JPH07194435A - Table - Google Patents

Abstract

PURPOSE:To perform adjustment so as to eliminate the shaking of a top board by inclining the engaging plane of a bearing member in a direction to increase a degree of pressurized contact gradually according to the turning of a turning lock member. CONSTITUTION:The engaging plane 7a is inclined in the direction to increase gradually the degree of press contact of the turning lock member 6 on the engaging plane 7a according to the turning of the turning lock member 6 in an engaging direction. Since such structure that the tip part 6b of the turning lock member 6 is pressed by the energizing of a spring, and approaches the engaging plane 7a gradually, and finally, it is connected to the engaging plane 7a when engagement is performed, the rattling of a top board main body 2a to a supporting leg 1 can be prevented from occurring. A connection position adjusting mechanism 10 can connect the tip 6b of the turning lock member 6 at the tip of a bolt member 10b at a desired position. The rattling of the top board can be quite easily prevented from occurring by adjusting the connection position adjusting mechanism 10 even when the tip 6b of the turning lock member 6 is worn due to fraction with the engaging plane 7a and an engaging state is changed due to secular change and the top board 2 begins to rattle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table in which a top plate can be flap-operated.

[0002]

2. Description of the Related Art Conventionally, as a table of this type, for example, as shown in FIG. 12, a top plate De is supported by a pair of left and right supporting legs Le, and the top plate De is held substantially horizontally by a stopper St. It is known that the top plate De can be fixed to the use position by a lock mechanism LM so that the flap operation can be performed between the various use positions and a predetermined standing position. Thus, in the conventional lock mechanism LM, the movable pin Mp is provided so as to project on the side surface of the frame portion of the top plate De pivotally supported by the support leg Le, and the tip end of the support leg Le is formed into a hook shape Lt. Is pivotally attached. Then, a cam surface Ca that slidably contacts the movable pin Mp is formed on the outer edge of the tip of the lock fitting Lt, and the lock fitting Lt is elastically biased in the engagement direction by a spring. In the lock mechanism LM, when the top plate De is rotated in the use position direction, the movable pin Mp first slides on the cam surface Ca of the lock fitting Lt to temporarily lock the lock fitting Lt. The lock fitting Lt can be self-returned by the biasing force of the spring and engaged with the movable pin Mp when the top plate De reaches the use position by retracting in the anti-engagement direction.

[0003]

However, in the case of such a structure, the top plate De is caused by an error in assembly or the like.
Often, there is a difference between the position where is stopped by the stopper St and stops, and the position where the lock mechanism LM prohibits the rotation in the standing direction. In this case, the top plate De is locked by the stopper St and the lock mechanism L.
There is a rattling with the locking position by M, which causes a problem that the usability deteriorates.

Conventionally, in order to solve such a problem, collars having various thickness dimensions are prepared, and these collars are selectively fitted to the outer periphery of the movable pin Mp to cause the above-mentioned rattling. I try to lose it. However, at the position where the top plate De is locked by the stopper St,
There is a problem that a great number of man-hours are required for the work of selecting and assembling an appropriate collar by trial and error so that the lock fitting Lt is tightly engaged with the outer periphery of the collar fitted to the movable pin Mp.

An object of the present invention is to eliminate such a problem.

[0006]

The present invention takes the following means in order to achieve such an object. That is, in the table according to the present invention, the top plate is supported by the pair of left and right supporting legs, and the top plate can be flap-operated between the substantially horizontal use position locked by the stopper and the predetermined standing position. And a table in which the top plate can be fixed to the use position by a lock mechanism, wherein the lock mechanism is rotatably provided on either one of the top plate and the supporting leg. A lock member, a receiving member that is fixed to the other and has an engaging surface with which the rotation lock member engages, and a biasing element that biases the rotation lock member in the direction of engaging the reception member. And an operation lever for operating the rotation lock member in a direction away from the receiving member against the biasing force of the biasing element, and the rotation lock member engages the engaging surface. As it rotates in the direction of Wherein the pressure degree for engaging surfaces of the dynamic locking member are tilted gradually increasing direction.

