JP2010183996A - Mirror - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mirror with high performance, which is changeable into a plane mirror, a concave mirror or a convex mirror. <P>SOLUTION: A mirror surface sheet 1 whose curvature is changeable is usable as a plane mirror, a concave mirror or a convex mirror by changing the curvature of the mirror surface sheet 1 using fluid such as gas and liquid, with the mirror surface sheet 1 being in a non-contact state. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a mirror used for shaving, cosmetic use, or appearance.

  Conventionally, mirrors are indispensable and various mirrors are used for shaving, makeup, fitting or dressing. As a mirror used for these applications, a plane mirror is generally used, but it may be necessary to use it as a concave mirror or a convex mirror.

  For this reason, mirrors that use both sides of a mirror and use one as a plane mirror and the other as a concave mirror, which are reversed according to the purpose, have been used in hotels for a long time.

JP 10-165273 A Japanese Utility Model Publication No. 4-16960 Japanese Utility Model Publication No. 4-1255763

  The three patent documents propose a mirror that can mechanically change the curvature of the mirror surface and thereby change it into a plane mirror, a concave mirror, and a convex mirror.

Among these, the variable mirror disclosed in Patent Document 1 operates an adjustment mechanism that combines a sliding shaft and a cam by rotating an operation handle at the center of a flexible mirror plate whose peripheral portion is supported by a frame. , Which are switched to a plane mirror, a concave mirror, and a convex mirror, and are used as hand mirrors, etc. Also, the mirrors of other patent documents 2 and 3 are different in structure, but the curvature of the mirror plate is made by a screw mechanism incorporated in the back surface portion. It is made to change and it is set as the same variable mirror.
In this way, when this curvature is changed using a sheet or plate-like mirror material, if a force is directly applied to the mirror plate, there is a slight difference in the change in curvature between the place where the force is applied and the place where it is not. There is a possibility that the mirror surface may be distorted, and since the curvature is mechanically changed, it may be necessary to change the curvature to some extent in steps, and it is difficult to select an arbitrary curvature.
In view of such a situation, the present invention intends to provide a mirror that can be used as a plane mirror, a concave mirror, or a convex mirror by skillfully using a gas or liquid fluid and changing a mirror surface sheet that can change a curved surface in a non-contact state. To do.

  In view of the situation as described above, the gist of the present invention is that it includes a mirror surface sheet capable of changing the curvature and a case body that holds the mirror surface sheet in an airtight or liquid-tight state. The present invention relates to a mirror characterized by incorporating means capable of changing the curvature of the mirror surface by operating the liquid-tight pressure in a non-contact manner with the mirror sheet, The mirror body and the back sheet, which can change the curvature, are held at the peripheral edge with an interval, and the mirror body is airtight or liquid-tight between the two sheets. The present invention relates to a mirror characterized in that a means capable of changing the curvature of the mirror surface by operating the pressure in a non-contact manner with the mirror sheet is attached to the back sheet.

  The present invention has the characteristics as described above, and the gas or liquid fluid is made airtight or liquid-tight by the mirror sheet and the case body or the mirror sheet and the back sheet, and the pressure in the gas-tight or liquid-tight state is The mirror surface sheet can be operated in a non-contact manner so that the curvature of the mirror surface can be changed. Therefore, the curvature of the curved surface portion can be smoothly changed over the entire surface of the mirror surface sheet. In addition, there is an advantage that a plane, a concave surface, and a convex surface can be arbitrarily and easily manipulated to a desired curved surface, and the structure can be simplified and the weight can be reduced.

It is sectional drawing which shows the 1st Example of this invention. It is sectional drawing which shows the 2nd Example of this invention. It is sectional drawing which shows the 3rd Example of this invention. It is sectional drawing which shows the 4th Example of this invention. It is a fragmentary sectional view which shows the principal part of the operation part in FIG. It is a partial expanded sectional view which shows a means for synchronizing the atmospheric pressure in FIG. 4 suitably.

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

  FIG. 1 shows a first embodiment of the present invention, in which 1 is a specular sheet, 2 is a case body, 3 is a peripheral portion of the case body, 4 is a means for changing the curvature of the case body 2 and the mirror surface, Are pipes through which air is passed and 5 is a hole provided in the peripheral edge 3. As shown in the drawing, the case main body 2 of the present invention has a tray-shaped cross section and uses the peripheral edge portion 3 to hold the specular sheet 1 in an airtight or liquid tight state. At this time, in order to prevent the mirror sheet 1 from being slack, for example, it is stretched in a state in which hearing is applied in the circumferential direction, and a concavo-convex fitting portion is provided on the peripheral edge portion 3 so that the peripheral edge of the sheet is sandwiched between them It is advantageous.

  In addition, as a means for changing the curvature of the curved surface, this figure shows an example of a piston system, which is composed of a piston 7 that moves in the cylinder 6. A cap portion 8 for fitting the opposite end is provided and is connected to the case body 2. In the drawing, 9 is a hook for stopping the piston 7 at a predetermined position, 10 is an O-ring provided on the piston 7, and 11 is a head of the piston 7.

  When used as a mirror in this example, the mirror sheet 1 in FIG. 1 is set in a flat shape so as to be a plane mirror in a steady state, and when it is used as a concave mirror, the head 11 is held and the arrow c Is pulled in the left direction in the figure to be engaged with the left hook 9. Thereby, the air in the case main body 2 is sucked and the pressure is reduced, and the mirror surface sheet 1 is changed to the lower dotted line position a to change the curvature into a concave shape and can be used as a concave mirror. On the other hand, when used as a convex mirror, the head 11 of the cylinder 7 is pushed to the right by the arrow c and is locked to the right hook 9. At this time, the mirror surface sheet 1 can be used as a predetermined convex mirror by changing the curvature of the mirror surface upward as shown in FIG.

  The mirror configured as described above makes fluid, that is, air in this case, airtight by the mirror surface sheet and the case body, and changes the pressure of this airtight state by the piston system, and operates without contact with the mirror surface sheet 1. Thus, the curvature of the curved surface portion can be smoothly changed over the entire surface of the mirror sheet 1, so that a mirror without distortion can be provided, and the plane, concave surface and convex surface of the structure can be provided with a desired curvature. There is an advantage that it can be operated arbitrarily and easily, and the structure can be simplified and the weight can be reduced.

  In addition, as the mirror surface sheet 1 capable of changing the curvature used in the present invention, for example, a sheet in which a mirror surface film by aluminum vapor deposition is provided on the inner surface of a transparent polyester film having a thickness of about 5 to 30 μm can be used. As the case body 2, a synthetic resin or light alloy molded product can be used, and as the pipe 4, a flexible synthetic resin pipe can be used.

  Further, in this example, a device comprising a cylinder 6 and a piston 7 is used as a piston system as means for changing the curvature of the mirror surface. However, these devices are airtight in an amount of air that can change the mirror surface sheet 1 to a desired curvature. An apparatus made of metal or synthetic resin can be used.

  Next, FIG. 2 shows a second embodiment of the present invention. The means for changing the curvature of the mirror and the mirror surface is basically the same as that of the first embodiment in the piston system. The valve is opened / closed depending on the position, and a means capable of appropriately synchronizing the airtight state with the atmospheric pressure is incorporated.

