CN218127701U

CN218127701U - Automatic backrest lifting seat

Info

Publication number: CN218127701U
Application number: CN202222443456.8U
Authority: CN
Inventors: 王恩; 李泽荣; 罗成; 严志强; 孟文平; 陶国蕊; 余天艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-27
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses an automatic back lift seat, including seat support, back, intermediate frame, heavy object, "Y" type shift fork, locking slider, locking shift fork, support column, back shaft. A second shaft is arranged at the front end of the middle frame and connected with an L-shaped support frame, and the L-shaped support frame is provided with a fixing screw hole to be fixed with the chair seat; a middle frame first sliding rail is arranged in the middle of the middle frame, a heavy object is arranged in the middle frame first sliding rail, a first shaft is arranged in the middle of the Y-shaped shifting fork, a locking sliding block is arranged at the bottom of the first shaft, and the first supporting column is placed in the inner shell; the back frame is characterized in that a middle frame second sliding rail is arranged at the rear end of the middle frame, a third shaft is mounted on the middle frame second sliding rail and connected with an L-shaped fixing frame, and the L-shaped fixing frame is provided with a fixing screw hole and fixed with the backrest. This automatic back lift seat adopts pure mechanical type gravity conversion form, guarantees chair security and practicality, and is convenient for accomodate.

Description

Automatic backrest lifting seat

Technical Field

The utility model belongs to the technical field of furniture articles for use and specifically relates to an automatic back lift seat.

Background

In the automatic lifting seat on the market at present, a lifting device realizes the lifting of the seat in a hydraulic, pneumatic and mechanical mode. The self-locking air spring is arranged inside the automatic lifting type seat, the advantage that the lifting can be adjusted can be achieved, however, when the chair is adjusted to ascend, the control pin needs to be lifted, the chair is lifted by utilizing hydraulic pressure or air pressure, and when the chair descends, the chair can be descended only by pressing the chair hard.

Although this type of chair can realize the lift of height, the lift process is more loaded down with trivial details, is difficult for accomodating, and hydraulic pressure and atmospheric pressure have with high costs, and the bearing is poor, and is required for the leakproofness higher, and the security is relatively poor, the problem that reuse rate is low. For example, due to the life limit of the pneumatic rod, the leakage of liquid and gas needs to be checked regularly, and certain defects and limitations are provided in the aspect of practical use.

SUMMERY OF THE UTILITY MODEL

In order to change the shortcoming that automatic rising seat adjusted the difficulty, improve the "automation" nature of automatic rising seat, the utility model provides a turn into the device of kinetic energy with gravitational potential energy. The backrest is lifted by the gravity of a person sitting down through a lever device in the center of the seat. After the backrest is lifted, the backrest can be always in a lifted state by using a heavy object, the locking sliding block and the locking shifting fork at the bottom of the side edge of the chair, and when the backrest needs to be put down, the backrest can be automatically put down only by resetting the locking sliding block and keeping in a reset state.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an utilize lever principle to realize device that seat back goes up and down, the device includes intermediate frame, the heavy object, "Y" type shift fork, the locking slider, the locking shift fork, the support column, the back shaft, the back descends when bearing the gravity that the people sat, drives two "L" type support frames front end downwards to it is downward to drive intermediate frame front end through the primary shaft, intermediate frame rear end is upwards, the secondary shaft through intermediate frame rear end moves in the slide rail and drives two "L" type mounts upward movement, thereby drive the back and rise, realize the automatic rising of chair back. Meanwhile, the heavy object in the middle frame slide rail moves forwards, and a force is applied to the L-shaped rod to pull the backrest shell. When the backrest shell needs to be put down, the locking shifting fork is slightly pushed, the heavy object moves to the rear end of the middle frame, and the backrest shell is automatically put down.

Preferably, the seat and the backrest are provided with a certain gap, the support column can support the seat and the backrest and ensure that the seat and the backrest do not deform under the action of gravity of a human body, and the seat and the backrest are in oblique line flat fit, so that a right trapezoid is integrally formed.

Preferably, the support columns adopt two structures shaped like Chinese character shan, and the total 6U-shaped support columns are connected with the base, so that the bearing capacity of the support part is increased.

Preferably, the front end L-shaped support frame is connected with the first shaft, the middle frame is connected with the second shaft, the support shaft is used as a fulcrum of the middle frame, the slide rail at the front end of the middle frame is connected with the heavy object, and the rear end of the middle frame is connected with the L-shaped fixing frame and is fixed with the seat.

Preferably, the heavy object moves back and forth on the first slide rail of the middle frame, and the lower part of the heavy object is matched with the upper end of the Y-shaped shifting fork; the lower half part of the Y-shaped shifting fork is connected with a locking sliding block, the locking sliding block is matched with the locking shifting fork, and the locking sliding block can move left and right in a locking shifting fork sliding rail; the middle of the Y-shaped shifting fork is connected with the first shaft, and the Y-shaped shifting fork can move back and forth by taking the first shaft as a rotating shaft, so that a heavy object is pushed to lock and reset the backrest.

