JP2015174487A - Driving device of vehicle side mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device of a vehicle side mirror which stably holds a motor and prevents an output shaft from deviating during rotation thereby achieving stable operation.SOLUTION: An upper holding part 75 and an intermediate holding part 76, which are respectively provided at both end parts of a motor case in an output shaft direction and hold a bearing part, and a lower holding part 77, which rotatably holds a tip part of an output shaft, are integrally molded in a holder 70.

Description

  The present invention relates to a drive device for a side mirror for a vehicle provided on a side portion of an automobile, for example.

  Conventionally, a side mirror for rearward confirmation is attached to a side portion of a vehicle. The side mirror includes a mirror housing to which the mirror is attached, a base attached to the vehicle body, and an electric storage device for switching between a storage state and a use state by rotating the mirror housing with respect to the base. The electric storage device includes a motor and a speed reduction mechanism, and the motor is held by a holder (see, for example, Patent Documents 1 and 2).

  In Patent Document 1, a motor case is held by a holder, and the holder is assembled to a housing that houses a speed reduction mechanism. The output shaft side of the motor case is held by a bearing member that is a separate member from the holder. Furthermore, the front end portion of the output shaft of the motor is held by a bearing portion extending from the holder.

  In Patent Document 2, the holder for holding the motor case is assembled to the housing. The housing is provided with a bearing portion that holds the tip of the output shaft of the motor.

JP 2011-5915 A JP 2011-20676 A

  By the way, in patent document 1, a motor case is hold | maintained at a holder and the output-shaft side of a motor case is hold | maintained by the bearing member comprised with a member different from a holder. Accordingly, different parts of the motor are held by the two members, the holder and the bearing member, respectively. However, since the bearing member is a separate member from the holder, relative displacement between the two members may occur due to manufacturing errors and assembly errors between the two members. In this case, it is conceivable that the rotation center line of the output shaft of the motor is inclined with respect to the normal state, or the output shaft is shaken during rotation, so that stable operation cannot be realized. Further, in Patent Document 1, the tip of the output shaft of the motor is also held, but since the holding portion extends from the holder, it is held by a member separate from the bearing member on the output shaft side of the motor case. As a result, as described above, the output shaft may be shaken during rotation.

  Further, in Patent Document 2, since the motor case is held by the holder and the distal end portion of the output shaft is held by the housing formed of a member different from the holder, the same problem as in Patent Document 1 may occur.

  Furthermore, the output shaft of the motor is generally rotatably held by bearings provided at both ends of the motor case. However, in Patent Documents 1 and 2, the output shaft of the motor case is Since the bearing portion on the opposite side is not held by a holder or the like, the motor case itself becomes unstable, and as a result, the output shaft may be shaken during rotation.

  The present invention has been made in view of such a point, and an object of the present invention is to stably hold the motor and realize stable operation so that the output shaft does not shake during rotation. is there.

  In order to achieve the above object, in the present invention, both bearing portions of the motor case and the tip portion of the output shaft are held by a holder made of a single member.

The first invention is
In the vehicle side mirror drive device disposed on the side of the vehicle,
A motor having an output shaft and a motor case that rotatably holds the output shaft;
A holder made of a single member for holding the motor,
The holder includes a first holding portion and a second holding portion for holding a first bearing portion and a second bearing portion provided at both ends of the motor case in the output shaft direction, and the motor case of the output shaft. A third holding portion that rotatably holds the protruding tip portion is formed integrally with the main body portion of the holder.

  According to this configuration, since both end portions of the motor case are respectively held by the holder, the motor is stably held by the holder. And the 1st bearing part and 2nd bearing part of a motor case, and the front-end | tip part of an output shaft are hold | maintained by the 1st-3rd holding | maintenance part of a holder. Since the first to third holding portions are formed integrally with the main body portion of the holder made of a single member, the relative positions of the first to third holding portions are unlikely to change, and accordingly, the first bearing of the motor case And the center of the second bearing portion and the center of the tip end portion of the output shaft are held by the holder.

