Seat-back synchronous linkage auditorium chair

Abstract

The utility model provides a seat-back synchronous linkage auditorium chair which comprises a bottom plate, a handrail fixedly installed on the top face of the bottom plate, a fixing shaft and a connecting shaft fixedly connected to the side wall of the handrail respectively, a first sleeve shaft rotationally connected to the surface of the fixing shaft, the fixing shaft is connected with the first sleeve shaft through a torsional spring, and the first sleeve shaft is fixedly connected with the bottom of a cushion. The bottom of the cushion is fixedly connected with the guide rod, and the end of the first sleeve shaft is movably connected with the guide rod through a linkage mechanism. The seat cushion, the backrest and the armrests are mounted to form the auditorium chair, the backrest and the armrests can be folded during use, the width between adjacent rows of the auditorium chair can be increased, the linkage mechanism is arranged between the backrest and the armrests, the backrest can be synchronously folded when the seat cushion is stored, rapid operation is facilitated, and the use safety of the auditorium chair is improved. The use convenience of the auditorium chair is improved, the limiting shafts are arranged to achieve limiting of the seat and the backrest, meanwhile, the folding problem of the auditorium chair in the use process can be prevented, and the use performance of the auditorium chair is improved.

Description

Technical Field

[0001] The utility model relates to an auditorium chair with synchronous linkage of seat and back, belonging to the technical field of auditorium chairs. Background Art

[0002] Auditorium chairs are designed for auditoriums, cinemas, conference halls, lecture halls and other places. They not only have basic components such as seats, backs, armrests and legs, but also often incorporate some practical configurations to meet the needs of different occasions. The legs and armrests are usually integrated to form a firmly installed armrest frame. The composition structure is generally steel-wood structure, steel-plastic structure or aluminum-wood structure to ensure the stability and durability of the seats. The materials of auditorium chairs are diverse, commonly including plastics, woods, fabrics and stainless steels. Auditorium chairs made of different materials have their own characteristics in terms of appearance, comfort and durability. Auditorium chairs are widely used in various occasions where centralized seating is required, such as auditoriums, cinemas, conference halls, lecture halls, amphitheaters, meeting rooms, etc. They not only provide a comfortable seating experience for the audience, but also improve the overall use effect of the venue through practical configurations and user-friendly designs.

[0003] Most auditorium chairs are composed of five parts: seats, backs, armrests, writing boards and legs. In order to obtain more space between adjacent rows of existing auditorium chairs, the seats and backs are usually designed to be foldable, but usually they are operated separately. During actual use, the seats and backs need to be opened sequentially for use, and it is not easy to store the seats and backs simultaneously after use, which reduces the inconvenience of using auditorium chairs. Content of the Utility Model

[0004] The utility model provides an auditorium chair with synchronous linkage of seat and back to solve the technical problem that the seats and backs of auditorium chairs are not easy to be stored synchronously.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides an auditorium chair with synchronous linkage of seat and back, including:

[0007] A bottom plate, on the top surface of which an armrest is fixedly installed. Fixed shafts and connecting shafts are respectively fixedly connected to the side walls of the armrest. A first sleeve is rotatably connected to the surface of the fixed shaft, and the fixed shaft is connected to the first sleeve through a torsion spring. The first sleeve is fixedly connected to the bottom of the seat cushion. The bottom of the seat cushion on one side of the first sleeve is fixedly connected to a guide rod. A second sleeve is rotatably connected to the surface of the connecting shaft, and the second sleeve is fixedly connected to the side wall of the backrest. And the end of the first sleeve is movably connected to the guide rod through a linkage mechanism.

[0008] In this technical solution, two symmetrically distributed armrests are provided on the top of the bottom plate. A guide rail is fixedly connected to the side wall of each armrest. The guide rail is of an arc structure, and the center of the arc where the guide rail is located coincides with the axis of the fixed shaft.

[0009] In this technical solution, the seat cushion is correspondingly arranged below the backrest. Both ends of the guide rod at the bottom of the seat cushion extend to the outside of the seat cushion, and the guide rod is slidably connected to the inside of the guide rail.

