JP2001201695A - Inspection mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection mirror which allows the easy inspection work in a drain pipe. SOLUTION: A mirror body 31 which allows the regulation of the direction of a mirror finished surface 32 is mounted at the front end at elongatable and contractable approximately rod-like shaft 21. A light 51 is attachably and detachably mounted to a bracket 41 mounted at a shaft 21. The length of the shaft 21 is adjusted by adjusting the direction of the mirror finished surface 32 of the mirror body 31. The light 51 is turned on and the shaft 21 is inserted into a cleaning port 17 with the mirror body 31 as a front end. The inside of the drain pipe 15 is irradiated with the light of the light 51, by which the inside of the drain pipe 15 may be inspected through the mirror finished surface 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection mirror having a light source.

[0002]

2. Description of the Related Art Conventionally, as an inspection mirror, for example, a configuration described in Japanese Patent Application Laid-Open No. Hei 9-100567 has been known.

[0003] In the inspection mirror described in Japanese Patent Application Laid-Open No. Hei 9-100567, a mirror body is attached to the tip of an extendable and substantially rod-shaped shaft so that the direction of the mirror surface can be adjusted. Then, after appropriately adjusting the direction of the mirror surface of the mirror body with respect to the shaft, the mirror body is inserted into a drain pipe with the mirror body as a tip, and the inside of the drain pipe is inspected.

However, in the inspection mirror disclosed in Japanese Patent Application Laid-Open No. Hei 9-100567, the inside of the drain pipe is usually dark because sunlight or the like does not enter. Therefore, when inspecting the inside of the drain pipe, a light source is inserted into the drain pipe. There is a need to. For this reason,
It takes time to inspect the inside of the drain pipe.

Therefore, as an inspection mirror having a light source attached to an inspection mirror having a mirror body, for example, Japanese Utility Model Application Laid-Open No. 56-83712.
A configuration described in Japanese Patent Application Laid-Open No. H10-209,086 is known.

The inspection mirror described in Japanese Utility Model Laid-Open Publication No. 56-83712 is attached to a distal end of a substantially rod-shaped shaft in a state where a mirror body is fixed, and is attached to a base end side of the mirror body. Is equipped with a light source for irradiating the inside of the drain pipe. This light source is mounted in a state where the optical axis is directed in a direction of irradiating the inside of the drain pipe when the light source is inserted into the drain pipe with the mirror body as a tip.

[0007]

However, in the inspection mirror described in Japanese Utility Model Application Laid-Open No. 56-83712, the light source is fixed to the shaft. Of the optical axis cannot be changed. For this reason, when the shaft is inserted substantially perpendicularly to the drain pipe to be inspected, the inside of the drain pipe can be inspected, but when the shaft is inserted at an angle other than substantially perpendicular to the drain pipe, for example, The inside of the drain pipe cannot be inspected. Therefore, there is a problem that inspection work inside the drain pipe is not easy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inspection mirror capable of easily performing an inspection operation in a drain pipe.

[0009]

According to a first aspect of the present invention, there is provided an inspection mirror, comprising: a substantially rod-like shaft which can be extended and retracted; a mirror body having a mirror surface attached to a tip end of the shaft so as to be adjustable; And a light source removably attached to the bracket.

[0010] In this configuration, the direction of the mirror surface of the mirror body is appropriately adjusted with respect to the shaft before the light source is inserted into a drain pipe or the like that needs to be inspected, and the light source is attached to the bracket. Next, after this light source is turned on, the shaft is grasped and inserted into the drain pipe with the mirror body as a tip. At this time, light emitted from the light source illuminates the inside of the drain pipe. Therefore, it is easy to inspect the inside of the drain pipe.
Further, since the light source is detachably attached to the bracket, the light source can be detached from the bracket when the light source is not used, which is convenient. Furthermore, since the mirror body is mounted so that the mirror surface direction can be adjusted with respect to the shaft, the mirror surface direction with respect to the shaft can be adjusted according to the conditions of the drainage pipe to be inspected. Easy.

