CN212678645U

CN212678645U - Desk and chair convenient to height-adjusting

Info

Publication number: CN212678645U
Application number: CN202021197024.8U
Authority: CN
Inventors: 王瀛永
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-12
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a desk and chair convenient for adjusting height, which comprises a chair and a fixed shell, wherein a fixedly connected supporting rod is fixedly connected on the chair, a thread groove is arranged on the supporting rod, the inner part of the fixed shell is rotationally connected with a first rotating rod, a first gear is fixedly connected on the first rotating rod, the surface of the rotating rod is fixedly connected with a second gear, and the inner part of the fixed shell is fixedly connected with a second rotating rod, the device has simple structure and can conveniently adjust the height of the chair.

Description

Desk and chair convenient to height-adjusting

Technical Field

The utility model relates to a table chair technical field specifically is a desk chair convenient to height-adjusting.

Background

The desk and chair is the desk and chair that the student used in class, is a kind of desk and chair, also called student desk and chair, school desk and chair, desk and chair can be divided according to age, material, function, divides according to the age bracket: school desk and chair for children, school student desk and chair for middle school students, and school student desk and chair for college students; according to the function, the method comprises the following steps: fixed desk and chair and lifting desk and chair; the materials are divided into: it is divided into wooden desk and chair, plastic desk and chair and steel-wood desk and chair.

In the prior art, the desk and chair are adjusted through bolts and different threaded holes when the lifting desk and chair is lifted greatly, but the height of the desk and chair is not convenient to adjust through the bolts and the threaded holes, the bolts are required to be completely screwed off, then the height of the desk and chair is lifted, and the bolts are required to be completely screwed on after lifting is finished.

SUMMERY OF THE UTILITY MODEL

The utility model provides a desk and chair convenient to height-adjusting, which solves the problem of inconvenient height adjustment of the current desk and chair.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a desk and chair convenient for height adjustment comprises a chair and a fixed shell, wherein a fixedly connected supporting rod is fixedly connected to the chair, a thread groove is formed in the supporting rod, a first rotating rod is rotatably connected to the inside of the fixed shell, a first gear is fixedly connected to the first rotating rod, a second gear is fixedly connected to the surface of the first rotating rod, a second rotating rod is fixedly connected to the inside of the fixed shell, a third gear is fixedly connected to the surface of the second rotating rod, a disc is fixedly connected to the surface of the second rotating rod, a plurality of positioning grooves are formed in the disc, a connecting shell is fixedly connected to the surface of the fixed shell, a positioning rod is slidably connected to the inside of the connecting shell, a first limiting disc is fixedly connected to the surface of the positioning rod, a first spring is sleeved on the surface of the positioning rod, and a fixed plate is fixedly connected to one end of the second rotating rod, the fixed plate is fixedly connected with a positioning shell, the inside of the positioning shell is connected with a limiting rod in a sliding mode, the surface of the limiting rod is fixedly connected with a second limiting disc, a second spring is sleeved on the surface of the limiting rod, the surface of the second limiting disc is fixedly connected with a clamping rod, a sliding groove is formed in the inner surface of the positioning shell, and a clamping groove is formed in the inner surface of the positioning shell.

Furthermore, a handle is rotatably connected to the fixing plate, and the second spring is located at the top of the second limiting disc.

Furthermore, a limiting groove is formed in the connecting shell, and the limiting groove is matched with one end of the limiting rod.

Further, one end of the limiting rod penetrates through the top of the fixing plate and extends to the bottom of the fixing plate, and the limiting rod is connected with the fixing plate in a sliding mode.

Furthermore, one end of the positioning rod is arranged to be a radian end, and the first spring is located on the left side of the first limiting disc.

Furthermore, the clamping rod is connected with the sliding groove in a sliding mode, and the limiting rod is connected with the positioning shell in a rotating mode.

Further, the first gear is engaged with the screw groove, and a surface of the second gear is engaged with a surface of the third gear.

Compared with the prior art, the beneficial effects of the utility model are that:

this desk chair convenient to height-adjusting drives first gear rotation through rotatory handle, drives bracing piece rebound by first gear to can adjust the height of chair, and fix a position the disc through the locating lever, prevent that the disc from reversing, avoid the bracing piece after rising to remove downwards, and stimulate the locating lever left alright with the height of down regulation chair, this device simple structure can conveniently adjust the height of chair.

