Rotary chair

Abstract

The utility model discloses a swivel chair which comprises an upper rotating assembly and a lower supporting assembly matched with the upper rotating assembly, the upper rotating assembly comprises a seat-back connecting piece and at least three seat tubes connected with the seat-back connecting piece, the lower supporting assembly comprises a foot tube connecting piece and at least three foot tubes connected with the foot tube connecting piece, and the seat-back connecting piece and the foot tube connecting piece are coaxially connected. An upper rotating piece and a lower rotating piece are arranged between the seat back connecting piece and the foot tube connecting piece, the upper rotating piece is connected with the seat back connecting piece, and the lower rotating piece is connected with the foot tube connecting piece. The rotating chair disclosed by the utility model realizes relative rotation through the upper rotating piece and the lower rotating piece of the upper rotating component and the lower supporting component, and has the advantages of simple structure, stability in rotation and the like.

Description

Technical Field

[0001] This utility model discloses a swivel chair, which relates to the field of home or leisure products technology. Background Technology

[0002] Currently, swivel chairs on the market are divided into office swivel chairs and outdoor leisure swivel chairs. Most outdoor swivel chairs have detachable seat surfaces; if the fabric is lost and there is no spare seat surface, the user experience will be poor. In addition, some non-detachable swivel chairs are relatively large, inconvenient to carry, and have high production costs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a swivel chair that rotates smoothly and folds up to be small and easy to carry.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A swivel chair includes an upper rotating assembly and a cooperating lower support assembly. The upper rotating assembly includes a seat-back connector and at least three seat tubes connected thereto. The lower support assembly includes a leg tube connector and at least three leg tubes connected thereto. The seat-back connector and the leg tube connector are coaxially connected. An upper and lower rotating component is provided between the seat-back connector and the leg tube connector. The upper rotating component is connected to the seat-back connector, and the lower rotating component is connected to the leg tube connector. The upper rotating component and the lower rotating component achieve relative rotation through surface contact or through rolling elements.

[0006] Furthermore, the foot tube connector and the seat back connector have protruding periphery at their mating ends, and the center of the mating end is concave. The periphery of the seat back connector and the seat back connector mate to form a receiving cavity, and the upper rotating part and the lower rotating part are located in the receiving cavity.

[0007] Furthermore, the upper rotating component and the seat / back connector are die-cast together, and the lower rotating component and the foot tube connector are die-cast together. The center of the seat / back connector and the foot tube connector are respectively through holes, and coaxial connectors are provided in the through holes. One end of the circumferential shaft connector and the mating part with the seat / back connector are provided with a flat bearing to improve rotational stability.

[0008] Furthermore, both the upper and lower rotating components include a rotating disk and a centrally extending rotating sleeve. The rotating sleeve and rotating disk have a central through-hole. The rotating sleeve is inserted into and fixed within the through-hole of the seat / backrest connector or foot tube connector. A coaxial connector passes through the rotating sleeve and the central through-hole of the rotating disk. The coaxial connector consists of a mating bolt and a mating nut. One end of the mating nut has an internal thread, and the mating bolt has an external thread that screws into the inner hole of the mating nut.

[0009] Furthermore, the central through hole of the seat-back connector forms a post and extends outward. An outer ring post tube is provided around the post. The top of the outer ring post tube is higher than the top of the central post. The flat bearing is located at the top of the central post and inside the outer ring post tube. A cap is provided at the top of the outer ring post tube.

[0010] Furthermore, both the upper and lower rotating parts are annular bodies, and the mating surfaces of the two annular bodies are fitted with annular limiting grooves. Several ball bearings are disposed within the limiting grooves, with the ball bearings located away from the center and close to the protruding periphery of the foot tube connector. The coaxial connector consists of a bolt and a corresponding nut. The bottom of the foot tube connector has a countersunk hole, and the nut is located within this countersunk hole when tightened. The bottom of the foot tube connector has a base plate to seal the countersunk hole.

[0011] Furthermore, the seat back connector has a mounting position for connecting to the seat post, one end of the seat post is hinged to the seat back connector, and a stop is provided at the mounting position of the seat back connector to limit the angle of the seat post opening.