According to a second invention, in the first invention,
The holder has a motor insertion portion opened in a radial direction of the output shaft of the motor,
The first and second holding portions are opened in the opening direction of the motor insertion portion, and have a first claw portion and a second claw portion that engage with the first bearing portion and the second bearing portion, respectively. The third holding portion has a third claw portion that is opened in the opening direction of the motor insertion portion and that engages with a tip portion of the output shaft.

  According to this configuration, when the motor is held in the holder, when the motor is inserted from the motor insertion portion of the holder, the first to third holding portions are opened, so the first bearing portion and the second bearing The part is inserted into the first holding part and the second holding part, and the output shaft is inserted into the third holding part. And the 1st claw part and the 2nd claw part are engaged with the 1st bearing part and the 2nd bearing part, and the 1st bearing part and the 2nd bearing part are held, and the 3rd claw part is the tip of an output shaft. Engage with the part and hold.

According to a third invention, in the second invention,
The first and second holding portions sandwich the first bearing portion and the second bearing portion in the radial direction of the output shaft, respectively, and the third holding portion has a tip portion of the output shaft as the output shaft. It is characterized by being sandwiched in the radial direction.

  According to this configuration, the first bearing portion and the second bearing portion and the tip end portion of the output shaft are held so as not to rattle in the radial direction.

According to a fourth invention, in any one of the first to third inventions,
The first holding portion is formed so as to abut on one end surface of the motor case in the output shaft direction,
The second holding portion is formed so as to contact the other end surface in the output shaft direction of the motor case.

  According to this configuration, the first holding portion and the second holding portion are brought into contact with both end faces of the motor case, whereby the motor case is positioned also in the axial direction of the output shaft.

  According to the first aspect of the invention, both the bearing portion of the motor case and the tip end portion of the output shaft are held by the first to third holding portions integrally formed on the holder made of a single member. The motor can be held stably, and stable operation can be realized by preventing the output shaft from shaking during rotation.

  According to the second aspect of the present invention, the first and second bearing portions of the motor case and the tip end portion of the output shaft are held in the holder only by performing an operation of inserting the motor from the motor insertion portion of the holder. Therefore, the work of assembling the motor to the holder can be easily performed.

  According to the third invention, since the first to third holding portions sandwich the first bearing portion and the second bearing portion and the tip end portion of the output shaft in the radial direction, the first bearing portion and the second bearing portion The center and the center of the output shaft can be made to coincide with each other with high accuracy, and the operation can be further stabilized.

  According to the fourth invention, since the first holding part abuts on one end surface of the motor case and the second holding part abuts on the other end surface of the motor case, the motor case can be positioned also in the axial direction of the output shaft, The rattling of the motor case can be prevented.

It is a disassembled perspective view of the side mirror for vehicles concerning an embodiment. It is a disassembled perspective view of an electric storage apparatus. It is a front view of the holder holding the motor. It is a top view of the holder holding the motor. It is the perspective view which looked at the holder from the front side. It is the VI-VI sectional view taken on the line of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is an exploded perspective view of a vehicle side mirror 1 according to an embodiment of the present invention. The vehicle side mirror 1 is a so-called door mirror that is attached to a sash front end portion of a door (not shown) disposed on a side portion of an automobile.

  In the following description, the right side mirror 1 will be described, but the left side mirror has the same configuration as that of the right side mirror 1 except that it is bilaterally symmetric. To do.

  In the description of this embodiment, for convenience of explanation, the front side of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear”, and the left side in the vehicle width direction is simply referred to as “left”. The right side in the vehicle width direction is simply called “right”.

  The side mirror 1 includes a mirror 2 for rearward confirmation, a base portion 3 attached to a door, a mirror housing 4 in which the mirror 2 is disposed, an angle adjusting unit 5 for adjusting the angle of the mirror 2, and a mirror housing. An electric storage device (drive device) 6 that switches 4 between a storage state and a use state is provided.

  The mirror 2 is long in the left-right direction. A heater can be provided on the back surface of the mirror 2.

