A seat linkage

Abstract

The application discloses a seat linkage device, comprising a support frame, a fixed disc arranged on the support frame, a movable disc rotatably connected to the fixed disc, a fixed block fixedly arranged on the movable disc, a movable block movably arranged on the fixed disc, an elastic linkage mechanism connected to the movable block, when the elastic linkage mechanism is pulled, the movable block is driven to overcome the elastic force and separate from the fixed block, so that the movable disc can rotate relative to the fixed disc to an inclined state, when the elastic linkage mechanism is released, the movable block is reset under the action of the elastic force, so that the movable block abuts against the fixed block again, and the movable disc returns to a horizontal state. The seat inclination angle can be quickly switched by simply pulling and releasing the elastic linkage mechanism, without complex adjustment steps or additional tools. A user only needs to pull the operating rod gently, and the switching from the horizontal state to the inclined state can be completed, the operation is simple and intuitive, is suitable for users of different ages and use scenes, and the operation convenience and user experience are greatly improved.

Description

Technical Field

[0001] This utility model particularly relates to a seat linkage device. Background Technology

[0002] Chairs are indispensable items in people's daily lives and work, widely used in offices, homes, and transportation. As people's pursuit of quality of life and work efficiency continues to increase, the functional requirements for chairs are also rising, especially the demand for adjustable chair tilt angles. However, existing adjustable chair tilt angle functions have revealed many problems in actual use, the most prominent being the complexity and inconvenience of the adjustment operation. These problems seriously affect the user experience and comfort.

[0003] Currently, most chair tilt angle adjustments are achieved through complex mechanical structures. Users often need to make multiple manual adjustments during use, each requiring precise operation of multiple components, and sometimes even the use of specific tools. This not only increases the difficulty of operation but also consumes a significant amount of time and effort. For example, the tilt angle adjustment function of some office chairs or massage chairs typically requires first loosening the fixing bolts, then manually adjusting the angles of various chair components, and finally retightening the bolts. The entire process is cumbersome and prone to errors. For users unfamiliar with the operating procedures, this is undoubtedly a major inconvenience. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a seat linkage device.

[0005] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0006] A seat linkage device includes: a support frame with a fixed plate on the support frame and a movable plate rotatably connected to the fixed plate; a fixed block fixedly mounted on the movable plate and a movable block movably mounted on the fixed plate; the movable block is connected to an elastic linkage mechanism, which, when pulled, causes the movable block to overcome the elastic force and disengage from the fixed block, allowing the movable plate to rotate relative to the fixed plate to an inclined state; when the elastic linkage mechanism is released, the movable block resets under the action of the elastic force, causing it to re-abut against the fixed block, restoring the movable plate to a horizontal state.

[0007] Preferably, the elastic linkage mechanism includes a fixed plate, which is fixedly mounted on a fixed plate and has a strip-shaped guide groove; the moving block is connected to a transmission structure, which can drive the moving block to move along the strip-shaped guide groove; the fixed plate has a locking position, which abuts against the fixed block when the moving block moves to the locking position under the drive of the transmission structure; and disengages from the fixed block when the moving block moves out of the locking position.

[0008] Preferably, the transmission structure includes a positioning box fixed on a fixed plate, a steel wire rope disposed inside the positioning box, one end of the steel wire rope being connected to a moving block, a spring disposed inside the positioning box, and a sliding limit block connected to the steel wire rope. When the steel wire rope is pulled, the steel wire rope causes the moving block to move out of the locked position, and the return spring deforms under the action of the sliding limit block; when the steel wire rope is released, the return spring restores its deformation and links with the steel wire rope to reset the moving block to the locked position.

[0009] Preferably, the positioning box is composed of an upper shell and a lower shell that are snapped together; the upper shell is provided with a spring mounting cavity, which forms a guide channel; the wire rope includes: a first rope segment, one end of which is connected to a sliding limit block, and a return spring is coaxially sleeved around the first rope segment; a second rope segment, one end of which is connected to a moving block, and the other end of which is connected to the first rope segment; when a pulling force is applied to the first rope segment: the sliding limit block moves axially along the spring mounting cavity, compresses the return spring, drives the second rope segment to move, and then pulls the moving block out of the locked position.

