Control unit for rail vehicle

Abstract

Control unit (1) for a rail vehicle, comprising: a housing (11) which is provided with an opening (13); a cover (12, 14, 16) to cover the opening (13); a pair of first elements (21, 25) to be attached to the housing (11); and a second element (22, 26, 27, 28) having a plate shape, wherein the second element (22, 26, 27, 28) is detachably attached to the pair of first elements (21, 25), wherein each of the first two elements (21, 25) has a notch section (33, 38), the pair of first elements (21, 25) comprises a first metal plate (31, 36) with curved end sections and a central section (32, 37) arranged between the end sections, and the central section (32, 37) of the first metal plate (31, 36) is attached to the housing (11) to attach the pair of first elements (21, 25) to the housing (11), the second element (22, 26, 27, 28) has a hole section (15, 17, 41, 43, 46) that includes a through hole penetrating both main surfaces (22a) of the second element (22, 26, 27, 28), or that includes a pair of notches extending from respective side surfaces (27a) of the second element (22, 26, 27, 28) in directions approaching each other, Contact of an edge (15a, 17a, 41a, 44a, 46a) of the hole section (15, 17, 41, 43, 46) with vertically lower ends of edges of the notch sections (33, 38) causes the second element (22, 26, 27, 28) to be supported by the pair of first elements (21, 25) in such a way that it is rotatable about an axis of rotation (AX), a contact of edges (15a, 17a, 41a, 44a, 46a) of the hole section (15, 17, 41, 43, 46) with the pair of first elements (21, 25) restricts a displacement of the second element (22, 26, 27, 28), and the second element (22, 26, 27, 28) is attached to the cover (12, 14, 16) and rotates integrally with the cover (12, 14, 16) to cause the opening (13) to open or close.

Description

Technical field

[0001] The present disclosure relates to a control unit for a rail vehicle. Technological background

[0002] Control units for railway vehicles comprise housings that are waterproof and dustproof. Each housing contains a control unit for controlling a railway vehicle. The control unit includes a power converter, a circuit breaker, a transformer, an inductor, and other components. The housing is provided with an opening that allows 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 box with a cover disclosed in patent reference 1. The box with a cover disclosed in patent reference 1 comprises a box body and the cover. The cover includes arms with tips on the back of the cover that are curved towards the center of the cover. Each arm has a notch extending in the vertical direction.The box body comprises engagement sections opposite the respective arms and has insertion holes into which the respective arms can be inserted. The notches formed on the arms of the cover engage in the respective engagement sections of the box body such that the cover is attached to the box body. The axis of rotation for opening and closing the cover runs in the vertical direction. Patent reference 2 relates to a hinge arrangement. Patent reference 3 relates to a lid fastening structure. Patent reference 4 relates to a device for connecting components. Patent reference 5 relates to a hinge device for a lid. List of citations, patent literature Patent literature 1: JP H10 - 266 677 A Patent Literature 2: US 3,685,093 A Patent literature 3: JP H06 - 225 432 A Patent Literature 4: JP S55 -36 765 U Patent literature 5: KR 10 2017 0 032 784 A Summary of the invention: Technical problem

[0003] In the case of a cover disclosed in patent literature 1, the cover is attached to the box body by first sliding it in the direction of the notches and then in the opposite direction to engage the notches with the engagement sections. Since both the notches and the axis of rotation for opening and closing the cover, as described above, are vertical, the cover can unintentionally detach from the box body in response to the application of a force in a direction parallel to the axis of rotation during opening or closing. If the box includes hinges shaped to prevent the cover from detaching from the box body, the design of the device would be complicated.

