Harness fixing structure

Abstract

To provide a harness fixing structure of which the clip for fixing a harness can be easily detached without increasing costs.SOLUTION: A harness fixing structure comprises a clip which is attachably / detachably fixed to a fixing hole 11 formed in a wall member in a state of supporting a harness 20. The clip integrally comprises: a binding part which binds the harness; and a fixing part 52 having a pair of pawl parts 522 engaged with the fixing hole 11 when it is inserted into the fixing hole 11. The fixing hole 11 comprises a pair of groove parts 11a formed so that the pawl parts 522 can pass therethrough. The clip is fixed to the wall member 11 by the fact that a line segment connecting the pair of pawl parts 522 and a line segment connecting the pair of groove parts 11a have a predetermined angle in a state in which the fixing part 52 is inserted into the fixing hole 11, and the fixing part 52 becomes detachable from the fixing hole 11 when the clip is rotated and the pawl parts coincide with the groove parts.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a harness fixing structure. [Background technology]

[0002] Patent Document 1 discloses a component fixing clip that is composed of a cable tie for fixing a harness and a base for fixing to a vehicle body panel. With this component fixing clip, the harness is fixed to the vehicle body panel by fitting the cable tie into the base, while the cable tie can be removed by rotating the base and pulling the cable tie up. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-276040 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technology, the cable tie to which the harness is fixed can be removed from the vehicle body panel by rotating the base, but the clip is composed of two separate parts, the cable tie and the base, and the clip has a complex structure, which increases costs. In addition, the cable tie must be attached to the base after the base is attached to the vehicle body, which increases the number of steps required for installation and removal.

[0005] The present invention has been made in consideration of such problems, and has an object to provide a technique that enables clips that secure a harness to be easily removed without increasing costs. [Means for solving the problem]

[0006] One embodiment of the present invention is applied to a harness fixing structure for supporting a harness connected to a battery module on a wall member. The structure includes a clip that is detachably fixed to a fixing hole formed in the wall member while the harness is supported. The clip has a bundling portion for bundling the harness. and, A pair of claws that engage with the fixing holes when inserted into the fixing holes of Fixed part with And, The fixing hole is provided with a pair of grooves formed so that the claws can pass through. When the fixing part is inserted into the fixing hole, the line segment connecting the pair of claws and the line segment connecting the pair of grooves form a predetermined angle, so that the clip is fixed to the wall member, and when the clip is rotated so that the claws and the grooves are aligned, the fixing part can be removed from the fixing hole. The predetermined angle is an acute angle, and is set to a larger angle as the flexibility of the harness increases. Effect of the Invention

[0007] According to the present invention, the pair of claws of the clip that secures the harness are at a predetermined angle with the pair of grooves of the fixing hole, so that the clip and the wall member are fixed, and the claws pass through the grooves by simply rotating the clip by a predetermined angle, so that the clip can be easily removed. This makes it possible to easily remove the clip that secures the harness without increasing the number of parts or the number of assembly steps. In addition, the clip has a simple structure in which the binding part and the fixing part are integrally formed, so that the parts cost can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram of a battery pack having a harness fixing structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an explanatory diagram of the harness fixing structure. [Figure 3A] FIG. 3A is an explanatory diagram of a clip. [Figure 3B] FIG. 3B is an explanatory diagram of the clip. [Figure 3C] FIG. 3C is an explanatory diagram of a clip. [Figure 4A] FIG. 4A is an explanatory diagram of how the clip is attached. [Figure 4B] FIG. 4B is an explanatory diagram of how the clip is attached. [Diagram 5] FIG. 5 is an explanatory diagram for attaching the harness. [Figure 6] FIG. 6 is an explanatory diagram showing how to remove the harness. [Figure 7] FIG. 7 is an explanatory diagram for attaching the harness. [Figure 8] FIG. 8 is an explanatory diagram showing how to remove the harness. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] FIG. 1 is an explanatory diagram of a battery pack 1 to which a harness fixing structure 100 according to an embodiment of the present invention is applied.

[0011] The battery pack 1 is composed of a plurality of battery modules 2, a battery control unit 3, etc. Fig. 1 is a cross-sectional view of the battery pack 1 as viewed from above. The battery pack 1 is mounted on, for example, an electric vehicle and functions as a power source for the electric vehicle. The battery pack 1 is composed of a plurality of battery modules 2 housed therein.