According to a second aspect of the present invention, in the inspection mirror of the first aspect, the light source is mounted at a position where the optical axis direction of the light source is changed by the mirror surface of the mirror body.

In this configuration, since the light source is attached to the shaft at a position where the optical axis direction is changed by the mirror surface of the mirror body, the mirror body is adjusted after the mirror surface of the mirror body is appropriately adjusted. The light emitted from the light source irradiates the inside of the drain pipe through the mirror surface of the mirror body in a state of being inserted into a drain pipe or the like at the tip. Therefore, even if the inside diameter of the drain pipe into which the mirror body and the light source are inserted is small, the inside of the drain pipe can be inspected, so that the usability of the user is improved.

According to a third aspect of the present invention, in the inspection scope of the first or second aspect, the light source is attached to the shaft such that the optical axis direction of the light source can be changed.

In this configuration, since the direction of the optical axis of the light source with respect to the shaft can be changed, even if the direction of the mirror surface of the mirror body with respect to the shaft is appropriately adjusted,
By appropriately changing the optical axis direction of the light source with respect to this shaft, light emitted from the light source irradiates the inside of the drain pipe through the mirror surface of the mirror body, for example, while being inserted inside the drain pipe or the like. For this reason, since the inside of the drainage pipe can be inspected even in the drainage pipe in any situation, the usability of the user when inspecting the inside of the drainage pipe is improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of an inspection mirror according to the present invention will be described below with reference to FIGS.

1 to 6, reference numeral 11 denotes an inspection mirror.
As shown in FIG. 1, the inspection mirror 11 is a cleaning port of a cleaning pipe 16 connected to a drain pipe 15 buried underground in a conductive state.
The inside of the drainage pipe 15 is inspected by inserting from the drain pipe 17. In addition, the inspection mirror 11 includes a shaft 21 as a substantially rod-shaped handle that can be extended and retracted, and the shaft 21 is formed in a multiplex type with a metal such as stainless steel, for example.

The shaft 21 has a substantially cylindrical shaft main body 22. An opening located at the distal end of the shaft main body 22 has an outer diameter substantially equal to the inner diameter of the shaft main body 22. A first shaft body 23 having a dimension and a substantially cylindrical shape having substantially the same length dimension as the shaft main body 22 is attached in a state of being inserted. The opening located on the distal end side of the first shaft body 23 has an outer diameter dimension substantially the same as the inner diameter dimension of the first shaft body 23, and Second shaft body 24 formed into a substantially cylindrical shape having substantially the same length dimension
Is installed in the inserted state.

Further, an opening located on the tip end side of the second shaft body 24 has an outer diameter dimension substantially the same as the inner diameter dimension of the second shaft body 24, and A third shaft body 25 having a substantially same length dimension as the body 24 and formed in a substantially cylindrical shape is attached in a state of being inserted. The opening located on the distal end side of the third shaft body 25 has an outer diameter that is substantially the same as the inner diameter of the third shaft body 25, and is connected to the third shaft body 25. A fourth shaft body 26 having a substantially cylindrical shape and a substantially cylindrical shape and having substantially the same length is inserted and attached.

The shaft main body 22, the first shaft body 23, the second shaft body 24, and the third shaft body 25
As shown in FIG. 2, the fourth shaft body 26 is pulled out from the shaft main body 22 and extended to extend the first shaft body 23, the second shaft body 24, and the fourth shaft body 24. Each of the third shaft bodies 25 follows and extends from the shaft main body 22.

The shaft main body 22, the first shaft body 23, the second shaft body 24, and the third shaft body
As shown in FIG. 3, the first shaft body 23, the second shaft body 24, and the third shaft body
25 and the fourth shaft body 26,
Fasteners 22a, 22 for fixing the shaft body 23, the second shaft body 24, the third shaft body 25, and the fourth shaft body 26
3a, 24a, and 25a are respectively attached.