[0004] One objective of the present disclosure, which has been achieved in view of the situations mentioned above, is to simplify the construction of a control unit for a rail vehicle while simultaneously preventing a cover from coming loose. Solution to the problem

[0005] To achieve the aforementioned objective, a control unit for a rail vehicle with the features of claim 1 is proposed. The control unit comprises a housing, a cover, a pair of first elements, and a second element. The housing is provided with an opening. The cover covers the opening. The pair of first elements is attached to the housing. The second element, which is plate-shaped, is detachably attached to the pair of first elements. Each of the two first elements has a notched section. The pair of first elements comprises a first metal plate with curved end sections and a central section arranged between the end sections. The central section of the first metal plate is attached to the housing to secure the pair of first elements to the housing.The second element has a perforated section comprising a through-hole penetrating both main faces of the second element, or comprising a pair of notches extending from the respective side faces of the second element in directions converging towards each other. Contact of an edge of the perforated section with the vertically lower ends of the notched sections causes the second element to be supported by the pair of first elements in such a way that it can rotate about an axis of rotation. The contact of the edges of the perforated section with the pair of first elements restricts displacement of the second element. The second element is attached to the cover and rotates integrally with the cover, thereby opening or closing the opening. Advantageous effects of the invention

[0006] According to the present disclosure, the second element is supported by the pair of first elements attached to the housing in such a way that it is rotatable about the axis of rotation, and the pair of first elements is in contact with the second element. This design can simplify the construction of a control unit for a rail vehicle and at the same time prevent a cover from coming loose. Brief description of the drawings Fig. Figure 1 is a perspective view of a control unit for a rail vehicle according to embodiment 1 of the present disclosure; Fig. Figure 2 is a perspective view of a housing according to embodiment 1; Fig. Figure 3 is a perspective view of a pair of first elements according to embodiment 1; Fig. Figure 4 is a perspective view of a second element according to embodiment 1; Fig. Figure 5 is a perspective view of the first and second elements according to embodiment 1; Fig. 6 is a side view of the first and second elements according to embodiment 1; Fig. Figure 7 is a perspective view of the first and second elements according to embodiment 1; Fig. 8 is a side view of the first and second elements according to embodiment 1; Fig. Figure 9 is a perspective view of the first and second elements according to embodiment 1; Fig. 10 is a side view of the first and second elements according to embodiment 1; Fig. 11 is a front view of the first and second elements according to embodiment 1; Fig. 12 is a perspective view of a control unit for a rail vehicle according to embodiment 2 of the present disclosure; Fig. Figure 13 is a perspective view of a first element according to embodiment 2; Fig. Figure 14 is a perspective view of a second element according to embodiment 3 of the present disclosure; Fig. Figure 15 is a front view of the second element according to embodiment 3; Fig. 16 is a front view of the first and second elements according to embodiment 3; Fig. 17 is a perspective view of a second element according to embodiment 4 of the present disclosure; Fig. 18 is a front view of the second element according to embodiment 4; Fig. 19 is a front view of the first and second elements according to embodiment 4; Fig. 20 is a perspective view of a second element according to embodiment 5 of the present disclosure; Fig. 21 is a perspective view of a control unit for a rail vehicle according to embodiment 6 of the present disclosure; Fig. Figure 22 is a perspective view of a cover according to embodiment 6; Fig. 23 is a perspective view of a control unit for a rail vehicle according to embodiment 7 of the present disclosure; and Fig. Figure 24 is a perspective view of a cover according to embodiment 7. Description of embodiments

[0007] Control units for a rail vehicle according to embodiments of the present disclosure are described in detail below with reference to the drawings. Components that are identical or equivalent are assigned the same reference numerals in all drawings. Design 1

[0008] With reference to Fig. 1 comprises a control unit 1 for a rail vehicle (hereinafter referred to as "control unit"), a housing 11 and a cover 12. With reference to Fig. 2. The housing 11 is provided with an opening 13. In Fig. 1 and Fig. 2 denotes the Z-axis as the vertical direction, the Y-axis as the direction in which the opening 13 penetrates the housing 11, and the X-axis as the direction orthogonal to the Y- and Z-axes. The control unit 1 is installed under the floor of a rail vehicle. The control unit 1 also includes a control module 2 as a device for controlling the rail vehicle. The control module 2 is housed in the housing 11 of the control unit 1. The control module 2 includes a power converter, a circuit breaker, a transformer, an inductor, and other components.

