Coaxial connector

Abstract

The present application discloses a coaxial connector for fixing to a circuit substrate, which has a docking hole for inserting an external probe. The coaxial connector includes a body, a shell module fixed to the body, and a fixed terminal and a movable terminal assembled in the body and / or the shell module. The fixed terminal includes a contact portion and a docking pin. The movable terminal includes a cantilevered base, a docking pin formed by bending and extending from one longitudinal end of the base, and a contact portion formed by extending from the other longitudinal end of the base toward the fixed terminal. The movable terminal contact portion is used to dock with the fixed terminal contact portion. The movable terminal base is at least partially exposed from the docking hole. The movable terminal base can be elastically deformed in the direction of plugging and unplugging the external probe. The movable terminal also includes two support arms extending from the two side edges of the base to both sides. The portion of the base between the two support arms and the two support arms together form an arc-shaped structure. The extended ends of the two support arms are abutted against the shell module.

Description

Technical Field

[0001] The present application relates to a coaxial connector, and in particular to a coaxial connector having a fixed terminal and a movable terminal that are in contact with or separated from each other. Background Art

[0002] In today's increasingly miniaturized electronic information field, various devices such as mobile phones, tablet devices, and wireless local area network devices often require the switching function of a coaxial connector to achieve free switching between internal and external antennas. In addition, this coaxial connector is often installed in a circuit substrate to connect an external test head to the circuit substrate for testing the high-frequency characteristics of the circuit substrate. As the appearance of electronic information equipment becomes smaller and smaller, the demand for this type of coaxial connector is becoming more and more widespread. As we all know, the smaller the appearance, the more difficult it is to achieve the switching function. Therefore, the key technology of this type of coaxial connector lies in how to solve the problems of switch failure and unreliable function in a miniaturized structure.

[0003] Traditional coaxial connectors generally consist of an insulating body, a movable terminal fixed within the body, and a fixed terminal. The movable terminal elastically deforms to contact or disconnect with the fixed terminal, forming an electrical switch. During this process, contact or disconnection with the fixed terminal is entirely dependent on the movable terminal's own elastic deformation. Therefore, the movable terminal must not only fulfill the task of electrically contacting the fixed terminal, but also provide the restoring force required to restore contact after disconnection. As the structure becomes smaller, ensuring both the contact stability of the movable terminal and the durability of the movable terminal's elastic deformation has become a major challenge in the industry.

[0004] In view of this, the present application proposes a new coaxial connector. Summary of the Invention

[0005] In response to the deficiencies of the prior art, the present application aims to provide a coaxial connector that, while ensuring sufficiently miniaturized dimensions, can ensure that the contact and disconnection performance of the movable terminal with the fixed terminal remains stable and reliable after multiple operations.

[0006] This application is implemented through the following technical solutions:

[0007] A coaxial connector having a docking hole for inserting an external probe, wherein the coaxial connector is used to be fixed to a circuit substrate.

[0008] The coaxial connector includes a body, a housing module fixed to the body, and fixed terminals and movable terminals correspondingly combined in the body and / or the housing module.

[0009] The body and the housing module jointly define a displacement space, the movable terminal is at least partially located in the displacement space, and the displacement space is defined by an upper inner wall surface away from the circuit substrate along the insertion and removal direction of the external probe.

[0010] The fixed terminal includes a fixed terminal contact portion and a fixed terminal docking pin,

[0011] The movable terminal includes a cantilevered movable terminal base, a movable terminal docking pin formed by bending and extending from one longitudinal end of the movable terminal base, and a movable terminal contact portion formed by extending from the other longitudinal end of the movable terminal base toward the fixed terminal.

[0012] The movable terminal contact portion is used to dock with the fixed terminal contact portion.

[0013] The movable terminal base is at least partially exposed from the docking hole, and the movable terminal base can be elastically deformed in the insertion and removal direction of the external probe.

[0014] The movable terminal further includes two support arms extending from both longitudinal side edges of the movable terminal base to both sides, and the two support arms are pressed against the upper inner wall surface along the pulling-out direction of the external probe.

