JP2009159668A - Supporting structure of motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting structure of a motor that highly precisely positions an axis center position without need of high dimensional accuracy in a fixing member and reduces breakage of the fixing member. <P>SOLUTION: In the motor 3, a first abutting part 11b being a part of a periphery abuts on supporting stand seats 2f and 2g of a case 2 and it is supported. Two parts in the periphery are depressed at an elastic abutting part 31a of a fixed plate 31 fixed to the case 2. The axis center position is decided by depression force and is supported in a radial direction so that it cannot move. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a motor support structure.

Conventionally, a substantially cylindrical motor is supported (fixed) by a support member such as a case. As such a motor support structure, for example, there is a structure in which a fixing member (bracket) fixed to the motor is fastened and fixed (screwed) to the support member (see, for example, Patent Document 1).
JP 2005-151646 A

  However, in the motor support structure as described above, since the motor is fixed directly (rigidly) to the support member by the fixing member, the shaft center position of the motor (the position of the rotating shaft protruding outside) is used as the support member. On the other hand, in order to position with high accuracy, high dimensional accuracy is required for the fixing member or the like. In the motor support structure as described above, since the motor is fixed directly (rigidly) to the support member by the fixing member, stress due to motor vibration or the like is concentrated on a part of the fixing member (for example, a bent portion). As a result, the fixing member may be broken.

  The present invention has been made in order to solve the above-described problems, and its purpose is to fix the position of the shaft center with high accuracy without requiring high dimensional accuracy for the fixing member or the like, and to fix it. An object of the present invention is to provide a motor support structure capable of reducing breakage of members.

  The invention according to claim 1 is a motor support structure for supporting a substantially columnar motor with respect to the support member, and a first contact portion which is a part of the outer periphery of the motor is applied to the support member. At the same time, at least two locations on the outer periphery of the motor are pressed by elastic contact portions of a fixing member fixed to the support member, and the axial center position of the motor is determined by the pressing force. Thus, the motor was supported so as not to move in the radial direction.

  According to this configuration, the motor is supported by the first contact portion, which is a part of the outer periphery, being in contact with the support member, and the elastic contact portion of the fixed member fixed to the support member. When at least two places on the outer periphery are pressed and the axial center position is determined by those pressing forces so that they can be moved in the radial direction so that they can be supported directly (rigidly) on the support member. The axial center position can be positioned with high accuracy without requiring high dimensional accuracy for the fixing member or the like as in the conventional case. In addition, it is possible to prevent stress due to motor vibration or the like from being concentrated on a part of the fixing member (for example, a bent portion) as in the case where the fixing member directly supports (rigidly) the supporting member (conventional). As a result, it can reduce that a fixing member breaks.

  According to a second aspect of the present invention, in the motor support structure according to the first aspect, the elastic contact portions are spaced apart from the first contact portion by 90 ° or more, and the first contact portion. Two locations on the outer periphery of the motor are pressed at symmetrical positions with respect to a plane including the shaft center of the motor.

  According to this configuration, the motor is separated from the first abutment portion by 90 ° or more on the outer periphery, and two positions at symmetrical positions with respect to a plane including the first abutment portion and its own axis center are provided. Since it is pressed by the elastic contact portion, the center position of the shaft is determined in a well-balanced manner with a simple configuration and is supported so as not to move in the radial direction. In other words, if it is configured other than pressing at two symmetrical positions as described above, the shape of the fixing member becomes complicated, such as the need for each elastic contact portion to have a different shape, and it is supported in a balanced manner. However, this can be easily avoided.

  According to a third aspect of the present invention, in the motor support structure according to the second aspect, the fixing member includes two elastic contact portions that press two places on the outer periphery of the motor, and a connecting portion that connects them. One plate-like fixing plate having fixing portions fixed to the support member on the outside of the two elastic contact portions.

