Industrial vehicles

Abstract

To provide an industrial vehicle capable of preventing water from getting on electrical components inside the vehicle body and preventing a decrease in workability when connecting electrical components. [Solution] An auto power off switch 41 is attached to an upper wall 22 of a fuel cell system 10 by a bracket 31. A main body-side holder 42 has a main body-side top plate 43 that covers a switch main body 41a and wiring from above, and a holder wall 44 that holds the switch main body 41a. The main body-side holder 42 has a first waterproof wall 46 and a second waterproof wall 47 that extend from both end edges of the main body-side top plate 43 in the second direction Y toward the upper wall 22 and cover the switch main body 41a and wiring. The connector-side holder 51 has a connector-side top plate 52 that covers a control unit-side connector 65 and a switch-side connector from above, and one side of the connector-side top plate 52 in the second direction Y of the connector-side holder 51 is open.

Description

[Technical Field]

[0001] The present invention relates to an industrial vehicle. [Background technology]

[0002] An industrial vehicle has a vehicle body and a fuel cell system as a power source. The fuel cell system is housed inside the vehicle body. Since industrial vehicles are often used outdoors or in other environments where they are prone to getting wet, they are equipped with waterproofing (see, for example, Patent Document 1). The industrial vehicle disclosed in Patent Document 1 is equipped with a charging port with a socket located on top of the counterweight. The charging port connects a charging cable for charging to a charging circuit for the battery. The charging cable is supported inside the vehicle body by a holder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-156017 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is difficult to provide waterproofing to the entire body of an industrial vehicle. Therefore, in the industrial vehicle of Patent Document 1, water may penetrate into the interior of the vehicle body from the outside. If water penetrates into the interior of the vehicle body and splashes around, there is a risk that electrical components located in the path of the splashed water may become wet. Therefore, measures to prevent water from spilling onto electrical components are desired, but there is a concern that such measures may reduce the ease of connecting electrical components. [Means for solving the problem]

[0005] An industrial vehicle for solving the above problems has a fuel cell system housed inside a vehicle body, the fuel cell system having a housing that houses a fuel cell stack, a bracket attached to an upper wall of the housing, and an electrical component attached to the housing by the bracket, the electrical component having a main body held by the bracket and an electrical component side connector connected to the main body via wiring, the electrical component side connector being connected to an other component side connector that is electrically connected to another component different from the electrical component via other component wiring, the bracket being an industrial vehicle having a main body side holding part that holds the main body and a other component side connector that holds the other component side connector. and a connector side holding portion arranged in a first direction, the main body side holding portion having a main body side top plate that covers the main body and the wiring from above, a holding wall that extends from an edge of the main body side top plate opposite the connector side holding portion toward the top wall in the first direction to hold the main body, and a waterproof wall that extends from both end edges of the main body side top plate in a second direction perpendicular to the first direction toward the top wall to cover the main body and the wiring, the connector side holding portion having a connector side top plate that covers the other component side connector and the electrical component side connector from above, and the connector side holding portion is open on at least one side of the connector side top plate in the second direction perpendicular to the first direction.

[0006] Water that has entered the vehicle body may fall near the bracket on the upper wall. As the water falls, it splashes, but the waterproof wall prevents the splashed water from entering the inside of the body-side holding part. As a result, the industrial vehicle can prevent water from getting on the parts of the body and wiring held by the body-side holding part.

[0007] Furthermore, the connector-side holding portion is open on at least one side of the connector-side top plate in the second direction. In other words, the connector-side holding portion is not an enclosed space, so the work of holding the other-component connector in the connector-side holding portion and the work of connecting the other-component connector and the electrical-component connector can be easily performed. As a result, the industrial vehicle can prevent water from getting on electrical components inside the vehicle body, and can also prevent a decrease in the workability of connecting electrical components, thereby improving the workability of connecting electrical components.

[0008] In an industrial vehicle, the connector side holding portion extends from one end edge of the connector side top plate in the second direction toward the upper wall and has a connector mounting wall for mounting the other component side connector, and the other end side of the connector side holding portion in the second direction is open.

[0009] This allows the other component side connector to be easily attached by the connector mounting wall, compared to when the other component side connector is attached to the connector side top plate. In an industrial vehicle, the main body side top plate has a narrow portion that continues to the connector side holding portion in the first direction, and the narrow portion preferably becomes narrower in width as it moves from the holding wall side to the connector side holding portion side in the first direction.

[0010] This allows the area of ​​the main body top plate in a plan view to be smaller than when the main body top plate extends at a constant width from the retaining wall side toward the connector top plate side in the first direction. This reduces the amount of water that accumulates on the top surface of the main body top plate, thereby reducing the amount of water that seeps into the interior from the top surface of the main body top plate. As a result, the industrial vehicle can prevent water from getting on electrical components inside the vehicle body.

[0011] In the industrial vehicle, the connector-side top plate may be located higher than the main body-side top plate. This makes it possible to prevent the connector top plate from interfering with the other component side connector even if the other component side connector is installed on the top wall in such a manner that it extends diagonally upward from the electrical component side connector as it moves away from the electrical component side connector.

[0012] In the industrial vehicle, the connector-side top plate may have a bent portion bent upward at one end opposite the main body-side top plate from both end portions in the first direction. This makes it possible to prevent the connector side top plate from interfering with the wiring for other components, even if the wiring for other components extending from the connector on the other component side is routed in such a way that it extends diagonally upward from the connector on the electrical component side as it moves away from the connector on the other component side.

[0013] In an industrial vehicle, a connecting wall is interposed between the connector side top plate and the main body side top plate, and the connector side top plate and the main body side top plate are connected to the connecting wall, and the connecting wall has a protrusion that protrudes downward below the underside of the main body side top plate at a position located below the point where the main body side top plate is connected.

