CN118213721A - Driving assembly for driving conducting assembly and single-pole multi-throw radio frequency switch - Google Patents

Abstract

The invention belongs to the technical field of radio frequency switches, and particularly relates to a driving assembly for driving a conducting assembly and a single-pole multi-throw radio frequency switch. The driving assembly comprises a positioning module positioned above the conduction assembly, at least two iron core columns arranged in the positioning module, a coil sleeved outside the iron core columns, a thimble inserted into the iron core columns, and a magnetic armature positioned above the iron core columns, wherein the magnetic armature can move up and down relative to the iron core columns, the top ends of the thimbles protrude out of the iron core columns, and the bottom ends of the thimbles are connected with the conduction assembly. According to the technical scheme provided by the invention, the ejector pins for driving are arranged in the positioning module and the iron core column, so that the problems of important parts, difficult positioning and time and labor waste in assembly of the original rocker type driving assembly are solved.

Description

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

Technical Field

The invention belongs to the technical field of radio frequency switches, and particularly relates to a driving assembly for driving a conducting assembly and a single-pole multi-throw radio frequency switch.

Background

The radio frequency switch, also called microwave switch, is a switch working in radio frequency band, and its function is to control on and off of radio frequency signal. A coaxial radio frequency switch is a special electromechanical switch in which a radio frequency signal is connected or disconnected between terminals in the switch. Fig. 1 is a basic structure of a loaded single pole, six throw radio frequency switch, which includes a connector assembly 100, a pass-through assembly 200, a drive assembly 300 that drives the pass-through assembly 200, and a control mechanism 400 for controlling the drive assembly 300. In general, the coaxial rf switch pushes the push rod in the driving conducting assembly 200 by using the rocker principle, and when the electromagnetic coil is powered on or off, the push rod drives the conductive sheet of the conducting assembly to move, and the conductive sheet contacts a pair of terminals and is connected to a signal path between two coaxial conductors. When the pushing force on the push rod is removed, the restoring spring lifts the push rod, thereby breaking the signal path between the coaxial conductors.

For example, chinese patent CN105990626a provides a radio frequency coaxial switch, which drives a push rod assembly by a coil assembly cooperating with an armature assembly. The specific coil assembly consists of a coil and an iron core which are wound on a coil framework; the armature assembly comprises a soft magnetic armature, a spring plate and a rotating shaft; the push rod assembly comprises a push rod, a counter-force spring and an inner conductor sheet. When the armature is attracted by the iron core to rotate, the right end of the elastic piece pushes the push rod assembly to move downwards, and the inner conductor piece is enabled to contact the two terminals at the same time, so that radio frequency signal transmission is realized.

As can be seen from fig. 1 and the above patent, the existing driver mode has a complex structure, needs a plurality of parts, is difficult to position, causes great difficulty in assembling the radio frequency switch, and also has difficulty in ensuring the consistency and stability of the product.

Switches generally define an architecture with "poles" and "throws". A movable cutter shaft in the cutter finger switch; the number of contacts to which the movable blade of the finger switch can access. A single pole, multiple throw radio frequency switch refers to a connector terminal that includes a common terminal and a plurality of radio frequency terminals that are turned on by connecting the common terminal to different radio frequency terminals to thereby conduct different signal paths.

Disclosure of Invention

The invention provides a driving assembly for driving a conducting assembly and a single-pole multi-throw radio frequency switch, which are used for solving the problems of complex structure and difficult assembly of the existing driving assembly.

