FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]
CONTROL DEVICE FOR RAILWAY VEHICLE
MITSUBISHI ELECTRIC CORPORATION, A CORPORATION ORGANISED AND
EXISTING UNDER THE LAWS OF JAPAN, WHOSE ADDRESS IS 7-3,
MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8310, JAPAN
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE
INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.
2
DESCRIPTION
5 Technical Field
[0001] The present disclosure relates to a control device for a railway vehicle.
Background Art
[0002] Control devices for railway vehicles include housings having
waterproofness and dust resistance. Each of the housings accommodates a control unit
10 for controlling a railway vehicle. The control unit includes a power converter, a circuit
breaker, a transformer, a reactor, and other components. The housing is provided with
an opening that allows for inspection and maintenance of the control unit inside the
housing. The housing is also provided with a cover that covers the opening. An
example of such a housing is the case with a cover disclosed in Patent Literature 1. The
15 case with a cover disclosed in Patent Literature 1 includes a case body and the cover.
The cover includes arms having tips bent toward the center of the cover on the rear
surface of the cover. The arms each have a notch extending in the vertical direction.
The case body includes engaging portions that are opposed to the respective arms and
have insertion holes in which the respective arms are insertable. The notches formed on
20 the arms of the cover engage with the respective engaging portions of the case body, so as
to install the cover to the case body. The rotational axis for opening and closing the
cover extends in the vertical direction.
Citation List
Patent Literature
25 [0003] Patent Literature 1: Unexamined Japanese Patent Application Publication
No. H10-266677
Summary of Invention
3
Technical Problem
[0004] In the case with a cover disclosed in Patent Literature 1, the installation of
the cover to the case body is achieved by first sliding the cover in the direction of
extension of the notches, and then sliding the cover in the opposite direction to engage the
notches with the engaging portions. Since both the notches and the rotational 5 axis for
opening and closing the cover extend in the vertical direction, as described above, the
cover may be unintentionally detached from the case body in response to application of a
force in a direction parallel to the rotational axis during opening or closing of the cover.
If the case includes hinges having a shape for preventing detachment of the cover from
10 the case body, the structure of the device would be complicated.
[0005] An objective of the present disclosure, which has been accomplished in
view of the above situations, is to simplify the structure of a control device for a railway
vehicle while preventing detachment of a cover.
Solution to Problem
15 [0006] In order to achieve the above objective, a control device for a railway
vehicle according to an aspect of the present disclosure includes a housing, a cover, a pair
of first members, and a second member. The housing is provided with an opening.
The cover covers the opening. The pair of first members is attached to the housing.
The second member having a plate shape is detachably attached to the pair of first
20 members. Each of the pair of first members has a notch portion. The second member
has a hole portion including a through hole penetrating both of main surfaces of the
second member or including a pair of notches extending from respective side surfaces of
the second member in mutually approaching directions. The contact of an edge of the
hole portion with the vertically lower bottoms of the notch portions causes the second
25 member to be supported by the pair of first members so as to be rotatable about a
rotational axis. The contact of edges of the hole portion with the pair of first members
restricts displacement of the second member. The second member is attached to the
4
cover and rotates integrally with the cover, thereby opening or closing the opening.
Advantageous Effects of Invention
[0007] According to the present disclosure, the second member is supported by the
pair of first members attached to the housing so as to be rotatable about the rotational axis,
and the pair of first members are in contact with the second member. This 5 configuration
can simplify the structure of a control device for a railway vehicle while preventing
detachment of a cover.
