Coaxial Connectors

Abstract

A coaxial connector comprises an insulating fixing seat, a switch switching device fixed in the insulating fixing seat and a metal shell covered on the outside of the insulating fixing seat, wherein the insulating fixing seat has an opening portion and a hollow portion for accommodating a plug pin inserted through the opening portion, and the switch switching device comprises at least a fixed terminal and a movable terminal that cooperate with each other, wherein the fixed terminal forms a fixed terminal contact portion, and the movable terminal is provided with an elastic arm portion, wherein the elastic arm portion forms at least two movable terminal contact portions, wherein the elastic arm portion can be elastically deformed in a direction orthogonal to the plug-in and pull-out direction of the plug pin, and the at least two movable terminal contact portions are elastically in contact with the fixed terminal contact portion, and the elastic arm portion is also formed with a trigger portion, wherein the trigger portion protrudes into the hollow portion, and along the plug-in and pull-out direction of the plug pin, the trigger portion at least partially overlaps with the opening portion along the plug-in and pull-out direction of the plug pin, and has a simple structure and stable contact.

Description

Technical Field

[0001] The present application relates to a coaxial connector. Background Art

[0002] In the field of communication and electronics, since most RF modules are fine integrated circuits that require very high precision, and even have tens of thousands of components, and the spatial operating range is small, when a problem occurs in the whole machine, it is impossible to detect which specific module or unit caused the problem. Therefore, a switch connector is usually arranged to detect the quality of the antenna RF transceiver circuit and the performance of the RF module related components.

[0003] The function of the connector with a switch is to provide a signal transmission circuit. When pushed by the plug pin, the original signal transmission circuit is disconnected and switched to a new signal transmission circuit established with the plug pin, thereby completing the conversion process of switching the signal from one transmission circuit to another, and ensuring as much as possible that the conversion process does not affect the transmission quality of the signal. In this way, especially in complex deteriorating environments, its reliability requirements are very high.

[0004] To achieve the above functions, the coaxial connector with switch usually includes a hollow insulating medium, a switch mechanism and an external conductor. The moving and static terminals of the switch mechanism are arranged in the hollow part of the insulating medium; the external conductor is arranged on the outside of the insulating medium and coaxially surrounds the switch mechanism. The coaxial connector with switch receives the plug pin of the other connector through the hollow part of the insulating medium, so that the moving terminal is electrically connected to the plug pin, and the electrical connection between the moving and static terminals is disconnected at the same time.

[0005] However, the existing switch connectors also have the following problems: the electrical connection between the switch connector and the plug pin is unstable or unreliable in a deteriorating environment, making the switch contact performance of the fixed terminal, movable terminal and plug pin unstable, which is particularly not conducive to application in vibration and impact environments.

[0006] Therefore, it is necessary to provide a new coaxial connector to overcome the above-mentioned defects. Summary of the invention

[0007] The purpose of the present application is to provide a coaxial connector having the advantages of simple structure, easy manufacturing and stable contact.

[0008] The purpose of this application is achieved through the following technical solutions:

[0009] A coaxial connector comprises an insulating fixing seat, a switch switching device fixed in the insulating fixing seat and a metal shell covered on the outside of the insulating fixing seat, wherein the insulating fixing seat has an opening portion and a hollow portion for accommodating a plug pin inserted through the opening portion, and the switch switching device comprises at least a fixed terminal and a movable terminal that cooperate with each other, wherein the fixed terminal forms a fixed terminal contact portion, and the movable terminal is provided with an elastic arm portion, wherein the elastic arm portion forms at least two movable terminal contact portions, wherein the elastic arm portion can be elastically deformed in a direction orthogonal to the plug-in and pull-out direction of the plug pin, wherein the at least two movable terminal contact portions are elastically in contact with the fixed terminal contact portion, and wherein the elastic arm portion is further formed with a trigger portion, wherein the trigger portion protrudes into the hollow portion, and along the plug-in and pull-out direction of the plug pin, the trigger portion at least partially overlaps with the opening portion along the plug-in and pull-out direction of the plug pin.

