CN204743289U - Cushion interlocking device for tilting back of office chair - Google Patents

Abstract

The utility model discloses a cushion interlock device that the office chair back of the chair inclines and faces upward, it is that the preceding upper end of base that links chair sitting part and chair foot is together with the front end pivot of a back of the chair frame seat that its rear end is linked with the back of the chair, and make back of the chair frame seat front end middle department set firmly one receive the base in the elasticity unit of installing back of the chair frame seat pull back the power seat portion that pulls, and make the pivot of the preceding lower extreme both sides of base firm two relative front links, wear to establish a its both ends in the slot hole of establishing in the middle of two front links simultaneously in the middle of the power seat portion of returning, two relative back links are fixed in the pivot of back of the chair frame seat portion later both sides department, and then make the upper end of two front links and two back links, pivot respectively around the cushion back of sitting part, so when the person leans on back and makes the back of the chair incline and face upward, see through the effort that the cushion received weight oppresses downwards, and the back of the chair swings the action, let produce the forward and the focus that improves and increase the person, The force of leaning backwards is saved, and the back and forth swing of the sitting part is more comfortable.

Description

Cushion interlocking device for tilting back of office chair

technical field

The utility model relates to a seat cushion interlocking device when the back of the office chair is tilted. Through the device, the back of the chair is tilted to drive the seat cushion to move slightly forward, and at the same time, the rear side of the seat cushion is slightly lowered to be slightly backward tilted. shape, which not only allows the occupant's center of gravity to move forward and remain stable, but also makes the movement of leaning backward more labor-saving, and at the same time makes the reclining back and forth form a comfortable rocking effect like a rocking chair.

Background technique

Most of the chair backs can be elastically leaned and reclined when the general chair is seated, and the existing chair back can be tilted and moved, which means that when the occupant is located on the cushion, the back of the chair is leaned against the back of the chair. When lying back, the back of the chair and the seat cushion will roll back together, and when the seat cushion is turned backward, it is easy to cause the center of gravity of the occupant's entire body to move backward, resulting in an instant backward roll action , so that the occupant has the illusion of losing the center of gravity, causing the occupant to be frightened and want to get up and lift his legs, which in turn makes his center of gravity unstable, which in turn causes the dangerous situation of falling from the seat.

In addition, when the occupant is lying on his back, his feet are usually supported by the ground and exerts a little force. In addition to the body's backward movement, the waist also needs to be slightly exerted. So many actions are performed at the same time, so the occupant must be more careful. It takes a lot of effort to move backwards smoothly.

Secondly, if the occupant wants to relax the body and tilt back and forth, the entire seating part can only swing back and forth with one fulcrum, resulting in the entire body of the occupant only being able to swing monotonously back and forth, which is not comfortable enough.

Utility model content

The reason is that in order to improve the above-mentioned known office chairs when the occupant leans back, the unsteady feeling of losing the center of gravity may suddenly occur, the force of leaning back is relatively labor-intensive, and the seat part swings back and forth monotonously, etc., the utility model That is to provide a linkage device between the seat cushion and the back of the chair, which is pivotally fixed at the front upper end of a base through the front end of the back frame linking the seat back, and at the front lower end of the base and the slightly between the seat back frame At the rear end, there are respectively pivoted front and rear connectors whose upper ends are fixed to the front and rear of the back of the seat cushion. At the same time, a rebound seat part is fixed in the middle of the front end of the seat back frame and is pulled back by elastic force. Wear an actuating rod whose two ends are engaged in the resisting slots provided on the two front connecting parts, so that when the back of the chair is tilted backward, the seat cushion will move forward slightly while its rear end will move slightly toward the back of the chair. The lower subsidence allows the center of gravity of the occupant to move forward to make the center of gravity of the supine body more stable and safe, and makes it easier to apply force when lying on the back, and improves the comfort of the seat part swinging back and forth.

