent hole in a state in which it is supported and formed by a plurality of stators 113 extended from a plurality of points of an inner peripheral surface of the vent hole in a centrifugal direction. Since the fan according to the present invention may be an axial-flow fan that is generally used, a detailed description for the fan will be omitted.
[0036] The motor, which is a driving source allowing air to be blown while rotating the fan in the same direction in order to cool a heat exchange medium passing through an inner portion of the heat exchanger for a vehicle, may be a motor driven by general direct current (DC) or alternating current (AC).
[0037] The shroud 100 is a member guiding the air-blowing generated by the rotation of the fan by the motor and fixed to the heat exchanger for the vehicle in a state in which it supports the motor, which is the driving source.
[0038] The shroud 100 has the vent hole formed at the center thereof in order to guide the sucked blown air in an axial direction, and includes the body 111 having a quadrangular shape corresponding to a shape of the heat exchanger so that a rear surface thereof may contact the entire rear surface of the heat exchanger and formed of a synthetic resin. Here, the vent hole of the shroud 100 may be formed in a circular shape in order to reduce wind pressure loss to improve air-blowing efficiency of the fan.
[0039] In addition, the shroud 100 is provided with the motor fixing part 112 fixing and supporting the motor disposed at the center of the vent hole in the state in which it is supported and formed by the plurality of stators 113 extended from the plurality of points of the inner peripheral surface of the vent hole in the centrifugal direction.
[0040] The fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention includes an opening or closing means 200 including an air introduction part 210 formed in a closed part other than the vent hole on the body 111 to introduce the air into the heat exchanger at the time of driving the vehicle, a door part 220 closing the air introduction part 210 so that the air introduced into the heat exchanger through the vent hole of the body 111 does not flow backward at the time of stopping the vehicle, and a blocking part 230 (see FIGS. 10 to 12) extended from the body 111 so as to enclose an upper portion of the door part 220 toward the front of the vehicle.
[0041] The opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0042] FIG. 5 is a perspective view illustrating an opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention, FIG. 6 is a perspective view illustrating an air introduction part 210 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention, FIG. 7 is a cross-sectional view illustrating the opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention at the time of closing a door 221, FIG. 8 is a cross-sectional view illustrating the opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention at the time of opening the door 221, FIG. 9 is a perspective view illustrating the door part 220 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention, FIG. 10 is a perspective view illustrating the opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention at the time of closing the door 221 when viewed from the front of the vehicle, FIG. 11 is a perspective view illustrating the opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention at the time of opening the door 221 when viewed from the front of the vehicle, and FIG. 12 is an enlarged cross-sectional view illustrating a blocking part 230 of the fan shroud 100 for a vehicle according to an exemplary embodiment of the present invention.
[0043] As illustrated in FIG. 5, the opening or closing means 200 is configured to include the air introduction part 210 formed in a region other than the vent hole on the body 111 and the door part 220 closing or opening the air introduction part 210 depending on whether or not the driving wind is introduced.
[0044] Referring to FIGS. 5 through 8, the air introduction part 210 is configured to include an air introduction hole 211 penetrating through the body part 111 in front and rear directions of the vehicle so that the driving wind is introduced, a door contact part 212 formed along a circumference of the air introduction hole 211, and contacting a surface of the door toward the rear of the vehicle to close the air introduction hole 211 when the door part 220 closes the air introduction hole 211, and a first rotation coupling part 213 and a second rotation coupling part 214 formed at an upper side of the air introduction hole 211, formed at both sides of the air introduction hole 211 in an axial direction of the vehicle, respectively, and coupled to a shaft 222 of the door 221.
[0045] Although the case in which the air introduction hole 211 has a rectangular shape of which a width is longer than a length has been illustrated, a size and a shape of the air introduction hole 211 may be changed depending on a shape of the body 111 or a position of the body 111 in which the air introduction hole 211 is formed.
