Chair leg and automatic reset swivel chair rotating shaft with leisure bracket

Abstract

The utility model relates to a chair leg and an automatic reset swivel chair rotating shaft with a leisure bracket. The automatic reset swivel chair rotating shaft comprises a reset rotating shaft and the leisure bracket arranged above the reset rotating shaft, wherein the leisure bracket comprises an inner box arranged at the top of the reset rotating shaft and an outer box movably hinged to the inner box, a spring reset assembly connected with the outer box is arranged on the inner box, and a limiting inclined face is arranged on the side, close to the spring reset assembly, of the inner box; the reset rotating shaft comprises a rotating shaft and a rotating shaft reset assembly arranged outside the rotating shaft in a sleeving mode. According to the chair leg disclosed by the utility model, the leisure bracket is hinged on the inner box by utilizing the outer box, so that when a user leans backwards, the outer box can rotate relative to the inner box, and the function of leaning backwards is realized; when a user does not need to lean backwards, the seat can be rebounded as long as the body leans forwards to be relaxed, operation is easy and convenient, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of swivel chair accessories, in particular to a chair foot and an automatically reset swivel chair rotating shaft with a swing bracket. Background Art

[0002] A swivel chair is a chair that can be easily turned and raised and lowered, and is one of the most commonly used office chairs. Most office swivel chairs are reclining chairs, and in order to provide greater comfort and reduce the user's fatigue from sitting for long periods of time at work, a leisure function, that is, a reclining function, is added to the swivel chair. Currently, in order to achieve the leisure function, ordinary swivel chairs are generally provided with an adjustment handle on the chair leg (i.e., the bottom of the swivel chair seat). The reclining angle of the chair is adjusted by pulling the adjustment handle. After the chair reclines, the handle is reset and locked. If you want to adjust it back, you need to move the adjustment handle, apply appropriate pressure to the backrest of the chair in the reclining position, and then relax, and the chair back will bounce back. The above design has a very complex bracket structure on the chair leg shaft and a high cost. In addition, consumers need to bend over to pull the adjustment handle when using the leisure function, which invisibly reduces the consumer's user experience.

[0003] Therefore, how to design a chair leg with a simple structure, low cost, and the ability to achieve a relaxing function without turning an adjustment handle has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and provide a chair leg with a simple structure, low cost, and the ability to realize a rocking function without turning an adjustment handle; in addition, an automatic reset swivel chair rotating shaft with a rocking bracket is provided to realize the above-mentioned rocking function.

[0005] The technical solution adopted by the utility model is: the automatic reset swivel chair rotating shaft with a swing bracket includes a reset rotating shaft and a swing bracket arranged above the reset rotating shaft; wherein,

[0006] The Xiaoyao bracket includes an inner box arranged on the top of the reset shaft and an outer box movably hinged on the inner box, the inner box is provided with a spring reset assembly connected to the outer box, and the inner box is provided with a limited inclined surface on one side close to the spring reset assembly;

[0007] The reset shaft comprises a shaft and a shaft reset component sleeved outside the shaft.

[0008] Preferably, the spring return assembly includes a plurality of spring mounting sleeves arranged on the inner box and reclining springs arranged in the spring mounting sleeves, and both ends of the reclining springs are fixedly connected to the inner box and the outer box respectively.

[0009] Preferably, the number of the spring mounting sleeves and reclining springs is three.

[0010] Preferably, the outer box is hinged to the inner box via a reclining rotation axis, and the reclining rotation axis is located on a side of the midline close to the limiting inclined surface.

[0011] Preferably, the inner box has an upper opening, the outer box has a lower opening, and the outer box is movably sleeved on the inner box.

[0012] Preferably, the inner box is formed into a box structure with an upper opening by a front plate, a rear plate, two side plates and a bottom plate, the top of the front plate extends upward to the outer box, and there is a gap between the rear plate and the two side plates and the outer box.

[0013] Preferably, the top of the rear plate is an inclined surface 1, and the inclined surface 1 is inclined outward from top to bottom.

[0014] Preferably, the two side panels are provided with an inclined surface 2 at the top of one side close to the rear panel, and the inclined surface 1 and the inclined surface 2 constitute the limiting inclined surface.

