JPH07311305A - Reflection mirror - Google Patents

Abstract

PURPOSE:To provide a reflection mirror which is changeable in the curvature of a mirror finished surface to permit changing of one sheet of mirror into any of a concave face, convex face and plane so as to meet the purposes of use. CONSTITUTION:This reflection mirror is provided with a mirror 1 which is formed by providing the mirror with a base plate, such as one sheet of metallic plate having elasticity, resin plate or glass plate subjected to a special treatment, forming the one surface of this base plate as the mirror finished surface and curving the mirror finished surface as the concave shape so that the mirror finished surface is returned to the concave shape even if the mirror finished surface is formed into concave face by exerting external force thereon from the other surface. The mirror 1 is provided with a cylindrical frame 17 for fixing this mirror with its other surface positioned inside to its front end. This cylindrical frame 17 is provided with a rear box 21 inserted freely slid ably thereto and the inside surface of the rear surface plate 22 of the rear box 21 is provided with a pressing box 28 for pressing the other surface of the mirror. The other surface of the mirror is pressed to the rear box 21 with the pressing box 28 by rotation, etc., of the cylindrical frame 17.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention can change the curvature which can be used for a concave mirror having a concave surface, a convex mirror having a convex surface, or a plane mirror having a flat surface by changing the curvature of the mirror surface. Regarding the reflector.

[0002]

2. Description of the Related Art Generally, a convex mirror B as shown in FIG. 1 diffuses parallel rays, and a wider range can be seen in comparison with the flat mirror A, so that the field of view becomes large and the rearview mirror, the entrance of a garage, and the curve of a road. It is used for mirrors that are attached to places.

Further, when the convex mirror B is used with a light source, the light is diffused and therefore is not used for the purpose of condensing the light.

Next, the concave mirror C conversely converges the parallel rays,
The field of view is smaller because it can be seen in a narrower area compared to the plane mirror A, but if the light source is placed within the focus of the concave mirror C, the light will be condensed, and the light will reach far and the headlights of the car At the beginning, it is used for various things.

A concave mirror for shaving that is often used at home is equipped with a flat mirror on the back side of the concave mirror so that it can be usually used as a flat mirror, and the flat mirror and the concave mirror are inverted when used. .

As described above, the conventional reflecting mirror is manufactured and used in accordance with its purpose of use, such as a concave mirror for enlarging, a convex mirror for reducing, and a plane mirror for equal magnification.

[0007]

Since the conventional reflecting mirror is manufactured for each type according to its purpose of use,
If the purpose of use changes, there is no alternative but to replace it, and it is troublesome to replace it each time according to the purpose of use.

Further, there is a drawback that resources are wasted because it is necessary to manufacture a wide variety according to the purpose of use.

In addition, the convex mirror has a fixed curvature of the convex surface, which widens the field of view, but the image reflected on the mirror is small, which makes it difficult to discriminate the object and is inconvenient when it is desired to temporarily enlarge the image. There is a problem that it cannot be used for this kind of application.

In contrast to the convex mirror, the concave mirror has a large image reflected on the mirror, but has a drawback of narrowing the field of view, and there is a problem that the field of view cannot be temporarily widened.

Further, when used as a light reflecting mirror, the concave surface has a fixed curvature and is constant. Therefore, it is necessary to move the light source in order to change the light converging rate, and it is possible to prevent the power supply line connected to the light source from being broken. There was a drawback that caused it.

Furthermore, since a concave mirror for shaving requires two mirrors, a flat mirror and a concave mirror, the material is wasted and the space for reversing is needed because it is used by reversing at the time of use. It becomes bulky and can not be placed in a narrow place,
It was inconvenient.

As a result of diligent efforts to solve the above problems and drawbacks, the present invention has invented a reflecting mirror capable of changing the curvature of one mirror surface into a concave surface, a convex surface or a flat surface according to the purpose of use. The purpose is to provide the reflector.

[0014]

In order to achieve the above object, the present invention provides an elastic metal plate, a resin plate, or a specially treated glass plate and the like, and one or both of them is a mirror surface. And

The mirror surface is a concave surface or a convex surface to form a mirror, and a frame for supporting the periphery of the mirror is provided.

