CN106921066B - coaxial connector - Google Patents

Abstract

The invention discloses a coaxial connector, which comprises an insulating seat body, a first connecting piece and a second connecting piece, wherein the insulating seat body is provided with a plugging space; the movable terminal is provided with a first fixing part, a pushing part and two first contact parts, the first fixing part is fixedly arranged on the insulating seat body, and the pushing part is exposed out of the splicing space; the fixed terminal is provided with a second fixing part and a second contact part, the second fixing part is fixedly arranged on the insulating seat body, and the two first contact parts clamp and contact the second contact part; the coaxial connector is provided with the two first contact parts to clamp and contact one second contact part of the fixed terminal together, so that the movable terminal is contacted with the fixed terminal more stably and reliably, the service life is longer, and the clamping and contacting mode can improve the anti-interference performance of the movable terminal and the fixed terminal during signal transmission.

Description

coaxial connector

【Technical field】

The invention relates to the technical field of electrical connection, in particular to a coaxial connector with stable contact between a movable terminal and a fixed terminal.

【Background technique】

In communication equipment such as mobile phones, it is usually necessary to install coaxial connectors to facilitate checking the status or performance of high-frequency circuits installed in the equipment. At present, the structure of the coaxial connector is roughly as follows: the fixed terminal and the movable terminal are installed in the insulating seat body, and the outer side of the insulating seat body is covered with a metal shell, and a central terminal for the docking plug is formed on the insulating seat body. The plug-in space structure, after the central terminal is inserted into the plug-in space, pushes the movable terminal away from the fixed terminal, disconnects the electronic circuit that was originally turned on, and at the same time, the movable terminal contacts the central terminal, and the central terminal becomes a conductive state. The terminal leads the electrical signal from the electronic circuit to the outside, so as to check the state and performance of the circuit.

In the prior art, the above-mentioned fixed terminal and the movable terminal generally use one-sided lap contact, that is, the contact is realized by the movable terminal abutting against the lower surface of the fixed terminal upwards or the side surface of the fixed terminal is abutted and contacted by the movable terminal from the side. However, with the development of communication equipment such as mobile phones in the direction of miniaturization, the dimensions of coaxial connectors are correspondingly smaller and smaller, which leads to the above-mentioned traditional single-side lap contact method due to the limitation of structural space. , cannot ensure effective and reliable long-term contact, especially after long-term use, there will be problems such as poor contact between the moving terminal and the fixed terminal, loss of elasticity of the moving terminal, and shortened service life. The anti-interference performance of the moving terminal and the fixed terminal is also relatively poor during signal transmission.

Therefore, it is necessary to provide a new coaxial connector to overcome the above problems.

【Content of invention】

Aiming at the problems faced by the background technology, the purpose of the present invention is to provide a coaxial connector that ensures effective and reliable long-term contact between the movable terminal and the fixed terminal by clamping and contacting the fixed terminal with the movable terminal.

To achieve the above object, the present invention adopts the following technical means:

A coaxial connector, which includes an insulating seat body, which is provided with a plug-in space, and a movable terminal has a first fixing part, a pushing part and two first contact parts, and the first fixing part is fixed on the insulating seat body, the pushing part is exposed in the plug-in space, a certain terminal has a second fixing part and a second contact part, the second fixing part is fixed on the insulating seat body, and the two first contact parts clamp and contact the second contact part. department.

Further, two first extension arms are bent and extended from the first fixing portion, and the two first extension arms respectively form a pushing portion.

Further, the two pushing parts are parallel to each other.

Further, a guide part is extended from the resisting part, and the guide part is exposed in the insertion space.

Further, the first extension arm is formed by bending and extending vertically from the first fixing part.

Further, the two first extension arms each have a first vertical portion, which is bent from the first vertical portion toward the second contact portion to form a first bending portion, and from the first bending portion toward the second contact portion. The direction of the contact portion is bent to form a pushing portion, and the distance between the two pushing portions is smaller than the distance between the two first vertical portions.

