Self-weight-bearing side-to-side rocking seat chassis

Abstract

The utility model relates to a seat chassis technical field especially is a kind of self-weight left and right swing seat chassis, including bottom plate, it is characterized by: the movable seat is equipped in bottom plate bottom, the movable seat is equipped with the inclination adjustment mechanism, the movable seat is equipped with the conical tube fixed plate, the conical tube fixed plate bottom is equipped with connecting conical tube, the movable seat one side is equipped with swing mechanism, the movable seat other side is equipped with side movable seat, the swing mechanism includes the spring support being equipped in movable seat, the inside center of spring support is equipped with U-shaped support, shaft hole is opened in U-shaped support, pivot is equipped on the shaft hole, the utility model seat chassis advantage is outstanding, swing mechanism lets seat body weight natural swing, need not counterweight, low in cost and stable flexible;Inclination adjustment mechanism can be flexibly adjusted angle, has buffering and automatic reset function;Movable seat reasonable layout each mechanism, multiple rivet connection guarantee firm.

Description

Technical Field

[0001] This utility model relates to the field of seat chassis technology, and in particular to a self-supporting left-right rocking seat chassis. Background Technology

[0002] As people's living standards improve, their demands for chair comfort are also increasing. Prolonged sitting in chairs during daily life and work can cause fatigue. Therefore, chairs with rocking functions can provide dynamic support, helping to alleviate physical fatigue and improve the user experience. The demand for such chairs is growing in homes, offices, and other places. Traditional chair chassis typically only provide basic support. While some chairs offer rocking or tilting adjustments, their complex structures and poor coordination between functional modules make it difficult to achieve stable and smooth left-right rocking and tilting adjustments. Furthermore, some chairs require additional counterweights to ensure rocking stability, increasing cost and weight while limiting flexibility. In addition, traditional chair chassis are prone to component wear and loosening during long-term use, affecting the chair's lifespan and safety.

[0003] Chinese patent discloses a seat chassis (publication number: CN 206499204 U) including a main chassis frame and a movable component for connecting the seat back. The movable component is hinged to the main chassis frame via a first axis. A nut is fixedly mounted on the movable component, and a bolt is threaded onto the nut. A spring cover is fixedly mounted on the other end of the bolt, and a spring is provided between the movable component and the spring cover. When the seat back tilts, the movable component rotates around the first axis, causing the bolt and spring cover to shift. However, most of these seat chassis only have basic support functions. Some seats with rocking or tilting adjustment functions have problems such as complex structure, poor coordination of functional modules, need for additional counterweight devices, and easy wear and loosening, making it difficult to achieve stable and smooth rocking and tilting adjustments, and affecting service life and safety. Therefore, a self-weighting left-right rocking seat chassis is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems that most traditional seat chassis in the prior art only have basic support functions, and some seats with rocking or tilting adjustment functions have complex structures, poor functional module coordination, require additional counterweight devices, and are prone to wear and loosening, making it difficult to achieve stable and smooth rocking and tilting adjustment, and affecting service life and safety. Therefore, a self-weighted left and right rocking seat chassis is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The self-supporting left-right rocking seat chassis of this utility model includes a base plate, characterized in that: a movable seat is provided at the bottom of the base plate, a tilt adjustment mechanism is provided on the movable seat, a conical tube fixing plate is provided on the movable seat, a connecting conical tube is provided at the bottom of the conical tube fixing plate, a rocking mechanism is provided on one side of the movable seat, and a side movable seat is provided on the other side of the movable seat. The rocking mechanism includes a spring support provided on the movable seat, a U-shaped bracket is provided at the center of the spring support, a shaft hole is opened on the U-shaped bracket, a rotating shaft passes through the shaft hole, rocking springs are provided on both sides of the U-shaped bracket, the number of rocking springs is 2 and they are symmetrically arranged along the center line, and a plug-in cover plate is provided on the rocking spring. Achieving left-right swaying function: Through the cooperation of spring supports, U-shaped brackets, shaft holes, pivots, and symmetrically arranged swaying springs, the seat can naturally sway left and right based on the user's own weight, bringing a comfortable dynamic experience and increasing the fun and relaxation of using the seat; Good structural stability: The moving seat serves as the mounting base for multiple key components, with the tilt adjustment mechanism and swaying mechanism rationally arranged on both sides. Combined with the tapered tube fixing plate and connecting tapered tube, the entire seat chassis structure is more stable, capable of withstanding certain external forces and impacts during use, ensuring normal seat operation; Easy installation and maintenance: Components such as the swaying springs are connected via plug-in cover plates. This design makes the installation and disassembly of the swaying springs convenient, and when the swaying springs are damaged, they can be quickly replaced, reducing maintenance costs and time.

