JP2918476B2 - Stopper device such as movable table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper device for a movable table, a chair, and the like, which reliably and strongly restrains the movement of the movable table, chair, and the like, and whose height can be easily adjusted.

[0002]

2. Description of the Related Art Generally, casters are attached to movable tables and chairs.
A stopper structure is provided. For example, Japanese Utility Model Application Laid-Open No. 61-115705 discloses that a locking bracket is swingably mounted on a caster mounted on a lower end of a pillar of a movable table, the bracket is operated, and an opening edge thereof is formed on a running surface of the caster. Engagement prevents rotation of the casters.

[0003] However, in this conventional structure, the caster is placed in line contact with the floor surface at the time of the stopper function, so that only a small static friction force can be obtained, and not only can the table not be reliably moved, There has been a problem that the engagement between the locking fitting and the caster is easily released due to vibration or impact when the table is used, and the table is moved.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it has been proposed that a movable table or chair can be reliably and strongly restrained from moving and its height can be easily adjusted. An object of the present invention is to provide a stopper device such as an expression table.

[0005]

[SUMMARY OF To this end, the stopper device such as mobile table of the present invention, the stopper device such as a mobile table with attached casters pedestal, a connectable bodies in the pedestal Provided, and the lever is housed inside the main body.
A hole and a long groove are provided, and first and second operations are provided in the lever receiving hole.
The operating lever is supported rotatably in the vertical direction, and the length of the long groove is
The cam pin is movably accommodated in the
A cam hole is provided on the second operation lever to allow the cam pin to be hooked.
The rotation angle of the second operation lever through the cam hole and the cam pin.
The first operating lever can be engaged with the cam pin
And the first and second operation levers can be interlocked.
On the other hand, the inside of the main body faces the rotation area of the second operation lever.
And a stopper is provided so that it can move up and down.
And the upper end of the stopper is
The stopper is provided so as to be engaged with the bar, and the lower end of the stopper is placed on the floor.
The first and second operating levers are provided so as to be disengageable from the surface.
When rotating upward, the stopper is separated from the floor surface,
When the first and second operation levers rotate downward, the stopper is
Allowing contact with the floor surface, and the movement of the movable table and chairs
We are in so that can be performed to ensure the restraint. Further, the present invention, the stopper, and movable downward direction over the distance between the lower end and the floor of the stopper before the stopper operation, the caster is floated from the floor, mobile tables and the like chairs The movement is surely stopped. Further, the present invention makes it possible to adjust the height of the movable table, chair and the like easily by adjusting the height of the stopper. The present invention, the upper portion of the first and second operating levers allows projecting from the body, and to easily perform so the operation of the stopper. The present invention also cams hole provided cam pin and first and second engaging portions engageable, first locking the second locking portion
The first and second locking portions are arranged below the cam portion.
Provided movably in the movement area of the pin, always keep the cam pin
Engage with the locking part, and separate the lower end of the stopper from the floor surface.
On the other hand, when the stopper is operated, the cam pin is
In this case, the lower end of the stopper is brought into contact with the floor to provide a practical stopper structure.

[0006]

[For work] of claim 1 invention, the provided couplable bodies in pedestal, provided lever receiving hole and the elongated groove in the interior of the body, wherein
Insert the first and second operating levers vertically into the lever receiving holes
The cam pin is supported rotatably and the cam pin is moved in the length direction of the long groove.
Movably housed and a cam is attached to the second operation lever.
A cam hole is provided to allow a pin to be hooked.
The rotation angle of the second operation lever is regulated through the
A first operation lever is provided on the pin so as to be engageable, and the first and second operation levers are provided.
And the second operation lever can be interlocked,
The stopper is moved up and down with the part facing the rotation area of the second operation lever.
Movably provided to urge the stopper upward,
The upper end of the stopper is provided so as to be engageable with the second operation lever.
And the lower end of the stopper is detachably attached to the floor.
When the first and second operation levers rotate upward,
The stopper is separated from the floor surface, and the first and second operations are performed.
The stopper can be grounded to the floor when the lever rotates downward
And, a reliable line of movement and stop of such mobile tables and chairs
For example Ru. The invention according to claim 2 is characterized in that the stopper is
Operation downward direction over the distance between the lower end and the floor in front of the stopper moves
And casters float from the floor to casters.
And a reliable stopping action can be obtained. Claim 3
According to the invention, the height of a movable table, a chair or the like can be easily adjusted by making the stopper extendable and contractible. A fourth aspect of the present invention, the upper portion of the first and second operating levers allows projecting from the body, conveniently perform the operation of the stopper. The invention of claim 5, cams hole provided cam pin and first and second engaging portions engageable under the first locking portion a second engaging portion
And these first and second locking portions are
It is movably provided in the movement area, and always holds the cam pin in the second locking portion.
To separate the lower end of the stopper from the floor surface.
On the other hand, when the stopper is operated, the cam pin is engaged with the first locking portion,
The lower end of the stopper is grounded to the floor to provide a practical stopper structure.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conference table in which the present invention is applied to a conference table; FIG. The support frames 3, 3 are fixed to the lower surfaces of both ends of the
The frames 3, 3 are rotatably connected to the upper end of the column P.

