JP7403292B2 - Surrounding visibility device for electric retractable vehicles - Google Patents

Description

The present invention relates to an electric retractable vehicle peripheral visibility device.

As an electric retractable vehicle peripheral visibility device, there is one shown in Patent Document 1, for example. The electric retractable vehicle peripheral visibility device of Patent Document 1 includes a base, a shaft, and a visibility assembly. The viewing assembly includes a housing, a viewing unit, and a powered storage unit. The electric storage unit includes a casing, a motor, a speed reduction mechanism, a clutch mechanism, and a rotational force transmission mechanism. The motor, the speed reduction mechanism, the clutch mechanism, and the rotational force transmission mechanism are arranged in a direction intersecting the axial direction of the shaft.

As a result, the electric retractable vehicle peripheral visibility device of Patent Document 1 can reduce the axial dimension (vertical dimension) of the shaft of the visibility assembly, thereby improving the aerodynamic performance of the vehicle (automobile). It is possible to realize weight reduction and improve fuel efficiency due to air resistance.

JP2019-26161A

In such an electric retractable vehicle peripheral viewing device, when the viewing assembly is electrically rotated, the fact that the viewing assembly is tilted with respect to the shaft is not a problem in terms of function, but it is undesirable in terms of appearance. For this reason, in such an electrically retractable vehicle peripheral viewing device, it is preferable in terms of appearance to reduce the inclination of the viewing assembly with respect to the shaft when the viewing assembly is electrically rotated.

The problem to be solved by the present invention is to provide an electrically retractable vehicle peripheral visual recognition device that can reduce the inclination of the visual recognition assembly with respect to the shaft when the visual recognition assembly is electrically rotated.

The surrounding visibility device for an electric retractable vehicle of the present invention includes a base fixed to a vehicle body, a shaft fixed to the base, and a visibility assembly rotatably attached to the shaft. A peripheral viewing device, wherein the viewing assembly has a housing and a motorized storage unit, the motorized storage unit electrically rotating the shaft, the casing, and the viewing assembly between a use position and a rearward storage position. A stopper mechanism is provided between the casing and a portion of the electric rotating device, and the stopper mechanism is interposed between the casing and a portion of the electric rotating device, and the stopper mechanism is interposed between the casing and a portion of the electric rotating device. and a tilt-reducing member that applies a load to the shaft via the tilt-reducing member to alleviate the tilt of the visual recognition assembly.

In the electric retractable vehicle peripheral visibility device of the present invention, the shaft includes a shaft portion on which the casing is rotatably mounted via an electric rotating device, a mounting portion on which the casing is rotatably placed; The electric rotating device includes a motor, a speed reduction mechanism, a clutch mechanism, and a rotational force transmission mechanism, and a stopper mechanism is attached to a shaft portion and is rotatable in a circumferential direction of the shaft portion. a stopper member mounted on the casing so as to be movable in the axial direction of the shaft, and mounted on the casing so as to be unrotatable in the circumferential direction of the shaft and movable in the axial direction of the shaft; the stopper member and the mounting portion; stopper portions that contact each other when the visual recognition assembly rotates from the rear storage position is in the use position, and a load is applied to the stopper member to maintain the state in which the stopper portions are in contact with each other. and a coil spring for stopping the visibility assembly in the use position, wherein the load of the coil spring is greater than the electric force in the direction of rotating the visibility assembly in the use position from the outside toward the front of the vehicle. Preferably, the load is such that when a force is applied, the mutual contact between the stopper parts is released.

In the electric retractable vehicle surrounding visibility device of the present invention, the rotational force transmission mechanism is attached to the shaft portion so as to be rotatable in the circumferential direction of the shaft portion and movable in the axial direction of the shaft portion, a first lift member to which force is transmitted via a speed reduction mechanism and a clutch mechanism; and a second lift attached to the shaft so as to be non-rotatable in the circumferential direction of the shaft and movable in the axial direction of the shaft. member, the first lift member, and the second lift member, respectively, and which is electrically rotated from the rear storage position by the rotational force of the motor transmitted to the first lift member when the viewing assembly is in the use position. , and a fitting slope that narrows the axial clearance of the shaft and the circumferential clearance of the shaft.

In the electric retractable vehicle surrounding visibility device of the present invention, the second lift member to which the coil spring load is applied and the first lift member to which the coil spring load is not applied are arranged in the radial direction of the shaft portion. Preferably, they are arranged in parallel.

In the electric retractable vehicle surrounding visibility device of the present invention, the clutch mechanism includes a clutch shaft whose center line is parallel to the shaft portion and which is rotatably attached to the casing about the center line; The clutch spring attached to the clutch shaft is connected to the clutch spring attached to the clutch shaft, and is normally in a connected state due to the spring force of the clutch spring, but when a force greater than the spring force of the clutch spring is applied to the visibility assembly, the clutch spring It is preferable to have a first clutch and a second clutch that are in a disengaged state against a spring force.

In the electric retractable vehicle peripheral visibility device of the present invention, the inclination mitigating member may be a wave washer that is interposed between the casing and the rotational force transmission mechanism and has an elastic force in the axial direction of the shaft portion. preferable.

In the electrically retractable vehicle surroundings visual recognition device of the present invention, it is preferable that the visual recognition unit is an imaging device that images the surroundings of the vehicle.

The electrically retractable vehicle peripheral visibility device of the present invention preferably includes a display device that is installed inside the vehicle and displays an image of the vehicle surroundings captured by an imaging device.

The electrically retractable vehicle peripheral visual recognition device of the present invention can reduce the inclination of the visual recognition assembly with respect to the shaft when the visual recognition assembly is electrically rotated.

FIG. 1 is a plan view showing an embodiment of an electric retractable vehicle peripheral visibility device according to the present invention in a state of use. FIG. 2 is a functional block diagram showing the overall configuration of the electric retractable vehicle peripheral visibility device. FIG. 3 is a plan view showing the usage position, the rear storage position, and the front storage position (front tilting position) of the left side electrically retractable vehicle peripheral viewing device visual recognition assembly installed on the left side door of the vehicle. FIG. 4 is a perspective view of the viewing assembly, base, etc. FIG. 5 is a perspective view showing an electric retractable unit of an electric retractable vehicle peripheral visibility device. FIG. 6 is an exploded perspective view showing the components of the electric storage unit. FIG. 7 is a perspective view showing a shaft, an electric rotation device (a motor, a reduction mechanism, a clutch mechanism, and a rotational force transmission mechanism) and a stopper mechanism, which are the main parts of the electric storage unit. FIG. 8 is a partial cross-sectional view showing a part of the casing of the electric storage unit, a clutch mechanism, and a part of the rotational force transmission mechanism. FIG. 9 is a partial cross-sectional view showing the shaft of the electric storage unit, a part of the casing, a part of the clutch mechanism, the rotational force transmission mechanism, the stopper mechanism, and the tilt mitigation member. FIG. 10 is a longitudinal cross-sectional view (corresponding to FIG. 9) showing the shaft of the electric storage unit, a part of the casing, a part of the clutch mechanism, the rotational force transmission mechanism, the stopper mechanism, and the tilt mitigation member. FIG. 11 is a plan view of the shaft of the electric storage unit. FIG. 12 is an explanatory diagram showing a part of the lower casing (gear case) of the electric storage unit. FIG. 12(A) is a partial plan view. FIG. 12(B) is a partial bottom view. FIG. 13 is an explanatory diagram showing a stopper member of the stopper mechanism of the electric storage unit. FIG. 13(A) is a plan view (view from arrow A in FIG. 13(B)). FIG. 13(B) is a front view. FIG. 13(C) is a bottom view (view along arrow C in FIG. 13(B)). FIG. 13(D) is a right side view (view from arrow D in FIG. 13(B)). 14(A), (B), (C), (D), (E), and (F) are explanatory diagrams showing the action of the clutch mechanism of the electric storage unit. FIGS. 15A and 15B are explanatory diagrams showing the operation of the rotational force transmission mechanism of the electric storage unit. FIG. 16 is a partially planar explanatory view when the visual recognition assembly is located in the use position, and is a partially planar explanatory view showing the shaft of the electric storage unit, the gear case, the stopper member, and the rotation angle regulating mechanism. FIG. 17 is an explanatory partial plan view when the visual recognition assembly is located at the rear storage position, and is a partial plan explanatory view showing the shaft of the electric storage unit, the gear case, the stopper member, and the rotation angle regulating mechanism. FIG. 18 is a partial plan view showing the shaft of the electric storage unit, the gear case, the stopper member, and the rotation angle regulating mechanism when the visibility assembly is located in the forward storage position (forward tilted position). It is a diagram. FIG. 19 is a partial plan view showing the action of the stopper mechanism of the electric storage unit. 20(A), (B), (C), (D), and (E) are developed explanatory diagrams (XX-XX line developed explanatory diagrams in FIG. 19) showing the action of the stopper mechanism of the electric storage unit. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment (example) of an electric retractable vehicle peripheral visibility device according to the present invention will be described in detail below with reference to the drawings. In this specification and the appended claims, front, rear, top, bottom, left, and right refer to the front, rear, top, Bottom, left, right.

Note that since the drawings are schematic diagrams, main parts are shown, parts other than the main parts are not shown, and some hatching is omitted. Furthermore, FIGS. 5 and 7 are perspective views seen from the rear side of the vehicle. On the other hand, FIG. 6 is an exploded perspective view of the vehicle as seen from the front side. Therefore, the arrangement of the components of the electric storage unit 6 shown in FIGS. 5 and 7 and the arrangement of the components of the electric storage unit 6 shown in FIG. 6 are rotated by 180 degrees.

(Description of configuration of embodiment)
The configuration of the electric retractable vehicle peripheral visibility device according to this embodiment will be described below. In the figure, reference numeral 1 denotes an electric retractable vehicle peripheral visual recognition device (hereinafter simply referred to as a "visual recognition device") according to this embodiment.

(Description of electric retractable vehicle peripheral visibility device 1)
As shown in FIG. 1, the visual recognition device 1 is installed on the left and right doors (vehicle body) D of a vehicle (automobile) V, respectively. The visual recognition device 1 is a replacement for a vehicle rear view mirror, for example, an outside mirror device (not shown) such as a door mirror device installed on the left and right doors D of the vehicle V.

The visual recognition device 1 installed on the left door D of the vehicle V will be described below. Note that the visual recognition device 1 installed on the right door D of the vehicle V has almost the same configuration as the visual recognition device 1 installed on the left door D of the vehicle V, so a description thereof will be omitted. .

As shown in FIGS. 1 to 5, the viewing device 1 includes a base 2, a shaft 3, a viewing assembly 4, and display devices (monitors) 5M, 5ML, and 5MR. The base 2, shaft 3, and visual recognition assembly 4 are installed on the door D, and the display devices 5M, 5ML, and 5MR are installed inside the vehicle V (inside the vehicle).

