JP2019100028A - Manual rotary table device - Google Patents

Abstract

To provide a manual rotary table device which can stably rotate a rotary table with a small force while having a simple configuration and which achieves a significant cost reduction.SOLUTION: A manual rotary table device is provided with a rotary table 1, an operation handle 2 for rotating the rotary table 1, and a power transmission mechanism 3 for transmitting the operation force of the operation handle 2 to the rotary table 1. The power transmission mechanism 3 has a rotary plate 4 (sprocket) in which a plurality of tooth parts 41 are formed on the outer periphery, and the rotary table 1 has a plurality of guide rods 5 arranged at predetermined intervals in the rotational direction near the outer periphery. The guide rod 5 enters a recess 42 between the tooth parts 41 of the rotary plate 4 at a position facing the rotary plate 4. When the rotary plate 4 is rotated in conjunction with the operation of the operation handle 2, the guide rod 5 is pushed by the tooth parts 41 of the rotary plate 4 to rotate the rotary table 1.SELECTED DRAWING: Figure 3

Description

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

  For example, as shown in Patent Documents 1 and 2 listed below, 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 the case of Merry Go Round installed in amusement parks, leisure lands and the like, as shown in, for example, Patent Document 3, a motor is used as a drive source of the rotary table.

  However, when a motor is used as the drive source of the rotary table, the configuration of the entire apparatus becomes complicated, which increases the cost and power consumption. On the other hand, in the case of a rotary stage or the like temporarily installed at an event site for children, it may be sufficient to manually rotate the rotary table without having to use a motor.

  What is needed to construct a manual rotary table device is an operating handle and a power transmission mechanism for transmitting the rotational force of the operating handle to the rotating table. In this case, by causing the power of the power transmission mechanism to act on the outer periphery of the rotary table, a large rotational force can be given to the rotary table based on the principle of leverage even if the force applied to the operating handle is small.

  A typical power transmission mechanism is a gear having a gear. However, when the gears of the gears of the power transmission mechanism are engaged with the gears provided on the outer periphery of the rotary table to rotate the rotary table, high precision is required for the pitches of the gears. Even if the pitch is slightly offset, the gears do not mesh well and the rotary table can not be rotated smoothly. In particular, when the rotary table is composed of a plurality of table units divided in the rotational direction, the gears are provided on the outer periphery of each unit, so even if there is a slight gap between adjacent units, the gear pitch It is a result that a gap occurs. Further, providing a gear on the outer periphery of the rotary table greatly increases the cost in the case of a large diameter rotary table.

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

  SUMMARY OF THE INVENTION In view of the above problems, the present invention realizes a manual rotary table device which can stably rotate a rotary table with a small force and can significantly reduce the cost while having a simple configuration. Is an issue.

  The manual rotary table apparatus according to the present invention includes a rotary table, an operating handle for rotating the rotating table, and a power transmission mechanism for transmitting an operating force of the operating handle to the rotary table. The power transmission mechanism has a rotary 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 rotational direction near the outer periphery . The guide rod enters the recess between the teeth of the rotary plate at a position facing the rotary plate, and when the rotary plate rotates in conjunction with the operation of the operation handle, the guide rod is pushed by the teeth of the rotary plate to rotate The table rotates.

  In the present invention, when the rotary plate is rotated by operating the operation handle, the guide rod in the vicinity of the outer periphery of the rotary table is pushed by the teeth of the rotary plate, and the rotary table is rotated. At the same time, since it is not necessary to provide a gear on the outer periphery of the rotary table, the configuration is simplified and an increase in cost can be suppressed. In addition, since gear engagement is not used for power transmission from the rotary plate to the rotary table, the rotation of the rotary table is not disturbed even if there is some variation in the distance between the guide rods. Furthermore, since a motor is not used for the drive source of the rotary table, it contributes to energy saving.

  In the present invention, a sprocket having a V-shaped concave portion can be used as the rotating plate, and a conveyor wheel having a shaft and a roller can be used as the guide rod. In addition, it is possible to provide a brake lever for restricting the rotation of the rotary table, and a brake mechanism that operates in conjunction with the operation of the brake lever to restrict power transmission by the power transmission mechanism. The turntable may be provided with casters on its lower surface. In addition, the rotary table may be configured of a plurality of table units divided in the circumferential direction.

