CN107819262A - Connector - Google Patents

Abstract

The invention discloses a connector, comprising: a single integrated external terminal; a single integrated central terminal disposed in the external terminal; and an insulator disposed between the external terminal and the central terminal to isolate the external terminal from the central terminal. The external terminal has an elastic structure, so that the external terminal can be elastically deformed at least in its axial direction; and at least one axial groove is respectively formed on the two ends of the central terminal, and the at least one axial groove The slot divides the end of the central terminal into multiple lobes, so that each end of the central terminal acts like a resilient finger with a multi-lobed structure. In the present invention, the external terminal is integrated with an elastic structure. Therefore, there is no need to provide additional springs for the external terminals, thereby reducing the number of component parts of the connector, reducing the cost and difficulty of assembly, and reducing the volume of the connector.

Description

Connector

technical field

The invention relates to a connector, in particular to a radio frequency coaxial connector.

Background technique

In the prior art, a PCB (printed circuit board) to PCB RF coaxial connector generally includes a first outer terminal, a second outer terminal, an outer spring, a first central terminal, a second central terminal and an inner spring. The first external terminal is welded on the first circuit board, the second external terminal is slidably fitted in the first external terminal, and the external spring is arranged between the first external terminal and the second external terminal for pushing the second external terminal pressed against the second circuit board such that the second external terminal makes electrical contact with the second circuit board. The first center terminal is welded on the first circuit board, the second center terminal is slidably fitted in the first center terminal, and the inner spring is arranged between the first center terminal and the second center terminal for pushing the second center terminal Pressing against the second circuit board causes the second center terminal to make electrical contact with the second circuit board.

In the prior art, the radio frequency coaxial connector not only needs to adopt at least two outer terminals and an outer spring, but also needs to adopt at least two central terminals and an inner spring. Therefore, the existing radio frequency coaxial connector has the problem of too many components, which will lead to an increase in the cost of the radio frequency coaxial connector, large volume and complicated assembly.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

According to an object of the present invention, there is provided a connector capable of reducing the number of constituent parts, thereby reducing the cost and difficulty of assembling the connector, and reducing the volume of the connector.

According to an aspect of the present invention, there is provided a connector comprising: a single integral external terminal; a single integral central terminal disposed in the external terminal; and an insulator disposed between the external terminal and the central terminal Between, the outer terminal and the central terminal are isolated. The external terminal has an elastic structure such that the external terminal is elastically deformable at least in its axial direction.

According to an embodiment of the present invention, a spiral groove is formed on the external terminal, and the spiral groove rotates around the axis of the external terminal at least once, so that the part of the external terminal formed with the spiral groove is like a A coil spring such that the external terminal is elastically deformable at least in its axial direction.

According to an embodiment of the present invention, at least one axial groove is respectively formed on the two ends of the central terminal, and the at least one axial groove divides the end of the central terminal into multiple lobes, so that the Each end of the center terminal acts like a resilient finger with a multi-lobed structure.

According to an embodiment of the present invention, the external terminal includes a first end portion, a second end portion and an intermediate portion between the first end portion and the second end portion; the first end portion and the second end portion The outer diameter of the second end portion is larger than the outer diameter of the middle portion, and the inner diameters of the first end portion and the second end portion are larger than the inner diameter of the middle portion.

According to another embodiment of the present invention, the spiral groove is formed on the middle portion of the external terminal such that the middle portion of the external terminal acts like a coil spring.

According to another embodiment of the present invention, the central terminal includes a main body portion between two ends thereof, the main body portion includes a first main body end, a second main body end, and a main body located between the first main body end and the an intermediate body portion between the second body ends; the diameters of the first body end and the second body end are greater than the diameter of the intermediate body portion.

According to another embodiment of the present invention, the insulator includes: a first insulator accommodated in the first end portion of the external terminal and sleeved on one end of the middle body portion of the central terminal; and a second insulator Two insulators are accommodated in the second end portion of the external terminal and are fitted over the other end of the central body portion of the central terminal.

According to another embodiment of the present invention, a first positioning step is formed at the connection between the first main body end of the central terminal and the middle main body part, and a first positioning step is formed at the connection between the first end part and the middle part of the external terminal. There is a second positioning step, and the two ends of the first insulator are respectively positioned on the first positioning step and the second positioning step.

According to another embodiment of the present invention, a third positioning step is formed at the connection between the second main body end of the central terminal and the middle main body, and a third positioning step is formed at the connection between the second end of the external terminal and the middle part. There is a fourth positioning step, and the two ends of the second insulator are respectively positioned on the third positioning step and the fourth positioning step.

According to another embodiment of the present invention, each end portion of the central terminal includes a rod-shaped body portion and a spherical head formed on a top end of the rod-shaped body portion; and the rod-shaped body portion and the The spherical head is divided into multiple lobes by said at least one axial groove formed on each end of said central terminal.

