A chair back rocking mechanism

Abstract

The utility model relates to chair technical field especially a chair back swing mechanism, including two support legs, two support legs are connected with seat frame support subassembly through the even fixed mechanism, two seat frame support subassembly all are provided with connecting rod, two connecting rod all are equipped with spring, two seat frame support subassembly all are connected with swing angle code through rotating mechanism, two spring one end and seat frame support subassembly abut, the other end and swing angle code abut, two connecting rod upper end all are provided with blocking mechanism. The utility model under the action of spring resilience, drive swing angle code reset, reset the angle of backpack, reset seat bag simultaneously, need not subsequent user to carry out manual reset.

Description

Technical Field

[0001] This utility model relates to the field of chair technology, and in particular to a chair back rocking mechanism. Background Technology

[0002] Different people have different requirements for the angle of the chair back due to their height, weight and personal habits. In order to meet the needs of different people, the backrest usually needs to be adjusted. When adjusting, the backrest is rotated to adjust the angle for the user. However, after the adjustment is completed, the backrest needs to be manually reset. The backrest angle cannot be automatically reset, which will force subsequent users to make additional adjustments, thus affecting the use of subsequent users. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the existing technology cannot automatically reset the angle of the backrest, which forces subsequent users to make additional adjustments and thus affects the use of the chair. Therefore, this invention proposes a chair back rocking mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: Design a chair back rocking mechanism, including two support legs, with seat frame support components connected to the two support legs via a fixing mechanism. Each of the two seat frame support components has a connecting rod, and each of the two connecting rods is fitted with a spring. Each of the two seat frame support components is connected to a rocking bracket via a rotating mechanism. One end of each of the two springs abuts against the seat frame support component, and the other end abuts against the rocking bracket. Each of the two rocking brackets has a second through hole, and the two connecting rods pass through the two second through holes respectively. Each of the upper ends of the two connecting rods is provided with a blocking mechanism.

[0005] Preferably, the blocking mechanism includes a blocking nut, which is threaded to the upper end of the connecting rod, and a washer is provided at the lower end of the blocking nut, which is sleeved on the connecting rod.

[0006] Preferably, a rubber pad is fixedly connected to the swing bracket, and the rubber pad is sleeved on the connecting rod.

[0007] Preferably, both of the seat support assemblies are fitted with swing brackets.

[0008] Preferably, the fixing mechanism includes a first through hole, and the support leg has two first through holes. A bolt is installed in one of the first through holes. The bolt passes through the seat support assembly, and a first nut is threaded to the lower end of the bolt. The first nut abuts against the support leg. The connecting rod passes through the seat support assembly and extends into the other first through hole. A second nut is threaded to the lower end of the connecting rod.

[0009] Preferably, the rotating mechanism includes a mounting hole, which is formed on the rocker bracket. A pin is provided in the mounting hole, which passes through the base support assembly. A limit mechanism is provided at the end of the pin.

[0010] Preferably, the limiting mechanism includes a retaining ring, which is fixedly connected to one end of a pin, and a limiting hole is formed at the other end of the pin, in which a spring pin is provided.

[0011] Preferably, the first nut, the second nut, and the blocking nut are all stainless steel nuts.

[0012] The chair back rocking mechanism proposed in this utility model has the following advantages: when a person leaves, the pressure on the spring decreases, and under the action of the spring's restoring force, the rocking bracket is driven to reset, thus resetting the angle of the backpack and the seat. This eliminates the need for manual reset by the user. Furthermore, when a person leans against the backpack, the magnitude of the force exerted on the backpack can be changed, allowing the rocking bracket to swing back and forth, thereby helping to relieve the pressure of sitting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a chair back rocking mechanism proposed in this utility model; Figure 2 This is a perspective view of a chair back rocking mechanism according to the present invention during rocking. Figure 3 An exploded view of a chair back rocking mechanism proposed in this utility model; Figure 4 A perspective view of the rocking angle bracket of a chair back rocking mechanism proposed in this utility model; Figure 5 This is a perspective view of the pin portion of a chair back rocking mechanism according to the present invention. Figure 6 This utility model proposes a chair back rocking mechanism. Figure 2 Enlarged view of section A.

[0014] In the diagram: 1. Backpack; 2. Swing bracket; 3. Support leg; 4. First nut; 5. Seat frame support assembly; 6. Pin; 7. Connecting rod; 8. Spring; 9. Spring pin; 10. Blocking nut; 11. Washer; 12. Rubber pad; 13. Seat bag; 14. Bolt; 15. First through hole; 16. Second through hole; 17. Second nut; 18. Mounting hole; 19. Limiting hole; 20. Retaining ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1: Refer to Figure 1-6 A chair back rocking mechanism includes two support legs 3, with seat frame support assemblies 5 connected to the two support legs 3 via a fixing mechanism. Each seat frame support assembly 5 contains a connecting rod 7, and each connecting rod 7 is fitted with a spring 8. Each seat frame support assemblies 5 is connected to a rocking bracket 2 via a rotating mechanism. A backpack 1 is fixedly connected between the upper ends of the two rocking brackets 2, and a seat cushion 13 is fixedly connected to the lower ends of the two rocking brackets 2. One end of each spring 8 abuts against the seat frame support assemblies 5, and the other end abuts against the rocking bracket 2. Each rocking bracket 2 has a second through hole 16, through which the two connecting rods 7 pass respectively. Each connecting rod 7 has a [missing information - likely a design element or design element]. Equipped with a blocking mechanism, when a person leans back on the seat 13 and leans back against the backpack 1, the swing bracket 2 tilts backward, causing it to rotate around the pin 6. This compresses the spring 8, and as the backpack 1 tilts back, the seat 13 also rises synchronously, adjusting the angle of the backpack 1. When the person leaves, the pressure on the spring 8 decreases, and under the restoring force of the spring 8, the swing bracket 2 returns to its original position, resetting the angle of the backpack 1. At the same time, the seat 13 also returns to its original position. No manual reset is required from the user. Furthermore, when a person leans against the backpack 1, the magnitude of the force exerted on the backpack 1 can be changed, allowing the swing bracket 2 to swing back and forth, thus helping to relieve the pressure of sitting.