[0015] Furthermore, the movable terminal base is located between the two support arms and the portion for connecting the two support arms together with the two support arms form an arc-shaped structure protruding toward the circuit substrate, and the extended ends of the two support arms are abutted against the upper inner wall surface.

[0016] Furthermore, a portion of the movable terminal base located between the two support arms and used to connect the two support arms is exposed from the docking hole for abutment by the external probe.

[0017] Furthermore, the main body includes two limiting columns protruding upward from the bottom wall of the displacement space, and the two limiting columns are located on both sides of the movable terminal base along the longitudinal direction of the movable terminal base.

[0018] Furthermore, the main body includes a protrusion protruding upward from the bottom wall of the displacement space, and the base of the movable terminal is located between the two support arms, and the part for connecting the two support arms is suspended above the protrusion.

[0019] Furthermore, the main body has a accommodating space, which includes a first accommodating space and two second accommodating spaces located on both sides of the first accommodating space along the longitudinal direction of the base of the movable terminal. The two second accommodating spaces are connected to the first accommodating space, and the extended ends of the two support arms are respectively located in the two second accommodating spaces.

[0020] Furthermore, the movable terminal contact portion is located above the fixed terminal contact portion and the two are in contact with each other.

[0021] Furthermore, the main body is provided with a limit block, and the movable terminal also includes a supporting portion connected to the movable terminal contact portion. After the external probe acts on the base of the movable terminal, the supporting portion abuts against the limit block and moves along the limit block, and the movable terminal contact portion is separated from the fixed terminal contact portion.

[0022] Furthermore, the limiting block is provided with a guide slope, and the abutting portion moves along the guide slope.

[0023] Furthermore, the main body includes a main body portion, two limiting portions formed by extending upward from opposite sides of the main body portion, and two mounting portions formed by extending upward from other opposite sides of the main body portion. The main body portion, the two limiting portions and the two mounting portions together form an accommodating space. The movable terminal base, the movable terminal contact portion and the two support arms are all accommodated in the accommodating space. The two mounting portions include a first mounting portion and a second mounting portion. The first mounting portion is provided with a first mounting space, and the fixed terminal docking pin is located in the first mounting space. The second mounting portion is provided with a second mounting space, and the movable terminal docking pin is located in the second mounting space.

[0024] Compared with the prior art, the movable terminal of the coaxial connector in the present application includes an arc-shaped simply supported structure formed by the part of the movable terminal base in the middle of the two support arms and the two support arms. After the shell module is assembled to the main body, the extended ends of the two support arms are both abutted against the insulating module. Since the arc-shaped simply supported structure generates a supporting force on the insulating module, the insulating module generates a reaction force on the movable terminal, thereby ensuring that the movable terminal contact portion and the fixed terminal contact portion are in stable contact; in addition, the movable terminal includes an abutting portion connected to the movable terminal contact portion. When the external probe acts on the movable terminal base, the movable terminal base drives the movable terminal contact portion to move, and the abutting portion abuts against the limit block in the accommodating cavity of the main body and moves along the limit block, thereby separating the movable terminal contact portion from the fixed terminal contact portion. With this design, the elastic displacement of the movable terminal has better durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 1 is a schematic structural diagram of a coaxial connector with an external probe according to a first embodiment of the present application;

[0026] Figure 2 yes Figure 1 A schematic structural diagram of a coaxial connector with an external probe from another perspective is shown;

[0027] Figure 3 yes Figure 2 An exploded perspective view of the coaxial connector with an external probe is shown;

[0028] Figure 4 yes Figure 3 A further exploded perspective view of the coaxial connector with an external probe is shown;

[0029] Figure 5 yes Figure 4 Schematic diagram of the portion of the coaxial connector where the external probe does not act;

[0030] Figure 6 yes Figure 5 3D exploded view of the fixed terminal and the body;

[0031] Figure 7-1 yes Figure 1 The cross-sectional view along the AA direction, specifically, shows a cross-sectional view before the external probe is inserted;

[0032] Figure 7-2 yes Figure 2 Cross-sectional view along the BB direction;

[0033] Figure 8 yes Figure 4 , a schematic diagram of part of the structure after the external probe acts on the coaxial connector;

[0034] Figure 9 yes Figure 8 Enlarged view of the circled part;

