JPH0546229Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a female connector among high voltage connectors used for connecting high voltage lead wires.

[Background technology]

A high-voltage female connector of this type, which is more reliable than conventional insert-molded products, has been separately proposed by the same applicant.

An example of this will be explained with reference to FIGS. 4 to 6. In this high-voltage female connector 12, a female terminal 15 having a triangular cross section and having two spring pieces 15a and a lead piece 15b is made of elastic resin. Inside the holder 14, which is made of rubber or the like and has a hollow part 14a with a triangular cross-section corresponding to the female terminal 15 on the front side (left side in the figure) and a slit 14b connected to the hollow part 14a on the rear side, there is a holder 14 on the front side thereof. Insert the lead piece 15b from the rear side of the holder 14 and bend it to more reliably prevent the female terminal 15 from coming off, and then attach the high voltage lead wire 16 to this lead piece 15b by soldering, caulking, etc. The connected wire is inserted and fixed into a cylindrical case 13 made of insulating resin so that there is no gap between it and the holder 14, and the high voltage lead wire 16 side of the case 13 is coated with epoxy resin or the like. It is filled with an insulating resin 17. 13a and 14c are ring-shaped protrusions for more firmly fixing the holder 14 within the case 13.

According to such a high-voltage female connector 12, even if the high-voltage lead wire 16 is bent during injection of the resin 17, there is a risk that the withstand voltage will decrease because the high-voltage lead wire 16 is inside the case 13 made of an insulating material. Since the holder 14 is made of an elastic material, the holder 14 does not have a negative effect on the elasticity of the female terminal 15, and stable elasticity can be obtained in the female terminal 15. It is also possible to use the elasticity of the resin 14 itself to reinforce the resin 17. Since the resin 17 during injection is blocked by the holder 14 and does not go around towards the female terminal 15, the resin 17 does not touch the inner surface of the female terminal 15. Effects such as no risk of adhesion and poor contact can be obtained.

[Purpose of invention]

However, in the high voltage female connector 12,
Referring to FIG. 5, since the length L ₀ of the spring piece 15a of the female terminal 15 is only about the diameter of the male terminal, and therefore the distance L ₁ between the fulcrum P and the force point Q is short, the tolerance of the diameter of the male terminal Spring piece 15a
There is still room for improvement in that the change in the spread angle α becomes large, which increases the variation in the fitting force with the male terminal (in other words, the force for inserting and removing the male terminal).

Further, as described above, the female terminal 15 is attached to the holder 14.
By bending the lead piece 15b in order to more reliably prevent it from coming off after being inserted into the
A gap is created between the holder 14 and the resin 1 from there.
7 may leak into the spring piece 15a, causing poor contact with the male terminal, or the spring piece 15 may leak into the spring piece 15a.
It should also be noted that the part a may bend slightly in the opposite direction to the bending direction of the lead piece 15b and come off the center axis of the case 13, etc., causing poor fitting with the male terminal. There is room for improvement.

Therefore, the object of this invention is to provide a high voltage female connector that is further improved in these respects.

[Means to achieve the purpose]

The high-voltage female connector of this invention has a female terminal formed by bending a plurality of spring pieces from the bottom toward the side where the male terminal is inserted, and a female terminal made of an elastic body with a cross section corresponding to the arrangement of each spring piece of the female terminal in the front side. Insert each slit into each spring piece from the rear side into a holder that has a shaped hollow part and a plurality of slits connected to the hollow part on the rear side and arranged in correspondence with the arrangement of each spring piece of the female terminal. The spring pieces are inserted through the holder so that the front part of each spring piece is located in the cavity, and the spring piece is inserted into the cylindrical case made of an insulating material so that there is no gap between it and the holder. A high-voltage lead wire is connected to the bottom of the female terminal, and the high-voltage lead wire side inside the case is filled with an insulating resin.

〔Example〕

FIG. 1 is a sectional view showing a high voltage female connector according to an embodiment of the invention. FIG. 2 is an enlarged perspective view of the female terminal in FIG. 1. FIG. 3 is an enlarged view of the holder shown in FIG. 1, with A being a front view, B being a left side view, and C being a right side view. Components equivalent to those in FIGS. 4 to 6 are given the same reference numerals, and the differences from the previous example will be mainly explained below.

In the high voltage female connector 22 of this embodiment,
The female terminal 25 is made by bending three spring pieces 25a from the bottom part 25b so that the arrangement is triangular toward the side where the male terminal is inserted (i.e., the front side), and the female terminal 25 is made of elastic resin, rubber, etc. A hollow portion 14a having a triangular cross-section corresponding to the arrangement of the spring pieces 25a of the female terminal 25 is provided in the front side, and a hollow portion 14a is provided in the rear side.
In the holder 14, which has three slits 14d connected to the terminal a and arranged in a triangular shape corresponding to the arrangement of the spring pieces 25a of the female terminal 25, each slit 14d is inserted into the gap between the spring pieces 25a of the female terminal 25. Each spring piece 25a is inserted so that the front side portion of each spring piece 25a is located inside the cavity 14a.

