KR20130137427A - Dynamic stability of contact point improved rf switch - Google Patents

Dynamic stability of contact point improved rf switch Download PDF

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Publication number
KR20130137427A
KR20130137427A KR1020120061033A KR20120061033A KR20130137427A KR 20130137427 A KR20130137427 A KR 20130137427A KR 1020120061033 A KR1020120061033 A KR 1020120061033A KR 20120061033 A KR20120061033 A KR 20120061033A KR 20130137427 A KR20130137427 A KR 20130137427A
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KR
South Korea
Prior art keywords
bent
elastic
contact
plug
switch
Prior art date
Application number
KR1020120061033A
Other languages
Korean (ko)
Inventor
마기형
Original Assignee
마기형
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 마기형 filed Critical 마기형
Priority to KR1020120061033A priority Critical patent/KR20130137427A/en
Publication of KR20130137427A publication Critical patent/KR20130137427A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The present invention provides an RF switch capable of improving the dynamic stability of a contact point of an operating pin turning on or off the contact point. According to an execution example of the invention, it includes a plug insertion hole for inserting a test plug into the top center, an insulation switch body including a pin receiving chamber connected to the plug insertion hole, and an operating pin and a fixing pin which performs electrical on/off switch operation according to an operating direction of the test plug by being placed in the chamber. The operating pin includes a circuit connection terminal part connected to a circuit board, an upward support terminal extended from an end of the connection terminal part by being bent upwardly, a first elastic bent part extended from the top support terminal by being bent, a downward support terminal extended from the first elastic bent part by being downwardly bent, a second elastic bent part extended from the bottom of the downward support terminal by being bent, and a plug touching part extended from the second elastic bent part. The fixing pin includes a circuit connection terminal part connected to a circuit board, an upward support terminal extended from an end of the connection terminal part by being bent upwardly, a first elastic bent part extended from the top support terminal by being bent, a reaction support terminal extended from the first elastic bent part by being tilted to the upward support terminal, and a pressing contact part pressing and touching a top surface of the plug touching part by being bent in the reaction support terminal.

Description

RF switch with improved contact resiliency {Dynamic stability of contact point improved RF switch}

The present invention relates to an RF switch used for testing a high frequency characteristic circuit, and more particularly, to an RF switch capable of improving the contact resilience of a movable pin for performing contact on / off.

In general, the measurement of characteristics of a mobile communication terminal measures the degree of reception of radio waves and the operation characteristics of the terminal, and measures the performance under the same conditions as those actually used by using a separate test apparatus.

Hereinafter, a configuration for measuring characteristics of the aforementioned mobile communication terminal will be described with reference to FIG. 7.

As shown in FIG. 7, a mobile communication terminal generally includes a main circuit board 120 and an antenna 150. Reference numeral 122 denotes an antenna support provided in the case 140 of the mobile communication terminal. The main circuit board 120 includes an antenna connection pad 124 bonded to the antenna support 122, an antenna matching circuit unit 126 for impedance control of an RF signal, and a case 140 of the mobile communication terminal. The RF switch 128 and the duplexer 130 to which the connection terminal 114 of the characteristic measurement connector 100 inserted into the formed connector coupling hole 142 is connected are configured.

The characteristic measuring connector 100 is formed at one end of the coaxial RF cable 112 and the coaxial RF cable 112 and is connected to an RF switch 128 of the main circuit board 120. And a jack 116 formed at the other end of the coaxial RF cable 112 and into which a connection plug of an external characteristic measurement test device (not shown) is inserted.

The RF output of the duplexer 130 is basically output to the antenna 150 via the antenna matching circuit unit 126 through the RF switch 128, the connector for measuring the characteristics for measuring the characteristics of the mobile communication terminal ( When the connection terminal 114 of 100 is inserted into the connector coupling hole 142 and connected to the RF switch 128, the RF switch 128 connects the RF output of the duplexer 130 to the connector for measuring the characteristics. The switching operation is performed to output an external characteristic measurement test apparatus through the reference numeral 100.

That is, the RF switch 128 blocks the RF output of the duplexer 130 from being output to the antenna matching circuit unit 126 when measuring the characteristics of the mobile communication terminal, and cuts the RF output of the connector for measuring the characteristics of the mobile communication terminal ( It is mounted on the main circuit board 120 to output the switching to 100).

The RF switch 128 should be able to reliably and reliably perform the switching operation for measuring the characteristics of the mobile communication terminal, in order to check whether or not before the product shipment, the connection of the movable pin and the fixed pin, disconnection and The test procedure must be passed through repetitive execution of the reconnection process. In such a process, the movable terminal must withstand the repetitive stress due to the pressurization by the test plug of the connection terminal 114 provided in the connector 100 for the characteristic measurement, for reconnecting with the fixing pin and maintaining the connection state The elastic force must be maintained.

