Seat back glide mechanism and office chair

Abstract

The utility model provides a seat back gliding mechanism and office chair, seat back gliding mechanism includes: chair back, a plurality of sliding guides on the chair back, be used for with the assembly of the backrest of office chair gliding board, be provided with a plurality of lifting slide rails on the gliding board, lifting slide rail and sliding guide sliding cooperation, gliding board can realize relative chair back lifting through the cooperation of lifting slide rail and sliding guide, a plurality of gliding elastic members are connected between chair back and gliding board, when gliding board drops, gliding elastic member is extruded or stretched by gliding board and produces elastic deformation. Relative to prior art, the utility model discloses a seat back gliding mechanism can move downward to adapt to support the user, and utilize the elastic force of gliding elastic member to provide the buffer when the user sits the office chair, and the elastic force can also make the backrest installed on the gliding board keep close to the back of the user, can satisfy the adaptation to the user's body shape.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, specifically to a seat back gliding mechanism and an office chair. Background Technology

[0002] Office chairs refer to various types of chairs provided for convenience during daily work and social activities. Since sitting in office chairs for extended periods can easily lead to many adverse health effects, and significantly increases the risk of cervical spondylosis, headrests are typically included in these chairs to facilitate rest and relaxation for office workers.

[0003] Office chairs typically consist of a base, seat, backrest, backrest, and headrest. The base usually has multiple casters to facilitate the movement of the office chair. The seat is fixed to the base for the user to sit on. The backrest is located at the back of the seat, and the backrest is installed on the seat to support the user's back. The headrest is installed on the backrest to support the user's head.

[0004] Currently, backrests are usually fixed to the chair back. The chair back can only adapt to users of different body types by using its own elastic cushions. However, the position of the backrest sometimes cannot adapt well to the user's body type, resulting in a poor user experience. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies in the prior art and to provide a seat back gliding mechanism and an office chair.

[0006] One embodiment of this utility model provides a seat back gliding mechanism, comprising:

[0007] A chair back, with several sliding guides on the chair back;

[0008] A glider for mounting to the back of an office chair, the glider having several lifting rails that slide in conjunction with sliding guides, the glider being able to rise and fall relative to the chair back through the cooperation of the lifting rails and the sliding guides, a number of gliding elastic elements connecting the chair back and the glider, the glider elastic elements undergoing elastic deformation due to compression or stretching by the glider when the glider descends.

[0009] In some alternative implementations, the sliding guide is secured to the chair back by a threaded connection.

[0010] In some optional embodiments, the lifting slide rail includes a first slide groove and a second slide groove that are interconnected, the first slide groove and the second slide groove being arranged sequentially in a direction away from the chair back, the width of the second slide groove being greater than that of the first slide groove, a limiting step being formed between the first slide groove and the second slide groove, the sliding guide including a first sliding part and a second sliding part that are interconnected, the first sliding part slidingly engaging with the first slide groove, the second sliding part slidingly engaging with the second slide groove, the threaded member passing through the second sliding part and the first sliding part, and then threadedly engaging with the chair back, the second sliding part being restricted between the limiting step and the cap of the threaded member.

[0011] In some alternative embodiments, the chair back has a plurality of sliding guides, and the glider has a plurality of lifting rails, with the sliding guides corresponding to and slidingly engaging with the lifting rails.

[0012] In some alternative embodiments, the gliding elastic element includes a plurality of tension springs, the two ends of which are respectively connected to the seat back and the glider.

[0013] In some alternative embodiments, a first hook portion is provided on the chair back, a second hook portion is provided on the glider, and the top and bottom ends of the tension spring are respectively hooked and engaged with the first hook portion and the second hook portion.

[0014] Another embodiment of this utility model provides an office chair, including: a seat back gliding mechanism as described above.

[0015] In some alternative implementations, the office chair also includes a backrest and a headrest structure, the backrest being mounted on the glider and the headrest structure being mounted on the backrest.

[0016] In some optional embodiments, the headrest structure includes a mounting structure and a headrest body. The mounting structure is detachably mounted on the backrest, and the headrest body is movably mounted on the mounting structure and can move back and forth relative to the mounting structure. A plurality of cushioning elastic elements are provided between the headrest body and the mounting structure.

[0017] In some optional embodiments, the headrest body has an internal movable cavity with a guide groove that connects to the outside of the headrest body;

[0018] The mounting structure is provided with a sliding support part, which is movably disposed in the movable cavity. A portion of the sliding support part slides in conjunction with the guide groove. The buffer elastic element is disposed in the movable cavity and connected to the sliding support part.

[0019] Compared to existing technologies, the seat back gliding mechanism of this invention can move downwards to adapt to support the user, and utilizes the elasticity of the gliding elastic element to provide cushioning when the user sits in the office chair. The elasticity also allows the backrest mounted on the gliding board to remain close to the user's back, thus meeting the requirements for adapting to the user's body shape. In addition, the headrest structure that can move back and forth can also provide cushioning in the front and back directions and fit the user's head to adapt to users of different body shapes.