[0035] Figure 10 yes Figure 1 The cross-sectional view along the AA direction, specifically, shows a cross-sectional view after the external probe is not inserted;

[0036] Figure 11 This is a perspective schematic diagram of a second embodiment of the coaxial connector body, fixed terminals, and movable terminals of the present application, primarily showing a schematic diagram of the state before an external probe is inserted, with the housing module removed;

[0037] Figure 12 yes Figure 11 A three-dimensional schematic diagram of the body and fixed terminals;

[0038] Figure 13 yes Figure 11 The cross-sectional view along the CC direction further shows the state diagram after the shell module and the body are combined;

[0039] Figure 14 yes Figure 11The cross-sectional view along the CC direction further shows the state diagram after the shell module is combined with the body, and the state diagram after the external probe is inserted;

[0040] Figure 15 This is a perspective schematic diagram of a third embodiment of the coaxial connector body, fixed terminals, and movable terminals of the present application, primarily showing a schematic diagram of the state before an external probe is inserted, with the housing module removed;

[0041] Figure 16 yes Figure 15 Diagram of the combined state of the middle body and fixed terminals;

[0042] Figure 17 yes Figure 16 Exploded state diagram of the middle body and fixed terminals;

[0043] Figure 18 yes Figure 15 The cross-sectional view along the DD direction further shows the state diagram after the shell module and the body are combined;

[0044] Figure 19 yes Figure 15 The cross-sectional view along the DD direction further shows the state diagram after the shell module is combined with the body, and also shows the state diagram after the external probe is inserted. DETAILED DESCRIPTION

[0045] The present application is described in detail below with reference to the accompanying drawings and implementation methods.

[0046] See also Figures 1 to 10 , is a coaxial connector 100 with an external probe 15 as described in the first embodiment of the present application, which is used to be fixed to a circuit substrate (not shown), and the coaxial connector 100 includes a main body 11, a shell module 12 stacked and fixed with the main body 11, and a fixed terminal 13 and a movable terminal 14 fixed between the main body 11 and the shell module 12. The fixed terminal 13 and the movable terminal 14 are respectively assembled at positions close to both sides of the main body 11. The movable terminal 14 is elastically docked with the fixed terminal 13. The coaxial connector 100 can be used to be correspondingly welded to the internal circuit substrate of various electronic devices, and the free conversion between the internal antenna and the external antenna can be realized through the switching function between the movable terminal 14 and the fixed terminal 13. In addition, it can be used to connect an external test head to the circuit substrate for testing the high-frequency characteristics of the circuit substrate.

[0047] In the present application, the body 11 and the housing module 12 jointly define a displacement space 101, and the movable terminal 14 is at least partially located in the displacement space 101. The displacement space 101 is defined by an upper inner wall surface 1011 (a portion of which is located away from the circuit substrate along the insertion and removal direction of the external probe) Figure 7-2 As shown), the two support arms 144 are supported against the upper inner wall surface 1011 along the pulling-out direction of the external probe.

[0048] The body 11 is made of an insulating material and includes a main body portion 111 extending longitudinally, two stoppers 112 extending upwardly from opposite sides of the main body portion 111, and two mounting portions 113 extending upwardly from other opposite sides of the main body portion 111. Specifically, the two mounting portions 113 are located on opposite longitudinal sides of the main body portion 111, and the two stoppers 112 are located on opposite lateral sides of the main body portion 111 perpendicular to the longitudinal direction. The main body portion 111, the two stoppers 112, and the two mounting portions 113 collectively form a receiving space 110. The receiving space 110 includes a first receiving space 1101 in the shape of a rectangular parallelepiped and two second receiving spaces 1102 located on either side of the first receiving space 1101. The two second receiving spaces 1102 are symmetrically arranged in the transverse direction. The first receiving space 1101 is connected to the two second receiving spaces 1102, and the sidewalls of the second receiving spaces 1102 are defined by the stoppers 112. The body 11 also has a protrusion 114 extending upward from the bottom wall of the first accommodating space 1101. The protrusion 114 is located in the middle of the first accommodating space 1101 and is laterally aligned with the two second accommodating spaces 1102. The body 11 also has two stoppers 115 extending upward from the bottom wall of the first accommodating space 1101. The two stoppers 115 are located on either side of the central longitudinal axis of the first accommodating space 1101 and are laterally symmetrically arranged. The body 11 also has a receiving cavity 1103 recessed downward from the bottom wall of the first accommodating space 1101. In the longitudinal direction, the receiving cavity 1103 and the two stoppers 115 are located on either side of the protrusion 114. A stopper 1104 is located within the receiving cavity 1103. In the transverse direction, the stopper 1104 is located in the middle of the receiving cavity 1103. In the longitudinal direction, the stopper 1104 is located near the protrusion 114 and connected to the side walls of the receiving cavity 1103. The two mounting portions 113 include a first mounting portion 116 and a second mounting portion 117. The first mounting portion 116 defines a first mounting space 118, and the second mounting portion 117 defines a second mounting space 119. A receiving cavity 1103 is provided near the first mounting portion 116. A portion of the fixed terminal 13 is located within the receiving cavity 1103, while another portion of the fixed terminal 13 is located within the first mounting space 118 and its distal end is connected to the circuit substrate. A portion of the movable terminal 14 is located within the first and second receiving spaces 1101 and 1102, while another portion of the movable terminal 14 is located within the second mounting space 119 and its distal end is connected to the circuit substrate.

[0049] The housing module 12 includes an outer conductor 121 made of a conductive material and an insulating module 122 made of an insulating material and fixed to the outer conductor 121. The outer conductor 121 comprises a flat outer conductor substrate 1211, a cylindrical portion 1212 extending upward from the center of the outer conductor substrate 1211 and extending vertically through the outer conductor substrate 1211, and retaining portions 1213 formed by bending opposite edges of the outer conductor substrate 1211. In this embodiment, two retaining portions 1213 are formed on opposite edges of the outer conductor substrate 1211. The insulating module 122 comprises an insulating base 1221 fixed to the lower surface of the outer conductor substrate 1211 and an insulating cylindrical portion 1222 fixed and accommodated within the cylindrical portion 1212. A docking hole 1220 is formed in the middle of the insulating module 122, extending vertically through the insulating barrel 1222 and the insulating base 1221. This docking hole 1220 accommodates the insertion of the external probe 15. Once inserted into the docking hole 1220, one end of the external probe 15 abuts against the movable terminal 14. The movable terminal 14 is pressed by the external probe 15, elastically deforming and separating from the fixed terminal 13. The insulating module 122 is injection molded to securely fit the outer conductor 121 and form the housing module 12. The housing module 12 is stacked and secured to the body 11 from top to bottom. The insulating base 1221 is accommodated within the housing space 110 of the body 11 and positioned above the movable terminal 14 and the fixed terminal 13. The retaining portion 1213 of the outer conductor 121 passes through the clearances on either side of the protrusion 1120 of the retaining portion 112 and latches onto the lower surface of the body 111.

[0050] The fixed terminal 13 is formed by stamping and bending a metal plate. It includes a flat fixed terminal contact portion 131 and a fixed terminal docking pin 132 formed by bending and extending one end of the fixed terminal contact portion 131 downward. The fixed terminal contact portion 131 is used to dock with the movable terminal 14, and the fixed terminal docking pin 132 is used to dock with the circuit board. The fixed terminal contact portion 131 is generally rectangular, and one of the side walls 16 of the rectangular frame has a recessed portion 160 located in the middle of the side wall 16. After the fixed terminal 13 is assembled with the body 11, the fixed terminal contact portion 131 is located within the receiving cavity 1103. The side walls of the fixed terminal contact portion 131 abut against the side walls of the receiving cavity 1103. The stopper 1104 within the receiving cavity 1103 is restrained within the recessed portion 160 of one of the side walls 16 of the fixed terminal contact portion 131. The fixed terminal docking pin 132 is located within the first installation space 118.

