Bidirectional coaxial switch connector

Abstract

The utility model discloses a bidirectional coaxial switch connector, which is used for being mounted on a PCB (printed circuit board) with an opening, and comprises a plastic shell, an upper rubber core, a lower rubber core, an upper terminal group and a lower terminal group, the upper terminal group is arranged in the upper rubber core, the lower terminal group is arranged in the lower rubber core, the plastic shell comprises an upper accommodating body and a lower accommodating body which are integrally connected, and the upper accommodating body and the lower accommodating body are integrally connected. The upper rubber core is arranged in the upper containing body, the lower rubber core is arranged in the lower containing body, at least part of the upper containing body is located in the open hole, and the lower containing body is located on the outer side of the open hole. Compared with the prior art, according to the bidirectional coaxial switch connector required to be protected by the invention, the integrated plastic shell with the bidirectional opening is arranged, and the upper rubber core, the lower rubber core, the upper terminal group and the lower terminal group are correspondingly arranged in the integrated plastic shell; the coaxial switch connector realizes simultaneous radio frequency signal transmission of detection probes of two specifications on the same coaxial switch connector, and part of the connector is arranged on the inner side of the PCB, so that the height of the whole connector is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connectors, in particular to a bidirectional coaxial switch connector applied to a PCB board with an opening. Background Art

[0002] With the advancement of science and technology, the development of the times, and the improvement of manufacturing level, people are pursuing higher and higher miniaturization of products. Therefore, the market has put forward higher requirements for the miniaturization of coaxial connectors. The miniature RF coaxial connectors currently on the market include a signal terminal composed of a movable terminal and a fixed terminal, an upper and lower insulator, and a main body composed of a shell conductor. The movable terminal and the fixed terminal are in contact with each other to form an electrical path. When an external force is applied, the movable terminal is pushed by the external force and then disconnected from the fixed terminal. When the external force disappears, the movable terminal returns to its original state with the help of its own rebound force and contacts the fixed terminal, thereby having the switching function of electrical disconnection and electrical connection.

[0003] With the development of miniaturization, the existing coaxial connectors do not have the function of simultaneous detection by probes in two directions, and in order to make the RF head have a sufficiently small shape and size, the existing movable terminal cannot provide sufficient rebound force. At this time, the stress usually relaxes, and the stress is excessively concentrated at the bending deformation position of the elastic arm. When the RF is used in the detection process, the movable terminal will be subjected to a certain downward pressure from the test probe, and then plastic deformation will occur. The rebound force of the elastic arm will be weakened, resulting in a reduction in the contact force between the movable terminal and the fixed terminal or disconnection of the contact, which will increase the contact resistance of the coaxial connector or cause functional unreliability problems such as switch abnormality. Utility Model Content

[0004] Based on the above technical problems, an embodiment of the present application provides a bidirectional coaxial switch connector that can realize bidirectional signal transmission on the same PCB board while ensuring that the movable terminal has sufficient elastic restoring force.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a bidirectional coaxial switch connector, used to be installed on a PCB board with an opening, comprising: a plastic shell, an upper plastic core, a lower plastic core, an upper terminal group, and a lower terminal group, the upper terminal group is arranged in the upper plastic core, and the lower terminal group is arranged in the lower plastic core, the plastic shell includes an upper containing body and a lower containing body connected as one piece, the upper plastic core is arranged in the upper containing body, and the lower plastic core is arranged in the lower containing body, the upper containing body is at least partially located in the opening, and the lower containing body is located outside the opening.

[0006] Furthermore, the upper container has a first through-opening protruding upward, the upper rubber core includes an insulating upper seat and a first insulating base, and the insulating upper seat is provided with a first pinhole hole that cooperates with the first through-opening; the lower container has a second through-opening protruding downward, the lower rubber core includes an insulating lower seat and a second insulating base, and the insulating lower seat is provided with a second pinhole hole that cooperates with the second through-opening.

[0007] Furthermore, the diameter of the second through-hole is greater than the diameter of the first through-hole.

[0008] Furthermore, the upper terminal group includes a first movable terminal and a first fixed terminal that overlap each other, and the lower terminal group includes a second movable terminal and a second fixed terminal that overlap each other. The first movable terminal includes a first contact portion, a first elastic arm portion, and a first connecting portion, and the first elastic arm portion is located below the first pinhole. The second movable terminal includes a second contact portion, a second elastic arm portion, and a second connecting portion, and the second elastic arm portion is located above the second pinhole.

[0009] Furthermore, the four outer corners of the lower containing body are connected to the PCB board by welding, and the first connecting portion and the second connecting portion are both connected to the surface of the PCB board.

