JPS6013179Y2 - multi-pole plug - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a multi-pole plug with a shield structure.

Conventionally, this type of multi-pole plug according to the German Industrial Standard (DIN), as shown in Figure 1, has a 3- to 6-pole connection terminal B surrounded by a shield tube A, which is insert molded into an insulating base C. Since the connecting terminal B and the electric wire are connected by soldering, the connecting terminal B
The problem was a decrease in production efficiency due to insert molding, and inefficient soldering due to work and unstable reliability.

This invention attempts to solve the above-mentioned drawbacks.
To describe this in detail with reference to the illustrated embodiment, the multi-pole plug according to the present invention includes a connecting terminal 1, a base member 2 and a pressing member 3 whose bottom is made of an insulating material, a metal shield cylindrical body 4, It is composed of an insulating cover 5.

The connecting terminal 1 is formed into a pin-shaped contact 1a, and an electric wire 6 is electrically crimped and connected to the rear part by a crimping part 1b, and there is a wire between the contact 1a and the crimping part 1b. A fixing protrusion 1c is provided to protrude in a direction orthogonal to the axial direction of the connection terminal 1.

The base member 2 and the presser member 3 each have an outer peripheral surface 2a*3
a has the same cylindrical shape, and a plurality of locking protrusions 2c and 3c of the same size are protruded from the joint surfaces 2b and 3b of the circular outer peripheral surfaces 2a and 3a, respectively. The height and thickness of both locking protrusions 2cv3c are the same as the thickness of the shield cylindrical body 4.

A plurality of terminal insertion holes 7 are provided in the base member 2 in the axial direction along the cylindrical portion 2d protruding from the center of the joint surface 2b. The portion 7a is sized to accommodate the fixing protrusion IC of the connecting terminal 1, and the front half 7b is sized to allow the contact 1a of the connecting terminal 1 to be inserted therethrough.

The presser member 3 is ring-shaped, and may be formed into a partially cut-off shape 8 as shown in FIG. 3, or a complete ring shape as shown in FIG. 4.

However, the size of the inner circumferential portion 3d of the presser member 3 is such that the crimp portion 1b is accommodated within the inner circumferential portion 3d when the connecting terminal 1 is attached to the terminal insertion hole 7 and is joined to the base member 2. It is necessary to form the projecting piece 1c so that it can abut against the joint surface 3b of the presser member 3.

The shield cylindrical body 4 has a shape that allows it to be in close contact with the outer peripheral surfaces 2a and 3a of the base member 2 and the holding member 3, but in the embodiment shown in FIG. 3, the shield cylindrical body 4 is divided into two parts. FIG. 4 shows an embodiment in which a part of the cylinder is cut away.

A locking window 4a is bored in the peripheral wall of the shield cylindrical body 4, into which the locking projections 2C93C of the base member 2 and the holding member 3 are inserted when they are joined.

FIG. 5 shows another embodiment of the multi-pole plug according to the present invention, in which the locking protrusion 2C of the base member 2 is further provided with an insulating cover 5.
The only difference from the previous embodiment is that the height is increased by the wall thickness, and a locking window 5a is bored in the insulating cover 5 into which the increased locking protrusion 2C fits, and other than that, the structure is exactly the same. be.

The present invention is constructed as described above, and its assembly will be explained below.

First, when using the presser member 3 having the cutout part 8 as shown in FIG. , the presser member 3 is fitted from the side through the cutout 8 into the portion of the cylindrical portion 2d protruding from the joint surface 2b of the base member 2, so that both the joint surfaces 2b of the presser member 3 and the base member 2 are joined; 3b.

As a result, the fixing protrusion 1c of the connection terminal 1 is clamped.

Both the locking protrusions 2c and 3 of the base member 2 and the presser member 3
c are integrally aligned, the shield cylindrical body 4 is fitted onto both members 2 and 3, and the above-mentioned locking protrusion 2C93C is inserted into the locking window 4a.
If the base member 2 and the holding member 3 are fixed inseparably by fitting, the connecting terminal 1 cannot be pulled out in the axial direction.

Next, the insulating cover 5 may be attached to the shield cylindrical body 4, and in the case of the embodiment shown in FIG. insert.

Next, when using the complete ring-shaped holding member 3 shown in FIG. 4, the connection terminal 1 is inserted into the terminal insertion hole 7 of the base member 2 after passing through the insulation cover 5 and the holding member 3. The subsequent assembly is exactly the same as in the previous embodiment.

As described above, in the present invention, the connecting terminal 1 and the electric wire 6 are connected by crimp connection, and after the crimp connection is made, the terminal is inserted into the terminal insertion hole 6, so that the connection condition is consistent and reliability is high. , Automated connection using a crimping machine makes connection work highly efficient.

Further, since there is no need to embed the connection terminal 1 in the base member 2 and the holding member 3, mass production is possible by injection molding.

Further, the connecting terminal 1 crimped and connected to the electric wire 6 has its fixing protrusion 1c clamped between the base member 2 and the holding member 3, and both members 2 and 3 have locking protrusions 2c, 3c. By fitting into the locking window 4a of the shield cylindrical body 4, they are inseparably joined, so that the connecting terminal 1 is fixed in the axial direction so that it cannot be pulled out.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing a conventional multipolar plug, Fig. 2 is a partially cutaway side view showing an embodiment of the multipolar plug according to the present invention, and Fig. 3 is a partially cutaway side view showing the same component. FIG. 4 is a perspective view showing another embodiment of some of the constituent members, and FIG. 5 is a partially cutaway side view showing another embodiment of the multipolar plug of the present invention. 1... Connection terminal, 1b... Crimp part, 1
c... Fixing protrusion, 2... Base member, 2c, 3e... Locking protrusion, 3... Pressing member, 4... ...Shield cylindrical body, 4a...
... Locking window, 5 ... Insulation cover, 6 ...
・Electric wire, 7...Terminal insertion hole.

Claims (1)

[Scope of utility model registration request] A base member and a holding member are molded with an insulating material, and a connecting terminal with an electric wire crimped and connected is inserted into a terminal insertion hole formed in the base member, and a fixing protrusion protruding from the terminal is connected to the base member. The base member and the holding member are clamped and fixed together, and the locking protrusions protruding from the outer peripheral surfaces of the base member and the holding member are fitted into the locking windows of the shield cylindrical body attached to both members, and the shield cylindrical body A multi-pole plug with an insulating cover attached to the top.