JP4917167B1 - Motor gear housing and motor - Google Patents

Abstract

To provide a gear housing of a motor capable of reducing material and weight while increasing rigidity of a mounting foot.
A gear housing of a motor is fixed to a motor main body that rotationally drives a rotating shaft, and accommodates a worm and a worm wheel that are connected to the rotating shaft, and three mounting feet for fixing to a mounting member. Are formed so as to protrude from one side surface with an interval. One side surface of the gear housing 11 is provided with a bulging portion 11e bulging outward so as to widen the internal space, and the bulging portion 11e constitutes the side wall portion 11f of the bulging portion 11e. It has a connecting wall portion erected from one side surface and a bulging end wall portion 11i that constitutes the upper wall portion of the bulging portion 11e and connects the leading end side of the linking wall portion in the erection direction. The three attachment feet 11d are connected by a connecting wall portion (side wall portion 11f) and a bulging end wall portion 11i.
[Selection] Figure 2

Description

  The present invention relates to a motor gear housing and a motor.

  2. Description of the Related Art Conventionally, a motor used as a drive source for a vehicle wiper device or the like includes a motor body that rotationally drives a rotating shaft, and a speed reducer that decelerates and outputs the rotation of the rotating shaft. The reduction unit includes a gear housing fixed to the motor body, a reduction gear (worm and worm wheel) housed in the gear housing, an output shaft that protrudes outward from the gear housing and rotates integrally with the reduction gear (worm wheel). Is provided. In addition, on one side surface of the gear housing, a support cylinder portion that protrudes in a cylindrical shape to support the output shaft is formed, and three attachment feet for fixing to an attachment member (vehicle body or the like) are provided around the support cylinder portion. There is one in which the portions are formed so as to protrude with an interval (see, for example, Patent Document 1). These mounting feet are connected to each other on one side of the gear housing by arc-shaped reinforcing ribs (in an annular shape), and are connected to reinforcing ribs that extend radially from the support cylinder portion, so that the rigidity is increased. Has been enhanced.

JP 2005-137092 A

  However, in the gear housing as described above, although the mounting feet are connected by the reinforcing rib, the reinforcing rib has a structure in which the tip end side easily falls down only by standing upright from one side of the gear housing. In order to ensure the rigidity of the rib, for example, it is necessary to increase the thickness of the rib, which increases the material and weight.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a gear housing of a motor and a motor capable of reducing material and weight while increasing the rigidity of a mounting foot. There is to do.

  According to the first aspect of the present invention, the plurality of mounting feet are fixed to the motor main body that rotationally drives the rotating shaft, accommodates the reduction gear connected to the rotating shaft, and is fixed to the mounting member. A gear housing of the motor formed to protrude from one side surface, wherein the one side surface is provided with a bulging portion formed to bulge to the outside so as to widen the internal space, and the bulging portion is A connecting wall portion erected from the one side surface constituting the side wall portion of the bulging portion, and a bulging portion constituting the upper wall portion of the bulging portion and connecting the leading end side in the standing direction of the linking wall portion The gist is that the plurality of attachment feet are connected by the connecting wall and the bulging end wall.

  According to this configuration, the one side surface is provided with a bulging portion bulging outwardly so as to widen the internal space. And the connecting wall part standingly arranged from the said one side surface which comprises the side wall part of a bulging part, and the bulging end wall which comprises the upper wall part of a bulging part and connects the standing direction front side of a connecting wall part Since the plurality of attachment feet are connected to each other, the material and the weight can be reduced while mutually increasing the rigidity of the attachment feet. That is, the connecting wall portion (side wall portion) is connected to the bulging end wall portion of the bulging portion formed in a bulging shape at the leading end side in the erected direction so that the rigidity is increased (it is difficult to fall down). Compared with the configuration in which a plurality of reinforcing ribs are provided, the shape of the gear housing is simplified, the thickness of the bulging portion can be reduced, and the material and weight of the gear housing can be reduced.

  According to a second aspect of the present invention, in the gear housing of the motor according to the first aspect, three of the mounting foot portions are formed, and the connecting wall portion is 3 as viewed from the protruding direction of the mounting foot portion. The gist is to connect the attachment feet so that a triangle having the two attachment feet as apexes is formed.

