JPH08336431A - Stopper device for mobile table - Google Patents

Abstract

PURPOSE: To provide a stopper device for a mobile table which positively and forcefully stops the movement of the mobile table or a chair and at the same time, adjusts its height. CONSTITUTION: This stopper device for a mobile table with a castor 6 mounted on a pier stud 4 consists of a device body connectable to the pier stud 4 and first and second operating levers 23, 24 supported in a vertically turning fashion in the device body. In addition, a cam pin 30 is set in a freely movable manner in the turning area of both levers 23, 24 in the device body, and both levers 23, 24 are arranged on the pin 30 in such a way that the former can be engaged with the latter. Further, a stopper 36 is set in the device body in a vertically movable manner, and the upper end of the stopper 36 is formed so that it can be engaged with the second operating lever, while the lower end of the stopper 36 is formed so that it can be engaged with a floor surface 46.

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 or the like, which surely and strongly restrains the movement of a movable table, a chair or the like, and whose height position can be adjusted easily.

[0002]

2. Description of the Related Art Generally, casters are attached to a movable table or chair, and as means for holding the moving position,
A stopper structure is provided. For example, in Japanese Utility Model Laid-Open No. 61-115705, a locking metal fitting is swingably attached to a caster attached to the lower end of a pedestal of a movable table, the metal fitting is operated, and an opening edge of the locking metal fitting is used as a running surface of the caster. Engagement prevents the casters from rotating.

However, in this conventional structure, when the caster functions as a caster, the caster is placed in line contact with the floor surface, and only a small static friction force is obtained, so that the movement of the table cannot be reliably held. There is a problem that the engagement between the locking metal fittings and the casters is easily released due to vibration or shock when the table is used, and the table moves.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem, reliably and strongly restrains the movement of a movable table, a chair, and the like, and makes it possible to easily adjust the height position thereof. An object of the present invention is to provide a stopper device such as a rotary table.

[0005]

Therefore, a stopper device for a movable table or the like according to the present invention is a stopper device for a movable table or the like in which casters are attached to the pedestals, and a device body connectable to the pedestals is provided. , The first and second operation levers are rotatably supported inside the main body, and a cam pin is movably provided in a rotation range of the both levers inside the apparatus main body, and the both levers are attached to the pins. The stopper is provided so as to be engageable, and the stopper is provided in the main body of the apparatus so as to be movable up and down, the upper end of the stopper is engageable with the second operation lever, and the lower end of the stopper is engageable with the floor surface. , The movement of movable tables and chairs is surely and strongly stopped. Further, according to the present invention, the stopper can be projected downward more than the distance between the lower end of the stopper and the floor surface, the caster is floated from the floor surface, and the movement of the movable table, chair, etc. is surely stopped. There is. Further, according to the present invention, the stopper can be extended and contracted so that the height position of the movable table, chair or the like can be easily adjusted. According to the present invention, the upper portions of the first and second operation levers can be projected from the apparatus main body so that the stopper can be easily operated. Further, according to the present invention, the second operation lever is provided with a cam hole into which the cam pin can be inserted, and the cam hole is provided with first and second locking portions which can be engaged with the cam pin. Provided in a movable area so that it can be retracted, the stopper can be restrained when the first locking portion and the cam pin are engaged, and the stopper restraint can be released when the second locking portion and the cam pin are engaged, providing a practical stopper structure. are doing.

[0006]

According to a first aspect of the present invention, an apparatus main body that can be connected to a pedestal is provided, and the first and second operation levers are supported in the main body so as to be vertically rotatable. A cam pin is movably provided in the rotation range of both levers, the both levers are arranged to be engageable with the pin, and a stopper is vertically movable inside the main body of the apparatus, and the upper end of the stopper is the second operation lever. Is provided so that the lower end of the stopper can engage with the floor surface, a wide contact area is secured by the lower end surface of the stopper, and a reliable and strong stopping action can be obtained. According to the second aspect of the present invention, the stopper can be projected downward beyond the distance between the lower end of the stopper and the floor surface, the caster is floated from the floor surface, and the movement by the caster is interrupted, so that a reliable stopping action can be obtained. According to the third aspect of the present invention, the stopper can be expanded and contracted, and the height position of the movable table, the chair and the like can be easily adjusted. According to the invention of claim 4, the upper portions of the first and second operation levers can be projected from the apparatus main body, and the stopper can be easily operated. According to a fifth aspect of the present invention, a cam hole into which the cam pin can be inserted is provided in the second operation lever, and first and second locking portions that can be engaged with the cam pin are provided in the cam hole. The stopper structure is provided so that it can be retracted into and out of the moving area of the first stopper, and the stopper can be restrained when the first locking portion and the cam pin are engaged, and the stopper restraint can be released when the second locking portion and the cam pin are engaged. I will provide a.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An illustrated embodiment in which the present invention is applied to a conference table will be described below. In FIG. 1 to FIG. 12, reference numeral 1 denotes a conference table in which a top plate 2 is foldable. Support frames 3 and 3 are fixed to the lower surfaces of both ends of
The frames 3 and 3 are rotatably connected to the upper ends of the columns P.