[0006] Preferably, the tilt adjustment mechanism includes a locking pin, one end of which is provided with an adjusting rod. A tilt adjustment block is sleeved on the outer wall of the locking pin. A tilt torsion spring is provided on one side of the tilt adjustment block. A positioning pin is provided at one end of the tilt torsion spring. A connecting block is provided between the positioning pin and the tilt adjustment block. The locking pin is composed of a cylindrical section and a square locking section. The adjusting rod allows for convenient operation of the locking pin, thereby changing the position of the tilt adjustment block and flexibly adjusting the seat tilt angle. Users can adjust to the most comfortable sitting angle according to their needs and usage habits, improving comfort. The tilt torsion spring acts as a buffer during seat tilting, reducing the impact force caused by sudden tilting and protecting the user's body. Meanwhile, after the user adjusts the tilt angle, the tilt torsion spring can help the seat automatically reset to a certain extent, maintaining the stability of the seat; the locking pin is composed of a combination of cylindrical and square locking sections. This structural design can ensure reliable connection and effective locking between the locking pin and components such as the tilt adjustment block, preventing accidental changes in the tilt angle during normal use and ensuring the safety and stability of the seat.

[0007] Preferably, the tilt adjustment block has a spring retainer at its bottom, within which a miniature compression spring is installed, and a steel ball is mounted on the miniature compression spring. The combination of the miniature compression spring and the steel ball provides a certain preload and positioning function to the tilt adjustment block, allowing it to be positioned more precisely at different locations during adjustment. This improves the accuracy of tilt angle adjustment, enabling users to find a more suitable tilt angle. The steel ball provides rolling friction between the spring retainer and the tilt adjustment block, which, compared to sliding friction, effectively reduces wear between components and extends the service life of the tilt adjustment mechanism. Simultaneously, the rolling friction generates less noise, improving the quietness of the seat during use and providing a quieter and more comfortable environment for the user.

[0008] Preferably, the connection between the movable seat and the side movable seat is provided with a first rivet and a second rivet, and the connection between the movable seat and the spring support is provided with a third rivet and a fourth rivet. The side movable seat, the movable seat, and the spring support are engaged with the base plate by the first rivet, the second rivet, the third rivet, and the fourth rivet. By using multiple rivets to firmly connect the movable seat, the side movable seat, the spring support, and the base plate, the connection strength between the components can be effectively guaranteed, preventing loosening or separation of components due to external forces during use, and ensuring the overall structural stability of the seat chassis. This connection method makes the side movable seat, the movable seat, and the spring support form an organic whole with the base plate, enhancing the integrity and coordination of the seat chassis, and helping to improve the performance of the seat under various usage conditions, such as the smoothness of rocking and the stability of tilt adjustment.

