Seat waistrest elastic buffer reinforcing structure

Abstract

The utility model relates to the technical field of seat waist rest, disclose a seat waist rest elasticity buffer reinforcing structure, including installation component, installation component includes backrest pad, the both sides fixedly connected with waist support pad of backrest pad outer surface, the rear end fixedly connected with the antiskid pad of backrest pad. The utility model discloses drive adjusting screw through manual rotation rotating seat, drive mobile seat axial movement along the thread track, and rely on the sliding fit of limiting block and limiting rod, convert rotary motion into the vertical displacement of mounting seat, in this process, connecting rod pushes installation block with connecting seat as fulcrum, make backrest pad and elasticity buffer pad cooperate and form dynamic support curved surface, and the structure realizes initiative hardness adjustment through mechanical linkage, satisfy the individualized demand of different body shape user to waist support intensity, also avoid the support force deviation through the limiting guide system, significantly improve the adaptability of seat ergonomics curve.

Description

Technical Field

[0001] This utility model relates to the field of seat lumbar support technology, and in particular to an elastic cushioning and reinforcement structure for seat lumbar support. Background Technology

[0002] With the popularization of remote work and the development of intelligent vehicles, in the process of manufacturing e-sports chairs / office chairs, research and development of new energy vehicle seats and design of rehabilitation medical beds, it is necessary to make precise adjustments to the lumbar support force for different user body types and dynamic sitting postures. At this time, the elastic cushioning and reinforcement structure of the lumbar support is required.

[0003] In practical use, similar lumbar support elastic cushioning and reinforcement structures still have many defects. For example, traditional lumbar support elastic cushioning and reinforcement structures use fixed sponge filling, which cannot adapt to the needs of users with different body types. At the same time, traditional lumbar support elastic cushioning and reinforcement structures are prone to displacement due to body swaying during use. Therefore, it is necessary to design a seat lumbar support elastic cushioning and reinforcement structure. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an elastic cushioning and reinforcement structure for a seat lumbar support.

[0005] This utility model is achieved using the following technical solution: a seat lumbar support elastic cushioning and reinforcement structure, including an installation assembly, the installation assembly including a backrest pad, lumbar support pads fixedly connected to both sides of the outer surface of the backrest pad, and an anti-slip pad fixedly connected to the rear end of the backrest pad, and further including:

[0006] A drive assembly, the drive assembly including a limiting rod fixedly connected inside the backrest cushion, and an mounting base slidably mounted on the outer surface of the limiting rod via a limiting block;

[0007] A support assembly, the support assembly including a connecting rod rotatably connected to the front end of the mounting base via a connecting seat, the front end of the connecting rod being fixedly connected to the inner wall of the backrest cushion via a mounting block.

[0008] As a further improvement to the above solution, an adjusting screw is rotatably connected inside the backrest cushion, and a rotating seat is fixedly connected to the top of the adjusting screw.

[0009] Through the above technical solution, this design allows users to drive the system through rotational motion without tools, simplifying the operation complexity. At the same time, the flange structure of the rotating seat enhances the effectiveness of hand force application.

[0010] As a further improvement to the above solution, the outer surface of the adjusting screw is threadedly connected to a movable seat, and the front end of the movable seat is fixedly connected to a mounting seat.

[0011] The above technical solution converts rotational motion into precise axial displacement, ensuring that the lifting distance of the mounting base is linearly proportional to the rotation angle, and achieving millimeter-level precise control of the support height.

[0012] As a further improvement to the above solution, limit blocks are fixedly connected to both sides of the mounting base, and the limit blocks are slidably mounted on the outer surface of the limit rod.

[0013] The above technical solution eliminates the radial oscillation that may occur in threaded drives, allowing the mounting base to move only in the vertical direction, thus ensuring the stability of the force transmission path.

[0014] As a further improvement to the above solution, the limiting rod is fixedly connected to the inside of the backrest cushion, and a connecting seat is fixedly connected to the outer surface of the mounting base.

[0015] The above technical solution enables the reaction force of the entire transmission system to be directly transmitted to the seat body, avoiding structural deformation caused by local stress concentration.

[0016] As a further improvement to the above solution, a connecting rod is rotatably connected inside the connecting seat, and an installation rod is fixedly connected inside the connecting rod.

[0017] Through the above technical solution, the structure allows the connecting rod to adaptively adjust its angle when pushing the mounting block, ensuring that the waist of users of different heights can receive effective support.

