vehicle

Abstract

To provide a vehicle with an easily removable electromechanical unit. [Solution] The vehicle 100 has a ladder-shaped frame 11 consisting of a pair of side members 30, a first cross member 31A, and a second cross member 31B. The vehicle 100 is equipped with a mechatronics unit 20. The mechatronics unit 20 is disposed between the pair of side members 30 and below the first cross member 31A and the second cross member 31B. The distance between the first cross member 31A and the second cross member 31B in the vehicle length direction is shorter than the length of the mechatronics unit 20 in the vehicle length direction. The second cross member 31B has a first fastening portion 32. The side members 30 have a second fastening portion 60. The first fastening portion 32 and the second fastening portion 60 are fastened together by a fastening member 70.

Description

Technical Field

[0001] This invention relates to a vehicle.

Background Art

[0002] Patent Document 1 discloses a vehicle in which a motor is fixed to a ladder-shaped frame including a pair of side members and a plurality of cross members installed between the pair of side members.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a vehicle in which a motor is disposed on a ladder-shaped frame in which a plurality of cross members are installed between a pair of side members, and the interval between adjacent cross members is shorter than the length of the motor in the vehicle length direction, when removing the motor, the motor and the cross members interfere with each other. Therefore, it is difficult to remove the motor from the above vehicle.

Means for Solving the Problems

[0005] A vehicle for solving the above problem is a vehicle that drives the drive wheels with electricity stored in battery cells inside a battery pack. The above vehicle comprises a ladder-shaped frame in which a plurality of cross members extending in the vehicle width direction are installed between a pair of side members spaced apart in the vehicle width direction and extending in the vehicle length direction, and a mechatronic unit consisting of a motor which is a power source for driving the drive wheels and a power control device which supplies power to the motor. The plurality of cross members include a first cross member and a second cross member adjacent to the first cross member. The mechatronic unit is disposed between the pair of side members and below the first cross member and the second cross member. The distance between the first cross member and the second cross member in the vehicle length direction is shorter than the length of the mechatronic unit in the vehicle length direction. In the above vehicle, at least one of the first cross member and the second cross member is joined to the upper surface of the mechatronic unit in the vehicle height direction. Of the cross members joined to the upper surface of the electromechanical unit in the vehicle height direction, at least one has first fastening portions at both ends in the vehicle width direction. The pair of side members each have second fastening portions protruding inward in the vehicle width direction. The vehicle is fastened together by fastening members, with the first fastening portion and the second fastening portion connected. [Effects of the Invention]

[0006] In the above vehicle, the distance between the first cross member and the second cross member in the vehicle length direction is shorter than the vehicle length direction of the integrated electromechanical unit, but the integrated electromechanical unit is easy to remove. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram showing a vehicle according to one embodiment. [Figure 2] Figure 2 is a cross-sectional view along line 2-2 in Figure 1. [Figure 3] Figure 3 is a cross-sectional view along line 3-3 in Figure 1. [Figure 4]Figure 4 is a cross-sectional view of the first and second fastening parts of the modified example. [Figure 5] Figure 5 is a schematic diagram showing a vehicle with another modification example. [Figure 6] Figure 6 is a schematic diagram showing other modified vehicle examples. [Modes for carrying out the invention]

[0008] The following description of one embodiment of the vehicle will be explained with reference to Figures 1 to 3. In the following description, "front," "rear," "right," "left," "up," and "down" refer to the front, rear, right, left, up, and down as viewed from the perspective of a passenger facing forward in the vehicle. The left-right direction coincides with the vehicle width direction.

[0009] <Vehicle 100 composition> Figure 1 schematically shows the arrangement of equipment in a top view of a vehicle 100 according to one embodiment, viewed from above. As shown in Figure 1, the vehicle 100 is equipped with a ladder-shaped frame 11. The frame 11 includes a pair of side members 30 that are spaced apart in the vehicle width direction and extend in the vehicle length direction, and a plurality of cross members 31 that extend in the vehicle width direction. The dashed lines on the side members 30 indicate that they are located below the plurality of cross members 31. In other words, a plurality of cross members 31 are mounted on the two side members 30. This gives the frame 11 a ladder shape. The multiple cross members 31 include a first cross member 31A and a second cross member 31B that is adjacent to the first cross member 31A and positioned further rearward than the first cross member 31A.

[0010] Vehicle 100 is equipped with a mechatronics unit 20. The configuration of the mechatronics unit 20 will be described later. The mechatronics unit 20 is located between a pair of side members 30 and below the first cross member 31A and the second cross member 31B. The area of ​​the mechatronics unit 20 indicated by the dashed line is located below the second cross member 31B. The distance between the first cross member 31A and the second cross member 31B in the vehicle length direction is shorter than the length of the mechatronics unit 20 in the vehicle length direction.

