Coaxial switch connector

Abstract

The utility model discloses a coaxial switch connector, which is used for being mounted on a PCB (printed circuit board) with an opening and comprises a metal shell, an insulating upper seat, an insulating lower seat and a terminal group, the terminal group is mounted between the insulating upper seat and the insulating lower seat, the metal shell is arranged on the outer side of the insulating upper seat, a first through hole structure is arranged in the center of the upper surface of the metal shell, and a second through hole structure is arranged in the center of the upper surface of the metal shell. Welding parts are arranged at four corners of the upper surface; wherein the first through hole structure is located on the upper side of the PCB, and the welding part is welded on the surface of the PCB. Compared with the prior art, the first through hole structure on the metal shell of the coaxial switch connector is positioned on the upper side of the PCB, and the horizontal welding part is arranged on the upper surface of the metal shell and is welded on the PCB, so that the body of the connector is hidden in the PCB, and the overall height of the connector can be reduced by 0.2-0.3 mm.

Description

Technical Field

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

[0002] As connectors become increasingly miniaturized, existing movable terminals are unable to provide sufficient resilience to minimize the size and shape of coaxial switch connectors. Consequently, stress relaxation typically occurs, leading to excessive stress concentration at the bent position of the spring arm. During testing, the movable terminal experiences downward pressure from the test probe, causing plastic deformation and weakening the resilience of the spring arm. This reduces or even disconnects the contact force between the movable and fixed terminals, increasing the contact resistance of the coaxial switch connector and causing functional issues such as switching anomalies. Furthermore, existing coaxial switch connectors are typically connected to the PCB by welding the lower end of the metal housing to the PCB. This method places the entire connector above the PCB, hindering height reduction. Utility Model Content

[0003] Based on the above technical problems, an embodiment of the present application provides a coaxial switch connector that can greatly reduce the height of the connector.

[0004] In order to achieve the above-mentioned objectives, the technical solution adopted by the present invention is: a coaxial switch connector for being installed on a PCB board with an opening, comprising: a metal shell, an insulating upper seat, an insulating lower seat, and a terminal group, wherein the terminal group is installed between the insulating upper seat and the insulating lower seat, the metal shell is arranged on the outside of the insulating upper seat, a first through-hole structure is provided in the center of the upper surface of the metal shell, and welding portions are provided at the four corners of the upper surface; wherein the first through-hole structure is located on the upper side of the PCB board, and the welding portions are welded to the surface of the PCB board.

[0005] Furthermore, the insulating lower seat and the terminal group are located in an opening of the PCB board, and the insulating upper seat is at least partially located in the opening.

[0006] Furthermore, the welding portion extends horizontally outward from the four corners of the upper surface of the metal shell and is bent 90 degrees in the opposite direction along the width direction of the insulating lower seat.

[0007] Furthermore, a second through-hole structure matching the first through-hole structure is provided on the upper side of the insulating upper seat, and the second through-hole structure is provided inside the first through-hole structure.

[0008] Furthermore, the second through hole structure includes a guide portion and a through hole, and the top surface diameter of the guide portion is larger than the diameter of the through hole.

[0009] Furthermore, the terminal group includes fixed terminals and elastic terminals, and the tails of the fixed terminals and the elastic terminals extend out of the insulating upper seat and extend horizontally, and are on the same horizontal plane as the welding portion of the metal shell.

[0010] Furthermore, the elastic terminal includes a first contact portion in contact with the fixed terminal, an elastic arm portion, and a first connection portion electrically connected to the PCB board; the fixed terminal includes a second contact portion overlapping the first contact portion and a second connection portion electrically connected to the PCB board.

[0011] Furthermore, a pair of buckling parts are provided on opposite sides along the length direction of the metal shell, which are bent from the upper surface of the metal shell toward the side walls of the insulating lower seat, and the buckling parts are surrounded by the two side walls in the length direction of the insulating lower seat.