  According to the same configuration, the connecting wall portion has a mounting foot so that a triangle having three mounting feet as vertices is formed as viewed from the protruding direction of the mounting foot (the bulging end wall portion is a triangle). In order to connect the parts, the three attachment legs are linearly connected at the shortest distance. Therefore, for example, material and weight can be reduced while increasing the rigidity of the mounting foot as compared with the case where the mounting foot is connected to form a ring shape with the connecting wall (side wall).

  According to a third aspect of the present invention, in the gear housing of the motor according to the first or second aspect, the cylindrical support tube portion for supporting the output shaft that rotates integrally with the gear wheel that constitutes the reduction gear, The gist is that it is provided in connection with the bulging portion.

  According to this configuration, since the cylindrical support tube portion for supporting the output shaft that rotates integrally with the gear wheel that forms the reduction gear is provided in connection with the bulge portion, the bulge portion supports the support tube. It becomes possible to mutually increase the rigidity of the parts.

  According to a fourth aspect of the present invention, in the gear housing of the motor according to the third aspect, the support tube portion includes an outer tube portion protruding outward from the bulging end wall portion, and the bulging end wall portion. The gist of the invention is to have an inner cylinder portion that protrudes inward and communicates with the outer cylinder portion.

  According to the same configuration, the support cylinder portion includes an outer cylinder portion protruding outward from the bulging end wall portion of the bulging portion, and an inner cylinder portion protruding inward from the bulging end wall portion and communicating with the outer cylinder portion. Therefore, the rigidity is higher than that of the support cylinder that supports the output shaft that is the same length as the output shaft that is supported by the outer cylinder and the inner cylinder by projecting only from the bulging end wall to the outside. And the output shaft can be firmly supported. That is, it is necessary for the support cylinder portion to secure rigidity capable of receiving the force in the direction perpendicular to the axis (reaction force from the load side) applied to the output shaft, and in particular, a large force is applied to the base end and the distal end of the support cylinder portion. Will be applied. And, in order to ensure rigidity in the support cylinder part that is protruded greatly from the bulging end wall part and supported, for example, it is necessary to enlarge the ribs that reinforce the support cylinder part. In the configuration having the outer tube portion and the inner tube portion, both the outer tube portion and the inner tube portion need not protrude from the bulging end wall portion, so the rigidity of the support tube portion can be increased without increasing the size of the rib. It can be secured. Therefore, for example, even when a rib that reinforces the support tube portion is provided, the output shaft can be firmly supported by downsizing the rib (for example, reducing the number or reducing the thickness), and thus The material and weight of the gear housing can be reduced.

  According to a fifth aspect of the present invention, in the gear housing of the motor according to the third or fourth aspect, the plurality of mounting feet and the support tube are connected by the connecting wall. .

According to this configuration, since the plurality of mounting feet and the support tube are connected by the connecting wall, the material and weight can be reduced while increasing the rigidity of the support tube together with the mounting feet. .
According to a sixth aspect of the present invention, in the gear housing of the motor according to the fourth aspect, the connecting wall portion of the bulging portion and the inner cylindrical portion are connected by a plurality of internal ribs. To do.

  According to this configuration, since the connecting wall portion of the bulging portion and the inner cylindrical portion are connected by the plurality of internal ribs (in the internal space expanded by the bulging portion), the inner cylindrical portion and the connecting wall portion Increases rigidity. In addition, when ribs are provided outside the housing to reinforce the support cylinder portion, for example, water may be accumulated in a portion surrounded by the ribs, but this is avoided with the internal ribs.

  In the seventh aspect of the present invention, in the gear housing of the motor according to the sixth aspect, the inner rib includes a vertex rib extending from the inner cylindrical portion toward a position corresponding to the mounting foot portion. And

According to this configuration, since the internal rib includes the apex rib extending from the inner tube portion toward the position corresponding to the mounting foot, the rigidity of the mounting foot can be further increased.
According to an eighth aspect of the present invention, in the gear housing of the motor according to the sixth or seventh aspect, the inner rib is an opposite rib extending from the inner cylinder portion toward a center position between the mounting feet. Inclusion is included.

  According to this configuration, since the internal rib includes the opposite rib extending from the inner tube portion toward the center position between the mounting feet, the rigidity of the connecting wall portion in the bulging portion can be improved in a balanced manner. it can.

