JP2009121620A - Torque amplifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturizable torque amplifier capable of simplifying the amplifier. <P>SOLUTION: This torque amplifier has a rotatable rotary shaft 10 and a rotary member 20 arranged on the rotary shaft 10. The rotary member 20 is provided with a clearance 23 in a notched shape heading for the opposite side other end part by passing through a central part of rotation from one end part of the outer periphery up to the middle of the other end side. A fixing part 24 to be fixed to the rotary shaft 10 is arranged in one area of separating the rotary member 20 by a line passing through the one end part and the other end part, and an input part 25 for inputting torque is arranged in the other area. The torque inputted from the input part 25 is transmitted to the rotary shaft 10 via the fixing part 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a torque amplifying device capable of increasing torque.

Conventionally, torque amplifying devices having various mechanisms have been proposed. As a typical one, for example, one that adjusts the number of gear teeth to reduce the number of rotations and amplify the torque is known (see, for example, Patent Documents 1 and 2). According to such a torque amplifying apparatus, it is possible to arbitrarily adjust the torque amplification factor by arbitrarily adjusting the number of gear teeth.
JP-A-5-146115 Japanese Unexamined Patent Publication No. 60-30849

  However, in such a torque amplifying device, a plurality of gears having different rotation axes are used and the number of teeth is adjusted to amplify the torque, so that the device becomes large in order to obtain a large torque. There was a problem. In addition, since the rotational speed decreases instead of amplifying the torque, it is necessary to use a plurality of gears having different numbers of teeth in accordance with the target rotational speed, which complicates the apparatus. It was.

  The present invention has been made based on such a problem, and an object of the present invention is to provide a torque amplifying apparatus that can be simplified and miniaturized.

  The torque amplifying device of the present invention is provided with a rotatable rotating shaft, and is disposed with respect to the rotating shaft. It has a gap provided so as to be divided halfway, and is fixed to the rotating shaft in one region divided by a line passing through one end and the other end when viewed from the longitudinal direction of the rotating shaft. A fixed portion is provided, and a rotating member provided with an input portion to which torque is input is provided in the other region.

  According to the torque amplifying device of the present invention, the rotating member disposed on the rotating shaft is divided from the one end portion of the outer periphery to the other end portion on the opposite side through the center portion of the rotation to the middle on the other end side. In addition to providing a gap on the other side, a fixed part for fixing to the rotating shaft is provided in one area divided by a line passing through one end and the other end, and an input part for inputting torque is provided in the other area. The torque input from the input unit is transmitted to the rotating shaft through the fixed unit, and a larger torque can be output as compared with the case of directly transmitting the torque to the rotating shaft. Therefore, it is possible to increase the torque on the same shaft without reducing the rotational speed. Therefore, the apparatus can be simplified and downsized.

  In particular, if the center of the input unit is located in the central region from the rotation center to the middle line connecting the midpoint between the rotation center and the outer periphery, or the center of the input unit is one end and the rotation center. If the line passing through is located in the rotation direction region rotated within the range of 45 degrees or more and 135 degrees or less around the rotation center, or the center of the fixed part passes through one end and the rotation center Is positioned in the rotation direction region rotated within the range of 45 degrees or more and 135 degrees or less with the rotation center as the center, the torque can be further increased.

  Also, if the other end of the gap is provided in the central region from the center of rotation to the middle line connecting the center of the center of rotation and the outer periphery, the torque can be increased while ensuring sufficient strength. Can do.

  Furthermore, if the connecting member is provided without being fixed to the rotating shaft, connected to the input portion of the rotating member, and rotatable about the rotating shaft, the input portion is powered. Easy connection to the source.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of a torque amplifying device according to an embodiment of the present invention, FIG. 2 shows a configuration seen from the I direction of the torque amplifying device shown in FIG. 1, and FIG. 3 represents a cross-sectional structure taken along line II-II shown in FIG. The torque amplifying device includes a rotatable rotating shaft 10 and a rotating member 20 disposed on the rotating shaft 10. The rotary shaft 10 has, for example, a rod shape and is rotatably supported by a support member (not shown).