[0018] As a further improvement to the above solution, the mounting rod is rotatably connected to the inside of the mounting block, the mounting block is fixedly connected to the inner wall of the backrest cushion, and an elastic cushioning pad is fixedly connected to the side of the mounting block away from the backrest cushion.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention uses a manually rotated base to drive an adjusting screw, which in turn moves the movable base axially along the threaded trajectory. The rotational motion is converted into vertical displacement of the mounting base through the sliding engagement of the limiting block and the limiting rod. During this process, the connecting rod pushes the mounting block with the connecting base as a fulcrum, causing the backrest cushion and the elastic buffer pad to rise together to form a dynamic support surface. This structure achieves active hardness adjustment through mechanical linkage, satisfying the personalized needs of users of different body types for lumbar support while preventing support force deviation through the limiting and guiding system, significantly improving the seat's adaptability to ergonomic curves.

[0021] When external pressure is applied to the lumbar support, the elastic cushion absorbs the impact energy through material deformation. The hinged structure of the mounting rod and the mounting block allows for local angle self-adjustment, so that the support surface conforms to the curvature of the lumbar spine in real time with the movement of the human body. At the same time, the threaded engagement between the adjusting screw and the moving seat generates a self-locking effect, effectively resisting the risk of vibration and loosening during long-term use. This dual mechanism of "elastic cushioning + rigid locking" achieves precise control of support stiffness while ensuring dynamic comfort, solving the common problems of traditional lumbar supports that are either too hard, causing pressure, or too soft, lacking support. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the backrest cushion of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0025] Figure 4 This is a schematic diagram of the internal structure of the present utility model;

[0026] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0027] Explanation of key symbols:

[0028] 1. Mounting components; 101. Backrest cushion; 102. Lumbar support cushion; 103. Anti-slip mat; 2. Drive components; 201. Rotating seat; 202. Adjusting screw; 203. Moving seat; 204. Mounting seat; 205. Limiting block; 206. Limiting rod; 3. Support components; 301. Connecting seat; 302. Connecting rod; 303. Mounting rod; 304. Mounting block; 305. Elastic cushioning pad. Detailed Implementation

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] Example:

[0031] Please combine Figure 1-5 This embodiment of a seat lumbar support elastic cushioning and reinforcement structure includes a mounting assembly 1, which includes a backrest cushion 101. Lumbar support cushions 102 are fixedly connected to both sides of the outer surface of the backrest cushion 101, and an anti-slip pad 103 is fixedly connected to the rear end of the backrest cushion 101. It also includes:

[0032] Drive assembly 2 includes a limiting rod 206 fixedly connected inside the backrest cushion 101, and an mounting base 204 is slidably mounted on the outer surface of the limiting rod 206 via a limiting block 205;

[0033] Support component 3 includes a connecting rod 302 rotatably connected to the front end of mounting base 204 via connecting seat 301. The front end of connecting rod 302 is fixedly connected to the inner wall of backrest cushion 101 via mounting block 304.

[0034] An adjusting screw 202 is rotatably connected inside the backrest cushion 101, and a rotating seat 201 is fixedly connected to the top of the adjusting screw 202.

[0035] The outer surface of the adjusting screw 202 is threadedly connected to a movable seat 203, and the front end of the movable seat 203 is fixedly connected to a mounting seat 204.

[0036] Limiting blocks 205 are fixedly connected to both sides of the mounting base 204, and the limiting blocks 205 are slidably installed on the outer surface of the limiting rod 206.

[0037] The limiting rod 206 is fixedly connected to the inside of the backrest cushion 101, and the connecting seat 301 is fixedly connected to the outer surface of the mounting base 204.

[0038] The connecting rod 302 is rotatably connected inside the connecting seat 301, and the mounting rod 303 is fixedly connected inside the connecting rod 302.

[0039] The mounting rod 303 is rotatably connected to the inside of the mounting block 304, the mounting block 304 is fixedly connected to the inner wall of the backrest cushion 101, and an elastic cushioning pad 305 is fixedly connected to the side of the mounting block 304 away from the backrest cushion 101.