[0015] Preferably, the base plate is connected to the top of the reset shaft through a shaft mounting sleeve.

[0016] Preferably, the rotating shaft reset assembly includes a limit sleeve mounted on the outside of the rotating shaft, and a limit ring, a rotating shaft spring, a roller guide ring and a roller are arranged between the limit sleeve and the rotating shaft from top to bottom; the lower end face of the roller guide ring is a guide rail inclined surface, and the roller is arranged on the rotating shaft and rolls along the guide rail inclined surface; the lower end of the rotating shaft spring and the roller guide ring move axially along the limit sleeve.

[0017] Preferably, the inner wall of the limiting sleeve is provided with a limiting groove, and the circumferential side surfaces of the limiting ring and the roller guide ring are provided with limiting clips adapted to the limiting groove.

[0018] A chair leg comprises the above-mentioned swivel chair rotating shaft and a support leg assembly arranged at the bottom of the swivel chair rotating shaft.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The legs of this utility model feature a swing arm mounted on the rotating axis of the automatic-reset swivel chair. This swing arm is hinged to the inner arm via an outer box, allowing the outer box to rotate relative to the inner box when the user reclines, thus enabling the reclining function. Furthermore, a spring return assembly is provided between the inner and outer boxes. When the user no longer needs to recline, they simply lean forward and relax, and the seat will spring back. This design offers ease of operation, a simple structure, and low production costs.

[0021] 2. The chair legs of the present invention are also provided with a reset shaft, which drives the roller to roll along the guide rail inclined surface of the roller guide ring through the rotation of the shaft, thereby compressing or releasing the shaft spring to realize the automatic reset function of the swivel chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the rotating shaft of the swivel chair of the utility model.

[0023] Figure 2 yes Figure 1 Exploded diagram of the structure.

[0024] Figure 3 This is a schematic diagram of the internal structure of the inner box.

[0025] Figure 4 It is a longitudinal sectional view of the rotating shaft of the swivel chair of the utility model in a normal state.

[0026] Figure 5 This is a schematic diagram of the positions of the outer box and the inner box when the swivel chair is reclined.

[0027] Figure 6 It is a schematic diagram of the internal structure of the reset shaft.

[0028] Figure 7 It is a structural schematic diagram of the utility model chair leg.

[0029] The numbers in the figure indicate:

[0030] 1-reset shaft, 11-shaft, 12-shaft reset assembly, 121-limit sleeve, 1211-limit groove, 122-limit ring, 123-shaft spring, 124-roller guide ring, 1241-guide rail inclined surface, 125-roller, 126-limit card strip, 2-free bracket, 21-inner box, 211-front plate, 212-rear plate, 213-side plate, 214-bottom plate, 22-outer box, 23-spring reset assembly, 231-spring mounting sleeve, 232-recoil spring, 24-recoil rotation axis, 25-limit inclined surface, 251-inclined surface one, 252-inclined surface two, 26-shaft mounting sleeve, 3-support foot assembly. DETAILED DESCRIPTION

[0031] To deepen the understanding of the present invention, the present invention will be further described below in conjunction with implementation examples and accompanying drawings. The present invention can be implemented in the following ways:

[0032] Reference Figure 1-6 The automatic reset swivel chair rotating shaft with a leisure bracket includes a reset rotating shaft 1 and a leisure bracket 2 arranged above the reset rotating shaft 1.

[0033] The leisurely carriage 2 comprises an inner box 21 mounted on top of the reset shaft 1 and an outer box 22 movably hinged to the inner box 21. The inner box 21 has an upper opening, and the outer box 22 has a lower opening. The outer box 22 movably fits over the inner box 21. The leisurely carriage 2 is hinged to the inner box 21 using the outer box 22, allowing the outer box 22 to rotate relative to the inner box 21 when the user leans back, thereby enabling the reclining function. The inner box 21 is provided with a spring return assembly 23 connected to the outer box 22. When the user no longer needs to lean back, they simply lean forward and relax, and the seat will rebound.

