JP4918116B2 - Inspection mirror - Google Patents

Description

  The present invention relates to an inspection mirror for inspecting the inside of a narrow space that cannot be directly observed.

Conventionally, many inspection mirrors have been developed for inspecting the inside of narrow spaces that cannot be directly observed, particularly the inside of piping. When observing the inside of piping, etc., it is extremely difficult to see directly, so an inspection mirror with a mirror body attached to the tip of the rod is used, and several inventions and devices that improve this inspection mirror are disclosed. ing.
Patent Document 1 discloses an invention relating to an inspection mirror having a light source under the name “inspection mirror”.

The invention described in Patent Document 1 includes a substantially rod-like shaft that can be expanded and contracted, a mirror body that is attached to the tip of the shaft so that the orientation of the mirror surface can be adjusted, a bracket attached to the shaft, and a detachable attachment to the bracket And a light source attached to the head.
According to the invention described in Patent Document 1 having the above configuration, after adjusting the direction of the mirror surface and attaching and turning on the light source, for example, when inserted into a drain pipe or the like, the light of the light source irradiates the inside of the drain pipe. The drain pipe can be easily inspected, and since the light source can be attached to and detached from the bracket, it is convenient because the light source can be removed from the bracket when the light source is not used. Since the direction of the mirror surface of the body can be adjusted, the direction of the mirror surface of the mirror body can be appropriately adjusted with respect to the shaft in accordance with the situation of the drain pipe to be inspected, so that the inspection work in the drain pipe can be facilitated.

Patent Document 2 discloses an invention relating to an inspection mirror for sewage equipment under the name of “inspection mirror for sewage equipment”.
In the invention described in Patent Document 2, an inspection mirror in which a mirror portion having an inclination of about 45 ° with respect to the handle is pivotally supported or fixed at the lower end of the extendable handle is inserted into an inspection cylinder of a sewage facility. In the inspection mirror for sewage equipment that visually inspects the inside of the water pipe, the lower end of the handle is extended beyond the lower end of the mirror part, and a support rod that contacts the bottom part of the sewage equipment is provided in parallel with the mirror part. It is what.
According to the invention described in Patent Document 2 having the above configuration, since the support rod arranged in parallel with the mirror portion is provided at the lower end of the handle of the inspection mirror for sewage equipment, it is possible to eliminate the problems in the conventional inspection mirror. In addition, the inspection mirror can be inexpensive, lightweight, and extremely convenient. In particular, in the case of a merging type inspection cylinder, the direction of the mirror portion can be rotated using the support rod as a pivot, which makes the handling very easy.

Patent Document 3 discloses a device relating to an instrument used for observing a sewer pipe under the name “observer such as a sewer pipe”.
The device described in Patent Document 3 is connected to a main body connected with an operating rod extending upward, a light bulb attached to the main body and adapted to irradiate substantially horizontally, and connected to the main body. And a reflecting mirror that reflects light coming from the front upward.
According to the device described in Patent Document 3 having the above-described configuration, it is possible to observe the inner surface of the sewage pipe by operating very easily, and the labor and time can be significantly reduced.
Further, according to the device described in Patent Document 3, it is possible to easily inspect the floor under the building, the back of the ceiling, and the like.

Japanese Patent Laid-Open No. 2001-100247 Japanese Patent Application Laid-Open No. 9-100247 Japanese Utility Model Sho 56-83712

However, in the invention disclosed in Patent Document 1, it is necessary for the operator to always hold and support the shaft during inspection, and there is a problem that the burden on the operator is large when continuing inspection work for a long time. .
In addition, in the inspection mirror disclosed in Patent Document 1, since the light source is provided on the shaft, for example, when trying to check the roller and the belt back side portion inside the belt conveyor using this inspection mirror, There was also a problem that the object to be inspected could not be brightly illuminated.

In addition, since the invention described in Patent Document 2 does not include a light source, it is complicated to separately insert a light source into the sewage facility when performing inspection work.
Furthermore, in the invention described in Patent Document 2, since the mirror mounting angle with respect to the handle is fixed at 45 ° , it is necessary to use a small mirror in order to insert the mirror in a narrow space such as the inside of the belt conveyor. there were. In this case, the area that can be inspected by a single operation becomes narrow, and there is a problem that it is difficult to improve the work efficiency of the inspection operation of the belt conveyor.