In order to easily release the engagement between the rotation lock member and the receiving member, a locking position adjustment for locking the rotation of the rotation lock member in the engaging direction at a desired set position. It is preferable to provide a mechanism. Further, from the viewpoint of operability, it is desirable to provide the rotation lock member on the top plate side and the receiving member on the supporting leg side.

Specifically, the rotation lock member is a substantially L-shaped member having its base end pivotally supported on the top plate side and its tip end bent in the engaging direction, and the receiving member is provided on the lower surface as the engaging surface. It is preferable that the engagement surface be inclined so that the engagement surface gradually approaches the rotation trajectory of the tip of the rotation lock member. In consideration of the holding of the top plate in the standing position, it is desirable to provide the upper surface of the receiving member with a recess for holding the tip of the rotation lock member in the standing position.

The rotation lock member of the present invention includes, in addition to the members described above, a base end pivotally attached to the top plate and a pin protruding from the side surface of the tip end portion. May include an engaging surface on the lower surface, and the engaging surface may be inclined so as to gradually approach the rotational trajectory of the pin.

[0010]

With such a structure, the rotation lock member of the lock mechanism bites into the engagement surface as it is rotated in the direction in which it is biased by the biasing element and engages with the receiving member. Thus, the degree of pressure contact with the engaging surface is increased. As a result, the engagement state between the rotation lock member and the receiving member becomes stronger as the rotation lock member rotates in the engagement direction. Therefore, when the rotation lock member attached to one of the top plate and the support leg engages with the receiving member fixed to the other, the top plate is pulled by the support leg and locked by the stopper. Holds in horizontal use position. That is, when the rotation lock member engages with the receiving member, the more it rotates in the engagement direction, the stronger the engagement with the engaging surface of the receiving member. As a result, when the rotation lock member starts to engage with the engagement surface,
The top plate is in weak contact with the stopper, but as the engagement state becomes stronger, the top plate strongly contacts the stopper and acts so as not to easily float from the stopper.

In such a structure, since the rotation lock member is constantly urged in the engagement direction by the urging element, even if the degree of pressure contact with the receiving member is too high, the operating lever is operated. There is a possibility that the match cannot be canceled. Therefore, if the locking position adjusting mechanism is provided, the locking position of the rotation lock member can be set to a desired position and an excessive pressure contact state can be prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The table T supports a top plate 2 by a pair of left and right supporting legs 1, and the top plate 2 is supported between a substantially horizontal use position UP and a predetermined standing position SP which are locked by a stopper 3. It is configured to allow flap operation,
The top plate 2 can be fixed to the use position UP by the lock mechanism LM.

Each supporting leg 1 comprises a base portion 1b which is placed on the floor via casters 1a, and a column portion 1c which is erected on the upper surface of the base portion 1b.
The column portions 1c are joined together by a connecting horizontal member 1d. A fixed bracket 4 for supporting the top plate 2 is fixedly provided on the inner surface of the upper end of each column 1c. A locking bracket 3a for fixing the stopper 3 is fixed to the inner surface of the upper end of the fixed bracket 4.

The top plate 2 is fixed to the bottom face of the top plate 2a, a movable bracket 5 having a U-shaped cross section which is fixed to both ends of the bottom face of the top plate main body 2a and has a downward opening. The movable bracket 5 of the top plate 2 is provided with the front and rear frame members 2b for connecting the movable brackets 5 together.
It is pivotally attached to the fixed bracket 4 of the support leg 1 via c. The movable bracket 5 includes an outer piece portion 5a located outside the top plate body 2a, an inner piece portion 5b located inside, and a connecting portion 5c connecting the outer piece portion 5a and the inner piece portion 5b. The portion 5c is attached to the lower surface of the top plate body 2a,
The fixed bracket 4 is positioned adjacent to the inside of the outer piece 5a. Inside the inner piece portion 5b, a locking bracket 3a, which is fixed to the fixed bracket 4 and has an inverted L shape in a side view, is located, and the stopper 3 is attached to the horizontal piece.

