JPH0245977Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jack in which the jack contact piece is composed of two members.

Generally, in a jack that receives a plug, the so-called jack contact piece, which is housed in a jack case and maintains the connection by contacting the electrode portion of the plug inserted into the jack case, is usually elastic and A jack contact piece a having an inverted L shape as shown in Fig. 8a is punched out of a thin spring plate material with good conductivity, such as a phosphor bronze plate, and the upper end side of the jack contact piece a is shaped like a dogleg. The terminal portion c protruding downward from the contact portion b is bent in a desired direction and then housed in the jack case.

By the way, the spring plate material used to manufacture such a jack contact piece has a rolling direction, and when forming the contact piece b into a dogleg shape, the rolling direction must be taken into consideration and the material bent along this rolling direction. There is a need. Therefore, when punching a jack contact piece from such a spring plate material, the extending direction of the contact piece part b must match the rolling direction of the spring plate material, so that the jack contact piece can be punched out from a single spring plate material. The disadvantage was that the number of jack contacts was limited and the material yield was poor.

Jacks also come in various shapes,
For example, in a so-called vertical multiple jack in which a plurality of jack units are arranged in a row in the vertical direction, the jack contact piece accommodated in the jack unit located at the upper part has a contact piece part b as shown in the exploded view in FIG. 8b. The length of the terminal part c' is longer than the length of the terminal part c', and when punching out such a long jack contact piece a' from a single piece of spring plate material, the material yield will further deteriorate. It was hot.

The present invention was developed in view of the above circumstances, and its purpose is to improve the material yield when manufacturing jack contacts, and in particular, to improve the material yield when manufacturing jack contacts. The object of the present invention is to provide an economical jack whose effect becomes more pronounced as the jack becomes longer than the length of the jack.

In order to achieve the above object, the present invention is characterized by being constructed as follows.

That is, a contact piece that is electrically connected by contacting the electrode part of a plug inserted into the jack case, and a terminal part that is connected to the contact piece in a crosswise manner and extends outside the jack case. The contact piece part and the terminal part of the jack contact piece provided are configured separately, each made of a desired material, and the contact piece part and the terminal part are electrically connected. . This allows the material used for the contact piece and terminal to be selected in advance according to the function and purpose, and the contact piece, which receives the rolling direction specification, can be individually removed from the spring plate material, etc. This effect significantly improves the material yield, and is not particularly affected by the length of the terminal part, so the above effect is more pronounced for jacks where the length of the terminal part is longer than the length of the contact piece part. Become.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 5.

In the figure, 1 is a jack case of a vertical double jack in which upper and lower jack units 2 and 3 are integrally connected, and each jack unit 2 and 3 has a cylindrical plug insertion opening in its front wall 2a and 3a, respectively. 4 and 5 are provided in a protruding manner, and plug insertion passages 6 and 7 communicating with the plug insertion openings 4 and 5 are formed inside the plug insertion openings 4 and 5.

Reference numeral 8 designates a jack contact piece housed in the upper jack unit 2, which in this embodiment is in contact with a tip electrode of a plug (not shown).

By the way, as shown in FIG. 5, this jack contact piece 8 has a contact piece part 9 that directly contacts the electrode part of a plug (not shown), and a jack case that is connected to the contact piece part 9 in a crosswise manner. The terminal portion 10 that extends outside the terminal portion 1 is constructed separately, and each is constructed from a different material.

That is, the contact piece portion 9 is obtained from, for example, a phosphor bronze plate, and the terminal portion 10 is obtained from, for example, a brass plate, which is cheaper than a phosphor bronze plate, by stamping or the like.

The contact piece part 9 has a tongue piece part 9b extending from the front edge of the rectangular plate-shaped base part 9a, and the proximal end side of the tongue piece part 9b is folded back in a curved shape, and the tip part is formed into a dogleg shape. It is bent to form a contact portion 9c.

The base portion 9a is inserted into the receiving grooves 11, 11 formed along the inner wall 1b of the jack case, and the contact portion 9c of the contact piece portion 9 is exposed into the plug insertion passage 6.

