JP3313689B2 - Top plate height adjustment mechanism and desk with top plate height adjustment mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a top plate height adjustment mechanism and a desk with a top plate height adjustment mechanism, in particular, the height adjustment of the top plate is easy, the durability is excellent, the mass production is achieved, and the drawer is drawn out. The present invention relates to a top plate height adjustment mechanism and a desk with a top plate height adjustment mechanism that do not limit the size of the table.

[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.

It has been difficult to raise and lower the top plate in a stable state. Furthermore, such a top plate height adjustment mechanism provided to adjust 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.

[0005] The present invention has been made in view of such conventional problems, the height of the top plate can be easily adjusted, and the durability is excellent.
An object of the present invention is to provide a top plate height adjustment mechanism and a desk with a top plate height adjustment mechanism that can be mass-produced and do not impose any restrictions on the size of a drawer.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention (claim 1) is directed to an elongated hole which is long in the longitudinal direction and a predetermined portion on the left and / or right side of the elongated hole, and the upper portion is directed toward the elongated hole. A fixed plate having a plurality of pin storage portions formed with a gentle rising slope, and a moving plate having a bent piece that is guided by the fixed plate and moves, and is bent toward the fixed plate on both sides. And a spindle disposed on the moving plate, and swingable around the spindle,
One end of the stopper is attached to the bent piece, and the stopper is attached to the stopper at a position away from the support shaft. The stopper is movable in the elongated hole and the pin storage portion, and the stopper has one end. A guide pin set to be located in the elongated hole when contacted with the bent piece, and one end for urging the stopper so that the guide pin fits in the pin storage portion is held by the moving plate. An urging means, an operating rod capable of operating the stopper around the support shaft so that the guide pin is disengaged from the pin storage portion against the urging by the urging means, and an operating rod disposed at an upper end of the operating rod. And an installed lever.

[0007] A long hole is opened in the fixing plate in the longitudinal direction. A plurality of pin housings are provided at predetermined locations on the left and / or right sides of the elongated hole. The pin storage portion has a gentle upward slope toward the long hole at the top.
The movable plate is guided by the fixed plate and moves, and has bent pieces on both sides bent toward the fixed plate. The support shaft is supported by the movable plate. The stopper can swing around the support shaft, and one end of the stopper can contact the bent piece. When this one end is brought into contact with the bent piece, the stopper stops swinging.

[0008] The guide pin is mounted at a position away from the spindle of the stopper. The guide pin is set so as to be movable in the elongated hole and the pin storage portion, and to be positioned in the elongated hole when one end of the stopper comes into contact with the bent piece. If the state where the guide pin is located in the elongated hole is maintained, the guide pin will not be caught in the pin storage portion, and the movable plate can be smoothly moved in the vertical direction.

The urging means urges the stopper such that one end thereof is held by the movable plate and the guide pin is accommodated in the pin housing. The operation rod can operate the stopper around the support shaft so that the guide pin is disengaged from the pin storage portion against the urging by the urging means. A lever is provided at the upper end of the operation rod.

By operating this lever, the state where the guide pin is located in the elongated hole is maintained. In this state, the movable plate becomes movable in the vertical direction. When the lever is released, the guide pin is pressed against the inner edge of the pin receiving portion or the elongated hole on the side where the pin receiving portion is formed by the urging means.

In this state, when a downward force such as gravity acts on the movable plate, the guide pins slide along the rising inclination formed in the pin storage section, and are finally stored in the pin storage section without fail. You. This height adjustment, by operating the lever,
You can move smoothly to any height position directly,
It is possible to stop at this position. As described above, the height of the top plate can be easily adjusted.

The elongated hole and the pin housing have a simple structure, and a sufficient strength is ensured by the thickness of the fixing plate in which the elongated hole and the pin housing are formed. Therefore, the durability is excellent.

Further, according to the present invention (claim 2), the elongated hole is disposed at the center in the width direction of the fixing plate, and the pin storage portion is formed symmetrically on the left and right sides of the elongated hole. It is characterized by the following.

