Industrial vehicles

Abstract

To inhibit deterioration of cooling performance caused by foreign objects entering the interior of a duct through an intake port and further entering a heat sink and a fan.SOLUTION: A towing vehicle 10 includes: a vehicle body 11; a duct 30 which is provided at the vehicle body 11 and in which air flows; an intake port for allowing air to flow from the outside of the duct 30 into the duct 30; an exhaust port 42 for exhausting air from the inside of the duct 30 to the outside of the duct 30; a fan 35 which generates airflow in the duct 30 by driving; and a heat sink 34 which uses air flowing through the duct 30 to cool a motor driver 23. Further, a battery is used as a driving source. The vehicle body 11 includes a tire house cover forming a tire house which is provided above a rear wheel 19 and houses the rear wheel 19. The intake port is positioned above the tire house cover.SELECTED DRAWING: Figure 3

Description

Technical Field

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

Background Art

[0002] Patent Document 1 describes a towing vehicle as an example of an industrial vehicle. The towing vehicle described in Patent Document 1 uses a battery as a power source. The wheels of the towing vehicle are housed in tire houses.

[0003] As industrial vehicles, those provided with a mechanism for cooling an object to be cooled mounted on the industrial vehicle are known. Such a mechanism includes, for example, a duct through which air flows, an intake port for introducing air from the outside of the duct into the inside of the duct, an exhaust port for discharging air from the inside of the duct to the outside of the duct, a fan, and a heat sink. Driving the fan generates an air flow inside the duct. The heat sink cools the object to be cooled using the air flowing through the inside of the duct.

Prior Art Literature

Patent Literature

[0004]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0005] When an industrial vehicle travels, rotation of the wheels may cause foreign matter to be thrown up from the road surface toward an area above the wheels. If such foreign matter enters the inside of the duct through the intake port, the entry of the foreign matter into the heat sink or the fan may cause a reduction in cooling performance.

Means for Solving the Problem

[0006] An industrial vehicle that solves the above problems comprises a vehicle body, a duct provided on the vehicle body through which air flows, an air intake port for bringing air into the duct from the outside, an exhaust port for discharging air from the inside of the duct to the outside, a fan that generates airflow inside the duct by driving, and a heat sink that cools an object to be cooled using the air flowing inside the duct, and is powered by a battery, wherein the vehicle body comprises a wheel well cover provided above the wheels and constituting a wheel well that houses the wheels, and the air intake port is located on the upper part of the wheel well cover.

[0007] With the above configuration, even if foreign objects are kicked up from the road surface towards the top of the wheels by the rotation of the wheels while the industrial vehicle is in motion, the objects will collide with the wheel well cover, making it difficult for them to enter the duct through the air intake located above the wheel well cover. Therefore, the reduction in cooling performance caused by foreign objects entering the duct through the air intake and then entering the heat sink or fan can be suppressed.

[0008] In an industrial vehicle, the industrial vehicle comprises a contactor and a contactor cover provided on the vehicle body and housing the contactor inside, wherein the inside of the contactor cover communicates with the inside of the duct, and the air intake port may be formed in the contactor cover.

[0009] According to the above configuration, the contactor cover can be used as the location for forming the air intake, and the inside of the contactor cover can be used as an air passage connecting the air intake and the duct. Therefore, compared to the case where the air intake and the above-mentioned passage are provided separately on the vehicle body, the size of the industrial vehicle can be suppressed.

[0010] In an industrial vehicle, the contactor cover may have an opening that connects the inside and outside of the contactor cover, and the duct may be provided so as to surround the opening and to be provided on the vehicle body so as to communicate with the inside of the contactor cover through the opening, and may include an intervening member that is interposed between the contactor cover and the duct and deforms to shrink when pressed.

[0011] With the above configuration, even if the gap between the contactor cover and the duct becomes smaller due to individual differences in the contactor cover and the duct, the intervening member deforms to shrink in accordance with the size of that gap. Therefore, the gap between the contactor cover and the duct can be effectively sealed.