  The base portion 3 includes a housing support plate portion 31 that extends to the right side, and a vertical plate portion 32 that extends in the vertical direction along the sash front end portion of the door. The vertical plate portion 32 is a portion that is fastened and fixed to the sash front end portion by a fastening member (not shown). A shaft of the electric storage device 6 is attached to the housing support plate portion 31. A waterproof seal rubber 7 is disposed between the vertical plate portion 32 of the base portion 3 and the sash front end portion.

  The mirror housing 4 includes a housing main body 41, an upper housing cover 42, a lower housing cover 43, and a winker unit 44. The housing body 41, the upper housing cover 42, and the lower housing cover 43 are formed by molding a resin material.

  The housing body 41 has a shape that is long in the left-right direction corresponding to the shape of the mirror 2. On the rear side of the housing main body 41, a recess 45 that is long in the left-right direction is formed so as to be recessed forward to accommodate the mirror 2 and the angle adjustment unit 5. The recess 45 is open at the entire rear side.

  The bottom wall 45a of the recess 45 extends in the vertical direction. The peripheral wall 45b of the recess 45 extends rearward as a whole from the peripheral edge of the bottom wall 45a. The peripheral wall portion 45b is continuous in the circumferential direction of the bottom wall portion 45a. A boss B for fastening the angle adjustment unit 5 is provided on the bottom wall 45a.

  As shown in FIG. 1, the upper housing cover 42 is formed to bulge forward so as to cover the front portion of the housing body 41 from the front. The upper housing cover 42 is formed so as to extend from the right edge to the left edge of the housing main body 41 and from the upper edge to the vicinity of the lower edge. A claw 42 a is formed on the inner surface of the upper housing cover 42 so as to protrude rearward, and the upper housing cover 42 is fixed to the housing main body 41 by engaging the claw 42 a with the housing main body 41. ing. The winker unit 44 is attached in the vicinity of the central portion of the upper housing cover 42 in the vertical direction.

  The lower housing cover 43 is formed so as to cover the lower part of the housing body 41 from below. The lower housing cover 43 is also fixed to the housing body 41 in the same manner as the upper housing cover 42.

  Although not shown, the mirror 2 is held by a mirror holder. The mirror holder is affixed to the back surface of the mirror 2 (surface opposite to the mirror surface). A center pivot receiving portion (not shown) that is pivotally coupled to a center pivot 51a of the angle adjusting unit 5 described later is provided at a substantially central portion of the mirror holder. A right and left pivot receiving portion (not shown) that is pivotally coupled to a left and right adjusting rod 56 described later is provided at a right position of the center pivot receiving portion of the mirror holder. Also, an upper and lower pivot receiving portion (not shown) that is pivotally coupled to an upper and lower adjustment rod 55 described later is provided at a lower position of the center pivot receiving portion of the mirror holder. The mirror holder is tiltably coupled to the angle adjustment unit 5 by the three pivot receiving portions. Since this pivot coupling structure is well known in the art, a detailed description thereof will be omitted.

  The angle adjustment unit 5 includes a casing 51 and an angle adjustment mechanism (including an upper / lower adjustment rod 55 and a left / right adjustment rod 56) accommodated in the casing 51.

  The upper and lower adjustment rods 55 and the left and right adjustment rods 56 are supported by the casing 51 so as to be able to reciprocate. Housed in the casing 51 are a vertical adjustment motor (not shown) and a feed screw mechanism that converts the rotational force of the motor into the axial movement force of the vertical adjustment rod 55. The casing 51 accommodates a left / right adjustment motor (not shown) and a feed screw mechanism that converts the rotational force of the motor into an axial moving force of the left / right adjustment rod 55. The vertical adjustment rod 55 and the horizontal adjustment rod 55 can be individually reciprocated by rotating the vertical adjustment motor and the horizontal adjustment motor forward and backward, respectively.

