KR101631108B1

KR101631108B1 - The height control desk

Info

Publication number: KR101631108B1
Application number: KR1020150175113A
Authority: KR
Inventors: 이정기
Original assignee: 이정기
Priority date: 2015-12-09
Filing date: 2015-12-09
Publication date: 2016-06-16

Abstract

The present invention relates to a height-adjustable desk and, more specifically, to a height-adjustable desk which minimizes movement generated during an ascending and descending process. The height-adjustable desk comprises: a pair of height adjusting posts which are lifted up and down by screws rotated by a motor; one or more horizontal frames which horizontally extend the top ends of the height adjusting posts; and an upper plate which is installed on the top surface of the horizontal frames.

Description

Electric height adjustment desk {The height control desk}

[0001] The present invention relates to an electric height adjusting desk, and more particularly, to an electric height adjusting desk which is designed to minimize a flow generated during a lifting and lowering process while allowing a height of a desk to be controlled by a built- .

In the everyday life, students and workers have been sitting on chairs for more than half of the day, and the number of people using sofas for their meals is increasing.

However, sitting for a long time causes blood vessels, spine and knees to break, and people who sit for a long time are more likely to be exposed to various diseases such as varicose veins, cardiovascular disease, and metabolic syndrome.

In particular, the number one cause of death in Korea is cancer, but cardiovascular disease, cerebrovascular disease, and diabetes that can be caused by long-term sitting occupy the second, third, and fifth places, respectively, It can be guessed.

In the Nordic countries, which are paying a great deal of attention to health, the culture of standing and working is gradually spreading, and the culture of standing and working in domestic companies is gradually beginning to spread.

When working in such a standing position, the movement of the body becomes much more active and the blood circulation improves, thereby preventing various metabolic syndromes, increasing the efficiency of work, reducing the burden on the vertebrae, which are frequently crushed during sitting, It is known that the tension is reduced and vascular endothelial cell function is activated to prevent cardiovascular diseases.

However, it is desirable that many people who are actually standing and working do not stand all day, but sit down and take into account their physical condition, and there is a need for a desk that can easily adjust the height of the desk.

In addition, it is necessary to develop a height control desk which prevents noise and noise from moving up and down due to height adjustment.

Korean Patent Registration No. 10-0632745-0000 (September 29, 2006) Korean Patent Registration No. 10-0983792-0000 (September 16, 2010) Korean Patent Registration No. 10-1453054-0000 (October 14, 2014) Korean Patent Registration No. 10-1511352-0000 (April 01, 2015) Korean Patent Publication No. 10-2015-0101797 (September 04, 2015)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and an object of the present invention is to provide a space between a post inserted in a desk, in which a screw rotated by a motor is built in a leg, In order to reduce the flow due to the clearance generated in the motorized height adjusting desk.

Another object of the present invention is to develop an electric height adjusting desk which can quickly reach the desired height of the desk top.

In order to achieve the above object, according to the present invention, there is provided a supporting member which is mounted at a lower end in a longitudinal direction and which has a small diameter inserted into a large diameter, A height adjustment post, at least one horizontal frame extending horizontally at an upper end of the height adjustment post, and an upper plate mounted on an upper surface of the horizontal frame,

