JP2006038110A - Gear transmission mechanism, and planetary gear mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear transmission mechanism, and a planetary gear mechanism, having a lower moment of inertia without requiring a combination of two gears for engagement. <P>SOLUTION: In this gear transmission mechanism including a plurality of gears 3 and 4, at least one of the gears 3 and 4 engaged with each other is formed of a magnet, and the other is formed of magnetic material. A circulating magnetic path 9 is formed at a part where the gears 3 and 4 are engaged with each other, and the gears 3 and 4 are engaged with each other at parts of mutually different poles. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gear transmission mechanism and a planetary gear mechanism that include a plurality of gears and transmit rotation from a drive side to a driven side.

  2. Description of the Related Art Conventionally, a gear transmission mechanism is known that includes a silencer for reducing noise (see, for example, Patent Document 1).

  As shown in FIG. 18, the gear transmission mechanism of Patent Document 1 described above decelerates the rotation of the drive shaft 125 of the motor and outputs it from the output shaft 126. The gear transmission mechanism is rotatably supported by the rotation shaft 120, Gears 122A and 122B meshed with the drive shaft 125 formed as described above, and gears 123A and 123B rotatably supported by the rotation shaft 121 and meshed with the gears 122A and 122B, respectively. Note that one end side of the rotation shaft 121 functions as the output shaft 126.

In such a gear transmission mechanism, the gears 122A and 122B hold the disc-shaped magnet 124, while the gears 123A and 123B hold the disc-shaped magnet 124 magnetized in the opposite direction, thereby 122A is an N pole, the gear 123A is an S pole, the gear 122B is an S pole, and the gear 123B is an N pole, so that a magnetic attraction force acts between the meshing gears. Such a magnetic attractive force has an effect of reducing backlash.
JP-A-8-285050

  However, since the conventional gear transmission mechanism uses two gears in pairs, it is difficult to obtain an appropriate meshing state at both meshing portions, and on the other hand, the backlash becomes too small to mesh. There was a risk that the condition would worsen, the transmission efficiency would decrease, and the tooth tip could be damaged.

  In addition to the two gears, the magnet also rotates together, which increases the moment of inertia of the rotating part as a whole, and there is a problem that its responsiveness decreases at the time of starting, stopping, and changing. .

  Therefore, an object of the present invention is to obtain a gear transmission mechanism and a planetary gear mechanism having a lower inertia moment without engaging a set of two.

  In the gear transmission mechanism according to the present invention, in the gear transmission mechanism including a plurality of gears, at least one of the two gears meshing with each other is a magnet, and the other is a magnet or a magnetic body. It is characterized in that the parts that are different magnetic poles of the gear are engaged with each other.

  According to such a configuration, since the gear itself is a magnet, there is no need to configure a pair of gears and sandwich the magnet with the two gears, and the meshing state is improved accordingly. At the same time, the moment of inertia can be reduced.

  In the gear transmission mechanism according to the present invention, two gears configured as magnets or magnetic bodies that mesh with each other or cooperate with each other via other gears, and that support the two gears, respectively. A gear transmission mechanism including one support shaft and a base portion that supports the two support shafts, and includes at least one magnet, thereby supporting one of the two support shafts and the support shaft. The other gear, the supporting shaft that supports the gear, and the base portion are formed with a magnetic path that circulates in that order or in the reverse order.

  According to such a configuration, since the circular magnetic path that passes through the gear, the support shaft, and the base portion is formed, a portion that meshes with a simpler configuration without using a configuration in which a magnet is held between two gears. A magnetic attractive force can be generated.

  In the gear transmission mechanism according to the present invention, it is preferable that one of the two support shafts is configured as a magnet magnetized in the axial direction. If it carries out like this, the magnetized part (magnet) as a generation source of a magnetic attraction force can be easily arrange | positioned as a support shaft.

  In the gear transmission mechanism according to the present invention, it is preferable that both of the two support shafts are configured as magnets magnetized in the axial direction. In this way, the magnetized portion (magnet) as the source of the magnetic attraction force can be easily arranged as the support shaft, and a larger magnetic attraction force can be obtained by magnetizing the two support shafts. Obtainable.

  In the gear transmission mechanism according to the present invention, one of the two support shafts is attached to a bearing made of a magnetic body provided on the base portion, and the bearing is configured as a magnet magnetized in the radial direction. Is preferred. If it carries out like this, the magnetized part (magnet) as a generation source of a magnetic attraction force can be arrange | positioned easily as a bearing.

  In the gear transmission mechanism according to the present invention, both of the two support shafts are respectively attached to two bearings made of a magnetic body provided on the base portion, and the two bearings are magnetized in the radial direction. It is preferable to configure as If it carries out like this, the magnetized part (magnet) as a generation source of a magnetic attraction force can be arrange | positioned easily as a bearing. In addition, a larger magnetic attractive force can be obtained by magnetizing the two bearings.

  Further, in the gear transmission mechanism according to the present invention, two gears configured as magnetic bodies that mesh with each other or cooperate via other gears, and two gears that respectively support the two gears. A gear transmission mechanism comprising: a support shaft; and a construction member constructed as a magnet that is constructed between the two support shafts and is magnetized from one support shaft toward the other support shaft. A magnetic path is formed that circulates one of the two support shafts, the gear supported by the support shaft, the other gear, and the support shaft that supports the gear in that order or vice versa. It is characterized by doing so.

  According to such a configuration, since the circular magnetic path passing through the gear, the support shaft, and the installation member is formed, it is necessary to configure the gear as a set of two and sandwich the magnet between the two gears. In a simpler configuration, a magnetic attractive force can be generated in the meshing portion.

  Further, in the planetary gear mechanism according to the present invention, in the planetary gear mechanism including the sun gear, the planetary gear, and the ring gear, the planetary gear is configured as a magnet magnetized in the axial direction, and the sun gear and the ring gear are configured as magnetic bodies. Accordingly, the portions of the sun gear and the planetary gear that are different magnetic poles mesh with each other, and the planetary gear and the ring gear that are different magnetic poles of each other mesh with each other.

