JP2010096719A - Forcing-type pipe inside inspecting camera device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forcing-type pipe inside inspecting camera device which is made compact as a whole and is easy to handle and is capable of attaining simplification of constitution, stabilization of operation and cost reduction. <P>SOLUTION: The forcing-type pipe inside inspecting camera device is equipped with a bottomed cylindrical body frame 11, having an annular winding frame part 11a and a circular opening part 11b, a hard cable 12, having resilience containing an image signal transmitting line and a power supply line and wound around the inner peripheral part of the winding frame part 11a and taken into and out of the opening part 11b, and a cable guide 17 constituting a cable hook for leading out the hard cable 12, wound around the inner peripheral part of the winding frame part 11a to the outside of the winding frame part from the opening part 11b of the body frame 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a push-type in-pipe inspection camera device suitable for application to inspection of, for example, water pipes, sewer pipes, gas pipes, and the like.

  As an in-pipe inspection camera device for inspecting water pipes, sewer pipes, gas pipes, etc., a camera head is attached to the tip of a hard cable with elasticity, and the camera head is inserted into the pipe to be inspected with a hard cable, There is a push-type in-pipe inspection camera device called a hard cable camera that takes an image of the inside of a tube with a camera head.

  This push-type in-pipe inspection camera device was photographed with a camera head and a cable storage mechanism that can store a hard cable of a predetermined length with rigidity, for example, in a wound state and draw out the amount required for inspection. A display mechanism for displaying an image on a monitor screen is provided.

  Since the cable storage mechanism handles a hard cable having rigidity and a large elasticity, the cable storage mechanism is configured to allow the hard cable to be taken in and out by rotating a large-diameter winding drum. This structure consists of a rotation support mechanism for the take-up drum that rotatably supports the take-up drum, a display mechanism independent of the take-up drum, and a display mechanism for each transmission line of the video signal and the power source contained in the hard cable. Control circuit and slip ring for circuit connection to the power supply circuit, the overall configuration of the apparatus is increased in size, the circuit and configuration are complicated, and the factors of circuit connection instability due to long-term use are attached. There was a problem.

Conventionally, there is a hard cable camera system characterized by the structure of a camera head as an in-pipe inspection camera device including the cable storage mechanism and the display mechanism (see Patent Document 1). In addition, as a technique for storing a hard cable so that it can be fed out in a wound state, there is an optical fiber cable winding frame structure (drop box) characterized by a cable take-out mechanism (see Patent Document 2).
JP 2008-028722 A JP 2008-171003 A

  As described above, in the conventional push-type in-pipe inspection camera device, since it is a configuration including a rotating drum around which a hard cable is wound, the configuration of the entire device is enlarged, and the circuit and configuration are complicated. There was a problem that instability factors on the circuit connection for long-term use due to the presence of slip rings were attached.

  It is an object of the present invention to provide a push-in type in-pipe inspection camera device that solves the above problems, makes the entire device compact, facilitates handling, simplifies the configuration, stabilizes operation, and reduces costs. And

  The present invention includes a bottomed cylindrical main body frame having an annular winding frame portion and a circular opening, and a video signal transmission line, and is wound around an inner peripheral portion of the winding frame portion to form the opening. A hard cable having elasticity, which is taken in and out from a section, a camera head attached to the tip of the hard cable and connected to the transmission line, and attached to the main body frame. A display monitor that is circuit-connected to the transmission line at the end, and the hard cable that is provided on the winding frame and wound around the inner periphery of the winding frame from the opening to the outside of the winding frame It features a push-in type in-pipe inspection camera device having a cable guide to be led out.

  According to the push-type in-pipe inspection camera device of the present invention, the entire device can be made compact and easy to handle, and the configuration including the circuit can be simplified, the operation can be stabilized, and the product can be made inexpensive.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a push-in type in-pipe inspection camera device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.

  As shown in FIG. 1, a push-in tube inspection camera device 1 according to an embodiment of the present invention includes a bottomed cylindrical body frame 11 having an annular winding frame portion 11a and a circular opening portion 11b, and a video signal. A hard cable 12 having elasticity and enclosing the transmission line and the power supply line, wound around the inner peripheral part of the winding frame part 11a, and taken in and out of the opening part 11b, and the distal end part of the hard cable 12 A camera head 13 that is attached and connected to the transmission line, a display monitor 15 that is attached to the main body frame 11 and is connected to the transmission line at the proximal end of the hard cable 12, and a winding of the main body frame 11. A cable guide that is provided on the frame portion 11a and leads the hard cable 12 wound around the inner peripheral portion of the winding frame portion 11a to the outside of the winding frame portion from the opening 11b of the main body frame 11. Constituted by and a cable hook) 17.