  According to this configuration, since the fixing member is a single plate-shaped fixing plate, it can be realized with a simple configuration and a small number of parts. In addition, since the fixing member is fixed to the support member outside the elastic contact portion connected by the connecting portion, for example, two independent fixing members (no connecting portion) for each elastic contact portion and Compared with the case where it does, the pressing force which presses the outer periphery of a motor can be made high easily.

  According to a fourth aspect of the present invention, in the motor support structure according to any one of the first to third aspects, the fixing member is disposed between the fixing portion and the elastic contact portion. It has the upright part extended along the substantially perpendicular direction with respect to the contact surface of 1 contact part.

  According to this configuration, the fixing member has the upright portion extending in a substantially vertical direction with respect to the contact surface of the first contact portion between the fixing portion and the elastic contact portion. Compared with a motor that does not have a portion, it is possible to easily increase the resistance to resistance against the force in the direction of lifting from the support member of the motor (first contact portion).

  According to a fifth aspect of the present invention, in the motor support structure according to the fourth aspect, the fixing member includes the fixing portion, the upright portion, and the elastic contact portion formed on the same straight line. It was arranged at the same position in the axial direction of the motor.

  According to this configuration, the fixing member has the fixing portion, the upright portion, and the elastic contact portion formed on the same straight line and disposed at the same position in the axial direction of the motor. Compared to those not formed or arranged at the same position, it is possible to easily increase the strength against resistance in the direction of lifting from the support member of the motor (first contact portion).

  According to a sixth aspect of the present invention, in the motor support structure according to any one of the first to fifth aspects, the support member has an axial direction in which movement of the motor in one axial direction can be restricted. A restricting portion was formed, and a spring support portion was formed for supporting a spring member that presses the other axial end surface of the motor toward the one axial side.

  According to this configuration, the motor is pressed against one side in the axial direction by the spring member whose other end surface in the axial direction is supported by the spring support portion of the support member, and the movement toward the one side in the axial direction is the axis of the support member. Since it is restricted by the direction restriction part, it cannot be moved in the axial direction with a simple configuration.

  According to a seventh aspect of the present invention, in the motor support structure according to the sixth aspect, the elastic contact portion is disposed so as to press one axial side of the motor, and the spring member is the motor. A radial pressing portion that presses the other axial end in the direction in which the first contact portion in the radial direction comes into contact.

  According to this configuration, the motor is pressed in the direction in which the first abutting portion in the radial direction abuts on the other end in the axial direction that is not pressed by the elastic abutting portion by the radial pressing portion of the spring member. Further, it is possible to prevent lifting from the support member on the other end side in the axial direction of the motor while suppressing an increase in the number of parts.

  According to the present invention, it is possible to provide a motor support structure capable of positioning a shaft center position with high accuracy without requiring high dimensional accuracy for a fixing member or the like and reducing breakage of the fixing member. Can do.

Hereinafter, an embodiment in which the present invention is embodied in an actuator will be described with reference to FIGS.
As shown in FIG. 1, the actuator 1 includes a case 3 as a support member and a motor 3 and a speed reducer 4 for slowing down the rotation of the motor 3.

  As shown in FIGS. 1 to 3, the case 2 is formed in a shape having an accommodation recess 2 a that can substantially accommodate the motor 3 and the speed reduction portion 4. The housing recess 2a has a shape corresponding to the substantially rectangular motor 3 when viewed from the opening direction, and has a motor housing portion 2b having a substantially arc-shaped cross section (see FIG. 6) and one end side in the longitudinal direction of the motor housing portion 2b (FIG. 1). The lower portion in FIG. 3 is formed continuously from the lower side) and includes a speed reduction portion accommodating portion 2c having a shape corresponding to the speed reduction portion 4.

  Further, a groove 2d as an axial direction restricting portion deeper than the other portion (the arc of the cross section is larger than the other portion) is provided on one end side in the longitudinal direction of the motor housing portion 2b (lower side in FIGS. 1 to 3). Is formed. Further, as shown in FIG. 2 and FIG. 6, the distance from the opening 2e of the housing recess 2a is constant (that is, the upper surface is flat) at the intermediate portion in the longitudinal direction at the bottom of the motor housing 2b. Thus, a pair of substantially rectangular support pedestals 2f and 2g are provided so as to protrude in the longitudinal direction. Further, the other end portion in the longitudinal direction of the motor housing portion 2b (upper side in FIGS. 1 to 3) is formed with a convex portion housing portion 2h as a spring support portion having a smaller width in the short direction than other portions. Yes.

