Electrical connector

Abstract

The present invention is an electrical connector, comprising an insulating body, a plurality of terminals, a first shell and a second shell. The terminals are arranged on the insulating body. The first shell is sleeved on the insulating body to form an interface, and the interface is suitable for docking with another electrical connector. The first shell has a first pin adjacent to the interface. The second shell is sleeved outside the first shell, wherein the first pin extends away from the insulating body and passes through the second shell.

Description

Technical Field

[0001] The invention relates to an electric connector. Background Art

[0002] As the amount of data transmitted between most electronic devices continues to increase, in order to provide users with a more user-friendly experience, the speed of signal transmission between most electronic devices has increased accordingly. Electrical connectors are a bridge for electronic signal communication between different electronic devices, and therefore are frequently used in various electronic devices in response to the above situation.

[0003] However, as electronic devices are becoming increasingly smaller, the overall size of electrical connectors is also being miniaturized. This affects the structural stability of the electrical connector package on the circuit board, which is prone to gradually decrease as the number of times the electrical connector is used (mating and plugging) increases.

[0004] It is known that Chinese patent CN104901060 provides a socket connector, in which a tongue plate of an insulating body is surrounded by a shielding shell, and then a metal cover is fixed to the outside of the shielding shell, and the socket connector is supported on the circuit board by the supporting feet of the metal cover. However, in terms of the connection structure between the socket connector and the circuit board, it is actually assembled from the inside out in a stacking form, that is, it can only rely on the structural connection ability between the insulating body, the shielding shell, the metal cover and the adjacent two of the circuit board, and cannot provide additional structural strength guarantee. Therefore, this stacking assembly method still has a certain degree of separation risk.

[0005] Therefore, how to effectively improve the structural strength of the electrical connector configured on the circuit board under the above trend is a problem that relevant technicians need to consider and solve. Summary of the invention

[0006] The invention provides an electrical connector, which improves both the structural strength and the appearance integrity of the electrical connector by means of a double-layer shell structure and staggered pins.

[0007] The electrical connector of the present invention comprises an insulating body, a plurality of terminals, a first shell and a second shell. The terminals are arranged on the insulating body. The first shell is sleeved on the insulating body to form an interface, and the interface is suitable for docking with another electrical connector. The first shell has a first pin adjacent to the interface. The second shell is sleeved outside the first shell, wherein the first pin extends away from the insulating body and passes through the second shell.

[0008] Preferably, the first shell further comprises a second pin which is far away from the interface, so that the distance between the first pin and the interface is smaller than the distance between the second pin and the interface.

[0009] Preferably, the electrical connector is adapted to be fixed on a circuit board via the first pin and the second pin, and a portion of the electrical connector is suspended at a notch of the circuit board.

[0010] Preferably, the first pin and the second pin are coplanar.

[0011] Preferably, the second shell has a notch facing away from the interface, and the first pin passes through the notch and extends out of the second shell.

[0012] Preferably, the insulating body is in a stepped structure and has a first step and a second step, the second step being higher than the first step. The first housing is in another stepped structure and has a third step and a fourth step, the fourth step being higher than the third step. The third step surrounds the first step, and the fourth step covers the second step.

[0013] Preferably, the second shell is sleeved outside the first step portion and the third step portion.

[0014] Preferably, the second shell has a bend extending toward the second step portion, and the insulating body further has a connecting portion connected between the first step portion and the second step portion, and a recess located at the bottom surface of the connecting portion, and the bend is held in the recess.

[0015] Preferably, the first shell further has a second pin, the first pin is located at the third step portion, the second pin is located at the fourth step portion, and the first pin and the second pin are coplanar.

[0016] Preferably, the first shell has a hollow portion, the outline of which corresponds to the first pin, and the second shell covers the hollow portion.

[0017] Preferably, the first shell has an opening, and the inner wall surface of the second shell has a snap-fit ​​protrusion, which is snap-fitted to the opening so that the first shell and the second shell are assembled together.

[0018] Preferably, the second shell has a bend, is away from the interface and protrudes from the first shell through the notch of the first shell, so as to be buckled in the recess of the insulating body.

[0019] Based on the above, the electrical connector first sets a first shell on the outside of the insulating body to form an interface, and the first shell has an extended first pin, wherein the first pin is adjacent to the interface, and then a second shell is set outside the first shell so that the first pin can pass through the second shell when extending away from the insulating body. Accordingly, in addition to the second shell being in a nested relationship with the first shell, the structural strength of the electrical connector can be improved by the structural design of the first pin passing through the second shell.

[0020] Furthermore, when the electrical connector is plugged in and out of another electrical connector, the plugging and unplugging force applied by the user will affect the insulating body, the first shell and the second shell at the same time, and the first shell located in the inner layer further passes through and extends out of the second shell located in the outer layer through the first pin. Obviously, the first shell and the second shell can form an interlaced structure, that is, along the plugging and unplugging direction, the insulating body, the first shell and the second shell of the electrical connector can interfere with each other to withstand and effectively resist the plugging and unplugging force applied by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 and Figure 2 They are schematic diagrams of an electrical connector at different viewing angles according to an embodiment of the present invention.

[0022] Figure 3 and Figure 4 They are respectively exploded views of the electrical connector at different viewing angles.

[0023] Figure 5 It is a top view of the electrical connector arranged on the circuit board.

[0024] Figure 6 yes Figure 5 A side view of an electrical connector.