That is, the left display device 5ML is installed near the left viewing assembly 4. The right display device 5ML is installed near the right viewing assembly 4. The central display device 5M is installed near the driver's seat.

In FIG. 3, reference numeral A indicates the use position of the viewing assembly 4. Reference numeral B is the rear storage position of the viewing assembly 4. Reference numeral C indicates a forward storage position (or forward tilted position; hereinafter referred to as "front storage position") of the viewing assembly 4. The symbol E is the rear of the vehicle V. Symbol F is the front of the vehicle V. The symbol O is the center line of rotation of the viewing assembly 4, and is also the center line of the axial portion 30 of the shaft 3, as well as the center line of rotation.

Similarly, in FIG. 3, the symbol θB is the rotation angle at which the visual recognition assembly 4 rotates from the use position A toward the rear storage position B until it is stored in the rear storage position B, that is, the rear storage rotation angle. The rear storage rotation angle θB is also the angle at which the visual recognition assembly 4 rotates electrically between the use position A and the rear storage position B, that is, the electrical rotation angle. The rear storage rotation angle θB is approximately 60° in this example.

Similarly, in FIG. 3, the symbol θC is the rotation angle at which the visual recognition assembly 4 rotates from the use position A toward the front storage position C until it is stored in the front storage position C, that is, the front storage rotation angle. The front storage rotation angle θC is approximately 80° in this example.

The rear storage rotation angle θB and the front storage rotation angle θC are respectively regulated and set by a rotation angle regulation mechanism described later.

When the later-described viewing unit 5 of the viewing assembly 4 is a camera, the rear storage rotation angle θB and the front storage rotation angle θC are the same angle in the left viewing device 1 and the right viewing device 1. On the other hand, when the visual recognition unit 5 is a mirror, the angle of the left visual recognition device 1 and the angle of the right visual recognition device 1 are different.

(Base 2 explanation)
The base 2 includes a base member and a cover member that covers the base member. As shown in FIGS. 1, 3, and 4, the base 2 includes a first fixing part 21 in the shape of a vertical plate and a second fixing part 22 in the shape of a horizontal plate. The interior of the base 2 communicates with the interior of the vehicle V through an opening (not shown) provided in the vehicle body panel of the door D or the door panel.

The first fixing part 21 is fixed to the door D with a screw or the like (not shown). As a result, the base 2 is fixed to the door D, that is, to the vehicle body. The shaft 3 is fixed to the second fixing part 22 with a screw or the like. Note that a fixing portion 32 of the shaft 3 is fixed to the second fixing portion 22 .

(Description of shaft 3)
As shown in FIGS. 5, 6, 7, 10, 11, 19, and 20, the shaft 3 includes a hollow cylindrical shaft portion 30 and a disk-shaped disk as a mounting portion. 31, and a fixing part 32 in the shape of a rectangular plate. A lower end portion of the shaft portion 30 is integrally provided in the center portion of the upper surface of the disk portion 31 . A fixing part 32 is integrally provided on the lower surface of the disc part 31.

The center line of the shaft portion 30 , that is, the rotation center line O passes through the center of the disk portion 31 . A part (square plate part) of the fixing part 32 protrudes toward the door D side with respect to the shaft part 30 and the disc part 31. The disk portion 31 and the fixing portion 32 are provided with a circular or arbitrary-shaped through hole that communicates with the hollow portion of the shaft portion 30 .

An engaging portion 33 is provided on the outer circumferential surface of the shaft portion 30 from the upper end to the middle portion. A circular locking groove 34 is provided on the outer peripheral surface of the upper end portion of the shaft portion 30 .

The fixing part 32 is fixed to the second fixing part 22 of the base 2 with a screw or the like. As a result, the shaft 3 is fixed to the base 2.

As shown in FIGS. 10 and 11, on the upper surface of the disc portion 31, the central portion 310 is slightly recessed below the circumferential edge portion 311. The central portion 310 of the upper surface of this recessed disk portion 31 forms a mounting surface 310 (hereinafter referred to as "placing surface 310").

On the shaft portion 30 side of the mounting surface 310, a fixed-side stopper convex portion 35 serving as a stopper portion of a stopper mechanism 9S, which will be described later, is integrally provided to protrude upward. As shown in FIG. 11, the fixed side stopper convex portion 35 extends in the circumferential direction or circumferential direction around the rotation center line O (hereinafter referred to as "the circumferential direction of the rotation center line O") when viewed from above. , are provided in an arc shape at equal intervals.

One circumferential end surface 36 of the stationary stopper convex portion 35 forms an inclined surface such that the width of the stationary stopper convex portion 35 in the circumferential direction becomes narrower from the lower side to the upper side. This one end surface 36 is a counterclockwise end surface of the stationary stopper convex portion 35 when viewed from above. This one end surface 36 will be hereinafter referred to as a "fixed side stopper contact surface 36."

In this example, two fixed-side stopper protrusions 35 are provided, but the number of fixed-side stopper protrusions 35 is not particularly limited. In other words, the number of fixed side stopper protrusions 35 may be one or three or more.

Further, on the fixed portion 32 side of the circumferential edge portion 311 on the upper surface of the disc portion 31, a fixed side rotation angle regulating convex portion 37 of the rotation angle regulating mechanism is integrally provided upwardly projecting. As shown in FIG. 11, the fixed side rotation angle regulating convex portion 37 is provided in an arc shape in the circumferential direction of the rotation center line O when viewed from above.

Both end surfaces 38 and 39 on the circumferential side of the fixed side rotation angle regulating convex portion 37 form substantially vertical surfaces. This one end surface 38 is a clockwise end surface of the fixed side rotation angle regulating convex portion 37 when viewed from above. This one end surface 38 is hereinafter referred to as "first fixed-side rotation angle regulating contact surface 38." The other end surface 39 is a counterclockwise end surface of the fixed rotation angle regulating convex portion 37 when viewed from above. This other end surface 39 is hereinafter referred to as a "second fixed-side rotation angle regulating contact surface 39."

(Description of visual recognition assembly 4)
The viewing assembly 4 is rotatably attached to a shaft portion 30 (hereinafter referred to as “shaft portion 30”) of the shaft 3, as shown in FIGS. 1, 3, and 4. The viewing assembly 4 includes a housing 4H, a viewing unit 5, and a motorized storage unit 6.

(Description of housing 4H)
As shown in FIGS. 3 and 4, the housing 4H has a hollow box shape. In this example, the housing 4H is configured into two halves, upper and lower, which are watertightly attached to each other by fitting, adhesion, welding, or the like. A circular through hole 40 is provided on the rear surface of the end of the housing 4H opposite to the shaft 3.

A part of the visual recognition unit 5 and the electric storage unit 6 are housed in the housing 4H. That is, the fixing part 32 of the shaft 3 of the electric storage unit 6 is located outside the housing 4H and is fixed to the second fixing part 22 of the base 2. Therefore, most of the electric storage unit 6 except for the fixing part 32 of the shaft 3 is accommodated in the housing 4H. Note that a camera (not shown) separate from the visual recognition unit 5 may be housed in the housing 4H. This camera is a camera that visually checks the downward direction.

(Description of visual recognition unit 5)
In this example, the visual recognition unit 5 is an imaging device (camera) that captures information around the vehicle V as an image. The visual recognition unit 5 includes a main body, a lens 51, and a harness 52, as shown in FIGS. 2 and 4. The visual recognition unit 5 is housed in the housing 4H and is equipped on the housing 4H.

The main body is fixed to the housing 4H with screws or the like. The lens 51 faces the through hole 40 of the housing 4H. Harness 52 is connected to the main body. The harness 52 is wired inside the vehicle V from inside the housing 4H, passing through the inside of the shaft 3 and the inside of the base 2. The harness 52 is provided with a connector that electrically connects to the electric storage unit 6.

In order to use the visibility unit 5 to image a field of view that is equal to or wider than the side and rear field of view of the vehicle V of an existing outside mirror device (not shown), the vision unit 5 must be projected outward from the door D. You need to position it. Therefore, when the viewing assembly 4 is located in the use position A, the housing 4H, which houses the viewing unit 5 therein, protrudes outward from the door D. Note that the amount of protrusion of the housing 4H is smaller than the amount of protrusion of an existing outside mirror device.

The visual recognition unit 5 is connected to an image processing device (image processing ECU) 54 via a harness 52, as shown in FIG. The image processing device 54 is connected to the detection device 57 and the display devices 5M, 5ML, and 5MR via signal lines 55 and 56, respectively.

The visual recognition unit 5 serving as an imaging device captures information on the rear and sides of the vehicle V in the vicinity of the vehicle V, and uses the harness 52 to capture images of information on the rear and sides of the vehicle V. The image is output to the image processing device 54 via the image processing device.

The detection device 57 is equipped on the vehicle V. The detection device 57 is connected to the image processing device 54 via a signal line 55. The detection device 57 detects vehicle information and outputs the detected vehicle information as a detection signal to the image processing device 54 via the signal line 55. The detection device 57 includes, for example, a steering angle detection section (steering angle sensor), a gear position detection section (gear position sensor), a direction indication detection section (direction indication sensor), a vehicle speed detection section (vehicle speed sensor), and a vehicle position detection section. (vehicle position sensor), ultrasonic detection section (ultrasonic sensor), other detection sections, etc. are used singly or in combination.

The image processing device 54 is installed in the vehicle V. The image processing device 54 is connected to the visual recognition unit 5, the detection device 57, and the display devices 5M, 5ML, and 5MR via the harness 52 and signal lines 55 and 56, respectively. The image processing device 54 appropriately processes images of rear and side information of the vehicle V captured by the visual recognition unit 5 based on vehicle information from the detection device 57. Note that the image processing device 54 may process images of information on the rear and sides of the vehicle V captured by the visual recognition unit 5, not based on the vehicle information of the detection device 57, but based on manual operation by the driver. The image processing device 54 outputs the processed images to the display devices 5M, 5ML, and 5MR.

The display devices 5M, 5ML, and 5MR are installed within the driver's field of view inside the vehicle V (inside the vehicle). The display device 5M is connected to the image processing device 54 via a signal line 56. The display devices 5M, 5ML, and 5MR display images processed by the image processing device 54. The driver can visually check the rear and sides of the vehicle V by viewing the images displayed on the display devices 5M, 5ML, and 5MR. That is, the driver can check the rear visibility of the vehicle V.

(Description of electric storage unit 6)
As shown in FIGS. 5 to 20, the electric storage unit 6 is partially housed in the housing 4H. The electric storage unit 6 electrically rotates the visual recognition assembly 4 between the use position A and the rear storage position B. The electric storage unit 6 includes the shaft 3, casings 6U and 6D, and an intervening structure.