[0012] The battery module 2 is configured by stacking a plurality of flat unit cells, which are held by a plate-like wall member 10 standing on the bottom surface of the battery pack 1. A harness 20 is connected to the battery module 2.

[0013] The battery control unit 3 is connected to one end of a harness 20 which is connected to each of the plurality of battery modules 2. The battery control unit 3 obtains information relating to the voltage of each of the plurality of battery modules 2 via the harness 20.

[0014] The harness 20 is configured by covering a conductive wire made of a metal such as copper with an insulating resin. The harness 20 is flexible. The harness 20 is supported via clips 5 in fixing holes 11 (see FIG. 2) formed in the wall member 10 that holds the battery modules 2.

[0015] FIG. 2 is an explanatory diagram of a harness fixing structure 100 for supporting the harness 20 on the wall member 10 according to the present embodiment.

[0016] The harness fixing structure 100 is composed of a clip 5 that ties and fixes the harness 20 , and a fixing hole 11 formed in a wall member 10 that holds the battery module 2 .

[0017] The fixing hole 11 is a substantially circular hole drilled in the wall member 10, and has two grooves 11a formed on either side of the center, the grooves 11a being enlarged in diameter.

[0018] As described below, the clip 5 fastens the harness 20 with the fastening portion 51, and supports the harness 20 to the wall member 10 by fixing the fixing portion 52 to the fixing hole 11. Fig. 2 shows an example in which three clips 5 are fixed to three fixing holes 11 to support the harness 20.

[0019] The fixing holes 11 are arranged at approximately equal intervals with a predetermined interval L. The interval L is set to the minimum necessary interval so that the harness 20 does not move or the clip 5 does not come off due to vibrations of the electric vehicle on which the battery pack 1 is mounted, etc. This interval L is set to about 180 mm to 200 mm, for example, but may be set to a larger interval (for example, 300 mm or more) depending on the thickness and weight of the harness 20.

[0020] Figures 3A, 3B and 3C are explanatory diagrams of the clip 5 of this embodiment. Figures 3A and 3B are side views of the clip 5, and Figure 3C is a cross-sectional view taken along CC in Figure 3B.

[0021] The clip 5 is configured to include a binding portion 51 that is wrapped around the harness 20 to bind and secure the harness 20, and a fixing portion 52 that is inserted into a fixing hole 11 of the wall member 10 to fix the clip 5 to the fixing hole 11.

[0022] The binding part 51 is composed of a band 511 and a locking part 512. The band 511 extends in a belt shape from the locking part 512. The band 511 has serrations 511a processed into an uneven shape formed on its outer circumferential surface. The locking part 512 has an insertion hole 512a into which the band 511 is inserted, and an engaging claw 512b that engages with the serrations 511a of the band 511.

[0023] The fixing portion 52 is configured to include a shaft portion 521 , a claw portion 522 and a pressing portion 523 .

[0024] Shaft portion 521 is a rod-shaped member extending below binding portion 51. Shaft portion 521 is formed so that its cross-sectional shape becomes smaller toward the tip on the side away from binding portion 51, and the cross-sectional length on the side closest to binding portion 51 approximately matches the diameter of fixing hole 11.

[0025] A pair of claws 522 (522a, 522b) are connected to the tip of the shaft 521 in the left-right direction, sandwiching the shaft 521 therebetween. The claws 522 are elastic, extend upward (toward the binding part 51) from the tip of the shaft 521, and are formed so as to gradually move away from the shaft 521.

[0026] At the upper end of the claw portion 522, a step portion 525 (525a, 525b) is formed which reduces in diameter toward the shaft portion 521. As will be described later, the step portion 525 climbs over the fixing hole 11 and engages with the rear side of the wall member 10, whereby the clip 5 is fixed to the fixing hole 11.

[0027] The pressing portion 523 extends in the left-right direction (the direction in which the claw portion 522 is provided) of the shaft portion 521. The pressing portion 523 has elasticity, and is pressed against the wall member 10 when the fixing portion 52 is inserted into the fixing hole 11, thereby sandwiching the wall member 10 between the claw portion 522 and the pressing portion 523.

