Connecting rod transmission synchronous switching structure of single-pole double-throw on-load radio frequency switch

Abstract

The invention relates to the technical field of radio frequency switches, in particular to a connecting rod transmission synchronous switching structure of a single-pole double-throw on-load radio frequency switch. A first channel switching board and a second channel switching board; the conductor reeds are arranged below the two ends of the first channel switching plate and the two ends of the second channel switching plate, penetrate through the base and are riveted with reed ejector rods; the electromagnetic coil and the coil iron core are only arranged above the two ends of the second channel switching plate, and the coil iron core is arranged on the inner side of the electromagnetic coil. The center connecting rod is adopted to connect the two groups of symmetrical channel switching plates, the change is small, the structure is compact, the internal space is optimized, the assembly time is reduced and the efficiency is improved because a group of electromagnetic components such as a channel switching electromagnetic coil are cancelled, and the heat generated in the switch is less because the heating components such as the electromagnetic coil after being electrified are reduced, so that the service life of the switch is prolonged. And part of parts of the structure are reduced, so that the material cost and the processing cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radio frequency switch, in particular to a single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure. BACKGROUND

[0002] In order to synchronously connect the 2-channel to the external load when the 0-1 channel is turned on, the existing single-pole double-throw type load carrying radio frequency switch needs to set two groups of channel switching plate structures. The connectors of the 1-channel and 2-channel are synchronously switched when the common end connector is turned on, and the opposite channel connector is turned on with the load end. Each group of switching plates needs two electromagnetic coils and one permanent magnet to form a magnetic field loop. Thus, four electromagnetic coils and two permanent magnets are needed in one switch. The iron core is inserted into the four electromagnetic coils. After being electrified, the iron core generates a magnetic field. The magnetic force on the iron core makes the radio frequency switch produce a switching action. This switching structure has the following problems: 1. Large number of parts, complex structure and high cost; 2. Many and complex assembly processes, which affect production efficiency; 3. Large heat generation of the coil, high failure rate; 4. Limited miniaturization space.

[0003] Therefore, the single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure is provided to solve the above technical problems. SUMMARY

[0004] In order to solve the problems in the background art, the single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure is provided.

[0005] The single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure provided by the present application adopts the following technical scheme: The single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure comprises: a fixed base; a first channel switching plate and a second channel switching plate, which are rotatably installed on the fixed base through a pin shaft; a conductor spring, which is arranged below both ends of the first channel switching plate and the second channel switching plate, penetrates the base and is riveted with a spring top rod, and is used for connecting or disconnecting the channel and the load; an electromagnetic coil and a coil iron core, which are arranged above both ends of the second channel switching plate, and the coil iron core is arranged inside the electromagnetic coil; a center connecting rod, which is rotatably connected to the fixed base through a connecting rod pin shaft, and the ends thereof are connected to the ends of the first channel switching plate and the second channel switching plate, so that the first channel switching plate and the second channel switching plate can rotate in the same direction when the electromagnetic coil is electrified.

[0006] By adopting the technical scheme, the two groups of symmetrical channel switching plates are connected by the center connecting rod, the structure is compact, the internal space is optimized, the assembly time is reduced and the efficiency is improved due to the cancellation of a group of channel switching electromagnetic coils and other electromagnetic components, the heat generated in the switch is less due to the reduction of the electromagnetic coils and other heating components after being powered, the failure rate is reduced, and the structure reduces some parts, thereby reducing the material and processing costs.

[0007] Optionally, U-shaped grooves are formed at two ends of the center connecting rod, movable grooves are formed at one end of the center connecting rod on the inner side of the first channel switching plate and the second channel switching plate, shafts are press-fitted in the inner side of the movable grooves, and the center connecting rod is connected with the shafts through the U-shaped grooves, thereby forming a connecting rod and sliding block mechanism. By adopting the technical scheme, the two groups of symmetrical channel switching plates are connected by the center connecting rod, and the excellent synchronism between the two groups of switching plates can be ensured by setting a reasonable cooperation gap.