The height adjusting post includes a motor box having a power transmitting boss which is rotated by a built-in motor and extends to a vertical lower portion to form a non-circular groove;
A power transmission shaft formed in a disc shape and protruding at the center of an upper surface thereof to be inserted into a groove of the power transmission boss and rotating and having a circular pipe shape and having a power transmission shaft fixedly mounted on an upper end thereof, And a first nut having a first thread formed on an inner circumferential surface of the rotary cylinder and having an upper inner circumferential surface extended in a stepwise manner so that a lower end of the rotary cylinder is inserted and fixed, A first post fixed to a bottom surface of the motor box and having a first nut housing fixedly mounted on a lower end thereof;
A second post having an upper portion opened and having a first through-hole inserted therein and a lower portion formed with a screw hole penetrating through the center thereof;
And a fixing pin which is inserted into the outer circumferential surface after passing through the guide slot and then protruded to the outer circumferential surface to be passed through the other guide slot, And a lower end of the guide bushing is inserted into a groove which is reduced in the outer diameter of the lower portion of the guide bushing and then expanded so that the outer diameter of the guide bushing is reduced downward, A hollow screw mounted on a lower end thereof and fixed by three to four fixing bolts along an outer peripheral surface thereof and having a second threaded portion formed on an inner peripheral surface thereof;
A third post having an upper portion open to insert the second post and a lower portion closed;
A guide roller having an outer diameter corresponding to a hollow inner diameter of the upper outer circumferential surface, and a second detent ring extending outwardly after the outer diameter of the guide roller is reduced to fix the guide roller, And a lower end of which is fixed to an inner bottom surface of the third post;
The horizontal frame has a rectangular pipe shape having the same shape and has four horizontal bars fixedly mounted on the front and back surfaces of the two motor boxes and a pair of guide bars into which both ends are inserted into both horizontal bars located on the front or rear side, And a horizontal bracket whose one side is fixed to the outside of the pair of motor boxes and whose upper ends are horizontally bent.

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In addition, a compression coil spring is installed inside the rotary cylinder to have an elastic restoring force when the hollow screw, which is engaged with the first nut housing, rises.

As described above, according to the present invention, since the force generated in the process of ascending and descending a desk post is present between the lower and upper posts and the resistance generated by the force of the motor box acting on the screw, There is an effect of preventing the occurrence of the problem.

In addition, the three-stage configuration of the first to third posts allows the two screws to be rotated in one rotation by the screw and the hollow screw, so that the two posts are rotated up and down at twice the speed So that the desired height can be reached quickly.

Figure 1 is a perspective view of an embodiment of the present invention.
2 is an exploded perspective view according to an embodiment of the present invention.
3 is a side sectional view showing a folded state according to an embodiment of the present invention;
FIG. 4 is a side sectional view showing an unfolded state according to an embodiment of the present invention. FIG.
5 is a cross-sectional view
6 is a plan view showing a state of reducing a width according to an embodiment of the present invention.
Fig. 7 is a perspective view of a first enlarged embodiment of the present invention. Fig.
8 is an exploded perspective view of the post according to the second enlarged embodiment of the present invention.
9 is a side sectional view showing a folded state of the post according to the second enlarged embodiment of the present invention
10 is a side sectional view showing a state in which the post is unfolded according to the second enlarged embodiment of the present invention
11 is an exploded perspective view of the post according to the third enlarged embodiment of the present invention
12 is a side sectional view showing a state in which the post is unfolded according to the third enlarged embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a side cross-sectional view illustrating a folded state according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of the folded state according to the present invention. Is a side cross-sectional view showing an expanded state according to an embodiment of the present invention. The support member 171 is attached to a lower end of the support member 171 in a forward and backward direction and inserted into a large- A pair of height adjusting posts 1 which are lifted and lowered by screws, at least one horizontal frame 2 horizontally extending the upper end of the height adjusting posts 1, And an upper plate (3) provided on the upper surface of the upper plate (3).

The height regulating post (1) includes a motor box (11) having a power transmitting boss (111) which is rotated by a built-in motor and extends to a vertical lower portion to form a non-circular groove; A lower post 17 fixed to the upper center of the upper surface of the receiving member 171 having a trapezoidal cross section whose lower left and right length is longer than the upper left and right length and having a rectangular pipe shape and elongated vertically; And a lower end fixed to the center of the inner bottom surface of the lower post 17 and formed with a fixing protrusion 181 which is recessed toward the inner side from a facing outer surface of the upper end, A guide post 18 to which a nut housing 184 having a threaded hole 182 with a lower portion with a rectangular cross section and inserted and fixed with a fixing groove 183 corresponding to the fixing protrusion 181 is mounted and fixed; The upper end is inserted into the non-circular groove of the power transmission boss 111 and rotates. A screw thread corresponding to the screw hole 182 is formed on the outer diameter. The lower end of the screw hole is reduced in outer diameter, The outer diameter of the guide post 18 is equal to the width of the inner surface of the guide post 18 and the inner diameter of the upper end and the lower end of the guide post 18 are reduced stepwise to be rotatable by the shaft bolt 165 to the roller 164, A fixed screw 16; An upper end fixed to the motor box (11) and a lower end made up of an upper post (19) inserted into the lower post (17);

The horizontal frame 2 has a rectangular pipe shape having the same shape and has four horizontal bars 21 fixedly mounted on the front and back sides of the two motor boxes 11 and two horizontal bars 21 And a horizontal bracket 23 whose one end is fixed to the outside of the pair of motor boxes 11 and whose upper ends are horizontally bent. A control desk.

