JP2015112906A - Vehicle mirror device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable limitation of the rotation of a rotor with respect to a support body by a simple structure.SOLUTION: In a storage mechanism 14 of a vehicle door mirror device, a storage body 24 is rotated around a support shaft 18 by driving a motor 32 and rotating a worm shaft 38 around a gear plate 40. Here, a torsion coil spring 22 bridged between a stand 16 and the support shaft 18 limits the rotation of the support shaft 18 with respect to the stand 16 by an energizing force. Thereby, it is possible to limit the rotation of the support shaft 18 with respect to the stand 16 by a simple structure of the torsion coil spring 22 alone.

Description

  The present invention relates to a vehicle mirror device in which a mirror of a vehicle is stored or erected.

  In the electric storage device for mirrors described in Patent Document 1 below, the ring gear is rotatably supported on the base shaft, and the holder is rotatably supported on the base shaft. Furthermore, the holder is connected to the ring gear, and the rotation of the ring gear relative to the base shaft is restricted by the clutch mechanism, so that the rotation of the holder relative to the base shaft is restricted.

  When the driving force of the electric motor is applied to the ring gear, the holder is rotated with respect to the base shaft. Further, when an external force exceeding a predetermined load is applied to the holder, the rotation limitation of the ring gear with respect to the base shaft by the clutch mechanism is released, and the rotation of the holder with respect to the base shaft is allowed.

  However, in this electric storage device for mirrors, it is understood that the clutch mechanism restricts the rotation of the ring gear relative to the base shaft by engaging the ring gear with the clutch member by the biasing force of the spring. For this reason, the structure which restrict | limits rotation of the ring gear with respect to a base shaft is complicated.

Japanese Patent Laid-Open No. 2002-301986

  In view of the above fact, an object of the present invention is to provide a vehicle mirror device that can limit the rotation of a rotating body with respect to a support with a simple configuration.

  The vehicle mirror device according to claim 1 is provided between a support body connected to the vehicle body side, a rotating body rotatably supported by the support body, and the support body and the rotating body. An urging means for restricting the rotation of the rotating body relative to the support body by an urging force and a rotating mirror supported by the rotating body and a vehicle mirror are provided, and the rotating body rotates relative to the support body. Or a rotating body in which the mirror is stored or erected by being rotated with respect to the rotating body.

  The vehicle mirror device according to claim 2 is the vehicle mirror device according to claim 1, wherein the vehicle mirror device is provided on the rotating body, and the rotating body is rotated with respect to the rotating body by contacting the rotating body. Is provided with a communication member that is restricted.

  In the vehicle mirror device according to the first aspect, the support body is connected to the vehicle body side, the rotating body is rotatably supported by the support body, and the rotating body is rotatably supported by the rotating body. Yes. Furthermore, the mirror of the vehicle is provided on the rotating body, and the mirror is stored or erected by rotating the rotating body relative to the support body or rotating the rotating body relative to the rotating body.

  Here, urging means is provided between the support and the rotating body, and the urging means limits the rotation of the rotating body relative to the support by the urging force. For this reason, it is possible to limit the rotation of the rotating body with respect to the support body with a simple configuration.

  In the vehicle mirror device according to the second aspect, the communication member is provided on the rotating body, and the rotation of the rotating body with respect to the rotating body is restricted by the rotation member being in contact with the communication member.

  Here, as described above, the rotating body is rotatably supported by the support body. For this reason, it is possible to eliminate the need to make the connecting member rotatable with respect to the rotating body.

It is the front view seen from the vehicles back which shows the door mirror device for vehicles concerning the embodiment of the present invention. It is the front view seen from the vehicles back which shows the storing mechanism in the door mirror device for vehicles concerning the embodiment of the present invention. It is sectional drawing seen from the vehicle rear which shows the storage mechanism in the door mirror apparatus for vehicles which concerns on embodiment of this invention. It is sectional drawing (4-4 sectional view taken on the line of FIG. 2) seen from the upper side which shows the storage mechanism in the door mirror apparatus for vehicles which concerns on embodiment of this invention. It is a perspective view which shows the principal part of the storage mechanism in the door mirror apparatus for vehicles which concerns on embodiment of this invention.

  FIG. 1 is a front view of a vehicle door mirror device 10 as a vehicle mirror device according to an embodiment of the present invention as viewed from the rear of the vehicle. In the drawing, the front side of the vehicle is indicated by an arrow FR, the outer side in the vehicle width direction (right side of the vehicle) is indicated by an arrow OUT, and the upper side is indicated by an arrow UP.

  The vehicle door mirror device 10 according to the present embodiment is installed at the middle in the vertical direction of the side door (particularly the front side door) as a vehicle door and at the front end of the vehicle, and is arranged outside the vehicle.

