Coaxial radio frequency switch

Abstract

The invention discloses a coaxial radio frequency switch. The coaxial radio frequency switch comprises a connector, a radio frequency module and a driving module, the connector comprises a shell and a conductor arranged in the shell. The radio frequency module comprises a first cover plate, a push rod assembly and an elastic piece, the push rod assembly comprises a body embedded in the first cover plate and a push rod arranged on the body, the elastic piece is installed on the push rod, and a groove is formed in the tail end of the elastic piece. The driving end of the driving module is connected with the push rod assembly, and the driving module is used for driving the push rod assembly to move towards the connector, so that the elastic sheet abuts against the conductor. Through the arrangement, the influence of chippings generated when the tail end of the elastic piece is in contact with the conductor on electric signal transmission can be reduced.

Description

Technical Field

[0001] The invention relates to the field of electronic components, and in particular to a coaxial radio frequency switch. Background Art

[0002] With the development of the communications industry, the requirements for chips and chip testing are becoming higher and higher. The coaxial RF switch is a special type of electromechanical relay (or switch) in which the RF signal is connected or disconnected between the terminals in the switch. Usually, the coaxial RF switch uses a push rod to push the movable conductive sheet to contact a pair of coaxial connector terminals and connect the RF signal path between the two coaxial connector terminals. However, after the conductive sheet is in contact with the end face of the terminal for a long time, the end face of the terminal is prone to debris, which affects the conduction of the electrical signal and causes certain errors in the detection of the chip.

[0003] Therefore, it is necessary to provide a coaxial radio frequency switch to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a coaxial radio frequency switch, which can reduce debris on the end surface of the conductor in the component and improve the electrical signal conduction of the coaxial radio frequency switch.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A coaxial radio frequency switch, comprising:

[0007] A connector, comprising a housing and a conductor disposed in the housing;

[0008] A radio frequency module, comprising a first cover plate, a push rod assembly and a spring sheet, wherein the push rod assembly comprises a body embedded in the first cover plate and a push rod arranged on the body, the spring sheet is mounted on the push rod, and a groove is arranged at the end of the spring sheet;

[0009] A driving module, wherein a driving end of the driving module is connected to the push rod assembly and is used to drive the push rod assembly to move toward the connector so that the spring sheet abuts against the conductor.

[0010] Furthermore, the spring sheet is sleeved and fixed on the push rod, and the spring sheet includes a fixed portion fixedly contacting the push rod and a first contact portion away from the push rod, and the groove is arranged at the end of the first contact portion. When the driving module drives the push rod assembly to move, the first contact portion is driven to contact the bottom of the conductor and bend and deform relative to the fixed portion.

[0011] Further, the conductor includes a main body and a second contact portion formed at the bottom of the main body, the main body is arranged in the shell, the second contact portion extends out of the shell, the first contact portion and the second contact portion are arranged opposite to each other, the first contact portion has a first contact surface on a side facing the second contact portion, the second contact portion has a second contact surface on a side facing the first contact portion, the second contact surface is spherical, and the second contact surface is in surface-to-surface contact with the first contact surface.

[0012] Furthermore, a recessed portion is provided at the center of the second contact portion.

[0013] Furthermore, the coaxial RF switch also includes a second cover plate, which is connected to the first cover plate, and the second cover plate has a cavity on the side facing the first cover plate, at least part of the push rod and the spring are located in the cavity, the second cover plate also has a mounting hole, the mounting hole is connected to the cavity, the shell is arranged in the mounting hole, and the second contact portion extends into the cavity through the mounting hole.

[0014] Furthermore, the shell is threadedly connected to the hole wall of the mounting hole.

[0015] Furthermore, a positioning groove is provided on a side of the second cover plate facing the first cover plate, and the positioning groove is provided on the bottom wall of the cavity. When the driving module drives the push rod assembly to move, the push rod moves to the positioning groove.

[0016] Furthermore, a mounting groove is provided on a side of the first cover plate away from the second cover plate, the body is arranged in the mounting groove, and the first cover plate has a through hole, which is communicated with the mounting groove.

[0017] Furthermore, the coaxial RF switch also includes an elastic element arranged in the mounting groove, the push rod assembly includes two adjacent push rod assemblies, the elastic element connects the two adjacent push rod assemblies, when the driving module drives one of the push rod assemblies to move, the elastic element elastically deforms to store energy, and when the driving module does not provide power, the elastic element releases the stored energy to reset the push rod assembly.