  According to such a configuration, since the planetary gear made of a magnetic material is magnetized, it is not necessary to configure a pair of gears and sandwich the magnet with the two gears, and the meshing state is improved accordingly. In addition, the moment of inertia can be reduced.

  In the planetary gear mechanism according to the present invention, in the planetary gear mechanism including the sun gear, the planetary gear, and the ring gear, the sun gear and the ring gear are configured as magnets magnetized in the axial direction, and the planetary gear is configured as a magnetic body. Accordingly, the portions of the sun gear and the planetary gear that are different magnetic poles mesh with each other, and the planetary gear and the ring gear that are different magnetic poles of each other mesh with each other.

  According to such a configuration, since the sun gear and the ring gear are magnetized in the axial direction, it is not necessary to configure a pair of gears, and to sandwich the magnet with the two gears, and the meshing state is correspondingly reduced. In addition to being improved, the moment of inertia can be reduced.

  Further, in the planetary gear mechanism according to the present invention, in the planetary gear mechanism including the sun gear, the planetary gear, and the ring gear, the sun gear, the plurality of planetary gears, and the plurality of planetary gears, each configured as a magnet or a magnetic body, are supported. Including a planetary support shaft and a driven carrier that supports the plurality of planetary support shafts, and including at least one magnet, the planetary support shaft of the plurality of planetary support shafts is supported by the planetary support shaft. A planetary gear, a sun gear, another planetary gear, a planetary support shaft that supports the planetary gear, and a magnetic path that circulates the driven-side carrier in that order or in the reverse order are formed.

  According to such a configuration, since the circular magnetic path passing through the planetary support shaft, the planetary gear, the sun gear, and the driven carrier is formed, the magnets are sandwiched between these two gears as a set of two. In a simpler configuration, a magnetic attractive force can be generated in the meshing portion.

  In the gear transmission mechanism according to the present invention, it is preferable to configure at least one of the plurality of planetary support shafts as a magnet magnetized in the axial direction. If it carries out like this, the magnetized part (magnet) as a generation source of a magnetic attraction force can be easily arrange | positioned as a planetary support shaft.

  In the gear transmission mechanism according to the present invention, the driven carrier is configured as a magnet magnetized in a direction from a portion supporting one of a pair or a plurality of pairs of planetary support shafts to a portion supporting the other. Is preferred. If it carries out like this, the magnetized part (magnet) as a generation source of a magnetic attraction force can be easily arrange | positioned as a driven carrier.

  Further, in the planetary gear mechanism according to the present invention, in the planetary gear mechanism including the sun gear, the planetary gear, and the ring gear, the sun gear configured as a magnet or a magnetic body, the drive shaft that supports the sun gear, the planetary gear, and the planetary gear. A planetary support shaft for supporting the planetary support shaft, and a driven carrier for supporting the planetary support shaft, wherein the drive shaft is in contact with or close to the driven carrier, and includes at least one magnet to thereby provide the planetary support shaft. A magnetic path that circulates the planetary gear, the sun gear, the drive shaft, and the driven-side carrier in that order or in the reverse order is formed.

  According to such a configuration, the circular magnetic path passing through the planetary support shaft, the planetary gear, the sun gear, the drive shaft, and the driven carrier is formed, so that the two gears are made into a set, and the magnets are narrowed by these two gears. It is not necessary to have a holding structure, and a magnetic attractive force can be generated at the meshing portion with a simpler structure.

  Further, in the planetary gear mechanism according to the present invention, in the planetary gear mechanism including the sun gear, the planetary gear, and the ring gear, the drive shaft that supports the sun gear, the planetary gear, the ring gear, and the sun gear is configured as a magnetic body, while the above drive By constructing the erection member erected between the shaft and the ring gear as a magnet magnetized from one of the drive shaft and the ring gear toward the other, the erection member, the drive shaft, the sun gear, the planetary gear, and the ring gear, A magnetic path that circulates in that order or in the reverse order is formed.

  According to such a configuration, since the circular magnetic path passing through the installation member, the drive shaft, the sun gear, the planetary gear, and the ring gear is formed, the magnet is held between these two gears as a set of two. In a simpler configuration, a magnetic attractive force can be generated in the meshing portion.

  According to the present invention, a magnetic attraction force can be generated in the meshing portion while maintaining a more appropriate meshing state with a simpler configuration, so that backlash is appropriately reduced and noise is reduced. In addition, durability and reliability can be improved. In addition, since the moment of inertia of the rotating portion can be reduced, the effects of improved responsiveness, downsizing, and reduced manufacturing cost can be obtained.

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

  (First Embodiment) FIGS. 1A and 1B show a gear transmission mechanism according to a first embodiment of the present invention. FIG. 1A is a side view seen from the outside in the radial direction, and FIG. 1B is a view seen from the axial direction. (C) is an enlarged view of a portion where two gears mesh with each other (a region surrounded by a broken line in (b)).

  In the present embodiment, the gear 3 fixed to the rotatable support shaft 1 is configured as a magnet magnetized (magnetized) in the axial direction, and the upper side (root side) of FIG. The portion 5, the lower side (tip side) is an S pole portion 6. On the other hand, the gear 4 made of a magnetic material fixed to the rotatable support shaft 2 is also configured as a magnet magnetized in the axial direction. In this case, the upper side of FIG. The lower side is the N pole portion 7. In the example of FIG. 1, the gear 3 is on the main drive side (drive side), and the gear 4 is on the driven side (output side).

  With this configuration, the portion where the gear 3 and the gear 4 mesh with each other includes the N pole portion 5 of the gear 3, the S pole portion 8 of the gear 4, the N pole portion 7 of the gear 4, and the S pole portion 6 of the gear 3. A magnetic path 9 that circulates in this order is formed. Therefore, the surfaces where the gear 3 and the gear 4 mesh and come into contact with each other are different from each other, and a magnetic attractive force is generated between these surfaces.