An external force is applied from one or the other of the mirror surfaces of the mirror whose periphery is supported by the frame to a convex surface or a concave surface, which is opposite to the above, so that the curvature can be changed.

Alternatively, an elastic metal plate, a resin plate, or a specially treated glass plate is provided, and one surface of the substrate is a mirror surface, and the mirror surface is a concave surface and an external force is applied from the other surface to make the mirror surface a convex surface. Also, a mirror for returning to the concave state is provided.

A cylindrical frame for fixing the mirror to the tip with the other surface facing inward is provided, and a rear box slidably fitted in the cylindrical frame is provided.

Further, after that, a push box for pressing the other surface of the mirror is provided on the box, and a cylindrical frame is rotated on the rear box to move the push box forward or backward with respect to the other surface of the mirror so that the curvature can be changed.

[0020]

A substrate 2 such as an elastic metal plate, a resin plate, or a specially treated glass plate is provided, and one or both surfaces of the substrate 2 are mirror surfaces, and the mirror surface is a concave surface or a convex surface. Since the mounting frame 3 for supporting the periphery of the mirror 1 is provided, when the external force is applied from the convex side of the mirror surface to the concave or convex mirror 1, the convex surface is deformed into a concave surface by the spring action of the substrate 2.

In this case, if an external force is applied from the convex surface side of the mirror surface of the mirror 1, the convex surface becomes a concave surface, and the concave state can be maintained, or if the external force is removed, the original convex surface can be restored.

Alternatively, if one surface of the substrate 2 such as a single metal plate, a resin plate, or a specially treated glass plate is formed into a concave surface as a mirror surface and an external force is applied from the other surface of the substrate 2, the mirror surface becomes a convex surface. A mirror 1 is provided which returns to the original concave surface when external force is removed.

A cylindrical frame 17 is fixed to the tip with the other surface of the mirror 1 facing inward, and a rear box 21 slidably fitted in the cylindrical frame 17 is provided. Since the push box 28 that presses the surface is provided, and the cylindrical box 17 is rotated in the rear box 21 to move the push box 28 forward with respect to the other surface of the mirror, the other surface of the mirror is pressed from the inside. The concave mirror surface can be flat or convex.

Further, the mirror surface 1 which is flat or convex is
When the push box 28 is retracted from the other surface of the mirror by rotating the cylindrical frame 17 in the rear box 21 in the direction opposite to the previous direction, the substrate 2
Since the spring returns to the concave surface by the spring action, the mirror surface also returns to the concave surface.

[0025]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIGS. 1 and 2 are for explaining a mirror surface, FIGS. 3 to 6 are for manually applying an external force to change the curvature of the mirror surface, and FIGS. It changes the curvature.

FIG. 1 shows a plane mirror A, a convex mirror and a concave mirror C, which are flat, convex and concave with respect to an object D.
FIG. 2 shows the images of the object D reflected in the respective mirrors with the eyes E placed behind the object D, showing that the plane mirror A is the same size, the convex mirror B is reduced, and the concave mirror C is enlarged. .

Embodiment 1 This embodiment is shown in FIGS. 3 to 6, and is implemented as a concave mirror for shaving or the like which also becomes a concave surface and becomes a convex surface by an external force caused by pushing with a fingertip or the like. This is an example.

Reference numeral 1 in FIG. 3 is a mirror, and one surface of a substrate 2 which is a sheet of metal having elasticity is polished, or a mirror surface treatment is performed by plating or vapor deposition, and the mirror surface side is subjected to compression processing such as pressing. Finish concave or convex.

In this embodiment, as the substrate 2, a hard aluminum plate having a high reflectance is used, and a mirror-finished one is cut or punched into a circle, and the central portion is pressed into a concave or convex shape. It is a thing.

In addition, as the material of the substrate, an elastic synthetic resin plate or a strengthened glass plate can be used.

The substrate 2 may be mirror-finished on both sides depending on the application, and may be mirror-finished after the concave or convex surface is formed on the substrate 2 by thermoforming or compression processing such as pressing.

At this time, the amount of unevenness at the center of the substrate 2 is set to 800
Assuming that the mirror 1 is viewed at a distance of about 40 cm, the area of the image to be projected is about twice as large as that of the flat surface on the concave surface and about ½ of the flat surface on the convex surface.

