JPS6132421Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary table on which a display device of a computer, etc. is rotatably placed.

Desks are often arranged around a small computer placed on a table, and the table is often made to rotate so that multiple people can use the computer together.

It is conceivable to add a sliding plate to such a rotary table that can be freely pulled out from the front and place a keyboard, etc. thereon to make it more convenient to use, but when the keyboard is pulled out, the center of gravity moves forward. Since the table is offset, there arises a problem that the table cannot be rotated smoothly.

The present invention aims to provide a rotary table that allows smooth rotation even when the center of gravity of the equipment on the rotary table is biased toward the outer periphery. It is an object of the present invention to provide a rotary table having an engaging portion that can be positioned at a rotation angle of .

The present invention will be described in detail below based on an illustrated embodiment.

1 is a circular substrate made of a steel plate, and this substrate 1
A shaft 2 is provided protruding from the center of the upper surface, and a female thread 2a is carved into the upper end of the shaft 2.

3 is a radial bearing, which has an annular shape and is attached to the shaft 2 above.
It is rotatably fitted on the outside.

A thrust bearing 4 is composed of a horizontal disk 4a and a plurality of steel balls 4b that are rotatably supported by the disk 4a and arranged concentrically. A shaft hole 4c bored in the radial bearing 3 is inserted into the radial bearing 3.

Reference numeral 5 denotes a rectangular support plate, which has a shaft hole 5a bored in its almost central part, which is externally fitted and supported by the shaft 2 on the base plate, and whose lower surface has a steel ball 4b of the thrust bearing 4. It is butt-supported.

The long side of the support plate 5 is slightly longer than the disk 4a, and the support plate 5 protrudes outside the disk 4a.
A pair of protruding pieces 5b are provided on the lower surface of the holder.

A stopper 1a consisting of a pair of cut and raised pieces is provided on the substrate 1 so as to face these protruding pieces 5b.

Therefore, in the support plate 5, the protruding piece 5b is the stopper 1a.
By being locked to, the range of rotation in the left and right direction is restricted.

A rectangular plate-shaped stand 6 is horizontally arranged on the support plate 5 and is integrally fixed to the support plate 5 with a plurality of screws 7. A male screw 8 is inserted through a shaft hole 6a bored in the base 6 corresponding to the shaft 2, and is screwed into the female thread 2a, so that the base 6 is rotatably mounted on the base plate 1.

As shown in FIG. 1, on the rear outer periphery of the stand 6,
A frame material 6b forming a forward U-shaped hedge is fixed,
This prevents the equipment placed on the mounting table 6 from falling off.

Furthermore, a guide frame 6c is fixedly attached to the upper surface of the front edge of the table 6, which is shaped like an upward U and faces in the front-rear direction.

As clearly shown in FIG. 2, 9 is a horizontal slide plate, and a downward U-shaped slide frame 9a, which is fixed to the lower surface of the plate and faces in the front-rear direction, is slidably fitted into the guide frame 6c. There is. Note that the slide plate 9 is prevented from falling off the mounting base 6 by front and rear stoppers (not shown).

10 is a handle provided protruding from the front edge of the slide plate 9.

As shown in FIG. 2, a plurality of ball bearings 11 each containing a steel ball 11a rotatably housed in a case 11b are mounted on the lower surface of the front and rear edges of the table 6. The ground plane of 11a is the substrate 1
By being in contact with the upper surface of the base 6, the base 6 is rotatably supported also at its outer peripheral edge.

As shown in FIG. 3, a circular hole 12 is bored at a desired location in the intermediate portion near the front of the table 6, and a bottomed cylindrical case 13 is inserted into the circular hole 12 from below.
is inserted.

A small hole 13a is bored in the bottom wall of the case 13, and a slider 14 having a hemispherical engagement projection 14a on the lower surface is inserted through the small hole 13a.
It is inserted into the circular hole 12 from above.

