Battery attachment structure

Abstract

To provide a battery attachment structure allowing a battery to be continuously used even when a nut attached to the battery is worn.SOLUTION: In a battery attachment structure, a nut member is detachably attached to an outer surface of an outer plate of a battery, and the battery is fastened to a vehicle body frame by screwing, into the nut member, a fastening bolt inserted into a fastening hole formed in the vehicle body frame.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a structure for attaching a battery to a vehicle body frame. [Background technology]

[0002] Driving batteries for electric vehicles, hybrid vehicles, and the like are large and are attached to the vehicle frame with bolts. Figures 6 to 8 show a conventional structure for attaching a battery 100 to the horizontal portion 32 of the vehicle frame 30. A mounting hole 102 is formed in a bottom plate 101, which is part of the battery case of the battery 100. A nut 103 is firmly fixed by welding or the like to the inner surface of the bottom plate 101 at a position corresponding to the mounting hole 102.

[0003] Fastening holes 33 are formed in the horizontal portion 32 of the body frame 30. Fastening bolts 40 are inserted through the fastening holes 33 and the mounting holes 102 and threaded into nuts 103, thereby fastening the battery 100 to the body frame 30.

[0004] When a vehicle is running and the battery's power is consumed, the battery needs to be charged, but if the battery is charged while attached to the vehicle frame, the vehicle cannot be driven while charging. Therefore, in order to allow the vehicle to continue driving while the battery is charging, it has been considered to remove the battery that needs to be charged from the vehicle frame and replace it with a charged battery, and to charge the battery while it is removed from the vehicle. Summary of the Invention [Problem to be solved by the invention]

[0005] Frequent battery replacement causes the nuts that attach the battery to wear out, which can cause the battery to become unable to be attached to the vehicle frame, even if the battery itself is still usable.

[0006] An object of the present disclosure is to provide a battery mounting structure that allows the battery to continue to be used even if the nuts attached to the battery wear out. [Means for solving the problem]

[0007] The battery mounting structure of the present disclosure has a nut member removably attached to the outer surface of the battery's outer plate, and the battery is fastened to the body frame by screwing a fastening bolt inserted into a fastening hole formed in the body frame into the nut member. [Effects of the Invention]

[0008] Since the nut member is attached to the battery in a detachable and replaceable manner, even if the nut wears out and becomes unusable, the nut member can be easily replaced, allowing the battery to continue to be used. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 illustrates a first embodiment. [Figure 2A] FIG. 4 is a side view of the nut member. [Figure 2B] FIG. 2 is a plan view of the nut member. [Figure 3] 10A and 10B are diagrams showing a structure for attaching a nut member to a bottom plate. [Figure 4] FIG. 10 is a cross-sectional view of the nut member attached to the bottom plate. [Figure 5] FIG. 10 is a cross-sectional view of a state in which the nut member of the second embodiment is attached to a bottom plate. [Figure 6] 1A and 1B are diagrams showing a conventional battery mounting structure. [Figure 7] 1A and 1B are diagrams showing a conventional battery mounting structure. [Figure 8] FIG. 10 is a cross-sectional view of a conventional battery mounting structure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that each of the embodiments described below represents a specific example of the present disclosure. Therefore, the components, the arrangement positions and connection forms of the components, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components.

[0011] Furthermore, each drawing is a schematic diagram and is not necessarily an exact illustration. In each drawing, substantially the same components are denoted by the same reference numerals, and redundant explanations will be omitted or simplified.

[0012] 1 to 4 are diagrams showing a structure for attaching a battery 20 of the first embodiment to a vehicle body frame 30. In Fig. 1, the vehicle body frame 30 is a substantially L-shaped frame member having a vertical portion 31 and a horizontal portion 32, and the battery 20 is mounted on the horizontal portion 32.

[0013] A predetermined number of nut members 1 are attached to the outer surface (lower surface) of a bottom plate 21, which is part of the outer plate of the battery 20, with mounting bolts 10. The battery 20 is placed on a horizontal portion 32, and fastening bolts 34 are screwed into the nut members 1 from below, thereby attaching the battery 20 to the horizontal portion 32.

[0014] 2A shows a side view of the nut member 1, and FIG. 2B shows a bottom view of the nut member. As shown in FIG. 2A, the nut member 1 has a nut portion 2 and an extension portion 3 that extends laterally from the base of the nut portion 2 (the upper part of the figure). In FIG. 2B, an internal thread 4 is formed in the center of the nut portion 2 in the direction perpendicular to the plane of the figure. Each extension portion 3 has a through hole 5 formed in the direction perpendicular to the plane of the figure. In this example, two extension portions 3 and two through holes 5 are formed, one on each side of the nut portion 2, but the number and positions of the extension portions 3 and through holes 5 can be designed appropriately depending on the size of the nut member 1, etc.

[0015] As shown in Figures 3 and 4, a mounting hole 22 is formed in the bottom plate 21 of the battery 20, and a nut 23 is firmly fixed by welding or the like to the inner surface of the bottom plate 21 (upper part of Figure 4) at a position corresponding to the mounting hole 22.

[0016] The nut member 1 is attached to the bottom plate 21 by aligning the through hole 5 with the mounting hole 22 from below the bottom plate 21, inserting the mounting bolt 10 through the through hole 5 and the mounting hole 22, and screwing it into the nut 23.