  As shown in FIG. 2, the electric storage device 6 includes a fixed shaft 61 that is fixed to the base portion 3, and a movable casing 62 that is fixed to the housing body 41 and rotates around the fixed shaft 61. The mirror housing 4 can be switched between a storage state and a use state by operating a button (not shown) disposed in the vehicle interior. The retracted state is a state in which the right end of the mirror housing 4 approaches the window glass (not shown) of the door and the mirror surface of the mirror 2 extends in the front-rear direction. The used state is the right end of the mirror housing 4. Is a posture state in which the mirror surface of the mirror 2 extends in the left-right direction away from the window glass of the door.

  A large-diameter mounting seat 61 a is provided below the fixed shaft 61. The mounting seat 61 a protrudes downward from the bottom wall portion of the movable casing 62 and is fixed to the housing support plate portion 31 of the base portion 3. Above the mounting seat 61a of the fixed shaft 61, a small-diameter cylindrical portion 61b extending upward is formed. The cylindrical portion 61 b passes through a through hole (not shown) formed in the bottom wall portion of the movable casing 62 and is accommodated in the movable casing 62. A center line of the cylindrical portion 61 b of the fixed shaft 61 is a rotation axis of the mirror housing 4. A plurality of grooves 61c are formed on the outer peripheral surface of the cylindrical portion 61b. The groove 61c extends upward from a portion above the lower end of the cylindrical portion 61b.

  The movable casing 62 is supported so as to be rotatable with respect to the cylindrical portion 61 b of the fixed shaft 61. The height of the movable casing 62 on the side supported by the fixed shaft 61 is lower than the height of the side not supported by the fixed shaft 61.

  The movable casing 62 is configured by combining a lower case constituent member 63 and an upper case constituent member 64 that are divided into two vertically. An engaging convex portion 63 a is formed on the outer surface of the lower case constituent member 63. The upper case constituent member 64 is formed with an engaging portion 64a that engages with the engaging convex portion 63a. When the engaging portion 64a of the upper case constituent member 64 is engaged with the engaging convex portion 63a of the lower case constituent member 63, the two case constituent members 63 and 64 are coupled.

  Inside the movable casing 62 are a motor 65 for driving the mirror housing 4, a worm wheel 66, a rotating shaft 67 that supports the worm wheel 66, a control board 68, and a holder 70 that holds the motor 65. Contained. Further, inside the movable casing 62, a sun gear 80, a ring member 81 engaged with the sun gear 80, a coil spring 82 as a biasing member that biases the sun gear 80 and the ring member 81 downward, and a coil spring 82 are fixed. A fixing member 83 is also accommodated.

  The sun gear 80 has an annular shape, and a large number of teeth are continuously formed on the outer peripheral surface. In a state where the cylindrical portion 61b of the fixed shaft 61 is inserted into the sun gear 80, the sun gear 80 is rotatable around the cylindrical portion 61b. On the inner peripheral surface of the sun gear 80, a plurality of convex portions 80a are formed at intervals in the circumferential direction.

  The cylindrical member 61 b of the fixed shaft 61 is inserted into the ring member 81. In this state, the ring member 81 enters the inside of the sun gear 80. On the inner peripheral surface of the ring member 81, a protruding portion 81a that enters the groove 61c of the cylindrical portion 61b of the fixed shaft 61 is formed. Therefore, the ring member 81 is engaged with the cylindrical portion 61b inserted therein and can rotate integrally in the circumferential direction.

  In addition, a plurality of notches 81b that open downward are formed in the lower portion of the ring member 81 at intervals in the circumferential direction. The projecting portion 80a of the sun gear 80 is fitted into the notch portion 81b. The sun gear 80 and the ring member 81 can be rotated together by fitting the convex portion 80a of the sun gear 80 into the notch 81b of the ring member 81.

  The lower end portion of the coil spring 82 is in contact with the upper end portion of the ring member 81. A fixing member 83 is in contact with the upper end portion of the coil spring 82. The fixing member 83 is fixed to the cylindrical portion 61b of the fixed shaft 61 at a position where the coil spring 82 in a free state is contracted by a predetermined amount. The urging force of the coil spring 82 directly acts on the ring member 81. The ring member 81 presses the sun gear 80 downward, and the sun gear 80 is pressed against the upper surface of the mounting seat 61a.