[0012] Furthermore, the leg tube connector has a mounting position for hinged connection with the leg tube, and the leg tube has a spring-loaded pin structure. The side wall of the leg tube connector has a positioning groove. When the leg tube is extended, the head of the spring-loaded pin structure slides into the positioning groove. The spring-loaded pin structure includes a fixing pin and a cooperating spring. The spring and fixing pin are located inside the leg tube. The side wall of the leg tube has an opening, and the pin head of the fixing pin passes through the side wall hole to form a limiting point. Under the action of the spring, the fixing pin extends or retracts and cooperates with the positioning groove of the leg tube connector to form a limiting structure.

[0013] Furthermore, a groove is provided between the mounting positions of the adjacent leg hinges to accommodate the folded seat tube.

[0014] Furthermore, the leg tubes consist of four arc-shaped tubes, with the lower ends of each tube engaging with a tube plug, and the outer sides of the lower ends of the leg tubes riveted to the foot pads. The seat tubes are also four in number, all being extendable tubes. Two are the front seat tubes, and two are the rear seat tubes. When extended, the rear seat tubes are longer than the front seat tubes. One end of each seat tube is hinged to the mounting position of the seat-back connector, and the other end of each seat tube connects to the corresponding end of the seat surface. When folded, the seat surface flips over to wrap around the chair frame. The front seat tube includes a lower support tube and a relatively sliding upper support tube. When the upper support tube slides and extends to its maximum position within the lower support tube, it is fixed by a positioning pin or riveting. The lower support tube has an inner sleeve at its opening, and the side wall of the upper support tube opening has a protective plate. The upper and lower support tubes slide more smoothly relative to each other. The upper end of the upper support tube connects and supports the seat surface. The seat tubes include a lower back tube, a middle back tube, and an upper back tube. The upper back tube slides and extends within the middle back tube, and the middle back tube slides and extends within the lower back tube. When adjacent back tubes are extended to their maximum position, they are riveted together by positioning pins. The upper opening of the lower back tube and the upper opening of the middle back tube are provided with inner sleeves. The bottom side of the upper back tube and the bottom side of the middle back tube are provided with protective plates. The bottom end of the lower back tube is hinged to the seat back connector, and the upper part of the upper back tube is connected and supported to the seat surface.

[0015] This utility model discloses a swivel chair that achieves relative rotation through upper and lower rotating parts of an upper rotating component and a lower supporting component. Its structure is simple and its rotation is stable. The seat of this swivel chair is fixed, and it can be folded and flipped to cover the chair frame. It has a small folded volume, is easy to carry, has high space utilization, and low production cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the unfolded state of an embodiment of this utility model.

[0017] Figure 2 is another schematic diagram of the unfolded state of an embodiment of this utility model.

[0018] Figure 3 is a schematic diagram of the folded state of an embodiment of this utility model.

[0019] Figure 4 is a cross-sectional view of an embodiment of this utility model.

[0020] Figure 5 is a magnified view of part M in Figure 4.

[0021] Figure 6 is a cross-sectional view of another embodiment of the present invention.

[0022] Figure 7 is a schematic diagram of the seat back connector of this utility model.

[0023] Figure 8 is a schematic diagram of the foot tube connector of this utility model.

[0024] Figure 9 is a schematic diagram of the protective sheet of this utility model.

[0025] Figure 10 This is a schematic diagram of the inner sheath of the pipe in this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Example: Please refer to Figures 1 to 10This utility model discloses a swivel chair, including an upper rotating assembly and a corresponding lower support assembly. The upper rotating assembly includes a seat-back connector 1 and at least three seat tubes 16 connected thereto. The lower support assembly includes a leg tube connector 2 and at least three leg tubes 3 connected thereto. The seat-back connector 1 and the leg tube connector 2 are coaxially connected. An upper rotating component 4 and a lower rotating component 5 are provided between the seat-back connector 1 and the leg tube connector 2. The upper rotating component 4 is connected to the seat-back connector 1. For example, the upper rotating component and the seat-back connector can be die-cast as one piece, or they can be connected and fixed by other connection methods. The lower rotating component and the leg tube connector can be die-cast as one piece or connected and fixed by other connection methods. The lower rotating component 5 is connected to the leg tube connector 2. The upper rotating component 4 and the lower rotating component 5 can achieve relative rotation through surface contact or through rolling elements 6. The foot tube connector 2 of the swivel chair has a protruding periphery 21 at the mating end with the seat back connector 1. The mating end is recessed in the middle 22. For example, the seat back connector 1 has an annular groove on its periphery that corresponds to the periphery of the foot tube connector 2. The periphery of the foot tube connector 2 and the seat back connector 1 cooperate to form a receiving cavity. The upper rotating part 4 and the lower rotating part 5 are located in the receiving cavity.