[0017] A predetermined number of fastening holes 33 for fastening the battery 20 are formed in the horizontal portion 32. The battery 20, with the nut member 1 attached to the underside of the bottom plate 21, is placed on the horizontal portion 32 by aligning the fastening holes 33 with the internal threads 4, and the fastening bolts 34 are inserted into the fastening holes 33 and screwed into the internal threads 4, thereby fastening and attaching the battery 20 to the horizontal portion 32.

[0018] When the vehicle is running and the power of the battery 20 decreases, making it necessary to charge the battery 20, the fastening bolt 34 is released and the battery 20 is removed from the horizontal portion 32. At this time, the nut member 1 remains attached to the bottom plate 21.

[0019] Next, the charged battery 20 is placed on the horizontal portion 32, and the charged battery 20 is attached to the horizontal portion 32 by screwing the fastening bolt 34 into the nut member 1 attached to the bottom plate 21 of the charged battery 20.

[0020] Repeated replacement of the battery 20 may cause the internal thread 4 to wear. The nut member 1 with the worn internal thread 4 can be easily removed from the bottom plate 21 by releasing the mounting bolt 10, and a new nut member 1 can be easily attached to the bottom plate 21.

[0021] 5 is a diagram showing details of a nut member 51 in the second embodiment. The nut member 51 has a nut portion 52, an extension portion 53 that extends laterally from the base of the nut portion 52 (upper portion in the figure), and an insertion portion 56 that is formed on the extension portion 53 and protrudes upward at a position corresponding to the nut portion 52. An internal thread 54 is formed from the nut portion 52 to the insertion portion 56. A through hole 55 is formed in each of the extension portions 53.

[0022] Compared to the nut member 1 of the first embodiment, the length of the nut portion 52 protruding downward from the extension portion 53 is shorter than the nut portion 2 of the nut member 1. The combined length of the nut portion 52 and the insertion portion 56 is approximately the same as that of the nut portion 2. The internal thread 54 is formed from the nut portion 52 to the insertion portion 56, so that its length is approximately the same as that of the internal thread 4.

[0023] On the other hand, a bottom plate 61 of the battery 60 is formed with mounting holes 62 and an insertion hole 64 between the two mounting holes 62 into which the insertion portion 56 can be inserted. A nut 63 is firmly fixed by welding or the like to the inner surface (upper side in the figure) of the bottom plate 61 at a position corresponding to the mounting hole 62.

[0024] When attaching the nut member 51 to the bottom plate 61, the through hole 55 is positioned in the mounting hole 62, and the insertion portion 56 is inserted into the insertion hole 64 to place the nut member 51 on the underside of the bottom plate 61. In this state, the mounting bolt 10 is inserted through the through hole 55 and the mounting hole 62 and screwed into the nut 63, thereby attaching the nut member 51 to the bottom plate 61.

[0025] The procedure for attaching the battery 60 to the horizontal portion 32 is the same as in the first embodiment.

[0026] In the second embodiment, a portion of the nut member 51 is inserted into the insertion hole 64 of the bottom plate 61 as the insertion portion 56, so the length of the nut member 51 protruding downward from the bottom plate 61 is shorter than that of the nut member 1 of the first embodiment. Therefore, the distance between the bottom plate 61 and the horizontal portion 32 is shorter than that of the first embodiment, so the height of the space above the horizontal portion 32 required when attaching the battery 60 to the horizontal portion 32 is lower, and the battery 60 can be attached in a smaller space than in the first embodiment.

[0027] As described above, according to the battery mounting structure of the present disclosure, even if the female thread into which the fastening bolt that mounts the battery to the vehicle frame is threaded becomes worn, the nut member can be removed from the battery and easily replaced. [Industrial Applicability]

[0028] The present invention can be suitably used in a structure for attaching a battery to a vehicle frame. [Explanation of symbols]

[0029] 1, 51 Nut member 2, 52 Nut part 3, 53 extension part 4, 54 female thread 5, 55 through holes 10 Mounting bolts 20, 60 battery 21, 61 Outer plate (bottom plate) 22, 62 mounting holes 23, 63 Nut 30 Body frame 31 Vertical section 32 Horizontal section 33 Fastening hole 34 Fastening bolt 40 Fastening bolt 56 Insertion section 64 Insertion hole 100 Battery 101 Outer plate (bottom plate) 102 Mounting hole 103 Nut

Claims

1. a nut member is detachably attached to the outer surface of the outer plate of the battery; a fastening bolt inserted into a fastening hole formed in the body frame and threaded into the nut member to fasten the battery to the body frame; Battery mounting structure.

2. The nut member has a nut portion having an internal thread formed therein, and an extension portion extending laterally from the nut portion and having a through hole formed therein, mounting holes are formed in the outer plate, and nuts are attached to the inner surface of the outer plate at positions corresponding to the mounting holes; The nut member is attached to the outer plate by an attachment bolt that is inserted through the through hole and the attachment hole and screwed into the nut. The battery mounting structure according to claim 1 .

3. an insertion portion is formed on the opposite side of the nut portion from the extension portion of the nut member; an insertion hole into which the insertion portion is inserted is formed in the outer plate; The female thread is formed from the nut portion to the insertion portion. The battery mounting structure according to claim 2 .

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