KR100983792B1

KR100983792B1 - Apparatus for adjusting height of desk

Info

Publication number: KR100983792B1
Application number: KR1020100013267A
Authority: KR
Inventors: 김정태
Original assignee: 주식회사 야흥금속
Priority date: 2010-02-12
Filing date: 2010-02-12
Publication date: 2010-09-27

Abstract

PURPOSE: A desk height controlling device is provided, which makes safe and economic maintenance possible and allows convenient use due to simple handle operation. CONSTITUTION: A desk height controlling device comprises: a belt cover(10) which is securely jointed and fixed through both sides which mutually responds in the bottom surface of the edge of a desk; a pair of ball screws(30) in which a screw is formed in the outer circumference and which is axis-supported by a bearing to be rotated; a power transmission(40) consisting of gear pulley and a belt interlinking gear pulleys; a screw cover(50) fixed to the bottom surface of the belt cover; a fixed support(60) in which a ball screw is screwed in a screwnut; and a manipulating handle(90) of a disc shape.

Description

{Apparatus for adjusting height of desk}

The present invention relates to a desk height adjusting device, and more particularly, a desk that allows the user to comfortably use the desk at an optimal height by allowing the user to freely adjust the height of the desk by a simple handle operation directly under the desk top plate. It relates to a height adjuster.

In general, the desk is different in shape and size depending on the purpose of use, but there are various heights depending on the people who use it.

These desks are produced in a variety of sizes and heights depending on the user, but unlike individual use, it is almost impossible to equip according to the size of the body when used in a large number of organizations such as public institutions and schools.

Therefore, the student desk is to be produced in several sizes based on the average height of the students, while the general desk is to be produced at a constant height based on the average size of the public.

In other words, the desk provided by the group is made to fit the average height of the average person regardless of the physical condition of the user, so that the physical condition is too small or large than the average, or the user with a disability who is uncomfortable. It is a reality that there is considerable discomfort because it is not correct.

When the desk does not fit the physical conditions for a long time, the user's posture is incorrect, there is a problem that the back is bent or accompanied by physical deformation and pain, such as shoulders.

To this end, various configurations for adjusting the height of the desk have been proposed, some of which are applied in the field, but there is still a problem that the height adjustment is inconvenient, often broken or damaged.

On the other hand, patent registration No. 0632745 (name: desk for the disabled with adjustable height of the desk) and the original application No. 2010-3514 (name: desk height adjustment device) of the present applicant is a plurality of screws rotatably to the bottom of the table top It was also proposed to have a configuration that allows the chain between the sprocket is fixed to each screw by a chain and then rotate the chain by a forward and reverse motor or manual operation.

However, there is a problem of considerable cost because the lifting of the top of the bookshelf is performed by electric motor driving as in the prior patent registration, and in the patent of the applicant, the lifting of the top of the bookshelf is performed at the bottom of the bookshelf. There is a problem that there is a limit to the generalization of the inconvenience.

In order to solve the above problems, the present invention has a main object to provide a desk height adjustment device that can be used more conveniently by a simple handle operation by having a lifting operation structure is provided directly below the upper plate of the desk.

It is another object of the present invention to provide a desk height adjustment device that enables safer and more economical maintenance by allowing components for lifting operation and operation to be protected from the outside.

To achieve the above object, the present invention provides a desk height adjusting device, which has a channel shape upwardly open, and a belt cover that is firmly fastened and fixed to both sides corresponding to each other at the bottom of the desk top plate; A pair of ball screws that are axially rotatably supported by bearings to penetrate both bottom surfaces of the belt cover and have a screw formed on an outer circumferential surface thereof; A power transmission unit comprising a gear pulley made of a spur gear that is axially fixed to an upper end of the ball screw provided inside the belt cover and a belt connecting the gear pulleys; A cylindrical screw cover coupled to an upper end of the belt cover to cover the outside of the ball screw; The upper part is vertically installed from the pedestal which is provided to contact the ground on both sides, and the upper part is liftably inserted into the inside of the screw cover, and the nut is inserted into the upper end so that the ball screw is screwed to the nut. A fixed column of shape; A disk-shaped operation handle which is axially fixed to an upper end of one side ball screw inside the belt cover, and allows a part of the main surface to protrude outwardly of the belt cover to allow manual rotation from the outside; The belt cover allows both upper ends to be horizontally bent to the outside so that the horizontal bending surface is fixed to the bottom surface of the upper plate and fixedly fastened, and the bearing is attached to the bottom surface of the belt cover, and in the direction of rotating the operation handle. Therefore, the ball screw is rotated by the power transmission unit is moved up and down, and the desk top plate is characterized in that the configuration is made up, down.

