CN107819215B - Connector - Google Patents

Abstract

The invention discloses a connector, comprising: an insulator; and a first terminal provided inside the insulator; and a plurality of second terminals circumferentially disposed outside the insulator. The connector further includes a metal housing for accommodating and surrounding the insulator, the plurality of second terminals being electrically connected to the metal housing, respectively; the plurality of second terminals respectively have elastic arms and electric contact portions formed on top of the elastic arms; and the bottom of the second terminal or the bottom of the metal housing is adapted to be soldered to a circuit board. In the foregoing exemplary embodiments of the present invention, the elastic arm type second terminal which is inexpensive, simple in structure and small in size is employed, and therefore, the structure of the connector is simplified, the cost of the connector is reduced, and the size of the connector is reduced.

Description

Connector

Technical Field

The present invention relates to a connector, and in particular to a board-to-board connector suitable for electrically connecting two circuit boards.

Background technique

In the prior art, a board-to-board radio frequency connector suitable for electrically connecting two circuit boards generally includes an insulator, a pogo pin signal terminal, four pogo pin ground terminals, and a housing. The pogo pin signal terminal is arranged at the center of the insulator. The insulator is accommodated in the housing. The four pogo pin ground terminals are distributed around the insulator and arranged on the housing.

When electrically connecting two circuit boards, the bottom soldering feet of a spring pin signal terminal and four spring pin grounding terminals are directly soldered to one circuit board, and at the same time, the top contact pins of a spring pin signal terminal and four spring pin grounding terminals are elastically electrically contacted with the other circuit board, thereby achieving electrical connection between the two circuit boards.

Since the existing board-to-board RF connector needs to use four spring pin grounding terminals, this not only leads to higher costs, but also increases the overall size of the RF connector, which is not conducive to the miniaturization of the RF connector.

Summary of the invention

An object of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

According to one aspect of the present invention, a connector is provided, comprising: an insulator; a first terminal arranged inside the insulator; and a plurality of second terminals arranged circumferentially outside the insulator. The connector also comprises a metal shell for accommodating and surrounding the insulator, the plurality of second terminals are respectively electrically connected to the metal shell; the plurality of second terminals respectively have elastic arms and electrical contact portions formed on the top of the elastic arms; and the bottom of the second terminal or the bottom of the metal shell is suitable for being soldered to a circuit board.

According to an embodiment of the present invention, the second terminal has a bottom soldering foot suitable for being soldered to the one circuit board.

According to another embodiment of the present invention, the metal housing has a cylindrical body, and the plurality of second terminals are disposed outside the cylindrical body of the metal housing.

According to another embodiment of the present invention, bottom solder legs of the plurality of second terminals are electrically connected to the bottom of the metal housing, so that the plurality of second terminals are electrically connected to the metal housing.

According to another embodiment of the present invention, the plurality of second terminals are distributed at intervals around the outer circumference of the metal housing.

According to another embodiment of the present invention, the connector includes four second terminals, and the four second terminals are evenly spaced and distributed around the outer circumference of the metal housing.

According to another embodiment of the present invention, the elastic arm of the second terminal is bent at least once, so that the elastic arm has at least two segments.

According to another embodiment of the present invention, each segment of the elastic arm of the second terminal extends in a direction inclined to the horizontal direction.

According to another embodiment of the present invention, the metal housing has bottom soldering feet suitable for being soldered to the one circuit board.

According to another embodiment of the present invention, the metal shell includes a cylindrical body and a bottom flange formed at the bottom of the cylindrical body and extending radially outward, and the bottom welding leg is formed on a bottom surface of the bottom flange.

According to another embodiment of the present invention, the plurality of second terminals are disposed outside the cylindrical body of the metal housing and are electrically connected to a top surface of a bottom flange of the metal housing.

According to another embodiment of the present invention, the bottom welding foot of the metal housing is located directly below the second terminal.

According to another embodiment of the present invention, the plurality of second terminals are distributed at intervals around the outer circumference of the metal housing.