[0012] The beneficial effect of the present invention is that the first through-hole structure on the metal shell of the coaxial switch connector of the present application is located on the upper side of the PCB board. By arranging a horizontal welding portion on the upper surface of the metal shell and welding it to the PCB board, the body of the connector is hidden in the PCB board, thereby reducing the overall height of the connector by 0.2-0.3 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation structure of the coaxial switch connector in an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the coaxial switch connector in an embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of the coaxial switch connector in an embodiment of the present utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the coaxial switch connector after installation in an embodiment of the present utility model;

[0017] Figure numerals: 10-metal housing, 101-welding portion, 102-first through-hole structure, 103-fastening portion, 20-insulating upper seat, 21-second through-hole structure, 201-through hole, 202-guide portion, 30-insulating lower seat, 40-terminal group, 401-fixed terminal, 402-elastic terminal, 4010-second connecting portion, 4011-second contact portion, 4020-first connecting portion, 4021-elastic arm portion, 4022-first contact portion, 50-PCB board, 501-opening DETAILED DESCRIPTION

[0018] 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.

[0019] The embodiments of the present application provide a coaxial switch connector to solve the problem of excessive connector height in the prior art. It should be noted that, in the present application, the direction of the insulating upper base relative to the insulating lower base is defined as "up," "above," "upper side," "upper end," "top," "top," or "top," while the opposite direction is defined as "down," "below," "lower side," "lower end," "bottom," "bottom end," or "bottom."

[0020] like Figures 1 to 4 As shown, an embodiment of the present application: a coaxial switch connector is used to be installed on a PCB board 50 with an opening 501, comprising: a metal shell 10, an insulating upper seat 20, an insulating lower seat 30, and a terminal group 40, wherein the terminal group 40 is located between the insulating upper seat 20 and the insulating lower seat 30, the metal shell 10 is arranged on the outside of the insulating upper seat 20, and a first through-hole structure 102 is provided in the center of the upper surface of the metal shell 10, and welding portions 101 are provided at its four corners, the first through-hole structure 101 is located on the upper side of the PCB board 50, and the welding portions 101 are welded to the surface of the PCB board 50.

[0021] Reference Figure 4 As can be seen, the insulating lower base 30 and the terminal assembly 40 are located within the opening 501, and the insulating upper base 20 is at least partially located within the opening 501. By positioning the first through-hole structure 102 on the metal housing 10 on the upper side of the PCB 50 and concealing the remainder of the body within the opening 501 of the PCB 50, the overall height of the coaxial switch connector can be reduced.

[0022] like Figure 1 As shown, the soldering portion 101 extends outward from the four corners of the metal housing 10 and is bent 90° in the opposite direction along the width direction of the insulating lower seat 30. The soldering portion 101 is bent 90° in the opposite direction here to increase the soldering area with the PCB board 50 and enhance the connection stability.

[0023] like Figure 2 and Figure 3As shown, a second through-hole structure 21 is provided on the upper side of the insulating upper base 30 to match the first through-hole structure 102. The second through-hole structure 21 is provided inside the first through-hole structure 102 and includes a guide portion 202 and a through-hole 201. The guide portion 202 is a circular, downwardly inclined surface with a through-hole 201 provided at its bottom. The top surface diameter of the guide portion 202 is larger than the diameter of the through-hole 201. The provision of the guide portion 202 helps improve the accuracy of the coaxial switch connector and the coaxial connector during the plugging process, prevents damage to the end of the contact terminal, and thus helps to increase the service life of the coaxial connector.