[0014] With this, even if water adhering to the underside of the connector top plate moves along the underside of the connector top plate toward the main body holder due to vibration of the industrial vehicle, the protruding portion of the connection wall can stop the water from moving toward the main body holder. This prevents water adhering to the underside of the connector top plate from moving toward the main body holder. As a result, the industrial vehicle can prevent water from getting on electrical components inside the main body holder.

[0015] In the industrial vehicle, the main body side holding portion may have a cable support wall extending above the main body side top plate. This allows the cable support wall to support the cable pulled out from inside the housing to the vicinity of the bracket. The cable is supported by the cable support wall so that it extends above the main body top plate. This allows the cable to be connected to other components above the main body top plate. Therefore, in a configuration where the cable is connected to other components above the main body top plate, interference between the main body top plate and the cable can be eliminated. [Effects of the Invention]

[0016] The present invention can prevent electrical components inside the vehicle body from being exposed to water, and can also prevent a decrease in the workability of connecting electrical components. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a side view showing a forklift. [Figure 2] FIG. 2 is a perspective view showing a forklift. [Figure 3] FIG. 3 is a perspective view showing a fuel cell system. [Figure 4] FIG. 4 is a perspective view showing the battery and the battery bracket. [Figure 5] FIG. 5 is a side view showing the mounting structure of the auto power off switch. [Figure 6] FIG. 6 is a perspective view showing the bracket. [Figure 7] FIG. 7 is a perspective view showing the bracket. [Figure 8] FIG. 8 is a side view showing the state in which the switch-side connector and the control-unit-side connector are connected. [Figure 9] FIG. 9 is a perspective view showing the periphery of the bracket. DETAILED DESCRIPTION OF THE INVENTION

[0018] In the following, an embodiment in which the industrial vehicle is a forklift will be described. In the following description, the terms "front, back, top, bottom, left, right" and "back" refer to the front, back, top, bottom, left, and right directions relative to the position of the operator operating the forklift facing forward (in the forward direction) of the forklift.

[0019] <Forklift> 1, the forklift 100 has a vehicle body 110, a cargo handling motor 130, a travel motor 131, and a fuel cell system 10. The vehicle body 110 has a main body 111 and a hood 112 provided on the upper rear side of the main body 111. A driver's seat 120 on which the driver of the forklift 100 is seated is provided on the hood 112.

[0020] 2, pocket 114 is recessed from the top surface of hood portion 112 at a position on one side of driver's seat 120 in the left-right direction within hood portion 112. In addition, a drain hole 114a is formed at the bottom of pocket 114, connecting pocket 114 to the interior of vehicle body 110.

[0021] The main body 111 has a floor surface 111a below the driver's seat 120. The floor surface 111a is formed by the upper surface of a front floor panel 113a and the upper surface of a rear floor panel 113b. The rear floor panel 113b is integrated with the hood portion 112. The hood portion 112 is tiltable toward the rear of the vehicle body 110. When the hood portion 112 is tilted toward the rear, the rear floor panel 113b also tilts integrally with the hood portion 112. The front floor panel 113a is configured to be tiltable toward the front.

[0022] 1, the cargo handling motor 130 operates the cargo handling device of the forklift 100. The travel motor 131 drives the forklift 100. The cargo handling motor 130 and the travel motor 131 are mounted on a vehicle body 110. The fuel cell system 10 generates electric power to be supplied to the cargo handling motor 130 and the travel motor 131.

[0023] <Fuel cell system> The fuel cell system 10 is housed inside a vehicle body 110. Specifically, the fuel cell system 10 is housed in a housing section 115 defined in the vehicle body 110. Although not shown, the housing section 115 opens upward when the front floor panel 113a is tilted forward and the rear floor panel 113b is tilted rearward. This allows workers and the like to access the fuel cell system 10 housed in the housing section 115 from above.

[0024] 3, the fuel cell system 10 includes a fuel cell stack 11, a housing 21 that houses the fuel cell stack 11, an auto power off switch 41 as an electrical component, and a bracket 31 that mounts the auto power off switch 41 on the top wall 22. The fuel cell system 10 also includes a battery 61, a battery bracket 32, and a control unit 63.

[0025] The housing 21 has a rectangular parallelepiped shape. The housing 21 has a housing main body 23 that opens upward and an upper wall 22 that closes the opening of the housing main body 23. The housing 21 has a rectangular parallelepiped shape with its long sides extending in the left-right direction of the forklift 100 and its short sides extending in the front-rear direction of the forklift 100.

[0026] <Fuel cell stack> The fuel cell stack 11 is housed inside the housing 21. The fuel cell stack 11 is made up of a plurality of stacked fuel cell units. The fuel cell units are solid molecular fuel cells. The fuel cell stack 11 generates electricity through an electrochemical reaction between hydrogen as a fuel gas and oxygen in the air as an oxidant gas. The cargo motor 130 and the travel motor 131 of the forklift 100 are driven by the electricity generated by the fuel cell stack 11. The electricity generated by the fuel cell stack 11 is also used to charge the battery 61.

[0027] Two power cables 12 are connected to the fuel cell stack 11. The two power cables 12 pass through the top wall 22 and are pulled out from inside the housing 21 to the outside. A power connector 13 is connected to the power cables 12 pulled out to the outside of the housing 21. Although not shown, the power connector 13 is connected to the vehicle body 110. As a result, the electric power generated by the fuel cell stack 11 is supplied to the vehicle body 110.

[0028] <Control unit> A control unit 63, which is a component different from the auto power off switch 41, is disposed on the top wall 22 of the housing 21. The control unit 63 controls the fuel cell system 10. A control unit wiring 64, which serves as wiring for other components, is connected to the control unit 63. As shown in FIG. 5 , a control unit side connector 65, which serves as a connector for other components, is connected to the control unit wiring 64. The control unit side connector 65 is electrically connected to the auto power off switch 41.