The lock mechanism LM is provided between each supporting leg 1 and the top plate 2, and each lock mechanism LM is a rotation lock member 6 rotatably provided on a movable bracket 5 of the top plate 2. A receiving member 7 fixed to the fixed bracket 4 of the supporting leg 1 and having an engaging surface 7a with which the rotation lock member 6 engages, and a direction in which the rotation lock member 6 engages with the reception member 7. A torsion coil type spring 8 as a biasing element for biasing
And an operating lever 9 for operating the rotation lock member 6 in a direction away from the receiving member 7 against the biasing force of the spring 8. The engagement surface 7a is inclined in a direction in which the degree of pressure contact of the rotation lock member 6 with the engagement surface 7a gradually increases as the rotation lock member 6 rotates in the engagement direction.

More specifically, the rotation lock member 6 has a base end 6
a is pivotally attached to the movable bracket 5 of the top plate 2 via an axis AX, and a tip portion 6b thereof is a substantially L-shape bent in the engaging direction, and the outer piece portion 5a of the movable bracket 5 is penetrated. The operation lever 9 is fixed to the outer end of the shaft AX that is projected outward. Further, the inner end of the axis AX extends inward through the inner piece portion 5b of the movable bracket 5, and the inner ends of the axis AX in the left and right lock mechanisms LM are connected by a connecting pipe CP. The two lock mechanisms LM are interlocked with each other. When the rotation lock member 6 is rotated about the axis AX in the engagement direction, the tip 6b of the rotation lock member 6 abuts at a predetermined position on the engagement surface 7a of the receiving member 7, and the rotation lock member 6 is the same as that position. Engagement surface 7a when rotated in the direction
Are arranged so that they engage with each other by pressing rather than sliding.

The receiving member 7 is the fixed bracket 4 of the supporting leg 1.
Is a thick plate having a thickness larger than the plate thickness of the rotation lock member 6 fixed to the inner surface of the engaging surface 7a formed on the lower surface thereof.
Is inclined so as to gradually approach and intersect the rotation trajectory TT of the tip portion 6b of the rotation lock member 6. That is,
As shown in FIG. 5, the engagement surface 7a has a large inclination on the side where the rotation lock member 6 approaches when viewed from the side surface thereof,
There is a distance from the turning locus TT of the tip portion 6b of the turning lock member 6, but when the turning lock member 6 is turned further in the engaging direction from that position, the distance from the turning locus TT. Is gradually reduced, becomes 0 at a predetermined position, and thereafter, the rotation locus TT intersects and is formed so as to be drawn inside the engagement surface 7a. A locking position adjusting mechanism 10 for locking the rotation of the rotation lock member 6 in the engaging direction at a desired set position is provided on the inner surface of the movable bracket 5. The locking position adjusting mechanism 10 of this embodiment includes a movable bracket 5
The nut member 10a fixed to the
a bolt member 10b screwed into a in a penetrating state, and the rotation locking member 6
The distal end portion 6b of the above can be locked at a desired position. An engaging hole (not shown) for engaging a hexagonal wrench is bored at the base end of the bolt member 10b so that the bolt can be operated from the front side of the table T. Receiving member 7
A concave portion 7b for holding the tip end portion 6b of the rotation lock member 6 when the top plate 2 is rotated to the upright position SP is provided on the upper surface of the.

In FIG. 2, 11 is a shelf plate, and a link 12
Is connected to the movable bracket 5 by means of, and when the top plate 2 is placed in the upright position SP in conjunction with the top plate 2 being changed from the use position UP to the upright position SP, both supporting legs 1
Folded in between. A curtain plate 13 is attached to the tip of the shelf 11 and is connected to the support leg 1 by a link 14 near the lower end. When the top plate 2 is in the use position UP, the curtain plate 13 is located near the front end of the top plate body 2a, and when it is in the upright position SP, the curtain plate 13 moves in conjunction with the shelf plate 11 to move the curtain. The plate 13 is folded forward of the shelf plate 11 so that the plate 13 overlaps the shelf plate 11.