[0010] Furthermore, one end of the fixed terminal close to the opening portion is extended to form two fixed terminal contact portions arranged at intervals, and the fixed terminal contact portions leak out into the hollow portion.

[0011] Furthermore, the at least two movable terminal contact portions are arranged at intervals, and each of the movable terminal contact portions is bent toward the side where the fixed terminal contact portion is located.

[0012] Furthermore, the trigger portion is located at a position of the elastic arm portion close to the opening portion, and the trigger portion is connected to the at least two movable terminal contact portions.

[0013] Furthermore, along the insertion direction of the plug pin, the trigger portion is sequentially formed with an inclined portion and a flat portion, and the inclined portion at least partially overlaps with the opening portion along the insertion and extraction direction of the plug pin.

[0014] Furthermore, an end portion of the inclined portion close to the opening portion does not overlap with the opening portion along the insertion and extraction direction of the insertion and extraction pin.

[0015] Furthermore, the hollow portion is connected to the opening portion, and the hollow portion passes through the front end of the insulating fixing seat along the insertion direction of the plug pin. The hollow portion includes a front space close to the opening portion and a rear space far from the opening portion. The cross-sectional area of ​​the front space along the plug-in and pull-out direction perpendicular to the plug-in and pull-out pin is smaller than the cross-sectional area of ​​the rear space along the plug-in and pull-out direction perpendicular to the plug-in and pull-out pin. The fixed terminal includes a functional wall and a docking portion extending from one end of the functional wall far from the opening portion to the outside of the insulating fixing seat, and the fixed terminal contact portion is formed by an extension of a section of the functional wall close to the opening portion.

[0016] Furthermore, the functional wall includes a connected front arm and a rear arm, wherein the front arm is located near the opening portion, and the rear arm is located far away from the opening portion, and both sides of the rear arm extend to form a fixed portion fixed to the insulating fixing seat.

[0017] Furthermore, the front arm is attached to the inner wall of the front space, and both side surfaces of the rear arm leak out into the rear space.

[0018] Furthermore, the elastic arm portion includes a connected front section and a rear section, the front section is located near the opening portion, and the rear section is located far away from the opening portion, and both sides of the rear section extend to form a fixed portion fixed to the insulating fixing seat, the front section is in the shape of a cantilever beam or a simply supported beam, and both side surfaces of the rear section leak into the rear section space.

[0019] Furthermore, the insulating fixing seat includes a cylindrical barrel and a base connected to the barrel, the outer peripheral surface of the end of the barrel away from one end of the base forms a guiding bevel, the outer peripheral surface of the barrel behind the guiding bevel protrudes to form an interference portion, the interference portion makes the outer peripheral surface of the barrel form a non-smooth surface, the interference portion extends along the entire length of the plugging and unplugging direction of the plug pin except the guiding bevel, the metal shell includes a cylindrical front end shell covering the outer periphery of the barrel and a rear end shell covering the outer periphery of the base, and the rear end shell is formed by two petals that are buckled together.

[0020] Compared with the prior art, the present application has the following beneficial effects: it has the advantages of simple structure, easy manufacturing and stable contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the coaxial connector of the present application;

[0022] Figure 2 yes Figure 1 The coaxial connector is shown as a three-dimensional schematic diagram from another angle;

[0023] Figure 3 yes Figure 1 The partial exploded perspective view of the coaxial connector shown mainly shows the perspective schematic diagram when the metal shell and the insulating fixing seat are separated;

[0024] Figure 4 yes Figure 1 The three-dimensional exploded view of the coaxial connector shown mainly shows the three-dimensional schematic diagram of the metal shell, the insulating fixing seat and the switch switching device when they are separated;

[0025] Figure 5 It is Figure 1 Sectional view along line AA;

[0026] Figure 6 is a rear view of the coaxial connector of the present application;

[0027] Figure 7It is a rear view of the coaxial connector of the present application, which further shows the state diagram after the switch switching device is separated from the insulating fixing seat. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the application can be combined with each other. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] In the description of the application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the application can be understood according to specific circumstances.