[0018] Furthermore, the elastic element is in the shape of a hollow sheet, comprising a bent portion in the middle and two connecting portions at both ends of the bent portion, the main bodies of two adjacent push rod assemblies are respectively provided with matching grooves, and the elastic element is mounted in the matching grooves of the main bodies of the two adjacent push rod assemblies.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The present invention discloses a coaxial radio frequency switch, which includes a connector, a radio frequency module and a driving module, which are arranged from top to bottom in sequence. A push rod is arranged on a body, and a spring is installed on the push rod. The driving module drives the push rod through the body to drive the spring to move toward the conductor, so that the spring is in contact with the conductor. At the same time, a groove is arranged at the end of the spring to collect debris generated when the end of the spring contacts the conductor, so as to reduce the impact of the debris on the transmission of electrical signals between the spring and the conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the connector, the radio frequency module, and the second cover plate of the coaxial radio frequency switch of the present invention;

[0022] Figure 2 to Figure 1 A three-dimensional schematic diagram from another angle;

[0023] Figure 3 Yes Yes Figure 1 A top view of

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross section along line AA;

[0025] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B;

[0026] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional decomposition of

[0027] Figure 7 yes Figure 1 A three-dimensional schematic diagram from another angle;

[0028] Figure 8 yes Figure 1 A three-dimensional schematic diagram of the RF module;

[0029] Fig. 9 yes Figure 8 A partial enlarged schematic diagram of part C in the middle;

[0030] Fig.10 It is a three-dimensional schematic diagram of the push rod assembly, the spring sheet and the elastic element in the present invention;

[0031] Fig.11 It is a three-dimensional schematic diagram of the push rod assembly and the spring piece in the present invention;

[0032] Fig.12 It is a front view of the shrapnel in the present invention;

[0033] Fig.13 yes Fig.12A partial enlarged schematic diagram of part D in the middle;

[0034] Fig.14 yes Fig.12 A partial enlarged schematic diagram of part E in the middle;

[0035] Fig.15 It is a three-dimensional schematic diagram of the push rod in the present invention.

[0036] Description of reference numerals:

[0037] 100. Coaxial RF switch;

[0038] 1. Connector; 11. Housing; 12. Conductor; 121. Main body; 122. Second contact portion; 1221. Second contact surface; 1222. Concave portion;

[0039] 2. RF module; 21. first cover plate; 211. third surface; 212. fourth surface; 2121. mounting groove; 22. push rod assembly; 221. body; 2211. matching groove; 222. push rod; 2221. step portion; 223. fastener; 23. spring piece; 231. groove; 232. fixing portion; 201. first through hole; 233. first contact portion; 2331. first contact surface;

[0040] 3. Second cover plate; 301. Receptacle; 302. Mounting hole; 303. Positioning groove; 31. First surface; 32. Second surface; 321. Groove portion;

[0041] 4. Elastic element; 41. Bending portion; 42. Connecting portion. DETAILED DESCRIPTION

[0042] The exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0043] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0044] Please refer to Figures 1 to 15The present invention discloses a coaxial RF switch 100, which includes a connector 1, a RF module 2 and a driving module (not shown), and the connector 1, the RF module 2 and the driving module are arranged from top to bottom in sequence. The connector 1 includes a housing 11 and a conductor 12 disposed in the housing 11. The RF module 2 includes a first cover plate 21, a push rod assembly 22 and a spring 23. The push rod assembly 22 includes a body 221 embedded in the first cover plate 21 and a push rod 222 disposed in the body 221. The spring 23 is installed on the push rod 222 and can move with the push rod 222. A groove 231 is provided at the lateral end of the spring 23. The driving end of the driving module is connected to the push rod assembly 22, and is used to drive the push rod assembly 22 to move toward the connector 1 so that the spring 23 abuts against the conductor 12. Specifically, the lateral end of the spring 23 abuts against the conductor 12. By setting a groove 231 at the end of the spring 23, debris generated when the end of the spring 23 contacts the conductor 12 can be collected, thereby preventing the debris from affecting the transmission of electrical signals between the spring 23 and the conductor 12.