In the above-mentioned structure, in the use position UP in which the top plate 2 is substantially horizontal, the rotation lock member 6 is engaged with the engagement surface 7a of the receiving member 7 at a position where it abuts the bolt member 10b. . That is, the top plate 2 is tilted backward from the upright position SP, and when the top plate 2 becomes nearly horizontal, the operation lever 9
Is operated until it comes into contact with the lower surface of the top plate main body 2a, and the top plate 2 is further tilted down so that the rotation lock member 6 does not collide with the receiving member 7. Then, when the operation lever 9 is released at the position where the top plate 2 is in contact with the stopper 3, the rotation lock member 6 becomes
Since it is biased by the spring 8, it rotates toward the engagement surface 7 a of the receiving member 7. Then, after the sliding movement of the engagement surface 7a, the rotation lock member 6 stops rotation at the position where it abuts the bolt member 10b, engages with the receiving member 7, and the top plate 2 comes into close contact with the stopper 3. Are held almost horizontally. In this case, the position locked by the bolt member 10b is such that the tip portion 6b of the rotation lock member 6 slightly digs into the engagement surface 7a of the receiving member 7, and thus the top plate main body 2a.
Is held in a state of being pulled downward by the rotation lock member 6.

Therefore, no gap is formed between the movable bracket 5 and the stopper 3, and the top plate main body 2a is supported in close contact with the stopper 3 without rattling the support leg 1. Further, when the lock mechanism LM is assembled, the rotation lock member 6 is attached to the movable bracket 5, and the receiving member 7 is attached to the fixed bracket 4, respectively. At the time of engagement, the tip portion 6b of the rotation lock member 6 is attached to the spring 8. Since the structure is such that it is urged to gradually approach the engagement surface 7a, and finally locks on the engagement surface 7a, no specific member is required to adjust the engagement state, and work during this period is performed. Can be simplified and an increase in man-hours can be suppressed. Further, even if the tip end portion 6b of the rotation lock member 6 wears due to friction with the engagement surface 7a and the locking position needs to be changed, the rotation lock member 6 and the receiving member 7 need to be replaced. However, the position can be easily changed by adjusting the locking position adjusting mechanism 10. Therefore, even if the engagement state changes due to aging and the top plate 2 starts to rattle, it is extremely easy. The rattling can be eliminated.

Next, when the top plate 2 is moved to the upright position SP, the operation lever 9 fixed to the rotation lock member 6 is used.
Operation by pulling up on the top plate 2 direction (upward),
The engagement between the rotation lock member 6 and the receiving member 7 is released. In this case, since the rotation lock member 6 moves on the rotation trajectory TT in the direction opposite to that at the time of engagement, the engagement can be released without operating the operation lever 9 largely.
Is biased by the spring 8, the operation lever 9 must be stopped and held at the released position. After releasing this engagement, the top plate 2 is rotated in the upper front direction, and the tip portion 6b of the rotation lock member 6 is placed in the recessed portion 7b of the receiving member 7. As a result, the top plate 2 is supported by the rotation lock member 6 and held at the standing position SP.

8 to 10 show a modification of the locking position adjusting mechanism 10 in which the shape of the receiving member 7 is slightly different from that of the above embodiment, but the engaging surface 7a and the rotation lock member 6 are different from each other. Is basically the same, so the description of that part is omitted.
In the structure shown in FIG. 8, a rectangular parallelepiped locking block 110b having a long hole 110c formed in the center is attached to a mounting bolt 110.
This is an example of attachment to the fixed bracket 4 by a. In the case of this example, the locking block 110b is the mounting bolt 110.
By loosening a, the tip 6a of the rotation lock member 6
The position can be moved in the tangential direction of the rotation trajectory TT of. Therefore, if the locking block 110b is fixed at a position where the rotation lock member 6 is to be engaged with the engagement surface 7a,
The rotation lock member 6 does not engage at a deeper position than necessary, and the engagement surface 7 is necessary and sufficient to prevent the top plate 2 from rattling.
It can be held in a state where it can be easily released while engaging with a.