According to another embodiment of the present invention, the spherical head is suitable for guiding the end of the central terminal to be smoothly inserted into the assembly hole on the circuit board; when the end of the central terminal is inserted into the circuit When the center terminal is inserted into the mounting hole on the circuit board, the end of the central terminal is in elastic electrical contact with the inner wall of the mounting hole on the circuit board.

According to another embodiment of the present invention, a first boss is formed on the outer surface of the first end of the external terminal, and the first boss is suitable for being soldered to a first circuit board; and on the A second protrusion is formed on the outer surface of the second end of the external terminal, and the second protrusion is suitable for elastic electrical contact with the second circuit board.

According to another embodiment of the present invention, four axial grooves are formed on each end of the central terminal, and the four axial grooves divide each end of the central terminal into four lobes.

According to another embodiment of the present invention, the connector is a radio frequency coaxial connector.

According to another embodiment of the invention, said connector has a completely symmetrical structure.

In the foregoing exemplary embodiments according to the present invention, the connector adopts a single integral external terminal integrated with a coil spring structure. Therefore, there is no need to provide an additional external spring for the external terminal, thereby reducing the number of component parts of the connector, reducing the cost and difficulty of assembling the connector, and reducing the volume of the connector.

Furthermore, in some of the foregoing exemplary embodiments according to the present invention, the connector adopts a single integral center terminal integrated with a multi-lobed elastic finger structure. Therefore, there is no need to provide an additional internal spring for the central terminal, thereby further reducing the number of component parts of the connector, reducing the cost and difficulty of assembling the connector, and reducing the volume of the connector.

Other objects and advantages of the present invention will be apparent from the following description of the present invention with reference to the accompanying drawings, and may help to provide a comprehensive understanding of the present invention.

Description of drawings

FIG. 1 shows a schematic perspective view of a radio frequency coaxial connector according to an embodiment of the present invention;

Figure 2 shows a longitudinal sectional view of the RF coaxial connector shown in Figure 1; and

FIG. 3 shows a schematic diagram of the radio frequency coaxial connector shown in FIG. 2 being connected between the first circuit board and the second circuit board.

Detailed ways

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

According to a general technical concept of the present invention, there is provided a connector, comprising: a single integral external terminal; a single integral central terminal disposed in the external terminal; and an insulator disposed between the external terminal and the central Between the terminals, the outer terminal is isolated from the central terminal. The external terminal has an elastic structure such that the external terminal is elastically deformable at least in its axial direction.

Fig. 1 shows a perspective view of a radio frequency coaxial connector according to an embodiment of the present invention; Fig. 2 shows a longitudinal sectional view of the radio frequency coaxial connector shown in Fig. 1; and Fig. 3 shows a radio frequency coaxial connection shown in Fig. 2 A schematic diagram of the device connected between the first circuit board 10 and the second circuit board 20.

Hereinafter, the present invention will be specifically explained and illustrated by taking the radio frequency coaxial connector shown in FIG. 1 to FIG. 3 as an example. However, please note that the present invention is not limited to the illustrated RF coaxial connector, and the present invention is also applicable to other types of connectors.

In one embodiment of the present invention, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the RF coaxial connector mainly includes a single integral external terminal 100 , a single integral central terminal 200 and an insulator 300 .