In order to solve the technical problems, the technical scheme of the invention is as follows: the driving assembly for driving the conduction assembly comprises a positioning module, at least two iron core columns, a coil, a thimble and a magnetic armature, wherein the positioning module is positioned above the conduction assembly, the iron core columns are arranged in the positioning module, the coil is sleeved outside the iron core columns, the thimble is inserted into the iron core columns, the magnetic armature is positioned above the iron core columns and can move up and down relative to the iron core columns, the top ends of the thimble protrude from the iron core columns, and the bottom ends of the thimble are connected with the conduction assembly;

With the energizing of the coil, the magnetic field generated by the iron core column sleeved by the coil attracts the magnetic armature above the coil to approach, and the magnetic armature extrudes the thimble with the top protruding from the iron core column downwards to enable the bottom end of the thimble to move downwards and drive the conducting component to move; when the coil is powered off, the magnetic field disappears, the conduction assembly resets, and the thimble is jacked up to reset.

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

Optionally, the positioning module comprises a cavity for accommodating the iron core column and the coil, a positioning assembly arranged on the bottom surface of the cavity and used for being matched with the guiding assembly, and a limiting structure used for limiting the movement mode of the magnetic armature.

Optionally, the iron core columns are matched in pairs to form an iron core column group, and two iron core columns in the iron core column group correspondingly control the switch of two radio frequency terminals or correspondingly control the switch switching between a radio frequency terminal and a grounding terminal.

Optionally, the core limb group includes a base, a first core limb disposed on the base, and a second core limb disposed on the base.

Optionally, the magnetic armature is fixed on the positioning module through the pivot, magnetic armature one end is located one iron core post top in the iron core post group, and the other end is located another iron core post top in the iron core post group, along with the production and the disappearance of iron core post magnetic field, the magnetic armature takes place to rotate, is close to or keeps away from the iron core post of below.

Optionally, the limiting structure is a groove for erecting the rotating shaft.

Optionally, when two core limbs in the core limb group correspondingly control switching between a radio frequency terminal and a ground terminal, the core limb group may further include a permanent magnet for achieving power-off retention.

The push rod in the conduction assembly is replaced by the thimble. That is, the ejector pin directly realizes the function of the push rod without additionally arranging the push rod, but the ejector pin can also be connected with the push rod in the conduction assembly.

The invention also provides a single-pole multi-throw radio frequency switch which comprises a connector assembly formed by a plurality of terminals, a conduction assembly for realizing the conduction or disconnection between the terminals, the driving assembly for driving the conduction assembly, and a control mechanism electrically connected with the driving assembly.

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

Optionally, the connector assembly further includes a ground terminal in one-to-one correspondence with the radio frequency terminals.

Optionally, the conducting component comprises a bottom plate of the connector component and a push rod component arranged on the bottom plate, and the push rod component establishes connection between two terminals;

The push rod assembly comprises a conductive sheet, a connecting rod, a plurality of guide posts, a cover plate and a reset mechanism, wherein the connecting rod is arranged in parallel with the conductive sheet, the guide posts are distributed between the connecting rod and the conductive sheet, the cover plate is used for loading the connecting rod, and the reset mechanism is arranged between the connecting rod and the cover plate.

Optionally, the guide post comprises a core post and a post cap sleeved on the core post, one end of the core post is arranged in the connecting rod, the other end passes through the conducting strip to be connected with the post cap, the position of the conducting strip is fixed at the position-limiting head through the core column and the column cap, so that the linkage of the connecting rod and the relative fixed position of the conducting strip is realized.

Optionally, the bottom plate is provided with a position avoidance groove corresponding to the guide posts one by one, and the position avoidance groove is used for accommodating a part positioned below the conductive sheet when the guide posts descend.

According to the technical scheme provided by the invention, the ejector pins for driving are arranged in the positioning module and the iron core column, so that the problems of important parts, difficult positioning and time and labor waste in assembly of the original rocker type driving assembly are solved.

Drawings

FIG. 1 is an exploded view of a specific construction of a prior art RF switch;

FIG. 2 is a cross-sectional view of one embodiment of the drive assembly of the present invention;

FIG. 3 is a cross-sectional view of the pass-through assembly of example 1;

FIG. 4 is a schematic view of the structure of the push rod assembly of embodiment 1;

fig. 5 is an exploded view of the single pole six throw rf switch described in example 1;

Fig. 6 is a schematic diagram of the drive assembly of the single pole, six throw rf switch of the present invention;

fig. 7 is an exploded view of the loaded and self-sustaining single pole six throw rf switch described in example 1;

fig. 8 is a sectional view of the conduction assembly and the driving assembly in embodiment 2 after assembly.