The utility model has the advantages that the automatic backrest lifting chair adopts a full mechanical structure, and adds the lever principle into the lifting of the automatic backrest; the convenience and the security of effectual improvement seat, this utility model have added can satisfy most people's operation requirement behind the locking means that resets, especially can satisfy special crowds' needs such as old man child, are convenient for accomodate, have greatly increased its performance.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic illustration of a reset;

FIG. 2 is a schematic view of the backrest being raised;

FIG. 3 is an exploded view of the overall structure;

FIG. 4 is a schematic view of a gravity transformation structure;

in the figure, 1, a backrest, 2, an inner shell, 3, a seat, 4, a fixing screw hole, 5, a locking shifting fork, 6, a locking sliding block, 7, a first shaft, 8, a Y-shaped shifting fork, 9, a weight, 10, an intermediate frame, 11, a third shaft, 12, an L-shaped fixing frame, 13, a second shaft, 14, an L-shaped supporting frame, 15, an intermediate frame first sliding rail, 16, a supporting shaft, 17, a first supporting column, 18, an intermediate frame second sliding rail, 19, a second supporting column, 20, a third supporting column, 21, a base and 22 are reset holes.

Detailed Description

[ example 1 ]

As shown in fig. 3, the automatic backrest lifting seat of the present invention comprises a seat 3, a backrest 1, a middle frame 10, a weight 9, a "Y" shaped fork 8, a locking slider 6, a locking fork 5, a support column 17, and a support shaft 16; the front end of the middle frame 10 is provided with a second shaft 13, the second shaft 13 is connected with an L-shaped support frame 14, the L-shaped support frame 14 is provided with a fixing screw hole 4 and fixed with the chair seat 3, the middle frame 10 is provided with a middle frame first slide rail 15, a heavy object 9 is arranged in the middle frame first slide rail 15, a first shaft 7 is arranged in the middle of the Y-shaped shifting fork 8, the bottom of the first shaft 7 is provided with a locking slide block 6, and the first support column 17 is placed in the inner shell 2; the rear end of the middle frame 10 is provided with a middle frame second slide rail 18, the third shaft 11 is installed on the middle frame second slide rail 18, the third shaft 11 is connected with an L-shaped fixing frame 12, and the L-shaped fixing frame 12 is provided with a fixing screw hole 4 to be fixed with the backrest 1.

[ example 2 ]

Example of raising of backrest 1: as shown in fig. 2, the seat 3 is pushed by the downward gravity of a person to move the L-shaped support frame 14 downward, the front end of the middle frame (10) is provided with a second shaft (13), the second shaft (13) is connected with the L-shaped support frame (14), the weight 9 transmits the downward gravity to the L-shaped fixing frame 12 through a third shaft 11 under the action of the middle frame 10 and the L-shaped support frame 14, and the L-shaped fixing frame 12 supports the backrest 1, so that the function of automatically lifting the backrest is realized. The weight 9 does not play a practical role in this process.

[ example 3 ]

Example of locking when the backrest 1 is raised: when the backrest rises, the heavy object 9 is arranged at the front end of the first sliding rail 15 of the middle frame, when the locking shifting fork 5 is in a locking state, the Y-shaped shifting fork 8 is limited by the locking sliding block 6 to prevent the heavy object 9 from sliding and locking, and the L-shaped fixing frame 12 continuously supports the backrest 1 to keep the backrest 1 in a rising state.

[ example 4 ] A method for producing a polycarbonate

Backrest 1 reset example: as shown in fig. 1, when the locking fork 5 is in a locked state, the locking fork 5 is pushed to drive the locking slider 6 to slide, the Y-shaped fork 8 does not limit the weight 9, the weight 9 moves in the lower end of the first slide rail 15 of the middle frame, the weight 9 moves to the rear end under the pushing of the Y-shaped fork 8, and the backrest 1 is not limited and returns to the initial position under the gravity of the backrest. When the seat is reset, the locking shifting fork 5 is pushed to reset the backrest 1, so that the automatic reset of the seat is completed, and the operation is simple.

Claims

1. An automatic backrest lifting seat comprises a middle frame (10), wherein a second shaft (13) is arranged at the front end of the middle frame (10), the second shaft (13) is connected with an L-shaped support frame (14), and the L-shaped support frame (14) is provided with a fixing screw hole (4) to be fixed with a seat (3); the method is characterized in that: the middle frame (10) is provided with a middle frame first sliding rail (15), a heavy object (9) is arranged in the middle frame first sliding rail (15), a Y-shaped shifting fork (8) is arranged at the front end of the heavy object (9), a first shaft (7) is arranged in the middle of the Y-shaped shifting fork (8), a locking sliding block (6) is arranged at the bottom of the first shaft (7), the locking sliding block (6) is installed in the locking shifting fork (5), the locking shifting fork (5) and a first supporting column (17) are connected with a base (21), and the first supporting column (17) is placed in the inner shell (2); the back-rest chair is characterized in that a middle frame second sliding rail (18) is arranged at the rear end of the middle frame (10), a third shaft (11) is arranged in the middle frame second sliding rail (18), the third shaft (11) is connected with an L-shaped fixing frame (12), and the L-shaped fixing frame (12) is provided with a fixing screw hole (4) and is fixed with the back rest (1).

2. The automatic back lift seat of claim 1, wherein: the height of the first supporting column (17) is the same as that of the second supporting column (19) and used for supporting the chair seat (3), the third supporting column (20) is higher than the first supporting column (17) and the second supporting column (19), the third supporting column (20) is used for supporting the backrest (1), and the first supporting column (17), the second supporting column (19) and the third supporting column (20) are connected with the base (21).

3. The automatic back lift seat of claim 1, wherein: the side of the inner shell (2) right opposite to the locking shifting fork (5) is provided with a reset hole (22), and the seat (3) right opposite to the locking shifting fork (5) is provided with the reset hole (22) with the same size.

4. The automatic back lift seat of claim 1, wherein: the Y-shaped shifting fork (8) is positioned at the front end of the weight (9), and the lower end of the Y-shaped shifting fork (8) is provided with a locking sliding block (6).