[0030] In the description of the application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0031] Please refer to Figures 1 to 7 As shown, the present application discloses a coaxial connector, comprising an insulating fixing seat 1, a switch switching device 2 fixed in the insulating fixing seat 1, and a metal shell 3 coated on the outside of the insulating fixing seat 1. The insulating fixing seat 1 has an opening portion 11 and a hollow portion 12 for accommodating a plug pin (not shown) inserted through the opening portion 11. The switch switching device 2 at least includes a fixed terminal 21 and a movable terminal 22 that cooperate with each other. The fixed terminal 21 forms a fixed terminal contact portion 210. The movable terminal 22 is provided with an elastic arm portion 221. The elastic arm portion 221 is formed with two movable terminal contact portions 2211. The elastic arm portion 221 can be elastically deformed in a direction orthogonal to the plug-in and pull-out direction of the plug pin. The at least two movable terminal contact portions 2211 are in elastic contact with the fixed terminal contact portion 210. The elastic arm portion 221 is further formed with a trigger portion 2212 , which protrudes into the hollow portion and at least partially overlaps with the opening portion 11 along the plugging and unplugging direction of the plugging and unplugging pin.

[0032] Please refer to Figure 4 class Figure 5As shown, one end of the fixed terminal 21 near the opening portion 11 extends to form two fixed terminal contact portions 210 arranged at intervals, and the fixed terminal contact portion 210 leaks into the hollow portion 12. The two movable terminal contact portions 2211 are arranged at intervals, and each movable terminal contact portion 2211 is bent toward the side where the fixed terminal contact portion 210 is located. The cross-section of the movable terminal contact portion 2211 is roughly V-shaped. In the present application, the movable terminal contact portion 2211 can undergo elastic deformation during the entire actuation process, and can have a certain amount of contraction / extension deformation along the plug-in and pull-out direction of the plug-in pin. During the actual actuation process, as the plug-in and pull-out pins are inserted and pulled out, the contact point of the movable terminal contact portion 2211 can slide on the surface of the fixed terminal contact portion 210, achieving a scraping and dust removal effect, which is beneficial to the contact stability between the fixed terminal 21 and the movable terminal 22.

[0033] Please refer to Figure 4 class Figure 5 As shown, the trigger portion 2212 is located at a position of the elastic arm portion 221 close to the opening portion 11, and the trigger portion 2212 connects the two movable terminal contact portions 2211. Along the insertion direction of the plug-in pin, the trigger portion 2212 is sequentially formed with an inclined portion 223 and a flat portion 224, and the inclined portion 223 at least partially overlaps with the opening portion 11 along the plug-in direction of the plug-in pin. The end position of the inclined portion 223 close to the opening portion 11 does not overlap with the opening portion 11 along the plug-in direction of the plug-in pin.

[0034] Here is a brief description of the operating principle of the coaxial connector of the present application when docking with the plug pin: in the initial state (when the plug pin is not inserted into the opening 11), the movable terminal contact portion 2211 of the movable terminal 22 is in contact with the fixed terminal contact portion 210 of the fixed terminal 21; when the plug pin is inserted into the hollow portion 12 through the opening 11, the plug pin first contacts the inclined portion 223 of the trigger portion 2212; as the plug pin is further inserted, the plug pin will form a thrust on the inclined portion 223 in the direction of insertion of the plug pin, and at the same time, a thrust perpendicular to the direction of insertion of the plug pin will be formed on the inclined portion 223; the inclined portion 223 will form a movement along the direction of insertion of the plug pin, and at the same time, a movement perpendicular to the direction of insertion of the plug pin. As the plug pin is continuously inserted, the movable terminal contact portion 2211 is disconnected from the fixed terminal contact portion 210. When the plug pin is pulled out, the movable terminal 22 and the fixed terminal 21 resume the contact state.

