JPH0838271A - Writing bureau - Google Patents

Abstract

PURPOSE:To provide a writing bureau, which has a damping mechanism to reduce the impact force caused by the rotary top board when it is in contact with the moving body during the operation of turning downward the rotary top board to be in a horizontal usable state, whose structure is simple and does not interfere with operation when used, and in which damping force can easily be adjusted. CONSTITUTION:A rotary top board and a moving body 6 that is slidingly pulled out from a desk main body 1 to support the rotary top board in a horizontal state, are interlocked. A sliding bar 20 is mounted to the side of a fixed board 19 installed in a line to the moving body 6, by fixing fixtures 21 attached to both ends of the sliding bar 20. A sliding body 22 capable of adjusting the frictional resistance, is slidably mounted on the sliding bar, and the opposite ends of a stay 23 are pivotally attached to the sliding body and the moving body. Hereat, the angle between the sliding bar and the stay, is set to be small in the condition where the rotary top board is turned upward and the moving body is stored in the desk main body 1, and to become larger, as the rotary top board is turned downward and the moving body is projected from the desk main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called writing bureau in which a top plate is rotatably provided with respect to a desk body, and is stored in a state of standing on the front surface of the desk body when the top plate is not used. It is about a desk called.

[0002]

2. Description of the Related Art Hitherto, as a writing bureau of this type, for example, Japanese Utility Model Publication No. 57-330 and Japanese Utility Model Publication No. 5 have been used.
There is one described in Japanese Patent Publication No. 8-87538. The structure of the rotating part of the top plate in these lighting bureaus is such that the rotating top plate is rotatably fixed to the front end part of the fixed top plate fixed inside the desk body by a hinge or the like, and The movable body is slidably pulled forward from the desk body below the table, and the rotary top plate and the movable body are connected to each other by a connecting rod, so that the rotary top plate can be rotated and pulled out forward. It is configured such that the forward sliding movement of the body is interlocked with each other. In other words, when the rotating top plate is tilted forward, the lower surface of the rotating top plate is supported in a substantially horizontal state by the moving body that is slid out and pulled forward from the desk body, and the rotating top plate and the fixed top plate are supported. And forms a continuous wide top plate surface, and when the rotating top plate is stored in a state of standing on the front surface of the desk body, the moving body is also stored in the desk body.

As described above, in the normal lighting bureau, when the rotating top plate is tilted forward from the state of standing on the front surface of the desk body, the movable body is pulled out from the desk body to the front and the rotating top plate is accordingly pulled. As described above, when the rotating top plate is tilted toward the front of the desk main body as described above, the top plate suddenly drops and violently collides with the upper surface of the moving body slid out of the desk main body, causing a large There is a risk of not only making an impact sound and damaging each member such as the top plate due to the impact, but also pinching fingers or the like between the dropped rotating top plate and the moving body supporting the top plate. . Therefore, there is a structure in which the rotating top plate and the desk body are connected to each other by a stay or the like to restrict the rotating operation of the rotating top plate to prevent the falling.
In this way, when the rotating top plate and the desk body are connected by a stay or the like, there is a problem that the stay is located between the rotating top plate and the desk body, which is an obstacle when using the desk. is there.

[0004]

SUMMARY OF THE INVENTION In view of the above situation, the present invention is to solve the problems in which the rotating top plate and the rotating top plate which is slid out from the desk body are supported horizontally. In a lighting bureau that is linked with a moving body, the impact force when the rotating top plate comes into contact with the moving body during an operation of rotating the rotating top plate downward to realize a horizontal use state is performed. An object of the present invention is to provide a lighting bureau that has a softening braking mechanism, has a simple structure, does not interfere with the use of a desk, and can easily adjust the braking force.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a rotating top plate which is attached to a desk main body in accordance with a downward rotating operation of the rotating top plate. Is a lighting bureau in which a movable body that is freely drawn back and forth below the table protrudes forward from the desk body and supports a rotating top plate, and a sliding rod is attached to a fixed plate arranged in parallel with the movable body. Fixing tools attached to both ends of the stay are horizontally installed and slidably attached to the sliding rods, the slide bodies of which frictional resistance can be adjusted, and both ends of the stays are attached to the slide bodies and the moving body. It is pivotally attached, and the angle formed by the sliding rod and the stay is small when the moving top is turned up and the moving body is stored in the desk body. The lighting bureau is set so that it becomes larger as the moving body projects from the desk body. You configure.