If the curvature is reduced, the magnification on the concave surface is increased, and the magnification on the convex surface is decreased. However, if the curvature is excessively decreased, it may hinder the inversion of the unevenness.
Making it too small is not a good idea.

When an external force is applied by pushing with a fingertip or the like, the surface becomes a concave surface and becomes a convex surface, or when it bulges or protrudes (Peco can principle), a slight expansion and contraction occurs in the vicinity of the outer periphery of the substrate 2 and warps. Since it becomes a strain and the portion is easily broken, if it is formed into a corrugated (flare) 3 along the outer circumference of the substrate 2 as shown in FIG. 6, the corrugated 3 absorbs expansion and contraction of the outer periphery of the substrate. It is convenient for preventing distortion.

This mirror 1 becomes a concave surface when an external force is applied from the convex side with a fingertip or the like by adjusting the molding amount of the aluminum plate of the substrate 2 or the like, and the external force is applied so as to maintain the concave state. If removed, it can be manufactured so as to return to the original convex surface, but in this embodiment, a type that retains the concave surface state even if external force is removed is used.

Therefore, when the front surface is convex, it becomes a concave mirror when pressed from the front surface, and becomes a convex mirror when pressed from the back surface, and a slight force is required to press with this fingertip.

Reference numeral 4 in FIG. 3 is a mounting frame for the mirror 1.
A similar circular hole 6 is formed in the central portion of the front plate 8 from the rear surface open portion of the outer cylinder 7 in which the circular hole 6 is formed in the central portion of the front plate 5.
It is formed by inserting a holding cylinder 9 in which a corrugation is formed, and a corrugated (flare) 3 around the mirror 1 is fixed between the front plates 5 and 8 around the cylinders 7 and 9 and fixed. The front and rear surfaces of the central portion of the mirror 1 are exposed through the circular holes 6 and 6 on the front surface.

Before inserting the holding cylinder 9 into the outer cylinder 7, shaft holes 10 are bored in two side surfaces (on the diameter) of the outer cylinder 7, and fulcrum pins 11 and pin 11 tips are provided in the shaft holes 10. It is inserted so as to project in the outer peripheral direction of the side surface.

The stand 12 is formed by assembling two sheet metals in a U-shape so that the legs 13 and 14 intersect each other at both ends of the U-shape, and a pin hole is formed above the intersection. 1
The fulcrum pins 11 and 11 projectingly provided at two locations on the diameter of the outer cylinder 7 are fitted in the 1a and 11a.

A protrusion 15 is formed on one of the legs 13 and 14 below the intersection, and an arcuate elongated hole 16 into which the protrusion 15 is inserted is formed in the other leg, and the protrusion 15 is inserted into the arcuate elongated hole 16. The guides adjust the opening degrees of both legs 13 and 14, and the projections 15 come into contact with the ends of the long holes 16 to limit the opening degrees.

The present embodiment has the above-described structure, and in use, the legs 13 and 14 are opened to stand the stand 12, and the mirror surface having a convex front surface is pressed from the front surface with a fingertip for shaving. It is used as a concave mirror, etc., and when not in use, the front surface is made to be a convex mirror by pressing it with a fingertip from the back surface as appropriate.

Embodiment 2 This embodiment is shown in FIGS. 7 to 10, and shows an embodiment as a convex mirror such as a rearview mirror or a concave mirror such as a light ray reflecting mirror.

In this embodiment, by using a lever pin 30a and an inclined long hole 31 which will be described later, the cylinder 18 is mechanically concaved by sliding the cylinder 18 directly or manually on the rear box 21 by rotating it electrically or remotely. It also becomes a convex surface.

The mirror surface of the mirror 1 is a concave surface, and when an external force is applied from the convex surface side, the concave mirror surface becomes a convex surface, and when the external force is removed, the convex mirror surface returns to the original concave surface. It was done.

Reference numeral 17 shown in FIGS. 7 to 10 is a frame similar to the mounting frame 3 and is made of ABS resin, and the cylinder 18 is formed longer than the outer cylinder 7 of the above-mentioned embodiment. A circular hole 20 is formed.

The peripheral surface of the mirror 1 having a concave mirror surface is attached to the inner surface of the outer periphery of the hole 20 of the front plate 19 with the mirror surface facing the front plate 19 and fixed by welding or the like.

