CN219331136U - Force adjusting mechanism and chair with chair back tilting force adjusting function - Google Patents

Abstract

The utility model relates to the technical field of seats, in particular to a force adjusting mechanism and a seat with a chair back tilting force adjusting function, wherein the force adjusting mechanism comprises a spring, a first driving piece, a second driving piece and a screw rod; the first driving piece is arranged on the screw rod, the spring is connected with the second driving piece, the first driving piece is in sliding connection with the second driving piece, and the first driving piece can drive the second driving piece to push against the spring so that the spring deforms on the shaft of the spring; the seat chassis comprises a chassis main body, a seat mounting plate, a seat back and the force adjusting mechanism, wherein the sliding rod and the force adjusting mechanism are arranged in the chassis main body, the force adjusting mechanism comprises a first driving piece, a second driving piece, a screw rod and a spring, the spring is positioned between the sliding rod and the second driving piece, the rotation of the screw rod drives the second driving piece to push the spring to enable the spring force to change, and the sliding rod is connected with the seat back through the seat mounting plate, so that the adjustment of the tilting force of the seat back is realized, the mechanism is simple, and the use of transmission parts is reduced.

Description

Force adjusting mechanism and chair with chair back tilting force adjusting function

Technical Field

The utility model relates to the technical field of seats, in particular to a force adjusting mechanism and a seat with a chair back tilting force adjusting function.

Background

Seat pans, also known as seat trays, are an important component that fits under the seat base of a seat. The lifting of the chair and the adjustment and locking of the tilting angle of the chair back are completed by the chassis. In a common seat, an adjusting mechanism is arranged in a chassis to adjust the tilting force of the chair back so as to adapt to the requirements of different users on the tilting force. But the existing adjusting mechanism needs more transmission parts and has a complex structure.

The utility model discloses a tilting force adjustment chassis and base, including the drain pan, the drain pan rotates and is provided with the back of the chair frame, be provided with the elastic plate between drain pan and the back of the chair frame, be connected with the elastic component between seat frame middle part and the drain pan, seat frame bottom is provided with the drive plate, the drive plate is provided with the drive rack, slide in the drain pan and be provided with the regulating block, regulating block and elastic plate bottom butt, the regulating block is provided with driven rack, be provided with gear assembly between driven rack and the drive rack, make seat frame downward movement through human gravity, the drive rack passes through gear assembly meshing transmission, drive driven rack slides, drive the regulating block and remove, adjust the position of regulating plate and elastic plate butt, thereby adjust the holding power of elastic plate to back of the chair frame, when the user plays, under the effect of elastic component, the seat frame drives back of the chair frame and resets in step, realize according to the tilting force of user's weight automatically regulated back of the chair.

As another example, a seat chassis with a back leaning force adjusting device disclosed in patent document with publication number CN213605393U, wherein the leaning force adjusting devices are respectively arranged at two sides of a supporting shaft seat in a bottom shell, one end of the leaning force adjusting device is in running fit with a sliding shaft, the other end of the leaning force adjusting device is hinged with a hinging seat through a transmission shaft, and the hinging seat is in running fit with a guide shaft; the transmission mechanism is matched with the pin joint frame plate and the guide shaft, the transmission mechanism drives the transmission shaft, and the driving mechanism drives the transmission mechanism. The two tilting force adjusting devices are respectively arranged at two sides in the bottom shell to avoid the supporting shaft seat, and the telescopic travel of the corresponding tilting force adjusting devices is increased, so that the back tilting force is adjusted.

The adjusting device of the technology has more transmission parts and more complex structure.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to: a force adjusting mechanism and a chair with a chair back tilting force adjusting function are provided.

