Stay wire driving structure linked with backrest and having anti-falling function

Abstract

A stay wire driving structure linked with a backrest and having an anti-falling function comprises a step bolt, a rotating arm, a stay wire, a rotating disc and a fixed arm. Wherein the step bolt is provided with three steps, the rotating arm is installed on the thick step through the lining, the rotating disc is installed on the middle step, and the fixed arm is installed on the thin step; a guide groove and a stay wire fixing pin are arranged on the turntable, and one end of the stay wire is fixed on the stay wire fixing pin and then bypasses the guide groove to leave from the upper end of the turntable; two connecting lugs are arranged on the rotating disc, connecting positioning pins are arranged on the sides, close to the rotating arm, of the connecting lugs, and the connecting positioning pins are arranged in connecting positioning holes of the rotating arm; a clamping jaw is arranged on the side, away from the rotating arm, of the connecting lug and used for preventing the stay wire from disengaging from the guide groove. An avoiding groove is formed in the position, opposite to the clamping jaw, of the side, away from the rotating arm, of the rotating disc and used for assembly avoiding. The structure can be linked with the small backrest, and the problem that the stay wire is easily separated from the guide groove in the rotating process is solved on the premise of not increasing parts and not influencing stay wire assembly.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a cable-driven structure with anti-detachment function linked to the backrest. Background Technology

[0002] Current car seats typically use cable assemblies to drive certain components, requiring external force to pull the cable. Currently, there is a lack of a cable-driven structure that is linked to the backrest; furthermore, existing cable assemblies are prone to cable detachment due to delayed cable retraction during repeated rotation of the rotating wheel. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a pull-cord drive structure with anti-detachment function that is linked to the backrest. The pull-cord drive structure is fixed between the large backrest and the small backrest. When the small backrest rotates, it is linked with the small backrest, and the pull cord is tightened or loosened. At this time, a certain component (such as the locking rod assembly on the backrest) can be driven by the pull cord. In addition, this structure solves the problem that the pull cord is easy to fall out of the guide groove during rotation without adding parts or affecting the assembly of the pull cord.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cable-driven structure with anti-detachment function linked to a backrest includes a stepped bolt, a rotating arm, a cable, a turntable, and a fixed arm. The stepped bolt has three steps: a coarse step, a medium step, and a fine step. The rotating arm is mounted on the coarse step via a bushing, the turntable is mounted on the medium step, and the fixed arm is mounted on the fine step, with its ends locked by nuts. The turntable has a guide groove, and a cable fixing pin is located near the bottom front end of the turntable. One end of the cable is fixed to the cable fixing pin, then passes around the guide groove and exits from the top of the turntable, connecting with the drive arm. Moving parts connection; the turntable has two lugs on the side near the rotating arm, one at the upper end and the other at the lower end. Each lug has a connecting positioning pin on the side adjacent to the rotating arm. The rotating arm has a connecting positioning hole opposite the connecting positioning pin, and the connecting positioning pin is located within the connecting positioning hole. Each lug has a pawl on the side away from the rotating arm, which prevents the pull wire from coming out of the guide groove. The turntable has a clearance groove on the side away from the rotating arm, opposite the pawl, which is used for assembly clearance.

[0006] As a preferred embodiment of this invention, the end of the claw extends beyond the center line of the pull wire.

[0007] As a preferred embodiment of this invention, the rotating arm is fixed to the rotatable small backrest by bolts, and the fixed arm is fixed to the large backrest by bolts.

[0008] As a preferred embodiment of this invention, the component to be driven includes a locking rod assembly on the backrest.

[0009] Advantages and beneficial effects of this utility model:

[0010] (1) The pull-wire drive structure provided by this utility model is fixed between the large backrest and the small backrest. When the small backrest rotates, it is linked with the small backrest, and the pull wire is tightened or loosened. At this time, a certain component (such as the locking rod assembly on the backrest) can be driven by the pull wire. In addition, this structure solves the problem that the pull wire is easy to come out of the guide groove during rotation without adding parts or affecting the assembly of the pull wire.

