KR101674473B1

KR101674473B1 - Apparatus for adjusting height of desk

Info

Publication number: KR101674473B1
Application number: KR1020160028161A
Authority: KR
Inventors: 김종일
Original assignee: 주식회사 하이파오피스
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2016-11-23

Abstract

A motor driver;
A bolt shaft coupled with the motor driving unit;
A bolt pipe shaft coupled to the bolt shaft;
A nut rod coupled to the bolt pipe shaft;
And an outer column surrounding the nut rod from the outside,
When the motor is rotated by the motor driving unit, the bolt shaft is rotated. When the bolt shaft rotates, the bolt pipe shaft rotates and the bolt pipe shaft rotates to move the nut rod. And a desk height adjusting device for adjusting the height of the desk.

Description

Apparatus for adjusting height of desk

The present invention relates to a desk height adjusting device, and more particularly, to a desk height adjusting device capable of freely adjusting a height of a desk by manipulating a motor directly below a desk top, And a desk height adjusting device.

In general, the desk may be different in shape and size depending on the intended use, but it may be provided at various heights depending on the user.

These desks are made in various sizes and heights depending on the person who uses them, but unlike the case where they are used individually, it is almost impossible to provide them in accordance with the size of the body when they are used in many places such as public institutions and schools.

Therefore, in the case of student desk, it is designed to be made several sizes according to the average height of students, while a normal desk and chair is made to be a certain height based on the average size of the general public

In other words, since a desk provided by a group is manufactured so as to fit the average height of an ordinary person regardless of the physical condition of the user, the user who is overly small or large in physical condition compared to the average, It is a reality that there is considerable inconvenience.

When a desk that does not fit with such physical conditions is used for a long time, the user's posture becomes incorrect, which causes the back to bend or the body to deform and suffer the shoulder.

For this purpose, a variety of configurations for adjusting the height of the desk have been proposed, and some of them have been applied in the field, but still the height adjustment is inconvenient, and there is a frequent breakage or damage.

The prior art 1 of the prior art 1 relates to a desk height adjusting apparatus, which comprises a belt cover having an upwardly open channel shape and being tightly fastened and fixed on both sides of a bottom surface of a desk top plate; A pair of ball screws rotatably supported by bearings through the bottom surfaces of both sides of the belt cover to form a screw on an outer circumferential surface thereof; A power transmission unit comprising a gear pulley formed of a spur gear fixed to the upper end of the ball screw provided inside the belt cover and a belt connecting the gear pulleys; A cylindrical screw cover having an upper end coupled to a bottom surface of the belt cover to cover the outside of the ball screw; The upper portion of which is inserted into the screw cover so as to be able to be raised and lowered and the nut is inserted into the upper portion so that the ball screw is screwed to the nut, A fixed post of a shape; A manipulating handle in the form of a disk which is fixed to the upper end of one side ball screw inside the belt cover and is manually rotatable from the outside so that a part of the main surface protrudes outside the belt cover; Wherein the belt cover is fixed to the bottom surface of the upper cover by horizontally bending the upper and lower ends of the belt cover so that the horizontal curved surface is closely attached to the bottom surface of the upper cover and the bearing is attached to the bottom surface of the belt cover, Therefore, both sides of the ball screw are rotated by the power transmission part, and the upper and lower parts of the desk are moved up and down. By the simpler structure and convenient operation, the desk top can be adjusted to the height suitable for each body condition. However, there are limitations in controlling the height of the desk from time to time, such as changing positions frequently and using a single desk or getting up and working while sitting back and working.

The object of the present invention is to provide a desk having a desired height in an instant due to the motor

1. Korea Patent Registration No: 10-0983792 (September 27, 2010) 2. Korea Patent Registration No .: 10-1591069 (February 18, 2016)

And to provide a height adjusting device that can be adjusted and used according to the user's body condition.

The first is that the width of the highest height and the lowest height can be widened.

The second is to speed up and down by 2 times speed by the same motor capacity.

It can be ascended and descended at a high speed, thereby reducing noise.

In order to solve the above-described problems, an apparatus is configured as follows.

A motor driver;

A bolt shaft coupled with the motor driving unit;

A bolt pipe shaft coupled to the bolt shaft;

A nut rod coupled to the bolt pipe shaft;

And an outer column surrounding the nut rod from the outside,

When the motor is rotated by the motor driving unit, the bolt shaft is rotated. When the bolt shaft rotates, the bolt pipe shaft rotates and the bolt pipe shaft rotates to move the nut rod. Discloses a device for adjusting the height of a desk.

Here, the motor driving unit comprises a motor and a motor power transmitting unit.

