Two-way electric lumbar support

Abstract

The present invention discloses a two-way electric lumbar support, which comprises a wire mesh curtain and a driver. It is characterized in that: the driver includes a mounting frame, a pulley, a slider, a lead screw, wire rope A, wire rope B and a power mechanism. The mounting frame is mounted on the longitudinal wire B. The pulley and the slider are distributed left and right on the mounting frame, and the pulley is rotatably arranged on the mounting frame. The slider is transversely movable on the mounting frame and is driven by the lead screw in a threaded manner. The lead screw is driven by the power mechanism. The power mechanism is mounted on the right side of the mounting frame or the longitudinal wire B through a connecting bracket. One end of the wire rope A is connected with a hook A, and the other end of the wire rope A sequentially passes through a buckle, the mounting frame and is connected with the slider. The buckle is mounted on the longitudinal wire A. One end of the wire rope B is connected with a hook B, and the other end of the wire rope B sequentially passes through the connecting bracket, the slider, and after being redirected by the pulley, is connected with the slider. The transmission of the present invention is stable and effectively reduces noise.

Description

Technical Field

[0001] The present invention relates to an improved invention in the field of automotive parts, and particularly to an improved invention of a two-way electric lumbar support. Background Art

[0002] The lumbar support of an automotive seat can relieve the discomfort of the waist during driving and riding, and improve the riding experience. For different passengers and different needs of the same passenger, it is required that the seat lumbar support can be adjusted to the required height at any time. In the existing electric lumbar support of automotive seats, the left cable and the right cable for supporting the wire mesh curtain are arranged left and right. Hooks are connected to the outer ends of the left cable and the right cable, and the inner ends are respectively driven and adjusted for tension by a left slider and a right slider to adjust the support height of the wire mesh curtain. Since the left slider and the right slider are driven by a lead screw, noise is easily generated during the movement of the two groups of sliders, and the length of the lead screw needs to meet the movement of the two groups of sliders. The longer the lead screw, the worse the transmission stability. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a two-way electric lumbar support with stable transmission and low noise.

[0004] To solve the above technical problem, the present invention is implemented by adopting the following technical solution: This two-way electric lumbar support includes a wire mesh curtain and a driver. The wire mesh curtain includes longitudinal wire A and longitudinal wire B distributed left and right. It is characterized in that: the driver includes a mounting frame, a pulley, a slider, a lead screw, wire rope A, wire rope B and a power mechanism. The mounting frame is mounted on longitudinal wire B. The pulley and the slider are distributed left and right on the mounting frame, and the pulley is rotatably arranged on the mounting frame. The slider is horizontally movable on the mounting frame and is driven by a lead screw in a threaded manner. The lead screw is driven by a power mechanism. The power mechanism is mounted on the right side of the mounting frame or on longitudinal wire B through a connecting bracket. One end of wire rope A is connected with hook A, and the other end of wire rope A sequentially passes through a buckle, the mounting frame and is connected with the slider. The buckle is mounted on longitudinal wire A. One end of wire rope B is connected with hook B, and the other end of wire rope B sequentially passes through the connecting bracket, the slider, and is connected with the slider after being reversed by the pulley.

[0005] The other end of wire rope A and the other end of wire rope B are bent and hung on the wire groove on the slider in a misaligned and facing manner.

[0006] A wire sleeve is also sleeved on wire rope B, and the two ends of the wire sleeve are respectively connected with the buckle and the mounting frame.

[0007] The slider is provided with a chute, and the mounting frame is provided with a guide rail, and the chute is matched with the guide rail.

[0008] The power mechanism includes a motor and a speed reducer. The motor is connected to the speed reducer, and the output shaft of the speed reducer is connected to the lead screw.

[0009] The pulley is provided with a V-shaped open wire rope guiding groove.

[0010] The beneficial effect of the present invention is that the improved two-way electric lumbar support uses a pulley to reverse the wire rope B, enabling a single slider to drive both wire rope A and wire rope B simultaneously, reducing the number of sliders, reducing the noise during the transmission between the slider and the lead screw, and at the same time reducing the stroke length of the lead screw, thereby improving the transmission stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 is a schematic structural diagram of the present invention.

[0013] Figure 2 is a structural diagram of the slider of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The drawings show the structure of the present invention, and its related details will be further described below with reference to the drawings. In this embodiment, the two-way electric lumbar support includes a wire mesh curtain 1 and a driver. The wire mesh curtain 1 includes longitudinal wires A2 and longitudinal wires B3 distributed left and right. The driver includes a mounting bracket 4, a pulley 5, a slider 6, a lead screw 7, a wire rope A8, a wire rope B9, and a power mechanism 10. The right end of the mounting bracket 4 is installed on the longitudinal wire B3 through a snap structure. The pulley 5 and the slider 6 are distributed left and right on the mounting bracket 4, and the pulley 5 is rotatably arranged on the mounting bracket 4 through a pin shaft. The slider 6 is horizontally movable on the mounting bracket 4, and the slider 6 is driven by a screw thread of the lead screw 7. The lead screw 7 is driven by the power mechanism 10. The power mechanism 10 is installed on the right side of the mounting bracket 4 or the longitudinal wire B3 through a connecting bracket 11. One end of the wire rope A8 is connected with a hook A12, and the other end of the wire rope A8 sequentially passes through a buckle 13, a wire drawing sleeve 14, the mounting bracket 4 and is connected with the slider 6. The buckle 13 is installed on the longitudinal wire A2, and the two ends of the wire drawing sleeve 14 are respectively connected with the buckle 13 and the mounting bracket 4. One end of the wire rope B9 is connected with a hook B15, and the other end of the wire rope B9 sequentially passes through the connecting bracket 11, the slider 6, and after being reversed by the pulley 5, is connected with the slider 6. A wire rope guiding hole is provided on the corresponding connecting bracket 1.