[0009] As in Fig. As shown in Figure 1, the cover 12 is suspended at both ends by two suspension fittings 20, which are spaced apart horizontally. The two suspension fittings 20 are at the same height on the Z-axis. The two suspension fittings 20 are spaced apart along the X-axis. The cover 12 covers the opening 13. The cover 12, suspended by the two suspension fittings 20, is rotated about a pivot axis AX, which is indicated by the dashed line in Figure 1. Fig. As shown in Figure 1, the opening 13 is rotated and opens or closes. As will be described later, the axis of rotation AX extends through notched sections provided on a pair of first elements 21 of each of the two suspension fittings 20, i.e., the notched sections of the four first elements 21. The axis of rotation AX is parallel to the X-axis. Since the two suspension fittings 20 have the same construction, the following description refers to only one of the suspension fittings 20 for clarity. The two suspension fittings 20 operate simultaneously in the same manner. The suspension fitting 20 has a pair of first elements 21 and a second element 22, which is plate-shaped. The pair of first elements 21 is attached to the housing 11.Specifically, the pair of first elements 21 is attached to the housing, with the pair of first elements 21 facing each other in the direction of the X-axis and suspending the second element 22. The second element 22, which has a plate shape, is attached to the cover 12 by rivets 23. The second element 22 engages with the pair of first elements 21 and is suspended by the pair of first elements 21. The second element 22 has main surfaces 22a, one of which is in contact with a main surface 12a of the cover 12.

[0010] The components of control unit 1 are described in detail below. As in Fig. As shown in Figure 2, the pair of first elements 21 comprises a first metal plate 31 with curved end sections. The first metal plate 31 has a central section 32 located between the end sections. The central section 32 is attached to the housing 11 to secure the pair of first elements 21 to the housing 11. In the Fig. 1 and Fig. In the example shown in Figure 2, the central section 32 is attached by rivets 24 to a surface of the housing 11, which is provided with the opening 13. The central section 32 has a principal surface 32a orthogonal to the horizontal direction. The principal surfaces of the end sections of the first metal plate 31, i.e., the principal surfaces 21a of the pair of first elements 21, are opposite each other in the horizontal direction. With reference to Fig. Each of the first two elements 21 has a notched section 33. The notched section 33 extends from the vertically upper surface to the vertically lower surface. The central section 32 has rivet holes 34 through which the respective rivets 24 are inserted. Each of the first two elements 21 also has a projection 35, as shown in Fig. Figure 3 shows that the projection 35 is spaced from the lower underside of the edge of the notch section 33 in the direction of the positive Z-axes.

[0011] With reference to Fig. The second element 22 has a hole section 41 that includes a through-hole penetrating both main surfaces 22a. The second element 22 also has rivet holes 42 through which the corresponding rivets 23 are inserted. The second element 22 is detachably attached to the first elements 21. Specifically, an edge 41a of the hole section 41 comes into contact with the lower ends of the edges of the notched sections 33. This contact of the edge 41a of the hole section 41 with the lower ends of the edges of the notched sections 33 causes the second element 22 to be supported by the pair of first elements 21. Furthermore, the second element 22 is supported by the pair of first elements 21 at the edge 41a of the hole section 41. The contact of the edges 41b of the hole section 41 with the pair of first elements 21 restricts a displacement of the second element 22.Specifically, edges 41b are in horizontal contact with the pair of first elements 21, which restricts the horizontal displacement of the second element 22. The setup described above allows the second element 22 to move around the area shown in . Fig. The second element 22 is attached to the cover 12 and rotates integrally with the cover 12 around the axis of rotation AX, and can thereby open or close the opening 13.