[0010] Furthermore, the first movable terminal also includes a first supporting portion, which is integrally provided on the left and right sides of the first elastic arm portion and is inclined obliquely downward along the end portion of the first elastic arm portion, and the free end of the first supporting portion is in contact with the upper surface of the first insulating base; the second movable terminal also includes a second supporting portion, which is integrally provided on the left and right sides of the second elastic arm portion and is inclined obliquely upward along the end portion of the second elastic arm portion, and the free end of the second supporting portion is in contact with the lower surface of the second insulating base.

[0011] Furthermore, the first insulating base is provided with a first inclined portion, and the first elastic arm portion contacts the first inclined portion after being subjected to force; the second insulating base is provided with a second inclined portion, and the second elastic arm portion contacts the second inclined portion after being subjected to force.

[0012] Furthermore, the first inclined portion and the second inclined portion are parallel to each other.

[0013] Furthermore, a first through hole is provided between the first connecting portion and the first elastic arm portion of the first movable terminal, and a second through hole is provided between the second connecting portion and the second elastic arm portion of the second movable terminal.

[0014] Furthermore, the first elastic arm portion and / or the second elastic arm portion is a flat plate structure.

[0015] The beneficial effects of the present invention are as follows: by providing an integrated plastic shell with bidirectional openings, corresponding upper and lower plastic cores and upper and lower terminal groups are provided inside the shell, so that two specifications of detection probes can be used for simultaneous radio frequency signal transmission on the same coaxial switch connector, and part of the connector is provided on the inner side of the PCB board, thereby reducing the height of the overall connector; support parts are symmetrically provided on both sides of the elastic arm parts of the two movable terminals, so that the possibility of plastic deformation during probe detection is reduced, thereby ensuring the restoring force of the coaxial switch connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional schematic diagram of a bidirectional coaxial switch connector installed on a PCB board in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the bidirectional coaxial switch connector installed on the PCB board in an embodiment of the utility model;

[0018] Figure 3 This is a structural schematic diagram of another angle of view of the bidirectional coaxial switch connector installed on the PCB board in an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the bidirectional coaxial switch connector in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the exploded structure of the bidirectional coaxial switch connector in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic structural diagram of the plastic housing in an embodiment of the present utility model;

[0022] Figure 7 This is a schematic structural diagram of the first insulating base and the second insulating base in an embodiment of the present utility model;

[0023] Figure 8 This is a schematic structural diagram of the first movable terminal and the second movable terminal in an embodiment of the present utility model;

[0024] Figure 1: 10-plastic shell, 20-upper plastic core, 30-lower plastic core, 40-upper terminal group, 50-lower terminal group, 60-PCB board, 101-upper containing body, 102-lower containing body, 103-first through-hole, 104-second through-hole, 201-insulating upper seat, 202-first insulating base, 2010-first pinhole, 2020-first inclined portion, 301-insulating lower seat, 302-second insulating base, 3010-second pinhole, 3020-first inclined portion Two inclined portions, 401-first fixed terminal, 402-first movable terminal, 501-second fixed terminal, 502-second movable terminal, 4020-first connecting portion, 4021-first elastic arm portion, 4022-first contact portion, 4023-first supporting portion, 4024-first through hole, 5020-second connecting portion, 5021-second elastic arm portion, 5022-second contact portion, 5023-second supporting portion, 5024-second through hole, 601-opening. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] The embodiments of the present application provide a bidirectional coaxial switch connector to solve the technical problem in the prior art that coaxial connectors can only transmit radio frequency signals in one direction. It should be noted that, in this application, the direction of the upper rubber core relative to the lower rubber core is "up," "above," "upper side," "upper end," "top," "top," or "top," while the opposite direction is "down," "below," "lower side," "lower end," "bottom," "bottom end," or "bottom."

[0027] The examples of this application are as follows: Figures 1 to 3 As shown, a bidirectional coaxial switch connector is used to be installed on a PCB board 60 with an opening 601, including: a plastic shell 10, an upper plastic core 20, a lower plastic core 30, an upper terminal group 40, and a lower terminal group 50. The upper terminal group 40 is arranged in the upper plastic core 20, and the lower terminal group 50 is arranged in the lower plastic core 30. The plastic shell 10 includes an upper containing body 101 and a lower containing body 102 that are integrally connected. The upper plastic core 20 is arranged in the upper containing body 101, and the lower plastic core 30 is arranged in the lower containing body 102. The upper containing body 101 is partially located in the opening 601, and the lower containing body 102 is located outside the opening 601.

