Anti-following-rotation structure for conductive wire harness terminal of steering column

Abstract

The utility model relates to the technical field of wire harness terminals, in particular to an anti-following-rotation structure of a conductive wire harness terminal of a steering column, which comprises a conductive wire harness, a wire harness terminal, an energy-absorbing steel belt and a locking nut, and the wire harness terminal comprises a terminal body, a limiting structure, a first crimping structure and a second crimping structure. Compared with the prior art, the limiting structure is additionally arranged on the side edge of the wiring harness terminal, the limiting structure abuts against the side edge of the energy absorption steel belt, tangential force generated in the tightening process of the locking nut is offset, and the following rotation problem of the wiring harness terminal is solved; the tail part of the wire harness terminal is in welded connection with the conductive wire harness, and the conductive wire harness is coated with the two crimping structures, so that the pull-out force and the connection strength of the conductive wire harness are improved, and the conductive wire harness is prevented from being pulled apart. The device has the advantages of simple structure, low cost and simplicity in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of wire harness terminals, in particular to an anti-rotation structure for a conductive wire harness terminal of a steering column. Background Art

[0002] At present, the wiring harness terminal of the steering column is welded to the conductive harness. When the steering column is installed on the vehicle, a clockwise tangential force is generated during the process of tightening the locking nut at the upper mounting point, causing the wiring harness terminal to rotate with the locking nut. The rotation of the wiring harness terminal may cause the conductive harness to be torn off.

[0003] For further analysis, we grasped the target design requirements. The inner groove of the trapezoidal iron block of the steering column and the bracket are clearance-matched, and there is a glue injection process between the two, which may cause poor contact. Therefore, a conductive harness is added to the design to ensure the conductivity of the steering column and avoid malfunction. If the conductive harness is torn during the installation process, it will cause product malfunctions and the horn will not sound.

[0004] In order to solve the above problems, several optimization solutions were tried: one is to thicken the conductive wire harness from 0.5 square millimeters to 0.75 square millimeters, but it cannot solve the problem of the wire harness terminal rotating during the tightening of the locking nut; the second is to strengthen the tail of the conductive wire harness and the wire harness terminal after crimping to increase the strength of the connection, but the friction coefficient between the wire harness terminal and the end of the locking nut is variable, and the friction torque generated is fluctuating. Therefore, this solution has the defect of insufficient stability, and the phenomenon of wire harness terminal rotating still exists.

[0005] Therefore, it is necessary to design a steering column conductive wiring harness terminal anti-rotation structure, which can not only solve the problem of wiring harness terminal rotation during the tightening of the locking nut, but also improve the connection strength between the conductive wiring harness and the wiring harness terminal to prevent the conductive wiring harness from being torn off. Summary of the invention

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a steering column conductive wiring harness terminal anti-rotation structure, which can not only solve the problem of the wiring harness terminal rotating during the tightening of the locking nut, but also improve the connection strength between the conductive wiring harness and the wiring harness terminal to avoid the conductive wiring harness being torn off.

[0007] In order to achieve the above-mentioned purpose, the utility model is a steering column conductive wiring harness terminal anti-rotation structure, including a conductive wiring harness, a wiring harness terminal, an energy-absorbing steel belt, and a locking nut. The wiring harness terminal includes a terminal body, a limiting structure, a crimping structure one, and a crimping structure two. The head of the terminal body is fastened with a locking nut, and the side of the tail of the terminal body is provided with a limiting structure extending downward. The tail of the terminal body is located above the energy-absorbing steel belt, and the limiting structure is against the side of the energy-absorbing steel belt. The tail of the terminal body is welded and fixed to the conductive wiring harness, and the tail of the terminal body is provided with a crimping structure one and a crimping structure two. The crimping structure one clamps the core wire of the conductive wiring harness, and the crimping structure two clamps the insulating layer of the conductive wiring harness.

[0008] The limiting structure is a limiting piece bent downward along the edge of the terminal body.

[0009] The length of the limiting piece is 6.5 mm and the width is 2 mm.

[0010] The crimping structure 1 and the crimping structure 2 are connecting pieces extending upward along the edge of the terminal body.

[0011] The width of the first crimping structure is greater than the width of the second crimping structure.

[0012] An installation gap is provided between the first crimping structure and the second crimping structure.

[0013] The head of the terminal body is installed on the fasteners of the U-shaped bracket and the instrument crossbeam.

[0014] Compared with the prior art, the utility model adds a limiting structure on the side of the wiring harness terminal, which abuts against the side of the energy-absorbing steel belt to offset the tangential force generated during the tightening of the locking nut, thereby solving the problem of the wiring harness terminal following the rotation; the tail of the wiring harness terminal is welded and connected to the conductive wire harness, and two crimping structures are used to cover the conductive wire harness, thereby improving the pull-out force and connection strength of the conductive wire harness, and preventing the conductive wire harness from being torn off. The utility model has the advantages of simple structure, low cost and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is an axonometric view of the wiring harness terminal of the utility model.

[0017] Figure 3 It is a schematic diagram of the connection between the wiring harness terminal and the conductive wiring harness of the utility model. DETAILED DESCRIPTION

[0018] The utility model is now further described with reference to the accompanying drawings.