[0012] A method for attaching the second element 22 to the first elements 21 is described below with reference to the Fig. Explained in sections 5 to 10. Fig. Figures 5 to 10 do not show the housing 11, which is fitted with the first elements 21, or the cover 12, which is fitted with the second element 22. Fig. 5, Fig. 7 and Fig. Figure 9 each shows a perspective view of the first element 21 and the second element 22. Fig. 6, Fig. 8 and Fig. Figure 10 each shows a side view of the first element 21 and the second element 22 in their respective positions. Fig. 5, Fig. 7 and Fig. 9, viewed from the direction of the positive x-axis. As in Fig. 5 and Fig. As shown in Figure 6, the pair of first elements 21 is initially inserted into the hole section 41. The second element 22 is then inserted as shown in Figure 6. Fig. 7 and Fig. 8 shown, inserted into the notched sections 33 to bring the edge 41a of the hole section 41 into contact with the lower ends of the notched sections 33. The second element 22 is supported by the first elements 21 in such a way that it is rotatable about the axis of rotation AX, which is indicated by the dashed-dotted line in Fig. 7 is shown. The second element 22 rotates around the axis of rotation AX from the one in Fig. 7 and Fig. 8 shown position in the in Fig. 9 and Fig. Position 10 shown. In Fig. In section 10, the lower ends of the notched sections 33 are located at the position where one of the main surfaces 22a of the second element 22 is considered to coincide with the main surface 12a of the cover 12. Each of the projections 35 extends over the lower end of the notched section 33, located at the position described above, laterally in the direction of the positive Z-axes. The width of a gap between the notched section 33 and the central section 32 in the direction of the Y-axis is considered to be equal to the thickness of the cover 12 in the direction of the Y-axis. The operations described above are performed in reverse order when separating the second element 22 from the first elements 21.

[0013] As described above, the second element 22 is rotatable about the axis of rotation AX, but its horizontal displacement is limited. With reference to Fig. In 11, the width of a gap between the pair of first elements 21 in the horizontal direction is defined as W1, and the width of the hole section 41 in the horizontal direction is defined as W2. Here, W1, which is the width of the gap between the pair of first elements 21 in the horizontal direction, specifies the distance between the outer principal surfaces of the pair of first elements 21. By making the width W2 slightly larger than the width W1, the edges 41b of the hole section 41 are in contact with the pair of first elements 21 in the horizontal direction. This configuration restricts the horizontal displacement of the second element 22. The configuration thus prevents the cover 12 from coming loose due to horizontal displacement of the second element 22. The second element 22 is also restricted in its vertical displacement while the opening 13 is closed by the cover 12, i.e., in a state as described in Fig. 10 is shown. The protrusions 35 are, as in Fig. As shown in Figure 10, the second element 22 is spaced apart from the second element 22 in the direction of the positive Z-axis. Consequently, when the second element 22 is displaced in the direction of the positive Z-axis, it comes into contact with the projections 35. This configuration restricts vertical displacement of the second element 22, while the opening 13 is closed by the cover 12. The restriction of horizontal and vertical displacement of the second element 22 described above prevents the cover 12 from coming loose.

[0014] As described above, in the control unit 1 according to embodiment 1, the second element 22 is supported by the pair of first elements 21 such that it is rotatable about the axis of rotation AX while in contact with the lower ends of the notched sections 33, and the second element 22 is in horizontal contact with the pair of first elements 21, thereby preventing the cover 12 from coming loose. Furthermore, the construction of the control unit 1 can be simplified because the first elements 21 can be manufactured by bending the first metal plate 31, and the second element 22 can be manufactured by providing a metal plate with a through-hole. Design 2

[0015] Although the pairs of first elements 21 are attached to the surface of the housing 11, which is provided with the opening 13, according to the embodiment described above, these attachment positions are only examples. In the control unit 1 according to embodiment 2, each pair of first elements 25 is, as in Fig. 12 is shown, attached to a vertical upper surface of the housing 11. The second elements 22 have the same shape as in embodiment 1.

[0016] The pair of first elements 25 comprises a first metal plate 36 with curved end sections. The first metal plate 36 has a central section 37 located between the end sections. The central section 37 is attached to the vertically upper surface of the housing 11 to fasten the pair of first elements 25 to the housing 11. The central section 37 is fastened to the vertically upper surface of the housing 11 by rivets (not shown). The central section 37 has a principal surface that is orthogonal to the vertical direction. The principal surfaces of the end sections of the first metal plate 36, i.e., the principal surfaces of the pair of first elements 25, are opposite each other in the horizontal direction.