Detailed Description

For ease of understanding, the drive assembly and single pole, multi-throw radio frequency switch of the drive conduction assembly are described below in connection with embodiments, it being understood that these embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions and positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The radio frequency switch comprises a connector assembly, a conduction assembly for realizing conduction or disconnection between two terminals in the connector assembly, a driving assembly for driving the conduction assembly, and a control mechanism electrically connected with the driving assembly.

Some common electronics manufacturing and other system aspects are not necessarily described in detail. Moreover, the present invention is described in terms of electrical and electronic aspects, it being understood that many other fabrication methods may be used to fabricate the present RF switch. The method described in the specification can be applied to single-pole multi-throw and multi-pole multi-throw radio frequency switches.

Example 1

As shown in fig. 2, the driving assembly includes a positioning module 31, a core leg group 32 disposed in the positioning module 31, a coil 33, a thimble 34, and a magnetic armature 35. Leads or terminals lead from the coils 33 to connect with an external control mechanism, which controls the on/off of each coil and the processing of other signals.

In this embodiment, the core leg set 32 includes a first core leg 321 and a second core leg 322, where the two core legs are used to control the switch of two radio frequency terminals, or correspondingly control the switch between a radio frequency terminal and a ground terminal, each core leg is sleeved with a coil 33, and a thimble 34 is inserted in the center of each core leg; the top end of the thimble 34 protrudes out of the iron core column, the bottom end of the thimble is connected with the conducting assembly, and the movement of the conducting plate in the conducting assembly is driven along with the movement of the thimble 34.

In this embodiment, the bottom of the core column set 32 is provided with an integrally formed base 36, and the base 36 is matched with the positioning module 31 to help to quickly position and fix the core column. It should be noted that, a driving assembly may include a plurality of bases 36, or all the core columns 32 in the driving assembly may be disposed on one base 36, and the core columns on each base 36 may be any number, and the bases and the core columns may be optionally combined according to the arrangement and the assembly and disassembly requirements.

With continued reference to fig. 2, in this embodiment, the magnetic armature 35 is fixed on the positioning module 31 by the rotating shaft 37, one end of the magnetic armature 35 is located above the first core leg 321, the other end is located above the second core leg 322, and the magnetic armature 35 rotates with the generation and disappearance of the magnetic field of the core leg, and approaches or is far away from the core leg below.

It should be noted that the magnetic armature does not have to be of a rocker design, and only needs to move up and down relative to the iron core column, when the iron core column generates magnetic attraction force to the magnetic armature, the ejector pin is pressed downwards, so that the conductive sheet is driven to move, and when the magnetic attraction force disappears, the ejector pin is reset and the magnetic armature is reset under the action of the reset mechanism. Taking the one-to-one design of the iron core column and the magnetic armature as an example, only the guide channel of the magnetic armature is arranged in the positioning module, when the conducting mechanism is in a disconnection state, the magnetic armature is jacked up by the ejector pin to leave the iron core column, when the conducting mechanism needs to be conducted, the magnetic armature pushes down the ejector pin under the attraction of magnetic force, and the ejector pin drives the conducting strip of the conducting mechanism to move downwards to connect two terminals.

The position and the shape of the corresponding assembly can be rapidly positioned and installed through the design that the positioning module and the ejector pins are arranged in the iron core column; the thimble (push rod) is pressed by the pressure generated by magnetic force instead of the indirect armature rotation mode, the pressing mode is stable and accurate, the unstable contact between a follow-up conduction assembly and a terminal is avoided due to shaking caused by rotation, and compared with the assembly mode of the magnetic armature matched with a push plate in the prior art, the technical scheme provided by the invention has the advantages that parts are greatly reduced, and the assembly is simpler.