[0024] Continue to refer to Figure 3 The terminal assembly 40 includes a fixed terminal 401 and a spring terminal 402. The tails of the fixed terminal 401 and the spring terminal 402 extend horizontally beyond the insulating upper base 20, and are on the same horizontal plane as the soldering portion 101 of the metal housing 10. Specifically, the spring terminal 402 includes a first contact portion 4022 that contacts the fixed terminal 401, a spring arm portion 4021, and a first connecting portion 4020 that extends beyond the insulating upper base 20 and electrically connects to the PCB 50. The fixed terminal 401 includes a second contact portion 4011 and a second connecting portion 4010 that extends beyond the insulating upper base 20 and electrically connects to the PCB 50. From the perspective of the overall connector, the spring arm portion 4021 is located below the second through-hole structure 21. The contact terminal of the coaxial connector (not shown in the figure) passes through the first through-hole structure 102 and the second through-hole structure 21 in sequence, and then electrically contacts the elastic arm portion 4021 of the elastic terminal 402 in the terminal group 40. At the same time, the contact terminal of the coaxial connector (not shown in the figure) applies a downward force to the elastic arm portion 4021 so that the elastic arm portion 4021 is disconnected from the fixed terminal 401.

[0025] In this embodiment, the coaxial switch connector can obtain a sufficiently small size and shape, and there is stable and reliable contact and connection between the contact terminal of the coaxial connector and the coaxial switch connector, which can ensure the long-term use of the elastic terminal 402 and avoid plastic deformation during use. The elastic terminal 402 has sufficient elastic recovery force to prevent switch failure.

[0026] like Figure 2 As shown, a pair of snap-fitting portions 103 are provided on opposite sides along the length direction of the metal shell 10. The snap-fitting portions 103 are bent from the upper surface of the metal shell 10 toward the side walls of the insulating lower base 30. The snap-fitting portions 103 surround the two side walls along the length direction of the insulating lower base 30. The provision of the snap-fitting portions 103 can strengthen the connection strength between the metal shell 10 and the insulating lower base 30 inside.

[0027] 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.

[0028] 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 coaxial switch connector for mounting on a PCB having an opening, comprising: A metal shell, an insulating upper seat, an insulating lower seat, and a terminal group, wherein the terminal group is installed between the insulating upper seat and the insulating lower seat, and the metal shell is arranged on the outside of the insulating upper seat, characterized in that a first through-hole structure is provided in the center of the upper surface of the metal shell, and welding parts are provided at the four corners of the upper surface; wherein the first through-hole structure is located on the upper side of the PCB board, and the welding parts are welded to the surface of the PCB board.

2. The coaxial switch connector according to claim 1, wherein: The insulating lower seat and the terminal group are located in an opening of the PCB board, and the insulating upper seat is at least partially located in the opening.

3. The coaxial switch connector according to claim 1, wherein: The welding portion extends horizontally outward from the four corners of the upper surface of the metal shell and is bent 90 degrees in the opposite direction along the width direction of the insulating lower seat.

4. The coaxial switch connector according to claim 1, wherein: A second through-hole structure matching the first through-hole structure is provided on the upper side of the insulating upper seat, and the second through-hole structure is provided inside the first through-hole structure.

5. The coaxial switch connector according to claim 4, wherein: The second through hole structure includes a guide portion and a through hole, and a top surface diameter of the guide portion is larger than a diameter of the through hole.

6. The coaxial switch connector according to claim 1, wherein: The terminal group includes a fixed terminal and an elastic terminal. The tails of the fixed terminal and the elastic terminal extend out of the insulating upper seat and extend horizontally, and are on the same horizontal plane as the welding portion of the metal shell.

7. The coaxial switch connector according to claim 6, wherein: The elastic terminal includes a first contact portion in contact with the fixed terminal, an elastic arm portion, and a first connection portion electrically connected to the PCB board; the fixed terminal includes a second contact portion overlapping the first contact portion and a second connection portion electrically connected to the PCB board.

8. The coaxial switch connector according to claim 1, wherein: A pair of buckling parts are provided on opposite sides along the length direction of the metal shell, which are bent from the upper surface of the metal shell toward the side walls of the insulating lower seat. The buckling parts are surrounded by the two side walls in the length direction of the insulating lower seat.

Images