  The rotating member 20 has, for example, a disk-shaped main body 21, and a disposing hole 22 for disposing on the rotating shaft 10 is formed at the center of the main body 21. The main body 21 is also provided with a notch-like gap 23 so as to divide partway from the one end A of the outer periphery to the other end B on the opposite side through the center of rotation. Yes. Furthermore, when viewed from the longitudinal direction of the rotating shaft 10, that is, the I direction, one region 20 </ b> A of the main body 21 divided by a line C passing through the one end A and the other end B is fixed to the rotating shaft 10. A fixing portion 24 is provided, and an input portion 25 to which torque is input is provided in the other region 20B. In this torque amplifying device, the clearance 23 is provided in the rotating member 20 as described above, the rotating member 20A is fixed to the rotating shaft 10 in one region 20A, and the input unit 25 for inputting torque is provided in the other region 20B. Thus, the torque input from the input unit 25 is transmitted to the rotary shaft 10 via the fixed unit 24, and a larger torque can be output as compared with the case where the torque is directly transmitted to the rotary shaft 10. Yes.

  The other end side of the gap 23 is located in a central region 20C from the rotation center D to an intermediate line E connecting the midpoint between the rotation center D and the outer periphery when viewed from the longitudinal direction of the rotation shaft 10 in the rotating member 20. It is preferable to be provided. That is, it is preferable not to extend beyond the center line E toward the other end B. This is because if the gap 23 is too long, the strength decreases.

  For example, in one region 20A, the fixing portion 24 is screwed into a fixing hole 24A formed from the outer periphery of the main body 21 toward the arrangement hole 21 and a screw groove formed on the inner peripheral surface of the fixing hole 24A. And a screw 24B for fixing the rotating member 20 to the rotating shaft 10. The rotary shaft 10 is preferably formed with a notch 11 for fixing the screw 24B corresponding to the position where the rotary member 20 is disposed. This is because the rotating member 20 can be more reliably fixed.

  The center of the fixing portion 24 is a range of 45 degrees or more and 135 degrees or less with the line passing through the one end portion A and the rotation center D as the center of the rotation center D in the one region 20A as viewed from the longitudinal direction of the rotation shaft 10. It is preferably located in the rotation direction region 20D rotated within the range, and more preferably within a range rotated within the range of 85 degrees to 95 degrees. This is because the torque can be further increased. The center of the fixed portion 24 means the center of the fixed region fixed to the rotating shaft 10. In the present embodiment, it is the center of the tip portion of the screw 24B that is in contact with the rotating shaft 10.

  The input unit 25 is formed in a convex shape projecting from the main body 21 in the longitudinal direction of the rotary shaft 10 in a part of the other region 20B, and is connected to a power source (not shown). Although not shown, the input unit 25 may have a concave shape that is recessed in the longitudinal direction of the rotary shaft 10 or may be a through hole or a hole that does not penetrate. The center of the input unit 25 is located in the center region 20C from the rotation center D to the middle line E connecting the midpoints of the rotation center D and the outer periphery when viewed from the longitudinal direction of the rotation shaft 10 in the other region 20B. It is preferable. This is because the torque closer to the rotation center D can be increased.

  Further, the center of the input unit 25 is 45 degrees or more and 135 degrees or less with the line passing through the one end A and the rotation center D as the center of the rotation center D as viewed from the longitudinal direction of the rotation shaft 10 in the other region 20B. It is preferable to be positioned in the rotation direction region 20E rotated within the range, more preferably a range rotated within the range of 85 degrees to 95 degrees. This is because the torque can be further increased. The center of the input unit 25 means the center of the area occupied by the input unit 25 in the plane including the side surface of the main body 21 as viewed from the longitudinal direction of the rotary shaft 10.