The casings 6U and 6D are rotatably attached to the shaft 3 and fixed to the housing 4H.

The intervening structure is interposed between the fixed shaft 3 and the rotating casings 6U and 6D. The intervening structure includes an electric rotating device, a stopper mechanism 9S, a holding member (plate, holding plate) 7H, and a wave washer 900 as a tilt alleviation member.

The electric rotating device includes a motor 7M, a speed reduction mechanism 7, a clutch mechanism 8, and a rotational force transmission mechanism 9. The motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9 of this electric rotating device move the visual recognition assembly 4 between the use position A and the rear storage position B via the casings 6U, 6D and the housing 4H. Rotate electrically.

The shaft portion 30, the electric rotating device (motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9), and the holding member 7H are housed in the casings 6U and 6D. The motor 7M, the deceleration mechanism 7, the holding member 7H, and the clutch mechanism 8 are arranged in a direction intersecting (orthogonal or substantially orthogonal to) the axial direction of the shaft portion 30. Further, the axial direction of the drive shaft (output shaft, rotating shaft) of the motor 7M and the axial direction of the shaft portion 30 intersect with each other (orthogonal or substantially orthogonal). Here, the axial direction of the shaft portion 30 is the rotation center line O direction.

As shown in FIGS. 6 and 7, the clutch mechanism 8 is arranged between the rotational force transmission mechanism 9 and the motor 7M. The arrangement direction of the rotational force transmission mechanism 9, the clutch mechanism 8, and the motor 7M and the axial direction of the drive shaft of the motor 7M intersect (orthogonal or substantially orthogonal). As a result, the amount of protrusion of the casings 6U, 6D, that is, the visual recognition assembly 4 (the dimension in the left-right direction in FIG. 1) is smaller than the amount of protrusion of the existing outside mirror device. Note that the arrangement direction is a direction that connects the rotation center line O and an axial center line O1 described later.

(Description of motor 7M)
The motor 7M is held by a holding member 7H. The motor 7M is attached to the casings 6U, 6D via the holding member 7H, and is housed within the casings 6U, 6D.

As shown in FIGS. 6 and 7, the motor 7M is provided with a switch circuit board 70M. The switch circuit board 70M is provided with a terminal. The terminal is arranged in the connector section of the lower casing 6D. By removably fitting the connector of the harness 52 into the connector part of the lower casing 6D and electrically connecting it to the terminal, the motor 7M is supplied with power via the harness 52, the connector, the terminal, and the switch circuit board 70M. Ru.

The motor 7M includes a drive shaft, a main body, a cylinder, and an end cap. That is, a cylindrical portion is provided on one surface of the main body portion. A drive shaft rotatably protrudes from the cylindrical portion. An end cap portion is provided on the other surface opposite to one surface of the main body portion.

(Description of deceleration mechanism 7)
The deceleration mechanism 7 is held by a holding member 7H together with a motor 7M. The speed reduction mechanism 7 is attached to the casings 6U, 6D together with the motor 7M via the holding member 7H, and is housed within the casings 6U, 6D.

As shown in FIGS. 6 and 7, the speed reduction mechanism 7 includes a first worm gear 71, a second worm gear 72, and an intermediate helical gear 73.

The first worm gear 71 is attached to the drive shaft M of the motor 7M. A helical gear 73 is fixed to the shaft portion of the second worm gear 72. As a result, the helical gear 73 and the second worm gear 72 rotate simultaneously on the same axis. The helical gear 73 meshes with the first worm gear 71.

(Description of clutch mechanism 8)
As shown in FIG. 8, the clutch mechanism 8 is attached to the casings 6U and 6D, and is housed within the casings 6U and 6D. As shown in FIG. 6, the clutch mechanism 8 includes a clutch shaft 80, a first clutch gear 81, a second clutch gear 82, a clutch 86, a washer 83, a coiled clutch spring 84, and a C ring 85. and has.

Note that the second clutch gear 82 and clutch 86 in this example are each configured separately. The second clutch gear 82 and the clutch 86 are non-rotatably fitted to each other. However, the second clutch gear 82 and the clutch 86 may be integrated.

Clutch shaft 80 is attached to shaft 69 of lower casing 6D. A center line (hereinafter referred to as an "axial center line") O1 of the clutch shaft 80 is parallel or substantially parallel to the shaft 3, that is, the rotation center line O.

A clutch spring 84, a first clutch gear 81, a clutch 86, a second clutch gear 82, a washer 83, and a C ring 85 are fitted into the clutch shaft 80 from the outside in this order from bottom to top. Thereby, the clutch mechanism 8 is configured as one complete unit from the lower end flange portion of the clutch shaft 80 to the C ring 85 at the upper end of the clutch shaft 80. The second worm gear 72 is engaged with the second clutch gear 82 .

As shown in FIGS. 8 and 14, a plurality of notch recesses 87 (three in this example) are formed on the upper surface of the first clutch gear 81 in the circumferential direction or circumferential direction (hereinafter referred to as They are provided at equal or substantially equal intervals in the "circumferential direction of the axis O1"). On the lower surface of the clutch 86, a plurality of notch convex portions 88, three in this example, are provided at equal or approximately equal intervals in the circumferential direction of the axis O1, and in contact with the three notch concave portions 87 of the first clutch gear 81. It is set up accordingly. Note that the first clutch gear 81 may be provided with a notch protrusion 88 and the clutch 86 may be provided with a notch recess 87. Further, when the second clutch gear 82 and the clutch 86 as the second clutch are integrated, the second clutch gear 82 is provided with a notch convex portion 88 or a notch concave portion 87. Furthermore, the number of notch recesses 87 and notch protrusions 88 may be other than three in this example.

The notch concave portion 87 of the first clutch gear 81 and the notch convex portion 88 of the clutch 86 are normally fitted together by the spring force of the clutch spring 84 and are in a connected state, and are not disengaged by the rotational force of the motor 7M. The rotational force of the motor 7M is transmitted to the rotational force transmission mechanism 9 via the deceleration mechanism 7. Furthermore, when an external force greater than the spring force of the clutch spring 84 is applied to the casings 6U, 6D, that is, the visual recognition assembly 4, the notch concave portion 87 of the first clutch gear 81 and the notch convex portion 88 of the clutch 86 , the fitted state is disengaged against the spring force of the clutch spring 84, resulting in a disconnected state, and the above-mentioned force (that is, an external force greater than the spring force of the clutch spring 84) is transmitted to the speed reduction mechanism 7. First, the casings 6U and 6D, that is, the visual recognition assembly 4 are rotated.

Note that the entire clutch mechanism 8 in this example is housed within the casings 6U and 6D. However, a part of the clutch mechanism 8, for example, a part of the clutch shaft 80 and the clutch spring 84, may be arranged outside the casings 6U and 6D.

(Description of rotational force transmission mechanism 9)
The rotational force transmission mechanism 9 is attached to the shaft 3 and housed in the casings 6U and 6D, as shown in FIGS. 6, 9, and 10. The rotational force transmission mechanism 9 uses the stall torque of the motor 7M to stop backlash in the axial direction (vertical direction) of the shaft portion 30 and backlash in the circumferential direction (rotational direction) of the shaft portion 30.

Further, the rotational force transmission mechanism 9 transmits the rotational force of the motor 7M to the casings 6U and 6D via the deceleration mechanism 7 and the clutch mechanism 8, and moves the visual recognition assembly 4 between the use position A and the rear storage position B. It is something that is rotated.

The rotational force transmission mechanism 9 includes a lift gear 91 as a first lift member, a lift holder 92 as a second lift member, and a C ring 93. The lift gear 91, lift holder 92, and C ring 93 are fitted into the shaft portion 30 in this order from below. A first clutch gear 81 of the clutch mechanism 8 is engaged with the lift gear 91 .

A circular through hole is provided in the center of the lift gear 91. On the other hand, the lift holder 92 is composed of an upper large-diameter portion and a lower small-diameter portion. A substantially octagonal (serration or spline may also be used) through hole (engaging hole) is provided in the center of the large diameter portion. A circular hole is provided in the center of the small diameter portion. The inner diameter of the circular through hole is larger than the inner diameter of the octagonal through hole.

The large diameter portion of the lift holder 92 is fitted into the engaging portion 33 of the shaft portion 30 so as to be unrotatable in the circumferential direction of the rotation center line O and movable in the direction of the rotation center line O. . The small diameter portion of the lift holder 92 constitutes a shaft portion. A lift gear 91 is fitted into the small diameter portion of the lift holder 92 so as to be rotatable in the circumferential direction of the rotation center line O and movable in the direction of the rotation center line O.

In this way, the lift gear 91 and the lift holder 92 are arranged in parallel in the radial direction of the shaft portion 30. The load of a coil spring 93S of a stopper mechanism 9S, which will be described later, is applied to the lift holder 92. On the other hand, the load of the coil spring 93S of the stopper mechanism 9S is not acting on the lift gear 91.

The C ring 93 is fitted into the locking groove 34 of the shaft portion 30 on the lift holder 92 . Lift gear 91, lift holder 92, and C ring 93 are housed in casings 6U and 6D.

On the upper surface of the lift gear 91, a plurality of rattling protrusions (notch protrusions) 94 as rattle preventing parts are provided at equal or approximately equal intervals in the circumferential direction of the rotation center line O. There is. On the lower surface of the lift holder 92, a plurality of rattle preventing recesses (notch recesses) 95, which serve as rattle preventing parts (five in this example), are arranged at equal or almost equal intervals in the circumferential direction of the rotation center line O, and are arranged to hold the lift gear 91 at equal or almost equal intervals. It is provided corresponding to the five looseness preventing protrusions 94. Note that the number of the anti-backlash protrusions 94 and the anti-backlash recesses 95 may be other than five in this example.

As shown in FIG. 15, fitting slopes 96 are provided on both circumferential end surfaces (both side surfaces) of the anti-backlash convex portion 94, and the fitting slopes 96 are inclined so that the width increases from the upper side to the lower side. ing. On the other hand, fitting slopes 97 are provided on both circumferential end surfaces (both side surfaces) of the anti-backlash recess 95, respectively, and the fitting slopes 97 are inclined so that the width increases from the upper side to the lower side.

The fitting slope 96 of the anti-backlash protrusion 94 and the fitting slope 97 of the anti-backlash recess 95 are arranged in the axial direction (rotation center line) of the shaft 30 when the visual recognition assembly 4 is located in the use position A or the rear storage position B. The clearance in the direction of O) and the clearance in the circumferential direction of the shaft portion 30 are reduced to eliminate fitting play.

