Seat posture adjusting mechanism

Abstract

The utility model belongs to the technical field of seat posture adjustment, and discloses a seat posture adjusting mechanism which comprises a base, a backrest and an adjusting assembly, the adjusting assembly comprises fixing structures and connecting structures, the backrest is movably connected with the end of the base through the connecting structures, the fixing structures are symmetrically installed on the two sides of the base, and the connecting structures are movably connected with the fixing structures through the connecting structures. The sliding plate, the handrails, the embedding grooves and the like are arranged, during adjustment, the sliding plate only needs to be pulled outwards, the limiting holes are forced to be separated from the inner walls of the embedding grooves, the handrails are embedded into the fixing structures, the handrails are embedded into the fixing structures, and the fixing structures are used for controlling the movement range of the backrest. After the fixing between the adjusting cylinder and the armrest is released, the backrest is shifted to rotate on the connecting plate, so that the purpose of adjusting the included angle between the backrest and the base in a small range is achieved, and the problem that the current seat can only perform single height adjustment and cannot adjust the backrest is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat posture adjustment, and in particular relates to a seat posture adjustment mechanism. Background Art

[0002] Currently, most of the household castor seats on the market have a fixed connection between the base and the backrest and cannot be adjusted. Therefore, the seat can only be adjusted in height, and the inclination angle of the backrest cannot be adjusted, which greatly limits the comfort of the seat. Therefore, a seat posture adjustment mechanism is designed to solve the problem that the current seat can only be adjusted in height, and the backrest cannot be adjusted. Utility Model Content

[0003] The utility model aims to provide a seat posture adjustment mechanism to solve the problem in the background art that the current seat can only be adjusted in height but cannot adjust the backrest.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat posture adjustment mechanism includes a base, a backrest and an adjustment component, the adjustment component includes a fixed structure and a connecting structure, the backrest and the end of the base are movably connected through the connecting structure, and the fixed structure is symmetrically installed on both sides of the base, and armrests are symmetrically installed on both sides of the backrest, the armrests are L-shaped, and the armrests are embedded in the fixed structure, and the fixed structure is used to control the range of movement of the backrest.

[0005] Preferably, the connection structure includes a rotating plate and a connecting plate, and the base and one side end surface of the backrest are symmetrically installed with the connecting plate and the rotating plate, respectively. A movable rod is connected between the rotating plates, the connecting plate is located between the rotating plates, and the movable rod passes through the connecting plate.

[0006] Preferably, the fixed structure includes an adjusting cylinder, a sliding plate, an engaging groove and a spring, the adjusting cylinder is symmetrically installed on both sides of the outer wall of the base, and a sliding plate is slidably arranged inside the adjusting cylinder, the end of the sliding plate is connected to the bottom of the inner wall of the adjusting cylinder by a spring, limiting holes are provided on the surface of the sliding plate and on the upper and lower sides of the inner wall of the adjusting cylinder, engaging grooves are symmetrically provided at equal intervals on the lower part of the armrest surface, and the armrest passes through the adjusting cylinder and the sliding plate through the limiting holes, and the inner wall of the engaging groove is in contact with the inner wall of the limiting hole.

[0007] Preferably, an auxiliary plate is installed on the front end surface of the sliding plate, and a through hole is opened in the middle of the surface of the auxiliary plate.

[0008] Preferably, movable plates are symmetrically installed at the bottom of the rear end surface of the backrest, rotating rods are connected between the movable plates, supporting plates are sleeved on the rotating rods, and the top end surface of the supporting plate is wrapped with an anti-slip layer.

[0009] Preferably, magnetic strips are installed on the inner part of one side of the support plate away from the movable plate and on the middle part of the rear end surface of the backrest, and the magnetic strips are used to shorten the distance between the support plate and the backrest.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model is provided with a sliding plate, an armrest and an engaging groove, etc., and when adjusting, it is only necessary to pull the sliding plate outward to force the limit hole to disengage from the inner wall of the engaging groove, release the fixation between the adjustment tube and the armrest, and then move the backrest to make it rotate on the connecting plate, thereby achieving the purpose of adjusting the angle between the backrest and the base in a small range, thereby solving the problem that the current seat can only be adjusted in height and the backrest cannot be adjusted.

