CN112890490A

CN112890490A - Chair with detachable seat

Info

Publication number: CN112890490A
Application number: CN202110265513.5A
Authority: CN
Inventors: 石章能; 张明; 龙德学; 李波涛; 粟朝刚; 杨双华
Original assignee: Borgerui Chongqing Technology Co ltd
Current assignee: Borgerui Chongqing Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-06-04
Anticipated expiration: 2041-03-11
Also published as: CN112890490B

Abstract

The invention discloses a seat, which includes a support base, which is used for overall support; a seat cushion, the rear part of which is hinged with the support base and can be rotated around it; and a backrest, the lower part of which is hinged with the support base and can be rotated around the seat Rotation; a synchronous linkage mechanism is connected between the seat cushion and the backrest, the synchronous linkage mechanism correlates the rotational power of the seat cushion and the backrest so that the two can rotate relative to each other; a damping adjustment mechanism is arranged on the support base, the damping The adjustment mechanism works with the backrest or seat cushion to adjust the rotational resistance; the support base is also provided with a flip locking mechanism, which works with the backrest or seat cushion to lock in place. The significant effect of adopting the present invention is to improve the synergy of the seat back, seat basin/seat cushion when rotating and adjusting; it can independently adjust the turning resistance according to different customer needs, and has a self-recovery function after adjustment, which simplifies the structure and reduces the cost.

Description

Chair with detachable seat

Technical Field

The invention relates to a multifunctional integrated seat.

Background

Office chairs are important office furniture. Along with the demand of office crowd to office chair travelling comfort constantly increases, office chair is constantly developing to multi-functional direction gradually. At the present stage, the multifunctional office chair mainly needs to meet the following requirements besides meeting the requirements of people for sitting:

1. the seat backrest can be inclined, and the inclined angle can be adjusted and fixed so as to meet different lying requirements of passengers, such as half lying or full lying;

2. the seat cushion of the seat can be turned over by a certain angle, so that the front part of the seat cushion is upward and the rear part of the seat cushion is downward, and the knees of a passenger are raised to different degrees;

3. when the passenger has a rest, the legs can be supported by the leg supports, so that the comfort is improved.

In order to meet the above requirements, engineers in related fields have partial research results, and can meet corresponding requirements independently. However, due to lack of overall planning, on one hand, the structure adopted by the prior art is not simplified enough, and on the other hand, after the functions are combined by adopting the prior art, the office chair has a complex and bloated structure, and the structures corresponding to the functions are seriously interfered with each other, so that the office chair has the defects of heavy weight, insufficient aesthetic property and the like. Therefore, it is necessary to plan the implementation of each requirement as a whole again to integrate the functions. During the integration process, various structural members and linkage relations need to be planned and designed again.

Specifically, in the prior art, in the process of rotationally adjusting the backrest and the seat pan/seat cushion, independent adjustment is mostly performed, and the backrest and the seat pan/seat cushion need to be provided with independent turning structures and power devices, so that the synchronism is not strong, and the cost is high; the rotation resistance is not adjustable, and is corresponding untimely to customer's demand, and does not have the self-resuming function after adjusting generally, need to carry out reverse operation or set up electric mechanism manually and resume.

Disclosure of Invention

In view of the above, the present invention provides a seat without solving the above technical problems.

The technical scheme is as follows:

the key points of the seat are as follows: comprises a supporting base for supporting the whole body;

comprises a seat cushion, the rear part of which is hinged with the supporting base and can rotate around the supporting base;

comprises a backrest, the lower part of which is hinged with the supporting base and can rotate around the supporting base;

a synchronous linkage mechanism is connected between the seat cushion and the backrest, and the synchronous linkage mechanism mutually links the rotation power of the seat cushion and the rotation power of the backrest so that the seat cushion and the backrest can relatively rotate along with the rotation of the seat cushion and the backrest;

the support base is provided with a damping adjusting mechanism which acts with the backrest or the seat cushion to adjust the rotation resistance;

the support base is also provided with a turnover locking mechanism which plays a role of locking in place under the action of the backrest or the seat cushion.

Compared with the prior art, the invention has the beneficial effects that: the cooperativity of the backrest and the seat pan/cushion during rotation adjustment can be improved; the overturning resistance can be automatically adjusted according to different customer requirements, and the overturning resistance has a self-recovery function after adjustment, so that the structure is simplified, and the cost is reduced.