[0028] As shown in FIG. 3C, the cross section of fixing portion 52 is cross-shaped, with shaft portion 521 having a width that is approximately the same as (slightly smaller than) the diameter of fixing hole 11, and a pair of claw portions 522 arranged perpendicular to shaft portion 521 having a width that is larger than the diameter of fixing hole 11.

[0029] 4A and 4B are diagrams showing a state in which the clip 5 of this embodiment supports the harness 20. Fig. 4A shows a state in which the clip 5 is inserted into the fixing hole 11, and Fig. 4B shows a state in which the clip 5 is fixed to the fixing hole 11.

[0030] The binding part 51 binds the harness 20 by wrapping the band 511 around the harness 20 and inserting a tip of the band 511 into an insertion hole 512a of the lock part 512. The serrations 511a of the band 511 inserted into the insertion hole 512a engage with the engaging claws 512b, so that the band 511 does not come out of the insertion hole 512a.

[0031] The clip 5 of the present embodiment is configured such that the arrangement direction of the claw portion 522 with respect to the shaft portion 521 is substantially perpendicular to the wiring direction of the harness 20. However, the present invention is not limited to this configuration, and the arrangement direction of the harness 20 may be the same as the arrangement direction of the claw portion 522.

[0032] To support the harness 20 on a wall member, first, the harness 20 is supported by the binding portion 51 of the clip 5, and in this state, the fixing portion 52 of the clip 5 is inserted into the fixing hole of the wall member 10. Specifically, as shown in Fig. 4A, the fixing portion 52 is inserted into the fixing hole 11. At this time, the pair of claw portions 522 elastically deform according to the diameter of the fixing hole 11, and the width of the claw portions 522 is reduced.

[0033] When fixing portion 52 is further inserted into fixing hole 11 and claw portion 522 passes through fixing hole 11, step portions 525 of the pair of claw portions 522 move outward beyond the diameter of fixing hole 11. In this state, step portions 525 of claw portions 522 engage with the rear side of wall member 10, and fixing portion 52 cannot be removed from fixing hole 11.

[0034] At this time, pressing portion 523 further elastically deforms and presses wall member 10 from above wall member 10. As a result, wall member 10 is clamped in fixing hole 11 between claw portion 522 of fixing portion 52 and pressing portion 523, so that fixing portion 52 is reliably fixed in fixing hole 11.

[0035] With this configuration, simply by inserting the fixing portion 52 into the fixing hole 11, the clip 5 supporting the harness 20 is prevented from slipping out of the fixing hole 11, and the harness 20 is supported by the wall member.

[0036] Next, the case where the clip 5 is removed from the fixing hole 11 of the wall member 10 will be described.

[0037] The clip 5 is prevented from slipping out of the fixing hole 11 by the engagement of the stepped portion 525 of the claw portion 522 with the wall member 10 surrounding the fixing hole 11. For this reason, when removing the clip 5 from the fixing hole 11, it is necessary to pass the claw portion 522 through the fixing hole 11 in some way.

[0038] As an example, a method of removing the wall member 10 by reducing the diameter of the claw portion 522 using a tool from the back side of the wall member 10 is conceivable. However, this method requires work such as disassembling the battery module 2 to pass the tool through the back side of the wall member 10, which not only increases the number of work steps, but also increases the number of steps required to ensure the safety of workers who work near the battery module 2 that has a high voltage, resulting in an increase in costs.

[0039] On the other hand, a method using a clip in which the binding part and the base can be separated can be considered, but the structure of the clip is complicated compared to clip 5 in which the binding part and the fixing part are integrally formed as shown in Figures 3A and 3B. Also, it is necessary to attach the cable tie to the base after the base is attached, which increases the number of steps for attachment and removal, resulting in a problem of increased costs.

[0040] Therefore, the harness fastening structure 100 of this embodiment has a configuration as described below, which makes it easy to remove the clip 5 without increasing costs.

[0041] FIG. 5 is an explanatory diagram of the case where the clip 5 of this embodiment is fixed to the fixing hole 11, and FIG. 6 is an explanatory diagram of the case where the clip 5 is removed from the fixing hole 11. As shown in FIG.

[0042] 3C, fixing portion 52 of clip 5 has a cross-shaped cross section, and shaft portion 521 has a width substantially equal to the diameter of fixing hole 11. On the other hand, a pair of claw portions 522 has a width larger than the diameter of fixing hole 11.