The present invention has a basic feature in that a frame constituting each basic frame has a rectangular pipe shape instead of a circular shape, and a surface and a surface are closely fixed to each other in a combination of the respective components, thereby stably fixing the frame.

The lower posts 17 and the upper posts 19 may have a rectangular cross section so that the lower posts 17 and the upper posts 19 may have a rectangular cross section when any one of the engaging portions of the lower posts 17 and the receiving members 171 has a circular cross- The upper and lower posts 19 and 19 are not inserted in all directions but are formed only in the front and rear direction and in the left and right direction. In the state where the upper post 19 is inserted a lot, Is minimized.

The connection between the motor box 11 fixed to the upper end of the height adjusting post 1 and the horizontal frame 2 is a rigid structure in which the horizontal bar 21 and the horizontal bracket 23 are fixed in a grid- So that a more rigid fixing can be achieved.

In this embodiment, the nut housing 184 is firmly fixed to the upper portion of the guide post 18, and the upper post 19 is raised as the screw 16 rotates.

At this time, the lower end of the ascending screw 16 is provided with a bearing 163 for facilitating the rotation, and a cylindrical roller 164 is provided so as to minimize frictional force when vertically ascending, The outer surface of the roller 164 is configured to be in close contact with the inside of the guide post 18 in order to reduce line noise.

In the present invention, it is preferable that the lower supporting member 171 is made of aluminum to reduce the occurrence of clearance due to use in the coupling portion by thickening the lower supporting member 171 while reducing the desk rattling of the desk. Materials such as Teflon and acetal (POM) having excellent abrasion resistance are generally used, but it is preferable to use a special resin to satisfy the strength and self-lubrication function so as to meet the characteristics of the present invention.

FIG. 5 is a plan view according to an embodiment of the present invention. FIG. 6 is a plan view illustrating a state of reducing a width according to an embodiment of the present invention. And can be expanded or contracted.

At this time, a first through hole 211 is formed on the opposite side of the horizontal bar 21 which is tightly fixed to the motor box 11, and the first through hole 211 is in close contact with the motor box 11 on the extension of the first through hole 211 A second through hole 212 having a diameter smaller than that of the first through hole 211 and forming a thread on the inner circumferential surface is formed on the surface of the second through hole 212. After passing through the first through hole 211, And a lenticular bolt 213 which is fixed to the motor box 11 together with the lenticular bolt 213. As shown in Fig.

In this embodiment, the method of fixing the motor box 11 and the horizontal bar 21 when the guide bar 22 is inserted is formed by fastening by a bolt, not by welding, so that the product can be easily assembled, It is possible to prevent the occurrence of defective parts and appearance of dirty parts.

At this time, the wrench bolt 213 may prevent the guide bar 22 from being further inserted, so that the head of the wrench bolt 213 may not protrude to the inside of the horizontal bar 21.

FIG. 7 is a perspective view of a first enlarged embodiment of the present invention. FIG. 7 is a perspective view of a desk according to an embodiment of the present invention, which includes a motor box 11 requiring external power, It is preferable to place the socket 172 on the front surface or the bottom surface of the lower post 17 to minimize the damage to the appearance.