[0010] Preferably, a mounting base is fixedly provided on the fixed plate, and a guide sleeve is fixedly installed on the mounting base;

[0011] An operating rod is slidably fitted inside the guide sleeve; the end of the first rope segment is fixedly connected to the axial end of the operating rod; the inner wall of the guide sleeve and the outer wall of the operating rod form a sliding fit.

[0012] The beneficial effects of this utility model are:

[0013] This invention enables rapid switching of seat tilt angles through a simple pull-and-release elastic linkage mechanism, eliminating the need for complex adjustment steps or additional tools. Users can easily switch from a horizontal to a tilted position by simply pulling the operating lever. The operation is simple and intuitive, suitable for users of different ages and usage scenarios, greatly improving ease of use and user experience. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 3 ;

[0018] Figure 4 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 4 ;

[0019] Figure 5 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 5 ;

[0020] Figure 6 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 6 ;

[0021] Figure 7 This is a schematic diagram of the structure of a seat linkage device according to this application. Figure 7 . Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0023] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0024] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, soldering, snap-fitting, or embedding to suitably replace it.

[0025] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0026] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0027] A seat linkage device includes: a support frame 1, a fixed plate 2 disposed on the support frame 1, and a movable plate 3 rotatably connected to the fixed plate 2; a fixed block 4 fixedly disposed on the movable plate 3, and a movable block 5 movably disposed on the fixed plate 2; the movable block 5 is connected to an elastic linkage mechanism, which, when pulled, causes the movable block 5 to overcome the elastic force and disengage from the fixed block 4, allowing the movable plate 3 to rotate relative to the fixed plate 2 to an inclined state; when the elastic linkage mechanism is released, the movable block 5 resets under the action of the elastic force, causing it to re-abut against the fixed block 4, and the movable plate 3 returns to a horizontal state.

[0028] Furthermore, the elastic linkage mechanism includes a fixed plate 62, which is fixedly mounted on the fixed plate 2 and has a strip-shaped guide groove 621; the moving block 5 is connected to a transmission structure, which can drive the moving block 5 to move along the strip-shaped guide groove 621; the fixed plate 2 has a locking position 21, which abuts against the fixed block 4 when the moving block 5 moves to the locking position 21 under the drive of the transmission structure; and disengages from the fixed block 4 when the moving block 5 moves out of the locking position 21.

[0029] Furthermore, the transmission structure includes a positioning box 631 fixed on the fixed plate 2. A steel wire rope is installed inside the positioning box 631, with one end of the steel wire rope connected to the moving block 5. A spring 633 is installed inside the positioning box 631, and a sliding limit block 634 is connected to the steel wire rope. When the steel wire rope is pulled, it causes the moving block 5 to move out of the locked position 21, and the return spring 633 deforms under the action of the sliding limit block 634. When the steel wire rope is released, the return spring 633 restores its deformation and links with the steel wire rope, so that the moving block 5 returns to the locked position 21.

[0030] Furthermore, the positioning box 631 is composed of an upper shell 631a and a lower shell 631b that are snapped together; the upper shell 631a is provided with a spring mounting cavity 637, which forms a guide channel; the wire rope includes: a first rope segment 632a, one end of which is connected to a sliding limit block 634, and a return spring 633 is coaxially sleeved around the first rope segment 632a; a second rope segment 632b, one end of which is connected to a moving block 5, and the other end of which is connected to the first rope segment 632a; when a pulling force is applied to the first rope segment 632a: the sliding limit block 634 moves axially along the spring mounting cavity 637, compresses the return spring 633, drives the second rope segment 632b to move, and then pulls the moving block 5 out of the locked position 21.

[0031] Furthermore, a mounting base 22 is fixedly provided on the fixed plate 2, and a guide sleeve 23 is fixedly installed on the mounting base 22;

[0032] An operating rod 24 is slidably fitted inside the guide sleeve 23; the end of the first rope segment 632a is fixedly connected to the axial end of the operating rod 24; the inner wall of the guide sleeve 23 and the outer wall of the operating rod 24 form a sliding fit.