This process must be performed in a myriad of repeats to pass the test of the RF switch 128 prior to product shipment. Therefore, in the above-described process, excessive load is applied to the stop portion of the movable pin and the movable pin is damaged or its shape is deformed.

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide an RF switch capable of improving the contact restoring force of a movable pin for performing contact on / off.

According to a preferred embodiment of the present invention,

An insulated switch body having a plug inlet hole in which a test plug is inserted in a center of the upper surface thereof and a pin housing chamber in communication with the plug inlet hole;

A movable pin and a fixing pin disposed in the pin housing and electrically on / off-switched according to an operation direction of the test plug;

The movable pin has a circuit connection end portion connected to the circuit board, an upward support end bent upwardly at one end of the circuit connection end, a first elastic bend extending and bent in an arc at the upward support end, and a downward direction at the first elastic curve part. A lower support end bent to extend, a second elastic bend extended and bent in an arc at a lower end of the lower support end, and a plug contact portion extending in a tangential direction from the second elastic bend;

The fixing pin may include a circuit connecting end connected to a circuit board, an upward supporting end bent upwardly at a circuit connecting end, a first elastic bent extending and bent in an arc at an upward supporting end, and an upward supporting end at a first elastic bent part. Reaction force support end which is inclined downward toward the side, is characterized in that the pressing contact portion is bent in an arc on the reaction force support end to press contact the upper surface of the plug contact portion.

According to another suitable embodiment of the present invention, at least one elastic restoring piece for restoring the original position of the plug contact portion is further formed in the second elastic curved portion.

According to another suitable embodiment of the present invention, at least one elastic restoration piece protruding toward the upward support end is further formed on the downward support end.

According to another suitable embodiment of the present invention, the elastic restoration piece is characterized in that it is configured in a straight form or in an arc shape.

According to another suitable embodiment of the present invention, the push contact portion is characterized in that the projecting contact piece is further formed in contact with the upper surface of the plug contact portion.

According to the present invention, the RF switch for improving the contact restoring force of the movable pin for performing contact on / off is provided with two elastic curved portions on the movable pin in the diagonal direction, and the fixed pin also has an arc-shaped push contact portion and a reaction force. As the supporting end exerts a force for maintaining contact force with the plug contact of the movable pin, the contact restoring force is improved.

In particular, when the elastic restoration piece is formed on the second elastic curved portion or the downward support end of the movable pin, the restoration of the contact can be improved by assisting the restoring force of the elastic curved portion, and the deformation of the elastic curved portion can be prevented.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is an exploded perspective view of an RF switch according to the present invention.
Figure 2 is an assembled cross-sectional view of an embodiment of an RF switch according to the present invention showing the contact closed state.
3 is a view showing a state in which the contact is opened by the test plug in FIG.
Figure 4 is an assembled cross-sectional view of another embodiment of the RF switch according to the present invention showing the contact closed state.
5 is a view showing a state in which the contact is opened by the test plug in FIG.
6 is an assembled cross-sectional view showing an embodiment modified in FIG.
7 is a schematic configuration diagram for measuring characteristics of a conventional mobile communication terminal.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

As shown in FIGS. 1 and 2, the RF switch 10a has a plug inlet hole 11 into which a test plug 5 is inserted in the center of the upper surface and a pin housing chamber 12 in communication with the plug inlet hole 11. An isolation switch body 10 is provided.

In the pin storage chamber 12, the movable pin 20 and the fixing pin 30 which switch electrically on / off switch operation according to the up-down operation direction of the test plug 5 are arrange | positioned. The movable pin 20 and the fixing pin 30 are made of a metal or alloy having conductivity. For example, it may be nickel, beryllium and the like.

The movable pin 20 has a circuit connection end portion 21 connected to the circuit board 1, an upward support end 22 and an upward support end 22 which are bent upwardly and extended from one end of the circuit connection end portion 21. The first elastic curved portion 23, which is bent in an arc shape, is extended downwardly by being bent in an arc shape at the lower end of the lower support end 24, which is bent downwardly and extended from the first elastic curved portion 23, and the lower support end 24. The second elastic curved portion 25 and the second elastic curved portion 25 have plug contact portions 26 extending in a tangential direction.

In this case, the upward support end 22 and the downward support end 24 may be configured to be parallel to each other, or the downward support end 24 may be formed to be slightly inclined within the range of 2 degrees to 5 degrees toward the upward support end 22. This is to increase the elastic restoring force of the first elastic curved portion 23 to improve the contact closing performance between the movable pin 20 and the fixing pin 30. In addition, since the first elastic curved portion 23 is positioned above the second elastic curved portion 25 and receives a relatively large elastic stress, the first elastic curved portion 23 may be relatively wider.

