[001] The present disclosure, in general, relates to a dual pole pedestal fan and more particularly, to a height adjustment system for dual pole pedestal fan. The height adjustment system makes the adjustment of fan more ergonomic. Additionally, the height adjustment system provides more stability to the fan and eliminates number of components which helps in increasing rigidity.
BACKGROUND OF THE INVENTION
[002] Pedestal fans have long been known in the prior art. Such fans are useful, when an elevated fan is desired which is portable and with adjustable air flow direction. Referring to Figure 1 illustrating a floor-standing pedestal fan 100 according to existing embodiment. The pedestal fan 100 comprises a fan assembly 101 driven by a motor assembly 102, a telescopic pole 103 and a base 104.
[003] The telescopic pole 103 is used to adjust the height of the pedestal fan 100. The fan assembly 101 is electrically connected to the motor assembly 102. Further, the fan assembly 101 is mounted on the motor assembly 102. One end of the telescopic pole 103 is connected to the motor assembly 102 and the other end of the telescopic pole 103 is connected to the base 104. The base 104 is usually provided to support the whole body of the pedestal fan 100 on the floor.
[004] There is provided a height adjustment assembly 105 in the middle of the telescopic pole 103. The height adjustment assembly 105 comprises a screw knob. Height of the pedestal fan 100 is adjusted by rotating the screw knob with one hand while simultaneously holding the motor assembly 102 of the pedestal fan 100 with the other hand to provide support to the pedestal fan 100 assembly.
[005] Some pedestal fan have dual poles to provide better stability to the assembly. Such a fan is described in Chinese Patent CN2303117Y which discloses a mechanism for adjusting height of a vertical pole of an electric fan, which is composed of a positioning pin, a positioning spring, a fixing plate, a pull rod, an elevating button, etc. The utility model is characterized in that a standing column is provided with a plurality of positioning slots with inclined planes, and the shape of one end of the positioning pin is corresponding to the shape of the positioning slots with inclined planes. When the elevating button is pulled, the positioning pin is withdrawn from one positioning slot, and is clamped into a positioning slot at the higher level. When an electric fan handle is pulled upwardly, the positioning pin is withdrawn from one positioning slot, is clamped into a positioning slot at the lower level. Thereby, the height adjustment of the vertical pole of the electric fan is completed.
[006] In all the existing embodiments, the height adjustment assembly is provided in the middle of the telescopic pole or the dual pole. To adjust the height of the fan, user has to bend down which makes the existing assemblies ergonomically inefficient. Further, user has to adjust the height of the pedestal fan from one hand while simultaneously holding the motor assembly with the other hand. This causes inconvenience to the user. The adjustment of the height is usually limited to the telescopic height of the pole. The motor assembly is connected to the bottom support through a knuckle. The knuckle is used as a linkage which makes the pedestal fan less stable.
[007] In dual pole pedestal fan, the height adjustment assembly has to maintain same level of height on the dual pole. User has to adjust the height on both the poles which is a tedious task.
[008] Therefore, there is a need to develop a height adjustment system for the dual pole pedestal fan which can adjust the level of height on both the poles simultaneously, and also obviate other drawbacks mentioned above.
OBJECT OF THE INVENTION
[009] It is therefore an object of the present invention, to solve the aforementioned and other drawbacks existing in the conventional pedestal fan assembly.
[0010] Another primary object of the present invention is to provide a height adjustment system for dual pole pedestal fan.
[0011] Yet another objective of the present invention is to provide a height adjustment system for dual pole pedestal fan through which user can adjust the height by pressing the knob.
[0012] Yet another object of the present invention is to provide a height adjustment system for dual pole pedestal fan which can maintain same level of height on both the poles.
[0013] Yet another object of the present invention is to provide a height adjustment system for dual pole pedestal fan from which user can adjust the height without bending.
[0014] Still another object of the present invention is to provide a height adjustment system for dual pole pedestal fan from which user can adjust the height with one hand.
[0015] Yet another object of the present invention is to provide a height adjustment system for dual pole pedestal fan through which height can be adjusted to any level on the dual poles.
[0016] Yet another object of the present invention is to provide a height adjustment system for dual pole pedestal fan which can slides to any level on the dual poles.
SUMMARY OF THE INVENTION
[0017] One or more drawbacks of conventional height adjustment system of pedestal fan, and additional advantages are provided through a height adjustment system for dual pole pedestal fan as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0018] The present subject matter relates to a height adjustment system for dual pole pedestal fan. The height adjustment system comprises a casing assembly with a casing top and a casing bottom, a pair of pole inserts at either end of the casing top, a knob movably attached to the casing bottom, a slider attached to the knob, a pair of bars having a slope profile part and a pair of springs. The casing top is configured to receive a motor assembly. The pair of pole inserts accommodates a pair of poles of the dual pole pedestal fan to facilitate sliding movement of casing assembly on the dual poles. The ends of the slider make surface contact with the pair of bars at a slope profiled part of the pair of bars. The pair of springs accommodating inner end of the bars are placed outside a bar motion restricting portion in the casing bottom. A plurality of slots is provided on the pair of poles for accommodating an outer end of the bars.