[0011] (2) The pull-wire drive structure provided by this utility model has low cost, can be linked with a small backrest, and can be repeatedly disassembled and installed; in addition, the design of the claw end extending beyond the center line of the pull wire can further improve the stability of the structure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of the pull-wire drive structure of this utility model;

[0014] Figure 2 This is a side view of the pull-wire drive structure of this utility model;

[0015] Figure 3 This is an exploded view of the wire-driven structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the turntable of this utility model;

[0017] Figure 5 This is a schematic diagram of the turntable in the rotating state of this utility model;

[0018] Figure 6 This is a schematic diagram of the various components of this utility model on the stepped bolt;

[0019] Reference numerals: Step bolt 1, Rotating arm 2, Pull wire 3, Turntable 4, Fixed arm 5, Coarse step 101, Medium step 102, Fine step 103, Connecting positioning hole 201, Pull wire fixing pin 401, Lug 402, Clearing groove 403, Connecting positioning pin 4021, Claw 4022. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figures 1 to 6 As shown, this embodiment provides a pull-cord drive structure with anti-detachment function linked to the backrest, including a stepped bolt 1, a rotating arm 2, a pull cord 3, a turntable 4, and a fixing arm 5. The stepped bolt 1 has three steps: a coarse step 101, a medium step 102, and a fine step 103. The rotating arm 2 is mounted on the coarse step 101 via a bushing and is bolted to the rotatable small backrest. The turntable 4 is mounted on the medium step 102. The fixing arm 5 is mounted on the fine step 103, with its end locked by a nut, and is bolted to the large backrest. The turntable 4 has a guide groove (unmarked), and a pull cord fixing pin 401 is provided near the bottom front end of the turntable 4. One end of the pull cord 3 is fixed to the pull cord fixing pin 401, and then passes around the guide groove from the top of the turntable. The turntable 4 is connected to the component to be driven, which includes the locking rod assembly on the backrest. The turntable 4 has two lugs 402 on the side near the rotating arm 2. One lug 402 is located at the upper end of the turntable 4, and the other at the lower end. Each lug 402 has a connecting positioning pin 4021 on the side adjacent to the rotating arm 2. The rotating arm 2 has a connecting positioning hole 201 opposite to the connecting positioning pin 4021, and the connecting positioning pin 4021 is located within the connecting positioning hole 201. Each lug 402 has a claw 4022 on the side away from the rotating arm 2, which is used to prevent the pull cable 3 from coming out of the guide groove. The turntable 4 has a clearance groove 403 on the side away from the rotating arm 2, opposite to the claw 4022, which is used for assembly clearance.

[0023] In this embodiment, the end of the claw 4022 extends beyond the center line of the pull wire 3, which can further improve the stability of the structure.

[0024] The above describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A pull-cord drive structure with anti-slip function linked to the backrest, characterized in that, The device includes a stepped bolt, a rotating arm, a pull wire, a turntable, and a fixed arm. The stepped bolt has three steps: a coarse step, a medium step, and a fine step. The rotating arm is mounted on the coarse step via a bushing, the turntable is mounted on the medium step, and the fixed arm is mounted on the fine step, with the ends locked by nuts. The turntable has a guide groove, and a pull wire fixing pin is located near the bottom front end. One end of the pull wire is fixed to the pull wire fixing pin, then passes around the guide groove and exits from the top of the turntable to connect with the component to be driven. The turntable has two lugs on the side near the rotating arm, one at the top and the other at the bottom. A connecting positioning pin is located on the side of each lug adjacent to the rotating arm. The rotating arm has a connecting positioning hole opposite to the connecting positioning pin, and the connecting positioning pin is located within the connecting positioning hole. A claw is located on the side of each lug away from the rotating arm to prevent the pull wire from detaching from the guide groove. A clearance groove is located on the side of the turntable away from the rotating arm, opposite to the claw, for assembly clearance.

2. The pull-cord drive structure with anti-slip function linked to the backrest as described in claim 1, characterized in that, The end of the claw extends beyond the center line of the pull line.

3. The pull-cord drive structure with anti-slip function linked to the backrest as described in claim 1, characterized in that, The rotating arm is fixed to the small, rotatable backrest by bolts, and the fixed arm is fixed to the large backrest by bolts.

4. The pull-cord drive structure with anti-slip function linked to the backrest as described in claim 1, characterized in that, The component to be driven includes the locking rod assembly on the backrest.

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