  Here, when the magnetic attraction force does not act between the gears meshing with each other, the contact surface of the meshing teeth may change if the load torque varies greatly. That is, referring to FIG. 19, the state of contact at the front position 10 in the rotational direction shown in (a) and the state of contact at the front position 11 in the rotational direction shown in (b) are alternately switched. . In such a case, the teeth collide with each other when switching, and noise is generated.

  On the other hand, according to the present embodiment, the surfaces where the teeth come into contact with each other are attracted by the magnetic attractive force, so that the contact state can be switched and the generation of noise can be suppressed.

  According to the gear transmission mechanism according to the present embodiment having the above-described configuration, the portions that are different magnetic poles of the gears 3 and 4 are engaged with each other, so that the backlash is reduced and the noise is reduced. There is. Further, according to the present embodiment, since the gears 3 and 4 themselves are magnetized, the gear transmission mechanism can be simply configured as compared with the conventional one, contributing to reduction in size and weight, and suppressing the moment of inertia of the rotating portion. It has the effect of improving responsiveness such as starting, stopping, and switching.

  In this embodiment, an example in which only the two gears 3 and 4 are engaged has been described. However, the present invention can be similarly applied to a configuration in which three or more gears magnetized in the axial direction are engaged. However, in this case, for the two gears meshing with each other, their magnetization directions need to be opposite to each other (upward and downward from the same viewpoint as in FIG. 1A).

  (Second Embodiment) FIGS. 2A and 2B show a gear transmission mechanism according to a second embodiment of the present invention, in which FIG. 2A is a side view seen from the outside in the radial direction, and FIG. It is a plan view (view seen from below).

  In the present embodiment, the gear 3 made of a magnetic material fixed to the rotatable support shaft 1 is configured as a magnet magnetized in the axial direction, and the upper side (root side) of FIG. The portion 5 and the lower side (tip side) are the S pole portion 6. Similarly to the gear 3, the gear 15 made of a magnetic material fixed to the rotatable support shaft 14 is also configured as a magnet magnetized in the axial direction, with the N pole portion 18 on the upper side and the S pole portion on the lower side. 19. On the other hand, the gear 13 fixed to the rotatable support shaft 12 and the gear 17 fixed to the rotatable support shaft 16 are made of an unmagnetized magnetic material.

  With this configuration, a magnetic path 20 that circulates the N pole portion 5 of the gear 3, the gear 13, and the S pole portion 6 of the gear 3 in this order is formed at the portion where the gear 3 and the gear 13 are engaged with each other. That is, the portions where the gear 3 and the gear 13 mesh with each other have different polarities, and a magnetic attractive force is generated between them. Similarly, the magnetic paths 20 and 21 which circulate are formed between the gear 13 and the gear 15 and between the gear 15 and the gear 17 to generate a magnetic attractive force.

  According to the gear transmission mechanism according to the present embodiment having the above-described configuration, in addition to the above-described effects, there is an effect that the manufacturing cost can be reduced because it is not necessary to use all the gears as magnets.

  (Third Embodiment) FIGS. 3A and 3B show a gear transmission mechanism according to a third embodiment of the present invention. FIG. 3A is a side view seen from the outside in the radial direction, and FIG. FIG.

  In this embodiment, the gear 23 fixed to the rotatable support shaft 22 meshes with the gear 28 fixed to the rotatable support shaft 24, while the gear 29 fixed to the support shaft 24 and cooperates with the gear 28. Meshes with a gear 27 fixed to the rotatable support shaft 26.

  In the present embodiment, the gears 23, 28, 29, and 27 are all configured as magnets, and as shown in FIG. 3B, the gears 23, 28, 29, and 27 are provided for each tooth in the circumferential direction. It is divided and magnetized in the circumferential direction so that teeth adjacent to each other have different polarities (that is, N-pole teeth and S-pole teeth appear alternately along the circumferential direction). In addition, the two gears meshing with each other are assembled so that portions that are different magnetic poles mesh (contact). In the example of FIG. 3B, the tooth surface that is the S pole of the gear 23 is in contact with the tooth surface that is the N pole of the gear 28, and the tooth surface that is the S pole of the gear 29 and the N pole of the gear 27. The tooth surface to be in contact. Therefore, a magnetic attractive force acts between the tooth surfaces contacting each other.

  Effects similar to those described above can also be obtained by the gear transmission mechanism according to the present embodiment having the above-described configuration. Such a configuration is effective when a plurality of gears that cooperate with one support shaft are provided. In such a configuration, the number of teeth of the gears meshing with each other needs to be an even number.

  (Fourth Embodiment) FIGS. 4A and 4B show a gear transmission mechanism according to a fourth embodiment of the present invention. FIG. 4A is a side view seen from the outside in the radial direction, and FIG. FIG.

  In the present embodiment, a plurality of parallel support shafts 31, 33, and 35 are rotatably supported by the base portion 30, a gear 32 fixed to the support shaft 31, and a gear 37 fixed to the support shaft 33. Are engaged with each other, and a gear 34 fixed to the support shaft 33 and cooperating with the gear 37 is engaged with a gear 36 fixed to the support shaft 35. In the present embodiment, the base portion 30 and the support shafts 31, 33, and 35 are configured as magnetic bodies, while the gears 32, 37, 34, and 36 are all configured as magnets.

  As shown in FIG. 4B, the gears 32, 37, 34, and 36 are respectively magnetized in the radial direction. However, the gears that mesh with each other have different magnetization directions. That is, the gear 32 has an N pole portion 39 on the radially inner side and an S pole portion 40 on the radially outer side, whereas the gear 37 that meshes with the gear 32 has an S pole portion 42 on the radially inner side. The outside is the N pole portion 41. The gear 36 has an N pole portion 43 on the radially inner side and an S pole portion 44 on the radially outer side, whereas the gear 37 has an S pole portion on the radially inner side, although not shown. The outside is the N pole part.

  Accordingly, as shown in FIG. 4A, a magnetic path 45 is formed around the base portion 30, the support shaft 33, the gear 37, the gear 32, and the support shaft 31 in this order, and the base portion 30 and the support are supported. Magnetic paths 46 are formed around the shaft 33, the gear 34, the gear 36, and the support shaft 35 in this order, and are magnetically attracted between the gear 32 and the gear 37 that mesh with each other and between the gear 34 and the gear 36. Power is generated.