[0019] In an aspect, the slider and the pair of bars are made up of metal., plastics or a combination of metal and plastic.
[0020] In an aspect, the casing bottom comprises of a knob shaped depression for accommodating the knob.
[0021] In an aspect, the knob and the slider as attached to each other using a screw connection or a nut bolt connection or a snap fit connection or by glue.
[0022] In an aspect, the casing bottom has an inclined passage for accommodating the pair of bars.
[0023] In an aspect, the inclined passage makes an angle in the range of 0o to 45o with the horizontal.
[0024] In an aspect, the bar motion restricting portion is provided in middle of the inclined passage.
[0025] In an aspect, the bar motion restricting portion has plurality of holes for accommodating the inner end of the bars.
[0026] In an aspect, when the knob is pressed the slider slides on the sloped profiled part of the pair of bars resulting in simultaneous traverse movement of the bars towards each other.
[0027] In an aspect, during a locked position, the outer end of the bars are inside the slots provided on the pair of poles and the spring is in a decompressed state.
[0028] In an aspect, during an unlocked position, the outer end of the bars is outside the slots provided on the pair of poles, the spring is in a compressed state and the inner end of the bars is inside the bar motion restricting portion.
[0029] In an aspect, the casing bottom is provided with a plurality of pins and the knob is provided with a plurality of channels to accommodate the pins and to restrict the movement of the knob.
[0030] In an aspect, the casing bottom and casing upper are connected to each other using a screw connection, or a nut bolt connection or a snap fir connection or a glue.
[0031] In order to further understand the characteristics and technical contents of the present invention, a description relating thereto has been made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0032] Further objects and advantages of this invention will be more apparent from the description when read in conjunction with accompanying drawings of exemplary embodiments of invention and wherein:
[0033] Figure 1 illustrates a floor standing pedestal fan according to existing embodiment;
[0034] Figure 2 illustrates exploded view of the height adjustment system for dual pole pedestal fan, according to one of the embodiment of present subject matter.
[0035] Figure 3 illustrates top view of the casing bottom with assembled parts, according to one of the embodiment of the present subject matter;
[0036] Figure 4 illustrates top view of the inclined passage for pair of bars inside the casing assembly, according to one of the embodiment of the present subject matter;
[0037] Figure 5 illustrates the assembled height adjustment system according to one of the embodiment of present subject matter;
[0038] Figure 6 illustrates the height adjustment system in disengaged position (unlocked position), according to one of the embodiment of present subject matter; and
[0039] Figure 7 illustrates the height adjustment system in engaged position, according to one of the embodiment of present subject matter.
DETAILED DESCRIPTION OF THE INVENTION
[0040] The present invention discloses a height adjustment system 200 for dual pole pedestal fan through which user can adjust the height of the fan and motor assembly using only one hand.
[0041] Figure 2 illustrates exploded view of the height adjustment system 200 for dual pole pedestal fan according to one of the embodiment of present subject matter. The height adjustment system 200 comprises a casing assembly 201, a knob 202, a slider 203, a pair of bars 204 and a pair of springs 205.
[0042] The casing assembly 201 comprises a casing top 206 and a casing bottom 207. The casing top 206 and casing bottom 207 are connected to each other using a screw connection, or a nut bolt connection or a snap fit connection or through glue. The casing top 206 is configured to receive a motor assembly. A pair of pole inserts 208 are integrally molded on the casing top 206. The pole inserts 208 are provided at both ends of the casing top 206 to slidably engage with the dual poles 209 of the dual pole pedestal fan.
[0043] The casing bottom 207 has a depression 210 in the shape of the knob 202 to movably attach the knob 202. The depression 210 in the casing bottom 207 has plurality of pins 211 to engage with plurality of channels 212 provided on the knob 202. The engagement of plurality of pins 211 with the plurality of channels 212 ensure restricted sliding motion of knob 202 inside the casing assembly 201.