The opposite sides of the shaft body 22, the first shaft body 23, the second shaft body 24, the third shaft body 25, and the fourth shaft body 26 are provided along the respective axial directions. A pair of grooves 22b, 2 having a substantially concave arc cross section
3b, 24b, 25b, 26b are formed respectively. These grooves 22b, 23b, 24b, 25b, 26b are slidably engaged with each other in a multiplexed manner in the inserted state, and the shaft main body 22, the first shaft body 23, and the second shaft body 24 are engaged. , Third
The circumferential distortion between the shaft body 25 and the fourth shaft body 26 is prevented.

Further, at the tip of the fourth shaft body 26,
One side of the substantially flat mirror 31 is connected so that the direction of the mirror surface 32 of the mirror 31 can be adjusted. The mirror surface 32 of the mirror body 31 is formed in a substantially circular shape.
Is the mirror body around the tip of the fourth shaft body 26.
The third shaft body 26 is connected to the fourth shaft body 26 so as to freely rotate in a direction orthogonal to the mirror surface 32 of the 31.

As shown in FIG. 4, a bracket 41 as a stopper is attached to the distal end side of the third shaft body 25. The bracket 41 is made of, for example, a vinyl chloride resin or the like and has a substantially U-shaped cross section. It is formed in the shape of a cylinder.
Also. A substantially cylindrical pad 42 partly cut along the axial direction is fitted coaxially to the inner peripheral portion of the bracket 41 in a state where the pad 42 is fitted. And this pad 42
A pair of projecting portions 42a and 42b each having a substantially arc-shaped cross section and projecting toward the axial center along the axial direction of the pad 42 are formed at opposing positions on the inner peripheral portion of the pad 42, respectively. The protrusions 42a and 42b are inserted into the grooves 25b of the third shaft body 25, respectively, with the third shaft body 25 inserted through the pad 42.

Further, at both ends in the circumferential direction of the bracket 41, there are formed insertion holes 43 opened at positions communicating with each other in a direction perpendicular to the axial direction of the bracket 41. A thumb screw 44 such as a bolt is inserted into these insertion holes 43, and a nut 45 is screwed to the tip of the thumb screw 44, whereby the pad 42 inserted into the bracket 41 is clamped. As a result, the third shaft body 25 inserted into the pad 42
It is clamped at 42 and attached to the third shaft body 25.

On the outer periphery of the bracket 41, a joint 46 having a substantially T-shaped cross section is formed along the axial direction of the bracket 41. On the surface of the jointed portion 46, a direction display portion 47 such as an arrow for indicating an attachment direction of an object attached to the jointed portion 46 is displayed.

Further, as shown in FIGS. 5 and 6, a light 51 as a light source for irradiating wide-angle light is detachably attached to the bracket 41. This light 51
Is a general light emitting device for an electric light, and a relatively small halogen lamp (not shown) is accommodated at the front end of the light 51. Also, this light 51 is
When the light 51 is attached to a position where the optical axis direction A shown in FIG. 1 of the light 51 is changed by the mirror surface 32 of the mirror 32, the light 51 is attached to the bracket 41 attached to the third shaft 25 The lever 51 is mounted so that the optical axis direction A of the lever 51 can be changed.

At the base end of the light 51, there is provided a switch unit for turning on and off the halogen lamp of the light 51.
52 are provided. In addition, a joint 53 is formed on one side of the light 51 so as to be detachably fitted to the joint 46 of the bracket 41. The joint 53 is formed in a substantially concave cross section. When the joint 53 is fitted to the joint 46, the joint 53 is connected to the joint 53.
A fixing means 54 for fixing the fitting with 46 is formed.

Further, the fixing means 54 includes a joint 53
And releasing means 55 for releasing the fitting between the joint part 46 and the joint part 46.
On one side. In addition, this joint
At the base end of 53, a sliding portion (not shown) is formed for enabling the optical axis direction A of the light 51 to be changed in a state where the joint portion 53 is fitted to the jointed portion 46 of the bracket 41. I have. This sliding part is in a state where the joint part 53 of the light 51 is fitted to the jointed part 46 of the bracket 41,
The optical axis direction A of the light 51 can be changed in the left-right direction with respect to the jointed portion 46 of the bracket 41.