[0010] In this technical solution, limiting shafts are fixedly connected to the top and the inner wall of the side end of the armrest. The limiting shafts are respectively located on one side of the backrest and below the seat cushion.

[0011] In this technical solution, both ends of the second sleeve shaft extend to both sides of the backrest, and connecting rods are fixedly connected to the ends of the second sleeve shafts located on both sides of the backrest.

[0012] In this technical solution, the linkage mechanism includes a movable rod and a sleeve. One end of the movable rod is rotatably connected to the end of the connecting rod, the other end of the movable rod is fixedly connected to the end head, and both the movable rod and the end head extend into the sleeve.

[0013] In the sleeve, the end head is slidably connected. A spring is fixedly connected to the surface of the end head. The spring is sleeved on the movable rod. The bottom of the sleeve is rotatably connected to the connecting piece, and the connecting piece is fixedly connected to the end of the guide rod.

[0014] In this technical solution, the number of the linkage mechanisms is two. The two linkage mechanisms are symmetrically distributed on both sides of the backrest, and the two linkage mechanisms are located between the two armrests.

[0015] In this technical solution, the surface of the limiting shaft is rotatably connected to a hook. The number of the hooks is two, and the two hooks are symmetrically distributed on both sides of the seat cushion.

[0016] In this technical solution, the side end of the seat cushion is fixedly connected to a hanging rod, and the surface of the hanging rod is hooked to the hook.

[0017] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0018] The positive and progressive effects of the present invention are as follows:

[0019] The above-mentioned auditorium chair with seat-back synchronous linkage uses a seat cushion, as well as the installation of the backrest and armrests to form the auditorium chair. It can perform the folding operation of the backrest and armrests during use, which can increase the width between adjacent rows of auditorium chairs. A linkage mechanism is provided between the backrest and the armrests, which can synchronously fold the backrest when the seat cushion is stored, facilitating quick operation, improving the usability of the auditorium chair, and setting a limiting shaft to limit the seat and the backrest, ensuring stability during use. At the same time, it can prevent the folding problem of the auditorium chair during use and improve the performance of the auditorium chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic perspective view of the overall structure of the present invention.

[0021] Figure 2 FIG. is a schematic perspective view of the seat cushion part of the present invention.

[0022] Figure 3 FIG. is a schematic internal structure view of the sleeve part of the present invention.

[0023] Figure 4 FIG. is a schematic top view of the present invention.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS

[0025] 1, bottom plate; 2, armrest; 3, guide rail; 4, fixed shaft; 5, first sleeve shaft; 6, seat cushion; 7, guide rod; 8, connecting shaft; 9, second sleeve shaft; 10, backrest; 11, connecting rod; 12, movable rod; 13, end; 14, spring; 15, sleeve; 16, connecting piece; 17, limiting shaft; 18, hook; 19, hanging rod. DETAILED DESCRIPTION OF THE INVENTION

[0026] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples.

[0027] As Figures 1-4 shown, the above-mentioned auditorium chair with seat-back synchronous linkage includes:

[0028] A bottom plate 1, on the top surface of which an armrest 2 is fixedly installed. Fixed shafts 4 and connecting shafts 8 are respectively fixedly connected to the side walls of the armrest 2. A first sleeve shaft 5 is rotatably connected to the surface of the fixed shaft 4. The fixed shaft 4 is connected to the first sleeve shaft 5 through a torsion spring. The first sleeve shaft 5 is fixedly connected to the bottom of the seat cushion 6. The bottom of the seat cushion 6 on one side of the first sleeve shaft 5 is fixedly connected to a guide rod 7. A second sleeve shaft 9 is rotatably connected to the surface of the connecting shaft 8. The second sleeve shaft 9 is fixedly connected to the side wall of the backrest 10. And the end of the first sleeve shaft 5 is movably connected to the guide rod 7 through a linkage mechanism.