  As shown in FIG. 2, the push-type in-pipe inspection camera device 1 shown in FIG. 1 has a central portion (the central portion of the reel portion 11a) surrounded by the reel portion 11a of the inner bottom surface 11c of the main body frame 11. A display monitor 15 is fixedly provided in the formed empty space 11s. The display monitor 15 is plug-in connected to one end of each of the video signal transmission line and the power transmission line included in the hard cable 12 wound around the winding part 11a of the main body frame 11 via a plug 15e. . The other end side of each transmission line included in the hard cable 12 is plug-in connected to the plug of the camera head 13.

  On the outer peripheral surface of the annular winding frame portion of the main body frame 11, the monitor screen 15 a of the display monitor 15 is aligned in the vertical direction so that the portable grip portion 23 can be attached to the upper portion. On the outer bottom surface 11e of the main body frame 11, as shown in FIGS. 2 and 3, two fixed legs 19 are provided at the upper part and one fixed leg 19 at the lower part. Further, on the outer bottom surface 11 e of the main body frame 11, a stand (rotating leg) 20 that tilts the monitor screen 15 a of the display monitor 15 obliquely rearward when the push-type in-tube inspection camera device 1 is used is a hinge of the hinge portion 21. With the center as a rotation fulcrum, it is provided so as to be rotatable between a folding position substantially parallel to the outer bottom surface 11e and a standing position shown in FIG. By setting the stand (rotating leg) 20 in the standing state, the monitor screen 15a of the display monitor 15 is inclined obliquely rearward at a predetermined angle with respect to the installation surface (EF), thereby facilitating visual recognition of the monitor screen 15a. Yes. In the configuration example shown in FIG. 3, a part of the box-shaped housing of the display monitor 15 is attached to the main body frame 11 so as to be exposed from the outer bottom surface 11e of the main body frame 11, and the housing exposed from the outer bottom surface 11e. A plurality of connectors (connectors) are provided on the side of the body. Here, a plug 15f for supplying external power and a plug 15g for outputting a video signal are provided. The external power supply plug 15f is plugged in via the power cable to the external power supply plug 15f, and an external device (for example, an image recording device) (not shown) is transmitted to the video signal output plug 15g. Plug-in connection is made through a cable. The display monitor 15 includes a charging battery that is charged and controlled by an external power source supplied to the plug 15f, and enables operation by the battery power source.

  The cable guide 17 is provided at the opening edge of the opening 11b of the main body frame 11 and functions as a lead-out guide for the hard cable 12 wound around the winding frame 11a. The cable guide 17 has a curved portion that is in sliding contact with the hard cable 12. In addition, the cable hook of the hard cable 12 is configured such that it protrudes inward from the opening 11b of the main body frame 11 and the front end protrudes in a direction intersecting with the lead-out direction of the hard cable 12. .

  As shown in FIGS. 4A and 4B, the cable guide 17 is formed by bending a metal rod having a predetermined diameter, and has a mounting portion 17a and a curved portion (hook-shaped portion) 17b. The tip of the main body frame 11 protrudes with a predetermined inclination angle toward the bottom. The cable guide 17 shown in FIG. 4 is formed by bending a metal rod having a diameter of 6 mm, which is close to the diameter of the hard cable 12, and its tip is 30 ° toward the bottom of the body frame 11 with respect to the opening surface of the opening 11b. The example of a structure which protruded with the inclination-angle of this is shown. Here, the cable guide 17 is attached to the main body by providing an attachment hole through which the set screw passes through the attachment portion 17a of the cable guide 17, and fastening the attachment portion 17a to the opening end of the winding frame portion 11a with the set screw. It is attached to the opening edge of the opening 11b of the frame 11, and the cable guide 17 can be removed. Another configuration example of the cable guide will be described later with reference to the drawings.