The technical solution adopted by the utility model to solve its technical problems is: set a front end pivotally fixed at the front upper end of a base with an elastic unit inside, and a chair back connection for connecting the back of the chair is provided at the rear end The chair back frame seat at the bottom, and the two opposite rear connecting pieces are pivoted on both sides of the rear end of the chair back frame seat, and then the front end of the chair back frame seat is fixed in the middle of a spring pull back by the elastic unit, and its middle side A pull-back seat of the actuating rod is installed; the lower ends of the two front connecting parts are pivotally fixed on both sides of the front lower end of the base, and the middle part of the two front connecting parts is provided with a support for the two ends of the actuating rod to pass through. Fitted against the slotted holes, and then the upper ends of the two front connecting pieces and the two rear connecting pieces are pivotally fixed at the front and back of the seat cushion.

In the above solution, the two ends of the actuating rod that pass through the side of the return force seat are provided with guide slot holes at the corresponding positions of the base for passing through and limiting the displacement angle thereof.

In the above solution, the elastic unit is provided with an elastic pull rod that elastically pulls back the return seat, which is inserted into the elastic unit after being locked by the front side of the return seat through the pivot.

In the above-mentioned solution, a plurality of positioning holes are provided on the side of the pull-back seat, and a positioning column that can be manipulated to move forward and backward in any positioning hole is installed on the corresponding base.

The beneficial effect of the utility model is that, when the seat back is tilted and swings, the rear of the seat cushion can be driven by the above-mentioned pivotally fixed base and the front and rear connecting parts pivotally arranged on the chair back frame seat to connect the seat cushion. The end is slightly lowered and the front end is moved forward, so that the seat cushion is slightly tilted backward to avoid the sliding of the occupant's buttocks, save the force of leaning back and double the comfort of swinging back and forth, and also move the body's center of gravity forward when leaning back And achieve a more stable and safe effect.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a three-dimensional exploded schematic diagram of the utility model.

Fig. 3 is a schematic cross-sectional view of the utility model.

Fig. 4 is a schematic diagram of linkage between the chair back and the seat cushion of the present invention.

In the figure: 1. Base, 11. Guide slot hole, 12. Positioning column, 13. Shaft rod, 2. Chair back frame,

21. Chair back link, 22. Pull back seat, 221. Positioning hole, 23. Actuating lever, 3. Pivot seat,

31. Front pivot, 32. Rear pivot, 33, 34. Shaft, 4. Elastic unit, 41. Elastic tie rod,

5. front connecting piece, 51. resisting slot, 6. rear connecting piece, 7. chair back, 8. cushion.

Detailed ways

Please refer to Fig. 1 to Fig. 3, the utility model is a device that makes the cushion and the back of the chair form a linkage, and its structure is to include the base 1, which is provided with a The seating portion and the lower end of the seat cushion 8 and the chair back 7 can be connected with the chair feet, and a chair back frame 2 with a chair back connecting portion 21 for connecting with the chair back 7 is provided at its rear end, and the chair back frame The front end of 2 is pivotally fixed at the front upper end of base 1, and the upper end of a pullback seat 22 is fixed at the slightly middle of the front end of the chair back frame 2 at the same time, and the side of the pullback seat 22 is provided with multiple The positioning hole 221 is simultaneously pierced with an actuating rod 23 in the middle of the return seat portion 22 .

In addition, an elastic force unit 4 is arranged in the base 1, and the elastic force unit 4 is provided with an elastic force pull rod 41 that is pushed back by the spring force to generate a pull-back effect. Threaded in the elastic unit 4, the recoil seat portion 22 and the seat back frame 2 have the tendency to swing upward, that is to say, the seat back frame 2 has the function of swinging back and forth with elastic force.

Also, the two ends of the actuating rod 23 that pass sideways in the middle of the aforementioned pull-back seat portion 22 are inserted into the guide groove holes 11 provided at the corresponding positions on both sides of the base 1, so as to limit the swing angle of the seat back frame 2. ; The lower ends of the two opposite front connecting parts 5 are re-set, respectively pivoted on both sides of the front lower end of the base 1 through the two shaft rods 13, and at the same time, the two ends of the actuating rod 23 are respectively pierced and fitted on the two front connecting parts 5 in the abutment slot 51 slightly in the middle, and at the same time, two opposite rear connecting pieces 6 are pivotally fixed at the later two sides in the middle of the seat back frame 2, so that the two front connecting pieces 5 and the two rear connecting pieces 6 The upper end is pivoted to the front pivotal part 31 and the rear pivotal part 32 at the front and rear of the pivot seat 3 fixed on the back of the seat cushion 8 through the shaft rods 33 and 34, so that the seat cushion 8 passes through the front and rear connecting parts. 5, 6 are mounted on the top of the base 1.

