Coaxial radio frequency switch

Abstract

The utility model discloses a coaxial radio frequency switch, which comprises a shell, a plurality of female joints are arranged outside the shell, and one end of each female joint extends into the shell to form a main contact point and a distribution contact point; the switch is characterized in that a conductive elastic sheet is arranged in the shell, the conductive elastic sheet is connected with the main contact point, the conductive elastic sheet is provided with elastic claws extending to the position above the distributed contact points, and an electromagnetic driving assembly is arranged above each elastic claw. A push rod on the electromagnetic driving assembly directly faces the elastic claw and can push the elastic claw to move downwards to make contact with the distributed contacts. Through cooperative use of the conductive elastic sheet and the electromagnetic driving assembly, the number of movable mechanism parts is reduced, and the operation stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coaxial switches and relates to a coaxial radio frequency switch. Background Art

[0002] Coaxial RF switches are often required in circuit board testing scenarios. Figure 1 As described above, in the normal state, the main contact point S1 in the middle of the existing coaxial RF switch can be disconnected from the surrounding six distributed contacts S2, and the main contact point can be connected to any point of the distributed contacts when necessary. The existing technology consists of six sets of micro-motion mechanisms composed of levers and reset springs to control the connection between the distributed contacts and the main contact points respectively, and the rebound structure consists of multiple springs and aluminum blocks, with a large number of parts and a complex structure.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0004] The utility model aims to provide a coaxial radio frequency switch, which reduces the number of movable mechanism parts and improves operation stability by improving the contact mode of contacts.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A coaxial radio frequency switch comprises a shell, a plurality of female connectors are arranged outside the shell, and one end of the female connector extends into the shell to form a main contact point and a distributed contact; the characteristic is that a conductive spring is arranged in the shell, the conductive spring is connected to the main contact point, the conductive spring has a spring claw extending above the distributed contact, an electromagnetic drive component is arranged above each of the spring claws, and a push rod on the electromagnetic drive component is opposite to the spring claw and can push the spring claw to move downward to contact the distributed contact.

[0007] Furthermore, the distributed contacts are equidistantly distributed around the main contact point in the circumferential direction.

[0008] Furthermore, the electromagnetic drive assembly includes an electromagnet having a channel in the middle thereof, a return spring being arranged in the channel, one end of the return spring being connected to the push rod, the other end of the return spring being connected to the electromagnetic cover plate, and the electromagnetic cover plate being fixedly connected to the electromagnet.

[0009] Furthermore, the female connector is arranged on a panel, and the panel is arranged at one end of the shell; a VGA interface is arranged at the other end of the shell, and the VGA interface is electrically connected to a control board in the shell, and the control board is connected to a power supply unit that turns on and off the electromagnet.

[0010] Furthermore, an upper cover plate and a lower cover plate are disposed in the shell, the upper cover plate and the lower cover plate are connected via a first guide column, the electromagnet is disposed on the upper cover plate, and a first through hole for the push rod to pass through is disposed on the lower cover plate.

[0011] Furthermore, a plurality of load resistors are embedded in the panel.

[0012] Furthermore, the conductive spring sheet is arranged on an insulating plate, and the insulating plate has a clamping block for fixing the conductive spring sheet; the insulating plate has a second through hole for avoiding the main contact point and the distributed contact point.

[0013] Furthermore, the insulating plate is pressed and fixed on the back side of the panel through a connecting plate.

[0014] Furthermore, the connecting plate is fixedly connected to the lower cover plate via a second guide column, the connecting plate is locked on the panel via bolts, and the connecting plate has an opening for placing a conductive spring sheet.

[0015] Specifically, the conductive spring comprises a central spring substrate, one end of the spring claw is connected to the spring substrate, and the other end of the spring claw is tilted upward and its height is higher than the spring substrate. The conductive spring is made of high elastic spring steel sheet, and through an integrated design, it saves space and has a low mechanism failure rate.

[0016] The above technical solution has the following beneficial effects: by using the conductive spring piece in conjunction with the electromagnetic drive assembly, the number of movable mechanism parts is reduced and the operating stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 It is a schematic diagram of the distribution state structure of the main contact points and the distributed contacts in the background technology.

[0020] Figure 2 The present invention is a three-dimensional structural schematic diagram.

[0021] Figure 3 The utility model is provided with a rear view structure schematic diagram.

[0022] Figure 4 for Figure 3 Cross-sectional view along AA direction.

