CN214386838U

CN214386838U - Waist rest lifting mechanism of swivel chair

Info

Publication number: CN214386838U
Application number: CN202120354570.6U
Authority: CN
Inventors: 彭汉强
Original assignee: Zhejiang Yueqiang Furniture Technology Co Ltd
Current assignee: Zhejiang Yueqiang Furniture Technology Co Ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-10-15
Anticipated expiration: 2031-02-08

Abstract

The utility model belongs to the technical field of the swivel chair, especially, relate to a swivel chair waist leans on elevating system. It has solved current waist and has leaned on defects such as can not go up and down. This elevating system is leaned on to swivel chair waist includes that fixed stay and waist lean on, and the lift section of thick bamboo that the waist leaned on is equipped with a plurality of locking mouths that down set gradually from the last on the surface that fixed stay is close to human back, leans on or is equipped with the elasticity hasp of card in arbitrary one locking mouth on the waist, leans on or the lift section of thick bamboo when the relative fixed stay motion of a vertical exogenic action the elasticity hasp breaks away from and gets into to next locking mouth from last locking mouth. The utility model discloses the advantage: by utilizing the mutual synergistic action of the locking port and the elastic lock catch, the rotary chair can be axially locked at different positions so as to meet the use requirements of the waist rest at different heights and further enrich the use functions of the rotary chair.

Description

Waist rest lifting mechanism of swivel chair

Technical Field

The utility model belongs to the technical field of the swivel chair, especially, relate to a swivel chair waist leans on elevating system.

Background

The swivel chair provides a very good comfort of use.

The waist is by its general fixed mounting on the base of seat supports, and it can't adjust the relative position that the waist was by oneself to different user groups, influences swivel chair use satisfaction.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, provide a swivel chair waist that can solve above-mentioned technical problem leans on elevating system.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

this elevating system is leaned on to swivel chair waist includes that fixed stay and waist lean on, and the lift section of thick bamboo that the waist leaned on is equipped with a plurality of locking mouths that down set gradually from the last on the surface that fixed stay is close to human back, leans on or is equipped with the elasticity hasp of card in arbitrary one locking mouth on the waist, leans on or the lift section of thick bamboo when the relative fixed stay motion of a vertical exogenic action the elasticity hasp breaks away from and gets into to next locking mouth from last locking mouth.

In the above-mentioned swivel chair lumbar support lifting mechanism, the elastic lock catch is U-shaped, and the end parts of both ends of the elastic lock catch are respectively provided with a mounting fixing hole.

In the above-mentioned swivel chair lumbar lifting mechanism, the lumbar comprises a front half and a rear half, which are connected at their peripheries and form an internal cavity therebetween.

In the above-mentioned swivel chair lumbar rest elevating system, the upper end of a lifting cylinder is connected at the central position below the middle part of the rear half piece, and the upper end of the lifting cylinder extends into the inner cavity.

In the waist rest lifting mechanism of the swivel chair, one end of the lifting cylinder extending into the inner cavity is provided with a communicating port communicated with the inner cavity, the upper end of the elastic lock catch is arranged on the outer surface of the upper end of the lifting cylinder extending into the inner cavity, and the lower end of the elastic lock catch obliquely extends into the communicating port and is clamped on any one locking port.

In the waist rest lifting mechanism of the swivel chair, one surface of the fixed support, which is close to the human body, is provided with a middle convex rib arranged along the length direction of the fixed support, and the locking port is arranged on one side, which is far away from the fixed support, of the middle convex rib.

In the waist rest lifting mechanism of the swivel chair, the periphery of one surface of the fixed support, which is close to the human body, is provided with a peripheral convex rib, and two ends of the middle convex rib are connected to the inner wall of the peripheral convex rib.

In the above-mentioned lifting gearing is leaned on to swivel chair waist, the elasticity hasp includes the C shape portion that matches with the locking mouth, is connected with the rake respectively at the upside both ends of C shape portion, and the rake upwards inclines towards human one side, is connected with straight installation department respectively at each rake upper end.

In the waist rest lifting mechanism of the swivel chair, two bosses are arranged on the outer surface of the upper end of the lifting cylinder extending into the inner cavity, one straight mounting part is fixed on one boss, and the other straight mounting part is fixed on the other boss.

In the above-mentioned lifting mechanism for the waist rest of the swivel chair, each boss is provided with an inclined surface which is inclined downwards towards one side of the human body, and the boss is fixed on the corresponding inclined surface.

