KR200255177Y1 - A RF switch having the improved plate spring - Google Patents

Abstract

The present invention relates to an RF switch used in various communication systems, and more particularly, it is connected to a seesaw rotated to the left and right by a combination of permanent magnets and electromagnets to perform a switching action, but two leaf springs The present invention relates to an RF switch having improved leaf springs connected to both sides of the seesaw so that the leaf springs can be vertically exerted so that the switching operation can be stabilized.

In a communication system, a switch is used to connect or disconnect a signal path or to switch a signal path. The RF switch according to the related art is a plate spring connected to a lower part of a seesaw so that the force applied by the leaf spring when switching is performed. There is a problem that the deviation from the vertical axis is not only smooth switching operation but also wear parts.

The present invention has been made to solve the problems of the prior art as described above, the two plate springs connected to the seesaw and the switching action is respectively connected to both sides of the seesaw to allow the plate spring to apply a vertical force It provides RF switch with improved leaf spring.

Description

RF switch having the improved plate spring}

The present invention relates to an RF (Radio Frequency) switch used in various communication systems, more specifically, the switching action is connected to the seesaw rotated to the left and right by a combination of the permanent magnet and the electromagnet, The present invention relates to an RF switch having an improved leaf spring, in which two leaf springs are respectively connected to both sides of the seesaw, so that the leaf spring can be vertically exerted so that the switching operation can be stabilized.

In a communication system, a switch is used to connect or disconnect a signal path or to switch a signal path. The RF switch according to the related art is a plate spring connected to a lower part of a seesaw so that the force applied by the leaf spring when switching is performed. There is a problem that the deviation from the vertical axis is not only smooth switching operation but also wear parts.

FIG. 1A is an equivalent circuit diagram illustrating the operation of a typical RF switch, and FIG. 1B is a simplified cross-sectional view of a configuration of the RF switch according to the related art. In the basic operation of the RF switch in FIG. 1A, when DC power is applied to the terminal ①, the input (In) and the output 1 (Out ₁ ) are connected by the operation of the electromagnet and the seesaw. At this time, the terminal Denotes a common ground.

In FIG. 1B, a magnet plate 111 positioned at an upper portion thereof is equipped with a permanent magnet 112 at a center thereof, and a first electromagnet 113 and a second electromagnet 114 are positioned so as to face each other and to face the permanent magnet. Is mounted. In addition, the lower side of the permanent magnet is provided with a seesaw 116 which can rotate left and right, the lower end of the seesaw is elastic spring spring 117 is connected to the switching action.

The operation of the RF switch illustrated in FIG. 1B will be described below. For example, when DC power is applied to the control signal line 115 of the second electromagnet 114 so that the input port 125 and the first output port 126 are connected, the second electromagnet is magnetized so that the seesaw 116 can be connected. Since the seesaw rotates in the counterclockwise direction, the plate spring 117 presses the first push rod 118. Accordingly, the first contact 123 connected to the lower end of the first push rod moves downward to connect the input port and the first output port. At this time, the second push rod 119 is raised by the restoring force of the second spring 121, so that the second contact 124 is on the surface of the base 122, and thus between the input port and the second output port 127. The path of is to be blocked.

Figure 1c is a view showing the assembled state and the working state of the seesaw and the leaf spring according to the prior art. As shown, when the plate spring 117 of a material having elasticity is connected to the lower end of the seesaw 116 and the seesaw is rotated in a clockwise direction, the plate spring presses the second push rod 119. Rotates counterclockwise, the leaf spring presses the first push rod 118. However, in this action, the pressure point at which the leaf spring and the push rod are in contact with each other deviates by a predetermined angle rather than the center of the push rod (in FIG. 1C). The side of the push rod is worn or the first contact 123 and the second contact 124 connected to the first push rod and the second push rod are in smooth contact with each other. There is a disadvantage that the performance of the switch is reduced because it can not maintain.

The present invention has been made to solve the problems of the prior art as described above, the two plate springs connected to the seesaw and the switching action is respectively connected to both sides of the seesaw to allow the plate spring to apply a vertical force The technical problem is to provide an RF switch with improved leaf spring.

1A is an equivalent circuit diagram showing the operation of a typical RF switch.

Figure 1b is a simplified cross-sectional view of the configuration of the RF switch according to the prior art.

Figure 1c is a view showing the assembled state and action state of the seesaw and the leaf spring according to the prior art.

Figure 2 is a simplified cross-sectional view of the configuration of one embodiment of the RF switch improved leaf spring according to the present invention.

Figure 3 is a view showing the assembled state and action state of the seesaw and the leaf spring according to the present invention.

Figure 4 is a simplified cross-sectional view of the configuration of another embodiment of the RF switch with improved leaf spring according to the present invention.

5 is an external view of the RF switch improved leaf spring according to the present invention.