  For example, as shown in FIG. 4, the torque amplifying device may include a connecting member 30 that connects the input unit 25 of the rotating member 20 to a power source (not shown). For example, the connecting member 30 is disposed without being fixed to the rotating shaft 10 by passing the rotating shaft 10 through a disposing hole 31 provided in the center, and can be rotated about the rotating shaft 10. It is said that. The connecting member 30 is formed with a fitting portion 32 corresponding to the input portion 25 of the rotating member 20 for fitting and connecting the input portion 25. The fitting part 32 is formed according to the shape of the input part 25. For example, when the input portion 25 is convex, it may be any of a hole shape, a hole shape, or a groove shape, and when the input portion 25 is concave shape, it is formed in a convex shape. It is preferable to provide such a connecting member 30 because torque can be easily input to the input unit 25 by connecting a power source (not shown) to the connecting member 30.

  In this torque amplifying device, a power source is connected to the input unit 25, and a device or a member that uses torque is connected to the rotary shaft 10 for use. For example, as shown in FIG. 1, when the torque indicated by the arrow T is input from the power source to the input unit 25, the input torque is transmitted to the rotary shaft 10 via the main body 21 and the fixing unit 24, Compared to the case where torque is directly transmitted to the rotary shaft 10, a large torque is output.

  As described above, according to the present embodiment, the rotating member 20 disposed on the rotating shaft 10 is moved from the one end A on the outer circumference to the other end B on the opposite side through the center of rotation. In addition, a gap 23 is provided so as to be divided halfway, and a fixing portion 24 fixed to the rotating shaft is provided in one region 20A divided by a line C passing through one end A and the other end B, and the other region 20B is provided in the other region 20B. Since the input unit 25 to which torque is input is provided, a large torque can be output by transmitting the torque input from the input unit 25 to the rotary shaft 10 via the fixed unit 24. Therefore, it is possible to increase the torque on the same shaft without reducing the rotational speed. Therefore, the apparatus can be simplified and downsized.

  In particular, if the center of the input unit 25 is positioned in the center region 20C from the rotation center D to the intermediate line E connecting the intermediate points between the rotation center D and the outer periphery, the torque can be further increased.

  Further, the center of the input unit 25 rotates within a range of 45 degrees or more and 135 degrees or less, and a range of 85 degrees or more and 95 degrees or less around the rotation center D, with a line passing through the one end A and the rotation center D as the center. If it is located within the range, the torque can be further increased.

  Further, the center of the fixed portion 24 rotates within a range of 45 degrees or more and 135 degrees or less, and a range of 85 degrees or more and 95 degrees or less about the rotation center D, with a line passing through the one end A and the rotation center D as the center. If it is located within the range, the torque can be further increased.

  In addition, if the other end side of the gap 23 is provided in the center region 20C from the rotation center D to the intermediate line E connecting the intermediate points between the rotation center D and the outer periphery, sufficient strength is secured. The torque can be increased.

  Further, the connecting member 30 is provided without being fixed to the rotating shaft 10 and connected to the input portion 25 of the rotating member 20 and rotatable about the rotating shaft 10. Thus, the input unit 25 can be easily connected to the power source.

(Examples 1-7)
The effect of the torque amplifying apparatus was examined using an experimental apparatus as shown in FIG. In this experimental apparatus, both ends of the rotating shaft 10 of the torque amplifying device are rotatably supported by a support member 41, a rotating plate 42 is fixedly disposed on one end of the rotating shaft 10, and the peripheral portion of the rotating plate 42 is arranged. One end of the spring 43 is attached to the other end, and the other end of the spring 43 is attached to the fixed plate 44. As described in the best mode for carrying out the invention, the torque amplifying device in which the rotating member 20 and the connecting member 30 are disposed on the rotating shaft 10 is used. A groove 33 is formed in the connecting member 30 from the outer periphery toward the center, and a rod 46 with a weight 45 attached is inserted so that torque in the direction indicated by the arrow T1 is input to the input portion 25 of the rotating member 20. I made it. As for the rotating member 20, the position of the fixed portion 24 and the position of the input portion 25 were changed in Examples 1 to 7 as shown in FIG. At that time, in each embodiment, the torque input to the connection member 30 is made the same, and the torque required to rotate the rotating disk 42 by the spring 43 is also made the same.