[0029] <Battery bracket and battery> 3, 4, and 9, the battery 61 is attached to the upper wall 22 by a battery bracket 32. The battery bracket 32 ​​has a rectangular plate-shaped battery mounting portion 33, legs 34 extending from both longitudinal edges of the battery mounting portion 33 toward the upper wall 22, and a battery holding portion 35 fixed to the battery mounting portion 33. The battery 61 supplies power to the control unit 63, auxiliary machinery, etc. when the fuel cell system 10 is started up.

[0030] Each leg 34 is bent relative to the battery mounting portion 33 and extends toward the upper wall 22, and is bifurcated. Each leg 34 has a fixing piece 34a at the end of the bifurcation. The battery bracket 32 ​​has four fixing pieces 34a.

[0031] The battery bracket 32 ​​is fixed to the rear side of the upper wall 22. The battery bracket 32 ​​is fixed to the upper wall 22 by threading a bolt B1 that passes through the fixing piece 34a into a nut (not shown) that is fixed to the back surface of the upper wall 22.

[0032] The battery holding portion 35 holds the battery 61 placed on the upper surface of the battery mounting portion 33. The battery holding portion 35 has a holding portion main body 35a arranged along three of the four sides of the rectangular parallelepiped battery 61, namely the rear side and both left and right side faces, and a clamping plate 35b that sandwiches the battery 61 together with the battery mounting portion 33. The battery 61 is held by the battery holding portion 35 by pressing the clamping plate 35b toward the battery mounting portion 33 using fastening members 36 passed through the clamping plate 35b and the holding portion main body 35a.

[0033] <Auto power off switch> The auto power-off switch 41 is a switch for canceling the function of turning off the power of the forklift 100 after a certain period of time has elapsed.

[0034] 5, 6, and 9, the auto power off switch 41 is attached to the upper wall 22 by the bracket 31. In other words, the auto power off switch 41 is attached to the outer surface of the housing 21 by the bracket 31. Therefore, the auto power off switch 41 is exposed to the outside of the housing 21.

[0035] The auto power off switch 41 has a switch body 41a as the main body of the electrical component, a plurality of wires 41b electrically connected to the switch body 41a, and a switch side connector 41c as the electrical component side connector connected to the switch body 41a via the plurality of wires 41b.

[0036] The switch-side connector 41c is connected to the control-unit-side connector 65. In other words, the switch-side connector 41c is connected to a control unit 63, which is different from the auto power off switch 41, via a control-unit wiring 64. When the switch body 41a of the auto power off switch 41 is pressed, a signal output from the auto power off switch 41 is input to the control unit 63 via the wiring 41b, the switch-side connector 41c, the control-unit-side connector 65, and the control-unit wiring 64. The control unit 63 receives the signal from the auto power off switch 41 and performs control to cancel the function of turning off the power of the forklift 100.

[0037] <bracket> 6, 7, and 9, the bracket 31 is attached to the upper wall 22 of the housing 21. The bracket 31 has a main body-side holding portion 42 that holds the switch main body 41a, a connector-side holding portion 51 that holds the control unit-side connector 65, and a connection wall 53 that connects the main body-side holding portion 42 and the connector-side holding portion 51. The bracket 31 is made of a metal plate. Therefore, the auto power off switch 41 has a switch main body 41a that is held by the bracket 31.

[0038] The body-side holding portion 42 and the connector-side holding portion 51 are aligned in a first direction X. The first direction X coincides with the left-right direction of the forklift 100. The bracket 31 has an elongated shape with its longitudinal axis extending in the first direction X and its transverse axis extending in a second direction Y perpendicular to the first direction X. The second direction Y coincides with the front-rear direction of the forklift 100. Since the longitudinal directions of the body-side holding portion 42 and the connector-side holding portion 51 coincide with the first direction X, the longitudinal directions of the body-side holding portion 42 and the connector-side holding portion 51 are each defined as the first direction X. Furthermore, since the transverse directions of the body-side holding portion 42 and the connector-side holding portion 51 coincide with the second direction Y, the transverse directions of the body-side holding portion 42 and the connector-side holding portion 51 are each defined as the second direction Y.

[0039] <Main unit holding part> The main body side holding portion 42 has a main body side top plate 43, a holding wall 44 extending from the main body side top plate 43, and a first waterproof wall 46 and a second waterproof wall 47 extending from the main body side top plate 43.

[0040] The main body side top plate 43 is a long plate extending longitudinally in the first direction X. In a plan view of the main body side top plate 43 in the plate thickness direction, the main body side top plate 43 has a first edge 43a on one side in the first direction X and a second edge 43b on the other side in the first direction X. In addition, the main body side top plate 43 has a third edge 43c on one side in the second direction Y and a fourth edge 43d on the other side in the second direction Y.

[0041] In a plan view of the main body side top plate 43, the first edge 43a and the second edge 43b are parallel. Furthermore, in a plan view of the main body side top plate 43, the first edge 43a is longer than the second edge 43b. In a plan view of the main body side top plate 43, the fourth edge 43d extends linearly in the first direction X. In a plan view of the main body side top plate 43, the third edge 43c is bent midway in the first direction X. The main body side top plate 43 has a narrow portion 431 that continues to the connector side holding portion 51 in the first direction X. The narrow portion 431 narrows from the holding wall 44 side toward the connector side holding portion 51 side in the first direction X. Therefore, the main body side top plate 43 has a trapezoidal shape in a plan view. The main body side top plate 43 covers the switch main body 41a and the wiring 41b from above.