The top plate height adjustment mechanism is used as a pair facing left and right. For this reason, it is necessary to arrange the positions of the elongated hole and the pin storage portion so that they coincide when the left and right are aligned. If the long hole is arranged at the center in the width direction of the fixed plate, and the pin storage portions are formed symmetrically on the left and right sides of the long hole, the fixed plate, movable plate, guide pin, lever, Parts such as the urging means, the stopper, and the operation rod are shared, and mass production becomes possible.

However, the direction in which the bent pieces of the moving plate are raised is opposite. However, drilling can be performed in common, and the same die can be used for the bending performed subsequent to the drilling.

Further, according to the present invention (Claim 3), a slide hole is opened in a predetermined portion of the moving plate in a vertical direction, and an upper end of the operation rod passes through the slide hole and the lever connects the moving plate. It is characterized in that it is disposed on the opposite side of the fixed plate with the sandwiched between.

The upper end of the operating rod passes through a slide hole, and can move vertically inside the slide hole. Since the lever is disposed on the opposite side of the fixed plate with the movable plate therebetween, the lever is easily operated.

Further, the present invention (Claim 4) provides Claim 1,
The top plate height adjusting mechanism according to 2 or 3 is applied to a desk, the fixed plate is attached to a side plate, and a top plate is attached to an upper portion of the moving plate.

The top plate height adjustment mechanism is applied to a desk. This top plate height adjustment mechanism is attached to each of the side plates facing each other. A top plate is attached to the upper part of the moving plate.

Further, the present invention (Claim 5) comprises a top plate balance means for raising and lowering the top plate while keeping the balance in a horizontal state, and the top plate balance means is provided for each of the side plates facing each other. A rack attached to one of the moving plate and the fixed plate, and a pinion attached to one of the other of the fixed plate and the moving plate, the centers of which are connected by a shaft. I do.

The top plate balancing means is provided for each of the side plates facing each other, and includes a rack and a pinion meshed with the rack. The centers of the opposing pinions are connected by a shaft. For this reason, the pinions are linked to each other, and the movement of the moving plate is also synchronized, so that the top plate can be moved up and down while keeping a horizontal state.

Further, according to the present invention (claim 6), the pinion is disposed at the center in the width direction of the fixing plate, and a through hole for passing the operation rod is disposed at a predetermined portion of the rack. It is characterized by.

By doing so, members such as a rack, a pinion, a moving plate and a fixed plate are shared, and mass production is possible.

Further, the present invention (claim 7) is characterized in that a horizontal decorative plate for screwing is provided at an upper end of the fixing plate.

[0025]

Embodiments of the present invention will be described below. FIG. 1 is a front view of a top plate height adjusting mechanism 10 according to an embodiment of the present invention, FIG. 2 is a side view, FIG.
Shows a plan view. The top plate height adjusting mechanism 10 is embedded in a right side plate of a desk (not shown) (including a side desk and the like).

1 to 4, the upper part of the fixing plate 1 is bent at a right angle. A horizontal decorative plate 3 for screwing is provided above the fixing plate 1. FIG. 5 shows a configuration diagram of the horizontal decorative board 3. An opening 5 is provided in the upper part of the fixed plate 1 bent at a right angle and in the horizontal decorative plate 3, and L-shaped sliding receiving portions 7 a and 7 b are formed on the lower back surface of the fixed plate 1.

The moving plate 9 penetrates the opening 5 and is slidable up and down while being held by the slide receiving portions 7a and 7b.
FIG. 6 shows a structural diagram of the moving plate 9. In the center of the fixing plate 1 in the width direction, a long hole 11 opened long in the vertical direction and this long hole 1
A plurality of pin housings 13 are provided so as to form a pair on the left and right sides of one.

Each of the pin housings 13 is formed with a gentle upward slope 13a toward the elongated hole 11 at an upper portion thereof. On both sides of the movable plate 9, bent pieces 9a bent toward the fixed plate 1 are formed.

A support shaft 15 is provided at the center of the movable plate 9 in the width direction, and a stopper 17 is supported by the support shaft 15 and is swingable. FIG. 7 shows an outline view of the stopper 17. In FIG. 7, the stopper 17 has a structure having a projection 17a at the lower left corner of a square.

When the stopper 17 is in a horizontal state, the guide pin 19 is positioned so that it is directly below the support shaft 15.
7 is fixed. The guide pin 19 is provided on the slide receiving portion 7.
a, 7b. A spring hook hole 21 is provided at the lower left of the stopper 17, and an operation rod hook hole 23 is provided at the upper left.

