JPH06272Y2 - Electric remote control mirror - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electric remote control mirror,
In particular, the mirror body is tiltably supported with respect to the mirror drive unit housing, and one end of an advance / retreat rod provided on the drive unit is connected to the mirror body through a ball joint, and the advance / retreat rod is also attached. Is a member with screws,
The present invention relates to an electric remote control mirror configured to be reciprocally driven by a motor housed in a drive unit via a receiving gear and a drive screw.

[Conventional technology]

4 and 5 show a conventional example 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 line VV in a state where the mirror body is 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 a 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. An axial groove 7 is provided on the advancing / retreating rod 5,
The groove 7 is engaged with a protrusion 8 provided on the drive unit housing to lock the rotation, and the receiving gear 9 is fitted onto the advancing / retreating rod 5. FIG. 6 shows the appearance of the advancing / retreating rod 5, and 5a is a male screw. Each of the receiving gears 9 has a motor 10 (fourth
(Fig.), It is rotated through the reduction gear group 11.

FIG. 7 is a sectional view showing an engaged state of the receiving gear 9 and the advancing / retreating rod 5, and FIG. 8 is an external view of the receiving gear 9.

As described above, the advancing / retreating rod 5 is locked about the rotation 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, so that the advancing / retreating rod 5 rotates with the rotation of the receiving gear 9. Is driven in the axial direction to tilt the mirror body.

The female screw to be screwed with the male screw provided on the advancing / retreating rod 5 is
As shown in FIG. 8, it is composed of a torsion coil spring member 12. 9A is a side view of the torsion coil spring member, and FIG. 9B is a front view thereof.

As shown in FIG. 8, the boss portion 9a of the receiving gear is provided with a hole 9b perpendicular to the gear shaft, and the torsion coil spring member 12 is inserted therethrough.
The male screw of the advancing / retreating rod 5 is held by the torsion coil spring member 12. The reason why the female screw is constituted by the spring member in this manner is that the helical screw spring member 12 is elastically deformed when an excessive force is applied and the excessive force is released.

[Problems to be solved by the device]

In the configuration of the above conventional example, as shown in FIG.
Since the advancing / retreating rod 5 penetrates the wall of the drive unit housing 1, a waterproof means is required at this portion. However, since the advancing / retreating rod 5 is provided with the male screw 5a as shown in FIG. 6, it is difficult to waterproof the portion penetrating the wall of the housing.

Therefore, as shown in FIG. 5, the rubber waterproof cover 13 covers the penetrating portion.

The above-mentioned waterproofing means (waterproof cover 13) requires a great number of man-hours for mounting, and the assembly workability is not good.

The present invention solves the above-mentioned problems of the prior art, uses an inexpensive waterproof member, has a waterproof structure with good assembly workability, and can prevent rattling of the transmission member. Is to provide.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention supports a mirror body in a tiltable manner with respect to a mirror driving unit housing, and mounts one end of an advancing / retreating rod provided on the driving unit through a ball joint to the mirror body. The electric remote control is a member provided with a screw, and is configured to be reciprocally driven by a motor housed in a drive unit via a receiving gear and a drive screw. In the mirror, the advancing / retreating rod is a cylindrical advancing / retreating rod provided with an internal thread on its inner peripheral surface, the drive screw is a male screw member integrally formed with the receiving gear, and the male screw member is the cylinder. And a O-ring is interposed between the outer circumference of the cylindrical advancing / retreating rod and the wall of the mirror drive unit housing through which the cylindrical advancing / retreating rod passes, and Ring the receiving gear, circle Jo reciprocating rod, and driving unit brought into contact with the wall of the housing, characterized in that to prevent backlash of the receiving gear.

[Action]

According to the present invention, as described above, the cylindrical advancing / retracting rod having the female screw on the inner peripheral surface is formed, and the male screw member rotated by the receiving gear is used as the driving screw to engage with the female screw of the cylindrical advancing / retreating rod. Therefore, the mirror body can be tilted even if the outer peripheral surface of the advancing / retreating rod is a cylindrical surface, and by utilizing the fact that the outer peripheral surface of the advancing / retreating rod is a cylindrical surface, the outer periphery of the cylindrical advancing / retreating rod and the cylindrical advancing / retreating rod are By installing an O-ring between the mirror drive unit housing and the wall of the mirror drive unit housing, the airtightness and liquid in the drive unit housing can be maintained, and the assembling work can be easily performed.

Moreover, the O-ring has a receiving gear, a cylindrical advancing and retracting rod,
Since it is in contact with the housing wall, rattling of the receiving gear (in particular, rattling in the axial direction) is prevented, and smooth and reliable operation is possible.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a sectional view of an embodiment of a remote control mirror of the present invention, in which 1 is a drive unit housing and 2 is a ball joint. Reference numeral 2a denotes a convex spherical portion of a ball joint formed integrally with the mirror body 3, and 2b denotes a spherical seat of the ball joint formed on the housing 1.