FIG. 9 shows a disk-shaped locking cam 2
10b and the mounting bolt 210a, the locking cam 2
10b is attached to the fixed bracket 4 at an eccentric position with a mounting bolt 210a. Therefore, when the locking cam 210b is rotated, the distance from the center of rotation about the mounting bolt 210a as the central axis to the position where it abuts against the rotation lock member 6 can be changed. The locking position of the lock member 6 can be adjusted.

In the structure shown in FIG. 10, a substantially horizontal female screw hole 310a is provided in the lower front surface of the receiving member 7, and a bolt member 310b is screwed into the female screw hole 310a. In this example, the bolt member 310b is attached to the table T
By rotating from the front side, the bolt member 310b moves back and forth in the direction of the engaging surface 7a, and the rotation lock member 6 contacts the tip thereof. Therefore, the rotation lock member 6 is stopped from rotating at a desired position, and it is suppressed that the rotation lock member 6 bites into the engagement surface 7a, and it is necessary and sufficient to be engaged and easily engaged. You can cancel the match.

The present invention is not limited to the embodiment described above. For example, as shown in FIG. 11, the rotation lock member 106 is configured such that the base end 106a is pivotally attached to the top plate 102 and the pin 106c is provided to project from the side surface of the tip end portion 106b, and the receiving member 107 is provided. The lower surface may have an engaging surface 107a. In this case, the engagement surface 107a may be inclined so as to gradually approach the rotation trajectory TT of the pin 106c. More specifically, the frame pipe FP is fixed to the lower surface of the top plate 102, the rotating shaft SS is attached to the frame pipe FP, and the rotating shaft S is attached.
An operation lever 109 is attached to the outer end of S. The upper end of the rotary shaft SS is coaxial with the operation lever 109.
The rotation lock member 106, which is fixed to, has a pin 106c protruding outward from the side surface of the tip end portion 106b at the lower end, and is constantly urged toward the receiving member 107 by a spring 108. The receiving member 107 is fixed to the inner surface side of the supporting leg 101, an engaging surface 107a is formed on the lower surface of a bulging portion 107d provided at the substantially vertical center thereof, and a hinge pin HP is provided at the upper end thereof. The top plate 2 is attached so that it can be flapped. When viewed from the side, the engagement surface 107a is formed so as to incline from the upper direction to the lower direction, gradually approaches the rotation trajectory TT of the pin 106c, and then intersects with the rotation trajectory TT. 103
Is a stopper, and 410 is a male screw member that constitutes a locking position adjusting mechanism.

In the other embodiments, as in the above embodiment,
When changing from the use position UP shown in FIG. 2 to the standing position SP, the operation lever 109 is pulled to the top plate 102 side, and the engagement between the pin 106c of the rotation lock member 106 and the engagement surface 107a of the receiving member 107 is released. Then, the top plate 102 can be changed to the standing position SP by rotating the top plate 102 around the hinge pin HP in that state. On the other hand, when the standing position SP is changed to the use position UP, when the top plate 102 is tilted down, the pin 106c comes into contact with the side surface of the receiving member 107, and then the side surface slides downward according to the movement of the top plate 102. It moves and reaches the engaging surface 107a in a state where the top plate 102 is substantially horizontal. After the top plate 102 contacts the stopper 103, the rotation lock member 106 of the pin 106c is urged by the spring 108, so that the pin 106c slides on the engagement surface 107a and contacts the male screw member 410 to stop. To do.

In this way, the engaging surface 107a is connected to the pin 106c.
Slidingly moves to a desired locking position, the rotation lock member 106 pulls the top plate 102 downward, and the frame pipe FP on the lower surface thereof is pressed against the stopper 103. , No gap is formed between them. Therefore, the top plate 102 can be firmly held on the supporting leg 1 without rattling.

