CN209965768U - Novel seat lifting limiting structure - Google Patents

Abstract

The utility model relates to a novel seat goes up and down limit structure installs between the chair upper rack and the chair lower rack that slide mutually and set up, including knob, interlock mechanism, stopper, spacing piece is fixed in the die cavity of chair lower rack, and spacing piece is equipped with a plurality of spacing holes along the interval on the length direction, and an interlock mechanism tip is connected with the knob, and another tip is connected with the stopper, and the knob rotates the setting and puts on the shelf at the chair, and can drive interlock mechanism and drive the spacing hole of stopper business turn over. The utility model discloses bury the limit structure that goes up and down in the chair puts up and down, reduce the potential safety hazard, the outward appearance is succinct, and the operation is also simpler.

Description

Novel seat lifting limiting structure

Technical Field

The utility model belongs to the technical field of mechanical structure, concretely relates to novel seat goes up and down limit structure is particularly useful for the desk chair.

Background

At present, various student desks and chairs have a structure capable of lifting and limiting for the purposes of convenient operation and light volume.

For example, prior art document 1 specifically discloses a child dining chair, which includes a supporting rod, a seat mechanism mounted on the supporting rod, and a lifting mechanism capable of performing stepless adjustment of the seat mechanism, wherein the lifting mechanism includes a sliding seat, a limiting component and a first adjusting rope, the limiting component is disposed on the sliding seat, the sliding seat is provided with an opening for the limiting component to extend into the sleeve, and the first adjusting rope is connected with the limiting component and can drive the limiting component to abut against or loosen the supporting rod in the sleeve. When this patent application used, the first regulation rope of pulling can pull spacing subassembly and make its spacing effect of eliminating the bracing piece, and at this moment, seat mechanism can follow the bracing piece and reciprocate, loosens first regulation rope, and spacing subassembly stretches into sheathed tube opening and supports tightly with the bracing piece, prevents that the sliding seat from sliding from top to bottom along with the bracing piece, plays the positioning action.

However, the lifting limiting structure is exposed outside and has potential safety hazards.

Prior art document 1: patent application publication No. CN 105708228A.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art not enough, provide a novel seat lift limit structure, bury lift limit structure in the chair puts up or puts down, reduce the potential safety hazard, the outward appearance is succinct, and the operation is also simpler.

For solving the above technical problem, the utility model discloses a technical scheme who takes is:

the utility model provides a novel seat goes up and down limit structure, installs between the chair upper rack and the chair lower rack that relative slip set up, including knob, interlock mechanism, stopper, spacing piece is fixed in the die cavity of chair lower rack, and spacing piece is equipped with a plurality of spacing holes along the interval on the length direction, and an interlock mechanism tip is connected with the knob, and another tip is connected with the stopper, and the knob rotates and sets up on the chair upper rack, and can drive interlock mechanism and drive the spacing hole of stopper business turn over.

Preferably, the linkage mechanism comprises a connecting rod wire spring, a sliding seat, a sliding pin and a fixing box, the fixing box is fixedly arranged in a cavity of the upper frame of the chair, the lower end part of the connecting rod wire spring is fixed on the upper part of the sliding seat, the upper end part of the connecting rod wire spring is connected to the knob, the sliding seat is arranged in the fixing box in a vertically sliding mode, the limiting block can slide vertically relative to the sliding seat through the sliding pin, and the knob drives the connecting rod wire spring and the sliding seat to move vertically when rotating to drive the limiting block to retract or extend out of the limiting.

Further preferably, the fixed box divides the inner space into an inner part and an outer part through the partition plate, the lower part of the sliding seat slides to be arranged in the outer space of the fixed box, the sliding pin is arranged on the outer side surface of the lower part of the sliding seat in an up-and-down sliding manner, the limiting block is arranged in the inner space of the fixed box, one end part of the end part is fixed on the sliding pin through the opening of the sliding seat and the partition plate and can slide up and down along with the sliding pin relative to the sliding seat, the limiting block is sleeved with a limiting spring, two end parts of the limiting spring are respectively abutted to the partition plate and the fixed box and enable the limiting block to always keep extending out of the limiting hole, and holes for the.

Further preferably, for convenience of manufacture, the outer side surface of the lower part of the sliding seat is an inclined surface or an arc surface, preferably an inclined surface.

Further preferably, in order to limit the sliding of the sliding pin, two ends of the inclined surface or the arc surface are provided with convex stoppers.

Preferably, the upper end portion of the link wire spring is mounted on the knob through a fixing pin, the mounting portion of the fixing pin is deviated from the rotation axis of the knob, the knob has both a stationary state and a rotating state, the upper end portion of the link wire spring is located at a middle lower portion of the knob when the knob is stationary, and the upper end portion of the link wire spring moves upward along the rotation trajectory of the knob when the knob is rotated.

Preferably, in order to facilitate the operation, the limiting structure further comprises a handle and a knob blocking piece fixedly connected with the knob, and the handle and the knob blocking piece are located on two sides of the knob.

Preferably, in order to more simply and clearly display the lifting height, the outer side of the chair frame is provided with scale marks along the length direction.

