Wire harness with anti-dragging structure

Abstract

The utility model discloses a wire harness with a pulling-resistant structure, and particularly relates to the technical field of automobile electronic wire harnesses, the wire harness comprises a box body and a wire harness arranged in the box body in a penetrating manner, one side end of the box body is movably connected with a cover plate, and the inner walls of the two end parts of the box body are respectively provided with a wire inlet positioning mechanism and a wire outlet positioning mechanism; the incoming line positioning mechanism and the outgoing line positioning mechanism are each composed of two positioning assemblies symmetrically connected to the two inner walls of the box body, a fixing column is fixedly arranged at the position, close to the inner side of the incoming line positioning mechanism, of the interior of the box body, and the fixing column is sleeved with a volute spiral spring. According to the utility model, wire harnesses with different thicknesses can pass through the wire harness box for use, when the wire harnesses are subjected to pulling forces in different directions, the wire harnesses can be prevented from being extruded and damaged by edges, and the arranged volute spiral spring and the buffer assembly can increase the buffer length of the wire harnesses in the box body and the buffer length of the wire harnesses when the wire harnesses are pulled, so that the wire harnesses are prevented from being damaged. And after the pulling force is finished, the wire harness can be automatically reset, so that the pulling resistance of the wire harness is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electronic wiring harnesses, and more specifically, to a wiring harness with an anti-pull structure. Background Art

[0002] Automotive electronic wiring harness refers to a component that is formed by contact terminals (connectors) punched out of copper and crimped with wires and cables, and then plastic-pressed with an insulator or an additional metal shell to form a wiring harness to connect the circuit. The main function of the wiring harness is to provide electrical connection to ensure that each electrical component can work normally. Existing wiring harnesses will be pulled during installation or when subjected to external forces. The wiring harnesses will be deformed or even broken by direct pulling force, and the wiring harnesses have poor resistance to pulling.

[0003] To this end, after searching, a Chinese patent with publication number CN219619048U discloses a wiring harness with an anti-pull structure, including a wiring harness body and a protective shell. In the utility model, the two guide rollers slide along the inner bottom wall of the groove under the force of the wiring harness body. Since it is known that the two guide rollers are elastically slidably installed on the inner bottom wall of the groove, when the part of the wiring harness body located in the groove is converted from a Z-shaped structure to a straight line state, the distance between the two ends of the wiring harness body increases, thereby offsetting the pulling force brought to the wiring harness body by the external force, and the anti-pull structure has a better effect.

[0004] However, the design of the inlet and outlet wires of the above-mentioned wire harness with an anti-pull structure in the shell is not ideal. When the wire harness is pulled, the direction may be different. Under the pulling force in the inclined direction, the contact position of the wire harness and the inlet and outlet wires of the shell is prone to cause the wire harness and the edges to be squeezed and damaged. In addition, the size of the inlet and outlet wires of the shell structure in the above-mentioned wire harness with an anti-pull structure is not suitable for use with wire harnesses of different thicknesses. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a wire harness with an anti-pull structure.

[0006] To achieve the above object, the utility model provides the following technical solutions: a wire harness with an anti-pull structure, comprising a box body and a wire harness inserted into the box body, one side end of the box body is movably connected with a cover plate, and the inner walls of the two ends of the box body are respectively installed with an inlet positioning mechanism and an outlet positioning mechanism;

[0007] The incoming line positioning mechanism and the outgoing line positioning mechanism are both composed of two positioning components symmetrically connected to the two inner walls of the box body, a fixing column is fixedly arranged on the inner side of the box body near the incoming line positioning mechanism, a spiral spring is sleeved on the outside of the fixing column, a buffer component is connected to the inner side of the box body near the outgoing line positioning mechanism, and a positioning column is arranged in the middle of the box body between the fixing column and the buffer component, the wiring harness passes through the inner side of the incoming line positioning mechanism, the outside of the spiral spring, the outside of the positioning column, the end of the buffer component in sequence, and then flows out from the inner side of the outgoing line positioning mechanism.

[0008] As a further improvement of the technical solution of the utility model, the cover plate is connected to the adjacent side ends of the box body by a hinge, and a card block is provided on one side end of the cover plate away from the hinge, and a card slot matching the position and structure of the card block is provided on the side end of the box body.

[0009] As a further improvement of the technical solution of the utility model, the positioning assembly includes a first fixed seat fixedly connected to the inner wall of the box body, a first telescopic frame is connected to the inner side of the end of the first fixed seat close to the side where the wiring harness is located, a first roller is movably installed on the inner side of the end of the first telescopic frame, and one end of the first telescopic frame is located inside the first fixed seat and is fixedly connected to a first movable plate, a first movable cavity is provided inside the first fixed seat corresponding to the outside of the first movable plate, and a first spring is connected between the end of the first movable plate and the inner wall of the first movable cavity.

