JPH0522898Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a pipe inspection tool mainly used for inspecting the inside of a main pipe through a cleaning port formed by a pipe bent in an S-shape. It is.

[Background of the idea]

Inspection tubes communicating with the outside are branched off at predetermined positions in pipelines such as sewers, and the interior of the pipelines is cleaned and inspected for blockages and damage through the inspection tubes.

[Conventional technology]

Conventionally, as shown in FIG. 8, an inspection tool 10 consisting of a handle bar 1 and a mirror 2 attached to the tip of the handle bar 1 is inserted into the pipe through an inspection tube, and the inspection tool 10 is inserted into the pipe through the mirror 2. The inside of the pipeline was visually inspected.

[Problems to be solved by the invention] However, the pipeline often has an S-shaped inspection route branched off as shown in FIG. In the figure, 3 is a T-shaped pipe joint having sockets 3A, 3B, and 3C;
Sewage pipes 4 and 5 are connected to B, and S is connected to the socket 3C.
An S-shaped communication pipe 6 is connected, and a socket 6A is formed at the upper end of the S-shaped communication pipe 6, and an inspection tube 7 is connected to the socket 6A. Even if the inspection tool 10 is inserted into the inspection path consisting of the S-shaped connecting pipe 6 and the inspection tube 7, only the pipe joint 3 portion will be visible to the inspector's eyes 8 as shown by the dotted line in the figure, and the sewer pipe will be damaged. I find myself unable to see through to 5.

[Means for solving problems]

As a means to solve the above-mentioned problems, the present invention has mirrors 2A and 2B at a predetermined angle at the middle and lower ends of the bendable handle bar 1, which has a pivot point 13F in the middle. Attach it with a
Further, a pipe inspection tool 10A is provided, in which the root end of a forward-facing lighting device 15 is pivotally attached to the side or below the mirror at the lower end of the handle bar 1.

[Effect]

The function of the present invention is as follows.

The handle bar 1 is bent at the pivot point 13F according to the shape of the pipe, and the lighting fixture 15 is further bent at the pivot point with respect to the handle bar 1 and guided into the pipe. Thus, even if the upper mirror 2A is within the visual range of the inspector, the lower mirror 2B is inserted deep into the main pipe. The illumination device 15 on the side or below the lower mirror is in contact with the bottom of the conduit, is guided and bent with respect to the handle bar 1, and is always directed substantially toward the front of the conduit. Therefore, when the lighting device 15 is turned on, the light from the lighting device 15 illuminates deep inside the pipe in front without hitting the mirrors 2A and 2B, and thus the image of the lower mirror 2B is received by the upper mirror 2A. , upper mirror 2
Via A, the inspector can visually inspect deep inside the pipe.

[Effect of idea]

Therefore, in the present invention, even if there is no external communication hole (for example, a box) that allows sunlight to enter, and the cleaning opening is formed by a curved pipe, the main pipe can be removed without the light from the lighting fixture directly hitting the mirror. The interior of the pipe can be clearly inspected, and blockages and damage in all pipes can be reliably detected.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 7. In a pipeline inspection tool 10A shown in the figures, 1 is a handle bar, and a handle 11 is detachably attached to the upper end. Upper handle bar 12 and lower handle bar 1
The lower handle bar 13 is provided with a pivot point 13F near the connection with the upper handle bar 12, and one end of the connecting rod 14 is provided with a pivot point 13F at the lower end of the lower handle bar 13. The other end of the connecting rod 14 is pivotally connected to the root end of a forward-facing lighting fixture 15.
Mirrors 2A and 2B are attached to the upper and lower parts of the lower handle bar 13 at a predetermined angle. The lighting fixture 15 is located to the side or below the mirror 2B.

As shown in FIGS. 3 and 4, the handle 11 includes an outer cylinder 11A made of an insulator such as plastic, an upper cover 11B and a lower cover 11C screwed onto the top and bottom of the outer cylinder 11A, and an upper cover 11B and a lower cover. Electrode layer 11 made of a conductor such as metal formed on the inner wall of 11C
D, 11E, a conductive band 11F that connects the electrode layers 11D, 11E, a switch 11G interposed in the conductive band 11F, and a conductor such as metal that is inserted into the lower cover 11C and whose root end is connected to the electrode layer 11E. a connecting tube 11H, and a connecting tube 11H on the top of the connecting tube 11H.
Electrode plate 11I located so as not to contact H
and an electrode 11K connected to the electrode plate 11I via a lead wire 11J and supported by a sliding support 11L made of an insulator such as plastic, and between the sliding support 11L and the electrode plate 11I. It consists of a spring 11M that is stretched out and biases the sliding support 11L downward, and a spring 11N that is stretched out from the electrode layer 11D of the top lid 11B and made of a conductor such as metal. ,4C
is built-in, and the negative electrodes of the dry batteries 4A, 4B, and 4C are equipped with a spring 11N and an electrode layer 11 that are pressed against the negative electrodes.
D, conductive band 11F, switch 11G, conductive band 11
F, connected to the connecting tube 11H via the electrode layer 11E, and the anode is connected to the electrode 11K via the electrode plate 11I and lead wire 11J.