[0023] Figure 5 This is a schematic diagram of a partial three-dimensional structure provided by the utility model.

[0024] Figure 6 The utility model provides a schematic diagram of the explosion structure.

[0025] Figure 7 The figure is a three-dimensional schematic diagram of the conductive spring provided by the utility model.

[0026] In the figure: 1-housing; 2-female connector; 3-conductive spring; 31-spring substrate; 32-spring claw; 4-electromagnet; 5-push rod; 6-electromagnetic cover; 7-panel; 8-VGA connector; 9-insulating plate; 10-load resistor; 11-connecting plate; 12-upper cover; 13-lower cover; 14-first guide column; 15-second guide column; 16-control board; 17-third guide column; S1-main contact point; S2-distributed contact. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0028] See also Figure 2-Figure 7 As shown, a coaxial radio frequency switch includes a housing 1, and seven female connectors 2 are arranged outside the housing 1. The female connectors 2 are SMA connectors, one of which is in the middle, and the other six female connectors are circumferentially surrounded by the central female connector. One end of the female connector 2 extends into the housing 1, wherein one end of the central female connector forms a main contact point, and one end of the surrounding six female connectors forms distributed contacts.

[0029] A conductive spring 3 is arranged in the housing 1. The conductive spring 3 includes a central spring substrate 31. Six circumferentially distributed spring claws 32 are distributed on the edge of the spring substrate 31. The number of the spring claws 32 is consistent with the number of distributed contacts. One end of the spring claw 32 is connected to the spring substrate 31, and the other end of the spring claw 32 is tilted upward and its height is higher than the spring substrate 31. The spring substrate 31 and the spring claw 32 are integrally formed, and the whole is made of high-elasticity spring steel sheet.

[0030] The spring plate substrate 31 is connected to the main contact point, the spring claw 32 extends to the top of the distribution contact, and an electromagnetic driving component is arranged above each spring claw. When the electromagnetic driving component is powered on, the push rod on it is opposite to the spring claw and can push the spring claw down to contact the distribution contact; when the electromagnetic driving component loses power, the push rod returns to its original position, and the spring claw bounces upward and disengages from the distribution contact.

[0031] Specifically, the electromagnetic drive assembly includes an electromagnet 4, the middle of which has a channel, a reset spring is arranged in the channel, one end of the reset spring is connected to the push rod 5, the other end of the reset spring is connected to the electromagnetic cover plate 6, and the electromagnetic cover plate 6 is fixedly connected to the electromagnet 4. When the electromagnet 4 is not powered on, the push rod 5 is in a contracted state under the traction of the reset spring, at which time the push rod 5 does not press down the spring claw, and the spring claw does not contact the corresponding distributed contact; when the electromagnet 4 is powered on, it pushes the push rod 5 forward and pushes the spring claw below it downward, so that the spring claw contacts the corresponding distributed contact.

[0032] In this embodiment, a panel 7 is provided at one end of the housing 1, and the panel 7 is connected to the housing 1 by threaded connection or screw locking. A 15P VGA connector 8 is provided at the other end of the housing 1, and the VGA connector 8 is fixed to the housing 1 by a connection copper column 9.

[0033] Furthermore, the panel 7 is provided with a plurality of threaded holes corresponding to the main contact points and the distributed contacts, and the corresponding female connectors 2 are threadedly connected in the threaded holes to fix the female connectors 2 on the panel 2. The panel 2 is provided with mounting holes at the four corners to facilitate its connection with other components.

[0034] The inner side of the panel 7 is provided with a first groove and a second groove, wherein there are four second grooves distributed around the first groove. The first groove is used to place the insulating plate 9, and the load resistor 10 is placed in the second groove. Among them: the insulating plate 9 has a block for fixing the conductive spring 3, and the insulating plate 9 is provided with a second through hole to avoid the main contact point and the distribution contact. When in use, one end of the female connector 2 passes through the second through hole to form a main contact point and a distribution contact exposed outside the insulating plate 9 (at this time, the distribution contacts are equidistantly distributed around the main contact point in the circumferential direction), wherein the main contact point is directly fixedly connected to the conductive spring 3, and the claw 32 can be connected to the corresponding distribution contact when pressed down. The above-mentioned insulating plate 9 is pressed and fixed to the back of the panel 7 by the connecting plate 11 (the connecting plate 11 is locked on the panel 7 by bolts), and the above-mentioned connecting plate 11 has an opening for placing the conductive spring 3.