The pillar P is erected obliquely, and a pillar 4 is connected to the lower end thereof in the front-rear direction. The pillar 4 is formed in a substantially L-shape, and casters 5, 6 are provided at the front and rear ends thereof. Is installed. The casters 5 and 6 are provided with mounting bolts 7, which are inserted into the pillars 4 or overhang frames (not shown) connected to the pillars 4, and nuts 8 are screwed into these.

[0009] The rear end portion of the pillar 4, the synthetic resin of the present body 9
Are connected to each other, and the main body 9 is constituted by a pair of main body cores 9a and 9b formed so as to be dividable left and right. Body core 9
The a and 9b are substantially the same and can accommodate a semicircular through hole 10 into which a mounting bolt 7 can be inserted and a nut 8 at one end inserted into the pillar 4 as shown in FIGS. A substantially roof-shaped concave hole 11 and a bolt insertion hole 12 are provided. A bolt 13 is inserted into the hole 12, and a nut 14 is screwed into the hole 13 to connect the main body cores 9a and 9b.

At the center of the main body cores 9a and 9b, a horizontally long lever receiving hole 15 is provided.
6 and a long groove 17 formed obliquely upward are provided apart from each other, and a horizontally long locking piece 18 protrudes inward from an upper opening edge thereof. Further, a semicircular through hole 19 is opened in the bottom surface of the lever housing hole 15, and a vertically long guide groove 20 is formed in the inner surface of the hole 19. In the figure, reference numeral 21 denotes a semicircular locking edge that protrudes inward at the lower opening edge of the through hole 19.

A pin 22 is inserted into the pin hole 16,
First and second operation levers 23 and 24 are supported by the pin 22 so as to be rotatable in the vertical direction. Among them, the first operation lever 23 has a pair of lever plates 25, 25 each having a shaft support as shown in FIGS. 7 and 8, and the lever plate 25 is formed in a substantially tabular side shape. The long groove 17 is located in the rotation area of the tip.

In the figure, reference numeral 26 denotes an operation plate connecting the upper end portions of the lever plates 25, 25, and a non-slip 27 protrudes from the surface thereof. The operation plate 26 is rotatable just above the opening of the lever receiving hole 15 and is normally engaged with the opening edge of the lever receiving hole 15.

[0013] The second operation lever 2 4 lever plate 25, 25
9 and 10, which has a lever plate 28 provided with a shaft support at one end, and a substantially heart-shaped cam hole 29 is formed at the center of the lever plate 28, as shown in FIGS. A cam pin 30 extending between the long grooves 17, 17 is inserted into the groove.

[0014] the cam hole 29, the first and second locking portions 31, 32 capable latched cam pins 30 are provided, which are laterally near the longitudinal groove 17 when the rotation of the second operating lever 2 4
It is arranged so that it can move beside . The first locking part 3
1 is disposed at one end of the long groove 17 at the time of the stopper function, that is, at a position facing the lower side, and the second locking portion 32 is provided with the cam hole 2.
9 and is disposed below the first locking portion 31.

At the upper end of the lever plate 28, an operation plate 33 wider than the plate 28 is provided.
4 are protruded. The operation plate 33 is rotatable just above the opening of the lever accommodating hole 15, and is arranged so as to be able to engage with the locking edges 18 when the stopper function is provided. In the figure, 3
Reference numeral 5 denotes reinforcing ribs protruding from both side surfaces of the lever plate 28.