According to another embodiment of the present invention, the connector includes four second terminals, and the four second terminals are evenly spaced and distributed around the outer circumference of the metal housing.

According to another embodiment of the present invention, the inner side surfaces of the multiple second terminals facing the metal shell are defined in a first circumferential surface coaxial with the cylindrical body of the metal shell; and the outer side surfaces of the multiple second terminals facing away from the metal shell are defined in a second circumferential surface coaxial with the cylindrical body of the metal shell.

According to another embodiment of the present invention, the elastic arm of the second terminal is bent at least once, so that the elastic arm has at least two segments.

According to another embodiment of the present invention, the elastic arm of the second terminal includes a horizontal segment extending horizontally and a vertical segment connected to the horizontal segment and extending vertically.

According to another embodiment of the present invention, the first terminal is a spring pin type elastic terminal.

According to another embodiment of the present invention, the first terminal comprises a contact pin adapted to be in elastic electrical contact with another circuit board and a bottom soldering foot adapted to be soldered to the one circuit board.

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

According to another embodiment of the present invention, the first terminal is a signal terminal, and the second terminal is a ground terminal.

In the aforementioned exemplary embodiments of the present invention, a low-cost, simple-structured and small-sized elastic arm-type second terminal is adopted, thereby simplifying the structure of the connector, reducing the cost of the connector, and reducing the size of the connector.

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

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective schematic diagram showing a connector according to a first embodiment of the present invention when viewed from the top side;

FIG2 is a perspective schematic diagram showing a connector according to a first embodiment of the present invention when viewed from the bottom side;

FIG3 is a schematic diagram showing the electrical connection of the connector shown in FIG1 and FIG2 between two circuit boards;

FIG4 is a perspective schematic diagram showing a connector according to a second embodiment of the present invention when viewed from the top side;

FIG5 is a perspective schematic diagram showing a connector according to a second embodiment of the present invention when viewed from the bottom side; and

FIG. 6 is a schematic diagram showing the electrical connection of the connector shown in FIG. 4 and FIG. 5 between two circuit boards.

Detailed ways

The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate 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 overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

According to an overall concept of the present invention, a connector is provided, comprising: an insulator; a first terminal arranged inside the insulator; and a plurality of second terminals arranged circumferentially outside the insulator. The connector also comprises a metal shell for accommodating and surrounding the insulator, the plurality of second terminals are respectively electrically connected to the metal shell; the plurality of second terminals respectively have elastic arms and electrical contact portions formed on the top of the elastic arms; and the bottom of the second terminal or the bottom of the metal shell is suitable for soldering to a circuit board.

First embodiment

Figures 1 to 3 show a connector 100 according to a first embodiment of the present invention. Figure 1 shows a perspective schematic diagram of the connector 100 according to the first embodiment of the present invention when viewed from the top side; Figure 2 shows a perspective schematic diagram of the connector 100 according to the first embodiment of the present invention when viewed from the bottom side; Figure 3 shows a schematic diagram of electrically connecting the connector 100 shown in Figures 1 and 2 between two circuit boards 10, 20.

As shown in FIGS. 1 to 3, in the illustrated embodiment, the connector mainly includes: an insulator 110, a first terminal 120, a metal shell 130 and a plurality of second terminals 140. The first terminal 120 is arranged inside the insulator 110. The plurality of second terminals 140 are arranged around the outside of the insulator 110. The metal shell 130 accommodates and surrounds the insulator 110. The plurality of second terminals 140 are electrically connected to the metal shell 130, respectively. The plurality of second terminals 140 respectively have an elastic arm 143 and an electrical contact portion 141 formed on the top of the elastic arm 143. The bottom of the plurality of second terminals 140 is suitable for being soldered to a circuit board 20.

In the illustrated embodiment, as shown in FIGS. 1 to 3 , the second terminal 140 has a bottom solder foot 142 suitable for being soldered to a circuit board 20 .