[0012] In industrial vehicles, the exhaust port may be adjacent to the housing that constitutes the vehicle body and may also open toward the lower part of the vehicle body. According to the above configuration, if the exhaust port were to open toward the housing, it would be conceivable to create a hole in the housing opposite the exhaust port to avoid obstructing the discharge of air from the exhaust port. However, with the above configuration, the formation of such a hole is unnecessary. Therefore, by omitting the formation of a hole in the housing, the reduction in the strength of the vehicle body that would occur due to the formation of such a hole can be suppressed.

[0013] In an industrial vehicle, the vehicle body is provided with a housing that opens upward and partitions an internal storage space, the battery and the air intake are provided in the storage space, and the housing may be closed from above by a battery hood.

[0014] With the above configuration, the air intake is located below the battery hood, so it is closer to the wheels than if it were located above the battery hood. Even in this case, the position of the air intake above the wheel well cover helps to prevent foreign objects from entering the duct from the air intake.

[0015] In an industrial vehicle, the industrial vehicle may comprise a motor that drives the wheels and a motor driver that drives the motor, and the object to be cooled may be the motor driver. [[Effects of the Invention]]

[0016] According to the present invention, it is possible to suppress a decrease in cooling performance caused by foreign matter that has entered the inside of a duct from an intake port entering a heat sink or a fan. [[Brief Description of Drawings]]

[0017] [Figure 1] It is a schematic diagram showing a towing vehicle. [Figure 2] It is an enlarged perspective view showing a part of the towing vehicle. [Figure 3] It is an enlarged cross-sectional view showing a part of the towing vehicle. [[Mode for Carrying Out the Invention]]

[0018] Hereinafter, an embodiment in which an industrial vehicle is embodied as a towing vehicle will be described with reference to the drawings. <Overview of Towing Vehicle> As shown in FIG. 1, a towing vehicle 10 as an industrial vehicle includes a vehicle body 11. The towing vehicle 10 includes, at a rear portion of the vehicle body 11, a connecting portion 11a that is connected to an object to be towed such as a truck. The towing vehicle 10 tows the object to be towed connected to the connecting portion 11a. The object to be towed is, for example, a truck capable of carrying a conveyed article. In the following description, the front-rear, left-right, and up-down directions of the vehicle body 11 are also simply referred to as front-rear, left-right, and up-down. The left-right direction is also referred to as the vehicle width direction.

[0019] The towing vehicle 10 includes a driver's seat 12 and a battery housing 13. The battery housing 13 functions as a housing that constitutes the vehicle body 11. Specifically, the battery housing 13 constitutes a rear portion of the vehicle body 11. The battery housing 13 is provided at a lower portion of the driver's seat 12 and at a position rearward of the driver's seat 12.

[0020] The battery housing 13 opens upward and defines an accommodation space S therein. The accommodation space S is defined by providing the battery housing 13 on the front, rear, left, and right sides of the accommodation space S. The battery housing 13 is closed from above by a battery hood 14. An operator can displace the battery hood 14 to open and close the upward opening of the battery housing 13. The battery 15 is provided in the accommodation space S. Accordingly, the battery 15 is accommodated inside the battery housing 13.

[0021] A vehicle body 11 includes a first tire house 16 serving as a tire house, and a second tire house 17 serving as a tire house. Each of the first tire house 16 and the second tire house 17 is provided on both sides of the vehicle body 11 in the vehicle width direction. The first tire house 16 is located at a front lower portion of the vehicle body 11. The second tire house 17 is located at a rear lower portion of the vehicle body 11. The first tire house 16 accommodates a front wheel 18 serving as a wheel. The second tire house 17 accommodates a rear wheel 19 serving as a wheel.

[0022] As shown in FIG. 2, the vehicle body 11 includes a tire house cover 21. The tire house cover 21 is provided above the rear wheel 19 serving as a wheel. The tire house cover 21 has a plate shape extending above the rear wheel 19 at a position away from the rear wheel 19. The tire house cover 21 constitutes the second tire house 17 serving as a tire house that accommodates the rear wheel 19. The accommodation space S is located above the tire house cover 21.

[0023] Although not shown in the drawings, in addition to being provided above the rear wheel 19, the tire house cover 21 is also provided above the front wheel 18 serving as a wheel. The tire house cover 21 provided above the front wheel 18 constitutes the first tire house 16 serving as a tire house that accommodates the front wheel 18.

