CN205824511U - Telescopic expandable stent - Google Patents

Abstract

The utility model discloses a telescopic expansion bracket, which comprises an interface module, a lifting module and a base; wherein, the interface module is used for fixed connection with the feet of tables and chairs which need to be expanded; the lifting module comprises a shell, a worm, and a gear group and the knob; the worm and the gear set are arranged in the casing, the knob is arranged on the casing, and a through hole for the worm to move up and down is arranged in the casing; the gear set includes a driving wheel, a transmission module and a driven wheel, and the driving wheel passes through the transmission module Meshing with the driven wheel, and the driven wheel and the worm; the knob is fixedly connected with the driving wheel, used to drive the driving wheel to rotate, and then control the worm to move up and down; the top of the worm is fixedly connected to the interface module; the base and the lower end of the housing in the lifting module can be Disconnect the connection. The utility model is easy to operate, realizes the adjustable height of tables and chairs, and can replace different types of bases according to personal preferences and needs.

Description

Telescoping extension stand

technical field

The utility model relates to the mechanical field, in particular to a telescopic expansion bracket.

Background technique

In daily life, it is often found that the ratio of desks and chairs is inappropriate. If people use such desks and chairs for office work for a long time, it will inevitably lead to some cervical spondylosis and lumbar spondylosis. In addition, due to uneven ground or quality problems of tables and chairs, often the feet of tables and chairs cannot be completely attached to the ground, affecting comfort.

It can be adjusted by setting extension brackets on the feet of tables and chairs. The traditional method mainly realizes height adjustment by adjusting the drilling heights of the two parts inside and outside the extension brackets, and uses screws to realize fixation. But it is cumbersome to use like this, especially it is extremely inconvenient to adjust the height without tools.

Utility model content

The technical problem to be solved by the utility model is to provide a telescopic extension bracket for the defects involved in the background technology, which is installed on the desk and chair to realize the height adjustment of the desk and chair.

The utility model adopts the following technical solutions for solving the above-mentioned technical problems:

Telescopic expansion bracket, including interface module, lifting module and base;

The interface module is used for fixed connection with the feet of the tables and chairs that need to be expanded;

The lifting module includes a housing, a worm, a gear set and a knob;

The worm and the gear set are arranged in the casing, the knob is arranged on the casing, and the casing is provided with a through hole for the worm to move up and down;

The gear set includes a driving wheel, a transmission module and a driven wheel, the transmission module includes at least one transmission wheel, the driving wheel is meshed with the driven wheel through the transmission module, and the driven wheel is meshed with the worm;

The knob is fixedly connected with the driving wheel, and is used to drive the driving wheel to rotate, and then control the worm to move up and down;

The top of the worm is fixedly connected to the interface module;

The base is detachably connected to the lower end of the housing in the lifting module.

As a further optimization scheme of the telescopic extension bracket of the utility model, the interface module includes a base, a fixed block, a slider and a lead screw;

The base is provided with a chute matching the slider;

The fixed block is arranged at one end of the chute;

The slider is arranged on the chute and can slide along the chute;

The slider is provided with a threaded hole along the sliding direction, and the thread of the threaded hole matches the thread on the lead screw, and the lead screw is used to adjust the sliding position of the slider;

The sliding block and the fixing block are provided with a limiting structure for defining the feet of the table and chair after combination.

As a further optimization scheme of the telescopic extension bracket of the present invention, the limiting structure includes a first limiting block and a second limiting block;

Both the first limiting block and the second limiting block are arc-shaped, wherein the first limiting block is arranged on the slider, the second limiting block is arranged on the fixed block, and the first limiting block, the second limiting block The two limiting blocks form a bracket shape.

As a further optimization scheme of the telescopic extension bracket of the present invention, the transmission module adopts a transmission wheel.

The working method of the telescopic extension bracket includes the following processes:

Step 1), adjust the position of the slider through the screw, and open the distance between the first limit block and the second limit block;

Step 2), put the feet of the tables and chairs that need to be installed with extension brackets between the first and second limiting blocks;

Step 3), adjust the position of the slider through the lead screw, so that the first limit block and the second limit block fix the feet of the table and chair;

Step 4), turn the knob to drive the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate through the transmission module, and then bring the worm to move. When the length of the extension bracket is adjusted to the target length, stop rotating the knob.

Compared with other existing mechanical structure technologies by adopting the above technical scheme, the utility model has the following technical effects:

1. Realized the height adjustment of tables and chairs;

2. Easy to operate, just turn the external knob to lift and lower easily;

3. Different types of bases can be replaced according to personal preferences and needs.

Description of drawings

Fig. 1 is a structural schematic diagram between the slider, the fixed block and the leading screw in the interface module of the present invention;

Fig. 2 is a schematic diagram of the structure between the gear set and the worm in the lifting module of the present invention;

Fig. 3 is the structural representation of base in the utility model;

Fig. 4 is a schematic diagram of the overall structure of the utility model.

