CN112932143B

CN112932143B - A rollover damping adjustment device

Info

Publication number: CN112932143B
Application number: CN202110265518.8A
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: 2025-03-25
Anticipated expiration: 2041-03-11
Also published as: CN112932143A

Abstract

The present invention discloses a rollover damping adjustment device, comprising a support base and an elastic member, wherein a seat swivel is provided on the support base, the seat swivel is hinged to the support base, and the seat swivel rotates on the support base around its hinge point; a pre-tightening adjustment component is also provided on the support base, and the pre-tightening adjustment component is connected to the elastic member for adjusting the pre-tightening force of the elastic member; the elastic member is connected to the seat swivel to provide resistance when the seat swivel rotates. The significant effect of the present invention is that by setting the pre-tightening adjustment component, the elastic member providing the rollover resistance can be pre-tightened, so that the user can adjust the rollover resistance according to their own needs.

Description

Overturning damping adjusting device

Technical Field

The invention relates to a functional adjusting mechanism of a seat, in particular to a rotating resistance adjusting mechanism of a seat back and/or a seat cushion in the overturning process.

Background

Office chairs are important office appliances. Along with the increasing demand of office groups for the comfort of office chairs, office chairs gradually develop towards a multifunctional direction. At present, the multifunctional office chair mainly meets the following requirements besides meeting the requirements of people for sitting:

1. The seat backrest can be tilted, and the tilting angle can be adjusted and fixed 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 knees of passengers are lifted to different degrees;

3. when a passenger takes a rest, the seat can be provided with the leg support to support the legs, so that the comfort is improved.

To meet the above needs, engineers in the related art have some research results, and can individually meet the corresponding needs. However, due to the lack of overall arrangement, on one hand, the structure adopted by the prior art is not compact enough, on the other hand, after the functions are combined by adopting the prior art, the structure of the office chair is complex and heavy, the interference among the structures corresponding to the functions is serious, and the defects of heavy weight, poor attractiveness and the like exist. It is therefore necessary to re-orchestrate the implementation of individual requirements, integrating the functions. In the integration process, planning and designing are needed to be carried out again on various structural components and linkage relations.

In particular, in the prior art, in the process of rotating and adjusting the backrest, the seat pan/the seat cushion, the rotating resistance of the backrest, the seat pan/the seat cushion needs to be controlled so as to improve the rotating stability. In actual use, the factors such as the height and the weight of each user are different, so that the feeling of the user on the rotation resistance is different, the requirements on the rotation resistance are inconsistent, but the existing design can only provide fixed resistance.

Disclosure of Invention

In view of the above, the present invention provides a device that actively adjusts the rotational resistance during a seat back and/or seat cushion rollover. The technical scheme is as follows:

The turnover damping adjusting device is characterized by comprising a supporting base and an elastic piece, wherein a seat rotating seat is arranged on the supporting base and is hinged with the supporting base, and the seat rotating seat rotates on the supporting base around a hinge point of the seat rotating seat;

the support base is also provided with a pre-tightening adjusting component which is connected with the elastic piece and used for adjusting the pre-tightening force of the elastic piece;

the elastic piece is connected with the seat support swivel seat so as to provide resistance when the seat support swivel seat rotates.

Compared with the prior art, the invention has the beneficial effects that the elastic piece for providing the overturning resistance can be pre-tensioned by arranging the pre-tensioning adjusting component, so that a user can automatically adjust the overturning resistance according to the self requirement.

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 of X-X' of FIG. 3;

Fig. 5 is a schematic diagram showing the connection relationship among the lifting link 6, the linkage seat 7 and the seat cushion 8 in the first view;

fig. 6 is a schematic diagram showing the connection relationship of the lifting link 6, the linkage seat 7 and the seat cushion 8 in the second view.

Fig. 7 is a schematic diagram showing the correspondence between the pushing cam 22 and the elastic member 1.

Detailed Description

The invention is further described below with reference to examples and figures.

As shown in fig. 1-7, a turnover damping adjusting device comprises a supporting base 9 and an elastic piece 1, wherein a seat rotating seat 7 is arranged on the supporting base 9, the seat rotating seat 7 is hinged with the supporting base 9, and the seat rotating seat 7 rotates on the supporting base 9 around a hinge point thereof;

the support base 9 is also provided with a pre-tightening adjusting component 2, and the pre-tightening adjusting component 2 is connected with the elastic piece 1 and used for adjusting the pre-tightening force of the elastic piece 1;

the elastic piece 1 is hinged with the seat support swivel seat 7, so that the elastic piece 1 can perform self-adaptive rotation, and resistance is provided when the seat support swivel seat 7 rotates.