The invention according to claim 9 is summarized in a motor including the gear housing of the motor according to any one of claims 1 to 8, the reduction gear, and the motor body.
According to this configuration, the effect of the invention according to any one of claims 1 to 8 can be obtained in the motor.

  ADVANTAGE OF THE INVENTION According to this invention, the gear housing and motor of a motor which can reduce material and a weight can be provided, raising the rigidity of a mounting leg part.

1 is a side view of a motor in the present embodiment. (A) The perspective view of the one side surface of the gear housing in this Embodiment. (B) One side view of a gear housing. (A) The perspective view of the other side surface side of the gear housing in this Embodiment. (B) The other side view of a gear housing similarly. (A) Sectional drawing corresponding to the AA line in FIG.2 (b). (B) Sectional drawing corresponding to the BB line in FIG.2 (b). The schematic one side view for demonstrating the gear housing in another example. The schematic one side view for demonstrating the gear housing in another example.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a motor 1 is a wiper motor used as a drive source of a vehicle wiper device that wipes raindrops and the like attached to a windshield of a vehicle, and includes a motor body 2 and a speed reduction unit 3. .

  The motor body 2 includes a substantially bottomed cylindrical yoke 4, a magnet 5 fixed to the inner periphery of the yoke 4, and an armature 6 housed in the yoke 4, and rotationally drives the armature 6. As for the rotating shaft 7 of the armature 6, the front end side protrudes from the yoke 4, and the worm 8 is formed in the front end side.

  The speed reduction unit 3 includes a gear housing 11, a housing cover (not shown) that closes an opening 11 a (see FIG. 3) of the gear housing 11, and a worm as a gear wheel that is accommodated in the gear housing 11 and meshed with the worm 8. A wheel 12 and an output shaft 13 provided to rotate integrally with the worm wheel 12 are provided. In the present embodiment, the worm 8 and the worm wheel 12 constitute a reduction gear.

  Specifically, the gear housing 11 is formed by die casting an aluminum alloy. As shown in FIGS. 1 to 3, the gear housing 11 extends along the rotation shaft 7 of the motor main body 2 and accommodates the worm 8 and communicates with the worm housing 11 b to accommodate the worm 8. A wheel housing portion 11c for housing the worm wheel 12 to be engaged.

  Further, on one side surface of the gear housing 11 (the surface on the side shown in FIG. 2B, the surface on which the output shaft 13 protrudes to the outside, that is, the surface opposite to the wheel housing portion 11c). Are formed with three mounting feet 11d for fixing to a mounting member (vehicle body or the like) (not shown) of the vehicle protruding from each other with a gap therebetween. Each attachment foot 11d is formed in a substantially cylindrical shape. In addition, the mounting foot portion 11d of the present embodiment has a substantially equilateral triangular shape with the position corresponding to the position where the worm 8 and the worm wheel 12 are engaged as one vertex, with the position corresponding to the output shaft 13 as the center. It is provided at a position to be the apex.

  Further, as shown in FIGS. 2A and 2B, a bulging portion 11e bulging outward is provided on one side surface of the gear housing 11 so as to widen the internal space. A side wall portion (wall portion standing from the one side surface and extending along the bulging direction) 11f of the bulging portion 11e is viewed from the protruding direction of the mounting foot portion 11d (see FIG. 2 (b)). The attachment feet 11d are connected in a ring shape, and are arranged so as to form a triangle having the three attachment feet 11d as vertices, thereby constituting a connection wall portion connecting the attachment feet 11d. In the present embodiment, as shown in FIG. 2, a positioning bulging portion 11g bulging outward from the triangle is formed on a part of the side wall portion 11f. A concave portion 11h for positioning is formed in 11g. In addition, a cylindrical support cylinder portion 11j described later is formed at the center position of an inscribed circle of a substantially equilateral triangle with the three attachment feet 11d as vertices so that the axes thereof coincide with each other.

  Further, the upper wall portion of the bulging portion 11e has a wall surface intersecting the axis of the output shaft 13, and the bulging end wall portion connecting the front end side in the standing direction of the side wall portion 11f (connection wall portion). In 11i, a cylindrical support cylinder portion 11j for communicating the inside and outside of the gear housing 11 and supporting the output shaft 13 is formed at the center of the wheel housing portion 11c.