Further, the first bending portion is arc-shaped, and the two first bending portions bend and extend in directions away from each other.

Further, the two first bending parts are arranged symmetrically.

Further, the two first bent parts are arranged asymmetrically, and the length of one first bent part is greater than the length of the other first bent part.

Further, a second bending portion bends and extends from the pushing portion, and the second bending portion connects the first contact portion and the pushing portion, and the two second bending portions bend and extend toward a direction approaching each other.

Further, a second extension arm extends from one side of the second fixing portion, the second contact portion is disposed on the second extension arm, and the second extension arm has a second vertical portion connected downward to the second fixing portion.

Further, a connection part is bent and extended laterally from one end of the second vertical part away from the first contact part, and a contact arm is bent and extended from one end of the connection part toward the direction close to the first contact part, and the second contact part is located at end of the contact arm.

Further, the contact arm is parallel to the second vertical part, and the second vertical part, the connecting part and the second fixing part are arranged perpendicular to each other.

Further, a limiting portion is formed by bending and extending upwards from the other side of the second fixing portion.

Further, the insulating seat body is spliced by a first body and a second body, the first fixing part is fixed on the first body, the insertion space is set on the first body, and the second fixing part is fixed on the second body, The second body has a bottom located below the movable terminal and the fixed terminal.

Further, the above-mentioned coaxial connector is used for inserting a mating plug, and the mating plug has a central terminal, and the central terminal enters the insertion space to push the pushing part, and the first contact part is separated from the second contact part.

Further, a cover body is covered on the insulating base body, and the cover body is provided with a receiving cavity corresponding to the insertion space, and the insertion space is located in the storage cavity.

Compared with the prior art, the present invention has the following beneficial effects:

After the coaxial connector of the present invention is assembled, the two first contact parts of the movable terminal jointly clamp and contact the second contact part of the fixed terminal, so that the contact between the movable terminal and the fixed terminal is more stable and reliable, and the service life is longer. This way of clamping contact can also improve the anti-interference performance during signal transmission between the movable terminal and the fixed terminal.

【Description of drawings】

Fig. 1 is a top view of the first embodiment of the coaxial connector of the present invention;

Fig. 2 is an exploded view of the first embodiment of the coaxial connector of the present invention;

Fig. 3 is an exploded view from another perspective of the first embodiment of the coaxial connector of the present invention;

4 is a schematic diagram of the contact between the movable terminal and the fixed terminal in the first embodiment of the coaxial connector of the present invention;

Fig. 5 is a bottom view of the first embodiment of the coaxial connector of the present invention;

Figure 6 is an exploded view of Figure 5;

Fig. 7 is an exploded view of the second embodiment of the coaxial connector of the present invention;

Fig. 8 is a partial combined schematic diagram of Fig. 7;

FIG. 9 is an exploded view of a third embodiment of the coaxial connector of the present invention.

Description of the accompanying drawings for specific embodiments:

Insulation base 1 First Body 11 Second body 12 Docking space 13 bottom 14 Moving terminal 2 first fixing part 21 first extension arm 22 first vertical part 221 The first bending part 222 push part 223 Guide 224 The second bending part 225 first contact portion 23 first welding part 24 fixed terminal 3 second fixing part 31 Second extension arm 32 Second vertical part 321 connection part 322 contact arm 323 second contact portion 33 Limiting part 34 Second welding part 35 Cover 4 Containment chamber 41 Fixed foot 42

【Detailed ways】

In order to facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

Please refer to Figures 1 to 3, a coaxial connector is used to be installed on a circuit board (not shown, the same below), and it is used in conjunction with a pair of mating plugs (not shown, the same below), the mating plug It has a central terminal, and the central terminal is used to be plugged into the coaxial connector. The coaxial connector includes an insulating base body 1, a movable terminal 2 and a fixed terminal 3 are fixed on the insulating base body 1, and a cover body 4 is covered In the insulating seat body 1.

