JP3851407B2 - Retroscope with wiper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a endoscope mainly used in an automobile, and more particularly to a endoscope with a wiper including a wiper that can be displaced together with a mirror.
[0002]
[Prior art]
Conventionally, rear-view mirrors (hereinafter referred to as rearview mirrors) that have been used mainly for mounting on the side of a car body and confirming the state of the rear of the car body are subject to dust and rain water droplets from the rain. The attachment often makes it difficult to see the rear view. In such a state, the mirror surface is generally wiped off with a cloth or the like so as to remove the obstacle. Therefore, it is dangerous if water droplets adhere to the mirror surface during running in the rain and it becomes difficult to visually recognize the rear view. Therefore, it is very inconvenient to stop the vehicle and take measures. In order to improve such inconvenience, it is conceivable to attach a wiper as means for wiping the mirror surface by remote control. As such a rearview mirror with a wiper, for example, one disclosed in Japanese Patent Laid-Open No. 3-86656 has been proposed.
[0003]
[Problems to be solved by the invention]
However, recently, the rearview mirror attached to the side of the body of an automobile has been designed so that the mirror orientation can be freely adjusted by remote control, so as disclosed in the prior art, If the structure is incorporated and operated together with the mirror in the housing, there is a problem that the wiper becomes in the way and cannot be adjusted when the mirror surface direction is adjusted by remote control. Therefore, even if a wiper is attached, it becomes a form which is operated manually. Of course, it is difficult to make it remotely operable.
[0004]
The present invention has been made in view of such problems, and provides a endoscope with a wiper capable of attaching a wiper and wiping the mirror surface by remote operation without impairing the original function of the rearview mirror. It is for the purpose.
[0005]
[Means for solving the problems and actions / effects]
In order to achieve the above-mentioned object, a endoscope with a wiper according to the present invention includes
A wiper drive mechanism provided on the back side of the mirror holder disposed in the housing, a drive device disposed in the internal space of the housing so as to face the wiper drive mechanism, and the wiper drive disposed on the front side of the mirror a wiper driven by a mechanism, a wiper with post endoscope and a flexible shaft for connecting the drive motor and the wiper driving mechanism,
The wiper drive mechanism has a casing with a built-in worm reduction mechanism, and a oscillating shaft located at the front of the casing and oscillated by a crank operated by the worm reduction mechanism. It protrudes to the front side of the mirror holder and the base end of the wiper is fixed to the protruding end,
On the inner surface of the housing, a mounting seat having a flange portion around the upper surface protrudes, and on the casing of the driving machine, the mounting portion is engaged with the flange portion so as to hold the flange portion of the mounting seat. A seat piece is provided, and the casing of the drive unit is slidably and rotatably supported with respect to the housing by engagement between the mounting seat piece and the mounting seat. Is.
[0006]
In the present invention, the drive unit and the wiper drive mechanism are separated, and the wiper and the wiper drive mechanism are supported by the mirror holder so that the flexible shaft receives power from the drive unit attached to the housing side. Since the wiper is always maintained along the mirror surface, the mirror surface can be wiped by remote control without any trouble in adjusting the direction of the mirror surface.
[0007]
Further, according to the present invention, the rocking shaft located at the front portion of the casing of the wiper drive mechanism protrudes to the front side of the mirror holder, and the base end of the wiper is fixed to the protruded end. The mounting state can be stabilized, and a space can be prevented from being formed between the housing and the mirror portion, so that rainwater can be prevented from being blown in the rain, and the interior is not exposed in terms of design and can be formed in a good appearance.
