Coaxial switch connector

Abstract

The utility model discloses a coaxial switch connector, and the connector comprises an insulating main body which is provided with a hollow functional cavity and a probe jack which communicates the functional cavity with the outside; the movable terminal comprises a fixed section, an elastic section and a butt joint section; the fixed terminal comprises a fixed part, a contact part and a butt joint part; the metal shell covers the periphery of the insulating main body; the elastic section comprises a first deformation section, a second deformation section and a third deformation section which are integrally connected; the first deformation section comprises a first arm formed by upwards extending one end of the fixed section and a second arm formed by downwards folding the upper end edge of the first arm; the second deformation section is formed by extending the lower end edge of the second arm towards one side of the fixed terminal along the transverse direction; the third deformation section is formed by bending the free end of the second deformation section downwards and backwards; and the free end position of the second deformation section is in elastic contact with the lower part of the contact part of the fixed terminal, so that the contact stability of the movable terminal and the fixed terminal can be improved.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a coaxial switch connector. Background Art

[0002] For the prior art, please refer to Chinese utility model patent CN203205584U, which discloses a structure of an electronic signal switch connector, which is mainly composed of an insulating shell, an elastic terminal, a fixed terminal and a shielding shell, wherein the insulating shell has an elastic terminal chamber, a fixed terminal chamber and an insertion hole, the elastic terminal chamber and the fixed terminal chamber of the insulating shell respectively accommodate the elastic terminal and the fixed terminal, the elastic terminal has an elastic arm, the fixed terminal has a fixed arm, the elastic arm of the elastic terminal elastically presses against the fixed arm of the fixed terminal, the elastic terminal and the fixed terminal respectively have welding parts, the welding parts of the elastic terminal and the fixed terminal respectively extend out of the insulating shell, the insertion hole of the insulating shell can allow the terminal of the docking connector to penetrate, and the shielding shell is covered on the surface of the insulating shell.

[0003] The elastic terminal has a main body, and an elastic arm and a welding part extend from the end edge of the main body of the elastic terminal respectively. The main body of the elastic terminal is accommodated in the elastic terminal chamber of the insulating housing base. The elastic arm of the elastic terminal is a long cantilever extending from the main body of the elastic terminal, so that the elastic arm of the elastic terminal can produce a certain amount of elastic deformation when subjected to external force. The welding part of the elastic terminal extends out of the insulating housing, so that the elastic terminal can be electrically connected to the circuit board outside the insulating housing through the welding part. When pushed by the insertion of an external probe, the elastic arm will swing downward and disconnect from the fixed terminal. In this process, stress is concentrated at the position where the elastic arm is connected to the main body, which will cause the elastic terminal to undergo irreversible plastic deformation and damage and failure.

[0004] Therefore, it is necessary to design a new coaxial switch connector to make up for the above-mentioned defects in the prior art. Utility Model Content

[0005] The purpose of the present application is to provide a coaxial switch connector to improve the stability of the moving terminal.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A coaxial switch connector, comprising:

[0008] An insulating body is formed with a hollow functional cavity and a probe insertion hole connecting the functional cavity with the outside world;

[0009] The movable terminal comprises a fixed section, an elastic section and a docking section, wherein the fixed section is fixed to the insulating body, the elastic section protrudes into the functional cavity and can be elastically deformed, and the docking section protrudes out of the insulating body;

[0010] A fixed terminal, comprising a fixing portion, a contact portion and a docking portion, wherein the fixing portion is fixed to the insulating body, the contact portion is exposed into the functional cavity, and the docking portion protrudes and is exposed outside the insulating body;

[0011] A metal shell, which is arranged on the outer periphery of the insulating body;

[0012] The elastic section includes a first deformation section, a second deformation section, and a third deformation section which are integrally connected;

[0013] The first deformation section includes a first arm formed by extending upward from one end of the fixed section and a second arm formed by folding back the upper edge of the first arm downward;

[0014] The second deformation section is formed by the lower edge of the second arm extending laterally toward one side of the fixed terminal;

[0015] The third deformation section is formed by folding the free end of the second deformation section downward and backward;

[0016] The free end of the second deformation section is in elastic contact with the lower portion of the contact portion of the fixed terminal.

