Wire harness positioning device for automobile wire harness

Abstract

The utility model discloses a kind of harness positioning devices for automobile harness, including fixed plate, multiple clamping mechanisms for clamping harness are equipped on the fixed plate, the clamping mechanism includes two fixed blocks symmetrically arranged on the surface of fixed plate, the inner side of two fixed blocks is slidably provided with two clamping blocks for clamping the harness along length direction, reset spring is respectively connected between two clamping blocks and two fixed blocks;The utility model when harness is accidentally pulled, under the action of static friction, clamping block will move along with harness, via the guidance of conical groove, so that clamping block clamps harness by clamping groove, to avoid the joint end of harness directly stressed, prevent harness from being accidentally broken.And in general, clamping block does not have clamping force, prevent harness from being clamped for a long time and deformed.

Description

Technical Field

[0001] This utility model relates to the field of wire harness fixing technology, specifically to a wire harness positioning device for automotive wire harnesses. Background Technology

[0002] As the level of automotive electronics continues to increase, the number and complexity of automotive wiring harnesses are also increasing, placing higher demands on the fixing and protection of wiring harnesses.

[0003] Existing devices typically employ a fixed clamping force in their clamping mechanisms. For example, CN209881300U discloses an automotive wiring harness sleeve device, which has multiple clamping mechanisms inside the sleeve consisting of clamping springs, clamping blocks, and limiting grooves, enabling the classification, arrangement, clamping, and fixing of the wiring harness.

[0004] However, in order to prevent the wire harness from loosening when stretched, the existing fixing mechanism usually has a relatively large clamping force on the wire harness. This can cause the insulation sheath of the wire harness to be permanently deformed or even damaged under long-term, continuous pressure. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device that can provide gentle fixation of the wire harness under normal conditions, and can instantly enhance the clamping force when under tension.

[0006] To solve the above problems, this utility model provides the following technical solution: a wiring harness positioning device for automotive wiring harnesses, including a fixing plate, the fixing plate being provided with a plurality of clamping mechanisms for clamping the wiring harness, the clamping mechanism including two fixing blocks symmetrically arranged on the surface of the fixing plate, two clamping blocks for clamping the wiring harness being slidably arranged on the inner side of the two fixing blocks along the length direction, and a return spring being connected between the two clamping blocks and the two fixing blocks respectively; a tapered surface is provided on the outer side of the end of the clamping block away from the wiring harness connector, and a tapered groove is provided on the inner side of the fixing block to cooperate with the tapered surface; when the end of the wiring harness away from the connector is subjected to instantaneous tension, the two clamping blocks move towards the tapered surface under the action of the static friction of the wiring harness, and are guided by the tapered groove to bring the two clamping blocks closer to each other to clamp the wiring harness.

[0007] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides multiple clamping mechanisms on the fixed plate to clamp the wire harness near the connector end, thereby avoiding direct force on the connector end and effectively preventing the wire harness from being accidentally torn off.

[0008] 2. When the wiring harness is accidentally pulled, the clamping block moves with the harness under the action of static friction. Guided by the conical groove, the clamping block clamps the harness, thus preventing the connector end of the harness from being directly stressed and preventing the harness from being accidentally torn. Under normal circumstances, the clamping block does not have clamping force, preventing the harness from deforming due to prolonged clamping. Compared with the prior art, this utility model has a simple structure, is easy to use, and can effectively protect the automotive wiring harness connector and extend the service life of the wiring harness. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0010] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0011] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0012] In the diagram: 1. Wire harness; 2. Fixing plate; 3. Fixing hole; 4. Fixing block; 5. Clamping block; 6. Slide groove; 7. Return spring; 8. Slider; 9. Anti-slip pad; 10. Conical groove; 11. Conical surface. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Example 1 A wiring harness positioning device for automotive wiring harnesses includes a fixing plate 2, which has multiple clamping mechanisms for clamping the wiring harness 1, and a fixing hole 3 is provided through the fixing plate 2. By passing fasteners such as bolts through the fixing hole 3, the entire positioning device can be installed in a suitable position on the vehicle body.

[0015] Each clamping mechanism includes two fixing blocks 4 symmetrically arranged on the surface of the fixing plate 2. The fixing blocks 4 can be fixed to the surface of the fixing plate 2 by bolt connection or welding. The inner sides of the two fixing blocks 4 are provided with two clamping blocks 5 for clamping the wire harness 1 along the length direction. The inner wall of the clamping block 5 is fixedly provided with an anti-slip pad 9.

