JPH0425391Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a door mirror for an automobile that can be adjusted by remote control.

(Prior art) Conventionally, in this type of door mirror, the mirror body can be folded against the mirror base when stored, and mirror adjustment by remote control is usually done by electrically driving the mirror itself vertically and horizontally relative to the mirror body. (Fine left/right adjustment). In addition, regarding the left and right direction, the mirror body itself is driven by a motor relative to the mirror base (left and right fine adjustment and folding and storage) as described in Utility Model Application No. 60-144540 and Japanese Patent Application Publication No. 60-151142. It is known for its door mirrors.

Among the above-mentioned door mirrors, the type that is equipped with the left and right fine adjustment rotation of the mirror body and the folding and storing rotation is one in which the left and right adjustment motor is directly used for folding and storing (the above-mentioned Japanese Patent Laid-Open No. 1983-1993-1).
151142), and one in which one of the motors that drives the mirror itself vertically and horizontally relative to the mirror body is folded and stored as necessary via a drive transmission mechanism such as a solenoid (as described in the above-mentioned practical application). (described in Publication No. 144540, 1983)
In both cases, a single motor performs both horizontal adjustment and folding and storage.

(Problem to be solved by the invention) However, the above-mentioned type can be rotated widely in the horizontal direction, and as an extension of the horizontal adjustment, there is a folding storage drive, and the horizontal adjustment can also be done by folding. Storage is also performed at the same drive speed. Since the adjustment in the left and right direction is a fine adjustment, the drive speed is usually slow, and therefore the folding and storing drive must also be slow. On this point, the above type of device can make the folding and storing drive as fast as possible depending on the intervening transmission mechanism, but it has the disadvantage of requiring a separate transmission mechanism and increasing the size of the device. are doing.

(Means for Solving the Problems) The present invention was developed in view of the above circumstances, and allows for fine adjustment in the vertical and horizontal directions.Furthermore, storage in the left and right directions is performed by a single motor, and in addition, it can be folded. The object of the present invention is to propose a door mirror having a structure in which retraction is achieved by high-speed rotation without requiring a separate drive mechanism.

That is, the present invention has a basic configuration of a door mirror in which a mirror body 21 is rotatably attached to a mirror base 1 fixed to a vehicle body, and the reference numerals used in the embodiments are attached. An arm body 7 of the door mirror is rotatably supported on the protruding shaft 3, and a gear 5 is fixed to the protruding shaft 3, and the gear 5 is connected to a horizontal rotation motor 9 provided on the arm body 7 via a gear train. On the other hand, the arm body 7 rotatably supports a vertical rotation shaft 13 having a phase orthogonal to the protruding shaft 3, and the vertical rotation shaft 13 is connected to a vertical rotation motor provided on the arm body 7. 15 through a gear train, and a mirror body 21 is attached to the tip of the vertical rotation shaft 13 via a mirror body mounting plate 19, and the mirror body 21 has a portion facing the protruding shaft 3. A part of the mirror body 21 is formed with a notch, and the mirror body 21 is rotatably adjusted in the vertical and horizontal directions by driving the horizontal and vertical rotation motors 9 and 15 to rotate, and the rotation of the mirror body 21 in the horizontal direction is
A switch circuit is provided to enable selection between fine adjustment rotation and faster total folding and storage rotation.

(Function) In the case of normal adjustment, by selecting fine adjustment rotation, rotational adjustment is performed by fine rotation in the vertical and horizontal directions. For fine adjustment in the left and right direction, rotational force is transmitted to the gear of the mirror base protruding shaft by rotation of the horizontal rotation motor. This gear is fixed to the protruding shaft and does not move, so the mirror body itself rotates around the protruding shaft. For fine adjustment in the vertical direction, the vertical rotation shaft is rotated by the rotation of the vertical rotation motor, and the mirror body fixed to this shaft is rotated in the vertical direction.
At this time, since the notch of the mirror body engages with the protrusion shaft, that is, the notch of the mirror body fits into the protrusion shaft, and as a result of the vertical rotation of the mirror body, it collides with the protrusion shaft. is avoided. When retracting the door mirrors if necessary, select high-speed retracting rotation.

(Example) The present invention will be explained below based on the illustrated example.

FIG. 1 is a conceptual perspective view showing the door mirror according to the present invention.A mirror base 1 fixed to a vehicle body is integrally formed with a protruding shaft 3 formed in a hollow shape for passing a wire harness. A gear 5 is fixed to the tip of the gear 3.

The protruding shaft 3 rotatably supports an arm body 7 provided with a drive section. A horizontal rotation motor 9 is attached to the arm body 7, and this is engaged with the gear 5 through a reduction gear train 11. Since the gear 5 is fixed, when the horizontal rotation motor 9 is driven, the arm body 7 rotates about the protruding shaft 3, and therefore the mirror body 21 rotates.

On the other hand, the arm body 7 rotatably supports a shaft 13 having a phase orthogonal to the protruding shaft 3. This shaft 13 meshes with a vertical rotation motor 15 provided on the arm body 7 via a reduction gear train 17, and
A mirror body 21 is attached to the tip of the shaft 13 via a mirror body attachment plate 19. When the vertical rotation motor 15 is driven, the vertical rotation shaft 13 rotates, and as a result, the mirror body 21 rotates in the vertical direction. Note that a mirror (not shown) is attached to this mirror body 21.

The horizontal rotation motor 9 and the vertical rotation motor 15 are rotated in forward and reverse directions by switch circuits, but in particular, the horizontal rotation motor 9
The control is, as detailed later, by fine-tuning rotation and
It is configured so that a faster overall folding and storage rotation can be selected.