[0017] Furthermore, the first arm can swing along the extension direction of the second deformation section with its connection end with the fixed section as a fulcrum; the second arm can swing along the extension direction of the second deformation section with its connection end with the first arm as a fulcrum.

[0018] Furthermore, the second deformation section is provided with a scraping hole at a position below the probe insertion hole for contact and scraping by a probe inserted through the probe insertion hole.

[0019] Further, when the probe is inserted into the functional cavity through the probe insertion hole and the second deformation section is pressed downward:

[0020] One end of the elastic segment uses the connection end of the first arm and the fixed segment as a fixed fulcrum, and the other end of the elastic segment uses the third deformation segment as a simple support point to support the inner bottom surface of the functional cavity of the insulating body downward to undergo elastic bending deformation;

[0021] The first arm elastically swings toward the fixed terminal side with its connection end with the fixed section as a fulcrum;

[0022] The bending angle formed between the first arm and the second arm increases;

[0023] The bending angle formed between the second arm and the second deformation section increases;

[0024] The bending angle formed between the second deformation section and the third deformation section is reduced.

[0025] Furthermore, the first arm is in an upright shape.

[0026] Furthermore, the bending angle formed between the first arm and the second arm is no greater than 30 degrees.

[0027] Furthermore, a bending angle formed between the second deformation section and the third deformation section is no greater than 30 degrees.

[0028] Furthermore, the insulating body includes a first insulator and a second insulator stacked on the first insulator in an up-down direction;

[0029] The functional cavity and the probe insertion hole are recessed and formed in the first insulator, and the lower part of the functional cavity is closed and defined by the second insulator;

[0030] A plurality of implant pins extending from the fixing section and embedded upwardly into the lower end surface of the peripheral wall of the first insulator defining the functional cavity;

[0031] The fixing section is clamped by the upper surface and the lower end surface of the first insulator.

[0032] Furthermore, the fixed terminal is integrally formed and fixed with the second insulator.

[0033] Furthermore, the second deformation section is formed by the lower end edge of the second arm extending laterally toward one side of the fixed terminal and obliquely upward, and the angle between the second deformation section and the horizontal plane is not greater than 10 degrees.

[0034] Further, the free end of the third deformation segment forms a bifurcated structure, so that the free end of the third deformation segment is spaced to form a first contact arm and a second contact arm, and a gap is formed between the first contact arm and the second contact arm; or,

[0035] The connection position of the second deformation section and the third deformation section and the entire third deformation section form a bifurcated structure, so that the third deformation section is separated to form a first contact arm and a second contact arm, and a spacing gap is formed between the first contact arm and the second contact arm, and the spacing gap extends to the connection position of the second deformation section and the third deformation section;

[0036] The first contact arm and the second contact arm are correspondingly supported downward on the inner bottom surface of the functional cavity of the insulating body to form two simply supported fulcrums.

[0037] Compared with the prior art, the beneficial effects of the present application are: the movable terminal of the present application adopts a multi-section lever arm structure, which has better elasticity, strong stability, is not prone to plastic deformation, and has good resilience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a three-dimensional schematic diagram of the coaxial switch connector of the present application.

[0039] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the coaxial switch connector from another angle.

[0040] Figure 3 yes Figure 1 Top view of the coaxial switch connector.

[0041] Figure 4 It is Figure 3 Section view along line AA.

[0042] Figure 5 yes Figure 1 The partial three-dimensional exploded view of the coaxial switch connector mainly shows the three-dimensional schematic diagram of the metal shell combined with the second insulator after being separated from the first insulator, and also shows the three-dimensional diagram of the matching state of the moving terminal and the static terminal with the first insulator.

[0043] Figure 6 yes Figure 5 A three-dimensional diagram from another angle.

[0044] Figure 7 This is the second embodiment of the movable terminal of the coaxial switch connector of the present application.