[0051] The movable terminal 14 is formed by stamping and bending a metal plate. It includes a movable terminal base 141 extending longitudinally, a movable terminal docking foot 142 formed by bending downward from one longitudinal end of the movable terminal base 141, and a movable terminal contact portion 143 formed by extending from the other longitudinal end of the movable terminal base 141 toward the fixed terminal 13. The movable terminal base 141 is cantilevered, and the movable terminal contact portion 143 is roughly arc-shaped. The movable terminal 14 also includes two support arms 144 extending from the lateral side edges of the movable terminal base 141 to both sides. The portion of the movable terminal base 141 between the two support arms 144 and the two support arms 144 together form an arc-shaped structure, which forms a simply supported structure. The movable terminal 14 also includes a supporting portion 145 connected to the movable terminal contact portion 143. After the movable terminal 14 is assembled with the body 11, the movable terminal base 141 is suspended within the first accommodating space 1101 and confined between the two limiting posts 115. The portion of the movable terminal base 141 between the two support arms 144 is suspended above the protrusion 114 within the first accommodating space 1101. The provision of the protrusion 114 primarily serves to prevent the movable terminal base 141 from being excessively depressed. The movable terminal contact portion 143 is located within the first accommodating space 1101 and above the fixed terminal contact portion 131. The abutment portion 145 connected to the movable terminal contact portion 143 is suspended above the limiting block 1104 within the accommodating cavity 1103. The outer arc wall of the movable terminal contact portion 143 contacts the inner edge 17 of the side wall 16 of the fixed terminal contact portion 131, which has a recess 160. The movable terminal docking pin 142 is located within the second mounting space 119. The extended ends 146 of the two support arms 144 are respectively located in the two second accommodating spaces 1102. After the housing module 12 is assembled to the main body 11, the extended ends 146 of the two support arms 144 are both abutted against the insulating module 122. Since the portion of the movable terminal base 141 between the two support arms 144 and the two support arms 144 together form a simply supported structure, a holding force is generated on the insulating module 122, causing the insulating module 122 to generate a reaction force on the movable terminal 14, thereby ensuring that the movable terminal contact portion 143 is in stable contact with the fixed terminal contact portion 131. The portion of the movable terminal base 141 between the two support arms 144 is exposed from the docking hole 1220 for abutment by the external probe 15. The movable terminal base 141 can be elastically deformed in the direction of insertion and removal of the external probe 15.

[0052] During use, the external probe 15 is inserted from top to bottom through the docking hole 1220 and presses against the movable terminal base 141, thereby pressing the movable terminal base 141 downward. The movable terminal base 141 and the movable terminal contact portion 143 move downward together. At this time, the abutment portion 145 connected to the movable terminal contact portion 143 contacts the limit block 1104 in the receiving cavity 1103 and moves along the limit block 1104 toward the first mounting portion 116, thereby disconnecting the movable terminal contact portion 143 from the fixed terminal contact portion 131. After the external probe 15 is separated from the movable terminal base 141, due to the elastic effect of the cantilevered movable terminal base 141 itself, the movable terminal base 141 returns to its original position, and the movable terminal contact portion 143 resumes contact with the fixed terminal contact portion 131. Due to the setting of the simply supported structure, the contact stability between the fixed terminal contact portion 131 and the movable terminal contact portion 143 can be maximized.