[0017] With reference to Fig. 13 Each of the first two elements 25 has a notched section 38. The notched section 38 extends from the vertically upper surface to the vertically lower surface. The central section 37 has rivet holes 39 through which the respective rivets (not shown) are inserted. Each of the first two elements 25 has, as in Fig. Figure 13 also shows a projection 40. The projection 40 is spaced from the lower end of the edge of the notch section 38 in the direction of the positive Z-axis.

[0018] The edge 41a of the hole section 41 is in contact with the lower ends of the notch sections 38 of the pair of first elements 25. The contact of the edge 41a of the hole section 41 with the lower ends of the notch sections 38 causes the second element 22 to be supported by the pair of first elements 25 in such a way that it is rotatable about the axis of rotation. Furthermore, the contact of the edges 41b of the hole section 41 with the pair of first elements 25 restricts the horizontal displacement of the second element 22. This design thus prevents the cover 12 from coming loose due to horizontal displacement of the second element 22. The second element 22 is also restricted in its vertical displacement while the opening 13 is closed by the cover 12, i.e., in a state as described in Fig. Figure 12 shows this. Specifically, the projections 40 are spaced apart from the second element 22 in the direction of the positive Z-axis, and consequently, when the second element 22 is displaced in the direction of the positive Z-axis, it comes into contact with the projections 40. This design restricts vertical displacement of the second element 22, while the opening 13 is closed by the cover 12. The restriction of horizontal and vertical displacement of the second element 22 described above prevents the cover 12 from coming loose.As described above, in the control unit 1 according to embodiment 2, the second element 22 is supported by the pair of first elements 25 such that it is rotatable about the axis of rotation AX while in contact with the lower ends of the notched sections 38, and the second element 22 is in contact with the pair of first elements 25 in the horizontal direction, thereby preventing the cover 12 from coming loose. Furthermore, the construction of the control unit 1 can be simplified because the first elements 25 can be manufactured by bending the first metal plate 36, and the second element 22 can be manufactured by providing a metal plate with a through-hole. embodiment 3

[0019] The second elements 22 can each have a shape different from that described above. The control unit 1 according to embodiment 3 has the same configuration as the control unit 1 according to embodiment 1, except for the shape of the second elements 22. In embodiment 1, the hole section 41 of the second element 22 has a constant width in the orientation direction of the pair of first elements 21, i.e., in the direction of the X-axis. In contrast, in embodiment 3, the second elements 26 each have a hole section 43 whose width is not constant in the direction of the X-axis. As in Fig. 14 and Fig. As shown in Figure 15, the hole section 43 comprises a first hole segment 44 that penetrates the two main surfaces 22a, and a second hole segment 45 that also penetrates the two main surfaces 22a. The second hole segment 45 is connected to the first hole segment 44 and has a greater width in the direction of the X-axis than the first hole segment 44. An edge 44a of the first hole segment 44 is in contact with the lower ends of the notch sections 33 of the pair of first elements 21. The contact of the edge 44a of the first hole segment 44 with the lower ends of the notch sections 33 causes the second element 26 to be supported by the pair of first elements 21 in such a way that it is rotatable about the axis of rotation AX.

[0020] With reference to Fig. In section 16, the width of the gap between the pair of first elements 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 slightly larger than the width W1, edges 44b of the first hole segment 44 in the horizontal direction are in contact with the pair of first elements 21. This configuration restricts the horizontal displacement of the second element 26. If the width W3 is made sufficiently larger than the width W2, the second element 26 can be easily attached to the first elements 21.

[0021] As described above, in the control unit 1 according to embodiment 3, each of the second elements 26 has the hole section 43, which comprises the first hole segment 44 and the second hole segment 45. This design facilitates the attachment of the second element 26 to the first elements 21. Design 4

[0022] The second elements 22 can have a different shape than those described above. In embodiment 4, the second elements 27 each have hole sections 46 that comprise a pair of notches, as shown in Fig. 17 and Fig. As shown in Figure 18, they extend from the respective side faces 27a in the directions approaching each other. In the Fig. 17 and Fig. In the example shown in Figure 18, the pair of notches extends in the horizontal direction. Edges 46a of the hole sections 46 are in contact with the lower ends of the notch sections 33 of the pair of first elements 21. The contact of the edges 46a of the hole sections 46 with the lower ends of the notch sections 33 causes the second element 27 to be supported by the pair of first elements 21 in such a way that it can rotate about the axis of rotation AX. Furthermore, the contact of the edges 46b of the hole sections 46 with the pair of first elements 21 in the horizontal direction restricts the horizontal displacement of the second element 27.