[0045] Please refer to Fig.15 The spring piece 23 is sleeved and fixed on the push rod 222. Specifically, the end of the push rod 222 is provided with a step portion 2221, and the spring piece 23 is sleeved on the step portion 2221. The push rod assembly 22 also includes a fastener 223, which is sleeved on the push rod 222 to clamp the spring piece 23. Preferably, the fastener 223 is a nut, which is threadedly connected to the end of the push rod 222. The spring piece 23 includes a fixed portion 232 fixedly contacting the push rod 222 and a first contact portion 233 away from the push rod 222. The groove 231 is provided at the end of the first contact portion 233. When the driving module drives the push rod 222 to move, the first contact portion 233 is driven to contact the bottom of the conductor 12 and bend and deform relative to the fixed portion 232. At this time, the spring piece 23 is bent and deformed by the reaction force of the conductor 12 to store energy, and the debris generated when the spring piece 23 contacts the conductor 12 is collected in the groove 231. When the driving module no longer drives the push rod assembly 22 to move, the push rod 222 loses its thrust, and the spring 23 releases the stored energy and returns to a straight state from a bent state. The groove 231 is closer to the non-contact area in the center of the conductor 12 than in the bent state. At this time, the groove 231 drives the debris to be pushed to the non-contact area, which can reduce the impact of the debris on the transmission of electrical signals.

[0046] Please refer to Figures 4 to 6 as well as Figures 8 to 14In the embodiment of the present application, the spring piece 23 is in the shape of a long strip, and the fixing portion 232 of the spring piece 23 is provided with two first through holes 201. The push rods 222 include two push rods 222, and the same end of the two push rods 222 is connected to the body 221. The two push rods 222 pass through the first cover plate 21 and the two first through holes 201 respectively, and the spring piece 23 is fixedly connected to the two push rods 222, so as to ensure that the two first contact portions 233 of the spring piece 23 can move in the same plane as the fixing portion 232, thereby improving the stability of the spring piece 23 when being pushed. Preferably, the shape of the end of the first contact portion 233 of the spring piece 23 can be pointed, trapezoidal, rectangular, etc. Therefore, the shape of the end of the first contact portion 233 is not limited, and the groove 231 is set at any position of the end of the first contact portion 233, so as to push the debris to the non-contact area of ​​the conductor 12.

[0047] Please refer to Figures 4 to 6 The conductor 12 includes a main body 121 and a second contact portion 122 formed at the bottom of the main body 121. The main body 121 is disposed in the housing 11. The second contact portion 122 extends out of the housing 11. The second contact portion 122 is disposed opposite to the first contact portion 233. The first contact portion 233 has a first contact surface 2331 on the side facing the second contact portion 122. The second contact portion 122 has a second contact surface 1221 on the side facing the first contact portion 233. The second contact surface 1221 is spherical, and the second contact surface 1221 is in spherical contact with the first contact surface 2331. In this way, when the first contact surface 2331 and the second contact surface 1221 are in contact, the debris generated by the friction between them can be reduced, thereby reducing the influence of the debris on the conduction of the electrical signal. When the driving module drives the spring 23 to move toward the connector 1 through the push rod 222, the first contact portion 233 of the spring 23 contacts the second contact portion 122 of the conductor 12. As the push rod 222 further pushes the spring 23 to move toward the conductor 12, the spring 23 is deformed by the reaction force of the conductor 12 to store energy. At this time, the first contact portion 233 of the spring 23 receives the reaction and bends and deforms, and the first contact surface 2331 of the first contact portion 233 is bent into an arc shape. The second contact surface 1221 of the second contact portion 122 is spherical, and the second contact surface 1221 and the first contact surface 2331 are in surface-to-surface contact, which can reduce the generation of debris when rubbing against each other, thereby improving the transmission of electrical signals. At the same time, the arc surface of the first contact surface 2331 and the spherical surface of the second contact surface 1221 increase the contact area, and can also reduce the debris generated by the first contact portion 233 and the second contact portion 122 during contact and friction, thereby improving the service life of the conductor 12 and the spring 23.

[0048] Please refer to Figure 4In the embodiment of the present application, a recessed portion 1222 is provided at the center of the second contact portion 122. Specifically, the recessed portion 1222 is recessed toward a side away from the first contact portion 233, and the second contact surface 1221 is disposed around the recessed portion 1222. In this configuration, the debris collected by the groove 231 is pushed into the recessed portion 1222, which can prevent the debris from being pushed to other positions of the second contact surface 1221, thereby affecting the transmission of the electrical signal.

