JP3411552B2 - Turntable - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary table on which an article is placed and rotated by driving a motor.

[0002]

2. Description of the Related Art A conventional turntable for exhibiting products while slowly rotating them has a circular top plate rotatably arranged on a base ring, and a motor is connected to the top plate. Is configured. The rotation speed of the top plate can be changed by controlling the voltage of the motor, incorporating a transmission, etc., but this leads to a high cost, and the total height of the rotary base becomes large by incorporating these devices. was there. The present invention clarifies a turntable that solves the above problems.

[0003]

In the turntable of the present invention, a circular top plate (2) is rotatably mounted on a base ring (1), and the top plate (2) is rotationally driven in the base ring (1). A rotary table provided with a drive unit (5), wherein the drive unit (5) is a base ring.
A slide base (4) is provided slidably and positionably on a rail (3) provided between the inner surfaces of the ring in (1), and a top plate (2) is mounted on the slide base by a spring (49). A roller (46) that is biased by pressure and a motor (44) that rotates the roller are mounted on the lower surface of the roller, and the roller (46) is a slide base.
A slide base that slides on the diameter line of the top plate (2) by the slide of (4) and is rotatable in a plane orthogonal to the diameter line.
It is attached to (4).

[0004]

[Operation and effect] When the roller (46) is rotated by the motor (44), the top plate is caused by friction between the roller (46) and the top plate (2).
(2) rotates. Slide the slide base (4) and rotate the roller (46) on the rotation center side of the top plate (2),
The rotation speed of (2) becomes fast, and when the roller (46) is rotated near the outer periphery of the top plate (2), the rotation speed of the top plate (2) becomes slow.
The roller (46) rotates in a plane orthogonal to the diameter line of the top plate (2) at any position on the diameter line of the top plate (2).
The rotation of (46) can be efficiently transmitted to the top plate (2), and the roller (46)
It is possible to reduce unnecessary friction between the top plate (2) and the top plate (2) as much as possible, and suppress a reduction in wear of the roller.

As described above, by applying the roller (46) to the top plate (2) at any position on the diameter line of the top plate (2),
Since the rotation speed of (2) can be adjusted, the device for adjusting the voltage of the motor, the speed change device, etc. can be omitted as in the prior art, and the cost can be reduced, and the height of the turntable for incorporating these devices is high. Therefore, the total height of the turntable can be reduced.

FIG. 1 is a bottom view of the turntable, and FIGS. 2 and 3 are
It is the side view which fractured | ruptured a part of rotary base seen from the 90 different direction. The turntable has a circular top plate (2) rotatably mounted on a circular short cylindrical base ring (1), and the top plate (2) is rotated by a drive device (5) provided in the base ring (1). It is what makes me.

As shown in FIG. 2, the upper end of the base ring (1) is an annular rail (11) having an upper surface opening.
A round-bottomed guide groove (10) is formed at the center of the width of the rail around the rail. A round-bottomed guide groove (20) is formed around the top plate (2) around the lower surface of the top plate (2) corresponding to the guide groove (10) of the base ring (1). Base ring (1)
A row of balls (12) is interposed between the guide groove (10) and the guide groove (20) of the top plate (2) to reduce the rotational resistance of the top plate (2). The row of balls maintains a constant space between adjacent balls by a retainer (13).

The outer peripheral edge of the annular rail (11) of the base ring (1) has a retaining portion (11a) which is obliquely bent outward,
(2) The downward outer peripheral edge of the annular rail (11) has a retaining portion (1
A hooking portion (21) is formed inwardly so that the hooking portion (21) can be hooked on 1a). With the annular rail (11) and the top plate (2) in contact with the row of balls (12), the retaining portion (11a) and the catching portion are provided.
There is a vertical play space between (21).

The drive unit (5) spans a straight rail (3) between the inner surfaces of the base ring (1), a slide base (4) slidably provided on the rail, and the slide base (4). A rubber roller (46) that abuts the top plate (2) to frictionally rotate the top plate (2) and a motor (44) that rotationally drives the roller are mounted.

The rail (3) is formed into a hollow rod having a rectangular cross section, and is fixed to the base ring (1) parallel to the top plate (2) at a position slightly off the center of the base ring (1). Slit groove (31) along the entire length of the surface facing the center of the ring (1)
Has been established. 2 in the slit groove (31) of the rail (3)
Two nuts (32) (32) are slidably and non-removably arranged.

The rail (3) and the nuts (32) (32) of the embodiment
The combination is sold on the market under the trade name "Nejikkushisutemu" manufactured by Kyoshin Denki Co., Ltd., and the standard length rail (3) is cut into a required length for use.

The slide base (4) is mounted on the support plate (41) slidably and positionably mounted on the rail (3), and the pivot (4
It is formed by attaching an oscillating plate (42) so as to be able to approach and separate from the top plate (2) by rotating up and down around a center (3).