  The motor 65 is a known electric motor and includes a motor case 65a and an output shaft 65b. The motor 65 is accommodated in the movable casing 62 so that the axial direction of the output shaft 65b is the vertical direction and the output shaft 65b protrudes downward. The output shaft 65b has a motor shaft 65e and a worm gear 65f.

  The motor case 65a is formed, for example, by processing a metal plate into a cylindrical shape. An upper bearing portion (first bearing portion) 65c that rotatably supports the upper end portion of the motor shaft 65e is formed on the upper end surface (one end surface) of the motor case 65a so as to protrude upward. The upper bearing portion 65c has a disc shape integrally formed with the upper end surface of the motor case 65a. Further, an intermediate bearing portion (second bearing portion) 65d (shown in FIGS. 3 and 6) that rotatably supports an intermediate portion in the vertical direction of the motor shaft 65e is provided on the lower end surface (the other end surface) of the motor case 65a. It is formed so as to protrude. The shape of the intermediate bearing portion 65d is substantially the same as the shape of the upper bearing portion 65c.

  The lower side of the portion of the motor shaft 65e supported by the intermediate bearing portion 65d protrudes below the motor case 65a. A worm gear 65f is fixed to a portion of the motor shaft 65e protruding downward from the motor case 65a. A small-diameter portion 65g is provided at the tip (lower end) of the worm gear 65f. The small diameter portion 65g has a cylindrical shape having a center line that coincides with the axis of the output shaft 65b.

  As shown in FIG. 5 and the like, the holder 70 that holds the motor 65 is a single member that is integrally molded using a resin material. The holder 70 has a shape close to a box shape that is long in the vertical direction. As shown in FIG. 5, the entire front side is open, and this open portion serves as a motor insertion portion 70a. The holder 70 includes a back plate portion 71 extending in the vertical direction, and a first side plate portion 72 and a second side plate portion 73 extending from both side edge portions of the back plate portion 71 to the front side. The first side plate portion 72 and the second side plate portion 73 constitute a main body portion of the holder 70. A control board 68 is disposed on the holder 70. The control board 68 is for controlling the motor 65.

  As shown in FIGS. 3 and 6, the motor case 65 a of the motor 65 is accommodated in a space surrounded by the back plate portion 71, the first side plate portion 72, and the second side plate portion 73. In the accommodated motor 65, the output shaft 65b extends in the vertical direction. That is, the motor insertion portion 70 a is a portion opened in the radial direction of the output shaft 65 b of the motor 65 in the holder 70.

  The first side plate portion 72 and the second side plate portion 73 extend substantially in parallel. An upper holding portion (first holding portion) 75 is provided at an upper end portion between the first side plate portion 72 and the second side plate portion 73, and a lower end portion between the first side plate portion 72 and the second side plate portion 73. Further, an intermediate holding part (second holding part) 76 is provided. Further, a lower holding part 77 is provided below the intermediate holding part 76. Further, below the back plate portion 71, a first holding plate portion 78 and a second holding plate portion 79 for holding the rotating shaft 67 shown in FIG. 2 are provided.

  The upper holding portion 75 has a plate shape extending substantially horizontally, and is continuous with the inner surfaces of the back plate portion 71, the first side plate portion 72, and the second side plate portion 73. The upper holding portion 75 is a portion for holding the upper bearing portion 65c of the motor 65, and the upper insertion portion 75a having a notch shape that opens in the opening direction of the motor insertion portion 70a, that is, the front side in FIG. Have. The upper bearing portion 65c of the motor 65 can be inserted into the upper insertion portion 75a from the front side. The upper bearing portion 65c is sandwiched in the radial direction of the output shaft 65b while being inserted into the upper insertion portion 75a.

  Upper claws (first portions) engaged with the upper bearing portion 65c in the state of being inserted into the upper insertion portion 75a from the front side of the holder 70 are located at opposite sides of the both side edges of the upper insertion portion 75a. Claw part) 75b is projected. The distance between the tips of the upper claw portions 75 b and 75 b is smaller than the outer diameter of the upper bearing portion 65 c of the motor 65.