Here, it is preferable that one end of the stay is pivotally attached to a central portion of the movable body.

In addition, a box-shaped moving body having a detachable drawer is provided on both sides of a partition plate which is opened at the bottom and is provided in the central portion, and fixed plates are arranged in parallel below the moving body. A sliding rod is laterally provided on the upper surface of the fixed plate corresponding to the lower surface open portion of the movable body, which is one side portion of the partition plate, and an operation portion capable of adjusting the frictional resistance force is provided on the front surface side of the slide body. It is a more preferable embodiment that the stay is provided, and both ends of the stay are pivotally attached to the slide body and the partition plate.

[0008]

In the lighting bureau of the present invention having the above-mentioned contents, when the rotating top plate is rotated downward and tilted to the front of the desk main body, the movable body is moved by the rotating operation of the rotating top plate. It is slid out to the front of the main body to support the rotating top plate in a substantially horizontal state, but when the moving body moves forward from the desk body, one end is pivotally attached to the moving body via a stay. Then, the slide body moves against the braking force along the sliding rod that is laterally provided on the fixed plate that is arranged in parallel with the movable body. Here, the angle formed by the sliding rod and the stay is small in the state where the movable body is stored inside the desk body by rotating the rotating top plate upward, and the angle is formed by rotating the rotating top plate downward. Is set to increase as it protrudes from the desk body, so that as the rotating top plate approaches horizontal, that is, as the moving body moves forward,
The angle formed between the sliding rod and the stay gradually increases, the component force of the tension along the stay in the direction orthogonal to the axial direction of the sliding rod increases, and the sliding friction resistance increases, and the sliding force of the tension increases. The component force of the moving rod in the axial direction becomes smaller, the braking force becomes larger, and the impact when the rotating top plate collides with the moving body is softened.

Further, since one end of the stay is pivotally attached to the central portion of the moving body, a braking force acts on the central portion of the moving body when the sliding is pulled out, so that the left and right sides of the moving body are balanced. It is possible to pull out well.

In addition, a box-shaped moving body having a detachable drawer is provided on both sides of a partition plate whose lower surface is opened and which is provided in the central portion, and fixed plates are arranged below the moving body in parallel. A sliding rod is laterally provided on the upper surface of the fixed plate corresponding to the lower surface open portion of the movable body, which is one side portion of the partition plate, and an operation portion capable of adjusting the frictional resistance force is provided on the front surface side of the slide body. Since both ends of the stay are pivotally attached to the slide body and the partition plate, in addition to the above-mentioned operation, the slide body front surface is opened from the lower surface opening portion of the movable body in a state where the drawer is removed from the movable body. By operating the side operation portion, the frictional resistance force of the slide body with respect to the sliding rod can be adjusted, and accordingly, the braking force with respect to the rotating operation of the rotating top plate can be adjusted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a writing bureau A according to the present invention. In the drawing, reference numeral 1 is a desk body of the writing bureau A, 2 is both side plates of the desk body 1, and 3 is a sleeve drawer provided at a lower portion of the desk body 1. Above the sleeve drawer 3, a desk is provided. A rotating top plate 4 that also functions as a door that opens and closes the upper front surface of the main body 1 is provided so as to be rotatable and pulled out forward from the desk main body 1. Further, in the example shown in the figure, a storage shelf 5 is installed side by side on the upper part of the desk body 1. Then, the rotating top plate 4 and the lower sleeve drawer body 3
A movable body 6 for horizontally supporting the rotary top plate 4 pulled out from the desk body 1 is provided between the and, so as to be slidably pulled out forward from the desk body 1 in conjunction with the rotary top plate 4. Has been.

As shown in FIGS. 2 to 4, the rotating top plate 4 is rotatable by a hinge 8 at the front end of a fixed top plate 7 fixed between both side plates 2 and 2 of the desk body 1. Is fixed,
When the rotary top plate 4 is rotated downward and tilted forward to be in a horizontal state, a wide top plate surface continuous with the fixed top plate 7 is formed. The moving body 6 has a box-like shape with an open lower surface, has a top plate 6a and side plates 6b provided on both sides of the lower surface, and is mounted on a rail 9 fixed to the side surface of the side plate 6b. The front and rear trochanters 10, 10 attached to the inner surface of the side plate 2 are slidably fitted therein, and both ends are provided between both side portions of the rotating top plate 4 and both front portions of the top plate 6a of the moving body 6. The movable rod 6 is interlocked with the pivoting top plate 4 by the pivotally connected connecting rod 11 so that it can be pulled out forward and backward, and the side plates 6b, 6b are also connected.
A drawer 12 is attached between the two so that it can be pulled out forward.