[0019] See also Figure 1, Figure 2 and Figure 3 The utility model is a steering column conductive wire harness terminal anti-rotation structure, including a conductive wire harness, a wire harness terminal, an energy absorbing steel belt, and a locking nut. The wire harness terminal 1 includes a terminal body 11, a limiting structure 12, a crimping structure 13, and a crimping structure 2 14. The head of the terminal body 11 is fastened with a locking nut 4, and the head of the terminal body 11 is installed on the fasteners of the U-shaped bracket 6 and the instrument cross beam 5. The side of the tail of the terminal body 11 is provided with a limiting structure 12 extending downward, the tail of the terminal body 11 is located above the energy absorbing steel belt 3, the limiting structure 12 is against the side of the energy absorbing steel belt 3, the tail of the terminal body 11 is welded and fixed to the conductive wire harness 2, and the tail of the terminal body 11 is provided with a crimping structure 13 and a crimping structure 2 14. The crimping structure 1 13 clamps the core wire of the conductive wire harness 2, and the crimping structure 2 14 clamps the insulating layer of the conductive wire harness 2.

[0020] The limiting structure 12 is a limiting piece bent downward along the edge of the terminal body 11. Preferably, the limiting piece has a length of 6.5 mm and a width of 2 mm.

[0021] The first crimping structure 13 and the second crimping structure 14 are connecting pieces extending upward along the edge of the terminal body 11 .

[0022] To ensure conductivity, the width of crimping structure 13 is greater than the width of crimping structure 2 14 , that is, the size of the core wire of the crimped conductive wire bundle 2 is greater than the size of the insulating layer of the crimped conductive wire bundle 2 , so that the core wire of the conductive wire bundle 2 remains fully connected to the terminal body 11 .

[0023] In order to prevent the first crimping structure 13 and the second crimping structure 14 from interfering with each other during the bending process, an installation gap is provided between the first crimping structure 13 and the second crimping structure 14 .

[0024] The wiring harness terminal 1 only adds a bending and pressing process, which has little change on the existing process and has high feasibility.

[0025] When the utility model is installed on the vehicle instrument cross beam 5, the limiting structure 12 presses against the side of the energy-absorbing steel belt 3. When the locking nut 4 is tightened, the tangential force generated during the tightening process is offset by the limiting structure 12 and the energy-absorbing steel belt 3, so that the wiring harness terminal 1 will not rotate with the locking nut 4 and remain in the designed position.

[0026] The crimping structure 13 and the crimping structure 2 14 further press the conductive wire harness 2 welded on the terminal body 11, thereby increasing the connection strength between the conductive wire harness 2 and the wire harness terminal 1 and preventing the conductive wire harness 2 from breaking at this position.

[0027] The utility model adds a limiting structure to the side of the wiring harness terminal, which abuts against the side of the energy-absorbing steel belt to offset the tangential force generated during the tightening of the locking nut, thereby solving the problem of the wiring harness terminal following the rotation; the tail of the wiring harness terminal is welded and connected to the conductive wire harness, and two crimping structures are used to cover the conductive wire harness, thereby improving the pull-out force and connection strength of the conductive wire harness, and preventing the conductive wire harness from being torn off. The utility model has the advantages of simple structure, low cost and simple operation.

Claims

1. A steering column conductive harness terminal anti-rotation structure, comprising a conductive harness, a harness terminal, an energy-absorbing steel belt, and a locking nut, characterized in that: The wiring harness terminal (1) comprises a terminal body (11), a limiting structure (12), a first crimping structure (13), and a second crimping structure (14). The head of the terminal body (11) is fastened by a locking nut (4). The side edge of the tail of the terminal body (11) is provided with a limiting structure (12) extending downward. The tail of the terminal body (11) is located above an energy-absorbing steel strip (3). The limiting structure (12) abuts against the side edge of the energy-absorbing steel strip (3). The tail of the terminal body (11) is welded and fixed to the conductive wiring harness (2). The tail of the terminal body (11) is provided with a first crimping structure (13) and a second crimping structure (14). The first crimping structure (13) clamps the core wire of the conductive wiring harness (2), and the second crimping structure (14) clamps the insulating layer of the conductive wiring harness (2).

2. The steering column conductive harness terminal anti-rotation structure according to claim 1, characterized in that: The limiting structure (12) is a limiting piece bent downward along the edge of the terminal body (11).

3. The steering column conductive harness terminal anti-rotation structure according to claim 2, characterized in that: The length of the limiting piece is 6.5 mm and the width is 2 mm.

4. The steering column conductive harness terminal anti-rotation structure according to claim 1, characterized in that: The crimping structure one (13) and the crimping structure two (14) are connecting pieces extending upwards along the edge of the terminal body (11).

5. The steering column conductive harness terminal anti-rotation structure according to claim 1, characterized in that: The width of the crimping structure 1 (13) is greater than the width of the crimping structure 2 (14).

6. The steering column conductive harness terminal anti-rotation structure according to claim 1, characterized in that: An installation gap is provided between the first crimping structure (13) and the second crimping structure (14).

7. The steering column conductive harness terminal anti-rotation structure according to claim 1, characterized in that: The head of the terminal body (11) is mounted on the fasteners of the U-shaped bracket (6) and the instrument crossbeam (5).

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