Secondly, on the base 1 corresponding to the positioning hole 221 provided on the pull-back seat portion 22 of the aforementioned chair back frame 1, a positioning column 12 that can be manipulated to move forward and backward is installed, so that the positioning column 12 can penetrate into the In the positioning holes 221 at different places, when the reclining seat 22 and the seat back frame 2 can swing to different angles, they are positioned and do not move, that is, the seat back 7 can be adjusted to different leaning angles.

Therefore, please refer to Fig. 3, shown in Fig. 4, when the aforementioned positioning post 12 withdraws from the positioning hole 221, the occupant sitting on the office chair can move backwards, allowing the seat back 7 to tilt backward and force The rear end of the seat back frame 2 swings downwards, and at this moment, the rear connecting piece 6 can pull the rear side of the seat cushion 8 to settle down, and when the rear end of the seat back frame 2 swings downwards, the pull-back seat portion of its front end will 22 will also rotate in the same direction thereupon to make the actuating rod 23 swing forward, and then through the two ends of the actuating rod 23, the two front connecting parts 5 will be pushed against, so that the two front connecting parts 5 will move forward. Swing, let the seat cushion 8 be driven to move forward, that is, when the seat back 7 is tilted backward, the rear end of the seat cushion 8 will be allowed to settle down and move forward; When the seat cushion 8 moves forward, the center of gravity of the entire body of the occupant moves slightly forward and backward, so that the movement of leaning back is relatively gentle, and avoids the unbalanced feeling of the occupant suddenly losing the center of gravity. The stability when leaning back ensures the safety of riding.

Moreover, when the occupant leans back, the rear end of the seat cushion 8 settles and forms a slightly backward leaning shape, so that the occupant's buttocks are supported and blocked, which not only prevents the occupant's buttocks from sliding forward on the seat cushion 8, but also reduces the The legs assist in applying force when leaning back, making it easier and less labor-intensive for the occupant to lean back and apply force.

Secondly, when the occupant sits on the seat and rocks back and forth, in addition to the back and forth swing of the seat back 7, the seat cushion 8 also moves back and forth and tilts backward, allowing the occupant to sit on the office chair The occupant can feel that it is as comfortable as riding on a rocking chair, which makes it easier for the occupant's body to relax and get a rest.

Claims (4)

1. the cushion linkage of an office chair back reclining, it is characterized in that: and establish its front end pivot solid before one is provided with the base of elastic force unit in it upper end its rear end be provided with the chair back stand of the chair back linking part combined for the chair back, and chair back stand hold after a while both sides pivots intrinsic relatively two after connect part, set firmly one simultaneously in middle, chair back stand front end and to pull back by aforementioned elastic force unit elastic force and its side wears go back to power seat portion of an operating bar; The lower end pivot connecting part before establishing relative two is again solid in the both sides of the front lower end of base, and and the middle connecting part before two be provided with to make operating bar two ends penetrate supporting supporting of closing and close slotted eye, and then make again connect part and two before two after connect the upper end pivot of part admittedly at the front and back place at the cushion back side.

2. the cushion linkage of office chair back reclining according to claim 1, is characterized in that: return the base position that this operating bar two ends of wearing, side, power seat portion are corresponding, offering the guiding groove hole of limit operating bar displacement angle of limiting.

3. the cushion linkage of office chair back reclining according to claim 1, is characterized in that: this elastic force unit is established one have elastic force pull bar that elastic force pulls back, its be by return fasten through pivot on front side of power seat portion after load in elastic force unit.

4. the cushion linkage of office chair back reclining according to claim 1, it is characterized in that: the side in this time power seat portion is provided with multiple locating hole, and installing one can be manipulated and flexible locating dowel of retreating on arbitrary locating hole on the base of locating hole corresponding position.