JPS63202871A - Bending method of contact - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a contact bending method for bending a contact provided in an bent state in a space within a frame in an electronic component or the like.

(Prior Art) In general, in J3 electronic parts, etc., in order to connect the component internally inside the frame to the outside, a lead member etc. that makes a contact point that comes into contact with the component is inserted into the frame. In order to ensure reliable and good contact between the component and the contact, the contact is bent toward the component so that the elasticity of the bent portion causes the two to come into elastic contact.

FIG. 4 schematically shows an I-Lima capacitor, which is an example of this type of electronic component.

This trimmer capacitor has a hot lead 2, which is a type of lead member, integrally molded inside a frame 1 made of synthetic resin. The base 4 is insert-molded into the frame 1, and its W? & 4 are exposed in the receiving part 6 of the frame 1. A soter electrode 8 having an M electric body 7 formed on its lower surface is placed in the receiving part 6 so as to be in elastic contact with the contact 5, and a metal electrode 8, which is a low electric conductor, is placed on top of this dielectric body 7. Rotor brakes 1 and 9 are also installed by hand.

In order to integrally provide the bent contact point 5 (not shown in FIG. 4) in the frame 1, conventionally, as shown in FIG. The contact receiving cavity 11 bored at the insertion end (lower end in FIG. 5) of the nest 10 forming the insert 6 surrounds the contact 5 which has been bent in advance and is bent up from the base 4, and then the hot lead The frame 1 was resin-molded by inserting the base 4 of the frame 1, and then the nest 10 was handled.

[Problems that the invention attempts to solve]

However, in the bending method of the contact point 5,
Prior to resin molding of the frame 1, it is necessary to bend the contacts 5 in advance using a bending mold. In addition, in order to insert the hot lead 2 into the frame 1, it is necessary to form a contact receiving cavity 11 in the nest 10 in order to prevent the contact 5 portion from being covered with resin. The insert r-10 has become larger, and as a result, frame 1
There was a problem in that there were restrictions on miniaturization. Also,
It is necessary to use a special jig or the like to hold the contacts 5 and the nest 10, which have been bent in advance, in the proper position during resin molding of the frame 1. This conventional method has the disadvantage of requiring a complicated mold and a very large number of steps in order to incorporate the contact 5 into the frame 1 in a proper state. Therefore, the yield of the product was poor and materials were often wasted.

The present invention has been made in view of these points, and includes 1&
Incorporating a point within a frame - rA7. a to N process
3. I wanted to be able to reliably and easily bend the contact into an appropriate shape using a mold that was easy to draw, and the point part 1 and 1. It is an object of the present invention to provide a method for bending a contact point which can be formed extremely compactly and which can maintain a high yield of materials for each constituent part.

[Means for solving problems]

The contact bending method of the present invention includes
-1. In the bending method of the contact formed by bending and bending the molded base into the space in the fly 11, the end face of the nest in the insertion direction forming the space and The end of the contact point is inserted between the hook protruding from the end surface in the pushing direction.] The base part is inset molded in the frame, and then the nest is pulled out from the frame to widen the contact point by the hook. It is characterized by bending and raising.

[For production]

According to the present invention, the contact point to be bent using a nest is integrally molded in the frame in the state of 11f1 to be bent, and then the nest is handled from the frame, so that the hook portion provided on the nest is J, the contact is bent and raised into a predetermined shape.

(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1d3 and FIG. 2 show the method of the present invention in the order of steps.

The nut h'& example is applied to the case where hot leads 22 are integrally formed within the frame 21 of a trimmer capacitor.

First, an outline of the trimmer condenser to be processed will be explained. The frame 21 is made of synthetic resin, has a nearly square plane, and has a receiving section 171 in the upper half, which has a circular cross section in front and back, in which the dielectric, the rotor brake 1, and the shade are housed.
It is tiered. Then, the hot lead 22 is molded with an intermediate base 24 into the frame 21 from the rectangular side of the receiving part 26, and a contact 25 which is 1F and Q is formed from this base 24 into the frame 21. It is bent downward from the bottom surface of the receiving part 26 of the frame 21, and the lead part 23 provided 31 outside the frame 21 from the U part 24 is bent downward.

Next, a method of bending the contacts 25 of the i-lima capacitor described above will be explained.

In this embodiment, the bending process at point 25 is performed in the manufacturing process of -)■ for the resin molding of the frame 21.
Same +1. This is done using the recessed holes 27, 28, and 29 shown in No. 3 I21(a). Of these holes 27, 28, and 29, the hole 27 is used for bending the contact 25.