Reference numeral 14 is a receiving gear configured by applying the present invention, and 15 is a forward / backward moving rod configured by applying the present invention.

FIG. 2 is a partially enlarged sectional view of the receiving gear 14 and the advancing / retreating rod 15, and FIG. 3 is an exploded perspective view of the same.

As shown in FIGS. 2 and 3, the advancing / retreating rod 15 is formed in a cylindrical shape, has an internal thread 15a on its inner peripheral surface, and forms a ball joint ball 6'at its tip.

The receiving gear 14 has a structure in which teeth 14a are provided at one end of a cylindrical boss 14b, and a cylindrical advancing / retracting rod 15 is slidably fitted in the cylindrical boss 14b. As shown in FIG. 2, since the spherical joint 6'is eccentric with respect to the center line Z of the cylindrical surface of the cylindrical advancing and retracting rod 15, rotation about the center line Z is prevented.

A tubular portion 14c is provided concentrically with the cylindrical boss 14b, the tubular portion 14c is integrated with the cylindrical boss portion 14b, and the distal end of the tubular portion 14c is screwed with the female screw 15a. Male screw
14d is provided, and a vertical split groove 14e is provided so as to divide the male screw 14d in the circumferential direction.

Further, as shown in FIG. 2, a shaft 16 is provided on the inner surface of the drive unit housing 1, and the tubular portion 14c of the receiving gear 14 is slidably fitted to the shaft 16.

With the above configuration, even if the advancing / retreating rod 15 is formed in a cylindrical shape having an outer peripheral surface of a cylindrical surface, the female screw 15a provided on the inner peripheral surface thereof is provided.
The screw feed enables forward and backward drive. That is, when the receiving gear 14 is rotated, the male screw 14d that is integrally provided with the receiving gear 14 is rotated, and the female screw 15a that is screwed with the male screw 14d is screwed to feed the cylindrical advance / retreat rod 15. In front of
Move backwards.

As described above, the cylindrical advancing / retracting rod 15 is provided in the drive unit housing 1 as shown in FIG. 1a
Between the portion penetrating the shaft and the cylindrical advancing / retreating rod, the receiving gear 1
Place the O-ring 21 in contact with No.4. By doing so, the air-tightness and water-tightness in the drive unit housing 1 can be ensured by the small, lightweight and inexpensive O-ring, and furthermore, the assembling can be facilitated and the number of assembling steps can be reduced. Moreover, rattling of the receiving gear 14 is prevented, and smooth and reliable operation is achieved.

[Effect of device]

As described in detail above, according to the present invention, it is possible to configure an electric remote control mirror using an inexpensive O-ring, having a waterproof structure that is easy to assemble, and preventing rattling of the receiving gear.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a sectional view, FIG. 2 is an enlarged sectional view of a main part, and FIG. 3 is an exploded perspective view of the same. 4 to 9 show an example of a conventional electric remote control mirror, FIG. 4 is a partially cutaway front view of a drive unit, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. Is an external view of the advancing / retreating rod, FIG. 7 is a cross-sectional view of the drive portion, FIG. 8 is an external view of the receiving gear, and FIG. 9 is a torsion coil spring member.
(A) is a side view and (B) is a front view. 1 ... Drive unit housing, 1a ... Circular through hole, 2 ... Ball joint,
2a ... Convex sphere, 2b ... Spherical seat, 3 ... Mirror body, 4 ...
Mirror body, 6, 6 '... Ball joint, 10 ... Motor, 14 ... Receiving gear, 14a ... Receiving gear teeth, 14b ... Cylindrical boss, 14c ... Tubular part, 14d ... Male screw, 14e ... Split groove, 15 … Cylindrical advancing and retracting rod, 15
a ... Female thread, 16 ... Axis, 21 ... O-ring.

Claims (1)

[Scope of utility model registration request] 1. A mirror body is tiltably supported with respect to a mirror drive unit housing, and one end of an advancing / retreating rod provided in the drive unit is connected to the mirror body via a ball joint, and Is a member provided with a screw, in an electric remote control mirror configured to be reciprocally driven by a motor housed in a drive unit via a receiving gear and a drive screw, Is a cylindrical advancing / retreating rod having an internal thread on its inner peripheral surface, the drive screw is a male screw member integrally formed with the receiving gear, and the male screw member that is the driving screw is the cylindrical advancing / retreating rod. An O-ring is interposed between the outer circumference of the cylindrical advancing / retreating rod and the wall of the mirror drive unit housing through which the cylindrical advancing / retreating rod penetrates, and the O-ring is screwed into the female screw of the rod. Cylindrical progression with the receiving gear And the rod,
An electric remote control mirror, characterized in that the drive gear housing is brought into contact with each of the walls to prevent play of the receiving gear.