  According to the gear transmission mechanism according to the present embodiment having the above-described configuration, the magnetic attraction force acts on the gears meshing with each other by forming the circular magnetic paths 45 and 46 including the base portion 30, and the back There is an effect that the rush is reduced and the noise is reduced. Further, according to the present embodiment, since the gears 32, 37, 34, and 36 themselves are magnets, the gear transmission mechanism can be simply configured as compared with the conventional one, contributing to reduction in size and weight, and the rotation portion. The moment of inertia can be suppressed, and the responsiveness of starting, stopping, switching, etc. is improved.

  In this embodiment, the case where the four gears 32, 37, 34, and 36 cooperate is described as an example. However, when only two gears mesh with each other, or conversely, more gears cooperate. The same applies to such cases. However, with respect to the support shaft on which a plurality of magnetic paths are formed, it is preferable that the directions of the magnetic paths are the same within the support shaft. Also in this embodiment, the directions of the magnetic paths 45 and 46 passing through the support shaft 33 are the same. For this purpose, the magnetization directions of the plurality of gears supported by one support shaft and cooperating may be the same. Moreover, the structure which forms a magnetic path so that it may go around a support shaft and another site | part including a gearwheel like this embodiment is applicable irrespective of the odd number / even number of teeth.

  (Fifth Embodiment) FIGS. 5A and 5B show a gear transmission mechanism according to a fifth embodiment of the present invention. FIG. 5A is a side view as seen from the outside in the radial direction, and FIG. It is a plan view (view seen from below).

  In the present embodiment, a plurality of parallel support shafts 48 and 50 are rotatably supported by the base body portion 47, and a gear 49 fixed to the support shaft 48 and a gear 51 fixed to the support shaft 50 mesh with each other. ing. And in this embodiment, while the support shaft 48 is comprised as a magnet, the base | substrate part 47, the support shaft 50, and the gears 49 and 51 are comprised with the magnetic body.

  As shown in FIG. 5 (a), the support shaft 48 is magnetized in the axial direction so that the lower side thereof is the north pole. Therefore, the support shaft 48, the gear 49, the gear 51, and the support shaft 50 are provided. And a magnetic path 52 that circulates around the base portion 47 is formed, and a magnetic attractive force is generated between the gear 49 and the gear 51 that mesh with each other.

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effects, the configuration is simplified and the manufacturing cost can be reduced because the rod-shaped support shaft 48 is a magnet. effective.

  (Sixth Embodiment) FIGS. 6A and 6B show a gear transmission mechanism according to a sixth embodiment of the present invention. FIG. 6A is a side view seen from the outside in the radial direction, and FIG. FIG.

  In the present embodiment, a plurality of parallel support shafts 48 and 53 are rotatably supported by the base portion 47, and a gear 49 fixed to the support shaft 48 and a gear 51 fixed to the support shaft 53 mesh with each other. ing. And in this embodiment, while the support shafts 48 and 53 are comprised as a magnet, the base | substrate part 47 and the gearwheels 49 and 51 are comprised as a magnetic body.

  As shown in FIG. 6A, in this embodiment, in addition to the support shaft 48 being magnetized so that the lower side is an N pole, the support shaft 53 is N side on the upper side. The magnet 49 is magnetized in the axial direction so as to be a pole, and therefore, the support shaft 48, the gear 49, the gear 51, the support shaft 53, and the magnetic path 55 that goes around the base portion 47 are formed, and the gear 49 and the gear meshing with each other. A magnetic attraction force is generated between the first and second members 51.

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effect, there is an effect that a larger magnetic attractive force can be obtained by magnetizing the two support shafts 48 and 53. is there.

  (Seventh Embodiment) FIG. 7 shows a gear transmission mechanism according to a seventh embodiment of the present invention, in which (a) is a plan view seen from one side (base portion side) in the axial direction. ) Is a side view as seen from the outside in the radial direction, and (c) is a plan view as seen from the other side (gear side) in the axial direction.

  In the present embodiment, a plurality of parallel support shafts 57, 59 are rotatably supported by the base portion 56, and the gear 58 fixed to the support shaft 57 and the gear 60 fixed to the support shaft 59 mesh with each other. ing. Here, the support shaft 57 is rotatable by being attached to an inner movable portion of a bearing 61 (for example, a radial bearing) provided in the base portion 56. And in this embodiment, while the bearing 61 is comprised as a magnet, the base | substrate part 56, the support shafts 57 and 59, and the gearwheels 58 and 60 are comprised as a magnetic body.

  And as shown to (a) of FIG. 7, in this embodiment, the bearing 61 is magnetized to radial direction. That is, the radially inner portion of the bearing 61 is an N pole portion 62 and the radially outer portion is an S pole portion 63. Therefore, a magnetic path 64 is formed around the bearing 61, the support shaft 57, the gear 58, the gear 60, the support shaft 59, and the base portion 56 in this order, and magnetic attraction is performed between the gear 58 and the gear 60 that mesh with each other. Power is generated.

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effects, the configuration is simplified as much as the bearing 61 is magnetized, and the manufacturing cost can be reduced.

  (Eighth Embodiment) FIG. 8 shows a gear transmission mechanism according to an eighth embodiment of the present invention. FIG. 8A is a plan view seen from one side (base portion side) in the axial direction. ) Is a side view as seen from the outside in the radial direction, and (c) is a plan view as seen from the other side (gear side) in the axial direction.

  In the present embodiment, a plurality of parallel support shafts 57, 59 are rotatably supported by the base portion 56, and the gear 58 fixed to the support shaft 57 and the gear 60 fixed to the support shaft 59 mesh with each other. ing. Here, in this embodiment, in addition to the support shaft 57, the support shaft 59 is also pivotable by being attached to an inner movable portion of a bearing 65 (for example, a radial bearing) provided in the base portion 56. Yes. And while the bearings 61 and 65 are comprised as a magnet, the base | substrate part 56, the support shafts 57 and 59, and the gearwheels 58 and 60 are comprised as a magnetic body.

