Self-load-bearing multifunctional seat chassis with gear type elasticity adjustment function

Abstract

The utility model relates to the technical field of office chairs, in particular to a self-load-bearing multifunctional chair chassis with a gear type elastic adjustment function. Which comprises a base and is characterized in that a warping plate is installed on one side of the base, a movable plate is installed on the other side of the base, a bottom plate is installed on the top of the base, a fixed plate is installed in the base, a taper pipe is installed in the fixed plate, a locking soldering lug is installed on the fixed plate, and a locking pin is installed on the surface of the locking soldering lug. By means of linkage of the warping plate, the movable plate and the torsional spring, the elastic force of the base plate is adjusted according to different conditions, and it is ensured that users of different body types can obtain comfortable support; the user can easily adjust the hardness of the chassis without bending down or leaving the seat through the elastic adjusting handle and the locking pull wire; when the elastic force of the chassis changes, the supporting force of the backrest is synchronously adjusted, and the natural curve of the spine is kept.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, and in particular to a self-weighting multi-functional chair chassis with adjustable elasticity. Background Technology

[0002] Traditional chair chassis mostly employ a fixed support structure, relying primarily on a rigid frame or a simple spring cushioning system. This design has significant limitations: First, the adjustment process is cumbersome, typically requiring manual adjustment of screws or gas valves, making dynamic self-adaptation impossible. Second, the fixed spring design struggles to accommodate differences in user weight and posture, easily leading to fatigue. Furthermore, ordinary springs or gas structures are prone to wobbling and rattling in dynamic scenarios such as office chair sliding or car movement, affecting user comfort. These shortcomings mean that traditional chassis cannot meet personalized needs or provide stable dynamic support.

[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. A spring is provided between the movable component and the spring cover. When the seat back is tilted, the movable component rotates around the first axis, causing the bolt and spring cover to shift. The spring provides resistance to the movable component, hindering its rotation. However, this type of seat chassis is inconvenient to adjust and has a limited adjustment range. The fixed elastic design is difficult to match different weights and sitting postures, and it is prone to shaking and abnormal noise during dynamic use. It lacks both personalized adaptability and stable dynamic support, seriously affecting the comfort and functionality of use. Therefore, a self-weighting multifunctional seat chassis with adjustable elasticity is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing technologies, such as inconvenient seat chassis adjustment and limited adjustment range, fixed elastic design that is difficult to match different weights and sitting postures, easy to cause shaking and abnormal noise during dynamic use, lack of personalized adaptation capability, and inability to provide stable dynamic support, which seriously affects the comfort and functionality of use. The proposed invention is a self-weighting multi-functional seat chassis with gear-type elastic adjustment.

[0005] The utility model solves its technical problem adopts the technical scheme: a human body elastic self -adaptation line control chassis, including base, its characterized in be that the base one side is installed with the warped board, the other side is installed with movable board, the base top is installed with bottom plate, the base is installed with fixed plate in, the fixed plate is installed with the taper pipe in, the fixed plate is installed with locking soldering piece, the locking soldering piece surface is installed with locking pin, the locking pin one end is connected with locking torsional spring and is matched with fixed plate, the locking torsional spring one end is connected with locking torsional block, the locking torsional block one end is connected with locking pull wire, and the other end is connected with elastic regulating handle, the locking pin one end is in proper order and is connected with the reset spring that the warped board and base are penetrated and are equipped with, one side of the fixed plate is equipped with the lifting pressure plate, the lifting pressure plate one end is installed with lifting pull wire, and the lifting pull wire is equipped with lifting pressure spring with the connecting place of lifting pressure plate. Dynamic adaptability: the linkage design of warped board and movable board can automatically sense human posture change, passes through torsional spring and pull wire transmission pressure, realizes the real -time self -adaptation adjustment of chassis elasticity;One -key adjustment: elastic regulating handle passes through line control mechanism remote control locking pin's locking / release, and user need not bend the waist and can quickly adjust chassis hardness;Stability enhancement: the cooperation of taper pipe and fixed plate promotes chassis torsional stiffness, prevents the lateral deviation caused by human movement.