[0053] See also Figures 11 to 14, which is a coaxial connector with an external probe described in the second embodiment of the present application. The difference between the coaxial connector of the second embodiment and the coaxial connector of the first embodiment is that: the main body 11 is provided with a first accommodating space 1101, and the first accommodating space 1101 is recessed downward from its bottom wall to form an accommodating cavity 1103, and the main body 11 includes a limit block 1104 protruding upward from the bottom wall of the accommodating cavity 1103, and the upper end surface of the limit block 1104 is horizontal. In the longitudinal direction, one side of the limit block 1104 has a guide slope 1105, and the guide slope 1105 is arranged toward the movable terminal 14. The fixed terminal 13 includes a flat-plate-shaped fixed terminal contact portion 131 and a fixed terminal docking pin 132 formed by bending and extending one end of the fixed terminal contact portion 131 downward. The fixed terminal contact portion 131 is provided with a recessed portion 160 on an edge of a side away from the fixed terminal docking pin 132. The fixed terminal contact portion 131 is installed in the accommodating cavity 1103, and the recessed portion 160 cooperates with the limit block 1104. The movable terminal 14 includes a movable terminal base 141, a movable terminal docking pin 142 formed by bending downward and extending from one longitudinal end of the movable terminal base 141, a movable terminal contact portion 143 formed by extending from the other longitudinal end of the movable terminal base 141 toward the fixed terminal 13, and a supporting portion 145 connected to the movable terminal contact portion 143. The movable terminal base 141 is cantilevered, and the movable terminal contact portion 143 is flat. When the external probe 15 does not act on the movable terminal base 141, the flat movable terminal contact portion 143 is located on the upper side of the flat fixed terminal contact portion 131 and the two are in contact with each other. The supporting portion 145 of the movable terminal 14 The guide slope 1105 of the limit block 1104 is arranged opposite to each other and spaced a certain distance apart. After the external probe 15 acts on the movable terminal base 141, the abutment portion 145 contacts the guide slope 1105 of the limit block 1104 and moves along the guide slope 1105 toward the first mounting portion 116. At this time, the movable terminal contact portion 143 is disengaged from the fixed terminal contact portion 131. After the external probe 15 is disengaged from the movable terminal base 141, due to the elastic effect of the cantilevered movable terminal base 141 itself, the movable terminal base 141 will return to its original position, and the movable terminal contact portion 143 will resume contact with the fixed terminal contact portion 131. The other structures of the coaxial connector of the second embodiment are the same as those of the coaxial connector of the first embodiment and will not be repeated here.

[0054] See also Figures 15 to 19The third embodiment of the present application is a coaxial connector with an external probe. The coaxial connector of the third embodiment differs from the coaxial connector of the first embodiment in that: the body 11 is provided with a first accommodating space 1101, which is recessed downward from its bottom wall to form a receiving cavity 1103. The body 11 includes a stopper 1104 extending upward from the bottom wall of the receiving cavity 1103. The fixed terminal 13 includes a flat fixed terminal contact portion 131 and a fixed terminal docking pin 132 formed by bending downward and extending from one end of the fixed terminal contact portion 131. The fixed terminal contact portion 131 is a rectangular frame, mounted within the receiving cavity 1103 and sleeved around the stopper 1104. A recessed portion 160 is provided on a side wall 16 of the fixed terminal contact portion 131, distal from the fixed terminal docking pin 132, and the stopper 1104 is provided with a guide slope 1105 adjacent to the recessed portion 160. The movable terminal 14 includes a movable terminal base 141, a movable terminal docking pin 142 formed by bending downward and extending from one longitudinal end of the movable terminal base 141, a movable terminal contact portion 143 formed by extending from the other longitudinal end of the movable terminal base 141 toward the fixed terminal 13, and a supporting portion 145 connected to the movable terminal contact portion 143. The movable terminal base 141 is cantilevered and the movable terminal contact portion 143 is arc-shaped. When the external probe 15 does not act on the movable terminal base 141, the movable terminal contact portion 143 is located on the upper side of the fixed terminal contact portion 131 and contacts each other, and the supporting portion 145 is located in the recessed portion 160. The outer arc wall of the movable terminal contact portion 143 contacts the side wall 16 of the fixed terminal 13 having the recessed portion 160. After the external probe 15 acts on the movable terminal base 141, the abutment portion 145 moves along the guide slope 1105 of the limit block 1104 toward the first mounting portion 116. At this time, the movable terminal contact portion 143 is disengaged from the fixed terminal contact portion 131. After the external probe 15 is disengaged from the movable terminal base 141, due to the elastic effect of the cantilevered movable terminal base 141 itself, the movable terminal base 141 will return to its original position, and the movable terminal contact portion 143 will resume contact with the fixed terminal contact portion 131. The other structures of the coaxial connector of the third embodiment are the same as those of the coaxial connector of the first embodiment, and will not be repeated here.

