Work vehicle

By integrating the on-board charging power connector case with the battery cover and optimizing its placement, the assembly complexity and space utilization issues are addressed, enhancing maintenance accessibility and protection in work vehicles.

JP2025154228APending Publication Date: 2025-10-10TAKEUCHI MFG CO LTD
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Patent Information

Application Number
JP2024057111
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-29
Publication Date
2025-10-10

AI Technical Summary

Technical Problem

Existing work vehicles with on-board charging power connectors face challenges in assembly complexity due to internal fixation, space utilization, and inspection accessibility, particularly with the connector case occupying significant vehicle space and being covered by the battery cover during maintenance.

Method used

The on-board charging power connector case is integrated with the battery cover, fixed to the reinforcing plate, and positioned diagonally rearward, allowing external assembly and reducing space usage, with a waterproof treatment and connector cap holder to enhance accessibility and protection.

Benefits of technology

This configuration simplifies assembly, saves space, and ensures easy inspection and protection from environmental elements, reducing assembly steps and maintaining vehicle functionality.

✦ Generated by Eureka AI based on patent content.

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  • Figure 2025154228000001_ABST
    Figure 2025154228000001_ABST
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Abstract

To reduce the number of steps of assembling an in-vehicle charging power source connector, and achieve space saving in a peripheral area of an in-vehicle charging power source connector case.SOLUTION: A work vehicle 1 includes an in-vehicle charging power source connector 30, and an in-vehicle charging power source connector case 31 in which the in-vehicle charging power source connector 30 is mounted and in which a charging cable 70 is inserted. The in-vehicle charging power source connector case 31 is disposed on a right side end of a battery cover 27. With an in-vehicle charging power source connector case fixing part 33, the in-vehicle charging power source connector case 31 is fixed to a reinforcement plate 56 fixed to an inner rear surface 27d of the battery cover 27.SELECTED DRAWING: Figure 2
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Description

[Technical Field]

[0001] The present invention relates to a work vehicle. [Background technology]

[0002] Widely known work vehicles include crawler-type skid steer loaders and hydraulic excavators, which are used to excavate the ground and move excavated soil and sand. In recent years, work vehicles powered by electric motors have been put into practical use as an environmental measure. Such electric work vehicles have an on-board charging power connector that can be connected to a power supply cable on the power source side, and the on-board charging power connector is connected to a battery via the charging cable.

[0003] The on-board charging power connector is attached to the outer shell of the on-board charging power connector case. The on-board charging power connector is connected to a charging cable on the vehicle body inside the on-board charging power connector case. The on-board charging power connector case is fixed to the upper surface of the upper end protrusion of the counterweight at the rear of the vehicle body. The charging cable passes through the bottom plate of the on-board charging power connector case and the upper end protrusion of the counterweight and is connected to the battery (see, for example, Patent Document 1).

[0004] Furthermore, in the work vehicle described in Patent Document 1, when the battery cover is opened during inspection work, the on-board charging power connector is covered from the rear by the battery cover. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-47111 Summary of the Invention [Problem to be solved by the invention]

[0006] The on-board charging power connector case described in Patent Document 1 is fixed to a counterweight via a bottom plate on the inside of the side wall with fixing screws or the like. Because the top of the side wall is closed, assembly work must be performed within the space inside the on-board charging power connector case. This makes the assembly work cumbersome, and increases the number of assembly steps.

[0007] In addition, the connection between the power supply cable on the external power source and the charging cable on the vehicle body, i.e., the connection between the power supply connector and the on-board charging power connector, faces diagonally downward and extends to near the center of the vehicle width. This creates the problem of the on-board charging power connector case taking up a large amount of space in the height and width directions of the vehicle. Furthermore, during inspections, the on-board charging connector is covered by the open battery cover, making inspections with the battery cover open difficult.