[0011] Figure 2 shows a schematic cross-section of the vehicle 100 in Figure 1, along line 2-2 in Figure 1. As shown in Figure 2, in a side view of the vehicle, the first cross member 31A and the second cross member 31B are positioned above the upper surface 30US of the pair of side members 30. The second cross member 31B is joined to the upper surface 20US of the electromechanical unit 20 in the vehicle height direction.

[0012] The electromechanical unit 20 is a unit that integrates a motor 21 and a power control device 22. The power control device 22 is positioned so as to overlap the motor 21 above the vehicle. The vehicle 100 does not necessarily have to have the power control device 22 in the electromechanical unit 20 positioned so as to overlap the motor 21 above the vehicle. For example, the electromechanical unit 20 may have the power control device 22 positioned behind the motor 21.

[0013] The motor 21 is the power source that drives the drive wheels. The multiple battery cells 14 inside the battery pack 10 shown in Figure 1 store the power supplied to the motor 21. In Figure 1, the multiple battery cells 14 arranged inside the battery pack 10 are shown together enclosed by a dashed line. The vehicle 100 drives the drive wheels with the power stored in the multiple battery cells 14. The motor 21 drives the front wheels 41 via the drive shaft 51. That is, the front wheels 41 are the drive wheels. The dashed line on the drive shaft 51 is located below the side member 30 of the vehicle.

[0014] The power control device 22 shown in Fig. 2 is a device that supplies power to the motor 21. The power control device 22 includes an inverter that converts DC power from a plurality of battery cells 14 into AC power and supplies it to the motor 21. The mechatronic unit 20 may include devices other than the inverter as the power control device 22.

[0015] <Fastening of the side member 30 and the second cross member 31B> As shown in Fig. 1, each of the pair of side members 30 has a second fastening portion 60 that protrudes inward in the vehicle width direction. The second cross member 31B joined to the upper surface 20US in the vehicle height direction of the mechatronic unit 20 has first fastening portions 32 at both ends in the vehicle width direction.

[0016] Of the two first fastening portions 32 of the second cross member 31B, the right first fastening portion 32 in the vehicle width direction and the second fastening portion 60 of the right side member 30 in the vehicle width direction are fastened by a fastening member 70. Of the two first fastening portions 32 of the second cross member 31B, the left first fastening portion 32 in the vehicle width direction and the second fastening portion 60 of the left side member 30 in the vehicle width direction are fastened by a fastening member 70.

[0017] Between the pair of side members 30 in a top view of the vehicle, the second fastening portion 60 has a tapered portion 61 whose length in the vehicle length direction becomes shorter as it goes from the outside to the inside in the vehicle width direction.

[0018] Fig. 3 shows a schematic cross-sectional view of the vehicle 100 in Fig. 1 along the line 3-3 passing through the center of the fastening member 70 in Fig. 3. As shown in Fig. 3, the second fastening portion 60 has a groove portion 90 that extends in the vehicle height direction and opens upward and downward in the vehicle. The first fastening portion 32 is connected to the groove portion 90. That is, the first fastening portion 32 is sandwiched by the second fastening portion 60 from the front and rear of the vehicle.

[0019] The first fastening portion 32 is provided with a through hole 81 extending in the horizontal direction. The second fastening portion 60 is also provided with two through holes 80 extending in the horizontal direction. The bolt 70A, which is a fastening member 70, is inserted through the two through holes 80 and the through hole 81. A nut 70B is screwed onto the tip side of the bolt 70A. The first fastening portion 32 and the second fastening portion 60 are fastened by screwing so as to be sandwiched between the head of the bolt 70A and the nut 70B. Thus, the first fastening portion 32 and the second fastening portion 60 are fastened by the bolt 70A, which is a fastening member 70, and the nut 70B.

[0020] <Method for Removing and Attaching the Mechatronic Unit 20> Next, a method for removing the mechatronic unit 20 in the vehicle 100 will be described. When removing the mechatronic unit 20 from the vehicle 100, first, the drive shaft 51 is removed from the mechatronic unit 20. Next, the fastening member 70 that fastens the first fastening portion 32 and the second fastening portion 60 is removed. After that, the first fastening portion 32 is removed from the groove portion 90 by moving the mechatronic unit 20 above the vehicle. In this way, the mechatronic unit 20 and the second cross member 31B are removed from the vehicle 100.

[0021] Next, a method for attaching the mechatronic unit 20 and the second cross member 31B to the vehicle 100 from which the mechatronic unit 20 has been removed will be described. The mechatronic unit 20 to which the second cross member 31B is joined is moved between the pair of side members 30 and under the first cross member 31A from above or below the vehicle. After that, the first fastening portion 32 of the second cross member 31B is connected to the groove portion 90 provided in the second fastening portion 60. After that, the first fastening portion 32 and the second fastening portion 60 are fastened by the fastening member 70.