  As shown in FIG. 8A, the bearing 65 is magnetized in the radial direction. However, the magnetization direction is opposite to that of the bearing 61. That is, the radially inner portion of the bearing 65 is an S pole portion 67 and the radially outer portion is an N pole portion 66. Accordingly, a magnetic path 68 is formed around the bearing 61, the support shaft 57, the gear 58, the gear 60, the support shaft 59, the bearing 65, and the base portion 56, and magnetically between the gear 58 and the gear 60 that mesh with each other. A suction force is generated.

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effects, there is an effect that a larger magnetic attractive force can be obtained by magnetizing the two bearings 61 and 65. .

  (Ninth Embodiment) FIGS. 9A and 9B show a gear transmission mechanism according to a ninth embodiment of the present invention. FIG. 9A is a side view seen from the radially outer side, and FIG. 9B is a view seen from the axial direction. FIG.

  In the present embodiment, a plurality of parallel support shafts 69, 70 are rotatably supported by the base portion 47, and the gear 49 fixed to the support shaft 69 and the gear 51 fixed to the support shaft 70 mesh with each other. ing. And in this embodiment, the installation member 71 comprised as a magnet is constructed between the two support shafts 69 and 70 which each support the gears 49 and 51 which mesh | engage mutually, and the both ends are the support shafts 69. , 70 so as to be in non-contact with a small gap. However, both ends of the erection member 71 and the peripheral walls of the support shafts 69 and 70 may slide while being in contact with each other. In the present embodiment, the support shafts 69 and 70 and the gears 49 and 51 are all made of a magnetic material. In this case, the base portion 47 may be a magnetic material or a non-magnetic material.

  As shown in FIG. 9A, the erection member 71 is magnetized from one support shaft 70 toward the other support shaft 69. That is, the support shaft 69 side is an N pole portion, and the support shaft 70 side is an S pole portion. Therefore, the construction member 71, the support shaft 69, the gear 49, the gear 51, and the magnetic path 72 that goes around the support shaft 70 are formed, and a magnetic attractive force is generated between the gear 49 and the gear 51 that mesh with each other.

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effects, the erection member 71 provided separately from the basic components of the gear transmission mechanism is magnetized. In addition to the gear transmission mechanism that was not able to generate a magnetic attractive force at the beginning, the construction member 71 is added to the gear transmission mechanism that cannot initially generate a magnetic attractive force, thereby generating a magnetic attractive force between the gears meshing with each other. There is an effect that can be.

  (Tenth Embodiment) FIG. 10 shows a gear transmission mechanism according to a tenth embodiment of the present invention, wherein (a) is a side view seen from the outside in the radial direction, and (b) is seen from the axial direction. FIG.

  In this embodiment, a plurality of parallel support shafts 73 and 74 are rotatably supported by the base portion 47, and a gear 49 fixed to the support shaft 73 and a gear 51 fixed to the support shaft 74 are provided. I'm engaged. And in this embodiment, the installation member 75 comprised as a magnet is constructed between the two support shafts 73 and 74 which respectively support the gears 49 and 51 which mesh | engage mutually, The edge part is a support shaft. The peripheral walls 73 and 74 are not in contact with each other with a minute gap. However, in this embodiment, the erection member 75 is provided on the side farther from the gears 49 and 51 when viewed from the base portion 47. That is, the support shafts 73 and 74 are extended longer than the positions where the gears 49 and 51 are fixed, and the erection member 75 is provided between the extended portions. In this embodiment, the support shafts 73 and 74, the gears 49 and 51, and the installation member 75 are all made of a magnetic material. The base portion 47 may be a magnetic material or a non-magnetic material.

  As shown in FIG. 10A, in this embodiment as well, as in the ninth embodiment, the erection member 75 is magnetized from one support shaft 74 toward the other support shaft 73. . That is, the support shaft 73 side is an N pole portion, and the support shaft 74 side is an S pole portion. Accordingly, a magnetic path 76 that circulates the erection member 75, the support shaft 73, the gear 49, the gear 51, and the support shaft 74 in this order is formed, and a magnetic attractive force is generated between the gear 49 and the gear 51 that mesh with each other. .

  According to the gear transmission mechanism according to the present embodiment having the above configuration, in addition to the above-described effects, there is a merit that it is easier to install the erection member 75.

  (Eleventh Embodiment) FIG. 11 shows a planetary gear mechanism according to an eleventh embodiment of the present invention. It is the side view seen from.

  The planetary gear mechanism according to this embodiment includes a sun gear 81, planetary gears 83 and 85, and a ring gear 86. The sun gear 81 rotates together with the drive shaft 80 to which rotation is input, and a plurality (two in this example) of planetary gears 83 and 85 meshing with the sun gear 81 (outer peripheral teeth) are connected to the ring gear 86 (inner peripheral teeth). Rotating around the sun gear 81 while meshing. The planetary gears 83, 85 are respectively supported by a planetary support shaft 82 supported by the driven carrier 87, and the rotation operation of the planetary gears 83, 85 around the sun gear 81 is an output shaft provided at the subsequent stage of the driven carrier 87. 88 is output.

  In this embodiment, the planetary gears 83 and 85 are configured as magnets magnetized in the axial direction. In this embodiment, as shown in FIG. 11B, an N pole portion 91 is provided on the input side (left side in FIG. 11B) of the planetary gears 83 and 85, and the output side (right side in FIG. 11). An S pole portion 92 is provided at the end. On the other hand, the sun gear 81 and the ring gear 86 are configured as magnetic bodies.

  With this configuration, the N-pole portion 91 of the planetary gears 83, 85, the ring gear 86, and the S-pole portion 92 of the planetary gears 83, 85 are arranged in this order at the portions where the planetary gears 83, 85 and the ring gear 86 mesh with each other. A path 105 is formed. Therefore, a magnetic attractive force is generated between the surfaces where the planetary gears 83 and 85 and the ring gear 86 are engaged with each other. Similarly, in the portion where the sun gear 81 and the planetary gears 83 and 85 are engaged, the N-pole portion 91 of the planetary gears 83 and 85, the sun gear 81, and the S-pole portion 92 of the planetary gears 83 and 85 circulate in this order. 106 is formed. Therefore, a magnetic attractive force is also generated between the surfaces in which the planetary gears 83 and 85 and the ring gear 86 are engaged with each other.