Then, the female terminal 25 inserted into the holder 14 as described above is fitted and fixed into the cylindrical case 13 made of insulating resin so that no gap is created between the female terminal 25 and the holder 14. Furthermore, the high voltage lead wire 16 is connected to the bottom portion 25b of the female terminal 25 by soldering or the like, and an insulating resin 17 such as epoxy resin is attached to the high voltage lead wire 16 side inside the case 13.
is filled with.

Note that the high voltage lead wire 16 connected to the bottom portion 25b
The timing of the connection is when the holder 1 into which the female terminal 25 is inserted is connected.
4 into the case 13 or after (however, before the resin 17 is injected).

In this high-voltage female connector 22, referring to FIG. 2, the length of each spring piece 25a of the female terminal 25 is made long without being influenced by the diameter of the male terminal, unlike in the case of the female terminal 15 described above. Therefore, the distance L ₂ between the fulcrum P and the force point Q is also the same as the female terminal 1 described above.
5 can be much larger than the distance L ₁ . Therefore, for variations in the diameter of the male terminals,
Since the variation in the spread angle of each spring piece 25a is reduced, variations in the fitting force are reduced, and a more stable fitting force can be obtained. Therefore, the reliability of contact with the male terminal is further improved.

Further, each spring piece 25a of the female terminal 25 is inserted into the holder 14 from the rear side through the slit 14d, and the bottom part 25b prevents the female terminal 25 from coming off forward. No bending work is required to prevent it from coming off.
Therefore, it is difficult to form a gap between each spring piece 25a and the holder 14, and therefore, when the resin 17 is injected, the spring pieces 25a in the cavity 14a of the holder 14
It is possible to more completely prevent the risk of leakage into the area and cause poor contact with the male terminal, and the defective rate is further reduced. Furthermore, since no bending is required, there is no fear that the female terminal 25 may be displaced from the center axis of the case 13 or the like, resulting in poor fitting with the male terminal.

Incidentally, the number of spring pieces constituting the female terminal as described above is not limited to three as illustrated, but may be a plurality of other pieces.

Alternatively, the holder 14 may be simply press-fitted into the case 13 and fixed without providing the above-described protrusions 13a and 14b on the case 13 and the holder 14.

In addition, in this example, the high voltage lead wire 16 is pulled out from the same axis as the direction in which the male connector is inserted and removed, but by appropriately bending the rear side of the case 13, the high voltage lead wire 16 can be pulled out from a right angle direction or from other angles. You can also

Further, a bushing (not shown) may be provided at the outlet of the high voltage lead wire 16.

[Effect of idea]

As described above, according to this invention, in addition to the above-mentioned effects obtained by the female connector separately proposed by the same applicant, the following effects can be obtained.

That is, since there is no need to bend the female terminal after it is inserted into the holder, resin leakage caused by this is eliminated, and the defective rate of the product can be further reduced. Furthermore, since there is no displacement of the female terminal due to the bending process, the fitting performance with the male terminal is also improved.

Furthermore, since the variation in the spread angle of each spring piece of the female terminal is small with respect to the variation in the diameter of the male terminal, a more stable fitting force can be obtained.

As a result of the above, a high voltage female connector with higher reliability can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a high voltage female connector according to an embodiment of the invention. FIG. 2 is an enlarged perspective view of the female terminal in FIG. 1. FIG. 3 is an enlarged view of the holder shown in FIG. 1, with A being a front view, B being a left side view, and C being a right side view. FIG. 4 is a sectional view showing an example of a high voltage female connector which is the background of this invention. FIG. 5 is an enlarged perspective view of the female terminal in FIG. 4. FIG. 6 is an enlarged view of the holder shown in FIG. 4, with A being a front view, B being a left side view, and C being a right side view. 13... Case, 14... Holder, 14a...
Hollow portion, 14d...slit, 16...high voltage lead wire, 17...resin, 22...high voltage female connector according to the embodiment, 25...female terminal, 25a...spring piece.

Claims (1)

[Scope of utility model registration request] A female terminal is formed by bending a plurality of spring pieces from the bottom toward the side into which the male terminal is inserted, and the female terminal is made of an elastic body and has a hollow part on the front side with a cross-sectional shape corresponding to the arrangement of the spring pieces of the female terminal, and a rear part. Inside the holder, which has a plurality of slits connected to the cavity and arranged in correspondence with the arrangement of the spring pieces of the female terminal, from the rear side, insert each slit into the spring pieces so that there are no gaps. The spring piece is inserted through the holder so that the front part of each spring piece is located in the cavity, and then inserted and fixed into a cylindrical case made of an insulating material so that there is no gap between it and the holder. A high-voltage female connector further comprising: a high-voltage lead wire connected to the bottom of the female terminal; and an insulating resin filled on the high-voltage lead wire side inside the case.