[0010] As a further improvement of the technical solution of the utility model, a through hole for telescopic movement of the first telescopic frame is provided at the end of the first fixed seat, the through hole is connected to the interior of the first movable cavity, and the first roller and the inner side of the end of the first telescopic frame are movably connected via a rotating shaft.

[0011] As a further improvement of the technical solution of the utility model, the buffer assembly includes a second fixed seat fixedly connected to the inner wall of the box body, a second telescopic frame is connected to the inner side of the end of the second fixed seat close to the side where the wiring harness is located, a second roller is movably installed on the inner side of the end of the second telescopic frame, and one end of the second telescopic frame is located inside the second fixed seat and is fixedly connected to a second movable plate, a second movable cavity is provided inside the second fixed seat corresponding to the outside of the second movable plate, and a second spring is connected between the end of the second movable plate and the inner wall of the second movable cavity.

[0012] As a further improvement of the technical solution of the utility model, a through hole for the telescopic movement of the second telescopic frame is provided at the end of the second fixed seat, and the through hole is connected to the interior of the second movable cavity, and the second roller and the inner side of the end of the second telescopic frame are movably connected through a rotating shaft.

[0013] As a further improvement of the technical solution of the utility model, the ends of the fixing column and the positioning column are fixed to the inner wall of the box body by hot-melt adhesive.

[0014] Beneficial effects of the utility model:

[0015] 1. The inlet and outlet positioning mechanisms are respectively provided at the inlet and outlet ends of the box body, and the inlet and outlet positioning mechanisms are both composed of two positioning components symmetrically connected to the two inner walls of the box body. The structure of the positioning components can have a range of movement when subjected to force, that is, when the wire harness is pulled, the first roller on the positioning component on the side subjected to the force is pushed to drive the first telescopic frame to contract and compress the first spring, so that the inlet and outlet wires of the wire harness are tightly limited, and can adapt to the use of wire harnesses of different thicknesses, and when the wire harness is subjected to pulling forces in different directions, the structure of the roller can also prevent the wire harness from being squeezed and damaged by the edges;

[0016] 2. By setting a fixed column and sleeved with a volute spring on the outside of the fixed column, the wire harness is wound around the outside of the volute spring. When the wire harness is subjected to a pulling force, the wire harness will gradually tighten and exert a compressive force on the volute spring, that is, the elastic force of the volute spring is utilized to further improve the buffering effect of the wire harness subjected to the pulling force and improve the anti-pulling performance;

[0017] 3. By setting up a buffer component, the structure of the buffer component is similar to that of the positioning component. The difference is that the compression stroke of the second telescopic frame on the buffer component is longer, which can increase the buffer length of the wire harness inside the box body, increase the buffer length when it is pulled, and can reset itself after the pulling force ends, further increasing the anti-pulling performance of the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a cross-sectional view of the positioning component in the utility model.

[0020] Figure 3 It is a schematic diagram of the external structure of the positioning component in the utility model.

[0021] Figure 4 It is a cross-sectional view of the buffer component in the utility model.

[0022] The figures are marked as follows: 1. box body; 2. cover plate; 3. slot; 4. block; 5. positioning assembly; 6. wiring harness; 7. fixing column; 8. spiral spring; 9. positioning column; 10. buffer assembly; 501. first fixing seat; 502. first telescopic frame; 503. first roller; 504. first movable plate; 505. first movable cavity; 506. first spring; 101. second fixing seat; 102. second telescopic frame; 103. second roller; 104. second movable plate; 105. second movable cavity; 106. second spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As attached Figure 1-4 A wire harness with an anti-pull structure shown in the figure comprises a box body 1 and a wire harness 6 passing through the box body 1, a cover plate 2 is movably connected to one side end of the box body 1, and an inlet positioning mechanism and an outlet positioning mechanism are respectively installed on the inner walls of the two ends of the box body 1;

[0025] Both the incoming line positioning mechanism and the outgoing line positioning mechanism are composed of two positioning components 5 symmetrically connected to the two inner walls of the box body 1. A fixing column 7 is fixedly arranged on the inner side of the box body 1 near the incoming line positioning mechanism. A spiral spring 8 is sleeved on the outside of the fixing column 7. A buffer component 10 is connected to the inner side of the box body 1 near the outgoing line positioning mechanism, and a positioning column 9 is arranged in the middle of the box body 1 between the fixing column 7 and the buffer component 10. The wiring harness 6 passes through the inner side of the incoming line positioning mechanism, the outside of the spiral spring 8, the outside of the positioning column 9, the end of the buffer component 10 in sequence, and then flows out from the inner side of the outgoing line positioning mechanism.