  According to the planetary gear mechanism according to the present embodiment having the above-described configuration, since the tooth surfaces engaged with each other and brought into contact with each other are magnetically attracted, noise can be suppressed. In addition, according to the present embodiment, since the planetary gears 83 and 85 themselves are magnetized, the configuration can be simplified as compared with the case where a separate magnet is attached to the rotating part, which contributes to the reduction in size and weight, and the rotation part. Since the moment of inertia can be suppressed, there is an effect that responsiveness such as start, stop, and conversion is improved.

  (Twelfth Embodiment) FIGS. 12A and 12B show a planetary gear mechanism according to a twelfth embodiment of the present invention, in which FIG. 12A is a front view seen from the axial direction input side, and FIG. It is the side view seen from.

  In the planetary gear mechanism according to the eleventh embodiment, the planetary gears 83 and 85 are magnets. However, in this embodiment, the sun gear 81A and the ring gear 86A are replaced with magnets magnetized in the axial direction. That is, as shown in FIG. 12B, regarding the sun gear 81A, the input side (left side in FIG. 12B) is the N pole portion 95, and the output side (right side in FIG. 12) is the S pole portion 96. In addition, the ring gear 86A also has an N pole portion 93 on the input side and an S pole portion 94 on the output side.

  With this configuration, a magnetic path 107 that circulates the N-pole portion 93 of the ring gear 86A, the planetary gears 83A and 85A, and the S-pole portion 94 of the ring gear 86A in this order is formed at the portion where the planetary gears 83A and 85A mesh with the ring gear 86A. Is done. Therefore, a magnetic attraction force is generated between the surfaces where the planetary gears 83A and 85A and the ring gear 86A are engaged with each other. Similarly, at the portion where the sun gear 81A and the planetary gears 83A, 85A mesh with each other, a magnetic path 108 that goes around the N pole portion 95 of the sun gear 81A, the planetary gears 83A, 85A, and the S pole portion 96 of the sun gear 81A in this order. It is formed. Therefore, a magnetic attractive force is also generated between the surfaces where the sun gear 81A and the planetary gears 83A and 85A are engaged with each other.

  The effect similar to the above-mentioned effect is acquired also by the planetary gear mechanism concerning this embodiment provided with the above structure.

  13th Embodiment FIG. 13 shows a planetary gear mechanism according to a 13th embodiment of the present invention. FIG. 13A is a front view seen from the axial input side, and FIG. 13B is a radially outer side. It is the side view seen from.

  In the planetary gear mechanism according to the present embodiment, the planetary support shafts 82B and 84B are magnets magnetized in the axial direction instead of using gears as magnets. That is, as shown in FIG. 13B, with respect to the planetary support shaft 82B, the input side (left side of FIG. 13B) is the N pole portion 97, and the output side (right side in FIG. 13) is the S pole portion. On the other hand, regarding another planetary support shaft 84B, the input side is the S pole portion 100 and the output side is the N pole portion 99. In the present embodiment, the sun gear 81, the planetary gears 83A and 85A, the ring gear 86, and the driven carrier 87 are configured as magnetic bodies.

  With this configuration, in the portion where the sun gear 81 and the planetary gears 83A, 85A mesh, the magnetic path 109 that circulates the planetary support shaft 82B, the planetary gear 83A, the sun gear 81, the planetary gear 85A, the planetary support shaft 84B, and the driven carrier 87 in this order. Is formed. Therefore, a magnetic attractive force is generated between the surfaces where the sun gear 81 and the planetary gears 83A and 85A mesh with each other and come into contact with each other.

  The effect similar to the above-mentioned effect is acquired also by the planetary gear mechanism concerning this embodiment provided with the above structure. In addition, since the planetary support shafts 82B and 84B are used as magnets instead of gears, the configuration is simplified, and the manufacturing cost can be reduced.

  14th Embodiment FIG. 14 shows a planetary gear mechanism according to a 14th embodiment of the present invention. FIG. 14A is a front view seen from the axial input side, and FIG. 14B is a radially outer side. It is the side view seen from.

  In the planetary gear mechanism according to the present embodiment, the driven carrier 87C is configured as a magnet that is divided into two portions by 180 °. That is, as shown in FIGS. 14A and 14B, the portion of the driven carrier 87C that supports the planetary support shaft 82 is the N-pole portion 101, and another planetary support shaft 84 is supported. The S pole portion 102 is the portion that is present. In the present embodiment, the sun gear 81, the planetary gears 83A and 85A, and the planetary support shafts 82 and 84 are configured as magnetic bodies.

  With this configuration, in the portion where the sun gear 81 and the planetary gears 83A and 85A mesh with each other, the planetary support shaft 82, the planetary gear 83A, the sun gear 81, the planetary gear 85A, the planetary support shaft 84, and the driven carrier 87C circulate in this order. Is formed. Therefore, a magnetic attractive force is generated between the surfaces where the sun gear 81 and the planetary gears 83A and 85A mesh with each other and come into contact with each other.

  The effect similar to the above-mentioned effect is acquired also by the planetary gear mechanism concerning this embodiment provided with the above structure. Further, since the driven carrier 87C, not the gear, is used as a magnet, the magnet can be manufactured more easily, and a larger magnetic force can be obtained because the volume of the magnet can be increased.

  (Fifteenth embodiment) FIG. 15 shows a planetary gear mechanism according to a fifteenth embodiment of the present invention, in which (a) is a front view seen from the axial direction input side, and (b) is a radially outer side. It is the side view seen from.