Reference numeral 21 designates a bowl-shaped rear box which is slidably inserted from the rear open portion of the frame 17 and has a closed rear surface. A groove-shaped pedestal mounting plate 23 is provided from the rear surface of the rear plate 22 of the rear box 21. It is fixed by the web 23a.

Then, through holes 25, 2 formed in the pedestal 24
5, the bearing plate 26 protruding from the base plate 26 in a U-shape
a and 26a are projected upward, and the bearing plates 26a and 26a are rotatably mounted on the groove-shaped pedestal mounting plate 23.
Fix with 7,27.

Reference numeral 28 is a push box whose tip presses the middle portion of the inner surface of the mirror 1 from the inside to the outside, and a circular tube portion 29 fixed to the base portion is fixed to the inner surface of the central portion of the rear face plate 22 of the rear box 21. It was done.

Reference numeral 30 denotes a lever. The lever pin 30a is inserted in the middle of the outer peripheral surface of the cylinder 18 of the frame 17, and the tip of the lever pin 30a is bored in the side peripheral portion of the rear box 21 so that the inclination is 5 degrees.
It is inserted into the slanted long hole 31 of the 100th position, and by rotating the lever 30, the cylinder 18 of the frame 17 is directly manually rotated and the tip of the lever pin 30a is inserted into the slanted long hole 31 of the rear box 21. The frame 17 is slid to the front and rear of the rear box 21 by guiding.

Reference numeral 32 denotes a guide pin which is inserted into the cylinder 18 on the opposite side of the lever pin 30a which is inserted into the middle of the side peripheral portion of the cylinder 18 of the frame 17 and whose inner end in the inner surface direction is the rear box 21.
The lever 30 is guided into an inclined long hole 33 that is inclined in the opposite direction to the inclined long hole 31 formed on the opposite side peripheral portion, and stabilizes the operation of the lever 30.

Alternatively, without directly rotating the cylinder 18 of the frame 17 directly by the lever 30, a rack or the like is provided on the outer periphery of the cylinder 18 and is remotely operated by a motor or the like (not shown) having a pinion fixed to the drive shaft. It is also possible to electrically rotate the cylinder 18.

In this embodiment, when the frame 17 is turned downward (clockwise) in FIG. 7 by the lever 30 or the like, the cylinder 18 in FIG.
Since it is guided and rotated inside, it comes to be deeply inserted into the rear box 21, and the push box 28 presses the inner surface of the mirror 1 from the inside to the outside, and the mirror 1 having the concave mirror surface becomes a convex mirror. .

On the contrary, when the frame 17 is turned upward (counterclockwise) in FIG. 7 by the lever 30 or the like, the cylinder 18 is inserted into the rear box 21 shallowly, the push box 28 is retracted, and the mirror 1 is moved. The inner surface is no longer pressed, and the mirror 1 returns to the concave mirror by the spring action.

When the lever pin 30a is located at the intermediate position in the vertical direction of the slanted elongated hole 31 when the frame 17 is rotated by the lever 30 or the like, it serves as an intermediate surface between the concave mirror and the convex mirror, that is, a plane mirror.

The inclination of the inclined elongated holes 31 and 33 is 5 /.
At the 100th position, move the lever 30 from the middle position to the slanted long hole 31
When it is moved downward along the direction, the push box 28 is moved against the elastic force of the mirror 1 formed into a concave surface to form a convex surface.

Further, when the mirror 1 is moved upward, the mirror 1 is made concave due to the movement of the push box 28 due to the elasticity of the mirror 1 returning to the concave surface, and there is not enough elasticity to move the lever 30 by the elasticity of the mirror 1. .

Therefore, the position of the lever 30 does not move unless the lever 30 is operated or the frame 17 is electrically rotated.

In the present embodiment, with the above-described structure, when the frame 17 is rotated counterclockwise and the mirror 1 is used as a concave mirror such as a reflecting mirror of light rays, the light source is placed in the focal point.

When changing the light condensing ratio, the lever 30 is manually operated directly or the frame 17 is electrically rotated to adjust the degree to which the cylinder 18 fits the rear box 21. The degree of pressing the inner surface of the mirror 1 by the push box 28 is adjusted to change the curvature.