In the device described in Patent Document 3, as in the invention described in Patent Document 1, since the light source is attached to the operation rod, it is considered that the back side of the sewer pipe can be brightly illuminated. When inspecting the inside of the belt, there is a problem that the inspection target such as the back side of the roller or the belt cannot be brightly illuminated.
Also, in the case of the device described in Patent Document 3, as in the invention described in Patent Document 2, the reflecting mirror is fixed to the operation rod in an inclined state at an angle of about 45 ° with respect to the leg portion. Therefore, in order to insert the reflecting mirror into the gap between the rollers of the narrow belt conveyor, it is necessary to make the reflecting mirror small, and there is a problem that it is difficult to improve the work efficiency of the inspection work.
In addition, since the light source is mounted on the upper surface side of the reflector, the external dimensions of the reflector and the light source when viewed from the longitudinal direction of the leg portion are increased, and the device according to Patent Document 3 is smoothly moved within a narrow belt conveyor. There was a problem that it was difficult to do.
For this reason, the idea which concerns on patent document 3 had the subject that it was not suitable for the check work of the narrow inside of a belt conveyor.

  The present invention has been made in response to such a conventional situation, and an object of the present invention is to allow a large mirror body to be easily put in and out of a narrow space, and to minimize blurring of the mirror body in this narrow space. An object of the present invention is to provide an inspection mirror capable of efficiently observing a wide range of objects to be inspected by rotating the mirror body around the axis of the eyelid.

In order to achieve the above object, the inspection mirror according to the first aspect of the present invention is an inspection mirror used for observing and inspecting the upper surface side inside a narrow space extending in the horizontal direction, and is flat and has a short side. and specular body portrait with a long side and a main rod for enabling remote operation of the mirror body, provided in the vicinity of the end of the main rod, the axial direction while the mirror surface of the mirror body Allegiance a Shu杆A support device for supporting and fixing the mirror body so as to be perpendicular to the light source, a light source for illuminating the object to be inspected on the side of the mirror body away from the main fence, and a pivot provided at the end of the main lamp If, it has a light emitting means for emitting light source, mirror body, the short side of the mirror body is disposed on the side where the main rod is disposed, support device, a first support for gripping or clamping the main rod This is formed separately from the first support material and the mirror surface of the mirror body is perpendicular to the axial direction while looking up at the main shaft. And a second support member for supporting and fixing the mirror surface body so as to form a mirror, and the second support member is pivotally mounted on the first support member and variably supports and fixes the elevation angle of the mirror surface with respect to the main surface. It is what.
In the invention having the above-described configuration, the mirror surface body cannot be directly observed by the operator, for example, has an action of projecting the state inside, particularly the upper surface side, from a gap formed between the rollers of the belt conveyor. .
In addition, the light source attached to the end of the mirror body in the direction away from the main fence has the effect of brightly illuminating the object to be inspected arranged just above the mirror surface.
Further, the main rod has an effect of enabling remote operation of the mirror body supported and fixed by the support tool.
And a support has the effect | action of supporting and fixing the mirror surface body provided with the light source to the main frame. At this time, it is said that the mirror surface of the specular body is viewed from the longitudinal direction of the main rod by minimizing the thickness of the specular body while looking up at the main rod and being perpendicular to the axial direction of the main rod. Has an effect.
In addition, by providing the light source at the end of the mirror body in a direction away from the main casing, the external dimensions of the mirror body and the light source viewed from the longitudinal direction of the main casing can be minimized.
In addition, the pivot has a function of making the movement smooth when the main rod is rotated about its axis, and a function of adjusting the elevation angle of the mirror body.
The light emitting means has an effect of supplying electric power for causing the light source to emit light.
Furthermore, by changing the elevation angle of the mirror surface with respect to the main rod, more specifically, by setting the elevation angle of the mirror body with respect to the main rod larger than 90 °, without changing the support angle with respect to the installation surface of the main rod, It has the effect of widening the area of the object to be inspected that is displayed on the mirror surface.
Moreover, it has the effect | action of arrange | positioning a main rod and a mirror body so that it may mutually oppose. In this case, it has the effect | action of making the external dimension of the inspection mirror of Claim 1 small.

