JP4405295B2 - Connecting bracket - Google Patents

Description

According to the present invention, a base portion of a bifurcated connecting metal fitting whose upper portion protrudes upward in a substantially trapezoidal shape is fixed to the distal ends of left and right fin bodies that are spaced apart according to the width of the camera. The present invention relates to a connection fitting to the bifurcated connection fitting of a camera adapter formed by connecting bodies.

When new wires / cables are to be passed through existing conduits, for example, from one manhole, a FRP wire rod with a camera attached to the tip is attached to the conduit by the camera. While searching for a gap, push forward, pull out the wire rod that has advanced to the other manhole from the manhole, connect new wires and cables to the wire attached to the wire rod, then call the wire rod It is done by the method of pulling back the line.

The construction method requires a space that allows an operator to directly grab and take out the nominal line of the wire rod, and there is a problem that the nominal line cannot be pulled out in a working environment where such a space cannot be secured. .
JP-A-10-70807 Japanese Patent Laid-Open No. 10-341637

The present invention has been made to solve the problems described in the background art, and it is possible to take out the nominal line even in a narrow space where the operator cannot directly grab the nominal line of the wire rod and take it out. The purpose is to provide a connecting bracket to a connecting bracket of a camera adapter to which a camera cable head for possible communication is attached.

The bases 3 and 3 of the bifurcated coupling metal fitting 2 whose center part protrudes upward in a substantially trapezoidal shape are fixed to the distal ends of the left and right fin bodies 1 and 1 that are spaced apart according to the width of the camera. A connecting bracket to the bifurcated coupling bracket 2 of the camera adapter formed by coupling the left and right fin bodies 1, 1,

(A) A rectangular through hole 5 is provided in the front half of the cylindrical body 4 with rounded ends, and a threaded hole for screwing a wire rod in the direction of the central axis of the cylindrical body 4 is provided in the latter half. 6 is engraved, and a hole 7 for inserting a wire rod is formed in communication with the screw hole 6.

(B) A notch 8 is provided at the center front of both side walls of the through-hole 5, and a taper a that is widened at the tip of the notch 8 is provided.

(C) Two gripping pieces 10 and 10 provided with hook-like claws 9 and 9 that are curved inwardly at the tip are provided side by side so that the hook-like claws 9 and 9 that are curved inwardly face each other, The bases of the gripping pieces 10 and 10 are pivotally supported on the shafts 11 extending to both side walls of the rear part of the through-hole 5 so that the hook-like claws 9 and 9 that are curved inward are always engaged with each other. The base of the two gripping pieces 10 and 10 is biased by a spring force.

It is a connection metal fitting characterized by being comprised as the above (i)-(c).

(1) Since the left and right fin bodies 1 and 1 are connected by a bifurcated connecting metal fitting 2 whose center portion protrudes upward in a substantially trapezoidal shape, it is easy to connect the connecting metal fitting 2 to the connecting metal fitting. is there.
(2) Since the hook-like claws 9, 9 that are curved inwardly of the tip ends of the two gripping pieces 10, 10 are engaged with each other by the spring force, the connecting bracket sandwiched between the claws 9, 9 2 can be securely gripped.
(3) Since the tapered taper a is provided at the tip of the notch 8, the connecting fitting 2 can be easily called into the notch 8.
(4) The FRP wire rod can be attached to the connection fitting by a simple operation of screwing the FRP wire rod into the screw hole 6.

Providing connection fittings to connecting brackets for camera adapters to which the camera head for wire passing can be taken out even in a narrow space where the operator cannot directly grab and remove the wire of the wire rod. The purpose is to adopt a bifurcated connection fitting with the central part protruding upward in a substantially trapezoidal shape, and two gripping pieces that are urged so that they always engage with each other with the claws provided at the tip facing each other It was realized by.

As shown in FIG. 1, the camera adapter to which the camera head attached to the tip of the wire rod is attached to the tip of the left and right fin bodies 1, 1 that are spaced apart according to the width of the camera is shown in FIG. As shown in FIG. 3, the base parts 3 and 3 of the bifurcated connecting metal fitting 2 whose center part protrudes upward in a substantially trapezoidal shape are fixed, and the left and right fin bodies 1 and 1 are connected as shown in FIG. Yes.

