CN215126309U

CN215126309U - Swivel chair chassis with free lifting function

Info

Publication number: CN215126309U
Application number: CN202121227805.1U
Authority: CN
Inventors: 孙幸; 王杰
Original assignee: Zhejiang Anji Mingcheng Chair Industry Co ltd
Current assignee: Zhejiang Anji Mingcheng Chair Industry Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-14
Anticipated expiration: 2031-06-02

Abstract

The utility model provides a swivel chair chassis with free raising and lowering functions, the on-line screen storage device comprises a base, the dog, the cylinder mounting box, the lift arm-rod with can lie the knob, the fixed dog in base both sides, the cylinder mounting box is fixed on the dog, the lift arm-rod inserts in the cylinder mounting hole from dog one side, can lie knob threaded connection on the base, be fixed with seat support adjusting device on the base, seat support adjusting device includes first connecting plate, first sliding block and first screw rod, first connecting plate is fixed on the base, first connecting groove has been seted up on the first connecting plate, first connecting groove is seted up to a side direction along the middle department of first connecting plate, first sliding block sliding connection is in first connecting groove, first screw rod rotates connects first connecting plate, first sliding block of first screw rod threaded connection. The utility model discloses the product adopts the processing of nickel alloy material, and the surface is through anticorrosive processing of spraying paint, has wear-resisting and anticorrosive effect. By adopting the technical scheme, an operator can adjust the sitting depth of the seat.

Description

Swivel chair chassis with free lifting function

Technical Field

The utility model relates to a seat chassis production technical field, in particular to swivel chair chassis with free raising and lowering functions.

Background

The seat chassis is generally used for connecting the air pressure rod and the chair body and has the functions of adjusting the height of the seat, changing the tightness of the seat and the like by matching with the air pressure rod.

The patent that publication is CN205250963U discloses a seat support chassis of liftable swivel chair, including hanging wall, center, atmospheric pressure stick and bull stick, the hanging wall is connected with the seat support, the center is provided with the through-hole that the air feed pressure stick passed, the bull stick articulates in the hanging wall, the bull stick is provided with the operation section of control atmospheric pressure stick, be connected with the torsional spring that keeps operation section and atmospheric pressure stick conflict on the bull stick.

Exist among the above-mentioned technical scheme, when the user is in different position of sitting and sits on the seat support, because seat length is fixed, and the seat support of seat is in fixedly, the seat depth of seat can't change, and the area that the user can sit is not enough, can feel uncomfortable.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims to provide a swivel chair chassis with free lifting function. The seat adjusting device is arranged, so that an operator can adjust the sitting depth of the seat.

The above technical purpose of the present invention can be achieved by the following technical solutions: a swivel chair chassis with a free lifting function comprises a base, stop blocks, a cylinder mounting box, a lifting hand lever and a lying knob, wherein the stop blocks are fixed on two sides of the base, the cylinder mounting box is fixed between the two stop blocks, a cylinder mounting hole is formed in the cylinder mounting box, the lifting hand lever is inserted into the stop block on one side, the lifting hand lever is inserted into the cylinder mounting hole, the lying knob is in threaded connection with the base, a chair seat adjusting device is fixed on the base and comprises a first connecting plate, a first sliding block and a first screw rod, the first connecting plate is fixed on one side of the base, which is far away from the stop blocks, a first connecting hole is formed in the first connecting plate, the first connecting hole penetrates through the base, a first connecting groove is formed in the first connecting plate, and the first connecting groove is formed in one side direction along the middle of the first connecting plate, first sliding block sliding connection is in first connecting groove, first screw rod inserts in the first connecting plate and swivelling joint first connecting plate, first screw rod passes first connecting groove, first sliding block of first screw rod threaded connection.

When the installation, insert first sliding block in the seat support, when the seat of seat support is dark when needs are adjusted, the accessible rotates first screw rod, and first screw rod drives first sliding block and rotates, because first sliding block sets up in first connecting slot, therefore first sliding block can slide in first connecting slot to drive first sliding block.