[0044] Referring to figure 3 illustrating top view of the casing bottom with assembled parts, according to one of the embodiment of the present subject matter. The casing bottom 207 has an inclined passage 301 provided to facilitate restricted sliding of the pair of bars 204 inside the casing assembly 201 to engage or disengage the height adjustment system 200 with the dual poles 209. A bar motion restricting portion 302 is provided in middle of the inclined passage 301 to restrict the further movement of the pair of bars 204. Further, the bar motion restricting portion 302 provides support to the springs 205 for to and fro motion. The bar motion restricting portion 302 has slots provided, so that, during compressed state of the pair of springs 205, end of the pair of bars 204 inside the casing assembly 201 can enter inside the bar motion restricting portion 302. The pair of bars 204 are placed in the inclined passage 301 provided in the casing bottom 207. One end of the pair of bars 204 are engaged with the corresponding springs 205 and other end of the bars 204 are free to engage with the dual poles 209. A slope profiled part 303 is integrally provided on the pair of bars 204 to restrict the movement of the pair of springs 205. One end of the pair of springs 205 is restricted by the sloped profiled part 303 and other end of the pair of springs 205 is restricted with the bar motion restricting portion 302.
[0045] The slider 203 is provided in the knob 202. A plurality of ribs are provided to eliminate the possibility of contact of the slider 203 with the knob 202. The plurality of pins 211 provided on the depression 210 engages with plurality of channels 212 provided on the knob 202. The engagement of plurality of pins 211 with the plurality of channels 212 ensure restricted sliding motion of knob 202 inside the casing assembly 201. The ends of the slider 203 engages with the integral slope profiled part 303of the pair of bars 204 to transfer the to and fro movement of the knob 202 to the pair of bars 204 to engage or disengage the pair of bars 204 with the dual poles 209 of the dual pole pedestal fan.
[0046] Figure 4 illustrates top view of the inclined passage for pair of bars inside the casing assembly, according to one of the embodiment of the present subject matter. The inclined passage 301 is inclined at an angle in the range of 0o to 45o. The inclination in the passage 301 is provided to facilitate movement of the pair of bars 204 inside the passage 301.
[0047] Referring to Figure 5 illustrating the assembled height adjustment system 200 according to one of the embodiment of present subject matter. The casing top 206 and casing bottom 207 are connected to each other using a screw connection, or a nut bolt connection or a snap fir connection or glue. The knob 202 is pressed to initiate height adjustment operation. The height adjustment system 200 engage with the dual poles 209 through the pair of pole inserts provided on the casing upper 206. A plurality of slots 501 are provided on the dual poles 209 to engage with the height adjustment system 200. When the height adjustment system 200 is engaged with the slots 501 on the dual pole 209, the height adjustment system 200 is in locked position. When the height adjustment system 200 is disengaged with the slots 501 on the dual pole 209, the height adjustment system 200 is in unlocked position.
WORKING OF THE HEIGHT ADJUSTMENT SYSTEM
[0048] Referring to figure 6 illustrating the height adjustment system 200 in disengaged position (unlocked position), according to one of the embodiment of present subject matter. To adjust the height of the motor assembly, knob 202 is pressed. The ends of the slider 203 which are engaged with the slope profiled part 303 of the pair of bars 204 start pushing the pair of bars 204 towards the bar motion restricting portion 302. The ends of the slider 203 moves simultaneously over the slope profiled part 303, such that, the movement of pair of bars 204 towards the bar motion restricting portion 302 start synchronously with each other. This movement results in disengagement of pair of bars 204 from the plurality of slots 501 provided on the dual poles 209. The pair of springs 205 provided on the inner end of the pair of bars 204 gets compressed. This facilitates sliding movement of height adjustment system 200 over the dual poles 209. When the knob 202 is pressed to its full limit, the inner end of the pair of bars 204 gets inside the holes provided on the bar motion restricting portion 302.
[0049] Referring to Figure 7 illustrating the height adjustment system 200 in engaged position (locked position), according to one of the embodiment of present subject matter. After the height adjustment system 200 is disengaged from the dual poles 209, the height of the motor assembly is adjusted according to the need. The knob 202 is kept pressed till the position of the motor assembly is maintained, as desired. After the desired position is achieved, the knob 202 is released from its pressed state. The pair of springs 205 which are in compressed state gets decompressed and pushes the pair of bars 204 towards the dual poles 209. The slope profiled part 303 of the pair of bars 204 pushes the slider 203 of the knob 202 backwards and knob 202 attains its initial position. The inner end of the pair of bars 204 comes out of the holes provided on the bar motion restricting portion 302. The pair of bars 204 gets engaged with the plurality of slots 501 provided on the dual poles 209. The height of the motor assembly is locked at desired position.
[0050] The height adjustment system 200 is directly provided in connection with the motor assembly, so that, user does not have to bend down to adjust the height of the fan. The height adjustment operation is done just by pressing the knob with one hand. As the pedestal fan has dual pole assembly, it is more stable than single pole assembly. The present invention has several other advantages such as:
a. force required is less than the existing operation of twisting.
b. Existing twisting operation needs to rotate the knob twice or thrice to operate but invented case just needs a single push to operate.
[0051] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0052] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.

