TWM506536U - Interlocking reclining device between chair back and seat cushion of office chair - Google Patents

Description

Linkage tilting device between office chair back and seat cushion

The present invention relates to a seat cushion linkage device for reclining an office chair backrest, through which the seat back is tilted to drive the seat cushion to be slightly displaced forward, and at the same time, the rear side of the seat cushion is slightly lowered, so that the occupant not only has the center of gravity of the occupant Move forward and stay more stable, and make the force of the backward tilting movement more labor-saving, and also make the back and forth tilting action to form a rocking action like a rocking chair.

According to the general, when the chair is in a ride, most of the back of the chair can be elastically leaned and leaned, and the chair of the existing chair back can be tilted, when the occupant is on the seat cushion and leans against the back of the chair. When the back is reclining back, the back of the chair together with the seat cushion will produce a backward tilting motion, and when the seat cushion is turned backwards, the center of gravity of the occupant is likely to move backward, thereby causing an instantaneous backward tilting motion, and the occupant The illusion of losing the center of gravity causes the occupant to be scared and has the reflexive action of lifting the leg, which in turn makes the center of gravity worse, causing the dangerous situation of falling from the chair.

In addition, when the occupant is lying back, the feet are usually supported by the ground and slightly applied, and the body is tilted back, and the waist is also slightly forced, so that the multiple actions are performed at the same time, so that the occupant must be more It is laborious to move backwards smoothly.

Secondly, if the occupant wants to relax and perform the back and forth tilting motion, The entire riding position can only be swung back and forth with one fulcrum, resulting in the occupant's entire body, only monotonous back and forth swing, the comfort is not enough.

The reason is that in order to improve the above-mentioned known office chair, when leaning backwards on the ride, there may be a problem that the center of gravity loses the sense of restlessness, the back force is relatively labor-intensive, and the ride portion swings monotonously. The linkage device between the seat cushion and the seat back is pivotally fixed to the base through the front upper end of the seat back support coupled to the back of the seat, and the upper end is respectively disposed at the front lower end of the base and the middle of the seat back support The front and rear connecting members are pivoted to the front and rear of the back of the seat cushion, and the front lower end of the seat back support is provided with a shaft extending into the base, and a spring force pushing pushing unit of the shaft is arranged in the base And the anchor member is pivotally connected between the front piece and the shaft, so that when the seat back is tilted backward, the seat cushion will move forward slightly, and the rear end thereof will be slightly lowered downward, thereby causing the occupant to move forward and increase It is stable and safe when you lie on your back, and it also makes it easier to apply when you are lying on your back, and the whole ride has the comfort of swinging back and forth.

The technical solution adopted by the present invention to solve the technical problem is that the upper end of the rear side of a base is pivoted together with the front upper end of the seat back support having a seat back joint at the rear end thereof, and the back support of the seat back The front lower end of the seat is fixed by a shaft extending from the base, and a resilient pushing unit for pushing the elastic force of the shaft is arranged in the base, and the lower ends of the two opposite front members are fixed to the front lower end of the base. On both sides, then the two ends of the two relative linkages are respectively fixed between the two middle joints and the two sides of the shaft, and the upper middle ends of the seat back supports are pivoted at the upper middle end The two opposite connecting members, and the upper ends of the two front connecting members and the two rear connecting members are respectively fixed to the front and rear of the back surface of the seat cushion.

The utility model has the beneficial effects that the linkage between the backrest and the seat cushion allows the backrest of the seat cushion to be moved forward and backward when the seat back is tilted, so that the occupant can apply more force to the back. It's easy and the center of gravity moves forward, making the reclining more peaceful, safe and comfortable.

1‧‧‧Base

11‧‧‧ rear guide slot

12‧‧‧ Leading slot

2‧‧‧Front back support

21‧‧‧Front back joint

3‧‧‧Cushion

31‧‧‧ Front pivot seat

32‧‧‧ Rear pivot seat

4‧‧‧Back of the chair

5‧‧‧Strength push unit

51‧‧‧Top seat

61,62,63‧‧‧ shaft

71‧‧‧ Front piece

72‧‧‧After attachment

8‧‧‧ linkages

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a perspective view of the present invention.

2 is a perspective exploded view of the present invention.

Figure 3 is a side cross-sectional view of the present invention.

Figure 4 is a schematic illustration of the tilting actuation of the present invention.