The movable plate 9 just below the support shaft 15 has a hook 25
The spring 27 has one end hooked on the hook 25 and the other end hooked on the spring hooking hole 21. FIG. 8 shows an outline view of the spring 27.

A connecting pin 29a provided at the lower end of the operating rod 29 is hooked in the operating rod hooking hole 23. FIG. 9 shows an outline view of the operation rod 29. FIG. The upper end of the operating rod 29 is formed in an L-shape, and a lever 31 is provided at the end. A slide hole 33 is opened in the upper part of the movable plate 9 in the vertical direction. An L-shaped portion at the upper end of the operation rod 29 passes through the slide hole 33, and the lever 31 of the fixed plate 1 sandwiches the movable plate 9. Located on the opposite side.

At the center in the upper width direction of the fixed plate 1, a circular pinion hole 35 is provided, and the projecting shaft 37a of the pinion 37 is rotatably fitted in the pinion hole 35. . An outline drawing of the pinion 37 is shown in FIG.

A square recess 37b is formed at the center of the pinion 37. A top plate height adjustment mechanism having a structure symmetrical to the top plate height adjustment mechanism 10 is also provided on the left side plate of the desk in opposition to the top plate height adjustment mechanism 10. Not the top plate is fixed. Shafts (not shown) are connected to the angular recesses 37b of the pinions 37 facing each other.

The rack 39 is fixed to the left part of the moving plate 9. A tooth row (not shown) is formed on the right side of the rack 39 so as to mesh with the tooth row of the pinion 37.
An outline drawing of the rack 39 is shown in FIG. On the rack 39,
A through hole 39a through which the operation rod 29 passes is provided.

Next, the operation of the embodiment of the present invention will be described. The top plate height adjustment mechanism 10 is opposed to the left and right pair corresponding to the side plate of the desk. The stopper 17 is urged around the support shaft 15 by a spring 27 in the clockwise direction. For this reason, the guide pin 19 is stationary in a state where the guide pin 19 is securely stored in the pin storage unit 13. The rest at this time is further ensured by the gravity of the top plate. In this state, the top plate maintains a certain height.

Next, when it is desired to change the height of the top plate,
The lever 31 is pulled up and operated. This lifting operation stops when the L-shaped portion of the operation rod 29 reaches the upper end of the slide hole 33. At this time, the stopper 17 is rotated clockwise against the spring 27 via the operation rod 29. For this reason, the guide pin 19 comes off from the pin housing 13. Then, the rotation is stopped when the projection 17a of the stopper 17 comes into contact with the bent piece 9a of the movable plate 9.

At this time, the guide pin 19 is designed to be directly below the support shaft 15. That is, the guide pin 19
Will stop at the center of the elongated hole 11 and will not be caught by the pin storage portion 13. When the lever 31 is further pulled upward in this state, the moving plate 9
It moves upward while being hung on the character-shaped portion. It is also possible to push down the movable plate 9 with the lever 31 pulled up. In this case, the guide pin 19 can freely pass from the lower end to the upper end of the elongated hole 11.

When the lever 31 is released at the desired height, the guide pin 19 is moved
3 Even when the guide pin 19 is in contact with the ascending slope 13a, the guide pin 19 is always stored in the pin storage section 13 by the urging force of the spring 27 if the top plate is subjected to gravity or the like.

As described above, the height of the top plate can be adjusted by unlocking the guide pin 19 by a simple operation of lifting the lever 31 upward, and it is possible to change from the unlocked position to a desired height position at a stretch. It is.

The elongated hole 11 and the pin housing 13 have a simple structure, and a sufficient strength is ensured by the thickness of the fixing plate 1 on which the elongated hole 11 and the pin housing 13 are formed. Therefore, the durability is excellent.

The reason why the pin housing portions 13 are formed symmetrically on the left and right sides of the long hole 11 is that the members of the top plate height adjusting mechanism 10 which need to be provided on the left and right sides of the desk are shared. The moving plate 9 shown in FIG.
The left and right positions are different from each other, but the only difference is whether the bent piece 9a is bent to the front side or the back side. Therefore, the drilling process is common, and the die used for the bending process is also common. Be transformed into

The pinion 3 facing the shaft 3
7, the pinions 37 are linked to each other, and the elevation of the movable plate 9 is also synchronized, so that the top plate can be elevated and lowered while maintaining a horizontal balance.