Drawings

FIG. 1 is a schematic perspective view of the present invention in a first state;

FIG. 2 is a schematic perspective view of the present invention in a second state;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a cross-sectional view X-X' of FIG. 3;

fig. 5 is a schematic view showing the connection relationship between the lifting link 66, the linking base 67 and the seat cushion 50 from the first perspective;

fig. 6 is a schematic view showing the connection relationship between the lift link 66, the linking base 67 and the seat cushion 50 from the second perspective.

Fig. 7 is a schematic view of the relationship between the pushing cam 622 and the elastic member 51.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1-7:

a chair includes a support base 90 for integral support;

comprises a seat cushion 50, the rear part of which is hinged with the supporting base 90 to rotate around the supporting base;

comprises a backrest, the lower part of which is hinged with the supporting base 90 and can rotate around the supporting base;

a synchronous linkage mechanism is connected between the seat cushion 50 and the backrest, and the synchronous linkage mechanism mutually links the rotation power of the seat cushion 50 and the rotation power of the backrest so that the seat cushion 50 and the backrest can relatively rotate along with the rotation of the backrest;

a damping adjusting mechanism is arranged on the supporting base 90, and the damping adjusting mechanism and the backrest or the seat cushion 50 act to adjust the rotation resistance;

a roll-over locking mechanism is also provided on the support base 90, and functions to lock the backrest or the seat cushion 50 in place.

The above scheme is further explained as follows:

the synchronous linkage mechanism comprises a seat-leaning linkage rotary seat 67, the seat-leaning linkage rotary seat 67 is hinged with the rear part of the supporting base 90, and the seat-leaning linkage rotary seat 67 rotates on the supporting base 90 around the hinged point of the seat-leaning linkage rotary seat 67;

the backrest is fixed on the seat-rest linkage rotating seat 67, and the seat cushion 50 is hinged with the seat-rest linkage rotating seat 67;

the seat is leaned on linkage swivel mount 67 and is connected with seatpad lifting connecting rod 66, seatpad lifting connecting rod 66's one end with the seat is leaned on linkage swivel mount 67 articulated, seatpad lifting connecting rod 66's the other end with seatpad 50 is articulated.

The seat-rest linkage rotation seat 67 includes a linkage propulsion seat 671 and a linkage propulsion arm 672, the linkage propulsion seat 671 is hinged to the support base 90, one end of the linkage propulsion arm 672 is connected to the linkage propulsion seat 671, the other end of the linkage propulsion arm 672 extends forward, and the front end of the linkage propulsion arm 672 is hinged to the seat cushion lifting link 66.

In order to adapt to different bowl adjusting requirements: a lifting constraint track is further provided on the support base 90 to limit the rotation angle and speed of the seat cushion 50, and the hinge point of the seat cushion lifting link 66 and the seat cushion linkage rotary seat 67 is limited by the lifting constraint track and moves according to a set constraint track.

The specific constrained trajectory scheme may be: support be equipped with the screens groove on the base 90, this screens groove is followed the lifting restraint orbit sets up, seatpad lifting connecting rod 66 with it is articulated through orbit restraint axle 65 between the linkage swivel mount 67 to lean on, the one end of orbit restraint axle 65 is inserted and is established the screens inslot and follow the lifting restraint orbit removes.

According to the trend of the lifting constraint track:

when the lifting constraint track is a constraint arc, and the center of the constraint arc coincides with the hinge point of the linkage propulsion seat 671 and the support base 90, the linkage propulsion arm 672 and the linkage propulsion seat 671 may be hinged or fixed;

when the lifting constraint track is arbitrarily set and is not an arc, or the center of the arc is not coincident with the hinge point of the linkage propulsion seat 671 and the support base 90, the linkage propulsion arm 672 and the linkage propulsion seat 671 should be hinged.

The damping adjusting mechanism comprises an elastic piece 51 and a pre-tightening adjusting component 52, wherein the pre-tightening adjusting component 52 is fixed on the supporting base 90;

the elastic piece 51 is connected with the seat rest linkage rotary seat 67 to provide rotation resistance for the seat rest linkage rotary seat;

the pretension adjusting assembly 52 is connected with the elastic member 51 to adjust the pretension thereof.