[0024] As shown in Figure 1, the towing vehicle 10 is equipped with a motor 22. The motor 22 is powered by a battery 15. This allows the motor 22 to drive the rear wheels 19, which act as wheels. In this embodiment, the towing vehicle 10 uses the battery 15 as its power source. The rear wheels 19 function as drive wheels. The power from the battery 15 is supplied to the motor 22 and other power-requiring components such as the contactor 24, motor driver 23, and fan 35, which will be described later.

[0025] As shown in Figure 3, the towing vehicle 10 is equipped with a motor driver 23 that drives the motor 22. The motor driver 23 is a device for controlling the drive related to the rotation of the motor 22. The motor driver 23 is installed in the housing space S.

[0026] <Contactor and contactor cover> The towing vehicle 10 is equipped with a contactor 24. The contactor 24 opens and closes an electrical circuit by connecting and disconnecting contacts using electromagnetic force, thereby starting and stopping electrical equipment (not shown). The contactor 24 is mounted on a single panel 25 together with the electrical equipment. The contactor 24 is located in the housing space S.

[0027] The towing vehicle 10 is equipped with a contactor cover 26. The contactor cover 26 is provided on the vehicle body 11 and houses the contactor 24 inside. More specifically, the contactor cover 26 houses a panel 25 containing the contactor 24 inside. The contactor cover 26 is provided in the housing space S.

[0028] The contactor cover 26 includes, for example, a rectangular cylindrical side wall portion 26a extending in the vertical direction, a top wall portion 26b that closes the opening at the top of the side wall portion 26a, and a bottom wall portion 26c that closes the opening at the bottom of the side wall portion 26a. The bottom wall portion 26c is attached to, for example, the vehicle body 11.

[0029] To prevent water, such as rainwater, from coming into contact with the panel 25, which includes the contactor 24, the panel 25 is housed inside the contactor cover 26. Since the contactor 24 and electrical equipment mounted on the panel 25 are energized, the panel 25 is positioned inside the contactor cover 26, away from the inner surface of the contactor cover 26. For this reason, a space larger than the space required for the panel 25 is partitioned inside the contactor cover 26.

[0030] The contactor cover 26 is provided with an opening 27. The opening 27 connects the inside and outside of the contactor cover 26. The opening 27 is, for example, a rectangular hole. In this embodiment, the opening 27 is a through hole that penetrates the bottom wall portion 26c. The opening 27 opens downward from the contactor cover 26. Figure 3 shows a cross-sectional view of the contactor cover 26 cut along the front-rear direction, so only the left portion of the opening 27 is shown.

[0031] <Duct> The towing vehicle 10 is equipped with a duct 30. The duct 30 is installed in the vehicle body 11 and air flows through its interior. The duct 30 is installed in the accommodation space S. In this embodiment, the duct 30 comprises a first duct section 31 and a second duct section 32.

[0032] The first duct section 31 is located below the contactor cover 26. The first duct section 31 has a rectangular tubular first duct side wall section 31a extending front to back, and a first duct closing wall section 31b that closes the front opening of the first duct side wall section 31a. The first duct side wall section 31a opens towards the rear. That is, the first duct side wall section 31a has a first opening end 31c that opens towards the rear.

[0033] The first duct section 31 has a first duct opening 31h that connects the inside and outside of the first duct section 31. The first duct opening 31h is, for example, a rectangular hole. The first duct opening 31h is a through hole that penetrates the first duct side wall section 31a. The first duct opening 31h is formed on the upper part of the first duct side wall section 31a. As a result, the first duct opening 31h opens upward from the first duct section 31. Figure 3 shows a cross-sectional view of the first duct section 31 cut along the front-rear direction, so only the left portion of the first duct section 31 and only the left portion of the first duct opening 31h are shown.

[0034] The first duct section 31 is provided such that the first duct opening 31h and the opening 27 of the contactor cover 26 are in vertical communication. As a result, the inside of the contactor cover 26 is in communication with the inside of the duct 30. The duct 30 is provided so as to surround the opening 27 and is provided on the vehicle body 11 so as to be in communication with the inside of the contactor cover 26 through the opening 27.

