CN217013169U - Desk and chair with adjustable back - Google Patents

Abstract

The utility model discloses a desk and chair with adjustable backrest, which comprises a body, wherein a plurality of supports are arranged on the supports, a seat plate is arranged on the supports, a pipe body is arranged between the supports and the seat plate, the pipe body comprises a transverse pipe and a vertical pipe, the seat plate is fixed on the transverse pipe, the vertical pipe is provided with the backrest through a connecting assembly, the connecting assembly comprises a first connecting piece, a second connecting piece, a fixing piece, a sliding piece and a reinforcing piece, the first connecting piece and the second connecting piece are sleeved on the transverse pipe, the fixing piece is arranged on the second connecting piece, a sliding groove is arranged on the fixing piece, the sliding piece slides in the fixing piece, and the sliding piece is connected with the backrest through the reinforcing piece. Simultaneously will lean against and set up on the body through coupling assembling, coupling assembling establishes through first connecting piece and second connecting piece cover can adjust the angle of leaning against on the standpipe, through the sliding connection of mounting and slider, realizes leaning against the adjustment of height, can easily adjust and lean against, realizes that the user is when sitting, and the back is more comfortable a bit.

Description

Desk and chair with adjustable back

Technical Field

The utility model relates to the technical field of desk and chair, in particular to a desk and chair with an adjustable backrest.

Background

The desk and chair generally refers to a desk and chair used by students, and is one of the desks and chairs, also called as a student desk and chair, with the development of economy, more families are provided with desks and chairs for children, the existing chair has the problem that the backrest cannot be adjusted, and in fact, due to the difference of development and gender, the chair using the existing desk and chair in the market cannot meet the back comfort of the user due to the fact that the habits of using the backrest are also different.

SUMMERY OF THE UTILITY MODEL

The utility model provides a desk and chair with an adjustable backrest, aiming at the defects in the prior art.

In order to solve the technical problems, the utility model is solved by the following technical scheme: the utility model provides a desk chair with adjustable back includes desk chair body, the body includes a plurality of supports set up the seat on the support set up the body between support and the seat, the body is including violently managing and standpipe, the seat is fixed violently manage on the pipe the standpipe passes through coupling assembling and sets up and leans against, coupling assembling includes first connecting piece, second connecting piece, mounting, slider and reinforcement, first connecting piece and second connecting piece cover are established violently manage on set up the mounting on the second connecting piece set up the spout on the mounting the slider slides in the mounting, the slider passes through the reinforcement and leans against and is connected.

In the above scheme, preferably, a reinforcing rod is arranged between the two groups of brackets.

In the above scheme, it is preferred that the backrest is provided with two sets, and the backrest is symmetrically arranged on the body through the connecting components.

In the above scheme, preferably, a placing part is arranged at the bottom of the support, a first rod is arranged in the placing part, rollers are arranged at two ends of the first rod, and the first rod and the rollers are controlled by a fixing component to be located at the position of the placing part.

In the above scheme, preferably, the fixing component includes a sliding rod, a connecting rod, a push rod, a first rack, a second rack and a gear, the gear is rotatably connected to the placing part, the first rack is meshed with one side of the gear, the first rack is connected to the sliding rod through the connecting rod, the other side of the gear is meshed with the second rack, and the second rack is connected to the push rod.

In the above scheme, it is preferable that a slide is arranged on the support, the sliding rod slides on the slide, a limiting hole is formed in the bottom of the slide, and a matched limiting rod is arranged on the sliding rod.

In the above-mentioned scheme, preferably, spacing hole symmetry sets up on the slide, 2 groups connect through first elastic component between the gag lever post, the gag lever post is the metal material set up first sloping block and second sloping block in the slide bar set up the magnetism piece on first sloping block and the second sloping block, set up the control block between first sloping block and second sloping block, set up the first sloping block that matches first sloping block on the control block, match the second inclined plane of second sloping block, work as when the control block removes, first sloping block and second sloping block move in opposite directions.