An inspection mirror according to a second aspect of the invention is the inspection mirror according to the first aspect, wherein the support is provided so as to be slidable on the main shaft in the axial direction thereof.
In addition to the same operation as that of the first aspect of the present invention, the invention having the above configuration has an operation of changing the mounting position of the mirror body on the main shaft.

An inspection mirror according to a third aspect of the present invention is the inspection mirror according to the first or second aspect , wherein the main lamp is lighted at the end of the side where the support is not provided or in the vicinity thereof. And a switch for switching off the light.
In addition to the same operation as that of the first or second aspect of the invention, the light source is turned on and off while the mirror body provided with the light source is inserted into the gap to be inspected. It has the effect of enabling switching.

According to the invention of claim 1 of the present invention, the mirror body is supported and fixed perpendicularly to the axial direction of the main rod while looking up at the main rod, and at the same time, at the end of the mirror surface on the side away from the main rod. By providing the light source, it is possible to minimize the thickness of the mirror body and the light source when viewed from the longitudinal direction of the main shaft. For this reason, it has the effect that insertion of the mirror surface body in a narrow space can be facilitated.
As a result, according to the inspection mirror according to the first aspect, since it is possible to use a large vertically long mirror body, it is possible to easily observe a wide range of inspection objects at once using the large mirror body. It has the effect of being able to. As a result, the work efficiency of the inspection work can be improved.
Moreover, in invention of Claim 1, it has the effect that a main rod can be supported by a point by providing a pivot in the edge part of a main rod. As a result, there is an effect that the main shaft can be smoothly rotated with its central axis as the base axis. Therefore, according to the inspection mirror according to the first aspect, it is possible to reduce the burden on the operator when operating and supporting the inspection mirror. Further, when the main shaft is rotated about its central axis, the mirror surface smoothly rotates, so that the image to be inspected projected on the mirror surface hardly fluctuates. In addition, the elevation angle of the mirror body can be adjusted using the pivot. For this reason, the operator can continuously observe the entire range in which the mirror body can move in the circumferential direction by rotating it around the main shaft and in the vertical direction by tilting. Have As a result, there is an effect that the number of times of moving the inspection mirror according to claim 1 can be reduced when observing the inspection target within a certain range.
In addition, by providing a light source at the end of the mirror body on the side away from the main fence, it is possible to reliably prevent the light source itself from being reflected on the mirror surface when the operator performs an inspection operation. . Further, in this case, there is an effect that the inspection target opposite to the mirror surface can be brightly illuminated.
Therefore, according to the first aspect of the present invention, for example, when the belt conveyor is installed near the operator's feet, the work efficiency of the inspection work on the back side of the conveyor belt can be greatly improved. This has the effect of reducing the burden on the worker at that time.
Further, in the invention described in claim 1, since the elevation angle of the mirror surface of the mirror surface with respect to the main surface can be changed, for example, when the elevation angle is larger than 90 °, the main surface is not inclined and is far from the main surface. There is an effect that the image of the inspection target at the position can be projected onto the mirror surface. As a result, the area that can be inspected by the invention of claim 1 can be widened.
For example, when the elevation angle of the mirror body with respect to the main rod is smaller than 90 °, the mirror body can be folded to the main rod side. As a result, when the invention according to claim 1 is not used, the external dimensions can be reduced to form a compact form. Therefore, even when a large mirror body is attached to the main frame, there is an effect that it can be stored compactly.

In addition to the same effect as that of the invention described in claim 1, the invention described in claim 2 of the present invention enables the height of the mirror body from the installation surface by enabling the support tool to slide in the axial direction of the main shaft. It has the effect that it can be changed.
In this case, when there are a plurality of narrow places which are inspected portions and the heights from the respective installation surfaces are different, there is an effect that all the narrow places can be inspected with one kind of inspection mirror.
Therefore, the versatility of the invention of claim 2 can be improved.

The invention according to claim 3, in addition to the same effect as the invention described in claim 1 or claim 2, a switch for switching off the lighting of the light source to the end on the side of the pivot of the main lever is not provided, That is, by providing it in the main area near the operator's hand, there is an effect that the switching operation of turning on and off the light source can be simplified.
Further, since the light source can be turned on only when the inspection work is performed, it is possible to save power for emitting the light source.