[0012] (2) The utility model is provided with a support plate, an anti-skid layer and a movable plate. After the backrest is adjusted and fixed, the support plate is manually moved to rotate on the movable plate, forcing the anti-skid layer at the end of the support plate to contact the ground. When in use, the downward pressure generated by leaning on the backrest will be converted into a thrust for the support plate to slide forward, and then the static friction between the anti-skid layer and the ground will be used to offset it, thereby achieving the effect of auxiliary support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a rear view of the utility model;

[0015] Figure 3 It is the front view of the utility model;

[0016] In the figure: 1. magnetic strip; 2. armrest; 3. base; 4. limit hole; 5. sliding plate; 6. spring; 7. adjustment cylinder; 8. connecting plate; 9. rotating plate; 10. movable plate; 11. support plate; 12. anti-slip layer; 13. backrest; 14. fitting groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 and Figure 3As shown, the utility model provides the following technical solutions: a seat posture adjustment mechanism includes a base 3, a backrest 13 and an adjustment component, the adjustment component includes a fixed structure and a connecting structure, the backrest 13 and the end of the base 3 are movably connected through the connecting structure, and the base 3 is symmetrically installed with fixed structures on both sides, and armrests 2 are symmetrically installed on both sides of the backrest 13. The armrests 2 are L-shaped and embedded in the fixed structure. The fixed structure is used to control the range of movement of the backrest 13. The connecting structure includes a rotating plate 9 and a connecting plate 8. The base 3 and one side end surface of the backrest 13 are symmetrically installed with the connecting plate 8 and the rotating plate 9, and the rotating plates 9 are connected A movable rod is provided, and a connecting plate 8 is located between the rotating plates 9. The movable rod passes through the connecting plate 8. The fixed structure includes an adjusting cylinder 7, a sliding plate 5, an engaging groove 14 and a spring 6. The adjusting cylinder 7 is symmetrically installed on both sides of the outer wall of the base 3, and a sliding plate 5 is slidably provided inside the adjusting cylinder 7. The end of the sliding plate 5 is connected to the bottom of the inner wall of the adjusting cylinder 7 by a spring 6. Limiting holes 4 are provided on the surface of the sliding plate 5 and on the upper and lower sides of the inner wall of the adjusting cylinder 7. Engaging grooves 14 are symmetrically provided at equal intervals on the lower part of the surface of the handrail 2, and the handrail 2 passes through the adjusting cylinder 7 and the sliding plate 5 through the limiting holes 4. The inner wall of the engaging groove 14 is in contact with the inner wall of the limiting hole 4.

[0019] Through the above technical solution: when adjusting, it is only necessary to pull the sliding plate 5 outward to force the limiting hole 4 to disengage from the inner wall of the engaging groove 14, and then release the fixation between the adjusting cylinder 7 and the armrest 2, and then move the backrest 13 to make it rotate on the connecting plate 8. At this time, the armrest 2 also moves up in the limiting hole 4. When the other engaging groove 14 moves to the inside of the limiting hole 4, the rebound force of the spring 6 is used to force the sliding plate 5 to reset, so that the limiting hole 4 is re-engaged with the other engaging groove 14, and then the position of the backrest 13 is re-fixed, thereby achieving the purpose of adjusting the angle between the backrest 13 and the base 3 in a small range, which solves the problem that the current seat can only perform a single height adjustment and the backrest 13 cannot be adjusted.