In the above aspect, preferably, the first sloping block and the second sloping block are connected by a second elastic member.

The utility model has the beneficial effects that: set up leaning back that two sets of symmetries set up on the body, adapt to everyone's back, will lean back simultaneously and set up on the body through coupling assembling, coupling assembling establishes through first connecting piece and second connecting piece cover and can adjust the angle of leaning back on the standpipe, through the sliding connection of mounting and slider, realizes leaning back the adjustment of height, can easily adjust and lean back, realizes that the user is when sitting down, and the back is more comfortable a bit.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is an enlarged view of fig. 3 at a.

Fig. 5 is a view showing the structure of the slide bar according to the present invention.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 5, a desk and chair with an adjustable backrest comprises a desk and chair body, wherein the desk and chair body comprises a plurality of supports 1, seats 2 are arranged on the supports 1, furthermore, the supports 1 are arranged in two groups, pipe bodies are arranged between the supports 1 and the seats 2, namely, the supports 1 are symmetrically arranged below the pipe bodies, and the seats 2 are arranged above the pipe bodies.

Further, the body is including violently managing 3 and standpipe 4, violently manage 3 settings and be in between seat 2 and the support 1, just set up a plurality of backs 5 through coupling assembling on the standpipe 4, the back 5 sets up two sets ofly, it sets up to lean against 5 symmetries on the standpipe 4.

The connecting assembly comprises a first connecting piece 6, a second connecting piece 7, a fixing piece 8, a sliding piece 9 and a reinforcing piece 10, the vertical pipe 4 is sleeved with the first connecting piece 6 and the second connecting piece 7, the fixing piece 8 is connected with the second connecting piece 7, the fixing piece 8 is arranged on the second connecting piece 7, a sliding groove is formed in the fixing piece 8, the sliding piece 9 slides in the sliding groove, the sliding piece 9 is connected with the backrest 5 through the reinforcing piece 10, the backrest 5 can be adjusted according to users with different heights, the back can be adapted, and meanwhile the first connecting piece 6 and the second connecting piece 7 can be adapted to different postures through angle changing.

Preferably, backrest 5 sets up two sets ofly, two sets of backrest 5 symmetry set up in standpipe 4, and all through coupling assembling and this body coupling.

The support 1 sets up two sets ofly, will support 1 symmetry sets up violently pipe 3 bottom place 12 is set up to support 1 bottom set up between two sets of supports 1 and set up reinforcing rod 11, realize the stability that support 1 placed.

A first rod 13 is arranged in the placing piece 12, two ends of the first rod 13 are arranged at two ends of the placing piece 12, rollers 14 are arranged at two ends of the first rod 13, and when the rollers 14 are arranged at the bottom of the placing piece 12, the body can slide on the ground according to the rollers 14.

The rollers 14 are four groups, and the rollers 14 are arranged in the bracket 1 through fixing components. The fixing component comprises a sliding rod 15, a connecting rod 16, a top rod 17, a first rack 19, a second rack 20 and a gear 18, the sliding rod 15 is arranged in two groups of brackets 1 below the reinforcing rod 11, the sliding rod 15 slides in a slide rail 21 of the brackets 1, the gear 18 is rotatably connected in the placing part 12, the first rack 19 is engaged and connected to one side of the gear 18, the first rack 19 is connected with the sliding rod 15 through the connecting rod 16, the other side of the gear 18 is provided with the second rack 20 which is engaged and connected, the second rack 20 is connected with the top rod 17, the top rod 17 is connected with the body of the bracket 1, the top rod 17 pushes the top rod 17 to the upper part of the branch pipe when the sliding rod 15 moves downwards, and when the body of a user is not in contact with the body when the body is lifted, the roller 14 is arranged outside the placing part 12, it is realized that the roller 14 can bring the body to slide on the ground.