[0023] With reference to Fig. In Equation 19, the width of the gap between the pair of first elements 21 in the horizontal direction is defined as W1, the thickness of each first element 21 in the horizontal direction is defined as W4, and the width of the gap between the pair of notches of the hole sections 46 in the horizontal direction is defined as W5. By making the length (W1-2W4) slightly larger than the width W5, the edges 46b of the hole sections 46 in the horizontal direction are in contact with the pair of first elements 21. This configuration restricts the horizontal displacement of the second element 27.

[0024] As described above, in the control unit 1 according to embodiment 4, the second element 27 is supported by the pair of first elements 21 such that it is rotatable about the axis of rotation AX while in contact with the lower ends of the notched sections 33, and the second element 27 is in horizontal contact with the pair of first elements 21, thereby preventing the cover 12 from coming loose. Furthermore, the construction of the control unit 1 can be simplified because the first elements 21 can be manufactured by bending the first metal plate 31, and the second element 27 can be manufactured by providing a metal plate with a pair of notches. Design 5

[0025] The second elements can have a different shape than those described above. According to embodiment 5, the second elements comprise 28, as shown in Fig. Figure 20 shows a second metal plate 51 with curved end sections 52. The second metal plate 51 is curved such that the end sections 52 are opposite each other in the orientation direction of the pair of first elements 21, i.e., in the direction of the X-axis. The second metal plate 51 has a central section 53 located between the end sections 52. The central section 53 has the hole section 41. The second element 28, which comprises the second metal plate 51 with the curved end sections 52, may have increased strength.

[0026] The edge 41a of the hole section 41 is in contact with the lower ends of the notch sections 33 of the pair of first elements 21. The contact of the edge 41a of the hole section 41 with the lower ends of the notch sections 33 causes the second element 28 to be supported by the pair of first elements 21 in such a way that it can rotate about the axis of rotation AX. Furthermore, the contact of the edges 41b of the hole section 41 with the pair of first elements 21 in the horizontal direction restricts the horizontal displacement of the second element 28.

[0027] As described above, in the control unit 1 according to embodiment 5, the second element 28, which comprises the second metal plate 51 with the curved end sections 52, has increased strength. Design 6

[0028] Although the second elements 22, 26, and 27 are independent of the cover 12 according to the embodiments described above, the second elements can be integrated into the cover. The control unit 1 according to embodiment 6 differs from the control unit 1 according to embodiment 1 in that it comprises a cover 14 instead of the cover 12 and the second elements 22. In embodiment 6, the cover 14 serves as the second elements. The cover 14, acting as the second elements, enables the control unit 1 to have increased strength.

[0029] As in Fig. 21 and Fig. As shown in Figure 22, the cover 14 has hole sections 15 that encompass the through holes. An edge 15a of each of the hole sections 15 is in contact with the lower ends of the notched sections 33 of the pair of first elements 21. The contact of the edge 15a of the hole section 15 with the lower ends of the notched sections 33 causes the cover 14 to be supported by the pair of first elements 21 such that it is rotatable about the axis of rotation AX. Furthermore, the contact of edges 15b of the hole section 15 with the pair of first elements 21 in the horizontal direction restricts the horizontal displacement of the cover 14. The design can thus prevent the cover 14 from coming loose due to horizontal displacement. The cover 14 is also restricted in its vertical displacement while the opening 13 is closed by the cover 14, i.e., in a state as shown in Figure 22. Fig. Figure 21 shows that the projections 35 are spaced apart from the cover 14 in the direction of the positive Z-axis. Consequently, when the cover 14 is moved in the direction of the positive Z-axis, it comes into contact with the projections 35. This design restricts vertical movement of the cover 14 while the opening 13 is closed by the cover 14. The restriction of horizontal and vertical movement of the cover 14 described above prevents the cover 14 from coming loose.

