CN204720596U - connector structure - Google Patents

Abstract

A connector structure is suitable for being fixed to a circuit board to transmit high-frequency electronic signals. The connector has a plurality of signal terminals and at least one ground terminal. The plurality of signal terminals are paired signal terminals to transmit a set of differential electronic signals. The tail ends of each signal terminal and the ground terminal are used to form an electrical connection with the circuit board. The tail end of each signal terminal is welded and fixed to a surface of the circuit board, and at least one tail end of the ground terminal passes through the surface of the circuit board and is welded and fixed.

Description

connector structure

technical field

The utility model relates to a connector structure, in particular to a connector structure suitable for being welded on a circuit board, and the connector can transmit high-frequency electronic signals between the circuit board and a pair of complementary connectors .

Background technique

As the amount of data transmitted between multiple electronic devices continues to increase, in order to provide more user-friendly experience, the speed of signal transmission between multiple electronic devices also increases accordingly. In order to allow users to transmit a large amount of electronic data in a shorter period of time, in addition to increasing the channels for transmitting electronic signals between electronic devices, the current corresponding measure is to increase the frequency of electronic signals transmitted between electronic devices. However, under the trend of miniaturization of electronic devices, the high-frequency electronic signals are likely to cause crosstalk, which makes the originally transmitted high-frequency electronic signals generate noise. Therefore, when the frequency of the electronic signal transmitted between different electronic devices continues to increase, the connector must also consider the adverse effects of the high-frequency electronic signal on the high-frequency electronic signal when it passes through the connector, and the adverse high-frequency The cause of electronic signal transmission is controlled or appropriate corresponding measures are taken to reduce its substantial impact, so that high-frequency electronic signals can be completely transmitted among multiple electronic devices.

As shown in Figure 7, the typical prior art such as U.S. Patent No. 8465302, the connector belongs to a circuit board (not shown in the drawings) connector fixed in an electronic device, and the connector belongs to a Connectors are vertically stacked above and below the surface of the circuit board. In FIG. 7, the connector may be a double-layer connector, that is, the connector may be regarded as having two docking ports for mating with two separate mating connectors (not shown in the drawings). In this prior art, the connector includes an insulating shell A and four signal terminals B, each of which has a pair of butt end B1, a connecting portion B2 and a tail end B3, each of which butt end B1 It can form mechanical contact with the docking connector, each tail end B3 is used to form an electrical connection with the circuit board, and each connecting portion B2 is respectively connected to each of the docking end B1 and the tail end B3.

In the aforementioned figures, the tail end B3 of each signal terminal B has a through hole B31 respectively, and the tail end B3 of each signal terminal B has the ability to be elastically deformed by using the through hole B31 of each tail end B3. Once the tail end B3 of each of the signal terminals B passes through the circuit board, the circuit board is fastened by the elastic recovery force of each tail end B3, which is commonly known as a press-fit terminal.

Since the tail end B3 pushed into the fixed terminal must pass through the circuit board, a plurality of through holes (through holes, not shown in the accompanying drawings) must be made on the circuit board, so that the tail end B3 of each terminal B can be fastened to the board. circuit board. However, it is disadvantageous to make multiple through-holes on a circuit board that transmits high-frequency electronic signals, because the spacing between each through-hole limits the distance between adjacent terminals, and the number of through-holes increases the accuracy of the circuit board. Difficulties in circuit trace layout, especially if the circuit board has multiple layers of circuit traces. What's more, because the connectors that generally use push-in fixed terminals are not welded on the circuit board, and rely solely on the retention force formed by fastening the circuit board at the tail end B3 of each terminal B, this connector is not suitable for users to An environment where the mating connector can be mated multiple times.

In order to solve the aforementioned problems, this prior art designs a special arrangement of terminal B tail end B3, but this arrangement is still aimed at push-in fixed terminals, and does not effectively solve the aforementioned problems.

Utility model content

The main purpose of the utility model is to provide a connector structure, the connector has a plurality of terminal pairs for transmitting high-frequency electronic signals, and the connector is suitable for being fixed on a circuit board.

The secondary purpose of the utility model is to provide a connector structure, the connector has a plurality of terminal pairs for transmitting high-frequency electronic signals, and the connector has the effect of isolating high-frequency electromagnetic wave noise.

The connector proposed by the utility model mainly includes an insulating shell, a plurality of signal terminals and at least one grounding terminal. The insulating housing is used to fix the positions of the signal terminals and the ground terminals. The plurality of signal terminals transmit a set of differential electronic signals by paired signal terminals, and the ground terminals are positioned adjacent to each other. Between two pairs of signal terminals. Each of the signal terminals and the ground terminal has a pair of connecting ends, a connecting portion and a tail end respectively, the tail ends of each of the signal terminals are fixed on the outer surface of the circuit board by welding, and the ground terminals have at least one The tail end passes through the outer surface of the circuit board of the circuit board.

The utility model proposes a connector structure, the connector is suitable to be fixed on a circuit board, and the connector can transmit high-frequency electronic signals between a pair of connectors and the circuit board, the connector includes a An insulating housing, a plurality of signal terminals and at least one grounding terminal, the insulating housing is used to fix the position of each of the signal terminals and the grounding terminal, and the plurality of signal terminals are transmitted by a pair of signal terminals. For moving electronic signals, each of the signal terminals and the ground terminal has a pair of connecting ends, a connecting portion and a tail end respectively, and the butt ends of each of the signal terminals and the grounding terminals can form mechanical contact with the docking connector, and each of the signal terminals And the tail end of the ground terminal is used to form an electrical connection with the circuit board, the connection parts of the signal terminals and the ground terminal are respectively connected to the butt end and the tail end, and the connection part of the ground terminal is positioned Between two adjacent pairs of signal terminal connecting parts, wherein, the tail end of each signal terminal is soldered and fixed on a surface of the circuit board, and the ground terminal has at least one tail end passing through the surface of the circuit board and soldered fixed.

According to an embodiment of the present invention, each single connection portion of the ground terminal is connected with a plurality of butt ends.

According to another embodiment, each single connection portion of the ground terminal is connected with a plurality of tails.

According to another embodiment, each single connection portion of the ground terminal is connected with a plurality of butt ends and a plurality of tail ends.

According to another embodiment, the insulating housing has a plurality of insulators, and each of the insulators respectively fixes the connection portions of at least one pair of signal terminals and at least one ground terminal.

According to another embodiment, a single insulator is fixed with an even number of signal terminal connection parts.

According to another embodiment, the insulating housing is positioned with a plurality of signal terminals and a plurality of ground terminals, so that the connector can simultaneously transmit high-frequency electronic signals with two mating connectors respectively.

The beneficial effects of the utility model are: the connector structure proposed by the utility model does not use a press-fit terminal, which is used to avoid the technical problems of the press-fit terminal (circuit board circuit layout problem and insufficient connector holding force) ); Therefore, in principle, surface mount technology (SMT, Surface Mount Technology) terminals are used to overcome circuit board layout problems, while grounding terminals are exceptionally used through holes (through holes) terminals to overcome electromagnetic interference (EMI, Electromagnetic Interference) problems. The utility model does not use the fixed (press-fit) terminals of the prior art as a whole, so there will be no circuit board circuit layout problems and insufficient connector holding force problems

In order to make the description of the utility model clearer, the following detailed description of a preferred embodiment enables those skilled in the art to implement the utility model.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Figure 2 is an exploded view of Figure 1.

Figure 3 is an enlarged view of the arrangement sequence of the terminals in Figure 2.

FIG. 4 is a schematic diagram of a pair of insulators for fixing signal terminals and an insulator for fixing ground terminals in FIG. 3 .

FIG. 5 is a schematic diagram of each signal terminal and each ground terminal after removing each insulator in FIG. 4 .

Fig. 6 is a schematic diagram of the contacts on the circuit board suitable for installing the connector shown in Fig. 1 .

Fig. 7 shows the connector structure disclosed in the prior art, US Pat. No. 8,465,302.

Wherein, the reference signs are explained as follows:

A Insulation housing

B signal terminal

B1 butt end

B2 connection part

B3 end

B31 perforated

1 Insulation housing

11 interface

12 frame

13 insulator

2 signal terminals

21 butt end

22 connection part

23 Tail end

3 ground terminal

31 butt end

32 connection part

33 Tail end

4 circuit board

41 contacts

42 through holes

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, as disclosed in the prior art, the connector proposed in the preferred embodiment of the present invention is a double stacked connector as an example, the connector In order to have two connection ports, that is, the connector proposed in the preferred embodiment can be mated with two mutually independent docking connectors (not shown in the drawings), so as to facilitate comparison with the prior art. Those skilled in the art can apply this technology to a single connection port or other applications according to the content described in this embodiment.

The connector proposed by the utility model is mainly composed of an insulating shell 1 , a frame 12 , a plurality of signal terminals 2 and a plurality of ground terminals 3 . One surface of the insulating housing 1 is provided with two interfaces 11 for insertion and mating of the butt connector, because this embodiment takes a double-layer laminated connector as an example. In this embodiment, the frame 11 is assembled on the insulative housing 1 without the docking port 11, so that the insulative housing 1 and the frame 12 jointly define a space for accommodating the signal terminals 2 and each of the Ground 3 terminals.

As shown in FIG. 4 , FIG. 5 and FIG. 6 , each signal terminal 2 of this embodiment has a pair of connecting ends 21 , a connecting portion 22 and a tail end 23 respectively. The mating end 21 of each signal terminal 2 is used to form a mechanical contact with a mating connector (not shown in the drawings), so that the connector can exchange high-frequency electronic signals with the mating connector. The tail end 23 of each signal terminal 2 is soldered to a circuit board 4 , so that each signal terminal 2 is electrically connected to an appropriate circuit (not shown in the drawings) on the circuit board 4 . The connection portion 22 of each signal terminal 2 is respectively connected to the butt end 21 and the tail end 23 of the individual signal terminal 2 .

In this embodiment, the connection portions 22 of every four signal terminals 2 are positioned together by an insulator 13 , so that the butt ends 21 and tail ends 23 of every four signal terminals 2 are arranged in the same line. This is because this embodiment takes a double-layer laminated connector with two interfaces 11 as an example, and in this embodiment, the opposite two surfaces of each interface 11 are respectively arranged with a signal terminal 2 butt end 21, so in this embodiment In the description of the example, the connection parts 22 of the four signal terminals 2 are fixed by a single insulator 13 . Those skilled in the art can make changes according to actual needs. These changes include not needing to fix each of the signal terminals 2 to any insulator 13, but instead directly positioning the individual signal terminals 2 at appropriate positions of the aforementioned insulating housing 1, or For the application of a single-layer connector, the single insulator 13 only needs to fix the connecting portions 22 of the two signal terminals 2 .

In this embodiment, each single grounding terminal 3 is connected to four butt ends 31 and four tail ends 33 with one connecting portion 32, which is mainly because this embodiment is for a double-layer laminated connector, and based on the adjacent Considering that the signal terminals 2 of each ground terminal 3 provide a better electromagnetic wave isolation effect, the technology proposed by the present invention is not limited to each ground terminal 3 having four butt ends 31 and four tail ends 33 . Since in this embodiment, each ground terminal 3 has four butt ends 31 and four tail ends 33 arranged in a straight line, an insulator 13 is used to fix a ground terminal 3 in this embodiment. However, those skilled in the art can still make changes according to actual needs.

Since the general transmission of high-frequency electronic signals adopts differential mode transmission, that is, a group of differential mode high-frequency electronic signals is transmitted by paired signal terminals 2, so in this embodiment, the grounding terminal 3 is arranged on the adjacent An insulator 13 with a ground terminal 3 is located between two pairs of signal terminals 2 and between two pairs of insulators 13 respectively fixing four signal terminals 2 , so as to isolate mutual electromagnetic interference between adjacent pairs of signal terminals 2 .