[0035] The second duct section 32 is located behind the first duct section 31. The second duct section 32 has a rectangular cylindrical second duct side wall section 32a that extends front to back, and a second duct closing wall section 32b that closes the rear opening of the second duct side wall section 32a. The second duct side wall section 32a opens forward. That is, the second duct side wall section 32a has a second opening end 32c that opens forward. Figure 3 shows a cross-sectional view of the second duct section 32 cut along the front-rear direction, so only the left portion of the second duct section 32 is shown.

[0036] A portion of the lower part of the second open end 32c is located inside the first duct section 31. The lower portion of the second open end 32c and the lower portion of the first open end 31c overlap each other in the vertical direction. A portion of the upper part of the second open end 32c is adjacent to the lower part of the side wall section 26a of the contactor cover 26 in the front-rear direction.

[0037] The second duct section 32 has a second duct opening 32h that connects the inside and outside of the second duct section 32. The second duct opening 32h is, for example, a circular hole. The second duct opening 32h is a through hole that penetrates the second duct side wall section 32a. The second duct opening 32h is formed at the lower part of the second duct side wall section 32a. As a result, the second duct opening 32h opens downward from the second duct section 32. The second duct opening 32h is located at a position on the second duct side wall section 32a that is rearward from the second opening end 32c.

[0038] The motor driver 23 is located above the second duct section 32. The motor driver 23 is positioned so as to be in contact with the upper surface of the second duct side wall section 32a. <Intervening member> The towing vehicle 10 is equipped with an intervening member 33 that deforms to shrink when pressed. The intervening member 33 is, for example, a porous material such as a sponge or a foamed material. In this embodiment, the intervening member 33 includes a first intervening member 33a, a second intervening member 33b, and a third intervening member 33c.

[0039] The first intervening member 33a, as the intervening member 33, is interposed between the contactor cover 26 and the duct 30. More specifically, the first intervening member 33a is interposed around the opening 27 in the bottom wall portion 26c of the contactor cover 26 and around the first duct opening 31h in the first duct side wall portion 31a. The first intervening member 33a is a rectangular tube that extends around the opening 27 and the first duct opening 31h.

[0040] The second intervening member 33b is interposed between the second duct section 32 and the first duct section 31. More specifically, the second intervening member 33b is interposed between a portion below the second open end 32c of the second duct section 32 and a portion below the first open end 31c of the first duct section 31.

[0041] The third intervening member 33c is interposed between the second duct portion 32 and the contactor cover 26. More specifically, the third intervening member 33c is interposed between a portion above the second opening end 32c of the second duct portion 32 and the lower part of the side wall portion 26a of the contactor cover 26.

[0042] When the contactor cover 26 and the first duct section 31 are placed on the vehicle body 11, the first intervening member 33a is interposed between the contactor cover 26 and the first duct section 31. When the first duct section 31 and the second duct section 32 are placed on the vehicle body 11, the second intervening member 33b is interposed between the first duct section 31 and the second duct section 32. When the contactor cover 26 and the second duct section 32 are placed on the vehicle body 11, the third intervening member 33c is interposed between the contactor cover 26 and the second duct section 32.

[0043] Individual differences may occur in the contactor cover 26, the first duct section 31, and the second duct section 32. Even if the gap between the contactor cover 26 and the first duct section 31 becomes smaller due to the above-mentioned individual differences, the first intervening member 33a will deform to shrink in accordance with the size of that gap. As a result, the gap between the contactor cover 26 and the first duct section 31 will be suitably sealed by the first intervening member 33a. Even if the gap between the first duct section 31 and the second duct section 32 becomes smaller due to the above-mentioned individual differences, the second intervening member 33b will deform to shrink in accordance with the size of that gap. As a result, the gap between the first duct section 31 and the second duct section 32 will be suitably sealed by the second intervening member 33b. Even if the gap between the contactor cover 26 and the second duct section 32 becomes smaller due to the above-mentioned individual differences, the third intervening member 33c will deform to shrink in accordance with the size of that gap. As a result, the gap between the contactor cover 26 and the second duct portion 32 is effectively sealed by the third intervening member 33c.