It is a perspective view which shows the external appearance of the inspection mirror which concerns on Example 1 of this invention. (A) is a side view which shows the use condition of the inspection mirror which concerns on Example 1 of this invention, (b), (c) is a top view which shows both the use condition of the inspection mirror which concerns on Example 1 . It is sectional drawing at the time of use of the inspection mirror which concerns on Example 1 of this invention. It is a perspective view which shows the external appearance of the inspection mirror which concerns on Example 2 of this invention. It is a side view of the inspection mirror which concerns on Example 3 of this invention.

  The inspection mirror according to the embodiment of the present invention will be described in detail below with reference to examples.

The inspection mirror according to the first embodiment and a method for using the inspection mirror will be described in detail with reference to FIGS.
FIG. 1 is a perspective view showing an appearance of an inspection mirror according to Embodiment 1 of the present invention.
As shown in FIG. 1, in the inspection mirror 1 a according to the first embodiment, a support tool 4 is provided around an elongated rod-shaped main rod 2, and the support tool 4 is perpendicular to the axial direction of the main rod 2 (substantially approximately). The flat mirror body 3 is placed on a pair of flat support pieces 4b, 4b provided at the upper ends of the arms 4a, 4a extending in the vertical direction and fixed by bolts 5. .
The mirror body 3 includes a mirror body body 3a having a mirror surface 3c and a frame body 3b for holding the mirror body 3c. The support piece 4b formed on the arm 4a and the frame body 3b of the mirror body 3 are formed by the bolt 5 described above. It is fixed. For example, as shown in FIG. 1 or FIG. 3 to be described later, the support 4 is formed by cutting a metal flat plate into a substantially strip shape while providing a portion to be a support piece 4b, and folding the flat plate into two. The mirror body 3 is supported by support pieces 4b and 4b formed by bending a flat plate at the upper end of an arm 4a made of a pair of flat plates extending in a direction away from the main rod 2. It is configured to support and fix.
The arms 4 a made of a pair of flat plate members are fixed by bolts 6, and an adjustment screw 8 is provided separately from the bolts 6 so that the degree of binding of the main rod 2 by the support 4 can be adjusted. Good. When the bolts 5 and 6 and the adjusting screw 8 are attached, a washer 7 may be provided.
Further, the end of the mirror body 3 on the side away from the main fence 2 is provided with a light source 10 so that the surface to be inspected opposite to the mirror surface 3c can be illuminated brightly.
At the lower end of the main rod 2, there is provided a pivot 9 that is tapered in a conical shape toward the tip, and the tip 9a is rounded.
The light source 10 is provided with support members 12 and 12 for holding a light emitter 11 that emits light. The support members 12 and 12 are attached to a frame 3b of the mirror body 3 by screws 13 via a connecting plate 24. It is fixed. Further, a bolt 5 washer may also be provided when the support member 12 is fixed by the screw 13.

In the inspection mirror 1a according to the first embodiment, the case where the light source 10 is provided separately from the mirror body 3 is described as an example. However, the light source 10 is embedded in the frame body 3b of the mirror body 3. May be. In this case, the configuration of the support member 12 and the connecting plate 24 that support the light emitter 11 can be omitted.
Although not shown in FIG. 1, the inspection mirror 1a according to the first embodiment includes a battery and a wiring for supplying power to the light source 10 inside the main shaft 2 or inside the frame 3b. The light source 10 can be turned on and off by a switch (not shown) provided near the light source 10. Alternatively, in the inspection mirror 1a according to the first embodiment, as illustrated in FIG. 1, a switch 14 that switches between turning on and off the light source 10 may be provided at the upper end of the main fence 2. That is, the switch 14 may be provided at the end of the main shaft 2 on the side where the pivot 9 is not provided.

According to the inspection mirror 1a according to the first embodiment, the tip 9a of the pivot 9 is brought into contact with an installation surface (not shown) to make the main rod 2 stand upright, and the main rod 2 is rotated with its axial direction as the base axis. Thus, for example, a part of the mirror body 3 can be inserted into a narrow space such as a gap formed between the rollers of the belt conveyor.
In this case, the operator can inspect the image on the mirror surface 3c of the mirror body 3 and inspect the upper surface of the belt conveyor, which cannot be directly observed, particularly.
At this time, even if the light emitter 11 of the light source 10 emits light, the light emitter 11 is not reflected on the mirror surface 3c, so that the operator can perform the inspection work smoothly.