The support plate (41) is positioned on the rail (3) by screwing two bolts (6) penetrating the plate into the nuts (32) (32) on the rail (3). Fixed. When the bolt (6) is loosened, the nut (32) can slide on the slit groove (31),
That is, the support plate (41) can also slide on the rail (3), and when the bolt (6) is tightened, the nut and the support plate (41) are fixed on the rail. Since the nut (32) is prevented from rotating only by sliding on the rail (3), the bolt can be loosened or tightened from the head side of the bolt.

A mounting piece (40) is formed by cutting and raising the supporting plate (41), a pivot (43) is fixed to the mounting piece (40), and is orthogonal to the rail (3) by the pivot (43). The rocking plate (42) is supported in the plane so as to be vertically rotatable. Swing plate (42)
The swing plate (4) in the direction in which the roller (46) abuts the lower surface of the top plate.
A spring (49) for urging 2) is connected, and an adjustment bolt (47) for adjusting the amount of approach of the plate to the top plate side is also connected.

The adjusting bolt (47) is screwed through the support plate (41) so that the tip end is in contact with the end face of the rocking plate (42). Has been. A roller (46) described later pushes up the top plate (2) and lifts the top plate.
Float diagonally so that (2) slightly separates from the ball row (12),
Moreover, the retaining portion (11a) on the base ring (1) and the top plate (2)
The angle of the oscillating plate (42) is adjusted by the adjusting bolt (47) so that there is a gap between the hooking portion (21) and the catching portion (21).

The oscillating plate (42) is provided with a motor (44) and a roller (46) linked to the motor, and a rotary shaft of the roller (46).
(45) is in a plane parallel to the rail (3) and orthogonal to the top plate (2) including the diameter line X of the top plate (2). Therefore, the slide base
When (4) is slid on the rail (3), the roller (46) moves on the diameter line of the top plate (2).

The switch (7) of the motor (44) is a base ring.
It is provided on the outer surface of the peripheral wall of (1).

Then, an article (not shown) is placed on the top plate (2). The inclination of the top plate (2) is corrected by the weight of the article, and the bottom surface of the top plate comes into contact with the row of balls (12). When the roller (46) is rotated by the motor (44), the top plate (2) is rotated by the friction between the roller (46) and the top plate (2). Roller (46) is spring (49)
Since the top plate (2) is urged in a direction to lift the top plate (2), slip between the roller (46) and the top plate (2) is prevented, and the rotation of the roller (46) can be efficiently transmitted to the top plate (2). . roller
When the (46) is rotated on the rotation center side of the top plate (2), the top plate (2)
The rotation speed of the table becomes faster, and when the roller (46) is rotated near the outer periphery of the table (2), the rotation speed of the table (2) becomes slow.

In order to move the roller (46), first, the adjustment bolt (47) is tightened, and the swing plate (42) is rotated about the pivot shaft (43) in the direction of lowering the roller (46) to move the roller (46) to the top plate (2). Away from. Next, the bolts (6) attaching the slide base (4) to the rail (3) are loosened, and the slide base (4) is slid on the rail (3). Once the roller (46) is in place, the bolt
Tighten (6) and loosen the adjustment bolt (47) to bring the roller (46) into contact with the lower surface of the top plate (2). Loosening and tightening of the bolt (6) can be done from one direction, and workability is good.

Since the roller (46) rotates in a plane orthogonal to the diameter line X of the top plate (2) at any position, the roller (46) can be efficiently rotated. This can be transmitted to the top plate (2), and unnecessary friction between the roller (46) and the top plate (2) can be reduced as much as possible, and the reduction in wear of the rollers can be suppressed.

In carrying out the present invention, as shown by the chain double-dashed line in FIG. 1, another drive unit (5a) opposite to the drive unit (5) is provided on the rail (3), and Base drive
(5) The top plate (2) can be rotationally driven by (5a).

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 is a bottom view of a turntable.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 is a plan view of a roller support portion.

FIG. 5 is a front view of a roller support portion.

FIG. 6 is a side view of a roller support portion.

[Explanation of symbols]

(1) Base ring (2) Top plate (3) Rail (4) Slide stand (44) Motor (46) Roller

Claims (2)

(57) [Claims] 1. Rotation in which a circular top plate (2) is rotatably mounted on a base ring (1), and a drive device (5) for rotationally driving the top plate (2) is provided in the base ring (1). The drive device (5) is provided with a slide base (4) slidably and positionably on a rail (3) provided between inner surfaces of the base ring (1) in the base ring (1), Spring on slide (49)
A roller (46) biased by pressure and a motor (44) for rotating the roller are mounted on the lower surface of the top plate (2) by means of the slide table (4), and the roller (46) slides on the top plate (4). 2)
A rotary table which is slidable on the diameter line of and is rotatably mounted on a slide table (4) in a plane orthogonal to the diameter line. 2. The slide base (4) is mounted on a support plate (41) which is positioned and fixed to the rail (3) by means of a pivot (43).
2) is attached to the lower surface of the top plate (2) so as to be able to approach and separate, and the roller (46) and the motor (44) are arranged on the swing plate (42) so that the roller (46) contacts the lower surface of the top plate. The adjusting bolt (47) is connected to the swing plate (42) for biasing the swing plate (42) in a contacting direction with a spring and for adjusting the amount of approach of the plate to the top plate side. The turntable described in.