  In Examples 1 to 3, the position of the input unit 25 is fixed and the position of the fixing unit 24 is changed. In Examples 4 to 7, the position of the fixing unit 24 is fixed and the position of the input unit 25 is changed. Is. Specifically, in the first embodiment, the center position of the fixing portion 24 is changed from 45 degrees around the rotation center D from one end A toward one region 20A along a line passing through the one end A and the rotation center D. A range rotated within a range of 55 degrees, a range rotated within a range of 85 to 95 degrees in Example 2, and a range rotated within a range of 125 to 135 degrees in Example 3. It was. The center position of the input unit 25 in the first to third embodiments ranges from 85 degrees to 95 degrees with the line passing through the one end A and the rotation center D from the one end A to the other region 20B around the rotation center D. In the range rotated inside, it was set on an intermediate line E connecting intermediate points between the rotation center D and the outer periphery.

  In the fourth embodiment, the center position of the fixed portion 24 is the same as that of the second embodiment, and the center position of the input portion 25 is set to the rotation center D side than the second embodiment in the same rotational direction range as the second embodiment. In the fifth embodiment, the center position of the fixing portion 24 is set to be the same as that of the second embodiment, and the center position of the input portion 25 is set between the intermediate line E and the outer periphery in the same rotational direction range as that of the second embodiment. In the sixth embodiment, the position of the fixing portion 24 is the same as that of the second embodiment, and the center position of the input portion 25 is set on the intermediate line E from the one end A to the other on the line passing through the one end A and the rotation center D. The region 20B was rotated within a range of 45 to 55 degrees around the rotation center D. In the seventh embodiment, the position of the fixing portion 24 is the same as that of the second embodiment, and the center position of the input portion 25 is set so that a line passing through the one end A and the rotation center D on the intermediate line E extends from one end A to the other. The region 20B was rotated within a range from 125 degrees to 135 degrees around the rotation center D.

  Further, as a comparative example 1 for the present embodiment, the connecting member 30 is directly fixed to the rotating member 10 and a rod 46 having the same weight 45 as that of the embodiment is inserted into the groove 33 to check the rotating state of the rotating shaft 10. It was. Further, as Comparative Example 2, a rotating member 20 having the same configuration as that of Example 2 was used except that the gap 23 was formed only up to the center portion, and the rotation state of the rotary shaft 10 was similarly examined. As Comparative Example 3, the center position of the input unit 25 is set so that the line passing through the one end A and the rotation center D on the center line E from the one end A to the one region 20A as shown in FIG. Except that the rotation range is within the range of 85 to 95 degrees around the rotation center D, the rotation member 20 having the same configuration as that of the second embodiment is used except that the rotation shaft 10 is rotated in the same manner. I checked the condition. At that time, in each comparative example, the torque input to the connection member 30 and the torque required to rotate the rotating disk 42 by the spring 43 were made the same as those in each example. The obtained results are shown in Table 1.

  As shown in Table 1, in Comparative Examples 1 to 3, the rotating shaft 10 did not rotate, whereas in Examples 1 to 7, it rotated. That is, if the clearance 23 is provided from one end A to the other end side, the fixing portion 24 is provided in one region 20A, and the input portion 25 is provided in the other region 20B, a large torque is output. I found out that I could do it.

  Further, when Examples 1 to 3 were compared, Example 2 rotated faster than Examples 1 and 2. That is, the center position of the fixed portion 24 is within a range of 45 degrees to 135 degrees with the line passing through the one end A and the rotation center D as the center, and further within a range of 85 degrees to 95 degrees. It was found that the torque could be increased if the range was rotated.

  Furthermore, when Examples 2, 4, and 5 were compared, Example 2 rotated faster than Example 5, and Example 4 rotated faster than Example 2. That is, it has been found that the torque can be increased more when the position of the input unit 25 is closer to the rotation center D.