  According to the present invention, a manual rotary table apparatus capable of stably rotating the 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. It is an enlarged view of power transmission part vicinity of FIG. It is an enlarged view of power transmission part vicinity of FIG.

  Hereinafter, a manual type rotary table apparatus (hereinafter, simply referred to as "rotary table apparatus") of the present invention will be described with reference to FIGS.

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

  The rotary table 1 is connected to a rotary shaft 8 supported by a base 6 as shown in FIG. 2, and by turning the operation handle 2, a rotational force is given via the power transmission mechanism 3 to rotate It rotates around an 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 (eight divisions in this example). Each table unit 1a is connected by a fixing member such as a bolt.

  As can be seen from FIG. 2, in the present example, there is no installation on the upper surface of the turntable 1. For this reason, the turntable device A can be used, for example, as a stage around a concert hall. However, the rotary table apparatus A according to the present invention is not limited to such a revolving stage, and, for example, an event for children is mounted on the upper surface of the rotary table 1 with a horse on a merry-go-round in an amusement park or a coffee cup vehicle. It is also possible to use as a play tool installed in a hall etc.

  On the lower surface near the outer periphery of the rotary table 1, a plurality of guide rods 5 arranged at predetermined intervals in the rotational direction are provided. As shown in FIGS. 3 and 4, the guide rod 5 has an axis 51 and a roller 52 that rotates around the axis 51. A commercially available conveyor wheel can be used as the guide rod 5.

  As shown in FIG. 2, casters 9 and 10 are provided on the lower surface of the rotary table 1. The caster 9 slides on the upper surface of the rail base 7 disposed around the base 6 as the rotary table 1 rotates, and the caster 10 slides on the upper surface of the base 6. The casters 9, 10 allow the rotary table 1 to rotate smoothly around the rotation axis 8. The base 6 is also provided with casters 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 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 a rotary 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. The second bevel gear 33 is connected to the first bevel gear 32. The second bevel gear 33 is connected to a gear shaft 34 integrally formed with the sprocket shaft 35.

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

  The power transmission mechanism 3 further includes a brake lever 12 for restricting the rotation of the rotary table 1, and a brake mechanism that operates in conjunction with the operation of the brake lever 12 to limit power transmission by the power transmission mechanism 3. Is equipped. The brake mechanism is composed of a cut-off bolt 13, a stopper bolt 14 and a flange member 15.

  The brake lever 12 is connected to the cut-off bolt 13 in a screw hole 13 a formed at one end of the cut-off bolt 13. The leg portion of the stopper bolt 14 is screwed into the other end of the cut-off bolt 13. The head of the stopper bolt 14 is formed of rubber. The cut-off bolt 13 is a bolt formed over the entire length, and is inserted into a screw hole formed in the bracket 16. Therefore, when the brake lever 12 is rotated around the cut-off bolt 13, the cut-off bolt 13 moves in the axial direction. The flange member 15 is coupled to the handle shaft 31, and the outer periphery is knurled.

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

  As described in FIG. 3, the guide rod 5 provided on the rotary table 1 is inserted into the recess 42 of the sprocket 4, so when the sprocket 4 rotates, the guide rod 5 is pushed by the teeth 41 of the sprocket 4. And the turntable 1 is rotated. The rotational speed of the rotary table 1 changes in accordance with the rotational 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 cut-off bolt 13 moves in the axial direction as described above, and the rubber forming the head of the stopper bolt 14 coupled to the cut-off 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 is increased. Therefore, even when the operation handle 2 is operated, the handle shaft 31 does not rotate and the sprocket 4 does not rotate, so that the rotary table 1 can be prevented from rotating inadvertently.

  According to the embodiment described above, the guide rods 5 are arranged at predetermined intervals near the outer periphery of the rotary table 1, and the guide rods 5 enter the recesses 42 of the sprocket 4, whereby the operation handle 2 is formed. When the sprocket 4 is rotated by operation, the guide rod 5 is pushed by the teeth 41 of the sprocket 4 and the rotary table 1 is rotated. Therefore, 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 is extremely simplified, and an increase in cost can be suppressed. In particular, the cost can be significantly reduced by using a general-purpose component such as the above-mentioned commercially available conveyor wheel as the guide rod 5. Furthermore, since a motor is not used as a drive source of the rotary table 1, a merit is also large in terms of energy saving.