[0033] The working principle of this utility model is as follows:

[0034] This embodiment provides a seat linkage device, mainly including a support frame 1, a fixed plate 2, a movable plate 3, a fixed block 4, a movable block 5, and an elastic linkage mechanism. The support frame 1 is securely fixed to the seat legs, while the movable plate 3 is firmly connected to the seat seat. When an external force is applied to the elastic linkage mechanism, the movable block 5 disengages from the fixed block 4. Because of the rotational connection between the movable plate 3 and the fixed plate 2, the movable plate 3 can rotate freely around the fixed plate 2, allowing the seat, which is fixedly connected to the movable plate 3, to tilt at an angle, enabling various sitting postures such as forward or backward tilting. When the user releases the force applied to the elastic linkage mechanism (at which point the user acts on the seat, causing the movable plate 3 to rotate relative to the fixed plate 2 to a horizontal position), the fixed block 4 disengages from its locking position 21. Figure 2 As shown, the movable block 5 can be reset to the locked position 21 under the action of elasticity, so that it abuts against the fixed block 4 again, and finally the seat is in a stable horizontal position again to meet the user's needs in different scenarios.

[0035] Based on the above technical solution, the elastic linkage mechanism includes a fixed plate 62 and a transmission structure. The fixed plate 62 is fixedly mounted on the fixed plate 2 and has a strip-shaped guide groove 621. The moving block 5 is connected to the transmission structure, which can drive the moving block 5 to move along the strip-shaped guide groove 621. When the moving block 5 moves to the locking position 21 under the action of the transmission structure, it abuts against the fixed block 4, thereby keeping the moving plate 3 in a horizontal state. When the moving block 5 moves out of the locking position 21, it disengages from the fixed block 4, and the moving plate 3 can rotate freely relative to the fixed plate 2, achieving an inclined state.

[0036] Based on the above technical solution, the transmission structure includes a positioning box 631, a steel wire rope, a spring 633, and a sliding limit block 634. The positioning box 631 is fixedly mounted on the fixed plate 2 and is composed of an upper shell 631a and a lower shell 631b connected together. It has a spring mounting cavity 637 inside, which not only houses the spring 633 but also serves as a guide. The steel wire rope is divided into two parts: a first rope segment 632a and a second rope segment 632b. One end of the first rope segment 632a is connected to the sliding limit block 634, which can move axially within the spring mounting cavity 637. The return spring 633 is coaxially sleeved around the first rope segment 632a. One end of the second rope segment 632b is connected to a moving block 5, and the other end is connected to the first rope segment 632a. When tension is applied to the first rope segment 632a, the sliding limit block 634 moves axially along the spring mounting cavity 637, simultaneously compressing the return spring 633. This movement drives the second rope segment 632b, which in turn pulls the moving block 5, causing it to disengage from the locking position 21. At this point, the moving disc 3 can rotate to an inclined state. When the wire rope is released, the return spring 633 returns to its original deformation. Through the linkage of the wire rope, the moving block 5 returns to the locking position 21 and re-engages with the fixed block 4. The moving disc 3 returns to a horizontal state. The entire operation is smooth and natural, allowing users to easily switch the seat angle.

[0037] Based on the above technical solution, this application further enhances the structural design of the operating lever 24 to facilitate user operation. A mounting base 22 is fixedly mounted on the fixed plate 2, and a guide sleeve 23 is mounted on the mounting base 22. The operating lever 24 is slidably fitted within the guide sleeve 23, with the outer wall of the operating lever 24 forming a tight sliding fit with the inner wall of the guide sleeve 23, ensuring smooth and accurate movement of the operating lever 24 during movement without shaking or jamming. The end of the first rope segment 632a is fixedly connected to the axial end of the operating lever 24. By pulling the operating lever 24, the user can directly apply tension to the wire rope, thereby realizing the movement of the moving block 5 and the tilt angle adjustment of the moving plate 3. This design makes operation more user-friendly; the user can easily switch the seat angle by simply pulling the operating lever 24 without directly contacting the complex mechanical structure, greatly improving ease of use.