※ Explanation of codes for main parts of drawing

111, 211. Magnet plate 112, 212. Permanent magnet

113, 213. First electromagnet 114, 214. Second electromagnet

115, 215. Control signal lines 116, 216. Seesaw

117. Leaf springs 118, 218. First push rod

119, 219. Second push rod 120, 220. First spring

121, 221. Second spring 122, 222. Base

123, 223. First contact 124, 224. Second contact

125, 225, 53. Input ports 126, 226, 54. First output port

127, 227, 55. Second output port 228. First leaf spring

229. Second leaf spring 230. Seesaw support rod

51. Control signal input terminal 52. Housing

The RF switch to improve the leaf spring according to the present invention for this purpose a plurality of input and output ports for input and output of signals; A contact point for connecting or disconnecting the input / output ports; A push rod connected to the contact and movable up and down; A leaf spring for applying pressure to the push rod in a switching operation; A spring provided on an outer circumferential surface of the push rod to have a restoring force; Seesaw which can be rotated by magnetic force, but which said leaf spring is connected to right and left, respectively; A permanent magnet for magnetizing the seesaw by positioning the seesaw with a predetermined gap; Electromagnets positioned opposite to each other with respect to the permanent magnet, the switching function by receiving a control signal from the outside; A control signal line and a control signal input terminal for applying a control signal to the electromagnet; And a housing for accommodating the components.

Hereinafter, the characteristics and operating principles of each part of the present invention will be described in detail with reference to the accompanying drawings. Figure 2 is a simplified cross-sectional view of the configuration of an embodiment of the RF switch with improved leaf spring according to the present invention, for example, so that the input port 225 and the first output port 226 is connected, the second electromagnet When DC power is applied to the control signal line 215 of 214, the second electromagnet is magnetized to attract the seesaw 216, so that the seesaw rotates counterclockwise so that the first leaf spring 228 is the first push rod. Press (218). Therefore, the first contact 223 connected to the lower end of the first push rod is moved downward to connect the input port and the first output port. At this time, since the second push rod 219 is raised by the restoring force of the second spring 221, the second contact 224 is on the surface of the base 222, and thus between the input port and the second output port 227. The path of is blocked.

3 is a view showing the assembled state and the working state of the seesaw and the leaf spring according to the present invention. As shown, when the first plate spring 228 and the second plate spring 229 each having elastic materials are connected to both sides of the lower end of the seesaw 216 and the seesaw is rotated clockwise, the second plate spring is rotated. The second push rod 219 is pressed, and when the seesaw rotates counterclockwise, the first leaf spring presses the first push rod 218.

In this case, since the first and second leaf springs are connected to both sides of the seesaw, the pressure points at which the first leaf spring and the first push rod are in contact with each other, and the pressure points at which the second leaf spring and the second push rod are in contact with each other are illustrated. As shown (in Figure 3 It is located in the center of the push rod is a smooth switching action, the contact state of the first contact point 123 and the second contact point 124 connected to the first and second push rod is excellent in the performance of the switch This is improved.

Figure 4 is a simplified cross-sectional view of the configuration of another embodiment of the RF switch with improved leaf spring according to the present invention. The difference from FIG. 2 is that in FIG. 2, the seesaw support rod 230 supporting the seesaw is mounted on the base 222, whereas in FIG. 4, the seesaw support rod is mounted on the magnet plate 211. Is the point. This not only simplifies assembly, but also makes it possible to easily determine the distance between the first and second electromagnets and the seesaw, and the distance between the seesaw and the first and second push rods.

FIG. 5 is an external view of an RF switch having an improved leaf spring according to the present invention, wherein a control signal input terminal 51 for applying a control signal to an upper portion of a housing 52 accommodating the first components is provided. The lower part includes an input port 53 and first and second output ports 54 and 55 for inputting and outputting signals.

The RF switch having the improved leaf spring as described above has a single pole double throw (SPDT) having two outputs (Out ₁ , Out ₂ ) for one input In as shown in FIG. 2 or 4. Throw) The switch is described only, but the present invention is not limited thereto, and various substitutions or modifications can be made without departing from the technical spirit of the present invention. It will be obvious to you.

Therefore, the RF switch improves the leaf spring according to the present invention is devised to solve the problems of the prior art, two plate springs connected to the seesaw and the switching action is respectively connected to both sides of the seesaw By allowing the leaf spring to apply a force vertically, not only the wear of the parts can be prevented, but also the assembly is simplified and the contacts are smoothed, thereby improving the performance of the switch.

Claims (2)

In the RF switch used in various communication systems, A plurality of input and output ports for input and output of signals; A contact point for connecting or disconnecting the input / output ports; A push rod movable up and down in contact with the contact point; A leaf spring for applying pressure to the push rod in a switching operation; A spring provided on an outer circumferential surface of the push rod to have a restoring force; A seesaw which is rotatable by magnetic force, the leaf springs being connected to left and right sides respectively; A permanent magnet for magnetizing the seesaw, having a predetermined gap with the seesaw; Electromagnets positioned opposite to each other with respect to the permanent magnet, the switching function by receiving a control signal from the outside; A control signal line and a control signal input terminal for applying a control signal to the electromagnet; And an housing for accommodating the components. The method of claim 1, wherein the first and second leaf spring, Pressure is applied to the first and second push rods by the rotation of the seesaw, and provided on both sides of the seesaw, respectively, a pressure point at which the first leaf spring and the first push rod come into contact with each other, and the second leaf spring and the second push rod. 2) An RF switch with improved leaf spring, characterized in that the pressure point where the push rod abuts is located at the center of the push rod.