As shown in FIGS. 3(a) and 3(b), this insertion hole 27 has a substantially square column shape, and the end face 27 in the insertion direction
A hook 30 is provided in a protruding manner to insert the end of the contact 25 in a straight state before being bent by 1°. The receiving hole 28 is semi-cylindrical in order to form the circular portion of the receptacle 61126. The insertion hole 29 is the resin mold of the frame 21 +
r5, hold the base 24 of the hot lead 22 between the insertion direction end surface 27a of the insertion hole 27 and fix it 1,'J'1J
It is something that

Frame 21 using these holes 27, 28, 29
In order to resin-mold the hot lead 22, first, as shown in FIG.
is inserted between the insertion direction end surface 27a of the insertion hole 27 and the hook 30, and the base 24 of the hot lead 22 is further held between the insertion hole 29 and the like. In addition, the insertion hole 28 and the insertion hole 27 are brought into close contact and adjacent to each other. Thereafter, a synthetic resin material constituting the frame 21 is injected into the openings of the outer mold (not shown) and each of the holes 27, 28, and 29, and the hot leads 2 are injected into the frame 21.
The base part '24 of 2 is insert molded. After the injected synthetic resin material has sufficiently solidified, each of the holes 27, 28, and 29 is pulled out from the frame 21.

During this pull-out operation of the insertion hole 27, a straight plate made of an i9 gold-flexure plate with a thickness of 0.2 culm whose tip was inserted between the end surface 27a of the insertion direction of the insertion hole 27 and the hook 30 was used. As the hook 30 rises, the contact 25 in the state is bent upward from the end of the base 24 inserted in the frame 21 on the receiving part 2G side as a starting point, as shown in FIG. , the hook 30 is Nt+ from the tip of the contact 25
By doing so, the contact 25 is bent into a predetermined shape.

In this way, in this embodiment, the bending process of the contact point 25 of the lead 22 is performed in a series of manufacturing steps for forming the hot lead 22 in the frame 21.
This can be done simultaneously by using the insertion hole 27 in which the hook 30 is protruded, and the manufacturing process is shortened by 8 times. In addition, there is no need to bend the contacts 25 of the hot leads 22 in advance before molding them with resin, and a special mold for bending is not required. Using this method, the contact 25 can be easily and easily shaped into an appropriate shape.
1. Can be bent into shapes. Since this insertion hole 27 can be formed smaller than the conventional nest 10, the peripheral shape of the contact 25 can be made smaller.
The frame 21 and trimmer condenser whites can also be made more compact. Also, 1′! Since the 3Δ process is simple, the incidence of defective products is extremely low, and the retention of the synthetic resin material of the frame 21 is maintained at a high level.

Note that the above embodiment is an IB + used for a trimmer capacitor.
:, i25 is applied to the bending process, but it can also be applied to the bending process of contacts of other electronic parts, etc. in a manner similar to -bIi'i1.

Furthermore, the present invention is not limited to the above embodiments; they can be modified as necessary.

(Effects of the Invention) Since the contact bending method of the present invention is structured as described above, the contact can be bent in a series of "A f'i" steps in which the contact is built into the frame, and the structure is 1!!It is possible to reliably bend the contact into an appropriate shape using a simple mold, and it is also possible to form the contact in an extremely compact shape. This has effects such as being able to maintain a high yield of raw materials.

[Brief explanation of the drawing]

Fig. 1 J3 and CA2 are vertical cross-sectional views of main parts showing the process order when bending the contacts of a trimmer condenser by the contact bending lj method of the present invention, respectively, and Fig. 3 (a)
3(b) is a perspective view showing the arrangement of the nest used in the method of the present invention [6], FIG. 3(b) is a perspective view of the nest provided with hooks, and FIG. FIG. 5 is a sectional view showing a conventional contact in a frame (J-1-shaped <1). 21...Frame, 22...Hot lead, 24・
...Base, 25...Contact, 26...Receptor, 27.
...Insertion hole, 27a...End face in insertion direction, 30...Hook. Applicant's agent Shunsuke Nakao Figure 1 Figure 2 Figure 3 (b) Figure 100 Left Figure 4-/l

Claims (1)

[Claims] In a method of bending a contact formed by bending and bending a base part insert-molded in a frame into a space part in the frame, the end face in the insertion direction of the nest forming the space part and the end face in the insertion direction thereof. The base is insert-molded in a frame with the end of the contact inserted between the protruding hook, and then the nest is pulled out from the frame, so that the hook bends the contact. Method of bending contacts.