CN217882031U - Electrical connector with improved contact arrangement - Google Patents

Abstract

The utility model relates to an electric connector, including insulator, a plurality of terminal, first casing and sealing washer. The terminal is disposed on the insulator. The first housing is assembled to the insulator and surrounds the insulator and the terminal. The outer wall area of first casing is divided into first district and the second district that is different each other, and the surface in second district is provided with the cladding material. The surface of the first area is the raw material surface of the first shell. The sealing ring is arranged in the first area.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector.

Background

With the continuous progress of information technology, in order to improve the performance of computers or digital electronic products, functions can be expanded by connecting various electronic devices, and usually an electrical connector is installed on the computer or the electronic product to connect with the external electronic device.

A Universal Serial Bus (USB) interface is a standard input/output interface, and has been widely used in many electronic products to realize mutual transmission between signals. Due to different use environments of products, different products have different performance requirements on the electric connector, such as special requirements on water resistance, dust resistance and the like, and the electric connector tends to be miniaturized, so that the requirements on structural strength and stability of the electric connector are increased.

Disclosure of Invention

The utility model provides an electric connector, whether the outer wall of its first casing passes through cladding material and can stabilize the configuration sealing washer.

The utility model discloses an electric connector, including insulator, a plurality of terminal, first casing and sealing washer. The terminal is disposed on the insulator. The first housing is assembled to the insulator and surrounds the insulator and the terminal. The outer wall area of first casing is divided into first district and the second district that is different each other, and the surface in second district is provided with the cladding material. The surface of the first area is the raw material surface of the first shell. The sealing ring is arranged in the first area.

Preferably, the first housing has a pair of first pins located on two opposite sides of the insulator for being soldered to the circuit board.

Preferably, the first housing is a Metal Injection Molding (MIM) housing.

Preferably, the plating layer is a plating layer containing tin, nickel, or gold.

Preferably, the first region surrounds the interface of the first housing, the second region is far away from the interface, and the electrical connector is butted with another electrical connector through the interface.

Preferably, the sealing ring is a liquid silicone rubber injection molding (LIM) ring.

Preferably, the insulator includes a base and a tongue extending from the base. The part of the base is assembled in the first shell, and the tongue part is arranged in the first shell in a penetrating way.

Preferably, the electrical connector further comprises a second housing assembled to and covering another part of the base. The part is connected between the tongue and the other part.

Preferably, the second housing has a pair of second pins located on two opposite sides of the other part for being soldered on the circuit board.

Preferably, the second housing is a press-bent housing.

Based on the above, the electrical connector is used to surround and accommodate the first shell of the insulator and the terminal, and the outer wall of the electrical connector is divided into the first area and the second area which are adjacent and different from each other, wherein the surface of the second area is provided with the plating layer, and the surface of the first area is the original surface of the first shell and is not provided with the plating layer. Accordingly, the sealing ring can be disposed in the first region to effectively bond the first housing, i.e., because there is no plating layer, the plating layer is prevented from reducing the bonding force between the sealing ring and the first housing, and thus the tolerance of the sealing ring and the overall structural strength of the electrical connector are improved.

Drawings

Fig. 1 is a schematic diagram of an electrical connector according to an embodiment of the present invention.

Fig. 2 is a schematic view of the electrical connector of fig. 1 from another perspective.

Fig. 3 is an exploded schematic view of the electrical connector of fig. 1.

Fig. 4 is a side view of the electrical connector of fig. 1 disposed on a circuit board.

Description of the symbols

100 electric connector

110 first shell

111 interface

112 first pin

113 convex rib

120: second housing

121: second pin

122 opening (c)

130: sealing ring

140 insulating body

141 snap convex part

150 terminal

160 shielding sheet

170 circuit board

A1: base

A11, A12 local

A2 tongue part

C1 coating

W1 first region

W2 second region

X-Y-Z is a rectangular coordinate.