In one embodiment of the present invention, as shown in FIGS. 1 , 2 and 3 , the metal housing 130 has a cylindrical body, and the plurality of second terminals 140 are disposed outside the cylindrical body of the metal housing 130 .

In the illustrated embodiment, as shown in FIGS. 1 to 3 , the bottom welding legs 142 of the plurality of second terminals 140 are respectively electrically connected to the bottom of the metal housing 130 , so that the plurality of second terminals 140 are respectively electrically connected to the metal housing 130 .

In one embodiment of the present invention, as shown in FIGS. 1 , 2 and 3 , a plurality of second terminals 140 are distributed at intervals around the outer circumference of the metal housing 130 .

In the illustrated embodiment, as shown in FIGS. 1 to 3 , the connector includes four second terminals 140 . The four second terminals 140 are evenly spaced around the outer circumference of the metal housing 130 .

However, please note that the present invention is not limited to the illustrated embodiment, and the connector may also include two, three, five or more second terminals 140 .

In one embodiment of the present invention, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the elastic arm 143 of the second terminal 140 is bent at least once, so that the elastic arm 143 has at least two segments.

In the illustrated embodiment, as shown in FIGS. 1 to 3 , each segment of the elastic arm 143 of the second terminal 140 extends in a direction inclined with respect to the horizontal direction.

In the illustrated embodiment, as shown in Figures 1 to 3, the first terminal 120 is a spring pin type elastic terminal. As shown in Figures 1 to 3, the first terminal 120 includes a contact pin 121 suitable for elastically electrically contacting another circuit board 10 and a bottom welding foot 122 suitable for welding to a circuit board 20.

In one embodiment of the present invention, as shown in Figures 1 to 3, the connector may be a radio frequency connector. When the connector is a radio frequency connector, the first terminal 120 is a signal terminal, and the second terminal 140 is a ground terminal.

Second embodiment

4 to 6 show a connector 200 according to a second embodiment of the present invention. FIG4 shows a perspective schematic diagram of the connector 200 according to the second embodiment of the present invention when viewed from the top side; FIG5 shows a perspective schematic diagram of the connector 200 according to the second embodiment of the present invention when viewed from the bottom side; and FIG6 shows a schematic diagram of electrically connecting the connector 200 shown in FIG4 and FIG5 between two circuit boards 10, 20.

As shown in FIGS. 4 to 6, in the illustrated embodiment, the connector mainly includes: an insulator 210, a first terminal 220, a metal shell 230 and a plurality of second terminals 240. The first terminal 220 is arranged inside the insulator 210. The plurality of second terminals 240 are arranged around the outside of the insulator 210. The metal shell 230 accommodates and surrounds the insulator 210. The plurality of second terminals 240 are electrically connected to the metal shell 230, respectively. The plurality of second terminals 240 respectively have elastic arms 243 and electrical contact portions 241 formed on the tops of the elastic arms 243. The bottom of the metal shell 230 is suitable for being welded to a circuit board 20.

In the illustrated embodiment, as shown in FIGS. 4 to 6 , the metal housing 230 has bottom solder feet 232 suitable for being soldered to a circuit board 20 .

In one embodiment of the present invention, as shown in FIGS. 4 , 5 and 6 , the metal shell 230 includes a cylindrical body and a bottom flange 231 formed at the bottom of the cylindrical body and extending radially outward, and a bottom welding foot 232 is formed on the bottom surface of the bottom flange 231 .

In the illustrated embodiment, as shown in FIGS. 4 to 6 , a plurality of second terminals 240 are disposed outside the cylindrical body of the metal housing 230 and are electrically connected to the top surface of the bottom flange 231 of the metal housing 230 .

In the illustrated embodiment, as shown in FIGS. 4 to 6 , the bottom welding foot 232 of the metal housing 230 is located directly below the second terminal 140 .

In one embodiment of the present invention, as shown in FIGS. 4 , 5 and 6 , a plurality of second terminals 240 are distributed at intervals around the outer circumference of the metal housing 230 .