That is, when the visibility assembly 4 is located in the use position A or the rear storage position B, the stall torque of the motor 7M applied to the lift gear 91 acts on the fitting slopes 96 and 97, so that the axial direction at the fitting slopes 96 and 97 is The clearance and the clearance in the circumferential direction are reduced, and the fitting slopes 96 and 97 are in a state where there is no fitting play.

In this example, when the visual recognition assembly 4 is located in the use position A or the rear storage position B, there is no fitting play between the fitting slopes 96 and 97. Note that the fitting play between the fitting slopes 96 and 97 may be eliminated only when the visual recognition assembly 4 is located at the use position A.

(Description of stopper mechanism 9S)
As shown in FIGS. 6, 10, 13, 19, and 20, the stopper mechanism 9S includes a stopper member 90S, a rotating side stopper convex portion 91S as a stopper portion, and the fixed side stopper convex portion 35, It has a guide protrusion 92S, the guide recess 64, a coil spring 93S, and a washer 94S.

The stopper mechanism 9S is housed within the casings 6U and 6D. As shown in FIG. 10, the stopper member 90S, washer 94S, and coil spring 93S of the stopper mechanism 9S are fitted to the shaft portion 30 in order from bottom to top, and rotate with the disk portion 31 of the shaft 3. It is interposed between the force transmission mechanism 9 and the lift holder 92 . Thereby, the load of the coil spring 93S is acting on the lift holder 92.

Further, the stopper member 90S is attached to the lower casing 6D. The stopper mechanism 9S is a so-called set positioning mechanism that stops the rotating visual recognition assembly 4 from the rear storage position B at the use position A.

As shown in FIG. 13, the stopper member 90S has a circular through hole in the center and has a plate-like annular shape. The stopper member 90S is attached to the shaft portion 30 so as to be rotatable in the circumferential direction of the shaft portion 30 and movable in the axial direction of the shaft portion 30. Further, the stopper member 90S is mounted on the casing 6D so as to be non-rotatable in the circumferential direction of the shaft portion 30 and movable in the axial direction of the shaft portion 30.

On the lower surface of the stopper member 90S, a rotation-side stopper convex portion 91S is integrally provided to protrude downward. As shown in FIG. 13(C), the rotation side stopper convex portions 91S are provided in two arcuate shapes at equal intervals when viewed from below. The center of the stopper member 90S is located on the rotation center line O. As a result, the rotation-side stopper convex portion 91S is provided in an arc shape in the circumferential direction of the rotation center line O, similarly to the stationary-side stopper convex portion 35.

One end surface 95S on the circumferential side of the rotation-side stopper projection 91S forms an inclined surface such that the circumferential width of the rotation-side stopper projection 91S becomes narrower from the upper side to the lower side. This one end surface 95S is a counterclockwise end surface of the rotation-side stopper convex portion 91S when viewed from below. This one end surface 95S will be hereinafter referred to as a "rotation-side stopper contact surface 95S."

The rotating side stopper convex portion 91S constitutes a stopper portion of the stopper mechanism 9S together with the stationary side stopper convex portion 35 of the shaft 3. The stopper parts 35 and 91S of the stopper mechanism 9S abut each other and stop the stopper member 90S rotating from the rear storage position B at the use position A. That is, when the visual recognition assembly 4 rotating from the rear storage position B is located at the use position A, the rotation side stopper contact surface 95S of the rotation side stopper convex part 91S and the fixed side stopper contact surface 36 of the fixed side stopper convex part 35 are in contact with each other.

A guide protrusion 92S is integrally provided at an intermediate portion of the outer peripheral surface of the two rotation-side stopper protrusions 91S. The two guide protrusions 92S are located below the lower surface of the stopper member 90S and outside the outer peripheral surface of the stopper member 90S.

The two guide convex portions 92S are fitted into the guide recess 64 of the lower casing 6D so as to be non-rotatable in the circumferential direction of the shaft portion 30 and movable in the axial direction of the shaft portion 30. Thereby, the stopper member 90S is attached to the casing 6D so as to be non-rotatable in the circumferential direction of the shaft portion 30 and movable in the axial direction of the shaft portion 30.

In this example, two rotation-side stopper projections 91S and two guide projections 92S are provided, but the number of rotation-side stopper projections 91S and guide projections 92S is not particularly limited. That is, the number of the rotation side stopper convex portion 91S and the guide convex portion 92S may be one or three or more. Moreover, although the rotation side stopper convex part 91S and the guide convex part 92S are provided integrally in this example, the rotation side stopper convex part 91S and the guide convex part 92S may be provided separately. . Furthermore, the planar view shape (shape seen from above) of the guide convex portion 92S is rectangular in this example; It may be a shape other than the above shape. Further, the number of the rotation side stopper convex portions 91S and the guide convex portions 92S may not be the same.

As shown in FIG. 10, the coil spring 93S is housed in a circular hole in the small diameter portion of the lift holder 92, and is connected to the bottom surface of the large diameter portion of the lift holder 92 via the washer 94S to the stopper member 90S. It is interposed between the top surface and the top surface. The coil spring 93S is a load-applying member that applies a load to the stopper member 90S, so that the rotation-side stopper contact surface 95S and the fixed-side stopper contact surface 36 are in contact with each other, that is, the stopper portion 91S and 35 are maintained in contact with each other, and the visual recognition assembly 4 is stopped at the use position A.

The load of the coil spring 93S is applied to the rotating side stopper contact surface 95S and the fixed side stopper when a force larger than the electric force acting in the direction of forward rotation is applied to the visual recognition assembly 4 located at the use position A from the outside. This is a load that releases the mutual contact state with the contact surface 36, that is, the mutual contact state of the stopper parts 91S and 35.

(Description of holding member 7H)
As shown in FIG. 6, the holding member 7H holds the motor 7M and the speed reduction mechanism 7, and is held by the casings 6U and 6D. As a result, the holding member 7H is attached to the casings 6U, 6D together with the motor 7M and the speed reduction mechanism 7, and is housed within the casings 6U, 6D. The holding member 7H is made of an elastic member, for example, a member such as POM. The rigidity of the holding member 7H is lower (smaller) than the rigidity of the casings 6U and 6D. The holding member 7H can attach the motor 7M and the speed reduction mechanism 7 to the casings 6U and 6D with high precision.

The holding member 7H includes a gear holding section and motor holding sections 73H and 74H. The holding member 7H in this example is manufactured by molding separately into two members (two parts), for example, a first holding member 7H1 and a second holding member 7H2.

(Description of casings 6U and 6D)
As shown in FIGS. 5, 6, 8, 9, 10, and 12, the casings 6U and 6D are rotatably attached to the shaft 3 and fixed to the housing 4H with screws or the like.

The casings 6U and 6D are composed of an upper casing (cover) 6U and a lower casing (gear case) 6D. The upper casing 6U and the lower casing 6D are fixed to each other by a plurality of screws 60, four in this example. The casings 6U and 6D are made of a member whose rigidity is higher than that of the holding member 7H, such as a synthetic resin material containing glass fiber (PA material). As a result, the casings 6U and 6D have good dimensional stability compared to members whose rigidity is lower than that of the casings 6U and 6D. That is, the casings 6U and 6D have smaller manufacturing tolerances than members whose rigidity is lower than that of the casings 6U and 6D.

A housing recess 61 and a shaft 69 are provided in the lower casing 6D. The shaft portion 30, the electric rotating device (motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9), and the holding member 7H are housed in the housing recess 61. A clutch shaft 80 is fitted onto the shaft 69.

The upper casing 6U is a cover that closes the upper opening of the lower casing 6D. A circular through hole 60U is provided at one end of the upper casing 6U. On the other hand, the lower casing 6D is a gear case with an open upper surface and a closed lower surface. A circular through hole 60D is provided at one end of the lower casing 6D.

The shaft portion 30 is fitted into the through hole 60U of the upper casing 6U and the through hole 60D of the lower casing 6D. As a result, the casings 6U and 6D are rotatable in the circumferential direction of the rotation center line O via the electric rotation device (motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9) on the shaft portion 30. It is mounted on the disc portion 31 of the shaft 3 so as to be rotatable in the circumferential direction of the rotation center line O.

As shown in FIG. 10, a stopper member 90S is accommodated in the through hole 60D of the lower casing 6D. Further, as shown in FIGS. 10 and 12(B), on the lower surface of the lower casing 6D, the circumferential edge portion 62 of the through hole 60D projects slightly lower than the other portions 63. This protruding circumferential edge portion 62 of the lower surface of the lower casing 6D forms a mounting surface 62 (hereinafter referred to as "placing surface 62") that is placed on the mounting surface 310 of the shaft 3.

As a result, as shown in FIGS. 9 and 10, when the mounting surface 62 of the lower casing 6D is placed on the mounting surface 310 of the shaft 3, the lower casing 6D rotates with respect to the shaft 3. do. That is, the mounting surface 62 of the lower casing 6D slides on the mounting surface 310 of the shaft 3. This causes the viewing assembly 4 to rotate relative to the shaft 3.

As shown in FIG. 12(B), two guide recesses 64 are provided on the lower surface of the mounting surface 62 of the lower casing 6D, corresponding to the two guide protrusions 92S of the stopper member 90S. There is. Two guide protrusions 92S of the stopper member 90S are fitted into these two guide recesses 64, respectively. As a result, the stopper member 90S is attached to the casings 6U, 6D so as to be non-rotatable in the circumferential direction of the shaft portion 30 and movable in the axial direction of the shaft portion 30.

Although two guide recesses 64 are provided in this example, the number of guide recesses 64 is not particularly limited. That is, the number of guide recesses 64 may be one or three or more. In addition, although the guide recess 64 has a rectangular shape in plan view (viewed from above) in this example, the guide recess 64 has a planar view shape (viewed from above) other than a rectangular shape. It may be in the shape of

As shown in FIG. 12(B), a rotation side rotation angle regulation recess 65 of the rotation angle regulation mechanism is provided in another portion 63 of the lower surface of the lower casing 6D. The rotation side rotation angle regulating recess 65 is provided in an arc shape in the circumferential direction of the rotation center line O when viewed from below. The lower surface of the rotation-side rotation angle regulating recess 65 is recessed above the lower surfaces of the circumferential edge portion 62 and other portions 63. The rotation-side rotation angle regulating recess 65 surrounds about three-fourths of the outer circumference of the circumferential edge portion 62 .

Both end surfaces 66 and 67 on the circumferential side of the rotation side rotation angle regulating recess 65 form substantially vertical surfaces. This one end surface 66 is a first rotation angle regulating contact surface 66 that faces the first fixed rotation angle regulating contact surface 38 of the shaft 3 (hereinafter referred to as "first rotation angle regulating contact surface"). 66). The other end surface 67 is a second rotation angle regulation contact surface 67 that faces the second fixed rotation angle regulation contact surface 39 of the shaft 3 (hereinafter referred to as "second rotation angle regulation contact surface 67"). (referred to as "abutting surface 67").