Therefore, when the test plug 5 moves downward and pushes the plug contact part 26 as shown in FIG. 3, the plug contact part 26 moves downward to electrically open the contact. At this time, the first elastic curved portion 23 and the second elastic curved portion 25 simultaneously rebound and accumulate elastic energy. In this state, when the test plug 5 moves up again as shown in FIG. 2, the test plug 5 exhibits a restoring force by the elastic force of the elastic energy accumulated in the first elastic curved portion 23 and the second elastic curved portion 25 to prevent the plug contact portion ( The contact closes electrically as 26) rises and returns to its original position.

In this case, when the first elastic curved portion 23 and the second elastic curved portion 25 are plastically deformed due to the repeated lifting operation of the test plug 5, the elastic restoring force may decrease. The decrease in elastic restoring force means that the electrical connection between the plug contact portion 26 and the fixing pin 30 is opened.

Therefore, in the present invention, it is preferable that the elastic restoring piece 27 is provided on the movable pin 20. The elastic restoration piece 27 may be formed in the second elastic curved portion 25 as shown in FIGS. 2 and 3. At this time, the elastic restoring piece 27 may be configured in a downward concave arc shape or inclined straight form.

In addition, the elastic restoration piece 27 may be formed in the downward support end 24 as shown in Figs. In this case, the elastic restoring piece 27 may be formed in a straight form or an arc shape toward the upward support end 22.

In the case of the movable pin 20 having the elastic restoration piece 27 as described above, even if the operation distance of the test plug 5 occurs excessively, the elastic restoration piece 27 immediately becomes the first elastic curved portion 23 or the second elastic curved portion. Excessive elastic deformation of (25) is suppressed to induce restoration of the plug contact 26 in situ.

On the other hand, the fixing pin 30 is a circuit connecting end portion 31 connected to the circuit board 1, the upper support end 32 is bent upward from the circuit connection end 31, as shown in Figs. The first elastic curved portion 33 bent and extended in an arc from the upward supporting end 32, and the reaction force supporting end 34 inclined downward toward the upward supporting end 32 in the first elastic curved portion 33. , The pressing contact portion 35 is bent in an arc shape on the reaction force supporting end 34 to press the upper surface of the plug contact portion 26.

At this time, the width from the first elastic curved portion 33 to the pressing contact portion 35 is configured to be relatively smaller than the width of the upward support plate (32). This is to increase the elastic restoring force of the first elastic curved portion 33 so that a gap does not occur when the contact between the movable pin 20 and the fixed pin 30 is closed.

Here, the first elastic curved portion 33 suppresses upward lift of the plug contact portion 26. At this time, the reaction force supporting end 34 is preferably positioned in a substantially vertical direction with the plug contact portion 26. In addition, when the push contact part 35 is bent in an arc shape, it absorbs the upward impact of the plug contact part 26 during the one-time retraction operation of the test plug 5 to have reliable contact stability.

Meanwhile, as shown in FIG. 6, a protruding contact piece 36 contacting the upper surface of the plug contact part 26 may be further formed at the end of the push contact part 35. Since the protruding contact piece 36 exerts a pressing force with the first elastic curved portion 33 as a starting point, the return operation of the contact can be stabilized.

Reference numeral '7' is a 'switch body cover'.

The RF switch 10a configured as described above has the first elastic curved portion 23 and the second elastic curved portion 25 of the movable pin 20 in a state where the test plug 5 stays in the elevated position as shown in FIGS. 2 and 4. By the elastic restoring force of the plug contact portion 26 is subjected to the lifting force. Therefore, the plug contact portion 26 is in contact with the push contact portion 35 of the fixing pin 30.

In this state, when the test plug 5 moves downward as shown in FIGS. 3 and 5, the plug contact part 26 is pushed and flipped downward to be released from the push contact part 35 of the fixing pin 30, and at the same time, the contact is opened. Electrical switching is achieved. At this time, the first elastic curved portion 23 and the second elastic curved portion 25 are in a state in which elastic energy is accumulated. In addition, the elastic restoration piece 27 is in a state in which the first elastic curved portion 23 and the second elastic curved portion 25 can be quickly restored in contact with the adjacent surface.