[0008] Optionally, nylon gaskets are arranged between the center connecting rod and the fixed base. By adopting the technical scheme, the friction between the center connecting rod and the fixed base can be reduced, and the service life thereof is improved.

[0009] Optionally, an elastic pre-tightening mechanism is arranged between the center connecting rod and the shaft, and is used for eliminating the cooperation gap caused by long-term wear. By adopting the technical scheme, the cooperation gap caused by long-term wear of the shaft can be eliminated.

[0010] Optionally, the elastic pre-tightening mechanism is a U-shaped elastic piece, and the U-shaped elastic piece is embedded in the inner side of the U-shaped groove and matched with the U-shaped groove. By adopting the technical scheme, the cooperation gap caused by long-term wear of the shaft can be eliminated by the design of the U-shaped elastic piece, the service life thereof is greatly improved, and the structure is simple and the cost is low.

[0011] Optionally, a heat dissipation channel is formed in the inner side of the coil core. By adopting the technical scheme, the temperature of the coil core during use can be effectively reduced, and the influence of the slight deformation of the coil core caused by the high temperature on the switching precision is reduced.

[0012] Optionally, a redundant holding magnetic ring is embedded in the inner side of the bottom of the coil core, is used for providing holding force after the electromagnetic coil is powered off, and prevents mis-switching, and a heat dissipation hole matched with the heat dissipation channel is formed in the inner side of the redundant holding magnetic ring. By adopting the technical scheme, holding force can be provided after the electromagnetic coil is powered off, and mis-switching can be prevented.

[0013] Optionally, the mandrel comprises a shaft body press-fitted inside the movable slot and a roller rotatably connected outside the shaft body, the roller being matched with the U-shaped spring.

[0014] By adopting the above technical scheme, the roller is arranged to replace the contact between the mandrel body and the U-shaped spring, and the rolling friction between the roller and the U-shaped spring is used to replace the sliding friction between the mandrel and the U-shaped spring, so that the friction mode of the contact end is changed, and the service life of the mandrel is improved.

[0015] Optionally, the U-shaped spring is provided in two, and is arranged on the two sides inside the U-shaped slot, a clamping strip is arranged outside the closed end of the U-shaped spring, a clamping groove matched with the clamping strip is arranged on the two sides inside the center link, a connecting buckle is arranged at one end of the two U-shaped springs close to each other, the two connecting buckles are buckled to each other, and a dismounting groove is arranged on the two sides of the bottom of the U-shaped slot and below the U-shaped spring.

[0016] By adopting the above technical scheme, the two U-shaped springs are arranged symmetrically, the lateral force can be significantly offset, the mandrel can be prevented from shaking or eccentric wear in the U-shaped slot, the movement precision and stability are improved, the U-shaped spring can be quickly installed through the cooperation of the clamping strip and the clamping groove, the U-shaped spring can be prevented from falling off during use through the design of the connecting buckle, and the U-shaped spring can be conveniently dismounted through the design of the dismounting groove, so that when the U-shaped spring is worn or the elasticity is lost, the entire slider or the main body of the mechanism does not need to be dismounted, and only the U-shaped spring needs to be replaced.

[0017] Optionally, an adjusting screw is threadedly connected to the inside of the center link and above the U-shaped slot.

[0018] By adopting the above technical scheme, the initial pre-tightening force of the U-shaped spring on the mandrel can be finely adjusted during installation or maintenance, different working conditions or manufacturing tolerances can be adapted, and the gap caused by the loss of elastic force of the U-shaped spring can be actively compensated.

[0019] In summary, the present application has at least one of the following beneficial technical effects: The present application adopts the center link to connect two groups of symmetrical channel switching plates, has small changes, compact structure, and optimizes the internal space, cancels a group of channel switching electromagnetic coils and other electromagnetic components, reduces the assembly time, improves the efficiency, reduces the heat generation of the switch due to the reduction of the electromagnetic coil and other heating components after being electrified, reduces the failure rate, reduces part of the structure, and reduces the material and processing cost; The present application provides a holding force after the electromagnetic coil is powered off, and prevents mis-switching.

[0020] The application can eliminate the matching gap caused by long-term wear of the mandrel, greatly improve the service life, and has simple structure and low cost.

[0021] The two U-shaped elastic sheets are symmetrically arranged, which can significantly offset the lateral force, prevent the mandrel from shaking or eccentric wear in the U-shaped groove, improve the motion precision and stability, and the U-shaped elastic sheet can be quickly installed through the cooperation of the clamping strip and the clamping groove, and the U-shaped elastic sheet is prevented from falling off during use through the design of the connecting buckle, and the U-shaped elastic sheet is convenient to disassemble through the design of the disassembly groove, when the U-shaped elastic sheet is worn or elastic failure, the whole slider or the main body of the mechanism does not need to be disassembled, and only the U-shaped elastic sheet needs to be replaced.

[0022] The initial pre-tightening force of the U-shaped elastic sheet on the mandrel can be fine-tuned during installation or maintenance through the design of the adjusting screw, so as to adapt to different working conditions or compensate for manufacturing tolerances, and the gap caused by the lack of elastic force of the U-shaped elastic sheet can be actively compensated. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic diagram of the single-throw double-throw type load-bearing radio frequency switch connecting rod transmission synchronous switching structure of the embodiment of the application.

[0024] Figure 2 It is a front view structure schematic diagram of the embodiment of the application.

[0025] Figure 3 It is a cross-sectional structure schematic diagram of the embodiment of the application.

[0026] Figure 4 It is a structure schematic diagram of the center connecting rod, the first channel switching plate and the second channel switching plate of the embodiment of the application.

[0027] Figure 5 It is a structure schematic diagram of the U-shaped elastic sheet of the embodiment of the application.

[0028] Figure 6 It is a structure schematic diagram of the mandrel when the mandrel does not appear wear.

[0029] Figure 7 It is a structure schematic diagram of the mandrel when the mandrel appears wear.

[0030] Figure 8 It is a structure schematic diagram of the heat dissipation channel and the redundant holding magnetic ring of the embodiment of the application.

[0031] Figure 9 It is a structure schematic diagram of the roller of the embodiment of the application.

[0032] Figure 10 It is a structure schematic diagram of the connecting buckle of the embodiment of the application.

[0033] Figure 11 is a structural schematic diagram of the card slot of the embodiment of the present application.

[0034] Figure 12 is a structural schematic diagram of the card slot of the embodiment of the present application.

[0035] Figure 13 is a structural schematic diagram of the adjusting screw of the embodiment of the present application.

[0036] Legend of reference signs: 1, fixed base; 2, conductor spring; 3, switching plate pin shaft; 4, spring top rod; 5, first channel switching plate; 6, connecting rod pin shaft; 7, nylon gasket; 8, center connecting rod; 9, mandrel; 10, second channel switching plate; 11, coil core; 12, electromagnetic coil; 13, return spring; 14, top plate; 15, connecting column; 16, movable slot; 17, U-shaped slot; 18, U-shaped spring; 19, heat dissipation channel; 20, redundant holding magnetic ring; 21, shaft body; 22, roller; 23, connecting buckle; 24, dismounting slot; 25, card strip; 26, card slot; 27, adjusting screw. DETAILED DESCRIPTION

[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the following will combine the accompanying drawings to make a detailed description of the present application. Figures 1-8 The present application will be further described in detail.

