CN206491550U

CN206491550U - Backrest adjustment mechanism

Info

Publication number: CN206491550U
Application number: CN201621321249.3U
Authority: CN
Inventors: 朱顺东
Original assignee: DONGGUAN BOYI FURNITURE Co Ltd
Current assignee: DONGGUAN BOYI FURNITURE Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2017-09-15
Anticipated expiration: 2026-12-02

Abstract

The utility model discloses a kind of backrest adjustment mechanism, including the first socket joint being mutually pivotally connected and second joint seat, the pull bar, spring and the connector that connect first socket joint and second joint seat, first socket joint can rotate around second joint seat, the first end of the pull bar is fixedly connected in first socket joint, second end of the pull bar passes through second joint seat, the spring is arranged between the second end of the pull bar and the connector, and the connector is fixedly connected through the spring and with the second end of the pull bar.The backrest adjustment mechanism take space is small, simple in construction, stability is good and with low cost, it is adaptable to promote the use of.

Description

Backrest adjustment mechanism

Technical field

The utility model is related to field of furniture, more particularly to a kind of backrest adjustment mechanism suitable for chair.

Background technology

Chair is widely used by family or office space, in order to ensure comfortableness that chair is used, a kind of existing office Chair has the adjustable function of backrest, when people sits down and leans against on backrest, and certain angle change and shape can occur for backrest Become.However, such a backrest is typically that itself is flexible or use elastic connection in the end of backrest and seat portion, easily produce Elastic fatigue causes backrest to damage.Though some other back regulating structures can obtain good comfort and inclination, element Complexity is constituted, is unfavorable for inexpensive production.

Therefore, it is necessary to a kind of improved backrest adjustment mechanism be provided, to overcome above-mentioned the deficiencies in the prior art.

Utility model content

The purpose of this utility model is to provide a kind of backrest adjustment mechanism, and the space that it takes is small, simple in construction, stably Property is good and with low cost, it is adaptable to promote the use of.

To achieve the above object, the technical solution of the utility model is：A kind of backrest adjustment mechanism, including be mutually pivotally connected First socket joint and second joint seat, the pull bar, spring and the connector that connect first socket joint and second joint seat, First socket joint can rotate around second joint seat, and the first end of the pull bar is fixedly connected on first socket joint On, the second end of the pull bar is through second joint seat, and the spring is arranged at the second end of the pull bar and the company Between fitting, the connector is fixedly connected through the spring and with the second end of the pull bar.

Compared with prior art, when the first socket joint is rotated down with respect to second joint seat, pull bar is driven to moving to left Dynamic, affixed connector is also moved to the left with the other end of pull bar, so that compression spring；When backrest loses external force effect, bullet Spring recovers as former state, so that the flexible regulatory function of backrest.Backrest adjustment mechanism of the present utility model is simple in construction, it is empty to take Between it is few, backrest can be adjusted according to human body relaxed position, so as to make one to feel comfortably cool, and its stability is good, with low cost, is applicable Promoted the use of in industrially

It is preferred that offering the first holding tank in first socket joint, the second appearance is offered on the second joint seat Receive groove, the first end of the pull bar passes through first holding tank, and the second end of the pull bar is contained in second holding tank.

It is preferred that the periphery wall in second holding tank is supported in one end of the spring, the other end of the spring is supported Push up the connector.

It is preferred that the size of first holding tank is adapted to rotates 12 degree for the pull bar.

It is preferred that first socket joint and second joint seat are pivotally connected by rotating shaft, it is adjacent in first socket joint The position of the nearly rotating shaft is provided with rotary stopper pin to limit the rotating distance of the pull bar.

It is preferred that the left and right sides of first socket joint is additionally provided with sound insulating pad.

It is preferred that the second joint seat is clamped in the outside of the sound insulating pad, the left and right sides of the second joint seat It is additionally provided with joint lid.

It is preferred that the upper end of first socket joint is used to be connected with the back bracket of carrier, the second joint seat Lower end is used to be connected with the support body of carrier.

Brief description of the drawings

Fig. 1 is that backrest adjustment mechanism of the present utility model applies a schematic perspective view on chair.

Fig. 2 is Fig. 1 partial exploded view.

Fig. 3 is Fig. 1 partial sectional view.

Fig. 4 is sectional views of the Fig. 3 along line A-A.

Fig. 5 is the use state variation diagram of the chair with backrest adjustment mechanism.

Embodiment

Element numbers similar in embodiment of the present utility model, accompanying drawing, which are described, with reference now to accompanying drawing represents similar member Part.

The utility model aims to provide a kind of backrest adjustment mechanism, and it is suitable for application in chair etc. and has backed carrier On, the present embodiment is described using chair as carrier, but the utility model is not limited to the example in figure.