  Further, in the opening 2e of the housing recess 2a (a surface parallel to the support pedestals 2f and 2g outside the housing recess 2a), the motor housing portion 2b is positioned at both sides in the short direction as shown in FIGS. As shown in FIG. 6, a pair of female screw portions 2i is formed. The female screw portion 2i is formed at the same position as the support base portion 2f on one end side (lower side in FIG. 2) in the longitudinal direction (vertical direction in FIG. 2) of the motor housing portion 2b. A positioning hole 2j is formed in the opening 2e of the housing recess 2a on the one end side in the longitudinal direction of the motor housing 2b (lower side in FIG. 2) from the female screw 2i.

  As shown in FIGS. 1, 3, and 6, the motor 3 is formed in a substantially cylindrical shape. Specifically, as shown in FIG. 3, the motor 3 includes a substantially bottomed cylindrical yoke housing 11 having an outer shape and a frame end that closes an opening (the lower end in FIG. 3) of the yoke housing 11. Twelve. The motor 3 includes a magnet 13 fixed to the inner peripheral surface of the yoke housing 11, a rotating shaft 14 that is rotatably supported so that a part of the frame end 12 protrudes to the outside, and the yoke housing 11 includes an armature core 15 and a commutator 16 which are fixed to a rotating shaft 14 (winding is wound). A small diameter portion 11a having a smaller diameter than the other portions is formed on the bottom portion (upper end portion in FIGS. 1 and 3) of the yoke housing 11, and a bearing (not shown) is held in the small diameter portion 11a. The end of the rotating shaft 14 is supported. Further, a flange portion 12a that protrudes from the outer periphery of the yoke housing 11 and can be received in the groove 2d is formed in a part of the frame end 12 in the circumferential direction. Here, the width of the groove 2d (the length along the axial direction of the rotating shaft 14) is set larger than the thickness of the flange portion 12a (the length along the axial direction of the rotating shaft 14). Further, circumferential positioning protrusions 12 b protruding from the outer periphery of the yoke housing 11 are also formed in a part of the frame end 12 in the circumferential direction other than the flange portion 12 a (intermediate portion in the left-right direction in FIG. 3).

  As shown in FIG. 3, the motor 3 has a portion of the outer periphery of the yoke housing 11 (the first contact portion 11b in FIG. 6) so that the flange portion 12a is accommodated in the groove 2d. The motor receiving portion 2b is substantially accommodated so that the small diameter portion 11a is disposed in the convex portion accommodating portion 2h so as to be in contact with and supported on the support base portions 2f and 2g. .

  As shown in FIG. 3, the speed reducing unit 4 includes a worm shaft 21 and a worm wheel 22. The worm shaft 21 is fixed to the rotary shaft 14 protruding outward from the frame end 12 so as to be integrally rotatable in the speed reduction portion accommodating portion 2c. Further, the worm wheel 22 is rotatably supported in the speed reduction portion accommodating portion 2 c and is meshed with the worm 21 a of the worm shaft 21. The worm wheel 22 is connected to an external load (not shown) and serves as an output shaft of the actuator 1.

  As shown in FIGS. 1 and 6, the motor 3 is supported by the first contact portion 11 b that is a part of the outer periphery being in contact with the support pedestal portions 2 f and 2 g, and with respect to the case 2. Two locations on the outer periphery are pressed by the elastic contact portion 31a of the fixed plate 31 as a fixed member to be fixed, and the axial center position is determined by these pressing forces so as to be supported in a radially immovable manner. .