  In addition, when Examples 2, 6, and 7 were compared, Example 2 rotated faster than Examples 6 and 7. That is, the center position of the input unit 25 is within the range of 45 degrees to 135 degrees with the line passing through the one end A and the rotation center D as the center, and further within the range of 85 degrees to 95 degrees. It was found that the torque could be increased if the range was rotated.

  Although the present invention has been described with reference to the embodiment, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, the case where the gap 23 is formed by cutting the disk-shaped main body 21 is described. However, a gap is formed between two objects by combining two substantially semi-disk-shaped objects. You may make it do.

  Moreover, although the case where the rotating member 20 is fixed to the rotating shaft 10 with the screw 24B has been described in the above embodiment, the rotating member 20 may be fixed by other methods.

  It can be used in an apparatus using torque such as a motor or a vehicle.

1 is a perspective view illustrating a configuration of a torque amplifying device according to an embodiment of the present invention. FIG. 2 is a front view of the torque amplifying device shown in FIG. 1. It is sectional drawing along the II-II line | wire shown in FIG. It is sectional drawing showing the structure of the other torque amplification apparatus which concerns on one embodiment of this invention. It is a perspective view showing the structure of the experimental apparatus used in the Example. It is explanatory drawing showing the position of the fixing | fixed part and input part in the rotation member used in the Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Rotating shaft, 11 ... Notch, 20 ... Rotating member, 20A ... One area | region, 20B ... Other area | region, 20C ... Center area | region, 20D, 20E ... Rotation direction area | region, 21 ... Main body, 22 ... Arrangement | positioning hole, 23 ... Gap, 24 ... Fixed portion, 24A ... Fixed hole, 24B ... Screw, 25 ... Input portion, 30 ... Connection member, 31 ... Installation hole, 32 ... Fitting portion, 33 ... Groove, 41 ... Support member, 42 ... turntable, 43 ... spring, 44 ... fixed plate, 45 ... weight, 46 ... bar, A ... one end, B ... other end, C ... line, D ... center of rotation, E ... center line

Claims (8)

A rotatable axis of rotation;
It is provided with respect to this rotating shaft, has a gap provided so as to divide from the one end of the outer periphery to the other end on the opposite side through the center of rotation to the middle of the other end, and In one area divided by a line passing through the one end and the other end as viewed from the longitudinal direction of the rotating shaft, a fixing portion for fixing to the rotating shaft is provided, and in the other area, A torque amplifying apparatus comprising: a rotating member provided with an input unit for inputting torque. The center of the input unit is located in a central region from the rotation center to an intermediate line connecting intermediate points between the rotation center and the outer periphery in the other region as viewed from the longitudinal direction of the rotation shaft. The torque amplifying device according to claim 1. The center of the input part is within a range of 45 degrees or more and 135 degrees or less with the line passing through the one end part and the rotation center as the center, as viewed from the longitudinal direction of the rotation axis in the other area. The torque amplifying device according to claim 1, wherein the torque amplifying device is located in a rotated rotation direction region. The center of the fixed part is within a range of 45 degrees or more and 135 degrees or less with the line passing through the one end part and the rotation center as the center, as viewed from the longitudinal direction of the rotation axis, in the one region. The torque amplifying device according to any one of claims 1 to 3, wherein the torque amplifying device is located in a rotated rotation direction region. The other end portion side of the gap is provided in a central region of the rotating member from a rotation center to an intermediate line connecting intermediate points between the rotation center and the outer periphery. 4. The torque amplifying device according to any one of 4 above. The torque amplifying apparatus according to any one of claims 1 to 5, wherein the input unit is formed in a convex shape or a concave shape. The rotating member is disk-shaped,
The torque amplifying apparatus according to any one of claims 1 to 6, wherein the gap is a cut. A connection member that is disposed without being fixed to the rotation shaft, is connected to an input portion of the rotation member, and is rotatable about the rotation shaft. The torque amplification device according to any one of claims 1 to 7.

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