A flange portion 14b is connected to the upper edge of the slider 14,
The circumferential surface of this flange portion 14b is designed to slide on the inner surface of the case 13.

A female thread 13b is formed on the inner periphery of the opening edge of the case 13, a male thread 15 is screwed into the female thread 13b, and a coil spring 16 is inserted between the male thread 15 and the slider 14. Thus, the male thread 15
By adjusting the screwing amount of the slider 14
The biasing force of the coil spring 16 against the substrate 1, that is, the sliding resistance force of the mounting base 6 against the substrate 1 can be adjusted.

On the substrate 1, there is an engagement piece for positioning, which has an engagement hole 17b in the center of an engagement portion, that is, a truncated conical thin plate 17a, so as to detachably engage with the slider 14. 17 is attached.

As shown in FIG. 1, a plurality of engaging pieces 17 are arranged so as to correspond to the locus of the engaging protrusion 14a around the shaft 2. As shown in FIG.

The rotary table A according to the present invention device configured as described above is used by being placed on a support desk B via an elastic member C for vibration prevention and anti-slip.

Therefore, in order to use the rotating stand A according to the present invention in an office or the like, as shown in FIG.
Place keyboard E on top.

When the handle 10 is gripped and the table 6 is rotated in one direction, the table 6 rotates around the shaft 2 while being supported by the thrust bearing 4 and the ball bearing 11, and the slider 14 rotates. , engagement protrusion 14
a and the engaging piece 17 repeatedly engage and disengage intermittently while rotating over the substrate 1, and are stopped at a position where one protruding piece 5b of the support plate 5 abuts one stopper 1a. .

Even when the table 6 is rotated to the other side, it can be rotated similarly until the other protruding piece 5b abuts the other stopper 1a.

If the stand 6 is stopped at the desired position where the engagement protrusion 14a and the engagement piece 17 are engaged, the stand 6 will not easily rotate when using a computer, etc., and the keyboard E will be held in a stable state. can be used.

As explained in detail above, according to the device of the present invention, the mounting table is pivoted horizontally rotatably to the shaft erected at the center of the horizontal board, and the lower surface of the periphery of the mounting table is mounted on a ball bearing. Since it is supported, even if the center of gravity shifts to the periphery due to the movement of a keyboard or the like under the table, the table can be rotated without any problem.

Furthermore, an engaging protrusion is provided on the lower surface of the table, and a plurality of engaging portions are provided on the base plate, which can be freely engaged with and detached from the engaging protrusion. Since the mating portions engage to ensure positioning, it can be easily used as a rotating stand when a keyboard or the like is used by multiple people.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is a vertical sectional view, and FIG. 3 is a second
FIG. 2 is a vertical cross-sectional view showing only the main part of the figure in an enlarged manner. 1... Board, 2... Shaft, 3... Radial bearing,
4... Thrust bearing, 4b... Steel ball, 5... Support plate, 6... Mounting stand, 6a... Shaft hole, 6b... Frame material,
6c...Guide frame, 7...Screw, 8...Male thread,
9...Slide plate, 10...Handle, 11...Ball bearing, 11a...Steel ball, 14a...Engaging protrusion, 15...Male screw, 16...Coil spring, 1
7... Engagement part, A... Rotating stand, B... Support desk,
C...Elastic member, D...Display device, E...
…keyboard.

Claims (1)

[Scope of utility model registration request] A mounting base is pivotally mounted to a shaft erected at the center of a horizontal board so as to be freely rotatable in the horizontal direction, and the lower surface of the peripheral edge of the mounting base is supported by a ball bearing that rolls on the board, and the mounting base is An engaging protrusion is provided at a proper position on the lower surface of the board, and a plurality of positioning engaging parts that can be freely engaged and disengaged from the engaging protrusion are arranged at intervals on the upper surface of the board at locations corresponding to the locus of the engaging protrusion. A rotating stand that is characterized by: