JP3518278B2 - Vehicle mirror wiper - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle mirror wiper in which a wiper is mounted on a vehicle mirror, such as a door mirror or a rearview mirror, which can be electrically tilted. 2. Description of the Related Art Heretofore, for example, a door mirror or a rearview mirror of a vehicle is known which is provided with a wiper for securing visibility by wiping water droplets attached to the surface thereof. FIG. 12 shows a rearview mirror 1 provided with such a wiper function. The rearview mirror 1 includes a mirror main body 10, a wiper main body 20, and a link mechanism 30 for connecting the wiper main body 20 to the mirror main body 10. I have. The mirror body 10 is made of a resin housing 1.
1, a reinforcing plate 12 fixed to the housing 11, a mirror driving unit 13 fixed to the reinforcing plate 12,
Wiper drive unit 1 fixed to housing 11
4, a mirror base 16 engaged with and held by the mirror driving unit 13 via a rod 15 fixed to the mirror driving unit 13, a mirror 17 held by the mirror base 16, fixed to the housing 11 and fixed to a vehicle body (not shown) A holding plate 18 for holding the stay 2 and a cover 19 for covering the holding plate 18 are provided. The wiper body 20 includes a wiper arm 2
1. A primary lever 22 connected to the free end of the wiper arm 21, a secondary lever 23 pivotally connected to both ends of the primary lever 22, a vertical lever 24 held across the secondary lever 23, and a vertical lever 24. Wiper blade 25 movably held
It has. The link mechanism 30 has a first link member 31 having one end pivotally mounted on the output shaft 14a of the wiper drive unit 14, and a first link member 31 having one end connected to the other end of the first link member 31 via a shaft 32. 2 link member 33, 2nd link member 3
The third link member 35 includes a third link member 35 having one end connected to the other end of the third link member via a shaft 34, and a wiper shaft 40 connected to the other end of the third link member 35. The third link member 35 has a cylindrical portion 11 protruding from the housing 11.
A cylindrical portion 35a is rotatably inserted and held in a. The wiper shaft 40 includes a pair of shaft members 41 and 42, and the pair of shaft members 41 and 42.
And a coupling 43 that allows the intermediate portion of the wiper shaft 40 to bend by connecting one end of the wiper shaft 40 and allows the rotation of the wiper shaft 40. The other end of the shaft member 41 (one end of the wiper shaft 40) is held by the cylindrical portion 35a so as to be relatively non-rotatable and slidable along the axial direction. Accordingly, the wiper shaft 40 has a reciprocating rotational motion converted by the link members 31, 33, 35 based on the rotational drive of the output shaft 14a. The other end of the shaft member 42 (the other end of the wiper shaft 40) is connected to the mirror base 16 and the mirror 1
7 and the base 2 of the wiper arm 21
1a is fixed by a nut 26. In the above configuration, the wiper body 20
The output shaft 14 is driven by the wiper drive unit 14.
is rotated, the link mechanism 3 is interlocked with this rotation.
0, the shaft member 41 reciprocates in the cylindrical portion 11a integrally with the holding cylinder portion 35a, and at the same time, the shaft member 42 reciprocates integrally with the shaft member 41 via the connecting member 43 to reciprocate the wiper arm 21. The wiper blade 25 wipes the surface of the mirror 17 by this reciprocating rotation. At this time, the rotation range of the wiper shaft 40 depends on the setting of the link mechanism 30, and the position of the wiper arm 21 with respect to the wiper shaft 40 is made appropriate according to the rotation range of the wiper shaft 40. Thus, the wiping range of the mirror 17 of the wiper blade 25 is determined. By the way, in the vehicle mirror wiper configured as described above, the mirror drive unit 13 and the wiper drive unit 14 are provided independently. Wiper drive unit 14
Is provided at a position distant from the mirror drive unit 13,
Thereby, the output shaft 14a of the wiper drive unit 14
The shaft 32 is located at a position away from the wiper shaft 40. Therefore, it is necessary to separately assemble the drive units 13 and 14 with the housing 11, which not only increases the cost of parts such as screws for assembling and the assembling operation cost, but also increases the output shaft 14a. The third link member 35 extending over the shaft 32 and the shaft 32 is long, and
There has been a problem that the mirror drive unit 13 must be designed to be bypassed. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended for a vehicle mirror capable of storing driving-related components in a single drive unit case and shortening a link member. It is intended to provide a wiper. In order to achieve the object, according to the first aspect of the present invention, there is provided a mirror case for holding a mirror, a mirror tilting motor stored in a driving unit case, and Tilting mechanism means for tilting the mirror by changing the amount of protrusion of a rod provided in the driving unit case in accordance with driving of the mirror tilting motor, and a wiper driving motor stored in the driving unit case And a wiper drive transmitting unit that is stored in the drive unit case and rotates the rod in conjunction with the rotation of the wiper drive motor, and reciprocates an output from the wiper drive transmitting unit that is stored in the mirror case. Conversion means for converting to a rotational movement, and a wiper body for wiping the surface of the mirror by the reciprocating rotary movement converted by the conversion means,
The rod has opposing legs,
And are formed integrally with each other, and the
A spring for securing a biasing force against the leg toward the outside of the leg ,
Is a wiper that rotates in conjunction with the wiper drive motor
-With respect to the rotation shaft of the cylindrical gear of the drive transmission means,
Can be projected into the inner wall surface of the shaft with the legs biased
It is characterized by being installed in . Next, an embodiment of a vehicle mirror wiper according to the present invention is applied to a rearview mirror for a large vehicle, and will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 50 denotes a mirror main body. The periphery and the back surface of the mirror main body 50 are covered with a housing 51. A bracket 52 for attaching the rearview mirror B to a mirror mounting shaft or a mirror mounting pivot of the vehicle body and a connector 53 connected to a power supply are fixed adjacent to the housing 51 in cooperation with a part thereof. ing. The bracket 52 and the connector 53 are connected to a cover 54.
Covered in. A drive unit case 55 including a pair of covers 55a and 55b is fixed to the housing 51, and a mirror case 56 is held by the drive unit case 55 in a tiltable manner. The mirror case 56 includes a mirror 57a
, A pair of bases 58 and a cover 59 that engage with the mirror holder 57, and a wiper body 60 is mounted on the mirror case 56. As shown in FIG. 3, a drive section C for tilting the mirror 57a and driving the wiper body 60 is housed in the drive section case 55. The drive section C includes a left / right motor 61 for tilting the mirror 57a in the left-right direction of the vehicle body, a vertical motor 62 for tilting the mirror 57a in the vertical direction of the vehicle body, and a wiper motor for driving the wiper body 60. 63
And a control circuit 64 are provided. The ends of the rods 65 to 68 protrude from the drive unit case 55, and the mirror case 56 is attached to the ends of the rods 65 to 68.
Are connected. The rods 65 to 68 are connected to the motors 61 and 62, respectively.
The projections from the drive unit case 55 are displaced so as to be variable (detailed structure will be described later) in accordance with the rotation of the head. As shown in FIG. 4, spherical heads 65a to 68a and a cylindrical body are provided. 65b to 68b, a plurality of legs 65c to 68c, and engaging projections 65d to 68d protruding outward of the two opposing legs 65c to 68c are integrally provided by resin molding. The legs 65c to 68c have legs 65c therein.
A spring 69 having a substantially U-shaped cross section is inserted in order to secure a biasing force toward the outside of each of the legs 65c to 68c.
e, it is held by the legs 65c to 68c. The rods 65 to 68 basically have substantially the same shape.
The heads 65a to 67a have one protrusion 65f to 67f,
Two projections 68f are formed on the head 68a of the rod 68. A worm gear 70 is fixed to an output shaft 61a of the left and right motors 61, and the worm gear 70 has a large-diameter gear 71a of a multi-stage gear 71 as shown in FIG.
The gear portion 72a of the cylindrical gear 72 that covers the base end of the rod 65 meshes with the small-diameter gear 71b of the multi-stage gear 71. Further, as shown in FIG.