FIG. 9 is a side sectional view showing a folded state of the post according to the second enlarged embodiment of the present invention, and FIG. 10 is a cross- The height regulating post 1 is provided with a power transmitting boss 111 which is rotated by a built-in motor and extends to a vertical lower portion to form a non-circular groove, A motor box 11;

A power transmission shaft 121 formed in a disk shape and protruding at the center of an upper surface thereof to be inserted into the groove of the power transmission boss 111 and rotating, a power transmission shaft 121 fixedly mounted on the upper end thereof, A rotary cylinder 123 having a pair of guide slots 122 that are longly cut from the bottom to the top, a fixing pin 124 passing through the pair of guide slots 122, And a first nut housing 126 in which a lower end of the rotary cylinder 123 is inserted and seated and a first screw thread 125 is formed on an inner circumferential surface of the rotary nut 123. The upper end is fixed to the bottom surface of the motor box 11, A first post 12 to which the first nut housing 126 is fixedly mounted;

And a second post (13) having an upper portion thereof opened and having a first through-hole (12) inserted therein and a lower portion thereof closed and a screw through-hole (131)

A hollow 141 is formed on the outer circumferential surface of which a thread corresponding to the first screw thread 125 is formed and the fixing pin 124 is inserted into the upper end through a guide slot 122, And a fixing pin insertion hole 142 formed to protrude through the other guide slot 122. The lower end of the fixing pin insertion hole 142 passes through the screw through hole 131, A first detent ring 144 which is inserted into an extended groove of the lower portion of the guide bushing 143 to fix the guide bushing 143 and which is mounted on the lower end of the guide bushing 143, A hollow screw 14 to which a second nut housing 147 is fixed by four fixing bolts 145 and has a second screw thread 146 formed on an inner circumferential surface thereof;

A third post (15) having an open top and a second closed bottom (13);

A guide roller 161 having an outer diameter corresponding to the inner diameter of the hollow 141 after being curved in a stepwise manner, a second detent ring 162 for expanding the outer diameter of the guide roller 161, And a screw (16) having an outer peripheral surface formed with a thread corresponding to the second thread (146) and a lower end fixed to an inner bottom surface of the third post (15) Respectively.

The present invention basically includes three posts. When the motor box 11 is driven to adjust the height, the post moves up or down completely. However, when one post is completely raised or lowered, So that the post 12 and the second post 13, the second post 12 and the third post 15 are simultaneously inserted or withdrawn.

This structure is advantageous in that even if a screw having the same pitch as the motor rotating in the same direction is applied, it can be lifted and lowered at a speed twice as fast as it is operated in a stepwise manner.

In a specific operation of the present invention, when the internal motor of the motor box 11 is driven in a folded state, the rotational force is transmitted from the power transmitting boss 111 to the power transmitting shaft 121, The cylinder 123 rotates and the hollow screw 14 is also rotated by the fixing pin 124. [

The rotation of the hollow screw 14 is performed by the first nut housing 126 which is screwed to move the hollow screw 14 relative to the guide slot 122 along the path of the guide slot 122, The bottom of the stepped portion is rotated by the guide bushing 143 and the first stop ring 144 after passing through the second post 13, but the up and down movement has a structure in which the second post 13 moves together .

The rotation of the hollow screw 14 is not rotated and the fixed screw 11 is relatively moved up and down by the rotation of the second nut housing 147 fixed to the hollow screw 14, 13 and the third post 15 are changed.

At this time, the guide roller 161 is installed to prevent the upper end of the guide roller 161, which is located relatively away from the second nut housing 147 coupled with the screw 11, from flowing in the cavity of the hollow 141.

The structure of the present invention has the effect that the height can be adjusted at a speed higher than that of one screw due to the combination of the two screws, that is, the hollow screw 14 and the screw 16, while using the screw capable of smooth and silent movement will be.

FIG. 11 is an exploded perspective view of a post according to a third enlarged embodiment of the present invention, FIG. 12 is a side sectional view showing a state in which a post according to a third enlarged embodiment of the present invention is unfolded, A compression coil spring 127 having an elastic restoring force is incorporated when the hollow screw 14 engaged with the first nut housing 126 rises.

In the above-described embodiment, it is inevitable that a large load is generated in the motor due to its own load in the height increasing direction. However, since the elastic compression force is applied to the inner compression spring 127 to reduce the load acting on the motor .

In addition, the coupling by the thread has a certain clearance between the threads of the outer diameter thread and the inner diameter thread to rotate, and if there is no clearance, the load due to the rotation due to the tightness is increased or the rotation is impossible.