As shown in FIGS. 1 to 3 , a single integral center terminal 200 is provided in the external terminal 100 . The insulator 300 is disposed between the external terminal 100 and the central terminal 200 , holds and positions the central terminal 200 in the external terminal 100 , and electrically isolates the external terminal 100 from the central terminal 200 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, a spiral groove 131 is formed on the external terminal 100 , and the spiral groove 131 rotates around the axis of the external terminal 100 at least once, so that the external terminal 100 is formed with a spiral groove 131 . Portion 130 of slot 131 acts like a coil spring.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, at least one axial groove 213 , 223 is respectively formed on the two ends 210 , 220 of the central terminal 200 . The aforementioned at least one axial groove 213 , 223 divides the ends 210 , 220 of the central terminal 200 into multiple lobes, so that each end 210 , 220 of the central terminal 200 is like an elastic finger with a multi-lobed structure.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the external terminal 100 includes a first end portion 110 , a second end portion 120 and an intermediate portion between the first end portion 110 and the second end portion 120 130. The outer diameter of the first end portion 110 and the second end portion 120 is larger than the outer diameter of the middle portion 130 , and the inner diameter of the first end portion 110 and the second end portion 120 is larger than the inner diameter of the middle portion 130 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, a spiral groove 131 is formed on the middle portion 130 of the external terminal 100 such that the middle portion 130 of the external terminal 100 acts like a coil spring.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the central terminal 200 includes a main body portion 230 located between its two ends 210, 220, the main body portion 230 includes a first main body end 231, a second The body end 232 and the intermediate body portion 233 between the first body end 231 and the second body end 232 . The diameters of the first body end 231 and the second body end 232 are larger than the diameter of the middle body portion 233 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the insulator 300 includes a first insulator 310 and a second insulator 320 . The first insulator 310 is accommodated in the first end portion 110 of the external terminal 100 and fitted over one end of the middle body portion 233 of the central terminal 200 . The second insulator 320 is accommodated in the second end portion 120 of the external terminal 100 and fitted on the other end of the middle body portion 233 of the central terminal 200 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, a first positioning step 2311 is formed at the connection between the first main body end 231 of the central terminal 200 and the middle main body portion 233 , and at the first positioning step 2311 of the external terminal 100 A second positioning step 1101 is formed at the junction of the end portion 110 and the middle portion 130 , and the two ends of the first insulator 310 are respectively positioned on the first positioning step 2311 and the second positioning step 1101 . In this way, the first insulator 310 can be reliably positioned between the first end portion 110 of the external terminal 100 and the first body end 231 of the central terminal 200 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, a third positioning step 2321 is formed at the junction of the second body end 232 of the central terminal 200 and the middle body portion 233 , and a third positioning step 2321 is formed at the second A fourth positioning step 1201 is formed at the junction of the end portion 120 and the middle portion 130 , and the two ends of the second insulator 320 are respectively positioned on the third positioning step 2321 and the fourth positioning step 1201 . In this way, the second insulator 320 can be reliably positioned between the second end portion 120 of the external terminal 100 and the second body end 232 of the central terminal 200 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, each end portion 210 , 220 of the central terminal 200 includes a rod-shaped body portion 211 , 221 and a top end formed on the rod-shaped body portion 211 , 221 . Spherical heads 212,222.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the aforementioned rod-shaped body portions 211 , 221 and spherical head portions 212 , 222 are formed on at least one of each end portion 210 , 220 of the center terminal 200 . The axial slots 213, 223 are divided into multiple lobes.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the spherical heads 212, 222 are suitable for guiding the ends 210, 220 of the central terminal 200 to be smoothly inserted into the assembly holes 11, 20 on the circuit boards 10, 20. 21 in.

As shown clearly in Fig. 3, when the end portion 210,220 of the center terminal 200 is inserted in the assembly hole 11,21 on the circuit board 10,20, the end portion 210,220 of the center terminal 200 and the circuit board 10,20 The inner walls of the assembly holes 11 and 21 on the upper surface are in elastic electrical contact.

As shown in Figures 1 to 3, in the illustrated embodiment, a first boss 111 is formed on the outer end surface of the first end 110 of the external terminal 100, and the first boss 111 is suitable for being welded to the first on the circuit board 10. A second boss 121 is formed on the outer surface of the second end portion 120 of the external terminal 100 , and the second boss 121 is suitable for being in elastic electrical contact with the second circuit board 20 .

As shown in Fig. 1 clearly, in the illustrated embodiment, four axial grooves 213, 223 are formed on each end portion 210, 220 of the central terminal 200, and these four axial grooves 213, 223 connect the central terminal 200 Each end 210, 220 of the lobes is divided into four lobes. However, the present invention is not limited to the illustrated embodiment, for example, one, two, three, five or more axial grooves may be formed on each end portion 210 , 220 of the central terminal 200 .

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the connector has a completely symmetrical structure. In this way, when connecting the connector to the first circuit board and the second circuit board, there is no need to distinguish the two ends of the connector, thereby facilitating the connection operation of the connector.

In the foregoing embodiments of the present invention, since the single integral external terminal 100 is integrated with the coil spring structure, the single integral central terminal 200 is integrated with the multi-lobe elastic finger structure. Therefore, when the first circuit board 10 and the second circuit board 20 are interconnected with the aforementioned radio frequency coaxial connector, a large radial offset and The axial offset can also ensure that the RF coaxial connector has good RF electrical performance.

In the embodiments shown in FIGS. 1 to 3 , the external terminal 100 is integrated with a coil spring structure. However, the present invention is not limited to the illustrated embodiment, and the external terminal may also have other elastic structures. For example, the elastic structure on the external terminal may be an arc-shaped elastic connecting arm located in the middle of the external terminal.

Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can improve them, and the structures described in various embodiments do not conflict with each other in terms of structure or principle Can be combined freely.

Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation of the present invention.

While certain embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element references in the claims should not be construed as limiting the scope of the invention.

