KR20080003591A - Height adjustable device for a desk - Google Patents

Abstract

A height adjusting device of a desk is provided to secure quick operation by locking/unlocking or fixing a support frame through a hanging pin and to prevent malfunction caused by vibration or shock. A height adjusting device of a desk(T) is composed of: a support frame(F) having upper and lower frames(F1,F2) fitted to slide in a vertical direction and supporting an upper plate(P) from the floor; a housing(2) positioned at the outer side of one of the upper and lower frames and provided with an inner space; a hanging plate(4) combined in the inner space of the housing through a hinge, turned about the hinge, and provided with hanging projections separably fitted into plural hanging grooves(G1) formed on one of two frames, and hung with coming into contact with the hanging groove; and a camshaft type locking unit having an eccentric projection, turning the hanging plate in order to fit or separate the hanging projection into/from the hanging groove by contact power of the eccentric projection, and fixing the turned position of the hanging plate.

Description

Height adjustment device of desk {HEIGHT ADJUSTABLE DEVICE FOR A DESK}

1 is a view showing a state of use of the height adjustment device of the desk according to an embodiment of the present invention.

Figure 2 is an exploded view showing the height adjustment device of the desk according to an embodiment of the present invention.

3 is a view for explaining the detailed structure of the height adjusting device of the desk according to an embodiment of the present invention.

4 is a view for explaining a lever structure for the operation of the height adjustment device of the desk according to an embodiment of the present invention.

5 and 6 are views for explaining the operation of the locking means of the height adjustment device of the desk according to an embodiment of the present invention.

7 is a view for explaining a locking means fixing structure of the height adjustment device of the desk according to an embodiment of the present invention.

The present invention relates to a device for adjusting the height of a desk, and more particularly, to a device for adjusting the height of a desk, which is easy to operate for adjusting the height of the desk, and which can secure further improved operational stability.

In general, most of the desks used in the school are made in the same appearance size and placed in each class, so most students do not have a desk size that is appropriate for their body type.

As such, the desk that is not suitable for the body shape of the student causes an unstable posture in a seated state, and when used for a long time in an unstable posture, it becomes a factor that causes malformations or diseases of the body spine.

In particular, more severe body side effects occur in students in the growing stages when the body shape changes drastically compared to the general adult.

In order to solve such a problem, a desk having a height adjusting device is provided in a support frame supporting the top plate from the bottom surface.

The desk is connected in a state in which the support frame is divided in the up and down direction so as to be slidably fitted, and after changing the connection length thereof, at least the position of the top plate is fixed by the height adjusting device, that is, the locking contact force of the locking pin or the screw shaft. It can be adjusted and fixed in two or more steps.

However, the above-described conventional height adjusting device does not provide a means for keeping the locking pins or the screw shafts in a locked contact state or a locked contact is released, for example, by a vibration or various shocks. It is difficult to secure satisfactory operation stability because the position of the pin or screw shaft is easily changed, causing malfunction.

In particular, when the locking pin or screw shaft is malfunctioned while the desk is in use, the locking state may be a factor causing safety accidents.

In addition, the height adjustment structure using the screw shaft is not only inconvenient to operate because the screw shaft has to be rotated several times to fix or release the connection state of the support frame, it is difficult to quickly operate when adjusting the height of the top plate.

In addition, since the height adjustment structure using the locking pin is held in a state of locking because the locking pin is mostly held on the spring, for example, when the height of the upper plate is adjusted, the user manually releases the locking state of the locking pin. Since the connection length of the support frame must be changed in a pulled state, there is a disadvantage in that the height is uncomfortable.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to simplify the operation for adjusting the height of the top plate, in particular to prevent the malfunction in the locking or unlocking state to obtain a further improved operational stability To provide a desk height adjustment device.

In order to realize the object of the present invention as described above,

A support frame for supporting the upper plate from the bottom surface by slidably fitting the upper frame and the lower frame upward and downward,

A housing located on an outer surface of any one of the upper frame and the lower frame and having a space therein;

It is hinged to the inner space of the housing is rotatably positioned based on the hinge point and has a locking projection that is detachably fitted into a plurality of locking grooves formed in any one frame of the two frames by a rotational operation in the engaging contact state With a stopping plate,

Camshaft-type locking means for rotating the locking plate to fix the locking plate so that the locking protrusion is inserted into the locking groove or out of position by the contact force of the eccentric protrusion.

It provides a height adjustment device of the desk comprising a.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention are described to the extent that those of ordinary skill in the art can practice the present invention.

Therefore, since the embodiments of the present invention may be modified in various other forms, the claims of the present invention are not limited to the embodiments described below.

1 and 2 is a view showing the overall structure of the height adjustment device according to an embodiment of the present invention 2 is a reference to the housing. The housing 2 is attached to one side of the support frame F for supporting the top plate P of the desk T from the bottom surface as shown in the figure.