[0042] The retaining wall 44 extends from a first edge 43a of the main body-side top plate 43. The retaining wall 44 extends from the first edge 43a, which is the edge of the main body-side top plate 43 opposite the connector-side retaining portion 51, toward the upper wall 22 in the first direction X. The retaining wall 44 is perpendicular to the main body-side top plate 43 and has a rectangular plate shape. The longer side of the retaining wall 44 extends in the second direction Y, and the shorter side of the retaining wall 44 extends in the up-down direction. A switch main body 41a of the auto power off switch 41 is held in the center of the retaining wall 44, and the switch main body 41a penetrates the retaining wall 44 and protrudes outside the bracket 31. The switch main body 41a can be operated on the outer surface side of the retaining wall 44.

[0043] The first waterproof wall 46 extends from the third edge 43c of the main body-side top panel 43 toward the upper wall 22. The first waterproof wall 46 has a main body side wall portion 461 closer to the retaining wall 44 in the first direction X, and a connector side wall portion 462 closer to the connector-side retaining portion 51 in the first direction X. The longitudinal direction of the main body side wall portion 461 extends in the first direction X, and the lateral direction of the main body side wall portion 461 extends in the up-down direction. The longitudinal direction of the connector side wall portion 462 extends in a direction intersecting the first direction X, and the lateral direction of the connector side wall portion 462 extends in the up-down direction. The first waterproof wall 46 is bent at the boundary between the main body side wall portion 461 and the connector side wall portion 462. The connector side wall portion 462 extends obliquely with respect to the main body side wall portion 461. Specifically, the connector side wall 462 is inclined so as to move forward away from the fixing piece 34a of the battery bracket 32. The connector side wall 462 extends from the edge of the third edge 43c that is along the narrow portion 431. The first waterproof wall 46 covers the underside of the main body side top plate 43 from the rear side, which is one of both sides of the main body side top plate 43 in the second direction Y.

[0044] The second waterproof wall 47 extends from the fourth edge 43d of the main body side top plate 43 toward the upper wall 22. The second waterproof wall 47 is a long plate extending straight along the fourth edge 43d. The long side of the second waterproof wall 47 extends in the first direction X, and the short side of the second waterproof wall 47 extends in the up-down direction. The second waterproof wall 47 covers the underside of the main body side top plate 43 from the front side, of both sides of the main body side top plate 43 in the second direction Y.

[0045] The main body side holding portion 42 extends from both end edges of the main body side top plate 43 in the second direction Y toward the upper wall 22 and has a first waterproof wall 46 and a second waterproof wall 47 that cover the switch main body 41a and wiring 41b.

[0046] The first waterproof wall 46 has a bolt insertion piece 46a extending from the edge opposite the main body side top plate 43. The second waterproof wall 47 has a bolt insertion piece 47a extending from the edge opposite the main body side top plate 43.

[0047] 5, the main body-side holding portion 42 defines a storage space 48 surrounded by a main body-side top plate 43, a holding wall 44, a first waterproof wall 46, and a second waterproof wall 47. The storage space 48 opens laterally only at a location along the second edge 43b of the main body-side top plate 43. In other words, the storage space 48 is closed by the main body-side top plate 43, the holding wall 44, the first waterproof wall 46, and the second waterproof wall 47, except for the location along the second edge 43b of the main body-side top plate 43.

[0048] As shown in Figures 6, 7, and 9, the main body side holding part 42 has a cable support wall 49 joined to the outer surface of the second waterproof wall 47. The cable support wall 49 is in the shape of a long plate. The cable support wall 49 has a joint part 49a joined to the outer surface of the second waterproof wall 47 and a support part 49b extending obliquely from the joint part 49a. The support part 49b extends obliquely from the second waterproof wall 47 toward above the main body side top plate 43. Therefore, the main body side holding part 42 has the cable support wall 49 extending above the main body side top plate 43.

[0049] <Connector side holding part> The connector side holding portion 51 has a connector side top plate 52 and a connector mounting wall 54 extending from the connector side top plate 52 .

[0050] The connector side top plate 52 is a long plate extending longitudinally in the first direction X. In a plan view of the connector side top plate 52 in the plate thickness direction, the connector side top plate 52 has a first edge 52a on one side in the first direction X and a second edge 52b on the other side in the first direction X. The connector side top plate 52 also has a third edge 52c on one side in the second direction Y and a fourth edge 52d on the other side in the second direction Y.

[0051] In a plan view of the connector-side top plate 52, the first edge 52a and the second edge 52b are parallel. Furthermore, in a plan view of the connector-side top plate 52, the first edge 52a is longer than the second edge 52b. In a plan view of the connector-side top plate 52, the third edge 52c extends linearly in the first direction X. In a plan view of the connector-side top plate 52, the fourth edge 52d bends toward the second edge 52b midway in the first direction X. In a plan view of the connector-side top plate 52, the connector-side top plate 52 narrows from midway in the first direction X toward the second edge 52b. Therefore, in a plan view of the connector-side top plate 52, the connector-side top plate 52 has a trapezoidal shape. The connector-side top plate 52 has a bent portion 521 formed by bending upward the end opposite the main body-side top plate 43, out of both end portions in the first direction X.

[0052] A clip 55 is attached to the connector mounting wall 54, and the control unit-side connector 65 is attached by the clip 55. The connector mounting wall 54 extends from the fourth edge 52d of the connector-side top plate 52. That is, the connector-side holding portion 51 has the connector mounting wall 54 extending from one edge of the connector-side top plate 52 in the second direction Y toward the upper wall 22. The connector mounting wall 54 is perpendicular to the connector-side top plate 52. The connector mounting wall 54 is a long plate extending straight along the fourth edge 52d. The longitudinal side of the connector mounting wall 54 extends in the up-down direction, and the lateral side of the connector mounting wall 54 extends in the first direction X. The connector mounting wall 54 covers the underside of the connector-side top plate 52 from the front side, out of both sides of the connector-side top plate 52 in the second direction Y. That is, on the underside of the connector-side top plate 52, of both sides in the second direction Y, the side opposite the connector mounting wall 54, i.e., the rear side, is open. Therefore, the connector-side holding part 51 is open on the other end side in the second direction Y. In other words, the connector-side holding part 51 is open on one side of the connector-side top plate 52 in the second direction Y.