[0006] Preferably, the bottom plate is provided with a backrest mounting block on one side, the backrest mounting block is internally provided with a tension compression spring, and the tension compression spring is connected with a tension pull wire at one end. The tension of the backrest is linked with the elasticity of the chassis through the pull wire, and when the hardness of the chassis is adjusted, the support force of the backrest changes synchronously, thereby maintaining the natural curvature of the human spine.

[0007] Preferably, the bottom plate is provided with a sliding plate on the top, the sliding plate is provided with mounting sliding grooves, the number of the mounting sliding grooves is four and they are arranged in diagonal correspondence, the mounting sliding grooves are provided with adjustable bolts, and the adjustable bolts are associated with the bottom plate. The sliding groove design allows the adaptation of different sizes of upper seat structures, and the structures can be quickly fixed or disassembled through the bolts, thereby facilitating customized modification; the diagonal distribution of the sliding grooves uniformly disperses the pressure, thereby preventing uneven force on one side from causing the chassis to tilt.

[0008] Preferably, the base, the hinged plate, the movable plate and the bottom plate are sequentially provided with a first rivet, a second rivet, a third rivet, a fourth rivet, a fifth rivet and a sixth rivet, the first rivet and the second rivet are matched with the hinged plate, the base and the bottom plate, the fourth rivet and the fifth rivet are matched with the movable plate and the base, and the third rivet and the sixth rivet are matched with the base, the hinged plate, the movable plate and the bottom plate; the second rivet is provided with a first long bushing, the first long bushing is provided with a first torsion spring, the first torsion spring is matched with the first rivet, the second rivet is provided with a first long bushing, the first long bushing is provided with a first torsion spring, one end of the first torsion spring is in abutment with the first rivet, the fifth rivet is provided with a second long bushing, the second long bushing is provided with a second torsion spring, one end of the second torsion spring is in abutment with the sixth rivet, and the other end is provided with a clamping block. Multi-axis point buffering: the torsion spring forms an elastic support point at the rivet node, so that the hinged plate and the movable plate can be slightly swung at multiple angles to adapt to the subtle movements of the hips and thighs; anti-loosening design: the abutment structure of the clamping block and the torsion spring prevents the rivet from loosening under high-frequency vibration, prolonging the service life.

[0009] Preferably, the top surface of the bottom plate is provided with a buffer interval groove, the buffer interval groove is provided with a buffer tension spring, one end of the buffer tension spring is matched with the bottom plate, and the other end is matched with the sliding plate. The tension spring forms a secondary buffer layer between the bottom plate and the seat, reducing the rigid vibration when suddenly sitting down or standing up; the elastic connection reduces the abnormal sound generated by the direct collision of metal parts.

[0010] The utility model has the advantages that:

[0011] The utility model discloses a bottom plate, a hinged plate, a movable plate and a torsion spring linkage, adjusting the elasticity of the bottom plate according to different conditions, ensuring that different users of different body shapes can obtain comfortable support; through the elasticity adjusting handle and the locking pull wire, the user can easily adjust the hardness of the bottom plate without bending over or leaving the seat; the tension pull wire is connected with the backrest, and when the elasticity of the bottom plate changes, the support force of the backrest is adjusted synchronously to maintain the natural curvature of the spine; the lifting compression spring and the buffer tension spring form a composite buffer system to absorb the impact force of sudden sitting, standing or bumpy road conditions and reduce vibration transmission; the tapered pipe and the fixed plate cooperate to enhance the anti-torsion ability and prevent the bottom plate from tilting or deviating due to lateral stress; the installation of the sliding groove and the adjustable bolt design enables the bottom plate to quickly match different sizes of seats or backrests, facilitating customized modification; the wear-resistant structure of the rivet and the bushing reduces metal wear and tear, and frequent lubrication or replacement of parts is not required during long-term use; the elastic connection of the torsion spring and the tension spring reduces the direct contact of rigid parts, effectively suppressing abnormal sound; the abutment structure of the clamping block and the torsion spring prevents the rivet from loosening due to high-frequency vibration, prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0013] Figure 1 It is an explosion structure schematic diagram of the present application.