[0029] Two symmetrically distributed armrests 2 are provided on the top of the bottom plate 1. Guide rails 3 are fixedly connected to the side walls of each armrest 2. The guide rails 3 are arc-shaped structures, and the center of the arc where the guide rails 3 are located coincides with the axis of the fixed shaft 4. The seat cushion 6 is correspondingly arranged below the backrest 10. Both ends of the guide rod 7 at the bottom of the seat cushion 6 extend to the outside of the seat cushion 6, and the guide rod 7 is slidably connected to the inside of the guide rail 3.

[0030] In this technical solution, the armrest 2 is installed on the bottom plate 1 to play a role in supporting the arm, and the guide rail 3 is provided for guiding when the seat cushion 6 rotates, ensuring the stable rotation of the seat cushion 6. When the seat cushion 6 rotates around the fixed shaft 4, it can drive the guide rod 7 to move inside the guide rail 3, and at the same time, it can be limited in position after rotating in place, ensuring the stability during use.

[0031] Limit shafts 17 are fixedly connected to the top and the inner wall of the side end of the armrest 2. The limit shafts 17 are respectively located on one side of the backrest 10 and below the seat cushion 6. Both ends of the second sleeve shaft 9 extend to both sides of the backrest 10, and connecting rods 11 are fixedly connected to the ends of the second sleeve shaft 9 located on both sides of the backrest 10.

[0032] In this technical solution, when rotating the seat cushion 6, it drives the first sleeve shaft 5 to rotate on the surface of the fixed shaft 4. The seat cushion 6 drives the guide rod 7 to move to the top of the guide rail 3, and the guide rod 7 is limited by the guide rail 3. At the same time, the seat cushion 6 moves to the limit shaft 17 to realize the support of the seat cushion 6. When rotating the backrest 10, it drives the second sleeve shaft 9 to move on the surface of the connecting shaft 8, and at the same time, it fits on another limit shaft 17, thereby realizing the limit of the backrest 10.

[0033] The linkage mechanism includes a movable rod 12 and a sleeve 15. One end of the movable rod 12 is rotatably connected to the end of the connecting rod 11. The other end of the movable rod 12 is fixedly connected to the end head 13, and both the movable rod 12 and the end head 13 extend into the sleeve 15. The inside of the sleeve 15 is slidably connected to the end head 13. A spring 14 is fixedly connected to the surface of the end head 13, and the spring 14 is sleeved on the movable rod 12. The bottom of the sleeve 15 is rotatably connected to the connecting piece 16, and the connecting piece 16 is fixedly connected to the end of the guide rod 7. The number of the linkage mechanisms is two, and the two linkage mechanisms are symmetrically distributed on both sides of the backrest 10, and the two linkage mechanisms are located between the two armrests 2.

[0034] In this technical solution, as Figure 2As shown in the figure, when the backrest 10 and the seat cushion 6 are stored, the rotation of the seat cushion 6 drives the guide rod 7 to move inside the guide rail 3. At the same time, the guide rod 7 moves through the connecting member 16 and the sleeve 15, so that the end 13 slides inside the sleeve 15. At this time, the relative movement between the two will not drive the backrest 10 to rotate. When the end 13 drives the spring 14 to contact the top of the sleeve 15, the guide rod 7 has not yet moved to the bottom of the guide rail 3. When continuing to rotate, the spring 14 abuts against the top of the sleeve 15 and pulls the connecting rod 11 to rotate, so that the connecting rod 11 drives the second sleeve shaft 9 to rotate around the connecting shaft 8, thereby realizing the rotation of the backrest 10. At the same time, the presence of the spring 14 can play a buffering role. When opening, the rotation of the seat cushion 6 moves the end 13 to the bottom of the sleeve 15. At this time, the backrest 10 is pushed to rotate through the movable rod 12, thereby realizing the synchronous linkage of the seat cushion 6 and the backrest 10.

[0035] The surface of the limiting shaft 17 is rotatably connected with the hook 18. The number of the hooks 18 is two, and the two hooks 18 are symmetrically distributed on both sides of the seat cushion 6. The side end of the seat cushion 6 is fixedly connected with the hanging rod 19, and the surface of the hanging rod 19 is hung on the hook 18.