[0020] See also Figure 1-Figure 3 As shown, an auxiliary plate is installed on the front end face of the sliding plate 5, a through hole is opened in the middle of the surface of the auxiliary plate, a movable plate 10 is symmetrically installed on the bottom of the rear end face of the backrest 13, a rotating rod is connected between the movable plates 10, a support plate 11 is sleeved on the rotating rod, the top end face of the support plate 11 is wrapped with an anti-slip layer 12, a magnetic strip 1 is installed on the inside of the side of the support plate 11 away from the movable plate 10 and in the middle of the rear end face of the backrest 13, the magnetic strip 1 is used to shorten the distance between the support plate 11 and the backrest 13.

[0021] Through the above technical solution: after the backrest 13 is adjusted and fixed, the support plate 11 is manually moved to rotate on the rotating rod, thereby increasing the distance between the support plate 11 and the backrest 13 and forcing the anti-skid layer 12 at the end of the support plate 11 to contact the ground. When in use, the downward oblique pressure generated by leaning against the backrest 13 will be converted into a thrust for the support plate 11 to slide forward, and then the static friction between the anti-skid layer 12 and the ground will be used to offset it, thereby achieving the role of auxiliary support. At the same time, the setting of the magnetic strip 1 increases the stability of the connection between the support plate 11 and the backrest 13, while increasing the convenience of the user to directly adjust the support plate 11 when riding. Combined with the auxiliary plate installed at the front end of the sliding plate 5, the user can achieve the purpose of quick adjustment without leaving the seat.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seat posture adjustment mechanism, characterized in that: The invention comprises a base (3), a backrest (13) and an adjustment component, wherein the adjustment component comprises a fixing structure and a connecting structure, the backrest (13) is movably connected to the end of the base (3) via the connecting structure, and the fixing structure is symmetrically installed on both sides of the base (3), and armrests (2) are symmetrically installed on both sides of the backrest (13), wherein the armrests (2) are L-shaped and embedded in the fixing structure, and the fixing structure is used to control the range of motion of the backrest (13).

2. A seat posture adjustment mechanism according to claim 1, characterized in that: The connection structure comprises a rotating plate (9) and a connecting plate (8); the connecting plate (8) and the rotating plate (9) are symmetrically mounted on one side end surface of the base (3) and the backrest (13); a movable rod is connected between the rotating plates (9); the connecting plate (8) is located between the rotating plates (9), and the movable rod passes through the connecting plate (8).

3. A seat posture adjustment mechanism according to claim 1, characterized in that: The fixing structure comprises an adjusting cylinder (7), a sliding plate (5), an engaging groove (14) and a spring (6); the adjusting cylinder (7) is symmetrically mounted on both sides of the outer wall of the base (3); a sliding plate (5) is slidably arranged inside the adjusting cylinder (7); an end of the sliding plate (5) is connected to the bottom of the inner wall of the adjusting cylinder (7) via a spring (6); limiting holes (4) are provided on the surface of the sliding plate (5) and on both upper and lower sides of the inner wall of the adjusting cylinder (7); engaging grooves (14) are symmetrically provided at equal intervals on the lower part of the surface of the handrail (2); the handrail (2) passes through the adjusting cylinder (7) and the sliding plate (5) through the limiting holes (4); the inner wall of the engaging groove (14) is in contact with the inner wall of the limiting hole (4).

4. A seat posture adjustment mechanism according to claim 3, characterized in that: An auxiliary plate is installed on the front end surface of the sliding plate (5), and a through hole is opened in the middle of the surface of the auxiliary plate.

5. The seat posture adjustment mechanism according to claim 3, characterized in that: A movable plate (10) is symmetrically mounted at the bottom of the rear end surface of the backrest (13); a rotating rod is connected between the movable plates (10); a support plate (11) is sleeved on the rotating rod; and a top end surface of the support plate (11) is wrapped with an anti-slip layer (12).

6. A seat posture adjustment mechanism according to claim 5, characterized in that: A magnetic strip (1) is installed inside the side of the support plate (11) away from the movable plate (10) and in the middle of the rear end surface of the backrest (13). The magnetic strip (1) is used to shorten the distance between the support plate (11) and the backrest (13).

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