[0053] The connector-side top plate 52 covers the control-side connector 65 and the switch-side connector 41c from above, and the connector mounting wall 54 covers the control-side connector 65 and the switch-side connector 41c from one side in the second direction Y.

[0054] <Connecting wall> As shown in FIG. 6 , the connecting wall 53 is L-shaped and extends along the main body-side top plate 43 and the second waterproof wall 47, as well as the connector-side top plate 52 and the connector mounting wall 54. The connecting wall 53 is formed from a metal plate that forms the connector-side holding portion 51. The connecting wall 53 extends from a first edge 52a of the connector-side top plate 52 toward the main body-side holding portion 42. The connecting wall 53 is interposed between the main body-side top plate 43 and the connector-side top plate 52, and is also interposed between the second waterproof wall 47 and the connector mounting wall 54. The connecting wall 53 is perpendicular to the connector-side top plate 52 and the main body-side top plate 43. The connector-side top plate 52 and the main body-side top plate 43 are connected to the connecting wall 53.

[0055] As described above, the connector mounting wall 54 extends from the fourth edge 52d of the connector side top plate 52 so as to be perpendicular to the connector side top plate 52. Therefore, the connection wall 53 is perpendicular to both the connector side top plate 52 and the connector mounting wall 54.

[0056] The connecting wall 53 is L-shaped and has a first wall portion 53a connected to the main body-side top plate 43 and the connector-side top plate 52, and a second wall portion 53b connected to the second waterproof wall 47 and the connector mounting wall 54. The connecting wall 53 is connected to the main body-side top plate 43 and the second waterproof wall 47 on the surface facing the main body-side holding portion 42 in the first direction X, and is connected to the connector-side top plate 52 and the connector mounting wall 54 on the surface facing the connector-side holding portion 51 in the first direction X.

[0057] The connecting wall 53 makes the positions of the upper surface of the main body side top plate 43 and the upper surface of the connector side top plate 52 different in the thickness direction of the main body side top plate 43 and the connector side top plate 52, and also makes the positions of the lower surface of the main body side top plate 43 and the lower surface of the connector side top plate 52 different in the thickness direction of the main body side top plate 43 and the connector side top plate 52. In other words, the connecting wall 53 creates a step between the main body side top plate 43 and the connector side top plate 52. As a result, when the bracket 31 is placed on the upper surface of the upper wall 22, the connector side top plate 52 is higher than the main body side top plate 43.

[0058] The connecting wall 53 also has a protrusion 53c in a portion of the first wall portion 53a that is located below the location where the main body-side top plate 43 is connected. The protrusion 53c protrudes downward from the underside of the main body-side top plate 43 over the entire area of ​​the main body-side top plate 43 in the second direction Y at the location where the main body-side top plate 43 is connected. Although the protrusion 53c protrudes downward from the underside of the main body-side top plate 43, the area below the protrusion 53c is open to communicate between the accommodation space 48 and the interior of the connector-side holding portion 51, allowing the switch-side connector 41c to pass below the protrusion 53c.

[0059] <Auto power off switch mounting structure> 3 to 5 and 9, the bracket 31 is fixed to the upper wall 22 on the front side of the battery bracket 32, with the connector-side holding portion 51 adjacent to the battery bracket 32 ​​in the front-to-rear direction. The bracket 31 is fixed to the upper wall 22 by threading a bolt B2, which is inserted through a bolt insertion piece 46a extending from the first waterproof wall 46 and a bolt insertion piece 47a extending from the second waterproof wall 47, into a nut on the back side of the upper wall 22.

[0060] The bracket 31 is fixed to the upper wall 22 with the first direction X aligned with the left-right direction of the forklift 100. The body-side holding portion 42 is located on the right side of the battery bracket 32, in front of the front leg 34 and adjacent to the leg 34 in the front-rear direction. Therefore, a first waterproof wall 46 of the body-side holding portion 42 is interposed between the leg 34 and an accommodation space 48 defined by the body-side holding portion 42. In addition, the connector-side holding portion 51 is open toward the battery bracket 32 ​​forward of the battery mounting portion 33 of the battery bracket 32.

[0061] The switch main body 41a of the auto power off switch 41 is held by the holding wall 44. The wiring 41b extends in the left-right direction in the accommodation space 48. Therefore, the main body side top plate 43 covers part of the switch main body 41a and the wiring 41b from above. Furthermore, the first waterproof wall 46 and the second waterproof wall 47 cover part of the switch main body 41a and much of the wiring 41b from both the front and rear. As a result, part of the switch main body 41a and the wiring 41b are accommodated in the accommodation space 48. Furthermore, part of the switch side connector 41c is drawn out from the accommodation space 48 to the underside of the connector side top plate 52. The switch side connector 41c passes below the protrusion 53c and is arranged between the underside of the connector side top plate 52 and the inner surface of the connector mounting wall 54.

[0062] A control unit-side connector 65 is attached to the connector mounting wall 54 by a clip 55. The switch-side connector 41c of the auto power off switch 41 is connected to the control unit-side connector 65. The connector-side top plate 52 covers the switch-side connector 41c and the control unit-side connector 65 from above.

[0063] As shown in Fig. 5, the control unit wiring 64 connected to the control unit side connector 65 extends obliquely upward from the control unit side connector 65, and then extends obliquely downward toward the control unit 63 as shown in Fig. 3. The bent portion 521 of the connector side top plate 52 extends obliquely upward along the control unit wiring 64 so as not to interfere with the routing of the control unit wiring 64 extending obliquely upward from the control unit side connector 65.