[0008] Therefore, the present invention has been made to solve at least one of the above problems, and aims to provide a work vehicle that can reduce assembly labor and save space around the on-board charging power connector case of the battery cover. [Means for solving the problem]

[0009] [1] The work vehicle of the present invention includes an on-board charging power connector to which a charging cable is connected, the charging cable supplying power from an external power source to a battery disposed inside the vehicle body; a hollow on-board charging power connector case disposed at a rear end of the vehicle body and at a right or left end of the battery cover in the vehicle width direction, the hollow on-board charging power connector case through which the charging cable is inserted; and The in-vehicle charging power connector case has an in-vehicle charging power connector attachment portion that is positioned on the outer upper surface of the battery cover and to which the in-vehicle charging power connector can be attached, and an in-vehicle charging power connector case fixing portion that extends from the in-vehicle charging power connector attachment portion and passes through the battery cover, and the in-vehicle charging power connector case fixing portion is fixed to a reinforcing plate that is fixed to the inner back surface of the battery cover.

[0010] [2] In the work vehicle of the present invention, it is preferable that the on-board charging power connector case is attached to the battery cover with the power supply port of the on-board charging power connector facing diagonally rearward of the vehicle body in the vehicle width direction.

[0011] [3] In the work vehicle of the present invention, the reinforcing plate has a raised portion on the inner back surface of the battery cover. The raised portion is arranged along the on-board charging power connector case fixing portion. It is preferable that the on-board charging power connector case is fixed by welding between the on-board charging power connector case fixing portion and the raised portion.

[0012] [4] In the work vehicle of the present invention, it is preferable that the on-board charging power connector case and the on-board charging power connector are arranged inside the turning radius of the vehicle body.

[0013] [5] In the work vehicle of the present invention, it is preferable that the charging cable has a length that enables connection between the on-board charging power connector and a charging controller disposed between the on-board charging power connector and the battery when the battery cover is fully opened.

[0014] [6] In the work vehicle of the present invention, it is preferable that a waterproof treatment be applied to the gap between the battery cover and the on-board charging power connector case.

[0015] [7] In the work vehicle of the present invention, the waterproofing treatment is preferably caulking.

[0016] [8] In the work vehicle of the present invention, it is preferable that a connector cap holding member for holding a connector cap for sealing the power supply port of the on-board charging power connector is fixed to the top surface of the on-board charging power connector case. [Effects of the Invention]

[0017] The on-board charging power connector case is welded and fixed inside the battery cover in advance. The on-board charging power connector is attached to the hollow on-board charging power connector case. A charging cable connected to the on-board charging power connector is inserted into the on-board charging power connector case and connected to the battery via a charging controller. In the prior art described above, the on-board charging power connector is attached to the connector case after the connector case is attached to the counterweight by screwing inside the connector case, which makes assembly work cumbersome and increases the number of assembly steps. In contrast, in the present invention, the on-board charging power connector is assembled to an on-board charging power connector case that is integrated with the battery cover. This assembly work can be easily performed outside the on-board charging power connector case, making the assembly work easier and reducing the number of assembly steps.

[0018] The on-board charging power connector case is fixed to the outer upper surface of the battery cover at the right or left end in the vehicle width direction. This saves space on the upper surface of the battery cover. For example, if the on-board charging power connector mounting position on the battery cover is located at the right end, the empty space to the left of the on-board charging power connector mounting position on the battery cover can be effectively used.

[0019] As described above, the work vehicle of the present invention reduces the number of steps required to assemble the on-board charging power connector and makes it possible to save space around the on-board charging power connector case. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of an example of a work vehicle 1 as seen from the rear side. [Figure 2] 2 is a perspective view showing the configuration of a connector case 31 as seen from the rear of the vehicle body 10. FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along the line XX in FIG. 2. [Figure 4] 10 is a perspective view of the connector case 31 as seen from below the inside of the battery cover 27. FIG. [Figure 5] 1 is a perspective view of the battery cover 27 when fully opened, as viewed from the rear side of the vehicle body 10. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] A work vehicle 1 according to an embodiment of the present invention will now be described with reference to FIGS.