  More specifically, the fixing plate 31 is made of a plate-like metal material as shown in FIGS. 1, 5A, 5B, and 6. FIG. The fixing plate 31 includes a pair of fixing portions 31b corresponding to (in surface contact with) the female screw portion 2i of the opening 2e, and an abutting surface (support base) from the fixing portion 31b to the first abutting portion 11b. The upright portion 31c extending in a substantially vertical direction with respect to the portions 2f and 2g), and the elastic contact having a curved shape so as to protrude from the upright portion 31c toward the shaft center X side of the motor 3 (substantially in an arc shape). It has the part 31a and the connection part 31d which connects the two elastic contact parts 31a. In the fixing portion 31b, a screw through hole 31e (see FIGS. 5A and 6) is formed at a position corresponding to the female screw portion 2i, and the positioning hole is located at a position corresponding to the positioning hole 2j. A positioning hole 31f (see FIGS. 1 and 5A) having the same size as 2j is formed.

  The fixing portion 31b of the fixing plate 31 is in a state where a positioning pin (not shown) passes through the positioning hole 31f and is inserted to the positioning hole 2j (see FIG. 2) (positioned with respect to the case 2). It is fixed to the case 2 by a screw 32 that passes through the screw through hole 31e and is screwed into the female screw portion 2i. Further, as shown in FIG. 6, the fixed plate 31 is formed symmetrically with respect to the plane including the first contact portion 11b and the shaft center X of the motor 3, and the elastic contact portions 31a are respectively The motor 3 (at a position symmetrical with respect to the plane including the first contact portion 11b and the axis center X of the motor 3 is separated from the one contact portion 11b by 90 ° or more (centering on the axis center X of the motor 3). Two places on the outer periphery of the yoke housing 11) are pressed. That is, as shown in FIG. 6, the two elastic contact portions 31a push the motor 3 (yoke housing 11) equally to each other (in the left-right direction in FIG. 6) and both support pedestals 2f and 2g. By pressing toward the side, the motor 3 is supported together with the supporting base portions 2f and 2g so as to be unable to move in the radial direction, so-called three points.

  In the fixing plate 31, the fixing part 31b (screw through hole 31e), the upright part 31c, and the elastic contact part 31a are formed on the same straight line (on the straight line in the left-right direction in FIG. 5A). At the same time, the motor 3 is disposed at the same position in the axial direction (same position as the support pedestal 2f on one end side in the axial direction).

  Further, in the connecting portion 31d of the fixed plate 31 according to the present embodiment, at the position corresponding to the frame end 12, as shown in FIG. 1, the circumferential positioning projection 12b and the circumferential direction (of the yoke housing 11) are provided. A pair of engaging portions 31g that can be engaged is formed. The pair of engaging portions 31g regulates the rotation of the frame end 12 (the motor 3) around the axis center X by abutting with both sides in the circumferential direction of the circumferential positioning projection 12b.

  Further, as shown in FIG. 1, the motor 3 is axially moved by a spring member 33 whose other axial end surface (upper end surface in FIG. 1) is supported by the convex portion accommodating portion 2 h (spring support portion) of the case 2. It is pressed to one side (lower side in FIG. 1), and movement in one axial direction is restricted by the groove 2d (axial restriction part) of the case 2, so that it cannot move in the axial direction. Has been.

  More specifically, the spring member 33 is made of a bent bar-shaped metal material as shown in FIG. 1 and FIGS. As shown in FIG. 4A, the spring member 33 has a substantially U-shaped center portion 33a and a right angle from both ends of the center portion 33a (in FIG. 4 (b) (c) has a pair of arm portions 33b that bend and extend downward, and a pair of pressing pieces 33c that are bent back from the tip of the arm portion 33b and have elasticity. .

  The spring member 33 is supported by the arm portion 33b being in contact with the convex portion accommodating portion 2h of the case 2 (the surface facing the other axial end surface of the motor 3), and the pressing piece 33c is supported by the motor 3 (of the yoke housing 11). The other end surface in the axial direction (position avoiding the small diameter portion 11a) is disposed so as to be elastically pressed. The motor 3 is made immovable in the axial direction by the pressing of the spring member 33 so that the flange portion 12a of the frame end 12 abuts (presses contact) with the inner surface of the groove 2d on one axial end side. .

