CN209450141U - A kind of desk and chair height adjustment structure - Google Patents

Abstract

The utility model discloses a kind of desk and chair height adjustment structures, including earthing rod, the front and back of the earthing rod is fixedly connected to quiet earth bar, the top movable of the earthing rod is connected with lower containing tube, the inside of the lower containing tube is socketed with the upper telescopic rod extended to outside lower containing tube, and the internal activity of the lower containing tube is connected with the adjustment gear bar extended to outside lower containing tube.The desk and chair height adjustment structure, shake the whole height that regulation handle adjusts the raising and lowering of upper telescopic rod after spring retainer bar being pressed by setting, achieve the effect that adjust desk and chair height can quickly, by being connected with center connecting rod and center fixed plate between the opposite side of two lower containing tubes, the desk and chair overall structure can be made very firm, so that effective solution fixed desk chair is difficult to meet the problem of numerous students need because not being adjustable height.

Description

A kind of desk and chair height adjustment structure

Technical field

The utility model relates to desk and chair technical field, specially a kind of desk and chair height adjustment structure.

Background technique

Desk and chair is the tables and chairs that student attends class, while being also one kind of tables and chairs, is also student desk and chair or cries school Desk and chair, desk and chair can be divided according to age, material and function, and the division of age-based section can be divided into kindergarten's desk and chair, small Student desk and chair, desk for middle school student chair and university student's desk and chair, fixed desk chair and lift class can be divided by dividing by function Tables and chairs, wooden desk chair, plastic desk chair and steel wood desk and chair can be divided by dividing by material.

Desk and chair ingredient according to quality and size requirement, by the woollen that various specifications are made with various artificial bladed saws of becoming a useful person Process be known as ingredient, it is the major part in woodwork production process, desk and chair base in the current market This be all it is fixed, it has the characteristics of stable structure, but because the height of people is different, and this desk and chair is difficult to expire The needs of the numerous students of foot, so propose a kind of desk and chair height adjustment structure solve the problems, such as it is above-mentioned proposed in.

Utility model content

The purpose of this utility model is to provide a kind of desk and chair height adjustment structures, to solve to mention in above-mentioned background technique Fixed desk chair out is difficult to meet the problem of numerous students need because not being adjustable height.

To achieve the above object, the utility model provides the following technical solutions: a kind of desk and chair height adjustment structure, including Earthing rod, the front and back of the earthing rod are fixedly connected to quiet earth bar, the top movable connection of the earthing rod There is lower containing tube, the inside of the lower containing tube is socketed with the upper telescopic rod extended to outside lower containing tube, the lower containing tube Internal activity be connected with the adjustment gear bar extended to outside lower containing tube, the outside of the adjustment gear bar is fixedly connected with Regulation handle, the adjustment gear bar are connected with limited block, the inside of the upper telescopic rod far from one end of regulation handle It is connected with spring retainer bar, is connected with center connecting rod between the opposite side of two lower containing tubes, two It is connected with center fixed plate between the opposite side of the center connecting rod, is fixedly connected at the top of the upper telescopic rod Screw-threaded mounting stem, the top movable of the screw-threaded mounting stem are connected with seat board, and it is soft to be fixedly connected with seat at the top of the seat board Pad, the bottom of the seat board are connected with backboard fixed knob, and the internal activity of the backboard fixed knob is connected with extension To the seat board connecting rod at the seat board back side, the front of the seat board connecting rod is fixedly connected with desk chair seat board, the desk seat The front of plate is fixedly connected with seat board cushion.

Preferably, the shape of the quiet earth bar is rectangle, and is solid metal, and earthing rod is positive and back with it Quiet earth bar is welded formula structure.

Preferably, the outside of the lower containing tube and upper telescopic rod is in cylindrical body, and the diameter ratio of lower containing tube is above stretched The diameter of contracting bar is big.

Preferably, the adjustment gear bar is that adjustment gear and connecting rod form, and the inside of upper telescopic rod offer with The gear lifting groove of adjustment gear external engagement.

Preferably, the spring retainer bar is that brute spring and gag lever post form, the spring on each of which inside telescopic rod Gag lever post quantity is two, and offers seven on the inner wall at left and right sides of upper telescopic rod and connect with spring retainer bar external activity The limit hole connect.

Preferably, the quantity of the seat board connecting rod is two, and the shape of seat board connecting rod is L-shaped.

Preferably, the seat and seat board cushion are soft flannelette cushion, and desk chair seat board and seat board cushion Junction be connected with fixing bolt.