Further, since the fixed plate 1 has a small depth that can be stored in the side plate of the desk, the fixed plate 1 can be configured without any restriction on the size of the drawer.

[0045]

As described above, according to the present invention, by operating the lever, it is possible to directly and smoothly move to a position at an arbitrary height, and to reliably stop. Therefore, the height of the top plate can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a front view of a top plate height adjustment mechanism.

[Fig. 2]

FIG. 3 is a bottom view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a configuration diagram of a horizontal decorative board.

FIG. 6 is a structural diagram of a moving plate.

FIG. 7 is an external view of a stopper.

FIG. 8 is an outline drawing of a spring.

FIG. 9 is an outline drawing of an operation rod.

FIG. 10 is an outline drawing of a pinion.

FIG. 11 is an outline drawing of a rack.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed plate 3 Horizontal decorative plate 5 Opening 7 Sliding receiving part 9 Moving plate 9a Bending piece 10 Top plate height adjustment mechanism 11 Elongated hole 13 Pin storage part 13a Ascending slope 15 Support shaft 17 Stopper 17a Projection 19 Guide pin DESCRIPTION OF SYMBOLS 21 Spring hook hole 23 Operation rod hook hole 25 Hook 27 Spring 29 Operation stick 29a Connecting pin 31 Lever 33 Slide hole 35 Pinion hole 37 Pinion 37b Square recess 39 Rack 39a Through hole

Claims (7)

(57) [Claims] 1. A long hole which is opened long in the longitudinal direction, and a plurality of pin storage portions formed at a predetermined position on the left and / or right side of the long hole with a gentle upward inclination toward the long hole. A fixed plate, a movable plate which is guided by the fixed plate and moves and has bent pieces bent on both sides toward the fixed plate side, a support shaft arranged on the movable plate, A stopper that can swing around the support shaft, one end of which can abut on the bent piece; and a stopper that is attached to the stopper at a position away from the support shaft, and is movable in the elongated hole and the pin storage portion. And a guide pin set to be located in the elongated hole when one end of the stopper comes into contact with the bent piece, and biases the stopper so that the guide pin fits into the pin storage portion. A biasing means having one end held by the movable plate, and a biasing means for resisting biasing by the biasing means. An operating rod capable of operating the stopper around the support shaft so that the guide pin is disengaged from the pin storage portion, and a lever disposed at an upper end of the operating rod. Plate height adjustment mechanism. 2. The slot according to claim 1, wherein the slot is disposed at the center of the fixing plate in the width direction, and the pin housing is formed symmetrically on the left and right sides of the slot. Top plate height adjustment mechanism. 3. A slide hole is opened in a predetermined direction of the movable plate in a vertical direction, and an upper end of the operation rod passes through the slide hole and the lever is located on the opposite side of the fixed plate across the movable plate. 3. The device according to claim 1, wherein the device is provided.
The described top plate height adjustment mechanism. 4. The top plate height adjusting mechanism according to claim 1, wherein the top plate height adjustment mechanism is applied to a desk, the fixed plate is attached to a side plate, and the top plate is attached to an upper portion of the moving plate. A desk with a top plate height adjustment mechanism. 5. A top plate balance means for raising and lowering the top plate while keeping the balance in a horizontal state, wherein the top plate balance means is provided for each of the side plates facing each other, and is provided for the movable plate or the fixed plate. The top plate height according to claim 4, further comprising a rack attached to one of the fixed plates and a pinion attached to one of the fixed plate and the movable plate, the centers of which are connected to each other by a shaft. Desk with adjustment mechanism. 6. The pinion according to claim 5, wherein the pinion is disposed at the center in the width direction of the fixing plate, and a through hole for passing the operation rod is disposed at a predetermined portion of the rack. Desk with top plate height adjustment mechanism. 7. The fixing plate according to claim 1, wherein a horizontal decorative plate for screwing is provided at an upper end of the fixing plate.
A desk with a top plate height adjusting mechanism according to 3, 4, 5 or 6.