Next, characteristic effects of the above embodiment will be described below.
(1) The motor 3 is supported by the first contact portion 11b, which is a part of the outer periphery, being in contact with and supported by the support base portions 2f and 2g of the case 2 as a support member, and is fixed to the case 2 Two portions on the outer periphery are pressed by the elastic contact portion 31a of the fixed plate 31 serving as a member, and the axial center position is determined by these pressing forces, and is supported so as not to move in the radial direction. Therefore, the axial center position can be positioned with high accuracy without requiring high dimensional accuracy for the fixing member or the like as in the case where the fixing member is directly (rigidly) supported by the supporting member (conventional). Further, stress caused by vibration of the motor 3 or the like is prevented from being concentrated on a part of the fixing member (for example, a bent portion) as in the case where the supporting member is directly (rigidly) supported by the fixing member (conventional). As a result, it is possible to reduce the fact that the fixing member (fixing plate 31) is broken.

  (2) The motor 3 is separated from the first contact portion 11b by 90 ° or more on the outer periphery, and two symmetrical positions are elastic with respect to the plane including the first contact portion 11b and its own axis center X. Since it is pressed by the contact portion 31a, the center position of the shaft is determined with a simple configuration in a well-balanced manner and is supported so as to be immovable in the radial direction. In other words, if the configuration other than pressing at two symmetrical positions as described above is used, the shape of the fixed plate 31 may be complicated, such that each elastic contact portion needs to have a different shape, etc. Although it becomes difficult to support, this can be avoided easily.

  (3) The fixing member is fixed to the case 2 on the outside of the two elastic contact portions 31a pressing the two locations on the outer periphery of the motor 3, the connecting portion 31d connecting them, and the two elastic contact portions 31a. A single plate-like fixing plate 31 having a fixing portion 31b. If it does in this way, since a fixing member is the plate-shaped fixing plate 31 of 1 sheet, it can be materialized with a simple structure and a small number of parts. Further, since the fixing plate 31 is fixed to the case 2 on the outside of the elastic contact portion 31a connected by the connecting portion 31d, for example, each of the elastic contact portions 31a is independent (there is no connecting portion 31d). The pressing force for pressing the outer periphery of the motor 3 can be easily increased as compared with the case where two fixing members are used.

  (4) The fixed plate 31 extends along a substantially vertical direction with respect to the contact surfaces (support base portions 2f and 2g) of the first contact portion 11b between the fixed portion 31b and the elastic contact portion 31a. It has an upright part 31c extending in the direction. Therefore, it is possible to easily increase the resistance to resistance against the force in the direction of lifting from the case 2 (support pedestal portion 2f) of the motor 3 (first contact portion 11b) as compared with the case without the upright portion 31c. it can.

  (5) The fixed plate 31 has a fixed portion 31b (screw through hole 31e), an upright portion 31c, and an elastic contact portion 31a formed on the same straight line, and the same position in the axial direction of the motor 3 (one axial end) At the same position as the side support pedestal 2f). Therefore, as compared with those not formed on the same straight line or not arranged at the same position, the strength resistance against the force in the direction of lifting from the case 2 (support base 2f) of the motor 3 (first contact portion 11b). Can be easily strengthened.

  (6) The motor 3 has one axial end side (in FIG. 1) with a spring member 33 whose other axial end surface (upper end surface in FIG. 1) is supported by the convex portion accommodating portion 2 h (spring support portion) of the case 2. ) And the movement toward one side in the axial direction is restricted by the groove 2d (axial direction restricting portion) of the case 2, so that it is impossible to move in the axial direction with a simple configuration.

The above embodiment may be modified as follows.
In the above embodiment, the fixing member is a single plate-like fixing plate 31 having two elastic contact portions 31a, a connecting portion 31d that connects them, and a fixing portion 31b, but is not limited thereto. The motor 3 may be similarly supported by a plurality of fixing members.

