JPH0917499A - Cable fixing structural body - Google Patents

Abstract

PURPOSE: To provide a cable fixing structural body in which a cable is surely fixed and the damage to the cable is prevented. CONSTITUTION: First and second halved bodies 10, 20 are combined together to form a cylindrical body 3 for fixing a cable 4. The cable 4 is extended through a ferrule 40, and the ferrule 40 is pressed onto the cable 4 and held by projections 19, 29 and a wall surface 22a. Further, the cylindrical body 3 is fastened by a C-shaped ring member 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable fixing structure for fixing a cable when connecting the cable to an electric component, for example.

[0002]

BACKGROUND OF THE INVENTION Electrical connectors are commonly used to connect cables to electrical components. However, when the electric parts connected to the cable are frequently moved, when tension acts on the cable due to the movement of the electric parts, this tension acts on the connection point between the cable and the electric parts to connect them. There is a risk of instability and loss of connection reliability. As such an electric component that is frequently moved, for example, a hand-held type ultrasonic probe used in an ultrasonic diagnostic apparatus can be cited. A cable is connected to this handheld ultrasonic probe, and the ultrasonic probe converts the received ultrasonic signal into an electric signal, and this electric signal is transmitted through the cable and sent to the analysis device. To be Therefore, when the ultrasonic probe is frequently moved on the surface of the patient's body and a tension is applied to the cable, this tension acts on the connection point between the cable and the electric component and the connection becomes unstable, resulting in an inaccurate connection. It may not be possible to make a diagnosis. Therefore, it is conceivable to use the electric connector by fixing the cable to the electric connector so that the tension acting on the cable does not act on the connection portion between the cable and the electric component. As an electrical connector capable of fixing the cable in this way, an electrical connector in which a grip portion for gripping the cable is formed in the housing of the electrical connector (see Japanese Utility Model Laid-Open No. Sho 64-20686), or a projection that bites into the cable is provided in the electrical connector. 2. Description of the Related Art There is known an electric connector (see Japanese Utility Model Laid-Open No. Sho 64-18585) which is formed on a housing to fix a cable. There is also known an electrical connector in which a fixing member is prepared separately from the housing and the fixing member is attached to the housing to fix the cable (see Japanese Patent Laid-Open No. 63-48782).

[0003]

Among the various electrical connectors described above, the one in which the housing has the grip portion does not grip the cable sufficiently, so that the tension acting on the cable causes the cable and the electrical component to be tensioned. It may act on the connection point with and reduce the reliability of electrical connection. In addition, in the electrical connector provided with the protrusion that bites into the cable and the fixing member,
These protrusions and fixing members may damage the cable, and the damaged portion may be deformed and the cable may not be gripped sufficiently.

In view of the above circumstances, it is an object of the present invention to provide a cable fixing structure which surely fixes a cable and prevents damage to the cable.

[0005]

The cable fixing structure of the present invention for achieving the above object has a cavity inside,
A cable fixing structure that includes a tubular body having a cable insertion hole for inserting a cable in the cavity formed at an end thereof, and fixes the cable in a state in which a tip end of the cable is inserted into the cable insertion hole. And (1) a ferrule that is arranged in the cavity and through which the cable penetrates, (2) forms the tubular body by being united with each other, and each is cracked along the longitudinal direction of the tubular body. (3) A C-shaped ring member for tightening the combined first and second halves is provided. (4) The first and second halves It is characterized in that the half-split body has a recess in which the cable insertion hole is formed by the union, and a projection and a wall surface for holding the ferrule disposed in the cavity.

[0006]

In the cable fixing structure of the present invention, the cable is passed through the ferrule, and the ferrule is attached to the first and second ferrules.
Placed in one of the halves of the
The first and second halves are combined so that the cable is sandwiched by the concave portions of the halves. In this state, the C-shaped ring member is used to tighten the first and second halves. As a result, the ferrule is held by the projections and the wall surfaces of the first and second halves, and the cable is securely fixed to the combined first and second halves.

[0007]

EXAMPLE An example of the cable fixing structure of the present invention will be described below. FIG. 1 is a sectional view showing a cable fixing structure to which a cable is fixed, and FIG. 2 is a sectional view showing a state in which a first half body of the cable fixing structure is removed.
FIG. 3 is a perspective view showing a part of the second half body and the ferrule.

The cable fixing structure 1 is a first half-split body 1.
No. 0 and the second half-split body 20 are provided, and the first and second half-split bodies 10, 20 are combined to form the tubular body 3 having the cavity 2 formed therein. An opening 20a is formed in the side wall of the second half body 20, and here, it is assumed that the ultrasonic probe 6 is attached to the cavity 2 through the opening 20a. The conductive wires 4a of the cable 4 are connected to predetermined terminals (not shown) of the ultrasonic probe 6, respectively.