Also, by punching out the center of the base 9a to raise the locking pawl 9d and engaging the locking pawl 9d with the locking hole 1d provided in the side wall 1c of the jack case 1, the contact piece 9 can be removed. is prevented.

On the other hand, the terminal portion 10 has a rectangular plate-like base portion 10a.
A long connecting terminal 10b extends from the connecting terminal 10b, and locking claws 10c, 10 are provided at both ends of the connecting terminal 10b.
d is provided protrudingly, and this terminal portion 10 is connected to the jack case 1.
The groove portions 11, 11 and the groove portion 12 formed therein,
When inserted into 12, these locking claws 10c, 1
0d engages with a locking portion (not shown) provided inside the jack case 1 to prevent the terminal portion 10 from coming off.

By the way, the base 9a of the contact piece 9 and the base 10a of the terminal 10 are in the same groove 1 as described above.
1, 11. By inserting the contact piece 9 into the jack case 1 in advance and then inserting the terminal part 10, the base 9 of the contact part 9 is inserted into the jack case 1.
a and the base portion 10a of the terminal portion 10 are connected to each other by pressure contact.

That is, the contact piece part 9 and the terminal part 10 are connected to each other by pressure contact when inserted into the jack case 1.

Further, this terminal portion 1 is attached to the base portion 10a of the terminal portion 10.
Three slits 10e, 1 along the charging direction of 0
0e and 10e are provided, and the center portion of the base portion 10a is bent into a dogleg shape in a direction perpendicular to the slit 10e, so as to make point contact with the base portion 9a of the contact piece portion 9 at a plurality of locations.

Next, the jack unit 3 located at the lower stage will be described. Reference numeral 13 is a jack contact piece (tip contact piece) that contacts the tip electrode of the plug inserted through the plug insertion opening 5.
Reference numeral 3 designates a so-called conventional type jack contact piece in which a contact piece part 13a and a terminal part 13b are integrally formed by punching out a spring plate material such as a phosphor bronze plate.

In the figure, reference numeral 14 is a ground side contact piece common to both the upper and lower jack units 2 and 3, and this ground side contact piece 14 is connected to a slit-shaped contact piece provided to communicate with both the upper and lower plug insertion openings 4 and 5. The plug is inserted into the housing groove 15, and the tips of the two limb-like contact pieces 14b protruding from both ends of the base 14a of the ground side contact piece 14 are exposed to the upper and lower plug insertion passages 6 and 7, respectively. ing.

Furthermore, break contacts 16 and 17 are provided corresponding to each jack unit 2 and 3, and contact the jack contacts (tip contacts) 8 and 13, respectively, when the plug is not inserted, and when the plug is inserted. is a so-called switching contact whose contact is broken.

With this configuration, the jack contact piece 8 can be divided into the contact piece part 9 and the terminal part 10. Therefore, the contact piece part 9 is made of a spring plate material such as a phosphor bronze plate, and the terminal part 10 is made of a spring plate material such as a phosphor bronze plate. The contact piece part 9 and the terminal part 10 can be manufactured from a brass plate, etc., which is cheaper than a phosphor bronze plate.
This makes it possible to manufacture both using appropriate materials for each functional purpose.

Therefore, a member that requires elasticity, such as the contact piece 9, can be exclusively punched out of a single spring plate by aligning the extending direction of the tongue 9b with the rolling direction of the spring plate. Therefore, the number of contact pieces 9 that can be punched out of one spring plate material increases, and the yield of material increases significantly.

In other words, in the past, the contact piece part and the terminal part were punched out of a single piece of spring plate material as an integral part, but since the bending direction of the contact piece part had to match the rolling direction of the spring plate material, the terminal part The disadvantage is that the longer the length of the terminal part 10, the fewer jack contact pieces that can be punched out of one spring plate material. According to the present invention, the number of jack contact pieces that can be punched out from one spring plate material decreases. Only the piece 9 can be individually punched out of the spring plate material, and the retention of material can be significantly improved compared to conventional jack contact pieces.