Brief Description of Drawings
[0008] FIG. 1 is a perspective view of a control device for a railway vehicle
10 according to Embodiment 1 of the present disclosure;
FIG. 2 is a perspective view of a housing according to Embodiment 1;
FIG. 3 is a perspective view of a pair of first members according to Embodiment 1;
FIG. 4 is a perspective view of a second member according to Embodiment 1;
FIG. 5 is a perspective view of the first and second members according to
15 Embodiment 1;
FIG. 6 is a side view of the first and second members according to Embodiment 1;
FIG. 7 is a perspective view of the first and second members according to
Embodiment 1;
FIG. 8 is a side view of the first and second members according to Embodiment 1;
20 FIG. 9 is a perspective view of the first and second members according to
Embodiment 1;
FIG. 10 is a side view of the first and second members according to Embodiment
1;
FIG. 11 is a front view of the first and second members according to Embodiment
25 1;
FIG. 12 is a perspective view of a control device for a railway vehicle according to
Embodiment 2 of the present disclosure;
5
FIG. 13 is a perspective view of a second member according to Embodiment 2;
FIG. 14 is a perspective view of a first member according to Embodiment 3 of the
present disclosure;
FIG. 15 is a front view of the first member according to Embodiment 3;
FIG. 16 is a front view of the first and second members according 5 to Embodiment
3;
FIG. 17 is a perspective view of a first member according to Embodiment 4 of the
present disclosure;
FIG. 18 is a front view of the first member according to Embodiment 4;
10 FIG. 19 is a front view of the first and second members according to Embodiment
4;
FIG. 20 is a perspective view of a first member according to Embodiment 5 of the
present disclosure;
FIG. 21 is a perspective view of a control device for a railway vehicle according to
15 Embodiment 6 of the present disclosure;
FIG. 22 is a perspective view of a cover according to Embodiment 6;
FIG. 23 is a perspective view of a control device for a railway vehicle according to
Embodiment 7 of the present disclosure; and
FIG. 24 is a perspective view of a cover according to Embodiment 7.
20 Description of Embodiments
[0009] Control devices for a railway vehicle according to embodiments of the
present disclosure are described below in detail with reference to the drawings.
Components that are the same or equivalent are assigned the same reference signs
throughout the drawings.
25 [0010] Embodiment 1
With reference to FIG. 1, a control device 1 for a railway vehicle (hereinafter
referred to as “control device”) includes a housing 11 and a cover 12. With reference to
6
FIG. 2, the housing 11 is provided with an opening 13. In FIGS. 1 and 2, the Z axis
indicates the vertical direction, the Y axis indicates the direction in which the opening 13
penetrates the housing 11, and the X axis indicates the direction orthogonal to the Y and
Z axes. The control device 1 is installed underneath the floor of a railway vehicle. The
control device 1 further includes a control unit 2 as a device for controlling 5 the railway
vehicle. The control unit 2 is accommodated in the housing 11 of the control device 1.
The control unit 2 includes a power converter, a circuit breaker, a transformer, a reactor,
and other components.
[0011] As illustrated in FIG. 1, the cover 12 is suspended at both ends by two
10 suspension fittings 20 disposed apart from each other in the horizontal direction. The
two suspension fittings 20 are located at the same height on the Z axis. The two
suspension fittings 20 are spaced from each other in the X-axis direction. The cover 12
covers the opening 13. The cover 12 suspended by the two suspension fittings 20 is
rotated about a rotational axis AX represented by the dashed-dotted line in FIG. 1, and
15 thereby opens or closes the opening 13. The rotational axis AX extends through notch
portions, which is described later, provided to a pair of first members 21 of each of the
two suspension fittings 20, that is, the notch portions of the four first members 21. The
rotational axis AX is parallel to the X axis. Since the two suspension fittings 20 have
the identical structure, the following description is directed to only one of the suspension
20 fittings 20 in order to facilitate an understanding. Here, the two suspension fittings 20
simultaneously operate in the same manner. The suspension fitting 20 has a pair of first
members 21 and a second member 22 having a plate shape. The pair of first members
21 is attached to the housing 11. Specifically, the pair of first members 21 is attached to
the housing with the pair of first members 21 facing each other in the X-axis direction
25 and suspends the second member 22. The second member 22 having a plate shape is
attached to the cover 12 with rivets 23. The second member 22 engages with the pair of
first members 21 and is suspended by the pair of first members 21. The second member
7
22 has main surfaces 22a one of which is in contact with a main surface 12a of the cover
12.