[0036] In this technical solution, after the seat cushion 6 is rotated to the horizontal position, the hook 18 on the limiting shaft 17 is rotated to be hung on the hanging rod 19, thereby realizing the fixation of the seat cushion 6, avoiding the problem of the rotation of the seat cushion 6 when sitting in the inner position of the seat cushion 6, and improving the stability of the auditorium chair during use.

[0037] The present utility model is not limited to the above embodiments. No matter what changes are made in its shape or structure, they all fall within the protection scope of the present utility model. The protection scope of the present utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An auditorium chair with synchronous seat and back linkage, characterized in that: include: A base plate (1), an armrest (2) is fixedly mounted on the top surface of the base plate (1), the side walls of the armrest (2) are respectively fixedly connected with a fixed shaft (4) and a connecting shaft (8), the surface of the fixed shaft (4) is rotatably connected with a first sleeve shaft (5), the fixed shaft (4) is connected to the first sleeve shaft (5) via a torsion spring, the first sleeve shaft (5) is fixedly connected to the bottom of a seat cushion (6), the bottom of the seat cushion (6) located on one side of the first sleeve shaft (5) is fixedly connected to a guide rod (7), the surface of the connecting shaft (8) is rotatably connected with a second sleeve shaft (9), the second sleeve shaft (9) is fixedly connected to the side wall of a backrest (10), and the end of the first sleeve shaft (5) is movably connected to the guide rod (7) via a linkage mechanism.

2. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: Two symmetrically distributed handrails (2) are provided on the top of the base plate (1), and a guide rail (3) is fixedly connected to the side wall of each handrail (2). The guide rail (3) is an arc-shaped structure, and the center of the arc where the guide rail (3) is located coincides with the axis center of the fixed shaft (4).

3. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: The seat cushion (6) is correspondingly arranged below the backrest (10), both ends of the guide rod (7) at the bottom of the seat cushion (6) extend to the outside of the seat cushion (6), and the guide rod (7) is slidably connected to the inside of the guide rail (3).

4. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: The top and the inner wall of the side end of the armrest (2) are fixedly connected to a limiting shaft (17), and the limiting shaft (17) is respectively located on one side of the backrest (10) and below the seat cushion (6).

5. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: Both ends of the second sleeve shaft (9) extend to both sides of the backrest (10), and the ends of the second sleeve shaft (9) located on both sides of the backrest (10) are fixedly connected to connecting rods (11).

6. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: The linkage mechanism comprises a movable rod (12) and a sleeve (15); one end of the movable rod (12) is rotatably connected to the end of the connecting rod (11); the other end of the movable rod (12) is fixedly connected to the end head (13); and both the movable rod (12) and the end head (13) extend into the interior of the sleeve (15).

7. The auditorium chair with synchronous seat and back linkage as claimed in claim 6, characterized in that: The interior of the sleeve (15) is slidably connected to the end head (13), a spring (14) is fixedly connected to the surface of the end head (13), the spring (14) is sleeved with the movable rod (12), the bottom of the sleeve (15) is rotatably connected to the connecting piece (16), and the connecting piece (16) is fixedly connected to the end of the guide rod (7).

8. The auditorium chair with synchronous seat and back linkage as claimed in claim 6, characterized in that: The number of the linkage mechanisms is two, the two linkage mechanisms are symmetrically distributed on both sides of the backrest (10), and the two linkage mechanisms are located between the two armrests (2).

9. The auditorium chair with synchronous seat-back linkage as claimed in claim 4, characterized in that: The surface of the limiting shaft (17) is rotatably connected to the hook (18), the number of the hooks (18) is two, and the two hooks (18) are symmetrically distributed on both sides of the seat cushion (6).

10. The auditorium chair with synchronous seat and back linkage as claimed in claim 1, characterized in that: The side end of the seat cushion (6) is fixedly connected to the hanging rod (19), and the surface of the hanging rod (19) is hung with the hook (18).

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