WO2011091617A1

WO2011091617A1 - Seat pan with improved structure

Info

Publication number: WO2011091617A1
Application number: PCT/CN2010/070996
Authority: WO
Inventors: 陈育成
Original assignee: Chen Yucheng
Priority date: 2010-01-29
Filing date: 2010-03-11
Publication date: 2011-08-04
Also published as: CN201641140U

Abstract

A seat pan with improved structure comprises a pan base (1) fixed on the top of a pneumatic pressure rod and pivotally connected to left and right connecting rods (2) of a backrest frame. A rotating shaft (3), a spring (4) and a spring-rotating base (5) are provided in the pan base (1), and the spring (4) is coiled around the rotating shaft (3) and located inside the spring-rotating base (5). The rotating shaft (3) passes through the axis center of the spring-rotating base (5) and is fixedly connected to the spring-rotating base (5). The two ends of the rotating shaft (3) are fixedly connected to the left and right connecting rods (2) of the backrest frame. Two racks (10, 12) meshed with each other are provided in the pan base (1). One end of one rack (10) is located in a sliding chute of the spring-rotating base (5), and the other end is pressed against a spring (11). The other rack (12) can slide in the pan base (1) so as to engage with or disengage from the aforementioned rack (10), and is connected with a pulling handle (16) by a pulling wire (15). One leg of the spring (4) coiled around the rotating shaft (3) is pressed against the cavity wall of the spring-rotating base (5), and the other leg against a sliding block (6), which can move up and down and is threadedly connected to a screw (7). The top of the screw (7) is provided with a rotating disc (8) connected to one end of a rocking handle (9) by bevel teeth. The seat pan has the advantage of simple structure, convenient operation, small size, light weight, and ergonomics.

Description

Seat chassis with improved structure

The utility model relates to a seat chassis with improved structure, in particular to a seat chassis which is simple in structure, convenient in operation, small in size, light in weight and ergonomically improved structure. Say

Background technique

In the existing seat chassis, because the space of the chassis is extremely limited, the multi-functional chassis structure often has a large volume and weight, and the control levers of various adjustment functions are extended to the outside, not only in the chassis. The handling is labor intensive, and the overall design of the seat is also susceptible to the aesthetics and is not easy to operate. To this end, a new structure has been proposed, that is, the chassis and the back frame are pivoted, and then the seat back frame is pivotally connected with a sliding rod, so that the seat back frame can swing back and forth with respect to the chassis, and the sliding rod is controlled by the adjusting wheel. The spring is controlled. A slidable sliding seat is connected to the rail frame of the seat frame, and the front and rear displacement and inclination angle of the seat cushion are controlled by the screw relative to the depth of the rocking screw. The chassis of this structure still has the disadvantages of complicated structure, inconvenient operation, and large volume. The existing seat is locked at an angle in the reclining function. After the user leaves, the seat cannot be directly restored to the original state, which not only takes up a lot of space, but also is not aesthetically pleasing, and is not ergonomic. Summary of the invention

The object of the present invention is to provide a seat pan having a simple structure, convenient operation, small size, light weight, and ergonomically improved structure.

The object of the present invention is achieved by the following technical solutions.

An improved structure of a seat chassis includes a chassis seat, the chassis seat is mounted on a top of the air pressure bar, and the chassis seat is pivotally connected to the left and right connecting rods of the seat back frame, wherein: the chassis seat is provided with a rotating shaft, a spring and The spring rotates the base, the spring ring is sleeved on the rotating shaft, the spring is located in the rotating base of the spring, the rotating shaft is connected to the axis of the rotating base of the spring and is fixedly connected with the rotating base of the spring, the two ends of the rotating shaft and the back frame The left and right connecting rods are fixedly connected; the chassis seat is provided with two racks that can be engaged with each other, wherein one end of one rack is located in a sliding slot on the rotating base of the spring, the other end is pressed against a spring, and the other rack can be pressed Sliding in the chassis seat to engage or disengage the aforementioned rack, the rack is connected to a handle by a pull wire; an outgoing end of the spring is pressed against the wall of the spring rotating base, and the other end is pressed against the upper and lower sides. On the lifting slider, the slider is screwed to a screw, and the top of the screw is provided with a turntable, and one end of the turntable and a crank is connected by a taper tooth. The handle connected to the rack by the pull wire is mounted on the chassis seat in a manner of swinging up and down.

