CN212185708U

CN212185708U - Table and chair capable of lifting by using screw rod and nut

Info

Publication number: CN212185708U
Application number: CN202020343146.7U
Authority: CN
Inventors: 齐兆东
Original assignee: Tianjin Zhaoyi Technology Development Co ltd
Current assignee: Tianjin Zhaoyi Technology Development Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-12-22
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a table chair with screw rod adds nut lift, including table, base and jackscrew, the table leg is installed to the bottom of table to table leg internally mounted has the screw rod, the base upper end is fixed with spacing axle sleeve to spacing axle sleeve inside is hollow structure, spacing axle sleeve inside is fixed with the nut, the nut is inside through threaded connection screw rod, the jackscrew passes through the screw thread and installs the one side at spacing axle sleeve to jackscrew inner is used for fixed screw rod. The utility model discloses in reach continuous lift, convenient regulation, safe firm purpose with jackscrew reinforced method.

Description

Table and chair capable of lifting by using screw rod and nut

Technical Field

The utility model belongs to the technical field of the control valve, especially, relate to a table chair with screw rod adds nut lift.

Background

In order to protect the eyesight of students, the students in schools need to use lifting tables and chairs, the cost for purchasing the lifting tables and chairs is very high, and meanwhile, a large number of tables and chairs which cannot be lifted, cannot be lifted badly and cannot be safely and stably lifted are eliminated nationwide, so that huge material waste is caused; therefore, if the tables and chairs which cannot be lifted, are badly lifted and cannot be safely and stably lifted are transformed, huge purchase cost can be saved, and the waste of a large amount of table and chair materials can be avoided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a table chair with screw rod adds nut lift aims at solving the problem that exists in the aspect of expense, the material waste, the regulation of above-mentioned table chair renewal are inconvenient and safe firm etc..

The utility model discloses a realize like this, a table chair that goes up and down with screw rod and nut, include:

the table comprises a table plate, wherein table legs are arranged at the bottom of the table plate, and screw rods are arranged in the table legs;

the upper end of the base is fixed with a limiting shaft sleeve, the interior of the limiting shaft sleeve is of a hollow structure, a nut is fixed inside the limiting shaft sleeve, and the interior of the nut is connected with a screw rod through threads;

the jackscrew, the jackscrew passes through the screw thread and installs the one side at spacing axle sleeve to the inner fixed lead screw that is used for of jackscrew.

Preferably, when the upper section and the lower section of the table leg are thin at the top and thick at the bottom, the nut is installed at the lower end of the upper section, the limiting shaft sleeve is installed at the lower end of the lower section, and the installed parts are located inside the table and chair legs.

Preferably, when the upper section and the lower section of the table leg are thick at the top and thin at the bottom, the nut is installed at the upper end of the lower section, the limiting shaft sleeve is installed at the upper end of the upper section, and the installed parts are all located inside the table and chair legs.

Preferably, when the upper section and the lower section of the table leg are as thick as each other, the nut is installed at the lower end of the upper section, the limiting shaft sleeve is installed at the lower end of the lower section, and the installed part is located outside the table and chair leg.

Compared with the prior art, the beneficial effects of the utility model are that: the method for reinforcing by jackscrews achieves the purposes of continuous lifting, convenient adjustment, safety and stability.

Drawings

Fig. 1 is a schematic view of a first combination of the present invention;

FIG. 2 is a schematic view of a second combination of the present invention;

fig. 3 is a schematic view of a third combination of the present invention.

In the figure: 1. a screw shaft; 2. a nut; 3. a limiting shaft sleeve; 4. and (5) jacking the screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, in the description of the present invention, furthermore, "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected to the inside of two elements. To those of ordinary skill in the art, it will be understood that the specific meaning of the above terms in the present invention "a plurality" means two or more unless otherwise specifically limited.

Referring to fig. 1-3, the present invention provides a technical solution: the method comprises the following steps:

the desk comprises a desk plate, wherein desk legs are arranged at the bottom of the desk plate, and screw rods 1 are arranged in the desk legs;

the upper end of the base is fixed with a limiting shaft sleeve 3, the interior of the limiting shaft sleeve 3 is of a hollow structure, a nut 2 is fixed inside the limiting shaft sleeve 3, and the interior of the nut 2 is connected with a screw rod 1 through threads;

the jackscrew 4, the jackscrew 4 is installed in one side of spacing axle sleeve 3 through the screw thread to 4 inner ends of jackscrew are used for fixed lead screw 1.

The first combination mode: when the upper section and the lower section of the table leg are thin at the top and thick at the bottom, the nut 2 is arranged at the lower end of the upper section, the limiting shaft sleeve 3 is arranged at the lower end of the lower section, and the mounted parts are all positioned in the table and chair legs.

The second combination mode is as follows: when the upper section and the lower section of the table leg are thick at the top and thin at the bottom, the nut 2 is arranged at the upper end of the lower section, the limiting shaft sleeve 3 is arranged at the upper end of the upper section, and the mounted parts are all positioned inside the table and chair legs.