[0034] Specifically, to limit the rotation angle of the outer box 22 relative to the inner box 21, the outer box 22 is hinged to the inner box 21 via a reclining rotation axis 24, which is located on the side of the midline near the limiting inclined surface. The inner box 21 is surrounded by a front plate 211, a rear plate 212, two side plates 213, and a bottom plate 214 to form a box structure with an upper opening. The top of the front plate 211 extends upward onto the outer box 22, and there is a gap between the rear plate 212 and the two side plates 213 and the outer box 22. The top of the front plate 211 is used to support the inner side of the top plate of the outer box 22, so that the outer box 22 cannot rotate toward the front plate 211 relative to the inner box 21, thereby preventing the swivel chair from tilting forward and improving its safety performance.

[0035] To prevent the inner box 21 from tilting backward too much, a limiting inclined surface 25 is provided on the side near the spring return assembly 23. Specifically, the top of the rear panel 212 is an inclined surface 1 251, which is inclined outward from top to bottom. The two side panels 213 are provided with inclined surfaces 252 on the top of the side near the rear panel 212, with the same inclination as the inclined surface 1 251. The inclined surfaces 1 251 and 252 constitute the limiting inclined surfaces 25. When the outer box 22 rotates toward the rear panel 212 of the inner box 21, when the inner side surface of the top panel of the outer box 22 rotates to the limiting inclined surface 25, the limiting inclined surface 25 presses against the outer box 22, preventing it from rotating further, thereby limiting the angle at which the swivel chair can tilt backward and preventing it from tipping over.

[0036] Furthermore, to allow the inner box 21 to connect to the top of the reset shaft 1, the bottom plate 214 is connected to the top of the reset shaft 1 via a shaft mounting sleeve 26. The reset shaft 1 can move axially along the shaft mounting sleeve 26 to achieve the raising and lowering of the swivel chair. The swivel chair seat is mounted on the top plate of the outer box 22.

[0037] To ensure the swivel chair automatically rebounds after reclining, the spring return assembly 23 comprises several spring mounting sleeves 231 mounted on the inner box 21 and reclining springs 232 mounted within the spring mounting sleeves 231. The reclining springs 232 are fixedly connected to the inner box 21 and outer box 22 at their ends. In this embodiment, there are three spring mounting sleeves 231 and three reclining springs 232, ensuring a more even force distribution on the outer box 22. When the swivel chair reclines, that is, as the outer box 22 rotates toward the rear panel 212 of the inner box 21, the outer box 22 stretches the reclining springs 232. When the user no longer needs to recline, they simply lean forward and relax, causing the outer box 22 to rotate under the tension of the springs, causing the chair to rebound. This design offers ease of operation, a simple structure, and low production costs.

[0038] To reset the swivel chair after rotation, the reset shaft 1 includes a shaft 11 and a shaft reset assembly 12 that sleeves over the shaft 11. The shaft reset assembly 12 includes a limiting sleeve 121 that sleeves over the shaft 11. Between the limiting sleeve 121 and the shaft 11, a limiting ring 122, a shaft spring 123, a roller guide ring 124, and a roller 125 are positioned, from top to bottom. The lower end surface of the roller guide ring 124 defines an inclined guide surface 1241. The roller 125 is mounted on the shaft 11 and rolls along the inclined guide surface 1241. The lower end of the shaft spring 123 and the roller guide ring 124 move axially along the limiting sleeve 121. The top end of the inclined guide surface 1241 is the reset position. When the swivel chair rotates, the roller 125 on the rotating shaft 11 rolls along the inclined guide surface 1241. Simultaneously, the roller guide ring 124 moves up and down along the axial direction of the rotating shaft 11, compressing or releasing the rotating shaft spring 123. Specifically, when the user rotates the swivel chair, the rotating shaft spring 123 is compressed. Once the user leaves the swivel chair, the rotating shaft spring 123 is completely released. At this point, the roller guide ring 124, under the action of the rotating shaft spring 123, moves downward and pushes the roller 125 to the reset position on the inclined guide surface 1241. As the roller 125 rolls, it also drives the rotating shaft 11 to the reset position, thus achieving the automatic reset function of the swivel chair.

[0039] To ensure that the roller guide ring 124 can only move axially along the rotating shaft 11 and not rotate, the inner wall of the limiting sleeve 121 is provided with a limiting groove 1211. The circumferential side surfaces of the limiting ring 122 and the roller guide ring 124 are provided with limiting clips 126 that adapt to the limiting grooves 1211. The design of the limiting grooves 1211 and limiting clips 126 ensures that the position of the swivel chair remains unchanged each time it is reset.