[0022] (Configuration of Work Vehicle 1) FIG. 1 is a perspective view of an example of a work vehicle 1, seen from the rear side. In each of the drawings described below, arrows indicate the direction of each part relative to the vehicle body 10. That is, the forward direction of the work vehicle 1 is referred to as the forward direction, the backward direction as the backward direction, the right side relative to the forward direction as the right side, the left side as the left side, the ground side as the down side, and the side above the ground side as the up side. The work vehicle 1 has, below both ends of the vehicle width direction (left-right direction) of the vehicle body 10, a traveling device 12 having a pair of crawlers 11, a hydraulically driven working device 13, a blade device 14, and the like. The vehicle body 10 is sometimes referred to as an upper rotating body. A counterweight 19 is arranged below the rear side of the vehicle body 10.

[0023] Located on top of the vehicle body 10 are a cab 15 where the operator operates the traveling device 12, the working device 13, and the blade device 14, and an operator seat 16 where the operator sits. The traveling device 12, the working device 13, and the blade device 14 can be explained in the same way as for well-known work vehicles, so explanations thereof will be omitted here.

[0024] Although not shown, the vehicle body 10 is provided with a machinery room 18 (see also FIG. 5) inside. Although not shown, the machinery room 18 houses an electric motor, a hydraulic pump that is driven by the electric motor to supply pressurized oil, a battery that supplies power to the electric motor and other equipment, and the like. The machinery room 18 is surrounded by a right side cover 25 and a left side cover 26 that are disposed on both the left and right sides of the vehicle body 10, and a battery cover 27. The battery cover 27 is composed of an upper plate portion 27a on the outer upper surface that extends below the operator seat 16, and a side plate portion 27b that covers the rear of the machinery room 18. The operator seat 16 is disposed on the upper plate portion 27a.

[0025] The battery cover 27 has a hinge (not shown) on the front side of the upper plate portion 27a, and can be opened and closed in the vertical direction around the hinge as a rotation axis (see FIG. 5). The position of the operator seat 16 changes as the battery cover 27 is opened and closed.

[0026] A canopy pole 28 is erected on the right side cover 25 and the left side cover 26 at the rear of the vehicle body 10. The right and left pillars of the canopy pole 28 are referred to as the right canopy pole 28a and the left canopy pole 28b, respectively. An on-vehicle charging power connector case 31, to which the on-vehicle charging power connector 30 is attached, is fixed to the right rear end of the upper plate portion 27a of the battery cover 27. In other words, the on-vehicle charging power connector 30 is disposed adjacent to the right canopy pole 28a. By arranging the on-vehicle charging power connector 30 and the on-vehicle charging power connector case 31 in this manner, an empty space is created to the left of the on-vehicle charging power connector 30. The configuration of the on-vehicle charging power connector 30 will be described with reference to FIGS. 2 to 4. In the following description, the on-vehicle charging power connector case 31 may also be referred to as the connector case 31.

[0027] (Configuration of connector case 31) FIG. 2 is a perspective view showing the configuration of the connector case 31 as seen from the rear of the vehicle body 10. FIG. 2 also shows the on-board charging power connector attachment portion 32 of the connector case 31 exposed to the outside of the battery cover 27. The connector case 31 is disposed at the right end of the upper plate portion 27a on the outer upper surface of the battery cover 27. The battery cover 27 is an integrated structure in which the connection portion between the upper plate portion 27a and the side plate portion 27b covering the rear side of the vehicle body 10 is connected by an arc. Furthermore, the right end of the upper plate portion 27a has an inclined surface 27c that slopes gently downward. The connector case 31 is disposed on this inclined surface 27c. The connector case 31 is composed of an on-board charging power connector attachment portion 32 on the upper side of the upper plate portion 27a and an on-board charging power connector case fixing portion 33 (see FIGS. 3 and 4) that extends from the on-board charging power connector attachment portion 32 through the upper plate portion 27a.

