JPH0647047U - Electric remote control mirror - Google Patents

Abstract

(57) [Abstract] [Purpose] A motor-operated remote control mirror has been improved so that the mirror body 4 to which the mirror body 4 is fixed is attached to a ball joint 2
When tilting it around, do not apply an unreasonable force in the direction of tilting the advancing / retreating rod 5. [Structure] The retractable rod 5 and the mirror body 3 are connected via a ball joint 14. The ball joint 14 is provided on the large-diameter concave spherical seat 3a provided on the mirror body 3, a joint 15 rotatably fitted to the large-diameter convex spherical seat, and the joint 15. The small-diameter spherical seat 15b and the small-diameter convex sphere 6'rotatably fitted to the small-diameter spherical seat 15b are provided, and the small-diameter convex sphere is fixed to the tip of the advance / retreat rod 5. There is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a remote control mirror device of a rearview mirror such as an automobile door mirror having a structure capable of arbitrarily adjusting a bearing angle of a mirror body with respect to a mirror housing.

[0002]

[Prior art]

 4 and 5 show known examples of this type of electric remote control mirror. FIG. 4 is a front view showing the drive unit with the mirror body removed, with a part of the drive unit housing 1 cut away. FIG. 5 is a sectional view taken along the line H-H with the mirror body attached. Two orthogonal axes X-X 'and Y-Y' are set, a ball joint 2 is provided at the intersection O, and the mirror body 3 is tiltably supported by the ball joint 2 as shown in FIG. 4 is the mirror body. As shown in FIG. 4, advancing and retracting rods 5 are provided on the XX 'axis and the YY' axis, respectively. The advancing / retreating rod 5 is connected to the mirror body 3 by providing a ball joint 6 at its tip as shown in FIG. A groove 7 in the axial direction is provided on the advancing / retreating rod 5, the groove 7 is engaged with a projection 8 provided on the driving part housing to stop the rotation, and the toothed gear 9 at the final reduction stage is It is fitted onto the advance / retreat rod 5. Each of the receiving gears 9 is rotated by a motor 10 via a reduction gear group 11. As described above, the advancing / retreating rod 5 is locked to rotate about the axis, and the male screw provided on the outer periphery of the advancing / retreating rod 5 is screwed into the receiving gear 9. Therefore, the advancing / retreating rod 5 is rotated as the receiving gear 9 rotates. Is driven in the axial direction and tilts the mirror body. In the present invention, the mirror body means a member that is fixed to the mirror body and tilts integrally with the mirror body. A member (for example, a mirror base) fixed to a narrowly defined mirror body fixed to the mirror body is also considered as a part of the mirror body.

[0003]

FIG. 6 is a schematic diagram for explaining the operation of the conventional electric remote control mirror shown in FIGS. 4 and 5 described above. The advancing / retreating rod 5 tries to linearly reciprocate as indicated by a reciprocating arrow aa '. On the other hand, when the mirror body 3 tilts about the ball joint 2, the spherical seat 6A of the ball joint 6 of the advancing / retreating rod 5 moves in a circular locus as indicated by a reciprocating arc arrow bb '. As a result, when the mirror body 3 tilts, the advancing / retreating rod 5 is tilted in the arrow c direction as shown in FIG. 6 (B). In order to receive such unreasonable force, a. The meshing state of the receiving gear 9 and the original gear 12, which rotate and drive the advancing / retreating rod 5, is out of order. The operation of the clutch (not shown) transmitting the output of the drive motor to the original gear 12 becomes unstable. C. If the fitting of the through hole 1a of the housing, through which the advancing / retreating rod 5 is inserted, and the advancing / retreating rod 5 is not loosened, the sliding will not be smooth, and if the fitting is loosened, looseness will occur. D. The O-ring 16 that seals between the inner peripheral surface of the through hole 1a and the advancing / retreating rod 5 is locally pressed, and the operation of the advancing / retreating rod 5 becomes unstable. The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric remote control mirror in which the advancing / retreating rod does not receive an excessive force in the tilt direction even when the mirror body tilts.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object (prevention of tilting of the forward / backward rod), the structure of the electric remote control mirror according to the present invention is such that the mirror body is tiltably supported with respect to the housing of the mirror driving unit and is mounted on the driving unit. One end of each of the plurality of threaded advancing / retreating rods is connected to the mirror body through a ball joint, and the threaded advancing / retreating rods are screwed through the screw members that are screwed into the respective threaded advancing / retarding rods. In a motor-operated remote control mirror having a structure capable of feeding, the ball joint comprises: a. A small diameter convex spherical member fixed to one end of the advancing / retreating rod; b. A large diameter concave spherical seat provided on the mirror body, c. A convex spherical member having a small diameter and a concave spherical seat having a small diameter that is fitted in a rotating manner; and a concave spherical seat having a large diameter, and a convex spherical surface having a large diameter that is rotatably fitted. Further, it is characterized by including a joint member in which the large-diameter convex spherical surface and the small-diameter concave spherical seat are eccentric.

[0005]

[Action]

 According to the above configuration, the linear movement of the advancing / retreating rod and the tilting movement of the mirror body (the circular movement caused by the tilting movement) are absorbed by the rotation of the joint member. That is, since the large-diameter convex spherical surface of the joint member and the small-diameter concave spherical seat are eccentric, when this joint member is guided and rotated by the large-diameter convex spherical surface, the center point of the small-diameter concave spherical seat is Moves along an arc whose radius is the amount of eccentricity.Therefore, displacement of the small-diameter convex spherical member fixed to the advancing / retreating rod is allowed by a length corresponding to the size of the eccentricity multiplied by the sine of the rotation angle. . 1B, which corresponds to one embodiment of the present invention, the joint 15 having the large-diameter convex spherical surface 15a and the small-diameter spherical seat 15b rotates clockwise (clockwise rotation) from the illustrated state. Then, the advancing / retreating rod 5 drawn by the solid line can move to the position 5'shown by the broken line (actually, the joint 15 is rotated by the relative movement of the advancing / retreating rod 5).