Compared with the prior art, the waist rest lifting mechanism of the swivel chair has the advantages that:

by utilizing the mutual synergistic action of the locking port and the elastic lock catch, the rotary chair can be axially locked at different positions so as to meet the use requirements of the waist rest at different heights and further enrich the use functions of the rotary chair.

Drawings

Fig. 1 is a schematic view of a swivel chair provided by the present invention.

Fig. 2 is a schematic structural view of the lumbar support provided by the present invention with the front half removed.

Fig. 3 is a schematic view of the lifting mechanism structure provided by the present invention.

Fig. 4 is a schematic view of the elastic lock structure provided by the present invention.

In the figure, a fixed support 10, a locking opening 10a, a middle rib 100, a peripheral rib 101, a lumbar support 20, a front half piece 20a, a rear half piece 20b, a lifting cylinder 30, a communication opening 30a, a boss 300, an elastic lock catch 40, an installation fixing hole 40a, a C-shaped part 400, an inclined part 401 and a straight installation part 402.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-3, the swivel chair lumbar lifting mechanism comprises a fixed support 10 and a lumbar 20, wherein the fixed support 10 is fixed on a base and is arranged in a vertical state.

The side of the waist support 20 close to the human body is provided with an arc-shaped surface matched with the waist of the human body, so that the waist support is comfortable and supportive.

The lifting cylinder 30 on the lumbar support 20 is sleeved on the fixed support 10, and the lifting cylinder 30 can improve the stability of the lumbar support 20 in the lifting position adjusting process. Preferably, the lumbar support 20 and the lift cylinder 30 of the present embodiment are integrally injection molded.

A plurality of locking openings 10a are arranged on one surface of the fixed support 10 close to the back of a human body in sequence from top to bottom, and a convex part is formed between every two adjacent locking openings 10a, namely, the fixed support is equivalent to a tooth-shaped structure.

An elastic lock catch 40 clamped in any one of the lock notches 10a is arranged on the waist rest 20 or the lifting cylinder 30, and when the waist rest 20 or the lifting cylinder 30 moves relative to the fixed support 10 under the action of vertical external force, the elastic lock catch 40 is separated from the last lock notch 10a and enters the next lock notch 10 a.

The resilient catch 40 has a very good resilience in itself, which enables disengagement from the previous locking opening 10a and entry into the next locking opening 10 a.

The matching of the elastic lock 40 and the locking opening 10a can adjust the position of the waist support 20 at any position, so as to meet the use requirements of different users and further enrich the use function of the swivel chair.

Specifically, the lumbar support 20 of the present embodiment includes a front half 20a and a back half 20b, the front half 20a and the back half 20b being peripherally joined and forming an interior cavity therebetween. Secondly, the upper end of a lift section of thick bamboo 30 is connected at the below-middle position in middle part of latter half 20b to the upper end of a lift section of thick bamboo 30 stretches into to inside cavity, secondly, is equipped with the intercommunication mouth 30a with inside cavity intercommunication in the one end that a lift section of thick bamboo 30 stretched into to inside cavity, and the upper end of elastic lock catch 40 is installed and is stretched into the upper end surface to inside cavity at a lift section of thick bamboo 30, and the lower extreme slope of elastic lock catch 40 stretches into intercommunication mouth 30a and blocks on arbitrary one locking mouth 10 a.

Utilize the space of inside to install, not only can protect elasticity hasp 40, but also can further prolong elevating system life to and can also make overall structure more pleasing to the eye.

In addition, a middle rib 100 is arranged on one surface of the fixed support 10 close to the human body along the length direction of the fixed support 10, and the locking opening 10a is arranged on one side of the middle rib 100 far away from the fixed support 10. The middle rib 100 can reduce the contact surface with the elastic lock 40 to improve the moving efficiency of the elastic lock 40 in different locking openings. Preferably, a peripheral rib 101 is provided on the periphery of the surface of the fixed support 10 near the human body, and both ends of the middle rib 100 are connected to the inner wall of the peripheral rib 101.

The peripheral bead 101 serves for protection and reinforcement.