Drawings

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

fig. 2 is a top view of the fixing housing of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

fig. 4 is an enlarged view of the point B in fig. 2 according to the present invention.

In the figure: 1-chair, 2-fixed shell, 3-support rod, 4-thread groove, 5-first rotating rod, 6-first gear, 7-second gear, 8-second rotating rod, 9-third gear, 10-disc, 11-locating slot, 12-connecting shell, 13-locating rod, 14-first limiting disc, 15-first spring, 16-fixing plate, 17-locating shell, 18-limiting rod, 19-second limiting disc, 20-second spring, 21-clamping rod, 22-sliding groove, 23-clamping groove, 24-handle and 25-limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a desk and chair convenient for height adjustment comprises a chair 1 and a fixed shell 2, wherein a fixedly connected supporting rod 3 is arranged on the chair 1, a thread groove 4 is formed in the supporting rod 3, a first rotating rod 5 is rotatably connected inside the fixed shell 2, a first gear 6 is fixedly connected on the first rotating rod 5, a second gear 7 is fixedly connected on the surface of the first rotating rod 5, a second rotating rod 8 is fixedly connected inside the fixed shell 2, a third gear 9 is fixedly connected on the surface of the second rotating rod 8, a disc 10 is fixedly connected on the surface of the second rotating rod 8, a plurality of positioning grooves 11 are formed in the disc 10, a connecting shell 12 is fixedly connected on the surface of the fixed shell 2, a positioning rod 13 is slidably connected inside the connecting shell 12, and a first limiting disc 14 is fixedly connected on the surface of the positioning rod 13, and the surface of locating lever 13 has cup jointed first spring 15, the one end fixedly connected with fixed plate 16 of second dwang 8, fixedly connected with location shell 17 on the fixed plate 16, the inside sliding connection of location shell 17 has gag lever post 18, the fixed surface of gag lever post 18 is connected with spacing dish 19 of second to the surface of gag lever post 18 has cup jointed second spring 20, the fixed surface of spacing dish 19 of second is connected with joint pole 21, sliding tray 22 has been seted up to the internal surface of location shell 17 to joint groove 23 has been seted up to the internal surface of location shell 17.

A plurality of constant head tanks 11 are the disc 10 of the different angles of rotation and fix a position to make the second dwang 8 after the rotation fix a position, make the bracing piece 3 after rising can not the downstream, when needs descend chair 1, pulling locating lever 13 left, locating lever 13 moves left and can make the one end of locating lever 13 no longer with constant head tank 11 joint, make disc 10 can rotate, thereby make bracing piece 3 can the downstream, the elevation structure of chair 1 and desk is the same.

The fixed plate 16 is rotatably connected with a handle 24, and the second spring 20 is located at the top of the second limiting disc 19.

The second spring 20 is used for resetting the limiting rod 18 after moving.

The connecting shell 12 is provided with a limiting groove 25, and the limiting groove 25 is matched with one end of the limiting rod 18.

The stop rod 18 is engaged with the stop groove 25 to stop the fixed plate 16, so that the fixed plate 16 cannot rotate.

One end of the limiting rod 18 penetrates through the top of the fixing plate 16 and extends to the bottom of the fixing plate 16, and the limiting rod 18 is connected with the fixing plate 16 in a sliding manner.

The stopper rod 18 can move up and down inside the fixing plate 16.

One end of the positioning rod 13 is set to be a radian end, and the first spring 15 is positioned on the left side of the first limit disc 14.

The arc end of the positioning rod 13 is used to make the disc 10 rotate clockwise but not anticlockwise.

The clamping rod 21 is connected with the sliding groove 22 in a sliding mode, and the limiting rod 18 is connected with the positioning shell 17 in a rotating mode.

The stopper rod 18 can rotate inside the positioning housing 17.

The first gear 6 meshes with the threaded groove 4, and the surface of the second gear 7 meshes with the surface of the third gear 9.