The utility model adopts the technical scheme that:

a force adjusting mechanism comprises a spring, a first driving piece, a second driving piece and a screw rod; the first driving piece is arranged on the screw rod, and the screw rod can drive the first driving piece to move forwards and backwards; one end of the spring is connected with the second driving piece, the other end of the spring is fixedly arranged on a fixed object arranged outside, the first driving piece is in sliding connection with the second driving piece, and the first driving piece can drive the second driving piece to push the spring to enable the spring to deform in the axial direction of the spring. According to the utility model, the first driving piece is arranged on the screw rod, the first driving piece is in sliding connection with the second driving piece, the first driving piece and the second driving piece are driven to mutually slide by the rotation of the screw rod, the spring is pressed by the second driving piece, and the spring is deformed in the axial direction, so that the rotary motion of the screw rod is converted into the potential energy of the spring, the spring elastic force adjusting function is met, the mechanism is simple, and the use of transmission parts is reduced.

As a further improvement of the technical scheme, the first driving piece is provided with a first inclined plane, the second driving piece is provided with a second inclined plane, and the first inclined plane is jointed with the second inclined plane and can mutually slide. Through setting up the inclined plane, first driving piece back and forth movement on the lead screw, then through the slip of inclined plane, with the back and forth movement of first driving piece change second driving piece into and move about, the second driving piece removes the roof pressure spring again.

As a further improvement of the technical scheme, the device further comprises a motor, wherein the motor is electrically connected with the screw rod. Compared with manual adjustment, the motor is utilized to drive more conveniently.

The chair with the chair back tilting force adjustment comprises a chassis main body, a chair seat mounting plate, a chair back and the force adjustment mechanism, wherein the chair seat mounting plate is mounted above the chassis main body, the chair back is hinged with the chair seat mounting plate, the chair back is hinged with the chassis main body, the force adjustment mechanism is mounted in the chassis main body, a sliding rod is slidably mounted in the chassis main body, the spring is positioned between the sliding rod and the second driving piece, and the sliding rod can slide in the elastic direction of the spring; the seat mounting plate is fixedly connected or hinged with the sliding rod; the chair back can drive when leaning upward the seat support mounting panel removes, and the removal of seat support mounting panel can drive the slide bar slides thereby compress the spring. According to the utility model, the sliding rod and the force adjusting mechanism are arranged in the chassis main body, the spring on the force adjusting mechanism is positioned between the sliding rod and the second driving piece, the second driving piece is driven by the rotation of the screw rod to push the spring to change the elasticity of the spring, and the sliding rod is connected with the chair back through the chair seat mounting plate, so that the adjustment of the tilting force of the chair back is realized, the mechanism is simple, and the use of transmission parts is reduced.

As a further improvement of the technical scheme, the device further comprises a limiting frame, and the first driving piece and the second driving piece are installed in the limiting frame. Limiting the distance the first driving member moves back and forth and preventing the second driving member from shifting.

As a further improvement of the technical scheme, sliding grooves are formed in the front-back direction of the inner side of the chassis main body, two ends of the sliding rod are inserted into the sliding grooves, and the sliding rod can slide in the sliding grooves. The sliding direction and the sliding distance of the sliding rod are limited by arranging the sliding groove.

As a further improvement of the technical scheme, an oil-gas rod is arranged between the sliding rod and the second driving piece. The oil gas rod is arranged between the slide rod and the second driving piece, so that the tilting amplitude is more gentle, and the comfort is improved.

The beneficial effects of the utility model are as follows:

1. according to the force adjusting mechanism disclosed by the utility model, the first driving piece is arranged on the screw rod and is in sliding connection with the second driving piece, the first driving piece and the second driving piece are driven to mutually slide by the rotation of the screw rod, the spring is pressed by the second driving piece, and the spring is deformed in the axial direction of the spring, so that the rotary motion of the screw rod is converted into the potential energy of the spring, the elastic force adjusting function of the spring is met, the mechanism is simple and easy, and the use of transmission parts is reduced.