According to the above-described configuration, the present invention allows the top plate of the desk to be easily adjusted to a height suitable for his / her body size by simple manual operation of the handle while allowing the driving part to be safely protected from the outside. The deformation and discomfort of the can be eliminated.

1 is a perspective view showing an embodiment of a desk height adjusting device according to the present invention;
2 is an exploded perspective view of FIG. 1;
3 is a front sectional view of the desk height adjusting device according to the present invention;
Figure 4 is a cross-sectional view showing a power transmission structure of the desk height adjusting device according to the present invention,
Figure 5 is a side cross-sectional view showing another embodiment of the desk height adjustment device according to the present invention,
Figure 6 is an operating state of the desk height adjustment device according to the invention.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention according to the above configuration as follows.

1 is a perspective view showing an embodiment of a desk height adjustment device according to the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a front sectional view of the height adjustment device of the bookshelf according to the present invention.

As shown, the desk height adjusting device of the present invention includes a belt cover 10, a ball screw 30, a power transmission unit 40, a screw cover 50, a fixed support 60, and an operation handle 90. It is a configuration consisting of a combination.

The belt cover 10 of the present invention is open upward, the upper ends of both sides are horizontally bent to the outside to be in close contact with the desk top plate 70 while being firmly fastened by screws or the like, the desk top plate 70 It is a channel-shaped structure provided with the length to both sides.

The ball screw 30 of the present invention is a vertical rod-shaped member formed with a screw on the outer peripheral surface, the ball screw 30 is provided in pairs on each side of the belt cover 10, the bottom surface of the belt cover 10 The shaft is configured to be rotatably fixed to the bearing 20 attached to the bottom of the bottom surface.

Therefore, the ball screw 30 axially fixed to the bearing 20 attached to the belt cover 10 is a part is located inside the belt cover 10, most of the configuration is located below the belt cover 10 .

Figure 4 is a cross-sectional view showing a power transmission structure of the desk height adjustment device according to the present invention.

The power transmission part 40 includes a pair of gear pulleys 41 axially fixed to upper ends of the ball screws 30 provided inside the belt cover 10 and belts connecting the gear pulleys 41 with each other. 42).

At this time, the gear pulley 41 uses spur gears of the same diameter for both ball screws 30, and each gear pulley 41 is to be firmly fixed to the ball screw (30).

The belt 42 is configured to connect the gear pulleys 41 on both sides to interlock, and the belt 42 at this time allows the gears to be uniformly formed on the inner circumferential surface so as to be engaged with the gears formed on the gear pulleys 41.

The screw cover 50 of this invention is a protective cover provided in cylindrical shape, Comprising: It is comprised so that each ball screw 30 of both sides may be covered from an exterior.

Accordingly, the screw cover 50 allows the upper end portion to be fixed to the bottom surface of the bottom surface of the belt cover 10 by welding or screw fastening.

And the fixed strut 60 of the present invention is configured to be vertically upright from the pedestal 80 provided to contact the ground on each side.

That is, the fixed support 60 is fixed to the upper end of the upper end of the pedestal 80 integrally by welding, and the upper end of the ball screw 30 from the upper end to the inside while allowing the upper and lower sides to be inserted into the inside of the screw cover 50. ) Is inserted.

However, the nut 61 is inserted into the upper end of the fixed support 60 so that the ball screw 30 is inserted while being screwed to the nut 61.

Meanwhile, the operation handle 90 of the present invention is configured to be axially fixed to the upper end of the ball screw 30 on one side among the ball screws 30 provided on both sides, and a part of the main surface of the main surface is formed to have a disk shape. 10) is configured to be protruded to the outside so as to be manually rotated from the outside.

Therefore, it is more preferable that the operation handle 90 forms a knurling on the outer circumferential surface or the upper and lower plate surfaces so that the operation handle 90 is partially exposed to the outside of the belt cover 10 so as to be easily rotated by manual operation.