Please refer to Fig. 2, Fig. 3 and Fig. 5, the insulating seat body 1 is composed of a first body 11 and a second body 12 spliced together, an insertion space 13 is provided in the first body 11, and the second body 12 has a bottom 14 Located below the movable terminal 2 and the fixed terminal 3, the central terminal can enter the insertion space 13 and push the movable terminal 2, wherein the movable terminal 2 and the fixed terminal 3 can be integrally injection-molded with the first body 11 and the second body 12 respectively, also It can be assembled, and the insulating base body 1 formed by splicing in this way is easy to control the precision in terms of manufacturing process, and is simple and easy to operate, especially the assembled method, and the insertion space 13 is only provided on the first body 11, so that The accuracy of the plug-in space 13 is also guaranteed.

Please refer to Fig. 2 to Fig. 4, the movable terminal 2 has a first fixing part 21, the first fixing part 21 is fixed on the first body 11, and there are first extensions bent upwards from both sides of the first fixing part 21 respectively. Arm 22, the first extension arm 22 is formed by bending and extending vertically from the first fixed part 21, which is beneficial to save space, increase the flexibility of the movable terminal 2, and the bending and forming process is also simple. The two first extension arms 22 are respectively It has a first vertical portion 221, which is bent from the first vertical portion 221 toward the fixed terminal 3 to form a first bent portion 222, and is bent from the first bent portion 222 toward the fixed terminal 3 to form a The pushing part 223, the pushing part 223 is exposed in the insertion space 13, the distance between the two pushing parts 223 of the two first extension arms 22 is smaller than the distance between the two first vertical parts 221, and the two The two pushing parts 223 are parallel to each other, which facilitates plugging and pushing of the central terminal. The two pushing parts 223 respectively extend with a guide part 224, and the guide part 224 is exposed in the insertion space 13. By setting the guide part 224, when the center terminal is inserted into the insertion space 13, it can smoothly push the second part of the push terminal 2. An extension arm 22 separates it from the fixed terminal 3 . A second bending portion 225 bends and extends from the pushing portion 223 , and the second bending portion 225 is connected to a first contact portion 23 , and the second bending portions 225 of the two first extension arms 22 approach each other. Bending and extending, the two first extension arms 22 are arranged symmetrically to each other, and a first welding portion 24 is provided from one side of the first fixing portion 21, and the first welding portion 24 is used for welding to the circuit board.

Please refer to FIG. 2 to FIG. 4, the fixed terminal 3 has a second fixing portion 31, the second fixing portion 31 is fixed on the second body 12, and a second extension arm is bent upward from one side of the second fixing portion 31. 32. This design is beneficial to save space, increase the elasticity of the fixed terminal 3, and the process of bending and forming is also simple. A second contact portion 33 is provided on the second extension arm 32, and the second extension arm 32 has a second vertical The straight portion 321 connects downward to the second fixing portion 31 , and a connecting portion 322 is laterally bent and extended from one end of the second vertical portion 321 away from the first contact portion 23 . Bending and extending a contact arm 323 in the direction, the second contact portion 33 is located at the end of the contact arm 323; the two first contact portions 23 of the movable terminal 2 clamp and contact the second contact portion 33, the first bending portion 222 and The setting of the second bending portion 225 can not only increase the clamping contact force of the two first contact portions 23 to the second contact portion 33, but also can shrink in order to ensure that the first extension arm 22 is not easy to break, and the first contact The part 23 and the second contact part 33 are in contact with the plate surface, and the contact area is large. Further, the contact arm 323 is parallel to the second vertical portion 321, and the second vertical portion 321 and the connecting portion 322 are arranged perpendicular to the second fixing portion 31. Such arrangement can not only increase the elasticity of the contact arm 323, but also It can ensure that the second extension arm 32 is not easy to break. A limiting portion 34 is formed by bending upwards from the other side of the second fixing portion 31 , the connecting portion 322 extends from the second vertical portion 321 toward the limiting portion 34 , and the contact arm 323 is located on the second vertical portion Between 321 and the limiting part 34, no extra space will be occupied, and the space resource of the fixed terminal 3 itself is fully utilized. A second soldering portion 35 is provided from one side of the second fixing portion 31 , and the second soldering portion 35 is used for soldering to the circuit board.