2. According to the seat disclosed by the utility model, the sliding rod and the force adjusting mechanism are arranged in the chassis main body, the force adjusting mechanism comprises the first driving piece, the second driving piece, the screw rod and the spring, the spring is positioned between the sliding rod and the second driving piece, the second driving piece is driven by the rotation of the screw rod to push the spring to change the elasticity of the spring, and the sliding rod is connected with the chair back through the chair seat mounting plate, so that the adjustment of the tilting force of the chair back is realized, the mechanism is simple, and the use of transmission parts is reduced.

Drawings

The utility model is further illustrated by the following description and examples of the embodiments in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of a force adjusting mechanism according to the present utility model;

FIG. 2 is a schematic view of the structure of the seat of the present utility model;

FIG. 3 is a schematic view of a portion of the structure of a seat according to the present utility model;

FIG. 4 is a schematic view of a first driving member according to the present utility model;

FIG. 5 is a schematic diagram of a second driving member according to the present utility model;

FIG. 6 is a schematic view of a spring in a maximum compression state;

FIG. 7 is a schematic view of a spring in a minimum compression state;

FIG. 8 is a schematic diagram of the transmission process of the internal structure of the chassis main body before and after the chair back tilts;

in the figure: 1-a spring, 2-a first driving piece, 3-a second driving piece, 4-a screw rod, 21-a first inclined plane, 31-a second inclined plane, 5-a motor, 6-a chassis main body, 7-seat mounting plate, 8-chair back, 61-slide bar, 9-limit frame, 62-chute, 210-bump, 310-chute and 10-oil gas rod.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 8, a chair with chair back tilting force adjustment comprises a chassis main body 6, a chair seat mounting plate 7, a chair back 8 and a force adjustment mechanism, wherein the chair seat mounting plate 7 is mounted above the chassis main body 6, the chair back 8 is hinged with the chair seat mounting plate 7, and the chair back 8 is hinged with the chassis main body 6.

Referring to fig. 2 and 3, and fig. 6 and 7, a slide bar 61 is installed in the chassis main body 6, two slide grooves 62 are provided in the front-rear direction of the inner side of the chassis main body 6, the two slide grooves 62 are symmetrical to each other, two end portions of the slide bar 61 are inserted into the slide grooves 62, the slide bar 61 can slide on the slide grooves 62, and the sliding distance of the slide bar 61 is limited by the opening length of the slide groove 62.

The force adjusting mechanism is arranged in the chassis main body 6, and referring to fig. 1, the force adjusting mechanism comprises a spring 1, a first driving piece 2, a second driving piece 3, a screw rod 4 and a motor 5, the spring 1 is positioned between a slide rod 61 and the second driving piece 3, the spring 1 is perpendicular to the screw rod 4, the screw rod 4 is electrically connected with the motor 5, and the motor 5 can drive the screw rod 4 to rotate; an internal thread is arranged in the first driving piece 2, an external thread is arranged on the screw rod 4, the first driving piece 2 is in threaded connection with the screw rod 4, and the screw rod 4 rotates to drive the first driving piece 2 to move back and forth in the length direction of the screw rod 4; the first driving piece 2 is provided with a first inclined plane 21, the second driving piece 3 is provided with a second inclined plane 31, the first inclined plane 21 is jointed with the second inclined plane 31 and can mutually slide, and the front-back movement of the first driving piece 2 is converted into the left-right sliding of the second driving piece 3; the chassis main body 6 is V-shaped (left end is tilted upward).

An oil-gas rod 10 is also arranged between the sliding rod 61 and the second driving piece 3, and the oil-gas rod 10 is positioned inside the spring.

Referring to fig. 4 and 5, the first inclined surface 21 is provided with a protruding block 210, the second inclined surface 31 is provided with a chute 310, and the protruding block 210 is inserted into the chute 310; the second driving member 3 is capable of moving up and down in the inclined direction of the chute 310 during the left and right sliding; the motor 5 drives the screw rod 4 to rotate, and the rotation of the screw rod 4 drives the first driving piece 2 to move forwards and backwards; the first driving member 2 drives the second driving member 3 to move along the arrangement direction of the spring 1, so that the spring 1 is displaced in the elastic force direction, and the elastic force of the spring 1 is regulated.