[0022] <Operation of the Present Embodiment> The vehicle 100 can remove the second cross member 31B, which is joined to the upper surface 20US in the vehicle height direction of the mechatronics unit 20, from the side member 30 by removing the fastening member 70 that fastens the first fastening portion 32 and the second fastening portion 60. As a result, the vehicle 100 can remove the mechatronics unit 20 together with the second cross member 31B, which is joined to the upper surface 20US in the vehicle height direction of the mechatronics unit 20, from the side member 30.

[0023] <Effects of this embodiment> (1) In vehicle 100, the distance between the first cross member 31A and the second cross member 31B in the vehicle length direction is shorter than the vehicle length direction of the electromechanical unit 20, but the electromechanical unit 20 is easy to remove.

[0024] (2) Between a pair of side members 30 in a top view of the vehicle, the second fastening portion 60 has a tapered portion 61 in which the length in the vehicle length direction decreases as it moves from the outside in the vehicle width direction to the inside in the vehicle width direction. The side member 30 having the second fastening portion 60 supports the load acting from the mechatronics unit 20 via the second fastening portion 60. The longer the length of the second fastening portion 60 in the vehicle length direction, the wider the area of ​​the side member 30 that can support the load acting from the mechatronics unit 20. On the other hand, the longer the length of the second fastening portion 60 in the vehicle length direction, the larger the proportion that the second fastening portion 60 occupies between the pair of side members 30. When performing work to remove the mechatronics unit 20, it is preferable that the proportion that the second fastening portion 60 occupies between the pair of side members 30 is small. The vehicle 100 can support the load acting from the mechatronics unit 20 over a wide area of ​​the side member 30 because the second fastening portion 60 has a tapered portion 61. Furthermore, the vehicle 100, by having a tapered portion 61 in the second fastening portion 60, can secure space between the pair of side members 30 for the work of removing the electromechanical unit 20.

[0025] (3) The vehicle 100 has a horizontally extending through hole 81 in the first fastening portion 32. The vehicle 100 also has a horizontally extending through hole 80 in the second fastening portion 60. The first fastening portion 32 and the second fastening portion 60 are fastened together by fastening members 70 inserted through the through holes 80 and 81. Therefore, the vehicle 100 has vertically extending through holes in the first fastening portion 32 and the second fastening portion 60, and the fastening members are inserted through vertically extending through holes, making it easier to visually inspect the fastening members 70 from above and below the vehicle. Therefore, the fastening members 70 are easier to remove in the vehicle 100.

[0026] (4) In a side view of the vehicle, the first cross member 31A and the second cross member 31B are positioned above the upper surface 30US of the pair of side members 30. As a result, in a side view of the vehicle 100, the electromechanical unit 20 and the side members 30 overlap. This allows the vehicle 100 to protect the electromechanical unit 20 from impacts from the left and right directions by the side members 30.

[0027] <Example of changes> This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0028] The through-hole 81 in the first fastening portion 32 and the through-hole 80 in the second fastening portion 60 of the vehicle 100 do not have to extend horizontally. For example, as shown in Figure 4, the through-hole 81 in the first fastening portion 32 and the through-hole 80 in the second fastening portion 60 of the vehicle 100 may extend vertically. In this modified example, the first fastening portion 32 and the second fastening portion 60 are fastened together by fastening members 70, namely bolts 70A and nuts 70B, overlapping in the vertical direction of the vehicle.

[0029] If the first fastening portion 32 and the second fastening portion 60 are fastened together, the second fastening portion 60 does not need to have a groove portion 90. For example, the first fastening portion 32 and the second fastening portion 60 may be fastened together by the fastening member 70 in the order of the first fastening portion 32 and the second fastening portion 60 from the front of the vehicle.

[0030] If the first fastening portion 32 and the second fastening portion 60 are fastened together, the multiple cross members 31 may be positioned below the upper surface 30US of the pair of side members 30. For example, the first cross member 31A and the second cross member 31B may be positioned below the upper surface 30US of the pair of side members 30.

[0031] The upper surface 20US of the electromechanical unit 20 of the vehicle 100 in the vehicle height direction only needs to be joined to at least one of the first cross member 31A and the second cross member 31B. For example, the upper surface 20US of the electromechanical unit 20 in the vehicle height direction only needs to be joined to the first cross member 31A. For example, the upper surface 20US of the electromechanical unit 20 in the vehicle height direction only needs to be joined to the first cross member 31A and the second cross member 31B.