In this embodiment, a new conduction assembly is provided and can be used with the driving assembly, as shown in fig. 3, where the conduction assembly includes a base plate 21 and a push rod assembly 22 disposed on the base plate 21.

With continued reference to fig. 3, the base plate 21 carries the terminals 10 of the connector assembly, and the base plate 21 is provided with a movable cavity 211 of the push rod assembly 22.

With continued reference to fig. 3, the push rod assembly 22 includes a conductive sheet 221, a connecting rod 222 parallel to the conductive sheet 221, two guide posts 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) disposed between the connecting rod 222 and the cover plate 224, in which a thimble 34 is fixedly connected with the connecting rod 222, and the thimble 34 pushes the connecting rod 222 to move.

As shown in the right half of fig. 3, the ejector pin 34 descends to push the connecting rod 222 downwards, the conducting strip 221 parallel to the connecting rod 222 also descends, and the conducting strip 221 contacts with the two corresponding terminals 10 to realize conduction; when the pushing force of the ejector pin 34 is removed, 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, as shown in the left half of fig. 3.

As shown in fig. 4, the guide post 223 includes a stem 2231 and a post cap 2232 sleeved on the stem 2231, one end of the stem 2231 is disposed in the connecting rod 222, the other end passes through the conductive sheet 221 and is connected with the post cap 2232, a limit head 2233 is disposed at one end of the stem 2231 near the conductive sheet 221, and the position of the conductive sheet 221 is fixed at the limit head 2233 by the stem 2231 and the post cap 2232.

With continued reference to fig. 3, the bottom plate 21 is provided with a plurality of avoidance grooves 212 corresponding to the guide posts 223 one by one, and the avoidance grooves 212 are used for accommodating the portions below the conductive plates 223 when the guide posts 223 descend.

The return mechanism is used to enable the connecting rod 222 to drive the conductive sheet 223 to return to the initial position, that is, to break contact with the terminal 10 after the force of the magnetic armature 35 pushing the ejector pin 34 is removed, and the return mechanism may be an elastic member, a spring or a reed.

The drive assembly may be used in single pole, multi-throw, multi-pole, multi-throw radio frequency switches, preferably in single pole, multi-throw radio frequency switches, such as single pole 3-12 throw radio frequency switches, and the specific application thereof will be described below with reference to single pole, six throw radio frequency switches.

As shown in fig. 5, the connector assembly includes a common terminal 11 disposed in the center and six rf terminals 12 uniformly distributed around a circle, in order to switch on and off the common terminal 11 and the rf terminal 12 respectively, six conductive assemblies 20 are correspondingly disposed, and a driving assembly 30 including 3 core column groups 32 is disposed above the six conductive assemblies 20.

As shown in fig. 6, 3 core leg groups 32 are arranged in a triangle shape, each core leg group 32 corresponds to one magnetic armature 35, and the first core leg 321 and the second core leg 322 of the same group respectively control only one of the two adjacent radio frequency terminals 12 to be connected with the common terminal 11 for transmitting radio frequency signals.

With continued reference to fig. 6, the positioning module 31 includes a cavity 311 for accommodating the core leg assembly 32 and the coil 33, a positioning assembly 312 disposed on a bottom surface of the cavity 311 for cooperating with the guiding assembly, and a recess 313 for mounting the rotating shaft 37. In this embodiment, the positioning component 312 is a positioning pin, and a pin hole is disposed in the guiding component corresponding to the positioning pin.

As shown in fig. 7, when a load is required, grounding terminals (not shown) corresponding to the rf terminals 12 one by one may be further added to the connector assembly, and a push rod assembly 22' is disposed between the rf terminals 12 and the corresponding grounding terminals to switch on and off. The first core leg 321 of the core leg set 32 is used for switching a radio frequency terminal 12 and a common terminal 11, and the second core leg 322 is used for switching the same radio frequency terminal 12 and a ground terminal. When the load is applied and the power-off maintenance is required, a permanent magnet 323 may be further provided between the first core leg 321 and the second core leg 322.

