JPH0328012B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high frequency relay that switches on and off electrical signals in a high frequency range.

[Conventional technology]

Conventionally, this type of high-frequency relay has a normally open contact that is switched by a COM contact, which is a common contact.
Only so-called IT (transfer) type relays were used, consisting of an NO contact and a normally closed NC contact, and were used to switch a single high-frequency signal.

[Problem to be solved by the invention]

The high-frequency relay described in the conventional example is convenient when used, for example, to switch high-frequency signals received by an antenna to a TV or VTR, but it is difficult to simultaneously connect two independent high-frequency signal circuits on one printed board. Since switching between opening and closing is not possible, it is necessary to provide a high-frequency relay for each high-frequency signal circuit, which poses a problem in that the mounting area on the printed board becomes large.

The present invention aims to improve the above-mentioned problems, and its purpose is to replace the conventional IT type high frequency relay with minimal component changes without increasing the mounting area on the printed board. To easily select and manufacture two types of high-frequency relays, 1a and 1b types, which can open and close two independent high-frequency circuits.

[Means to solve the problem]

In order to achieve the above object, the high frequency relay of the present invention has two sets of contact sections arranged side by side in a shield case, each contact terminal is arranged approximately on the same straight line, and two sets of contact terminals provided in the middle of the contact terminals are arranged in parallel. You can choose whether to separate the contact terminal bases that serve as COM terminals, or to mount them all together outside the shield case.

[Effect]

If the two terminal bases in the middle of the parallel contact terminals that serve as COM terminals are provided independently, a 1a, 1b type or 2a type high frequency relay can be obtained.
If the contact terminal base is attached as one piece, it can be used as a conventional IT.
It is possible to obtain several types of high frequency relays with different contact specifications without increasing the mounting area on the printed board and with a minimum number of parts replacements.

〔Example〕

An embodiment of the present invention will be described in detail below.
Figures 1 to 3 a and b respectively show one embodiment of the present invention, and show types 1a, 1b and 1b.
This shows a relay with an IT type configuration. By energizing the electromagnet part 12, the card 1 is pressed against the armature 9, and the contact springs 4a and 4b to which the card 1 is attached are connected to a pair of COM contacts, respectively. The NC contact and NO contact are brought into contact alternately.

To explain each part in detail, U-shaped card 1
Both side pieces 2a and 2b are formed differently, and the whole is provided so as to be slidable back and forth. The center piece 3 of the card 1 is attached to the tips of the side pieces 2a and 2b.
Contact springs 4a and 4b are respectively attached in parallel with the . The contact springs 4a, 4b are plated with a noble metal such as gold at least at the portions that serve as movable contacts, and approximately central portions thereof are attached to the side pieces 2a, 2b of the card 1. Each contact spring 4
Contact terminals 5a, 5b, 5 opened and closed by a, 4b
c and 5d are plated with precious metals such as gold at least on the parts that become fixed contacts, and from the right in the figure, the NC contacts, one COM contact, and the other COM contact.
Contacts and NO contacts are arranged approximately on the same straight line and at equal intervals. The contact terminals 5a, 5
b, 5c, and 5d are arranged parallel to both contact springs 4a, 4b, and the intermediate portion is arranged in a body 13 made of a molded material such as synthetic resin. Each contact terminal 5
a, 5b, 5c, 5d, contact springs 4a, 4b, and card 1 are housed in a shield case 6 formed by bending a metal plate with an open top surface, and the protruding piece 7 of the card 1 is inserted into the shield case 6. It protrudes from a notch 8 provided on the rear side. Said card 1
The protruding piece 7 is disposed opposite to one end of the foil armature 9. Further, a plurality of ground connection terminals 10 are provided on the front side surface and both right and left side surfaces of the shield case 6, which are cut outward and extend from the bottom surface 14 of the seal case 6. The ground connection terminal 10 is provided on a straight line connecting the contact terminals 5a, 5b, 5c, and 5d, and between the contact terminals 5a and 5b or between the contact terminals 5c and 5d, and serves as an electromagnetic section for high-frequency signals. Direct transmission of high-frequency signals (electromagnetic waves) generated between the contact terminals 5a and 5b when 12 is not energized or between the contact terminals 5c and 5d when the electromagnet part 12 is energized at the portion extending outward from the body 13. It is possible to prevent electrostatic coupling caused by radiation. Further, on both sides of the shield case 6, ground terminals 1 are cut and raised inward and installed vertically inside the shield case 6.
1a, 11b, 11c, and 11d, each pair of ground terminals 11a, 11b is arranged opposite to the NC contact terminal 5a and the COM contact terminal 5b, respectively, in front of the contact spring 4a. A contact spring 4a is arranged between the ground terminals 11a and 11b. On the other hand, another pair of ground terminals 11c and 11d are a COM contact terminal 5c and a NO contact terminal 5d at the rear of the contact spring 4b.
A contact spring 4b is disposed between each contact terminal 5c, 5d and each ground terminal 11c, 11d.