The first fixed side rotation angle regulating abutment surface 38 of the shaft 3 and the first rotation side rotation angle regulating abutment surface 66 of the lower casing 6D control the rotation angle from the use position A of the visual recognition assembly 4 to the rear storage position B. That is, the rear storage rotation angle θB is regulated. In addition, the second fixed side rotation angle regulating contact surface 39 of the shaft 3 and the second rotating side rotation angle regulating contact surface 67 of the lower casing 6D are connected to each other from the use position A of the visual recognition assembly 4 to the front storage position C. The rotation angle, that is, the forward storage rotation angle θC is regulated.

(Description of wave washer 900)
The wave washer 900 is interposed between the upper surface of the accommodation recess 61 of the lower casing 6D and the lower surface of the lift gear 91 of the rotational force transmission mechanism 9, as shown in FIGS. 9 and 10. The wave washer 900 has elastic force in the axial direction of the shaft portion 30. As a result, when the visual recognition assembly 4 is electrically rotated, the wave washer 900 applies a load (the elastic force described above) to the shaft 3 via the lower casing 6D and the rotational force transmission mechanism 9, thereby tilting the visual recognition assembly 4. can be alleviated.

Note that as the inclination mitigation member, a member other than the wave washer 900 of this example may be used. That is, it is interposed between the casings 6U, 6D and the rotational force transmission mechanism 9, and has an elastic force in the axial direction of the shaft portion 30. As a result, when the visual recognition assembly 4 is electrically rotated, the visual recognition assembly 4 is Any member other than the wave washer 900 may be used as long as it alleviates the inclination.

(Description of action of embodiment)
The electric retractable vehicle peripheral visibility device 1 according to this embodiment has the above configuration, and its operation will be described below.

(Explanation of electric drive of electric rotating device)
Electric drive of the motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9 of the electric rotating device will be described with reference to FIG. 7.

In FIG. 7, the direction of the dashed arrow indicates the direction of rotation of the components of the electric rotating device when the viewing assembly 4 rotates from the use position A to the rear storage position B (during rear storage). Further, in FIG. 7, the direction of the solid line arrow indicates the rotation direction of the components of the electric rotating device when the visual recognition assembly 4 rotates from the rear storage position B to the use position A (when returning).

Here, the viewing assembly 4 is rotatably mounted on the shaft 3. The shaft 3 is fixed to a base 2 fixed to a door D of the vehicle body. As a result, the viewing assembly 4 on the rotating side is rotatable with respect to the shaft 3, base 2 and door D on the stationary side.

First, in the motor 7M and the speed reduction mechanism 7, the motor 7M is driven (forward rotation or reverse rotation) by the current input (supplied) to the switch of the switch circuit board 70M. The first worm gear 71, which is fitted to the motor shaft (drive shaft) of the motor 7M with play (idle) in the rotational direction, rotates. A helical gear 73 that meshes with the first worm gear 71 on its tooth surface and a second worm gear 72 that is fitted with the helical gear 73 coaxially rotate together.

Next, in the clutch mechanism 8, a second clutch gear 82 that meshes with the second worm gear 72 on its tooth surface, a clutch 86 that engages with the second clutch gear 82, and a notch convex portion 88 and a notch on the clutch 86. The first clutch gear 81 which is notch-fitted into the recess 87 together starts rotating in the circumferential direction of the axis O1.

Then, in the rotational force transmission mechanism 9, the rotational force of the first clutch gear 81 is transmitted to a lift gear 91 that meshes with the first clutch gear 81 on its tooth surface. However, the lift gear 91 is notch-fitted to the lift holder 92 (fitting between the rattle preventing protrusion 94 and the rattle preventing recess 95). Further, the lift holder 92 is fitted onto the shaft 3 so as not to be rotatable in the circumferential direction of the rotation center line (the center line of the shaft portion 30) O. As a result, the lift gear 91 cannot rotate in the circumferential direction of the rotation center line O. Therefore, the first clutch gear 81 rotates while meshing with the lift gear 91.

As a result, the motor 7M, the speed reduction mechanism 7, and the clutch mechanism 8 rotate in the circumferential direction of the rotation center line O. A clutch shaft 80 of this clutch mechanism 8 is fitted into a shaft portion 69 of the lower casing 6D. Further, an upper casing 6U is fixed to the lower casing 6D with screws 60. Thereby, the casings 6U and 6D also rotate in the circumferential direction of the rotation center line O. Further, a housing 4H is fixed to the casings 6U and 6D with screws or the like. Therefore, the viewing assembly 4 rotates in the circumferential direction of the rotation center line O.

(Explanation of electric stop state at usage position A)
The viewing assembly 4 is rotated from the rear storage position B to the use position A. Then, the rotation side stopper contact surface 95S of the stopper member 90S attached to the lower casing 6D comes into contact with the fixed side stopper contact surface 36 of the shaft 3 (see FIG. 20(A)). Thereby, the rotation of the casings 6U, 6D and the stopper member 90S in the circumferential direction of the rotation center line O is stopped.

At this time, the fitting slope 96 of the lift gear 91 is in contact with the fitting slope 97 of the lift holder 92 (see FIG. 15(A)). Since the lift holder 92 cannot rotate in the circumferential direction of the rotation center line O, the fitting slope 96 of the lift gear 91 is pressed against the fitting slope 97 of the lift holder 92 in the circumferential direction of the rotation center line O. (see the rightward solid line arrow in FIG. 15(A)), and the rotation of the lift gear 91 in the circumferential direction of the rotation center line O is stopped. As a result, the rotation of the first clutch gear 81, which had been rotating while meshing with the lift gear 91, is stopped. Further, the rotation of the speed reduction mechanism 7 is also stopped.

Until the viewing assembly 4 rotates from the rear storage position B to the use position A, the electric rotating device is in a state where there is almost no load. Therefore, the current flowing (supplied) to the motor 7M is small, and the output electric torque is also small. However, when the rotation of the speed reduction mechanism 7 stops, the motor 7M stalls, a lock current flows, and the maximum electric torque is output.

The force due to the maximum electric torque is transmitted to the deceleration mechanism 7, and acts via the deceleration mechanism 7 on the fitting slope 96 of the lift gear 91 and the fitting slope 97 of the lift holder 92, which are in contact with each other. That is, as shown in FIG. 15(A), the force due to the maximum electric torque is applied in the upward direction (upward solid line arrow), downward direction (downward solid line arrow), and rotational direction (rightward direction) on the fitting slopes 96 and 97. solid line arrows) respectively.

As shown in FIG. 9, this force acting in the vertical and rotational directions causes upward play (as shown by the solid upward arrows) between the stationary shaft 3 and the rotating electric rotating device and casings 6U and 6D. ), the downward play (downward solid arrow) and the rotational play (rightward solid arrow) are in close contact.

Then, the rotation-side visual recognition assembly 4 stops at the use position A with no play on the fixed-side shaft 3 via the rotation-side electric rotating device and the casings 6U, 6D. The state in which the visual recognition assembly 4 has no backlash is maintained by the self-locking effect of the second clutch gear 82 of the clutch mechanism 8 and the second worm gear 72 of the reduction mechanism 7. This suppresses the rattling of the visibility assembly 4 when the vehicle V is running and stopped, so that good visibility around the vehicle V (especially the rear side of the vehicle V) is ensured through the visibility unit 5. Ru.

(Explanation of electric storage from usage position A to rear storage position B)
When the visual recognition assembly 4 is located at the use position A shown in FIG. 3, current is input (supplied) to the switch of the switch circuit board 70M to drive the motor 7M (forward rotation or reverse rotation). Then, in the electric drive of the electric rotating device, as explained above, each component of the motor 7M, the reduction mechanism 7, the clutch mechanism 8, and the rotational force transmission mechanism 9 of the electric rotating device is indicated by the broken line in FIG. Rotate in the direction of the arrow. This will be explained in detail below.

First, the lift gear 91 rotates in the circumferential direction of the rotation center line O (in the direction of the solid arrow in FIG. 15(B)), and the fitting slope 96 of the lift gear 91 comes into contact with the fitting slope 97 of the lift holder 92. The rotation of the lift gear 91 in the circumferential direction of the rotation center line O is stopped (see FIG. 15(B)). During the period from when the lift gear 91 starts rotating until it stops rotating (when the rotational state of the lift gear 91 is from the state shown in FIG. 15(A) to the state shown in FIG. 15(B)), the casings 6U, 6D and The stopper mechanism 9S does not rotate.

After the rotation of the lift gear 91 has stopped, the power (driving force) transmitted from the motor 7M causes the first clutch gear 81 meshing with the lift gear 91 to move toward the axis O1 as shown by the broken line arrow in FIG. While rotating in the circumferential direction of (rotating on its own axis), it rotates in the circumferential direction of the rotation center line O (revolving around it).

At this time, the clutch shaft 80, which is the rotating shaft of the first clutch gear 81, moves the casings 6U and 6D from the state shown in FIG. When the assembly 4 is in the rear storage position B), it rotates in the circumferential direction of the rotation center line O (see the counterclockwise solid line arrow in FIGS. 16 and 17). Further, the housing 4H rotates in the circumferential direction of the rotation center line O together with the rotation of the casings 6U and 6D. Therefore, the viewing assembly 4 is electrically rotated in the circumferential direction of the rotation center line O from the use position A to the rear storage position B.

When the visual recognition assembly 4 is located at the rear storage position B shown in FIG. The electric rotation of No. 4 stops at the rear storage position B. That is, as shown in FIG. 17, the first rotation-side rotation angle regulation abutment surface 66 of the lower casing 6D abuts the first fixed-side rotation angle regulation abutment surface 38 of the shaft 3, so that the visual recognition assembly 4 , and stops at rear storage position B.

Then, the motor 7M stalls, a lock current flows, and the torque of the motor 7M is output as the maximum torque. On the other hand, the switch circuit board 70M senses (detects) a high current value of the lock current, and the circuit is cut off. As a result, the electric rotation of the electric rotation device is stopped.

Note that while the visual recognition assembly 4 is rotating from the use position A to the rear storage position B, in the stopper mechanism 9S, the stopper member 90S on the rotation side rotates with respect to the shaft 3 on the fixed side. That is, as shown in FIGS. 20(A) and 20(B), the rotating side stopper convex portion 91S of the stopper member 90S rotates between the two stationary side stopper convex portions 35 of the shaft 3. At this time, as shown in FIGS. 20(A) and 20(B), the lower surface of the rotation-side stopper convex portion 91S slides on the mounting surface 310 of the shaft 3.