Please refer to Fig. 1, Fig. 2 and Fig. 6, the cover body 4 is provided with a receiving cavity 41 corresponding to the insertion space 13, the receiving cavity 41 runs through the cover body 4 up and down, the insertion space 13 is located in the receiving cavity 41, the two sides of the cover body 4 One fixing foot 42 is provided on each side, and the two fixing feet 42 , the first welding part 24 and the second welding part 35 are respectively arranged on different sides of the insulating base body 1 .

Referring to Fig. 1, Fig. 2 and Fig. 6, after the coaxial connector is assembled, the coaxial connector is welded to the circuit by two fixing feet 42, a first welding part 24 and a second welding part 35 board, welded firmly, at this time, the two first contact parts 23 clamp and contact the second contact part 33, then insert the center terminal of the butt plug into the insertion space 13, push the push part 223 by the center terminal, so that The first extension arm 22 is displaced toward two sides, so that the two first contact portions 23 are separated from the second contact portion 33 , and the resisting portion 223 is in contact with the central terminal.

Please refer to Fig. 7 and Fig. 8, which are the second embodiment of the coaxial connector of the present invention, the difference from the first embodiment is that the two first vertical parts 221 are respectively upward from one end of the first fixed part 21 Bending and extensibility, the first vertical part 221 and the first fixing part 21 are also vertically arranged, the first bending part 222 is an arc-shaped U-shaped structure, and the two first bending parts 222 are bent in a direction away from each other. Bending and extending, so that the first extension arm 22 has better elasticity, and the two first bending parts 222 are arranged asymmetrically, that is, the length of one of the first bending parts 222 is greater than the length of the other first bending part 222, so The volumes of the moment arms corresponding to the two first extension arms 22 are also different. When the coaxial connector shakes, or when an external object impacts the coaxial connector, irregular vibrations will definitely occur. In physics , because the volumes of the two first extension arms 22 are different, so their natural frequencies are different. During the subsequent irregular vibration, the two first extension arms 22 will not reach the maximum resonance amplitude at the same time, so it is applied to Vibration environment, the two first extension arms 22 will not be disconnected from the fixed terminal 3 at the same time, that is, the two first contact parts 23 will not be disconnected from the second contact part 33 at the same time, ensuring the stability of the movable terminal 2 and the fixed terminal 3 Contact and contact continuity prevent the problem of momentary interruption; at the same time, when docking with the docking plug, the two first extension arms 22 will not be disconnected from the center terminal at the same time, which can also solve the problem of signal momentary interruption , to ensure the continuity of signal transmission.

Please refer to FIG. 9 , which is the third embodiment of the coaxial connector of the present invention. The difference from the first embodiment is that the two first vertical parts 221 are respectively bent and extended upwards from one end of the first fixing part 21. Formed, the first vertical portion 221 and the first fixing portion 21 are also vertically arranged, the first bending portion 222 is an arc-shaped U-shaped structure, and the two first bending portions 222 are bent and extended in a direction away from each other. The first bending portion 222 is symmetrically arranged and has a U-shaped structure, so that the first extending arm 22 has better elasticity.

Please refer to FIG. 4 , after the coaxial connector of the present invention is assembled, the two first contact portions 23 of the movable terminal 2 clamp and contact the second contact portion 33 of the fixed terminal 3 together, so that the movable terminal 2 and the fixed terminal 3 The contact is more stable and reliable, and the service life is longer, and this clamping contact method can also improve the anti-interference performance of the moving terminal 2 and the fixed terminal 3 when signal transmission is carried out; in the present invention, the moving terminal 2 is provided with two The first extension arm 22 is taken as an example. Of course, in other embodiments, the movable terminal 2 can also be provided with only one first extension arm 22 extending from the first fixing part 21, and the end of the first extension arm 22 is provided with two A first contact portion 23 is used to clamp the second contact portion 33 of the fixed terminal 3 , and the first extension arm 22 also has a resisting portion 223 exposed in the insertion space 13 .