Here, a method of using the inspection mirror 1a according to the first embodiment will be described in detail with reference to FIGS.
FIG. 2A is a side view showing the usage state of the inspection mirror according to the first embodiment of the present invention, and FIGS. 2B and 2C are both plan views showing the usage state of the inspection mirror according to the first embodiment. It is. In addition, the same code | symbol is attached | subjected about the part same as what was described in FIG. 1, and the description about the structure is abbreviate | omitted.
The inspection mirror 1a according to the first embodiment includes, for example, a gap 18 formed between the rollers 17 of the belt conveyor 15 and a gap formed below the belt 16 of the belt conveyor 15 as shown in FIG. 18, the mirror body 3 attached to the main rod 2 via the support 4 is inserted, and the back surface side (inner surface) of the belt 16 of the belt conveyor 15 that cannot be directly observed by an operator standing on the inspection scaffold 19. Side) and the surface side (outer surface side).

Then, in order to insert the mirror body 3 of the inspection mirror 1a according to the first embodiment into the gap 18 formed on the lower side of the belt 16, the operator needs to close the belt conveyor 15 in need of inspection, as shown in FIG. (B) Standing at the position indicated by the mark of the footprint in the inside, the tip 9a of the pivot 9 is brought into contact with the inspection scaffold 19, which is the mounting surface, and the main rod 2 is held in an upright state. The main frame 2 is rotated about the axis 2 and the mirror body 3 supported and fixed via the support 4 is rotated in the direction indicated by the symbol A in FIG. What is necessary is just to insert in the clearance gap 18 of the side.
In this way, by keeping the direction in which the gap 18 of the belt conveyor 15 widens and the plane direction of the mirror body 3 parallel (including the concept of substantially parallel), the large mirror body 3 can be formed in the narrow gap 18 with a simple operation. Can be inserted smoothly.
In this case, the operator does not have to worry about whether the mirror body 3 collides with the roller 17 of the belt conveyor 15 when inserting the mirror body 3 into the lower gap 18 of the belt 16. The mirror body 3 can be quickly inserted into the inside. By inserting the mirror body 3 into the gap 18 on the lower side of the belt 16, the surface side (outer surface side) of the belt 16 can be inspected.
FIG. 2 shows a state in which the mirror body 3 is inserted into the lower gap 18 of the belt 16, but when inspecting and observing the back surface side (inner surface side) of the belt 16, the rollers 17 of the belt conveyor 15 are used. The mirror body 3 may be inserted into a gap 18 formed between the roller 17 and the roller 17.
As a result, the time required for the inspection work can be shortened.

In addition, when inspecting the belt conveyor 15 using the inspection mirror 1a according to the first embodiment, the operator reflects the state of the back side of the belt 16 on the mirror body 3 and observes it. For this reason, about 2/3 of the mirror surface 3c is inserted into the gap 18 of the belt conveyor 15 during the inspection work so that the operator can surely see the mirror surface 3c of the mirror body 3, and the remaining 3 minutes. The first mirror surface 3 c needs to be protruded from the gap 18.
Further, at this time, for example, the distance from the back surface of the belt 16 of the belt conveyor 15 or the lower surface of the roller 17 to the mirror surface body 3c of the mirror body 3 to be inspected is set to the roller 17 below the belt conveyor 15. By separating as much as possible without contacting, the inspection mirror 1a according to the first embodiment has an effect that the inspection target in a wider range can be observed.

Furthermore, after inserting the mirror body 3 at the position indicated by the broken line in FIG. 2B, the mirror body 3 is rotated left and right with the main shaft 2 as a base axis, so that only at the place where the mirror body 3 is inserted. In addition, it is possible to observe the state of the inspection target in the vicinity.
As a result, the work efficiency of the inspection work can be improved.
Particularly in this case, since the pivot is provided at the lower end of the main rod 2, the movement of the mirror body 3 can be made smooth, and vibration can be prevented from occurring during the rotation. It is possible to prevent the image appearing on the body 3c from blurring.
As a result, even when the mirror body 3 is rotated about the central axis of the main shaft 2, the image projected on the mirror surface 3c is not blurred, so that the operator can observe the state of the inspection target in a wide range. When it does, it has the effect that an oversight of a fault location can be prevented.
Accordingly, there is an effect that the accuracy of the inspection work can be improved.