Further, while the visual recognition assembly 4 is rotating from the use position A to the rear storage position B, the lift gear 91 and the lift holder 92 have no effect of preventing rattling in the vertical direction. In this state where there is no rattling effect in the vertical direction, the inclination of the visual recognition assembly 4 is alleviated by the wave washer 900 as the inclination reducing member. That is, when the visual recognition assembly 4 is electrically rotated, as shown in FIGS. 9 and 10, the axial direction (vertical direction) of the shaft portion 30 of the wave washer 900 interposed between the lower casing 6D and the lift gear 91 Due to the elastic force of , the inclination of the visual recognition assembly 4 is alleviated.

(Explanation of electric return from rear storage position B to usage position A)
When the visual recognition assembly 4 is located at the rear storage position B shown in FIG. 3, current is input (supplied) to the switch of the switch circuit board 70M to drive the motor 7M (forward rotation or reverse rotation). Then, in the electric drive of the electric rotating device, as explained above, each component of the motor 7M, deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9 of the electric rotating device is indicated by the solid line in FIG. Rotate in the direction of the arrow. This will be explained in detail below.

First, the lift gear 91 rotates in the circumferential direction of the rotation center line O (in the direction opposite to the direction of the solid line arrow in FIG. The lift gear 91 stops rotating in the circumferential direction of the rotation center line O (see FIG. 15(A)). During the period from when the lift gear 91 starts rotating until it stops rotating (when the rotational state of the lift gear 91 is from the state shown in FIG. 15(B) to the state shown in FIG. 15(A)), the casings 6U, 6D and The stopper mechanism 9S does not rotate.

After the rotation of the lift gear 91 has stopped, the power (driving force) transmitted from the motor 7M causes the first clutch gear 81 engaged with the lift gear 91 to move along the axis O1 as shown by the solid arrow in FIG. While rotating in the circumferential direction of (rotating on its own axis), it rotates in the circumferential direction of the rotation center line O (revolving around it).

At this time, the clutch shaft 80, which is the rotation axis of the first clutch gear 81, moves the casings 6U and 6D from the state shown in FIG. 17 to the state shown in FIG. (in the opposite direction to the solid clockwise arrow). Further, the housing 4H rotates in the circumferential direction of the rotation center line O together with the rotation of the casings 6U and 6D. Therefore, the viewing assembly 4 is electrically rotated in the circumferential direction of the rotation center line O from the rear storage position B to the use position A.

When the visual recognition assembly 4 is located at the use position A shown in FIG. 3, as shown in the explanation of the electrically stopped state in the use position A, as shown in FIG. 95S contacts the stationary stopper contact surface 36 of the shaft 3. As a result, the rotation of the casings 6U, 6D and the stopper member 90S in the circumferential direction of the rotation center line O is stopped, and the visual recognition assembly 4 is stopped at the use position A.

Then, the motor 7M stalls, a lock current flows, and the torque of the motor 7M is output as the maximum torque. On the other hand, the switch circuit board 70M senses (detects) a high current value of the lock current, and the circuit is cut off. As a result, the electric rotation of the electric rotation device is stopped.

The maximum electric torque when the motor 7M is locked acts on the fitting slope 96 of the lift gear 91 and the fitting slope 97 of the lift holder 92, which contact each other, through the reduction mechanism 7 (Fig. 15 (See the solid arrows in three directions in (A)). Then, as shown in FIG. 9, the play (clearance, idle) in the three directions of the vertical direction and the rotational direction is reduced and tightened.

Then, the rotation-side visual recognition assembly 4 stops at the use position A with no play on the fixed-side shaft 3 via the rotation-side electric rotating device and the casings 6U, 6D. The state in which the visual recognition assembly 4 has no backlash is maintained by the self-locking effect of the second clutch gear 82 of the clutch mechanism 8 and the second worm gear 72 of the reduction mechanism 7. As a result, when the vehicle V is running, rattling of the visual recognition assembly 4 is suppressed, so that a good visibility around the vehicle V (particularly the rear side of the vehicle V) is ensured via the visual recognition unit 5.

Note that while the visual recognition assembly 4 is rotating from the rear storage position B to the use position A, the rotation side stopper convex portion 91S of the stopper member 90S changes from the state shown in FIG. 20(B) to the state shown in FIG. 20(A). Then, the shaft 3 rotates between the two fixed-side stopper protrusions 35. At this time, as described above, the lower surface of the rotation-side stopper convex portion 91S slides on the mounting surface 310 of the shaft 3.

Further, while the visual recognition assembly 4 is rotating from the rear storage position B to the use position A, the lift gear 91 and the lift holder 92 have no effect of preventing rattling in the vertical direction. In this state where there is no rattling effect in the vertical direction, the inclination of the visual recognition assembly 4 is alleviated by the wave washer 900, as described above for electric storage from the use position A to the rear storage position B.

(Explanation of manual storage from usage position A to rear storage position B)
When the viewing assembly 4 is located in the use position A shown in FIG. 3, the viewing assembly 4 located in the use position A is manually rotated to the rear E of the vehicle V. That is, the visual recognition assembly 4 is manually rotated (tilted) from the use position A to the rear storage position B.

Then, manual rotational force is applied from the housing 4H of the visual recognition assembly 4 to the casings 6U and 6D of the electric storage unit 6. At this time, the deceleration mechanism 7 and the clutch mechanism 8 housed and held in the casings 6U and 6D attempt to rotate in the circumferential direction of the rotation center line O.

A first clutch gear 81 of the clutch mechanism 8 is engaged with a lift gear 91 of the rotational force transmission mechanism 9. The anti-backlash convex portion 94 of the lift gear 91 is fitted into the anti-backlash recess 95 of the lift holder 92 (notch fitting). Further, the lift holder 92 is fitted onto the shaft 3 so as not to be rotatable in the circumferential direction of the rotation center line (the center line of the shaft portion 30) O. As a result, the lift gear 91 cannot rotate in the circumferential direction of the rotation center line O.

Therefore, while meshing with the lift gear 91, the first clutch gear 81 attempts to rotate (or revolve) together with the clutch shaft 80 in the circumferential direction of the rotation center line O, as shown by the broken line arrow in FIG. . At the same time, the first clutch gear 81, while meshing with the lift gear 91, tries to rotate (tries to rotate) in the circumferential direction of the axis O1, as shown by the broken line arrow in FIG.

However, as shown in FIG. 14(A), the notch concave portion 87 of the first clutch gear 81 is notch-fitted into the notch convex portion 88 of the clutch 86. The notch concave portion 87 of the first clutch gear 81 is pressed against the notch convex portion 88 of the clutch 86 by the clutch spring 84 . The clutch 86 is fitted to the second clutch gear 82 so as not to rotate in the circumferential direction of the axis O1.

Further, the second clutch gear 82 meshes with the second worm gear 72. Therefore, the second clutch gear 82 generates a force (external force) that manually rotates the visibility assembly 4 located at the use position A toward the rear E of the vehicle V due to the self-locking effect with the second worm gear 72, i.e. , it does not rotate by the force on the second clutch gear 82 side.

Therefore, a force larger than the spring force of the clutch spring 84 is further manually applied to the visual recognition assembly 4 in a direction that causes the visual recognition assembly 4 located in the use position A to rotate toward the rear E of the vehicle V. Then, as shown in FIG. 14(B), the clutch spring 84 is moved due to the component force acting on the slope of the notch concave portion 87 of the first clutch gear 81 and the slope of the notch convex portion 88 of the clutch 86 that are notch-fitted. , shortens against the spring force. Accordingly, the first clutch gear 81 is lowered relative to the second clutch gear 82 and the clutch 86, as shown by the solid arrow in FIG. rotates in the circumferential direction.

Then, as shown in FIG. 14(C), the notch fitting between the notch concave portion 87 of the first clutch gear 81 and the notch convex portion 88 of the clutch 86 is completely removed. Then, the rotational load on the rearward E of the vehicle V of the visual recognition assembly 4 located at the use position A is reduced, and the visual recognition assembly 4 is rotated to the rear storage position B due to the small rotational load.

When the visual recognition assembly 4 is located at the rear storage position B shown in FIG. The electric rotation of the visual recognition assembly 4 is stopped at the rear storage position B due to the regulating action with the fixed side rotation angle regulating convex portion 37 of No. 3. That is, as shown in FIG. 17, the first rotation-side rotation angle regulation abutment surface 66 of the lower casing 6D abuts the first fixed-side rotation angle regulation abutment surface 38 of the shaft 3, so that the visual recognition assembly 4 , and stops at rear storage position B.

When the visibility assembly 4 located at the rear storage position B shown in FIG. and manual return. The manual return is performed manually instead of the electric return described above. Note that the explanation of manual return is omitted because it is the same as the explanation of electric return and the difference between electric and manual return.

(Explanation of manual storage (manual tilting) from usage position A to forward storage position C)
When the viewing assembly 4 is located at the use position A shown in FIG. 3, the viewing assembly 4 located at the use position A is manually rotated to the front F of the vehicle V. That is, the viewing assembly 4 is manually rotated from the use position A to the forward storage position C.

At this time, manual rotational force is applied from the housing 4H of the visual recognition assembly 4 to the casings 6U and 6D of the electric storage unit 6. Then, as shown in FIG. 20(A), the rotating side stopper abutting surface 95S of the stopper member 90S attached to the lower casing 6D is strongly pressed by the fixed side stopper abutting surface 36 of the shaft 3.

Further, the manual force (force to rotate the viewing assembly 4 from the use position A to the forward storage position C) is increased. This further strengthening force is greater than the spring force of the coil spring 93S and the spring force of the clutch spring 84.

Then, as shown in FIG. 20(C), the rotating side stopper abutting surface 95S on the slope of the stopper member 90S rides up along the stationary side stopper abutting surface 36 on the slope of the shaft 3. Accordingly, the stopper member 90S resists the spring force of the coil spring 93S, compresses the coil spring 93S, and begins to rotate in the circumferential direction of the rotation center line O while moving upward.

At this stage, the lower casing 6D to which the stopper member 90S is mounted, the components housed and held in the lower casing 6D (motor 7M, deceleration mechanism 7, and clutch mechanism 8), and the lift gear 91 are as follows: Rotation in the circumferential direction of the rotation center line O is started.

Thereafter, the lower casing 6D, the components (motor 7M, deceleration mechanism 7 and clutch mechanism 8) and The lift gear 91 continues to rotate in the circumferential direction of the rotation center line O.

Since the lower casing 6D, the components (motor 7M, deceleration mechanism 7, and clutch mechanism 8), and lift gear 91 are rotating, the rotation side stopper contact surface 95S of the slope of the stopper member 90S is as shown in FIG. 20(C). As shown in FIG. 3, it rides up along the fixed side stopper contact surface 36 of the slope of the shaft 3.