[0028] In the following description, the on-board charging power connector attachment portion 32 may be referred to as the connector attachment portion 32, and the on-board charging power connector case fixing portion 33 may be referred to as the connector case fixing portion 33. The connector case fixing portion 33 is inserted into a through-hole 34 provided in the inclined surface 27c, and is fixed by welding to the lower inside of the battery cover 27. The fixing structure of the battery cover 27 and the connector case 31 will be described with reference to Figures 3 and 4.

[0029] The connector mounting portion 32 has a rectangular upper plate portion 31a, which forms the top surface when viewed from above. Specifically, the shape of the upper plate portion 31a is rectangular, with a rear side B being shorter than a front side A. The connector case 31 is hollow and accommodates the charging cable 70 and the connection portion (see FIG. 3 ) between the on-board charging power connector 30 and the charging cable 70. The left side surface of the connector mounting portion 32 is the on-board charging power connector mounting plate portion 35 to which the on-board charging power connector 30 is attached. In the following description, the on-board charging power connector mounting plate portion 35 may be referred to as the connector mounting plate portion 35.

[0030] The on-board charging power connector 30 has a tail portion 40b (see FIG. 3) of the housing 40 inserted into a through-hole 35a (see FIG. 3) provided in the connector mounting plate 35, and is fixed to the connector mounting plate 35 via the fixing plate 40a with four bolts 41. A connector cap holding member 43 for holding a connector cap 42 (see FIG. 3) is welded to the top plate 31a of the connector case 31. The connector cap holding members 43 are arranged in pairs at positions near sides A and B of the top plate 31a. The connector cap holding members 43 have claws 43a facing each other. The claws 43a are configured to be able to engage with the flange portion 42b (see FIG. 3) of the connector cap 42. The connector cap holding member 43 is provided to hold the connector cap 42 during, for example, battery charging.

[0031] The connector mounting plate portion 35 faces diagonally rearward on the left side of the vehicle body 10. That is, the power inlet 45 of the on-board charging power connector 30 is attached to the connector case 31 so that it faces diagonally rearward and to the left of the vehicle body 10. However, the connector case 31 and the on-board charging power connector 30 (the tip of the power inlet 45) are disposed inside the turning radius of the vehicle body 10. The connector case 31 has a rectangular shape in a plan view, with the rear side B being shorter than the front side A. The connector case 31 is disposed at the right end of the battery cover 27 and therefore adjacent to the right canopy pole 28a erected on the right side cover 25. Therefore, by shortening the side B closer to the right canopy pole 28a, the connector case 31 can be disposed as close to the right end of the battery cover 27 as possible within the manufacturing limits. Next, the structure for mounting the on-board charging power connector 30 to the connector case 31 and the structure for fixing the connector case 31 to the battery cover 27 will be described with reference to FIGS.

[0032] (Mounting structure of on-board charging power connector 30 and connector case 31) 3 is a cross-sectional view taken along line XX in FIG. 2. The connector case 31 is welded to the reinforcing plate 56 and the inner back surface 27d of the battery cover 27 by inserting the connector case fixing portion 33 into a through-hole 34 provided in the battery cover 27. The connector mounting portion 32 has its lower end 32a abutting against the battery cover 27, thereby determining its vertical position relative to the battery cover 27. Reinforcing plates 55 and 56 are welded to the inner back surface 27d of the battery cover 27. The connector case 31 is welded to the rising portion 56a of the reinforcing plate 56. The welding and fixing of the connector case 31 will be described with reference to FIG. 4. The gap between the battery cover 27 and the connector case fixing portion 33 is covered with caulking 60 as a waterproofing treatment around the entire periphery.