A stopper 36 is accommodated in the through hole 19 so as to be vertically movable. The stopper 36 comprises a cylindrical stopper shaft 37 and stopper legs 38 which can adjust the height position of the shaft 37. Have been. Of these, stopper shaft 3
7 has a disk-shaped flange 39 protruding from the upper end thereof, and a gently protruding convex portion 40 is formed on the upper surface thereof, and can engage with the engaging convex portion 41 provided on the lower surface of the second operation lever 24. Has been.

In the diameter direction of the flange 39, projections 42, 42 engageable with the guide groove 20 are provided, and a spring 43 is interposed between the flange 39 and the locking edge 21. Then, the stopper 36 is urged upward by the elasticity of the spring 43 so that the projection 40 is engaged with the engagement projection 41.
Can be engaged.

A screw portion 44 is formed inside the stopper shaft 37, and a bolt 45 integral with the stopper leg 38 is screwed into the screw portion 44 so that the entire length of the stopper 36 can be adjusted to extend and contract. The lower surface can be grounded to the floor surface 46. The stopper 36 can be moved up and down more than the distance between the stopper leg 38 and the floor surface 46 before the stopper operation, and pushes up the stopper main body 9 by an amount corresponding to the excessive vertical displacement e, thereby enabling the pillar 4 to move. .

In addition, reference numeral 47 in the figure denotes a screw screwed into a screw hole at the rear end of the main body cores 9a and 9b, and 48 denotes a curtain plate whose upper end is rotatably connected to the front end of the support frame 3. The portion is slidably connected to a link 49 fixed to the pillar 4. 50 is a lock lever for folding the top plate 2.

When assembling the stopper device configured as described above to the conference table 1, the first and second operation levers 23 and 24 and the stopper 36 are assembled inside the main body cores 9a and 9b, and these are mounted on the pillars. 4 and inserted into the rear end. First, the stopper shaft 37 is inserted into the through holes 19 of the main body cores 9a and 9b, the stopper legs 38 are arranged outside, and the spring 43 is inserted between the flange 39 and the locking edge 21.

Next, the first operation lever 23 is accommodated in the lever accommodation hole 15, and the second operation lever 23 is located between the lever plates 25, 25.
The operation lever 24 is inserted, and the pin 22 is inserted into the shaft support portion to rotatably support the first and second operation levers 23 and 24. At this time, the cam pins 30 are laid over the long grooves 17, 17 of the main body cores 9a, 9b.
Is inserted into the cam holes 29, the bolts 13 are inserted into the pin holes 12, 12, and the nuts 14 are screwed into the bolts 13, and the screws 4 are inserted into the screw holes at the rear ends of the body cores 9a, 9b.
7 is screwed in to connect the cores 9a and 9b.

Thus, the first and second operation levers 2
The stopper body 9 having the stoppers 3, 24 and the stopper 36 assembled is inserted into the rear end of the lower end of the pillar 4, the mounting bolt 7 of the caster 6 is inserted into the through hole 10 from below, and the nut 8 is attached to the screw shaft. Screw it in and tighten it, and the pillar 4 and caster 6
And the body cores 9a, 9b are connected together.

FIG. 12 shows the assembled state. Before the stopper operation as shown in the figure, the stopper 36 is urged upward by the elasticity of the spring 43, and the stopper leg 38 is positioned directly above the floor surface 46. The second operating lever 24 is pushed up by engaging with the retaining edge 21 and engaging the convex portion 40 at the upper end thereof with the engaging convex portion 41.

For this reason, the second operation lever 24 is
The operation plate 33 rotates upward about the lever housing hole 1.
5, and the cam pin 30 is located at the upper end of the long groove 17, and the second locking portion 3 of the cam hole 29 is formed.
2 and a stationary lower lever plate 2 just below the pin 30.
5, 25 tip parts are located so that engagement is possible. Therefore, in this case, the conference table 1 by the casters 5 and 6 is used.
Can be moved.

Next, when the conference table 1 is to be stopped at a fixed position, a foot is placed on the protruding operation plate 33 and the foot is pushed down. By doing so, the second operation lever 24 pivots downward around the pin 22, the engagement protrusion 41 and the stopper 36 under engagement are pushed down against the elasticity of the spring 43, and the stopper leg 38 is moved. It descends toward the floor surface 46. At this time, the projections 42 move along the guide grooves 20, 20 to prevent the stopper 36 from swinging.

