JPH0734412U - Endoscope for tube - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide an easy-to-use endoscope for a tube that allows the inside of the tube to be clearly seen. [Structure] A tubular endoscope body 1 in which an eyepiece portion 12 provided on one end face is closed by a transparent body 11 and an opening portion 15 is opened in a side wall on the other end side, and inside the endoscope body 1 And a reflecting mirror 16 which is disposed so as to face the opening 15 at an angle of 15 ° to 75 °, and the endoscope main body for irradiating light into the tubular body A through the reflecting mirror 16. 1 and a light emitting portion 8 provided on one end side of the light source 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endoscope for a pipe used when an internal state of a pipe such as a water pipe is inspected from the outside.

[0002]

[Problems to be solved by conventional techniques and devices]

 The fact is that the means for inspecting the internal state of the seed tube has not been developed yet. For example, the state of attachment of the anticorrosion core that is inserted into the hole formed in the tube, the tube There was no means from the outside to inspect the sealed condition of the ball valve installed at the branch part provided on the inside, the state of rust on the inner surface of the pipe, etc.

In this case, if the inside of the pipe can be observed from the outside, a defective portion can be detected early, work efficiency can be improved, and regular inspection can be performed. Therefore, the maintenance and inspection work can be greatly provided.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to provide an easy-to-use tube endoscope capable of clearly seeing the inside of the tube. To do.

[0005]

[Means for Solving the Problems]

 That is, in order to solve the above problems, the present invention has a tubular endoscope body in which an eyepiece 12 provided on one end face is closed by a transparent body 11 and an opening 15 is formed on a side wall on the other end side. 1, a reflecting mirror 16 disposed inside the endoscope body 1 so as to face the opening 15 at an angle of 15 ° to 75 °, and the inside of the tubular body A through the reflecting mirror 16. The endoscope for a tubular body comprises a light emitting portion 8 provided at one end of the endoscope main body 1 so as to irradiate light to the inside.

[0006]

[Action]

 Therefore, in the tube endoscope characterized by the above-mentioned configuration, the light emitting section 8 is caused to emit light in a state where the other end side of the endoscope body 1 is inserted into the hole provided in the tube A. Then, the inside of the tube A is irradiated with light through the reflecting mirror 16, and the internal state can be observed through the reflecting mirror 16 from the eyepiece 12 made of the transparent body 11.

[0007]

【Example】

 An embodiment of a tube endoscope according to the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a tubular body 2, a tubular casing 4 screwed to one end of the tubular body 2 via an adapter 3, and the other tubular body 2. 3 shows an endoscope body including a cover body 5 screwed to an end.

Reference numeral 6 denotes a screw hole formed so as to face the peripheral surface of the casing 4. The screw hole 6 has a rod-shaped light emitting portion 8 having a light bulb 7 at the tip and capable of accommodating a battery and an electric wire (not shown). The light emitting portion 8 and the casing 3 are screwed together, and an O-ring 9 seals between the light emitting portion 8 and the casing 3.

Reference numeral 10 denotes a pair of reflecting mirrors having a tilted mirror surface 10 a that is tilted about 45 ° with respect to the axis of the light emitting unit 8 and is spaced by a predetermined distance so that a space B is formed between both reflecting mirrors 10. The tilted mirror surface 10a is installed inside the casing 3 and is arranged so as to face the light bulb 7 of the light emitting section 8.

Reference numeral 11 denotes a transparent body composed of a convex lens arranged on the back side of the reflecting mirror 10. A transparent ring 11 is formed by screwing a pressing ring 13 into a screw hole as an eyepiece 12 formed at the end of the casing 3. And, the separation of the reflecting mirror 10 is prevented. Reference numeral 14 indicates an O-ring for sealing.

Reference numeral 15 is an opening formed in the side wall of the cover body 5, and a reflecting mirror 16 facing the opening 15 and having an inclination angle of about 45 ° is internally provided in the cover body 5. .

Reference numeral 17 is a through hole formed in the circumferential surface of the casing 3 in the radial direction, and a valve 18 is connected to the through hole 17 as shown in FIG.

Reference numeral 19 denotes a fixture that is loosely fitted to the tubular body 2. The fixture 19 includes an adapter 20 having screw parts 20a and 20b formed on the inner peripheral surface on one end side and the outer peripheral surface on the other end side, and the adapter 20. A stopper nut 21 screwed into a threaded portion 20b of 20 and a partial notch (not shown) arranged in a space 22 between the tapered inner peripheral surface 21a of the stopper nut 21 and the outer peripheral surface of the tubular body 2. ) And a pair of handles 24 project from the outer peripheral surface of the stopper nut 21. Reference numeral 25 is an O-ring mounted in a groove 20c formed on the inner peripheral surface of the adapter 20 on one end side, and 26 is a packing mounted inside the screw portion 20a of the adapter 20.

The tube body endoscope 27 according to the present embodiment has the above-described structure, and is used to prevent corrosion of the inner peripheral surface of the hole 31 formed in the tube body A. Therefore, the case of inspecting the mounting state of the anticorrosion core 32 press-fitted on the inner peripheral surface of the hole 31 will be described.

First, as shown in FIG. 3, the fixture 19 of the endoscope 27 is attached to the branch portion 28 protruding from the side surface of the tubular body A. In this case, the screw provided on the adapter 20 of the fixture 19 is used. The portion 20a is screwed onto the branch portion 28. A branch valve 29 that can be opened and closed is installed in the branch portion 28 of the pipe A.