A chair comprises an upper chair frame, a lower chair frame and the lifting limit structure, wherein legs of the upper chair frame are arranged in corresponding cavities of the lower chair frame in a sliding mode, and the lifting limit structure is arranged between the upper chair frame and the lower chair frame.

Due to the adoption of the technical scheme, compared with the prior art, the utility model have the following advantage:

the utility model discloses bury the limit structure that goes up and down in the chair puts up and down, reduce the potential safety hazard, the outward appearance is succinct, and the operation is also simpler.

Drawings

FIG. 1 is an exploded view schematically showing the structure of example 1;

FIG. 2 is a schematic structural diagram of a limiting block in embodiment 1;

FIG. 3 is a schematic view of a lift stop structure in embodiment 1;

FIG. 4 is an exploded perspective view of the present embodiment 2;

FIG. 5 is a schematic structural diagram of a limiting block in embodiment 2;

wherein: 1. a chair frame; 2. a chair lower frame; 3. a lifting limit structure; 31. a knob; 32. a limiting block; 321. a limiting block body; 322. a stopper; 33. a limiting sheet; 34. a limiting hole; 35. a connecting rod wire spring; 36. a sliding seat; 361. a bevel; 362. a stopper; 37. a slide pin; 38. a fixing box; 39. a limiting spring; 4. a fixing pin; 5. fixing the rivet; 6. a handle; 7. a knob catch; 8. scale lines are marked.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples. It should be noted that, the upper and lower in the embodiments are described with reference to a person sitting on a seat, the position near the head of the person is defined as the upper position, and the position near the feet of the person is defined as the lower position; the inner and outer parts are explained by reference to the limiting sheet, the part near the limiting sheet is defined as the inner part, and the part far from the limiting sheet is defined as the outer part.

Example 1

As shown in fig. 1 to 3, a chair comprises an upper chair frame 1, a lower chair frame 2 and a lifting limit structure 3, wherein the legs of the upper chair frame 1 are slidably arranged in corresponding cavities of the lower chair frame 2, and the lifting limit structure 3 is arranged between the upper chair frame 1 and the lower chair frame 2.

The lifting limiting structure 3 comprises a knob 31, a linkage mechanism, a limiting block 32 and a limiting sheet 33.

The limiting sheet 33 is fixed in the cavity of the lower chair frame 2 by fixing self-tapping screws, and a plurality of limiting holes 34 are arranged on the limiting sheet 33 at even intervals along the length direction.

The linkage mechanism is positioned in the cavity of the upper chair frame 1, one end part of the linkage mechanism is connected with the knob 31, the other end part of the linkage mechanism is connected with the limit block 32, the knob 31 is rotatably arranged on the upper chair frame 1, and the linkage mechanism can be driven to drive the limit block 32 to enter and exit the limit hole 34.

In the present embodiment, the interlocking mechanism includes a link wire spring 35, a slide holder 36, a slide pin 37, and a fixed case 38. The fixed box 38 is fixed in the cavity of the upper frame 1, and the inner space is divided into an inner part and an outer part by a partition board, the lower part of the sliding seat 36 is arranged in the outer space of the fixed box 38 in a sliding way, and the inner side surface of the lower part of the sliding seat 36 is provided with a sliding groove along the sliding direction, the sliding pin 37 is arranged on the outer side surface of the lower part of the sliding seat 36 in a sliding way, for the convenience of manufacture, the outer side surface of the lower part of the sliding seat 36 is an inclined surface 361 which is gradually widened from top to bottom, and in order to limit the sliding of the sliding pin 37, two ends of the inclined surface 361 are provided with raised stoppers 362, the limiting block 32 is arranged in the inner space of the fixed box 38, one end is fixed on the sliding pin 37 through an opening on the partition board and the sliding groove on the sliding seat 36 and can slide up and down relative to the sliding seat 36 along with the sliding pin 37, a limiting spring 39 is sleeved outside the limiting block 32 In this embodiment, the specific structure of the stopper 32 is a stopper body 321 and a stopper 322 connected with each other, the section of the stopper body 321 is circular, the section of the stopper 322 is waist-shaped, the diameter of the stopper 322 is larger than that of the stopper body 321, the stopper 322 is located inside, the limiting spring 39 abuts between the partition board and the stopper 322, the fixing box 38 and the chair upper frame 1 are both provided with holes for the stopper 322 of the stopper 32 to enter and exit, the lower end of the connecting rod wire spring 35 is fixed on the upper portion of the sliding seat 36 through the fixing rivet 5, the upper end of the connecting rod wire spring is connected to the knob 31, and the knob 31 drives the connecting rod wire spring 35 and the sliding seat 36 to move up and down when rotating, so as to drive the stopper 32 to retract or extend out of the.

In this embodiment, the upper end portion of the link wire spring 35 is mounted on the knob 31 by the fixing pin 4, the mounting position of the fixing pin 4 is deviated from the rotation axis of the knob 31, the knob 31 has both a stationary state and a rotating state, the upper end portion of the link wire spring 35 is located at the middle lower portion of the knob 31 when the knob 31 is stationary, and the upper end portion of the link wire spring 35 moves upward along the rotation trajectory of the knob 31 when the knob 31 is rotated.