[0033] An on-board charging power connector 30 is attached to the connector mounting plate 35. The on-board charging power connector 30 is connected to a terminal portion 46 housed inside the housing 40. After the power supply connector (not shown) is connected to the on-board charging power connector 30, it is fixed in place by a power supply connector cap 47. The power supply connector fixing cap 47 has a configuration that allows the power supply connector to be fixed with a well-known bayonet lock. The housing 40 has connector terminals 57 inside that protrude toward the power supply port 45. The connector terminals 57 consist of three terminals, and a well-known one can be used for the on-board charging power connector 30 shown in FIG. 3 , so a detailed description thereof will be omitted.

[0034] The on-board charging power connector 30 has a ring-shaped gasket 48 interposed between the fixing plate portion 40a of the housing 40 and the connector mounting plate portion 35, and the tail portion 40b of the housing 40 is inserted into the through-hole 35a of the connector mounting plate portion 35. The on-board charging power connector 30 is fixed to the connector mounting portion 32 by inserting a bolt 41 from the power feed port 45 side through the fixing plate portion 40a, the gasket 48, and the connector mounting plate portion 35 in that order and screwing it into a nut 49 welded to the connector mounting plate portion 35.

[0035] The on-board charging power connector 30 has a connector cap 42 that can seal the power supply port 45. The connector cap 42 has a structure that allows it to be attached to and detached from the housing 40 by a bayonet lock. The connector cap 42 has a wire locking portion 42a at its top, and a wire 61 is locked to the wire locking portion 42a. Although not shown, the tip of the wire 61 is fixed to a fixing portion (not shown) provided on a vertical plane (see FIG. 2) that includes the side A of the connector case 31. The connector cap 42 has a flange portion 42b that protrudes from its outer periphery, and the flange portion 42b (see FIG. 3) can be sandwiched and held between the claw portions 43a of a pair of connector cap holding members 43.

[0036] The charging cable 70 is connected to the charging cable connection portion 44 at the charging cable connection portion 44. The charging cable 70 extends downward from the position where it is connected to the on-board charging power connector 30 through the space 31b, which is the hollow portion of the connector case 31, and is then connected to a battery (not shown). The extension direction of the charging cable 70 changes downward from the point where it is connected to the on-board charging power connector 30. As shown in FIG. 2, the space 31b on the side A of the connector case 31 is formed wider than the space 31b on the side B, so that the extension direction of the charging cable 70 can be changed with ease.

[0037] Furthermore, the connector case fixing portion 33 has an opening 33a at its lower end, which serves as an insertion portion for the charging cable 70. The height of this opening 33a from the inner rear surface 27d of the battery cover 27 is lower on the left side than on the right side. This makes it easy to change the extension direction of the charging cable 70 in the vicinity of the opening 33a in the work vehicle 1. Next, the fixation of the battery cover 27 and the connector case 31 will be described with reference to Figures 3 and 4.

[0038] 4 is a perspective view of the connector case 31 viewed from below the inside of the battery cover 27. Reinforcing plates 55 and 56 are provided on the inner back surface 27d of the battery cover 27. The reinforcing plates 55 and 56 are welded and fixed to the inner back surface 27d of the battery cover 27 on both the left and right sides of the connector case fixing portion 33. The reinforcing plates 55 and 56 function to reinforce the periphery of the attachment portion of the battery cover 27 to the connector case 31. The reinforcing plates 55 and 56 have rising portions 55a and 56a extending downward from the inner back surface 27d. The rising portions 56a are arranged along the connector case fixing portion 33.

[0039] The connector case 31 is fixed by welding between the connector case fixing portion 33 and the rising portion 56a. In this way, the connector case 31 is fixed to the battery cover 27 via the reinforcing plate 56.

[0040] FIG. 5 is a perspective view of the battery cover 27 when fully open, as viewed from the rear side of the vehicle body 10. FIG. 5 shows only the upper side of the vehicle body 10. When the battery cover 27 is fully opened for maintenance or the like, the on-board charging power connector 30 is in a position corresponding to the top of the battery cover 27. FIG. 5 shows the power inlet 45 (see FIG. 2) of the on-board charging power connector 30 sealed with the connector cap 42. When the battery cover 27 is fully opened, the maintenance cover 80 appears. A service plug 81, a quick-charge inlet 82, and a maintenance connector 83 are arranged in the maintenance cover 80.