When the electromagnet section 12 is not energized, both ends of the contact spring 4b in the open contact state are connected to the ground terminal 1.
1c, 11d and other parts including the middle of the contact spring 4b are kept at a certain distance from the inner surface of the shield case 6 so as not to come into direct contact. Further, when the electromagnet 12 is excited, both ends of the contact spring 4a are connected to the ground terminals 11a, 1.
1b, and at this time, other parts of the contact spring 4a are kept from coming into contact with the inner surface of the shield case 6.

The shield case 6 is fitted into a recess 15 provided in the body 13.

The contact terminals 5a, 5b, 5c, and 5d are connected to the notches 16 and holes 1 created by cutting and raising the shield case 6.
7 and is electrically insulated from the shield case 6.

Reference numeral 18 designates an earth connection terminal insertion hole bored in the body 13.

19 is a return spring, one end of which is connected to the protruding piece 7 of the card 1.
The other end is fixed to the yoke 21 of the electromagnet section 12.

A shield plate 22 is made of metal and has a substantially box shape, and is fitted into the shield case 6.

Then, the electromagnet part 12 is attached to the body 13, and the shield case 6 is attached to the recess 15 of the body 13.
are fitted into the shield case 6, and the contact springs 4a,
4b and the card 1, the electromagnet part 12 and the card 1 are engaged and connected by the return spring 19. Then, the shield plate 22 is placed over the opening surface of the shield case 6, and arranged so that the contact spring 4a connects one of the COM contact terminals 5b and the NC contact terminal 5a when the electromagnet part 12 is in a non-excited state. . When the electromagnet section 12 is now energized, one end of the armature 9 is attracted to the electromagnet section 12, the protruding piece 7 is pressed forward by the armature 9, the card 1 slides forward, and the contact spring 4a is attached to the other COM. Connect the contact terminal 5b and the NO contact terminal 5c. This is a so-called 1a, 1b type high frequency relay, which can increase the simultaneity when opening and closing two different high frequency circuits.

Furthermore, as shown in FIG. 3a, if the terminal 23, which is made up of the pair of COM contact terminals 5b and 5c, is electrically and mechanically attached to the base 24 outside the shield case 6, the outside of the COM terminal The extension part can be integrated into a conventional IT type high frequency relay. Figure b shows another embodiment of the COM terminal, in which a pair of square-shaped COM terminals 2
5 and 25 are integrated.

As shown in FIGS. 4 and 5, both sides 2a and 2b of the U-shaped card 1 are formed to have the same length, and both contact springs 4a and 4b are arranged in a straight line, and the ground terminals 11a, 11b, 11c, 11d are formed by cutting and raising the rear side of the shield case 6 inward, and each contact terminal 5a, 5b, 5c,
5d, and ground terminals 11a, 11
b, 11c, 11d and contact terminals 5a, 5b, 5
Both contact springs 4a and 4b are positioned between c and 5d, and a so-called 2a type high frequency relay can be constructed.

〔Effect of the invention〕

As described above, the present invention arranges two sets of contact parts in parallel in a shield case, arranges each contact terminal on substantially the same straight line, and arranges two sets of contact parts in the middle among the contact terminals.
By separating the terminal bases that become COM terminals, 1a and 1b type high frequency relays can be obtained, and by attaching the terminal bases together, an fT type high frequency relay can be obtained, that is, the shape of the COM terminal Several types of high-frequency relays can be obtained by simply selecting the above, and when constructed as types 1a and 1b, high-frequency relays with high simultaneous opening and closing can be obtained.

[Brief explanation of drawings]

1 to 3 a and b each show an embodiment of the present invention, and FIG.
FIG. 2 is an exploded perspective view of the 1T type. FIGS. 3A and 3B are exploded perspective views showing the COM terminal of the 1T type. 4 and 5 show other embodiments of the present invention, respectively, with FIG. 4 being an exploded perspective view and FIG. 5 being a front view. 1...Card, 4a, 4b...Contact spring, 5a, 5
b, 5c, 5d... Contact terminal, 6... Shield case, 10... Earth connection terminal, 11a, 11b, 1
1c, 11d...Earth terminal, 12...Electromagnet part, A
...Contact part.

Claims (1)

[Claims] 1. A substantially box with an open top that houses a contact section consisting of a pair of contact terminals that are opened and closed by a movable contact spring and a plurality of ground connection terminals protruding from the back surface, and houses the contact section inside the contact section. This is a high-frequency relay consisting of a shield case made of a shaped metal plate, and an electromagnet that drives the contact portions via a card, in which two sets of the contact portions are arranged in parallel on substantially the same straight line, and one of the contact terminals is A high frequency relay characterized in that bases of two contact terminals arranged in parallel in the middle are provided independently, or both bases are integrally attached outside a shield case.