As shown in Figure 1-2, the backrest adjustment mechanism 100 is arranged in the back bracket 21 of chair 1, specifically, its one end It is connected with back bracket 11, the other end is connected with seat 22.The backrest adjustment mechanism 100 includes the first socket joint being mutually pivotally connected 110 and second joint seat 120, the first socket joint 110 can around second joint seat 120 rotate.Specifically, second joint seat 120 Groove is provided with, the first socket joint 110 is embedded in the groove, so that second joint seat 120 clamps the first socket joint 110, both Connected by rotating shaft 19.The backrest adjustment mechanism 100 also includes the pull bar of the first socket joint 110 of connection and second joint seat 120 130th, spring 140 and connector 150, specifically, the first end of the pull bar 130 are fixedly connected in the first socket joint 110, pull bar 130 the second end is through second joint seat 120, and spring 130 is arranged between the second end of pull bar 130 and connector 150, connection Part 150 is fixedly connected through spring 130 and with the second end of pull bar 130.

Specifically, as shown in figure 4, offering the first holding tank 111 in first socket joint 110, on second joint seat 120 The second holding tank 121 is offered, the first holding tank 111 is connected with the second holding tank 121.The first end of pull bar 130 is through the One holding tank 111, the second end of pull bar 130 is contained in the second holding tank 121. specifically, and the first end of pull bar 130 passes through positioning Pin 131 is fixed in the first socket joint 110.Specifically, the size of first holding tank 111 is adapted to for the rotation of pull bar 130 12 Degree, that is, the size of the first holding tank 111 should be available for pull bar 130 to rotate 12 degree.One end of spring 140 is supported to be accommodated second The periphery wall of groove 121, be also on the terminal surface of second joint seat 120, and connector 150 is then set in spring 140 makes bullet The other end of spring 140 is supported on connector 150, then the fixed company in end (i.e. the second end) of connector 150 and pull bar 130 Connect.So, when pull bar 130 rotates with the first socket joint 110, connector 150 is interlocked so that spring 140 compresses, so that Possesses elasticity.Alternatively, the connector 150 is screw.

It is preferred that the left and right sides of the first socket joint 110 is additionally provided with sound insulating pad 112, by screw and pad, sound insulating pad 112 are fixed in the first socket joint 110, and second joint seat 120 is clamped in the outside of sound insulating pad 112.In order to limit pull bar 130 In excessively rotation, first socket joint 110 rotary stopper pin 113 is provided with the position of neighbouring rotating shaft 19.It is good outer in order to ensure See, the left and right sides of second joint seat 120 is provided with joint lid 122.

With reference to Fig. 1-5, when backrest is by external force, the relative second joint seat 120 of the first socket joint 110 is rotated down, Fig. 5, Fig. 3 are shown as counterclockwise, being moved to the left because pull bar 130 is fixed in the first socket joint 110 therefore is driven, because This, the connector 150 that the other end of pull bar 130 is affixed is also moved to the left, so that compression spring 140 makes its deformation.When backrest loses When going the external force to act on, the spring 140 recovers as former state, and backrest sets back.So as to the flexible regulatory function of the backrest.This reality With new backrest adjustment mechanism 100 is simple in construction, space-consuming is few, backrest can be adjusted according to human body relaxed position, so that Make one to feel comfortably cool, and its stability is good, it is with low cost, it is adaptable to industrially to promote the use of.

Above disclosed is only preferred embodiment of the present utility model, can not limit this practicality with this certainly new The interest field of type, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the utility model and are covered Scope.

Claims

1. a kind of backrest adjustment mechanism, including be mutually pivotally connected the first socket joint and second joint seat, connect first joint Pull bar, spring and the connector of seat and second joint seat, first socket joint can rotate around second joint seat, its It is characterised by：The first end of the pull bar is fixedly connected in first socket joint, and the second end of the pull bar is described in Second joint seat, the spring is arranged between the second end of the pull bar and the connector, and the connector is described in Spring is simultaneously fixedly connected with the second end of the pull bar.

2. backrest adjustment mechanism as claimed in claim 1, it is characterised in that：The first receiving is offered in first socket joint The second holding tank is offered on groove, the second joint seat, the first end of the pull bar passes through first holding tank, the drawing Second end of bar is contained in second holding tank.

3. backrest adjustment mechanism as claimed in claim 2, it is characterised in that：One end of the spring is supported to hold described second Receive the periphery wall of groove, the other end of the spring supports the connector.

4. backrest adjustment mechanism as claimed in claim 2, it is characterised in that：The size of first holding tank, which is adapted to, supplies institute State pull bar and rotate 12 degree.

5. backrest adjustment mechanism as claimed in claim 1, it is characterised in that：First socket joint and second joint seat It is pivotally connected by rotating shaft, the position of the neighbouring rotating shaft is provided with rotary stopper pin to limit the pull bar in first socket joint Rotating distance.

6. backrest adjustment mechanism as claimed in claim 1, it is characterised in that：The left and right sides of first socket joint is additionally provided with Sound insulating pad.

7. backrest adjustment mechanism as claimed in claim 6, it is characterised in that：The second joint seat is clamped in the sound insulation The outside of pad, the left and right sides of the second joint seat is additionally provided with joint lid.

8. backrest adjustment mechanism as claimed in claim 1, it is characterised in that：The upper end of first socket joint is used for and carrier Back bracket be connected, the lower end of second joint seat is used to be connected with the support body of carrier.