A gear 72b is formed on the inner wall surface of the second gear 2 so that the engagement protrusion 65d of the rod 65 meshes with the gear 72b. Therefore, when the left and right motors 61 are driven, the worm gear 70, the multi-stage gear 71, and the cylindrical gear 72 rotate with the driving. The head 65a of the rod 65 is rotatably and non-rotatably engaged with the cylindrical engagement portion 58a of the base 58 by the protrusion 65f. For this reason, when the cylindrical gear 72 rotates, the rod 6 is guided by the gear 72b in accordance with the rotation direction.
5 is displaced so that the amount of protrusion from the drive unit case 55 is variable. In addition, a packing 73 held by a penetrating cylindrical portion 55c formed on the cover 55a is slidably contacted around the body 65b of the rod 65, thereby maintaining the hermeticity of the drive unit case 55 against the outside. . A worm gear 74 is fixed to the output shaft 62a of the vertical motor 62. The worm gear 74 meshes with a large-diameter gear 75a of a multi-stage gear 75, and the multi-stage gear 75
The gear portion 76a of the cylindrical gear 76 that covers the base end of the rod 66 meshes with the small-diameter gear 75b. The engagement projection 66d of the rod 66 meshes with the gear 76b of the cylindrical gear 76. Since the structure from the vertical motor 62 to the displacement of the rod 66 is the same as the structure from the left and right motor 61 to the displacement of the rod 65 shown in FIG. 5, the reference numerals are attached to FIG. Detailed description is omitted. As shown in FIG. 6, the rod 67 has a base end located in a cylindrical portion 55d formed on the cover 55b.
The inside of the cylindrical portion 55d is displaced in accordance with the displacement of the rods 65 and 66. The above-described gears 72b, 76 are provided in the cylindrical portion 55d.
Although the one corresponding to b is not formed, the engaging projection 67d elastically contacts the cylindrical portion 55d by the urging force of the leg 67c and the spring 69 by making the diameter relatively small, so Maintain position. A worm gear 77 is fixed to the output shaft 63a of the wiper motor 63. A multi-stage gear 78 meshes with the worm gear 77, a multi-stage gear 79 meshes with the multi-stage gear 78, and a cylindrical multi-stage gear is mounted on the multi-stage gear 79. The large-diameter gear 80a of the multi-stage gear 81 meshes with the large-diameter gear 81a of the multi-stage gear 81, and the small-diameter gear 80b of the multi-stage gear 81 meshes with the small-diameter gear 81b of the multi-stage gear 81.
2 are engaged. Therefore, when the wiper motor 63 is driven, the multi-stage gears 78, 79,
The cylindrical multi-stage gear 80, the multi-stage gear 81, and the sensor gear 82 rotate in conjunction with each other. The circuit board 6 is mounted on the bottom of the sensor gear 82.
A plurality of protrusions or the like contacting the four contact points 64a are provided in a state shifted in the radial direction and the circumferential direction, whereby the number of rotations (or the amount of rotation) of the sensor gear 82 is detected. The driving of the motor 63 is automatically stopped. That is, since the wiping of the mirror 57a does not need to be a continuous wiping like the windshield, the driving is automatically performed at a predetermined number of times (for example, three times). Has been stopped. The left and right motors 61 to worm gear 7
0, a power transmission mechanism from the multi-stage gear 71, the cylindrical gear 72, the rod 65, a power transmission mechanism from the vertical motor 62 to the worm gear 74, the multi-stage gear 75, the cylindrical gear 76, the rod 66, and rods 67, 68; The displacement mechanism constitutes a tilting mechanism for the mirror 57a. Further, the worm gear 77, the multi-stage gear 7
8, multi-stage gear 79, large-diameter gear 80a of cylindrical multi-stage gear 80
The power transmission mechanism that meshes with the cylindrical multi-stage gear 80 and the rod 68 constitutes a wiper drive transmission unit. On the other hand, the base end of the rod 68 is engaged with a slit 80c formed on the inner wall surface of the cylindrical multi-stage gear 80 along the axial direction. Also, the head 68a of the rod 68
Is engaged with a transmission gear 83 provided in the mirror case 56 as shown in FIG. 7, and the engaging projection 68f engages with a slit 83a of the transmission gear 83, so that relative rotation is impossible. . Therefore, when the cylindrical multi-stage gear 80 rotates, the rod 68 and the transmission gear 83 rotate in conjunction with the rotation. On the other hand, in the mirror case 65, as shown in FIGS. 8 to 10, a link mechanism D for converting the rotational motion of the wiper motor 63 into a reciprocating motion, and a link mechanism D associated therewith. A rotation shaft E is provided. The link mechanism portion D and the rotary shaft portion E include a driven gear 84 meshing with the transmission gear 83, a link arm 86 having one end pivotally supported by an eccentric shaft 85 provided on the driven gear 84,
A clutch plate 87 rotatably supported by the other end of the link arm 86, a plurality of balls 88 that can roll on the surface of the clutch plate 87, and a substantially triangular holding clutch 89 that holds the balls 88 in recesses 89a. , Holding clutch 8
9, a holding cylinder 91, a holding cylinder 91, and a holding clutch 8 that house the coil spring 90 and hold the holding clutch 89 in a non-rotatable manner.