Referring to FIG. 1 to FIG. 3, the present invention is a base 1 for mounting a leg and a seating portion having a seat cushion 3 and a seat back 4, and the upper end of the rear side of the base 1 is passed through a shaft 63. The front side upper end of the seat back support 2 is pivotally coupled, and the rear end of the seat back support 2 is provided with a seat back joint portion 21 for fixedly connecting the lower end of the seat back 4, and at the same time, the seat back support 2 is The front lower shaft passes through the other shaft 61, and the shaft 61 is inserted into the base 1. At the same time, the base 1 provides a rear guide slot 11 for the penetration of the shaft 61, so that the shaft 61 can follow the rear guide. The slot 12 is moved and the angle at which it is moved is limited. The upper end of the seat back support 2 is pivoted with two opposite rear connecting members 72 so that the upper end of the rear connecting member 72 can be slightly opposite the back of the seat cushion 3. The rear pivot seats 32 secured at the rear side are pivotally joined together.

Moreover, a spring pushing unit 5 is disposed in the front of the base 1 so that the rear end of the elastic pushing unit 5 is provided with a top abutting seat 51 which is pushed by the spring outwardly, and the top abutting seat 51 is abutted. Relying at the middle of the aforementioned shaft 61, the seat back support 2 is swayed by the shaft 63 as a fulcrum.

In addition, the lower ends of the two opposite front connectors 71 are pivotally fixed to the lower sides of the front end of the base 1, and the front ends of the two opposite linking members 8 are respectively transmitted through the shaft 62 and the two corresponding front connecting members 71. The middle portion is pivotally coupled together, and the two linkage members 8 are disposed on two sides of the inner side of the base 1, and the shaft 62 is passed through the front guide slot 12 formed in the base 1, and then combined with the front connector 71. The upper ends of the two front joints 71 are fixed to the front pivot seat 31 fixed at the front side of the back surface of the seat cushion, and the rear ends of the two link members 8 are pivotally fixed at the front lower end of the seat back support 2 On the shaft 61.

Therefore, as shown in FIGS. 3 and 4, when the occupant rides on the seat cushion of the office chair and leans back against the seat back 4, if the body is tilted backward, the seat back 4 will tilt backwards. That is, the rear end of the seat back support 2 is swung downward and settles, so that the two rear connecting members 72 on the lower side of the seat cushion 3 are displaced downward, and the seat cushion 3 is pressed downward by the occupant's weight. The force acting, the shaft 61 which is disposed at the front lower end of the downwardly swinging seat back support 2, causes the two linkage members 8 to move forward, and then the two front connecting members 71 pivotally connected to the front end of the two linkage members 8 are turned forward. Turning, the seat cushion 3 produces an action of shifting forward.

At the same time, the elastic pushing unit 5 also elastically reverses the shaft 61, so that the seat back 4 has a resilient swinging effect, so that the occupant leans back and feels more comfortable, and even rides. When the front and rear swings, the seat cushion 3 moves forward and backward and tilts forward and backward, so that the occupant riding on the office chair can feel the rocking and swinging motion like a rocking chair, making the swinging The comfort is improved, making the occupant's body easier to relax and get a rest.

In addition, when the occupant leans back and wants to lie on his back, the forward movement of the seat cushion 3 causes the occupant's center of gravity to move forward slightly, so that the backward movement is moderated, and the occupant suddenly loses the center of gravity. The sense of imbalance can also increase the rider's flatness when leaning back, ensuring the safety of the ride.

In addition, when the occupant leans back, the rear side of the seat cushion 3 is slightly rearward due to settlement. The slanting shape allows the occupant's buttocks to be blocked by the support without causing the forward sliding motion, and the urging force of the leg assisted reclining can be reduced, thereby making the occupant's reclining movement easier and less laborious.

1‧‧‧Base

11‧‧‧ rear guide slot

12‧‧‧ Leading slot

2‧‧‧Front back support

21‧‧‧Front back joint

31‧‧‧ Front pivot seat

32‧‧‧ Rear pivot seat

5‧‧‧Strength push unit

51‧‧‧Top seat

61,62,63‧‧‧ shaft

71‧‧‧ Front piece

72‧‧‧After attachment

8‧‧‧ linkages

Claims (1)

An interlocking reclining device between an office chair back and a seat cushion is pivoted together with a front upper end of a seat back support having a back joint at a rear end of a base, and the chair is The front lower end of the back support is fixed by a shaft extending in the base, and a resilient pushing unit for pushing the elastic force of the shaft is arranged in the base, and the lower ends of the two opposite front members are fixed to the base. Both sides of the front lower end, and then two ends of the two relative linking members are respectively fixed between the two middle portions of the front connecting piece and the two sides of the shaft, and the upper middle end of the two sides of the seat back support The two rear connecting members are pivoted, and the upper ends of the two front connecting members and the two rear connecting members are respectively fixed to the front and rear of the back surface of the seat cushion.