The pre-tightening adjusting assembly 52 comprises an elastic part restraining seat 521, the elastic part restraining seat 521 is fixed on the supporting base 90, a strip-shaped restraining hole is formed in the elastic part restraining seat 521, the length direction of the strip-shaped restraining hole is arranged along the deformation direction of the elastic part 51, the elastic part 51 moves along the strip-shaped restraining hole through a clamping head to deform, an elastic part pushing mechanism is further arranged on the elastic part restraining seat 521, and the elastic part pushing mechanism acts on the elastic part 51 to cause the elastic part 51 to deform along the direction of the strip-shaped restraining hole. As a more specific embodiment, the elastic member pushing mechanism includes a pushing cam 522, the pushing cam 522 is mounted on the elastic member restraining base 521 through a cam shaft, and the pushing cam 522 is disposed corresponding to and in contact with the elastic member 51; specifically, the elastic member 51 is a spiral spring or a gas spring, one end of the elastic member 51 is hinged to the seat rest linkage rotating seat 67, the other end of the elastic member 51 is fixed with the clamping head, the clamping head is slidably assembled in the strip-shaped constraint hole, and the pushing cam 522 abuts against the clamping head;

a driven gear 523 is fixedly sleeved on the cam shaft, a driving gear 524 is mounted on the support base 90, the driving gear 524 is meshed with the driven gear 523, the driving gear 524 is mounted on the support base 90 through a gear shaft, and a handle 525 is further fixed on the gear shaft.

The roll-over locking mechanism comprises a controllable gas spring 42 and a locking support 41, wherein the locking support 41 is fixed on the supporting base 90; one end of the controllable gas spring 42 is hinged to the support base 90, and the other end of the controllable gas spring 42 is hinged to the seat-leaning linkage rotary seat 67.

The controllable gas spring 42 is in the prior art, has a function that any position can be stopped, is provided with an unlocking cable, can unlock the controllable gas spring 42 by arranging a handle or a handle to operate the unlocking cable, can automatically stretch in the unlocking state of the controllable gas spring 42, and cannot stretch in the locking state of the controllable gas spring 2.

The supporting base 90 comprises a shell bottom 91, the edges of the shell bottom 91 are respectively turned upwards to form shell flanges 92, the inner walls of the two shell flanges 92 which are right opposite to each other at the left side are respectively hinged with the seat cushion linkage rotating bases 67, and the seat cushion lifting connecting rods 66 are respectively connected with the seat cushion linkage rotating bases 67; the elastic piece 51 is connected with one of the seat cushion linkage rotary bases 67, and the pre-tightening adjusting assembly 52 is positioned in front of the corresponding seat cushion linkage rotary base 67; the controllable gas spring 42 is hinged with the other seat-rest linkage rotary seat 67, and the locking support 41 is positioned in front of the corresponding seat-rest linkage rotary seat 67; the two seat rest linkage rotary bases 67 which are right opposite to each other at the left side are connected through a lifting synchronous rod 673.

The back includes back body and back connecting plate 4x the casing turn-ups 92 outside corresponds every the seat is equipped with respectively by linkage swivel mount 67 the back connecting plate 4x, back connecting plate 4x with the articulated shaft fixed connection of seat by linkage swivel mount 67, back connecting plate 4x to the rear of seatpad 50 is extended and is inwards turned over again and form the back fixed part, is equipped with the back fixed orifices on this back fixed part, the back connecting plate 4x of the left and right sides all with same the back body (not shown in the figure) is connected.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A seat, characterized in that: it comprises a support base (90) for playing an integral supporting role;

comprising a seat cushion (50), the rear part of which is hinged with the support base (90) so as to be rotatable around it;

comprising a backrest, the lower part of which is hinged with the support base (90) so as to be rotatable around it;

A synchronous linkage mechanism is connected between the seat cushion (50) and the backrest, and the synchronous linkage mechanism associates the rotational power of the seat cushion (50) and the backrest with each other so that the two can rotate relative to each other;

A damping adjustment mechanism is provided on the support base (90), and the damping adjustment mechanism acts with the backrest or the seat cushion (50) to adjust the rotational resistance;

The support base (90) is also provided with a flip locking mechanism, which acts with the backrest or the seat cushion (50) to lock in place.