  In addition, gear engagement is not used for power transmission from the sprocket 4 to the rotary table 1, and there is a play between the guide rod 5 and the teeth 41 (FIG. 3). Even if there is some variation in the range, the variation is absorbed by the above-mentioned play, and the rotation of the rotary table 1 is not disturbed. For this reason, in the case where the rotary table 1 is configured of a plurality of divided table units 1a as in this example, the rotary table 1 can be reliably rotated even if there is a slight gap between adjacent units. Can.

  The above-described rotary table apparatus A is an example, and the present invention is not limited to this. For example, although the guide rod 5 having the shaft 51 and the roller 52 is used in the above-described example, the guide rod 5 may be a simple columnar rod having no roller. The configurations of the power transmission mechanism 3 and the brake mechanism are not limited to those illustrated either, but may be other configurations. Further, in the example described above, the rotary table 1 is configured of the table unit 1a divided into eight, but the number of divisions is not limited to eight and can be arbitrarily selected, and a configuration in which the rotary table 1 is not divided is adopted. It can also be done. In addition, various embodiments can be adopted without departing from the scope 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 portion 42 recessed portion 5 guide rod 51 shaft 52 roller 9, 10 caster 12 brake lever 13 cut-off bolt (brake mechanism)
14 Stopper bolt (brake mechanism)
15 Flange member (brake mechanism)

The manual rotary table apparatus according to the present invention includes a rotary table, an operating handle for rotating the rotating table, and a power transmission mechanism for transmitting an operating force of the operating handle to the rotary table. The power transmission mechanism has a rotary 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 rotational direction near the outer periphery . The guide rod enters the recess between the teeth of the rotary plate at a position facing the rotary plate, and when the rotary plate rotates in conjunction with the operation of the operation handle, the guide rod is pushed by the teeth of the rotary plate to rotate The table rotates. In the present invention, the rotary plate comprises a sprocket having a V-shaped recess, and the guide rod comprises a conveyor wheel having a shaft and a roller.

In the present invention, when the rotary handle (sprocket) is rotated by operating the operation handle, the guide rod (conveyor wheel) in the vicinity of the outer periphery of the rotary table is pushed by the teeth of the rotary plate and the rotary table rotates. Since the rotary table can be rotated with a small force and there is no need to provide a gear on the outer periphery of the rotary table, the configuration is simplified and an increase in cost can be suppressed. In addition, since gear engagement is not used for power transmission from the rotary plate to the rotary table, the rotation of the rotary table is not disturbed even if there is some variation in the distance between the guide rods. Furthermore, since a motor is not used for the drive source of 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 turntable may be provided with casters on its lower surface. In addition, the rotary table may be configured of a plurality of table units divided in the circumferential direction.

The above-described rotary table apparatus A 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. Further, in the example described above, the rotary table 1 is configured of the table unit 1a divided into eight, but the number of divisions is not limited to eight and can be arbitrarily selected, and a configuration in which the rotary table 1 is not divided is adopted. It can also be done. In addition, various embodiments can be adopted without departing from the scope of the present invention.

Claims (5)

With a rotating table,
An operating handle for rotating the rotary table;
And a power transmission mechanism for transmitting the operation force of the operation handle to the rotary table,
The power transmission mechanism has a rotary 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 rotational direction near the outer periphery,
The guide rod enters a recess between the teeth of the rotary plate at a position facing the rotary plate,
The rotary table rotates in conjunction with the operation of the operation handle, and the guide rod is pushed by the teeth of the rotary plate to rotate the rotary table. The rotating plate is a sprocket in which the recess is formed in a V-shape,
The hand-operated rotary table apparatus according to claim 1, wherein the guide rod is a conveyor wheel having an axis and a roller rotating around the axis. A brake lever for regulating the rotation of the rotary table;
The manual rotation table device according to claim 1 or 2, further comprising: a brake mechanism that operates in conjunction with the operation of the brake lever and limits power transmission by the power transmission mechanism.   The manual rotary table apparatus according to any one of claims 1 to 3, wherein the rotary table is provided with a caster on its lower surface.   The manual rotary table apparatus according to any one of claims 1 to 4, wherein the rotary table is configured of a plurality of table units divided in a circumferential direction.

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