As shown in fig. 8 (the broken line is a schematic diagram of a state of tilting back), when the chair back 8 tilts, the chair back 8 drives the seat mounting plate 7 to move rightwards, the movement of the seat mounting plate 7 drives the slide rod 61 to compress the spring 1, and the human body can feel the supporting force of the chair back 8; the screw rod 4 is rotated, the distance between the slide rod 61 and the second driving piece 3 is changed, the elasticity of the spring 1 is adjusted, and then the tilting force of the chair back 8 is adjusted, so that people with different weights can feel the supporting force of the chair back 8 with different sizes when pushing the chair back 8 with the back by adjusting the tilting force of the chair back 8.

Still include spacing frame 9, spacing frame 9 integrated into one piece in the inside of chassis main part 6, first driving piece 2, second driving piece 3 are installed in spacing frame 9. Limiting the distance the first driving member 2 moves forward and backward and preventing the second driving member 3 from being shifted.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (7)

1. The utility model provides a force regulating mechanism which characterized in that:

comprises a spring (1), a first driving piece (2), a second driving piece (3) and a screw rod (4);

the first driving piece (2) is arranged on the screw rod (4), and the screw rod (4) can drive the first driving piece (2) to move forwards and backwards;

one end of the spring (1) is connected with the second driving piece (3), the other end of the spring (1) is fixedly arranged on a fixed object arranged outside, the first driving piece (2) is in sliding connection with the second driving piece (3), and the first driving piece (2) can drive the second driving piece (3) to push against the spring (1) so that the spring (1) deforms in the axial direction of the spring.

2. The force adjustment mechanism of claim 1, wherein:

the first driving piece (2) is provided with a first inclined plane (21), the second driving piece (3) is provided with a second inclined plane (31), and the first inclined plane (21) is attached to the second inclined plane (31) and can slide mutually.

3. The force adjustment mechanism of claim 1, wherein:

the motor (5) is electrically connected with the screw rod (4), and the motor (5) can drive the screw rod (4) to rotate.

4. The utility model provides a take chair of back of the chair to lean on power regulation, includes chassis main part (6), seat mounting panel (7), back of the chair (8) and according to any one of claims 1-3 power regulating mechanism, seat mounting panel (7) are installed chassis main part (6) top, back of the chair (8) with seat mounting panel (7) are articulated, back of the chair (8) with chassis main part (6) are articulated, power regulating mechanism installs in chassis main part (6), its characterized in that:

a sliding rod (61) is slidably mounted in the chassis main body (6), the spring (1) is located between the sliding rod (61) and the second driving piece (3), and the sliding rod (61) can slide in the elastic force direction of the spring (1);

the seat mounting plate (7) is fixedly connected or hinged with the sliding rod (61); the chair back (8) can drive the seat mounting plate (7) to move when leaning, and the movement of the seat mounting plate (7) can drive the sliding rod (61) to slide so as to compress the spring (1).

5. A chair with reclining force adjustment of a chair back as set forth in claim 4, wherein:

the device further comprises a limiting frame (9), and the first driving piece (2) and the second driving piece (3) are installed in the limiting frame (9).

6. A chair with reclining force adjustment of a chair back as set forth in claim 4, wherein:

two mutually symmetrical sliding grooves (62) are formed in the chassis main body (6), two ends of the sliding rod (61) are inserted into the sliding grooves (62), and the sliding rod (61) can slide in the sliding grooves (62).

7. A chair with reclining force adjustment of a chair back as set forth in claim 4, wherein:

an oil-gas rod (10) is also arranged between the sliding rod (61) and the second driving piece (3).

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