The pillar P is erected in an oblique shape, and a pillar 4 is connected to the lower end of the pillar P in the front-rear direction. The pillar 4 is formed in a substantially L shape, and casters 5, 6 are formed at the front and rear ends thereof. Is installed. The casters 5 and 6 are provided with a mounting bolt 7, which is inserted into a pedestal 4 or an overhanging frame (not shown) connected to the pedestal 4, and a nut 8 is screwed into and attached to these.

A device main body 9 made of synthetic resin is connected to the rear end of the pedestal 4, and the main body 9 is composed of a pair of main body cores 9a and 9b which are formed so as to be divided into left and right parts. The body cores 9a and 9b are configured substantially the same, which is shown in FIG.
5, a semicircular through hole 10 into which the mounting bolt 7 can be inserted, a substantially roof-shaped recessed hole 11 into which the nut 8 can be accommodated, and a bolt through hole 12 are provided. ,
Insert the bolt 13 into the holes 12 and 12, and insert the nut 1
4 is screwed in to connect the body cores 9a and 9b.

A horizontally long lever accommodating hole 15 is provided at the center of the main body cores 9a and 9b, and the pin hole 1 is formed on the inner surface of the hole 15.
6 and a long groove 17 formed obliquely upward are provided apart from each other, and a laterally long locking piece 18 projects inward at an upper opening edge portion thereof. Further, a semicircular through hole 19 is opened in the bottom surface of the lever accommodating hole 15, and a vertically long guide groove 20 is formed on the inner surface of the hole 19. In the figure, reference numeral 21 denotes a semi-circular locking edge projecting inward at the lower opening edge of the through hole 19.

A pin 22 is inserted into the pin hole 16,
First and second operating levers 23 and 24 are supported on the pin 22 so as to be vertically rotatable. Of these, the first operating lever 23 has a pair of lever plates 25, 25 having a shaft support portion as shown in FIGS. 7 and 8, and the lever plate 25 is formed in a side surface shape of a tabi. The long groove 17 is located in the rotation region of the tip portion.

In the figure, reference numeral 26 is an operation plate 26 in which the upper end portions of the lever plates 25, 25 are connected to each other, and a slip stopper 27 is projected on the surface thereof. The operation plate 26 can be swiveled right above the opening of the lever housing hole 15 and can always be engaged with the opening edge of the lever housing hole 15.

The second operating lever 23 is a lever plate 25, 25.
It has a lever plate 28 having a shaft support at one end as shown in FIGS. 9 and 10, and a substantially heart-shaped cam hole 29 is formed at the center of the lever plate 28. The cam pin 30 is inserted between the long grooves 17, 17.

The cam hole 29 is provided with first and second locking portions 31 and 32 to which the cam pin 30 can be hooked, and these are arranged so that they can be retracted into the long groove 17 when the second operation lever 23 is rotated. ing. Of these, the first locking portion 31 is arranged at one end of the long groove 17, that is, at a position facing the lower side when the stopper functions, and the second locking portion 32 is formed at the lowest position of the cam hole 29. It is arranged below the locking portion 31.

An operation plate 33, which is wider than the plate 28, is provided at the upper end of the lever plate 28, and a slip stopper 3 is provided on the surface thereof.
4 is projected. The operation plate 33 is pivotable just above the opening of the lever accommodating hole 15, and is disposed so as to be able to engage with the locking edges 18 and 18 when it functions as a stopper. 3 in the figure
Reference numeral 5 is a reinforcing rib projecting from both side surfaces of the lever plate 28.

