A locking structure for a clock spring

Abstract

This utility model relates to the field of clock spring technology, specifically a locking structure for a clock spring, including a first protective shell, a second protective shell on one side of the first protective shell, and a locking component on the inner side of the first and second protective shells. A second limiting buckle is embedded inside the first limiting slot, and the second protective shell is fixed to the first protective shell via a first and second threaded bolt hole. The arrangement of the second and first protective shells protects the spiral cable. When the spiral cable is pulled out of the connecting switch or control unit, the first synchronous pulley rotates, driving the second synchronous pulley to rotate. When the spiral cable is long enough, a pressing pin is used to pass through the corresponding slot on the inner side of the second synchronous pulley and embed into the inner side of the third limiting slot, thus controlling the length of the spiral cable and preventing it from breaking when the steering wheel is turned.

Description

Technical Field

[0001] This utility model relates to the field of clock spring technology, and in particular to a locking structure for a clock spring. Background Technology

[0002] The clock spring is a spring (electrical signal rotary connector) in the automotive airbag system. It is a highly reliable circuit connection device between two relatively rotating parts. The clock spring is also known as a rotary connector, airbag clock spring, or spiral cable. Its main function is to connect the main airbag to the airbag wiring harness, or the steering wheel switch button to the control unit wiring harness. The clock spring is usually installed under the car steering wheel and is a current transmission device that provides a highly reliable connection between two relatively rotating parts. It is mainly composed of a flexible spiral cable, a housing that rotates relatively, a wiring harness (conductive lead wire), and connectors. During the left and right rotation of the steering wheel, the clock spring can ensure the normal circuit connection of electrical components such as the driver's front airbag and horn switch.

[0003] In the prior art, clock springs are used for the electrical rotational connection between the steering wheel airbag and its control system in automobiles. After the steering wheel is installed, if a problem is found in the vehicle and the steering wheel is removed for rework, repair, or maintenance, the locking structure has been removed, and the rotor mechanism can rotate freely. The internal spiral cable may deviate from the zero position. If the clock spring is reinstalled on the steering wheel in this state, it is very easy to cause inconsistent rotations to the left and right, which may break the internal spiral cable of the clock spring when the steering wheel is turned, resulting in loss of function and posing a serious driving safety hazard.

[0004] Therefore, we propose a locking structure for a clock spring. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a locking structure for a clock spring.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A locking structure for a clock spring includes a first protective shell, a second protective shell disposed on one side of the first protective shell, a locking component disposed on the inner side of the first and second protective shells, and a first limiting groove fixedly disposed on the side of the first protective shell near the second protective shell.

[0007] As a further embodiment of this utility model: a second limiting buckle is provided on the side of the second protective shell near the first limiting slot, and a first screw hole is fixedly provided on the side of the first protective shell near the second protective shell. The second limiting buckle is embedded in the inner side of the first limiting slot, and the second protective shell can be fixed to the first protective shell by means of the first and second screw holes of the bolt threads.

[0008] As a further embodiment of this utility model: a second screw hole is fixedly provided on the side of the second protective shell near the first screw hole, and a first synchronous pulley is provided inside the first and second protective shells. The arrangement of the second protective shell and the first protective shell can realize the protection of the spiral cable.

[0009] As a further embodiment of this utility model: a spiral cable is provided on the outer side of the first synchronous pulley near the second protective shell, and a spring is provided on the outer side of the first synchronous pulley near the first protective shell. When the spiral cable is pulled out to connect the switch or control unit, the first synchronous pulley rotates, driving the second synchronous pulley to rotate. When the length of the spiral cable is sufficient, the pin is pressed.

[0010] As a further solution of this utility model: one side of the first synchronous pulley is meshed with the second synchronous pulley, and the inner side of the second synchronous pulley is provided with a slot. When the length of the spiral cable is sufficient, the pin is pressed to make it pass through the corresponding slot on the inner side of the second synchronous pulley and be embedded in the inner side of the third limiting slot. This can realize the control of the length of the spiral cable and prevent the spiral cable from being pulled off when the steering wheel is turned.

[0011] As a further improvement of this utility model: the inner side of the second synchronous pulley is evenly distributed with slots, the inner side of the second protective shell is provided with a pin, and the inner side of the first protective shell is provided with a third limiting slot. When the pin is not pressed, the spring is wound up, driving the first synchronous pulley to rotate and winding up the spiral cable, preventing it from being connected to the switch or control unit without a determined length, which would cause the spiral cable to be pulled when the steering wheel is repeatedly turned.

[0012] Compared with the prior art, the present invention provides a locking structure for a clock spring, which has the following advantages: 1. This utility model, by installing a locking component, allows the first synchronous pulley to rotate when the spiral cable is pulled out to connect to a switch or control unit, thereby driving the second synchronous pulley to rotate. When the spiral cable is long enough, the pin is pressed to pass through the corresponding slot on the inner side of the second synchronous pulley and embed into the inner side of the third limiting slot. This allows control over the length of the spiral cable, preventing it from being pulled apart when the steering wheel is turned. When the pin is not pressed, the spring rewinds, driving the first synchronous pulley to rotate and rewinding the spiral cable, preventing it from being connected to the switch or control unit without a determined length, which would then cause the spiral cable to be pulled when the steering wheel is repeatedly turned.

[0013] 2. In this utility model, the second limiting buckle is embedded inside the first limiting slot, and the second protective shell can be fixed to the first protective shell through the first and second threaded holes of the bolt thread. The arrangement of the second protective shell and the first protective shell can realize the protection of the spiral cable.

