JPH0329620B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention relates primarily to an electrically operated rear endoscope for automobiles in which the mirror surface can be set in any direction by remote control.

Conventional technology: Conventional mirrors, such as side mirrors and rearview mirrors, are attached to the outside of a car so that the driver can understand the surroundings while driving (hereinafter referred to as rear view mirrors). Since this is for the driver to indirectly view the field of view that cannot be seen directly from the driver's seat, it is necessary to set it so that it can be easily checked at all times. For this reason, although the mirror is installed so that it can be adjusted to any desired angle, it may not be possible to maintain the set angle due to external causes or the like, and it becomes necessary to adjust the direction of the mirror sometimes or for driving convenience.

Therefore, in order to eliminate the inconvenience of conventional manual adjustment, research has been carried out on devices with a built-in electric motor that allow the driver's seat to freely adjust and set the rearview mirror even by remote control. Many types have been proposed, and some of them are in practical use. These are disclosed in many prior art. Some examples are Special Publication No. 51-21869, Special Publication No. 35983, Special Publication No. 51-42382, Special Publication No. 52.
−31618, Special Publication No. 53-17218, Japanese Patent Application Publication No. 1983-1901
No. 52-3777, No. 4775-4775, and No. 47708-45. The structures shown above are complicated in structure and are therefore unsuitable for large-sized mirrors.

However, these prior art devices have a structure in which only the mirror is displaced via a complicated drive mechanism by a reduction motor built into a casing (or frame) that also serves as a mounting support, and therefore, at first glance, the mirror is smaller. Although this seems reasonable, the structure is complicated and expensive, and it is naturally prone to failure. In addition, although it can be applied to small rear end mirrors such as those used in passenger cars, it is naturally difficult to use large mirror surfaces with a wide field of view and large mirrors used in large vehicles (e.g. freight cars, passenger cars, etc.). As a result, compared to conventional products, the drive machine and accompanying mechanism are also larger, making it unstable and expensive. For this purpose, for example,
There is also a remote-controlled rear view mirror for large vehicles, as known from Publication No. 255540, but in this type, the support body and support seat of the mirror are formed separately. The drive unit is exposed to wind, rain and dust, and the mechanism is complicated, making assembly and adjustment difficult.

Purpose of the Invention: The present invention has been made in view of the above situation, and it simplifies the drive structure and replaces the rear endoscope, which requires a large mirror surface, with a mirror plate and its support frame (back plate). It is a closed structure that incorporates a driving machine and a mechanism for displacing the mirror surface within the space formed by the Intended as an operable rear endoscope.

Composition of the invention: The rear scope of the present invention is a remote-controlled rear scope in which the direction of the mirror surface can be arbitrarily set by individually operating two driving machines, in which the supporting frame of the mirror plate is located at the rear. A spherical support part is provided at an eccentric position, and the spherical part at the tip of the rear scope support arm is engaged with this spherical support part so that the support frame is supported. Inside the support frame, a pair of guide pieces is attached in parallel to both ends of the arm rod, which is arranged in a T-shape and extends from the center of the tip of the support arm to the inside of the support frame. The remote-controlled rear endoscope is characterized in that an operating pin protruding from the end of an operating arm attached to the output shaft of each of the driving machines fixed thereto is engaged with the operating pin.

Embodiment: The present invention will be described below based on one embodiment with reference to the drawings.

The one shown in FIGS. 1 to 3 is used as a side mirror for large freight cars, buses, etc. The mirror plate 5 of the rear endoscope 1 is a convex mirror, and is a deep dish-shaped mirror with an appropriate inner volume. A mounting ring is provided on the support frame 2, the peripheral edge of which is supported by the slope part of the upper inner circumferential wall 2' and the support protrusion 3, and which is fitted and engaged with the peripheral edge part 4 of the support frame 2 using a flexible material. 4', the outer surface periphery is held down and fixed together to prevent it from coming off.
This mirror plate 5 support frame 2 has a mounting seat 6 recessed on the outside of a position on one side of the center line. This mounting seat 6 has a spherical seat 6',
At a position facing this spherical seat 6', an arm mounting piece 7 having a spherical seat 7' on its inner surface and sized to fit into the mounting seat forming recess is disposed. The spherical portion 2 at the tip of the rear endoscope support arm 20 protrudes from the vehicle body (not shown) by the spherical seat portion 7' on the mounting seat 6 side and the spherical seat portion 6' on the mounting seat 6 side.
It is designed to hold 1.

Inside the support frame 2, there are support seats 8 protruding at an appropriate height at positions symmetrically spaced from each other with respect to a center line a passing through the center 0 of the mounting portion of the rear scope support arm 20. 8 and drive machine 10,1
0' is fixed. Each of the drive units 10, 10' is directly connected to a motor 11 and a reduction gear 12 with a high reduction ratio and housed in a sealed box, and an operating arm 14 is connected to the output shaft via a friction type clutch 13. It is installed. A pin 15 is provided at the end of the operating arm 14 to protrude toward the center line.
The two drives 10, 10' as well as the operating arm 14 and pin 15 are arranged symmetrically. A shaft 16 is fixedly protruding from the tip of the rear scope support arm 20 on the axis, and an arm rod 17 is fixed to the tip of the shaft 16 perpendicularly to the axis. At both ends of this arm rod 17, bosses 17', 17' are provided at positions equally divided from the center, and pin holes 17'' are bored in each of the bosses 17', 17' parallel to the axis. A support pin 18'' at the end of the guide piece 18, which has an elongated hole 18', is fitted into each pin hole 17'' so as to be rotatable without being removable. Each guide piece 18,1
The long hole 18' of 8 has the operating arms 14, 14
Pins 15 at the ends are each slidably inserted. The shaft 16 is inserted into the support frame 2 through an elongated hole 9' formed in the wall 9 of the support frame 2 at the boundary with the recess where the support arm mounting seat 6 is formed. Further, the lead wires of the respective motors 11, 11 are connected to the lead wires of the remote control circuit via connectors provided at appropriate locations on the frame 2, which are not shown.