[0009] Preferably, a fifth rivet is provided between the movable seat and the spring support. The outer wall of the fifth rivet is provided with a wear-resistant bushing, and the outer wall of the wear-resistant bushing is provided with a return spring. The return spring is associated with the U-shaped bracket. The wear-resistant bushing on the outer wall of the fifth rivet effectively reduces wear between the movable seat and the spring support during relative movement, extends the service life of the fifth rivet and related components, and reduces the risk of component damage and failure due to wear. The return spring, associated with the U-shaped bracket, provides a certain restoring force when the seat sways or tilts, helping the seat return to its initial equilibrium position, ensuring normal use and a good user experience, and keeping the seat stable at all times.

[0010] Preferably, the base plate has two parallel elongated grooves symmetrically arranged in the middle area of ​​the base plate. These elongated grooves provide space and guidance for the movement of other adjustable components of the seat (such as possible seat fore-and-aft adjustment mechanisms), making the seat adjustment more flexible in certain aspects. Users can make more precise adjustments to the seat position according to their needs, improving the seat's usability. The two parallel and symmetrically arranged elongated grooves in the middle area of ​​the base plate make the base plate structure more symmetrical and rational, helping to improve the overall stability and balance of the seat chassis. They also provide more favorable conditions for the installation and arrangement of other components, making the entire seat chassis structure more compact and optimized.

[0011] The advantages of this utility model are: This utility model provides a self-weighted left-right rocking seat chassis with several outstanding functional advantages. Regarding the rocking function, through a cleverly designed rocking mechanism utilizing spring supports, U-shaped brackets, shaft holes, pivots, and symmetrically arranged rocking springs, the seat can achieve a natural and smooth left-right rocking motion based on the user's own weight, providing a comfortable dynamic experience and increasing the fun and relaxation of using the seat. Stability of the rocking motion is guaranteed without additional counterweights, reducing the cost and weight of the seat and improving its flexibility. In terms of tilt adjustment, the tilt adjustment mechanism, through the coordinated action of locking pins, adjusting rods, tilt adjustment blocks, tilt torsion springs, positioning pins, and connecting blocks, allows users to flexibly adjust the tilt angle of the seat to achieve the most comfortable sitting posture according to their needs and usage habits. The tilt torsion springs also act as a buffer during tilting, reducing the impact on the body, and can automatically reset to a certain extent after the angle is adjusted, maintaining the stability of the seat. In terms of structural connections, the movable seat, as a key basic component, features a rationally designed tilt and rocking mechanism. Multiple rivets securely connect the movable seat, side movable seats, spring supports, and base plate, ensuring the stability and integrity of the entire seat chassis structure. This allows it to withstand certain external forces and impacts during use, preventing components from loosening or separating and ensuring the seat's normal operation under various usage conditions. Furthermore, the combination of spring retainers, miniature compression springs, and steel balls at the bottom of the tilt adjustment block enhances the precision of tilt adjustment while reducing wear and noise between components. The fifth rivet, wear-resistant bushing, and return spring between the movable seat and spring supports reduce wear while enabling the seat's return function. The elongated groove on the base plate provides space and guidance for other possible adjustment functions, optimizing the overall structure and performance of the seat chassis, improving the seat's applicability and lifespan, and providing users with a more comfortable, stable, and durable seating experience. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced 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.

[0013] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the initial structure of this utility model.

[0015] Figure 3 This utility model Figure 2 Sectional view of AA.

[0016] Figure 4 This utility model Figure 3 A cross-sectional view of BB.

[0017] Figure 5 This is a schematic diagram of the rocker arm's left-right swinging structure of this utility model.

[0018] Figure 6 This utility model Figure 5 A cross-sectional view of BB.

[0019] Figure 7 This is a schematic diagram of the rearward tilting structure of this utility model.