Next, the operation of the embodiment will be described.

First, the mirror 31 is attached to the fourth shaft 26.
The direction of the mirror surface 32 is appropriately adjusted. Then the bracket
The joint part 53 of the light 51 is fitted to the joint part 46 of 41, and the light 51 is attached to the shaft 21, and the mirror body 31
The optical axis direction A of the light 51 is appropriately changed in accordance with the direction of the mirror surface 32 of FIG. Then, switch 52 is turned on and light 51 is turned on.
Lights up.

Next, the first shaft body 23 is appropriately pulled out of the shaft main body 22, and the second shaft body 24 is appropriately drawn out of the first shaft body 23. The third shaft body 25 is appropriately pulled out of the shaft body 24, and the fourth shaft body 26 is appropriately drawn out of the third shaft body 25 to adjust the length of the shaft 21.

Thereafter, each of the fasteners 22a, 23a, 24a, 25a is rotated so that the first shaft 2
3. The second shaft member 24, the third shaft member 25, and the fourth shaft member 26 are fixed.

Then, while holding the base end of the shaft main body 22 in the cleaning port 17 of the cleaning tube 16, the lens body 31 is inserted with the mirror body 31 at the tip. Then, the light of the light 51 irradiates into the drain pipe 15. At this time, the edge of the cleaning port 17 of the cleaning pipe 16
Look into 32 and observe to inspect the inside of the drainpipe 15.

As described above, according to the above-described embodiment, the orientation of the mirror surface 32 of the mirror body 31 with respect to the fourth shaft body 26 is appropriately adjusted before the insertion into the drain pipe 15 requiring inspection. And the joint 53 of the light 51 is fitted to the joint 46 of the bracket 41. In addition, lights
The light 51 is turned on after the direction A of the optical axis of 51 is changed according to the direction of the mirror surface 32 of the mirror body 31. After that, the first shaft body 23, the second shaft body 24, the third shaft body 25, and the fourth shaft body 26 are appropriately pulled out from the shaft body 22, and the state of the drain pipe 15 for inspection is performed. Adjust the length of the shaft 21 according to the requirements. Then
When the mirror 31 is inserted into the cleaning port 17 of the cleaning tube 16 with the tip as the tip,
The light of the light 51 irradiates the inside of the drain pipe 15. Therefore, the inspection work inside the drain pipe 15 can be easily performed.

When the joint 53 of the light 51 is fitted to the joint 46 of the bracket 41 attached to the third shaft body 25, the fixing means of the joint 53 is fixed.
With 54, the fitting between the jointed portion 46 and the joint portion 53 is fixed. For this reason, even when an impact is applied to the shaft 21 with the mirror body 31 inserted into the cleaning port 17 of the cleaning tube 16 with the tip end, the light 51 is unlikely to come off the bracket 41. Therefore, the detachment of the light 51 from the bracket 41 can be prevented.

Further, by using the releasing means 55 of the fixing means 54, the fitting between the jointed portion 46 of the bracket 41 and the joint 53 of the light 51 can be easily released. Therefore, when there is no need to use the light 51, or when carrying the inspection mirror 11, the light from the bracket 41 can be used.
This is convenient because the 51 can be easily removed, and the usability of the user P can be improved.

The mirror body 31 is attached to the fourth shaft body 26.
The direction of the mirror surface 32 of the fourth shaft body 26 can be appropriately adjusted according to the internal condition of the drainage pipe 15 to be inspected. Even 15 can be checked. Further, since the inside of the drain pipe 15 can be inspected in any orientation of the mirror surface 32, the inspection work inside the drain pipe 15 can be easily performed.