The mechanism by which the upper side of the narrow space can be observed over a wide range by the inspection mirror 1a according to the first embodiment will be described in more detail with reference to FIG.
FIG. 3 is a cross-sectional view of the inspection mirror according to the first embodiment of the present invention in use. The same parts as those described in FIGS. 1 to 3 are denoted by the same reference numerals, and description of the configuration is omitted.
When the mirror body 3 is inserted into the gap 18 between the rollers 17 and 17 of the belt conveyor 15 with the light source 10 turned on as shown in FIG. 3, the mirror surface 3 c of the mirror body 3 is placed on the back side of the belt 16 of the belt conveyor 15. The belt 16 is arranged in a state parallel to the planar direction of the belt 16 (including a concept of being substantially parallel).
At this time, the light source 10 is provided in the vicinity of the end of the mirror body 3, so that the light emitted from the light source 10 does not directly face the mirror surface 3c, but goes to the back side of the belt conveyor 15 to be inspected. That is, it diffuses toward the opposite side of the mirror surface 3c.
In the inspection mirror 1a according to the first embodiment, a reflector (not shown) is provided on the light emitter 11 of the light source 10 so that the light from the light source 10 does not diffuse below the gap 18 that does not need to be brightly illuminated. The light emitted from the light source 10 is emitted to the opposite side of the mirror surface 3c to be inspected.

The light emitted from the light source 10 to the back side of the belt 16 of the belt conveyor 15 is diffused while being repeatedly reflected between the back side of the belt 16 to be inspected and the roller 17 and the mirror surface 3c of the mirror body 3. To go.
And the operator who stands by holding the main rod 2 of the inspection mirror 1a according to the first embodiment and holding the main rod 2 in an upright state looks into the mirror surface 3c of the mirror body 3 from above. Thus, it is possible to indirectly observe the state inside the belt conveyor 15 on the opposite side of the mirror surface 3c.
In addition, the closer the distance between the mirror body 3 and the inspection target, the narrower the inspection target area that the operator can observe.
For this reason, in order to observe the inspection target in a wider area, the distance between the mirror surface 3c and the back side of the roller 17 or the belt 16 disposed above the mirror surface 3c is set so that the mirror body 3 is located below the belt conveyor 15. As long as it does not contact the roller 17, it is desirable to keep it as far away as possible.

Further, from this state, the main rod 2 of the inspection mirror 1a according to the first embodiment is slightly tilted toward the belt conveyor 15, that is, indicated by the symbol B in FIG. By pushing down the main rod 2 in the direction and moving the mirror body 3 to the position indicated by the broken line in the figure, the operator can observe the state of the inspection target behind the gap 18. Become.
Then, while maintaining the inclination of the main rod 2 of the inspection mirror 1a, the main rod 2 is rotated in the left-right direction with the tip 9a of the pivot 9 as the base point, so that the inspection target in a wider area can be changed to the first embodiment. It becomes possible to observe without moving the inspection mirror 1a.
As a result, when inspecting an object to be inspected in a predetermined area, it is not necessary to frequently move the inspection mirror 1a according to the first embodiment, so that the work efficiency of the inspection work can be improved.
Furthermore, since the operator can continuously observe a wide range using the inspection mirror 1a according to the first embodiment, the risk of overlooking a defective portion is reduced, and the inspection accuracy can be increased. .
That is, according to the inspection mirror 1a according to the first embodiment, the upper surface side inside the narrow space that cannot be directly observed by the operator, for example, the inner side or the lower side of the belt conveyor 15 is efficiently observed and inspected. It has the effect of being able to.

Further, as described above, the support 4 is provided around the main rod 2, and the arms 4 a made of a pair of flat plate members are fixed with the bolts 6, and the adjustment screw 8 is used to fix the main rod 2 with the support 4. Since the degree of binding can be adjusted, there is an effect that the distance from the tip of the pivot 9 to the mirror surface 3c in the inspection mirror 1a can be easily changed.
That is, when the distance from the inspection scaffold 19 which is the installation surface of the pivot 9 to the gap 18 where the object to be inspected is different, the support 4 is slid to the optimal position on the main rod 2. Since the body 3 can be arrange | positioned, it has the effect that the versatility of the inspection mirror 1a which concerns on Example 1 can be improved.
That is, according to the inspection mirror 1a according to the first embodiment, as described above, the mirror body is provided in the other gap 18 formed between the belt 16 and the belt 16 of the belt conveyor 15 shown in FIG. 3 can be inserted, and the back side of the belt 16 disposed above the belt conveyor 15 can be inspected.