With the rotation of the second operation lever 24, the cam pin 30 engages with the distal ends of the lever plates 25, 25 and pushes down the first operation lever 23 to move the first operation lever 23 into the pin 2 position.
The lever 2 is rotated downward in the same direction as the lever 24 around the center 2.

Thus, the first and second operation levers 2
When the pivots 3 and 24 rotate, the second locking portion 32 of the cam hole 29 moves below the long groove 17, and instead, the first locking portion 31 moves downward and approaches the lower end of the long groove 17. . And
The operation plate 33 is engaged with the locking edges 18, 18, and the operation plate 2
6 projects obliquely right above the opening of the lever accommodating hole 15, and when the first and second operating levers 23, 24 stop rotating, the first locking portion 31 is located at the lower end of the long groove 17,
The cam pin 30 is engaged with the locking portion 31, and the lever 2
Constrain the posture and movement of 3, 24.

On the other hand, the stopper leg 38 is
4 lands on the floor surface 46 during the rotation, and then the lever 2
The stopper 36 is pushed down until the rotation of the caster 4 stops, and the stopper main body 9 is pushed up by the excessive vertical displacement e to move the pillar 4 to move the caster 6 from the floor surface 46 by the displacement. To surface. This situation is as shown in FIG. 4, in which the movement by the casters 6 is cut off, the bottom surface of the stopper leg 38 is pressed against the floor surface 46, and the contact frictional force causes
The conference table 1 is reliably stopped.

In this case, the entire bottom surface of the stopper leg 38 comes into contact with the floor surface 46 to obtain a large contact area, and the stopper leg 38 has the weight of the table 1 and the spring 4
The strong elasticity of the contact surface is formed by the elasticity of No. 3, so that a more reliable and larger stopping force can be obtained as compared with the conventional stopping method in which the caster and the floor surface are in linear contact.

The stopping action of the stopper 36 is maintained under the condition that the second operating lever 24 is restrained by the cam pin 30 and the stopper 36 is restrained by the lever 24 as described above. At this time, when the stopper leg 38 is rotated about the axis of the stopper shaft 37 and the bolt 45 integral with the leg 38 is moved to adjust the amount of screwing to the screw portion 44, the apparatus body 9 moves up and down. Then, the height of the pedestal 4 is changed, and the height position of the top plate 2 can be easily adjusted.

Next, when releasing the stopping action of the stopper 36, the foot is put on the operation plate 26 in the situation of FIG. 4 and the foot is pushed down. By doing so, the first operation lever 23 rotates counterclockwise in the upper drawing centering on the pin 22, and the lever plates 25, 25 move together, thereby causing the cam pin 30 to lock the first locking portion 31.
The pin 30 is pushed out of the long groove 17 in the longitudinal direction to release the engagement between the pin 30 and the locking portion 31.

Therefore, the stopper 36 is connected to the spring 43
And the stopper leg 38 is separated from the floor surface 46 to release the stopping action, and the second operating lever 24 engaged with the convex portion 40 is pushed up, so that the first locking portion 31 is moved. The second locking portion 32 moves to the upper end of the long groove 17 instead of moving to the upper portion of the long groove 17, and the cam pin 30 engages with the locking portion 32. This situation is as shown in FIG. 12, in which the stopper leg 38 is engaged with the locking edge 21, the operation plate 33 projects obliquely right above the opening of the lever housing hole 15, and the operation plate 26
Engages with the opening edge of the lever accommodation hole 15.

In the embodiment, the present invention is applied to the conference table 1. However, the present invention is not limited to this and can be applied to mobile chairs, furniture, office equipment, industrial machines, and the like.