 The support frame (F) is composed of an upper frame (F1) and the lower frame (F2), these frames (F1, F2) are fitted to slide in the up and down direction so that the connection length is changed.

For example, the lower frame F2 is provided with two guide grooves H, and the upper frame F1 is slidably fitted in the two guide grooves H so that the upper frame F1 can It can be made of a conventional desk frame structure that can adjust the height of the upper plate (P) fixed to the upper.

Then, the upper frame (F1) is formed with a plurality of locking grooves (G1) as shown in Figure 3 so that the position change can be caught in at least one step or more when moved along the guide groove (H) passage have.

On the other hand, the housing 2 has an internal space (S), and is welded and fixed in the same posture as shown in the drawing on one side of the outer surface of the guide groove (H) formed in the lower frame (F2).

In the internal space S of the housing 2, a locking plate 4 for limiting the slide operation of the upper frame F1 is positioned.

On one side of the locking plate 4, a locking protrusion G2 protrudes as shown in FIG. 3, and the housing protrusion 2 faces the locking groove G1 formed in the upper frame F1. The hinge is coupled to the inside in the same posture as in the drawing.

The locking plate 4 may be a metal plate or a synthetic resin plate having excellent durability and wear resistance, and hinge shafts 6 are formed on both sides thereof.

The locking projections G2 are inserted into the locking grooves G1 in a separable manner so that the locking contacts can be engaged, and the hinge shafts 6 are rotatably fixed to penetrate the inner wall of the housing 2. do.

On the other hand, a locking means 8 of the camshaft type is located inside the housing 2, and the means 4 are in contact with the locking plate 4 so as to rotate the locking plate 4.

To this end, in the present embodiment, the locking means 8 has a structure in which an eccentric protrusion 12 is formed on one side of the outer circumferential surface of the rotating shaft 10 as shown in FIG. 3, and the eccentric protrusion 12 is rotated when the rotating shaft 10 is rotated. ) Rotates in such a manner as to contact the locking plate 4.

The rotary shaft 10 is inserted in a direction penetrating the inside of the ground hole 14 formed in the locking plate 4 side in the housing 2 as shown in Figure 3 so that both ends are both sides of the housing 2 It is rotatably fixed to each wall.

In addition, one end of the rotation shaft 10 may further extend to the outside of the housing 2 so that the lever L may be attached to the outside of the housing 2 as shown in FIG. 4.

The lever 4 may be in the form of a cylindrical handle and serves to easily rotate the rotary shaft 10 in a state of being grasped by a user from the outside of the housing 2.

In addition, the eccentric protrusion 12 contacts the inner edge surface of the ground hole 14 of the locking plate 4 when the rotation shaft 10 is rotated at a predetermined angle with respect to the axis as shown in FIGS. 5 and 6. Thus, the locking plate 4 is rotated by a normal cam contact method.

That is, when the eccentric protrusion 12 is positioned as shown in FIG. 5, the locking plate 4 is rotated in the same direction as shown in the drawing so that the locking protrusion G2 is inserted into the locking groove G1 and locked. It becomes a state.

In such a locked state, the connection state of the upper frame F1 and the lower frame F2 is fixed.

And, when the eccentric projection 12 is located as shown in Figure 6, the locking plate 4 is rotated in the direction as shown in the drawing so that the locking projection (G2) is locked away from the locking groove (G1) Is released.

In such a state that the lock key is released, the height of the upper plate P is appropriately adjusted by changing the connection length between the upper frame F1 and the lower frame F1.

In the above description, the eccentric protrusion 12 is in contact with the locking plate 4 in an inscribed state as an example, but is not limited thereto. For example, although not shown in the drawing, it may be installed to be in contact with the outer circumferential peripheral surface of the locking plate 4 in an external state.

When the locking plate 4 is in a non-contact state with the locking means 8, the locking plate G2 is rotated based on the hinge point by the elastic repulsive force in the internal space S of the housing 2. It may be set to elastically fit inside the locking groove (G1).

For example, as shown in FIG. 3, an elastic member C1, such as a normal torsion coil spring, is fitted to one hinge shaft 6 of the latching plate 4 so as to be applied to the elastic repulsive force generated from the elastic member C2. As a result, the locking protrusion G2 may be caught by the locking groove G1.

This structure is such that the locking projection G2 is caused by the elastic member C1 when the locking means 8 is positioned at a neutral point without being manipulated to either side for locking and releasing as in FIG. 5 or 6. By always being caught in the locking groove (G1) it is possible to ensure a more stable operation always.

Although the elastic member C1 is not shown in the drawings in addition to the torsion coil spring, any one of a conventional leaf spring and a compression or tension coil spring may be used.