  Further, when the switch 14 for switching between the point of the light source 10 and the light source 10 is provided at the upper end of the main shaft 2, the operator himself / herself during the inspection work using the inspection mirror 1a according to the first embodiment. Since the light source 10 can be switched off and on at hand, power for causing the light source 10 to emit light can be saved. In addition, the operability of the inspection mirror 1a according to the first embodiment can be improved.

An inspection mirror according to a second embodiment of the present invention will be described in detail with reference to FIG.
The inspection mirror 1b according to the second embodiment has substantially the same configuration as the inspection mirror 1a according to the first embodiment, but the configuration of the support 4 is different from the inspection mirror 1a according to the first embodiment.
FIG. 4 is a perspective view showing an appearance of an inspection mirror according to the second embodiment of the present invention. The same parts as those described in FIGS. 1 to 3 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 4, the support 20 of the inspection mirror 1 b according to the second embodiment is configured such that a portion that grips the main rod 2 includes a plurality of parts 20 a to 20 c.
More specifically, the portion that holds the main rod 2 in the support tool 20 is formed by a combination of the parts 20a and 20b and the parts 20a and 20c, and each uses a bolt 6 and a washer 7. Is fixed.
The inspection mirror 1b according to the second embodiment having the above-described configuration has the same operation and effect as the inspection mirror 1a according to the first embodiment, and the support tool 20 includes a plurality of parts 20a to 20c. The shape of ˜20c can be simplified.
As a result, it has the effect that the manufacturing process of the support tool 20 can be simplified.

An inspection mirror according to Embodiment 3 of the present invention will be described in detail with reference to FIG.
In addition to the same configuration as the inspection mirror 1a according to the first embodiment, the inspection mirror according to the third embodiment is configured such that the elevation angle of the mirror body 3 with respect to the main rod 2 can be changed.
FIG. 5 is a side view of the inspection mirror according to the third embodiment of the present invention. The same parts as those described in FIGS. 1 to 3 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 5, the support 22 of the inspection mirror 1c according to the third embodiment is configured in such a manner that, for example, a metal flat plate is folded in half and the main rod 2 is gripped by the curved portion. The second support member 22b is configured separately from the first support member 22a and has the same action as the arm 4a of the support tool 4 in the inspection mirror 1a according to the first embodiment described above. They are connected by bolts 23.
That is, in the support tool 22, the second support material 22b for supporting and fixing the mirror body 3 to the first support material 22a sandwiching the main rod 2 is pivotally arranged with the bolt 23 as a pivot.
In addition, when fixing the 1st support material 22a and the 2nd support material 22b with the volt | bolt 23, you may use the washer 7. FIG.

Thus, according to the inspection mirror 1c according to the third embodiment, the elevation angle of the mirror body 3 with respect to the main rod 2 can be changed.
Then, for example, when the elevation angle of the mirror body 3 with respect to the main rod 2 is set to be larger than 90 ° as indicated by a broken line in FIG. 5, the inspection mirrors 1a and 1b according to the first and second embodiments are used. In addition, the operator can easily observe the back side of the gap 18 of the belt conveyor 15 without tilting the main shaft 2. In this case, the main rod 2 can be rotated left and right with the tip 9a of the pivot 9 as a base point in a state where the main rod 2 is set up vertically (including a substantially vertical concept) on the inspection scaffold 19 that is the installation surface. When the mirror body 3 rotates in the gap 18 of the belt conveyor 15, the mirror body 3 is brought into contact with the roller 17 to be damaged, and the risk of damaging the belt conveyor 15 can be reduced. .
As a result, the workability of the inspection work can be further improved.

Further, for example, when the mirror body 3 is rotated so that the mirror surface 3c and the main rod 2 face each other with the bolt 23 as a base axis, the outer dimensions of the inspection mirror 1c according to the third embodiment, that is, the diameter direction of the main rod 2 It has the effect that the external dimension in can be made small.
As a result, when the inspection mirror 1c according to the third embodiment is not used, the configuration can be made compact and easy to store.