The pretension adjusting component 2 comprises an elastic piece restraining seat 21, the elastic piece restraining seat 21 is fixed on the supporting base 9, a strip-shaped restraining hole is formed in the elastic piece restraining seat 21, the length direction of the strip-shaped restraining hole is arranged along the deformation direction of the elastic piece 1, the elastic piece 1 moves along the strip-shaped restraining hole through a clamping head to deform, and an elastic piece pushing mechanism is further arranged on the elastic piece restraining seat 21 and acts on the elastic piece 1 to deform along the direction of the strip-shaped restraining hole.

The elastic piece pushing mechanism comprises a pushing cam 22, wherein the pushing cam 22 is arranged on the elastic piece restraining seat 21 through a cam shaft, the pushing cam 22 is arranged corresponding to the elastic piece 1 and is in contact with the elastic piece 1, a driven gear 23 is fixedly sleeved on the cam shaft, a driving gear 24 is arranged on the supporting base 9, the driving gear 24 is arranged on the supporting base 9 through a gear shaft, a handle 25 is fixed on the gear shaft, and the driving gear 24 is meshed with the driven gear 23.

The elastic piece 1 is a spring, the spring can be a spiral spring or a gas spring, one end of the spring is hinged with the seat rotating seat 7, the other end of the spring is fixed with the clamping head, the clamping head is slidingly assembled in the strip-shaped restraining hole, and the pushing cam 22 is propped against the clamping head.

The seat cushion 8 is further arranged on the supporting base 9, the rear portion of the seat cushion 8 is hinged to the supporting base 9, the seat cushion swivel seat 7 is connected with the lifting connecting rod 6, one end of the lifting connecting rod 6 is hinged to the seat cushion swivel seat 7, and the other end of the lifting connecting rod 6 is hinged to the seat cushion 8.

Specifically, the seat support swivel seat 7 comprises a linkage propulsion seat 71 and a linkage propulsion arm 72, the linkage propulsion seat 71 is hinged with the support base 9, one end of the linkage propulsion arm 72 is connected with the linkage propulsion seat 71, the other end of the linkage propulsion arm 72 extends forwards, and the front end of the linkage propulsion arm 72 is hinged with the lifting connecting rod 6.

In order to meet different adjustment requirements, a lifting constraint track is further arranged on the supporting base 9, and the hinge point of the lifting connecting rod 6 and the linkage propulsion arm 72 is limited by the lifting constraint track and moves according to the set constraint track.

The specific constraint track scheme can be that a track constraint vertical plate is arranged on the support base 9, a clamping groove is formed in the track constraint vertical plate, the lifting connecting rod 6 is hinged with the seat support swivel seat 7 through a track constraint shaft 5, and one end of the track constraint shaft 5 is inserted into the clamping groove and moves along the lifting constraint track.

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 is coincident with the hinge point of the linkage propulsion seat 71 and the support base 9, the linkage propulsion arm 72 and the linkage propulsion seat 71 may be hinged or fixed.

When the lifting constraint track is set arbitrarily instead of an arc, or the center of the arc does not coincide with the hinge point of the linkage propulsion base 71 and the support base 9, the linkage propulsion arm 72 and the linkage propulsion base 71 should be hinged.

The supporting base 9 comprises a shell bottom 91, 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 and left opposite to each other are respectively hinged with the seat support swivel seat 7, the seat support swivel seat 7 is respectively connected with the lifting connecting rod 6, the seat support swivel seat 7 on the two shell flanges 92 which are right and left opposite to each other is fixedly connected with the lifting synchronizing rod 73, two ends of the lifting synchronizing rod 73 are respectively fixedly connected with the corresponding linkage pushing seat 71, and the elastic piece 1 is hinged with any linkage pushing seat 71 of the seat support swivel seat 7.

The seat rotary seat 7 is also connected with a backrest component, and the lower part of the backrest component is fixedly connected with the seat rotary seat 7. Specifically, the backrest assembly includes a backrest body and a backrest connecting plate 4, each of the backrest swivel seats 7 is disposed on the outer side of the flange 92 of the housing, the backrest connecting plate 4 is fixedly connected with the hinge shaft of the backrest swivel seat 7, the backrest connecting plate 4 extends to the rear of the seat cushion 8 and is turned inwards to form a backrest fixing portion, backrest fixing holes are disposed on the backrest fixing portion, and the backrest connecting plates 4 on the left and right sides are connected with the same backrest body (not shown in the figure).

For adjusting the adjusted backrest and/or seat cushion 8, a controllable gas spring s is also provided, one end of the controllable gas spring s is hinged with the supporting base 9, and the other end of the controllable gas spring s is hinged with the seat backrest swivel seat 7. The controllable gas spring s is in the prior art, has a function of stopping at any position, is provided with an unlocking inhaul cable, and can be unlocked by arranging a handle or a buckle to operate the unlocking inhaul cable, so that the controllable gas spring s can automatically stretch and contract in an unlocking state, and cannot stretch and contract in a locking state.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A rollover damping adjustment device, characterized in that it comprises a support base (9) and an elastic member (1), the support base (9) is provided with a seat swivel seat (7), the seat swivel seat (7) is hinged to the support base (9), and the seat swivel seat (7) rotates on the support base (9) around its hinge point;

A preload adjustment component (2) is also provided on the support base (9), and the preload adjustment component (2) is connected to the elastic member (1) and is used to adjust the preload force of the elastic member (1);

The elastic member (1) is connected to the seat support rotating seat (7) to provide resistance when the seat support rotating seat (7) rotates;

The preload adjustment assembly (2) comprises an elastic member restraining seat (21), the elastic member restraining seat (21) being fixed on the supporting base (9), a strip restraining hole being provided on the elastic member restraining seat (21), the length direction of the strip restraining hole being arranged along the deformation direction of the elastic member (1), the elastic member (1) being deformed by the movement of the positioning head along the strip restraining hole, and an elastic member pushing mechanism being further provided on the elastic member restraining seat (21), the elastic member pushing mechanism acting on the elastic member (1) causing it to deform along the direction of the strip restraining hole;

The elastic member pushing mechanism comprises a pushing cam (22), the pushing cam (22) being mounted on the elastic member restraining seat (21) via a cam shaft, the pushing cam (22) being arranged corresponding to the elastic member (1) and in contact with the elastic member (1);

A driven gear (23) is fixedly sleeved on the camshaft, and a driving gear (24) is mounted on the support base (9), the driving gear (24) meshing with the driven gear (23);

The support base (9) is also provided with a seat cushion (8), the rear portion of the seat cushion (8) is hinged to the support base (9), the seat swivel seat (7) is connected to a lifting connecting rod (6), one end of the lifting connecting rod (6) is hinged to the seat swivel seat (7), and the other end of the lifting connecting rod (6) is hinged to the seat cushion (8);

The seat-supporting rotating seat (7) comprises a linkage propulsion seat (71) and a linkage propulsion arm (72), wherein the linkage propulsion seat (71) is hinged to the supporting base (9), one end of the linkage propulsion arm (72) is connected to the linkage propulsion seat (71), the other end of the linkage propulsion arm (72) extends forward, and the front end of the linkage propulsion arm (72) is hinged to the lifting connecting rod (6);

A lifting constraint track is also provided on the support base (9), and the hinge point between the lifting link (6) and the linkage propulsion arm (72) is limited by the lifting constraint track and moves according to the set constraint track;

The seat back swivel seat (7) is also connected to a backrest assembly, and the lower part of the backrest assembly is fixedly connected to the seat back swivel seat (7).

2. A rollover damping adjustment device according to claim 1, characterized in that the elastic member (1) is hinged to the seat support rotating seat (7) so that the elastic member (1) can perform adaptive rotation.

3. A rollover damping adjustment device according to claim 1 or 2, characterized in that: the elastic member (1) is a spring, one end of the spring is hinged to the seat support swivel seat (7), the other end of the spring is fixed with the locking head, the locking head is slidably assembled in the strip constraint hole, and the push cam (22) is in abutment with the locking head.

4. A rollover damping adjustment device according to claim 1 or 2, characterized in that: the driving gear (24) is mounted on the supporting base (9) via a gear shaft, and a handle (25) is fixed on the gear shaft.