Specifically, as shown in fig. 4, the elastic latch 40 of the present embodiment has a U shape, and both end portions of the elastic latch 40 are respectively provided with mounting fixing holes 40 a. Further, the elastic locking buckle 40 includes a C-shaped portion 400 matching the locking opening 10a, inclined portions 401 are respectively connected to both ends of an upper side of the C-shaped portion 400, the inclined portions 401 are inclined upward and toward a human body, and a flat installation portion 402 is respectively connected to an upper end of each inclined portion 401. The flat mounting portion 402 is provided with the above-described mounting fixing hole 40 a.

The inclined portion 401 and the flat mounting portion 402 form an angle greater than 90 °.

Next, as shown in fig. 2 to 3, two bosses 300 are provided on the outer surface of the upper end of the elevator cylinder 30 extending into the internal cavity, one flat mounting portion 402 is fixed to one of the bosses 300, and the other flat mounting portion 402 is fixed to the other boss 300. Each of the bosses 300 is provided with an inclined surface inclined downward toward a side of a human body, and the bosses 300 are fixed on the corresponding inclined surfaces.

The inclined surface may increase the elastic angle of the elastic locking buckle 40 to ensure the elastic performance of the elastic locking buckle 40.

Example two

The working principle and structure of the embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the waist support 20 is provided with an elastic lock 40 which is locked in any one of the locking openings 10 a.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Swivel chair waist leans on elevating system, leans on (20) including fixed stay (10) and waist, and a lift section of thick bamboo (30) cover on the waist leans on (20) on fixed stay (10), and its characterized in that is equipped with a plurality of locking mouth (10a) that down set gradually from the last on fixed stay (10) is close to a surface on human back, is equipped with elasticity hasp (40) of card in arbitrary one locking mouth (10a) on the waist leans on (20) or a lift section of thick bamboo (30), leans on (20) or a lift section of thick bamboo (30) when vertical external force effect relative fixed stay (10) motion down elasticity hasp (40) break away from and enter into next locking mouth (10a) from last locking mouth (10 a).

2. The revolving chair lumbar lifting mechanism according to claim 1, wherein the elastic latch (40) is U-shaped, and both end portions of the elastic latch (40) are respectively provided with a mounting fixing hole (40 a).

3. The swivel chair lumbar lift mechanism of claim 1, wherein the lumbar support (20) comprises a front half (20a) and a rear half (20b), the front half (20a) and the rear half (20b) being peripherally joined and forming an internal cavity therebetween.

4. The swivel chair lumbar lift mechanism of claim 3, wherein the upper end of the lift cylinder (30) is connected at a central location below the middle of the rear half (20b) and the upper end of the lift cylinder (30) extends into the interior cavity.

5. The revolving chair lumbar lifting mechanism according to claim 4, wherein a communication port (30a) communicated with the internal cavity is arranged at one end of the lifting cylinder (30) extending into the internal cavity, the upper end of the elastic lock catch (40) is arranged on the outer surface of the upper end of the lifting cylinder (30) extending into the internal cavity, and the lower end of the elastic lock catch (40) obliquely extends into the communication port (30a) and is clamped on any one of the locking ports (10 a).

6. The revolving chair lumbar lifting mechanism according to claim 1, wherein a surface of the fixed support (10) close to the human body is provided with a middle rib (100) arranged along the length direction of the fixed support (10), and the locking opening (10a) is arranged on the side of the middle rib (100) far away from the fixed support (10).

7. The revolving chair lumbar support lifting mechanism according to claim 6, wherein the fixed support (10) is provided with a peripheral rib (101) at the periphery of one surface close to the human body, and the two ends of the middle rib (100) are connected to the inner wall of the peripheral rib (101).

8. The revolving chair lumbar lifting mechanism according to claim 5, wherein the elastic lock catch (40) comprises a C-shaped part (400) matching the locking opening (10a), inclined parts (401) are respectively connected to both ends of the upper side of the C-shaped part (400), the inclined parts (401) are inclined upward and toward the side of the human body, and a straight mounting part (402) is respectively connected to the upper end of each inclined part (401).

9. The swivel chair lumbar lift mechanism of claim 8, wherein two bosses (300) are provided on the outer surface of the upper end of the lift cylinder (30) extending into the internal cavity, one of the flat mounting portions (402) being secured to one of the bosses (300) and the other flat mounting portion (402) being secured to the other boss (300).

10. The revolving chair lumbar lift mechanism according to claim 9, wherein each boss (300) is provided with an inclined surface inclined downward toward the human body side, and the boss (300) is fixed to the corresponding inclined surface.