[0040] By manually holding the rotating seat 201, the adjusting screw 202 is rotated within the backrest cushion 101, which in turn causes the movable seat 203 to move up and down on its surface. Under the limitation of the limiting blocks 205 on both sides of the mounting seat 204, the mounting seat 204 can slide under the limitation of the limiting rod 206. When the mounting seat 204 is lowered, the connecting rod 302 within the connecting seat 301 can abut against the backrest cushion 101 at the mounting block 304 and protrude. Since the backrest cushion 101 and the elastic buffer pad 305 are made of flexible materials, the protruding part can support the passenger's waist.

[0041] The implementation principle of the elastic cushioning and reinforcement structure for a seat lumbar support in this embodiment is as follows: By manually holding the rotating seat 201, the adjusting screw 202 is driven to rotate inside the backrest cushion 101, which drives the movable seat 203, which is threadedly engaged with the adjusting screw 202, to move up and down axially. Since the front end of the movable seat 203 is fixedly connected to the mounting seat 204, and the limiting blocks 205 on both sides of the mounting seat 204 are slidably sleeved on the outer surface of the limiting rod 206, this movement is constrained to a linear sliding in the vertical direction. When the mounting seat 204 is subjected to the adjusting screw 202, the movement is constrained to a linear sliding in the vertical direction. When the 02 drive moves downward, the connecting rod 302 hinged at its front end deflects at an angle with the connecting seat 301 as the fulcrum, pushing the backrest pad 101 at the mounting block 304 to bulge outward. At this time, the elastic buffer pad 305 fixed to the side of the mounting block 304 away from the backrest pad 101 bulges up synchronously due to the flexible material properties, forming a directional support curved surface for the passenger's waist. During this process, the sliding pair formed by the limiting rod 206 and the limiting block 205 ensures that the mounting seat 204 only moves vertically, avoiding the dispersion of support force caused by horizontal offset.

[0042] When an external force is applied to the lumbar support of the seat, the elastic cushion 305 absorbs the impact energy through its own compression deformation. The rotating connection structure between the mounting rod 303 and the mounting block 304 allows for local fine-tuning, so that the support surface dynamically conforms to the lumbar curve as the body posture changes. At the same time, the thread self-locking characteristics of the adjusting screw 202 and the moving seat 203 can resist external pressure and prevent the adjusted mounting seat 204 from slipping down unexpectedly. This combination of mechanical linkage and material elasticity not only achieves precise adjustment of personalized support hardness, but also ensures long-term reliability through a multi-stage transmission structure, ultimately achieving a dual support effect of "active adaptation + passive cushioning".

[0043] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A seat lumbar support elastic cushioning and reinforcement structure, comprising an installation assembly (1), the installation assembly (1) comprising a backrest cushion (101), lumbar support cushions (102) being fixedly connected to both sides of the outer surface of the backrest cushion (101), and an anti-slip pad (103) being fixedly connected to the rear end of the backrest cushion (101), characterized in that, Also includes: The drive assembly (2) includes a limiting rod (206) fixedly connected inside the backrest cushion (101), and the outer surface of the limiting rod (206) is slidably mounted with a mounting base (204) via a limiting block (205); The support assembly (3) includes a connecting rod (302) rotatably connected to the front end of the mounting base (204) via a connecting seat (301), and the front end of the connecting rod (302) is fixedly connected to the inner wall of the backrest cushion (101) via a mounting block (304).

2. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 1, characterized in that: The backrest cushion (101) is rotatably connected to an adjusting screw (202), and a rotating seat (201) is fixedly connected to the top of the adjusting screw (202).

3. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 2, characterized in that: The outer surface of the adjusting screw (202) is threadedly connected to a movable seat (203), and the front end of the movable seat (203) is fixedly connected to a mounting seat (204).

4. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 3, characterized in that: Limiting blocks (205) are fixedly connected to both sides of the mounting base (204), and the limiting blocks (205) are slidably installed on the outer surface of the limiting rod (206).

5. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 4, characterized in that: The limiting rod (206) is fixedly connected to the inside of the backrest cushion (101), and the connecting seat (301) is fixedly connected to the outer surface of the mounting base (204).

6. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 5, characterized in that: The connecting seat (301) is rotatably connected to a connecting rod (302), and the connecting rod (302) is fixedly connected to an mounting rod (303).

7. The seat lumbar support elastic cushioning and reinforcement structure as described in claim 6, characterized in that: The mounting rod (303) is rotatably connected to the inside of the mounting block (304), the mounting block (304) is fixedly connected to the inner wall of the backrest cushion (101), and an elastic buffer pad (305) is fixedly connected to the side of the mounting block (304) away from the backrest cushion (101).

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