A stopper 36 is housed in the through hole 19 so as to be vertically movable, and the stopper 36 is composed of a cylindrical stopper shaft 37 and a stopper leg 38 whose height position can be adjusted. Has been done. Of these, the stopper shaft 3
7, a disk-shaped flange 39 is provided on the upper end so as to project, and a convex portion 40 that gently protrudes is formed on the upper surface thereof, and can engage with an engaging convex portion 41 provided on the lower surface of the second operation lever 24. Has been

Protrusions 42, 42 engageable with the guide groove 20 are provided in the diametrical direction of the flange 39, and a spring 43 is interposed between the flange 39 and the locking edge 21. Then, the elasticity of the spring 43 biases the stopper 36 upward so that the convex portion 40 is engaged with the engaging convex portion 41.
Can be engaged with.

A threaded portion 44 is formed inside the stopper shaft 37, and a bolt 45 integrated with the stopper leg 38 is screwed into the threaded portion 44 so that the entire length of the stopper 36 can be expanded and contracted and the stopper leg 38 can be adjusted. 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 excess vertical displacement e thereof to enable the pedestal 4 to move. .

In addition, reference numeral 47 in the drawing 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 having an upper end rotatably connected to the front end of the support frame 3 and its lower end. The part is slidably connected to a link 49 fixed to the pedestal 4. 50 is a lock lever for folding the top plate 2.

When the stopper device constructed as described above is assembled 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 this is used as a pedestal. 4 is inserted into the rear end portion and connected. 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 operating lever 23 is accommodated in the lever accommodating hole 15, and the second operation lever 23 is accommodated between the lever plates 25, 25.
The operation lever 24 is inserted, and the pins 22 are inserted into those shaft supporting portions to pivotally support the first and second operation levers 23 and 24. At that time, the cam pin 30 is laid over the long grooves 17, 17 of the main body cores 9a, 9b, and the pin 30
When the bolt 14 is inserted into the cam hole 29, the bolt 13 is inserted into the pin holes 12 and 12, the nut 14 is screwed into the pin hole 12, and the screw 4 is inserted into the screw hole at the rear end of the main body cores 9a and 9b.
7 is screwed in to connect the cores 9a and 9b.

Thus, the first and second operating levers 2
3, 24 and the stopper 36 are assembled into the stopper body 9 at the lower end rear end of the pedestal 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, tighten it, and pedestal 4 and casters 6
And the body cores 9a and 9b are connected together.

The assembled state is as shown in FIG. 12, and before the stopper is operated as shown in the figure, the stopper 36 is biased upward by the elasticity of the spring 43, and the stopper leg 38 is positioned immediately above the floor surface 46. The tongue 21 is engaged, and the convex portion 40 at the upper end thereof is engaged with the engaging convex portion 41 to push up the second operating lever 24.

For this reason, the second operating lever 24 is attached to the pin 22.
Rotate upward around the center, and the operation plate 33 moves the lever receiving hole 1
5, the cam pin 30 is obliquely projected right above the opening of the slot 5, and the cam pin 30 is located at the upper end of the long groove 17 so that the second locking portion 3 of the cam hole 29 is formed.
The lever plate 2 which is engaged with 2 and is stationary just below the pin 30
The tip portions of 5, 25 are positioned so that they can be engaged. Therefore, in this case, the conference table 1 using the casters 5 and 6
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 this is pushed down. By doing so, the second operating lever 24 pivots downward about the pin 22, the engaging projection 41 and the stopper 36 under the 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 that time, the protrusions 42, 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 tip end portions of the lever plates 25, 25, and pushes down the first operation lever 23 so that the pin 2 moves.
The lever 2 is rotated downward in the same direction as the lever 24.

Thus, the first and second operation levers 2
When 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 to approach the lower end of the long groove 17. . And
The operating plate 33 engages with the locking edges 18, 18, and the operating plate 2
6 projects obliquely directly above the opening of the lever accommodating hole 15, and when the first and second operation levers 23 and 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
Restrain the posture and movement of 3,24.

On the other hand, the stopper leg 38 is the second operating lever 2
Landing on the floor surface 46 during the rotation of 4 and then the lever 2
Until the stopper 4 stops rotating, the stopper 36 is pushed down, and the stopper main body 9 is pushed up by the excess vertical displacement e thereof, and the pedestal 4 is moved along with the caster 6 from the floor surface 46 by the above displacement. To surface. This situation is as shown in FIG. 4, 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 wide contact area, and the weight of the table 1 and the spring 4 are attached to the stopper leg 38.
Since the elasticity of No. 3 acts and a strong contact surface pressure is formed, a reliable and large stopping force can be obtained as compared with the conventional stopping method in which the caster and the floor surface are in line contact.