[0046] The door contact part 212 is formed along the circumference of the air introduction hole 211, and may protrude from a surface of the air introduction part 210 toward the rear of the vehicle toward the rear of the vehicle.
[0047] In addition, the door contact part 212 may include side surface contact parts 212a each formed in a length direction of the vehicle at both sides of the air introduction hole 211 in a width direction of the vehicle and a lower contact part 212b formed in the width direction of the vehicle at a lower side of the air introduction hole 211.
[0048] Here, as illustrated in FIGS. 7 and 8, the side surface contact part 212a may be formed to have a protrusion length that becomes long toward a lower side of the vehicle. That is, the lower contact part 212b may be formed to have a protrusion length corresponding to a protrusion length of a lower end of the side surface contact part 212a.
[0049] This is to close the door 221 of the door part 220 in a state in which a lower end portion of the door 221 is inclined toward the rear of the vehicle through the door contact part 212 at the time of closing the door 221. In the case in which the door 221 is closed so that the lower end portion thereof is inclined toward the rear of the vehicle, it is possible to prevent the door 221 from being opened at the time of vibrations of the vehicle, and it is possible to prevent the door 221 from being opened particularly even in the case in which the vehicle is stopped on an ascent road.
[0050] In addition, a door protecting part 210a is formed at an outer side of a circumferential surface of the door contact part 212 in order to prevent movement of the fan shroud 1000 for a vehicle or damage to the door part 220 at the time of assembling the vehicle. The door protecting part 210a is formed along a circumference of the air introduction part 210. In more detail, the door protecting part 210a is formed to be spaced apart from a circumference of the door contact part 212 outwardly, and is extended toward the rear of the vehicle. An extended length of the door protecting part 210a may be longer than the protrusion length of the lower contact part 212b. In more detail, when the door 221 contacts the door contact part 212, the door protecting part is further extended toward the rear of the vehicle as compared with the door 221.
[0051] The first rotation coupling part 213 is formed at the upper side of the air introduction hole 211, and may be formed at one side of the air introduction hole 211 in the width direction of the vehicle. The first rotation coupling part 213 is configured so that one side of the shaft 222 is coupled thereto so as to be freely rotatable in the axial direction. The first rotation coupling part 213 may be formed in a closed ring shape so that the shaft 222 is fitted thereinto in the axial direction.
[0052] The second rotation coupling part 214 is formed at the upper side of the air introduction hole 211, and may be formed at the other side of the air introduction hole 221 in the width direction of the vehicle. The second rotation coupling part 214 is configured so that the other side of the shaft 222 is coupled thereto so as to be freely rotatable in the axial direction. The second rotation coupling part 214 may be formed in a ring shape having an opening part 216 formed so that the shaft 222 is fitted thereinto in a radial direction.
[0053] That is, in the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention, the door part 220 may be simply assembled to the air introduction part 210 through configurations of the first rotation coupling part 213 and the second rotation coupling part 214.
[0054] In detail, one side of the shaft 222 of the door part 220 is fitted into the first rotation coupling part 213 in the axial direction, and the other side of the shaft 222 of the door part 220 is fitted into the second rotation coupling part 214 in the radial direction through the opening part 216 of the second rotation coupling part 214, thereby making it possible to complete the assembling of the door part 220.
[0055] Here, the opening part 216 has a width smaller than a diameter of the shaft 222 to prevent separation of the shaft 222 when the assembling of the door part 220 is completed.
[0056] In addition, the first rotation coupling part 213 may be provided with a stopper 215 limiting a rotation radius of the shaft 222 so that the door 221 is not opened at a predetermined angle or more.
[0057] Referring to FIGS. 5 and 9, the door part 220 is configured to include the shaft 222 coupled to an upper side of the air introduction part 210 and rotated in the axial direction to control the door 221 to be closed or opened and the door 221 formed below the shaft 222 and closing or opening the air introduction hole 211 by the rotation of the shaft 222.
[0058] Here, the door 221 is provided on a surface of the body 111 toward the rear of the vehicle so as to be opened by the driving wind introduced from the front of the vehicle to introduce the driving wind, and may be formed to be opened toward the rear of the vehicle.