[0014] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a clock spring locking structure proposed in this utility model; Figure 2 A three-dimensional structural diagram of a sealing assembly for a clock spring locking structure proposed in this utility model; Figure 3 This is a partial three-dimensional structural diagram of the sealing component proposed for the locking structure of a clock spring according to this utility model.

[0016] In the diagram: 1. First protective shell; 2. Second protective shell; 3. First limiting slot; 4. Second limiting buckle; 5. First screw hole; 6. Second screw hole; 7. First synchronous pulley; 8. Spiral cable; 9. Spring; 10. Second synchronous pulley; 11. Slot; 12. Pin; 13. Third limiting slot. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Example: A locking structure for a clock spring includes a first protective shell 1, a second protective shell 2 is provided on one side of the first protective shell 1, a locking component is provided on the inner side of the first protective shell 1 and the second protective shell 2, and a first limiting groove 3 is fixedly provided on the side of the first protective shell 1 near the second protective shell 2.

[0020] like Figures 1-3As shown, a second limiting buckle 4 is provided on the side of the second protective shell 2 near the first limiting slot 3. A first screw hole 5 is fixedly provided on the side of the first protective shell 1 near the second protective shell 2. A second screw hole 6 is fixedly provided on the side of the second protective shell 2 near the first screw hole 5. A first synchronous pulley 7 is provided inside the first protective shell 1 and the second protective shell 2. A spiral cable 8 is provided on the outer side of the first synchronous pulley 7 near the end of the second protective shell 2. A spring 9 is provided on the outer side of the first synchronous pulley 7 near the end of the first protective shell 1. One side of the first synchronous pulley 7 is engaged with the second synchronous pulley 10. A slot 11 is provided on the inner side of the second synchronous pulley 10. The slots 11 are evenly distributed on the inner side of the second synchronous pulley 10. A pin 12 is provided on the inner side of the second protective shell 2. A third limiting slot 13 is provided on the inner side of the first protective shell 1. When using the clock spring locking structure, the second limiting buckle 4 is embedded in the first limiting slot 3. Inside the first protective shell 1, the second protective shell 2 can be fixed to the first protective shell 1 through the first screw hole 5 and the second screw hole 6 of the bolt thread. The setting of the second protective shell 2 and the first protective shell 1 can realize the protection of the spiral cable 8. When the spiral cable 8 is pulled out to connect to the switch or control unit, the first synchronous pulley 7 rotates, driving the second synchronous pulley 10 to rotate. When the length of the spiral cable 8 is sufficient, the pin 12 is pressed so that it passes through the corresponding slot 11 inside the second synchronous pulley 10 and is embedded inside the third limit slot 13. This can realize the control of the length of the spiral cable 8 and prevent the spiral cable 8 from being pulled when the steering wheel is turned. When the pin 12 is not pressed, the spring 9 winds up, driving the first synchronous pulley 7 to rotate and wind up the spiral cable 8, preventing it from being connected to the switch or control unit without a determined length, which would cause the spiral cable 8 to be pulled when the steering wheel is turned repeatedly.

[0021] Working principle: When using the clock spring locking structure, the second limit buckle 4 is embedded inside the first limit slot 3, and the second protective shell 2 can be fixed to the first protective shell 1 through the first screw hole 5 and the second screw hole 6 of the bolt thread. The setting of the second protective shell 2 and the first protective shell 1 can realize the protection of the spiral cable 8. When the spiral cable 8 is pulled out to connect to the switch or control unit, the first synchronous pulley 7 rotates, driving the second synchronous pulley 10 to rotate. When the length of the spiral cable 8 is sufficient, the pin 12 is pressed, so that it passes through the corresponding slot 11 inside the second synchronous pulley 10 and is embedded inside the third limit slot 13. This can realize the control of the length of the spiral cable 8 and prevent the spiral cable 8 from being pulled when the steering wheel is turned. When the pin 12 is not pressed, the spring 9 winds up, driving the first synchronous pulley 7 to rotate and wind up the spiral cable 8, preventing it from being connected to the switch or control unit without a determined length, which would cause the spiral cable 8 to be pulled when the steering wheel is turned repeatedly.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A locking structure for a clock spring, comprising a first protective shell (1), characterized in that... A second protective shell (2) is provided on one side of the first protective shell (1). A locking component is provided on the inner side of the first protective shell (1) and the second protective shell (2). A first limiting slot (3) is fixedly provided on the side of the first protective shell (1) near the second protective shell (2).

2. The locking structure of a clock spring according to claim 1, characterized in that... The second protective shell (2) is provided with a second limiting buckle (4) on the side near the first limiting slot (3), and the first protective shell (1) is fixedly provided with a first screw hole (5) on the side near the second protective shell (2).

3. The locking structure of a clock spring according to claim 1, characterized in that... The second protective shell (2) has a second screw hole (6) fixedly provided on the side near the first screw hole (5), and the first protective shell (1) and the second protective shell (2) are provided with a first synchronous pulley (7).

4. The locking structure of a clock spring according to claim 3, characterized in that... A spiral cable (8) is provided on the outer side of the first synchronous pulley (7) near the second protective shell (2), and a spring (9) is provided on the outer side of the first synchronous pulley (7) near the first protective shell (1).

5. The locking structure of a clock spring according to claim 4, characterized in that... One side of the first synchronous pulley (7) is meshed with the second synchronous pulley (10), and the inner side of the second synchronous pulley (10) is provided with a slot (11).

6. The locking structure of a clock spring according to claim 5, characterized in that... The inner side of the second synchronous pulley (10) is evenly distributed with slots (11), the inner side of the second protective shell (2) is provided with a pin (12), and the inner side of the first protective shell (1) is provided with a third limiting slot (13).

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