As described above, 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. Further, at that time, if the stopper leg 38 is rotated around the axis of the stopper shaft 37 and the bolt 45 integral with the leg 38 is moved together to adjust the screwing amount with respect to the screw portion 44, the device main body 9 moves up and down. However, the height of the pedestal 4 changes by that amount, 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 placed on the operation plate 26 in the situation of FIG. 4 and is pushed down. By doing so, the first operating lever 23 rotates in the counterclockwise direction in the above figure around the pin 22, and the lever plates 25, 25 move together to move the cam pin 30 to the first locking portion 31.
Is pushed out in the longitudinal direction of the long groove 17 to release the engagement between the pin 30 and the locking portion 31.

Therefore, the stopper 36 is attached to the spring 43.
Of the stopper leg 38 is released from the floor surface 46 to release its stopping action, the second operation lever 24 under engagement with the convex portion 40 is pushed up, and the first locking portion 31 is released. The second locking portion 32 moves to the upper portion of the long groove 17, and instead, the second locking portion 32 moves to the upper end 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, and the stopper leg 38 engages with the locking edge 21, the operation plate 33 projects obliquely directly above the opening of the lever accommodating hole 15, and the operation plate 26
Engage with the opening edge of the lever receiving hole 15.

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

[0034]

As described above, the stopper device such as the movable table according to the present invention is provided with the device main body which can be connected to the pedestal.
The first and second operation levers are supported rotatably in the vertical direction inside the main body, and cam pins are movably provided in the rotation range of the both levers inside the apparatus main body, and the both levers are engaged with the pins. Since the stopper is provided so as to be movable up and down, the upper end of the stopper is engageable with the second operation lever, and the lower end of the stopper is engageable with the floor surface. A wide contact area can be secured by the lower end surface of the stopper as compared with the conventional restraining effect by the line contact between the caster and the floor surface, and a reliable and strong restraining effect can be obtained. Further, according to the present invention, since the stopper can be projected downward more than the distance between the lower end of the stopper and the floor surface, the caster is lifted from the floor surface to stop the movement by the caster, and instead the contact friction by the lower end surface of the stopper is used. By force, a reliable stopping action can be obtained. Further, according to the present invention, since the stopper can be expanded and contracted, the device body is moved up and down, and the pedestal is moved together with the device body,
It is possible to easily adjust the height position of the movable table or chair. Moreover, according to the present invention, since the upper portions of the first and second operation levers can be projected from the apparatus main body, the stopper can be easily operated. The present invention is the second
The operation lever is provided with a cam hole into which the cam pin can be inserted, the cam hole is provided with first and second locking portions which can be engaged with the cam pin, and these both locking portions are provided so as to be retractable in the moving range of the cam pin, Since the stopper can be restrained when the first locking portion and the cam pin are engaged and the stopper restraint can be released when the second locking portion and the cam pin are engaged, a practical stopper structure can be provided.

[Brief description of 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;

4 is a sectional view taken along the line AA of FIG.

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 a cross-sectional view showing the stopper applied to the present invention in an exploded manner.

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

[Explanation of symbols]

 1 Conference Table 4 Leg Pillars 5, 6 Casters 9 Device Main Body 23 First Operation Lever 24 Second Operation Lever 29 Cam Hole 30 Cam Pin 31 First Locking Part 32 Second Locking Part 36 Stopper 46 Floor

Claims (5)

[Claims] 1. In a stopper device such as a movable table having casters attached to pedestals, a device body that can be connected to the pedestals is provided, and the first and second operation levers are vertically rotated inside the body. A cam pin is movably provided in the rotation range of the both levers inside the main body of the apparatus, the both levers are arranged to be engageable with the pin, and a stopper is vertically movable inside the main body of the apparatus. A stopper device such as a movable table, wherein an upper end of the stopper is provided to be engageable with the second operation lever, and a lower end of the stopper is provided to be engageable with the floor surface. 2. A stopper device for a movable table or the like according to claim 1, wherein the stopper can be protruded downward more than a distance between the lower end of the stopper and the floor surface. 3. The stopper according to claim 1, wherein the stopper is adjustable.
Stopper device such as the movable table described. 4. A stopper device for a movable table or the like according to claim 1, wherein upper portions of the first and second operation levers can be projected from the main body of the device. 5. A cam hole into which a cam pin can be inserted is provided in the second operation lever, and first and second locking portions which can be engaged with the cam pin are provided in the cam hole, and both locking portions are moved by the cam pin. The movable type according to claim 1, wherein the stopper is restrained when the first locking portion and the cam pin are engaged, and the stopper restraint can be released when the second locking portion and the cam pin are engaged. Stopper device for tables, etc.