[0035] Please refer to Figure 5As shown, the hollow portion 12 is connected to the opening portion 11, and the hollow portion 12 passes through the front end of the insulating fixing seat 1 along the insertion direction of the plug-in pin. The hollow portion 12 includes a front space 121 close to the opening portion 11 and a rear space 122 far from the opening portion 11. The cross-sectional area of ​​the front space 121 along the plug-in and pull-out direction perpendicular to the plug-in and pull-out direction of the plug-in and pull-out pin is smaller than the cross-sectional area of ​​the rear space 122 along the plug-in and pull-out direction perpendicular to the plug-in and pull-out direction of the plug-in and pull-out pin. The fixed terminal 21 includes a functional wall 211 and a docking portion 212 extending from one end of the functional wall 211 away from the opening portion 11 to the outside of the insulating fixing seat 1, and the docking portion 212 is used for docking and fixing with a docking circuit board (not shown). The fixed terminal contact portion 210 is formed by extending a section of the functional wall 211 close to the opening portion 11.

[0036] Please refer to Figure 4 and Figure 5 As shown, the functional wall 211 includes a connected front arm 2111 and a rear arm 2112, wherein the front arm 2111 is located near the opening 11, and the rear arm 2112 is located far from the opening 11, and both sides of the rear arm 2112 extend to form a fixing portion 2113 fixed to the insulating fixing seat 1. The front arm 2111 is attached to the inner wall of the front space 121, and both side surfaces of the rear arm 2112 leak into the rear space 122. In the present application, it is ensured that a large area of ​​the functional wall 211 is in contact with the air, which can ensure the transmission of signals, especially the transmission of high-frequency signals.

[0037] Please refer to Figure 4 and Figure 5 As shown, the elastic arm 221 includes a connected front section (not numbered) and a rear section (not numbered), the front section is located near the opening 11, the rear section is located far from the opening 11, and both sides of the rear section extend to form a fixing portion 2213 fixed to the insulating fixing seat 1, the front section is in a cantilever beam shape or a simply supported beam shape (the embodiment in this application is a cantilever beam shape), and both side surfaces of the rear section leak into the rear section space 122. It can also ensure that a large area of ​​the functional wall 211 is in contact with the air, which can ensure the transmission of signals, especially the transmission of high-frequency signals.

[0038] Please refer to Figures 1 to 6As shown, the insulating fixing seat 1 includes a cylindrical barrel 11 and a base 12 connected to the barrel 11, the outer peripheral surface of the end of the barrel 11 away from one end of the base forms a guiding inclined surface 111, and the outer peripheral surface of the barrel 11 behind the guiding inclined surface 111 is protruded to form an interference portion 112, and the interference portion 112 makes the outer peripheral surface of the barrel 11 form a non-smooth surface, and the interference portion 112 extends along the entire length of the plugging and unplugging direction of the plug pin except the guiding inclined surface 111. The metal shell 3 includes a cylindrical front end shell 31 covering the outer periphery of the barrel 11 and a rear end shell 32 covering the outer periphery of the base 12, and the rear end shell 32 is formed by two petals being buckled together.

[0039] The coaxial connector of the present application has the advantages of simple structure, easy manufacturing and stable contact.

[0040] The above descriptions are only some embodiments of the present application, not all embodiments. Any equivalent changes made to the technical solution of the present application by ordinary technicians in this field after reading the specification of the present application are covered by the claims of the present application.