[0020] In the diagram: 1. Base plate; 2. Long strip slide; 3. Side movable seat; 4. Connecting block; 5. Middle seat; 6. Rotating shaft; 7. Spring support; 8. Rocking spring; 9. U-shaped bracket; 10. Insertion cover plate; 11. Wear-resistant bushing; 12. Return spring; 13. Positioning pin; 14. Tilt torsion spring; 15. Tilt adjustment block; 16. Steel ball; 17. Miniature compression spring; 18. Spring retainer; 19. Cylindrical section; 20. Square locking section; 21. Adjusting rod; 22. First rivet; 23. Second rivet; 24. Third rivet; 25. Fourth rivet; 26. Fifth rivet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0022] Please see Figure 1-7 As shown, the technical solution adopted by this utility model to solve its technical problem is as follows: The self-weighting left and right rocking seat chassis of this utility model includes a base plate 1, characterized in that: a movable seat 5 is provided at the bottom of the base plate 1, a tilt adjustment mechanism is provided on the movable seat 5, a conical tube fixing plate is provided on the movable seat 5, a connecting conical tube is provided at the bottom of the conical tube fixing plate, a rocking mechanism is provided on one side of the movable seat 5, and a side movable seat 3 is provided on the other side of the movable seat 5. The rocking mechanism includes a spring support 7 provided on the movable seat 5, a U-shaped bracket 9 is provided at the center of the spring support 7, a shaft hole is opened on the U-shaped bracket 9, a rotating shaft 6 passes through the shaft hole, rocking springs 8 are provided on both sides of the U-shaped bracket 9, the number of rocking springs 8 is 2 and they are symmetrically arranged with the center line, and a plug-in cover plate 10 is provided on the rocking spring 8. Achieving left-right swaying function: Through the cooperation of spring support 7, U-shaped bracket 9, shaft hole, rotating shaft 6, and symmetrically arranged swaying springs 8, the seat can naturally sway left and right based on the weight of the user, bringing a comfortable dynamic experience and increasing the fun and relaxation of using the seat; Good structural stability: The active seat 5 serves as the installation base for multiple key components, with the tilt adjustment mechanism and swaying mechanism rationally arranged on both sides. Combined with the cone tube fixing plate and connecting cone tube, the entire seat chassis structure is more stable, able to withstand certain external forces and impacts during use, ensuring normal use of the seat; Easy installation and maintenance: Components such as the swaying springs 8 are connected through the plug-in cover plate 10. This design makes the installation and disassembly of the swaying springs 8 convenient. When the swaying springs 8 are damaged, they can be quickly replaced, reducing maintenance costs and time.

[0023] In this embodiment, the tilt adjustment mechanism includes a locking pin, an adjusting rod 21 at one end of the locking pin, a tilt adjustment block 15 sleeved on the outer wall of the locking pin, a tilt torsion spring 14 on one side of the tilt adjustment block 15, a positioning pin 13 at one end of the tilt torsion spring 14, and a connecting block 4 between the positioning pin 13 and the tilt adjustment block 15. The locking pin is composed of a cylindrical section 19 and a square locking section 20. The adjusting rod 21 allows for convenient operation of the locking pin, thereby changing the position of the tilt adjustment block 15 and flexibly adjusting the seat tilt angle. Users can adjust to the most comfortable sitting angle according to their needs and usage habits, improving comfort. The tilt torsion spring 14 acts as a buffer during seat tilting, reducing the impact force caused by sudden tilting and protecting the user's body. Meanwhile, after the user adjusts the tilt angle, the tilt torsion spring 14 can help the seat automatically reset to a certain extent, maintaining the stability of the seat; the locking pin is composed of a cylindrical section 19 and a square locking section 20. This structural design can ensure reliable connection and effective locking between the locking pin and components such as the tilt adjustment block 15, preventing accidental changes in the tilt angle during normal use and ensuring the safety and stability of the seat.

[0024] In this embodiment, the tilt adjustment block 15 has a spring retainer 18 at its bottom, and a miniature compression spring 17 is installed inside the spring retainer 18. A steel ball 16 is mounted on the miniature compression spring 17. The combination of the miniature compression spring 17 and the steel ball 16 provides a certain preload and positioning function for the tilt adjustment block 15, allowing it to be positioned more accurately at different positions during adjustment, thereby improving the accuracy of tilt angle adjustment and enabling users to find a suitable tilt angle more precisely. The steel ball 16 provides rolling friction between the spring retainer 18 and the tilt adjustment block 15, which effectively reduces wear between components and extends the service life of the tilt adjustment mechanism compared to sliding friction. At the same time, the noise generated by rolling friction is lower, improving the quietness of the seat during use and providing a quieter and more comfortable environment for the user.