The third combination mode is as follows: when the upper and lower sections of the table leg are as thick, the nut 2 is arranged at the lower end of the upper section, the limiting shaft sleeve 3 is arranged at the lower end of the lower section, and the mounted parts are positioned outside the table and chair legs.

The first method is an internal method, as shown in fig. 1, and the screw 1 and nut 2 lifting mechanism is installed in the hollow position of the upper and lower sections of the chair leg in the first or second combination manner. For example, the M10 nut 2 is fixed to the lower end of the upper section of the table (chair) by welding, and the plane of the nut is perpendicular to the legs of the table (chair); punching an M10 hole at the lower end of the lower section of the table (chair), extending one end of a pre-manufactured screw rod nut with a limiting shaft sleeve 3 into the lower section of the table (chair) and exposing a screw cap from the bottom, fixing the limiting shaft sleeve 3 at the bottom end of the lower section of the table (chair) by using a welding method, wherein the exposed amount of the screw cap is proper to prevent the screw cap from contacting the ground, and the length of the screw rod 1 is proper to expose the upper end of the lower section by about one centimeter; after the two legs finish the operation, the upper section of the table (chair) leg is inserted into the lower section of the chair leg, the inner hexagonal wrench crank is respectively inserted into the hexagonal holes of the screw nuts of the screw rods 1 of the left leg and the right leg of the table (chair) to shake, and the left leg and the right leg are continuously alternated, so that the screw rods 1 are respectively screwed into the nuts of the upper section, when the upper section enters the lower section by 1-2 cm, the table (chair) capable of being continuously lifted is improved; if the height of the table (chair) needs to be adjusted, the height of the chair can be easily adjusted by only putting the table (chair) down and respectively rotating the screw rods 1 left and right by turns by using the crank of the inner hexagonal wrench, and the method for modifying and adjusting the table and the chair is the same; in order to increase the stability of the table and chair, the nut 2 and the limiting shaft sleeve 3 are preferably longer nuts and longer shaft sleeves, and lubricating oil is preferably added into the nut 2 and the limiting shaft sleeve 3, so that the resistance of the table and chair during adjustment is reduced. In order to better increase the stability, it is preferable that one to two nuts are welded at the upper end of the lower section of each table (chair) leg, then a hole with the inner diameter equal to that of the nut is drilled in the nut and used for installing a jackscrew for further reinforcing the adjusted table and chair, the head of the jackscrew is in a sharp-angled shape, and the jackscrew is provided with a large-diameter handle and is convenient to detach.

If the upper section and the lower section of the leg of the table and chair are thin at the bottom and thick at the top or the same thickness, the mounting method of the second combination mode or the third combination mode is suggested to be used, the transformation method is similar, the second combination mode is shown in figure 2, the third combination mode is shown in figure 3, but the mounting directions of the screw rod 1 and the nut 2 are different or the screw rod and the nut are mounted outside the leg of the table and chair, and when the third combination mode is used, in order to increase the stability of the table and chair, the screw rod and the nut with larger diameters are preferably adopted, and the lengths of the nut 2 and the limiting shaft sleeve 3 are properly increased.

The utility model discloses when height-adjusting, need put down the table chair, with the rotatory lead screw of crank rotation in proper order, because the screw thread is thinner, need rotate more number of turns, nevertheless fine screw thread also has the firm effect of enhancement.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a with screw rod and table chair that nut goes up and down which characterized in that includes:

the table comprises a table plate, wherein table legs are arranged at the bottom of the table plate, and screw rods (1) are arranged in the table legs;

the screw rod limiting device comprises a base, wherein a limiting shaft sleeve (3) is fixed at the upper end of the base, the interior of the limiting shaft sleeve (3) is of a hollow structure, a nut (2) is fixed inside the limiting shaft sleeve (3), and the interior of the nut (2) is connected with a screw rod (1) through threads;

jackscrew (4), one side at spacing axle sleeve (3) is installed through the screw thread in jackscrew (4) to jackscrew (4) inner is used for fixed lead screw (1).

2. The desk and chair capable of being lifted by the screw rod and the nut as claimed in claim 1, wherein: when the upper section and the lower section of the table leg are thin at the top and thick at the bottom, the nut (2) is installed at the lower end of the upper section, the limiting shaft sleeve (3) is installed at the lower end of the lower section, and the installed parts are all located inside the table and chair legs.

3. The desk and chair capable of being lifted by the screw rod and the nut as claimed in claim 1, wherein: when the upper section and the lower section of the table leg are thick at the top and thin at the bottom, the nut (2) is installed at the upper end of the lower section, the limiting shaft sleeve (3) is installed at the upper end of the upper section, and the installed parts are all located inside the table and chair legs.

4. The desk and chair capable of being lifted by the screw rod and the nut as claimed in claim 1, wherein: when the upper section and the lower section of the table leg are as thick as each other, the nut (2) is installed at the lower end of the upper section, the limiting shaft sleeve (3) is installed at the lower end of the lower section, and the installed parts are located outside the table and chair legs.