JPH052389U - Pin plug - Google Patents

Abstract

(57) [Summary] [Purpose] Stabilize the quality of pin plugs and facilitate assembly. [Structure] A pin 1 having a core wire of an electric wire 5 connected to the center of a base 3 of a substantially cylindrical insulator, and a base 2 around which a shield of the electric wire 5 is crimped is fitted to fit the whole body. Cover with the outer cover 4. The mouthpiece 2 has an opening D through which the pin 1 can pass, following a substantially complete circular cylindrical portion 2a.
The C-shaped portion 2b having the shape, the semicircular portion 2c engaged with the concave groove 9 of the base 3 and the shield crimp portion are provided, and the shield crimp portion is housed in the recess provided in the base 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pin plug used for electrical connection of, for example, an audio device and other types of electric devices.

[0002]

[Prior Art]

 Conventionally, as disclosed in, for example, Japanese Utility Model Publication No. 2-12699, a pin plug of this type has a substantially cylindrical shape in which a pin-shaped internal contact member to which a core wire of an electric wire is connected is connected by a hinge portion. It is known that the outer contact member with a C-shaped cross section, in which the wire shield is connected, is covered with the inner insulating member, and the whole is covered with the outer insulating member. There is.

[0003]

[Problems to be solved by the device]

 However, in this type of pin plug, it is necessary to connect the inner contact member and the outer contact member to the electric wire in advance and then insert the inner insulating member. Therefore, the outer contact member needs to have an incomplete cylindrical shape with a C-shaped cross section. Therefore, there are problems such as structural instability and inconsistent quality, uncertain contact with the connecting jack, and poor assembly workability.

An object of the present invention is to provide a pin plug that can obtain stable quality with a small number of parts and is easy to assemble.

[0005]

[Means for Solving the Problems]

 The pin plug according to the present invention for achieving the above-mentioned object has a pin, which is a conductive terminal, fixed to the central portion of a base made of an insulating material, and a base which is crimped to the shield of the wire is fitted to the outside of the base, In the pin plug having the outer cover covered with an outer cover, a member for regulating the positional relationship between the base and the C-shaped part having an opening for inserting the pin is provided next to the cylindrical part having a substantially complete circular shape. A stop part and a shield crimping part are provided, and the shield crimping part is housed in a recess provided in the base.

[0006]

[Action]

 In the pin plug having the above-mentioned configuration, after connecting the pin, which is a conductive terminal, and the base to the electric wire, the pin is fixed to the base, the pin is passed through the opening of the C-shaped part of the base, and the base is fitted inside the base. If the outer cover is covered with the shield crimping part of the base accommodated in the recess of the base, the mutual positional relationship between the pin and the base, the base and the base, and the base and the wire is determined.

[0007]

【Example】

 The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a cross-sectional view of the embodiment, FIG. 2 is a side view in which a part is shown in cross section, and FIG. 3 is a bottom view showing a rod-shaped pin 1 that is a conductive terminal and a substantially cylindrical base 2. It is composed of a substantially cylindrical base 3 made of an insulator that electrically insulates the space between them and holds its positional relationship fixed, and an outer cover 4 made of synthetic resin that covers the whole. The core 6 of the electric wire 5 is connected to the rear end of the pin 1, while the shield 7 of the electric wire 5 is connected to the base 2 by crimping.

The pin 1 is held by the base 3 in a state of penetrating the center portion of the base 3 in the axial direction, and a base 2 is fitted around the base 3. Various methods can be used to fix the pin 1 to the base 3, for example, by forcibly fitting the pin 1 into an axial hole provided in the base 3 to prevent the pin from coming off properly. In the example shown, the base 3 made of insulating synthetic resin has an open / closed two-part structure in which it is connected by an axial hinge, and the pin 1 is sandwiched between them to close it. In, S represents the closed surface. FIG. 5 is an external view of the base 3, and FIG. 6 is a bottom view of the base 3. A locking groove 8 for locking the outer cover 4 and a base 2 are locked on the outer periphery of the base 3. A concave groove 9 for holding the shield, a concave portion 10 for accommodating the shield crimp portion, and a step portion 11 and the like are formed on the front end side.