[0025] In this embodiment, the connection between the movable seat 5 and the side movable seat 3 is provided with a first rivet 22 and a second rivet 23, and the connection between the movable seat 5 and the spring support 7 is provided with a third rivet 24 and a fourth rivet 25. The side movable seat 3, the movable seat 5, and the spring support 7 are connected to the base plate 1 by the first rivet 22, the second rivet 23, the third rivet 24, and the fourth rivet 25. By using multiple rivets to firmly connect the movable seat 5, the side movable seat 3, the spring support 7, and the base plate 1, the connection strength between the components can be effectively guaranteed, preventing loosening or separation of components due to external forces during use, and ensuring the overall structural stability of the seat chassis. This connection method makes the side movable seat 3, the movable seat 5, and the spring support 7 form an organic whole with the base plate 1, enhancing the integrity and coordination of the seat chassis, and helping to improve the performance of the seat under various usage conditions, such as the smoothness of rocking and the stability of tilt adjustment.

[0026] In this embodiment, a fifth rivet 26 is provided between the movable seat 5 and the spring support 7. A wear-resistant bushing 11 is provided on the outer wall of the fifth rivet 26, and a return spring 12 is provided on the outer wall of the wear-resistant bushing 11. The return spring 12 is associated with the U-shaped bracket 9. The wear-resistant bushing 11, located on the outer wall of the fifth rivet 26, effectively reduces wear between the movable seat 5 and the spring support 7 during relative movement, extends the service life of the fifth rivet 26 and related components, and reduces the risk of component damage and failure due to wear. The return spring 12, associated with the U-shaped bracket 9, provides a certain restoring force when the seat sways or tilts, helping the seat return to its initial equilibrium position, ensuring normal use and a good user experience, and keeping the seat stable at all times.

[0027] In this embodiment, the base plate 1 is provided with two parallel elongated sliding grooves 2, which are symmetrically arranged in the middle area of ​​the base plate 1. The elongated sliding grooves 2 provide space and guidance for the movement of other adjustable components of the seat (such as possible seat fore-and-aft adjustment mechanisms), making the seat adjustment more flexible in certain aspects. Users can make more precise adjustments to the seat position according to their own needs, improving the suitability of the seat. The two parallel and symmetrically arranged elongated sliding grooves 2 in the middle area of ​​the base plate 1 make the structure of the base plate 1 more symmetrical and reasonable, which helps to improve the overall stability and balance of the seat chassis. At the same time, it also provides more favorable conditions for the installation and arrangement of other components, making the structure of the entire seat chassis more compact and optimized.

[0028] The implementation principle of this embodiment is as follows: The principle of left-right rocking: When a user sits on the chair, the weight of the body is applied to the seat, causing the movable seat 5 to experience a certain force. Because the U-shaped bracket 9 inside the spring support 7 of the rocking mechanism has a rotating shaft 6 passing through a shaft hole, the rocking springs 8 symmetrically arranged on both sides of the U-shaped bracket 9 undergo elastic deformation when the movable seat 5 shifts left and right. When the user leans to one side, the movable seat 5 drives the U-shaped bracket 9 in the rocking mechanism to shift to that side, compressing one rocking spring 8 and stretching the other. The compressed and stretched rocking springs 8 generate opposite elastic forces. When the user stops applying additional tilting force, the elastic force causes the movable seat 5 to return the seat to a relatively balanced position. If the user continues to apply tilting force with a certain force and frequency, the seat will rock left and right. The plug-in cover plate 10 is used to fix the rocking springs 8, ensuring their stability during operation.