[0008]
Further, the present Oite the invention, can casing slidable and rotation of the drive motor relative to the housing by the engagement between the mounting seat piece provided on the casing of the mounting seat and the drive motor which is projecting from the inner surface of the housing Therefore, when adjusting the orientation of the mirror, even if a displacement resistance due to the rigidity of the flexible shaft itself is generated on the flexible shaft connecting the wiper drive mechanism and the drive machine by the operation of the adjustment mechanism. , driving motive is followed according to the displacement situation of full lexical Bull shaft can Succoth to eliminate the resistance due to the flexible shaft, that the direction adjustment of the mirror is hindered can be prevented.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific embodiments of the endoscope with wiper according to the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a longitudinal sectional view of a endoscope with a wiper according to the present invention, and remotely adjusts the orientation of the mirror at the center of a housing 1 having an arm mounting portion 2 having a known structure on the back surface. A mirror adjustment device 3 is attached, and a mirror holder 5 is attached via a support plate 4 connected to the mirror adjustment device 3. In the drawing, a drive unit 6 for driving the wiper is attached to a lower position space in the housing 1. Further, a wiper drive mechanism 10 and a wiper 20 are attached to the upper part of the mirror holder 5.
[0011]
As shown in FIGS. 2 and 3, the drive unit 6 is disposed in the internal space of the housing 1 with the output shaft 6d facing the wiper drive mechanism 10, and includes a motor 6a and a reduction gear train 6b. And is structured to be accommodated in the casing 6c. A square hole 6d 'is provided at the end of the output shaft 6d of the driving machine 6 so that one end of a connecting flexible shaft 9 to be described later can be inserted.
[0012]
The wiper drive mechanism 10 is provided with a casing 11 containing a worm reduction mechanism 12 on the back upper part (see FIGS. 1 and 2) of a part formed by extending the upper part of the mirror holder 5 in the figure. As shown, the support shaft 12b of the worm wheel 12a of the worm speed reduction mechanism 12 built in and supported by the casing 11 is projected to the outside, and the rotary arm 13 is attached to the projecting end of the support shaft 12b of the worm wheel 12a. 14 is connected to form a crank, and the other end of the crank link 14 is connected to a swing link 16 fixed to a protruding portion of the swing shaft 15 supported by the casing 11 by a pin 16a. The end of the oscillating shaft 15 supported by the moving link 16 passes through a through hole provided in the extended portion of the mirror holder 5 and protrudes to the front side. So, the wiper 20 is attached to an end of the swing shaft 15. The worm shaft 12c of the worm speed reduction mechanism 12 is provided with a square hole 12c ′ at the end so that the flexible shaft 9 from the output shaft 6d of the driving machine 6 can be connected.
[0013]
As the flexible shaft 9 for transmitting the power by connecting the output shaft 6d of the driving machine 6 and the worm shaft 12c of the wiper driving mechanism 10, a known shaft can be used. Further, as described above, the angular shafts 9 ′ and 9 ′ that are inserted into the square holes 6d ′ and 12c ′ provided at the ends of the respective shafts 6d and 12c are attached to both ends of the flexible shaft 9, as described above. ing.
[0014]
The wiper 20 has a blade 23 movably attached through a holding piece 22 to the tip of an arm 21 whose base is fixed to the end of the swing shaft 15 of the wiper drive mechanism 10. The blade 23 that moves to the left and right in the upper side automatically contacts the edge of the mirror 5a formed by the mirror holder 5 on both sides of the mirror 5a, and the posture is automatically adjusted by the movable support portion 24 with the holding piece 22 at the tip of the arm 21. Thus, the rotation is corrected and the blade 23 is configured to be displaced so that almost the entire surface of the mirror 5a can be wiped off.
[0015]
The thus configured rear endoscope with a wiper of the present embodiment is mounted by attaching the arm mounting portion 2 to the support arm that is attached to the side of the vehicle body of the automobile in the same manner as the conventional one, and drives the mirror adjusting device 3. If electric wiring to the motor 6a of the drive unit 6 is provided together with a motor (not shown), the wiper 20 is operated by remote control by operating an operation switch (not shown) arranged in advance in the driver's seat. be able to. If necessary, a controller such as a timer may be provided in the middle of the wiring to the drive unit 6 to limit the operation time of the wiper 20 so that an excessive wiping operation is not performed.