After the light 51 is mounted on the bracket 41 at a position where the optical axis direction A of the light 51 is changed by the mirror surface 32 of the mirror body 31, the orientation of the mirror surface 32 is appropriately adjusted. When the body 31 is inserted into the drain pipe 15 with the tip as the tip, the light of the light 51 irradiates the inside of the drain pipe 15 via the mirror surface 32. For this reason, even if the inside diameter of the cleaning pipe 16 or the drain pipe 15 is small, the inside of the drain pipe 15 can be inspected, and the usability of the user P can be improved.

Further, the jointed portion 46 of the bracket 41
In contrast, since the optical axis direction A of the light 51 can be changed in the horizontal direction by the sliding portion, the direction of the mirror surface 32 of the mirror body 31 with respect to the fourth shaft body 26 is appropriately adjusted. Also, the light axis direction A of the light 51 with respect to the third shaft body 25
Is appropriately changed, so that the light of the light 51 irradiates the inside of the drain pipe 15 via the mirror surface 32 in a state of being inserted into the drain pipe 15. For this reason, even the drain pipe 15 in any situation can be inspected, so that the usability of the user P when inspecting the inside of the drain pipe 15 can be improved.

Then, the first shaft body 23 is inserted into the shaft main body 22, the second shaft body 24 is inserted into the first shaft body 23, and the third shaft body 23 is inserted into the second shaft body 24. 25 is inserted, and furthermore, the shaft 21 is formed in a multiplex manner in which the fourth shaft body 26 is inserted into the third shaft body 25. , The shaft 21 is about five times as long as the shaft body 22. Because of this, drain pipe
Even if 15 is buried deep in the ground and the cleaning tube 16 is deep,
After appropriately adjusting the length of the shaft 21, the inside of the drain pipe 15 can be inspected by inserting the mirror body 31 into the cleaning port 17 of the cleaning pipe 16 with the mirror body 31 as a tip.

Further, the shaft main body 22, the first shaft body
23, the second shaft body 24, the third shaft body 25, and the fourth shaft body 26 have grooves 22b, 23b, 24b, 25b,
The formation of 26b can prevent the first shaft body 23, the second shaft body 24, the third shaft body 25, and the fourth shaft body 26 from being distorted in the circumferential direction with respect to the shaft body 22.

Further, protrusions 42a, 42b are formed on the inner peripheral portion of the pad 42.
With the projections 42a and 42b fitted in the grooves 25b of the third shaft body 25 and the pads 42 inserted through the third shaft body 25 tightened by the bracket 41, the third The distortion of the bracket 41 with respect to the shaft body 25 in the circumferential direction can be prevented. Because of this, this bracket
By attaching the light 51 to 41, distortion of the light 51 in the circumferential direction with respect to the third shaft body 25, and eventually the shaft 21, can be prevented.

Then, the fasteners 22a, 23a, 24a, 25a are respectively attached to the distal ends of the shaft main body 22, the first shaft body 23, the second shaft body 24, and the third shaft body 25. , These fasteners 22a, 23a, 24
By rotating the first and second shaft bodies a and 25a, the first shaft body 23 can be fixed to the shaft main body 22, and the second shaft body 24 can be fixed to the first shaft body 23. The third shaft body 25 can be fixed to the body 24, and further, the fourth shaft body 25 can be fixed to the third shaft body 25.
26 can be fixed.

For this reason, after appropriately adjusting the length of the shaft 21, each of the fasteners 22a, 23a, 24a, 25a is rotated so that the cleaning opening 17 of the cleaning pipe 16 is made with the mirror body 31 at the tip. The shaft 21 is fixed when the inside of the drain pipe 15 is inspected by inserting it into the drain pipe 15, so that the usability of the user P when inspecting the drain pipe 15 can be improved.

The bracket 41 is formed in a substantially U-shaped cross section, and the pad 42 is formed in a substantially cylindrical shape with a part cut along the axial direction. Since the pad 42 and the bracket 41 can be attached to the third shaft body 22 from the side of the third shaft body 22 without inserting the pad 42 and the bracket 41, the attaching / detaching work of the pad 42 and the bracket 41 can be performed. Can be easily done.