[0038] Reference Figures 1-8 The embodiment of the present application provides a single-pole double-throw type load carrying radio frequency switch connecting rod transmission synchronous switching structure, comprising: The fixed base 1 and the top plate 14 are fixedly connected through the connecting columns 15 at the four end corners to form a mounting frame; The first channel switching plate 5 and the second channel switching plate 10 are symmetrically installed on the fixed base and are rotatably installed on the fixed base 1 through the switching plate pin shaft 3 respectively; The conductor spring 2 is arranged below the two ends of the first channel switching plate 5 and the second channel switching plate 10, the conductor spring 2 penetrates the base and is riveted with the spring top rod 4, and is used for connecting or disconnecting the frequency channel and the load; The electromagnetic coil 12 and the coil core 11 are arranged above the two ends of the second channel switching plate 10 only, and the coil core 11 is arranged inside the electromagnetic coil 12; The center connecting rod 8 is rotatably connected to the fixed base 1 through the connecting rod pin shaft 6, and the two ends thereof are connected with the end portions of the first channel switching plate 5 and the second channel switching plate 10 respectively, so that when the electromagnetic coil 12 is powered, the first channel switching plate 5 and the second channel switching plate 10 can rotate in the same direction.

[0039] The conductor spring 2 is abutted against the bottom end face of the fixed base 1 when the reset spring 13 is in a natural state.

[0040] With reference to Figure 4 , the U-shaped groove 17 is arranged at both ends of the center connecting rod 8, the movable groove 16 is arranged at the inner side of one end of the center connecting rod 8 close to the first channel switching plate 5 and the second channel switching plate 10, the mandrel 9 is press-fitted in the inner side of the movable groove 16, the end of the center connecting rod 8 is inserted into the inner side of the movable groove 16 and connected with the mandrel 9 through the U-shaped groove 17, forming a connecting rod sliding block mechanism, so that when the second channel switching plate 10 rotates, the first channel switching plate 5 can be driven to rotate synchronously through the center connecting rod 8, thereby controlling two groups of switches simultaneously through a group of electromagnetic coils.

[0041] In order to improve the wear resistance of the mandrel 9 and the U-shaped groove 17, a low-friction coating layer can be plated on the surface of the mandrel 9 and the inner wall of the U-shaped groove 17 of the center connecting rod 8, and the coating layer can be selected from a molybdenum disulfide-graphene composite dry film.

[0042] The nylon gasket 7 is arranged between the two sides of the center connecting rod 8 and the fixed base 1, so as to reduce the friction between the center connecting rod 8 and the fixed base 1 and improve the service life.

[0043] With reference to Figures 4-7 , the elastic pre-tightening mechanism is arranged between the center connecting rod 8 and the mandrel 9, and is used to eliminate the fitting clearance caused by long-term wear.

[0044] The elastic pre-tightening mechanism is a U-shaped spring 18, the U-shaped spring 18 is embedded in the inner side of the U-shaped groove 17 and matched with it, one end of the U-shaped spring 18 is fixed in the inner side of the U-shaped groove 17 through a screw, and the other end is in a free state, the mandrel 9 moves in the inner side of the U-shaped spring 18, when the mandrel 9 does not wear, the free end of the U-shaped spring 18 is pushed outward to tightly adhere to the inner wall of the U-shaped groove 17, when the mandrel 9 wears, the outer diameter of the mandrel 9 becomes smaller, and the free end of the U-shaped spring 18 is retracted inward under the elasticity of itself and still tightly adheres to the outer wall of the mandrel 9, so as to compensate for the fitting clearance caused by the wear of the mandrel 9 and improve the switching precision of the radio frequency switch, thereby greatly improving the service life.

[0045] With reference to Figure 8 , the heat dissipation channel 19 is arranged in the inner side of the coil core 11, and the mounting screw hole is arranged in the top outer periphery of the heat dissipation channel 19, so as to facilitate disassembly and assembly without affecting heat dissipation.

[0046] With reference to Figure 8 , the redundant holding magnetic ring 20 is embedded in the inner side of the bottom of the coil core 11, and is used to provide holding force after the electromagnetic coil 12 is powered off, so as to prevent mis-switching, and the heat dissipation hole matched with the heat dissipation channel 19 is arranged in the inner side of the redundant holding magnetic ring 20.