Detailed Description

Fig. 1 is a schematic diagram of an electrical connector according to an embodiment of the present invention. Fig. 2 is a schematic view of the electrical connector of fig. 1 from another perspective. Fig. 3 is an exploded schematic view of the electrical connector of fig. 1. Cartesian coordinates X-Y-Z are provided herein to facilitate component description. Referring to fig. 1 to fig. 3, in the present embodiment, the electrical connector 100 includes an insulator 140, a plurality of terminals 150, a first housing 110 and a sealing ring 130. The terminal 150 is disposed on the insulator 140. The first housing 110 is assembled to the insulator 140 and surrounds the insulator 140 and the terminal 150. The outer wall of the first casing 110 is divided into a first area W1 and a second area W2 which are different from each other, and the surface of the second area W2 is provided with a plating layer C1. The surface of the first area W1 is the raw material surface of the first housing 110 and is not provided with the plating layer C1. The sealing ring 130 is disposed in the first region W1. Here, the sealing ring 130 is a liquid silicone rubber injection molding (LIM) ring, that is, after the first housing 110 is completed, the liquid silicone rubber is molded in the first area W1 of the first housing 110 by an injection molding process to form the sealing ring 130. It should be noted that the dotted line beside the plating layer C1 shown in fig. 3 is only used as a partition between the first region W1 and the second region W2, and does not mean that the dotted line pattern exists on the surface of the outer wall.

Here, the sealing ring 130 is located at the interface 111 of the first housing 110, and actually, the electrical connector 100 is, for example, a socket electrical connector, and is suitable for being disposed in a body of an electronic device, so that the sealing ring 130 is also installed in the body along with the electrical connector 100 and is tightly pressed with the body structure to generate a waterproof or dustproof effect, so as to ensure that moisture or foreign matter cannot enter the body through the electrical connector 100.

Further, the first housing 110 of the present embodiment is a Metal Injection Molding (MIM) housing, and the interface 111 is a joint of the first housing 110 and another electrical connector (not shown). The first area W1 surrounds the interface 111 of the first housing 110, and the second area W2 is far away from the interface 111. The insulator 140 includes a base A1 and a tongue portion A2 extending from the base A1, a portion of the base A1 is assembled in the first housing 110 and stopped by the rib 113 of the first housing 110, and the tongue portion A2 penetrates through the first housing 110 and partially protrudes from the interface 111. In another embodiment, not shown, the first housing 110 can also be made by stamping, bending or drawing a metal plate.

In the present embodiment, the electrical connector 100 further includes a shielding plate 160, which is combined with the insulator 140 by insert molding (insert molding) together with the terminals 150, wherein the shielding plate 160 divides the terminals 150 into two groups, i.e. the two groups of terminals 150 are disposed up and down relative to the shielding plate 160 along the Z-axis. Meanwhile, the terminals 150 of the present embodiment are arranged in a state opposite to each other along the electrical pins (pin alignment) of the X axis, except for the above configuration. Briefly, referring to fig. 3 as an example, when the terminals 150 located above the shielding plate 160 are arranged in the positive X-axis direction (for example, pin1, pin2, \ 8230; pin12, in sequence from right to left), the terminals 150 located below the shielding plate 160 are arranged in the negative X-axis direction (for example, pin12, pin11, \ 8230; pin1, in sequence from right to left), so that another electrical connector can be smoothly mated with the electrical connector 100 regardless of the positive insertion method or the reverse insertion method, and the application range of the electrical connector 100 can be increased.

Furthermore, the base A1 is divided along the Y axis into two parts a11, a12, wherein the part a11 is connected between the tongue A2 and the part a 12. The electrical connector 100 further includes a second housing 120, which is formed by punching, bending or drawing a metal plate. In the embodiment, the second shell 120 has an opening 122, and the portion a12 of the base portion A1 of the insulator 140 has a snap projection 141, so that when the second shell 120 covers the portion a12, the snap projection 141 is snapped into the opening 122, thereby completing the assembly of the second shell 120 and the insulator 140. Here, the terminals 150 each extend substantially from the portion a12, and extend to the tongue portion A2 after passing through the portion a 11. In other words, the terminals 150 each have a soldering terminal and a mating terminal, wherein the soldering terminal protrudes from the portion a12, as shown in fig. 2, and is used for soldering with a pad of a circuit board 170 (shown in fig. 4), and the mating terminal is exposed from the tongue portion A2 for mating with a terminal of the other electrical connector.