9. Washer 9 with clutch plate 87 penetrating
2 is provided with a wiper shaft 93 that is retained. The driven gear 84 is rotatably held on a support shaft 84a fixed to the mirror holder 57. Also,
The driven gear 84 has an insertion recess 84b into which one end of the eccentric shaft 85 is inserted. The link arm 86 is disposed between the driven gear 84 and a spacer 84d rotatably held on a support shaft 84c opposed to the driven gear 84 and coaxial with the support shaft 84a and held on a cover 59. The rotary motion of the driven gear 84 is converted into a reciprocating motion by inserting the other end of the eccentric shaft 85 into the spacer 84d. The clutch plate 87 is rotatable about a wiper shaft 93, and the driven gear 8
The reciprocating motion of the link arm 86 interlocked with the rotation of No. 4 is converted into a reciprocating rotary motion. In addition, the clutch plate 87 is normally biased by the coil spring 90 to hold the ball 88.
Is formed with an engagement hole 87a. Therefore, when an unexpected load exceeding the wiping range is applied to the wiper body 60, the ball 88 separates from the engagement hole 87a. Therefore, an unexpected load is not transmitted to each component from the clutch plate 87 to the wiper motor 63,
Damage to the wiper motor 63 and the like is prevented. A gear 91a is provided on the outer peripheral surface of the upper portion of the holding cylinder 91.
Is formed. The holding cylinder 91 cooperates with the holding clutch 89 and the clutch plate 87 to hold the wiper shaft 93 so as to be relatively rotatable. The wiper body 60 is connected to a wiper shaft 93 via a screw 94. In addition, the wiper body 60 covers the upper end of the holding cylinder 91 and a screw 94.
, A wiper arm 96 connected to the arm head 95, an arm piece 97 connected to the tip of the wiper arm 96, and a free end of the arm piece 97. A primary lever 98, a secondary lever 99 swingably connected to both ends of the primary lever 98, a wiper blade 100 swingably held by a vertebra (not shown) held across the secondary lever 99,
Screw insertion part 95 formed on the side wall surface of arm head 95
b) is provided with an arm position adjusting screw 101 to be inserted into the arm position adjusting screw 101. The arm position adjusting screw 101 is formed with a worm gear 101a that meshes with the gear 91a of the holding cylinder 91. Accordingly, the wiper main body 60 is provided with the gear 91a.
The reciprocating rotational movement of the clutch plate 87 interlocked with the driving of the wiper motor 63 is transmitted through the ball 88, the holding clutch 89, and the holding cylinder portion 91 by the lock state associated with the engagement of the wiper body 60 with the worm gear 101a. Reciprocates and wipes the surface of the mirror 57a (see the two-dot chain line in FIG. 2). At this time, if the wiping range is misaligned, a screwdriver is inserted into the head 101b of the arm position adjusting screw 101 and is rotated in a predetermined direction to rotate the gear 91.
While the meshing position between a and the worm gear 101a is changing, the holding cylinder portion 91, the holding clutch 89, the ball 88, and the clutch plate 87 are rotated, whereby the wiping range of the wiper body 60 can be finely adjusted. The fine adjustment of the wiping range by the arm position adjusting screw 101 is performed by using the screw 94 on the wiper shaft 93 to the wiper body 60.