[0044] <Heat sink> The towing vehicle 10 is equipped with a heat sink 34. In this embodiment, the heat sink 34 is provided inside the second duct section 32. The heat sink 34 has, for example, a plurality of partition walls 34a and an outer peripheral section 34b. Each of the plurality of partition walls 34a is spaced apart from each other in the vehicle width direction. The partition walls 34a are rectangular flat plates that extend perpendicular to the vehicle width direction. The outer peripheral section 34b is rectangular cylindrical that extends in the front-rear direction. The plurality of partition walls 34a are provided inside the outer peripheral section 34b. Inside the outer peripheral section 34b, a flow path extending in the front-rear direction is formed between the plurality of partition walls 34a.

[0045] In the heat sink 34, the object to be cooled is cooled by the air flowing through the above-mentioned passage. Air flowing from the first duct section 31 to the second duct section 32 flows into the above-mentioned passage from the front opening end of the outer peripheral section 34b. By flowing through the above-mentioned passage from front to back, the air flows inside the second duct section 32. The air that has flowed through the above-mentioned passage flows into the inside of the second duct section 32 from the rear opening end of the outer peripheral section 34b. In this way, the heat sink 34 cools the object to be cooled using the air flowing inside the duct 30.

[0046] The heatsink 34 is positioned below the motor driver 23. The heatsink 34 and the motor driver 23 are stacked vertically on top of each other via the second duct side wall 32a of the second duct section 32. When air flows through the inside of the heatsink 34, the motor driver 23 is cooled by heat exchange between this air and the motor driver 23 via the second duct section 32 and the heatsink 34. Therefore, the object to be cooled in this embodiment is the motor driver 23.

[0047] <Fan> The towing vehicle 10 is equipped with a fan 35. The fan 35 has a blade section 35a and a housing section 35b that houses the blade section 35a. The blade section 35a rotates when driven by a drive motor (not shown). The fan 35 is located below the second duct section 32. The housing section 35b is cylindrical and extends vertically. The upper open end of the housing section 35b is connected to the second duct opening 32h of the second duct section 32. Because the housing section 35b extends downward from the second duct opening 32h, the lower open end of the housing section 35b is located below and away from the second duct section 32.

[0048] The rotation of the blades 35a of the fan 35 generates an airflow from the first duct section 31 to the second duct section 32. In this way, the fan 35 drives the airflow inside the duct 30. The fan 35 in this embodiment is a pull-type fan.

[0049] The air that has flowed through the second duct section 32 flows from the second duct section 32 into the interior of the housing section 35b. The air flows through the interior of the housing section 35b from top to bottom. Air flows out of the housing section 35b from the lower open end. In this embodiment, the lower open end of the housing section 35b functions as an exhaust port 42. That is, the towing vehicle 10 is equipped with an exhaust port 42 for discharging air from the inside of the duct 30 to the outside of the duct 30.

[0050] The exhaust port 42 is adjacent to the battery housing 13, which is a housing that constitutes the vehicle body 11, and opens toward the lower part of the vehicle body 11. In this embodiment, the exhaust port 42 is provided in front of the battery housing 13 and is adjacent to the battery housing 13 in the front-rear direction.

[0051] <Air intake> As shown in Figure 2, the towing vehicle 10 is equipped with an air intake 41. The air intake 41 is located in the housing space S. The air intake 41 is formed in the contactor cover 26. In detail, the air intake 41 is a through-hole that penetrates a portion of the left side of the side wall portion 26a. As a result, the air intake 41 opens to the left from the inside of the contactor cover 26. The inside and outside of the contactor cover 26 are in communication through the air intake 41. Since the contactor cover 26 is located above the wheel well cover 21, the air intake 41 is located above the wheel well cover 21.

[0052] <Airflow> In Figures 2 and 3, the airflow is indicated by white arrows. As shown in Figures 2 and 3, the operation of the fan 35 creates an airflow inside the duct 30 from the intake port 41 to the exhaust port 42. This causes air to flow from the outside to the inside of the contactor cover 26 through the intake port 41. The air then flows from the inside of the contactor cover 26 into the first duct section 31 through the opening 27 and the first duct opening 31h. Thus, the intake port 41 is designed to allow air to flow from the outside of the duct 30 into the inside of the duct 30.