[0028] Reference Figures 4 to 6The upper containing body 101 has a first through-opening 103 protruding upward, the upper rubber core 20 includes an insulating upper seat 201 and a first insulating base 202, the insulating upper seat 201 is provided with a first pinhole 2010 communicating with the first through-opening 103, and the first insulating base 202 is arranged in the upper containing body 101; the lower containing body 102 has a second through-opening 104 protruding downward, the lower rubber core 30 includes an insulating lower seat 301 and a second insulating base 302, the insulating lower seat 301 is provided with a second pinhole 3010 communicating with the second through-opening 104, and the second insulating base 302 is arranged in the lower containing body 102. The bidirectional coaxial switch connector of this embodiment is formed by stacking an upper and lower plastic cores 20, 30, an upper terminal assembly 40, and a lower terminal assembly 50 in sequence through an integral plastic housing 10, which are then encapsulated by the solder pins of the plastic housing 10. The plastic housing 10 and the terminal assembly are combined together through a process of inlay molding with the plastic core, enabling simultaneous RF signal transmission from two specifications of detection probes on the same coaxial switch connector. A portion of the upper housing 101 is disposed inside the PCB board 60, thereby achieving bidirectional contact while reducing the height of the overall coaxial switch connector.

[0029] The upper container 101 and the lower container 102 are both of a cubic frame structure. Preferably, the volume of the upper container 101 is smaller than that of the lower container 102. Accordingly, the diameter of the second through-hole 104 is larger than the diameter of the first through-hole 103. Figure 3 The four outer corners of the lower container 102 are connected to the PCB board 60 by welding.

[0030] like Figure 8 As shown, the upper terminal assembly 40 includes a first movable terminal 402 and a first fixed terminal 401 that overlap each other, and the lower terminal assembly 50 includes a second movable terminal 502 and a second fixed terminal 501 that overlap each other. The first movable terminal 402 includes a first contact portion 4022, a first elastic arm portion 4021, and a first connecting portion 4020. The first elastic arm portion 4021 is located below the first pinhole 2010. The second movable terminal 502 includes a second contact portion 5022, a second elastic arm portion 5021, and a second connecting portion 5020. The second elastic arm portion 5021 is located above the second pinhole 3010. The first contact portion 4022 is connected to the end of the first fixed terminal 401 within the first housing 101, and the second contact portion 5022 is connected to the end of the second fixed terminal 501 within the second housing 102. The first connecting portion 4020 and the second connecting portion 5020 both extend out of the plastic housing 10 and connect to the surface of the PCB 60.

[0031] More specifically, combined Figure 1The first movable terminal 402 also includes a first support portion 4023, which is integrally provided on the left and right sides of the first elastic arm portion 4021 and is inclined obliquely downward along the end of the first elastic arm portion 4021, and the free end of the first support portion 4023 contacts the upper surface of the first insulating base 202; the second movable terminal 502 also includes a second support portion 5023, which is integrally provided on the left and right sides of the second elastic arm portion 5021 and is inclined obliquely upward along the end of the second elastic arm portion 5021, and the free end of the second support portion 5023 contacts the lower surface of the second insulating base 302.

[0032] Preferably, the first elastic arm portion 4021 and / or the second elastic arm portion 5021 is a flat plate structure. The flat elastic arm portion and the elastic contact portion of the movable terminal are compressed by the fixed terminal. Under the action of the compressive force, they deform downward, thereby elastically contacting the fixed terminal to realize the switching function. At the same time, because the two symmetrical auxiliary force arms (i.e., support portions) of the movable terminal are both supported at the bottom position of the insulating base, when the coaxial switch connector of this embodiment is used in a testing application, the movable terminal is subjected to pressure from the matching adapter probe. The movable elastic arm portion is elastically deformed and displaced downward by the downward pressure of the test probe, realizing the disconnection function of the test socket. When the probe force is too strong, the elastic arm portion will undergo plastic deformation due to stress. At this time, the provision of the support portion greatly reduces the possibility of stress concentration in the elastic arm portion, making the deformation stress distribution more uniform. In addition, the elastic arm portion is flat in its natural state and has no stamping deformation. That is, there is no initial stress in the elastic arm portion, allowing the elastic arm portion to withstand a larger deformation, thereby avoiding the occurrence of plastic deformation of the elastic arm portion, thereby ensuring the reliability of the product's switching function and increasing the product's service life.

