JPS5822832Y2 - Automobile rear monitoring device - Google Patents

Description

[Detailed description of the invention] This invention relates to a rear monitoring device for an automobile, which is applied to an automobile body in which a rearward protruding portion is formed on the reclining vehicle body and this portion is used as a trunk room, and specifically monitors the rear lower part of the automobile. .

The monitoring device of the present invention includes a first optical device, which is the main part, installed on the rear protrusion of the automobile body, and a first optical device that allows the driver to see an image of the rear lower part of the automobile that has passed through the first optical device. A second optical device, which is an auxiliary part, is installed in front of the first optical device, and cooperates with each other so that the driver can see a sufficient range of field of view, especially at the rear of the lower part of the vehicle. The first optical device, which is the main part, is made of a thin Fresnel concave lens made of synthetic resin, a thin refractive prism made of synthetic resin, or a synthetic resin obtained by polymerizing the above-mentioned thin Fresnel concave lens and a thin refractive prism. A prime mover driven by remote control from an operation unit for rotating the thin plate optical element to lower and raise it, and a pivot mounted above the thin plate optical element. The first optical device is configured to be folded and raised on the rear projection of the vehicle body by remote control, and the first optical device is configured to be folded and raised on the rear projection of the automobile body by remote control. When the optical device No. 1 is in the reclining position, the protective plate is located on the upper surface of the flattened thin plate-like optical element and overlaps to cover it, and when the optical device is in the upright position, the protective plate is positioned in the upright thin plate-like optical element. The optical element is characterized in that it takes an attitude similar to a sloping roof above the optical element.

The present invention will be explained below with reference to the drawings.

First, two examples shown in FIGS. 1 and 2 will be explained.

The structure of the first optical device 4, which is the main part installed in the rear protruding portion of the automobile body 1 on both sides, is exactly the same as that described later with reference to FIG. An optical device equipped with a protective plate is raised up and down by a prime mover driven by a remote control from the operating unit, and when the thin plate-like optical element is in the fallen position, the protective plate is placed on the upper surface of the thin plate-like optical element. The protective plate covers the thin optical element in an overlapping manner, and when in the upright position, the protective plate assumes a tilted roof-like position above the upright thin plate-like optical element.

On the other hand, the second optical device for making the driver see the image of the rear lower part of the vehicle that has passed through the first optical device is only the rearview mirror 5 installed inside the vehicle body in the one shown in FIG. In addition to the room mirror 5, the one shown in FIG.
It has a structure in which an optical device is added that allows the vehicle to rotate relative to the ceiling of the vehicle body 1 as shown by arrows R1 and R2.

To explain the part of the thin plate-like optical element 3 constituting the second optical device of FIG. 2 mentioned above with reference to FIG. It is fixed to the moving shaft 11, and at one end of the rotating shaft 11, a rotary linoid 10 with a built-in restoring spring is installed as a prime mover, and under the action of the restoring spring, the thin plate-shaped optical element 3 is normally moved in the direction indicated by the arrow R2 in the figure. The vehicle body 1 is biased to rotate in the direction shown in FIG. The optical element 3 rotates in the direction of arrow R1 and assumes an upright posture hanging from the ceiling by remote control.

Further, as shown in the opening and 8 of the figure, the above-mentioned thin plate optical element 3 includes a thin plate Fresnel concave lens 7 made of synthetic resin and a thin plate shaped refracting prism 8 made of synthetic resin. On the other hand, the Fresnel concave pump 7 is placed on the front side and the Fresnel concave pump 7 is placed on the rear side so that they overlap with each other.

Further, as the thin plate optical element 3, either a thin Fresnel concave lens made of synthetic resin or a thin plate refractive prism made of synthetic resin may be used alone.

In Fig. 1, the field of view of the rear lower part of the vehicle body enters the first optical device 4 as shown by the chain line A, is refracted, passes through the rear window glass, enters the vehicle body, and is transferred to the second optical device, the room mirror 5, as shown by the chain line A. It reflects back to the mouth and reaches the driver.

In addition, in the case of FIG. 2, similarly to the above, the field of view of the rear lower part of the vehicle body enters the first optical device 4 as shown by the chain line A, is refracted, enters the interior of the vehicle body, and passes through the thin plate forming the second optical device. The light enters the optical element 3 as shown by the chain line, is refracted by the optical element 3, and is reflected by the room mirror 5 as shown in Fig. 2, reaching the driver.

Note that the second optical device is not limited to the two examples in which it is installed inside the vehicle body as shown in FIGS. There is no problem even if an attached optical device having a refraction function is used.

Next, referring to the embodiment shown in FIG. 4, the first optical device, which is the main part of the device of the present invention, will be explained.

In figure A, which shows the device in the upright position, the rotation shaft 11, which is rotatably supported at both ends by bearings on the mounting base 13, has a peripheral edge of the thin plate-like optical element 6 made of synthetic resin. The inner horizontal edges of the holding frame 12 holding the holding frame 12 are fixed, and both side edges of the protection plate 15 are pivotally attached to the tips of the vertical edges on both sides of the holding frame 12, respectively.

