JPH0334855Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention [Field of industrial application] The present invention relates to a connector in which a male terminal is inserted into an insulating housing, and in particular, it aims to miniaturize the electrical connector by improving the male terminal. This is what I did.

[Conventional technology]

Conventionally, there is a male terminal as shown in FIG. 5 as a male terminal used in an electrical connector. This male terminal a has a pin contact part b at the tip, a core wire crimping part c and an insulator crimping part d for connecting the insulator-coated wire w at the rear end, and has a locking part e for the housing in the middle. and the third
As shown in Figure (B), the flexible arm h and the locking portion e are engaged with each other in the housing hole g of the housing f.

[Problem that the invention attempts to solve]

The so-called pin terminal with the above structure is made by stripping the insulation of an insulator-covered wire, crimping it to the insulator-covered wire using a core crimping part c and an insulator crimping part d, and fixing it to a housing f by a locking part e. , is connected to the other male terminal at the pin contact part b, and each part b to e has a respective role.

Incidentally, in recent years, the number of electrical components installed in automobiles has increased dramatically, and there is a demand for miniaturization of connectors used for wiring these components. However, as mentioned above, the male terminal has a pin contact part b, a core wire crimping part c
As long as the basic configuration has the locking part e in addition to the insulator crimping part d, the overall length of the terminal will inevitably become longer, and the housing to accommodate it will also become longer, making it difficult to respond to miniaturization of the connector.

An object of the present invention is to solve the above problems and provide a connector with a structure suitable for miniaturization by improving the structure of the male terminal.

Structure of the invention [Means for solving the problem] In order to achieve the above object, the connector of the invention exposes the core wire at the terminal part of the insulator-covered electric wire,
It consists of a male terminal in which the exposed core wire is hardened by soldering and formed into a pin shape, and at the same time a housing locking member is fixed at the boundary between the core wire and the insulator, and an insulating housing having a terminal accommodation hole for the male terminal. A partition wall having a fitting hole for the locking member is provided in the rear half of the terminal accommodation hole, and a flexible arm extends toward the fitting hole from the terminal end of the opposing hole wall of the accommodation hole. and the male terminal is locked by engaging the flexible arm with the housing locking member inserted and fitted into the fitting hole.

〔Example〕

In Figure 1, A is the male terminal,
The core wire 2 at the end of the insulated wire 1 is exposed, the exposed core wire 2 is solidified by soldering to prevent it from fraying, and formed into a pin shape, and a housing locking member 4 is placed between the core wire 2 and the insulator 3. It is characterized by being firmly fixed.

The locking member 4 is a metal tapered pipe,
As shown in FIG. 2, it has a small opening 4a having approximately the same diameter as the core wire 2 and a large opening 4b having a larger diameter than the insulator 3. The fixation between the locking member 4 and the insulated wire 1 is as follows:
The core wire 2 can be solidified simultaneously by inserting the core wire 2 from the large opening 4b side, press-fitting the insulator 3, and immersing the small opening 4a side in an auto-solder bath, for example.

Note that the locking member is not limited to the metal tapered tube as described above, but as shown in FIG. It may also be a tube 4' with different diameters. Alternatively, the material may be a heat-resistant synthetic resin and the material may be fused to the insulator 3.

In FIG. 3A, reference numeral 5 denotes an insulating housing, in which a partition wall 8 having a fitting hole 7 for the locking member 4 is provided in the rear half of a terminal receiving hole 6 formed inside, and A pair of flexible arms 9, 9' extend from the end of the wall 6a toward the fitting hole 7.
is provided. The fitting hole 7 is formed in a tapered shape to accommodate the small opening 4a of the locking member 4, which is a tapered pipe, but in the case of the locking member 4' shown in FIG. It may be formed as a circular hole into which the core wire insertion tube 4a' is inserted.

[Effect]

In the above configuration, when the male terminal A is inserted into the terminal housing chamber 6 from the rear of the insulating housing 5, the pin-shaped core wire 2 moves forward in the fitting hole 7 and the tapered locking member 4 engages the pair of flexible pins. The deflection arms 9, 9' are pushed apart and deflected outward. By further applying pressure, the small opening 4a side of the locking member 4 is guided and fitted into the fitting hole 7, and the rear end of the large opening 4b is connected to the flexible arms 9, 9'.
At the point when the male terminal A gets over the terminal, the arms 9 and 9' elastically return to their original state, and their tips engage with the rear ends, and the male terminal A is locked in the terminal accommodation chamber 6.

As is clear from the comparison between A and B in Figure 3, since the male terminal A does not have a core wire crimping part and an insulator crimping part as in the conventional case, the length of the insulating housing 5 is increased by the length shown by the dotted line in the figure. The connector can be made smaller.

Further, unlike the conventional method in which the core wire and the terminal are connected by crimping, the core wire 2 itself functions as a pin contact portion, so there is no increase in resistance due to crimping, and the device is electrically superior. Furthermore, as shown in FIG. 3A, the insulated electric wire 1 and the flexible arm 9,
A bending space V is formed between 9'. Therefore, as shown by the two-dot chain line, the flexibility of the electric wire 1 is utilized to facilitate wiring.

Effects of the invention As explained above, according to the invention, as a male terminal of a connector, the core wire of an insulated wire is hardened by soldering and formed into a pin shape, and at the same time a locking member is fixed, so that the core wire itself can be used as a male terminal of a connector. Since a terminal is used, there is no need for a terminal as a separate member with a core wire crimping part and an insulator crimping part as in the past, and the length can be shortened, and there is no increase in resistance due to crimping. A compact connector with electrically superior terminals is obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the male terminal constituting the connector of the present invention, Fig. 2 is a sectional view of the same housing locking member, and Fig. 3 A and B show the connector of the present invention and the conventional terminal. It is a cross-sectional view showing the locked state, where A is the product of the present invention and B is the conventional product. FIG. 4 is a sectional view showing another locking member of the present invention, and FIG. 5 is a perspective view of a conventional male terminal. A...Male terminal, 1...Insulated wire, 2
... Core wire, 3 ... Insulator, 4, 4' ... Housing locking member, 5 ... Insulating housing, 6 ... Terminal accommodation hole, 7 ... Fitting hole, 8 ... Partition wall,
9,9′...Flexible arm.

Claims (1)

[Scope of utility model registration request] A male terminal is constructed by exposing the core wire at the end of an insulator-coated wire, solidifying the exposed core wire by soldering and forming it into a pin shape, and at the same time fixing a housing locking member to the boundary between the core wire and the insulator. an insulating housing having a terminal accommodation hole for the male terminal, and a partition wall having a fitting hole for the locking member is provided in the rear half of the terminal accommodation hole, and a terminal end of the opposing hole wall of the accommodation hole. A flexible arm is provided extending from the part toward the fitting hole, and the flexible arm is engaged with a housing locking member inserted and fitted into the fitting hole to lock the male terminal. connector.