Fig. 4 is a side view of the electrical connector of fig. 1 disposed on a circuit board. Referring to fig. 3 and fig. 4, in the present embodiment, the electrical connector 100 is, for example, a socket electrical connector, and is suitable for being disposed on a circuit board (e.g., the circuit board 170 shown in fig. 4) in an electronic device. To achieve the above-mentioned effect, the first casing 110 of the present embodiment further has a pair of first pins 112 located at two opposite sides of the body of the first casing 110 along the X axis, and the first pins 112 are used for inserting the circuit board 170 and being soldered to obtain an electrical connection relationship. Meanwhile, the second housing 120 of the present embodiment also has two second pins 121 disposed along the X axis, which are also used for inserting and soldering the circuit board 170 to obtain an electrical connection relationship. In the embodiment, the first pins 112 are substantially located on two opposite sides of the portion a11 along the X axis, and the second pins 121 are substantially located on two opposite sides of the portion a12 along the X axis.

As shown in fig. 4, the first casing 110 is supported and stably fixed on the circuit board 170 by the first pins 112, the second casing 120 by the second pins 121, and the first pins 112 and the second pins 121 are substantially located on the same plane. More importantly, for the first casing 110, the first leads 112 are located in the second area W2, in other words, the surface of the first leads 112 also has a plating layer C1, and particularly a plating layer containing tin, nickel or gold, which is beneficial for the soldering between the first leads 112 and the circuit board 170. Similarly, the second housing 120 may have a plated layer on its surface to facilitate the soldering between the second pins 121 and the circuit board 170. In another embodiment (not shown), the first housing may be provided with a plating layer made of other materials in the second area W2 according to other requirements (such as appearance or visual effect), but similarly, the first area W1 still maintains the original surface and has no plating layer due to the need of forming the sealing ring 130.

In summary, in the above embodiments of the present invention, the electrical connector is used to surround and accommodate the first housing of the insulator and the terminal, and the outer wall thereof is divided into the first region and the second region which are adjacent to each other and different from each other, wherein the surface of the second region is provided with the plating layer, and the surface of the first region is not provided with the plating layer. Accordingly, the sealing ring can be disposed in the first region to effectively bond the first housing, i.e., due to the absence of the plating layer, thereby preventing the plating layer from reducing the bonding force between the sealing ring and the first housing, and thus improving the tolerance of the sealing ring and the overall structural strength of the electrical connector. Meanwhile, the first pin for welding the first shell and the circuit board is positioned in the second area, namely, a coating exists on the surface of the first pin, so that the welding of the first pin and the circuit board is facilitated.

Claims (10)

1. An electrical connector, comprising:

an insulator;

a plurality of terminals disposed on the insulator;

a first housing assembled to the insulator and surrounding the insulator and the plurality of terminals, wherein an outer wall of the first housing is divided into a first region and a second region which are adjacent to each other and different from each other, a plating layer is disposed on a surface of the second region, and a surface of the first region is a raw material surface of the first housing; and

and the sealing ring is configured in the first area.

2. The electrical connector of claim 1, wherein the first housing has a pair of first pins on opposite sides of the insulator, and the first pins are located in the first region and are soldered to a circuit board.

3. The electrical connector of claim 1, wherein the first housing is a metal injection molded housing.

4. The electrical connector of claim 1, wherein the plating is a plating comprising tin, nickel, or gold.

5. The electrical connector of claim 1, wherein the first region surrounds the first housing near the interface and the second region is remote from the interface through which the electrical connector is mated with another electrical connector.

6. The electrical connector of claim 1, wherein the sealing ring is a liquid injection molded silicone ring.

7. The electrical connector of claim 1, wherein the insulator includes a base and a tongue extending from the base, a portion of the base being assembled within the first housing, the tongue being disposed through the first housing.

8. The electrical connector of claim 7, further comprising a second housing assembled to and covering another portion of the base, the portion being connected between the tongue portion and the other portion.

9. The electrical connector of claim 8, wherein the second housing has a pair of second pins on opposite sides of the other portion for soldering to the circuit board.

10. The electrical connector of claim 8, wherein the second housing is a stamped and bent housing.

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