Two springs are arranged on the rotating shaft, and two spring symmetric rings are sleeved on the rotating shaft.

A sliding seat sliding position control device is arranged between the inner frame of the sliding seat and the left and right supporting frame of the sliding seat, and the sliding position control device of the sliding seat comprises a control handle, a spring, a cylinder and a base, and the control handle and the spring are mounted on the base. On the seat, the spring is located in the cylindrical cavity of the cylinder.

The pneumatic rod lifting adjustment switch under the chassis seat is connected to the handle through a pull wire, and the handle is mounted on the chassis seat in a manner of swinging upward and downward.

The utility model has the following advantages compared with the prior art.

The utility model pulls the handle by hand, pulls the rack to pull the rack connected thereto by the pull wire, the two meshed racks are disengaged from each other, and the back of the chair is pulled back and forth by the spring rotating base to move the rack connected thereto, when it moves to the required In the position, the handle is released, and the rack meshes with the rack connected to the spring rotating base under the pressure of the spring, so that the seat back rotates at an angle. The mechanism for controlling the tilt angle of the seat back has the advantages of simple structure, convenient operation and small volume. The spring inside the rotating base of the spring allows the person to leave the seat, and the back of the chair can be returned immediately, saving space and ergonomics. The spring force of the spring can be adjusted by raising and lowering the slider driven by the handle to meet the needs of different people. The handle connected to the rack and the handle of the adjusting pneumatic rod are mounted on the chassis in a manner of swinging up and down. When the seat back angle adjusting mechanism and the seat cushion are adjusted, the handle can be pulled up and down, and the operation is convenient, and the daily operation habits are met. . DRAWINGS

Figure 1 is an external view of the seat pan of the present invention;

Figure 2 is a structural view of the seat pan of the present invention;

Figure 3 is a structural view of the handle and the rack of the seat pan of the present invention;

Figure 4 is a partial structural view of the seat pan of the present invention (1);

Figure 5 is a partial structural view of the seat pan of the present invention (2);

Figure 6 is an exploded structural view of the seat slide limiting device of the present invention;

Figure 7 is a structural view of the seat slide limiting device of the present invention. detailed description

The seat pan of the improved structure of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 7 , the seat pan of the improved structure of the present invention comprises a chassis base, and the chassis seat 1 is installed. At the top of the gas pressure rod, the chassis seat is pivotally connected to the left and right connecting rods 2 of the seat back frame. The chassis seat is provided with a rotating shaft 3, a spring 4 and a spring rotating base 5, and the shaft seat is provided with shaft holes on both sides thereof, the rotating shaft is laterally installed in the shaft hole, and can be rotated in the shaft hole, both ends of the rotating shaft and the seat back The left and right connecting rods of the rack are fixedly connected. There are two springs, and the symmetrical ring is sleeved on the rotating shaft and located in the rotating base of the spring. The spring rotating base is fixedly connected to the rotating shaft and can rotate with the rotating shaft. One of the two springs is pressed against the cavity wall of the spring rotating base, and the other end is pressed against a slider 6 that can be lifted up and down. The slider is screwed to a screw 7 vertically mounted on the chassis base, the screw A turntable 8 is mounted on the top of the turntable, and the bottom surface of the turntable is provided with a bevel tooth, and the turntable is meshed with the teeth on a rocker 9 through the tapered teeth. A sliding slot is formed at the bottom of the rotating base of the spring. The end of a rack 10 is located in the sliding slot. The other end of the rack is pressed against a spring 11 which is mounted on the chassis base. Another rack 12 is disposed in the lateral direction of the rack. One side of the rack is provided with a spring 13 and a fixed block 14 . The spring is located between the rack and the fixed block, and the rack is connected to the handle 16 via the pull wire 15 . The two racks can mesh with each other.