As shown in FIG. 2, recesses 13 in a stepped state are provided on both lower sides of the rotary top plate 4 for a predetermined length.
The upper end of the connecting rod 11 is rotatably fixed to the fixing member 14 by a rotating shaft 15. On the other hand, the lower end of the connecting rod 11 has a top plate 6 a of the moving body 6.
A rotating shaft 17 is rotatably fixed to a fixing member 16 fixed to the side surface. As shown in the drawing, the connecting rod 11 extends along the side surface of the rotating top plate 4 and the side surface of the moving body 6 when the rotating top plate 4 is erected in a substantially vertical state. It is composed of a horizontal portion 11b and an inclined portion 11c provided between the vertical portion 11a and the horizontal portion 11b.

In the lighting bureau A according to the present invention constructed as described above, when the top plate is not used, the rotating top plate 4 is slightly inclined from the vertical direction to the front surface of the desk body 1 as shown in FIG. Then, the front surface of the desk body 1 is closed by the rotating top plate 4. From this state, when the rotating top plate 4 is tilted forward of the desk body 1, the rotating top plate 4 rotates forward around the hinge 8 connected to the fixed top plate 7. Then, as the rotating top plate 4 rotates, the connecting rods 11 attached to both sides thereof rotate about a rotating shaft 15 with the rotating top plate 4, and the lower rotating shaft 17 moves forward. The movable body 6 pushed to the front and fixed to the rotating shaft 17 slides forward from the desk body 1 while being supported by the trochanters 10 of the desk body 1 at the rails 9 on both sides. Then, as shown in FIG. 5, when the rotating top plate 4 is rotated to a substantially horizontal state, the top plate 6 of the moving body 6 pulled out from the desk body 1 forward.
a The lower surface of the rotating top plate 4 abuts on the support projection 18 made of a cushioning material provided on the upper surface, and the top plate 4 is supported on the moving body 6 in a substantially horizontal state.

Based on the lighting bureau A having such a structure, the gist of the present invention is as shown in FIGS.
As shown in FIG. 10, the fixed plate 1 arranged in parallel with the moving body 6
9. Fixing tools 21 and 2 having sliding rods 20 attached to both ends thereof.
1 is fixed and laterally installed, and a slide body 22 whose frictional resistance can be adjusted is slidably attached to the sliding rod 20.
Both ends of a stay 23 are pivotally attached to the slide body 22 and the moving body 6, and an angle formed by the sliding rod 20 and the stay 23 is increased by rotating the rotating top plate 4 upward. Is the desk body 1
It is set so that it is small when it is stored inside, and it is large when the movable body 6 projects most from the desk body 1 by rotating the rotating top plate 4 downward.

More specifically, the movable body 6 includes the side plates 6
A box-like one having open-out most of the lower surface except the reinforcing plate 24 provided between the front end portions of the lower surfaces of b and 6b and having detachable drawers 12 and 12 on both sides of a partition plate 25 provided in the central portion. A fixed plate 19 is provided in parallel below the movable body 6 and between both side plates 2 and 2 of the desk body 1, and the partition plate 2 is provided.
5, a sliding rod 20 is laterally provided on the upper surface of the fixed plate 19 corresponding to the lower surface open portion of the movable body 6 on one side of
An operation portion 26 capable of adjusting frictional resistance is provided on the front surface side of the slide body 22, and both ends of the stay 23 are pivotally attached to the slide body 22 and the partition plate 25. here,
One end of the stay 23 is directly pivotally attached to the slide body 22,
A hinge 28 rotatably attached to the other end by a pivot 27 is fixed to the lower end of the side surface of the partition plate 25 near the front.
In this embodiment, the braking mechanism described above is provided on one side of the partition plate 25, but it is also possible to provide the same braking mechanism on both sides of the partition plate 25 symmetrically.