That is, in the same figure, as in the first embodiment, 1 is a specular sheet, 2 is a case main body, 3 is a peripheral portion, and the configuration of the mirror portion is the same as in FIG. In this figure, the piston system is emphasized, but the piston 7 is inserted into the cylinder 6, and the head 11 of the piston 7 is operated to send air from the cap portion 8 to the case body 2 through the pipe 4 and suck it. This is the same as in the case of FIG. 1, and the cylinder 6 is further extended to provide the adjusting portion 13. The adjusting portion 13 extended to the tip end side of the cylinder 6 is provided with two space portions 16 and 17 communicating with each other through a small hole. The former space 16 is connected to the cap portion 8 and the latter space portion 17. Communicates with the opening 18. Further, a rod 12 is extended at the tip of the cylinder 7 so as to come into contact with and separate from the ball 14 embedded in the space 17. The ball 14 is urged by a spring 15 so as to stop at a predetermined position on the cylinder 7 side.
In the state shown in the figure, the opening 18 of the space 17 and the inside of the case main body 2 communicate with each other, so that it is synchronized with atmospheric pressure. That is, in this state, the mirror surface sheet 1 is flat and is a plane mirror. When the mirror sheet 1 is used as a concave mirror, by pulling the piston 7 in the left direction of the arrow c, the ball 14 is pressure-bonded to the left side and shut off from the opening 18. The mirror sheet 1 becomes a concave mirror as indicated by a. In addition, the spring 15 at this time uses a spring having a spring force that keeps the ball 14 in close contact with the O-ring 10.
When used as a convex mirror, if the piston 7 is further pulled leftward from this state so that at least the O-ring 10 of the cylinder 7 exceeds the air hole 19, the inside of the cylinder 6 is synchronized with the atmospheric pressure, The inside of the case body 2 that communicates with this also becomes atmospheric pressure and returns to the plane mirror. When the piston 7 is pushed in the right direction of the arrow c from this state, the inside of the cylinder 6 sealed by the ball 14 is pressurized, and the case The mirror sheet 1 of the main body 2 is convex upward as shown in FIG. 2c and can be used as a convex mirror.
Although illustration is saved, in the case of this example as well, it is possible to use the hooking tool as shown in FIG.

With this configuration, the inside of the case main body 2 is synchronized with the atmospheric pressure in the state of the plane mirror, so that it is not affected by the expansion and contraction due to the rise and fall of the air due to changes in the temperature and the like. A flat state will be maintained.
In general, the mirror is often used as a plane mirror. Therefore, it is advantageous to maintain the flat state in this state, and when necessary, a concave mirror or a convex mirror is selected and used. It is convenient to use by changing the curvature of the mirror surface by the above means.

  FIG. 3 shows a third embodiment of the present invention. The arrangement of the case main body 2 in the embodiment shown in FIG. 1 is substantially changed so that it can be used for a plane mirror and a concave mirror. That is, the mirror in this example uses a case main body 2 made of a transparent material, the mirror surface sheet 1 is positioned inside this, and is made airtight or watertight by the peripheral edge portion 3 and used as a mirror through the case main body 2. .

  When the hole 5 of the case body 2 and the hole 19 of the cylinder 6 are connected by the pipe 4 and the piston 7 is pushed in the direction of the arrow d, the tip of the piston 7 advances beyond the vent hole 20 provided in the cylinder 6. However, the pressure of the air gradually increases, the air is pressurized through the pipe 4 and acts on the mirror surface 1 to increase this curvature, and can be used in the state of a concave mirror as shown in FIG.

In this example, as shown in the illustrated state, since the atmospheric pressure is constantly synchronized with the inside of the case main body 2 by the air holes 20, the plane mirror is not changed by the expansion and contraction of air. In the figure, 9 is a hook for stopping the head 11 of the piston 7 at a predetermined position, and 10 is an O-ring.
In the case of the third embodiment, only a change between a plane mirror and a concave mirror is made. However, in a normal mirror, this may be sufficient, and a mechanism for the mirror part and means for changing the curvature of the piston type mirror surface are also available. This simplifies and further reduces the weight. In addition, since the mirror is covered with the transparent material of the case body 2, the mirror does not get scratched, and when it becomes dirty during use, it can be easily wiped off and can be used conveniently.

Next, FIGS. 4 to 6 show a fourth embodiment of the present invention, which corresponds to the embodiment of claims 4 and 5 and is an example of a mirror that can be changed into a plane mirror and a concave mirror. .
In FIG. 4, the mirror sheet 1 and the back sheet 21, each of which can change the curvature, are held in the case body 2 at a predetermined interval and are kept airtight or watertight at the peripheral edge 3 and used as a mirror body. At this time, at least the mirror surface sheet 1 and preferably the back sheet 21 are preferably held under tension so that no slack occurs. Then, an operating rod 22 having a swelled head is fixed to the center of the back sheet 21, and the back sheet 22 is bent downward by pulling the operating rod 22 in the direction of the arrow d to change the pressure in the hermetic chamber. In this way, the mirror sheet 1 on the surface is synchronized to form a concave curved surface downward so that it can be used as a concave mirror.