  For example, as shown in FIG. 7, the connecting portion 31d of the fixed plate 31 of the above embodiment is not formed, and the motor 3 is similarly supported by a pair of fixed plates 41 having a shape in which the fixed plate 31 is divided into two. May be.

-The elastic contact part 31a of the said embodiment may be changed into another shape, if the two places of the outer periphery of the motor 3 (yoke housing 11) can be pressed similarly.
For example, as shown in FIG. 8, the fixing plate 31 according to the above embodiment has an elastic contact portion 42 a that protrudes in a substantially hemispherical shape toward the axis center X (see FIG. 6) of the motor 3. You may change to

  In the above embodiment, the frame end 12 and the fixed plate 31 are separated from each other. However, the present invention is not limited to this and may be integrated. For example, as shown in FIG. 9, an end portion 43 a having substantially the same shape as the frame end 12 of the above embodiment, and a fixing plate portion 43 b as a fixing member having substantially the same shape as the fixing plate 31 of the above embodiment are provided. The plate member 43 may be formed by being connected by the connecting portion 43c at the circumferential positioning protrusion 12b and the engaging portion 31g in the above embodiment. Even in this case, of course, the motor 3 is supported while the first abutting portion 11b (see FIG. 6), which is a part of the outer periphery, is abutted against and supported by the support base portions 2f and 2g of the case 2. Two portions on the outer periphery are pressed by the elastic contact portion 31a of the plate portion 43b, and the center position of the shaft is determined by the pressing force so that the plate portion 43b is supported so as not to move in the radial direction. In this case, the spring member 33 of the above embodiment can be omitted.

The spring member 33 in the above embodiment may be changed to another one (for example, a wave washer) as long as it has a similar function.
Further, for example, as shown in FIGS. 10 to 12, the spring member 33 is arranged such that the other end side in the axial direction (upper side in FIG. 10) of the motor 3 (housing 11) is the first contact portion 11 b ( 6 may be changed to a spring member 44 having a radial pressing portion 33d that presses in the direction in which the contact is made (in FIG. 10, the back direction in FIG. 10 and downward in FIG. 11). In other words, the spring member 44 has a radial pressing portion 33d extending obliquely toward the sides approaching each other from the tips of a pair of pressing pieces 33c similar to the above embodiment, and the radial pressing portion 33d is the small diameter portion 11a. (See FIG. 11) is arranged so as to press in the direction (downward in FIG. 11) in which the first contact portion 11b (see FIG. 6) in the radial direction comes into contact. In addition, as shown in FIG. 12, the spring member 44 of this example is inclined so that a pair of arm portions 33b similar to those of the above-described embodiment are separated in advance (in a single state not assembled) toward the tip. Is formed. Then, as shown in FIG. 11, the spring member 44 is compressed and accommodated in the convex portion accommodating portion 2h of the case 2 so that the arm portion 33b is substantially parallel to the arm portion 33b. It is fixed in the convex portion accommodating portion 2h by elasticity (a force for spreading and stretching).

  In this way, the motor 3 has the other end in the axial direction (the upper side in FIG. 10) that is not pressed by the elastic contact portion 31 a (see FIG. 1) at the radial pressing portion 33 d of the spring member 44. Is pressed in the direction in which the first contact portion 11b in the direction comes into contact (the bottom direction of the motor housing portion 2b and the support pedestal portion 2g). Therefore, it is possible to prevent the motor 3 from lifting from the case 2 (support pedestal portion 2g) on the other axial end side while suppressing an increase in the number of parts.

-In above-mentioned embodiment, although the elastic contact part 31a pressed two places of the outer periphery of the motor 3, it is not limited to this, You may provide an elastic contact part so that three or more places may be pressed. .
In the above embodiment, the elastic contact portion 31a presses two symmetrical positions with respect to the plane including the first contact portion 11b and the axis center X of the motor 3, but the invention is not limited to this. The asymmetric position may be pressed.