Claims

1. A coaxial connector, characterized in that: The invention comprises an insulating fixing seat, a switch switching device fixed in the insulating fixing seat, and a metal shell covered on the outer side of the insulating fixing seat, wherein the insulating fixing seat has an opening portion and a hollow portion for accommodating a plug pin inserted through the opening portion, and the switch switching device at least comprises a fixed terminal and a movable terminal that cooperate with each other, wherein the fixed terminal forms a fixed terminal contact portion, and the movable terminal is provided with an elastic arm portion, wherein the elastic arm portion penetrates along the plate thickness direction to form a through hole, and the parts of the elastic arm portion located on both sides of the through hole are bent along the plate thickness direction toward the side where the fixed terminal contact portion is located to form two movable terminal contact portions; The elastic arm portion is capable of elastically deforming in a direction orthogonal to the plugging and unplugging direction of the plugging and unplugging pin, the two movable terminal contact portions are in elastic contact with the fixed terminal contact portion, and the elastic arm portion is further formed with a trigger portion, the trigger portion is located in the hollow portion and is closer to the opening portion than the movable terminal contact portion along the plugging and unplugging direction; Along the plugging and unplugging direction of the plugging and unplugging pin, the projection of the trigger portion at least partially overlaps with the opening portion; When the plug pin is inserted into or pulled out of the hollow portion, the movable terminal contact portion itself can be elastically deformed and can shrink or stretch along the plugging and pulling direction of the plug pin.

2. The coaxial connector according to claim 1, wherein: One end of the fixed terminal close to the opening portion is extended to form two fixed terminal contact portions arranged at intervals, and the fixed terminal contact portions leak out into the hollow portion.

3. The coaxial connector according to claim 1, wherein: The movable terminal contact portion has a V-shaped cross section.

4. The coaxial connector according to claim 1, wherein: The trigger portion is located at a position of the elastic arm portion close to the opening portion, and the trigger portion connects the free ends of the two movable terminal contact portions.

5. The coaxial connector according to claim 4, characterized in that: Along the insertion direction of the plug pin, the trigger portion is sequentially formed with an inclined portion and a flat portion, and a projection of the inclined portion along the plugging and extraction direction of the plug pin at least partially overlaps with the opening portion.

6. The coaxial connector according to claim 5, characterized in that: A projection of an end position of the inclined portion close to the opening portion along the insertion and extraction direction of the plugging and extraction pin does not overlap with the opening portion.

7. The coaxial connector according to claim 1, wherein: The hollow portion is connected to the opening portion, and the hollow portion passes through the front end of the insulating fixing seat along the insertion direction of the plug pin. The hollow portion includes a front space close to the opening portion and a rear space far from the opening portion. The cross-sectional area of ​​the front space along the plug-in and pull-out direction perpendicular to the plug-in and pull-out pin is smaller than the cross-sectional area of ​​the rear space along the plug-in and pull-out direction perpendicular to the plug-in and pull-out pin. The fixed terminal includes a functional wall and a docking portion extending from one end of the functional wall far from the opening portion to the outside of the insulating fixing seat, and the fixed terminal contact portion is formed by extending a section of the functional wall close to the opening portion.

8. The coaxial connector according to claim 7, wherein: The functional wall includes a front arm and a rear arm connected to each other, wherein the front arm is located near the opening portion, and the rear arm is located far away from the opening portion, and both sides of the rear arm extend to form a fixing portion fixed to the insulating fixing seat.

9. The coaxial connector according to claim 8, wherein: The front section arm is attached to the inner wall of the front section space, and both side surfaces of the rear section arm leak out into the rear section space.

10. The coaxial connector according to claim 7, wherein: The elastic arm portion includes a connected front section and a rear section, wherein the front section is located near the opening portion, and the rear section is located far away from the opening portion, and both sides of the rear section extend to form a fixed portion fixed to the insulating fixing seat, the front section is in the shape of a cantilever beam or a simply supported beam, and both side surfaces of the rear section leak out into the rear section space.

11. The coaxial connector according to claim 1, wherein: The insulating fixing seat includes a cylindrical barrel and a base connected to the barrel, the outer peripheral surface of the end of the barrel away from one end of the base forms a guiding inclined surface, the outer peripheral surface of the barrel behind the guiding inclined surface protrudes to form an interference portion, the interference portion makes the outer peripheral surface of the barrel form a non-smooth surface, and the interference portion extends along the entire length of the plugging and unplugging direction of the plug pin except the guiding inclined surface. The metal shell includes a cylindrical front end shell covering the outer periphery of the barrel and a rear end shell covering the outer periphery of the base, and the rear end shell is formed by two petals being buckled together.

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