In the figure, 1-slider, 2-screw, 3-worm, 4-knob, 5-interface module, 6-lifting module, 7-base.

detailed description

Below in conjunction with accompanying drawing, the technical scheme of the utility model is described in further detail:

As shown in Figures 1 to 4, the utility model discloses a telescopic extension bracket, which includes an interface module, a lifting module and a base;

The interface module is used for fixed connection with the feet of the tables and chairs that need to be expanded;

The lifting module includes a housing, a worm, a gear set and a knob;

The worm and the gear set are arranged in the casing, the knob is arranged on the casing, and the casing is provided with a through hole for the worm to move up and down;

The gear set includes a driving wheel, a transmission module and a driven wheel, the transmission module includes at least one transmission wheel, the driving wheel is meshed with the driven wheel through the transmission module, and the driven wheel is meshed with the worm;

The knob is fixedly connected with the driving wheel, and is used to drive the driving wheel to rotate, and then control the worm to move up and down;

The top of the worm is fixedly connected to the interface module;

The base is detachably connected to the lower end of the housing in the lifting module.

The interface module includes a base, a fixed block, a slider and a lead screw;

The base is provided with a chute matching the slider;

The fixed block is arranged at one end of the chute;

The slider is arranged on the chute and can slide along the chute;

The slider is provided with a threaded hole along the sliding direction, and the thread of the threaded hole matches the thread on the lead screw, and the lead screw is used to adjust the sliding position of the slider;

The sliding block and the fixing block are provided with a limiting structure for defining the feet of the table and chair after combination.

The limiting structure includes a first limiting block and a second limiting block, both of which are arc-shaped, wherein the first limiting block is arranged on the slider, and the second limiting block is arranged on On the fixed block, the first limiting block and the second limiting block form a bracket shape.

The first limiting block and the second limiting block can also be simply set in a block shape, which can be arranged on the sliding block and the fixing block respectively.

For the sake of simple structure and durable product, the transmission module can only use a transmission wheel, and the base is only composed of a simple hollow cylinder for supporting tables and chairs.

The working method of the telescopic extension bracket includes the following processes:

Step 1), adjust the position of the slider through the screw, and open the distance between the first limit block and the second limit block;

Step 2), put the feet of the tables and chairs that need to be installed with extension brackets between the first and second limiting blocks;

Step 3), adjust the position of the slider through the lead screw, so that the first limit block and the second limit block fix the feet of the table and chair;

Step 4), turn the knob to drive the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate through the transmission module, and then bring the worm to move. When the length of the extension bracket is adjusted to the target length, stop rotating the knob.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present utility model in detail. For the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (4)

1. The telescopic extension bracket is characterized in that it includes an interface module, a lifting module and a base; The interface module is used for fixed connection with the feet of the tables and chairs that need to be expanded; The lifting module includes a housing, a worm, a gear set and a knob; The worm and the gear set are arranged in the casing, the knob is arranged on the casing, and the casing is provided with a through hole for the worm to move up and down; The gear set includes a driving wheel, a transmission module and a driven wheel, the transmission module includes at least one transmission wheel, the driving wheel is meshed with the driven wheel through the transmission module, and the driven wheel is meshed with the worm; The knob is fixedly connected with the driving wheel, and is used to drive the driving wheel to rotate, and then control the worm to move up and down; The top of the worm is fixedly connected to the interface module; The base is detachably connected to the lower end of the housing in the lifting module. 2. The telescopic extension bracket according to claim 1, wherein the interface module comprises a base, a fixed block, a slider and a lead screw; The base is provided with a chute matching the slider; The fixed block is arranged at one end of the chute; The slider is arranged on the chute and can slide along the chute; The slider is provided with a threaded hole along the sliding direction, and the thread of the threaded hole matches the thread on the lead screw, and the lead screw is used to adjust the sliding position of the slider; The sliding block and the fixing block are provided with a limiting structure for defining the feet of the table and chair after combination. 3. The telescopic extension bracket according to claim 2, wherein the limiting structure comprises a first limiting block and a second limiting block; Both the first limiting block and the second limiting block are arc-shaped, wherein the first limiting block is arranged on the slider, the second limiting block is arranged on the fixed block, and the first limiting block, the second limiting block The two limiting blocks form a bracket shape. 4. The telescopic extension bracket according to claim 1, wherein the transmission module adopts a transmission wheel.