JPH033978Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a wire fixing mechanism for simultaneously fixing the wires connected to the connecting terminals to the housing when the connecting terminals are inserted into the connector housing etc. It is.

[Conventional technology]

For example, when a connecting terminal is fixed to a housing, if the electric wire connected to the connecting terminal is not also fixed, the connection between the connecting terminal and the electric wire may be severed if excessive force is applied to the electric wire. There are probably many.

[Purpose of invention]

An object of the present invention is to solve the above-mentioned problems and provide a wire fixing mechanism for reliably fixing the wire to the housing.

[Summary of the idea]

The gist of this invention to achieve the above objectives is as follows:
In the case where the electric wire is fixed inside the cylinder of the housing via a sealing member, a sealing member having a cylindrical front part and a corrugated outer circumference at the rear part is inserted into the electric wire, and the front end part has a tubular insertion part. By inserting a stopper having a seal crimping part having a U-shaped cross section in its rear end, and crimping the front part of the seal member from its outer periphery with the seal crimping part of the stopper, the stopper is secured. The electric wire fixing mechanism is characterized in that the electric wire is fixed to the electric wire via the sealing member, and the stopper is fixed in the axial direction of the housing by a locking means provided on the outside of the insertion portion of the stopper. .

[Example of idea]

The present invention will be explained in detail based on illustrated embodiments.

FIG. 1 is a cross-sectional view of a housing 3 that is attached to a housing of an electrical device or the like, with an electric wire 1 drawn in from the outside and a solder terminal 2 protruding inside. The electric wire in this case is an example of a multi-core electric wire, and a solder terminal 2 is crimped and connected to each core wire of the electric wire 1, and the solder terminal 2 is housed in a housing chamber 3a in a housing 3, respectively.
Then, the covering portion 1a of the electric wire 1 is inserted into the cylindrical portion 3b of the housing 3, and is locked within the cylindrical portion 3b. A fastener 4 shown in FIG. 2 is used to lock the electric wire 1. As shown in FIG. It is designed to be fixed to the rear part via a sealing member 5 having a corrugated concave and convex portion on the outer periphery. That is, this fastener 4 is made by punching out a metal plate, and the rear end portion has a tubular insertion portion 4a for fitting into the outer periphery of the covering portion 1a of the electric wire 1.
The front end portion is a U-shaped seal crimping portion 4b for crimping the seal member 5. Cut-and-raised portions 4c are formed at a plurality of locations of the insertion portion 4a as means for locking with the housing 3, and these cut-and-raised portions 4c are cut and raised from both sides along the longitudinal direction.
The center side is lifted outwards and a slight gap is provided. Moreover, inside the seal crimping part 4b,
Convex portion 4 for facilitating fixation to seal member 5
d is provided.

Therefore, by caulking the cylindrical body of the seal member 5 from the outer periphery with the seal crimping portion of the stopper 4, the stopper 4 is fixed to the covering portion 1a of the electric wire 1, and the rear end of the housing 3 When the electric wire 1 is inserted into the housing 3 together with the solder terminal 2, the cut-and-raised portion 4c fits into the ring-shaped protrusion 3c provided on the housing 3, so that the electric wire 1 is fixed to the housing 3. .

In this manner, the protruding strip 3c of the housing 3 is fitted between the pair of cut and raised portions 4c, whereby the electric wire 1 is fixed in this state and cannot move forward or backward. Further, the sealing member 5 is located between the housing 3 and the electric wire 1, and plays the role of a cushioning material between them, and also performs waterproof and dustproof functions.

FIG. 4 shows a stopper 4 of another embodiment, in which the insertion portion 4a is provided with a grooved portion 4e in the circumferential direction as a means for locking with the housing 3. The electric wire 1 is fixed via the sealing member 5 as shown in FIG. 5 by this stopper 4, and the housing 3 shown in FIG.
Insert into. The cylindrical portion 3b of the housing 3 is provided with notches 3d on both sides that penetrate to the inside, and a U-shaped spring fitting 6 shown in FIG. 7 is fitted into this notch 3d as shown in FIG. It is becoming more and more common. This spring metal fitting 6 has elasticity, and by fitting it into the notch 3d of the housing 3 in advance, when the electric wire 1 is inserted, the spring metal fitting 6
is fitted into the concave portion 4e of the stopper 4, and the electric wire 1 can be fixed in the same manner as in the case of FIG.

[Effect of idea]

As explained above, the electric wire fixing mechanism according to the present invention fixes the stopper to the electric wire through the sealing member, and allows the locking means provided on the stopper and the locking part of the housing to cooperate with each other. Since the electric wire can be fixed in the axial direction, the workability is extremely good and the electric wire can be fixed securely.

[Brief explanation of the drawing]

The drawings show an embodiment of the electric wire fixing mechanism according to the present invention, in which Fig. 1 is a cross-sectional view of the device fixed to the housing, Fig. 2 is a perspective view of the fastener, and Fig. 3 is the fastener fixed to the wire. Fig. 4 is a perspective view of the fastener of another embodiment, Fig. 5 is a perspective view of the fastener fixed to the wire, Fig. 6 is a perspective view of the housing, and Fig. 7 is a perspective view of the spring. FIG. 8 is a front view of the metal fitting and a perspective view of the electric wire fixed to the housing. 1 is an electric wire, 2 is a soldering terminal, 3 is a housing, 3a is a storage chamber, 3b is a cylindrical portion, 3c is a convex strip,
3d is a notch, 4 is a stopper, 4a is an insertion portion, 4
b is a seal crimping part, 4c is a cut and raised part, 4d is a convex part, 4e is a grooved part, 5 is a sealing member, and 6 is a spring fitting.

Claims (1)

[Claims for Utility Model Registration] 1. In the case where an electric wire is fixed inside a cylinder of a housing via a sealing member, a sealing member having a cylindrical front portion and a corrugated outer circumference at the rear portion is inserted into the electric wire, and A stop fitting having a tubular insertion portion at the front end and a seal crimping portion having a U-shaped cross section at the rear end is inserted, and the front portion of the seal member is inserted from the outer periphery by the seal crimping portion of the stop fitting. The stopper is fixed to the electric wire via the seal member by crimping, and the stopper is fixed in the axial direction of the housing by a locking means provided on the outside of the insertion part of the stopper. A wire fixing mechanism featuring: 2. Fixing of the stopper to the housing includes:
The electric wire fixing mechanism according to claim 1, wherein the electric wire fixing mechanism is achieved by fitting an annular protrusion provided inside the cylinder of the housing with a cut-and-raised portion provided on the stopper.