At this time, the lower surface of the rotating side stopper convex portion 91S slides on the upper surface of the stationary side stopper convex portion 35 of the shaft 3. Further, in the clutch mechanism 8, the first clutch gear 81 rotates with respect to the second clutch gear 82 and the clutch 86 from the state shown in FIG. 14(A) to the state shown in FIG. 14(D).

Then, as shown in FIG. 15(B), the fitting slope 96 of the lift gear 91 hits the fitting slope 97 of the lift holder 92, and the rotation of the lift gear 91 in the circumferential direction of the rotation center line O is stopped. Then, a force that rotates the first clutch gear 81 in the circumferential direction of the axis O1 acts on the first clutch gear 81 with a force larger than the spring force of the clutch spring 84.

Here, similarly to the manual storage from the use position A to the rear storage position B, as shown in FIG. 86 and the slope of the notch convex portion 88, the clutch spring 84 resists the spring force and shortens. Accordingly, the first clutch gear 81 is lowered relative to the second clutch gear 82 and the clutch 86, as shown by the solid arrow in FIG. rotates in the circumferential direction.

Furthermore, as shown in FIG. 14(F), the notch fitting between the notch concave portion 87 of the first clutch gear 81 and the notch convex portion 88 of the clutch 86 is completely removed. Then, the rotational load on the front F of the vehicle V of the visual recognition assembly 4 located at the use position A decreases, and the visual recognition assembly 4 begins to rotate to the forward storage position C due to the small rotational load.

During the operation in which the visual recognition assembly 4 begins to rotate to the forward storage position C, the rotating side stopper convex portion 91S of the stopper member 90S is connected to the stationary side stopper convex portion of the shaft 3, as shown in FIGS. 20(D) and (E). Part 35 is completely climbed on.

As the visual recognition assembly 4 rotates, the casings 6U and 6D also change their rotational center from the state shown in FIG. 16 to the state shown in FIG. It begins to rotate in the circumferential direction of line O (see the solid clockwise arrow in FIGS. 16 and 18).

When the visual recognition assembly 4 is located at the forward storage position C shown in FIG. The electric rotation stops at the front storage position C. That is, as shown in FIG. 18, the second rotation-side rotation angle regulation abutment surface 67 of the lower casing 6D abuts the second fixed-side rotation angle regulation abutment surface 39 of the shaft 3, and the visual recognition assembly 4 , and stops at the front storage position C.

When the visual recognition assembly 4 located at the front storage position C shown in FIG. 3 is returned to the use position A, the visual recognition assembly 4 located at the front storage position C is rotated electrically or manually to the rear E of the vehicle V. Then, each component operates electrically or manually in a direction opposite to that in the case of electrically returning from the rear storage position B to the use position A. As a result, the viewing assembly 4 located in the forward storage position C shown in FIG. 3 returns to the use position A.

(Description of stopper member 90S of stopper mechanism 9S and lower casing 6D)
The stopper member 90S of the stopper mechanism 9S is attached to the lower casing 6D through fitting between the guide convex portion 92S and the guide recess 64, so that the stopper member 90S cannot rotate in the circumferential direction of the shaft portion 30 and in the axial direction of the shaft portion 30. Mounted so that it can be moved.

Therefore, when the visual recognition assembly 4 located at the use position A shown in FIG. 6D rotates together with the shaft portion 30 in the circumferential direction of the rotation center line O (counterclockwise in the direction of the solid arrow in FIGS. 16 and 17).

Further, when the visual recognition assembly 4 located at the rear storage position B shown in FIG. rotates together with the shaft portion 30 in the circumferential direction of the rotation center line O (clockwise direction opposite to the direction of the solid arrow in FIG. 17).

Furthermore, when the visual recognition assembly 4 located at the use position A shown in FIG. 6D rotates together with the shaft portion 30 in the circumferential direction of the rotation center line O (clockwise in the direction of the solid arrow in FIGS. 16 and 18).

Simultaneously with this rotation of the stopper member 90S and the lower casing 6D, the rotating side stopper abutting surface 95S of the stopper member 90S rides over the stationary side stopper abutting surface 36 of the shaft 3. At this time, the guide protrusion 92S slides upward along the guide recess 64 (in the direction of the upward solid line arrow in FIGS. 20C, 20D, and 20E). Note that illustration of the guide recess 64 is omitted in FIGS. 20(C), (D), and (E).

Furthermore, when the visual recognition assembly 4 located at the front storage position C shown in FIG. 3 is manually rotated to the rear E of the vehicle V and returned to the use position A, the stopper member 90S and the lower casing 6D rotate together in the circumferential direction of the rotation center line O (counterclockwise direction opposite to the direction of the solid line arrow in FIG. 18).

Simultaneously with the rotation of the stopper member 90S and the lower casing 6D, the rotation side stopper contact surface 95S of the stopper member 90S moves down the fixed side stopper contact surface 36 of the lower casing 6D. At this time, the guide convex portion 92S slides downward along the guide concave portion 64 (in a direction opposite to the direction of the upward solid line arrow in FIGS. 20(C), (D), and (E)).

Thus, when the viewing assembly 4 is manually rotated between the use position A and the forward storage position C, the stopper member 90S of the stopper mechanism 9S is rotated with respect to the shaft portion 30 together with the lower casing 6D. While rotating, it moves up and down in the direction of the shaft portion 30 with respect to the lower casing 6D.

(Explanation of effects of embodiment)
The electric retractable vehicle peripheral visibility device 1 according to this embodiment has the above configuration and operation, and the effects thereof will be explained below.

The electric retractable vehicle peripheral visibility device 1 according to this embodiment includes a wave washer 900 as a tilt mitigation member between the lower casing 6D and the lift gear 91 of the rotational force transmission mechanism 9, which is a part of the electric rotation device. It was an intervention. This wave washer 900 applies a load to the shaft 3 via the lower casing 6D and the lift gear 91 when the visual recognition assembly 4 rotates between the use position A and the rear storage position B. As a result, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, when the visibility assembly 4 is electrically rotated between the use position A and the rear storage position B, the wave washer 900 is connected to the lower casing 6D and Since a load can be applied to the shaft 3 via the lift gear 91 and the inclination of the visual recognition assembly 4 with respect to the shaft 3 can be alleviated, the appearance of the visual recognition assembly 4 during electric rotation can be improved.

The electric retractable vehicle peripheral visual recognition device 1 according to this embodiment has a stopper mechanism 9S that stops the visual recognition assembly 4 rotating from the rear storage position B at the use position A. The stopper mechanism 9S includes a stopper member 90S, a stopper portion (the rotating side stopper convex portion 91S of the stopper member 90S and the stationary side stopper convex portion 35 of the mounting portion 31 of the shaft 3), and the stopper member 90S has a stopper portion (91S and 35), and a coil spring 93S that applies a load to the stopper member 90S to stop it at the use position A.

As described above, the electric retractable vehicle peripheral visual recognition device 1 according to this embodiment uses the coil spring 93S as a member that applies a load for stopping the visual recognition assembly 4 at the use position A. As a result, the electric retractable vehicle peripheral visibility device 1 according to this embodiment can achieve the following effects compared to a load applying member having a leaf spring structure.

That is, the load applying member made of the coil spring 93S can be produced (manufactured) at low cost. Furthermore, the coil spring 93S allows for a comfortable setting in terms of stress. Furthermore, assembly of the coil spring 93S and component management become easier. Furthermore, since the variation in the load (spring force) of the coil spring 93S is small, the performance of the coil spring 93S product can be stabilized.

Further, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, when the load of the coil spring 93S acts on the visual recognition assembly 4 located at the use position A, the stopper portion (91S and 35) is a load that releases the mutual contact state. As a result, the electrically retractable vehicle peripheral visual recognition device 1 according to this embodiment does not require a large load as the load of the coil spring 93S, so the coil spring 93S with a small load can be used.

Thereby, the electric retractable vehicle peripheral visual recognition device 1 according to this embodiment can minimize the rotational load on the visual recognition assembly 4. That is, the electric retractable vehicle peripheral visibility device 1 according to this embodiment can significantly reduce the frictional resistance (sliding resistance) that becomes a load during electric rotation, so that the electric rotation for electric rotation of the visual recognition assembly 4 can be greatly reduced. The output of the motor 7M of the device can be set small.

Moreover, the electric retractable vehicle peripheral visibility device 1 according to this embodiment can set the output of the motor 7M to a small value, so that the gears of the deceleration mechanism 7, clutch mechanism 8, and rotational force transmission mechanism 9 of the electric rotating device can be set small. Since the load on each component is reduced, it is possible to use low-cost materials and downsize the product if the service life is the same. On the other hand, if they are made of the same material, a longer lifespan is possible.

In the electric retractable vehicle peripheral visibility device 1 according to this embodiment, when the visibility assembly 4 is manually rotated from the use position A to the forward storage position C, the stopper member 90S rotates in the circumferential direction of the shaft portion 30. The lower casing 6D only rotates in the circumferential direction of the shaft portion 30 and does not move in the axial direction of the shaft portion 30. As a result, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, when the visibility assembly 4 is located between the use position A and the front storage position C, the upper surface of the mounting portion 31 of the shaft 3 The gap between the lower casing 6D and the lower surface of the lower casing 6D can be kept small enough to not interfere with the rotation of the visual recognition assembly 4.

As a result, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, even if the visibility assembly 4 remains located between the use position A and the front storage position C, the shaft 3 It is possible to prevent foreign substances such as water and dust from entering the gap between the mounting portion 31 and the lower casing 6D. Furthermore, by suppressing foreign matter from entering the gap, the visual recognition assembly 4 can be rotated smoothly, and the durability of the component parts can be improved.

The electric retractable vehicle peripheral visibility device 1 according to this embodiment is provided with fitting slopes 96 and 97 on the lift gear 91 and the lift holder 92 of the rotational force transmission mechanism 9. As a result, the electrically retractable vehicle peripheral visibility device 1 according to this embodiment is configured such that when the electrically-driven rotation device stops electrically rotating (when the viewing assembly 4 electrically rotates from the rear storage position B and stops at the use position A), By applying the stall torque of the motor 7M to the fitting slope 96 of the lift gear 91 and the fitting slope 97 of the lift holder 92, the clearance in the rotational direction and the vertical direction (circumferential direction and axial direction of the shaft portion 30) is reduced. It is possible to create a state where there is no play in fitting.