FIG. 7 shows a perspective view of the base 2, FIG. 8 is a sectional view, and FIGS. 9 (a), (b), and (c) are AA, BB, C- of FIG. 8, respectively. A sectional view along line C is shown. The base 2 formed by bending a conductive metal plate has a perfect cylindrical portion 2a having a substantially circular shape, as shown in FIGS. 7 to 9, and an opening D for allowing the pin 1 to pass from the lateral direction. It has an open C-shaped portion 2b, a semi-circular portion 2c engaged with the groove 9 of the base 3, and a shield crimping portion 2d for crimping the shield 7 of the electric wire 5.

The outer cover 4 complements the function of the base 3, protects a main part as an electrical component when used, complements the bending strength of the electric wire 5, and further improves the design appearance of the entire product. And a convex ring-shaped lock portion 4a that engages with the locking groove 8 of the base 3 is formed on the inner surface thereof.

To assemble these parts, first, the pin 1 and the base 2 are connected to the electric wire 5, and the pin 1 is fixed to the base 3. Next, the pin 2 is fitted through the opening D of the C-shaped part 2b of the base 2 into the outer periphery of the base 3, and the semicircular portion 2c of the base 2 is engaged with the groove 9 of the base 3 and The shield crimp portion 2d is housed in the recess 10. Next, the entire outer cover 4 is covered, and the lock portion 4a is engaged with the locking groove 8 of the base 3 to complete the assembly.

In the above-described embodiment, as means for locking the base 2 and the base 3, only the case where the semicircular portion 2c of the base 2 is engaged with the concave groove 9 provided in the base 3 is shown. As shown in FIG. 10 and FIG. 11, a cut-out tongue piece 13 may be provided at the bottom of the mouthpiece 2 and the tongue piece 13 may be hooked on the stepped portion 14 of the base 3. The locking means formed by the cut-out tongue piece 13 and the stepped portion 14 may be replaced with the locking means formed by the concave groove 9 and the semicircular portion 2c, or may be used together.

[0013]

[Effect of the device]

 As described above, in the pin plug according to the present invention, the positional relationship between the pins, which are conductive terminals, and the base is securely held by the base, so that it is possible to mass-produce pin plugs of stable quality with a small number of parts with good workability. it can.

[Brief description of drawings]

FIG. 1 is a sectional view of an example.

FIG. 2 is a side view in which a part of the state excluding the outer cover is shown as a cross section.

FIG. 3 is a bottom view of a state in which an outer cover is removed.

FIG. 4 is a front view of a state in which an outer cover is removed.

FIG. 5 is a perspective view of a base.

FIG. 6 is a bottom view of the base.

FIG. 7 is a perspective view of a base.

FIG. 8 is a cross-sectional view of a die.

9 is a cross-sectional view taken along the lines AA, BB, and CC of FIG.

FIG. 10 is a cross-sectional view of another example of a mouthpiece.

FIG. 11 is a side view with a part in section.

[Explanation of symbols]

 1 pin 2 base 3 base 4 outer cover 5 electric wire 6 core wire 7 shield 8 locking groove 9 concave groove 10 concave 11 step

Claims (1)

[Claims for utility model registration] [Claim 1] Pins, which are conductive terminals, are fixed to the center of a base made of an insulator, and a cap crimped to the shield of the electric wire is fitted to the outside of the base to cover the entire outer cover. In the pin plug covered with the above, the locking portion and the shield crimping portion for restricting the positional relationship between the base and the C-shaped portion having an opening portion for allowing the pin to pass through are provided on the base after the substantially complete circular cylindrical portion. And a shield crimp portion is housed in a recess provided in the base.