  The cable guide 17 provided at the opening edge of the opening portion 11b of the main body frame 11 is used when the hard cable 12 wound around the inner peripheral portion of the winding frame portion 11a is led out from the opening portion 11b to the outside of the winding frame portion. As shown in FIG. 5, it engages with the hard cable 12 drawn out from the opening portion 11b at the time of drawing, and the engagement action of this cable hook prevents the subsequent hard cable 12 from jumping out from the opening portion 11b. is doing. Specifically, at the opening edge of the opening portion 11b, each time the hard cable 12 for one turn wound around the winding frame portion 11a is drawn to the opening portion 11b, the hard cable 12 drawn to the opening portion 11b is The succeeding hard cable wound around the inner periphery of the winding frame portion 11a by being engaged with and hooked with the curved portion (hook-shaped portion) 17b of the cable guide 17 shown in FIG. No. 12 jumps out of the opening 11b continuously by the elastic action of the cable and prevents it from being led out unnecessarily.

  In the push-type in-pipe inspection camera device 1 having the above-described configuration, when the device is not used, the hard cable 12 including the camera head 13 is housed in the reel portion 11a.

  When the inside of the inspection target tube is inspected using the push-type in-pipe inspection camera device 1, the camera head 13 attached to the front end of the hard cable 12 housed in the winding frame portion 11 a of the main body frame 11 together with the hard cable 12. The camera head 13 pulled out from the opening 11b is inserted into the inspection target tube while operating the hard cable 12. The camera head 13 and the hard cable 12 are pushed into the inspection target tube while operating the hard cable 12, and the inside of the inspection target tube is photographed by the camera head 13. The video signal in the tube photographed by the camera head 13 is input to the display monitor 15 via the transmission line included in the hard cable 12, and thereby the image in the tube photographed by the camera head 13 is displayed on the monitor screen 15a.

  At the time of this in-pipe inspection, the necessary amount of the hard cable 12 is pulled out from the winding frame part 11a and inserted into the pipe. When the cable guide 17 is not provided, the hard cable 12 is wound around the winding frame part 11a when the cable is pulled out. The subsequent hard cable 12 that does not need to be led out pops out from the circular opening 11b by the elastic force of the cable. For this problem, by providing the cable guide 17 at the opening edge of the opening 11b of the main body frame 11, the curved portion (hook-shaped portion) 17b of the cable guide 17 is pulled out from the opening 11b of the hard cable 12. The subsequent hard cable 12 which is wound around the inner peripheral portion of the winding frame portion 11a and is still in the accommodated state jumps out of the opening portion 11b by the elastic action of the cable, This prevents problems that are unnecessarily derived. That is, the above-described cable guide 17 constitutes a cable hook of the hard cable 12 wound around the winding frame portion 11a and serves as a temporary stopper for the hard cable 12, and the annular winding frame portion 11a is By fixing the hard cable 12 in one place of the provided main body frame 11, the hard cable 12 is always hooked once in one turn when the hard cable 12 is taken in and out of the opening 11b, and thereby the subsequent hard cable 12 Can be prevented from popping out. Further, when the hard cable 12 led out from the opening 11b is stored (wrapped) in the winding frame portion 11a, the hook can be easily released by bending the hand-held hard cable 12, so that the cable can be stored easily. It can be done smoothly.

  As a result, it is possible to prevent the hard cable 12 wound around the winding frame portion 11a from jumping out of the opening portion 11b and to always lead out the hard cable 12 wound around the winding frame portion 11a from the opening portion 11b by a necessary amount. In-pipe inspection work can be carried out smoothly and safely.

  After the inspection of the inspection target pipe is completed, the operator removes the hard cable 12 from the cable guide 17 and manually winds the hard cable 12 pulled out from the opening 11b around the inner peripheral surface of the winding frame portion 11a. I will do it. At this time, the hard cable 12 engaged with the cable guide 17 can be disengaged only by removing the hard cable 12 from the tip of the cable guide 17 and can easily be disengaged.

  FIGS. 6, 7, and 8 show other first and second configuration examples of the cable guide mechanism in the push-type in-pipe inspection camera device 1 according to the embodiment of the present invention, respectively.