[0064] The power cable 12 drawn out from inside the housing 21 is attached by a clip 39 so as to run along the cable support wall 49. After being drawn out from the upper wall 22, the power cable 12 is supported by the cable support wall 49 in a manner that extends obliquely upward. The power connector 13 is connected to the vehicle body 110.

[0065] <How to install the auto power off switch> Next, a method for attaching the auto power off switch 41 to the top wall 22 by means of the bracket 31 will be described. The battery 61 is attached to the top wall 22 by means of the battery bracket 32. A control unit wiring 64 is connected to the control unit 63, and two power cables 12 pass through the top wall 22 and are drawn from the inside to the outside of the housing 21. The control unit wiring 64 is routed by a bracket (not shown) so as to extend obliquely upward from the control unit 63 and then descend toward the top wall 22. Therefore, the position of the control unit side connector 65 is determined to a certain extent.

[0066] 8, the worker holds the switch main body 41a on the holding wall 44, and holds the auto power off switch 41 on the main body side holding portion 42. At this time, the wiring 41b is not fixed to the main body side holding portion 42, so the wiring 41b and the switch side connector 41c can be moved to any position.

[0067] Next, the worker grasps the bracket 31 with which the auto power off switch 41 is integrated and moves it close to the top wall 22. Next, the worker attaches the control unit-side connector 65, which has been positioned to a certain extent on the top wall 22, to the connector mounting wall 54 with the clips 55. At this time, because the underside of the connector-side top plate 52 opposite the connector mounting wall 54 is open, the worker can use the opposite side of the connector mounting wall 54 to perform the work of attaching the control unit-side connector 65 to the connector mounting wall 54.

[0068] Next, the worker connects the control unit side connector 65 attached to the connector mounting wall 54 to the switch side connector 41c. At this time, too, the side opposite the connector mounting wall 54 is open, so the worker can use the side opposite the connector mounting wall 54 to connect the control unit side connector 65 to the switch side connector 41c.

[0069] When the switch side connector 41c is connected to the control unit side connector 65, the control unit side connector 65 and the switch side connector 41c are arranged in the space surrounded by the lower surface of the connector side top plate 52 and the inner surface of the connector mounting wall .

[0070] Next, the worker places the bracket 31 on the upper wall 22 and inserts the bolt B2 into the bolt insertion piece 46a of the first waterproof wall 46, and also inserts the bolt B2 into the bolt insertion piece 47a of the second waterproof wall 47. The worker then screws the bolt B2 into a nut provided on the underside of the upper wall 22 to secure the bracket 31 to the upper wall 22. This attaches the auto power off switch 41 to the upper wall 22 by the bracket 31. The wiring 41b of the auto power off switch 41 is housed in the accommodation space 48.

[0071] Next, the worker attaches the two power cables 12 to the cable support wall 49 using the clips 39 and supports the two power cables 12 on the cable support wall 49 . [Operation of the embodiment] Next, the operation of the embodiment will be described.

[0072] For example, when the forklift 100 is used outdoors, water may accumulate in the pocket 114. The water accumulated in the pocket 114 may flow through the drain hole 114a, into the inside of the hood portion 112, and fall to the rear and right side of the upper wall 22, as shown by the arrow in FIG.

[0073] As shown by the arrows in Figure 9, water that falls into the vehicle body 110 may hit the battery mounting portion 33 of the battery bracket 32 ​​or the upper surface of the upper wall 22, causing it to splash around. The water splashes in random directions. In addition, the water splashes with great force.

[0074] The auto power off switch 41 is attached by the bracket 31 near the point where the water falls. However, even if water splashes and heads toward the bracket 31, the water will hit the main body side wall portion 461 and the connector side wall portion 462 of the first waterproof wall 46. This prevents the splashed water from entering the accommodation space 48.

[0075] [Effects of the embodiment] According to the above embodiment, the following effects can be obtained. (1) The bracket 31 has a first waterproof wall 46 extending from the main body top plate 43. Therefore, even if water that has entered the interior of the vehicle body 110 falls and splashes, the first waterproof wall 46 can prevent the splashed water from entering the interior of the main body holding portion 42. As a result, it is possible to prevent water from reaching a portion of the switch main body 41a and the wiring 41b held by the main body holding portion 42. Therefore, the bracket 31 of the forklift 100 can protect the auto power off switch 41 from water splashed inside the vehicle body 110.

[0076] Furthermore, the connector-side holding portion 51 is open at a location adjacent to the first waterproof wall 46 on one side of the connector-side top plate 52 in the second direction Y. For example, unlike the case where the connector-side holding portion 51 has waterproof walls on both sides in the second direction Y, similar to the main body-side holding portion 42, the inner surface of the connector-side holding portion 51 does not form a closed space. In other words, while the bracket 31 forms the main body-side holding portion 42 as a closed space by the first waterproof wall 46, the connector-side holding portion 51 is open on the side of the first waterproof wall 46 in the second direction Y. Therefore, the open space can be used to easily attach the control unit-side connector 65 to the connector mounting wall 54, i.e., to hold the control unit-side connector 65 in the connector-side holding portion 51. Furthermore, when connecting the control unit-side connector 65 attached to the connector mounting wall 54 to the switch-side connector 41c, the side opposite the connector mounting wall 54 is open, so the space opposite the connector mounting wall 54 can be used to connect the control unit-side connector 65 to the switch-side connector 41c. As described above, the forklift 100 can prevent the auto power off switch 41 from being wet inside the vehicle body 110, and can also prevent a decrease in the workability of connecting the auto power off switch 41.