When it is desired to magnify the image reflected on the mirror surface when it is used as a convex mirror such as a rearview mirror of a car, the frame 17 is electrically rotated counterclockwise by remote control so that the cylinder 18 is replaced by the rear box 21. The degree of fitting is adjusted to form a flat mirror or a concave mirror.

Then, it is difficult for the conventional convex mirror to discriminate the position of the object such as a groove along the road and the position of the vehicle, but it is easy to discriminate because the image is enlarged.

[0064]

The present invention having the above-mentioned structure can be used as a convex mirror, a concave mirror and a plane mirror with one mirror.
It is not necessary to manufacture and replace each type each time according to the purpose of use, and the labor can be saved and resources are not wasted.

As a concave mirror, the frame 1 is used to change the light collection rate.
7 can be manually or electrically rotated and adjusted to easily change the curvature of the concave mirror, it is not necessary to move the light source, the light collection ratio can be easily changed, and the power supply line can be broken. Absent.

When a convex mirror is used as a rearview mirror of a car, if the curvature is changed to a plane mirror or a concave mirror, the magnification becomes equal to or larger than that of the car. This makes it possible to prevent an accident such as derailment of a car groove or contact with another car or a building when the car is running backwards.

When used as a concave mirror for shaving,
A space for reversing is not necessary, there is no need to combine with a plane mirror as in the conventional case, and waste of resources can be saved.

[Brief description of drawings]

FIG. 1 is an explanatory view used for explaining a mirror surface, and is a side view of a main part with a partial cross section showing a positional relationship between an eye and an object and a plane mirror, a convex mirror, and a concave mirror.

FIG. 2 is a front view of FIG. 1 showing images reflected on a plane mirror, a convex mirror, and a concave mirror on the same paper surface for comparison.

FIG. 3 shows an embodiment in which a concave surface and a convex surface are formed by an external force caused by pushing with a fingertip or the like, and is a front view when the stand is opened.

FIG. 4 shows an embodiment in which a concave surface and a convex surface are formed by an external force generated by pushing with a fingertip or the like, and is a side view when the stand is closed.

FIG. 5 is an enlarged plan view of an essential part of a cross section of a stand intersection, (A) shows the stand when closed, (B) shows
Is when the stand is opened.

FIG. 6 is a perspective view of an essential part of an outer peripheral portion of a substrate.

FIG. 7 is a front view of an embodiment in which the surface is mechanically concave and convex.

FIG. 8 is a plan view showing an embodiment in which a surface is mechanically concave and convex.

FIG. 9 is a right side view of an embodiment in which a surface is mechanically concave and convex.

10 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 mirror 2 substrate 3 corrugated (flare) 4 mounting frame 5 front plate 6 circular hole 7 external cylinder 8 front plate 9 holding cylinder 10 shaft hole 11 fulcrum pin 12 stand 13, 14 leg 15 protrusion 16 arc-shaped long hole 17 frame 18 Cylindrical 19 Front plate 20 Circular hole 21 Rear box 22 Rear plate 23 Base mounting plate 23a Web 24 Base 25 Through hole 26 Base plate 26a Bearing plate 27 Shaft 28 Push box 29 Circular pipe part 30 Lever 30a Lever pin 31 Sloping long hole 32 Guide pin 33 slanted long hole

Claims (2)

[Claims] 1. An elastic metal plate, a resin plate, or a specially treated glass plate is provided as a substrate, and one or both surfaces thereof are mirror surfaces, and a mirror having a concave or convex surface is provided. A reflecting mirror provided with a frame that supports the periphery of the mirror, and an external force is applied from one or the other of the mirror surfaces of the mirror whose periphery is supported by the frame to form a convex surface or a concave surface, which is the reverse of the above, and whose curvature can be changed. 2. An elastic metal plate, a resin plate, or a specially treated glass plate is provided as a substrate, and one surface of the substrate is a mirror surface, and the mirror surface is a concave surface to apply an external force from the other surface to form a mirror surface. A rear box that is provided with a mirror that can return to a concave state even if it is a convex surface, and a cylindrical frame that fixes the mirror to the tip with the other surface facing inward, and is slidably inserted into the cylindrical frame After that, a push box that presses the other surface of the mirror is provided on the box, and a cylindrical mirror is rotated on the rear box to move the push box forward or backward with respect to the other surface of the mirror. .