[0049] Please refer to Figures 1 to 4 as well as Figure 7 The coaxial RF switch 100 further includes a second cover plate 3, and the connector 1 is installed in the second cover plate 3. The second cover plate 3 is stacked and connected with the first cover plate 21, and the second cover plate 3 has a cavity 301 on the side facing the first cover plate 21. Specifically, the second cover plate 3 includes a first surface 31 and a second surface 32 that are arranged oppositely, and the first cover plate 21 includes a third surface 211 and a fourth surface 212 that are arranged oppositely, and the second surface 32 abuts against the third surface 211. The second surface 32 is concavely provided with a plurality of grooves 321, and the plurality of grooves 321 are radially arranged around the center of the second surface 32, and the plurality of grooves 321 are evenly distributed on the second surface 32, and the plurality of grooves 321 form a connected cavity 301, and at least part of the push rod 222 and the spring 23 are located in the cavity 301. The second cover plate 3 further has a mounting hole 302, which is in communication with the cavity 301. The housing 11 is disposed in the mounting hole 302. Preferably, the housing 11 is threadedly connected to the hole wall of the mounting hole 302. The spring piece 23 is disposed in the cavity 301 between the second surface 32 and the third surface 211, and is fixedly connected to the push rod 222. When the driving module drives the push rod assembly 22 to move, the spring piece 23 is driven to move in the cavity 301.

[0050] Please refer to Figure 7 A positioning groove 303 is provided on the side of the second cover plate 3 facing the first cover plate 21, that is, a positioning groove 303 is provided on the bottom wall of the cavity 301. When the driving module drives the push rod assembly 22 to move, the push rod 222 moves into the positioning groove 303 to guide the movement of the push rod assembly 22.

[0051] Please refer to Figure 2 The first cover plate 21 is provided with a mounting groove 2121 on one side away from the second cover plate 3. The mounting groove 2121 is recessed from the fourth surface 212 to one side of the second cover plate 3, and the mounting groove 2121 diverges from the middle thereof. The body 221 of the push rod assembly 22 is arranged in the mounting groove 2121. The first cover plate 21 has a through hole 202, and the through hole 202 is connected to the mounting groove 2121. When the driving module drives the push rod assembly 22 to move, the body 221 moves in the mounting groove 2121, and the push rod 222 is fixedly connected to the body 221 and the two move synchronously. The push rod 222 moves to the positioning groove 303 through the mounting groove 2121, the through hole 202, and the cavity 301 in sequence.

[0052] Please refer to Fig.10 , the coaxial RF switch 100 also includes an elastic element 4 disposed in the mounting groove 2121. The elastic element 4 is in the shape of a hollow sheet, and the elastic element 4 includes a curved portion 41 located in the middle and two connecting portions 42 located at both ends of the curved portion 41. The curved portion 41 can increase the elastic force of the elastic element 4, improve its strength, and increase its service life. The two connecting portions 42 are clamped to the bodies 221 of the two adjacent push rod assemblies 22. Specifically, the two bodies 221 of the adjacent push rod assemblies 22 are respectively provided with matching grooves 2211, and the hollow elastic element 4 is matched with the matching grooves 2211 installed in the two bodies 221. When the drive module drives one of the push rod assemblies 22 to move toward the connector 1, the curved portion 41 abuts against the first cover plate 21, and the elastic element 4 elastically deforms to store energy. When the drive module does not provide power, the elastic element 4 releases the stored energy to reset the push rod assembly 22. Preferably, the elastic element 4 is a spring.

[0053] In summary, the present invention discloses a coaxial RF switch 100, which includes a connector 1, a RF module 2 and a drive module (not shown), and the connector 1, the RF module 2 and the drive module are arranged from top to bottom in sequence. By setting the push rod 222 on the body 221, the spring 23 is installed on the push rod 222, and the drive module drives the push rod 222 through the body 221 to drive the spring 23 to move toward the conductor 12, so that the spring 23 abuts against the conductor 12. At the same time, by setting a groove 231 at the end of the spring 23, it is possible to collect the debris generated when the end of the spring 23 contacts the conductor 12, so as to reduce the impact of the debris on the transmission of electrical signals between the spring 23 and the conductor 12.

[0054] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of explanation and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprise" include the elements appearing after "include" or "comprise" and their equivalents, which does not exclude that the elements appearing before "include" or "comprise" may also include other elements. If "several" appears in the present invention, it means two or more.