For the convenience of operation, the lifting limiting structure 3 of the present embodiment further includes a handle 6 and a knob stop 7 fixedly connected to the knob 31, and the handle 6 and the knob stop 7 are located on two sides of the knob 31.

In order to more simply and clearly display the lifting height, scale marks 8 are arranged on the outer side of the chair upper frame 1 along the length direction, and the scale intervals of the scale marks 8 correspond to the intervals among the limiting holes one by one.

The limiting height of the embodiment can be adjusted to 34cm-44 cm.

The operation method of the embodiment comprises the following steps: the knob 31 is rotated, the upper end part of the connecting rod wire spring 35 moves upwards along with the rotating track of the knob 31 to drive the sliding seat 36 to move upwards, the sliding pin 37 moves downwards relative to the sliding seat 36, the limiting spring 39 is compressed, the limiting block 32 retracts from the limiting hole 34, the sliding chair is put on the shelf 1 to a proper position, the knob 31 is reset, and the limiting block 32 extends out of the limiting hole 34 under the action of the limiting spring 39 to limit.

Example 2

As shown in fig. 4 to 5, the difference between the embodiment and the embodiment 1 is that the section of the stopper body 321 is circular, and the front end of the stopper 322 is conical, so as to more conveniently slide into the stopper hole 34.

The above description of the present invention is provided to help understand the method and the core idea of the present invention, and the purpose of the present invention is to allow people familiar with the art to understand the contents of the present invention and to implement the method, and thus the protection scope of the present invention cannot be limited by the above description. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (9)

1. The utility model provides a novel seat goes up and down limit structure, installs between the chair upper ledge and the chair lower frame that relative slip set up, its characterized in that: including knob, interlock mechanism, stopper, spacing piece is fixed in the die cavity of chair undercarriage, and spacing piece is equipped with a plurality of spacing holes along the interval on the length direction, an interlock mechanism tip is connected with the knob, and another tip is connected with the stopper, the knob rotates to be set up on the chair undercarriage, and can drive interlock mechanism and drive the spacing hole of stopper business turn over.

2. The novel seat lifting limiting structure of claim 1, wherein: the linkage mechanism comprises a connecting rod wire spring, a sliding seat, a sliding pin and a fixing box, the fixing box is fixedly arranged in a cavity of the upper frame of the chair, the lower end part of the connecting rod wire spring is fixed on the upper part of the sliding seat, the upper end part of the connecting rod wire spring is connected to the knob, the sliding seat is arranged in the fixing box in a vertically sliding mode, the limiting block can slide vertically relative to the sliding seat through the sliding pin, and the knob drives the connecting rod wire spring and the sliding seat to move vertically when rotating to drive the limiting block to retract or extend out of the limiting hole.

3. The novel seat lifting limiting structure of claim 2, wherein: the fixed box divides the inner space into two parts inside and outside through the baffle, the lower part of sliding seat slides and sets up outer space in the fixed box, the sliding pin sets up with sliding from top to bottom on the lower part lateral surface of sliding seat, the stopper sets up inner space in the fixed box, and a tip passes through opening on sliding seat and the baffle is fixed sliding pin is last and can be along with the sliding pin relative sliding seat slide from top to bottom, the stopper overcoat is equipped with spacing spring, spacing spring's both ends respectively with baffle and fixed box looks butt make the stopper remain throughout and stretch out the trend in spacing hole, all be equipped with the hole that supplies stopper tip business turn over on fixed box and the chair put on the shelf.

4. The novel seat lifting limit structure of claim 2 or 3, characterized in that: the outer side surface of the lower part of the sliding seat is an inclined surface or an arc surface.

5. The novel seat lifting limiting structure of claim 4, wherein: and two ends of the inclined surface or the cambered surface are provided with convex stop blocks.

6. The novel seat lifting limit structure of claim 2 or 3, characterized in that: the upper end of the connecting rod wire spring is installed on the knob through a fixing pin, the installation position of the fixing pin deviates from the rotating axis of the knob, the knob is in a static state and a rotating state, when the knob is static, the upper end of the connecting rod wire spring is located at the middle lower part of the knob, and when the knob rotates, the upper end of the connecting rod wire spring moves upwards along with the rotating track of the knob.

7. The novel seat lifting limiting structure according to any one of claims 1 ~ 3, further comprising a handle and a knob blocking piece fixedly connected with the knob, wherein the handle and the knob blocking piece are located on two sides of the knob.

8. The novel seat lifting limiting structure of claim 1 ~ 3, wherein the outer side of the upper chair frame is provided with scale marks along the length direction.

9. A seat comprising an upper chair frame, a lower chair frame and a lift stop structure as claimed in any one of claims 1 to 7, the legs of the upper chair frame being slidably disposed within corresponding cavities of the lower chair frame, the lift stop structure being disposed between the upper and lower chair frames.

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