  Here, as shown in FIGS. 2 (a), 3 (a), and 4 (b), the support cylinder portion 11j of the present embodiment is an outer cylinder that protrudes outward from the bulging end wall portion 11i. A portion 11k and an inner cylinder portion 11l projecting inward from the bulging end wall portion 11i and communicating with the outer cylinder portion 11k.

  As shown in FIGS. 4 (a) and 4 (b), bearings 14a and 14b for supporting the output shaft 13 are provided apart (in the axial direction) at both ends of the support cylinder portion 11j ( The output shaft 13 of the worm wheel 12 constituting the reduction gear is cantilevered. The bearings 14a and 14b are oil-impregnated bearings made of sintered metal.

  Further, the side wall portion 11f and the inner cylindrical portion 11l of the bulging portion 11e are formed of a plurality of internal ribs 11m as shown in FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b). , 11n. The inner ribs 11m and 11n of the present embodiment are inner ribs 11m as apex ribs extending from the inner cylindrical part 11l toward positions (each apex of the triangle) corresponding to the mounting feet 11d (see FIG. 2). And an internal rib 11n as an opposite rib extending from the inner cylinder portion 11l toward a center position (each center of each side of the triangle) between the mounting feet 11d. The internal ribs 11m and 11n are formed upright from the bulging end wall portion 11i so as to connect the side wall portion 11f and the inner cylinder portion 11l.

Next, characteristic effects of the above embodiment will be described below.
(1) On one side surface of the gear housing 11, a bulging portion 11e bulging outward is provided so as to widen the internal space. And the connection wall part standingly arranged from the said 1 side which comprises the side wall part 11f of the bulging part 11e, and the standing wall direction tip of the connection wall part (side wall part 11f) which comprises the upper wall part of the bulging part 11e Since the plurality of attachment feet 11d are connected at the bulging end wall 11i connecting the sides, the material and weight can be reduced while increasing the rigidity of the attachment feet 11d. That is, the connecting wall portion (side wall portion 11f) is connected to the bulging end wall portion 11i of the bulging portion 11e bulging and formed at the leading end side in the erected direction. Compared with the configuration in which the reinforcing rib is provided, the shape of the gear housing 11 is simplified, the thickness of the bulging portion 11e can be reduced, and the material and weight of the gear housing 11 can be reduced.

  (2) The connection wall portion (side wall portion 11f) is formed with a triangle having three attachment foot portions 11d as apexes when viewed from the protruding direction of the attachment foot portion 11d (the bulging end wall portion 11i is a triangle). ), The three attachment feet 11d are linearly connected at the shortest distance. Therefore, for example, compared to the case where the attachment foot portion 11d is connected to form an annular shape by the connection wall portion (side wall portion 11f), the material and weight can be reduced while increasing the rigidity of the attachment foot portion 11d. it can.

  (3) Since the cylindrical support cylinder portion 11j for supporting the output shaft 13 that rotates integrally with the worm wheel 12 constituting the reduction gear is connected to the bulge portion 11e, the bulge portion 11e It is possible to increase the rigidity of the support cylinder portion 11j.

  Specifically, in the present embodiment, the support cylinder part 11j communicates with the outer cylinder part 11k protruding outward from the bulging end wall part 11i and the outer cylinder part 11k protruding outside from the bulging end wall part 11i. And an inner cylinder portion 11l. That is, the bulging end wall portion 11i of the bulging portion 11e is connected at an intermediate position in the protruding direction of the support cylinder portion 11j. Therefore, the output shaft having the same length as that of the output shaft 13 supported by the outer tube portion 11k and the inner tube portion 11l is more rigid than the support tube portion supported by projecting only from the bulging end wall portion 11i to the outside. The output shaft 13 can be firmly supported. That is, it is necessary for the support cylinder portion 11j to secure rigidity capable of receiving the force in the direction perpendicular to the axis (reaction force from the load side) applied to the output shaft 13, and particularly the base end and the tip end of the support cylinder portion 11j. A great deal of power will be applied. In order to secure rigidity, for example, the support cylinder part 11j that reinforces the support cylinder part needs to be enlarged in order to ensure rigidity in the support cylinder part that is protruded greatly from the bulging end wall part 11i and supported. However, in the configuration having the outer cylinder part 11k and the inner cylinder part 11l, the outer cylinder part 11k and the inner cylinder part 11l both require a small amount of protrusion from the bulging end wall part 11i. Even if it is not, the rigidity of the support cylinder part 11j is securable. Therefore, for example, even when the internal ribs 11m and 11n that reinforce the support cylinder portion 11j (inner cylinder portion 11l) are provided as in the present embodiment, the ribs are reduced in size (for example, the number is reduced or the thickness is reduced). The output shaft 13 can be firmly supported, and the material and weight of the gear housing 11 can be reduced.