Further, the outer end of a connecting rod 14 is pivotally connected to both side edges of the protection plate 15 at a position different from the pivot point with the vertical edge of the holding frame, and the inner end of the connecting rod 14 is rotatable. It is pivotally mounted to the fixed wall surface of the bearing of the shaft 11.

A rotary solenoid 10 with a built-in restoring spring is connected to one end of the rotating shaft 11 as a prime mover, and when necessary, the rotary solenoid 10 is actuated to move the rotating shaft 1.
1 is rotated to raise or lower the device by remote control.

When the device is in the upright position, the thin plate-like optical element 6 stands up with its upper part tilted backwards as shown in A in the figure or as shown in the opening in the figure.
The field of view at the lower rear of the vehicle body is refracted by the thin plate-like optical element 6 as shown by the arrow A, as shown by the dashed line at the front of the figure, and proceeds in the direction of the arrow and enters a second optical device (not shown).

When the apparatus is in this position, the protective plate 15 takes a tilted roof-like position above the thin optical element 6 and protects the thin optical element 6 from above.

When the device in the upright position is rotated counterclockwise as indicated by arrow R2 in the figure, the device assumes a lying position on the rear projection 1' of the automobile body.

That is, as shown in the figure, the thin plate optical element 6 falls horizontally on the rear projection 1' of the vehicle body, and the protective plate 15 is positioned on the upper surface of the thin plate optical element 6 in the reclining position to cover it. The thin optical element 6 is protected from its upper surface by taking an overlapping posture.

The structure of the thin plate-like optical element 6 made of synthetic resin in the first optical device is exactly the same as that described for the thin plate-like optical element 3 in FIG. 3, which is illustrated as the second optical device. There is no problem.

That is, the thin plate-like optical element 6 is made by superimposing a thin plate-like Fresnel concave lens made of synthetic resin and a thin plate-like refractive prism made of synthetic resin, as shown in the donkey in FIG. (It is necessary to position the concave Fresnel lens behind the thin refractive prism.)
Alternatively, either a thin Fresnel concave lens or a thin refractive prism made of synthetic resin may be used alone.

Note that in each of the above cases, a transparent plate made of synthetic resin may be polymerized and bonded to reinforce the thin plate-like optical element.

Further, the circuit for operating the rotary solenoid 10, which is the prime mover, can be used as shown in FIG. 3A without any problem.

That is, the driver operates the switch 17 to lower and raise the thin plate optical element 6 by remote control.

Furthermore, as mentioned above, when the thin plate-like optical element 6 (and 3 in some cases) which is in the reclining position is raised up to monitor the rear, the drive motor etc. are rotated by a switch installed near the driver. A force that may be used to raise the thin plate-shaped optical element 6 (and 3 in some cases) in synchronization with the operation of setting the bank gear of the car when the car is backing up, that is, when the tail lamp is turned on (restored) It is also possible to monitor the rear field of view reflected in the front mirror by driving a rotary lens with a built-in spring (such as a rotary lens or a motor), and by remote automatic operation without the driver having to operate a switch.

Furthermore, by adopting a wireless method, a radio wave method, a phototube method, or a proximity switch method using the action of magnetic lines of force as a means for remote control of the first optical device, the number of steps required for installing lead wires or the amount of space required for the vehicle body can be reduced. It is also possible to perform remote control while avoiding drawbacks such as drilling holes.

In addition, when adopting these methods, it is necessary to install a motor or the like on the side of the thin plate optical element 6 (or 3 in some cases) so that the motor rotates upon reception. .

Note that among the above systems, especially when using the phototube system and the proximity switch system, it is necessary to design the system so that the light beam or magnetic field line passes through the rear window glass.

Furthermore, the mounting pedestal 13 for mounting the optical device equipped with the thin plate-like optical element 6 (and 3 in some cases) on the vehicle body is made of a rubber plate containing a magnet, etc., so that a hole is drilled in the vehicle body for attaching the device. It is possible to avoid such unsightly methods and still obtain something removable.

As described above, the present invention provides a rear monitoring device for an automobile that is adapted to a vehicle having a protrusion formed at the rear of the vehicle body, and specifically monitors the lower rear portion of the vehicle. A configuration in which a first optical device, which is a main part, is installed and mounted on the part, and an auxiliary second optical device that is located in front of the first optical device and cooperates with the first optical device is installed. Consists of.

The first optical device, which is the main part, is made of a thin Fresnel concave lens made of synthetic resin, a thin refractive prism made of synthetic resin, or a synthetic resin formed by polymerizing the thin Fresnel concave lens and the thin refractive prism. The first optical device is equipped with one of the thin plate-like optical elements and a protection plate for protecting the thin plate-like optical element.・When the optical device is in an upright position and the optical device is in a reclining position, the protective plate is positioned on top of the flattened thin plate-like optical element and overlaps to cover it, and when the optical device is in an upright position, it is protected. The plate is configured to take an attitude similar to a sloping roof above the upright thin plate optical element.