  In the planetary gear mechanism according to the present embodiment, the planetary support shafts 82B and 84D are magnets magnetized in the axial direction. That is, as shown in FIG. 15B, the input side (left side in FIG. 15B) of the planetary support shaft 82 is an N pole portion 97, and the output side (right side in FIG. 15) is an S pole portion. . Further, the drive shaft 80 is extended from the attachment position of the sun gear 81 to the output side so as to come into contact with the driven carrier 87 or approach with a small gap. In the present embodiment, the sun gear 81, the planetary gears 83A and 85A, and the driven carrier 87 are configured as magnetic bodies.

  With this configuration, magnetic paths 110a and 110b are formed for the planetary gears 83A and 85A at the portion where the sun gear 81 and the planetary gears 83A and 85A mesh with each other. That is, the magnetic path 110a orbits the upper planetary support shaft 82B, the planetary gear 83A, the sun gear 81, the drive shaft 80, and the driven carrier 87 in this order in FIG. 15B, while the magnetic path 110b In the figure, the lower planetary support shaft 84D, the planetary gear 85A, the sun gear 81, the drive shaft 80, and the driven carrier 87 are circulated in this order. Therefore, a magnetic attractive force is generated between the surfaces where the sun gear 81 and the planetary gears 83A and 85A mesh with each other and come into contact with each other.

  The effect similar to the above-mentioned effect is acquired also by the planetary gear mechanism concerning this embodiment provided with the above structure.

  (Sixteenth Embodiment) FIG. 16 shows a planetary gear mechanism according to a sixteenth embodiment of the present invention. (A) is a front view seen from the axial direction input side, and (b) is a radially outer side. It is the side view seen from.

  In the planetary gear mechanism according to the present embodiment, an erection member 89 is provided between the drive shaft 80 and the ring gear 86. That is, as shown in FIG. 16B, the erection member 89 extends from the input side end face of the ring gear 86 toward the axial input side (left side in the figure), and is bent and driven at a right angle toward the radial inner side. It extends to the side surface of the shaft 80. However, the erection member 89 is in contact with the ring gear 86, but is not in contact with the drive shaft 80 with a small gap, or is slid while in contact. Further, in the present embodiment, the erection member 89 is a magnet magnetized so that the drive shaft 80 side is N-pole and the ring gear 86 side is S-pole, while the sun gear 81, the planetary gears 83A and 85A, the ring gear 86, and the drive shaft 80 is a magnetic body.

  With this configuration, magnetic paths 111a and 111b are formed for each of the planetary gears 83A and 85A in a portion where the sun gear 81 and the planetary gears 83A and 85A mesh, and a portion where the planetary gears 83A and 85A mesh with the ring gear 86, respectively. That is, the magnetic path 111a circulates the upper erection member 89, the drive shaft 80, the sun gear 81, the planetary gear 83A, and the ring gear 86 in this order in FIG. 16B, while the magnetic path 111b is lower in FIG. The side installation member 89, the drive shaft 80, the sun gear 81, the planetary gear 85A, and the ring gear 86 are circulated in this order. Therefore, a magnetic attractive force is generated on the surface where the sun gear 81 and the planetary gears 83A and 85A mesh with each other and the surface where the planetary gears 83A and 85A mesh with the ring gear 86 and contact with each other.

  The effect similar to the above-mentioned effect is acquired also by the planetary gear mechanism concerning this embodiment provided with the above structure. Moreover, in order to acquire the said effect, there exists an advantage that the installation member 89 as a magnet can be retrofitted.

  (Seventeenth Embodiment) FIG. 17 shows a planetary gear mechanism according to a seventeenth embodiment of the present invention, and is a side view of the planetary gear mechanism as viewed from the radially outer side.

  In the planetary gear mechanism according to the present embodiment, the driven carrier 87F is configured as a magnet magnetized in the axial direction. That is, as shown in FIG. 17, the output side of the driven carrier 87 </ b> F is an N pole portion 104 and the input side is an S pole portion 103. A plurality of magnetic paths 112a, 112b, 113a, 113b are formed through a casing (outer housing) 90. That is, as shown in the figure, a casing 90 surrounding the basic components of the planetary gear mechanism, rotatably holding the drive shaft 80 and the output shaft 88 and inscribed with the ring gear 86 is provided. It is made of a magnetic material. The drive shaft 80, the sun gear 81, the planetary gears 83A and 85A, the ring gear 86, and the output shaft 88 are made of a magnetic material.

  With this configuration, a plurality of magnetic paths 112a, 112b, 113a, and 113b are formed in a portion where the sun gear 81 and the planetary gears 83A and 85A mesh with each other, and a portion where the planetary gears 83A and 85A mesh with the ring gear 86. That is, the magnetic path 112a circulates the N pole portion 104 of the driven carrier 87F, the output shaft 88, the casing 90, the ring gear 86, the planetary gear 83A, and the planetary support shaft 82 in this order, and the magnetic path 112b includes the driven carrier 87F. N pole portion 104, output shaft 88, casing 90, ring gear 86, planetary gear 85A, and planetary support shaft 84 circulate in this order. The magnetic path 113a circulates the N pole portion 104 of the driven carrier 87F, the output shaft 88, the casing 90, the drive shaft 80, the sun gear 81, the planetary gear 83A, and the planetary support shaft 82 in this order, and the magnetic path 113b The N pole portion 104, the output shaft 88, the casing 90, the drive shaft 80, the sun gear 81, the planetary gear 85A, and the planetary support shaft 84 of the driven carrier 87F are circulated in this order. Therefore, a magnetic attractive force is generated on the surface where the sun gear 81 and the planetary gears 83A and 85A mesh with each other and the surface where the planetary gears 83A and 85A mesh with the ring gear 86 and contact with each other.

  Even with the planetary gear mechanism according to the present embodiment having the above-described configuration, the same effect as the above-described effect can be obtained, and a low-noise planet using a casing regardless of the number of gears, the number of teeth, and the module configuration. A gear mechanism can be realized.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made to the above embodiments without departing from the scope of the invention. For example, the present invention can be implemented with the number of gears, the size, the number of teeth, etc. changed, and the size, magnetization direction, installation position, etc. of the magnet can be modified as appropriate.