According to the rear endoscope of the present invention constructed as described above, the rear endoscope support arm 20 is attached to the tip of the rear endoscope support arm 20 which is attached to an appropriate place on the vehicle body by well-known means, and a control switch is arranged at the driver's seat. In order to operate the switch, both drive machines 10, 10' are started by operating the switch, for example, so that the operating arms 14, 14 are simultaneously operated downward (the output shaft of the drive machine rotates clockwise in the normal direction, Counterclockwise rotation is considered reverse.The upper part of the diagram is designated as A, and the lower part is designated as B).
Since the support frame 2 is mounted via the spherical mounting seat 6, being offset to one side from its center, the pins 15, 1 at the ends of the operating arms 14, 14
5 is engaged with the elongated hole 1 in the guide pieces 18, 18
Due to the action and reaction force trying to move 8', the drive machine 10,
10' itself moves backward, and of course the driving machines 10 and 10' operate in synchronization and are fixed to the frame 2, so the frame 2 and mirror plate 5 simultaneously move with respect to the center of the spherical mounting part. Tilt to the right in the diagram. Further, if each of the driving machines 10, 10' is operated in the opposite direction to the above, the mirror surface naturally tilts to the left in the opposite direction. When both drive machines 10 and 10' are rotated forward at the same time, the operating arm 14 attached to the upper drive machine 10 (upper A in FIG. 4) rotates upward in the figure, and the lower drive machine 10' ( Since the attached operating arm 14 (FIG. 4, upper B) rotates vertically in the figure, the arm rod 17 connected to the end of the rear scope support arm 20 is in a stationary state, so that each drive unit 10, 10' Each is moved by a reaction force, and the mirror surface is tilted upward in the same manner as described above. Conversely, if the drivers 10, 10' are operated, the mirror surface will naturally tilt downward. Furthermore, if one drive machine is stopped and the other drive machine is started,
Depending on the combination, it will tilt in an oblique direction either up, down, left or right. In short, the guide piece 1 attached to the end of the arm rod 17 on the side of the rear scope support arm 20
The mirror surface can be displaced in a desired direction by rotating the respective driving machines 10, 10' in a desired direction with reference to each operating pin 15 that engages with the mirrors 8, 18. Of course, by adjusting the amount of rotational displacement of the operating arm 14, the tilting displacement angle of the mirror surface can be arbitrarily finely adjusted. If these operating procedures are summarized, the movements will be as shown in the table in FIG. 4.

Note that during this operation, the operating pin 15 and guide piece 1
8 refers to sliding in the elongated hole 18', and the guide piece 18
The arm rod 17 is rotated by the rotation of the support pin 18''.
Since it can respond to displacement, it does not interfere with remote operation.

In addition, even if an unexpected force is normally applied to the rear endoscope from the outside, the operation arm 14 and drive units 10, 1
Since a friction clutch 13 is incorporated in the connection part with the output shaft of 0', excessive rotational force applied to the operating arm 14 by an external force at this part will not cause the arm to slip and damage the main part. Further, in the rear endoscope of the present invention, since the drive mechanism is provided inside the mirror plate and the support frame, it is not exposed to wind and rain and is kept safe.

Effects of the Invention: According to the present invention, all the drive mechanism parts are housed inside the support frame of the end plate, and the two drive machines fixed to the inner surface of the support frame can
The mirror surface angle can be displaced by skillfully utilizing the reaction force of the link mechanism, which simplifies the structure, allows for a smaller drive unit, and allows the entire rear scope to be displaced with fewer moving parts. Therefore, it can be said that it is useful as an inexpensive remote-controlled rear endoscope that allows minute displacement operations with simple operations, is trouble-free, can withstand long-term use, and is inexpensive.

[Brief explanation of the drawing]

The drawing shows a specific example of the rear endoscope of the present invention.
Figure 1 is a front view with the mirror plate removed, Figure 2 is a longitudinal side view showing the inside in the assembled state, Figure 3 is a - perspective view of Figure 1, and Figure 4 is an overview of the operation mode. It is a diagram. 1... Rear endoscope, 2... Support frame, 3... Support projection, 4... Periphery, 5... End plate, 6... Mounting seat, 7... Arm mounting piece, 6', 7' ... Spherical seat, 10, 10' ... Drive machine, 11 ... Motor, 12 ... Reduction gear, 14 ... Operation arm, 1
5...Operation pin, 16...Shaft, 17...Arm rod, 1
7'... Boss, 17''... Pin hole, 18... Guide piece, 18'... Elongated hole, 18''... Support pin, 20...
... Rear scope support arm, 21 ... bulbous part.

Claims (1)

[Claims] 1. In a remote-controlled rear endoscope in which the direction of the mirror surface can be arbitrarily set by individually operating two driving machines, the support frame of the mirror plate is placed at an eccentric position behind the mirror. A spherical support part is provided, and the spherical part at the tip of the rear scope support arm is engaged with the spherical support part so that the support frame is supported, and the interior formed by the support frame and the end plate is The said guide piece fixed inside the support frame is attached to the elongated hole of a pair of guide pieces that are attached in parallel to both ends of the arm rod which extends from the center of the tip of the support arm to the inside of the support frame and is arranged in a T-shape. A remote-controlled rear endoscope characterized in that an operating pin protruding from the end of an operating arm attached to the output shaft of each drive unit is engaged.