In FIG. 1, the camera head C and the connecting rod R are indicated by dotted lines. The fin bodies 1 and 1 are made of a hard resin such as polyamide resin, and as shown in FIG.

As shown in FIGS. 4 to 6, an example of the implementation of the connection fitting of the present invention is provided with a strip-like through hole 5 in the front half portion of the cylindrical body 4 with rounded ends, and the latter half portion. Further, a threaded hole 6 for threading the connecting rod is formed in the central axis direction of the cylindrical body 4, and a hole 7 for threading the connecting rod is formed in communication with the threaded hole 6.

A notch 8 is provided at the center front of both side walls of the through-hole 5, and a taper a that extends forward is provided at the tip of the notch 8. Accordingly, as shown in FIGS. 4 to 5, the front part of the through hole 5 of the cylindrical body 4 communicates and has a shape with a large opening, so that the connecting fitting 2 of the camera adapter is notched. 8 is easy to call.

Two gripping pieces 10, 10 provided with hook-like claws 9, 9 that are curved inwardly at the distal end are provided side by side so that the hook-like claws 9, 9 that are curved inwardly face each other. The base portion of 10 is pivotally supported by the transfer shaft 11 on both side walls of the rear portion of the through hole 5.

The base portions of the two gripping pieces 10 and 10 are urged by the spring force of the spring b so that the claws 9 and 9 are always engaged with each other. Accordingly, when the connecting fitting 2 of the camera adapter is passed through the hook-like claws 9 and 9 that are curved inward against the spring force of the spring b, the connecting fitting 2 is surely captured by the claws 9 and 9 and detached. I can't do it.

In the implementation, the bifurcated connecting bracket 2 of the camera adapter pushed into a predetermined narrow space by the wire rod is inserted into the camera adapter with the wire rod inserted into the narrow space, and is displayed on the monitor. While checking the position of the bifurcated connecting bracket 2 of the camera adapter, the bifurcated connecting bracket 2 is pushed into the hook-shaped claws 9 and 9 that are curved inward, and the camera adapter is used as a connecting bracket to the camera adapter of the present application. By connecting and pulling out the camera adapter from a narrow space, the nominal line attached to the wire rod is taken out. After that, for example, a new cable is connected to the call line, and then pulled in from a narrow space.

 In order to pull out a nominal line from a narrow space, connect wires / cables to the nominal line, and pull the wires / cables from the narrow space into a conduit, etc. It can be used as a member.

Perspective view of fin of camera adapter Perspective view of bifurcated connecting bracket Perspective view of camera adapter Side view of connecting bracket Longitudinal sectional view in FIG. Top view of the connection bracket

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fin 2 Bifurcated connection metal fitting 3 Base part of bifurcated connection metal fitting 4 Cylindrical body 5 Strip-shaped through-hole 6 Screw hole for threading rod thread 7 Hole for threading rod insertion 8 Notch 9 Curved inward A bowl-shaped claw 10 Grasping piece 11 Axis a Taper b Spring C Camera R Wire rod

Claims (1)

The base (3, 2) of the bifurcated connecting metal fitting (2) with the center protruding upward in a substantially trapezoidal shape at the tip of the left and right fins (1, 1) that are spaced apart according to the width of the camera. 3) is a connecting bracket to the bifurcated coupling bracket (2) of the camera adapter formed by fixing the left and right fin bodies (1, 1),
(B) A rectangular through hole (5) is provided in the front half of the cylindrical body (4) with rounded ends, and the latter half is connected in the direction of the central axis of the cylindrical body (4). A screw hole (6) for screwing the rod is engraved, and a hole (7) for inserting a wire rod is formed in communication with the screw hole (6).
(B) A notch (8) is provided at the center front of both side walls of the through-hole (5), and a taper (a) is provided at the tip of the notch (8).
(C) The two gripping pieces (10, 10) provided with the hook-shaped claws (9, 9) curved inward at the tip end are opposed to the hook-shaped claws (9, 9) curved inward. The base of the gripping piece (10, 10) is pivotally supported on the shaft (11) that is inserted between the side walls of the rear part of the through hole (5) and is curved inwardly. The base of the two gripping pieces (10, 10) is urged by a spring force so that the claws (9, 9) always mesh with each other.
It is the connection metal fitting characterized by being comprised as mentioned above.

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