To explain in detail the horizontal rotation of the mirror body 21, as shown in FIGS. 2 and 3, a gear 5, which is a worm wheel, is fixed to the protruding shaft 3 on the mirror base 1, and this is connected to the worm gear 11a, gears 11b, 11b. Motor 9 through a reduction gear train such as
interlockingly connects. The arm body 7 is fitted onto the protruding shaft 3 via a friction plate 7a between it and the mirror base 1, and the gear 5 is held between the push nut 5c via the friction plate 5a and washer 5b from above and below. As a result, the gear 5 is fixed to the protruding shaft 3. Therefore, in the normal case when the motor 9 is driven, the mirror body 21 rotates around the protruding shaft 3 as described above, but when an external force is applied to the mirror body 21, the presence of the friction plate 5a causes the mirror body 21 to rotate at all times. The fixed gear 5 rotates the protruding shaft 3, thereby absorbing the external force and avoiding damage to the drive system.

As shown in FIG. 2, the vertical rotation of the mirror body 21 is driven by a motor 15 and connected to the shaft 13 via a reduction gear train 17 of gears 17a, 17a.
Friction plates 17c press the final gear 17b of the reduction gear train 17 from both sides, thereby fixing the gear 17b to the shaft 13. As described above, since the mirror body 21 is fixed to the tip of the shaft 13, the rotation of the motor 15 causes the mirror body 21 to rotate in the vertical direction. As in the case of left and right rotation, in response to unexpected external forces,
The gear 17b rotates the shaft 13 and absorbs the external force.

Further, the vertical rotation of the mirror body 21 is accompanied by approaching and separating from the protruding shaft 3, and the mirror body 21
Since contact may occur depending on the rotation angle of the protruding shaft 3, a portion facing the protruding shaft 3 is partially cut out to provide a notched portion 21a.

Next, a switch circuit for rotating the mirror body 21 in the left-right direction will be explained. In FIG. 4, the retractable retractable switch 23 and the retractable fine adjustment switch 25 are connected in series, and when the retractable retractable switch 23 is at the center position, that is, when the retractable switch 23 is not set, the fine adjustment retractable switch 25 is connected in series. It is designed so that it is electrically conductive.

When the retractable retractable switch 23 is connected to one terminal, one of the relays 27 is activated and the motor 9 is rotated. Further, when the retractable switch 23 is switched to the other terminal, the other relay 29 is activated and the motor 9 is reversed.

The fine adjustment retractable switch 25 is composed of a pair of switch elements each having a terminal for forward and reverse rotation, and these elements are operated in conjunction with each other. A pulse generation circuit 31 is interposed in one of them, and as shown in FIG. 5, the voltage applied to the motor during storage is continuous [FIG. , voltage is applied intermittently [Fig. 5 (2)].

When the fine adjustment retractable switch 25 is connected to one terminal, the switch elements are connected to each terminal in conjunction with each other, and one of the switch elements operates, for example, the relay 27, and the other of the switch elements operates. A voltage is applied to the motor 9, and the motor 9 rotates slightly. Further, when the fine adjustment retractable switch 25 is connected to the other terminal in conjunction, the relay 29 is activated and the motor 9 is reversed. In addition, in these horizontal rotation operations, the storage rotation is performed by rotating the mirror body 21.
It has a rotation angle of 20 degrees per second as an operating speed, and also has a rotation angle of 5 degrees per second for fine adjustment rotation. In the case of vertical rotation operation, the rotation angle is similarly 5 degrees per second.

(Results of the invention) The present invention is constructed as described above, and the mirror body is rotatably provided with respect to the mirror base fixed to the vehicle body. The storage rotation operation can be performed at a relatively high speed, which allows
Not only can you adjust the angular position of the door mirror while driving, but you can also see areas that are normally blind spots when parking, for example, and if you install this mirror on the fender, you can see in corners with poor visibility. , the range of use of mirrors can now be expanded, such as the ability to instantly grasp the traffic situation in left and right directions while stopping temporarily. Moreover, these two rotational speeds can be easily selected by operating a switch, and mechanically, the fine adjustment mechanism also serves as a storage mechanism, so that manufacturing costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the conceptual structure of a door mirror according to the present invention, Fig. 2 is a longitudinal sectional view showing an embodiment of the same, Fig. 3 is a longitudinal sectional view showing the horizontal rotation mechanism, and Fig. 4 is a switch circuit. FIG. 5 is a diagram showing pulse voltages during storage and fine adjustment. DESCRIPTION OF SYMBOLS 1... Mirror base, 3... Protruding shaft, 5... Gear, 7... Arm body, 9... Horizontal rotation motor, 11, 17... Reduction gear train, 13... Axis, 15
...Vertical rotation motor, 19...Mounting plate, 21...
...Mirror body.

Claims (1)

[Scope of utility model registration request] A door mirror in which a mirror body is rotatably attached to a mirror base fixed to a vehicle body, wherein an arm body of the door mirror is rotatably supported on a protruding shaft of the mirror base, and a gear is fixed to the protruding shaft. In addition, the gear is linked to a horizontal rotation motor provided on the arm body via a gear train, and on the other hand, the arm body rotatably supports a vertical rotation shaft whose phase is orthogonal to the protruding axis. The vertical rotation shaft is linked to a vertical rotation motor provided on the arm body via a gear train, and a mirror body is attached to the tip of the vertical rotation shaft via a mirror body mounting plate. , a portion facing the protruding shaft is partially cut out, and the mirror body is rotatably adjusted in vertical and horizontal directions by rotationally driving the horizontal and vertical rotation motors; A door mirror characterized by being provided with a switch circuit that allows the direction of rotation to be selected between fine-adjustment rotation and faster overall folding/storage rotation.