Can be similarly carried out when the camera is mounted, and the wiper main body 60 can be easily mounted. As described above, the rod 58 is connected to the mirror 57a.
The amount of protrusion from the drive unit case 55 is variable for tilting, and the dual-purpose member for rotating the wiper main body 60 for driving transmission is used.
The drive transmission (cooperation) member can be made to approach the third member. Accordingly, the link arm 86 can be shortened, and the wiper shaft 93 of the mirror 57a can be shortened.
It is not necessary to provide a wiper drive motor on the opposite side, so that the amount of protrusion of each of the rods 65 to 68 from the drive unit case 55 can be reduced, and the mirror body 50 can be flattened. As described above, in the vehicle mirror wiper of the present invention, the mirror case for holding the mirror, the two mirror tilting motors stored in the drive unit case, A tilting mechanism for tilting the mirror vertically and horizontally by driving the two mirror tilting motors; a wiper driving motor stored in the drive unit case; and a wiper drive motor stored in the drive unit case. Wiper drive transmitting means for transmitting the rotation of the wiper driving motor; converting means stored in the mirror case for converting the output from the wiper drive transmitting means into reciprocating rotational movement; and reciprocating rotation converted by the converting means. And a wiper body for wiping the surface of the mirror by movement, so that components related to driving can be contained in one driving unit case. It can be stored, and the link member can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a wiper for a vehicle mirror according to an embodiment of the present invention, in which a housing of a rearview mirror is cut away. FIG. 2 is a front view of the rearview mirror. FIG. 3 is an enlarged view of a driving unit. FIG. 4 is an explanatory view of a pivot. FIG. 5 is an enlarged cross-sectional view of a portion around a rod that is interlocked with driving of a mirror tilting motor. FIG. 6 is an enlarged cross-sectional view of a portion around a rod similarly driven by tilting of a mirror. FIG. 7 is an enlarged cross-sectional view of a part around a rod that is interlocked with driving of a motor for driving a wiper. FIG. 8 is a vertical sectional view of the mirror. FIG. 9 is an exploded perspective view of the link mechanism and the rotation shaft. FIG. 10 is an assembled perspective view of the link mechanism and the rotary shaft. FIG. 11 is an enlarged cross-sectional view of the rotation shaft part. FIG. 12 is a perspective view showing a conventional wiper for a vehicle mirror, in which a transmission portion to a wiper main body is omitted, which is an abbreviated view in a state where a housing of a rearview mirror is broken. [Description of Signs] D: Link Mechanism (Converting Means) E: Rotating Shaft (Converting Means) 55: Drive Unit Case 56: Mirror Case 57a: Mirror 60: Wiper Body 61: Left / Right Motor (Mirror Drive Motor) 62 … Vertical motor (mirror driving motor) 63… wiper motor (wiper driving motor) 68… rod

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60S 1/00-1/68 B60R 1/06-1/078

Claims (1)

(57) Claims: 1. A mirror case for holding a mirror, a mirror tilting motor stored in a drive unit case, and the drive unit case in response to driving of the mirror tilt motor. Tilting mechanism means for tilting the mirror by changing the amount of protrusion of the rod provided on the drive unit, a wiper driving motor stored in the drive unit case, and a wiper drive motor stored in the drive unit case. Wiper drive transmitting means for rotating the rod in conjunction with rotation of the motor, converting means stored in the mirror case for converting the output from the wiper drive transmitting means into reciprocating rotational movement, and converted by the converting means. and a wiper body for wiping the surface of the mirror by the reciprocating rotational motion was, said rod, each other
The opposing legs are formed integrally with the body of the rod.
And inside the opposing leg,
Spring to ensure a biasing force toward the outside of the leg portion is provided with the rod, the wiper drive
Cylindrical wiper drive transmission means that rotates in conjunction with the motor
With respect to the rotating shaft of the gear, the leg
A wiper for a vehicle mirror, wherein the wiper is installed so as to be able to protrude in a state where the portion is biased .