In the inspection mirrors 1a to 1c according to the first to third embodiments, for example, the main mirror 2 is made of a light metal such as aluminum or glass fiber, thereby reducing the weight of the inspection mirrors 1a to 1c. Workability can be improved. Further, by using a light metal such as aluminum for the support tools 4, 20, 22 and the support pieces 4b, 21, or the support material 12, the first support material 22a, the second support material 22b, and the parts 20a to 20c. Weight reduction is possible.
Furthermore, for example, in the inspection mirrors 1a to 1c according to the first to third embodiments, the light source 10 is provided by housing a battery case that houses a battery serving as a power source for causing the light source 10 to emit light in the main shaft 2. The tip portion of the mirror body 3 can be reduced in weight.
In addition, the mirror body 3a in the mirror body 3 is made of aluminum, so that the mirror body 3a can be prevented from cracking and safety can be improved, and the mirror body 3 itself can be reduced in weight.

Moreover, the damage | wound and dirt of the mirror surface main body 3a can be prevented by providing the surface of the mirror surface main body 3a with a protective film so that attachment or detachment is possible, for example. Furthermore, by attaching a cover made of, for example, synthetic resin (for example, vinyl chloride) to the back surface of the mirror body body 3a, the protection effect of the mirror body body 3a is enhanced, and the maintenance work for the inspection mirrors 1a to 1c is reduced. It has the effect that it can be reduced.
Further, in the inspection mirrors 1a to 1c according to the first to third embodiments, the pivot 9 is made of an elastic body such as rubber so that the anti-slip effect and the shock absorption effect of the tip 9a of the pivot 9 can be exhibited. The operability of the inspection mirrors 1a to 1c and the workability when these are used can be improved.

  As described above, the present invention is an inspection mirror capable of easily observing a narrow area that cannot be directly observed by an operator, such as the inside of a belt conveyor, over a wide range. It can be used in the field of inspection equipment.

  DESCRIPTION OF SYMBOLS 1a-1c ... Inspection mirror 2 ... Main frame 3 ... Mirror surface body 3a ... Mirror surface body main body 3b ... Frame body 3c ... Mirror surface 4 ... Support tool 4a ... Arm 4b ... Support piece 5 ... Bolt 6 ... Bolt 7 ... Washer 8 ... Adjustment screw DESCRIPTION OF SYMBOLS 9 ... Pivot 9a ... Tip 10 ... Light source 11 ... Luminescent body 12 ... Supporting material 13 ... Screw 14 ... Switch 15 ... Belt conveyor 16 ... Belt 17 ... Roller 18 ... Gap 19 ... Inspection scaffold 20 ... Supporting tool 20a-20c ... Parts DESCRIPTION OF SYMBOLS 21 ... Support piece 22 ... Support tool 22a ... 1st support material 22b ... 2nd support material 23 ... Bolt 24 ... Connecting plate

Claims (3)

An inspection mirror used for observing and inspecting the upper surface side inside a narrow space extending horizontally,
A flat mirror body having a flat shape and a short side and a long side ;
A main body for enabling remote operation of the mirror body;
A support tool provided near the end of the main rod, and supporting and fixing the mirror surface body so that the mirror surface of the mirror body is perpendicular to the axial direction while looking up the main rod;
A light source for illuminating an object to be inspected provided at an end portion on the side away from the main body in the mirror body;
A pivot provided at the end of the main shaft;
Have a light emitting means for emitting said light source,
In the mirror body, the short side of the mirror body is disposed on the side where the main rod is disposed,
The support is formed separately from a first support material for gripping or sandwiching the main rod, and the first support material, and the mirror surface of the specular body faces the main rod with respect to the axial direction. A second support member for supporting and fixing the mirror body so as to be vertical,
The inspection mirror according to claim 1, wherein the second support member is pivoted on the first support member, and variably supports and fixes an elevation angle of the mirror surface with respect to the main shaft .   The inspection mirror according to claim 1, wherein the support is provided to be slidable in the axial direction on the main shaft. The main rod, the the end or near the support side provided with no, inspection mirror according to claim 1 or claim 2, characterized in that it comprises a switch for switching off the lighting of the light source.