[0040] Reference Figure 7A chair leg includes the aforementioned swivel chair rotation axis 11 and a leg assembly 3 disposed at the bottom of the swivel chair rotation axis 11. The leg assembly 3 includes a plurality of legs evenly distributed at the bottom of the swivel chair rotation axis 11. This chair leg design is easy to operate, has a simple structure, and has low production costs, making it suitable for wide application and promotion.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The automatic reset swivel chair with a swing bracket is characterized by: It comprises a reset shaft (1) and a swing bracket (2) arranged above the reset shaft (1); wherein, The leisure bracket (2) comprises an inner box (21) arranged on the top of the reset shaft (1) and an outer box (22) movably hinged to the inner box (21); the inner box (21) is provided with a spring reset assembly (23) connected to the outer box (22); and the inner box (21) is provided with a limited inclined surface (25) on a side close to the spring reset assembly (23); The reset rotating shaft (1) comprises a rotating shaft (11) and a rotating shaft reset component (12) sleeved outside the rotating shaft (11).

2. The automatic reset swivel chair rotation axis with a swing bracket according to claim 1, characterized in that: The spring return assembly (23) comprises a plurality of spring mounting sleeves (231) arranged on the inner box (21) and a reclining spring (232) arranged in the spring mounting sleeves (231), and the two ends of the reclining spring (232) are fixedly connected to the inner box (21) and the outer box (22) respectively.

3. The automatic reset swivel chair rotation axis with a swing bracket according to claim 2, characterized in that: The number of the spring mounting sleeves (231) and reclining springs (232) is three.

4. The automatic reset swivel chair rotation axis with a swing bracket according to claim 1, 2 or 3, characterized in that: The outer box (22) is hinged to the inner box (21) via a reclining rotation axis (24), and the reclining rotation axis (24) is located on the side of the midline close to the limiting inclined surface (25).

5. The automatic reset swivel chair rotation axis with a swing bracket according to claim 4, characterized in that: The inner box (21) is formed into a box structure with an upper opening by a front plate (211), a rear plate (212), two side plates (213) and a bottom plate (214); the top of the front plate (211) extends upward to the outer box (22); and there is a gap between the rear plate (212) and the two side plates (213) and the outer box (22).

6. The automatic reset swivel chair rotation axis with a swing bracket according to claim 5, characterized in that: The top of the rear plate (212) is an inclined surface 1 (251), and the inclined surface 1 (251) is inclined outward from top to bottom; the two side plates (213) are provided with an inclined surface 2 (252) with the same inclination as the inclined surface 1 (251) at the top of one side close to the rear plate (212), and the inclined surface 1 (251) and the inclined surface 2 (252) constitute the limiting inclined surface (25).

7. The automatic reset swivel chair rotation axis with a swing bracket according to claim 5, characterized in that: The bottom plate (214) is connected to the top of the reset shaft (1) via a shaft mounting sleeve (26).

8. The automatic reset swivel chair rotating shaft with a swing bracket according to claim 1, 2, 3, 5, 6 or 7, characterized in that: The rotating shaft reset assembly (12) comprises a limiting sleeve (121) sleeved on the outside of the rotating shaft, wherein a limiting ring (122), a rotating shaft spring (123), a roller guide ring (124) and a roller (125) are sequentially arranged between the limiting sleeve (121) and the rotating shaft (11) from top to bottom; the lower end surface of the roller guide ring (124) is a guide rail inclined surface (1241), and the roller (125) is arranged on the rotating shaft (11) and rolls along the guide rail inclined surface (1241); the rotating shaft spring (123) and the roller guide ring (124) move axially along the limiting sleeve (121).

9. The automatic reset swivel chair rotation axis with a swing bracket according to claim 8, characterized in that: The inner wall of the limiting sleeve (121) is provided with a limiting groove (1211), and the circumferential side surfaces of the limiting ring (122) and the roller guide ring (124) are provided with limiting clips (126) adapted to the limiting groove (1211).

10. A chair leg, characterized in that: The invention comprises a swivel chair rotation shaft as claimed in any one of claims 1 to 9 and a foot assembly (3) arranged at the bottom of the swivel chair rotation shaft.

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