  The part which contacts the upper bearing part 65c in the both-sides edge part of the upper insertion part 75a is made into the curved part 75c curvedly formed so that the outer shape of the upper bearing part 65c may be followed. By forming the curved portion 75 c, the upper bearing portion 65 c is fitted to both side edges of the upper insertion portion 75 a and is difficult to move to the front side.

  Further, the back side of the curved portion 75c at both side edges of the upper insertion portion 75a extends to the vicinity of the back plate portion 71. As a result, the holder 70 is easily elastically deformed so that the vicinity of the upper holding portion 75 of the holder 70 is opened. Is possible.

  The lower surface of the upper holding part 75 is formed so as to contact the upper end surface of the motor case 65a of the motor 65, and the held motor 65 is prevented from being displaced upward from a predetermined position.

  The intermediate holding portion 76 has a plate shape extending substantially parallel to the upper holding portion 75 and is continuous with the inner surfaces of the back plate portion 71, the first side plate portion 72, and the second side plate portion 73. The intermediate holding part 76 is a part for holding the intermediate bearing part 65d of the motor 65, and has an intermediate insertion part 76a having a notch shape opened to the front side in FIG. The intermediate bearing portion 65d of the motor 65 can be inserted into the intermediate insertion portion 76a from the front side. The intermediate bearing portion 65d is sandwiched in the radial direction of the output shaft 65b while being inserted into the intermediate insertion portion 76a.

  Intermediate claw portions (second second portions) that engage with the intermediate bearing portion 65d in the state inserted into the intermediate insertion portion 76a from the front side of the holder 70 are located at the opposite sides of the side edge portions of the intermediate insertion portion 76a. Claw part) 76b is projected. The distance between the tips of the intermediate claw portions 76 b and 76 b is smaller than the outer diameter of the intermediate bearing portion 65 d of the motor 65.

  A portion that contacts the intermediate bearing portion 65d at both side edges of the intermediate insertion portion 76a is a curved portion 76c that is curved so as to follow the outer shape of the intermediate bearing portion 65d. Further, the back side of the curved portion 76c at both side edges of the intermediate insertion portion 76a extends to the vicinity of the back plate portion 71. This facilitates elastic deformation so that the vicinity of the intermediate holding portion 76 in the holder 70 is opened, so that the intermediate bearing portion 65d of the motor 65 can be easily inserted into the intermediate insertion portion 76a by moving in the radial direction of the output shaft 65b. Is possible.

  The upper surface of the intermediate holding portion 76 is formed so as to contact the lower end surface of the motor case 65a of the motor 65, and the held motor 65 is prevented from being displaced downward from a predetermined position.

  The lower holding portion 77 is a portion for rotatably holding the lower end portion of the output shaft 65b of the motor 65, and includes a first plate-like portion 77a and a second plate-like portion 77b. The first plate-like portion 77 a extends downward from a portion closer to the first side plate portion 72 than the intermediate insertion portion 76 a of the intermediate holding portion 76. The second plate-like portion 77 b extends downward from a portion closer to the second side plate portion 73 than the intermediate insertion portion 76 a of the intermediate holding portion 76. A worm gear 65f is disposed between the first plate-like portion 77a and the second plate-like portion 77b.

  The lower end portion of the first plate-like portion 77a is bent and extends toward the second plate-like portion 77b, and the lower end portion of the second plate-like portion 77b is bent toward the first plate-like portion 77a. The lower ends of the first plate-like portion 77a and the second plate-like portion 77b are opposed to each other. In addition, a gap is provided between the lower ends of the first plate-like portion 77a and the second plate-like portion 77b.

  A first notch 77c is formed at the lower end of the first plate 77a, and a second notch 77d is formed at the lower end of the second plate 77b, and the first notch 77c and The second notch 77d is open in the opening direction of the motor insertion portion 70a, that is, the front side in FIG.