  As a means that can change the pressure in the airtight or watertight state in this example, a slide member 23 as shown in FIG. That is, the slide member 23 is provided with a gripping portion 25 and a slide groove 27 inclined substantially in the left direction in the figure in order to penetrate the operating rod 22 at one end of a frame member 24 having a substantially L-shaped cross section. A passage hole 28 is provided at a location corresponding to the rod 22. In addition, one end of a spring 26 is fixed to a stop plate 29 provided at a predetermined position of the frame member 24, and in this state, it is assembled as shown in FIG. 4 so that the grip portion 25 can be gripped and slid in the direction of arrow e. It has become.

  In this example, as shown in FIGS. 4 and 6, the valve 30 and the spring 31 that maintains the state can be synchronized with the atmospheric pressure by opening and closing the valve.

  In the case of using the mirror of the fourth embodiment, as shown in FIG. 4, when the grasping portion 25 is pinched with the fingertip and pulled to the right of the arrow e, the operation rod 22 is gradually guided to the slide groove 27 by the guide of the groove. Is pulled as shown by an arrow d, and the back sheet 21 is projected downward. Then, pressure increases in the space with the mirror surface sheet 1, and the mirror surface sheet 1 exhibits a state of a concave mirror without contact while the valve 30 of FIG. 6 is sealed against the spring 26. Therefore, it can be used as a concave mirror in this state, and in order to return to the original state of FIG. 4, it can be used as a plane mirror by releasing the gripping portion 25 and returning the slide member.

  In this state, as shown in FIG. 6, the valve 30 is held by the spring 31 in a state where there is a small gap. Therefore, the valve 30 communicates with air and is not affected by the expansion and contraction of air in synchronism with atmospheric pressure.

  The fourth embodiment described with reference to FIGS. 4 to 6 is used by changing to a plane mirror and a concave mirror. However, by changing the slide mechanism, the mirror can be further used as a convex mirror. It can also be used as a mirror of a combination of a plane mirror and a convex mirror.

  In addition, the sliding mechanism in this case can be omitted, and the bar 22 can be directly gripped with a finger so as to appear and change so that the curvature of the back sheet 21 can be changed.

  Although the present invention has been described based on the illustrated examples, the present invention is not limited to these embodiments, and various modifications can be made. As the fluid for changing the curvature of the mirror surface sheet 1 in a non-contact manner, it is possible to use other gases or liquids besides the above-mentioned air. In particular, when a liquid is used, consideration should be given to the sealing property of the liquid. desirable.

1 Mirror surface sheet 2 Case body 3 Peripheral edge 4 Pipe
5 hole 6 cylinder 7 piston 8 cap part 9 hook 10 O-ring 11 head 12 bar 13 adjustment part 14 ball 15 spring 16 space part 17 space part 18 opening part 19 air hole 20 air hole 21 back sheet 22 actuating rod 23 Slide member 24 Frame member 25 Grasping part 26 Spring 27 Slide groove 28 Passing hole 29 Stop plate 30 Valve 31 Spring

Claims (5)

  A mirror surface sheet capable of changing the curvature, and a case main body that holds the mirror surface sheet in an airtight or liquid-tight state. The airtight or liquid-tight pressure of the case body is operated in a non-contact manner with the mirror surface sheet. And a mirror incorporating a means capable of changing the curvature of the mirror surface.   2. The mirror according to claim 1, wherein the means for operating the mirror surface sheet is a piston system that is movable in a cylinder. 3. The mirror according to claim 2, further comprising means for opening and closing the valve according to the position of the piston in the piston system and capable of appropriately synchronizing the airtight state with the atmospheric pressure.   The mirror body and the back sheet, each of which can change the curvature, are held at the peripheral edge with an interval, and the mirror body is airtight or liquidtight between the two sheets. The airtight or liquidtight state of the mirror body A mirror, characterized in that means for changing the curvature of the mirror surface by operating the pressure of the mirror surface without contact with the mirror sheet is attached to the back sheet. 5. The mirror according to claim 4, wherein means for allowing the airtight state to be appropriately synchronized with the atmospheric pressure by opening and closing the valve is incorporated in the peripheral portion.

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