Claims (15)

1. A connector, characterized in that, comprising: a single integral external terminal (100); a single integral center terminal (200), disposed within said outer terminal (100); and an insulator (300), arranged between the external terminal (100) and the central terminal (200), isolating the external terminal (100) from the central terminal (200), in, The external terminal (100) has an elastic structure such that the external terminal (100) is elastically deformable at least in its axial direction. 2. The connector according to claim 1, characterized in that: A spiral groove (131) is formed on the external terminal (100), and the spiral groove (131) rotates around the axis of the external terminal (100) at least once, so that the formation of the external terminal (100) is somewhat The part (130) of the spiral groove (131) is like a coil spring, so that the external terminal (100) can be elastically deformed at least in its axial direction. 3. The connector according to claim 1, characterized in that: At least one axial groove (213, 223) is respectively formed on the two ends (210, 220) of the central terminal (200), and the at least one axial groove (213, 223) connects the central terminal The ends (210, 220) of (200) are divided into multiple lobes, so that each end (210, 220) of said central terminal (200) is like an elastic finger with a multi-lobed structure. 4. The connector according to claim 2, characterized in that: The external terminal (100) includes a first end portion (110), a second end portion (120) and an intermediate portion ( 130); The outer diameter of the first end portion (110) and the second end portion (120) is larger than the outer diameter of the middle portion (130), and the first end portion (110) and the second end portion The inner diameter of the portion (120) is larger than the inner diameter of said intermediate portion (130). 5. The connector according to claim 4, characterized in that: The spiral groove (131) is formed on the middle portion (130) of the external terminal (100) such that the middle portion (130) of the external terminal (100) acts like a coil spring. 6. The connector according to any one of claims 2-5, characterized in that: The central terminal (200) includes a main body (230) between its two ends (210, 220), and the main body (230) includes a first main body end (231), a second main body end (232) ) and an intermediate body portion (233) between said first body end (231) and said second body end (232); The diameters of the first body end (231) and the second body end (232) are larger than the diameter of the intermediate body portion (233). 7. The connector according to claim 6, characterized in that, the insulator (300) comprises: a first insulator (310) accommodated in said first end portion (110) of said external terminal (100) and fitted over one end of an intermediate body portion (233) of said central terminal (200); and The second insulator (320) is accommodated in the second end portion (120) of the external terminal (100), and is sleeved on the other end of the middle body portion (233) of the central terminal (200). 8. The connector according to claim 7, characterized in that: A first positioning step (2311) is formed at the connection between the first main body end (231) of the central terminal (200) and the middle main body part (233), and a first positioning step (2311) is formed at the first end part ( 110) A second positioning step (1101) is formed at the junction of the middle part (130), and the two ends of the first insulator (310) are positioned on the first positioning step (2311) and the second positioning step (2311) respectively. Locate on the steps (1101). 9. The connector according to claim 8, characterized in that: A third positioning step (2321) is formed at the connection between the second main body end (232) of the central terminal (200) and the middle main body part (233), and a third positioning step (2321) is formed at the second end part ( 120) and the middle part (130) are formed with a fourth positioning step (1201), and the two ends of the second insulator (320) are positioned on the third positioning step (2321) and the fourth positioning step (2321) respectively. Locate on the steps (1201). 10. The connector according to claim 3, characterized in that: Each end portion (210, 220) of the central terminal (200) includes a rod-shaped body portion (211, 221) and a spherical head (212) formed on the top end of the rod-shaped body portion (211, 221). , 222); and The rod-shaped body portion (211, 221) and the spherical head portion (212, 222) are formed on the at least one axial direction on each end portion (210, 220) of the central terminal (200). The slots (213, 223) are divided into multiple lobes. 11. The connector according to claim 10, characterized in that: The spherical head (212, 222) is adapted to guide the end (210, 220) of the central terminal (200) to be smoothly inserted into the assembly hole (11, 21) on the circuit board (10, 20); When the ends (210, 220) of the center terminal (200) are inserted into the assembly holes (11, 21) on the circuit board (10, 20), the ends of the center terminal (200) (210, 220) are in elastic electrical contact with the inner wall of the assembly hole (11, 21) on the circuit board (10, 20). 12. The connector according to claim 1, characterized in that: A first boss (111) is formed on the outer end surface of the first end (110) of the external terminal (100), and the first boss (111) is suitable for welding to the first circuit board (10) on; and A second boss (121) is formed on the outer surface of the second end (120) of the external terminal (100), and the second boss (121) is suitable for being elastically connected to the second circuit board (20). electrical contact. 13. The connector according to claim 3, characterized in that: Four axial grooves (213, 223) are formed on each end (210, 220) of the central terminal (200), and the four axial grooves (213, 223) connect the central terminal (200) Each end (210, 220) of the tube is divided into four lobes. 14. The connector according to claim 1, wherein the connector is a radio frequency coaxial connector. 15. The connector according to claim 1, wherein the connector has a completely symmetrical structure.