[0030] As described above, the cover 14 in the control unit 1 according to embodiment 6 enables the control unit 1 to have increased strength. Design 7

[0031] The cover, which serves as the second element, can have a different shape than in embodiment 6. With reference to Fig. 23. According to embodiment 7, the control unit 1 includes a cover 16. The control unit 1 according to embodiment 7 differs from the control unit 1 according to embodiment 1 in that it includes the cover 16 instead of the cover 12 and the second elements 22. In embodiment 7, the cover 16 serves as the second elements. The cover 16, which serves as the second elements, enables the control unit 1 to have increased strength.

[0032] As in Fig. 23 and Fig. As shown in Figure 24, the cover 16 has perforated sections 17 that include through holes. An edge 17a of each perforated section 17 is in contact with the lower ends of the notched sections 33 of the pair of first elements 21. The contact of the edge 17a of the perforated section 17 with the lower ends of the notched sections 33 causes the cover 16 to be supported by the pair of first elements 21 in such a way that it is rotatable about the axis of rotation AX. Furthermore, the contact of the edges 17b of the perforated section 17 with the pair of first elements 21 restricts horizontal displacement of the cover 16. The design thus prevents the cover 16 from coming loose due to horizontal displacement. The cover 16 is also restricted in its vertical displacement while the opening 13 is closed by the cover 16, i.e., in a state as shown in Figure 24. Fig.Figure 23 shows that the projections 35 are spaced apart from the cover 16 in the direction of the positive Z-axis. Consequently, when the cover 16 is moved in the direction of the positive Z-axis, it comes into contact with the projections 35. This design restricts vertical movement of the cover 16 while the opening 13 is closed by the cover 16. The restriction of horizontal and vertical movement of the cover 16 described above prevents the cover 16 from coming loose.

[0033] As described above, the cover 16 in the control unit 1 according to embodiment 7 enables the control unit 1 to have increased strength.

[0034] Some of the embodiments described above can be combined arbitrarily. For example, the control unit 1 can comprise the pair of first elements 25 according to embodiment 2 and the second element 22 according to embodiment 2. Alternatively, the control unit 1 can comprise the pair of first elements 25 according to embodiment 2 and the second element 26 according to embodiment 3. Alternatively, the control unit 1 can comprise the pair of first elements 25 according to embodiment 2 and the second element 27 according to embodiment 4. Alternatively, the control unit 1 can comprise the pair of first elements 25 according to embodiment 2 and the second element 28 according to embodiment 5. Alternatively, the control unit 1 can comprise the pair of first elements 25 according to embodiment 2 and the cover 14 or 16.

[0035] The embodiments described above should not be interpreted as limiting the present disclosure. The opening 13 may be provided on a surface of the housing 11 intersecting the horizontal direction, on the vertical top or bottom surface of the housing 11, or on a surface of the housing 11 intersecting the vertical direction instead of on a surface of the housing 11 orthogonal to the horizontal direction. The embodiment may include any number of suspension fittings 20. For example, a single suspension fitting 20 may be provided in the center of the cover 12 in the direction of the X-axis to suspend the cover 12. Reference character list 1 control unit for a rail vehicle 2 Control unit 11 cases 12, 14, 16 Cover 12a, 21a, 22a, 32a Main area 13 Opening 15, 17, 41, 43, 46 hole section 15a, 15b, 17a, 17b, 41a, 41b, 44a, 44b, 46a, 46b edge 20 Suspension fitting 21, 25 First element 22, 26, 27, 28 Second element 23, 24 rivets 27a Side surface 31, 36 First metal plate 32, 37, 53 Central Section 33, 38 notch section 34, 39, 42 Rivet hole 35, 40 lead 44 First hole segment 45 Second hole segment 51 Second metal plate 52 Final section AX rotary axis