[0006]

【Example】

 FIG. 1A is a schematic side view showing an embodiment of the present invention. Since it is drawn as a model, it is not necessarily a cross-sectional side view in which the real shape is realistically projected. Reference numeral 1'denotes a drive unit housing, which rotatably supports a mirror body 3 via a ball joint 2. The component indicated by reference numeral 3 in this figure is sometimes called a mirror base, but since it is fixed to the mirror body 4, this component is also called a mirror body in the present invention. . Reference numeral 5 is an advancing / retreating rod, and 13 is a mirror housing. The advancing / retreating rod 5 and the mirror body 3 are connected to each other via a double-structured ball joint 14 constructed by applying the present invention. The enlarged detailed view is shown in FIG. The constituent members illustrated in FIG. 1B are the mirror body 3, the joint 15 and the advancing / retreating rod 5. The joint 15 is a substantially spherical member having a large-diameter convex spherical surface 15a, and is provided with a small-diameter spherical seat 15b that is eccentric to the large-diameter convex spherical surface 15a. In the present invention, the terms "large diameter" and "small diameter" refer to a relative size relationship, and do not include the meaning of, for example, a diameter of several millimeters or more. The large-diameter convex spherical surface 15a of the joint 15 is rotatably fitted and held to the large-diameter convex spherical seat 3a provided on the mirror body 3. The small-diameter spherical seat 15b of the joint 15 is rotatably fitted and connected to a small-diameter convex ball 6'fixed to one end of the advancing / retreating rod 5. FIG. 2 is an exploded perspective view showing an essential part of one embodiment of the electric remote control mirror according to the present invention. The components designated by the reference numerals are the same as those shown in FIG. It is similar.

3A and 3B are operation explanatory views of the embodiment shown in FIG. 1, where FIG. 3A shows a state corresponding to FIG. 1A described above, and FIG. 3B shows the mirror base 3 tilted. Shows the state of dd 'is a center line passing through the center of the ball joint 2 and parallel to the advancing / retreating rod 5, and the advancing / retreating rod 5 moves forward and backward linearly as indicated by a reciprocating arrow aa'. When the advancing / retreating rod 5 moves forward in the direction of arrow a from the state of FIG. 7A, the mirror body 3 tilts clockwise (clockwise) to the state of FIG. Due to the tilting, the joint 15 located on the line aa 'approaches the center line d-d'. However, the small-diameter convex sphere 6'fixed to the advancing / retreating rod 5 goes straight in the direction of the arrow a along the line aa ', and the distance from the center line d-d' does not change. Along with this, the joint 15 is turned counterclockwise (counterclockwise) to allow the small-diameter convex sphere 6'to go straight, without giving an excessive force. Therefore, as shown in FIG. 6 (B) illustrating the conventional example, various problems caused by receiving the force in the direction of the arrow c are prevented in advance, and the advancing / retreating rod 5 is smoothly and stably without rattling. Operate.

[0008]

[Effect of device]

 When the present invention is applied to an electric remote control mirror of a type using an advancing / retreating rod, the advancing / retreating rod moves forward and backward smoothly without rattling, and the mirror body fixed to the mirror body is smoothly and stably desired. It is tilted like a car, and good remote control is performed.

[Brief description of drawings]

FIG. 1A is a schematic side view showing an embodiment of the present invention, and FIG. 1B is an enlarged detailed view showing the vicinity of the joint.

FIG. 2 is an exploded perspective view of essential parts of the electric remote control mirror of the embodiment shown in FIG.

3A and 3B are diagrams for explaining the operation of the above embodiment, where FIG. 3A shows before tilting and FIG. 3B shows after tilting.

FIG. 4 is a front view showing a drive section of an electric remote control mirror of a conventional example, drawn with a lid removed.

FIG. 5 is a cross-sectional side view of a main part of a drive unit of the conventional example.

FIG. 6 is an explanatory diagram of a problem in the above conventional example,
(A) shows before tilting, and (B) shows after tilting.

[Explanation of symbols]

1 ... drive unit housing, 1 '... drive unit housing, 2 ...
Ball joint, 3 ... Mirror body, 3a ... Large diameter concave spherical seat, 4
... Mirror body, 5 ... Advancing and retracting rod, 6,6 '... Small diameter convex sphere, 13
... Mirror housing, 14 ... Ball joint, 15 ... Joint, 15a ... Large diameter convex spherical surface, 15b ... Small diameter spherical seat.

Claims (1)

[Scope of utility model registration request] 1. A mirror body is supported so as to be tiltable with respect to a housing of a mirror drive unit, and one end of a plurality of advance / retreat rods provided with the screw provided in the drive unit are respectively connected to the mirror body through ball joints. Connected to each other, and a structure in which the threaded advancing and retracting rods can be screw-fed through screw members that are screwed into the threaded advancing and retracting rods, respectively. A small diameter convex spherical member fixed to one end of the advancing / retreating rod; b. A large diameter concave spherical seat provided on the mirror body; c. A small diameter concave spherical seat that rotatably fits with the small diameter convex spherical member, and a large diameter convex spherical surface that rotatably fits with the large diameter concave spherical seat, and A joint member in which the large-diameter convex spherical surface and the small-diameter concave spherical seat are eccentric,
Electric remote control mirror.