Of course, even at this time, the locking plate 4 is rotated relative to the hinge shaft 6 by the elastic repulsion force generated from any one of the springs so that the locking protrusion G2 is elastically inserted into the locking groove G1. Is set to lose.

As such, the method of setting the springs can be easily carried out by those skilled in the art, and thus a detailed description thereof will be omitted.

In addition, the locking means 8 is made to be secured in a state in which the locking protrusion G2 is caught or deviated by being fitted into the locking groove G1 by the engaging contact of the protrusion and the groove in the housing 2. .

To this end, in this embodiment, as shown in FIG. 2, a stop protrusion W1 is formed at one side of the eccentric protrusion 12, and two stop grooves W2 are formed at one inner wall surface of the housing 2 to stop the stop protrusion. W1 is inserted into any one of the two stop grooves W2 so that the locking plate 4 is locked or released.

For example, when the eccentric protrusion 12 is positioned as shown in FIG. 5 or 6, the stop protrusions W1 are fitted into one stop groove G2 or the other stop groove G2, respectively. The locking plates 4 are fixed in the same posture as shown in the figure.

The tension generating member C2 is further installed in the housing 2 to allow the stop protrusion W1 to be elastically fitted into the two stop grooves W2.

As the tension generating member C2, a compression coil spring may be used among ordinary springs.

The compression coil spring is sandwiched between one inner wall of one side of the housing 2 and one end of the rotating shaft 10 as shown in FIG. 7 so that the stopping protrusion W1 is stopped by the elastic repulsive force. It is moved to the (W2) side is set to enable the tension to be elastically fitted.

As described above, in the fixed state in which the stop protrusion W1 is inserted into one of the two stop grooves W2 inside the groove W2, the stop protrusion (W) is pulled by an operation of pulling the lever C of the rotation shaft 10. W1) is separated from the stop groove W2.

Such a locking structure, for example, can easily proceed the height adjustment of the upper plate (P) compared to the conventional height adjustment device that does not have a means for fixing so that the locking pin is maintained in a locked or released state, in particular It can prevent the malfunction by vibration or various shocks as much as possible.

In the above description, the compression coil spring is used as the tension generating member (C2) as an example and shown in the drawings and drawings, in addition to the conventional leaf spring, tension coil spring or torsion spring and the like can be used.

As described above, the present invention, by changing the connection length of the support frame for supporting the desk top plate from the bottom surface can be easily adjusted the height of the top plate, especially locking or releasing the support frame when the height is adjusted. Since it provides a means for fixing in a state, it is possible to quickly operate and to prevent malfunction due to vibration or shock, further improved operation stability can be obtained.

Claims (8)

A support frame for slidably fitting the upper frame and the lower frame upward and downward to support the upper plate from the bottom surface; A housing disposed on an outer surface of any one of the upper frame and the lower frame and having a space therein; It is hinged to the inner space of the housing is rotatably positioned based on the hinge point and has a locking projection that is detachably fitted into a plurality of locking grooves formed in any one frame of the two frames by a rotational operation in the engaging contact state Stopping plate; A camshaft type locking means for rotating the locking plate to fix the locking plate so that the locking protrusion is in a state where the locking protrusion is fitted into the locking groove or out of position by the contact force of the eccentric protrusion; Height adjustment device of the desk comprising a. The method according to claim 1, The guide frame is formed in any one frame of the upper frame and the lower frame, the height adjustment device of the desk, characterized in that the other frame having a plurality of engaging grooves are slidably fitted in the guide groove. The method according to claim 1, The locking means is hinged rotatably inside the housing to adjust the height of the desk made of eccentric protrusions in contact with the locking plate in an external or inward state as the position of the eccentric protrusion changes in one direction based on the hinge point. Device. The method according to claim 1, The eccentric protrusion is a height adjustment device of the desk, characterized in that the locking plate is fixed while being in contact with the inner wall surface of the housing detachably contacted by the fitting force of the projection and the groove. The method according to claim 1, The height adjusting device of the desk further includes a tension generating member for generating a tension between the eccentric projection and the inner wall surface of the housing and the projection and the groove is located in a state in which the engaging contact is possible to engage. The tension generating member is a height adjustment device of a desk in which any one of a compression coil spring, a tension coil spring or a leaf spring, and a torsion spring is used. The method according to claim 1, Height adjustment device of the desk is a height adjustment device of the desk further comprises an elastic member to be rotated in any direction by the elastic plate force based on the hinge point so that the locking projection is positioned in the state of being fitted into the locking groove. . The method according to claim 6, The elastic member is a height adjustment device of the desk is used any one of the torsion spring, leaf spring, tension coil spring, compression coil spring. The method according to claim 1, Height adjustment device of the desk further comprises a lever that can be rotated from the outside of the housing so that the locking means is a camshaft action.

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