[0020] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a seat back gliding mechanism according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of the gliding mechanism on the back of a seat according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a sliding guide according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of a seat back gliding mechanism according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a glider according to an embodiment of the present invention;

[0026] Figure 6 This is a structural schematic diagram of an office chair according to an embodiment of the present invention;

[0027] Figure 7 This is a cross-sectional view of a headrest structure according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Chair back; 11. Sliding guide; 111. Threaded part; 112. First sliding part; 113. Second sliding part; 12. First hook part; 20. Glider; 21. Lifting rail; 211. First slide groove; 212. Second slide groove; 213. Limiting step part; 22. Gliding elastic element; 221. Tension spring; 23. Second hook part; 30. Backrest; 40. Headrest structure; 41. Mounting structure; 42. Headrest body; 43. Cushioning elastic element; 44. Movable cavity; 441. Guide slide groove; 45. Sliding support part. Detailed Implementation

[0030] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments thereof. Please refer to... Figures 1 to 2 One embodiment of the present invention provides a gliding mechanism for a seat back 10, including: a seat back 10 and a gliding board 20 for assembly with the backrest 30 of an office chair;

[0031] Several sliding guides 11 are mounted on the chair back 10;

[0032] The glider 20 is provided with several lifting rails 21, which are slidably engaged with the sliding guide 11. The glider 20 can be raised and lowered relative to the backrest 10 through the cooperation of the lifting rails 21 and the sliding guide 11. Several gliding elastic elements 22 are connected between the backrest 10 and the glider 20. When the glider 20 descends, the gliding elastic elements 22 are compressed or stretched by the glider 20 and undergo elastic deformation, thus generating elastic force.

[0033] The working principle of the 10 gliding mechanisms on the seat back of this utility model according to one embodiment is explained below:

[0034] The backrest 10 is installed on the seat. When the user sits on the seat, the user's back rests against the backrest 30 installed on the glider 20. At this time, the glider 20 can move downward to adapt to support the user. The glider elastic element 22 will be compressed or stretched by the glider 20 and produce elastic deformation. The elastic force of the glider elastic element 22 provides cushioning when the user sits in the office chair. Moreover, the elastic force can also keep the backrest 30 installed on the glider 20 close to the user's back, which can meet the adaptation of the user's body shape.

[0035] Please see Figure 3 In some alternative embodiments, the sliding guide 11 is locked to the backrest 10 by a threaded member 111, thereby facilitating the installation of the sliding guide 11.

[0036] Please see Figure 4In some optional embodiments, the lifting slide rail 21 includes a first slide groove 211 and a second slide groove 212 that are interconnected. The first slide groove 211 and the second slide groove 212 are arranged sequentially in a direction away from the backrest 10. The width of the second slide groove 212 is greater than that of the first slide groove 211. A limiting step portion 213 is formed between the first slide groove 211 and the second slide groove 212. The sliding guide member 11 includes a first sliding part 112 and a second sliding part 113 that are interconnected. The first sliding part 112 is slidably engaged with the first slide groove 211, and the second sliding part 113 is slidably engaged with the second slide groove 212. A threaded member 111 passes through the second slide groove 212. The moving part 113 and the first sliding part 112 are then threaded together with the backrest 10. The second sliding part 113 is restricted between the limiting step part 213 and the cap of the threaded part 111. The first sliding part 112 and the second sliding part 113 are respectively engaged with the first slide groove 211 and the second slide groove 212, thereby effectively improving the sliding stability of the glider 20. The second slide groove 212 can also hide the cap of the threaded part 111. In addition, the position of the second sliding part 113 is mechanically restricted by the cap of the threaded part 111, thereby restricting the limiting step part 213, so that the glider 20 is restricted on the backrest 10.

[0037] In some alternative embodiments, the backrest 10 has multiple sliding guides 11, and the glider 20 has multiple lifting rails 21. The sliding guides 11 slide in cooperation with the lifting rails 21, and the multiple sliding guides 11 cooperate to guide the glider 20, thereby improving the sliding stability of the glider 20.

[0038] The specific structure of the gliding elastic element 22 can be designed according to actual needs. For example, in some optional embodiments, the gliding elastic element 22 includes multiple tension springs 221. The two ends of the tension springs 221 are connected to the backrest 10 and the glider 20, respectively. When the glider 20 descends, the glider 20 stretches the tension springs 221, causing the tension springs 221 to undergo elastic deformation. The glider 20 is essentially suspended by multiple tension springs 221, which can achieve relatively stable cushioning.

[0039] Please see Figure 5 In order to facilitate the installation of the tension spring 221, in some optional embodiments, a first hook part 12 is provided on the backrest 10 and a second hook part 23 is provided on the glider 20. The top and bottom ends of the tension spring 221 are hooked and engaged with the first hook part 12 and the second hook part 23 respectively, thereby fixing the tension spring 221.