[0016]
Moreover, in the endoscope with a wiper according to the present embodiment, as shown in FIG. 4, a circular mounting seat 7 having a flange portion around the upper surface of the housing 1 as the mounting portion of the drive unit 6 to the housing 1. Is mounted on the back side of the casing 6c of the driving machine 6 so as to hold the flange portion 7 'of the circular mounting seat 7 so that the mounting seat piece has a required length in an inverted L shape. 6e and 6e are attached symmetrically.
[0017]
In the mounting portion of the driving device 6 configured as described above, if the mounting seat 7 on the housing 1 side is held by the mounting seat pieces 6e, 6e, the mounting seat 7 is supported. Since the mounting seat pieces 6e, 6e on the side of the driving machine 6 engage and hold the flange portion 7 'at two points where they are symmetrical, the mounting seat pieces 6e, 6e extend in the longitudinal direction (the direction of arrow A in the figure). As well as movement, rotation (in the direction of arrow B in the figure) along the mounting seat 7 is free. Accordingly, since the wiper 20 and the wiper drive mechanism 10 are supported and attached on the back surface of the extension portion of the mirror holder 5, when adjusting the orientation of the mirror 5a by remote control, the wiper drive mechanism 10 and the drive machine are adjusted. 6, even if the rigidity of the flexible shaft 9 that connects the 6 becomes the resistance for adjusting the orientation of the mirror 5 a, the drive unit 6 can be freely changed in its posture at the mounting portion to the housing 1 as described above, so that together with the mirror 5 a Since the wiper drive system is displaced as a whole, adjustment of the mirror 5a is not hindered.
[0018]
In the above description, a general automobile rearview mirror has been described. However, the wiper-equipped rear-view mirror according to the present invention is more effective when used for a rear-view endoscope used in a large freight vehicle or a bus. It can be said that. Therefore, the present invention is not limited to the above-described embodiment, and it is needless to say that the mounting position of the driving machine can be arbitrarily set within a range not impeding the driving operation. When the flexible shaft 9 that connects the wiper drive mechanism 10 and the drive machine 6 does not interfere with the adjustment of the mirror 5a, the drive machine 6 may be fixed to the housing 1. Moreover, in the attachment part with respect to the housing of the said drive device 6, the above-mentioned attachment seat 7 can also be attached to the casing 6c side of the drive device 6, and the attachment seat pieces 6e and 6e can also be attached to the housing side.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a endoscope with a wiper according to the present embodiment.
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a diagram illustrating a wiper driving device and a driving mechanism in the present embodiment.
FIGS. 4A and 4B are diagrams showing a drive attachment part of a wiper, in which FIG. 4A is a plan view and FIG. 4B is a view taken along line bb in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 3 Mirror adjustment apparatus 4 Mirror housing support board 5 Mirror holder 5a Mirror 6 Drive machine 6a Motor 6b Reduction gear train 6c Casing 6d Output shaft 6e Mounting seat piece 7 Mounting seat 9 Flexible shaft 10 Wiper drive mechanism 12 Worm reduction mechanism 12b Worm wheel shaft 12c Worm shaft 13 Rotating arm 14 Link 15 Swing shaft 16 Swing arm 20 Wiper

Claims (1)

A wiper drive mechanism provided on the back side of the mirror holder disposed in the housing, a drive device disposed in the internal space of the housing so as to face the wiper drive mechanism, and the wiper drive disposed on the front side of the mirror a wiper driven by a mechanism, a wiper with post endoscope and a flexible shaft for connecting the drive motor and the wiper driving mechanism,
The wiper drive mechanism has a casing with a built-in worm reduction mechanism, and a oscillating shaft located at the front of the casing and oscillated by a crank operated by the worm reduction mechanism. It protrudes to the front side of the mirror holder and the base end of the wiper is fixed to the protruding end,
On the inner surface of the housing, a mounting seat having a flange portion around the upper surface protrudes, and on the casing of the driving machine, the mounting portion is engaged with the flange portion so as to hold the flange portion of the mounting seat. A seat piece is provided, and the casing of the drive unit is slidably and rotatably supported with respect to the housing by engagement between the mounting seat piece and the mounting seat. Retroscope with wiper.

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