[0043] A pair of grooves 11a are formed with an enlarged diameter at two positions on either side of the center of the fixing hole 11. The grooves 11a are formed to have a width greater than the width of the claws 522. In addition, the direction of the claws 522, i.e., the line segment S connecting the pair of claws 522, is disposed at a predetermined angle θ with respect to the direction of the grooves 11a, i.e., the line segment T connecting the pair of grooves 11a.

[0044] With this configuration, as shown in FIG. 5, the claw portions 522 of the clip 5 engage with the inner periphery of the fixing hole 11 at positions different from the groove portions 11a of the fixing hole 11, so that the clip 5 is prevented from slipping out of the fixing hole 11.

[0045] When removing the clip 5 from the fixing hole 11, as shown in FIG. 6, the clip 5 is rotated relative to the fixing hole 11 so that the direction of the claw portion 522 of the clip 5 coincides with the direction of the groove portion 11a.

[0046] This allows the tab 522 to pass through the groove 11 a, and the clip 5 is removed from the fixing hole 11 .

[0047] Here, the predetermined angle θ formed by the arrangement direction of the pair of grooves 11a and the arrangement direction of the pair of claws 522 will be considered.

[0048] Since the groove 11a has a shape that allows the claw 522 to pass through, it is desirable that the claw 522 does not easily come out when the clip 5 is fixed to the fixing hole 11. Therefore, it is desirable that the predetermined angle θ is the maximum, that is, 90 degrees. On the other hand, in such a configuration, the clip 5 needs to be rotated 90 degrees when it is removed from the fixing hole 11, and when the flexibility of the harness 20 and the interval L of the clips 5 are taken into consideration, there are cases where it is not possible to secure enough slack for the harness 20 to rotate 90 degrees.

[0049] Therefore, in order to prevent the claw portion 522 from coming off the groove portion 11a when the clip 5 is fixed and to prevent the harness 20 from being significantly deformed when the clip 5 is removed, the predetermined angle θ is set to an acute angle (5 degrees or more and less than 90 degrees), and the angle is set appropriately according to the flexibility of the harness 20. That is, when the harness 20 is highly flexible and it is desired to increase the contact area between the step portion 525 of the claw portion 522 and the wall member 10 so that the harness 20 does not easily come off due to vibrations of the electric vehicle, etc., the angle is set to be large.

[0050] On the other hand, in the opposite case, i.e., when the flexibility of the harness 20 is small and a small contact area between the step portion 525 of the claw portion 522 and the wall member 10 does not pose a problem, the efficiency of removal can be improved by setting the angle to a small value.

[0051] The embodiment of the present invention described above is a harness fixing structure for supporting the harness 30 connected to the battery module 2 on the wall member 10, and includes a clip 5 that is detachably fixed to a fixing hole 11 formed in the wall member 10 in a state in which the harness 20 is supported. The clip 5 integrally includes a bundling portion 51 that bundles the harness 20, and a fixing portion 52 having a pair of claw portions 522 that engage with the fixing hole 11 when inserted into the fixing hole 11. The fixing hole 11 includes a pair of groove portions 11a formed so that the claw portions 522 can pass through. When the fixing portion 52 is inserted into the fixing hole 11, the line segment S connecting the pair of claw portions 522 and the line segment T connecting the pair of groove portions 11a form a predetermined angle θ, so that the clip 5 is fixed to the wall member 10, and when the clip 5 is rotated so that the claw portions 522 and the groove portions 11a are aligned, the fixing portion 52 can be removed from the fixing hole 11.

[0052] With this configuration, when the clip 5 is fixed to the wall member 10, the claw portion 522 passes through the groove portion 11a, and the clip 5 can be easily removed by rotating the clip 5 by a predetermined angle θ. This allows the clip 5 for supporting the harness 20 to be easily removed from the wall member 10 without increasing the number of assembly steps. Furthermore, the clip 5 has a simple configuration in which the binding portion 51 and the fixing portion 52 are integrally formed, and therefore parts costs can be reduced.

[0053] In this embodiment, the wall member 10 has a plurality of fixing holes 11, and a plurality of clips 5 are fixed to the harness 20 at positions corresponding to the fixing holes 11, and the predetermined angle θ is set to an acute angle.