[0045] Figure 8 This is the third embodiment of the movable terminal of the coaxial switch connector of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "combined", "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 a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, the terms "including" and "having" used in this article and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0048] Please refer to Figures 1 to 6 As shown, a coaxial switch connector disclosed in the present application comprises: an insulating body 1, a movable terminal 2 fixed to the insulating body 1, a fixed terminal 3 fixed to the insulating body 1, and a metal shell 4 covering the outer periphery of the insulating body 1. The insulating body 1 comprises a first insulator 11 and a second insulator 12 stacked on the first insulator 11 in the up-down direction. The lower end surface 1201 of the second insulator 12 is recessed upward to form a functional cavity 101, and the upper end surface is further penetrated upward by the functional cavity 101 to form a probe insertion hole 102. The lower part of the functional cavity 101 is closed and defined by the second insulator 12. The metal shell 4 is an integrated draw-out metal shell, which is covered and arranged around the outer periphery of the insulating body 1. The metal shell 4 is also provided with a buckling foot 401 bent and buckled on the lower surface of the insulating body 1.

[0049] The fixed terminal 3 includes a fixing portion 31, a contact portion 32 and a docking portion 33, wherein the fixing portion 31 and the second insulator 12 are fixed by integral injection molding, the contact portion 32 is exposed in the functional cavity 101, and the docking portion 33 protrudes and is exposed outside the insulating body 1. The cross-section of the fixed terminal 3 is roughly Z-shaped. The movable terminal 2 includes a fixing section 21, an elastic section 22 and a docking section 23, wherein the fixing section 21 is fixed to the second insulator 12, the elastic section 22 protrudes into the functional cavity 101 and can be elastically deformed, and the docking section 23 protrudes and is exposed outside the insulating body 1. Specifically, the two side edges of the fixing section 21 are bent upward to extend with a plurality of implantation feet 211, and the implantation feet 211 are upwardly embedded and assembled in the lower end surface 1201 of the peripheral wall of the second insulator 12 that defines the functional cavity 101.

[0050] After the first insulator 11 and the second insulator 12 are stacked and assembled in the up-down direction, the fixed section 21 is clamped by the upper surface 1101 and the lower end surface 1201 of the first insulator 11. Specifically, the elastic section 22 includes a first deformation section 221, a second deformation section 222, and a third deformation section 223 that are integrally connected. The first deformation section 221 is formed with a first arm 2211 formed by extending upward from one end of the fixed section 21 and a second arm 2212 formed by folding back the upper end edge of the first arm 2211 downward. The second deformation section 222 is formed by the lower end edge of the second arm 2212 extending horizontally toward one side of the fixed terminal. The third deformation section 223 is formed by folding back the free end of the second deformation section 222 downward and backward (the third deformation section 223 is located below the free end of the second deformation section 222). The free end position of the second deformation section 222 is elastically in contact with the lower side of the contact portion 32 of the fixed terminal 3.

[0051] In a preferred embodiment of the present application, the first arm 2211 is in an upright shape. The bending angle formed between the first arm 2211 and the second arm 2212 is not greater than 30 degrees. The bending angle formed between the second deformation section 222 and the third deformation section 223 is not greater than 30 degrees. The second deformation section 222 is formed by the lower edge of the second arm 2212 extending horizontally toward the fixed terminal side and tilting upward, and the angle between the second deformation section 222 and the horizontal plane is not greater than 10 degrees.

[0052] When the probe is inserted through the probe jack 102 and the second deformation section 222 is pressed downward (roughly pressed near the middle position in the extension direction of the second deformation section 222): one end of the elastic section 22 uses the connection end of the first arm 2211 and the fixed section 21 as a fixed fulcrum, and the other end of the elastic section 22 uses the third deformation section 223 to support downward the inner bottom surface of the functional cavity 101 of the insulating body 1 (actually the upper surface 1101 of the first insulator 11 in the embodiment of the present application) as a simple support point to undergo elastic bending and deformation downward. Specifically, the middle position of the second deformation section 222 is elastically bent downward and deformed; the first arm 2211 is elastically deflected toward the fixed terminal side with its connection end with the fixed section 21 as a fulcrum; the bending angle formed between the first arm 2211 and the second arm 2212 increases; the bending angle formed between the second arm 2212 and the second deformation section 222 increases; the bending angle formed between the second deformation section 222 and the third deformation section 223 decreases.

