JPH0118433Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure that prevents a pivot ball provided on an advancement/retraction rod of a remote-controlled outside mirror from slipping out of a pivot ball holder provided in a mirror body.

A remote-controlled outside mirror is used to adjust the field of view of the outside mirror's reflected image.

The above remote control type outside mirror is equipped with an electric drive device, a mirror body is rotatably supported on a casing of the drive device, and a pivot ball holder is provided on the back side of the mirror body. , and has a structure in which a pivot ball is provided at one end of the reciprocating rod that is reciprocated in the axial direction by the drive device, and this pivot ball is fitted into the pivot ball receiver, but it is not possible to use a conventional remote control. The type outside mirror has a problem in that the structure for assembling the pivot ball provided on the reciprocating rod to the pivot ball holder provided on the mirror body is complicated, and the assembly operation is not easy. That is, in the conventional technology,
In order to hold the pivot ball in the pivot ball holder, the pivot ball holder is divided into two parts and a fastening means is provided, or the pivot ball holder is crimped with the pivot ball fitted. ,2
A split type has a complicated structure and high manufacturing costs.
In addition, there is a problem that assembly work is difficult.
Additionally, swage-type pivot ball holders cannot be applied to synthetic resin pivot ball holders, and furthermore, swaging requires a high degree of skill and special tools, and cannot be disassembled after swaging. There is a problem.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a structure for preventing the pivot ball of an outside mirror advancement/retraction lever from slipping out, which is inexpensive to manufacture, easy to assemble, and can be disassembled and assembled.

In order to achieve the above object, the present invention provides a drive device for a remote-controlled outside mirror, in which the pivot ball holder has a hemispherical concave surface provided on the back side of the mirror body, and a spherical concave surface provided on the back side of the mirror body. and a pivot ball holding part extending along the axis, and a slit cut from the edge of the holding part to the vicinity of its base,
and a protrusion is provided on the pivot ball of the retractable lever, and a recess corresponding to at least the width of the protrusion of the pivot ball is formed on the inner surface of the pivot ball holder, and the protrusion of the pivot ball is provided on the edge of the recess. It is characterized by forming an inwardly directed hook-shaped portion that engages with the.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 6. Fig. 1 is a partially cutaway front view of an embodiment of a drive device equipped with a structure for preventing the outside mirror from coming off according to the present invention, Fig. 2 is a sectional view taken along line XX in Fig. 1, and Fig. 3 is It is a YY cross-sectional view.

As shown in FIG. 2, a mirror 1 is fixed to a mirror body 2, and the mirror body 2 is rotatably supported on a casing of a drive device 3 via a pivot joint 4.

The two 6 and 6 shown in Fig. 1 are advancing and retracting rods arranged on two orthogonal axes X-X and Y-Y passing through the pivot joint 4, respectively, and have male threads formed on their cylindrical surfaces. . The reciprocating rods 6, 6 are respectively inserted into the center hole 13 of the gear 12, and the screw grooves are held between the torsion spring-shaped piano wire 14 which is engaged with the gear 12. As a result, when the gear 12 is rotated, the reciprocating rod 6 is screwed in its axial direction and driven back and forth, and excessive force can be released due to the elastic deformation of the piano wire 14. Reference numerals 15 and 15 are motors for driving the forward and backward levers, and 16 and 16 are reduction gear devices, respectively. Details of the construction of the pivot joint 4, shown in phantom lines in this figure, will now be described with reference to FIG.

The casing of the drive unit 3 is composed of a casing body 3a and a casing lid 3b, and a ball socket 4a of a pivot joint 4 is integrally connected to the casing body 3a, while a pivot joint 4 is connected to the mirror body 2.
The balls 4b are integrally arranged. The above-mentioned ball 4b is composed of a hollow hemispherical protrusion integrally molded with the mirror body 2, and is pushed toward the ball receiver 4a by a pressurizing spring 4d via a pressurizing member 4c having a hemispherical surface that fits into the hollow part. to force. 4e is a spring holding screw.

A pivot joint 4 is provided on the casing of the drive device 3.
A spherical band-shaped fixed guide wall 3 concentric with the center of
On the other hand, a spherical band-shaped movable guide wall 2a concentric with the center of the pivot joint 4 is integrally molded on the mirror body 2. By bringing the guide walls 3c and 2a into sliding contact with each other, vibration of the mirror body 2 can be prevented and the reflected image will be stabilized.

The present invention is constructed as follows so that the pivot ball 7 provided on the reciprocating rod 6 and the pivot ball holder 5 provided on the mirror body 2 can be easily assembled and there is no risk of them coming off.

Figure 4 is an enlarged detailed view of the vicinity of section F in Figure 3;
The figure is a view in the direction of arrow D with the mirror 1 fixed to the mirror body 2 removed in FIG.
FIG. 6 is a schematic exploded perspective view of the retractable lever 6 and the mirror body 2. Reference numeral 17 shown in FIG. 4 is a hemispherical concave surface formed on the back side of the mirror body 2. Continuing from the above-mentioned concave surface, a spherical band-shaped holding part 9 having an inner surface that fits into the pivot ball 7 is provided protruding from the back surface of the mirror body 2, and extends from the edge of the above-mentioned holding part 9 to its root. Slit 1 in the cut shape
Set 0.