  In all the embodiments described above, the magnetic saturation limit increases when the meshing ratio of the gears meshing with each other is 2 or more. Further, by using a magnet having a stronger magnetic force, noise reduction and other effects can be obtained for a gear transmission mechanism and a planetary gear mechanism with a large torque.

The schematic block diagram of the gear transmission mechanism concerning 1st Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 2nd Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 3rd Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 4th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 5th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 6th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 7th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 8th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 9th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 10th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 11th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 12th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 13th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 14th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 15th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 16th Embodiment of this invention. The schematic block diagram of the gear transmission mechanism concerning 17th Embodiment of this invention. The schematic block diagram of the conventional gear transmission mechanism. The figure which shows an example of the change of the contact tooth surface accompanying load torque fluctuation | variation.

Explanation of symbols

3, 4, 13, 15, 17, 23, 27, 28, 29, 32, 34, 36, 37, 49, 51, 58, 60 Gears 9, 20, 21, 45, 46, 52, 55, 64, 68, 72, 76, 105, 106, 107, 108, 109, 110a, 110b, 111a, 111b, 112a, 112b, 113a, 113b Magnetic path 30, 47, 56 Base part 31, 33, 35, 48, 50, 53, 57, 59, 69, 70, 73, 74 Support shaft 61, 65 Bearing 71, 75, 89 Mounting member 80 Drive shaft 81, 81A Sun gear 82, 82B, 84, 84B, 84D Planetary support shaft 83, 83A, 85 , 85A Planetary gear 86, 86A Ring gear 87, 87C, 87F Driven carrier 88 Output shaft

Claims (14)

In a gear transmission mechanism including a plurality of gears,
A gear transmission characterized in that at least one of two gears meshing with each other is a magnet and the other is a magnet or a magnetic body so that different magnetic pole portions of the two gears mesh with each other. mechanism. Two gears configured as magnets or magnetic bodies that mesh with each other or cooperate via other gears, two support shafts that respectively support the two gears, and a base that supports the two support shafts A gear transmission mechanism including a portion,
By including at least one magnet, one support shaft of the two support shafts, a gear supported by the support shaft, the other gear, a support shaft supporting the gear, and a base portion in that order or A gear transmission mechanism characterized in that a magnetic path that circulates in the reverse order is formed.   The gear transmission mechanism according to claim 2, wherein one of the two support shafts is configured as a magnet magnetized in the axial direction.   The gear transmission mechanism according to claim 2, wherein both of the two support shafts are configured as magnets magnetized in the axial direction.   One of the two support shafts is attached to a bearing made of a magnetic body provided on the base portion, and the bearing is configured as a magnet magnetized in the radial direction. The gear transmission mechanism as described in any one.   3. Both of the two support shafts are respectively attached to two bearings made of a magnetic body provided on a base portion, and the two bearings are configured as magnets magnetized in a radial direction. 4. The gear transmission mechanism according to claim 1. Two gears configured as magnetic bodies, which mesh with each other or cooperate via other gears, and two support shafts respectively supporting the two gears;
A construction member constructed as a magnet constructed between the two support shafts and magnetized from one support shaft toward the other support shaft;
A gear transmission mechanism including
A magnetic path that circulates the erection member, one of the two support shafts, a gear supported by the support shaft, the other gear, and a support shaft that supports the gear in that order or vice versa. A gear transmission mechanism characterized by being formed. In planetary gear mechanisms including sun gears, planetary gears, and ring gears,
While the planetary gear is configured as a magnet magnetized in the axial direction, the sun gear and the ring gear are configured as magnetic bodies so that the different magnetic parts of the sun gear and the planetary gear are engaged with each other and the planetary gear and the ring gear are different magnetic poles. A planetary gear mechanism characterized by engaging each other. In planetary gear mechanisms including sun gears, planetary gears, and ring gears,
The sun gear and the ring gear are configured as magnets magnetized in the axial direction, while the planetary gear is configured as a magnetic body so that the different magnetic pole portions of the sun gear and the planetary gear mesh with each other, and the planetary gear and the ring gear have different magnetic pole portions. A planetary gear mechanism characterized by engaging each other. In planetary gear mechanisms including sun gears, planetary gears, and ring gears,
A sun gear, a plurality of planetary gears, a plurality of planetary support shafts that respectively support the planetary gears, and a driven carrier that supports the plurality of planetary support shafts, each configured as a magnet or a magnetic body;
By including at least one magnet, one planetary support shaft among the plurality of planetary support shafts, a planetary gear supported by the planetary support shaft, a sun gear, another planetary gear, a planetary support shaft that supports the planetary gear, and a driven A planetary gear mechanism characterized in that a magnetic path is formed to circulate the side carriers in the order or in the reverse order.   The planetary gear mechanism according to claim 10, wherein at least one of the plurality of planetary support shafts is configured as a magnet magnetized in the axial direction.   11. The planet according to claim 10, wherein the driven carrier is configured as a magnet magnetized in a direction from a portion supporting one of a pair or a plurality of pairs of planetary support shafts to a portion supporting the other. Gear mechanism. In planetary gear mechanisms including sun gears, planetary gears, and ring gears,
A sun gear, a drive shaft that supports the sun gear, a planetary gear, a planetary support shaft that supports the planetary gear, and a driven carrier that supports the planetary support shaft configured as a magnet or a magnetic body;
The drive shaft is in contact with or close to the driven carrier;
By including at least one magnet, a planetary path that circulates the planetary support shaft, the planetary gear, the sun gear, the drive shaft, and the driven carrier in the order or in the reverse order is formed. Gear mechanism. In planetary gear mechanisms including sun gears, planetary gears, and ring gears,
The sun gear, the planetary gear, the ring gear, and the drive shaft that supports the sun gear are configured as magnetic bodies, and the installation member that is installed between the drive shaft and the ring gear is magnetized from one of the drive shaft and the ring gear toward the other. By configuring as a magnet
A planetary gear mechanism characterized in that a magnetic path is formed to circulate the installation member, drive shaft, sun gear, planetary gear, and ring gear in that order or in the reverse order.

Images