The first gear 6 rotates to drive the support rod 3 to move up and down, and the second gear 7 rotates to drive the third gear 9 to rotate.

When in work:

s1: when the height of the chair needs to be adjusted, the limiting rod 18 is pulled upwards, the limiting rod 18 moves upwards to enable one end of the limiting rod 18 to be not clamped with the limiting groove 25, the fixing plate 16 is not clamped with the limiting rod 18, the limiting rod 18 moves upwards to drive the second limiting disc 19 to move upwards, the second limiting disc 19 moves upwards to drive the clamping rod 21 to move upwards, and therefore the limiting rod 18 rotates.

S2: the stopper 18 is rotatory can drive the stopper dish 19 of second rotatory, the stopper dish 19 of second is rotatory can drive joint rod 21 rotatory, joint rod 21 is rotatory can make joint rod 21 get into the inside of joint groove 23 to 18 fix a position the stopper after the removal, then rotatory handle 24, the handle 24 is rotatory can drive fixed plate 16 rotatory, the fixed plate 16 is rotatory can drive the rotation of second dwang 8, the rotation of second dwang 8 can drive the rotation of third gear 9.

S3: third gear 9 is rotatory can drive second gear 7 rotatoryly, second gear 7 is rotatory can drive first dwang 5 rotatoryly, first dwang 5 is rotatory can drive first gear 6 rotatoryly, first gear 6 is rotatory can drive bracing piece 3 upwards removal, and second dwang 8 is rotatory can drive disc 10 rotatoryly, disc 10 is rotatory can make locating lever 13 shrink, and promote locating lever 13 and constant head tank 11 joint by first spring 15 after rotatory the completion, thereby second dwang 8 after the pairing rotation is fixed a position.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a desk chair convenient to height-adjusting, includes chair (1) and set casing (2), its characterized in that: fixedly connected with bracing piece (3) on chair (1), thread groove (4) have been seted up on bracing piece (3), the inside of set casing (2) is rotated and is connected with first dwang (5), fixedly connected with first gear (6) is gone up in first dwang (5) to the fixed surface of first dwang (5) is connected with second gear (7), the inside fixedly connected with second dwang (8) of set casing (2), the fixed surface of second dwang (8) is connected with third gear (9), and the fixed surface of second dwang (8) is connected with disc (10), a plurality of constant head tanks (11) have been seted up on disc (10), the fixed surface of set casing (2) is connected with connecting shell (12), the inside sliding connection of connecting shell (12) has locating lever (13), the utility model discloses a positioning device, including locating lever (13), one end fixedly connected with spacing dish (14) of locating lever (13) to the surface of locating lever (13) has cup jointed first spring (15), the one end fixedly connected with fixed plate (16) of second dwang (8), fixedly connected with location shell (17) on fixed plate (16), the inside sliding connection of location shell (17) has gag lever post (18), the fixed surface of gag lever post (18) is connected with spacing dish (19) of second to second spring (20) have been cup jointed on the surface of gag lever post (18), the fixed surface of spacing dish (19) of second is connected with joint pole (21), sliding tray (22) have been seted up to the internal surface of location shell (17) to joint groove (23) have been seted up to the internal surface of location shell (17).

2. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: the fixed plate (16) is rotatably connected with a handle (24), and the second spring (20) is positioned at the top of the second limiting disc (19).

3. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: the connecting shell (12) is provided with a limiting groove (25), and the limiting groove (25) is matched with one end of the limiting rod (18).

4. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: one end of the limiting rod (18) penetrates through the top of the fixing plate (16) and extends to the bottom of the fixing plate (16), and the limiting rod (18) is connected with the fixing plate (16) in a sliding mode.

5. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: one end of the positioning rod (13) is arranged to be a radian end, and the first spring (15) is positioned on the left side of the first limiting disc (14).

6. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: the clamping rod (21) is connected with the sliding groove (22) in a sliding mode, and the limiting rod (18) is connected with the positioning shell (17) in a rotating mode.

7. The desk and chair convenient for adjusting the height as claimed in claim 1, wherein: the first gear (6) is engaged with the threaded groove (4), and a surface of the second gear (7) is engaged with a surface of the third gear (9).