[0055] In the present application, the movable terminal 14 includes an arc-shaped simply supported structure formed by the portion of the movable terminal base 141 between the two support arms 144 and the two support arms 144. After the housing module 12 is assembled to the body 11, the extended ends 146 of the two support arms 144 are both against the insulating module 122. Since the arc-shaped simply supported structure generates a resisting force on the insulating module 122, the insulating module 122 generates a reaction force on the movable terminal 14, thereby ensuring that the movable terminal contact portion 143 is in contact with the fixed terminal contact portion 13 1 Stable contact; in addition, the movable terminal 14 includes a supporting portion 145 connected to the movable terminal contact portion 143. When the external probe 15 acts on the movable terminal base 141, the movable terminal base 141 drives the movable terminal contact portion 143 to move, and the supporting portion 145 abuts against the limit block 1104 in the receiving cavity 1103 of the body 11 and moves along the limit block 1104, thereby separating the movable terminal contact portion 143 from the fixed terminal contact portion 131. With this design, the elastic displacement of the movable terminal 14 is more durable.

[0056] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A coaxial connector having a docking hole for inserting an external probe, the coaxial connector being used to be fixed to a circuit board. The coaxial connector includes a body, a housing module fixed to the body, and fixed terminals and movable terminals correspondingly combined in the body and / or the housing module. The body and the housing module jointly define a displacement space, the movable terminal is at least partially located in the displacement space, and the displacement space is defined by an upper inner wall surface away from the circuit substrate along the insertion and removal direction of the external probe. The fixed terminal includes a fixed terminal contact portion and a fixed terminal docking pin, The movable terminal includes a cantilevered movable terminal base, a movable terminal docking pin formed by bending and extending from one longitudinal end of the movable terminal base, and a movable terminal contact portion formed by extending from the other longitudinal end of the movable terminal base toward the fixed terminal. The movable terminal contact portion is used to dock with the fixed terminal contact portion. The movable terminal base is at least partially exposed from the docking hole, and the movable terminal base can be elastically deformed in the insertion and removal direction of the external probe, characterized in that: The movable terminal further includes two support arms extending from both longitudinal side edges of the movable terminal base to both sides, and the two support arms abut against the upper inner wall surface along the removal direction of the external probe; The movable terminal base is located between the two support arms, and the portion for connecting the two support arms together with the two support arms forms an arc-shaped structure protruding toward the circuit substrate, and the extended ends of the two support arms abut against the upper inner wall surface; The movable terminal contact portion is located above the fixed terminal contact portion and the two are in contact with each other.

2. The coaxial connector according to claim 1, wherein: The movable terminal base is located between the two support arms, and a portion thereof for connecting the two support arms is exposed from the docking hole for abutment by the external probe.

3. The coaxial connector according to claim 1 or 2, wherein: The body includes two limiting columns protruding upward from the bottom wall of the displacement space, and the two limiting columns are located on both sides of the movable terminal base along the longitudinal direction of the movable terminal base.

4. The coaxial connector according to claim 1 or 2, wherein: The main body includes a protrusion protruding upward from the bottom wall of the displacement space, and the movable terminal base is located between the two support arms, and the part for connecting the two support arms is suspended above the protrusion.

5. The coaxial connector according to claim 1 or 2, wherein: The main body has a accommodating space, which includes a first accommodating space and two second accommodating spaces located on both sides of the first accommodating space along the longitudinal direction of the base of the movable terminal. The two second accommodating spaces are connected to the first accommodating space, and the extending ends of the two support arms are respectively located in the two second accommodating spaces.

6. The coaxial connector according to claim 1, wherein: The main body is provided with a limit block, and the movable terminal also includes a supporting portion connected to the movable terminal contact portion. After the external probe acts on the movable terminal base, the supporting portion abuts against the limit block and moves along the limit block, and the movable terminal contact portion is separated from the fixed terminal contact portion.

7. The coaxial connector according to claim 6, wherein: The limiting block is provided with a guide slope, and the abutting portion moves along the guide slope.

8. The coaxial connector according to claim 1 or 2, wherein: The main body includes a main body portion, two limiting portions formed by extending upward from opposite sides of the main body portion, and two mounting portions formed by extending upward from other opposite sides of the main body portion. The main body portion, the two limiting portions and the two mounting portions together form an accommodating space. The movable terminal base, the movable terminal contact portion and the two support arms are all accommodated in the accommodating space. The two mounting portions include a first mounting portion and a second mounting portion. The first mounting portion is provided with a first mounting space, and the fixed terminal docking foot is located in the first mounting space. The second mounting portion is provided with a second mounting space, and the movable terminal docking foot is located in the second mounting space.

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