[0053] Through the structure of the movable terminal 2 designed in the present application, especially the structural design of the elastic section 22, when the probe is inserted into the probe hole 102 and presses the second deformation section 222 downward, the first arm 2211, the second arm 2212, the second deformation section 222, and the third deformation section 223 can all effectively bear the deformation stress, forming a multi-section force arm structure, which evenly disperses the stress generated by the insertion pressure of the probe at multiple angles on the entire elastic section 22, effectively preventing the movable terminal 2 from being pressed downward and causing irreversible plastic deformation. After the probe is pulled out, the resilience of the elastic section 22 is stable, which can ensure that the contact / disconnection between the movable terminal 2 and the fixed terminal 3 is stable and effective.

[0054] The manufacturing method of the coaxial switch connector described in the embodiment of the present application includes the following steps: first, fix the fixed terminal 3 and the metal shell 4 to the second insulator 12 by integral injection molding; second, insert the movable terminal 2 from bottom to top (the directions are relative here, such as turning the second insulator 12 upside down from top to bottom) and assemble it into the second insulator 12; third, stack the first insulator 1 in the up-down direction and cover it on the second insulator 12; fourth, bend the two retaining legs 401 formed on the lower edge of the metal shell 4 and retain them on the lower surface of the insulating body 1. Finally, the assembly is completed.

[0055] Please refer to Figures 3 to 6 As shown, the second deformation section 222 has a scraping hole 2220 at the lower position of the probe plug hole 102 for the probe inserted through the probe plug hole 102 to contact and scrape. When the probe is inserted through the probe plug hole 102 and pushes the second deformation section 222, the head of the probe can form a scraping at the position of the scraping hole 2220 to achieve a dust removal effect and improve the contact stability of the moving terminal 2 and the static terminal 3. A preferred embodiment is that the scraping hole 2220 is located at a slightly offset position directly below the probe plug hole 102 (see the specific embodiment). Figure 3 as shown) to ensure the scraping effect.

[0056] Please refer to Figure 7 As shown, it is a second embodiment of the movable terminal 2 of the coaxial switch connector of the present application. The second embodiment is similar to Figures 1 to 6 The difference between the movable terminal 2 shown in the figure is that: in the second embodiment, along the probe insertion direction, the free end position of the third deformation section 223 located below the second deformation section 222 in the movable terminal 2 forms a bifurcated structure, so that the free end of the third deformation section 223 is spaced to form a first contact arm 2231' and a second contact arm 2232'. A gap (not numbered) is formed between the first contact arm 2231' and the second contact arm 2232'. Two simply supported fulcrums are formed by the first contact arm 2231' and the second contact arm 2232' correspondingly supporting downwardly on the inner bottom surface of the functional cavity 101 of the insulating body 1 (the upper surface 1101 of the first insulator 11).

[0057] Please refer to Figure 8 As shown, it is a third embodiment of the movable terminal 2 of the coaxial switch connector of the present application. The third embodiment is similar to Figures 1 to 6 The difference between the movable terminal 2 shown in the figure is that: in the third embodiment, the connection position of the second deformation section 222 and the third deformation section 223 and the entire third deformation section 223 form a forked structure, so that the third deformation section 223 is separated to form a first contact arm 2231" and a second contact arm 2232". A spacing gap (unnumbered) is formed between the first contact arm 2231" and the second contact arm 2232", and the spacing gap extends to the connection position of the second deformation section 222 and the third deformation section 223. Two simply supported fulcrums are formed by the first contact arm 2231" and the second contact arm 2232" correspondingly supporting downward on the inner bottom surface of the functional cavity 101 of the insulating body 1 (the upper surface 1101 of the first insulator 11).

[0058] Figure 7 and Figure 8In the alternative embodiment of the movable terminal 2 shown in the figure, by forming a forked structure at the free end of the movable terminal 2, the third deformation section 223 is abutted against the inner bottom surface of the functional cavity 101 of the insulating body 1 to form two simply supported fulcrums, which can weaken the rigidity of the third deformation section 223 formed after bending at a large angle, so that the third deformation section 223 can disperse stress more effectively.