2. A seat according to claim 1, characterized in that: the synchronous linkage mechanism comprises a seat-rest linkage swivel seat (67), the seat-rest linkage swivel seat (67) and the support base (90) The rear part of the seat is hinged, and the seat is rotated on the support base (90) around its hinge point;

The backrest is fixed on the seat-rest linkage swivel base (67), and the seat cushion (50) is hingedly connected with the backrest linkage swivel base (67);

The seat back linkage swivel (67) is connected with a seat cushion lift link (66), and one end of the seat cushion lift link (66) is hinged with the seat back linkage swivel (67), and the seat cushion The other end of the lift link (66) is hinged with the seat cushion (50).

3. The seat according to claim 1, wherein the damping adjustment mechanism comprises an elastic member (51) and a preload adjustment assembly (52), wherein the preload adjustment assembly (52) is fixed on the on the support base (90);

The elastic member (51) is connected with the seat-rest linkage swivel base (67) to provide rotational resistance to it;

The preload adjusting assembly (52) is connected with the elastic member (51) to adjust its preload.

4. A seat according to claim 1, characterized in that: the overturning locking mechanism comprises a controllable gas spring (42) and a locking support (41), wherein the locking support (41) is fixed on the on the support base (90);

One end of the controllable gas spring (42) is hinged with the support base (90), and the other end of the controllable gas spring (42) is hinged with the seat-rest linkage swivel (67).

5. The seat according to claim 2, characterized in that: the seat-back linkage swivel seat (67) comprises a linkage propulsion seat (671) and a linkage propulsion arm (672), and the linkage propulsion seat (671) ) is hinged with the support base (90), one end of the linkage propulsion arm (672) is connected with the linkage propulsion seat (671), and the other end of the linkage propulsion arm (672) protrudes forward, the linkage The front end of the push arm (672) is hinged with the seat cushion lifting link (66).

6 . The seat according to claim 2 , wherein a lifting restraint track is further provided on the support base ( 90 ), and the seat cushion lifting link ( 66 ) is linked with the seat back. 7 . The hinge point of the swivel base (67) is defined by the lifting constraint trajectory and moves according to the set constraint trajectory.

7. The seat according to claim 6, characterized in that: the support base (90) is provided with a catch slot, the catch slot is arranged along the lifting restraint track, and the seat cushion is lifted up The connecting rod (66) and the seat-rest linkage swivel (67) are hinged through a trajectory restraint shaft (65), and one end of the trajectory restraint shaft (65) is inserted into the clamping slot and extends along the Lift constraint trajectory movement.

8 . The seat according to claim 3 , wherein the preload adjusting assembly ( 52 ) comprises an elastic member restraining seat ( 521 ), and the elastic member restraining seat ( 521 ) is fixed on the support base. 9 . On (90), a strip-shaped constraining hole is provided on the elastic member constraining seat (521), the length direction of the strip-shaped constraining hole is arranged along the deformation direction of the elastic member (51), and the elastic member ( 51) Deformation is caused by the movement of the locking head along the strip-shaped constraint hole, and an elastic member pushing mechanism is also provided on the elastic member restraining seat (521), and the elastic member pushing mechanism acts on the elastic member (521). 51) and cause it to deform in the direction of the strip-shaped constraining hole.

9 . The seat according to claim 8 , wherein the elastic member pushing mechanism comprises a pushing cam ( 522 ), and the pushing cam ( 522 ) is installed on the elastic member through a cam shaft to constrain it. 10 . On the seat (521), the pushing cam (522) is disposed corresponding to the elastic member (51) and contacts with it;

A driven gear (523) is fixedly sleeved on the camshaft, a driving gear (524) is mounted on the support base (90), and the driving gear (524) meshes with the driven gear (523), The driving gear (524) is mounted on the support base (90) through a gear shaft, and a handle (525) is also fixed on the gear shaft.

10. A seat according to claim 7, characterized in that: the support base (90) comprises a shell bottom (91), and the edges of the shell bottom (91) are respectively folded upward to form shell flanges ( 92), the inner walls of the two opposite shell flanges (92) on the left and right are respectively hinged with the seat-back linkage swivel seat (67), and the seat-back linkage swivel seat (67) is respectively connected with the seat Pad lift link (66);

The elastic member (51) is connected with one of the seat-rest linkage swivel bases (67), and the preload adjustment assembly (52) is located in front of the corresponding seat-rest linkage swivel base (67); the controllable The gas spring (42) is hingedly connected with the other seat-rest linkage swivel base (67), and the locking support (41) is located in front of the corresponding seat-rest linkage swivel base (67);

The two seat-rest linkage swivels (67) facing right and left are connected by a lifting synchronizing rod (673).