Driving component for driving a conducting component and a single-pole multi-throw radio frequency switch

Abstract

The present invention belongs to the technical field of radio frequency switches, and specifically relates to a driving component for driving a conduction component and a single-pole multi-throw radio frequency switch. The driving component includes a positioning module located above the conduction component, at least two core columns arranged in the positioning module, a coil sleeved outside the core column, a pin inserted into the core column, and a magnetic armature located above the core column, wherein the magnetic armature can move up and down relative to the core column, the top of the pin protrudes from the core column, and the bottom is connected to the conduction component. The technical solution provided by the present invention solves the problems of the original seesaw type drive component having a lot of parts, difficult positioning, and time-consuming and labor-intensive assembly by providing a pin for driving in a positioning module and the core column. In addition, the electromagnetic coil is brought to the magnetic armature arranged above it, which can directly act on the pin, thereby ensuring the stability of the system operation and overcoming the problems of easy deformation and failure of parts and easy false connection in the original seesaw type magnet combined with the push rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of radio frequency switches, and in particular relates to a driving component for driving a conducting component and a single-pole multi-throw radio frequency switch. Background Art

[0002] RF switch, also called microwave switch, is a switch that works in the RF band. Its function is to control the "on" and "off" of RF signal. Coaxial RF switch is a special electromechanical switch in which RF signal is connected or disconnected between terminals in the switch. Figure 1 The basic structure of a single-pole six-throw RF switch with load includes a connector component 100, a conductive component 200, a driving component 300 for driving the conductive component 200, and a control mechanism 400 for controlling the driving component 300. Generally, the coaxial RF switch uses the seesaw principle to push the push rod in the conductive component 200. When the electromagnetic coil is powered on and off, the push rod drives the conductive sheet of the conductive component to move, and the conductive sheet contacts a pair of terminals and connects the signal path between the two coaxial conductors. When the thrust on the push rod is removed, the restoring spring lifts the push rod, thereby disconnecting the signal path between the coaxial conductors.

[0003] For example, Chinese patent CN105990626A provides a radio frequency coaxial switch, which drives the push rod assembly through the coil assembly and the armature assembly. The specific coil assembly is composed of a coil and an iron core wound on the coil frame; the armature assembly includes a soft magnetic armature, a spring and a rotating shaft; the push rod assembly includes a push rod, a reaction spring and an inner conductor sheet. When the armature is attracted by the iron core and rotates, the right end of the spring pushes the push rod assembly downward and makes the inner conductor sheet contact the two terminals at the same time, realizing the transmission of radio frequency signals.

[0004] pass Figure 1 It can be found from the above patents that the existing driver mode has a complex structure, requires many parts, and is difficult to position, which causes great difficulties in the assembly of RF switches and it is difficult to ensure the consistency and stability of the product.

[0005] Switches are generally defined by "blade" and "throw". Blade refers to the active blade shaft in the switch; throw refers to the number of contacts that the active blade head of the switch can lead to. A single-pole multi-throw RF switch means that the connector terminals include a common terminal and multiple RF terminals. By connecting the common terminal to different RF terminals, different signal paths are connected. Summary of the invention

[0006] The present invention provides a driving component for driving a conducting component and a single-pole multi-throw radio frequency switch, which are used to solve the problems of complex structure and difficult assembly of the current driving component.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: the driving component for driving the conduction component comprises a positioning module located above the conduction component, at least two iron core columns arranged in the positioning module, a coil sleeved outside the iron core column, a pin inserted into the iron core column, and a magnetic armature located above the iron core column, the magnetic armature can move up and down relative to the iron core column, the top end of the pin protrudes from the iron core column, and the bottom end is connected to the conduction component;

[0008] As the coil is energized, the magnetic field generated by the iron core column on which the coil is mounted attracts the magnetic armature above it. The magnetic armature presses the ejector pin, whose top protrudes from the iron core column, downward to move its bottom end downward and drive the movement of the conductive component. When the coil is de-energized, the magnetic field disappears, the conductive component is reset, and the ejector pin is pushed up and reset.