Recesses 12 and 22 are formed in the first and second halves 10 and 20, respectively, and the cavity 2 is formed by combining the first and second halves 10 and 20. A cable insertion hole 5 for inserting the cable 4 is formed therein. When the first and second half-divided bodies 10 and 20 are combined, the convex portion 14 formed at the front end portion of the first half-divided body 10
Is fitted into the groove 24 formed in the front end portion of the second half body 20. Further, the cable fixing structure 1 is provided with a C-shaped metal ring member 30 in order to secure the strength of the united body. Projecting portions 32 projecting inward are formed at both ends of the ring member 30. This ring member 30
Is fitted in a ring groove 26 formed on the outer periphery of the wall forming the recess 22 of the second half body 20, while the protrusion 32 of the ring member 30 is formed in the recess 12 of the first half body 10. It is locked in a locking recess 16 formed on the outer periphery of the wall forming the. By fitting the recess 14 into the groove 24 and the ring member 30 described above, the first and second halves 10, 20 are firmly combined.

The cable fixing structure 1 is provided with a metal ferrule 40 through which the cable 4 penetrates. The ferrule 40 is fixed to the cable 4 after being capped on the cable 4 and then crimped. A cutout 42 is formed in the ferrule 40. Ferrule 40 through which cable 4 penetrates
Is arranged in a portion 2 a of the cavity 2 adjacent to the cable insertion hole 5. Part 2a where this ferrule 40 is placed
The notch protrusion 1 that fits into the notch 42 of the ferrule 40.
8 and 28 and projections 19 and 29 that restrict the forward movement of the ferrule 40 are formed. In FIG. 3, the notch protrusion 28 and the protrusion 29 of the second half-divided body 20 are clearly shown.
Since the notch protrusions 18 and 28 are fitted into the notches 42 of the ferrule 40, the ferrule 40 is prevented from rotating in the circumferential direction.
Further, since the ferrule 40 fixed to the cable 4 is restricted from moving in the axial direction of the cable 4 by the projections 19 and 29 and the wall surface 22a, the cable 4 is securely fixed to the tubular body 3.

To fix the cable 4 to the cable fixing structure 1, the cable 4 is attached to the rubber boot 50 and the ferrule 4.
0, the ferrule 40 is placed in the cavity 2 of either one of the first and second halves 10, 20, and the cable is formed in the recesses 12, 22 of the first and second halves 10, 20. Four
The first and second half-divided bodies 10 and 20 are combined so as to sandwich. In this state, the ring member 30 is used to tighten the first and second halves 10, 20. Thereby, as described above, the ferrule 40 is provided between the wall surface 22a and the projections 19 and 29 of the first and second half bodies 10 and 20.
The first and second halves 10, 20 in which
The cable 4 is securely fixed to the. Further, the rear end portion of the tubular body 3 is inserted into the rubber boot 50 to further strengthen the union of the first and second halves 10, 20. The rubber boot 50 disperses and relaxes the gouging force when the cable 4 is gouged. When the cable 4 is pulled in its longitudinal direction, the ferrule 40 comes into contact with the wall surfaces 12a and 22a to prevent the cable 4 from coming off. After fixing the cable 4 to the tubular body 3, the cavity 2 may be filled with a resin such as epoxy so as to be waterproof, and the entire cable fixing structure may be washed with water.

As described above, according to the cable fixing structure 1, the cable 4 is fixed by the ferrule 40 to prevent the cable 4 from rotating in the circumferential direction and being pulled out in the axial direction. Even if the ultrasonic probe 6 is frequently moved on the body surface of the patient and a tension acts on the cable 4, this tension does not act on the connection portion between the cable 4 and the ultrasonic probe 6, Accurate diagnosis is possible.

[0013]

As described above, according to the cable fixing structure of the present invention, the combined first and second halves are connected to C
Tighten using a letter-shaped ring member. As a result, the ferrule is held by the projections and the wall surfaces of the first and second halves, and the cable is securely fixed to the combined first and second halves.

[Brief description of the drawings]

FIG. 1 shows a cable fixing structure to which a cable is fixed. (A) is a vertical sectional view of the cable fixing structure, (b) is a BB sectional view of (a), and (c) is (a). 6C is a cross-sectional view taken along line CC of FIG.

FIG. 2 is a cross-sectional view showing a state in which a second half body of the cable fixing structure is removed.

FIG. 3 is a perspective view showing a part of a first half body and a ferrule.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable fixing structure 3 Cylindrical body 4 Cable 5 Cable insertion hole 10 First half body 12,22 Recessed portion 19,29 Protrusion 20 Second half body 30 Ring member 40 Ferrule

Claims (1)

[Claims] 1. A cylindrical body having a cavity inside and a cable insertion hole for inserting a cable into the cavity is formed at an end portion, and a tip end portion of the cable is inserted into the cable insertion hole. A cable fixing structure for fixing the cable in a closed state, wherein the cable penetrates the ferrule disposed in the cavity, and the tubular body is formed by uniting the ferrules with each other. First and second halves having a shape that is split along the longitudinal direction of the body, and a C-shaped ring member that tightens the first and second halves that have been joined, The first and second halves each have a concave portion in which the cable insertion hole is formed by the merging, and a protrusion and a wall surface for holding the ferrule disposed in the cavity. Structure.