[0040] Please see Figure 6 The aforementioned 10-part gliding mechanism for a seat back can be applied to an office chair, which includes: the aforementioned 10-part gliding mechanism for a seat back.

[0041] In some alternative implementations, the office chair also includes a backrest 30 and a headrest structure 40, with the backrest 30 mounted on the glider 20 and the headrest structure 40 mounted on the backrest 30 for supporting the user's head.

[0042] Please see Figure 7 In some optional embodiments, the headrest structure 40 includes a mounting structure 41 and a headrest body 42. The mounting structure 41 is detachably mounted on the backrest 30, and the headrest body 42 is movably mounted on the mounting structure 41 and can move back and forth relative to the mounting structure 41. A plurality of cushioning elastic elements 43 are provided between the headrest body 42 and the mounting structure 41. The headrest body 42 can move back and forth relative to the mounting structure 41. When the user's head rests on the headrest body 42, the headrest body 42 moves backward under the pressure of the user's head, thus adaptively changing according to the position of the user's head. At this time, the cushioning elastic elements 43 will be compressed or stretched by the headrest body 42 and undergo elastic deformation. The elastic force of the cushioning elastic elements 43 is forward, and its elastic force acts on the headrest body 42, so that the headrest body 42 is also indirectly affected by the elastic force of the cushioning elastic elements 43 and is pressed tightly against the user's head, thereby providing stable support for the head.

[0043] In some optional embodiments, the headrest body 42 has an internal movable cavity 44 with a guide groove 441 that connects to the outside of the headrest body 42. The mounting structure 41 has a sliding support part 45 that is movably disposed in the movable cavity 44. Part of the sliding support part 45 slides in conjunction with the guide groove 441. The buffer elastic element 43 is disposed in the movable cavity 44 and connected to the sliding support part 45. The cooperation between the movable cavity 44 and the guide groove 441 guides the movement of the sliding support part 45, making the headrest body 42 more stable. The movable cavity 44 also helps to stably assemble the buffer elastic element 43.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gliding mechanism for the back of a seat, characterized in that, include: A chair back, with several sliding guides on the chair back; A glider for mounting to the back of an office chair, the glider having several lifting rails that slide in conjunction with sliding guides, the glider being able to rise and fall relative to the chair back through the cooperation of the lifting rails and the sliding guides, a number of gliding elastic elements connecting the chair back and the glider, the glider elastic elements undergoing elastic deformation due to compression or stretching by the glider when the glider descends.

2. The seat back gliding mechanism according to claim 1, characterized in that: The sliding guide is locked onto the chair back by a threaded component.

3. The seat back gliding mechanism according to claim 2, characterized in that: The lifting slide rail includes a first slide groove and a second slide groove that are interconnected. The first slide groove and the second slide groove are arranged sequentially in a direction away from the chair back. The width of the second slide groove is greater than that of the first slide groove. A limiting step is formed between the first slide groove and the second slide groove. The sliding guide includes a first sliding part and a second sliding part that are interconnected. The first sliding part is slidably engaged with the first slide groove, and the second sliding part is slidably engaged with the second slide groove. The threaded part passes through the second sliding part and the first sliding part and then is threadedly engaged with the chair back. The second sliding part is restricted between the limiting step and the cap of the threaded part.

4. The seat back gliding mechanism according to claim 1, characterized in that: The chair back has multiple sliding guides, and the glider is provided with multiple lifting rails, with the sliding guides corresponding to and slidingly engaging with the lifting rails.

5. A seat back gliding mechanism according to any one of claims 1 to 4, characterized in that: The gliding elastic element includes multiple tension springs, with both ends of the tension springs connected to the chair back and the gliding board, respectively.

6. A seat back gliding mechanism according to claim 5, characterized in that: The chair back is provided with a first hook part, the glider is provided with a second hook part, and the top and bottom ends of the tension spring are respectively hooked and engaged with the first hook part and the second hook part.

7. An office chair, characterized in that, include: A seat back gliding mechanism as described in any one of claims 1 to 6.

8. An office chair according to claim 7, characterized in that, It also includes a backrest and a headrest structure, the backrest being mounted on the glider and the headrest structure being mounted on the backrest.

9. An office chair according to claim 8, characterized in that: The headrest structure includes a mounting structure and a headrest body. The mounting structure is detachably mounted on the backrest. The headrest body is movably mounted on the mounting structure and can move back and forth relative to the mounting structure. Several cushioning elastic elements are provided between the headrest body and the mounting structure.

10. An office chair according to claim 9, characterized in that: The headrest body has an internal movable cavity, and the movable cavity has a guide groove that connects to the outside of the headrest body. The mounting structure is provided with a sliding support part, which is movably disposed in the movable cavity. A portion of the sliding support part slides in conjunction with the guide groove. The buffer elastic element is disposed in the movable cavity and connected to the sliding support part.

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