Compared with prior art, the utility model has the beneficial effects that the desk and chair height adjustment structure, it will by setting Spring retainer bar shakes the whole height that regulation handle adjusts the raising and lowering of upper telescopic rod after pressing, having reached makes desk and chair The effect that height can be adjusted quickly, by being connected with center connecting rod and center between the opposite side of two lower containing tubes Fixed plate can make the desk and chair overall structure very firm, and the quiet earth bar by earthing rod and its front and back is weldering Integral structure is connect, and earthing rod and quiet earth bar shape are in cross, can effectively avoid the desk and chair from student's seat occur Shaking when lower leads to the case where slipping, and is soft flannelette cushion by seat and seat board cushion, can effectively enhance Comfort when life is seated can be effective by can spring retainer bar be popped up and be fixed from limit hole after having adjusted height It reduces the desk and chair and has adjusted fixed unstable probability after height, so that effective solution fixed desk chair is not because being adjustable Highly it is difficult to meet the problem of numerous students need.

Detailed description of the invention

Fig. 1 is a kind of this practical desk and chair height adjustment structure schematic diagram.

In figure: 1- earthing rod；2- quiet earth bar；Containing tube under 3-；The upper telescopic rod of 4-；5- adjustment gear bar；6- is adjusted Handle；7- limited block；8- spring retainer bar；The center 9- connecting rod；The center 10- fixed plate；11- screw-threaded mounting stem；12- seat board； 13- seat；14- backboard fixed knob；15- seat board connecting rod；16- desk chair seat board；17- seat board cushion.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, a kind of embodiment provided by the utility model: a kind of desk and chair height adjustment structure, including ground connection Column 1, the front and back of earthing rod 1 are fixedly connected to quiet earth bar 2, and the shape of quiet earth bar 2 is rectangle, and are real Heart metal, and the quiet earth bar 2 of earthing rod 1 and its front and back is welded formula structure, the top movable of earthing rod 1 connects It is connected to lower containing tube 3, the inside of lower containing tube 3 is socketed with the upper telescopic rod 4 extended to outside lower containing tube 3, lower 3 He of containing tube The outside of upper telescopic rod 4 is in cylindrical body, and the diameter of lower containing tube 3 is bigger than the diameter of upper telescopic rod 4, lower containing tube 3 it is interior Portion is connected with the adjustment gear bar 5 extended to outside lower containing tube 3, and adjustment gear bar 5 is adjustment gear and connecting rod group At, and the inside of upper telescopic rod 4 offers the gear lifting groove with adjustment gear external engagement, the outside of adjustment gear bar 5 is solid Surely it is connected with regulation handle 6, adjustment gear bar 5 is connected with limited block 7 far from one end of regulation handle 6, upper telescopic rod 4 Internal activity is connected with spring retainer bar 8, and spring retainer bar 8 is that brute spring and gag lever post form, on each of which in telescopic rod 4 8 quantity of spring retainer bar in portion is two, and offers seven and spring retainer bar on the inner wall of 4 left and right sides of upper telescopic rod The limit hole of 8 external activities connection, is connected with center connecting rod 9 between the opposite side of two lower containing tubes 3, in two Center fixed plate 10 is connected between the opposite side of heart connecting rod 9, the top of upper telescopic rod 4 is fixedly connected with screw thread peace Bar 11 is filled, the top movable of screw-threaded mounting stem 11 is connected with seat board 12, and the top of seat board 12 is fixedly connected with seat 13, seat The bottom of plate 12 is connected with backboard fixed knob 14, and the internal activity of backboard fixed knob 14, which is connected with, extends to seat board 12 The seat board connecting rod 15 at the back side, the quantity of seat board connecting rod 15 is two, and the shape of seat board connecting rod 15 is L-shaped, and seat board connects The front of extension bar 15 is fixedly connected with desk chair seat board 16, and the front of desk chair seat board 16 is fixedly connected with seat board cushion 17, seat Position cushion 13 and seat board cushion 17 are soft flannelette cushion, and the junction activity of desk chair seat board 16 and seat board cushion 17 connects It is connected to fixing bolt, which shakes regulation handle 6 after spring retainer bar 8 being pressed by setting and adjust The whole height of the raising and lowering of telescopic rod 4 on section has achieved the effect that adjust desk and chair height can quickly, has passed through two It is connected with center connecting rod 9 and center fixed plate 10 between the opposite side of lower containing tube 3, the desk and chair can be made whole Structure is very firm, and quiet earth bar 2 by earthing rod 1 and its front and back is welded formula structure, and 1 He of earthing rod 2 shape of quiet earth bar is in cross, and capable of effectively avoiding the desk and chair from occurring, shaking leads to the case where slipping when student sits down, It is soft flannelette cushion by seat 13 and seat board cushion 17, can effectively enhances comfort when student is seated, leads to Can spring retainer bar 8 be popped up and be fixed from limit hole after having overregulated height, can be effectively reduced the desk and chair and adjusted Fixed unstable probability after height, thus effective solution fixed desk chair be difficult to meet because not being adjustable height it is vast The problem of student needs.