Next, after opening the branch valve 29 and inserting a desired amount of the cover body 5 of the endoscope main body 1 into the pipe body A through the flow hole 30 and the hole 31 formed in the pipe body A, When the handle 24 of the fixture 19 is rotated and the stopper nut 21 is screwed into the threaded portion 20b of the adapter 20, the tapered surface of the stopper nut 21 presses the stop ring 23 to reduce the diameter, and the stop ring 23 causes the cylinder to move. The outer peripheral surface of the portion 2 is held.

After that, the valve 18 is opened to allow the circulating fluid in the tubular body A to flow into the endoscope main body 1 through the opening 15 of the cover body 5, and when the endoscope main body 1 is filled with the fluid. Then, the valve 18 is closed.

Next, when the light bulb 7 of the light emitting portion 8 of the endoscope 27 is made to emit light, the inside of the tubular body A is irradiated through the reflecting mirrors 10 and 16, and the anticorrosion core 32 is attached. The state can be seen from the center of the pressing ring 13 through the reflecting mirror 16 and the transparent body 11. Since the work of inserting the anticorrosion core 32 is usually carried out in a groping state, it is very meaningful that the insertion state can be confirmed from the outside. With the core 32, the anticorrosion treatment of the drilled hole 31 can be suitably performed.

In this case, since the air inside the endoscope main body 1 is evacuated and filled with fluid, the internal state of the tubular body A can be clearly seen, and a large number of lenses can be used. Since it is not a structure that uses light to operate, it does not require operations such as aiming, and it does not complicate a series of inspection work at the site.

If the stopper nut 21 is loosened by the handle 24 and the endoscope body 1 is rotated or moved in the radial direction of the tubular body A, the other portions of the tubular body A will also have internal portions. It is possible to inspect the condition. At the time of such inspection, the stopper nut 21 is tightened and fixed to the adapter 20.

After the inspection and the like, the stopper nut 21 is unscrewed from the adapter 20, the endoscope body 1 is pulled out from the tube A, and the branch valve 29 is closed. It may be removed from the branch part 28.

Further, when the light bulb 7 needs to be replaced, the light emitting portion 8 can be unscrewed from the screw hole 6 of the casing 4, and a series of replacement work can be performed very easily.

Thus, the endoscope 27 according to the present embodiment has a practical advantage that it is inexpensive and can be easily manufactured because the entire configuration of the endoscope 27 is very simple.

In the above embodiment, the casing 4 of the endoscope body 1 is provided with the convex lens, which is the transparent body 11, but when the tubular body 2 of the endoscope body 1 is short. For example, the transparent body 11 may be made of flat glass or plastic.

Further, in the above embodiment, the light emitting portion 8 is provided on the side wall of the endoscope body 1, but the light emitting portion 8 is provided so as not to hinder the observation from the eyepiece portion 12. It may be provided in the axial direction, and in this case, the reflecting mirror 10 incorporated in the casing 4 can be omitted.

Further, the inclination angle of the reflecting mirror 16 with respect to the opening 15 is preferably set to 45 ° as in the above-mentioned embodiment, but the important point is to be within the range of 15 ° to 75 °.

Further, it is possible to use prisms instead of the reflecting mirrors 10 and 16.

In addition, the length of the endoscope body 1 and the shape of each part can be arbitrarily changed according to the tube diameter of the tube A to be inspected.

[0030]

[Effect of device]

 As described above, the endoscope for a tubular body according to the present invention is fixed to the opening in the endoscope body in which the eyepiece is closed by the transparent body and the opening is formed in the side wall. Since the reflecting mirrors are arranged so as to be inclined at an angle and the light emitting portion is provided at one end side of the endoscope body to irradiate light into the tubular body through the reflecting mirrors, the internal state of the tubular body can be controlled from the outside. It has come to have a special effect that it can be easily observed.

Further, since it is not a structure for manipulating light using a large number of lenses, complicated aiming and the like are unnecessary, and it is easy to use, and the overall configuration is extremely simple. It also has a practical effect that it can be manufactured inexpensively and easily.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a tube endoscope showing an embodiment according to the present invention.

FIG. 2 is a sectional view of the same main part.

FIG. 3 is a partially enlarged cross-sectional view showing a usage state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope body 8 ... Light emitting part 11 ... Transparent body 12 ... Eyepiece part 15 ... Opening part 16 ... Reflecting mirror A ... Tube body

Claims (2)

[Scope of utility model registration request] 1. An eyepiece (12) provided on one end surface is a transparent body (11).
A tubular endoscope main body (1) that is closed by an opening (15) in the side wall on the other end side, and the opening (15) in the endoscope main body (1) A reflecting mirror (16) arranged to face each other at an angle of 15 ° to 75 °, and a tubular body through the reflecting mirror (16).
(A) A tube endoscope comprising a light emitting portion (8) provided on one end side of the endoscope body (1) so as to irradiate light into the inside. 2. An eyepiece (12) provided on one end face is a transparent body (11).
And a cylindrical endoscope body (1) that is closed by an opening (15) on the side wall on the other end side and that faces the opening (15) in the endoscope body (1). And a light emitting portion (8) provided on one end side of the endoscope body (1) for irradiating light into the tube body (A) through the prism. Endoscope for tube.