Figure 5 is a side cross-sectional view showing another embodiment of the desk height adjustment device according to the present invention, one of the desk height adjustment device of the present invention, the ball screw 30 and the screw cover 50 and the fixed support 60 and It is also possible to apply it to a chair using the operation handle 90.

Referring to the accompanying drawings the height adjustment process of the desk using the desk height adjustment device of the present invention as described above in more detail as follows.

6 illustrates a structure of elevating the desk top plate 70 by applying the height adjusting device according to the present invention. As illustrated, the desk height adjusting device of the present invention is adapted to fit the body shape of the desk top plate 70. It is to be able to lift.

This height adjustment is made by rotating the right disk-shaped operation handle 90 is provided with a portion protruding to one side of the bottom surface of the top plate (70).

When the operation handle 90 is rotated in one direction, the ball screw 30 on one side that fixes the operation handle 90 is rotated at the same time. At this time, the ball screw 30 is lowered from the bottom of the operation handle 90. At the same time, the gear pulley 41 fixed to the shaft rotates, and by the rotation of the gear pulley 41 on one side, the other gear pulley 41 connected to each other by the belt 42 also rotates at the same time. Let's do it.

On the other hand, since the ball screws 30 on both sides are fixed to the bearing 20 at the bottom surface of the belt cover 10, the ball screws 30 can be easily rotated even by a simple operation of rotating the operation handle 90. have.

As such, when the ball screw 30 on both sides is rotated at the same time, the ball screw 30 is screwed to the fixed support 60 at the bottom thereof, so that the base 80 and the fixed support 60 fixed to the ground are fixed. As a result, the ball screw 30 is elevated.

When the ball screw 30 is rotated at the same time to rise, the belt cover 10 integrally connected with the ball screw 30 and the desk top plate 70 to which the belt cover 10 is connected are simultaneously raised.

Thus, the ball screw 30 is rotated by the power transmission unit 40 in accordance with the direction to rotate the operation handle 90 is moved up and down, the desk top plate 70 is also raised or lowered.

Therefore, when the user has a desk height higher than his or her body, the operation handle 90 is rotated by the required height to lower the desk top plate 70 to its own height. On the contrary, when the desk height is too low, the operation handle 90 is moved. The counter top plate 70 may be rotated to rise to match its height.

On the other hand, the power transmission unit 40 is accommodated in the interior of the belt cover 10 coupled to the bottom surface of the desk top plate 70 so as to be safely protected from the outside to enable safe maintenance.

In addition, the ball screw 30 is also to be covered to be protected from the outside by the screw cover 50 and the fixed strut 60, so that more secure maintenance.

10: belt cover
20: bearing
30: ball screw
40: power transmission unit
41: gear pulley
42: belt
50: screw cover
60: fixed shore
61: Nut
70: desk top
80: pedestal
90: operation handle

Claims

A belt cover having an upwardly open channel shape, which is securely fastened and fixed to both sides corresponding to each other at the bottom of the desk top plate;
A pair of ball screws that are axially rotatably supported by bearings to penetrate both bottom surfaces of the belt cover and have a screw formed on an outer circumferential surface thereof;
A power transmission unit comprising a gear pulley made of a spur gear that is axially fixed to an 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 fixed to the bottom of the belt cover by welding to cover the outside of the ball screw;
In the upper center of the pedestal provided to contact the ground on each side, the lower end is fixed vertically integrally by welding, and the upper part is inserted into the screw cover so that it can be lifted and the upper end is inserted into the nut so that the nut is inserted into the nut. A tubular fixing column for screwing the ball screw;
A disk-shaped operation handle which is axially fixed to an upper end of one side ball screw inside the belt cover, and allows a part of the main surface to protrude outwardly of the belt cover to allow manual rotation from the outside;
The belt cover allows both upper ends to be horizontally bent to the outside so that the horizontal bending surface is fixed to the bottom surface of the upper plate and fixedly fastened, and the bearing is attached to the bottom surface of the belt cover, and in the direction of rotating the operation handle. Accordingly, the desk height adjustment device, characterized in that the ball screw is rotated by the power transmission unit is moved up and down, the desk top plate is raised, lowered.

delete