  As shown in FIG. 1, the vehicle door mirror device 10 includes a stay 12 as an installation member that constitutes a support, and the vehicle door mirror is configured by fixing an inner end in the vehicle width direction of the stay 12 to the side door. The device 10 is installed on the side door.

  A storage mechanism 14 (retractor) is supported on the upper side of the outer portion of the stay 12 in the vehicle width direction.

  As shown in FIGS. 2 and 3, the storage mechanism 14 is provided with a stand 16 as a support member constituting the support. A substantially disc-shaped fixing portion 16A is provided at the lower end of the stand 16, and the fixing portion 16A is fixed to the stay 12, so that the stand 16 is fixed to the stay 12 and the storage mechanism 14 is fixed to the stay 12. It is supported by. A cylindrical support cylinder 16B as a support part is integrally provided on the upper side of the fixed part 16A. The support cylinder 16B is disposed so that the axial direction is parallel to the vertical direction and the inside is open in the vertical direction. Has been.

  A substantially cylindrical support shaft 18 as a rotating body is supported in the support cylinder 16B of the stand 16, and the support shaft 18 is coaxially fitted in the support cylinder 16B at the lower end portion, and is axially Are arranged in parallel in the vertical direction and are rotatable about the axis.

  The support shaft 18 is integrally provided with an annular locking portion 18A (see FIG. 5) constituting locking means on the upper side of the support cylinder 16B. The locking portion 18A is formed in the radial direction of the support shaft 18. It protrudes outward. The locking portion 18A is locked to the support cylinder 16B from above, and thereby the downward movement of the support shaft 18 is locked. A substantially annular plate-shaped push nut 20 that constitutes a locking means is attached to the support shaft 18 below the support cylinder 16B, and the push nut 20 is disposed on the radially outer side of the support shaft 18. ing. The push nut 20 is locked to the fixed portion 16 </ b> A of the stand 16 from below, and thereby the upward movement of the support shaft 18 is locked.

  A torsion coil spring 22 (see FIG. 5) as an urging means is coaxially arranged on the outer periphery of the support cylinder 16B of the stand 16, and one end of the torsion coil spring 22 is fixed to the fixing portion 16A of the stand 16. In addition, the other end of the torsion coil spring 22 is fixed to the locking portion 18 </ b> A of the support shaft 18. The torsion coil spring 22 is in a natural state (a state in which it is not elastically deformed in the circumferential direction), restricts the rotation of the support shaft 18 by an urging force, and arranges the rotation position of the support shaft 18 in an upright position. The shaft 18 is rotatable against the urging force of the torsion coil spring 22 in the retracted direction (the direction of arrow A in FIG. 5) and the forward direction (the direction of arrow B in FIG. 5).

  As shown in FIGS. 1 to 4, a storage body 24 constituting a rotating body is rotatably supported on the support shaft 18.

  A container-like case 26 as a housing member is provided at the lower portion of the storage body 24, and the upper surface of the case 26 is open. A support shaft 18 is penetrated and fitted into the inner side of the bottom wall of the case 26 in the vehicle width direction, and the case 26 is rotatably supported by the support shaft 18.

  A substantially plate-like motor base 28 as a holding member is fixed in the upper portion of the case 26, and the motor base 28 is rotatable with respect to the support shaft 18.

  A container-like cover 30 as a covering member is provided on the upper side of the case 26 and the motor base 28, and the lower surface of the cover 30 is open. The lower end of the cover 30 is fitted to the outer periphery of the upper end of the case 26, and the cover 30 covers the upper side of the case 26 and the motor base 28 and is rotatable with respect to the support shaft 18.

  A motor 32 as drive means is assembled to the outer portion of the motor base 28 in the vehicle width direction. A main body 32A of the motor 32 is disposed above the motor base 28 and an output shaft 32B of the motor 32. Is penetrated through the motor base 28 and extends below the motor base 28. The motor 32 is electrically connected to a vehicle control device (not shown), and the output shaft 32B of the motor 32 is rotated by driving the motor 32 under the control of the control device.

  A rotation mechanism 34 (gear mechanism) is provided in the case 26.

  The rotating mechanism 34 is provided with a worm gear 36 as a gear member (first stage gear) on the lower side of the motor 32, and the worm gear 36 is coaxially attached to the output shaft 32 </ b> B of the motor 32. The worm gear 36 and the output shaft 32B are integrally rotatable, and the worm gear 36 is rotated by rotating the output shaft 32B.