[0077] (2) The connector-side holding portion 51 has a connector mounting wall 54 extending from the connector-side top plate 52. The connector-side holding portion 51 is open on the side opposite the connector mounting wall 54 in the second direction Y. For example, compared to a case in which the connector-side holding portion 51 does not have the connector mounting wall 54 and the control-unit-side connector 65 is held on the connector-side top plate 52, the connector mounting wall 54 makes it easier to mount the control-unit-side connector 65.

[0078] (3) The main body-side top plate 43 has a narrow width portion 431 that is continuous with the connector-side holding portion 51. For example, compared to when the main body-side top plate 43 extends at a constant width from the holding wall 44 side toward the connector-side top plate 52 in the first direction X, the area of ​​the main body-side top plate 43 in a plan view can be made smaller. This reduces the amount of water that accumulates on the main body-side top plate 43, thereby reducing the amount of water that enters the housing space 48 from the upper surface of the main body-side top plate 43.

[0079] (4) The first waterproof wall 46 is bent to fit along the narrow width portion 431 of the main body-side top plate 43. The connector-side wall portion 462 that fits along the narrow width portion 431 is positioned so as not to interfere with the fixing piece 34a of the battery bracket 32. Therefore, by forming the narrow width portion 431 on the main body-side top plate 43, interference between the battery bracket 32 ​​and the bracket 31 is eliminated, and the auto power off switch 41 can be protected from splashed water.

[0080] (5) The connector-side top plate 52 is located higher than the main body-side top plate 43. Therefore, even if the control unit-side connector 65 and the control unit wiring 64 connected to the switch-side connector 41c extend obliquely upward from the switch-side connector 41c, the connector-side top plate 52 is unlikely to interfere with the control unit-side connector 65 and the control unit wiring 64. Therefore, the bracket 31 can be attached to the upper wall 22 while preventing the bracket 31 from interfering with the control unit wiring 64 routed in a desired shape and the control unit-side connector 65 connected to the control unit wiring 64.

[0081] (6) The connector-side top plate 52 has a bent portion 521 formed by bending upward an end portion opposite the main body-side top plate 43, out of both end portions in the first direction X. Therefore, even if the control unit-side connector 65 and the control unit wiring 64 connected to the switch-side connector 41c extend obliquely upward from the switch-side connector 41c, the connector-side top plate 52 is unlikely to interfere with the control unit-side connector 65 and the control unit wiring 64. Therefore, the bracket 31 can be attached to the top wall 22 while preventing the bracket 31 from interfering with the control unit wiring 64 routed in a desired shape and the control unit-side connector 65 connected to the control unit wiring 64.

[0082] (7) The connector-side top plate 52 and the main body-side top plate 43 are joined via a connecting wall 53. The connecting wall 53 has a protrusion 53c that protrudes downward from the underside of the main body-side top plate 43 at a location below the point where the connecting wall 53 is connected to the main body-side top plate 43. As a result, even if water adhering to the underside of the connector-side top plate 52 moves toward the main body-side holder 42 due to vibrations of the forklift 100, for example, the protrusion 53c can block the water before it moves toward the main body-side holder 42. This protects the auto power off switch 41 from water adhering to the underside of the connector-side top plate 52.

[0083] (8) The main body-side holding portion 42 has a cable support wall 49 that extends upward beyond the main body-side top plate 43. The cable support wall 49 supports the power cable 12 drawn out from the top wall 22 and allows the power cable 12 and the power connector 13 to be routed toward the vehicle body. This allows the power cable 12 to be routed so as to extend upward beyond the bracket 31. As a result, the power connector 13 can be connected to the vehicle body 110 above the bracket 31, and the power connector 13 can be easily connected to the vehicle body 110. Furthermore, by providing the cable support wall 49 to the bracket 31, the forklift 100 can support the power cable 12 without increasing the number of parts and by utilizing the available space.

[0084] [Variations] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0085] The bracket 31 does not have to have the cable support wall 49. In this case, the power cable 12 is routed along the upper surface of the main body side top plate 43. The power cable 12 may be supported by the cable support wall 49 without using the clip 39. For example, the power cable 12 may be attached to and supported by the cable support wall 49 by being wrapped around the cable support wall 49 with a cable tie or the like.

[0086] As long as the cable support wall 49 extends above the main body side top plate 43, the direction of extension may be changed as appropriate, the inclination angle of the cable support wall 49 may be changed as appropriate, or the cable support wall 49 may extend so as to be perpendicular to the upper surface of the main body side top plate 43.

[0087] The first wall portion 53a of the connecting wall 53 does not have the protruding portion 53c, and does not have to protrude below the lower surface of the main body-side top plate 43. In this case, the lower end surface of the first wall portion 53a of the connecting wall 53 and the lower surface of the main body-side top plate 43 may be flush with each other, or the lower end surface of the first wall portion 53a may be located above the lower surface of the main body-side top plate 43.

[0088] The bracket 31 may be formed from a single metal plate. In this case, the connecting wall 53 joining the main body-side holding portion 42 and the connector-side holding portion 51 is not provided. The upper surface of the connector-side top plate 52 and the upper surface of the main body-side top plate 43 may be at the same height. In this case, the control unit wiring 64 is routed so as not to extend obliquely upward from the switch-side connector 41c and so as not to interfere with the connector-side top plate 52.

[0089] The top surface of the connector-side top plate 52 may be located lower than the top surface of the main body-side top plate 43. Alternatively, the top surface of the connector-side top plate 52 may be located higher than in the embodiment. In short, the height of the connector-side top plate 52 may be changed as appropriate as long as the connector-side top plate 52 does not interfere with the control unit-side connector 65 and the control unit wiring 64.