In this state, the upper part of the height adjusting post 1 is entirely in a state where the upper part of the height adjusting post 1 is in a state where the upper part of the height adjusting post 1 is in a state of low flow, In particular, during the up and down movement, back rush phenomenon causes mechanical disadvantages such as noise and flow.

However, the compression coil spring 127 serves to continuously apply the pressure, thereby reducing the flow.

1: height adjustment post
11: Motor box
111: Power transmission boss
12: First post
121: Power transmission shaft 122: Guide slot
123: rotation cylinder 124: fixing pin
125: first thread 126: first nut housing
127: compression coil spring
13: Second post
131: Screw through hole
14: Hollow screw
141: Hollow 142: Fixing pin insertion hole
143: guide bushing 144: first stop ring
145: Fixing bolt 146: Second thread
147: Second nut housing
15: Third Post
16: Screw
161: guide roller 162: second stop ring
163: Bearings 164: Rollers
165: Axial bolt
17: Lower post
171: Support member 172: Power connection socket
18: Guide post
181: Fixing projection 182: Screw hole
183: Fixing hole 184: Nut housing
19: Upper post
2: Horizontal frame
21: Horizontal bar
211: first through hole 212: second through hole
213: Lenght Bolt
22: Guide bar
23: Horizontal bracket
3: Top plate

Claims

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A pair of height adjusting posts (1) mounted on a lower end thereof with a receiving member (171) extending in the forward and backward direction and being mounted by a screw rotated by a motor in such a manner that a small diameter is inserted into a large diameter, And a top plate (3) mounted on an upper surface of the horizontal frame (2), the desk comprising: at least one horizontal frame (2) extending horizontally at an upper end of the height adjusting post (1)
The height regulating post (1) includes a motor box (11) having a power transmitting boss (111) which is rotated by a built-in motor and extends to a vertical lower portion to form a non-circular groove;
A power transmission shaft 121 formed in a disk shape and protruding at the center of an upper surface thereof to be inserted into the groove of the power transmission boss 111 and rotating, a power transmission shaft 121 fixedly mounted on the upper end thereof, A rotary cylinder 123 having a pair of guide slots 122 that are longly cut from the bottom to the top, a fixing pin 124 passing through the pair of guide slots 122, And a first nut housing 126 in which a lower end of the rotary cylinder 123 is inserted and seated and a first screw thread 125 is formed on an inner circumferential surface of the rotary nut 123. The upper end is fixed to the bottom surface of the motor box 11, A first post 12 to which the first nut housing 126 is fixedly mounted;
And a second post (13) having an upper portion thereof opened and having a first through-hole (12) inserted therein and a lower portion thereof closed and a screw through-hole (131)
A hollow 141 is formed on the outer circumferential surface of which a thread corresponding to the first screw thread 125 is formed and the fixing pin 124 is inserted into the upper end through a guide slot 122, And a fixing pin insertion hole 142 formed to protrude through the other guide slot 122. The lower end of the fixing pin insertion hole 142 passes through the screw through hole 131, A first detent ring 144 which is inserted into an extended groove of the lower portion of the guide bushing 143 to fix the guide bushing 143 and which is mounted on the lower end of the guide bushing 143, A hollow screw 14 to which a second nut housing 147 is fixed by four fixing bolts 145 and has a second screw thread 146 formed on an inner circumferential surface thereof;
A third post (15) having an open top and a second closed bottom (13);
A guide roller 161 having an outer diameter corresponding to the inner diameter of the hollow 141 after being curved in a stepwise manner, a second detent ring 162 for expanding the outer diameter of the guide roller 161, And a screw (16) whose outer circumferential surface is formed with a thread corresponding to the second thread (146) and whose lower end is fixed to the inner bottom surface of the third post (15);
The horizontal frame 2 has a rectangular pipe shape having the same shape and has four horizontal bars 21 fixedly mounted on the front and back sides of the two motor boxes 11 and two horizontal bars 21 And a horizontal bracket 23 whose one end is fixed to the outside of the pair of motor boxes 11 and whose upper ends are horizontally bent. Adjustable desk.

The compressor according to claim 3, wherein a compression coil spring (127) is installed inside the rotating cylinder (123) to have an elastic restoring force when the hollow screw (14) engaged with the first nut housing Features electric height adjustment desk.