On the other hand, since the terminal part 10 does not require elasticity, it can be punched out of a relatively inexpensive metal plate such as a brass plate.Moreover, since there is no specification of the rolling direction, etc., the direction of extraction from the metal plate is limited. is optional, and only the terminal portion 10 can be punched out at high density from a single plate material, and similarly to the contact piece portion 9, the material yield is significantly improved.

In particular, in this embodiment, the contact piece part 9 and the terminal part 10 are inserted into the common housing grooves 11, 11, and the contact piece part 9 and the terminal part 10 are inserted into the jack case 1.
Since the contact part 9 and the terminal part 10 are connected by pressure contact with each other when inserted into the interior, the trouble of joining the contact part 9 and the terminal part 10 in advance before assembly is eliminated, and productivity is improved. .

Of course, it does not depart from the spirit of the present invention even if the contact portion 9 and the terminal portion 10 are joined by spot welding, brazing, etc. before assembly.

In addition, in this embodiment, the slits 10e, 10e, 10e are provided in the base 10a of the terminal portion 10, and the center portion of the base 10a is bent into a dogleg shape, so that the slits 10e, 10e, and 10e are formed at multiple locations relative to the base 9a of the contact piece 9. The reliability of the joint between the contact piece part 9 and the terminal part 10 is significantly improved.

By the way, in the embodiment described above, the contact piece part 9 and the terminal part 10 are directly joined, but as another example, for example, as shown in FIG. 6, the contact piece part 20 and the terminal part It is also possible to electrically connect the plate-shaped resistor 22 with the resistor 21.

As an example of its use, for example, audio output from a speaker can be directly connected to the terminal section 21 and listened to through earphones or the like.

In other words, in the past, if the audio output from the speaker was directly connected to earphones, etc., the output would be excessive, so external resistors 27, 28 were connected to the jack terminals 25, 26 as shown in FIG. However, by configuring as shown in the above example,
This has the advantage of not requiring an external resistor, saving space on the printed circuit board side, and simplifying wiring work, etc.

Furthermore, in the embodiments shown in FIGS. 1 to 5, only one jack contact piece 8 based on the present invention was inserted into the upper jack unit 2, but a jack contact piece based on such a structure may also be inserted into the housing grooves 30, 30 formed along the side wall part 1f of the jack case 1, so as to correspond to the connection of, for example, a stereo plug.

As described above, the present invention includes a contact piece that is electrically connected by contacting the electrode part of a plug that is inserted into the jack case, and a contact piece that is connected to the contact piece in a crosswise manner and extends outside the jack case. In the jack contact piece, the contact piece part and the terminal part are constructed separately and each is made of a desired material, and the contact piece part and the terminal part are electrically connected to each other. It is possible to select and use appropriate materials for the contact piece portion and the terminal portion in advance according to the function and purpose, respectively, thereby reducing material costs.

Moreover, since these contact pieces and terminal parts can be obtained by punching them individually from separate plate materials, the yield of both plate materials is significantly improved. It is possible to provide an economical jack in which the above-mentioned effects become even more pronounced when a so-called long-legged jack contact piece in which the length of the terminal portion is longer than the length of the jack is required.

[Brief explanation of the drawing]

Figures 1 to 5 show one embodiment of the present invention, Figures 1 and 2 are perspective views showing its appearance, Figure 3 is a rear view, and Figure 4 is a partial cross section showing the main parts. Figure, 5th
The figure is an exploded perspective view showing the procedure for inserting the jack contact piece.
Fig. 6 is a partial sectional view corresponding to Fig. 4 showing another embodiment of the present invention, Fig. 7 is a schematic diagram showing a state in which an external resistor is connected to a conventional jack, and Fig. 8 a and b are respectively conventional FIG. 1... Jack case, 8... Jack contact piece,
9... Contact piece part, 10... Terminal part.

Claims (1)

[Scope of utility model registration request] A jack comprising a contact piece that is brought into contact with an electrode part of a plug inserted into a jack case for electrical connection, and a terminal part that is connected to the contact piece in a crosswise manner and projects outside the jack case. The contact piece part and the terminal part of the contact piece are configured separately, each made of a desired material, and the contact piece part and the terminal part are electrically connected. Jack is characterized by: