JP6467691B1 - Manual rotary table device - Google Patents

Abstract

To achieve a manual rotary table device that is capable of stably rotating a rotary table with a small force while having a simple configuration, and that can significantly reduce costs.
A manual turntable device includes a turntable, an operation handle for rotating the turntable, and a power transmission mechanism for transmitting an operation force of the operation handle to the turntable. I have. The power transmission mechanism 3 has a rotating plate 4 (sprocket) having a plurality of teeth 41 formed on the outer periphery, and the rotary table 1 has a plurality of guide rods 5 arranged at predetermined intervals in the rotation direction. In the vicinity of the outer periphery. The guide rod 5 enters the recess 42 between the tooth portions 41 of the rotating plate 4 at a position facing the rotating plate 4, and when the rotating plate 4 rotates in conjunction with the operation of the operation handle 2, the tooth portion of the rotating plate 4. At 41, the guide rod 5 is pushed and the turntable 1 rotates.
[Selection] Figure 3

Description

  The present invention relates to a rotary table device used for a rotating stage or play equipment, and more particularly to a manual rotary table device that rotates a rotary table by operating an operation handle.

  For example, as shown in Patent Documents 1 and 2 described later, a rotating stage installed in a theater or the like uses a motor as a drive source of the rotary table and rotates the rotary table by driving the motor. It is common. Also, in a merry go round installed in an amusement park or a leisure land, a motor is used as a drive source for a rotary table as disclosed in Patent Document 3, for example.

  However, when a motor is used as a drive source for the rotary table, the overall configuration of the apparatus becomes complicated, resulting in an increase in cost and power consumption. On the other hand, in a rotary stage temporarily installed at an event venue for children, it is sufficient to manually rotate the rotary table without needing to use a motor.

  What constitutes a manual rotary table device is an operation handle and a power transmission mechanism that transmits the rotational force of the operation handle to the rotary table. In this case, by applying the power of the power transmission mechanism to the outer periphery of the rotary table, a large rotational force can be applied to the rotary table even if the force applied to the operation handle is small based on the principle of the lever.

  A typical power transmission mechanism is a gear having a gear. However, when the gears of the power transmission mechanism are meshed with the gears provided on the outer periphery of the rotary table to rotate the rotary table, high accuracy is required for the pitch of each gear. If the pitch is slightly shifted, the gears do not mesh well and the rotary table cannot be rotated smoothly. In particular, when the rotary table is composed of a plurality of table units divided in the rotation direction, gears are provided on the outer periphery of each unit, so even if there is a slight gap between adjacent units, the gear pitch Result in misalignment. In addition, if a gear is provided on the outer periphery of the rotary table, the cost increases significantly in the case of a rotary table having a large diameter.

JP 2003-24657 A JP 2008-240478 A Japanese Patent Application Laid-Open No. 9-56931

  In view of the above-described problems, the present invention realizes a manual rotary table device that is capable of stably rotating a rotary table with a small force and that can significantly reduce costs while having a simple configuration. Is an issue.

The manual rotary table device of the present invention includes a rotary table, an operation handle for rotating the rotary table, and a power transmission mechanism for transmitting an operation force of the operation handle to the rotary table. The power transmission mechanism has a rotating plate having a plurality of teeth formed on the outer periphery, and the rotary table has a plurality of guide rods arranged at predetermined intervals in the rotation direction in the vicinity of the outer periphery. . The guide rod enters the recess between the teeth of the rotating plate at a position facing the rotating plate. When the rotating plate rotates in conjunction with the operation of the operation handle, the guide rod is pushed by the tooth of the rotating plate and rotates. The table rotates. In the present invention, the rotating plate is made of a sprocket having a V-shaped recess, and the guide rod is made of a conveyor wheel having a shaft and a roller.

In the present invention, when the rotating plate (sprocket) is rotated by operating the operation handle, the guide rod (conveyor wheel) near the outer periphery of the rotating table is pushed by the teeth of the rotating plate, and the rotating table rotates. Since the rotary table can be rotated with a small force and it is not necessary to provide a gear on the outer periphery of the rotary table, the configuration is simplified and the increase in cost can be suppressed. In addition, since gear meshing is not used for power transmission from the rotary plate to the rotary table, even if there is some variation in the distance between the guide rods, there is no problem with the rotation of the rotary table. Furthermore, since a motor is not used as a drive source for the rotary table, it contributes to energy saving.

In the present invention, a brake lever for restricting rotation of the rotary table, and operates in conjunction with the operation of the brake lever may be provided with a brake mechanism for limiting the power transmission by the power transmission mechanism. The rotary table may have a caster on its lower surface. Further, the rotary table may be composed of a plurality of table units divided in the circumferential direction.

  According to the present invention, a manual rotary table device capable of stably rotating a rotary table with a small force can be realized with a simple configuration and low cost.

It is a top view of the manual type rotary table apparatus of this invention. It is a side view of the manual type rotary table apparatus of this invention. FIG. 2 is an enlarged view of the vicinity of a power transmission unit in FIG. 1. FIG. 3 is an enlarged view of the vicinity of a power transmission unit in FIG. 2.

  The manual rotary table device of the present invention (hereinafter simply referred to as “rotary table device”) will be described below with reference to FIGS.

  As shown in FIG. 1, the rotary table device A includes a disk-shaped rotary table 1, an operation handle 2 for rotating the rotary table 1, and power transmission that transmits the operating force of the operation handle 2 to the rotary table 1. And a mechanism 3.

  As shown in FIG. 2, the rotary table 1 is connected to a rotary shaft 8 supported by a base 6. When the operating handle 2 is turned, a rotary force is applied via a power transmission mechanism 3 to rotate the rotary table 1. It rotates about the axis 8. As shown in FIG. 1, the rotary table 1 is composed of a plurality of table units 1a divided in the circumferential direction (in this example, divided into eight). Each table unit 1a is connected by a fixing member such as a bolt.

  As can be seen from FIG. 2, there is no installation on the upper surface of the turntable 1 in this example. For this reason, the rotary table device A can be used as a stage around a concert venue, for example. However, the turntable device A of the present invention is not limited to such a rotating stage, but for example, a merry-go-round horse in an amusement park or a coffee cup vehicle is mounted on the upper surface of the turntable 1 to provide an event for children. It can also be used as play equipment installed in a venue or the like.

  A plurality of guide rods 5 arranged at predetermined intervals in the rotation direction are provided on the lower surface near the outer periphery of the turntable 1. As shown in FIGS. 3 and 4, the guide rod 5 has a shaft 51 and a roller 52 that rotates around the shaft 51. As this guide rod 5, a commercially available conveyor wheel can be used.

  As shown in FIG. 2, casters 9 and 10 are provided on the lower surface of the turntable 1. The caster 9 slides on the upper surface of the rail base 7 arranged around the base 6 as the turntable 1 rotates, and the caster 10 slides on the upper surface of the base 6. By these casters 9, 10, the rotary table 1 smoothly rotates around the rotary shaft 8. The base 6 is also provided with a caster 11 for moving the base 6 together with the rotary table 1.

  As shown in FIGS. 3 and 4, the operation handle 2 includes a grip portion 21 and a handle body 22. The power transmission mechanism 3 includes a frame 30, a handle shaft 31, a first bevel gear 32, a second bevel gear 33, and the rotating plate 4. One end of the handle shaft 31 is connected to the handle body 22. The other end of the handle shaft 31 is connected to the first bevel gear 32. A second bevel gear 33 is connected to the first bevel gear 32. The second bevel gear 33 is connected to a gear shaft 34 formed integrally with the sprocket shaft 35.

  The rotating plate 4 is connected to the sprocket shaft 35. Hereinafter, the rotating plate 4 is referred to as a sprocket 4. As shown in FIG. 3, a plurality of tooth portions 41 are formed on the outer periphery of the sprocket 4, and V-shaped concave portions 42 are formed between the tooth portions 41. The guide rod 5 provided on the rotary table 1 enters the recess 42 between the teeth 41 of the sprocket 4 at a position facing the sprocket 4. In a state where the guide rod 5 enters the recess 42, a space (so-called “play”) is formed between the guide rod 5 and the tooth portion 41.

  The power transmission mechanism 3 further includes a brake lever 12 for restricting the rotation of the turntable 1, a brake mechanism that operates in conjunction with the operation of the brake lever 12 and limits power transmission by the power transmission mechanism 3. Is equipped. The brake mechanism is composed of a cutting bolt 13, a stopper bolt 14, and a flange member 15.

  The brake lever 12 is connected to the cutting bolt 13 in a screw hole 13 a formed at one end of the cutting bolt 13. A leg portion of the stopper bolt 14 is screwed into the other end of the cutting bolt 13. The head of the stopper bolt 14 is made of rubber. The dimensioning bolt 13 is a bolt in which a screw is formed over the entire length, and is inserted into a screw hole formed in the bracket 16. For this reason, when the brake lever 12 is rotated about the cutting bolt 13 as an axis, the cutting bolt 13 moves in the axial direction. The flange member 15 is coupled to the handle shaft 31 and is knurled on the outer periphery.

  Next, the operation of the rotary table device A will be described. When the handle 21 of the operation handle 2 is gripped by hand and the handle main body 22 is rotated, the handle shaft 31 connected to the handle main body 22 rotates. The rotation of the handle shaft 31 causes the first bevel gear 32 to rotate, and the rotation of the first bevel gear 32 is transmitted to the second bevel gear 33 so that the second bevel gear 33 also rotates. When the second bevel gear 33 rotates, the gear shaft 34 and the sprocket shaft 35 integrated therewith rotate, and the sprocket 4 connected to the sprocket shaft 35 rotates in a direction corresponding to the rotation direction of the operation handle 2.

  As described with reference to FIG. 3, the guide rod 5 provided on the rotary table 1 enters the recess 42 of the sprocket 4, so that when the sprocket 4 rotates, the guide rod 5 is pushed by the teeth 41 of the sprocket 4. As a result, the turntable 1 rotates. The rotation speed of the turntable 1 changes according to the rotation speed of the operation handle 2.

  Further, after the use of the rotary table device A is finished, the brake lever 12 is operated to restrict the rotation of the rotary table 1. Specifically, when the brake lever 12 is rotated in a predetermined direction, the cutting bolt 13 is moved in the axial direction as described above, and the rubber constituting the head of the stopper bolt 14 coupled to the cutting bolt 13 is a flange. It is pressed against the outer periphery of the member 15. At this time, since the outer periphery of the flange member 15 is knurled, the frictional force between the stopper bolt 14 and the flange portion 15 increases. For this reason, even if the operation handle 2 is operated, the handle shaft 31 does not rotate and the sprocket 4 does not rotate, so that the turntable 1 can be prevented from rotating carelessly.

  According to the embodiment described above, the guide rods 5 are arranged in the vicinity of the outer periphery of the turntable 1 at a predetermined interval, and the guide rods 5 are configured to enter the recesses 42 of the sprocket 4. When the sprocket 4 is operated to rotate, the guide rod 5 is pushed by the tooth portion 41 of the sprocket 4 and the turntable 1 rotates. For this reason, the rotary table 1 can be stably rotated with a small force, and since it is not necessary to provide a gear on the outer periphery of the rotary table 1, the configuration becomes extremely simple, and an increase in cost can be suppressed. In particular, the cost can be greatly reduced by using general-purpose parts such as the above-mentioned commercially available conveyor wheel as the guide rod 5. Further, since no motor is used as the drive source of the rotary table 1, there is a great merit in terms of energy saving.

  Further, since gear meshing is not used for power transmission from the sprocket 4 to the rotary table 1 and there is play between the guide rod 5 and the tooth portion 41 (FIG. 3), the arrangement pitch of the guide rods 5 Even if there is some variation, the variation is absorbed by the play, and the rotation of the turntable 1 is not hindered. For this reason, when the turntable 1 is composed of a plurality of divided table units 1a as in this example, the turntable 1 can be reliably rotated even if there is a slight gap between adjacent units. Can do.

The rotary table apparatus A described above is an example, and the present invention is not limited to this. For example, configurations such as the dynamic force transmission mechanism 3 and the brake mechanism is not limited to those shown, it may be other configurations. In the above-described example, the rotary table 1 is configured by the 8-division table unit 1a. However, the number of divisions is not limited to 8 and can be arbitrarily selected, and a configuration in which the rotary table 1 is not divided is employed. You can also. In addition, various embodiments can be employed without departing from the spirit of the present invention.

A Manual rotary table device 1 Rotary table 1a Table unit 2 Operation handle 3 Power transmission mechanism 4 Sprocket (rotary plate)
41 Tooth part 42 Concave part 5 Guide rod 51 Shaft 52 Roller 9, 10 Caster 12 Brake lever 13 Dimensional bolt (brake mechanism)
14 Stopper bolt (brake mechanism)
15 Flange member (brake mechanism)

Claims (4)

A rotating table,
An operation handle for rotating the rotary table;
A power transmission mechanism that transmits an operation force of the operation handle to the rotary table;
The power transmission mechanism has a rotating plate having a plurality of teeth formed on the outer periphery,
The rotary table has a plurality of guide rods arranged at predetermined intervals in the rotation direction in the vicinity of the outer periphery,
The guide rod enters the recess between the teeth of the rotating plate at a position facing the rotating plate,
In the manual rotary table device in which the rotary plate rotates in conjunction with the operation of the operation handle, the guide rod is pushed by the tooth portion of the rotary plate, and the rotary table rotates .
The rotating plate is a sprocket in which the concave portion is formed in a V shape,
The manual rotary table device , wherein the guide rod is a conveyor wheel having a shaft and a roller that rotates about the shaft . A brake lever for restricting rotation of the rotary table;
2. The manual rotary table device according to claim 1, further comprising a brake mechanism that operates in conjunction with an operation of the brake lever and restricts power transmission by the power transmission mechanism. The rotary table, characterized in that it comprises a caster on the underside, manual rotary table apparatus according to claim 1 or 2. The manual rotary table device according to any one of claims 1 to 3 , wherein the rotary table includes a plurality of table units divided in a circumferential direction.

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