In the illustrated embodiment, as shown in FIGS. 4 to 6 , the connector includes four second terminals 240 . The four second terminals 240 are evenly spaced around the outer circumference of the metal housing 230 .

However, please note that the present invention is not limited to the illustrated embodiment, and the connector may also include two, three, five or more second terminals 240 .

In the illustrated embodiment, as shown in Figures 4 to 6, the inner side surfaces of the plurality of second terminals 240 facing the metal shell 230 are defined in a first circumferential surface coaxial with the cylindrical body of the metal shell 230. The outer side surfaces of the plurality of second terminals 240 facing away from the metal shell 230 are defined in a second circumferential surface coaxial with the cylindrical body of the metal shell 230.

In one embodiment of the present invention, as shown in FIG. 4 , FIG. 5 and FIG. 6 , the elastic arm 243 of the second terminal 240 is bent at least once, so that the elastic arm 243 has at least two segments.

In the illustrated embodiment, as shown in FIGS. 4 to 6 , the elastic arm 243 of the second terminal 240 includes a horizontal segment extending horizontally and a vertical segment connected to the horizontal segment and extending vertically.

In the illustrated embodiment, as shown in Figures 4 to 6, the first terminal 220 is a spring pin type elastic terminal. As shown in Figures 4 to 6, the first terminal 220 includes a contact pin 221 suitable for elastically electrically contacting another circuit board 10 and a bottom welding foot 222 suitable for welding to a circuit board 20.

In one embodiment of the present invention, as shown in Figures 4 to 6, the connector may be a radio frequency connector. When the connector is a radio frequency connector, the first terminal 220 is a signal terminal, and the second terminal 240 is a ground terminal.

Those skilled in the art can understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing conflicts in structure or principle.

Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled 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 of which 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. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims (9)

1. A connector, comprising:

an insulator (110); and

a first terminal (120) provided inside the insulator (110); and

a plurality of second terminals (140) circumferentially arranged outside the insulator (110),

the method is characterized in that:

the connector further comprises a metal housing (130) for accommodating and surrounding the insulator (110), the plurality of second terminals (140) being electrically connected to the metal housing (130), respectively;

the plurality of second terminals (140) respectively have elastic arms (143) and electric contact portions (141) formed on top of the elastic arms (143); and is also provided with

The bottom of the second terminal (140) is adapted to be soldered to a circuit board (20); -said second terminal (140) having a bottom solder foot (142) adapted to be soldered to said one circuit board (20); bottom solder feet (142) of the plurality of second terminals (140) are electrically connected to the bottom of the metal housing (130) such that the plurality of second terminals (140) are electrically connected to the metal housing (130); the spring arm (143) of the second terminal (140) is bent at least once such that the spring arm (143) has at least two segments, wherein each of the at least two segments is straight.

2. The connector according to claim 1, wherein:

the metal shell (130) has a cylindrical body, and the plurality of second terminals (140) are provided outside the cylindrical body of the metal shell (130).

3. The connector according to claim 1, wherein:

the plurality of second terminals (140) are spaced around the outer periphery of the metal housing (130).

4. A connector according to claim 3, wherein:

the connector comprises four second terminals (140), the four second terminals (140) being evenly spaced around the outer circumference of the metal housing (130).

5. The connector according to claim 1, wherein:

each segment of the elastic arm (143) of the second terminal (140) extends in a direction inclined from the horizontal direction.

6. The connector according to claim 1, wherein: the first terminal (120) is a spring pin type elastic terminal.

7. The connector of claim 6, wherein:

the first terminal (120) comprises a contact pin (121) adapted to make elastic electrical contact with another circuit board (10) and a bottom solder foot (122) adapted to be soldered to the one circuit board (20).

8. The connector according to claim 1, wherein: the connector is a radio frequency connector.

9. The connector of claim 8, wherein:

the first terminal (120) is a signal terminal, and the second terminal (140) is a ground terminal.