[0047] With reference toFigure 9 The shaft 9 includes a shaft body 21 press-fitted inside the movable groove 16 and a roller 22 rotatably connected outside the shaft body 21. The roller 22 is matched with the U-shaped elastic sheet 18. The roller 22 is arranged to replace the contact between the shaft body 21 of the shaft 9 and the U-shaped elastic sheet 18. The rolling friction between the roller 22 and the U-shaped elastic sheet 18 replaces the sliding friction between the shaft 9 and the U-shaped elastic sheet 18. The friction mode of the contact end is changed, thereby improving the service life of the shaft 9.

[0048] With reference to Figures 10-12 The U-shaped elastic sheet 18 is provided in two, which are respectively arranged on the two sides inside the U-shaped groove 17. The U-shaped elastic sheet 18 is provided with a clamping strip 25 outside the closed end. The center connecting rod 8 is provided with a clamping groove 26 matched with the clamping strip 25 on the two sides inside. The two U-shaped elastic sheets 18 are fixed with a connecting buckle 23 at one end close to each other. The two connecting buckles 23 are buckled to each other.

[0049] It should be noted that the connecting buckle 23 is designed to have a certain elasticity. When the two U-shaped elastic sheets 18 are close to each other, the two connecting buckles 23 are buckled together after abutting against each other. During buckling, the two connecting buckles 23 abut against each other first, so that the heads of the two are away from each other. Then the heads are reset to be buckled to each other under the elastic force of the heads.

[0050] The dismounting grooves 24 are arranged on the two sides of the bottom of the U-shaped groove 17 and below the U-shaped elastic sheet 18. The dismounting grooves 24 are prearranged to facilitate the dismounting of the U-shaped elastic sheet 18. When dismounting, the two buckled connecting buckles 23 are pried apart to be separated. Then the U-shaped elastic sheet 18 is clamped by inserting a tweezer into the inside of the dismounting groove 24. The two U-shaped elastic sheets 18 are symmetrically arranged, which can significantly offset the lateral force, prevent the shaft 9 from shaking or eccentric wear in the U-shaped groove 17, improve the motion accuracy and stability, and facilitate the quick installation of the U-shaped elastic sheet 18 through the cooperation of the clamping strip 25 and the clamping groove 26. The design of the connecting buckle 23 prevents the U-shaped elastic sheet 18 from falling off during use.

[0051] The design of the dismounting groove 24 facilitates the dismounting of the U-shaped elastic sheet 18. When the U-shaped elastic sheet 18 is worn or the elasticity is lost, the entire slide or mechanism body does not need to be dismounted. Only the U-shaped elastic sheet 18 needs to be replaced. Thus, the U-shaped elastic sheet 18 can be replaced without dismounting the entire structure, improving the convenience of dismounting and the service life of the product.

[0052] With reference to Figure 13 The adjusting screw 27 is threadedly connected to the inside of the center connecting rod 8 and above the U-shaped groove 17. Thus, the initial pre-tightening force of the U-shaped elastic sheet 18 on the shaft 9 can be fine-tuned during installation or maintenance to adapt to different working conditions or compensate for manufacturing tolerances. The adjusting screw 27 can also actively compensate for the gap caused by the loss of elastic force when the elastic force of the U-shaped elastic sheet 18 is not good.