  (4) Since the side wall part 11f (connection wall part) of the bulging part 11e and the inner cylinder part 11l are connected by a plurality of internal ribs 11m and 11n (in the internal space expanded by the bulging part 11e), The rigidity of the inner cylinder part 11l and the side wall part 11f is enhanced mutually. Further, when a rib is provided outside the housing to reinforce the support cylinder portion 11j, for example, water may be collected in a portion surrounded by the rib. However, in the internal ribs 11m and 11n, Avoided.

  (5) Since the internal ribs 11m and 11n include the internal rib (vertex rib) 11m extending from the inner tube portion 11l toward the position corresponding to the mounting foot portion 11d, the rigidity of the mounting foot portion 11d can be further increased. .

  (6) Since the internal ribs 11m and 11n include the internal ribs (opposite side ribs) 11n extending from the inner cylinder part 11l toward the center position between the mounting legs 11d, the rigidity of the side wall part 11f in the bulging part 11e. Can be improved in a well-balanced manner.

The above embodiment may be modified as follows.
In the above-described embodiment, the connection wall portion (side wall portion 11f) is formed with a triangle having the three attachment foot portions 11d as vertices when viewed from the protruding direction of the attachment foot portion 11d (the bulging end wall portion 11i). The mounting feet 11d are connected so that the mounting feet 11d are connected to each other as long as the mounting feet 11d are connected. For example, the attachment foot portion 11d may be a connecting wall portion that connects in an annular shape, that is, a bulging portion that is bulged and formed in a cylindrical shape (concentric with the support tube portion 11j) toward the outside.

  Further, for example, it may be changed as schematically shown in FIG. That is, the attachment foot portion 21 of this example (see FIG. 5) is such that the triangle having the apex thereof is detached from the support tube portion 22 that supports the output shaft 13 (not overlapping when viewed from the protruding direction of the attachment foot portion 21). Is formed. And the bulging part 23 is connected so that the side wall part 23a (connection wall part) may connect the some attachment leg part 21 and the support cylinder part 22 (in this example, seeing from the protrusion direction, the bulging end wall part 23b) Is formed in a substantially diamond shape). If it does in this way, material and a weight can be reduced, raising the rigidity of the support cylinder part 22 with the attachment leg part 21. FIG.

  Further, for example, it may be changed as shown in FIG. That is, the mounting foot portion 24 of this example (see FIG. 6) is formed so that the triangular side having the apex thereof overlaps the support tube portion 25. The bulging portion 26 has a side wall portion 26a (connecting wall portion) formed in a triangle having the three attachment feet 24 as apexes (the bulging end wall portion 26b is substantially triangular) and The attachment leg 24 and the support cylinder 25 are formed so as to be connected. In this example, the support cylinder part 25 is formed so as to have an inner cylinder part (not shown) in the internal space expanded by the bulging part 26. Even in this case, the material and weight can be reduced while increasing the rigidity of the support tube portion 25 together with the mounting foot portion 24.

In the above-described embodiment, three attachment feet 11d are formed. However, as long as there are a plurality of attachment feet 11d, the number may be changed to other numbers (for example, two or four).
In the above embodiment, the support cylinder portion 11j for supporting the output shaft 13 includes the outer cylinder portion 11k that protrudes to the outside from the bulging end wall portion 11i, and the inner portion that protrudes to the inside from the bulging end wall portion 11i. However, the present invention is not limited to this, and it may be a supporting cylinder part that simply protrudes outward from the gear housing 11 (the bulging end wall part 11i) (without the inner cylinder part 11l). .