[0026] As attached Figure 1 As shown, the cover plate 2 is connected to the adjacent side ends of the box body 1 by a hinge, and a card block 4 is provided on one side end of the cover plate 2 away from the hinge, and a card slot 3 matching the position and structure of the card block 4 is provided on the side end of the box body 1 to facilitate the closing and opening of the cover plate 2 and the box body 1.

[0027] As attached Figure 1-3As shown, the positioning assembly 5 includes a first fixed seat 501 fixedly connected to the inner wall of the box body 1, a first telescopic frame 502 is connected to the inner side of the end of the first fixed seat 501 close to the side where the wiring harness 6 is located, a first roller 503 is movably installed on the inner side of the end of the first telescopic frame 502, and one end of the first telescopic frame 502 is located inside the first fixed seat 501 and is fixedly connected to a first movable plate 504, a first movable cavity 505 is arranged inside the first fixed seat 501 corresponding to the outside of the first movable plate 504, a first spring 506 is connected between the end of the first movable plate 504 and the inner wall of the first movable cavity 505, a through hole for the telescopic movement of the first telescopic frame 502 is arranged at the end of the first fixed seat 501, the through hole is communicated with the inside of the first movable cavity 505, the first roller 503 is movably connected to the inner side of the end of the first telescopic frame 502 through a rotating shaft, and the positioning assembly 5 is provided for the effect of tightly limiting the inlet and outlet wires of the wiring harness 6, and can adapt to the use of wiring harnesses of different thicknesses.

[0028] As attached Figure 1 and attached Figure 4 As shown, the buffer assembly 10 includes a second fixed seat 101 fixedly connected to the inner wall of the box body 1, a second telescopic frame 102 is connected to the inner side of the end of the second fixed seat 101 close to the side where the wiring harness 6 is located, a second roller 103 is movably installed on the inner side of the end of the second telescopic frame 102, and one end of the second telescopic frame 102 is located inside the second fixed seat 101 and is fixedly connected to a second movable plate 104, a second movable cavity 105 is arranged inside the second fixed seat 101 corresponding to the outside of the second movable plate 104, a second spring 106 is connected between the end of the second movable plate 104 and the inner wall of the second movable cavity 105, a through hole is arranged at the end of the second fixed seat 101 for the telescopic movement of the second telescopic frame 102, the through hole is communicated with the interior of the second movable cavity 105, the second roller 103 is movably connected to the inner side of the end of the second telescopic frame 102 through a rotating shaft, and the buffer assembly 10 is convenient for adjusting the tension of the wiring harness 6 when in use, and can play an adaptive buffering effect in the process of pulling the wiring harness 6.

[0029] As attached Figure 1-4 As shown, the ends of the fixing column 7 and the positioning column 9 are fixed to the inner wall of the box body 1 by hot melt adhesive, so that the fixing column 7 and the positioning column 9 are conveniently fixed to the box body 1 .

[0030] Working principle: This utility model designs a wire harness with an anti-pull structure. The specific structure is as shown in the attached manual. Figure 1-4As shown, in the present technical scheme, the wire harness 6 penetrates into the interior of the box body 1 from the inlet end of the box body 1 and flows out from the outlet end of the box body 1. The wire harness 6 passes around the outside of the spiral spring 8, the outside of the positioning column 9 and the end of the buffer component 10 in the box body 1 in turn. After the installation of the wire harness 6 is completed, the cover plate 2 is closed to prevent the wire harness 6 from detaching from the box body 1. An inlet positioning mechanism and an outlet positioning mechanism are respectively provided at the inlet end and the outlet end of the box body 1. The inlet positioning mechanism and the outlet positioning mechanism are both composed of two positioning components 5 symmetrically connected to the two inner walls of the box body 1. The structure of the positioning component 5 can have a range of movement when subjected to force. That is, when the wire harness 6 is pulled, the first roller 503 on the positioning component 5 on the side subjected to the force is pushed to drive the first telescopic frame 502 to contract and compress the first spring 506, which also makes the inlet and outlet of the wire harness 6 have a close limit effect and can adapt to different thicknesses. When the wire harness is passed through and is subjected to pulling forces in different directions, the structure of the roller can also prevent the wire harness 6 from being squeezed and damaged by the edges; by setting a fixed column 7, and a spiral spring 8 is sleeved on the outside of the fixed column 7, the wire harness 6 is wound around the outside of the spiral spring 8, and when the wire harness 6 is subjected to pulling forces, the wire harness 6 will gradually tighten and exert a compressive force on the spiral spring 8, that is, the elastic force of the spiral spring 8 is utilized to further improve the buffering effect of the pulling force on the wire harness 6 and improve the anti-pulling performance; by setting a buffer component 10, the structure of the buffer component 10 is similar to that of the positioning component 5, except that the second telescopic frame 102 on the buffer component 10 has a longer compression stroke, which can increase the buffer length of the wire harness 6 inside the box body 1, increase the buffer length when subjected to pulling, and reset itself after the pulling force ends, further increasing the anti-pulling performance of the wire harness 6.