Furthermore, a first cavity is formed in the base, the first cavity is formed in the position, in the middle of the first connecting plate, of one side, far away from the first connecting groove, and a balancing weight is arranged in the first cavity. Through being equipped with the balancing weight, make when the user sits down, can not lead to the seat to overturn because the stress point changes.

Furthermore, first screw rod is two-way screw rod, the positive screw thread and the first sliding block threaded connection of first screw rod, the negative screw thread and the balancing weight threaded connection of first screw rod. Through with balancing weight threaded connection on first screw rod, make when first sliding block position changes, the balancing weight can remove simultaneously.

Further, the length of the first connecting groove and the length of the first chamber are both one fourth of the total length of the base. Through the length to first connecting groove and first cavity restriction, prevent that the seat of seat from when deep too far, can take place the seat and topple over when the user uses.

Furthermore, a rotating handle is fixed at one end of the first screw rod, which is far away from the base. Through being equipped with the rotation handle, when needing to rotate first screw rod, the user accessible rotates the handle and drives first screw rod and rotate, and is more convenient.

Furthermore, a second sliding block is fixed on two sides of one end, far away from the base, of the first sliding block. During the installation, the second sliding block joint is inboard at the seat, through being equipped with the second sliding block, makes when the high reduction of seat, and the seat support can not produce the vibration because of highly changing suddenly.

Further, the second sliding block is an elastic soft block. Through establishing the second sliding block into the soft piece of elasticity, make first sliding block conveniently take out in the seat support of seat, change.

To sum up, the utility model discloses following beneficial effect has: drive first sliding block through first screw rod to drive the seat support through first sliding block, change and sit deeply. When a user sits down, the stress point is not changed, so that the chair can not be overturned. When the position of the first sliding block is changed, the balancing weight can move simultaneously. Prevent the seat from toppling over when the seat of the seat is too deep. When the first screw rod needs to be rotated, a user can drive the first screw rod to rotate by rotating the handle, and the rotation is more convenient. When the height of the chair is reduced, the chair seat can not generate vibration because of sudden height change. Make first sliding block conveniently take out in the seat support of seat, change.

Drawings

FIG. 1 is a first schematic view of the main structure of the present embodiment;

FIG. 2 is a second schematic view of the main structure of the present embodiment;

fig. 3 is a schematic sectional view of the main structure of the present embodiment.

Reference numerals: 1. a base; 2. a stopper; 3. a cylinder mounting box; 4. a lifting handle bar; 5. a reclining knob; 31. a cylinder mounting hole; 6. a seat adjusting device; 61. a first connecting plate; 62. a first slider; 63. a first screw; 64. a balancing weight; 65. rotating the grip; 66. a second slider; 67. a first connection hole; 68. a first connecting groove; 69. a first chamber.

Detailed Description

An embodiment of a swivel chair chassis with a free lifting function according to the present invention will be further described with reference to fig. 1 to 3.

A swivel chair chassis with free lifting function comprises a base 1, a stop block 2, a cylinder mounting box 3, a lifting hand lever 4 and a lying knob 5. The dog 2 is fixed on base 1 both sides, and cylinder mounting box 3 is fixed between two dog 2, has seted up cylinder mounting hole 31 on the cylinder mounting box 3. The lifting hand lever 4 is inserted into the stop block 2 at one side, and the lifting hand lever 4 is inserted into the cylinder mounting hole 31. The lying knob 5 is connected on the base 1 by screw thread, and the base 1 is fixed with a chair seat adjusting device 6. The seat adjusting device 6 includes a first connecting plate 61, a first sliding block 62, a first screw 63, a weight block 64, a rotating handle 65 and a second handle. The first connecting plate 61 is fixed on the surface of the base 1 far away from the stop block 2, and a first connecting hole 67 is formed in the first connecting plate 61. The first connection hole 67 penetrates through the base 1, and the first connection plate 61 is provided with a first connection slot 68 and a first cavity 69. The first connecting groove 68 is opened along the middle of the first connecting plate 61 toward one side, and the first chamber 69 is opened along the middle of the first connecting plate 61 toward one side far from the first connecting groove 68.