[0012] The components of the control device 1 are described below in detail. As
illustrated in FIG. 2, the pair of first members 21 includes a first metal plate 31 having
bent end portions. The first metal plate 31 has a central portion 32 disposed 5 between the
end portions. The central portion 32 is attached to the housing 11 so as to attach the pair
of first members 21 to the housing 11. In the example illustrated in FIGS. 1 and 2, the
central portion 32 is fixed with rivets 24 to a surface of the housing 11 provided with the
opening 13. The central portion 32 has a main surface 32a orthogonal to the horizontal
10 direction. Main surfaces of the end portions of the first metal plate 31, that is, main
surfaces 21a of the pair of first members 21 face each other in the horizontal direction.
With reference to FIG. 3, each of the pair of first members 21 has a notch portion 33.
The notch portion 33 extends from the vertically upper surface to the vertically lower
surface. The central portion 32 has rivet holes 34 through which the respective rivets 24
15 are inserted. Each of the pair of first members 21 also has a protrusion 35, as illustrated
in FIG. 3. The protrusion 35 is disposed apart from the lower bottom of the edge of the
notch portion 33 in the positive Z-axis direction.
[0013] With reference to FIG. 4, the second member 22 has a hole portion 41
including a through hole penetrating both of the main surfaces 22a. The second
20 member 22 also has rivet holes 42 through which the respective rivets 23 are inserted.
The second member 22 is detachably attached to the first members 21. Specifically, an
edge 41a of the hole portion 41 comes into contact with the lower bottoms of the edges of
the notch portions 33. The contact of the edge 41a of the hole portion 41 with the lower
bottoms of the edges of the notch portions 33 causes the second member 22 to be
25 supported by the pair of first members 21. Furthermore, the second member 22 is
supported by the pair of first members 21 at the edge 41a of the hole portion 41. The
contact of edges 41b of the hole portion 41 with the pair of first members 21 restricts
8
displacement of the second member 22. Specifically, the edges 41b are in contact with
the pair of first members 21 in the horizontal direction, which results in restricting
horizontal displacement of the second member 22. The above-described structure
allows the second member 22 to rotate about the rotational axis AX illustrated in FIG. 1.
The second member 22 is attached to the cover 12 and rotates about the 5 rotational axis
AX integrally with the cover 12, and can thereby open or close the opening 13.
[0014] A procedure of attaching the second member 22 to the first members 21 is
explained below with reference to FIGS. 5 to 10. FIGS. 5 to 10 do not illustrate the
housing 11 provided with the first members 21 or the cover 12 provided with the second
10 member 22. FIGS. 5, 7, and 9 are each a perspective view of the first members 21 and
the second member 22. FIGS. 6, 8, and 10 are each a side view of the first members 21
and the second member 22 in each of respective FIGS. 5, 7, and 9, as viewed from the
positive X-axis direction. The pair of first members 21 is first inserted in the hole
portion 41, as illustrated in FIGS. 5 and 6. The second member 22 is inserted in the
15 notch portions 33, as illustrated in FIGS. 7 and 8, so as to bring the edge 41a of the hole
portion 41 into contact with the lower bottoms of the notch portions 33. The second
member 22 is supported by the first members 21 so as to be rotatable about the rotational
axis AX represented by the dashed-dotted line in FIG. 7. The second member 22 rotates
about the rotational axis AX from the position illustrated in FIGS. 7 and 8 to the position
20 illustrated in FIGS. 9 and 10. In FIG. 10, the lower bottoms of the notch portions 33 are
located at the position in which one of the main surfaces 22a of the second member 22 is
regarded to be matched with the main surface 12a of the cover 12. Each of the
protrusions 35 extends above the lower bottom of the notch portion 33, which is located
at the above-described position, on the side of the positive Z-axis direction. The width
25 of a gap between the notch portion 33 and the central portion 32 in the Y-axis direction is
regarded to be equal to the thickness of the cover 12 in the Y-axis direction. The
above-explained processes are performed in a reversed order in detachment of the second
9
member 22 from the first members 21.