[0009] Optionally, an integrally formed base is provided at the bottom of the core column, and at least two core columns share one base.

[0010] Optionally, the positioning module includes a cavity for accommodating the core column and the coil, a positioning assembly arranged on the bottom surface of the cavity for cooperating with the guide assembly, and a limiting structure for limiting the movement of the magnetic armature.

[0011] Optionally, the core columns are paired to form a core column group, and two core columns in the core column group correspondingly control switches of two RF terminals, or correspondingly control switch switching between a RF terminal and a ground terminal.

[0012] Optionally, the core column group includes a base, a first core column arranged on the base, and a second core column arranged on the base.

[0013] Optionally, the magnetic armature is fixed to the positioning module via a rotating shaft, one end of the magnetic armature is located above one core column in the core column group, and the other end is located above another core column in the core column group. As the magnetic field of the core column is generated and disappeared, the magnetic armature rotates, approaching or moving away from the core column below.

[0014] Optionally, the limiting structure is a groove for mounting a rotating shaft.

[0015] Optionally, when two core columns in the core column group correspondingly control the switch switching between a radio frequency terminal and a ground terminal, the core column group may further include a permanent magnet for achieving power-off retention.

[0016] The push rod in the conduction component is replaced by an ejector pin. That is, the ejector pin directly realizes the function of the push rod, and there is no need to provide a separate push rod, but the ejector pin can also be connected to the push rod in the conduction component.

[0017] The present invention also provides a single-pole multi-throw radio frequency switch, which includes a connector component composed of a plurality of terminals, a conduction component for realizing conduction or disconnection between the terminals, the above-mentioned drive component for driving the conduction component, and a control mechanism electrically connected to the drive component.

[0018] Optionally, the connector assembly includes a common terminal and 3-12 radio frequency terminals.

[0019] Optionally, the connector assembly further includes ground terminals corresponding one-to-one to the RF terminals.

[0020] Optionally, the conduction assembly includes a base plate of the connector assembly and a push rod assembly disposed on the base plate, and the push rod assembly is used to establish a connection between the two terminals;

[0021] The push rod assembly includes a conductive sheet, a connecting rod arranged parallel to the conductive sheet, a plurality of guide posts distributed between the connecting rod and the conductive sheet, a cover plate for loading the connecting rod, and a reset mechanism arranged between the connecting rod and the cover plate.

[0022] Optionally, the guide column includes a core column and a column cap sleeved on the core column, one end of the core column is arranged in the connecting rod, and the other end passes through the conductive sheet and is connected to the column cap, a limit head is provided at one end of the core column close to the conductive sheet, and the position of the conductive sheet is fixed at the limit head through the core column and the column cap, thereby realizing the linkage of relatively fixed positions of the connecting rod and the conductive sheet.

[0023] Optionally, the bottom plate is provided with avoidance grooves corresponding to the guide posts one by one, and the avoidance grooves are used to accommodate the portion of the guide posts located under the conductive sheet when the guide posts move downward.

[0024] The technical solution provided by the present invention solves the problems of the original seesaw type drive assembly having key parts, difficult positioning, and time-consuming and labor-intensive assembly by arranging a driving pin in a positioning module and an iron core column. In addition, the electromagnetic coil is brought to the magnetic armature arranged above it and can directly act on the pin, thereby ensuring the stability of the system operation and overcoming the problems of easy deformation and failure of parts and easy false connection in the original seesaw type magnet combined with the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded diagram of a specific structure of a radio frequency switch in the background technology;

[0026] Figure 2 is a cross-sectional view of a specific embodiment of the drive assembly of the present invention;

[0027] Figure 3 is a cross-sectional view of the conductive component described in Example 1;

[0028] Figure 4 is a schematic structural diagram of the push rod assembly described in Example 1;

[0029] Figure 5 is an exploded view of the single-pole six-throw radio frequency switch described in Example 1;

[0030] Figure 6 It is a structural schematic diagram of the driving component in the single-pole six-throw radio frequency switch of the present invention;

[0031] Figure 7 is an exploded view of the single-pole six-throw radio frequency switch with load and self-holding described in Example 1;

[0032] Figure 8 It is a cross-sectional view of the conductive component and the driving component after being assembled in Example 2. DETAILED DESCRIPTION

[0033] For ease of understanding, the driving component for driving the conductive component and the single-pole multi-throw radio frequency switch are described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The radio frequency switch includes a connector component, a conduction component of the radio frequency switch for realizing conduction or disconnection between two terminals in the connector component, a driving component for driving the conduction component, and a control mechanism electrically connected to the driving component.