[0090] The connecting wall 53 may be inclined with respect to the connector-side top plate 52 and the main body-side top plate 43. For example, the connecting wall 53 may extend obliquely so as to slope downward from the upper surface of the connector-side top plate 52 toward the upper surface of the main body-side top plate 43. In this configuration, the inclination of the connecting wall 53 can prevent interference between the first wall portion 53a of the connecting wall 53 and the wiring 41b.

[0091] The connector-side top plate 52 does not have to have the bent portion 521. In this case, the control unit wiring 64 is arranged so as not to extend obliquely upward from the switch-side connector 41c and so as not to interfere with the connector-side top plate 52.

[0092] The connector-side top plate 52 may be formed so as to extend obliquely upward by the bent portions 521 across multiple stages. The main body-side top plate 43 does not have to have the narrow portion 431. For example, the main body-side top plate 43 may extend with a constant width in the first direction X from the holding wall 44 side toward the connector-side top plate 52. In this case, the first waterproof wall 46 has a rectangular, long plate shape with no boundary between the main body-side wall portion 461 and the connector-side wall portion 462.

[0093] In a plan view of the main body-side top plate 43 seen from the plate thickness direction, the third edge 43c of the main body-side top plate 43 may be gently curved from the retaining wall 44 side toward the connector-side top plate 52, or the third edge 43c may be recessed toward the fourth edge 43d. The first waterproof wall 46 may have any shape as long as it follows the third edge 43c. In short, as long as there is no interference between the first waterproof wall 46 and the fixing piece 34a of the leg 34, the shape of the first waterproof wall 46 and, ultimately, the shape of the main body-side top plate 43 can be changed as appropriate.

[0094] The first waterproof wall 46 may extend to a part of the connector-side holding portion 51 . The connector-side top plate 52 does not have to have the connector mounting wall 54. In this case, the control unit-side connector 65 is held by the connector-side top plate 52.

[0095] A wall may be provided extending from the third edge 52c of the connector-side top plate 52 toward the upper wall 22. However, this wall has a small vertical dimension so that the connector-side holding portion 51 can be opened on the side opposite the connector mounting wall 54 in the second direction Y.

[0096] The connector mounting wall 54 may extend from the third edge 52c of the connector-side top plate 52. In this case, the fourth edge 52d of the connector-side top plate 52 is open. Although the fuel cell system 10 is mounted on the forklift 100, it may be mounted on other industrial vehicles.

[0097] The mounting position of the fuel cell system 10 on the forklift 100 may be changed as appropriate. In this case, the waterproof wall that prevents water from entering will be at least one of the first waterproof wall 46 and the second waterproof wall 47, depending on the point where water falls onto the upper wall 22 and the mounting position of the bracket 31. [Explanation of symbols]

[0098] X...first direction, Y...second direction, 10...fuel cell system, 11...fuel cell stack, 21...housing, 22...top wall, 31...bracket, 41...auto power off switch as electrical component, 41a...switch main body as main body, 41b...wiring, 41c...switch side connector as electrical component side connector, 42...main body side holding portion, 43...main body side top plate, 44...holding wall, 46...first waterproof wall, 47...second waterproof wall, 49...cable support wall, 51...connector side holding portion, 52...connector side top plate, 53...connection wall, 53c...protrusion, 54...connector mounting wall, 63...control unit as other component, 64...control wiring as wiring for other components, 65...control unit side connector as other component side connector, 100...forklift as industrial vehicle, 110...vehicle body, 431...narrow width portion, 521...bent portion.

Claims

1. A fuel cell system housed inside the vehicle body, The fuel cell system includes: a housing that houses a fuel cell stack; a bracket attached to the top wall of the housing; an electrical component attached to the housing by the bracket; the electrical component has a main body held by the bracket and an electrical component-side connector connected to the main body via wiring, and the electrical component-side connector is connected to an other component-side connector that is electrically connected to another component different from the electrical component via other component wiring, in an industrial vehicle, the bracket has a main body side holding portion that holds the main body and a connector side holding portion that holds the other component side connector, the main body side holding portion and the other component side holding portion are aligned in a first direction, The main body side holding portion includes a main body side top plate that covers the main body and the wiring from above; a holding wall extending from an edge of the main body top plate opposite to the connector side holding portion toward the upper wall in the first direction to hold the main body; a waterproof wall extending from both end edges of the main body top plate in a second direction perpendicular to the first direction toward the upper wall to cover the main body and the wiring; the connector-side holding portion has a connector-side top plate that covers the other-component-side connector and the electrical-component-side connector from above, The industrial vehicle is characterized in that the connector-side holding portion is open on at least one side of the connector-side top plate in a second direction perpendicular to the first direction.

2. 2. The industrial vehicle described in claim 1, wherein the connector side holding portion extends from one end edge of the connector side top plate in the second direction toward the upper wall and has a connector mounting wall for mounting the other component side connector, and the connector side holding portion has an open other end side in the second direction.

3. 3. The industrial vehicle according to claim 1, wherein the main body side top plate has a narrow portion that continues to the connector side holding portion in the first direction, and the narrow portion becomes narrower in width as it moves from the holding wall side to the connector side holding portion side in the first direction.

4. 3. The industrial vehicle according to claim 1, wherein the connector-side top plate is located higher than the main body-side top plate.

5. The industrial vehicle according to claim 4, wherein the connector-side top plate has a bent portion bent upward at one end opposite the main body-side top plate from both end portions in the first direction.

6. 5. The industrial vehicle of claim 4, wherein a connecting wall is interposed between the connector side top plate and the main body side top plate, the connector side top plate is connected to the connecting wall, and the main body side top plate is connected to the connecting wall, and the connecting wall has a protrusion that protrudes downward below the underside of the main body side top plate at a position located below the point where the main body side top plate is connected.

7. 3. The industrial vehicle according to claim 1, wherein the main body side holding portion has a cable support wall extending above the main body side top plate.

Images