[0028] Please refer to Figures 1 to 5. In one embodiment of this utility model, the center of the seat / backrest connector 1 and the footrest connector 2 are respectively through holes, and a coaxial connector is provided in the through holes. A flat bearing 7 is provided at one end of the circumferential shaft connector and at the mating point with the seat / backrest connector 1 to improve rotational stability. As shown in Figure 5, the rotational structure of this utility model is as follows: the upper rotating component 4 and the lower rotating component 5 adopt a surface contact mode. Both rotating components include a rotating disk and a rotating sleeve extending from the center. The rotating sleeve and the rotating disk have a center through hole. The rotating sleeve is inserted into the through hole of the seat / backrest connector 1 or the footrest connector 2 and fixed. The coaxial connector passes through the rotating sleeve and the center through hole of the rotating disk. A limiting part is provided on the periphery of the rotating sleeve to cooperate and fix with the corresponding seat / backrest connector or footrest connector. The limiting part can be toothed or other protruding designs. As shown in Figure 5, the central through hole of the seat-back connector 1 forms a post 101 that extends outward. An outer ring tube 102 is provided around the post 101, with its top end higher than the top end of the central post 101. A flat bearing 7 is located at the top end of the central post 101 and inside the outer ring tube 102. A cap 8 is provided at the top end of the outer ring tube 102. In this embodiment, the coaxial connectors used are a mating bolt 9 and a mating nut 10. One end of the mating nut 10 has an internal thread, and the mating bolt 9 has an external thread that screws into the inner hole of the mating nut 10. The mating bolt 9 is located in a recessed hole at the bottom of the foot tube connector 2, and a bottom cap 11 is provided at the opening of the hole.

[0029] As shown in Figure 6, in one embodiment of this utility model, the rotating mechanism has the following structure: the mating end of the foot tube connector 2 and the seat / backrest connector 1 protrudes around its periphery, and the center of this mating end is recessed to accommodate the protruding end of the seat / backrest connector 1. Both the upper rotating component 4 and the lower rotating component 5 are annular bodies, and their mating surfaces are fitted with annular limiting grooves. Several ball bearings 6 are disposed within these limiting grooves, with the ball bearings 6 positioned away from the center and close to the protruding periphery of the foot tube connector 2. The coaxial connector consists of a bolt 13 and a corresponding nut 14. The bottom of the foot tube connector 2 has a countersunk hole, and the nut is located within this countersunk hole when tightened. A bottom cap 11 is provided at the bottom of the foot tube connector 2 to seal the countersunk hole.

[0030] Please refer to Figures 1, 2 and 7. In one embodiment of this utility model, the seat back connector 1 is provided with an installation position 103 for connecting with the seat tube. One end of the seat tube is hinged to the seat back connector 1. A stop is provided at the installation position of the seat back connector to limit the angle of the seat tube unfolding.

[0031] Please refer to Figures 1 to 12. Figure 6 As shown in Figure 8, in one embodiment of this utility model, the leg tube connector 2 has a mounting position 201 that is hinged to the leg tube 3. The leg tube 3 has a spring-loaded pin structure, and the side wall of the leg tube connector 2 has a positioning groove 202. When the leg tube is unfolded, the head of the spring-loaded pin structure slides into the positioning groove. The spring-loaded pin structure includes a fixing pin and a cooperating spring 15. The spring 15 and the fixing pin are disposed inside the leg tube 3. The side wall of the leg tube 3 has an opening, and the pin head of the fixing pin passes through the side wall hole to form a limiting point. The fixing pin extends or retracts under the action of the spring 15 and cooperates with the positioning groove 202 of the leg tube connector 2 to form a limiting structure. A groove 203 is provided between the mounting positions where adjacent leg tubes are hinged to accommodate the folded seat tube.