WE CLAIM:

1.A height adjustment system (200) for dual pole pedestal fan, the system comprising:
a casing assembly (201) with a casing top (206) and a casing bottom (207), wherein the casing top (206) is configured to receive a motor assembly;
a pair of pole inserts (208) at either ends of the casing top (206) for receiving a pair of poles (209) of the dual pole pedestal fan;
a knob (202) movably attached to the casing bottom (207);
a slider (203), being attached to the knob (202), with the ends of the slider (203) making a surface contact with a pair of bars (204) at a sloped profiled part (303) of the bars (204); and
a pair of springs (205), to accommodate an inner end of the bars (204), being placed outside a bar motion restricting portion (302) in the casing bottom (207), wherein a plurality of slots (501) are provided on the pair of poles (209) for accommodating an outer end of the bars (204).
2. The system (200) as claimed in claim 1, wherein the slider (203) and the pair of bars (204) are made up of metal., plastics or a combination of metal and plastic.

3. The system (200) as claimed in claim 1, wherein the casing bottom (207) comprises of a knob shaped depression (210) for accommodating the knob (202);

4. The system (200) as claimed in claim 1, wherein the knob (202) and the slider (203) as attached to each other using a screw connection or a nut bolt connection or a snap fit connection or by glue.

5. The system (200) as claimed in claim 1, wherein the casing bottom (207) has an inclined passage (301) for accommodating the pair of bars (204).

6. The system (200) as claimed in claim 5, wherein the inclined passage (301) makes an angle in the range of 0o to 45o with the horizontal.

7. The system (200) as claimed in claim 1, wherein the bar motion restricting portion (302) is provided in middle of the inclined passage (301).

8. The system (200) as claimed in claim 1, wherein the bar motion restricting portion (302) has plurality of holes for accommodating the inner end of the bars (204).

9. The system (200) as claimed in claim 1, wherein when the knob (202) is pressed the slider (203) slides on the sloped profiled part (303) of the bars (204) resulting in simultaneous traverse movement of the bars (204) towards each other.

10. The system (200) as claimed in claim 1, wherein during a locked position, the outer end of the bars (204) are inside the slots (501) provided on the pair of poles (209) and the spring (205) is in a decompressed state.

11. The system (200) as claimed in claim 1, wherein during an unlocked position, the outer end of the bars (204) as outside the slots (501) provided on the pair of poles (209), the spring (205) is in a compressed state and the inner end of the bars (204) is inside the bar motion restricting portion (302).

12. The system (200) as claimed in claim 1, wherein the casing bottom (207) is provided with a plurality of pins (211) and the knob (202) is provided with a plurality of channels (212) to accommodate the pins (211) and to restrict the movement of the knob (202).

13. The system (200) as claimed in claim 1, wherein the casing bottom (207) and casing upper (206) are connected to each other using a screw connection, or a nut bolt connection or a snap fir connection or a glue.