[0059] In addition, in the present application, the shape of the scraping hole 2220 of the movable terminal 2 is not limited, and can be an ellipse, a circle, a trapezoid or other shapes.

[0060] Obviously, the embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A coaxial switch connector, comprising: An insulating body is formed with a hollow functional cavity and a probe insertion hole connecting the functional cavity with the outside world; The movable terminal comprises a fixed section, an elastic section and a docking section, wherein the fixed section is fixed to the insulating body, the elastic section protrudes into the functional cavity and can be elastically deformed, and the docking section protrudes out of the insulating body; A fixed terminal, comprising a fixing portion, a contact portion and a docking portion, wherein the fixing portion is fixed to the insulating body, the contact portion is exposed into the functional cavity, and the docking portion protrudes and is exposed outside the insulating body; The metal shell is disposed on the outer periphery of the insulating body and is characterized in that: The elastic section includes a first deformation section, a second deformation section, and a third deformation section which are integrally connected; The first deformation section includes a first arm formed by extending upward from one end of the fixed section and a second arm formed by folding back the upper edge of the first arm downward; The second deformation section is formed by the lower edge of the second arm extending laterally toward one side of the fixed terminal; The third deformation section is formed by folding the free end of the second deformation section downward and backward; The free end of the second deformation section is in elastic contact with the lower portion of the contact portion of the fixed terminal.

2. The coaxial switch connector according to claim 1, characterized in that: The first arm can swing along the extension direction of the second deformation section with its connection end with the fixed section as a fulcrum; the second arm can swing along the extension direction of the second deformation section with its connection end with the first arm as a fulcrum.

3. The coaxial switch connector according to claim 1, characterized in that: The second deformation section is provided with a scraping hole at a position below the probe insertion hole for contact and scraping by a probe inserted through the probe insertion hole.

4. The coaxial switch connector according to claim 2, characterized in that: When the probe is inserted into the functional cavity through the probe insertion hole and the second deformation section is pressed downward: One end of the elastic segment uses the connection end of the first arm and the fixed segment as a fixed fulcrum, and the other end of the elastic segment uses the third deformation segment as a simple support to support the inner bottom surface of the functional cavity of the insulating body downward to undergo elastic bending deformation; The first arm elastically swings toward the fixed terminal side with its connection end with the fixed section as a fulcrum; The bending angle formed between the first arm and the second arm increases; The bending angle formed between the second arm and the second deformation section increases; The bending angle formed between the second deformation section and the third deformation section is reduced.

5. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The first arm is in an upright shape.

6. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The bending angle formed between the first arm and the second arm is no greater than 30 degrees.

7. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The bending angle formed between the second deformation section and the third deformation section is no greater than 30 degrees.

8. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The insulating body includes a first insulator and a second insulator stacked on the first insulator in an up-down direction; The functional cavity and the probe insertion hole are recessed and formed in the first insulator, and the lower part of the functional cavity is closed and defined by the second insulator; A plurality of implant pins extending from the fixing section and embedded upwardly into the lower end surface of the peripheral wall of the first insulator defining the functional cavity; The fixing section is clamped by the upper surface and the lower end surface of the first insulator.

9. The coaxial switch connector according to claim 8, characterized in that: The fixed terminal is integrally formed and fixed with the second insulator.

10. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The second deformation section is formed by the lower end edge of the second arm extending laterally toward one side of the fixed terminal and obliquely upward, and the angle between the second deformation section and the horizontal plane is no greater than 10 degrees.

11. The coaxial switch connector according to claim 1 or 2 or 3 or 4, characterized in that: The free end of the third deformation segment forms a bifurcated structure, so that the free end of the third deformation segment is spaced to form a first contact arm and a second contact arm, and a gap is formed between the first contact arm and the second contact arm; or, The connection position of the second deformation section and the third deformation section and the entire third deformation section form a bifurcated structure, so that the third deformation section is separated to form a first contact arm and a second contact arm, and a spacing gap is formed between the first contact arm and the second contact arm, and the spacing gap extends to the connection position of the second deformation section and the third deformation section; The first contact arm and the second contact arm are correspondingly supported downward on the inner bottom surface of the functional cavity of the insulating body to form two simply supported fulcrums.

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