[0015] As described above, the second member 22 is rotatable about the rotational
axis AX but is restricted to be displaced in the horizontal direction. With reference to
FIG. 11, the width of a gap between the pair of first members 21 in the horizontal
direction is defined as W1, and the width of the hole portion 41 in the horizontal 5 direction
is defined as W2. Here, W1, which is a width of the gap between the pair of first
members 21 in the horizontal direction, indicates the distance between the outer main
surfaces of the pair of first members 21. By making the width W2 slightly larger than
the width W1, the edges 41b of the hole portion 41 are in contact with the pair of first
10 members 21 in the horizontal direction. This configuration restricts horizontal
displacement of the second member 22. The configuration can thus prevent the cover
12 from being detached by horizontal displacement of the second member 22. The
second member 22 is also restricted to be displaced in the vertical direction, while the
opening 13 is closed by the cover 12, that is, while in a state as illustrated in FIG. 10.
15 The protrusions 35 are disposed apart from the second member 22 in the positive Z-axis
direction, as illustrated in FIG. 10, and thus, when the second member 22 is displaced in
the positive Z-axis direction, the second member 22 comes into contact with the
protrusions 35. This configuration restricts vertical displacement of the second member
22 while the opening 13 is closed by the cover 12. The above-described restriction of
20 horizontal and vertical displacement of the second member 22 can prevent detachment of
the cover 12.
[0016] As described above, in the control device 1 according to Embodiment 1, the
second member 22 is supported by the pair of first members 21 so as to be rotatable about
the rotational axis AX while being in contact with the lower bottoms of the notch portions
25 33, and the second member 22 is in contact with the pair of first members 21 in the
horizontal direction and can thereby prevent detachment of the cover 12. Furthermore,
the structure of the control device 1 can be simplified since the first members 21 is
10
fabricable by bending the first metal plate 31 and the second member 22 is fabricable by
providing a metal plate with a through hole.
[0017] Embodiment 2
Although the pairs of first members 21 are attached to the surface of the housing
11 provided with the opening 13 according to the above-described 5 embodiment, these
attachment positions are each a mere example. In the control device 1 according to
Embodiment 2, each pair of first members 25 are attached to a vertically upper surface of
the housing 11, as illustrated in FIG. 12. The second members 22 have the shape
identical to that in Embodiment 1.
10 [0018] The pair of first members 25 includes a first metal plate 36 having bent end
portions. The first metal plate 36 has a central portion 37 disposed between the end
portions. The central portion 37 is attached to the vertically upper surface of the
housing 11 so as to attach the pair of first members 25 to the housing 11. The central
portion 37 is fixed with non-illustrated rivets to the vertically upper surface of the housing
15 11. The central portion 37 has a main surface orthogonal to the vertical direction.
Main surfaces of the end portions of the first metal plate 36, that is, the main surfaces of
the pair of first members 25 face each other in the horizontal direction.
[0019] With reference to FIG. 13, each of the pair of first members 25 has a notch
portion 38. The notch portion 38 extends from the vertically upper surface to the
20 vertically lower surface. The central portion 37 has rivet holes 39 through which the
respective non-illustrated rivets are inserted. Each of the pair of first members 25 also
has a protrusion 40, as illustrated in FIG. 13. The protrusion 40 is disposed apart from
the lower bottom of the edge of the notch portion 38 in the positive Z-axis direction.