A protrusion 8 is integrally provided on the pivot ball 7, and in a state where the protrusion 8 faces opposite to the slit 10, the protrusion 8 can be fitted from the hemispherical concave surface 17 to the inner surface of the holding part 9. A recess 18 is formed. In this embodiment, the mirror body 2 and the holding part 9 are integrally molded from synthetic resin, and during this molding, the above-mentioned recess 18 is formed by the undercut method. 1
Reference numeral 9 denotes an opening provided for die cutting during the above-mentioned molding.

The recess 18 is formed to have a width corresponding to at least the width of the protrusion 8 within the range of the die-cutting opening 19, and has a hook shape facing inward at the edge of the recess 18 of the holding portion. A hook-shaped portion 9a having a cross section is formed. Correspondingly, the protrusion 8 formed on a part of the pivot ball 7 is also formed into a hook shape, and when the pivot ball 7 is pushed into the pivot ball holder 5, the slopes of both the hook-shaped parts 8 and 9a are It is constructed so that it can slide in contact with each other, and so that when the pivot ball 7 attempts to come out of the pivot ball holder 5, both of the hook-shaped parts 8 and 9a engage to perform a retaining function.

The structure for preventing the advancing and retracting rod from coming off as configured above has a simple configuration and is therefore inexpensive to manufacture.
Further, since the slit 10 is provided in the holding portion 9 of the pivot ball receiver 5 to facilitate elastic deformation, the pivot ball 7 can be easily press-fitted into the pivot ball receiver 5. Then, the protrusion 8 of the pivot ball 7
In the normal use state in which the protrusion 8 is in the recess 18, the protrusion 8 engages with the hook-shaped portion 9a, so there is no risk that the reciprocating rod 6 will slip out of the holding portion 9. Furthermore, when the protrusion 8 is removed from the recess 18 by rotating or rotating the reciprocating rod 6 obliquely with respect to the mirror body 2, the protrusion 8 and the hook-shaped portion 9a are not caught, so that the retractable rod 6 can be easily extracted from the mirror body. Since disassembly and assembly can be performed in the manner described above, there is no need to perform caulking work to assemble the pivot portion. Therefore, there is no need to construct the pivot ball receiver from a metallic plastic material, and no special tools or sheet metal skills are required for caulking. If the mirror base and the holding part of the ball holder are integrally molded using a synthetic resin having appropriate elasticity as in this embodiment, the manufacturing cost is low.

As explained above, by applying the present invention, it is possible to construct a structure for preventing a sliding rod from falling out, which is inexpensive to manufacture, easy to assemble, and can be disassembled and reassembled.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention,
Fig. 1 is a partially cutaway front view of an example of an outside mirror drive device equipped with the slip-out prevention structure of the present invention, Fig. 2 is a partial sectional view taken along the X-X plane shown in Fig. 1, and Fig. 3 is a Similarly, a partial sectional view along the Y-Y plane, FIG. 4 is an enlarged detailed view of the F section shown in FIG. 3,
FIG. 5 is an external view as seen from the direction of arrow D with the mirror removed in FIG. 4, and FIG. 6 is a schematic exploded perspective view. 1...Mirror, 2...Mirror body, 3...Drive device, 4...Pivot joint, 4a...Ball holder, 4
b...ball, 4c...pressure member, 4d...pressure spring, 5...pivot ball holder, 6...advance/retreat rod, 7...
Pivot ball, 8...Protrusion, 9...Holding part of pivot ball holder, 10...Slit, 12...Gear, 13
... Gear center hole, 14 ... Torsion spring-shaped piano wire, 15 ... Motor, 16 ... Reduction gear device,
17... Hemispherical concave surface, 18... Recess into which the protrusion is fitted, 19... Opening for mold cutting.

Claims (1)

[Scope of utility model registration request] The mirror body is rotatably supported on the casing of the drive device of the outside mirror, and a pivot ball holder is provided on the back side of the mirror body, and the mirror body is reciprocated in the axial direction by the motor of the drive device. In a remote-controlled outside mirror drive device in which a pivot ball at the tip of an advancing/retracting rod that moves forward and backward is fitted into the pivot ball holder, the pivot ball holder has a hemispherical shape provided on the back side of the mirror body. a concave surface, and a pivot ball holding part formed by extending the above concave surface along the spherical surface, and a slit is provided from the above holding part to the vicinity of its root, and the pivot ball of the reciprocating rod is provided with a slit, and In addition to providing a protrusion, a recess with a width at least equivalent to the width of the protrusion of the pivot ball is formed on the inner surface of the pivot ball holder from the hemispherical concave surface to the holding part, and the pivot ball is attached to the edge of the recess. A structure for preventing the extension and retraction rod of an outside mirror from slipping out, which is characterized by forming an inwardly facing hook-shaped portion that engages with the protrusion of the outside mirror.