[0041] The service plug 81 is provided so that it can be unplugged to cut off the power supply from the battery when performing maintenance on electrical components. The quick-charge port 82 is a connector that connects to an external power source to enable quick charging. The maintenance connector 83 has the function of sending and receiving various data when performing maintenance on the battery pack (not shown). The service plug 81 and quick-charge port 82 are connected to the battery. The maintenance connector 83 is also connected to various electrical circuits (not shown) housed in the machine compartment 18. The maintenance cover 80 has a hinge 85 at its left end so that it can be opened and closed. The back side of the maintenance cover 80 on the paper surface is the machine compartment 18, and by opening the battery cover 27 and the maintenance cover 80, the interior of the battery pack (not shown) can be seen.

[0042] The charging cable 70 has a length that allows it to connect the on-board charging power connector 30 and a charging controller (not shown) when the battery cover 27 is fully open. Although not shown, the charging cable 70 is connected to the battery (not shown) via a charging controller. The charging controller controls the power from the power source to an appropriate voltage and current for charging the battery. The machinery compartment 18 has space that can accommodate the charging cable 70 when the battery cover 27 is closed. Furthermore, even when the battery cover 27 is fully open, it is possible to charge the battery by removing the connector cap 42 from the on-board charging power connector 30 and connecting a power supply connector (not shown).

[0043] The connector case 31 is welded and fixed inside the battery cover 27 in advance. The on-board charging power connector 30 is attached to the hollow connector case 31. The charging cable 70 connected to the on-board charging power connector 30 is inserted into the connector case 31 and connected to the battery. In the prior art described above, the on-board charging power connector is attached to the connector case after the connector case is attached to the counterweight by screwing inside the connector case. In contrast, in this embodiment, the on-board charging power connector 30 is assembled to the connector case 31 that is integrated with the battery cover 27. This assembly can be easily performed outside the connector case 31, making the assembly process easier and reducing the number of assembly steps.

[0044] The connector case 31 is fixed to one end (the right end in this example) in the vehicle width direction of the upper plate portion 27a, which forms the outer upper surface of the battery cover 27. This saves space above the upper plate portion 27a of the battery cover 27, and makes it possible to effectively use the empty space on the other side (the left side in this example) of the battery cover 27 from the mounting position of the on-board charging power connector. The connector case 31 can also be placed at the left end of the battery cover 27.

[0045] The work vehicle 1 can of course be driven by a battery as a drive power source, but can also be driven by an external power source by connecting an external power source, a power supply cable (not shown), and a charging cable 70.

[0046] Additionally, the connector case 31 is attached to the battery cover 27 on the left side of the vehicle body 10, with the power supply port 45 of the on-board charging power connector 30 facing diagonally rearward of the vehicle body 10. With this configuration, connection to the power supply connector (not shown) can be performed in the wide space at the rear of the vehicle body 10.

[0047] The connector case 31 is fixed by welding between the connector case fixing portion 33 and the raised portion 56a of the reinforcing plate 56. Because the connector case 31 is integrated with the battery cover 27, it is possible to easily attach the on-board charging power connector 30. Furthermore, because the connector case 31 and the battery cover 27 are fixed inside the battery cover 27, an excellent appearance can be achieved.

[0048] Furthermore, the connector case 31 and the on-board charging power connector 30 are arranged inside the turning radius of the vehicle body 10. Therefore, when the vehicle body 10 turns, there is no risk of the connector case 31 and the on-board charging power connector 30 being damaged by obstacles such as earth and sand or buildings.

[0049] The connector case 31 is fixed to the openable / closable battery cover 27. The charging cable 70 has a length that allows connection between the on-board charging power connector 30 and a charging controller (not shown) when the battery cover 27 is fully open. Therefore, the battery cover 27 can be freely opened and closed.