[0033] like Figure 7 As shown, the first insulating base 202 is provided with a first bevel 2020, and the first elastic arm 4021 contacts the first bevel 2020 when subjected to force. The second insulating base 302 is provided with a second bevel 3020, and the second elastic arm 5021 contacts the second bevel 3020 when subjected to force. The first bevel 2020 and the second bevel 3020 are parallel to each other. The elastic arms of the two movable terminals deform under the pressure of the fixed terminal assembly to form a bevel. The bevel angles of the bevels in the two insulating bases are substantially the same, making them parallel. In this way, when the elastic arm of the movable terminal is subjected to downward pressure from the probe, the elastic arm moves downward and breaks contact with the fixed terminal. At a certain displacement position, the elastic arm mates with the bevel on the insulating base. This prevents the elastic arm of the movable terminal from plastic deformation due to excessive pressure from the probe, thereby ensuring product reliability. Moreover, since the two bevels tend to be parallel, they mate better, further preventing local deformation caused by overpressure, further ensuring product reliability.

[0034] Preferably, Figure 8A first through-hole 4024 is provided between the first connecting portion 4020 and the first elastic arm 4021 of the first movable terminal 402, and a second through-hole 5024 is provided between the second connecting portion 5020 and the second elastic arm 5021 of the second movable terminal 502. The through-holes provided between the connecting portion and the elastic arm of the movable terminal are used to reduce stress dispersion and prevent flux from penetrating and preventing the device from disconnecting.

[0035] More preferably, in order to achieve more stable contact, a hemispherical convex bump may be provided on the contact portion of the movable terminal.

[0036] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A bidirectional coaxial switch connector for mounting on a PCB with an opening, characterized in that: include: A plastic shell, an upper rubber core, a lower rubber core, an upper terminal group, and a lower terminal group, wherein the upper terminal group is arranged in the upper rubber core, and the lower terminal group is arranged in the lower rubber core. The plastic shell includes an upper containing body and a lower containing body that are integrally connected. The upper rubber core is arranged in the upper containing body, and the lower rubber core is arranged in the lower containing body. The upper containing body is at least partially located in the opening, and the lower containing body is located outside the opening.

2. The bidirectional coaxial switch connector according to claim 1, wherein: The upper containing body has a first through-opening protruding upward, the upper rubber core includes an insulating upper seat and a first insulating base, and a first pinhole hole is provided in the insulating upper seat to cooperate with the first through-opening; the lower containing body has a second through-opening protruding downward, the lower rubber core includes an insulating lower seat and a second insulating base, and a second pinhole hole is provided in the insulating lower seat to cooperate with the second through-opening.

3. The bidirectional coaxial switch connector according to claim 2, wherein: The diameter of the second through-hole is larger than the diameter of the first through-hole.

4. The bidirectional coaxial switch connector according to claim 2, wherein: The upper terminal group includes a first movable terminal and a first fixed terminal that are overlapped with each other, and the lower terminal group includes a second movable terminal and a second fixed terminal that are overlapped with each other. The first movable terminal includes a first contact portion, a first elastic arm portion, and a first connecting portion, and the first elastic arm portion is located below the first pinhole. The second movable terminal includes a second contact portion, a second elastic arm portion, and a second connecting portion, and the second elastic arm portion is located above the second pinhole.

5. The bidirectional coaxial switch connector according to claim 4, characterized in that: The four outer corners of the lower containing body are connected to the PCB board by welding, and the first connecting portion and the second connecting portion are both connected to the surface of the PCB board.

6. The bidirectional coaxial switch connector according to claim 4, characterized in that: The first movable terminal also includes a first supporting portion, which is integrally provided on the left and right sides of the first elastic arm portion and is inclined obliquely downward along the end portion of the first elastic arm portion, and the free end of the first supporting portion is in contact with the upper surface of the first insulating base; the second movable terminal also includes a second supporting portion, which is integrally provided on the left and right sides of the second elastic arm portion and is inclined obliquely upward along the end portion of the second elastic arm portion, and the free end of the second supporting portion is in contact with the lower surface of the second insulating base.

7. The bidirectional coaxial switch connector according to claim 6, characterized in that: The first insulating base is provided with a first inclined portion, and the first elastic arm portion contacts the first inclined portion after being subjected to force. The second insulating base is provided with a second inclined portion, and the second elastic arm portion contacts the second inclined portion after being subjected to force.

8. The bidirectional coaxial switch connector according to claim 7, wherein: The first inclined surface portion and the second inclined surface portion are parallel to each other.

9. The bidirectional coaxial switch connector according to claim 4, characterized in that: A first through hole is provided between the first connecting portion and the first elastic arm portion of the first movable terminal, and a second through hole is provided between the second connecting portion and the second elastic arm portion of the second movable terminal.

10. The bidirectional coaxial switch connector according to claim 4, characterized in that: The first elastic arm portion and / or the second elastic arm portion is a flat plate structure.

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