  The rotation mechanism 34 is provided with a worm shaft 38 as a connecting gear (intermediate gear) on the inner side in the vehicle width direction of the worm gear 36, and the worm shaft 38 is rotatably supported by the case 26. The worm shaft 38 is provided with a helical gear portion 38A (worm wheel gear) at one side portion (vehicle rear side portion) and a worm gear portion 38B at the other side portion (vehicle front side portion). A worm gear 36 is engaged with the helical gear portion 38A, and when the worm gear 36 is rotated, the worm shaft 38 (helical gear portion 38A and worm gear portion 38B) is rotated.

  A gear plate 40 (worm wheel) as a connecting member (final gear) is coaxially fixed to the support shaft 18 within the case 26, and the gear plate 40 is not rotatable with respect to the support shaft 18 and is vertically movable. It is impossible to move to. The gear plate 40 meshes with (communicates with) the worm gear portion 38B of the worm shaft 38, thereby restricting the rotation of the worm gear portion 38B around the gear plate 40, and the housing 24 with respect to the support shaft 18 is restricted. The rotation is restricted, and the rotation position of the storage body 24 is arranged at the standing position. Further, the rotational force of the worm shaft 38 is applied to the gear plate 40 by rotating the worm shaft 38.

  As shown in FIG. 1, the storage body 24 of the storage mechanism 14 is housed in an inner portion in the vehicle width direction of a substantially rectangular parallelepiped container-like visor 42 as an outer member constituting the rotating body. The side is open. In the visor 42, a substantially rectangular plate-like mirror 44 constituting a rotating body is disposed in the vicinity of the vehicle rear side surface (open portion), and the visor 42 covers the entire circumference of the mirror 44 and the vehicle front side surface. ing. The mirror surface 44 </ b> A of the mirror 44 is directed to the rear side of the vehicle, and the vehicle occupant (particularly the driver) can visually recognize the rear side of the vehicle.

  The visor 42 and the mirror 44 are connected to and supported by the storage body 24, and the visor 42 and the mirror 44 are rotatable together with the storage body 24.

  Next, the operation of this embodiment will be described.

  In the vehicle door mirror device 10 configured as described above, the rotation position of the support shaft 18 and the rotation position of the storage body 24 are arranged in the standing position (use position, return position), so that the visor 42 and the mirror 44 are moved to the side. It protrudes from the door and stands up (deploys).

  In the storage mechanism 14, the output shaft 32 </ b> B of the motor 32 is rotated by driving the motor 32 of the storage body 24 under the control of the control device. Therefore, in the rotation mechanism 34, the worm gear 36 is rotated integrally with the output shaft 32B, and the worm shaft 38 (helical gear portion 38A and worm gear portion 38B) is rotated, so that the worm gear portion 38B is connected to the gear plate 40. The housing 24 is rotated integrally with the worm gear portion 38B by being rotated around.

  When the motor 32 is driven and the output shaft 32B is rotated in one direction with the visor 42 and the mirror 44 raised, the visor 42 and the mirror 44 are integrated with the storage body 24 in the storage direction (the vehicle rear side). And the storage body 24 is rotated to the storage position (rear storage position) so that the visor 42 and the mirror 44 are released from protruding from the side door and stored (rear). Stored).

  When the motor 32 is driven and the output shaft 32B is rotated in the other direction with the visor 42 and the mirror 44 stored, the visor 42 and the mirror 44 are integrated with the storage body 24 in the forward direction (the vehicle front side). And the visor 42 and the mirror 44 are protruded with respect to the side door and are raised (returned) by being rotated to the vehicle width direction outside) and the storage body 24 is rotated to the standing position.

  When an external force greater than a predetermined load on the rear side of the vehicle is applied to the visor 42 or the mirror 44 with the visor 42 and the mirror 44 standing, the support shaft 18 resists the biasing force of the torsion coil spring 22. By rotating in the storage direction, the visor 42 and the mirror 44 are rotated together with the support shaft 18, the gear plate 40, and the storage body 24 in the storage direction (the vehicle rear side and the vehicle width direction inner side) and stored. (After store). When the action of the external force on the visor 42 or the mirror 44 is released, the support shaft 18 is rotated forward by the biasing force of the torsion coil spring 22, so that the visor 42 and the mirror 44 are The support shaft 18, the gear plate 40, and the storage body 24 are integrally rotated with the frontward direction (the vehicle front side and the vehicle width direction outer side) to stand (return).

  On the other hand, the support shaft 18 resists the biasing force of the torsion coil spring 22 when an external force greater than a predetermined load is applied to the visor 42 or the mirror 44 with the visor 42 and the mirror 44 standing upright. By rotating in the forward direction, the visor 42 and the mirror 44 are rotated in the forward direction (the vehicle front side and the vehicle width direction inner side) together with the support shaft 18, the gear plate 40 and the storage body 24. , Forward (stored before). Further, when the action of the external force on the visor 42 or the mirror 44 is released, the support shaft 18 is rotated in the retracted direction by the urging force of the torsion coil spring 22 so that the visor 42 and the mirror 44 are supported. The shaft 18, the gear plate 40, and the storage body 24 are integrally rotated with the storage direction (the vehicle rear side and the vehicle width direction outer side) to stand (return).