The handle 11 connects its connecting tube 11H to the upper handle bar 1.
It is removably attached above and below the upper handle bar 12 by being fitted onto the upper end of the upper handle bar 2 . At this time, a key-shaped engagement groove 11O is formed in the connecting tube 11H, and a locking pin 12J is protruded from the upper end of the upper handle bar 12, as shown in FIG.
By engaging J with the engagement groove 11O, the handle 1
1 and the upper handle bar 12 from falling off. The upper handle bar 12 is a metal outer cylinder 12
A, an electrode 12B supported at the upper end of the outer cylinder 12A by a support stopper 12C made of an insulator such as plastic, and the outer cylinder 12A as shown in FIG.
An enlarged diameter part 12D formed at the lower end of A, an electrode 12E supported by the enlarged diameter part 12D via a sliding support 12F, and a seat provided inside the root end of the enlarged diameter part 12D. A plate 12G, and a sliding support 12F that is spanned between the seat plate 12G and the sliding support 12F.
a spring 12H that urges the electrodes downward; a lead wire 12I that connects the electrodes 12B and 12E;
When the handle 11 is attached to the upper handle bar 12 as described above, the electrode 11K of the handle 11 is connected to the electrode 12B of the upper handle bar 12 by the elasticity of the spring 11M as shown in FIG. Being pressed.

The upper handle bar 12 is removably connected to the upper end of the lower handle bar 13 by fitting its enlarged diameter portion 12D onto the upper end of the lower handle bar 13. At this time, a key-shaped engagement groove 12K is formed in the enlarged diameter portion 12D, and a locking pin 1 is formed in the upper end of the lower handle bar 13.
3E is provided in a protruding manner, and as shown in FIG. 7, by engaging the locking pin 13E with the engagement groove 12K, the connecting portion between the upper handle bar 12 and the lower handle bar 13 is prevented from falling off. There is. As shown in FIG. 6, the lower handle bar 13 includes a metal outer cylinder 13A and the outer cylinder 13.
An electrode 13B supported at the upper end of A by a support stopper 13C made of an insulator such as plastic;
Lead wire 13D connected to the electrode 13B
and the locking pin 13E, and when the upper handle bar 12 is connected to the lower handle bar 13 as described above, the electrode 12E of the upper handle bar 12 is connected to the electrode of the lower handle bar 13 as shown in FIG. 13B by the elasticity of spring 12H.

As described above, the negative electrode of the dry battery is connected from the connecting tube 11H of the handle 11 to the outer tube 12A of the upper handle bar 12 and the outer tube 13A of the lower handle bar 13, and further to the connecting rod 14.
Connect to one light terminal of the lighting fixture 15 via
The cathode of the dry battery is connected from the electrode 11K of the handle 11 to the electrode 12B of the upper handle bar 12, to the lead wire 12I, to the electrode 1.
2E, electrode 13B of lower handle bar 13, lead wire 1
It is connected to the other electric light terminal of the lighting fixture 15 through the 3D, and thus the lighting fixture 15 is turned on and off by the switch 11G of the handle 11.

As shown in FIG. 1, the pipeline inspection tool 10A is inserted into an S-shaped inspection channel. In the figure, 3 is a T-shaped pipe joint having sockets 3A, 3B, and 3C. Sewage pipes 4 and 5 are connected to the sockets 3A, 3B of the pipe joint 3, and S-shaped connection is connected to the socket 3C. A pipe 6 is connected, and a socket 6A is formed at the upper end of the S-shaped connecting pipe 6, and an inspection tube 7 is connected to the socket 6A. When the inspection tool 10A is inserted into the inspection path consisting of the S-shaped connecting pipe 6 and the inspection tube 7, the handle bar 1 moves to the pivot point 13F of the lower handle bar 13 according to the shape of the inspection channel.
From there, the connecting rod 14 and the lighting fixture 15 are bent.
The lighting fixture 15 is bent from each connection portion to reach the bottom of the pipe joint 3. In this state, the angle is such that the mirror 2B can see into the end of the pipe joint 3 and the back of the sewer pipe 5,
If the angle of the mirror 2A is set so that the image on the mirror 2B is reflected upward by the mirror 2A, the image on the mirror 2B is seen by the eyes 8 of the inspector through the mirror 2A. At this time, of course, the lighting fixture 15 is turned on, but the lighting fixture 15 is located on the side or below the mirror 2B, touches the bottom of the pipe joint 3, is guided, and is bent relative to the lower handle bar 13 to approximately Since it faces the front, the light from the lighting device 15 does not hit the mirrors 2A and 2B, but illuminates the front of the pipe deep inside.

[Brief explanation of drawings]

Figures 1 to 7 show an embodiment of the present invention, with Figure 1 being an explanatory diagram of how the inspection tool is used, Figure 2 being a front view of the inspection tool, Figure 3 being a longitudinal sectional view of the handle, and Figure 3 being a longitudinal sectional view of the handle. Figure 4 is an enlarged vertical cross-sectional view of the lower part of the handle, Figure 5 is a partial view of the connection between the handle and the upper handle bar, Figure 6 is a vertical cross-sectional view of the connection area between the upper handle rod and the lower handle rod, and Figure 7 is the upper handle rod and the connection part. FIG. 8 is a perspective view of the conventional example, and FIG. 9 is a diagram of the conventional example in use. In the figure 1...Handle bar, 2A, 2B...Mirror,
10A...Inspection tool, 12...Upper handle bar, 13...
...lower handle bar, 13F...pivot point, 14...connection rod, 15...lighting device.

Claims (1)

[Scope of utility model registration request] Mirrors are attached at a predetermined angle to the middle and lower ends of a bendable handle bar that has a pivot point in the middle, and furthermore, mirrors are attached to the sides of the mirror at the lower end of the handle bar or A pipe inspection tool characterized by having the root end of a forward-facing lighting device pivoted at the bottom.