  The shapes of the peripheral portions of the first notch 77c and the second notch 77d are curved so as to follow the outer peripheral surface of the small diameter portion 65g of the output shaft 65b. The small-diameter portion 65g of the output shaft 65b is sandwiched in the radial direction by the peripheral portions of the first notch 77c and the second notch 77d, and does not move to the front side or the back side. The clamping force by the peripheral portions of the first cutout portion 77c and the second cutout portion 77d can rotate without causing the small diameter portion 65g to sway in the radial direction and with a large resistance between the peripheral portions. Is set to about.

  When the motor 65 is assembled to the holder 70, the motor 65 is arranged on the front side of the holder 70 and moved in the radial direction of the output shaft 65b, and inserted into the holder 70 from the motor insertion portion 70a. That is, the upper bearing portion 65c of the motor case 65a is inserted into the upper insertion portion 75a of the upper holding portion 75, the intermediate bearing portion 65d is inserted into the intermediate insertion portion 76a of the intermediate holding portion 76, and the output shaft 65b The small diameter portion 65g is inserted between the notches 77c and 77d of the lower holding portion 77. At this time, since the upper holding portion 75, the intermediate holding portion 76, and the lower holding portion 77 are opened, the insertion workability is good.

  Further, when the upper bearing portion 65c of the motor case 65a is inserted into the upper insertion portion 75a of the upper holding portion 75, the holder 70 is arranged so that the upper insertion portion 75a expands when the upper bearing portion 65c gets over the upper claw portion 75b. The shape of the holder 70 is restored after the elastic deformation and the upper bearing portion 65c gets over the upper claw portion 75b. The same applies when the intermediate bearing portion 65d of the motor case 65a is inserted into the intermediate insertion portion 76a of the intermediate holding portion 76. Further, when the small-diameter portion 65g of the output shaft 65b is inserted between the cutout portions 77c and 77d of the lower holding portion 77, the first plate-like portion 77a and the second plate-like portion 77b are spaced apart from each other. Will be elastically deformed. Therefore, the assembly work of the motor 65 is easily performed.

  As shown in FIG. 2, the first holding plate portion 78 of the holder 70 extends from the first plate-like portion 77a to the back side. The first holding plate portion 78 is formed with a notch portion 78a that is rotatably held in a state where one end portion of the rotating shaft 67 is fitted. Further, the second holding plate portion 79 extends from the second plate-like portion 77b. The second holding plate 79 is formed with a notch 79a that is rotatably held with the other end of the rotating shaft 67 fitted therein.

  A worm gear 67 a is integrally formed on the outer peripheral surface of the rotating shaft 67. A worm wheel 66 is fixed to the rotary shaft 67 so as to rotate integrally. The worm wheel 66 meshes with the worm gear 65 f of the motor 65.

  The holder 70 is fixed to the movable casing 62 in a state where the holder 70 is accommodated on the side opposite to the side where the fixed shaft 61 is inserted in the movable casing 62. In this state, the worm gear 67 a of the rotating shaft 67 is engaged with the sun gear 80.

  Next, the operation of the electric storage device 6 configured as described above will be described. When current is supplied to the motor 65 of the electric storage device 6, the output shaft 65b rotates. The rotational force of the output shaft 65b is transmitted to the worm wheel 66.

  At this time, the upper bearing portion 65c and the intermediate bearing portion 65d at the upper and lower ends of the motor case 65a are respectively held by the upper holding portion 75 and the intermediate holding portion 76 of the holder 70. 70. The upper bearing portion 65c and the intermediate bearing portion 65d of the motor case 65a and the small-diameter portion 65g at the tip of the output shaft 65b are held by the upper, middle and lower holding portions 75 to 77 of the holder 70. Since the upper, middle, and lower holding portions 75 to 77 are integrally formed with the main body portion of the holder 70 made of a single member, the relative positions of the upper, middle, and lower holding portions 75 to 77 are unlikely to go wrong. Therefore, the center of the upper bearing portion 65c and the intermediate bearing portion 65d of the motor case 65a and the center of the small diameter portion 65g of the output shaft 65b are held by the holder 70 so as to coincide with each other. Thereby, the stable operation | movement is realizable so that the output shaft 65b may not shake during rotation.