[0017] Example 2: Refer to Figure 6 As another preferred embodiment of this utility model, based on embodiment 1, the blocking mechanism includes a blocking nut 10, which is threadedly connected to the upper end of the connecting rod 7. A washer 11 is provided at the lower end of the blocking nut 10, and the washer 11 is sleeved on the connecting rod 7. After the blocking nut 10 is fixed, it exerts a force on the swing angle bracket 2, so that the spring 8 is initially in a compressed state. The blocking nut 10 prevents the swing angle bracket 2 from detaching from the connecting rod 7.

[0018] Example 3: Reference Figure 6 As another preferred embodiment of this utility model, based on embodiment 2, a rubber pad 12 is fixedly connected to the swing bracket 2. The rubber pad 12 is located directly above the second through hole 16. The rubber pad 12 is sleeved on the connecting rod 7. When the swing bracket 2 moves back and forth, the rubber pad 12 plays the role of buffering and noise reduction.

[0019] Example 4: Reference Figure 1-4As another preferred embodiment of this utility model, based on embodiment 3, the fixing mechanism includes a first through hole 15. Two first through holes 15 are opened on the support leg 3. A bolt 14 is provided in one of the first through holes 15. The bolt 14 passes through the seat support assembly 5. The lower end of the bolt 14 is threadedly connected to a first nut 4. The first nut 4 abuts against the support leg 3. The connecting rod 7 passes through the seat support assembly 5 and extends into the other first through hole 15. The lower end of the connecting rod 7 is threadedly connected to a second nut 17. By using the first nut 4 and the bolt 14, one end of the seat support assembly 5 is installed on the support leg 3. The second nut 17, the connecting rod 7 and the spring 8 fix the other end of the seat support assembly 5 to the support leg 3.

[0020] Example 5: Refer to Figure 1-5 As another preferred embodiment of this utility model, based on embodiment 4, the rotating mechanism includes a mounting hole 18, which is opened on the swing bracket 2. A pin 6 is provided in the mounting hole 18, which passes through the seat support assembly 5. A limit mechanism is provided at the end of the pin 6. The pin 6 connects the swing bracket 2 and the seat support assembly 5 and acts as a rotating shaft.

[0021] The limiting mechanism includes a retaining ring 20, which is fixedly connected to one end of the pin 6. The other end of the pin 6 has a limiting hole 19, and a spring pin 9 is provided in the limiting hole 19. The retaining ring 20 and the spring pin 9 prevent the pin 6 from moving axially, ensuring that the pin 6 will not come off the mounting hole 18.

[0022] The first nut 4, the second nut 17, and the blocking nut 10 are all stainless steel nuts. The use of stainless steel nuts prevents corrosion and facilitates the disassembly of the nuts.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A chair back rocking mechanism, comprising two supporting legs (3), characterized in that, The two support legs (3) are connected to the seat support assembly (5) by a fixing mechanism. The two seat support assemblies (5) are each provided with a connecting rod (7). The two connecting rods (7) are each fitted with a spring (8). The two seat support assemblies (5) are each connected to a swing bracket (2) by a rotating mechanism. One end of the two springs (8) abuts against the seat support assembly (5) and the other end abuts against the swing bracket (2). The two swing brackets (2) are each provided with a second through hole (16). The two connecting rods (7) pass through the two second through holes (16) respectively. The upper end of the two connecting rods (7) is provided with a blocking mechanism.

2. The chair back rocking mechanism according to claim 1, characterized in that, The blocking mechanism includes a blocking nut (10), which is threaded to the upper end of the connecting rod (7). A washer (11) is provided at the lower end of the blocking nut (10), and the washer (11) is sleeved on the connecting rod (7).

3. A chair back rocking mechanism according to claim 1, characterized in that, A rubber pad (12) is fixedly connected to the swing bracket (2), and the rubber pad (12) is sleeved on the connecting rod (7).

4. A chair back rocking mechanism according to claim 1, characterized in that, Both of the aforementioned seat support assemblies (5) are fitted with swing brackets (2).

5. A chair back rocking mechanism according to claim 2, characterized in that, The fixing mechanism includes a first through hole (15). The support leg (3) has two first through holes (15). A bolt (14) is installed in one of the first through holes (15). The bolt (14) passes through the seat support assembly (5). The lower end of the bolt (14) is threaded with a first nut (4). The first nut (4) abuts against the support leg (3). The connecting rod (7) passes through the seat support assembly (5) and extends into the other first through hole (15). The lower end of the connecting rod (7) is threaded with a second nut (17).

6. A chair back rocking mechanism according to claim 5, characterized in that, The rotating mechanism includes a mounting hole (18) which is opened on the rocker bracket (2). A pin (6) is provided in the mounting hole (18). The pin (6) passes through the seat support assembly (5). A limit mechanism is provided at the end of the pin (6).

7. A chair back rocking mechanism according to claim 6, characterized in that, The limiting mechanism includes a retaining ring (20), which is fixedly connected to one end of a pin (6). The other end of the pin (6) has a limiting hole (19), and a spring pin (9) is provided in the limiting hole (19).

8. A chair back rocking mechanism according to claim 6, characterized in that, The first nut (4), the second nut (17), and the blocking nut (10) are all stainless steel nuts.

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