[0031] Among them, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wire harness with an anti-pull structure, comprising a box body (1) and a wire harness (6) inserted into the box body (1), characterized in that: One side end of the box body (1) is movably connected to a cover plate (2), and the inner walls of both ends of the box body (1) are respectively provided with an inlet positioning mechanism and an outlet positioning mechanism; The inlet positioning mechanism and the outlet positioning mechanism are both composed of two positioning components (5) symmetrically connected to the two inner walls of the box body (1); a fixing column (7) is fixedly arranged on the inner side of the inlet positioning mechanism in the box body (1); a spiral spring (8) is sleeved on the outer side of the fixing column (7); a buffer component (10) is connected to the inner side of the outlet positioning mechanism in the box body (1); and a positioning column (9) is arranged in the middle of the box body (1) between the fixing column (7) and the buffer component (10); the wire harness (6) passes through the inner side of the inlet positioning mechanism, the outer side of the spiral spring (8), the outer side of the positioning column (9), and the end of the buffer component (10) in sequence, and then flows out from the inner side of the outlet positioning mechanism.

2. The wire harness with an anti-pull structure according to claim 1, characterized in that: The cover plate (2) and the adjacent side ends of the box body (1) are connected via a hinge, and a clamping block (4) is provided on one side of the cover plate (2) away from the hinge, and a clamping slot (3) matching the position and structure of the clamping block (4) is provided on the side end of the box body (1).

3. The wire harness with an anti-pull structure according to claim 1, characterized in that: The positioning assembly (5) comprises a first fixed seat (501) fixedly connected to the inner wall of the box body (1); a first telescopic frame (502) is connected to the inner side of the end of the first fixed seat (501) close to the side where the wire harness (6) is located; a first roller (503) is movably installed on the inner side of the end of the first telescopic frame (502); one end of the first telescopic frame (502) is located inside the first fixed seat (501) and is fixedly connected to a first movable plate (504); a first movable cavity (505) is arranged inside the first fixed seat (501) corresponding to the outside of the first movable plate (504); and a first spring (506) is connected between the end of the first movable plate (504) and the inner wall of the first movable cavity (505).

4. The wire harness with an anti-pull structure according to claim 3, characterized in that: The end of the first fixed seat (501) is provided with a through hole for the telescopic movement of the first telescopic frame (502), the through hole being communicated with the interior of the first movable cavity (505), and the first roller (503) is movably connected to the inner side of the end of the first telescopic frame (502) via a rotating shaft.

5. The wire harness with an anti-pull structure according to claim 1, characterized in that: The buffer assembly (10) comprises a second fixed seat (101) fixedly connected to the inner wall of the box body (1); a second telescopic frame (102) is connected to the inner side of the end of the second fixed seat (101) close to the side where the wire harness (6) is located; a second roller (103) is movably installed on the inner side of the end of the second telescopic frame (102); one end of the second telescopic frame (102) is located inside the second fixed seat (101) and is fixedly connected to a second movable plate (104); a second movable cavity (105) is arranged inside the second fixed seat (101) corresponding to the outside of the second movable plate (104); and a second spring (106) is connected between the end of the second movable plate (104) and the inner wall of the second movable cavity (105).

6. The wire harness with an anti-pull structure according to claim 5, characterized in that: The end of the second fixed seat (101) is provided with a through hole for the telescopic movement of the second telescopic frame (102), the through hole being in communication with the interior of the second movable cavity (105), and the second roller (103) is movably connected to the inner side of the end of the second telescopic frame (102) via a rotating shaft.

7. The wire harness with an anti-pull structure according to claim 1, characterized in that: The ends of the fixing column (7) and the positioning column (9) are fixed to the inner wall of the box body (1) by means of hot melt adhesive.

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