[0035] In this embodiment, the electromagnetic drive assembly is fixed to the connecting plate 11 through a connection assembly. Specifically, the connection assembly includes an upper cover plate 12 and a lower cover plate 13 arranged in the housing 1, and the upper cover plate 12 and the lower cover plate 13 are fixedly connected together through a first guide column 14. The electromagnet 4 is arranged on the upper cover plate 12, and the lower cover plate 13 is provided with a first through hole for the push rod 5 to pass through. The lower cover plate 13 is fixedly connected to the connecting plate 11 through a second guide column 15.

[0036] A control board 16 is also provided in the housing 1, and the control board 16 is fixedly connected to the upper cover 12 through a third guide column 17. The control board 16 is electrically connected to the VGA interface so that control instructions can be transmitted to the control board 16. At the same time, the control board 16 is connected to the power supply unit to control the on and off of the corresponding electromagnet.

[0037] The utility model adopts an integrally formed conductive spring 3, which has a reset performance based on the spring claw 32. When the control board 16 receives an instruction to turn on a certain switch, the corresponding electromagnet 4 is energized, and the electromagnetic push rod 5 presses down the corresponding spring claw 32, and the above-mentioned spring claw 32 contacts the distributed contact below it to complete the opening action of the coaxial RF switch. When it is necessary to close, the power supply of the electromagnet 4 is interrupted, and the push rod 5 moves up under the action of the reset spring, and the spring claw 32 resets and disengages from the distributed contact to achieve the closing action. Compared with the original rebound structure, the utility model reduces the number of movable mechanism parts and improves the stability of the operation of the coaxial RF switch.

[0038] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A coaxial radio frequency switch, comprising a housing, wherein a plurality of female connectors are disposed outside the housing, and one end of the female connector extends into the housing to form a main contact point and a distributed contact point; characterized in that: A conductive spring is arranged in the shell, and the conductive spring is connected to the main contact point. The conductive spring has a spring claw extending above the distribution contact. An electromagnetic drive component is arranged above each of the spring claws. The push rod on the electromagnetic drive component faces the spring claw and can push the spring claw to move down and contact the distribution contact.

2. The coaxial radio frequency switch according to claim 1, characterized in that: The distributed contacts are equidistantly distributed around the main contact point in the circumferential direction.

3. The coaxial radio frequency switch according to claim 1 or 2, characterized in that: The electromagnetic drive assembly includes an electromagnet having a channel in the middle thereof, a return spring being arranged in the channel, one end of the return spring being connected to the push rod, the other end of the return spring being connected to the electromagnetic cover plate, and the electromagnetic cover plate being fixedly connected to the electromagnet.

4. The coaxial radio frequency switch according to claim 1 or 2, characterized in that: The female connector is arranged on a panel, and the panel is arranged at one end of the shell; a VGA interface is arranged at the other end of the shell, and the VGA interface is electrically connected to a control board in the shell, and the control board is connected to a power supply unit for turning the electromagnet on and off.

5. The coaxial radio frequency switch according to claim 4, characterized in that: An upper cover plate and a lower cover plate are arranged in the shell, the upper cover plate and the lower cover plate are connected via a first guide column, the electromagnet is arranged on the upper cover plate, and a first through hole for the push rod to pass through is arranged on the lower cover plate.

6. The coaxial radio frequency switch according to claim 4, characterized in that: A plurality of load resistors are embedded in the panel.

7. The coaxial radio frequency switch according to claim 4, characterized in that: The conductive spring sheet is arranged on an insulating plate, and the insulating plate has a clamping block for fixing the conductive spring sheet; the insulating plate has a second through hole for avoiding the main contact point and the distributed contact point.

8. The coaxial radio frequency switch according to claim 7, characterized in that: The insulating plate is pressed and fixed on the back side of the panel through a connecting plate.

9. The coaxial radio frequency switch according to claim 8, characterized in that: The connecting plate is fixedly connected to the lower cover plate via a second guide column, the connecting plate is locked on the panel via bolts, and the connecting plate has an opening for placing a conductive spring sheet.

10. The coaxial radio frequency switch according to claim 1, characterized in that: The conductive spring sheet comprises a central spring sheet substrate, one end of the spring claw is connected to the spring sheet substrate, and the other end of the spring claw is tilted upward and its height is higher than the spring sheet substrate.

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