[0020] The edge 41a of the hole portion 41 is in contact with the lower bottoms of
25 the notch portions 38 of the pair of first members 25. The contact of the edge 41a of the
hole portion 41 with the lower bottoms of the notch portions 38 causes the second
member 22 to be supported by the pair of first members 25 so as to be rotatable about the
11
rotational axis. Furthermore, the contact of the edges 41b of the hole portion 41 with the
pair of first members 25 in the horizontal direction restricts horizontal displacement of the
second member 22. The configuration can thus prevent the cover 12 from being
detached by horizontal displacement of the second member 22. The second member 22
is also restricted to be displaced in the vertical direction, while the opening 5 13 is closed
by the cover 12, that is, while in a state as illustrated in FIG. 12. Specifically, the
protrusions 40 are disposed apart from the second member 22 in the positive Z-axis
direction, and thus, when the second member 22 is displaced in the positive Z-axis
direction, the second member 22 comes into contact with the protrusions 40. This
10 configuration restricts vertical displacement of the second member 22 while the opening
13 is closed by the cover 12. The above-described restriction of horizontal and vertical
displacement of the second member 22 can prevent detachment of the cover 12.
[0021] As described above, in the control device 1 according to Embodiment 2, the
second member 22 is supported by the pair of first members 25 so as to be rotatable about
15 the rotational axis AX while being in contact with the lower bottoms of the notch portions
38, and the second member 22 is in contact with the pair of first members 25 in the
horizontal direction and can thereby prevent detachment of the cover 12. Furthermore,
the structure of the control device 1 can be simplified since the first members 25 is
fabricable by bending the first metal plate 36 and the second member 22 is fabricable by
20 providing a metal plate with a through hole.
[0022] Embodiment 3
The second members 22 may each have a shape other than the above-described
shape. The control device 1 according to Embodiment 3 has the configuration identical
to that of the control device 1 according to Embodiment 1, except for the shape of the
25 second members 22. In Embodiment 1, the hole portion 41 of the second member 22
has a constant width in the direction of alignment of the pair of first members 21, that is,
in the X-axis direction. In contrast, in Embodiment 3, second members 26 each have a
12
hole portion 43 of which a width in the X-axis direction is not constant. As illustrated in
FIGS. 14 and 15, the hole portion 43 includes a first hole segment 44 penetrating both of
the main surfaces 22a and a second hole segment 45 penetrating both of the main
surfaces 22a. The second hole segment 45 communicates with the first hole segment 44
and has a larger width in the X-axis direction than the first hole segment 5 44. An edge
44a of the first hole segment 44 is in contact with the lower bottoms of the notch portions
33 of the pair of first members 21. The contact of the edge 44a of the first hole segment
44 with the lower bottoms of the notch portions 33 causes the second member 26 to be
supported by the pair of first members 21 so as to be rotatable about the rotational axis
10 AX.
[0023] With reference to FIG. 16, the width of the gap between the pair of first
members 21 in the horizontal direction is defined as W1, the width of the first hole
segment 44 in the horizontal direction is defined as W2, and the width of the second hole
segment 45 in the horizontal direction is defined as W3. By making the width W2
15 slightly larger than the width W1, edges 44b of the first hole segment 44 are in contact
with the pair of first members 21 in the horizontal direction. This configuration restricts
horizontal displacement of the second member 26. By making the width W3
sufficiently larger than the width W2, the second member 26 can be readily attached to
the first members 21.
20 [0024] As described above, in the control device 1 according to Embodiment 3,
each of the second members 26 has the hole portion 43 including the first hole segment
44 and the second hole segment 45. This configuration facilitates attachment of the
second member 26 to the first members 21.
[0025] Embodiment 4
25 The second members 22 may have a shape other than the above-described shapes.
In Embodiment 4, second members 27 each have hole portions 46 including a pair of
notches, which extend from the respective side surfaces 27a in the mutually approaching
13
directions, as illustrated in FIGS. 17 and 18. In the example illustrated in FIGS. 17 and
18, the pair of notches extends in the horizontal direction. Edges 46a of the hole
portions 46 are in contact with the lower bottoms of the notch portions 33 of the pair of
first members 21. The contact of the edges 46a of the hole portions 46 with the lower
bottoms of the notch portions 33 causes the second member 27 to be 5 supported by the
pair of first members 21 so as to be rotatable about the rotational axis AX. Furthermore,
the contact of edges 46b of the hole portions 46 with the pair of first members 21 in the
horizontal direction restricts horizontal displacement of the second member 27.
[0026] With reference to FIG. 19, the width of the gap between the pair of first
10 members 21 in the horizontal direction is defined as W1, the thickness of each first
member 21 in the horizontal direction is defined as W4, and the width of the gap between
the pair of notches of the hole portions 46 in the horizontal direction is defined as W5.
By making the length (W1-2W4) slightly larger than the width W5, the edges 46a of the
hole portions 46 are in contact with the pair of first members 21 in the horizontal
15 direction. This configuration restricts horizontal displacement of the second member
27.
[0027] As described above, in the control device 1 according to Embodiment 4, the
second member 27 is supported by the pair of first members 21 so as to be rotatable about
the rotational axis AX while being in contact with the lower bottoms of the notch portions
20 33, and the second member 27 is in contact with the pair of first members 21 in the
horizontal direction and can thereby prevent detachment of the cover 12. Furthermore,
the structure of the control device 1 can be simplified since the first members 21 is
fabricable by bending the first metal plate 31 and the second member 27 is fabricable by
providing a metal plate with a pair of notches.
25 [0028] Embodiment 5
The second members may have a shape other than the above-described shapes.
According to Embodiment 5, second members 28 each include a second metal plate 51
14
having bent end portions 52, as illustrated in FIG. 20. The second metal plate 51 is bent
such that the end portions 52 face each other in the direction of alignment of the pair of
first members 21, that is, in the X-axis direction. The second metal plate 51 has a
central portion 53 disposed between the end portions 52. The central portion 53 has the
hole portion 41. The second member 28 including the second metal plate 5 51 having the
bent end portions 52 can obtain an increased strength.
[0029] The edge 41a of the hole portion 41 is in contact with the lower bottoms of
the notch portions 33 of the pair of first members 21. The contact of the edge 41a of the
hole portion 41 with the lower bottoms of the notch portions 33 causes the second
10 member 28 to be supported by the pair of first members 21 so as to be rotatable about the
rotational axis AX. Furthermore, the contact of the edges 41b of the hole portion 41
with the pair of first members 21 in the horizontal direction restricts horizontal
displacement of the second member 28.
[0030] As described above, in the control device 1 according to Embodiment 5, the
15 second member 28 including the second metal plate 51 having the bent end portions 52
has an increased strength.
[0031] Embodiment 6
Although the second members 22, 26, and 27 are independent from the cover 12
according to the above-described embodiments, the first members may be integrated with
20 the cover. The control device 1 according to Embodiment 6 differs from the control
device 1 according to Embodiment 1 in including a cover 14, in place of the cover 12 and
the second members 22. The cover 14 serves as the second members in Embodiment 6.
The cover 14 serving as the second members enables the control device 1 to have an
increased strength.
25 [0032] As illustrated in FIGS. 21 and 22, the cover 14 has hole portions 15
including through holes. An edge 15a of each of the hole portions 15 is in contact with
the lower bottoms of the notch portions 33 of the pair of first members 21. The contact
15
of the edge 15a of the hole portion 15 with the lower bottoms of the notch portions 33
causes the cover 14 to be supported by the pair of first members 21 so as to be rotatable
about the rotational axis AX. Furthermore, the contact of edges 15b of the hole portion
15 with the pair of first members 21 in the horizontal direction restricts horizontal
displacement of the cover 14. The configuration can thus prevent 5 the cover 14 from
being detached by horizontal displacement of the cover 14. The cover 14 is also
restricted to be displaced in the vertical direction, while the opening 13 is closed by the
cover 14, that is, while in a state as illustrated in FIG. 21. The protrusions 35 are
disposed apart from the cover 14 in the positive Z-axis direction, and thus, when the
10 cover 14 is displaced in the positive Z-axis direction, the cover 14 comes into contact
with the protrusions 35. This configuration restricts vertical displacement of the cover
14 while the opening 13 is closed by the cover 14. The above-described restriction of
horizontal and vertical displacement of the cover 14 can prevent detachment of the cover
14.