[0053] The implementation principle of the single-throw double-pole type load carrying radio frequency switch connecting rod transmission synchronous switching structure of the embodiment of the present application is as follows: When the electromagnetic coil 12 is powered, a magnetic force is generated to attract one end of the second passage switching plate 10 to rotate around the switching plate pin shaft 3. When the second passage switching plate 10 rotates, the end close to the electromagnetic coil 12 rises, and the end away from the electromagnetic coil 12 falls, driving the center connecting rod 8 to rotate, so that the end close to the second passage switching plate 10 falls, and the end close to the first passage switching plate 5 rises, thereby driving the first passage switching plate 5 to rise at the end close to the second passage switching plate 10, i.e. making the first passage switching plate 5 and the second passage switching plate 10 rotate in the same direction, thereby achieving the effect of simultaneously controlling two groups of passage switching plates by one group of passage switching electromagnetic coils.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A single-pole double-throw RF switch link drive synchronous switching structure, characterized in that, The utility model relates to a kind of frequency channel switch, including: Fixed base (1); First channel switch plate (5) and second channel switch plate (10) are rotatably installed in the fixed base (1) by switch plate pin shaft (3) respectively; Conductor spring leaf (2) is equipped in the lower side of both ends of first channel switch plate (5) and second channel switch plate (10), the conductor spring leaf (2) is riveted with spring leaf top rod (4) and is connected with load for the on or off of frequency channel,; Electromagnetic coil (12) and coil core (11) are only set on the upper side of both ends of second channel switch plate (10), and the coil core (11) is arranged in the inside of electromagnetic coil (12); Center link (8) is rotatably connected on fixed base (1) by connecting rod pin shaft (6), and the end of the center link (8) is connected with the end of first channel switch plate (5) and second channel switch plate (10) respectively, so that when electromagnetic coil (12) is energized, first channel switch plate (5) and second channel switch plate (10) can rotate in the same direction.

2. The single-pole double-throw RF on-load switch link drive synchronous switching structure according to claim 1, characterized in that, U-shaped groove (17) is formed in both ends of the center link (8), and movable groove (16) is formed in the inside of one end of the center link (8) close to first channel switch plate (5) and second channel switch plate (10), and core shaft (9) is press-fitted in the inside of movable groove (16), the center link (8) is connected with core shaft (9) by U-shaped groove (17), forming connecting rod sliding block mechanism.

3. The single-pole double-throw RF on-load switch link drive synchronous switching structure according to claim 2, characterized in that, Nylon gasket (7) is arranged between the center link (8) and the fixed base (1).

4. The single-pole double-throw RF on-load switch link drive synchronous switching structure according to claim 2, characterized in that, Elastic pre-tightening mechanism is arranged between the center link (8) and the core shaft (9) to eliminate the fitting gap caused by long-term wear.

5. The single-pole double-throw RF on-load switch link drive synchronous switching structure according to claim 4, characterized in that, The elastic pre-tightening mechanism is U-shaped spring (18), which is embedded in the inside of U-shaped groove (17) and matched therewith.

6. The single-pole double-throw RF on-load switch link rod drive synchronous switching structure according to claim 1, characterized in that, Cooling channel (19) is formed in the inside of coil core (11).

7. The single-pole double-throw RF on-load switch link drive synchronous switching structure according to claim 6, characterized in that, Redundant holding magnetic ring (20) is embedded in the inside of the bottom of coil core (11) to provide holding force after the power-off of electromagnetic coil (12) to prevent mis-switching, and cooling hole matched with the cooling channel (19) is formed in the inside of the redundant holding magnetic ring (20).

8. The single-pole double-throw RF on-load switch link rod drive synchronous switching structure according to claim 5, characterized in that, The core shaft (9) includes shaft body (21) press-fitted in the inside of movable groove (16) and roller (22) rotatably connected to the outside of the shaft body (21), and the roller (22) is matched with the U-shaped spring (18).

9. The single-pole double-throw RF on-load switch link rod drive synchronous switching structure according to claim 5, characterized in that, Two U-shaped springs (18) are arranged in the inside of U-shaped groove (17) respectively, and clamping strip (25) is arranged on the outside of the closed end of the U-shaped spring (18), and clamping groove (26) matched with the clamping strip (25) is formed in the inside of the center link (8) on both sides, and connecting buckle (23) is fixed to one end of the two U-shaped springs (18) close to each other, the two connecting buckles (23) are buckled with each other, and dismounting groove (24) is formed in the bottom of U-shaped groove (17) below the U-shaped spring (18).

10. The single-pole double-throw RF on-load switch link rod drive synchronous switching structure according to claim 5, characterized in that, Adjusting screw (27) is threadedly connected to the inside of the center link (8) above U-shaped groove (17).

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