The motor power transmission unit is formed of a worm gear at a front portion of the motor and coupled to one end of the motor power transmission unit, and the other end of the motor power transmission unit is coupled to the bolt shaft.

Further, a fixing cap may be provided outside the bolt shaft, and the fixing cap may include a nut inside the fixing cap to move the fixing cap when the bolt shaft rotates.

The upper end of the bolt pipe shaft is coupled with the fixed cap to prevent rotation of the bolt pipe shaft when the bolt shaft rotates.

Further, a lower end of the bolt shaft constitutes a power transmitting sliding portion for connecting with the bolt pipe shaft.

In addition, the power transmitting sliding portion is formed in a sawtooth shape, and the inside of the bolt pipe shaft has a sawtooth space portion in which the power transmitting sliding portion is inserted and coupled.

Preferably, the inner pillar further comprises an inner pillar.

Wherein the inner pillars comprise first and second inner pillars.

Further, the upper part of the inner column and the fixed cap are engaged.

Here, the fixture is constructed so that the nut rod does not rotate.

And the fixture is connected to the lower end of the nut by a finishing cap and a lower fixing bolt.

More preferably, the first and second inner pillars are configured to have anti-shake portions at the upper and lower portions thereof to minimize the shaking at the time of the fall of the book.

The second is to speed up and down by 2 times speed by the same motor capacity.

It can be ascended and descended at a high speed, thereby reducing noise.

FIG. 1 is an explanatory view of a motor driving unit. FIG.
Figure 2 is a view of an external column.
FIG. 3 is a view showing a connection and configuration of a bolt axis and a bolt pipe axis; FIG.
FIG. 4 is a view showing the configuration of a nut rod. FIG.
FIG. 5 is a view showing a configuration for a first inner column and a second inner column; FIG.
FIG. 6 is a combined view of FIGS. 1 to 5; FIG.

First, FIG. 6, which shows the overall configuration, will be described below.

A motor driving unit 100;

A bolt shaft 300 coupled with the motor driving unit;

A bolt pipe shaft 400 coupled to the bolt shaft;

A nut rod 500 coupled to the bolt pipe shaft;

And an outer pillar (200) surrounding the nut rod from the outside,

When the motor 140 is rotated in the motor driving unit 100, the bolt shaft 300 is rotated. When the bolt shaft 300 rotates, the bolt pipe shaft 400 rotates and the bolt pipe shaft 400 rotates, And rotating the nut rod 500 to adjust the height of the desk by means of ascending and descending at a speed twice as fast as the same motor speed.

The motor driving unit 100 will be described in detail with reference to FIG.

The motor driving unit 100 includes a motor 140 and a motor power transmitting unit 160 and is configured with a vibration preventing cushion pad 120 to cover the motor with the upper cover 110 and to reduce vibrations during ascending and descending And the motor power transmission unit 160 constitutes a worm gear of the motor 140 to transmit the power to the bolt shaft 300. The motor spindle 141 and the motor The convex portion of the sawtooth shape 161 is formed so that the convex portion 162 of the power transmission portion is engaged and the power is transmitted to the bolt shaft and the upper portion of the bolt shaft is also formed as the concave- A first rotating and swinging support member 190 is formed so as not to be shaken during the ascending and descending of the bolt shaft, and the fixing cover 180 is fixed to the outer pillar 200 As shown in Fig.

2 will be described below.

A bolt axis 300, a bolt pipe axis 400, a first inner column 600, and a second inner column 700.

3 will be described below.

A fixing cap 310 is disposed outside the bolt shaft. The fixing cap 310 is formed of a nut in the fixing cap. When the bolt shaft 300 rotates, the fixing cap 310 moves through the screw in the center of the fixing cap 310.

When the motor rotates, the bolt shaft is rotated and the sawtooth power transmission sliding portion 320 is coupled to the bolt shaft 300 with the fixing bolt 330 so as to transmit the power to the bolt pipe shaft 400, So that the power transmission sliding portion 320 is coupled to the pipe of the motor 400 so that the power transmission sliding portion 320 can move freely, but the power is transmitted to the bolt pipe shaft 400 during rotation. Accordingly, when the bolt shaft 300 rotates, the bolt pipe shaft 400 is simultaneously rotated by the power transmission sliding portion 320.

The upper end 340 of the bolt pipe shaft is coupled with the fixed cap 310 so that when the bolt shaft 300 rotates, the bolt pipe shaft 400 is coupled together and rotated in the same direction.

And the second anti-shake portion 340 is engaged with the fixed cap 310.

The bolt pipe shaft 400 engages with the nut rod 500.

This will be described with reference to FIG.

The fasteners 510 and 730 are configured to prevent the nut rod 500 from rotating.

The sealing cap 510 is configured to seal the nut rod 500.

Next, Fig. 5 will be described.