  In the above embodiment, the fixing plate 31 (fixing member) has a contact surface (support pedestal portions 2f and 2g) of the first contact portion 11b between its own fixed portion 31b and the elastic contact portion 31a. However, the present invention is not limited to this, and the fixing member may be changed to a shape having no upright part.

  In the above embodiment, the fixing plate 31 has the fixing portion 31b (screw through hole 31e), the upright portion 31c, and the elastic contact portion 31a formed on the same straight line, and the same position in the axial direction of the motor 3 (axis However, the present invention is not limited to this, and it may not be formed on the same straight line or be arranged at the same position.

In the above embodiment, the movement of the motor 3 in the axial direction is restricted by the spring member 44, the groove 2d, etc., but the present invention is not limited to this, and the movement in the axial direction may be restricted by another configuration.
In the above embodiment, the support member is embodied as the actuator 1 with the case 2, but the invention is not limited to this. For example, the support member is an inner panel of the vehicle door. It may be embodied in other things.

The top view of the actuator in this Embodiment. The top view of the case in this Embodiment. The top view of the case and motor in this Embodiment. (A) The top view of the spring member in this Embodiment. (B) The front view of a spring member similarly. (C) The side view of a spring member similarly. (A) The top view of the fixed plate in this Embodiment. (B) Front view of the fixed plate. The principal part sectional drawing of the actuator in this Embodiment. The principal part sectional drawing of the actuator in another example. (A) The top view of the fixed plate in another example. (B) Front view of the fixed plate. The principal part top view of the actuator in another example. The principal part top view of the actuator in another example. The schematic diagram for demonstrating the spring member in another example. (A) The top view of the spring member in another example. (B) The front view of a spring member similarly. (C) The side view of a spring member similarly.

Explanation of symbols

  2 ... Case (support member), 2d ... groove (axial restriction part), 3 ... motor, 11b ... first contact part, 31, 41, 42 ... fixing plate (fixing member), 31a, 42a ... elastic contact Part 31b ... fixed part, 31c ... upright part, 31d ... connecting part, 33, 44 ... spring member, 33d ... radial direction pressing part, 43b ... fixed plate part (fixing member), X ... axis center.

Claims (7)

A motor support structure for supporting a substantially cylindrical motor with respect to a support member,
A first contact portion, which is a part of the outer periphery of the motor, is supported by being brought into contact with the support member, and an elastic contact portion of a fixing member fixed to the support member is used to support the outer periphery of the motor. A motor support structure, wherein the motor is supported so as not to move in the radial direction by pressing at least two locations and determining the axial center position of the motor by the pressing force. The motor support structure according to claim 1,
The elastic contact portions are spaced apart from the first contact portion by 90 ° or more, and are symmetrical with respect to a plane including the first contact portion and the shaft center of the motor. A support structure for a motor, wherein the portion is pressed. The motor support structure according to claim 2,
The fixing member is fixed to the support member on the outside of the two elastic contact portions that press the two locations on the outer periphery of the motor, the connecting portion that connects them, and the two elastic contact portions. A support structure for a motor, which is a single plate-like fixed plate having a portion. The motor support structure according to any one of claims 1 to 3,
The fixing member has an upright portion extending in a substantially vertical direction with respect to the contact surface of the first contact portion between the fixed portion and the elastic contact portion. Support structure. The motor support structure according to claim 4,
The motor support structure, wherein the fixing member includes the fixing portion, the upright portion, and the elastic contact portion formed on the same straight line and arranged at the same position in the axial direction of the motor. . The motor support structure according to any one of claims 1 to 5,
The support member is formed with an axial restricting portion capable of restricting movement of the motor in one axial direction, and supports a spring member that presses the other axial end surface of the motor in the axial one side. A support structure for a motor, wherein a spring support portion is formed. The motor support structure according to claim 6,
The elastic contact portion is arranged to press one side in the axial direction of the motor,
The motor support structure according to claim 1, wherein the spring member includes a radial pressing portion that presses the other axial end of the motor in a direction in which the first contact portion in the radial direction contacts.

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