Besides, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0030]

As described above in detail, the engagement surface of the receiving member with respect to the engagement surface of the rotation lock member as the rotation lock member rotates in the engagement direction. Since it is inclined in a direction in which the degree of pressure contact gradually increases, the engagement state can be changed depending on where on the engagement surface of the receiving member the rotation lock member engages, and the top plate is pressed against the stopper sufficiently and sufficiently. Therefore, the rattling of the top plate can be eliminated. In addition, the engagement state can be arbitrarily set by changing the locking position on the engagement surface of the rotation lock member, and even if the engagement state changes due to aging of each member, the engagement state can be easily changed. It can be adjusted to eliminate rattling.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of the present invention.

FIG. 2 is a side view when the top plate of the embodiment is in a use position.

FIG. 3 is a side view when the top plate of the embodiment is in a standing position.

FIG. 4 is a rear view showing an enlarged main part of the embodiment.

FIG. 5 is a side view showing an operating state of main parts, omitting a part of the embodiment.

FIG. 6 is a side view showing only a main part when the top plate of the embodiment is in a standing position.

FIG. 7 is an operating principle diagram showing the relationship between the receiving member and the rotation lock member of the embodiment.

FIG. 8 is an enlarged side view of an essential part showing a modified example of the locking position adjusting device of the embodiment.

FIG. 9 is an enlarged side view of essential parts showing a modified example of the locking position adjusting device of the embodiment.

FIG. 10 is an enlarged side view of essential parts showing a modified example of the locking position adjusting device of the embodiment.

FIG. 11 is an enlarged side view showing a main part of another embodiment of the present invention.

FIG. 12 is a side view showing an enlarged main part of a conventional example.

[Explanation of symbols]

 1 ... Support leg 2 ... Top plate 3 ... Stopper 4 ... Fixed bracket 5 ... Movable bracket 6 ... Rotating lock member 7 ... Receiving member 7a ... Engaging surface 8 ... Spring 9 ... Operation lever 10 ... Locking position adjusting mechanism LM ... Lock Mechanism SP ... Standing position UP ... Use position

Claims (6)

[Claims] 1. A top plate is supported by a pair of left and right support legs, and the top plate can be flapped between a substantially horizontal use position locked by a stopper and a predetermined standing position. A table capable of fixing the top plate to the use position by a lock mechanism, wherein the lock mechanism is a rotation lock member rotatably provided on either one of the top plate and the supporting leg, A receiving member that is fixed to the other and has an engaging surface with which the rotation lock member engages, a biasing element that biases the rotation lock member in the direction of engaging the receiving member, and the biasing element. An operating lever for operating the rotation lock member in a direction away from the receiving member against the biasing force of the biasing element, and the rotation lock member rotates the engagement surface in the engagement direction. The engagement of the rotation lock member with movement Table wherein the pressing degree are tilted gradually increasing direction with respect. 2. The table according to claim 1, further comprising a locking position adjusting mechanism for locking the rotation of the rotation lock member in the engaging direction at a desired set position. 3. The rotation lock member is provided on the top plate side, and the receiving member is provided on the supporting leg side.
The listed table. 4. The rotation lock member is of a substantially L-shape having a base end pivotally supported on the top plate side and a tip end bent in an engaging direction, and a receiving member having an engaging surface on a lower surface. The table according to claim 1, 2 or 3, wherein the engagement surface is inclined so as to gradually approach a rotation locus of the tip of the rotation lock member. 5. The table according to claim 4, wherein the receiving member has an upper surface provided with a recessed portion for holding the tip of the rotation lock member in the standing position. 6. A rotation lock member, the base end of which is pivotally attached to a top plate and a pin protruding from the side surface of the tip end portion, and the receiving member having an engaging surface on the lower surface. 4. The table according to claim 1, 2 or 3, wherein the engagement surface is inclined so as to gradually approach the rotational trajectory of the pin.