The fastener is coupled to the lower end of the nut rod 500 by a finishing cap 510 and a lower fixing bolt 730.

This will be described with reference to FIG.

Also, as described above, the inner pillars 600 and 700 are further formed inside the outer pillars.

The inner pillars are made up of first and second inner pillars (600, 700)

And the fourth anti-shake portion 610, which is the upper portion of the inner column, and the fixing cap 310 of FIG. 3 are combined.

A fifth anti-shake portion 710 is formed on the upper portion of the fourth inner anti-shake portion 610, the lower first anti-shake sliding portion 620, and the second inner pillar 700, And a second anti-shake sliding portion 720 is formed at a lower portion thereof to facilitate movement during ascending / descending due to the motor and absorb vibration.

This will be described with reference to FIG.

From the innermost position of the external column 200, the following description will be given.

A nut rod 500 having a bolt axis 400 for inserting the bolt axis 300 and a bolt pipe axis 400 for enclosing the bolt axis 300 and a bolt pipe axis 400, An inner pillar 700, a first inner pillar 600 for inserting the second inner pillar, and a first inner pillar 600 are arranged in the order that the outer pillar 200 surrounds the first inner pillar.

When the motor 140 rotates and rises, the bolt shaft 300 rotates and receives the power of the rotation so that the bolt pipe shaft 400 rotates and the bolt pipe shaft rotates in the nut rod 500, And the upper end of the fourth anti-shake portion 610 are coupled with each other, so that the outer pillars 200 are raised while pushing up. Then the rotation takes place in the bolt axis, the bolt pipe axis and the nut rod, and it rises twice as fast by the same motor speed due to the same effect as twice rotation in one rotation. When the desk is lowered by rotating the motor, it is also lowered twice as fast.

100: motor driving part 110: upper cover 120: anti-shake cushion pad 130:
140: motor 141: recess of motor 142: worm gear 150: retaining snap ring
160: Motor power transmission part 161: serrated irregular part 162: convex part of motor power transmission part 170: fixing bolt 180: fixed lid 190: first shake prevention part
200: Outside pillar
300: bolt shaft 310: fixed cap 320: power transmission sliding portion 330: fixing bolt
340: Second anti-shake part
400: Bolt pipe axis 410: Third anti-shake part
500: nut rod 510: finishing cap
600: first inner pillar 610: fourth anti-shake portion 620: first anti-shake sliding ring
700: second inner pillar 710: fifth anti-shake portion 720: second anti-shake sliding ring
730: Lower fixing bolt

Claims

A motor driver;
A bolt shaft coupled with the motor driving unit;
A bolt pipe shaft coupled to the bolt shaft;
A lower end of the bolt shaft is connected to the bolt pipe shaft;
A nut rod coupled to the bolt pipe shaft;
And an outer column surrounding the nut rod from the outside,
When the motor is rotated by the motor driving unit, the bolt shaft is rotated. When the bolt shaft rotates, the bolt pipe shaft rotates and the bolt pipe shaft rotates to move the nut rod. The height of the desk is adjusted.

The apparatus according to claim 1, wherein the motor driving unit includes a motor and a motor power transmitting unit.

The motor control apparatus according to claim 2, wherein the motor power transmission unit is formed of a worm gear at a front portion of the motor and coupled to one end of the motor power transmission unit, and the other end of the motor power transmission unit is coupled to the bolt shaft. Device.

The desk height adjusting device according to claim 1, wherein a fixing cap is provided on the outside of the bolt shaft, and the fixing cap is formed of a nut inside the fixing cap so that the fixing cap is moved when the bolt shaft rotates.

The desk height adjusting apparatus according to claim 4, wherein the bolt pipe shaft is coupled to the upper end of the bolt pipe shaft to prevent rotation of the bolt pipe shaft when the bolt shaft rotates.

delete

The apparatus according to claim 1, wherein the power transmitting sliding portion is formed in a sawtooth shape, and the inside of the bolt pipe shaft has a serration space portion for inserting and coupling the power transmitting sliding portion.

The desk height adjusting apparatus according to claim 1, further comprising internal pillars inside the external pillars.

9. The desk height adjusting apparatus according to claim 8, wherein the inner pillars comprise first and second inner pillars.

The desk height adjusting apparatus according to claim 8, wherein the upper portion of the inner post is coupled to the fixed cap.

The desk height adjusting device according to claim 1, wherein the fixing rod is configured not to rotate the nut rod.

The desk height adjusting apparatus according to claim 11, wherein the fixture is coupled to the lower end of the nut rod by a finishing cap and a lower fixing bolt.

The desk height adjusting device according to claim 9, wherein the first and second inner pillars are formed with upper and lower shake preventing portions.