JPH0112363Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a high frequency switch that is easy to implement and design.

In a high-frequency switch, not only its internal structure but also its mounting design can have a decisive influence on its characteristics. In other words, it goes without saying that the P board pattern should be as short as possible, but depending on the positional relationship between the fixed terminal of the switch and the external terminal of the high frequency switch incorporating this,
Optimum design is often difficult. In other words, an optimal design may be achieved by mounting a normally closed contact as a normally open contact and a normally open contact as a normally closed contact. However, in such cases, the mounting design may be made easier by exchanging the terminal positions of the normally open and normally closed contacts of this type of switch. Different types of high-frequency switches must be manufactured in advance, which is extremely uneconomical and the mounting design is troublesome.

This idea was devised in view of the above-mentioned problems.
It is an object of the present invention to provide a switch that can easily manufacture various kinds of high-frequency switches and that can also be easily replaced with a normally open contact and a normally closed contact after manufacturing.

In order to achieve the above object, this invention includes at least three fixed terminals arranged in the contact chamber,
In a high frequency switch equipped with one or more pairs of normally closed contacts and normally open contacts formed by this fixed terminal and a movable contact piece inserted between the ground contact formed on the wall of the contact chamber, each fixed terminal A feature is that each contact has a ground contact at a symmetrical position with respect to the fixed contact.

Hereinafter, the present invention will be explained in detail based on the case where it is applied to a high frequency electromagnetic relay.

FIG. 1 is a plan view showing a non-energized state of the switch according to the embodiment, and FIG. 2 is an exploded perspective view showing the internal structure thereof. In both figures, 1 indicates a case made of metal or resin on which a conductive thin film is formed, and this case 1 has a contact chamber 2 for accommodating the above-mentioned contact circuit section and a case 1 for accommodating an electromagnet section. A recess 31 is provided, and protrusions 2a to 2f are provided on both inner walls of the contact chamber 2 at symmetrical positions vertically and horizontally on surfaces facing fixed terminals to be described later. It consists of 3, 4, and 5 are penetrated and held by insulating blocks made of synthetic resin, and the ground contact 3
A, 4a, 4b, 5a are shown in the figure, and the fixed terminals 3, 4, 5 are press-fitted into the contact chamber 2, and are thereby implanted in the contact chamber 2. The fixed terminals 3, 4, and 5 respectively face the projections 2a to 2f, that is, the ground contacts configured as described above.

The card 6 is inserted into the guide groove 8 formed in the case 1.
A movable contact piece 10 is penetrated and fixed to the side surface of the case 1 that is closer to the upper wall surface. Both ends of the movable contact piece 10 are connected to the fixed terminal 3 and the protrusion 2a, and the fixed terminal 4 and the protrusion 2, respectively.
When the movable contact piece 10 is not energized, both ends of the movable contact piece 10 are pressed against the fixed terminals 3 and 4 to form a normally closed contact.

Similarly, the card 7 is slidably supported in a guide groove 9 formed in the case 1, and a movable contact piece 11 is penetrated and fixed to the side surface of the case 1 at a position relatively far from the upper wall surface. . Both ends of the movable contact piece 11 are connected to a fixed terminal 4 and a protrusion 2, respectively.
e. The movable contact piece 11 is inserted between the fixed terminal 5 and the protrusion 2f, and when not energized, both ends of the movable contact piece 11 are pressed against the protrusions 2e and 2f, which are ground contacts, forming a normally open contact.

In addition, the fixed contacts 3 and 4 erected on the case 1 side to constitute both contacts, the arrangement of the fixed contacts 4 and 5, the arrangement of the protrusions 2a to 2c and 2d to 2f, and the arrangement of the guide grooves 8 and 9. The arrangement is symmetrical or identical. By attaching the cards 6 and 7 in which the movable contact pieces 10 and 11 are attached to different positions in each of these parts, and the fixed terminals 3, 4 and 5 are inserted in different positions at both ends of the movable contact pieces 10 and 11, respectively. , a normally closed contact and a normally open contact can be configured as a pair.

Further, an electromagnet section consisting of an iron core 12, a coil 13, a yoke 14, a movable iron piece 15, etc. is fixed in the recess 31 of the case 1.

The panel 17 is cut and raised at its center to form a cut-and-raised piece 17a, and a connecting piece 17b is also formed. Further, both ends of the connecting piece 17b are configured to be engaged with the cards 6 and 7 to cause the cards 6 and 7 to interlock.

When the coil 13 is energized and the iron core 12 is excited, the movable iron piece 15 is attracted and rotated, the other end of the movable iron piece 15 pushes up the center part of the spring 17, and both ends of the connecting piece 17b push up the cards 6, 7. move upward.

As a result, the movable contact piece 10 forming a normally closed contact
are separated from the fixed terminals 3 and 4 and opened, and are pressed against the protrusions 2a and 2b, respectively.

Similarly, movable contact piece 11 constituting a normally open contact
are spaced apart from the protrusions 2e and 2f at both ends, and are press-fitted and closed to the fixed terminals 4 and 5, respectively.

As described above, in FIG. 1, the terminals 3 and 4 on the left side in the contact chamber 2 are configured as a normally closed contact, and the area between the terminals 4 and 5 on the right side is configured as a normally open contact. If you try to change the terminals 3 and 4 on the left to a normally open contact and the terminals 4 and 5 on the right to a normally closed contact, the card 6 loosely fitted in the guide groove 8 and the guide groove 9 At the same time as replacing the inserted cards 7,
Both ends of the movable contact piece 10 fixed to the card 6 are inserted between the fixed contact 4 and the protrusion 2b, and between the fixed contact 5 and the protrusion 2c. Similarly, both ends of the movable contact piece 11 fixed to the card 7 are inserted between the fixed contact 3 and the protrusion 2d, and between the fixed contact 4 and the protrusion 2e. As a result, the contact between terminals 3 and 4 becomes a normally open contact, and the contact between terminals 4 and 5 becomes a normally closed contact.

As described above, this invention is formed from at least three fixed terminals arranged in the contact chamber and a movable contact piece inserted between the fixed terminals and the ground contact formed on the wall of the contact chamber. In high-frequency switches equipped with one or more pairs of normally closed contacts and normally open contacts, a grounding contact is formed at a symmetrical position with respect to the fixed contact for each pair of fixed contacts, so that the fixed contacts and grounding The movable contact pieces that make up the normally closed or normally open contacts inserted into the contacts are now interchangeable, and the positions of the normally open and normally closed contacts can be arbitrarily selected, making it possible to switch between two types of opening and closing with different contact positions, unlike in the past. It is extremely economical as there is no need to prepare the switch in advance, and the normally open and normally closed contacts can be easily replaced after manufacture, making the implementation design of this type of switch extremely easy. It has the following effects.

[Brief explanation of the drawing]

Figure 1 is a plan view of the switch according to this invention, Figure 2
The figure is an exploded perspective view. 1... Case, 2... Contact chamber, 3a to 2f...
Projection (ground contact), 3, 4, 5...Fixed terminal, 1
0,11...Movable contact piece.

Claims (1)

[Scope of utility model registration request] A normally closed contact and a normally open contact are formed by at least three fixed terminals arranged in a contact chamber and a movable contact piece inserted between the fixed terminals and a ground contact formed on the wall of the contact chamber. A high-frequency switch comprising one or more pairs of high-frequency switches, characterized in that each pair of fixed contacts is provided with a grounding contact at a symmetrical position with respect to the fixed contact.