JP2000037234A - Desk with top plate height adjustor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a top plate be easily brought up/down so as to give no restriction to the down side. SOLUTION: A stopper 9 is designed so as to be inclined to only one side of an elastic force balance line preset by a spring 15 when a moving plate 5 fixed to the top plate is guided by a fixed plate 3 to be vertically moved. Accordingly, when the top plate is vertically moved, a guide pin 13 is stepwisely stored in a positioning groove 21 or guided by a guide line 19 making one round. A rack 41 is disposed on a side face of the moving plate 5 to vertically move the top plate keeping balance in the horizontal condition. On the other hand, a pair of pinions 49 formed so as to be engaged with the rack 41 are mutually connected by a shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk having a top plate height adjusting mechanism, and more particularly to a table top which adjusts the height of the top plate only by moving the top plate up and down without giving any restrictions to the size of the drawer. The present invention relates to a desk with a plate height adjusting mechanism.

[0002]

2. Description of the Related Art Heretofore, as a method of adjusting the height of a top plate such as a side table, there has been known a method of moving a top plate up and down while unlocking a stopper with a lever.

[0003]

However, in the conventional method of adjusting the height of the top plate, it is difficult to adjust the lever, and the height is also adjusted by hand, so that the top plate cannot always be fixed to the uppermost step. It was difficult to intuitively judge whether the top plate had reached the top. In addition, such a top plate height adjustment mechanism provided for adjusting the height of the top plate usually has to be large in space and has to limit the size of the drawer. Alternatively, when there is no limitation on the size of the drawer, the size of the side desk or the like has to be increased.

[0004] The present invention has been made in view of such a conventional problem, and adjusts the height of the top plate only by moving the top plate up and down so that the height of the drawer is not restricted at all. It is an object of the present invention to provide a desk with an adjustment mechanism.

[0005]

According to the present invention, a fixed plate attached to a side plate, a moving plate guided and moved by the fixed plate, and an upper portion of the moving plate are provided. A stopper having a rotating plate fixed to the top plate and the fixed plate, a guide pin mounted at a position distant from the rotating shaft, and an elastic member disposed to be inclined to one of the preset elastic force balance lines. And a top plate balance means for raising and lowering the top plate while keeping the balance in a horizontal state, wherein the movable plate holds the guide pins for guiding the guide pins in a loop, and holds the guide pins stepwise. For at least one positioning groove provided according to the guidelines,
An uppermost positioning groove for determining the uppermost position of the top plate below the guide line, and the guide pin is guided in connection with the uppermost positioning groove, and the guide pin is connected to the other end of the elastic force balance line at the other end. A guide groove for tilting the top plate, and an uppermost-stage slip-off prevention portion for preventing the top plate from slipping off from the uppermost stage in opposition to the uppermost-stage positioning groove is provided. It has a rack machined or attached to the side surface of the movable plate provided for each side plate, a pinion attached to the fixed plate so as to mesh with the rack, and a shaft connecting the centers of the pinions. And

[0006] A fixing plate is attached to the side plate. The moving plate moves while being guided by the fixed plate. A top plate is attached to the upper part of the moving plate. The stopper rotates about a rotation axis, and the rotation axis is fixed to a fixed plate. A guide pin is attached to the stopper at a position away from the rotation axis. Furthermore,
The stopper is provided with an elastic member. The stopper is designed to be inclined to one of the preset elastic force balance lines by the elastic member.

[0007] The movable plate is provided with a guide line for guiding the guide pin in a circle. In the middle of the guideline, at least one positioning groove is provided along the guideline. This positioning groove holds the top plate stepwise by accommodating the guide pin. An uppermost positioning groove is provided below the guideline to determine the uppermost position of the top plate. A guide groove is provided in connection with the uppermost positioning groove. The guide groove guides the guide pin, and is designed so that the guide pin is inclined to the other end of the elastic force balance line at the other end of the guide groove. In addition, an uppermost-stage dropout prevention portion is provided to face the uppermost-stage positioning groove to prevent the top plate from coming off from the uppermost stage.

On the other hand, in order to raise and lower the top plate while keeping the balance in a horizontal state, a top plate balance means is provided. This top plate balance means is composed of a rack and a pinion, and a shaft connecting the centers of the pinions. The fixed plate and the movable plate are provided for a pair of side plates facing each other. A rack is machined or attached to the side of the moving plate.

[0009] The rack is processed by applying irregularities to the side surface of the moving plate, or by performing a hole-punching process or the like. However, a separately manufactured rack may be attached to the side surface of the moving plate. When the rack is processed on the side of the moving plate, the rack can be made at the same time in the series of processing for manufacturing the moving plate, which can save labor, save money, and shorten the time for assembly work. I can do it. On the other hand, the pinion is attached to the fixed plate so as to mesh with the rack. The centers of a pair of opposing pinions are connected by a shaft.

As described above, the height of the tabletop can be adjusted only by the vertical movement of the tabletop without using any other accessory device. Also, the position of the top of the top plate can be easily confirmed.
In addition, since the top plate can be moved up and down while maintaining the left-right balance of the top plate, the height adjustment of the top plate can be reliably functioned. The top balance means can be constituted by a simple mechanism.

The present invention (claim 2) is characterized in that a decorative plate is applied to the moving plate so that the inside and / or the back surface of the moving plate is not exposed when the top plate is moved up and down.

The rack is provided on the side of the moving plate. Along with this, the pinion can also be arranged outside the movable plate, and the decorative plate can be applied to the movable plate. If the decorative plate is applied to the moving plate, the inside and / or the back surface of the moving plate can be prevented from being exposed when the top plate is moved up and down. Thus, it is possible to prevent the risk that the meshing portion between the pinion and the rack is exposed. In addition, since the inside and / or the back surface of the movable plate can be hidden, the appearance can be maintained.

Further, according to the present invention (claim 3), both ends of the elastic member are slidable along sliding grooves provided around spring guide pins fixed to the fixing plate and the stopper, respectively. Features.

The spring guide pins are fixed at two places. One is a stopper and the other is a fixing plate. Both ends of the elastic member are slidable along sliding grooves provided around the two spring guide pins. As a result, the elastic member expands and contracts stably, and the elastic member does not deform irregularly during expansion and contraction and does not touch the moving plate or the fixed plate.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration diagram of the first embodiment of the present invention. FIGS. 1A and 1B are a front view and a plan view, respectively, of a first embodiment of the present invention. In FIG. 1, a fixed plate 3 is attached to a side plate 1. The movable plate 5 is guided by the fixed plate 3 and moves.
A top plate 7 is attached to an upper portion of the moving plate 5. The stopper 9 is adapted to rotate about a rotation shaft 11. The rotation shaft 11 is fixed to the fixed plate 3. A guide pin 13 is attached to the stopper 9 at a position away from the rotation shaft 11. Further, the stopper 9
Is provided with a spring 15.

One end 15a of the spring 15 is hung in a spring stopper hole 16 opened substantially at the center of the stopper 9. However, as shown in FIG. 2, a spring guide pin 26 may be attached to the center of the stopper 9 so that the one end 15a of the spring 15 can slide along a slide groove 28 provided around the spring guide pin 26. . An enlarged view of the spring guide pin 26 is shown in FIG. 3, and an enlarged view of the spring 15 is shown in FIG. On the other hand, the other end 15 b of the spring 15 is hooked on the hook 30.

The stopper 9 is designed to be tilted to one of the elastic force balance lines 17 preset by the spring 15. The spring 15 is equivalent to an elastic member, but is not limited to a spring as long as it has an elastic force.
Rubber or the like may be used. Guide pins 13 are provided on the moving plate 5.
A guideline 19 is provided to guide the user in a round. Further, four positioning grooves 21 are provided along the guide line 19 along the guide line 19.

The positioning groove 21 accommodates the guide pin 13 to hold the top plate 7 stepwise. An uppermost positioning groove 23 is provided below the guideline 19 so that the uppermost position of the top plate 7 can be determined. The guide groove 25 is provided so as to be connected to the uppermost positioning groove 23. The guide groove 25 guides the guide pin 13, and at the other end of the guide groove 25, the guide pin 13 is designed to incline to the left of the elastic force balance line 17.

Also, facing the uppermost positioning groove 23,
To prevent the top plate 7 from coming off from the uppermost stage, an uppermost stage coming-off prevention portion 27 is provided. A predetermined inclination is provided in the uppermost step drop-out prevention portion 27 so that the stopper 9 does not tilt to the left of the elastic force balance line 17 due to a reaction at the time of collision with the guide pin 13. The fixed plate 3, the movable plate 5, the stopper 9, and the like are buried in the side plate 1 as a unit. The state of the unit mounting groove is shown in FIG.

As shown in FIG. 1, the fixed plate 3 is provided with a pinion 29, and the movable plate 5 is provided with a rack 31.
Is arranged for each. The rack 31 manufactured separately is fixed to the moving plate 5 with screws. And
The centers of the pinions 29 are connected by a shaft 33.

FIG. 6 shows a state where the centers of the pinions 29 are connected to each other by the shaft 33. On the upper plate 37,
A shaft groove 39 for accommodating the shaft 33 is provided. The state of the shaft groove 39 is shown in FIG. The shaft 33 can be divided into two parts, and can be freely connected on the way by screws 35. FIG. 8A shows the state at this time.
It is shown in (B). FIG. 8B is a partially enlarged view of a connecting portion by a screw 35. The shaft 33 is a square shaft.

Next, the operation of the first embodiment of the present invention will be described. In FIG. 1, the moving plate 5 is guided by the fixed plate 3 and moves up and down. The stopper 9 rotates about a rotation shaft 11. The stopper 9 is designed to incline only to one of the elastic force balance lines 17 preset by the spring 15. For example, when the guide pin 13 moves along the right line of the guide line 19, the spring 15 works to tilt the stopper 9 to the right of the elastic force balance line 17. For this reason, the top plate 7 is raised and the guide pins 1
When 3 comes into contact with the positioning groove 21, it can be confirmed that it has reached the positioning groove 21 by the sound and vibration of the contact.

Thereafter, when the top plate 7 is slightly lowered, the guide pins 13 are housed in the positioning grooves 21. This state is maintained until the top plate 7 is raised again. When the top plate 7 continues to be further raised, the guide pin 13 collides with the uppermost step prevention portion 27. Therefore, the top board 7 cannot move higher than the position of the uppermost step-off preventing portion 27.

A guide pin 1
A predetermined angle is provided so that the stopper 9 does not tilt to the left of the elastic force balance line 17 due to the recoil at the time of collision with 3. After that, if the top plate 7 is slightly lowered, the guide pins 13
Is stored in the uppermost positioning groove 23 by the spring 15.
That is, this position is the uppermost position to which the top plate 7 is fixed. At this time, if the top plate 7 is further raised, the guide pins 13 are guided along the guide grooves 25 formed in an inverted L-shape.

FIG. 1C is a cross-sectional view of the guide groove 25. As shown in FIG. At the other end of the guide groove 25, the guide pin 13 is designed to incline to the left of the elastic force balance line 17. Therefore, the stopper 9 tilts to the left of the elastic force balance line 17. At this time, the guide pin 13 contacts the left side line of the guide line 19. By moving down the top plate 7, the guide pins 13 are stored in the positioning grooves 21 located at the uppermost position of the movable plate 5.

As described above, the height of the top plate 7 can be adjusted only by the vertical movement of the top plate 7 without using any other accessory device or the like. Further, the position of the uppermost stage of the top plate 7 can be easily confirmed. As shown in FIG. 2, the fixed plate 3, the moving plate 5, the stopper 9, and the like are embedded in the side plate 1. By being embedded in the side plate 1, there is no restriction on the drawer due to the presence of the fixed plate 3, the movable plate 5, the stopper 9, and the like.

As shown in FIG. 1, a pinion 29 is fixed to the fixed plate 3 and a rack 31 is fixed to the movable plate 5 by a pair of side plates 1.
To each of them. The centers of the pinions 29 are connected by a shaft 33. This allows
The top plate can be lifted and lowered in a well-balanced manner by the tension force.

The shaft 33 is accommodated in a shaft groove 39 provided on the upper plate 37 as shown in FIG. As shown in FIG. 5, the shaft 33 can be divided into two shafts, and can be freely connected by screws 35 on the way. This facilitates disassembly at the time of repair or the like, so that work can be easily performed.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in FIG. In FIG. 9, the rack 41 is provided by making a hole on one side surface of the moving plate 5. However, the rack 41 may be configured by applying uneven teeth or the like to one side surface of the moving plate 5.
On the other hand, a pinion 49 is attached to the fixed plate 3 so as to mesh with the rack 41.

FIG. 10 shows an external view of the pinion 49. FIG. The pinion 49 is inserted from a portion having a larger opening area inside the opening portion 34a and moves outward. Thereafter, the moving plate 5 is penetrated through the fixed plate 3 to be fitted. The reason why the opening 34b is provided in addition to the opening 34a is that versatility is provided so that the fixing plate 3 may be used on either the left or right side of the pair of side plates 1.

A pinion 29 is provided on the back side of the movable plate 5 in FIG.
And the rack 31 are fixed, the decorative plate cannot be provided. However, as shown in FIG. 9, the pinion 49 is arranged outside the moving plate 5 and the rack 41 is processed on the side surface of the moving plate 5, so that the decorative plate 50 can be provided on the back side of the moving plate 5. It became so.

As a result, when the top plate 7 moves up and down,
Can be prevented from being exposed. Therefore,
It is possible to prevent a risk that the meshing portion between the pinion 49 and the rack 41 is exposed. Also, in appearance,
Since the rear surface of the moving plate 5 can be hidden, the appearance can be maintained.

On the other hand, the other end 15b of the spring 15 is slidable along a slide groove 38 of the spring guide pin 32 as shown in FIG. The configuration of the spring guide pin 32 is the same as the configuration of the spring guide pin 26 shown in FIG. In the first embodiment of the present invention, the other end 15b of the spring 15 is hooked on the hook 30 as shown in FIG.
The movement accompanying the expansion and contraction of is restricted by the hook 30.

Therefore, the spring 15 fluctuates irregularly and comes into contact with the movable plate 5 and the fixed plate 3. However, in the second embodiment of the present invention, the other end 15b of the spring 15 is
Since the spring 15 slides along the sliding groove 38 of the spring guide pin 32 with the expansion and contraction, the spring force is moderately dispersed, and the spring 15 does not contact the moving plate 5 or the fixed plate 3. For this reason, a series of operations can be performed smoothly and stably, and the frequency of failures and the like is reduced.

[0035]

As described above, according to the present invention, the height of the top plate can be adjusted only by moving the top plate up and down. Also, there is no restriction on the size of the drawer. Since the rack is arranged on the side surface of the moving plate, the rack can be made at the same time in a series of processings for manufacturing the moving plate, so that labor saving, economy, and time for assembling work can be reduced. .
Furthermore, further safety and aesthetics can be considered, for example, by providing a lid on the back of the moving plate.

[0036]

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a detailed mechanism of a stopper.

FIG. 3 is an enlarged view of a spring guide pin.

FIG. 4 is an enlarged view of a spring.

FIG. 5 is a diagram showing a state of a unit mounting groove.

FIG. 6 is a view showing a state in which centers of pinions are connected by a shaft;

FIG. 7 is a diagram showing a state of a shaft groove.

FIG. 8 is a diagram showing a state of a shaft that is divided into two and that can be connected by screws.

FIG. 9 is a configuration diagram of a second embodiment of the present invention.

FIG. 10 is an outline drawing of a pinion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side plate 3 Fixed plate 5 Moving plate 7 Top plate 9 Stopper 11 Rotary shaft 13 Guide pin 15 Spring 17 Elastic force equilibrium line 19 Guideline 21 Positioning groove 23 Topmost positioning groove 25 Guide groove 26, 32 Spring guide pin 27 Part 28, 38 Sliding groove 29, 49 Pinion 30 Hook 31, 41 Rack 33 Shaft 34a, 34b Opening 35 Screw 37 Upper plate 39 Shaft groove 50 Decorative plate

Claims (3)

[Claims] 1. A fixed plate attached to a side plate, a moving plate guided and moved by the fixed plate, a top plate attached to an upper portion of the moving plate, and a rotating shaft fixed to the fixed plate, A guide pin is attached at a position distant from the rotation axis, and a stopper provided with an elastic member to be inclined to one of the preset elastic force balance lines, and the top plate is moved up and down while maintaining a horizontal balance. A guide plate for providing a top plate balance means, a guide groove for guiding the guide pin around the movable plate, and a positioning groove provided at least one along the guide line for holding the guide pin stepwise, An uppermost positioning groove for determining the uppermost position of the top plate below the guide line, and the guide pin is guided in connection with the uppermost positioning groove, and the guide pin is connected at the other end to the elastic force balance line. A guide groove inclined to the other side, and an uppermost step prevention part for preventing the top plate from slipping off from the uppermost step facing the uppermost position positioning groove are provided, and the top plate balance means includes a pair of opposing ones. A rack processed or attached to the side surface of the movable plate disposed on each of the side plates, a pinion attached to the fixed plate so as to mesh with the rack, and a shaft connecting the centers of the pinions. A desk with a top plate height adjustment mechanism. 2. The height adjustment of the top plate according to claim 1, wherein a decorative plate is applied to the movable plate so that the inside and / or the back surface of the movable plate is not exposed when the top plate is moved up and down. Desk with mechanism. 3. The elastic member according to claim 1, wherein both ends of said elastic member are slidable along sliding grooves formed around spring guide pins fixed to said fixed plate and said stopper, respectively. 2. A desk with a top plate height adjusting mechanism according to 2.