Claims

[1] Control unit (1) for a rail vehicle, comprising: a housing (11) which is provided with an opening (13); a cover (12, 14, 16) to cover the opening (13); a pair of first elements (21, 25) to be attached to the housing (11); and a second element (22, 26, 27, 28) having a plate shape, wherein the second element (22, 26, 27, 28) is detachably attached to the pair of first elements (21, 25), wherein each of the first two elements (21, 25) has a notch section (33, 38), the pair of first elements (21, 25) comprises a first metal plate (31, 36) with curved end sections and a central section (32, 37) arranged between the end sections, and the central section (32, 37) of the first metal plate (31, 36) is attached to the housing (11) to attach the pair of first elements (21, 25) to the housing (11), the second element (22, 26, 27, 28) has a hole section (15, 17, 41, 43, 46) that includes a through hole penetrating both main surfaces (22a) of the second element (22, 26, 27, 28), or that includes a pair of notches extending from respective side surfaces (27a) of the second element (22, 26, 27, 28) in directions approaching each other, Contact of an edge (15a, 17a, 41a, 44a, 46a) of the hole section (15, 17, 41, 43, 46) with vertically lower ends of edges of the notch sections (33, 38) causes the second element (22, 26, 27, 28) to be supported by the pair of first elements (21, 25) in such a way that it is rotatable about an axis of rotation (AX), a contact of edges (15a, 17a, 41a, 44a, 46a) of the hole section (15, 17, 41, 43, 46) with the pair of first elements (21, 25) restricts a displacement of the second element (22, 26, 27, 28), and the second element (22, 26, 27, 28) is attached to the cover (12, 14, 16) and rotates integrally with the cover (12, 14, 16) to cause the opening (13) to open or close. [2] Control unit (1) according to claim 1, wherein the opening (13) is provided on a surface of the housing (11) orthogonal to a horizontal direction, the central section (32, 37) of the first metal plate (31, 36) has a main surface (32a) that is orthogonal to the horizontal direction, the central section (32, 37) of the first metal plate (31, 36) is attached to a surface of the housing (11) which is provided with the opening (13), and the end sections of the first metal plate (31, 36) have main surfaces (21a) that are opposite each other in the horizontal direction. [3] Control unit (1) according to claim 1, wherein the opening (13) is provided on a surface of the housing (11) orthogonal to a horizontal direction, the central section (32, 37) of the first metal plate (31, 36) has a main surface (32a), is orthogonal to a vertical direction, the central section (32, 37) of the first metal plate (31, 36) is attached to a vertical upper surface of the housing (11), and the end sections of the first metal plate (31, 36) have main surfaces (21a) that are opposite each other in the horizontal direction. [4] Control unit (1) according to one of claims 1 to 3, wherein the hole section (15, 17, 41, 43, 46) comprises a first hole segment (44) and a second hole segment (45), wherein the first hole segment (44) penetrates the two main surfaces (22a) of the second element (22, 26, 27, 28), wherein the second hole segment (45) penetrates the two main surfaces (22a) of the second element (22, 26, 27, 28) and is connected to the first hole segment (44), wherein the second hole segment (45) has a width that is greater than a width of the first hole segment (44) in an orientation direction of the pair of first elements (21, 25), and A contact of an edge (44a) of the first hole segment (44) with the lower ends of the edges of the notch sections (33, 38) causes the second element (22, 26, 27, 28) to be supported by the pair of first elements (21, 25) in such a way that it can be rotated about the axis of rotation (AX). [5] Control unit (1) according to one of claims 1 to 4, wherein the second element (22, 26, 27, 28) comprises a second metal plate (51) with curved end sections (52), wherein the end sections (52) are opposite each other in an orientation direction of the pair of first elements (21, 25). [6] Control unit (1) according to one of claims 1 to 5, wherein each of the two first elements (21, 25) has a projection (35, 40), the projection (35, 40) being arranged in a vertical direction above and spaced apart from the second element (22, 26, 27, 28), while the opening (13) is closed by the cover (12, 14, 16). [7] Control unit (1) according to one of claims 1 to 6, wherein the second element (22, 26, 27, 28) is integrated into the cover (12, 14, 16). [8] Control unit (1) according to one of claims 1 to 7, further comprising device for controlling the rail vehicle, wherein the device is housed inside the housing (11).

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