As shown in FIG. 9, the structure for adjusting the frictional resistance force of the slide body 22 with respect to the slide rod 20 is such that the slide rod 20 is slidably inserted into the hollow slide body 22 as shown in FIG. , The pad 2 arranged inside the slide body 22
Pressing 9 to the side surface of the sliding rod 20 by a screw shaft 31 provided so as to expose the head portion 30 as the operation portion 26 on the front surface side of the slide body 22 and capable of screwing back and forth, and changing the pressing force. This is a structure for adjusting the frictional resistance against sliding. In the present embodiment, the screw head 30 that is rotated by a driver is illustrated as the operation unit 26, but it may be constituted by a lever, a handle, a knob, a butterfly bolt, or the like that can be directly rotated by a finger.

According to the present invention having the above-mentioned structure, when the rotating top plate 4 is rotated downward and tilted toward the front of the desk main body 1, the movable body 6 is accompanied by the rotating operation of the rotating top plate 4. Is slid out to the front of the desk body 1 to support the rotating top plate 4 in a substantially horizontal state. When the moving body 6 moves forward from the desk body 1, one end of the moving body 6 is moved. Pivot stay 23
The slide body 22 moves against the braking force along the sliding rod 20 provided laterally on the fixed plate 19 provided side by side on the moving body 6 via the, so that the rotating top plate 4 is brought into a horizontal state. As it approaches, braking is applied to the rotating operation, and the impact force when colliding with the upper surface of the top plate 6a of the moving body 6 pulled out in conjunction with the rotating top plate 4 is relieved. That is, the angle formed by the sliding rod 20 and the stay 23 is small when the rotating top plate 4 is rotated upward and the moving body 6 is stored in the desk body 1, and the rotating top plate 4 is rotated downward. Since the moving body 6 is set to be larger as the moving body 6 projects from the desk body 1 as the rotating top plate 4 approaches the horizontal direction, that is, the moving body 6 is moved.
The angle formed between the sliding rod 20 and the stay 23 gradually increases as the moving rod moves forward, and the component force of the tension along the stay 23 in the direction orthogonal to the axial direction of the sliding rod 20 increases. As the sliding frictional resistance increases, the component force of the tension in the axial direction of the sliding rod 20 becomes smaller and the braking force becomes larger. As a result, when the rotating top plate 4 comes into contact with the moving body 6, the maximum control is exerted. Power is generated.

Further, in order to adjust the braking force with respect to the rotating operation of the rotating top plate 4, first, with the drawer 12 removed from the moving body 6, the slide body 22 of the slide body 22 is opened from the lower opening of the moving body 6. This is done by operating the operation portion 26 provided on the front surface side to adjust the frictional resistance force of the slide body 22 with respect to the sliding rod 20. Temporarily, the braking mechanism composed of the sliding rod 20, the slide body 22 and the stay 23 is provided between the side plate 2 of the desk body 1 and the rotating top plate 4 in the space above the fixed top plate 7. In the case where it is provided, if the frictional resistance of the slide body 22 with respect to the sliding rod 20 is set to an extremely large value by mistake, there is a possibility that the rotating top plate 4 may not be opened while being closed. According to the present invention, even if the rotating top plate 4 is fixed in any rotation state, the adjustment can be redone by removing the drawer 12 from the moving body 6.

In the use state in which the rotary top plate 4 is placed on the upper surface of the moving body 6, the braking force is large even when the rotary top plate 4 is rotated upward, so that it may be unexpectedly used during use. In addition, it also has a secondary effect of preventing the rotation top plate 4 from being lifted.

Moreover, since there is no mechanical structure such as a stay above the fixed top plate 7 as in the conventional case, there is no danger of pinching a finger when the rotary top plate 4 is rotated, and the top plate is not touched. Can be effectively utilized.

FIG. 11 shows another embodiment of the present invention, in which the slide rod 22 is provided on the front side where the slide body 22 moves when the mobile body 6 is pulled out forward. A compression coil spring 32 is wound between the first fixing tool 21 and the second fixing tool 21. In this case, the compression coil spring 32 is compressed between the slide body 22 and the one fixing tool 21 only when the rotating top plate 4 is rotated downward to approach the moving body 6, and a repulsive force against this compression is exerted. As a result, the resistance against the movement of the slide body 22 is further increased, and the impact force due to the collision between the rotating top plate 4 and the top plate 6a of the moving body 6 can be further softened. Further, in the initial stage of rotating the rotating top plate 4 in the horizontal state, the repulsive force of the compression coil spring 32 assists the lifting force of the rotating top plate 4, so that the rotating operation becomes easy. Even when the slide body 22 is not provided with the pad 29, that is, when the frictional resistance force of the slide body 22 with respect to the slide rod 20 is about normal sliding friction, the compression coil spring 32 is moved to the slide rod 20. By adopting the structure wound around, the same effect as the above can be obtained.