Example 2

The difference from embodiment 1 is that the conduction assembly is a conventional conduction assembly 200 as shown in fig. 1, and as shown in fig. 8, it includes: the push rod 201, a carrier plate 202 carrying the push rod 201, a connecting sheet 203 arranged at the bottom of the push rod 201, and a return spring 204 arranged between the push rod and the carrier plate 202.

Two push rods 201 are a group, corresponding to one iron core column group 32 and one magnetic armature 35 above, and as the iron core column on the right side is electrified, the magnetic armature 35 is attracted to rotate clockwise and press the thimble 34 in the iron core column on the right side, so as to push the conduction assembly on the right side below the conduction assembly, and the connection sheet 203 on the right side moves downwards, so that the corresponding two terminals (not shown in the figure) are connected. The left conductive component is not pressed by the upper thimble 34, and does not move downwards under the action of the return spring 204, and the corresponding two terminals are disconnected.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with other technical features, which do not depart from the scope of the technical scheme of the embodiments of the present invention.

Claims (10)

1. The driving assembly for driving the conduction assembly is characterized by comprising a positioning module, at least two iron core columns, a coil, a thimble and a magnetic armature, wherein the positioning module is positioned above the conduction assembly;

With the energizing of the coil, the magnetic field generated by the iron core column sleeved by the coil attracts the magnetic armature above the coil to approach, and the magnetic armature extrudes the thimble with the top protruding from the iron core column downwards to enable the bottom end of the thimble to move downwards and drive the conducting component to move; when the coil is powered off, the magnetic field disappears, the conduction assembly resets, and the thimble is jacked up to reset.

2. The drive assembly of claim 1, wherein the core legs have bases integrally formed at bottoms thereof, at least two core legs sharing a base.

3. The drive assembly of claim 1, wherein the positioning module comprises a cavity for accommodating the core leg and the coil, a positioning assembly disposed on a bottom surface of the cavity for cooperating with the guide assembly, and a limiting structure for limiting a movement of the magnetic armature.

4. The drive assembly of claim 1, wherein the core legs are mated in pairs to form a core leg group, two core legs in the core leg group correspondingly controlling switching of two rf terminals or correspondingly controlling switching between an rf terminal and a ground terminal.

5. The drive assembly of claim 4, wherein the set of core legs includes a base, a first core leg disposed on the base, and a second core leg disposed on the base; the magnetic armature is fixed on the positioning module through the rotating shaft, one end of the magnetic armature is positioned above the first iron core column, the other end of the magnetic armature is positioned above the second iron core column, and the magnetic armature rotates along with the generation and disappearance of the magnetic field of the iron core column and approaches to or is far away from the iron core column below.

6. The drive assembly of claim 4, wherein the set of core legs further comprises permanent magnets for achieving de-energized retention when two core legs of the set of core legs correspondingly control switching between a radio frequency terminal and a ground terminal.

7. A single pole, multiple throw radio frequency switch comprising a connector assembly of terminals, a conducting assembly for conducting or disconnecting between the terminals, a drive assembly for driving the conducting assembly according to any one of claims 1 to 6, and a control mechanism electrically connected to the drive assembly.

8. The single pole, multi throw radio frequency switch of claim 7, wherein the connector assembly includes a common terminal and 3-12 radio frequency terminals.

9. The single pole, multi throw radio frequency switch of claim 8, wherein the connector assembly further comprises a ground terminal in one-to-one correspondence with the radio frequency terminals.

10. The single pole, multi-throw radio frequency switch of claim 7, wherein the pass-through assembly comprises a base plate of the connector assembly and a push rod assembly disposed on the base plate, the push rod assembly establishing a connection between the two terminals;

The push rod assembly comprises a conductive sheet, a connecting rod linked with 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.