15 [0033] As described above, in the control device 1 according to Embodiment 6, the
cover 14 enables the control device 1 to have an increased strength.
[0034] Embodiment 7
The cover serving as second members may have a shape other than that in
Embodiment 6. With reference to FIG. 23, the control device 1 according to
20 Embodiment 7 includes a cover 16. The control device 1 according to Embodiment 7
differs from the control device 1 according to Embodiment 1 in including the cover 16, in
place of the cover 12 and the second members 22. The cover 16 serves as the second
members in Embodiment 7. The cover 16 serving as the second members enables the
control device 1 to have an increased strength.
25 [0035] As illustrated in FIGS. 23 and 24, the cover 16 has hole portions 17
including through holes. An edge 17a of each of the hole portions 17 is in contact with
the lower bottoms of the notch portions 33 of the pair of first members 21. The contact
16
of the edge 17a of the hole portion 17 with the lower bottoms of the notch portions 33
causes the cover 16 to be supported by the pair of first members 21 so as to be rotatable
about the rotational axis AX. Furthermore, the contact of edges 17b of the hole portion
17 with the pair of first members 21 in the horizontal direction restricts horizontal
displacement of the cover 16. The configuration can thus prevent 5 the cover 16 from
being detached by horizontal displacement of the cover 16. The cover 16 is also
restricted to be displaced in the vertical direction, while the opening 13 is closed by the
cover 16, that is, while in a state as illustrated in FIG. 23. The protrusions 35 are
disposed apart from the cover 16 in the positive Z-axis direction, and thus, when the
10 cover 16 is displaced in the positive Z-axis direction, the cover 16 comes into contact
with the protrusions 35. This configuration restricts vertical displacement of the cover
16 while the opening 13 is closed by the cover 16. The above-described restriction of
horizontal and vertical displacement of the cover 16 can prevent detachment of the cover
16.
15 [0036] As described above, in the control device 1 according to Embodiment 7, the
cover 16 enables the control device 1 to have an increased strength.
[0037] Some of the above-described embodiments may be arbitrarily combined.
For example, the control device 1 may include the pair of first members 25 according to
Embodiment 2 and the second member 22 according to Embodiment 2. Alternatively,
20 the control device 1 may include the pair of first members 25 according to Embodiment 2
and the second member 26 according to Embodiment 3. Alternatively, the control
device 1 may include the pair of first members 25 according to Embodiment 2 and the
second member 27 according to Embodiment 4. Alternatively, the control device 1 may
include the pair of first members 25 according to Embodiment 2 and the second member
25 28 according to Embodiment 5. Alternatively, the control device 1 may include the pair
of first members 25 according to Embodiment 2 and the cover 14 or 16.
[0038] The above-described embodiments should not be construed as limiting the
17
present disclosure. The opening 13 may be provided to a surface of the housing 11
intersecting the horizontal direction, the vertically upper or lower surface of the housing
11, or a surface of the housing 11 intersecting the vertical direction, instead of the surface
of the housing 11 orthogonal to the horizontal direction. The configuration may include
any number of suspension fittings 20. For example, a single suspension 5 fitting 20 may
be provided at the center of the cover 12 in the X-axis direction so as to suspend the cover
12.
[0039] The foregoing describes some example embodiments for explanatory
purposes. Although the foregoing discussion has presented specific embodiments,
10 persons skilled in the art will recognize that changes may be made in form and detail
without departing from the broader spirit and scope of the invention. Accordingly, the
specification and drawings are to be regarded in an illustrative rather than a restrictive
sense. This detailed description, therefore, is not to be taken in a limiting sense, and the
scope of the invention is defined only by the included claims, along with the full range of
15 equivalents to which such claims are entitled.