[0023]

According to the lighting bureau of the present invention as described above, the following remarkable operational effects are obtained.

According to the first aspect of the present invention, the braking force increases as the rotating top plate approaches the horizontal direction, that is, as the moving body moves forward, and the impact when the rotating top plate collides with the moving body is increased. Can be softened, which reduces the impact noise,
There is less risk of pinching fingers between the rotating top plate and the moving body, and even if they are pinched, there is no risk of injury. In addition, the structure of the braking mechanism is simple and does not interfere with the use of the desk, and the top plate can be effectively used.

According to the second aspect, the left and right of the moving body can be drawn out in a well-balanced manner in accordance with the rotating operation of the rotating top plate, and the rotating operation of the rotating top plate can be smoothly performed without rattling. .

According to the third aspect, in addition to the above-described function and effect, in the state where the drawer is removed from the moving body, the operating portion on the front side of the slide body is operated from the lower opening portion of the moving body,
The frictional resistance of the slide body against the sliding rod can be adjusted, and the braking force with respect to the rotational movement of the rotating top plate can be adjusted, so that the braking force can be adjusted very easily, and the braking force is set to be strong by mistake. However, even if the rotating top plate does not move, it can be easily released.

[Brief description of drawings]

FIG. 1 is a perspective view showing a typical embodiment of a writing bureau according to the present invention.

FIG. 2 is an exploded perspective view showing an interlocking mechanism of a rotating top plate and a moving body in the lighting bureau.

FIG. 3 is a side sectional view showing an essential part of the lighting bureau.

FIG. 4 is a side sectional view of an essential part showing a state in which a rotating top plate of the lighting bureau is pulled out.

FIG. 5 is an abbreviated cross-sectional view of a desk body showing a braking mechanism according to the present invention.

FIG. 6 is a partially vertical front view of the same.

FIG. 7 is a partial vertical sectional side view of the same.

FIG. 8 is a perspective view showing a braking mechanism including a sliding rod, a slide body, and a stay.

FIG. 9 is a simplified cross-sectional view showing a relationship between a sliding rod and a slide body.

FIG. 10 is an explanatory plan view showing the operating principle of the braking mechanism of the present invention.

FIG. 11 is a perspective view showing another embodiment of the braking mechanism.

[Explanation of symbols]

 A lighting bureau 1 desk body 2 side plate 3 sleeve drawer 4 rotating top plate 5 storage rack 6 moving body 6a moving body top plate 6b moving body side plate 7 fixed top plate 8 hinge 9 rail 10 trochanter 11 connecting rod 12 drawer Reference Signs List 13 recessed portion 14 fixing metal fitting 15 rotating shaft 16 fixing metal fitting 17 rotating shaft 18 supporting protrusion 19 fixing plate 20 sliding rod 21 fixing tool 22 slide body 23 stay 24 reinforcing plate 25 partition plate 26 operating portion 27 pivot 28 hinge 29 pad 30 head 31 screw shaft 32 compression coil spring

Claims (3)

[Claims] 1. A movable body, which is provided so as to be able to be pulled out forward and backward below the rotary top plate in association with a downward rotation operation of a rotary top plate rotatably attached to the desk main body, is forward from the desk main body. A lighting bureau projecting to and supporting a rotating top plate, wherein fixing members having sliding rods attached to both ends thereof are fixed to a fixing plate arranged in parallel with the moving body, A slide body whose frictional resistance can be adjusted is slidably attached to the sliding rod, and both ends of the stay are pivotally attached to the slide body and the moving body. Is set to be small when the moving top is turned up and the moving body is stored in the desk body, and is set to be large as the moving top is turned down and the moving body projects from the desk body. A writing bureau that is characterized by 2. The writing bureau according to claim 1, wherein one end of the stay is pivotally attached to a central portion of the moving body. 3. A box-shaped moving body having detachable drawers on both sides of a partition plate whose lower surface is opened and which is provided in the central portion, and fixed plates are arranged in parallel below the moving body. A sliding rod is laterally provided on the upper surface of the fixed plate corresponding to the lower surface open portion of the movable body, which is one side portion of the partition plate, and an operation portion capable of adjusting the frictional resistance force is provided on the front surface side of the slide body. The lighting bureau according to claim 1, wherein both ends of the stay are pivotally attached to the slide body and the partition plate.