Working principle: the desk and chair height adjustment structure shakes regulation handle after pressing spring retainer bar 8 by setting 6 adjust the whole height of the raising and lowering of upper telescopic rod 4, have achieved the effect that adjust desk and chair height can quickly, pass through It is connected with center connecting rod 9 and center fixed plate 10 between the opposite side of two lower containing tubes 3, the desk and chair can be made Overall structure is very firm, and the quiet earth bar 2 by earthing rod 1 and its front and back is welded formula structure, and is grounded Column 1 and 2 shape of quiet earth bar are in cross, and the desk and chair can effectively be avoided to occur shaking when student sits down and cause to slip Situation is soft flannelette cushion by seat 13 and seat board cushion 17, can effectively enhance comfortable when student is seated Sense can be effectively reduced the desk and chair tune by can spring retainer bar 8 be popped up and be fixed from limit hole after having adjusted height Fixed unstable probability after height is saved, so that effective solution fixed desk chair is difficult to meet because not being adjustable height The problem of numerous students need.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (7)

1. a kind of desk and chair height adjustment structure, including earthing rod (1), it is characterised in that: the front of the earthing rod (1) and back Face is fixedly connected to quiet earth bar (2), and the top movable of the earthing rod (1) is connected with lower containing tube (3), the lower receipts Receiving the inside of pipe (3) is socketed with and extends to the external upper telescopic rod (4) of lower containing tube (3), and the inside of the lower containing tube (3) is living Dynamic be connected with extends to the external adjustment gear bar (5) of lower containing tube (3), and the outside of the adjustment gear bar (5) is fixedly connected Have regulation handle (6), the adjustment gear bar (5) is connected with limited block (7) far from the one end of regulation handle (6), described The internal activity of upper telescopic rod (4) is connected with spring retainer bar (8), living between the opposite side of two lower containing tubes (3) It is dynamic to be connected with center connecting rod (9), center fixed plate is connected between the opposite side of two center connecting rods (9) (10), it is fixedly connected with screw-threaded mounting stem (11) at the top of the upper telescopic rod (4), the top of the screw-threaded mounting stem (11) is living It is dynamic to be connected with seat board (12), it is fixedly connected with seat (13) at the top of the seat board (12), the bottom of the seat board (12) It is connected with backboard fixed knob (14), the internal activity of the backboard fixed knob (14), which is connected with, extends to seat board (12) The front of the seat board connecting rod (15) at the back side, the seat board connecting rod (15) is fixedly connected with desk chair seat board (16), the class The front of tables and chairs seat board (16) is fixedly connected with seat board cushion (17).

2. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the quiet earth bar (2) Shape be rectangle, be solid metal, and earthing rod (1) and its front and back quiet earth bar (2) be welded formula Structure.

3. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the lower containing tube (3) and The outside of upper telescopic rod (4) is in cylindrical body, and the diameter of lower containing tube (3) is bigger than the diameter of upper telescopic rod (4).

4. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the adjustment gear bar (5) It is formed for adjustment gear and connecting rod, and the inside of upper telescopic rod (4) offers and goes up and down with the gear of adjustment gear external engagement Slot.

5. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the spring retainer bar (8) Formed for brute spring and gag lever post, internal spring retainer bar (8) quantity of telescopic rod (4) is two each of which on, and on stretch Seven limit holes connecting with spring retainer bar (8) external activity are offered on inner wall at left and right sides of contracting bar (4).

6. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the seat board connecting rod (15) Quantity be two, and the shape of seat board connecting rod (15) is L-shaped.

7. a kind of desk and chair height adjustment structure according to claim 1, it is characterised in that: the seat (13) and Seat board cushion (17) is soft flannelette cushion, and the junction of desk chair seat board (16) and seat board cushion (17) is connected with Fixing bolt.