As a result, the electric retractable vehicle surrounding visibility device 1 according to this embodiment suppresses rattling of the visibility assembly 4 when the vehicle V is running and when the vehicle V is stopped. Good visibility (especially to the rear of the vehicle V) is ensured. Moreover, the electric retractable vehicle peripheral visibility device 1 according to this embodiment reliably closes the clearance in the rotational direction and the vertical direction even when the visibility unit 5 is a lightweight camera and the stall torque of the motor 7M is small. It is possible to create a state where there is no play in the fitting.

In the electric retractable vehicle peripheral visibility device 1 according to this embodiment, the lift gear 91 and the lift holder 92 are arranged in parallel in the radial direction of the shaft portion 30. That is, the electric retractable vehicle peripheral visibility device 1 according to this embodiment has a component on which the load of the coil spring 93S of the stopper mechanism 9S acts (the mounting portion 31 of the shaft 3 arranged in series from below). , the stopper member 90S, the washer 94S, the coil spring 93S, the lift holder 92, and the C ring 93), and the lower casing 6D and lift gear 91, which are the components on which the load of the coil spring 93S of the stopper mechanism 9S is not applied. They are arranged in parallel in the radial direction of the shaft portion 30. As a result, the lower casing 6D and the lift gear 91 are disposed outside the coil spring 93S in a parallel arrangement outside of the coil spring 93S, out of the series arrangement with respect to the load direction of the coil spring 93S.

As a result, the electric retractable vehicle peripheral visibility device 1 according to this embodiment can reduce the axial dimension (vertical dimension) of the shaft portion 30, which is the loading direction of the coil spring 93S, so that visual recognition can be made smaller. The height of the assembly 4 can be reduced. As a result, in the case where the visual recognition unit 5 is a small camera, the electrically retractable vehicle peripheral visual recognition device 1 according to this embodiment can be designed to fit the size of the small camera. Further, since the frontal projected area of the vehicle V from the front F is reduced, wind resistance is reduced, and fuel economy and design are improved. Furthermore, since the rear projected area from the rear E is also reduced, visibility from the following vehicle of the rear E of the vehicle V to the front F through the vehicle V is improved.

In the electric retractable vehicle peripheral visibility device 1 according to this embodiment, the clutch mechanism 8 includes a clutch shaft 80, a clutch spring 84, a first clutch gear 81, a clutch 86, a second clutch gear 82, and a washer. 83 and a C ring 85, it constitutes a complete clutch unit. Moreover, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, the center line O1 (axial center line O1) of the clutch shaft 80 of the clutch mechanism 8 is the same as the center line O (rotation center line O) of the shaft portion 30. is parallel to As a result, in the electric retractable vehicle peripheral visibility device 1 according to this embodiment, the height of the visibility assembly 4 can be further reduced.

The electric retractable vehicle peripheral visibility device 1 according to this embodiment has a wave, which is interposed between the lower casing 6D and the lift gear 91 and has an elastic force in the axial direction of the shaft portion 30, as the tilt mitigation member 900. A washer 900 is used. As a result, the electrically retractable vehicle peripheral visual recognition device 1 according to this embodiment can reliably reduce the inclination of the visual recognition assembly 4 with respect to the shaft 3 when the visual recognition assembly 4 is electrically rotated. Furthermore, the height of the visual recognition assembly 4 can be suppressed. Furthermore, the structure is simple, the manufacturing cost is low, and parts management is easy.

The electric retractable vehicle peripheral visibility device 1 according to this embodiment accommodates the visual recognition unit 5, which is an image pickup device, together with the electric storage unit 6, since the visual recognition unit 5 is an imaging device (camera) that images the surroundings of the vehicle V. The dimension of the housing 4H of the viewing assembly 4, that is, the axial dimension of the shaft 3 of the viewing assembly 4, can be reliably reduced compared to an outside mirror device using a mirror.

The electric retractable vehicle peripheral visibility device 1 according to this embodiment displays images of rear and side information of the vehicle V captured by the visibility unit 5, which is an imaging device, on display devices 5M, 5ML, and 5MR. Can be done. As a result, the electric retractable unit 6 and the electric retractable vehicle peripheral visibility device 1 according to this embodiment allow the driver to visually recognize the images displayed on the display devices 5M, 5ML, and 5MR, and to can be visually recognized. Thereby, the electric retractable unit 6 and the electric retractable vehicle peripheral visibility device 1 according to this embodiment can contribute to traffic safety in the same way as a mirror.

(Explanation of examples other than embodiments)
Note that this invention is not limited to the above embodiments.

1 Visibility device (peripheral visibility device for electric retractable vehicles)
2 Base 21 First fixing part 22 Second fixing part 3 Shaft 30 Axial part 31 Disc part (placing part)
310 Center part (placement surface)
311 Circumferential edge portion 32 Fixed portion 33 Engagement portion 34 Locking groove 35 Fixed side stopper convex portion (stopper portion of stopper mechanism 9S)
36 Fixed side stopper contact surface 37 Fixed side rotation angle regulation convex part (rotation angle regulation mechanism)
38 First fixed side rotation angle regulating contact surface 39 Second fixed side rotation angle regulating contact surface 4 Visual recognition assembly 4H Housing 40 Through hole 5 Visual recognition unit 51 Lens 52 Harness 54 Image processing device 55, 56 Signal line 57 Detection device 5M , 5ML, 5MR Display device (monitor)
6 Electric storage unit 6D Lower casing (gear case)
60D Through hole 6U Upper casing (cover)
60U Through hole 60 Screw 61 Accommodation recess 62 Circumferential edge portion (placement surface)
63 Other parts 64 Guide recess 65 Rotation side rotation angle regulation recess (rotation angle regulation mechanism)
66 First rotation side rotation angle regulation contact surface 67 Second rotation side rotation angle regulation contact surface 69 Shaft portion 7 Reduction mechanism (electric rotation device)
71 First worm gear 72 Second worm gear 73 Helical gear 7H Holding member 7H1 First holding member 7H2 Second holding member 73H Motor holding portion 74H Motor holding portion 7M Motor (electric rotating device)
70M Switch circuit board 8 Clutch mechanism (electric rotating device)
80 clutch shaft 81 first clutch gear 82 second clutch gear 83 washer 84 clutch spring 85 C ring 86 clutch 87 notch recess 88 notch protrusion 9 rotational force transmission mechanism (electric rotation device)
91 Lift gear 92 Lift holder 93 C ring 94 Anti-backlash protrusion 95 Anti-backlash recess 96 Fitting slope 97 Fitting slope 9S Stopper mechanism 90S Stopper member 91S Rotation side stopper projection (stopper part)
92S Guide convex portion 93S Coil spring 94S Washer 95S Rotating side stopper contact surface 900 Wave washer (tilt mitigation member)
A Usage position B Rear storage position C Front storage position D Door (vehicle body)
E Rear of vehicle V F Front of vehicle V O Rotation center line (rotation center line of visibility assembly 4, center line of shaft portion 30)
O1 Axial center line (center line of clutch shaft 80)
V Vehicle θB Rear storage rotation angle θC Front storage rotation angle

Claims (6)

A base fixed to the vehicle body,
a shaft fixed to the base;
a viewing assembly rotatably mounted to the shaft;
An electric retractable vehicle peripheral visibility device comprising:
The viewing assembly includes:
a housing, an electric storage unit,
has
The electric storage unit includes:
the shaft;
casing and
an electric rotation device that electrically rotates the visual recognition assembly between a use position and a rear storage position;
a stopper mechanism for stopping the viewing assembly rotated from the rear storage position in the use position;
The visual recognition assembly is interposed between the casing and a part of the electric rotating device, applies a load to the casing and the part of the electric rotating device in the axial direction of the shaft , and the visual recognition assembly an inclination mitigation member that alleviates the inclination of the visual recognition assembly in the axial direction with respect to the shaft when electrically rotating ;
has
the tilt mitigation member has the load solely for mitigating the tilt of the viewing assembly;
The shaft is
a shaft portion to which the casing is rotatably mounted via the electric rotating device;
a mounting section on which the casing is rotatably mounted;
has
The electric rotating device includes a motor, a reduction mechanism, a clutch mechanism, and a rotational force transmission mechanism,
The stopper mechanism is
The shaft is mounted on the shaft so as to be rotatable in the circumferential direction of the shaft and movable in the axial direction of the shaft; a stopper member mounted movably and movably in the axial direction of the shaft portion;
The stopper member and the mounting portion are respectively provided, and when the visual recognition assembly rotates from the rear storage position is located at the use position, the visual recognition assembly contacts each other and stops the visual recognition assembly at the use position. A stopper part;
coil spring and
has
The rotational force transmission mechanism is
The motor is attached to the shaft portion so as to be rotatable in the circumferential direction of the shaft portion and movable in the axial direction of the shaft portion, and the rotational force of the motor is transmitted via the speed reduction mechanism and the clutch mechanism. a first lift member;
a second lift member attached to the shaft so as to be non-rotatable in the circumferential direction of the shaft and movable in the axial direction of the shaft;
The motor is provided in each of the first lift member and the second lift member, and is transmitted to the first lift member when the visual recognition assembly that rotates electrically from the rear storage position is located in the use position. a fitting slope for closing the axial clearance of the shaft portion and the circumferential clearance of the shaft portion to stop the visual recognition assembly at the use position;
has
The coil spring is interposed between the second lift member and the stopper member,
The load of the coil spring acts on the visual recognition assembly located in the use position, and a force larger than an electric force from the outside in a direction to rotate the vehicle forward is released, and the mutual abutting state of the stopper parts is released. acting on the stopper member when
An electric retractable vehicle peripheral visibility device characterized by: The second lift member to which the load of the coil spring is acting and the first lift member to which the load of the coil spring is not acting are arranged in parallel in the radial direction of the shaft portion,
The electric retractable vehicle peripheral visibility device according to claim 1 . The clutch mechanism includes:
a clutch shaft whose center line is parallel to the shaft portion and which is rotatably attached to the casing about the center line;
a clutch spring attached to the clutch shaft;
It is attached to the clutch shaft, and is normally engaged by the spring force of the clutch spring, and resists the spring force of the clutch spring when a force greater than the spring force of the clutch spring is applied to the visual recognition assembly. a first clutch and a second clutch that are in a disconnected state;
have,
The electric retractable vehicle peripheral visibility device according to claim 1 or 2, characterized in that: The inclination mitigation member is
interposed between the casing and the rotational force transmission mechanism,
A wave washer having an elastic force in the axial direction of the shaft portion,
The electric retractable vehicle peripheral visibility device according to any one of claims 1 to 3 . The visual recognition unit is an imaging device that images the surroundings of the vehicle.
The electric retractable vehicle peripheral visibility device according to any one of claims 1 to 4 . a display device installed in the vehicle and displaying an image of the surroundings of the vehicle captured by the imaging device;
The electric retractable vehicle peripheral visibility device according to claim 5 .

Images