Reference Signs List
[0040] 1 Control device for a railway vehicle
2 Control unit
11 Housing
20 12, 14, 16 Cover
12a, 21a, 22a, 32a Main surface
13 Opening
15, 17, 41, 43, 46 Hole portion
15a, 15b, 17a, 17b, 41a, 41b, 44a, 44b, 46a, 46b Edge
25 20 Suspension fitting
21, 25 First member
22, 26, 27, 28 Second member
18
23, 24 Rivet
27a Side surface
31, 36 First metal plate
32, 37, 53 Central portion
33, 5 38 Notch portion
34, 39, 42 Rivet hole
35, 40 Protrusion
44 First hole segment
45 Second hole segment
10 51 Second metal plate
52 End portion
AX Rotational axis
19
We Claim :
1. A control device for a railway vehicle, comprising:
a housing provided with an opening;
a cover to cover the opening;
a pair of first members to be attached to 5 the housing; and
a second member having a plate shape, the second member being detachably
attached to the pair of first members, wherein
each of the pair of first members has a notch portion,
the second member has a hole portion including a through hole penetrating both of
10 main surfaces of the second member or including a pair of notches extending from
respective side surfaces of the second member in mutually approaching directions,
contact of an edge of the hole portion with vertically lower bottoms of edges of the
notch portions causes the second member to be supported by the pair of first members so
as to be rotatable about a rotational axis,
15 contact of edges of the hole portion with the pair of first members restricts
displacement of the second member, and
the second member is attached to the cover and rotates integrally with the cover, to
cause opening or closing of the opening.
20 2. The control device according to claim 1, wherein
the pair of first members includes a first metal plate having bent end portions and a
central portion disposed between the end portions, and
the central portion of the first metal plate is attached to the housing so as to attach
the pair of first members to the housing.
25
3. The control device according to claim 2, wherein
the opening is provided to a surface of the housing orthogonal to a horizontal
20
direction,
the central portion of the first metal plate has a main surface orthogonal to the
horizontal direction,
the central portion of the first metal plate is attached to a surface of the housing
provided with 5 the opening, and
the end portions of the first metal plate have main surfaces facing each other in the
horizontal direction.
4. The control device according to claim 2, wherein
10 the opening is provided to a surface of the housing orthogonal to a horizontal
direction,
the central portion of the first metal plate has a main surface orthogonal to a
vertical direction,
the central portion of the first metal plate is attached to a vertically upper surface of
15 the housing, and
the end portions of the first metal plate have main surfaces facing each other in the
horizontal direction.
5. The control device according to any one of claims 1 to 4, wherein
20 the hole portion includes a first hole segment and a second hole segment, the first
hole segment penetrating both of the main surfaces of the second member, the second
hole segment penetrating both of the main surfaces of the second member and
communicating with the first hole segment, the second hole segment having a width
larger than a width of the first hole segment in a direction of alignment of the pair of first
25 members, and
contact of an edge of the first hole segment with the lower bottoms of the edges of
the notch portions causes the second member to be supported by the pair of first members
so as to be rotatable about the rotational axis.
6. The control device
second member includes
facing each other in a direction of 5 alignment of the
7. The control device
the pair of first members comprises a protrusion, the protr
apart from the second member in a vertical direction
10 cover.
8. The control device
second member is integrated with the cover.
15 9. The control device
a device for controlling the
housing.
Dated this 15th day of September, 2020
20
25
21
according to any one of claims 1 to 5, wherein the
a second metal plate having bent end portions, the end portions
pair of first members.
according to any one of claims 1 to 6, wherein each of
protrusion being disposed above and
while the opening is closed by the
according to any one of claims 1 to 7, wherein
according to any one of claims 1 to 8, further comprising
railway vehicle, the device being accommodated