In the present embodiment, the tail ends 23 of each of the signal terminals 2 are suitable for being soldered to individual contacts 41 on the surface of a circuit board 4 by utilizing surface mount technology (Surface Mounting Technology, SMT); The end 33 is designed to be welded with a plurality of through holes 42 on the circuit board 4 . Since the circuit board 4 does not need to provide through holes 42 for the welding ends 23 of the signal terminals 2, it is beneficial to the layout of the high-frequency electronic circuit wires on the circuit board 4, especially when the circuit board 4 is a multilayer circuit board. , the circuit wires of each layer do not need to avoid the position of the tail end 23 of each signal terminal 2 .

In the description of this embodiment, the tail end 33 of each ground terminal 3 is soldered to the circuit board 4 after passing through the through hole 42 on the circuit board 4. This is because the high-frequency electromagnetic wave is released radially to the environment, so it is Provide better electromagnetic isolation protection for the signal terminal 2, so that the tail end 33 of each ground terminal 3 is elongated to penetrate the circuit board 4, and the tail end 33 of each ground terminal 3 can be connected to the circuit board 3 at the shortest distance. The grounding circuit wire (not shown in the drawings) is connected so that the grounding circuit wire can be connected to the tail ends 33 of the grounding terminals 3 without being extended to the surface of the circuit board 4 .

Although in the description of Fig. 2 and Fig. 3, a grounding terminal 3 is installed between two pairs of signal terminals 2 for transmitting differential electronic signals; those skilled in the art can fix the outermost insulator 13 in Fig. The signal terminal 2 of the signal is changed to the ground terminal 3.

The description of the preferred embodiments of the present utility model is not intended to limit the present utility model. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the present utility model The scope of protection should be determined by the scope of the appended claims.

Claims (7)

1. a connector construction, this connector is suitable for being fixed in a circuit board, and this connector can between a butt connector and this circuit board carry high frequency electronic signal, this connector comprises an insulation shell, multiple signal terminal and at least one earth terminal, this insulation shell is the position being used to fixing respectively this signal terminal and this earth terminal, the plurality of signal terminal transmits one group of differential electronic signal by paired signal terminal, respectively this signal terminal and this earth terminal have a butt end respectively, a junction and a tail end, respectively this signal terminal and earth terminal butt end can form Mechanical Contact with this butt connector, respectively this signal terminal and this earth terminal tail end are used to be formed with this circuit board be electrically connected, respectively this signal terminal and this earth terminal connecting portion connect respectively this butt end and tail end respectively, and the connecting portion of this earth terminal is located between adjacent two pairs of signal terminal connecting portions, it is characterized in that: respectively the tail end of this signal terminal is fixedly welded on this circuit board one surface, and this earth terminal at least has a tail end passes through this surface of this circuit board and be welded and fixed.

2. connector construction as claimed in claim 1, it is characterized in that, respectively the singular association portion of this earth terminal is connected with multiple butt end.

3. connector construction as claimed in claim 1, it is characterized in that, respectively the singular association portion of this earth terminal is connected with multiple tail end.

4. connector construction as claimed in claim 1, it is characterized in that, respectively the singular association portion of this earth terminal is connected with multiple butt end and multiple tail end.

5. connector construction as claimed in claim 1, it is characterized in that, this insulation shell has multiple insulator, and respectively the connecting portion of at least one pair of signal terminal and at least one earth terminal fixed respectively by this insulator.

6. connector construction as claimed in claim 5, it is characterized in that, single insulating body is fixed with even number signal terminal connecting portion.

7. connector construction as claimed in claim 1, it is characterized in that, this insulation shell is positioned with multiple signal terminal and multiple earth terminal, enables this connector distinguish carry high frequency electronic signals with two butt connectors simultaneously.