  The rotating shaft 67 is rotated by the rotational force transmitted to the worm wheel 66, and the worm gear 67a of the rotating shaft 67 is rotated. The rotational force of the worm gear 67 a of the rotating shaft 67 is transmitted to the ring member 81 via the sun gear 80. Since the ring member 81 is integrated with the fixed shaft 61, the ring member 81 does not rotate. Therefore, the movable casing 62 rotates around the fixed shaft 61. By switching the rotation direction of the motor 65, the mirror housing 4 can be switched between the retracted state and the used state.

  As described above, according to this embodiment, both the bearing portions 65c and 65d of the motor case 65a of the electric storage device 6 and the small diameter portion 65g of the output shaft 65b are integrally formed in the holder 70 made of a single member. Since the upper, middle and lower holding portions 75 to 77 are held, the motor 65 can be held stably and stable operation can be realized by preventing the output shaft 65b from shaking during rotation.

  Further, only by inserting the motor 65 from the motor insertion part 70a of the holder 70, the upper bearing part 65c and the intermediate bearing part 65d of the motor case 65a and the small diameter part 65g of the output shaft 65b are held in the holder 70. Therefore, the work of assembling the motor 65 to the holder 70 can be easily performed.

  Further, since the upper, middle and lower holding portions 75 to 77 sandwich the upper bearing portion 65c and the intermediate bearing portion 65d of the motor case 65a and the small diameter portion 65g of the output shaft 65b in the radial direction, the upper bearing portion 65c. In addition, the center of the intermediate bearing portion 65d and the center of the output shaft 65b can be made to coincide with each other with high accuracy, and the operation can be further stabilized.

  Further, since the upper holding portion 75 contacts the upper end surface of the motor case 65a and the intermediate holding portion 76 contacts the lower end surface of the motor case 65a, the motor case 65a can be positioned in the axial direction of the output shaft 65b. The rattling of 65a can be prevented.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the vehicle side mirror drive device according to the present invention can be used, for example, as an electric storage device that stores a mirror housing.

1 vehicle side mirror 6 electric storage device (drive device)
65 Motor 65a Motor case 65b Output shaft 65c Upper bearing part (first bearing part)
65d Intermediate bearing part (second bearing part)
65g small diameter part (tip of the output shaft)
70 Holder 75 Upper holding part (first holding part)
75b Upper claw part (first claw part)
76 Intermediate holding part (second holding part)
76b Intermediate claw part (second claw part)
77 Lower holding part (third holding part)
77b Lower claw (third claw)

Claims (4)

In the vehicle side mirror drive device disposed on the side of the vehicle,
A motor having an output shaft and a motor case that rotatably holds the output shaft;
A holder made of a single member for holding the motor,
The holder includes a first holding portion and a second holding portion for holding a first bearing portion and a second bearing portion provided at both ends of the motor case in the output shaft direction, and the motor case of the output shaft. A drive device for a side mirror for a vehicle, wherein a third holding portion for rotatably holding the protruding tip portion is formed integrally with a main body portion of the holder. In the vehicle side mirror drive device according to claim 1,
The holder has a motor insertion portion opened in a radial direction of the output shaft of the motor,
The first and second holding portions are opened in the opening direction of the motor insertion portion, and have a first claw portion and a second claw portion that engage with the first bearing portion and the second bearing portion, respectively. The third holding portion is opened in the opening direction of the motor insertion portion, and has a third claw portion that engages with the distal end portion of the output shaft. Drive device. In the vehicle side mirror drive device according to claim 2,
The first and second holding portions sandwich the first bearing portion and the second bearing portion in the radial direction of the output shaft, respectively, and the third holding portion has a tip portion of the output shaft as the output shaft. A side mirror drive device for a vehicle, characterized in that it is clamped in the radial direction. In the drive device of the side mirror for vehicles according to any one of claims 1 to 3,
The first holding portion is formed so as to abut on one end surface of the motor case in the output shaft direction,
The drive device for a vehicle side mirror, wherein the second holding portion is formed so as to be in contact with the other end surface in the output shaft direction of the motor case.

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