[0053] Air flows from the inside of the first duct section 31 into the inside of the second duct section 32. The air flowing inside the second duct section 32 flows inside the heat sink 34. Inside the second duct section 32, the air flows from the second open end 32c toward the second duct opening 32h. The air that has flowed inside the second duct section 32 is discharged from the exhaust port 42 via the second duct opening 32h and the inside of the housing section 35b.

[0054] [Effect of the Embodiment] The operation of the embodiment will now be described. When the towing vehicle 10 is in motion, there is a risk that foreign objects may be kicked up from the road surface towards the area above the rear wheels 19 by the rotation of the rear wheels 19. These foreign objects may be, for example, sand on the road surface. In this embodiment, the air intake 41 is located above the wheel well cover 21. Therefore, the foreign objects are less likely to enter the duct 30 from the air intake 41, which is located above the wheel well cover 21, by colliding with the wheel well cover 21.

[0055] [Effects of the Embodiment] The effects of this embodiment will be described. (1) The air intake 41 is located on the upper part of the tire house cover 21. Therefore, it is possible to suppress the reduction in cooling performance caused by foreign matter entering the inside of the duct 30 from the air intake 41 and entering the heat sink 34 or fan 35.

[0056] (2) The towing vehicle 10 includes a contactor 24 and a contactor cover 26 provided on the vehicle body 11 and housing the contactor 24 inside. The inside of the contactor cover 26 is in communication with the inside of the duct 30. The air intake port 41 is formed in the contactor cover 26. Therefore, the contactor cover 26 can be used as the location for forming the air intake port 41, and the inside of the contactor cover 26 can be used as an air passage connecting the air intake port 41 and the duct 30. Thus, the size of the towing vehicle 10 can be reduced compared to the case in which the air intake port 41 and the above-mentioned passage are provided separately on the vehicle body 11.

[0057] (3) The towing vehicle 10 is equipped with a first intervening member 33a which is interposed between the contactor cover 26 and the duct 30 and deforms to shrink when pressed. Therefore, even if the dimensions of the gap between the contactor cover 26 and the duct 30 become smaller due to individual differences in the contactor cover 26 and the duct 30, the first intervening member 33a deforms to shrink in accordance with the dimensions of the gap. Thus, the gap between the contactor cover 26 and the duct 30 can be suitably sealed.

[0058] (4) The exhaust port 42 is adjacent to the battery housing 13, which is a housing that constitutes the vehicle body 11, and opens toward the lower part of the vehicle body 11. If the exhaust port 42 were to open toward the battery housing 13, it would be conceivable to provide a hole in the part of the battery housing 13 that faces the exhaust port 42 in order to not obstruct the discharge of air from the exhaust port 42, but in this embodiment, the formation of such a hole is unnecessary. Therefore, by omitting the formation of a hole in the battery housing 13, the reduction in the strength of the vehicle body 11 that would occur due to the formation of such a hole can be suppressed.

[0059] (5) The vehicle body 11 is equipped with a battery housing 13 which is a housing that opens upward and has a compartment S inside. The battery 15 and the air intake 41 are located in the compartment S. The battery housing 13 is covered from above by a battery hood 14. As a result, the air intake 41 is located below the battery hood 14, so it is closer to the rear wheel 19 than if it were located above the battery hood 14. Even in this case, the air intake 41 is located above the tire house cover 21, which prevents foreign matter from entering the duct 30 from the air intake 41.

[0060] (6) If the size of the intake port 41 is reduced, the intrusion of foreign matter from the intake port 41 can be suppressed, but the amount of air flowing from the intake port 41 to the duct 30 may decrease. According to the above embodiment, even without reducing the size of the intake port 41, the intrusion of foreign matter from the intake port 41 into the duct 30 can be suppressed, and thus the decrease in cooling performance due to a decrease in the amount of air flowing from the intake port 41 to the duct 30 can be suppressed.

[0061] [Example of changes] The embodiment can be implemented with the following modifications. The embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0062] ○ The fan 35 may be of the push type. In this case, the fan 35 is installed, for example, in the upstream portion of the duct 30. ○ The object to be cooled is not limited to the motor driver 23. For example, the object to be cooled may be at least one of the motor 22, sensor, and controller. Also, the object to be cooled may be multiple components.