[0029] Tilting Adjustment Principle: The user operates the adjusting lever 21, which moves the locking pin. The tilt adjusting block 15, fitted onto the outer wall of the locking pin, moves accordingly, thus changing its position. The tilt torsion spring 14 on one side of the tilt adjusting block 15 acts as a buffer and stores energy during seat tilting. When the seat tilts backward, the tilt torsion spring 14 is compressed, storing elastic potential energy. Simultaneously, the connecting block 4 between the positioning pin 13 and the tilt adjusting block 15 ensures connection and coordination between the components. The miniature compression spring 17 and steel ball 16 installed in the spring retainer 18 at the bottom of the tilt adjusting block 15 provide a certain preload and positioning function, allowing the tilt adjusting block 15 to be positioned more precisely at different locations, achieving different tilt angle adjustments. When the user releases the adjusting lever 21, the seat will automatically return to its original position to a certain extent under the elastic force of the tilt torsion spring 14, maintaining a stable sitting angle.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A self-supporting left-right rocking seat chassis, comprising a base plate (1), characterized in that: The bottom of the base plate (1) is provided with a movable seat (5), the movable seat (5) is provided with a tilt adjustment mechanism, the movable seat (5) is provided with a cone tube fixing plate, the bottom of the cone tube fixing plate is provided with a connecting cone tube, the movable seat (5) is provided with a rocking mechanism on one side, the movable seat (5) is provided with a side movable seat (3) on the other side, the rocking mechanism includes a spring support (7) provided on the movable seat (5), the center of the spring support (7) is provided with a U-shaped bracket (9), the U-shaped bracket (9) is provided with a shaft hole, the shaft hole is provided with a rotating shaft (6), the U-shaped bracket (9) is provided with rocking springs (8) on both sides, the number of rocking springs (8) is 2 and they are symmetrically arranged with the center line, and the rocking springs (8) are provided with plug-in cover plates (10).

2. The self-supporting left-right rocking seat chassis according to claim 1, characterized in that: The tilt adjustment mechanism includes a locking pin, one end of which is provided with an adjusting rod (21), and a tilt adjustment block (15) is sleeved on the outer wall of the locking pin. A tilt torsion spring (14) is provided on one side of the tilt adjustment block (15), and a positioning pin (13) is provided at one end of the tilt torsion spring (14). A connecting block (4) is provided between the positioning pin (13) and the tilt adjustment block (15). The locking pin is composed of a cylindrical section (19) and a square locking section (20).

3. The self-supporting left-right rocking seat chassis according to claim 2, characterized in that: The tilt adjustment block (15) is provided with a spring retainer (18) at the bottom. A miniature compression spring (17) is installed inside the spring retainer (18), and a steel ball (16) is installed on the miniature compression spring (17).

4. The self-supporting left-right rocking seat chassis according to claim 1, characterized in that: The connecting points of the movable seat (5) and the side movable seat (3) are provided with a first rivet (22) and a second rivet (23). The connecting points of the movable seat (5) and the spring support (7) are provided with a third rivet (24) and a fourth rivet (25). The side movable seat (3), the movable seat (5) and the spring support (7) are connected to the base plate (1) by the first rivet (22), the second rivet (23), the third rivet (24) and the fourth rivet (25).

5. The self-supporting left-right rocking seat chassis according to claim 1, characterized in that: A fifth rivet (26) is provided between the active seat (5) and the spring support (7). The outer wall of the fifth rivet (26) is provided with a wear-resistant bushing (11). The outer wall of the wear-resistant bushing (11) is provided with a return spring (12). The return spring (12) is associated with the U-shaped bracket (9).

6. The self-supporting left-right rocking seat chassis according to claim 1, characterized in that: The base plate (1) is provided with two parallel elongated grooves (2), which are symmetrically arranged in the middle area of ​​the base plate (1).

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