When people need to adjust the tilt angle of the back of the chair, turn the handle upwards, and pull the handle to move the rack with the lateral arrangement by the pull wire, and the two racks are disengaged from each other. The back of the chair rotates backwards, the back of the chair rotates the rotating shaft, and the rotating base of the spring rotates with the rotating shaft. The side of the sliding groove on the rotating base of the spring presses the end of the rack to move the rack longitudinally, and rotates to the back of the rack. At the required angle, the handle is released, and the spring on the fixed block presses the laterally disposed rack to knead the two racks to fix the longitudinally disposed rack at a certain position. When the person leaves the seat, the torsion force on the two springs on the rotating shaft causes the spring rotating base to rotate in the opposite direction. The spring rotating base drives the rotating shaft to rotate, and the rotating shaft drives the seat back to rotate, so that the seat back returns to the initial state, and is seated. The chair saves space. The person rotates the crank handle, and the teeth at the end of the crank handle mesh with the taper teeth on the turntable to drive the turntable to rotate. The turntable drives the screw connected thereto to rotate. The screw drives the fixed block to move up and down, and the fixed block drives the spring to rise and fall up and down, thereby adjusting The torque exerted by the spring on the shaft makes the force of the seat back on the person's back suitable for different people's needs.

The handle is mainly composed of a handle position 17, a rotating shaft 18 and a base 19. The base is provided with a rotating shaft hole and a mounting hole. The rotating shaft is installed in the rotating shaft hole, and the pull position is rotated up and down through the rotating shaft, and the base is laterally mounted through the mounting hole. Chair. When people need to turn the handle, they can pull up the handle position, which is in line with people's usual operating habits and brings convenience to people.

The sliding seat can be moved back and forth on the left and right support frames 21 of the sliding seat through the inner frame of the sliding seat. The left and right supporting frames of the sliding seat are provided with a control handle 25 for defining the moving position of the sliding seat. The bottom of the control handle is provided with a base 22, the base There is a spring 23 and a cylinder 24, and the spring is located in the cylindrical cavity, and the cylinder acts on the control handle by the spring pressing. When people need to move the slide, pull the control handle by hand, then move the slide back and forth. When moving to the desired position, release the control handle, control the handle under the pressure of the spring upward, and restrict the slide from moving back and forth. .

The pneumatic rod lifting adjustment switch under the chassis seat is connected to the handle 16 through the pull wire 15, and the handle is mounted on the chassis seat by swinging above and below. When people need to adjust the lifting height of the air pressure lever, they can pull up the handle position upwards, which is in line with people's usual operating habits and brings convenience to people.

Claims

Claim

1. A seat chassis of an improved structure, comprising a chassis seat, the chassis seat is mounted on a top of the air pressure rod, and the left and right connecting rods of the chassis seat and the back frame are pivotally connected, wherein: the chassis seat is provided with a rotating shaft, The spring and the spring rotate the base, the spring ring is sleeved on the rotating shaft, the spring is located in the rotating base of the spring, the rotating shaft is connected to the axis of the rotating base of the spring and is fixedly connected with the rotating base of the spring, the two ends of the rotating shaft and the back of the shaft The left and right connecting rods of the frame are fixedly connected; the chassis seat is provided with two racks that can be engaged with each other, one end of one rack is located in a sliding slot on the rotating base of the spring, and the other end is pressed against a spring, the other tooth The strip is slidable within the chassis seat for engaging or disengaging the aforementioned rack, the rack being coupled to a handle by a pull wire; an outgoing end of the spring is pressed against the wall of the spring rotating base, and the other end is pressed against On a slider that rises up and down, the slider is screwed to a screw, and a top of the screw is provided with a turntable, and one end of the turntable and a crank is connected by a taper tooth.

2. The seat pan of the improved structure according to claim 1, wherein: the handle connected to the rack by the pull wire is mounted on the chassis base in a manner of swinging up and down.

3. The seat pan of the improved structure according to claim 1, wherein: the rotating shaft is provided with two springs, and the two spring symmetrical rings are sleeved on the rotating shaft.

4. The seat pan of the improved structure according to claim 1, wherein: a sliding seat sliding position control device is disposed between the inner frame of the sliding seat and the left and right supporting frames of the sliding seat, and the sliding position of the sliding seat is provided. The control device includes a control handle, a spring, a cylinder and a base, the control handle and the spring are mounted on the base, and the spring is located in the cylindrical cavity of the cylinder.

5. The seat pan of the improved structure according to claim 1, wherein: the air bar lifting and lowering switch under the chassis seat is connected to the handle by a pulling wire, and the handle is mounted on the chassis seat in a manner of swinging upward and downward.