  Other first cable guide mechanisms shown in FIG. 6 and FIG. 7 are such that the cable guide is pivotally supported on the main body frame 11 and the inclination angle of the tip portion protruding toward the bottom of the main body frame 11 can be adjusted. A cable guide 17A having a polygonal axis A1 and an annular groove A2 is fixed to the main body frame 11. The cable guide 17A is fitted to the annular groove A2 so that the cable guide 17A can pivot on the main body frame 11. A supporting shaft 21 that is supported, and a pressing spring (plate spring) 22 that is fixed to the main body frame 11 and that makes surface contact with the polygonal shaft A1 with a predetermined pressure contact force and regulates the rotational position of the cable guide 17A in multiple stages. And is configured. In this cable guide mechanism, the inclination angle of the tip end portion of the cable guide 17A protruding toward the bottom portion of the main body frame 11 can be switched in multiple stages, and the hard cable 12 led out from the opening portion 11b can be switched to the winding frame portion 11a. The hook portion can be retracted from the opening edge of the opening portion 11b when being housed (wound).

  The other second cable guide mechanism shown in FIG. 8 is formed by integrally forming the cable guide constituting the cable hook with the main body frame 11, and projects inward of the opening 11b from the opening edge of the opening 11b. A hook-shaped cable guide 17B is configured by the plate-shaped portion.

  The above-described push-type in-pipe inspection camera device according to the embodiment of the present invention has a configuration in which a rotating drum for winding a hard cable and a slip ring mechanism are unnecessary, so that the entire device is made compact and easy to handle. Can be Furthermore, since the bottomed cylindrical main body frame is provided with a winding frame portion having an annular inner peripheral portion along the outer periphery of the frame as a winding frame, a resilient hard cable storage portion is provided. A cable guide that can be compactly configured and that prevents the cable from protruding from the opening of the subsequent cable when the hard cable wound around the inner periphery of the winding frame is led out is provided at the opening edge of the opening. Therefore, the hard cable wound around the winding frame portion can always be led out from the opening by a necessary amount, and the in-pipe inspection work can be carried out smoothly and safely.

The perspective view which shows the structure of the push-in type in-pipe inspection camera apparatus which concerns on embodiment of this invention. The top view which shows the structure of the push-in type in-pipe inspection camera apparatus which concerns on the said embodiment. The side view which shows the structure of the push type in-pipe inspection camera apparatus which concerns on the said embodiment. The figure which shows the cable guide structure of the push type in-pipe inspection camera apparatus which concerns on the said embodiment. The figure which shows the cable guide structure of the push type in-pipe inspection camera apparatus which concerns on the said embodiment. The top view which shows the other 1st cable guide structure of the pushing type in-pipe inspection camera apparatus which concerns on the said embodiment. The side view which shows the cable guide structure shown in the said FIG. The perspective view which shows the other 2nd cable guide structure of the pushing type in-pipe inspection camera apparatus which concerns on the said embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Push-in type tube inspection camera apparatus, 11 ... Main body frame, 11a ... Winding frame part, 11b ... Opening part, 11c ... Inner bottom face, 11e ... Outer bottom face, 12 ... Hard cable, 13 ... Camera head, 15 ... Display monitor, 17, 17A, 17B ... Cable guide.

Claims (5)

A bottomed cylindrical body frame having an annular winding frame and a circular opening; and
A hard cable having elasticity, including a transmission line of a video signal, wound around the inner periphery of the winding frame, and taken in and out of the opening;
A camera head attached to the tip of the hard cable and connected to the transmission line by a circuit;
A display monitor attached to the main body frame and circuit-connected to the transmission line;
A cable guide provided in the winding frame portion and for guiding the hard cable wound around the inner periphery of the winding frame portion to the outside of the winding frame portion from the opening;
A push-type in-pipe inspection camera device characterized by comprising:   2. The push-type in-pipe inspection camera device according to claim 1, wherein the cable guide has a hook shape provided at an opening edge of the opening and having a curved portion in sliding contact with the hard cable.   The cable guide protrudes inward from the opening of the main body frame, and a distal end of the cable guide protrudes in a direction intersecting with a direction in which the hard cable is led out. 2. A push-type in-pipe inspection camera device according to 2.   In the cable guide, the distal end projects with a predetermined inclination angle toward the bottom of the main body frame, and the hard cable wound around the inner periphery of the winding frame is passed through the opening from the opening. At the time of derivation leading out to the outside of the frame portion, the hard cable is engaged with the hard cable to prevent the hard cable wound around the inner periphery of the winding frame portion from jumping out from the opening. The push-type in-pipe inspection camera device according to claim 3.   5. The push-type in-pipe inspection camera device according to claim 4, wherein the cable guide is pivotally supported by the main body frame so that the inclination angle of the distal end portion can be adjusted.

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