[0032] Please refer to Figures 1 to 3. In one embodiment of this utility model, the foot tubes 3 are four arc-shaped structural tubes. The lower ends of the four foot tubes are engaged with the tube plugs 31, and the outer sides of the lower ends of the foot tubes are riveted to the foot pads 32. There are four seat tubes 16, all of which are telescopic tubes. Two of them are front seat tubes 161, and two are rear seat tubes 162. When the seat tubes are extended, the length of the rear seat tubes is greater than the length of the front seat tubes. One end of each seat tube is hinged to the mounting position of the seat-back connector, and the other end of each seat tube is connected to the corresponding end of the seat surface. When folded, the seat surface flips over to wrap around the chair frame. The front seat tube 161 includes a lower branch tube 1611 and an upper branch tube 1612 that slides relative to each other. When the upper branch tube 1612 slides and extends to its maximum position within the lower branch tube 1611, it is fixed by a positioning pin or a spring pin. The lower branch tube 1611 has an inner sleeve 17 at its opening, and the side wall of the opening of the upper branch tube 1612 has a protective plate 18. The upper and lower branch tubes slide more smoothly relative to each other. The upper end of the upper branch tube 1612 is connected and supported to the seat surface. The inner sleeve 17 has a buckle 171 on each side. The side wall of the opening of the lower branch tube 1611 has a locking hole. After assembly, the buckle 171 is positioned at the locking hole as shown in Figure 2. The inner sleeve 17 is installed at the opening of the lower branch tube 1611 through the buckle and the locking hole. The side wall of the upper branch tube 1612 near the port has an installation hole. The protective plate 18 is U-shaped and symmetrically arranged. The inner side of the protective plate 18 has a protrusion 181 that cooperates with the installation hole. The seat post 162 includes a lower backrest post 1621, a middle backrest post 1622, and an upper backrest post 1623. The upper backrest post 1623 slides and extends within the middle backrest post 1622, and the middle backrest post 1622 slides and extends within the lower backrest post 1621. When adjacent backrest posts are extended to their maximum position, they are fixed by positioning pins or spring pins. The upper opening of the lower backrest post 1621 and the upper opening of the middle backrest post 1622 are provided with inner sleeves. The bottom side of the upper backrest post 1623 and the bottom side of the middle backrest post 1622 are provided with protective plates. The bottom end of the lower backrest post 1621 is hinged to the seat back connector 2, and the upper part of the upper backrest post 1623 is connected and supported to the seat surface.

[0033] In one embodiment of this utility model, a swivel chair includes four foot pads 32, four foot tubes 3, four seat tubes 16, two of which are front seat tubes and two are rear seat tubes, six square tube inner sleeves or tube inner sleeves 17, six pairs of protective plates 18, twelve square tube plugs, one seat-back connector 1, one foot tube connector 2, one cap, and two swivel components. In this utility model, the inner sides of the lower ends of the four leg tubes are fitted with tube plugs, and the outer sides of the lower ends of the leg tubes are riveted to the foot pads; the upper ends of the leg tubes 3 are riveted to the leg tube connectors 2; four fixing pins and four compression springs are fitted to form a spring pin structure, and the assembly is fitted with the positioning grooves 202 of the leg tubes and the leg tube connectors 2; the leg tube connectors 3 are fitted with the lower rotating member 2; the lower rotating member 2 is fitted with the upper rotating member through a docking nut and a docking bolt; the flat bearing 7 is fitted with the docking nut; the seat back connector 1 is fitted with the upper rotating member 4; the cap 8 is fitted with the seat back connector 1; the four seat tubes are respectively riveted to the seat back connector 1 to form a hinged rotation; the end of the seat tube near the seat back connector is fitted with the tube plug, and the tube plug is riveted to the seat back connector.

[0034] As shown in Figure 3, when the swivel chair frame of this utility model is folded up, each seat tube of the swivel chair is fixed to the seat or chair fabric, and can be folded up and flipped to wrap the chair frame, resulting in high space utilization.

[0035] The above description is merely an embodiment of the invention's technical content. Any modifications or variations made by those skilled in the art using this invention are within the scope of the invention's claims, and are not limited to those disclosed in the embodiments.

Claims

1. A swivel chair, characterized in that: The device includes an upper rotating assembly and a corresponding lower support assembly. The upper rotating assembly includes a seat-back connector and at least three connected seat tubes. The lower support assembly includes a foot tube connector and at least three connected foot tubes. The seat-back connector and the foot tube connector are coaxially connected. An upper and lower rotating component is provided between the seat-back connector and the foot tube connector. The upper rotating component is connected to the seat-back connector, and the lower rotating component is connected to the foot tube connector. The upper rotating component and the lower rotating component achieve relative rotation through surface contact or through rolling elements.