[0038] This invention enables rapid switching of the seat tilt angle through a simple pull and release elastic linkage mechanism 6, eliminating the need for complex adjustment steps or additional tools. Users can easily switch from a horizontal to a tilted position by gently pulling the operating lever 24. The operation is simple and intuitive, suitable for users of different ages and usage scenarios, greatly improving ease of operation and user experience. This invention employs a simple elastic linkage mechanism 6 and transmission structure 63, resulting in fewer parts and a compact structure, reducing potential failure points caused by complex structures. The combination of spring 633 and wire rope 632 stably provides elasticity and traction, ensuring smooth and reliable movement and reset of the moving block 5. The precise guiding design of the positioning box 631 and guide sleeve 23 further ensures the long-term stable operation of the transmission structure, extending the service life of the device.

[0039] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A seat linkage characterized by, include: The support frame (1) is characterized in that: a fixed plate (2) is provided on the support frame (1), and a movable plate (3) is rotatably connected to the fixed plate (2); a fixed block (4) is fixedly provided on the movable plate (3), and a movable block (5) is movably provided on the fixed plate (2); the movable block (5) is connected to an elastic linkage mechanism, and when the elastic linkage mechanism is pulled, it drives the movable block (5) to overcome the elastic force and disengage from the fixed block (4), so that the movable plate (3) can rotate to an inclined state relative to the fixed plate (2); when the elastic linkage mechanism is released, the movable block (5) resets under the action of the elastic force, so that it abuts against the fixed block (4) again, so that the movable plate (3) returns to a horizontal state.

2. A seat linkage as claimed in claim 1, wherein The elastic linkage mechanism includes a fixed plate (62), which is fixedly mounted on the fixed plate (2) and has a strip guide groove (621); the moving block (5) is connected to a transmission structure, which can drive the moving block (5) to move along the strip guide groove (621); the fixed plate (2) has a locking position (21), which abuts against the fixed block (4) when the moving block (5) moves to the locking position (21) under the drive of the transmission structure; and disengages from the fixed block (4) when the moving block (5) moves out of the locking position (21).

3. A seat linkage as claimed in claim 2, wherein The transmission structure includes a positioning box (631) fixed on a fixed plate (2). A steel wire rope is installed inside the positioning box (631). One end of the steel wire rope is connected to a moving block (5). A spring (633) is installed inside the positioning box (631). A sliding limit block (634) is connected to the steel wire rope. When the steel wire rope is pulled, the steel wire rope drives the moving block (5) to move out of the locked position (21). The return spring (633) deforms under the action of the sliding limit block (634). When the steel wire rope is released, the return spring (633) restores its deformation and links with the steel wire rope so that the moving block (5) returns to the locked position (21).

4. A seat linkage as claimed in claim 3, wherein The positioning box (631) is composed of an upper shell (631a) and a lower shell (631b) that are snapped together. The upper shell (631a) is provided with a spring mounting cavity (637), which forms a guide channel. The wire rope includes: a first rope segment (632a), one end of which is connected to a sliding limit block (634), and a return spring (633) is coaxially sleeved around the first rope segment (632a); a second rope segment (632b), one end of which is connected to a moving block (5), and the other end of which is connected to the first rope segment (632a). When a pulling force is applied to the first rope segment (632a): the sliding limit block (634) moves axially along the spring mounting cavity (637), compresses the return spring (633), drives the second rope segment (632b) to move, and then pulls the moving block (5) to disengage from the locked position (21).

5. A seat linkage as claimed in claim 4, wherein A mounting base (22) is fixedly provided on the fixed plate (2), and a guide sleeve (23) is fixedly installed on the mounting base (22); an operating rod (24) is slidably fitted inside the guide sleeve (23); the end of the first rope segment (632a) is fixedly connected to the axial end of the operating rod (24); the inner wall of the guide sleeve (23) and the outer wall of the operating rod (24) form a sliding fit.

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