[0063] ○ The air intake port 41 may be provided in a location other than the containment space S. ○ The exhaust port 42 may open toward a direction other than downward. For example, the exhaust port 42 may open toward the housing that constitutes the vehicle body 11.

[0064] ○ The exhaust port 42 may be provided in a part of the towing vehicle 10 other than the fan 35. For example, the exhaust port 42 may be provided in the duct 30. ○ At least one of the first intervening member 33a, the second intervening member 33b, and the third intervening member 33c may be omitted from the towing vehicle 10. In this case, a different member may be provided in the gap where the omitted intervening member 33 was located, or the gap may be filled with adhesive.

[0065] ○ The duct 30 may be composed of one or more members in addition to the first duct section 31 and the second duct section 32. The duct 30 may also be composed of a single member as a whole.

[0066] ○ The opening 27 may be provided in a portion of the contactor cover 26 other than the bottom wall portion 26c. ○ The air intake port 41 may be provided in a part of the towing vehicle 10 other than the contactor cover 26. For example, the air intake port 41 may be provided in the duct 30.

[0067] ○ The air intake port 41 may open in a direction other than to the left. For example, the air intake port 41 may be provided on the right side in the vehicle width direction and open to the right. ○ The towing vehicle 10 may have its front wheels 18 as drive wheels.

[0068] ○ In the embodiments described, the invention is applied to a four-wheeled industrial vehicle having a front wheel 18 and a rear wheel 19 on the left and right sides in the vehicle width direction, respectively, but it is not limited to this. It may also be applied to a three-wheeled industrial vehicle in which one of the front wheel 18 or the rear wheel 19 is positioned as a single wheel in the center in the vehicle width direction, or to a four-wheeled industrial vehicle in which one of the front wheel 18 or the rear wheel 19 is positioned adjacent to another in the center in the vehicle width direction.

[0069] ○ The air intake port 41 may be located above the tire house cover 21 provided on the upper part of the front wheel 18. ○ Industrial vehicles may be vehicles other than the towing vehicle 10. [Explanation of symbols]

[0070] S...accommodation space, 10...tow vehicle as an industrial vehicle, 11...vehicle body, 13...battery housing as a housing, 14...battery hood, 15...battery, 16...first wheelhouse as a wheelhouse, 17...second wheelhouse as a wheelhouse, 18...front wheel as a wheel, 19...rear wheel as a wheel, 21...wheelhouse cover, 22...motor, 23...motor driver as something to be cooled, 24...contactor, 26...contactor cover, 27...opening, 30...duct, 33...intervening member, 34...heat sink, 35...fan, 41...intake port, 42...exhaust port.

Claims

1. The car body and, A duct provided on the vehicle body through which air flows, An air intake port for bringing air into the duct from the outside of the duct, An exhaust port for discharging air from the inside of the duct to the outside of the duct, A fan that generates airflow inside the duct by driving it, An industrial vehicle powered by a battery, comprising a heat sink that cools an object to be cooled using air flowing inside the duct, The industrial vehicle comprises a contactor, a contactor cover provided on the vehicle body and housing the contactor inside, a battery housing for housing the battery, and a wheel well cover provided above the wheel and constituting a wheel well for housing the wheel. The inside of the contactor cover is in communication with the inside of the duct. The air intake is located on the upper part of the wheel well cover and is formed in the contactor cover, characterized in that it is an industrial vehicle.

2. The contactor cover has an opening that connects the inside and outside of the contactor cover, The duct is provided so as to surround the opening and is provided on the vehicle body so as to communicate with the inside of the contactor cover through the opening. The industrial vehicle according to claim 1, further comprising an intervening member that is interposed between the contactor cover and the duct and deforms to shrink when pressed.

3. The industrial vehicle according to claim 1 or 2, wherein the exhaust port is adjacent to the battery housing that constitutes the vehicle body and opens toward the lower part of the vehicle body.

4. The battery housing has an opening at the top and a compartment formed inside, The battery and the air intake are provided in the housing space. The industrial vehicle according to claim 1 or claim 2, wherein the battery housing is covered from above by a battery hood.

5. The system comprises a motor for driving the wheels and a motor driver for driving the motor, The industrial vehicle according to claim 1 or 2, wherein the object to be cooled is a motor driver.

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