Although the embodiments of the present invention are disclosed as above, they are not intended to limit the present invention. Any person skilled in the related art, without departing from the spirit and scope of the present invention, can refer to the shapes, structures, and features described in the application scope of the present invention. And the spirit should be slightly changed, so the patent protection scope of the present invention must be defined by the patent claims as the criterion.

Claims (13)

1. A coaxial connector, characterized in that it comprises: an insulating base body with a plug-in space, a movable terminal with a first fixed part, a pushing part and two first contact parts, the first fixed The part is fixed on the insulating base body, and the pushing part is exposed in the plug-in space. A certain terminal has a second fixing part and a second contact part, the second fixing part is fixed on the insulating base body, and the two first contact parts clamp Hold and contact the second contact portion, bend and extend two first extension arms from the first fixing portion, the two first extension arms respectively form a pushing portion, and the two first extension arms respectively have a first vertical portion A first bending portion is formed by bending from the first vertical portion toward the second contact portion, and a pushing portion is formed by bending from the first bending portion toward the second contacting portion, between the two pushing portions The distance between the two first vertical parts is smaller than the distance between the two first vertical parts, and the two first bent parts are arranged asymmetrically, wherein the length of one first bent part is greater than the length of the other first bent part. 2. The coaxial connector according to claim 1, wherein the two pushing portions are parallel to each other. 3. The coaxial connector as claimed in claim 1, wherein a guide part is extended from the pushing part, and the guide part is exposed in the insertion space. 4. The coaxial connector as claimed in claim 1, wherein the first extension arm is formed by bending and extending perpendicularly from the first fixing portion. 5. The coaxial connector according to claim 1, wherein the first bending portion is arc-shaped, and the two first bending portions are bent toward directions away from each other. 6. The coaxial connector according to claim 1, wherein a second bending portion is bent and extended from the pushing portion, and the second bending portion connects the first contact portion and the pushing portion, and the two The second bending part bends and extends toward a direction close to each other. 7. The coaxial connector according to claim 1, wherein a second extension arm extends from one side of the second fixing portion, the second contact portion is provided on the second extension arm, and the second extension arm has a The second vertical portion is downwardly connected to the second fixing portion. 8. The coaxial connector according to claim 7, characterized in that: a connecting portion is laterally bent and extended from an end of the second vertical portion away from the first contact portion, and a connecting portion is extended from one end of the connecting portion toward the first contacting portion A contact arm is bent and extended in the direction of the contact arm, and the second contact portion is arranged at the end of the contact arm. 9 . The coaxial connector according to claim 8 , wherein the contact arm is parallel to the second vertical portion, and the second vertical portion and the connecting portion are perpendicular to the second fixing portion. 10 . The coaxial connector as claimed in claim 7 , wherein a limiting portion is formed by bending and extending upward from the other side of the second fixing portion. 11 . 11. The coaxial connector according to claim 1, characterized in that: the insulating base is spliced by a first body and a second body, the first fixing part is fixed on the first body, and the insertion space is set on The first body, the second fixing part is fixed on the second body, and the second body has a bottom located below the movable terminal and the fixed terminal. 12. The coaxial connector according to claim 1, characterized in that: the coaxial connector is used for plugging a pair of mating plugs, the mating plug has a central terminal, and the central terminal enters the insertion space to push against part, the first contact part is separated from the second contact part. 13 . The coaxial connector as claimed in claim 1 , wherein a cover covers the insulating base, and the cover is provided with a receiving cavity corresponding to the insertion space, and the insertion space is located in the receiving cavity. 14 .