The first sliding block 62 is slidably connected in the first connecting groove 68, the second sliding block 66 is provided with two blocks, and the second sliding block 66 is fixed on two sides of one end of the first sliding block 62 far away from the base 1. The second slider 66 is a resilient soft block. The first screw 63 is inserted into the first connection plate 61 and rotatably connected to the first connection plate 61, and the first screw 63 passes through the first connection groove 68 and the first chamber 69. The first screw 63 is a bidirectional screw, the positive thread of the first screw 63 is in threaded connection with the first sliding block 62, and the negative thread of the first screw 63 is in threaded connection with the counterweight block 64. The turning handle 65 is fixed on one end of the first screw 63 far away from the base 1.

During the use, install the seat support on the seat mounting bracket, shift the chassis and fix in the seat mounting bracket bottom, fix first connecting plate 61 back on the seat mounting bracket, insert the seat support with first sliding block 62 in, second sliding block 66 joint is in the seat support. When the seat depth of seat support is adjusted to needs, the accessible rotates first screw rod 63, and first screw rod 63 drives first sliding block 62 and rotates, because first sliding block 62 sets up in first connecting groove 68, consequently first sliding block 62 can slide in first connecting groove 68, and first sliding block 62 can drive the seat support and remove to the seat depth of change seat.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a swivel chair chassis with free raising and lowering functions, includes base (1), dog (2), cylinder mounting box (3), lift handspike (4) and can lie knob (5), its characterized in that: the base (1) is fixed with the stop blocks (2) at two sides, the cylinder mounting box (3) is fixed between the two stop blocks (2), a cylinder mounting hole (31) is formed in the cylinder mounting box (3), the lifting hand lever (4) is inserted into the stop block (2) at one side, the lifting hand lever (4) is inserted into the cylinder mounting hole (31), the lying knob (5) is in threaded connection with the base (1), the base (1) is fixed with the chair seat adjusting device (6), the chair seat adjusting device (6) comprises a first connecting plate (61), a first sliding block (62) and a first screw rod (63), the first connecting plate (61) is fixed on one surface of the base (1) far away from the stop blocks (2), a first connecting hole (67) is formed in the first connecting plate (61), and the first connecting hole (67) passes through the base (1), first connecting groove (68) have been seted up on first connecting plate (61), first connecting groove (68) are seted up to one side direction along first connecting plate (61) middle department, first sliding block (62) sliding connection is in first connecting groove (68), first screw rod (63) insert in first connecting plate (61) and rotate and connect first connecting plate (61), first connecting groove (68) are passed in first screw rod (63), first screw rod (63) threaded connection first sliding block (62).

2. A swivel chair chassis with free lift function according to claim 1, characterized in that: a first cavity (69) is formed in the base (1), the first cavity (69) is formed in one side, far away from the first connecting groove (68), of the middle of the first connecting plate (61), and a balancing weight (64) is arranged in the first cavity (69).

3. A swivel chair chassis with free lift function according to claim 2, characterized in that: the first screw rod (63) is a bidirectional screw rod, a positive thread of the first screw rod (63) is in threaded connection with the first sliding block (62), and a negative thread of the first screw rod (63) is in threaded connection with the balancing weight (64).

4. A swivel chair chassis with free lift function according to claim 3, characterized in that: the length of the first connecting groove (68) and the length of the first chamber (69) are respectively one fourth of the total length of the base (1).

5. A swivel chair chassis with free lift function according to claim 1, characterized in that: a rotating handle (65) is fixed on one end of the first screw rod (63) far away from the base (1).

6. A swivel chair chassis with free lift function according to claim 1, characterized in that: and second sliding blocks (66) are fixed on two sides of one end, far away from the base (1), of the first sliding block (62).

7. The swivel chair chassis with free lifting function as claimed in claim 6, wherein: the second sliding block (66) is an elastic soft block.