Meanwhile, limiting holes 23 are symmetrically formed in the slide rail 21, a limiting rod 22 is arranged on the slide rod 15 in a sliding mode, the limiting rod 22 is connected through a first elastic piece 24, a first inclined block 25 is arranged in the slide rod 15, a control block 27 is arranged in the middle of the slide rod 15, a first inclined surface is arranged on the control block 27 and is matched with the first inclined block 25, when the control block 27 moves towards the first inclined block 25, the first inclined block 25 moves towards the limiting rod 22, preferably, a metal piece is arranged on the limiting rod 22, the limiting rod 22 is adsorbed on a magnetic piece of the first inclined block 25, the limiting rod 22 moves towards the inside of the slide rod 15, due to the symmetry of the body, a second inclined block 26 is arranged on the other side of the slide rod 15, a second inclined surface is arranged on the control block 27, and the first inclined block 25 and the second inclined block 26 are connected through a second elastic piece 28, the second elastic member 28 has an elastic force greater than the magnetic force, which is greater than the elastic force of the first elastic member 24.

When the sliding rod 15 moves upwards, under the action of the fixing component, the roller 14 is located outside the placing part 12, the body can slide to move to achieve the body position, the control block 27 at this time moves the limiting rod 22 to the position far away from the sliding rod 15 under the influence of gravity and the second elastic part 28, when the limiting rod 22 moves into the limiting hole 23, the sliding rod 15 is fixed in the slideway 21, when the sliding rod 15 moves upwards, the control rod moves upwards firstly or the limiting rod 22 is separated from the limiting hole 23, and the roller 14 returns to the placing part 12, namely, the body is fixed on the ground.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a desk chair with adjustable back, includes the desk chair body, the body includes a plurality of supports set up the seat on the support, its characterized in that: set up the body between support and the seat, the body is including violently managing and standpipe, the seat is fixed violently the pipe is last the standpipe passes through coupling assembling and sets up and leans against, coupling assembling includes first connecting piece, second connecting piece, mounting, slider and reinforcement, first connecting piece and second connecting piece cover are established violently the pipe is last set up the mounting on the second connecting piece set up the spout on the mounting the slider slides in the mounting, the slider passes through the reinforcement and leans against and is connected.

2. The desk and chair with the adjustable backrest as claimed in claim 1, wherein: and a reinforcing rod is arranged between the two groups of brackets.

3. The desk and chair with the adjustable backrest as claimed in claim 1, wherein: the backrest is provided with two groups, and the backrest is symmetrically arranged on the body through the connecting component.

4. The desk and chair with the adjustable backrest as claimed in claim 1, wherein: the bottom of the support is provided with a placing piece, a first rod is arranged in the placing piece, rollers are arranged at two ends of the first rod, and the first rod and the rollers are controlled to be located at the position of the placing piece through a fixing assembly.

5. The desk and chair with the adjustable backrest as claimed in claim 4, wherein: the fixed component comprises a sliding rod, a connecting rod, an ejector rod, a first rack, a second rack and a gear, the gear is rotatably connected into the placing piece, the first rack is connected to one side of the gear in a meshed mode, the first rack is connected with the sliding rod through the connecting rod, the other side of the gear is connected with the second rack in a meshed mode, and the second rack is connected with the ejector rod.

6. The desk and chair with the adjustable backrest as claimed in claim 5, wherein: the sliding rod is arranged on the support and slides on the sliding plate, a limiting hole is formed in the bottom of the sliding rail, and a matched limiting rod is arranged on the sliding rod.

7. The desk and chair with the adjustable backrest as claimed in claim 6, wherein: spacing hole symmetry sets up on the slide, 2 groups connect through first elastic component between the gag lever post, the gag lever post is the metal material set up first sloping block and second sloping block in the slide bar set up the magnetic part on first sloping block and the second sloping block, set up the control block between first sloping block and second sloping block, set up the first sloping block that matches first sloping block on the control block, match the second inclined plane of second sloping block, work as when the control block removes, first sloping block and second sloping block move in opposite directions.

8. The desk and chair with the adjustable backrest as claimed in claim 7, wherein: the first inclined block and the second inclined block are connected through a second elastic piece.

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