[0015] As a specific implementation of further improvement, the other end of the wire rope A8 and the other end of the wire rope B9 are bent and hung in the wire groove on the slider 6 in a misaligned manner facing each other, that is, the other end of the wire rope A8 and the other end of the wire rope B9 enter the slider 6 in parallel with each other and bend towards the center of the slider 6, and the bent parts are misaligned with each other. The above arrangement of the wire ropes maximizes the space utilization of the slider 6 and ensures the miniaturization of the volume of the slider 6.

[0016] As a specific implementation of further improvement, a wire pulling sleeve 14 is also sleeved on the wire rope B9, and both ends of the wire pulling sleeve 14 are respectively connected to the buckle 13 and the mounting bracket 4, so that the buckle 13, the wire pulling sleeve 14, the mounting bracket 4 and the wire mesh curtain 1 form an integral body, enhancing the structural stability.

[0017] As a specific implementation of further improvement, a chute is provided on the slider 6, and a guide rail is provided on the mounting bracket 4. The chute is matched with the guide rail to realize the lateral movement of the slider 6 on the mounting bracket 4.

[0018] As a specific implementation of further improvement, the power mechanism 10 includes a motor and a reduction box. The motor is connected to the reduction box, and the output shaft of the reduction box is connected to the lead screw 7.

[0019] As a specific implementation of further improvement, a V-shaped open wire rope guide groove is provided on the pulley 5 to make the wire rope commutation and unwinding more stable.

[0020] When the present invention works, when the motor rotates, it is decelerated by the reduction box. The output shaft of the reduction box drives the lead screw 7 to rotate. The lead screw 7 drives the slider 6 to linearly move along the guide rail of the mounting bracket 4 through the thread. While the slider 6 moves, it pulls the wire rope A8 and the wire rope B9, increasing or decreasing the distance between the hooks at both ends of the wire rope A8 and the wire rope B9; therefore, when the hook A12 and the hook B15 are hung on the seat frame and the wire rope distance between the hook A12 and the hook B15 changes, the height of the wire mesh curtain 1 can be lifted, so that this structure plays a role in lumbar support in the seat frame.

[0021] In summary, the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Two-way electric lumbar support, including a wire mesh curtain and a driver, the wire mesh curtain includes longitudinal wire A and longitudinal wire B distributed left and right, characterized in that: The driver includes a mounting bracket, a pulley, a slider, a lead screw, wire rope A, wire rope B, and a power mechanism. The mounting bracket is mounted on the longitudinal wire B. The pulley and the slider are distributed left and right on the mounting bracket, and the pulley is rotatably arranged on the mounting bracket. The slider is horizontally movable on the mounting bracket and is driven by a lead screw in a threaded manner. The lead screw is driven by the power mechanism. The power mechanism is mounted on the right side of the mounting bracket or on the longitudinal wire B through a connecting bracket. One end of wire rope A is connected with a hook A, and the other end of wire rope A sequentially passes through a buckle, the mounting bracket and is connected with the slider. The buckle is mounted on the longitudinal wire A. One end of wire rope B is connected with a hook B, and the other end of wire rope B sequentially passes through the connecting bracket and the slider, and is connected with the slider after being redirected by the pulley. The other ends of wire rope A and wire rope B are bent and hung on the wire groove on the slider in a mutually offset and facing manner, that is, the other ends of wire rope A and wire rope B enter the slider in parallel and bend towards the center of the slider, and the bent parts are mutually offset.

2. The two-way electric lumbar support according to claim 1, characterized in that: A wire sleeve is also sleeved on wire rope B, and the two ends of the wire sleeve are respectively connected with the buckle and the mounting bracket.

3. The two-way electric lumbar support according to claim 1, characterized in that: A chute is provided on the slider, and a guide rail is provided on the mounting bracket. The chute is matched with the guide rail.

4. The two-way electric lumbar support according to claim 1, characterized in that: The power mechanism includes a motor and a reduction gearbox. The motor is connected with the reduction gearbox, and the output shaft of the reduction gearbox is connected with the lead screw.

5. The two-way electric lumbar support according to claim 1, characterized in that: A V-shaped open wire rope guiding groove is provided on the pulley.

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