Thereafter, when the test plug 5 is moved upward to its original position as shown in FIGS. 2 and 4, the elastic energy accumulated in the first elastic curved portion 23 and the second elastic curved portion 25 acts momentarily, thereby causing the plug contact portion 26 to be moved. ) Contacts the push contact part 35 of the fixing pin 30 again to close the contact and switch the circuit back to its original position. At this time, the elastic restoring piece 27 increases the restoring force of the first elastic curved portion 23 and the second elastic curved portion 25 to help the rapid return. In addition, the elastic restoration piece 27 can improve the operating life of the movable pin 20 by reducing the load of the elastic stress of the first elastic curved portion 23 and the second elastic curved portion 25.

Therefore, even if the number of times of the test plug 5 is large, the contact of the plug contact portion 26 of the movable pin 20 in the push contact portion 35 of the fixing pin 30 does not close the gap. Therefore, the switching function of the RF switch 10a is improved and the test performance of the operating characteristics is improved by the operation stability of the contact restoring force by the movable pin 20 which performs on / off of the contact.

Although the present invention has been described in detail with reference to the presented embodiments, those skilled in the art may make various modifications and modifications without departing from the spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by these variations and modifications, but is only limited by the scope of the appended claims.

10: insulated switch body
10a: RF switch
11: plug hole
12: pin storage room
20: movable pin
21: circuit connection end
22: upward support
23: first elastic bending part
24: downward support
25: second elastic bend
26: plug contacts
27: elastic restoration
30: push pin
31: circuit connection end
32: upward support
33: first elastic bending part
34: Reaction Force Support
35: push contact
36: protruding contact piece

Claims (6)

An insulated switch body (10) having a plug inlet hole (11) into which a test plug (5) is inserted in the center of the upper surface, and a pin housing chamber (12) in communication with the plug inlet hole (11);
A movable pin (20) and a fixing pin (30) disposed in the pin housing chamber (12) to electrically switch on / off in accordance with an operation direction of the test plug (100);
The movable pin 20 has a circuit connecting end portion 21 connected to the circuit board 1, an upward supporting end 22 and an upward supporting end 22 which are bent upward from one end of the circuit connecting end portion 21. Is bent in an arc at the lower end of the lower support end 24, the downward support end 24 is bent downward extending from the first elastic curved portion 23, the first elastic bent portion 23 is extended in The second elastic curved portion 25 and the plug contact portion 26 extending tangentially from the second elastic curved portion 25;
The fixing pin 30 is arc-shaped at the circuit connecting end 31 connected to the circuit board 1, the upward supporting end 32 and the upward supporting end 32 being bent upward from the circuit connecting end 31. The first elastic curved portion 33, bent to extend to the reaction force supporting end 34, the reaction force supporting end 34 is inclined downward toward the upward support end 32 side from the first elastic curved portion 33 RF switch is improved in contact resilience, characterized in that the pressing contact portion (35) is bent in an arc shape and presses the upper surface of the plug contact portion (26). The method of claim 1,
RF switch for improved contact resilience, characterized in that the second elastic curved portion 25 is further formed with one or more elastic restoring pieces (27) for the original position restoration of the plug contact portion (26). The method of claim 1,
RF switch with improved contact resiliency, characterized in that one or more elastic restoring pieces (27) protruding toward the upper support end (22) in the downward support end (24). 4. The method according to claim 2 or 3,
The elastic restoring piece (27) is an RF switch with improved contact resilience, characterized in that configured in a straight form. 4. The method according to claim 2 or 3,
The elastic restoring piece (27) is an RF switch with improved contact resilience, characterized in that formed in the shape of an arc. The method of claim 1,
The push contact part 35 is an RF switch with improved contact resilience, characterized in that the contact contact portion 36 is further formed in contact with the upper surface of the plug contact portion 26.
KR1020120061033A 2012-06-07 2012-06-07 Dynamic stability of contact point improved rf switch KR20130137427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120061033A KR20130137427A (en) 2012-06-07 2012-06-07 Dynamic stability of contact point improved rf switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120061033A KR20130137427A (en) 2012-06-07 2012-06-07 Dynamic stability of contact point improved rf switch

Publications (1)

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KR20130137427A true KR20130137427A (en) 2013-12-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110211819A (en) * 2019-04-24 2019-09-06 宁波耀华电气科技有限责任公司 A kind of auxiliary switch for exempting to crimp end wiring
CN111512493A (en) * 2018-03-07 2020-08-07 普和希控股公司 Communication device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111512493A (en) * 2018-03-07 2020-08-07 普和希控股公司 Communication device
US11296731B2 (en) 2018-03-07 2022-04-05 Phc Holdings Corporation Communication device
CN110211819A (en) * 2019-04-24 2019-09-06 宁波耀华电气科技有限责任公司 A kind of auxiliary switch for exempting to crimp end wiring

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