[0014] Figure 2 It is a force adjusting structure schematic diagram of the present application.

[0015] Figure 3 It is a control unlocking structure schematic diagram of the present application Figure 2 It is a sectional view of F1-F1.

[0016] Figure 4 It is an initial control locking structure schematic diagram of the present application.

[0017] Figure 5 It is a rear leaning structure schematic diagram of the present application Figure 4 It is a sectional view of F2-F2.

[0018] Figure 6 It is a rear leaning structure schematic diagram of the present application

[0019] Figure 7 It is a rear leaning structure schematic diagram of the present application

[0020] Figure 8 It is a control unlocking structure schematic diagram of the present application

[0021] In the figure: 1, adjustable bolt; 2, tight pull wire; 3, sliding plate; 4, tight compression spring; 5, backrest mounting block; 6, buffer tension spring; 7, buffer interval slot; 8, taper pipe; 9, bottom plate; 10, sixth rivet; 11, third rivet; 12, first long bushing; 13, second long bushing; 14, first torsion spring; 15, second torsion spring; 16, locking pin; 17, reset spring; 18, fixed plate; 19, locking welding piece; 20, locking torsion spring; 21, lifting pressure plate; 22, lifting compression spring; 23, rocker plate; 24, first rivet; 25, second rivet; 26, clamping block; 27, locking torsion block; 28, movable plate; 29, fourth rivet; 30, fifth rivet; 31, locking pull wire; 32, elastic force adjusting handle; 33, lifting pull wire; 34, base. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Embodiment

[0024] Please refer to Figures 1-8 As shown in FIG. 1, a human body elastic self-adaptive drive-by-wire chassis comprises a base 34, characterized in that one side of the base 34 is provided with a rocker 23, and the other side is provided with a movable plate 28; the top of the base 34 is provided with a bottom plate 9; the inside of the base 34 is provided with a fixed plate 18; the inside of the fixed plate 18 is provided with a taper pipe 8; the fixed plate 18 is provided with a locking tab 19; the surface of the locking tab 19 is provided with a locking pin 16; one end of the locking pin 16 is connected with a locking torsional spring 20 and cooperates with the fixed plate 18; one end of the locking torsional spring 20 is connected with a locking torsional block 27; one end of the locking torsional block 27 is connected with a locking pull wire 31, and the other end is connected with an elastic adjustment handle 32; one end of the locking pin 16 penetrates the rocker 23 and the base 34 in sequence, and the connecting part is provided with a return spring 17; one side of the fixed plate 18 is provided with a lifting pressure plate 21; one end of the lifting pressure plate 21 is provided with a lifting pull wire 33; the connecting part of the lifting pull wire 33 and the lifting pressure plate 21 is provided with a lifting pressure spring 22. Dynamic adaptability: the linkage design of the rocker 23 and the movable plate 28 can automatically sense the change of human sitting posture, and the pressure is transmitted through the torsional spring and the pull wire to realize the real-time self-adaptive adjustment of the chassis elasticity; one-key adjustment: the elastic adjustment handle 32 remotely controls the locking / release of the locking pin 16 through the drive-by-wire mechanism, and the user can quickly adjust the hardness of the chassis without bending over; stability enhancement: the cooperation of the taper pipe 8 and the fixed plate 18 improves the anti-torsion ability of the chassis to prevent lateral deviation caused by human movement.

[0025] In the embodiment, one side of the bottom plate 9 is provided with a backrest mounting block 5, the inside of the backrest mounting block 5 is provided with a tension compression spring 4, and one end of the tension compression spring 4 is connected with a tension pull wire 2. The tension of the backrest is linked with the chassis elasticity through the pull wire, and when the hardness of the chassis is adjusted, the backrest supporting force changes synchronously to maintain the natural curvature of the human spine.

[0026] In this embodiment, the bottom plate 9 is provided with a sliding plate 3 on the top, and the sliding plate 3 is provided with a mounting sliding groove, the number of the mounting sliding grooves is four and they are arranged in diagonal correspondence, the mounting sliding grooves are provided with adjustable bolts 1, and the adjustable bolts 1 are associated with the bottom plate 9. The design of the sliding groove allows the adaptation of different sizes of the upper seat structure, and the quick fixing or dismounting through the bolts facilitates the customization of the modification; the diagonal distribution of the sliding grooves uniformly disperses the pressure, preventing the uneven force on one side from causing the chassis to tilt.

[0027] In this embodiment, the base 34, the warped plate 23, the movable plate 28 and the bottom plate 9 are sequentially provided with a first rivet 24, a second rivet 25, a third rivet 11, a fourth rivet 29, a fifth rivet 30 and a sixth rivet 10, the first rivet 24 and the second rivet 25 are matched with the warped plate 23, the base 34 and the bottom plate 9, the fourth rivet 29 and the fifth rivet 30 are matched with the movable plate 28 and the base 34, and the third rivet 11 and the sixth rivet 10 are matched with the base 34, the warped plate 23, the movable plate 28 and the bottom plate 9; the second rivet 25 is provided with a first long bushing 12, the first long bushing 12 is provided with a first torsion spring 14, the first torsion spring 14 is matched with the first rivet 24, the second rivet 25 is provided with a first long bushing 12, the first long bushing 12 is provided with a first torsion spring 14, one end of the first torsion spring 14 is in abutment with the first rivet 24, the fifth rivet 30 is provided with a second long bushing 13, the second long bushing 13 is provided with a second torsion spring 15, one end of the second torsion spring 15 is in abutment with the sixth rivet 10, and the other end is provided with a clamping block 26. Multi-axis point buffering: the torsion spring forms an elastic fulcrum at the rivet node, allowing the warped plate 23 and the movable plate 28 to swing at multiple angles and in a small range, adapting to the subtle movements of the hips and thighs; anti-loosening design: the abutment structure of the clamping block 26 and the torsion spring prevents the rivet from loosening under high-frequency vibration, prolonging the service life.

[0028] In this embodiment, the top surface of the bottom plate 9 is provided with a buffer interval groove 7, and the buffer interval groove 7 is provided with a buffer tension spring 6, one end of the buffer tension spring 6 is matched with the bottom plate 9, and the other end is matched with the sliding plate 3. The tension spring forms a secondary buffer layer between the chassis and the seat, reducing the rigid vibration when suddenly sitting or standing up; elastic connection reduces the abnormal sound caused by the direct collision of metal parts.

[0029] The implementation principle of this embodiment is:

[0030] The chassis is in a free floating state, the flap 23 and the movable plate 28 can swing slightly up and down, the locking pin 16 is kept in the default position under the action of the reset spring 17, and the chassis is not locked, when a person sits down, the hip weight is pressed on the bottom plate 9, the flap 23 is pushed to move downwards, the flap 23 drives the locking pin 16 to compress the reset spring 17, and at the same time, the locking torsional spring 20 starts to be stressed, the user rotates the elastic adjusting handle 32, pulls the locking pull wire 31, and the locking pull wire 31 drives the locking torsional block 27 to change the tightness of the locking torsional spring 20.

[0031] If the locking torsional spring 20 is tightened (hardened), the locking torsional spring 20 will exert greater resistance, the locking pin 16 is more firmly clamped on the flap 23, and the chassis support is hardened, if the locking torsional spring 20 is loosened (softened), the resistance of the locking torsional spring 20 is reduced, the locking pin 16 allows the flap 23 to have more floating space, and the chassis is softened; the chassis is connected with the backrest, and the tightness of the tightness spring 4 in the backrest mounting block 5 is adjusted synchronously, so that the backrest support force is matched with the chassis.

[0032] When the seat height needs to be adjusted, the flap 23 and the movable plate 28 are quickly pressed downwards when suddenly sitting down or encountering bumps, but the lifting compression spring 22 and the buffer tension spring 6 immediately absorb the impact force, the buffer tension spring 6 is telescopic in the buffer interval slot 7, the pressure is dispersed, hard impact is avoided, the taper pipe 8 and the fixed plate 18 cooperate to limit the horizontal shaking of the chassis, and it is ensured that the chassis will not be deviated even if it is subjected to lateral force (such as reclining or sharp turning), the user pulls the lifting pull wire 33, the lifting pull wire 33 drives the lifting pressure plate 21 to change the height of the fixed plate 18, the lifting compression spring 22 provides resistance to ensure that the lifting process is stable and will not suddenly fall, after adjustment, the locking welding piece 19 and the locking pin 16 fix the new height to prevent sliding.

[0033] When different seats are installed: the installation sliding groove is adjusted, the sliding plate 3 is connected with the seat through the four diagonal installation sliding grooves, the adjustable bolt 1 is loosened, the chassis is slid to the appropriate position, and then is tightened and fixed.

[0034] In the description of the present specification, the description of the terms “one embodiment”, “example”, “specific example” and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A self-weighting multi-functional seat chassis with adjustable elasticity and gear position, comprising a base (34), characterized in that, A rocker arm (23) is installed on one side of the base (34), and a movable plate (28) is installed on the other side. A base plate (9) is installed on the top of the base (34). A fixed plate (18) is installed inside the base (34). A tapered tube (8) is installed inside the fixed plate (18). A locking plate (19) is installed on the fixed plate (18). A locking pin (16) is installed on the surface of the locking plate (19). One end of the locking pin (16) is connected to a locking torsion spring (20) and cooperates with the fixed plate (18). (20) One end is connected to a locking torsion block (27), one end of which is connected to a locking pull wire (31), and the other end is connected to a spring adjustment handle (32). One end of the locking pin (16) passes through the rocker (23) and the base (34) in sequence, and a return spring (17) is provided at the connection. A lifting pressure plate (21) is provided on one side of the fixed plate (18). A lifting pull wire (33) is installed at one end of the lifting pressure plate (21), and a lifting pressure spring (22) is provided at the connection between the lifting pull wire (33) and the lifting pressure plate (21).

2. The self-weighting multi-functional seat chassis with adjustable elasticity and gear-type design according to claim 1, characterized in that, A backrest mounting block (5) is installed on one side of the base plate (9). The backrest mounting block (5) is provided with a tension spring (4), and one end of the tension spring (4) is connected to a tension cable (2).

3. The self-weighting multi-functional seat chassis with adjustable elasticity and gear-type design according to claim 1, characterized in that, The base plate (9) is equipped with a sliding plate (3) on top. The sliding plate (3) is provided with mounting grooves. There are 4 mounting grooves, which are diagonally arranged. The mounting grooves are provided with adjustable bolts (1), which are associated with the base plate (9).

4. The self-weighting multi-functional seat chassis with adjustable elasticity and gear-type design according to claim 1, characterized in that, A first rivet (24), a second rivet (25), a third rivet (11), a fourth rivet (29), a fifth rivet (30), and a sixth rivet (10) are sequentially provided between the base (34), the rocker (23), the movable plate (28), and the bottom plate (9). The first rivet (24) and the second rivet (25) cooperate with the rocker (23), the base (34), and the bottom plate (9). The fourth rivet (29) and the fifth rivet (30) cooperate with the movable plate (28) and the base (34). The third rivet (11) and the sixth rivet (10) cooperate with the base (34), the rocker (23), the movable plate (28), and the bottom plate (9).

5. The self-weighting multi-functional seat chassis with adjustable elasticity and gear-type design according to claim 4, characterized in that, The second rivet (25) is provided with a first long bushing (12), the first long bushing (12) is provided with a first torsion spring (14), the first torsion spring (14) cooperates with the first rivet (24), the second rivet (25) is provided with a first long bushing (12), the first long bushing (12) is provided with a first torsion spring (14), one end of the first torsion spring (14) abuts against the first rivet (24), the fifth rivet (30) is provided with a second long bushing (13), the second long bushing (13) is provided with a second torsion spring (15), one end of the second torsion spring (15) abuts against the sixth rivet (10), and the other end is provided with a locking block (26).

6. The self-weighting multi-functional seat chassis with adjustable elasticity and gear-type design according to claim 3, characterized in that, The top surface of the base plate (9) is provided with a buffer groove (7), and a buffer spring (6) is provided on the buffer groove (7). One end of the buffer spring (6) is engaged with the base plate (9), and the other end is engaged with the slide plate (3).

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