[0055] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. For example, the description of directions such as "front", "back", "left", "right", "up", and "down". Although this specification has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A coaxial radio frequency switch, characterized in that: include: A connector (1) comprising a housing (11) and a conductor (12) disposed in the housing (11); A radio frequency module (2), comprising a first cover plate (21), a push rod assembly (22) and a spring sheet (23), wherein the push rod assembly (22) comprises a body (221) embedded in the first cover plate (21) and a push rod (222) arranged on the body (221), the spring sheet (23) is mounted on the push rod (222), and a groove (231) is arranged at the end of the spring sheet (23); A driving module, wherein a driving end of the driving module is connected to the push rod assembly (22) and is used to drive the push rod assembly (22) to move toward the connector (1) so that the spring sheet (23) abuts against the conductor (12).

2. The coaxial radio frequency switch according to claim 1, characterized in that: The spring sheet (23) is sleeved and fixed on the push rod (222), and the spring sheet (23) includes a fixed portion (232) fixedly contacting the push rod (222) and a first contact portion (233) away from the push rod (222). The groove (231) is arranged at the end of the first contact portion (233). When the driving module drives the push rod assembly (22) to move, the first contact portion (233) is driven to contact the bottom of the conductor (12) and bend and deform relative to the fixed portion (232).

3. The coaxial radio frequency switch according to claim 2, characterized in that: The conductor (12) comprises a main body (121) and a second contact portion (122) formed at the bottom of the main body (121); the main body (121) is arranged in the shell (11); the second contact portion (122) extends out of the shell (11); the first contact portion (233) and the second contact portion (122) are arranged opposite to each other; the first contact portion (233) has a first contact surface (2331) on a side facing the second contact portion (122); the second contact portion (122) has a second contact surface (1221) on a side facing the first contact portion (233); the second contact surface (1221) is spherical; and the second contact surface (1221) and the first contact surface (2331) are in surface-to-surface contact.

4. The coaxial radio frequency switch according to claim 3, characterized in that: A recessed portion (1222) is provided at the center of the second contact portion (122).

5. The coaxial radio frequency switch according to claim 3, characterized in that: The coaxial radio frequency switch further comprises a second cover plate (3), the second cover plate (3) being connected to the first cover plate (21), the second cover plate (3) having a cavity (301) on a side facing the first cover plate (21), at least part of the push rod (222) and the spring sheet (23) being located in the cavity (301), the second cover plate (3) further comprising a mounting hole (302), the mounting hole (302) being connected to the cavity (301), the housing (11) being arranged in the mounting hole (302), and the second contact portion (122) extending into the cavity (301) through the mounting hole (302).

6. The coaxial radio frequency switch according to claim 5, characterized in that: The housing (11) is threadedly connected to the hole wall of the mounting hole (302).

7. The coaxial radio frequency switch according to claim 5, characterized in that: A positioning groove (303) is provided on the side of the second cover plate (3) facing the first cover plate (21), and the positioning groove (303) is provided on the bottom wall of the cavity (301). When the driving module drives the push rod assembly (22) to move, the push rod (222) moves to the positioning groove (303).

8. The coaxial radio frequency switch according to claim 5, characterized in that: A mounting groove (2121) is provided on a side of the first cover plate (21) away from the second cover plate (3), the body (221) is arranged in the mounting groove (2121), and the first cover plate (21) has a through hole (202), and the through hole (202) is connected to the mounting groove (2121).

9. The coaxial radio frequency switch according to claim 8, characterized in that: The coaxial radio frequency switch further comprises an elastic element (4) arranged in the mounting groove (2121); the push rod assembly (22) comprises two push rod assemblies (22) arranged adjacent to each other; the elastic element (4) connects the two adjacent push rod assemblies (22); when the driving module drives one of the push rod assemblies (22) to move, the elastic element (4) elastically deforms to store energy; when the driving module does not provide power, the elastic element (4) releases the stored energy to reset the push rod assembly (22).

10. The coaxial radio frequency switch according to claim 9, characterized in that: The elastic element (4) is in the shape of a hollow sheet, and comprises a bent portion (41) located in the middle and two connecting portions (42) located at both ends of the bent portion (41). The main bodies (221) of two adjacent push rod assemblies (22) are respectively provided with matching grooves (2211), and the elastic element (4) is matched and installed in the matching grooves (2211) of the main bodies (221) of the two adjacent push rod assemblies (22).

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