Further, the jointed portion 46 of the bracket 41
The direction indicator 47 is provided on the
Even when the joint part 53 of the light 51 is fitted to the jointed part 46 for the first time, it can be easily fitted, and the mounting error of the light 51 to the bracket 41 can be reduced.

In the above embodiment, the first shaft body 23 is inserted into the shaft main body 22, the second shaft body 24 is inserted into the first shaft body 23, and the second shaft body The configuration of the multiplex type shaft 21 in which the third shaft body 25 is inserted into the 24 and the fourth shaft body 26 is further inserted into the third shaft body 25 has been described. Any configuration may be used as long as the inside of the drain pipe 15 can be inspected by inserting the mirror 31 attached to the tip into the cleaning port 17 of the cleaning pipe 16 with the tip as the tip. .

Then, the third shaft body 25 of the shaft 21
Although the configuration in which the bracket 41 is attached to the third shaft body 25 via the pad 42 has been described, the same bracket 41
It can be attached to a smaller diameter, for example the fourth shaft body 26.

Further, by forming the pad 42 further thinner, the same bracket 41 can be connected to the third shaft body.
For example, it can be attached to the second shaft body 24, the first shaft body 23, and the shaft main body 22 having a diameter larger than 25. Accordingly, by appropriately adjusting the thickness of the pad 42, the bracket 41 can be attached even to the shafts 21 having different outer diameters.

[0050]

According to the inspection mirror according to the first aspect, after adjusting the direction of the mirror surface, attaching the light source and turning on the light source, if the light source is inserted into, for example, a drain pipe, the light of the light source irradiates the inside of the drain pipe. Therefore, it is easy to inspect the inside of the drain pipe, and since the light source can be attached to and detached from the bracket, the light source can be removed from the bracket when not using the light source, which is convenient. Since the orientation of the mirror surface of the mirror body is adjustable, the orientation of the mirror surface of the mirror body with respect to the shaft can be appropriately adjusted according to the situation of the drainage pipe to be inspected, so that the inspection work inside the drainage pipe can be facilitated .

According to the inspection mirror of the second aspect, the first aspect is the first aspect.
In addition to the effects of the described inspection mirror, the light source is attached at the position where the mirror surface of the mirror body changes the optical axis direction, so after adjusting the orientation of the mirror surface of the mirror body, for example, inserting it inside the drain pipe etc. Light irradiates the inside of the drain pipe through the mirror surface of this mirror body, so even if the inside diameter of the drain pipe into which the mirror body and the light source are inserted is small, the inside of the drain pipe can be inspected and the usability of the user can be improved. .

According to the inspection mirror of the third aspect, the first aspect is the first aspect.
Or, in addition to the effect of the inspection mirror described in 2, since the optical axis direction of the light source can be changed, even if the direction of the mirror surface of the mirror body is adjusted,
By changing the direction of the optical axis of the light source, the light from the light source illuminates the interior of the drain pipe, for example, through the mirror surface of the mirror body. The usability of the user when inspecting the inside of the pipe can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of an inspection mirror of the present invention.

FIG. 2 is a side view showing an extended state of the inspection mirror;

FIG. 3 is a perspective view of a part of the inspection mirror;

FIG. 4 is a perspective view showing a bracket of the inspection mirror;

FIG. 5 is a top view showing a light source of the inspection mirror;

FIG. 6 is a bottom view showing the light source of the inspection mirror.

[Explanation of symbols]

 11 Inspection mirror 21 Shaft 31 Mirror 32 Mirror 41 Bracket 51 Light as light source

Claims (3)

[Claims] 1. An expandable and substantially rod-shaped shaft, a mirror body whose mirror surface is adjustable at the tip of the shaft, a bracket mounted on the shaft, and a detachably mounted bracket. An inspection mirror comprising a light source. 2. The inspection mirror according to claim 1, wherein the light source is mounted at a position where an optical axis direction of the light source is changed by a mirror surface of the mirror body. 3. The inspection mirror according to claim 1, wherein the light source is attached to the shaft such that an optical axis direction of the light source can be changed.