[0037] The description of some common electronic manufacturing and other system aspects may not be detailed. Moreover, this specification often uses examples of power and electronics to describe the present invention. It should be understood that many other manufacturing methods can be used to make the present RF switch. The method described in this specification can be applied to single-pole multi-throw and multi-pole multi-throw RF switches.

[0038] Example 1

[0039] like Figure 2 As shown, the driving assembly includes a positioning module 31, a core column group 32, a coil 33, a pin 34, and a magnetic armature 35. Lead wires or terminals are drawn from the coil 33 to connect to an external control mechanism, and the control mechanism controls the power on and off of each coil and the processing of other signals.

[0040] The core column group 32 in this embodiment includes a first core column 321 and a second core column 322. The two core columns are used to control the switches of two RF terminals, or to control the switching between an RF terminal and a ground terminal. A coil 33 is sleeved on each core column, and a pin 34 is inserted in the center. The top of the pin 34 protrudes from the core column, and the bottom end is connected to the conductive component. The movement of the pin 34 drives the movement of the conductive sheet in the conductive component.

[0041] In this embodiment, the bottom of the core column group 32 is provided with an integrally formed base 36, and the base 36 cooperates with the positioning module 31 to help quickly position and fix the core column. It should be noted that a drive assembly may include multiple bases 36, or all the core columns 32 in the drive assembly may be arranged on one base 36, and the core columns on each base 36 may be any number, and the base and the core columns may be combined at will according to the requirements of arrangement and assembly and disassembly.

[0042] Continue to see Figure 2 In this embodiment, the magnetic armature 35 is fixed to the positioning module 31 through the rotating shaft 37. One end of the magnetic armature 35 is located above the first core column 321, and the other end is located above the second core column 322. As the magnetic field of the core column is generated and disappeared, the magnetic armature 35 rotates, approaching or moving away from the core column below.

[0043] It should be pointed out that the magnetic armature does not necessarily have a seesaw design. As long as it can move up and down relative to the core column, when the core column generates magnetic attraction on the magnetic armature, the ejector pin is pressed downward to drive the conductive sheet to move. When the magnetic attraction disappears, the ejector pin is reset under the action of the reset mechanism, and the magnetic armature is reset. Taking the one-to-one correspondence design between the core column and the magnetic armature as an example, it is only necessary to provide a guide channel for the magnetic armature in the positioning module. When the conduction mechanism is in the disconnected state, the magnetic armature is lifted up by the ejector pin and leaves the core column. When the conduction mechanism needs to be turned on, the magnetic armature presses down the ejector pin under the magnetic attraction, and the ejector pin drives the conductive sheet of the conduction mechanism to move downward, thereby connecting the two terminals.

[0044] Through the design of the positioning module and the ejector pin provided in the core column, the position and shape of the corresponding components can be quickly located and installed; the ejector pin (push rod) is pressurized by the pressure generated by magnetic force rather than indirectly by rotating the armature. This method of applying pressure is more stable and accurate, and will not cause jitter caused by rotation, resulting in unstable contact between the subsequent conductive components and the terminals. In addition, compared with the assembly method of the magnetic armature with the push plate in the prior art, the technical solution provided by the present invention has greatly reduced parts and components and is simpler to assemble.

[0045] This embodiment provides a new conduction component that can be used in conjunction with the above-mentioned drive component, such as Figure 3 As shown, the conduction assembly includes a base plate 21 and a push rod assembly 22 disposed on the base plate 21 .