[0016] Furthermore, a return spring 7 is connected between each of the two clamping blocks 5 and the two fixing blocks 4. The outer side of the clamping block 5, away from the connector of the wire harness 1, has a tapered surface 11, and the inner side of the fixing block 4 has a tapered groove 10 that mates with the tapered surface 11. Under normal circumstances, when the wire harness 1 is not pulled, the elastic force of the return spring 7 keeps the clamping block 5 in its initial position. At this time, the clamping block 5 contacts the wire harness 1 through the anti-slip pad 9, but the clamping force is very small and will not compress the wire harness 1. When the end of the wire harness 1 away from the connector is subjected to an unexpected pulling force, the wire harness 1 tends to move relative to the clamping block 5. Due to the presence of the anti-slip pad 9, a large static friction force is generated between the wire harness 1 and the clamping block 5. This static friction force overcomes the weak elastic force of the return spring 7, driving the two clamping blocks 5 to move together along the groove 6 in the direction of the pulling force.

[0017] As the clamping block 5 moves, its outer conical surface 11 gradually enters the conical groove 10 inside the fixing block 4. Due to the guiding effect of the inclined surface of the conical groove 10, the clamping block 5 is forced to move radially toward the center of the wire harness 1 while moving axially, thereby bringing the two clamping blocks 5 closer together and generating a rapidly increasing and powerful clamping force on the wire harness 1, thus reliably locking the wire harness 1 and preventing it from being pulled out, effectively protecting the connector part of the wire harness 1 from damage. When the external force disappears, under the rebound force of the return spring 7, the clamping block 5 is pushed back to the initial position, the conical surface 11 disengages from the conical groove 10, the clamping block 5 is radially released, the clamping force on the wire harness 1 is released, and it returns to normal.

[0018] In one specific embodiment of this invention, the inner wall of the fixing block 4 is provided with a groove 6, and the outer side of the clamping block 5 is integrally formed with a slider 8. The slider 8 can slide along the length direction of the groove 6 to guide the sliding of the clamping block 5 along the length of the wire harness 1. The slider 8 can also slide slightly in the width direction of the groove 6, providing the necessary space for the clamping block 5 to move closer or further apart in the radial direction of the wire harness 1 when needed. It should be noted that one end of the return spring 7 can be fixedly connected to one end of the groove 6, and the other end of the return spring 7 can be connected to the slider 8 through dynamic contact. When the slider 8 moves laterally due to the clamping action, the end of the return spring 7 can adapt through its own elastic deformation.

[0019] In summary, the wire harness positioning device of this utility model can firmly clamp the part of the wire harness 1 with the insulating outer layer when the wire harness 1 is subjected to tension, preventing the joint of the wire harness 1 from being pulled off, while under normal conditions it will not put too much pressure on the wire harness 1.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wiring harness positioning device for automotive wiring harnesses, characterized in that: The device includes a fixing plate (2), which has multiple clamping mechanisms for clamping the wire harness (1). The clamping mechanism includes two fixing blocks (4) symmetrically arranged on the surface of the fixing plate (2). Two clamping blocks (5) for clamping the wire harness (1) are slidably arranged on the inner side of the two fixing blocks (4) along the length direction. A return spring (7) is connected between the two clamping blocks (5) and the two fixing blocks (4). A tapered surface (11) is provided on the outer side of the end of the clamping block (5) away from the connector of the wire harness (1). A tapered groove (10) that cooperates with the tapered surface (11) is provided on the inner side of the fixing block (4). When the end of the wire harness (1) away from the connector is subjected to instantaneous tension, the two clamping blocks (5) move toward the tapered surface (11) under the action of the static friction of the wire harness (1), and are guided by the tapered groove (10) to bring the two clamping blocks (5) closer to each other to clamp the wire harness (1).

2. The wiring harness positioning device for automotive wiring harnesses according to claim 1, characterized in that: The fixing plate (2) has a through hole (3).

3. The wiring harness positioning device for automotive wiring harnesses according to claim 1, characterized in that: The inner wall of the fixing block (4) is provided with a sliding groove (6), and the outer side of the clamping block (5) is integrally formed with a slider (8) that slides with the sliding groove (6). The reset spring (7) is connected between the sliding groove (6) and the slider (8).

4. The wiring harness positioning device for automotive wiring harnesses according to claim 1, characterized in that: The inner wall of the clamping block (5) is fixedly provided with an anti-slip pad (9).

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