[0050] The connector case 31 is composed of a connector mounting portion 32 disposed above the upper plate portion 27a of the battery cover 27, and a connector case fixing portion 33 extending from the connector mounting portion 32 and penetrating the battery cover 27. Caulking 60 is applied to the gap between the connector case 31 and the battery cover 27 as a waterproofing treatment, which makes it possible to prevent rainwater from entering the inside of the battery cover 27 through this gap. Note that the waterproofing treatment is not limited to the caulking 60. For example, a gasket could be used, but caulking 60 is more preferable when the connector case 31 is attached to the inclined surface 27c.

[0051] Furthermore, the upper surface plate portion 31a of the connector case 31 has a connector cap holding member 43 that holds the connector cap 42. This makes it possible to prevent the connector cap 42 from getting in the way during work or from catching the wire 61.

[0052] As described above, the work vehicle 1 according to this embodiment reduces the number of steps required to assemble the on-board charging power connector 30 and saves space around the connector case 31. It also makes it possible to prevent rainwater from entering through the gap between the battery cover 27 and the connector case 31. [Explanation of symbols]

[0053] 1...work vehicle, 10...vehicle body, 27...battery cover, 27d...inner back surface, 30...in-vehicle charging power connector, 31...in-vehicle charging power connector case (connector case), 32...in-vehicle charging power connector mounting portion (connector mounting portion), 33...in-vehicle charging power connector case fixing portion (connector case fixing portion), 42...connector cap, 43...connector cap holding member, 45...power supply port, 55, 56...reinforcing plate, 55a, 56a...rising portion, 60...caulking (waterproofing treatment), 70...charging cable

Claims

1. an on-board charging power connector to which a charging cable is connected, the charging cable supplying power from an external power source to a battery disposed inside the vehicle body; a hollow on-board charging power connector case disposed at a rear end of the vehicle body and at a right or left end of the battery cover in the vehicle width direction, the hollow on-board charging power connector case through which the charging cable is inserted; and the on-board charging power connector case has an on-board charging power connector attachment portion that is disposed on the outer upper surface of the battery cover and to which the on-board charging power connector can be attached, and an on-board charging power connector case fixing portion that extends from the on-board charging power connector attachment portion and penetrates the battery cover; The in-vehicle charging power connector case fixing portion is fixed to a reinforcing plate fixed to the inner rear surface of the battery cover. A work vehicle characterized by:

2. The work vehicle according to claim 1, the on-board charging power connector case is attached to the battery cover with the power supply port of the on-board charging power connector facing diagonally rearward of the vehicle body with respect to the vehicle width direction; A work vehicle characterized by:

3. The work vehicle according to claim 1, the reinforcing plate has a raised portion on the inner rear surface of the battery cover, the rising portion is disposed along the fixing portion of the on-board charging power connector case, the in-vehicle charging power connector case is fixed by welding between the in-vehicle charging power connector case fixing portion and the rising portion; A work vehicle characterized by:

4. 2. The work vehicle according to claim 1, the on-board charging power connector case and the on-board charging power connector are arranged inside the turning radius of the vehicle body; A work vehicle characterized by:

5. The work vehicle according to claim 1, the charging cable has a length that allows connection between the on-board charging power connector and a charging controller disposed between the on-board charging power connector and the battery when the battery cover is fully opened; A work vehicle characterized by:

6. The work vehicle according to claim 1, The gap between the battery cover and the on-board charging power connector case is waterproofed. A work vehicle characterized by:

7. The work vehicle according to claim 6, The waterproofing treatment is caulking. A work vehicle characterized by:

8. 2. The work vehicle according to claim 1, a connector cap holding member for holding a connector cap for sealing a power supply port of the on-board charging power connector is fixed to a top surface of the on-board charging power connector case; A work vehicle characterized by:

Citation Information

Patent Citations

  • Electric construction machine

    JP2022047111A