2. A swivel chair according to claim 1, characterized in that: The foot tube connector and the seat back connector have protruding periphery at their mating ends, and the center of the mating end is concave. The periphery of the seat back connector and the seat back connector mate to form a receiving cavity, and the upper rotating part and the lower rotating part are located in the receiving cavity.

3. A swivel chair according to claim 1, characterized in that: The upper rotating part and the seat and back connector are die-cast and connected as one piece, and the lower rotating part and the foot tube connector are die-cast and connected as one piece. The center of the seat and back connector and the foot tube connector are respectively through holes, and coaxial connectors are provided in the through holes. A flat bearing is provided at one end of the circumferential shaft connector and at the mating point with the seat and back connector.

4. A swivel chair according to claim 1, characterized in that: Both the upper and lower rotating parts include a rotating disk and a rotating sleeve extending from the center. The rotating sleeve and the rotating disk have a central through hole. The rotating sleeve is inserted into the through hole of the seat back connector or the foot tube connector and fixed. The coaxial connector passes through the rotating sleeve and the central through hole of the rotating disk.

5. A swivel chair according to claim 1, characterized in that: Both the upper and lower rotating parts are annular bodies, and the mating surfaces of the two annular bodies are fitted with annular limiting grooves. Several balls are arranged in the limiting grooves, and the balls are far from the center and close to the periphery of the protruding foot tube connector.

6. A swivel chair according to any one of claims 1 to 5, characterized in that: The seat back connector has a mounting position for connecting to the seat post. One end of the seat post is hinged to the seat back connector. A stop is provided at the mounting position of the seat back connector to limit the angle of the seat post opening. The leg tube connector has a mounting position that is hinged to the leg tube. The leg tube has a spring pin structure. The side wall of the leg tube connector has a positioning groove. When the leg tube is unfolded, the head of the spring pin structure slides into the positioning groove.

7. A swivel chair according to any one of claims 1 to 5, characterized in that: There are four seat tubes, all of which are telescopic. Two are front seat tubes and two are rear seat tubes. When the seat tubes are extended, the length of the rear seat tubes is greater than that of the front seat tubes. One end of each seat tube is hinged to the mounting position of the seat-back connector, and the other end of each seat tube is connected to the corresponding end of the seat. When folded, the seat flips over to wrap around the chair frame.

8. A swivel chair according to claim 7, characterized in that: The front seat tube includes a lower branch tube and an upper branch tube that slides relative to each other. When the upper branch tube slides and extends within the lower branch tube, it is fixed by a spring pin. The lower branch tube has an inner sleeve at its opening, and the upper branch tube has a protective plate on its side wall. The upper and lower branch tubes slide more smoothly relative to each other. The upper end of the upper branch tube is connected to and supported by the seat surface. The seat tube includes a lower back tube, a middle back tube, and an upper back tube. The upper back tube slides and extends within the middle back tube, and the middle back tube slides and extends within the lower back tube. When adjacent back tubes extend, they are fixed by spring pins. The upper opening of the lower back tube and the upper opening of the middle back tube are provided with inner sleeves. The bottom side of the upper back tube and the bottom side of the middle back tube are provided with protective plates. The bottom end of the lower back tube is hinged to the seat back connector, and the upper part of the upper back tube is connected and supported to the seat surface.

9. A swivel chair according to claim 3, characterized in that: The central through hole of the seat and backrest connector forms a post and extends outward. An outer ring post tube is provided around the post. The top of the outer ring post tube is higher than the top of the central post. The flat bearing is set at the top of the central post and is located inside the outer ring post tube. The top of the outer ring post tube is provided with a cap.

10. A swivel chair according to claim 1, 2, 3, 4, 5, 8, or 9, characterized in that: The foot tube consists of four arc-shaped tubes. The lower ends of the four foot tubes are fitted with tube plugs, and the outer side of the lower end of the foot tube is riveted to the foot pad. The upper end of the foot tube is hinged to the mounting position of the foot tube connector. A groove is provided between the mounting positions of adjacent foot tubes to accommodate the folded seat tube.

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