  Here, the torsion coil spring 22 spanned between the stand 16 and the support shaft 18 restricts the rotation of the support shaft 18 relative to the stand 16 by the biasing force. For this reason, unlike the clutch mechanism disclosed in Patent Document 1, the rotation of the visor 42 and the support shaft 18 of the mirror 44, the gear plate 40, and the storage body 24 can be restricted with a simple configuration using only the torsion coil spring 22. The mechanism 14 can be miniaturized and the cost can be reduced.

  Moreover, the stand 16 and the storage body 24 are provided with a resistance mechanism for restricting the storage and forward movement by the external force of the visor 42 and the mirror 44 by causing the stand 16 to act on the storage body 24 arranged at the standing position. There is no need to provide it. For this reason, the structure of the stand 16 and the storage body 24 can be simplified, and the storage mechanism 14 can be further reduced in size.

  Furthermore, since the support shaft 18 is rotatably supported by the stand 16, it is possible to eliminate the need for the gear plate 40 to be rotatable with respect to the support shaft 18. In this embodiment, the gear plate 40 is supported with respect to the support shaft 18. 40 is made non-rotatable. For this reason, the structure which installs the gear plate 40 in the support shaft 18 can be simplified.

  Further, in Patent Document 1, in the clutch mechanism, when the ring gear is rotated with respect to the clutch member and the engagement of the ring gear with the clutch member is released, the ring gear moves to the spring side with respect to the clutch member. It is understood that the biasing force of the spring is increased. For this reason, when the ring gear is engaged with the clutch member again, it is necessary to rotate the ring gear relative to the clutch member by the driving force of the electric motor against the increased biasing force of the spring. It is understood that it is necessary to increase the driving force.

  On the other hand, in the present embodiment, there is no need to rotate the gear plate 40 by the driving force of the motor 32 against the increased biasing force of the torsion coil spring 22. For this reason, the driving force of the motor 32 can be reduced, the motor 32 can be miniaturized, and the storage mechanism 14 can be further miniaturized.

  Further, unlike the spring of Patent Document 1, the torsion coil spring 22 has a function of allowing rotation of the gear plate 40 (support shaft 18) when an external force exceeding a predetermined load is applied to the visor 42 or the mirror 44. The function of restricting the rotation of the gear plate 40 when the motor 32 is driven and the visor 42 and the mirror 44 are retracted and raised, and the driving force of the motor 32 against the increased biasing force. It is not necessary to have the function of allowing the rotation of the gear plate 40 due to the above. For this reason, the biasing force of the torsion coil spring 22 can be set easily.

  Further, unlike the ring gear disclosed in Patent Document 1, the gear plate 40 does not need to be movable in the vertical direction with respect to the support shaft 18. Therefore, in this embodiment, the gear plate 40 is moved in the vertical direction on the support shaft 18. It is immovable. For this reason, the structure which installs the gear plate 40 in the support shaft 18 can be simplified further.

  In the present embodiment, the motor 32 is driven, and the visor 42 and the mirror 44 are stored and raised. However, together with or instead of this, the motor 32 may be driven and the visor 42 and the mirror 44 may be moved forward and upright.

  In the present embodiment, the vehicle mirror device of the present invention is applied to the vehicle door mirror device 10. However, the vehicle mirror device of the present invention may be applied to another vehicle outer mirror device (for example, a vehicle fender mirror device) outside the vehicle or a vehicle inner mirror device inside the vehicle.

10. Vehicle door mirror device (vehicle mirror device)
12 Stay (support)
16 Stand (support)
18 Support shaft (rotating body)
22 Torsion coil spring (biasing means)
24 Containment body (rotating body)
40 Gear plate (contact member)
42 Visor (rotating body)
44 Mirror (rotating body)

Claims (2)

A support body connected to the vehicle body side,
A rotating body rotatably supported by the support;
An urging means provided between the support and the rotating body and restricting the rotation of the rotating body with respect to the support by an urging force;
The rotating body is rotatably supported, and a vehicle mirror is provided. The rotating body is rotated with respect to the supporting body or rotated with respect to the rotating body so that the mirror is stored or erected. A rotating body,
Mirror device for vehicles provided with.   The vehicle mirror device according to claim 1, further comprising: a connecting member that is provided on the rotating body and that restricts the rotation of the rotating body relative to the rotating body by contacting the rotating body.

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