[0059] In addition, the door 221 may have a cross-sectional area larger than that of the air introduction hole 211 so as not to be opened toward the front of the vehicle by air introduced from the rear of the vehicle. Therefore, the door 221 may be configured to pass only air introduced from the front of the vehicle therethrough and block the air introduced from the rear of the vehicle.
[0060] For the purpose of the configuration as described above, the shaft 222 formed above the door 221 may be coupled to the first rotation coupling part 213 and the second rotation coupling part 214 of the air introduction part 210 so as to be freely rotatable.
[0061] In addition, a head part 223 having a diameter larger than that of the shaft 222 may be formed at the other side of the shaft 222. Here, the diameter of the head part 223 is larger than an inner diameter of the first rotation coupling part 213 to prevent the other side of the shaft 222 from being fitted into the first rotation coupling part 213 in the axial direction. Therefore, it is possible to prevent the door part 220 from being misassembled, through the head part 223 of the shaft 222.
[0062] As illustrated in FIGS. 7, 8, and 10 to 12, the opening or closing means 200 of the fan shroud 1000 for a vehicle according to an exemplary embodiment of the present invention further includes the blocking part 230 extended from the body 111 so as to enclose the upper portion of the door part 220 toward the front of the vehicle.
[0063] The blocking part 230 is extended from the body 111 of an upper end of the air introduction hole 211 in a downward direction so as to enclose the upper portion of the door part 220 toward the front of the vehicle.
[0064] That is, in the opening or closing means 200, after the shaft 222 is assembled to an upper circumference of the air introduction part 210 so as to be freely rotatable, the door part 220 sags in the downward direction by gravity, such that a gap is generated in a horizontal direction between the body part 111 and the door part 220.
[0065] That is, in the opening or closing means 200, the gap is generated in the horizontal direction between the body part 111 and the door part 220 by the gravity, and air is leaked through the gap, such that wind amount performance is deteriorated.
[0066] Therefore, the opening or closing means 200 includes the blocking part 230 enclosing the upper portion of the door part 220 toward the front of the vehicle to prevent the gap from being formed in the horizontal direction between the body 111 and the door part 220, thereby making it possible to minimize the air leaked through the gap.
[0067] Here, the blocking part 230 is formed so that a linear length L1 from the center of the shaft 222 to the blocking part 230 at the front of the vehicle is smaller than a linear length L2 from the center of the shaft 222 to the uppermost end of the door part 220 at the rear of the vehicle, as illustrated in FIG. 12.
[0068] That is, the blocking part 230 is extended in the downward direction so that the linear length L1 at the front of the vehicle is smaller than the linear length L2 at the rear of the vehicle to block the gap in the horizontal direction, thereby making it possible to minimize the air leaked through the gap and prevent the wind amount performance from being deteriorated.
[0069] The fan shroud according to an exemplary embodiment of the present invention having the configuration as described above improves air-blowing efficiency through rotation of the fan at the time of stopping the vehicle, improves both of air-blowing efficiency and driving wind introduction efficiency of the vehicle through an increase in an amount of introduced driving wind at the time of driving the vehicle, and improves cooling efficiency of the heat exchanger at the time of stopping the vehicle and at the time of driving the vehicle.
[0070] Particularly, the door mounted on the shroud body is configured so as to be assembled in a one-touch scheme, such that an assembling process is simplified, thereby improving productivity.
[0071] In addition, the door is configured so as not be assembled in a reverse direction, such that assembling quality is improved, thereby improving sensitive quality of a user.
[0072] Further, in the fan shroud for a vehicle according to an exemplary embodiment of the present invention, the gap between the shroud and the opening or closing means is blocked to minimize the air leaked through the gap, thereby making it possible to prevent the deterioration of the wind amount performance due to the leakage of the air.
[0073] The present invention is not to be construed as being limited to the above-mentioned exemplary embodiment. The present invention may be applied to various fields and may be variously modified by those skilled in the art without departing from the scope of the present invention claimed in the claims. Therefore, it is obvious to those skilled in the art that these alterations and modifications fall in the scope of the present invention.