[0054] With this configuration, the harness 20 is not significantly deformed when the clip 5 is rotated, so that the clip 5 can be easily removed from the wall member 10 by rotating it through a predetermined acute angle θ.

[0055] In addition, in this embodiment, the fixing portion 52 has an axis portion 521 that is inserted into the fixing hole 11, and the claw portion 522 extends to the left and right of the axis portion 521 larger than the diameter of the fixing hole 11, and when inserted into the fixing hole 11, it elastically deforms so as to reduce in diameter to the diameter of the fixing hole 11.

[0056] With this configuration, the harness 20 can be easily attached to the wall member 10 simply by inserting the clip 5 into the fixing hole 11 of the wall member 10 .

[0057] FIG. 7 is an explanatory diagram of a modified example of this embodiment in which the predetermined angle θ is 90 degrees, and FIG. 8 is an explanatory diagram in which the clip 5 is removed from the fixing hole 11.

[0058] As described above, the predetermined angle θ between the direction of the groove portion 11a and the direction of the claw portion 522 is set to an acute angle. On the other hand, depending on how the harness 20 is handled, if only one clip 5 is provided and multiple clips are not required, or if the interval between the clips 5 is set to a larger interval (e.g., 300 mm or more) as described above, the flexible area of ​​the harness 20 becomes larger, so that the clip 5 can be easily rotated up to 90 degrees.

[0059] Therefore, in such a case, by setting the predetermined angle θ between the direction of the groove portion 11a and the direction of the claw portion 522 to 90 degrees (a right angle), the contact area between the step portion 525 of the claw portion 522 and the wall member 10 is maximized, and the clip 5 is configured not to easily come off the fixing hole 11 even due to vibration, etc.

[0060] The above describes the embodiments of the present invention and their modifications. However, the above embodiments and modifications merely illustrate some of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

[0061] In the above-described embodiment, the fixing portion 52 is configured to include the pressing portion 523, but the fixing portion 52 does not necessarily have to include the pressing portion 523.

[0062] In the above-described embodiment, the claws 522 are elastically deformed in accordance with the diameter of the fixing hole 11 when the clip 5 is inserted into the fixing hole 11, and thereby the clip 5 is fixed to the fixing hole 11, but this is not limited to the above. The claws 522 may have a structure that does not have elasticity, and the fixing part 52 may be inserted into the fixing hole 11 with the arrangement directions of the grooves 11a of the fixing hole 11 and the claws 522 aligned, and then the clip 5 may be rotated so that the angle formed between the pair of claws 522 and the pair of grooves 11a becomes a predetermined angle θ, as shown in FIG. 5 or 7. [Explanation of symbols]

[0063] 1: battery pack, 2: battery module, 5: clip, 10: wall member, 11: fixing hole, 11a: groove portion, 20: harness, 51: binding portion, 52: fixing portion, 100: harness fixing structure, 521: shaft portion, 522: claw portion, 523: pressing portion, 525: step portion

Claims

1. A harness fixing structure for supporting a harness connected to a battery module on a wall member, comprising: a clip that is detachably fixed to a fixing hole formed in the wall member while supporting the harness; the clip integrally includes a binding portion for binding the harness and a fixing portion having a pair of claw portions that engage with the fixing hole when the clip is inserted into the fixing hole, The fixing hole includes a pair of grooves formed to allow the claws to pass therethrough, When the fixing portion is inserted into the fixing hole, a line segment connecting a pair of the claw portions and a line segment connecting a pair of the groove portions form a predetermined angle, so that the clip is fixed to the wall member, When the clip is rotated so that the tab and the groove are aligned, the fixing portion can be removed from the fixing hole. The predetermined angle is an acute angle, and is set to a larger angle as the flexibility of the harness increases. Harness fixing structure.

2. The harness fixing structure according to claim 1, The wall member includes a plurality of the fixing holes, A plurality of the clips are fixed to the harness at positions corresponding to the fixing holes, Setting the predetermined angle to an acute angle. Harness fixing structure.

3. A harness fixing structure according to claim 1 or 2, The fixing portion includes a shaft portion that is inserted into the fixing hole, The claw portions extend to the left and right of the shaft portion to a diameter greater than the diameter of the fixing hole, and when inserted into the fixing hole, the claw portions elastically deform so as to reduce in diameter to the diameter of the fixing hole. Harness fixing structure.

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