[0046] Continue to see Figure 3 The bottom plate 21 carries the terminal 10 of the connector assembly, and the bottom plate 21 is provided with an active cavity 211 for the push rod assembly 22 .

[0047] Continue to see Figure 3 The push rod assembly 22 includes a conductive sheet 221, a connecting rod 222 arranged parallel to the conductive sheet 221, two guide columns 223 distributed between the connecting rod 222 and the conductive sheet 221, a cover plate 224 for loading the connecting rod 222, and a reset mechanism (not shown in the figure) arranged between the connecting rod 222 and the cover plate 224. The ejector pin 34 in the driving mechanism is fixedly connected to the connecting rod 222, and the ejector pin 34 pushes the connecting rod 222 to move.

[0048] like Figure 3 As shown in the right half, the ejector pin 34 moves downward, pushing the connecting rod 222 downward, and the conductive sheet 221 parallel to the connecting rod 222 also moves downward, and the conductive sheet 221 contacts the corresponding two terminals 10 to achieve conduction; Figure 3 As shown in the left half, when the push force of the ejector pin 34 is withdrawn, the connecting rod 222 rebounds under the action of the reset mechanism, and the two ends of the conductive sheet 221 are disconnected from the two terminals 10.

[0049] like Figure 4As shown, the guide column 223 includes a core column 2231 and a column cap 2232 sleeved on the core column 2231, one end of the core column 2231 is set in the connecting rod 222, and the other end passes through the conductive sheet 221 to be connected with the column cap 2232, and a limit head 2233 is provided at one end of the core column 2231 close to the conductive sheet 221, and the position of the conductive sheet 221 is fixed at the limit head 2233 through the core column 2231 and the column cap 2232.

[0050] Continue to see Figure 3 The bottom plate 21 is provided with avoidance grooves 212 corresponding to the guide posts 223 one by one. The avoidance grooves 212 are used to accommodate the portion located under the conductive sheet 223 when the guide posts 223 move downward.

[0051] The reset mechanism is used to enable the connecting rod 222 to drive the conductive sheet 223 to return to the initial position when the force of the magnetic armature 35 pressing the ejector pin 34 is removed, that is, to disconnect the contact with the terminal 10. The reset mechanism can be an elastic member, a spring or a reed.

[0052] The driving component can be used for single-pole multi-throw and multi-pole multi-throw radio frequency switches, preferably for single-pole multi-throw radio frequency switches, such as single-pole 3-12 throws. The specific application method is described below using a single-pole six-throw radio frequency switch as an example.

[0053] like Figure 5 As shown, the connector assembly includes a common terminal 11 arranged in the center and six RF terminals 12 evenly distributed around a circle. In order to realize the connection and disconnection of the common terminal 11 with a RF terminal 12 respectively, six conductive assemblies 20 are correspondingly arranged, and a driving assembly 30 including three core column groups 32 is provided above the six conductive assemblies 20.

[0054] like Figure 6 As shown, three core column groups 32 are arranged in a triangle, each core column group 32 corresponds to a magnetic armature 35, and the first core column 321 and the second core column 322 of the same group respectively control only one of the two adjacent RF terminals 12 to connect to the common terminal 11 to transmit the RF signal.

[0055] Continue to see Figure 6 The positioning module 31 includes a cavity 311 for accommodating the core column group 32 and the coil 33, a positioning component 312 arranged on the bottom surface of the cavity 311 for cooperating with the guide component, and a groove 313 for mounting the rotating shaft 37. In this embodiment, the positioning component 312 is a positioning pin, and a pin hole is provided at a corresponding position in the guide component.

[0056] like Figure 7As shown, when a load is required, a grounding terminal (not shown) corresponding to the RF terminal 12 can be further added to the connector assembly, and a push rod assembly 22' is set between the RF terminal 12 and the corresponding grounding terminal to achieve conduction and disconnection between the two. The first core column 321 in the core column group 32 is used for the switch between an RF terminal 12 and a common terminal 11, and the second core column 322 is used for the switch between the same RF terminal 12 and the grounding terminal. When there is a load and it is necessary to achieve power-off retention, a permanent magnet 323 can be further set between the first core column 321 and the second core column 322.