[0032] Referring to Figure 5, we will now describe the case where only the first cross member 31A of the two cross members 31B is joined to the upper surface 20US of the mechatronics unit 20 in the vehicle height direction. As shown in Figure 5, the first cross member 31A has first fastening portions 32 at both ends in the vehicle width direction. Furthermore, the first fastening portions 32 of the first cross member 31A are fastened to the second fastening portions 60 of the side member 30 by fastening members 70. The vehicle 100 can remove the first cross member 31A, which is joined to the upper surface 20US of the mechatronics unit 20 in the vehicle height direction, from the side member 30 by removing the fastening members 70 that fasten the first fastening portions 32 and the second fastening portions 60. As a result, the vehicle 100 can remove the mechatronics unit 20 together with the first cross member 31A, which is joined to the upper surface 20US of the mechatronics unit 20 in the vehicle height direction, from the side member 30. Therefore, the same effects as in the above embodiment can be obtained with this modified example vehicle 100. Note that if a cross member 31, which does not have first fastening portions 32 at both ends, is joined to the upper surface 20US of the mechatronic unit 20 in the vehicle height direction, separate from the first cross member 31A, then the connection between the cross member 31 and the upper surface 20US can be removed. For example, if the cross member 31, which does not have first fastening portions 32 at both ends, and the upper surface 20US of the mechatronic unit 20 in the vehicle height direction are fastened by a fastening member, then the fastening member can be removed.

[0033] Referring to Figure 6, the case in which both the first cross member 31A and the second cross member 31B are joined to the upper surface 20US of the electromechanical unit 20 in the vehicle height direction will be described. As shown in Figure 6, the first cross member 31A and the second cross member 31B each have first fastening portions 32 at both ends in the vehicle width direction. The pair of side members 30 each have two second fastening portions 60 that protrude inward in the vehicle width direction. The first fastening portions 32 of the first cross member 31A are fastened to the second fastening portions 60 of the side members 30 by fastening members 70. The first fastening portions 32 of the second cross member 31B are fastened to the second fastening portions 60 of the side members 30 by fastening members 70. The vehicle 100 can remove the first cross member 31A and the second cross member 31B from the side member 30 by removing all the fastening members 70 that fasten the first fastening portion 32 and the second fastening portion 60. As a result, the vehicle 100 can remove the electromechanical unit 20 from the side member 30, along with the first cross member 31A and the second cross member 31B which are joined to the upper surface 20US of the electromechanical unit 20 in the vehicle height direction. Therefore, the same effects as in the above embodiment can be obtained with this modified vehicle 100 as with the above embodiment.

[0034] The second fastening portion 60 does not necessarily have a tapered portion 61. That is, as shown in Figures 5 and 6, the length of the second fastening portion 60 in the vehicle length direction on the vehicle 100 may be the same from the outside in the vehicle width direction to the inside in the vehicle width direction. [Explanation of Symbols]

[0035] 10...Battery pack, 11...Frame, 14...Battery cell, 20...Mechatronic unit, 20US...Top surface of mechatronic unit in the vehicle height direction, 21...Motor, 22...Power control device, 30...Side member, 30US...Top surface of side member, 31...Cross member, 31A...First cross member, 31B...Second cross member, 32...First fastening part, 60...Second fastening part, 61...Tapered part, 70...Fastening member, 80, 81...Through hole, 100...Vehicle

Claims

1. This is a vehicle that drives its drive wheels using the electricity stored in the battery cells inside the battery pack. A ladder-like frame in which multiple cross members extending in the vehicle width direction are installed between a pair of side members that are spaced apart in the vehicle width direction and extend in the vehicle length direction, It comprises a mechatronics unit consisting of a motor which is a power source for driving the drive wheels and a power control device which supplies power to the motor, The aforementioned plurality of cross members include a first cross member and a second cross member adjacent to the first cross member. The electromechanical unit is disposed between the pair of side members and below the first cross member and the second cross member, and the distance between the first cross member and the second cross member in the vehicle length direction is shorter than the length of the electromechanical unit in the vehicle length direction. At least one of the first cross member and the second cross member is joined to the upper surface of the mechanical-electric unit in the vehicle height direction, and at least one of the cross members joined to the upper surface of the mechanical-electric unit in the vehicle height direction has first fastening portions at both ends in the vehicle width direction. Each of the pair of side members has a second fastening portion that protrudes inward in the vehicle width direction, The first fastening portion and the second fastening portion are fastened together by a fastening member. vehicle.

2. In a top view of the vehicle, the second fastening portion between the pair of side members has a tapered portion in which the length in the vehicle length direction decreases as it moves from the outside in the vehicle width direction to the inside in the vehicle width direction. The vehicle according to claim 1.

3. The first fastening portion and the second fastening portion are provided with through holes extending horizontally. The first fastening portion and the second fastening portion are fastened together by the fastening member inserted through the through hole. The vehicle according to claim 1.

4. In a side view of the vehicle, the first cross member and the second cross member are positioned above the upper surface of the pair of side members. The vehicle according to claim 1.

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