Therefore, in the present invention, (1) the first optical device, which is the main part, is lightweight because a thin plate-like optical element made of lightweight synthetic resin is used, and the displacement operation of the thin plate-like optical element can be performed smoothly; Therefore, there are fewer failures due to damage, breakage, etc.

(2) The first optical device is configured to lie down and stand up on the rear protrusion of the car body by remote control, and when the car is moving forward, the thin plate-like optical element for rearward monitoring is placed on the rear protrusion of the car body. Since the optical element is in a reclining position, the structure is simple without requiring any special reinforcement against wind pressure, and moreover, it becomes possible to use a thin plate-like optical element of the required size.

(If the optical element is always placed in an upright position, it is necessary to limit the wind pressure to a required size, and there is a drawback that the thin plate-like optical element cannot be made to the desired required size.

) (3) When the thin plate-like optical element is in a reclining position with respect to the force-driven vehicle body, a protective plate for covering is provided so as to be pivotally attached to the upper part of the thin plate-like optical element so as to move in conjunction with the movement of the optical element. This protective plate is positioned on the top surface of the thin optical element and overlaps it to cover and protect the thin optical element from being soiled by dust or other substances. When in an upright position, this protective plate assumes a tilted roof-like position above the upright thin plate optical element, allowing the optical element to function as a rear monitor even in the event of rain or snowfall. Sufficient consideration has been taken to ensure that there is no harm to the

As described above, the present invention is a practical invention that can provide a rearview monitoring device for automobiles at a low cost, which has good functions, has few failures, and is durable.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are explanatory diagrams of the optical path when the thin plate optical element is in an upright position.
The figure shows the case where the second optical device installed at the front is only the room
In addition to the laser beam, a case where a thin plate-like optical element that falls down and stands up is shown in each case, but in both figures, the optical device is shown in a schematic diagram. FIG. 3 is an enlarged explanatory view of the part constituted by the thin plate-like optical element of the second optical device shown in FIG. Figures 1 and 2 are partially enlarged views of the mouth opening. FIG. 4 is an enlarged explanatory view of the first optical device, which is the main part of the present invention, and A in the figure is an enlarged oblique view of the device in an upright position.
The opening in the figure is a side view when the vehicle is in an upright position on the rear protrusion of the vehicle body, and also shows the optical path. Figure C in the housing diagram shows the side view of the device in the laid-down position. In the drawing, 1 is an automobile body, 1' is a rear protrusion of the automobile body, 2 is a rear window glass, 3 and 6 are thin plate-like optical elements, and 4
1 is a first optical device, 5 is a room mirror, 7 is a thin plate-like Fresnel concave lens made of synthetic resin, 8 is a thin plate-like refractive prism made of synthetic resin, 10 is a rotary lens, 11 is a rotating shaft, and 12 is a holding frame. , 13 is the mounting pedestal, 14 is the connecting rod, 15
1 is a protection plate, 16 is a power source, and 17 is a switch.

Claims (4)

[Scope of utility model registration request] (1) A first optical device installed on the rear protrusion of the automobile body, and a position ahead of the first optical device in order to allow the driver to view and deliver an image of the rear lower part of the automobile that has passed through the first optical device. , a second optical device is installed on the inside of the car body ceiling, the outside of the rear window glass, or both the inside of the car body ceiling and the outside of the rear window glass, and the first optical device is a thin plate made of synthetic resin. A concave Fresnel lens, a thin refractive prism made of synthetic resin, or a thin optical element made of synthetic resin formed by polymerizing the concave lens and the refractive prism, and rotating this thin optical element. comprising a prime mover driven by an operation from an operating unit for lowering and raising the optical element, and a protective plate pivotally attached to the upper part of the thin plate-like optical element so as to move in conjunction with the movement of the optical element, When the first optical device assumes a lying down position on the rear protrusion of the automobile body, the protective plate is positioned on top of the lying thin plate-like optical element and overlaps to cover it. A rear monitoring device for an automobile, characterized in that when taking a standing position, the protective plate assumes a position like a sloped roof above the standing thin plate-like optical element. (2) The rear monitoring device for an automobile according to claim 1, wherein the second optical device consists only of a room mirror installed inside the ceiling in front of the automobile body. (3) The second optical device includes a room mirror installed inside the ceiling in front of the automobile body, a thin Fresnel concave lens made of synthetic resin, a thin plate-shaped refracting prism made of synthetic resin, or the concave lens and the refracting prism. The optical device is characterized in that it consists of an optical device in which any one of thin plate-like optical elements made of synthetic resin made by polymerizing is rotated by a prime mover so that it can be lowered or raised against the inside of the ceiling at the rear of the vehicle body. A rear monitoring device for an automobile as described in claim 1 of the utility model registration claim. (4) A utility model characterized in that the second optical device consists of a room mirror installed inside the ceiling in front of the car body and an optical device with a refraction function installed outside the rear window glass of the car. A rear monitoring device for an automobile as described in Claim 1.