[0057] Example 2

[0058] The difference from Example 1 is that the conducting component adopts Figure 1 The conventional conductive element 200, such as Figure 8 As shown, it includes: a push rod 201 , a carrier plate 202 carrying the push rod 201 , a connecting piece 203 arranged at the bottom of the push plate 201 , and a return spring 204 arranged between the push rod and the carrier plate 202 .

[0059] The two push rods 201 form a group, corresponding to an upper core column group 32 and a magnetic armature 35. When the right core column is energized, the magnetic armature 35 is attracted to rotate clockwise and squeeze the ejector pin 34 in the right core column, thereby pushing the right conductive component below it, and the right connecting piece 203 moves downward, so that the corresponding two terminals (not shown in the figure) are connected. The left conductive component does not move downward under the action of the return spring 204 because there is no pressure from the ejector pin 34 above, and the corresponding two terminals are disconnected.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A driving component for driving a conductive component, characterized in that: It includes a positioning module located above the conducting component, at least two core columns arranged in the positioning module, a coil sleeved outside the core column, a pin inserted into the core column, and a magnetic armature located above the core column, the magnetic armature can move up and down relative to the core column, the top end of the pin protrudes from the core column, and the bottom end is connected to the conducting component; An integrally formed base is provided at the bottom of the core column, and at least two core columns share one base, which cooperates with the positioning module to help quickly position and fix the core column; The magnetic armature is fixed on the positioning module via a rotating shaft; The positioning module comprises a cavity for accommodating the core column and the coil, a positioning assembly arranged on the bottom surface of the cavity for cooperating with the guide assembly, and a groove for mounting the rotating shaft; As the coil is energized, the magnetic field generated by the iron core column on which the coil is mounted attracts the magnetic armature above it. The magnetic armature presses the ejector pin, whose top protrudes from the iron core column, downward to move its bottom end downward and drive the movement of the conductive component. When the coil is de-energized, the magnetic field disappears, the conductive component is reset, and the ejector pin is pushed up and reset.

2. The driving component for driving the conductive component according to claim 1, characterized in that: The core columns are paired to form a core column group, and two core columns in the core column group correspondingly control the switches of two radio frequency terminals, or correspondingly control the switch switching between a radio frequency terminal and a ground terminal.

3. The driving component for driving the conductive component according to claim 2, characterized in that: The core column group includes a base, a first core column arranged on the base, and a second core column arranged on the base; the magnetic armature is fixed to the positioning module through a rotating shaft, one end of the magnetic armature is located above the first core column, and the other end is located above the second core column. As the magnetic field of the core column is generated and disappeared, the magnetic armature rotates, approaching or moving away from the core column below.

4. The driving component for driving the conductive component according to claim 2, characterized in that: When two core columns in the core column group correspondingly control the switch switching between a radio frequency terminal and a ground terminal, the core column group further includes a permanent magnet for realizing power-off retention.

5. A single-pole multi-throw radio frequency switch, characterized in that: The invention comprises a connector component composed of a plurality of terminals, a conducting component for realizing conduction or disconnection between the terminals, a driving component for driving the conducting component as claimed in any one of claims 1 to 4, and a control mechanism electrically connected to the driving component.

6. The single-pole multi-throw radio frequency switch according to claim 5, characterized in that: The connector assembly includes a common terminal and 3-12 radio frequency terminals.

7. The single-pole multi-throw radio frequency switch according to claim 6, characterized in that: The connector assembly also includes ground terminals corresponding one to one with the RF terminals.

8. The single-pole multi-throw radio frequency switch according to claim 5, characterized in that: The conduction assembly includes a base plate of the connector assembly and a push rod assembly disposed on the base plate, and the push rod assembly is used to establish a connection between the two terminals; The push rod assembly includes a conductive sheet, a connecting rod linked to the conductive sheet, a plurality of guide posts distributed between the connecting rod and the conductive sheet, a cover plate for loading the connecting rod, and a reset mechanism arranged between the connecting rod and the cover plate.

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