[0034]

As described above the stopper device such as a mobile table of the present invention, provided a possible connection bodies in pedestal, provided lever receiving hole and the elongated groove in the interior of the body, the lever housing
The first and second operation levers can be turned up and down in the holes
Support and movably store the cam pin in the length direction of the long groove.
And put a cam pin on the second operation lever.
A cam hole that can be stopped is provided, and the cam hole and the cam pin
(2) The rotation angle of the operation lever is restricted, and the first
An operation lever is provided to be engageable, and the first and second operation levers are provided.
The operation lever can be interlocked, while the second operation is
The stopper is set up and down so that it can
To urge the stopper upward, and
Is provided so as to be engageable with the second operation lever, and
The lower end of the stopper is provided so as to be detachable from the floor,
And when the second operation lever is rotated upward, the stopper is placed on the floor.
And lowering the first and second operating levers downward.
Since the stopper can be grounded to the floor when moving, a wider contact area can be secured by the lower end surface of the stopper as compared with the conventional stopping action by line contact between the caster and the floor.
Can, together with obtain a sure real and strong restraining action, moving
It is possible to securely move and stop the table and chairs
I can . Also, the present invention provides a method of operating the stopper by operating the stopper.
Because was movably <br/> ability to down direction than the distance between the lower end and the floor of the front of the stopper, the caster by floating from the floor Disconnect movement by casters, it is possible to obtain a reliable restraint action . Furthermore, in the present invention, the stopper
Et al., This body is moved up and down, this by Dodo pedestals can simply adjust the height position of such movable tables and chairs. Moreover, the present invention can be from allowed protruding top of the first and second operating lever from the body, conveniently to operate the stopper. The present invention, the cam pins and the first and second engaging portions engageable provided cams hole, second
The locking portion is disposed below the first locking portion, and the first and the second locking portions are arranged.
And the second locking portion is movably provided in the movement area of the cam pin,
When the cam pin is engaged with the second locking portion,
While the end is separated from the floor, the campi
Engage in to the first locking portion, the lower end of the stopper on the floor
Since it is grounded , a practical stopper structure can be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a conference table to which the present invention is applied, showing a situation when a stopper is stopped.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a plan view showing an example of a main body core on one side applied to the present invention.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a front view showing an example of a first operation lever applied to the present invention.

FIG. 8 is a bottom view of FIG. 7;

FIG. 9 is a plan view showing an example of a second operation lever applied to the present invention.

FIG. 10 is a front view of FIG. 9;

FIG. 11 is an exploded sectional view showing a stopper applied to the present invention.

FIG. 12 is a cross-sectional view showing a stopper released state of a stopper applied to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 conference table 4 pedestal 5, 6 caster 9 device body 23 first operation lever 24 second operation lever 29 cam hole 30 cam pin 31 first locking portion 32 second locking portion 36 stopper 46 floor

Claims (5)

(57) [Claims] 1. A stopper device such as a movable table in which a caster is attached to a pillar, a main body connectable to the pillar is provided, and a lever receiving hole and a long groove are provided inside the body .
Put the first and second operating levers up and down in the lever receiving hole
And a cam pin in the longitudinal direction of the long groove.
Is movably accommodated and the second operation lever is
A cam hole is provided to allow a cam pin to be hooked.
Restricting the rotation angle of the second operation lever through the
A first operating lever is provided to be engageable with the cam pin.
The first and second operation levers can be interlocked while the book
Position the stopper inside the body facing the rotation area of the second operation lever.
It is provided so that it can move up and down, and urges the stopper upward.
The upper end of the stopper can be engaged with the second operation lever.
And the lower end of the stopper is detachably attached to the floor surface.
When the first and second operation levers rotate upward,
The stopper is separated from the floor surface, and the first and second operations are performed.
A stopper device for a movable table or the like , wherein the stopper can be brought into contact with the floor when the lever is rotated downward . Wherein said stopper, the stopper operation before scan <br/> stopper of the lower end of the stopper device, such as a mobile table according to claim 1, wherein the movable downward direction over the distance between the floor surface. 3. The stopper according to claim 1, wherein the stopper is adjustable in expansion and contraction.
A stopper device for the movable table described above. 4. A stopper device such as a mobile table according to claim 1, wherein you can protrude from the body of the upper portion of the first and second operating levers. 5. The cams hole provided cam pin and first and second engaging portions engageable, below the first locking portion a second engaging portion
And the first and second locking portions are moved by a cam pin.
Provided movably in the movement area, always keep the cam pin on the second locking part
Engaging the stopper to separate the lower end of the stopper from the floor surface.
On the other hand, when the stopper is operated, the cam pin is engaged with the first locking portion,
The stopper device according to claim 1, wherein a lower end of the stopper is grounded to a floor surface .