  In the above embodiment, the side wall portion 11f and the inner cylinder portion 11l of the bulging portion 11e are connected by the plurality of internal ribs 11m and 11n. However, the present invention is not limited to this, and the internal ribs 11m and 11n It is good also as a structure which is not connected. Moreover, you may provide the external rib for reinforcing the outer cylinder part 11k in the outer side of the bulging part 11e (bulging end wall part 11i).

  In the above-described embodiment, the internal ribs 11m and 11n include the internal ribs (vertex ribs) 11m extending from the inner cylindrical part 11l toward the positions corresponding to the mounting feet 11d (the respective apexes of the triangle), and the inner cylinder The internal ribs (opposite side ribs) 11n extending from the portion 11l toward the center position between the mounting feet 11d (each center of each side of the triangle) are provided. However, the configuration thereof may be changed. . For example, it is good also as a structure which is not provided with the internal rib (vertex rib) 11m extended toward the position (each vertex of the said triangle) corresponding to each attachment leg part 11d, and the center position ( It is good also as a structure which is not provided with the internal rib (opposite side rib) 11n extended toward each center of the said triangle, and you may provide an internal rib in the position different from the said internal ribs 11m and 11n.

  In the above embodiment, the bearings 14a and 14b that support the output shaft 13 are provided separately on both ends of the support cylinder portion 11j. However, the present invention is not limited to this, and the axial direction of the support cylinder portion 11j A bearing may be provided throughout.

  In the above embodiment, the motor 1 is used as a drive source for the vehicle wiper device, but is not limited to this. For example, the motor 1 may be used as a drive source for a power window device. It may be a motor.

  DESCRIPTION OF SYMBOLS 2 ... Motor main body, 7 ... Rotary shaft, 8 ... Worm which comprises a part of reduction gear, 11 ... Gear housing, 11d, 21, 24 ... Mounting leg part, 11e, 23, 26 ... Swelling part, 11f, 23a , 26a ... sidewall portion (connection wall portion), 11i, 23b, 26b ... bulging end wall portion, 11j, 22, 25 ... support cylinder portion, 11k ... outer cylinder portion, 11l ... inner cylinder portion, 11m, 11n ... inside Ribs, 12... Worm wheel (gear wheel) constituting a part of the reduction gear, 13.

Claims (9)

A plurality of mounting feet for fixing the fixing shaft to the mounting member, which are fixed to the motor main body that rotates the rotating shaft and accommodates the reduction gear connected to the rotating shaft, are formed to protrude from one side surface with intervals. A motor gear housing,
The one side surface is provided with a bulging portion formed to bulge to the outside so as to widen the internal space,
The bulging portion includes a connecting wall portion erected from the one side surface constituting the side wall portion of the bulging portion, and an upper wall portion of the bulging portion, and the distal end side in the erected direction of the connecting wall portion And a bulging end wall portion for connecting,
A gear housing for a motor, wherein the plurality of mounting feet are connected by the connecting wall and the bulging end wall. The gear housing of the motor according to claim 1,
Three mounting feet are formed,
The connecting wall portion connects the mounting foot portions so as to form a triangle having the three mounting foot portions as apexes when viewed from the projecting direction of the mounting foot portion. . In the gear housing of the motor according to claim 1 or 2,
A gear housing for a motor, wherein a cylindrical support tube portion for supporting an output shaft that rotates integrally with a gear wheel that constitutes the reduction gear is provided in connection with the bulge portion. The gear housing of the motor according to claim 3,
The support tube portion includes an outer tube portion protruding outward from the bulging end wall portion, and an inner tube portion protruding inward from the bulging end wall portion and communicating with the outer tube portion. The gear housing of the motor. In the gear housing of the motor according to claim 3 or 4,
The gear housing of a motor, wherein the plurality of mounting feet and the support tube are connected by the connecting wall. The gear housing of the motor according to claim 4,
The gear housing of a motor, wherein the connecting wall portion and the inner cylinder portion of the bulging portion are connected by a plurality of internal ribs. The gear housing of the motor according to claim 6,
The motor gear housing, wherein the inner rib includes a vertex rib extending from the inner tube portion toward a position corresponding to the mounting foot portion. The gear housing of the motor according to claim 6 or 7,
The motor gear housing according to claim 1, wherein the inner rib includes an opposite rib extending from the inner tube portion toward a center position between the mounting feet.   A motor comprising the gear housing of the motor according to any one of claims 1 to 8, the reduction gear, and the motor main body.

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