We Claim:
1. A fan shroud for a vehicle, comprising:
a fan for blowing air;
a motor for driving the fan;
a shroud including a body having a vent hole formed at the center thereof and a motor fixing part fixing and supporting the motor disposed at the center of the vent hole in a state in which it is supported and formed by a plurality of stators extended from a plurality of points of an inner peripheral surface of the vent hole in a centrifugal direction; and
an opening or closing means provided on the body and controlling introduction of the driving wind depending on whether or not the vehicle is driven,
wherein the opening or closing means includes:
an air introduction part opened and formed on the body so that the driving wind is introduced into a heat exchanger; and
a door part including a shaft coupled to an upper circumference of the air introduction part so as to be freely rotatable in order to control the introduction of the driving wind depending on whether or not the vehicle is driven, and a door coupled to the shaft and closing or opening the air introduction part by rotation of the shaft.

2. The fan shroud for a vehicle of claim 1, wherein in the door part, the door is provided on a surface of the body toward the rear of the vehicle so as to be opened toward the rear of the vehicle, and has a cross-sectional area larger than that of the air introduction part so as not to be opened toward the front of the vehicle.

3. The fan shroud for a vehicle of claim 1, wherein the air introduction part includes:
a first rotation coupling part formed in a closed ring shape so that one side of the shaft is fitted thereinto in an axial direction; and
a second rotation coupling part formed in a ring shape having an opening part formed so that the other side of the shaft is fitted thereinto in a radial direction, and
the opening part has a width smaller than a diameter of the shaft.

4. The fan shroud for a vehicle of claim 1, wherein a door contact part contacting a surface of the door toward the front of the vehicle at the time of closing the door is formed along a circumferential surface of the air introduction part so as to protrude toward the rear of the vehicle,
the door contact part includes side surface contact parts each formed in a length direction of the vehicle at both sides in a width direction of the vehicle and a lower contact part formed in the width direction of the vehicle at a lower portion of the vehicle, and
the side surface contact parts have a protrusion length that becomes long toward the lower portion of the vehicle so that the door is closed in a state in which a lower end portion thereof is inclined toward the rear of the vehicle at the time of closing the door.

5. The fan shroud for a vehicle of claim 3, wherein the first rotation coupling part is provided with a stopper limiting rotation of the door so that the door is not opened at a predetermined angle or more.

6. The fan shroud for a vehicle of claim 3, wherein a head part having a diameter larger than that of the shaft is formed at the other side of the shaft, and the diameter of the head part is larger than an inner diameter of the first rotation coupling part.

7. The fan shroud for a vehicle of claim 1, further comprising a blocking part extended from the body in a downward direction so as to enclose an upper portion of the door part toward the front of the vehicle.

8. The fan shroud for a vehicle of claim 7, wherein the blocking part is extended in the downward direction so that a linear length from the center of the shaft to the blocking part at the front of the vehicle is smaller than a linear length from the center of the shaft to the uppermost end of the door part at the rear of the vehicle.

Dated this on 3rd day of February 2016.

ABSTRACT
Fan Shroud for MOTOR Vehicle
Provided is a fan shroud for a vehicle that is capable of improving air-blowing efficiency through rotation of a fan at the time of stopping the vehicle and improving heat-exchange efficiency of a heat exchanger provided in an engine room of the vehicle through an increase in an amount of introduced driving wind at the time of driving the vehicle by including an opening or closing means controlling introduction and discharge of the driving wind and is capable of preventing deterioration of wind-amount performance due to leakage of air by blocking a gap generated between the shroud and the opening or closing means to minimize air leaked through the gap.