[0025] Explanation of symbols

[0026] 100:Electrical connector

[0027] 110: Insulation body

[0028] 111: First Stage

[0029] 112: Connecting part

[0030] 112a: Depression

[0031] 113: Second Stage

[0032] 120:Terminal

[0033] 130: First shell

[0034] 131: The third stage

[0035] 131a: hollow part

[0036] 131b: Opening

[0037] 131c: Gap

[0038] 132: Wing

[0039] 132a: First pin

[0040] 133: Fourth Stage

[0041] 133a: Second pin

[0042] 133b: Rear side panel

[0043] 140: Second shell

[0044] 141: Gap

[0045] 143: Bend

[0046] 143: Buckle convex point

[0047] 200: Circuit board

[0048] 210: Notch

[0049] A1: Interface. DETAILED DESCRIPTION

[0050] Figure 1 and Figure 2 They are schematic diagrams of an electrical connector according to an embodiment of the present invention at different viewing angles. Figure 1 and Figure 2 In this embodiment, the electrical connector 100 is, for example, a miniaturized USB electrical connector, which includes an insulating body 110, a plurality of terminals 120, a first shell 130, and a second shell 140. The terminals 120 are disposed on the insulating body 110, for example, by means of embedded injection. The first shell 130 is sleeved on the insulating body 110 to form an interface A1, and the interface A1 is suitable for docking with another electrical connector (not shown). The first shell 130 has a first pin 132a adjacent to the interface A1. The second shell 140 is sleeved outside the first shell 130, wherein the first pin 132a extends away from the insulating body 110 and passes through the second shell 140.

[0051] Figure 3 and Figure 4 They are exploded views of the electrical connector from different perspectives. Please also refer to Figure 3 and Figure 4 And compare Figure 1 or Figure 2 In this embodiment, the materials of the first shell 130 and the second shell 140 are both conductive metals. The first shell 130 also has a second pin 133a away from the interface A1, that is, the distance between the first pin 132 and the interface A1 is smaller than the distance between the second pin 133a and the interface A1. For the first shell 130, the first pin 132a is substantially located between the interface A1 and the second pin 133a. Furthermore, the second shell 140 has a notch 141 facing away from the interface A1, and the first pin 132a of the first shell 130 passes through the notch 141 and extends out of the second shell 140.

[0052] In detail, the insulating body 110 is a stepped structure and includes a first step 111, a second step 113 and a connecting portion 112, wherein the second step 113 is higher than the first step 111, and the connecting portion 112 is connected between the first step 111 and the second step 113. Accordingly, the first shell 130 of this embodiment needs to correspond to the insulating body 140 and also have another stepped structure, that is, the first shell 130 is formed into a stepped structure after stamping, bending, etc. with a metal plate, including a third step 131 and a fourth step 133, wherein the fourth step 133 is higher than the third step 131. Here, the second shell 130 is formed from the third step 131 to form wings 132 extending away from each other, and the first pin 132a is the end bending structure of the wing 132. When the first shell 130 is sleeved on the insulating body 110, the third step portion 131 surrounds the first step portion 111, and the fourth step portion 133 covers the second step portion 113, thereby enclosing and clamping the insulating body 110. When the second shell 140 is assembled outside the first shell 130, the second shell 140 is substantially sleeved outside the first step portion 111 and the third step portion 131. Furthermore, when the wing portion 132 is stamped out of the first shell 130, a hollow portion 131a is generated below the wing portion 132, and its contour corresponds to the first pin 132a. After the second shell 140 is sleeved on the third step portion 131, the second shell 140 substantially covers the hollow portion 131a, so that the electrical connector 100 has integrity in appearance.

[0053] In addition, if Figure 4 As shown, the first shell 130 has an opening 131b located at the third step 131, and the inner wall of the second shell 140 has a buckle protrusion 143. The buckle protrusion 143 is inserted into and buckled in the opening 131b so that the first shell 130 and the second shell 140 can be smoothly buckled and assembled together. In the first shell 130 of this embodiment, the fourth step 133 extends from the third step 131 to form a cover body with four bent side panels, such as Figure 4 As shown, in addition to a pair of second pins 133a opposite to each other, the four-sided bent side panels also have a fourth step portion 133 having a rear side panel 133b opposite to the connection between the fourth step portion 133 and the third step portion 131. The cover body covers the second step portion 113 of the insulating body 110 and provides the function of clamping the insulating body 110 and protecting the terminal 120.

[0054] On the other hand, please refer to Figure 4 And compare Figure 2In this embodiment, the second shell 140 has a bend 142, which is away from the interface A1 and protrudes from the third step 131 of the first shell 130 through the notch 131c of the first shell 130. It actually extends from the outside to the inside of the first shell 130, and is then buckled in the recess 112a of the insulating body 110. In other words, the bend 142 extends toward the second step 113 of the insulating body 110, and the bottom surface of the connecting portion 112 of the insulating body 110 has a recess 112a, which is located on the extension path of the bend 143, so that the bend 143 can be smoothly inserted and buckled in the recess 112a, thereby further providing the insulating body 110 and the second shell 140 with a resistance and tolerance sufficient to resist the aforementioned plugging and unplugging force.

[0055] Figure 5 It is a top view of the electrical connector arranged on the circuit board. Figure 6 yes Figure 5 Please also refer to the side view of the electrical connector. Figure 5 and Figure 6 In this embodiment, the electrical connector 100 is suitable for being fixed to the circuit board 200 through the first pin 132a and the second pin 133a, and a part of the electrical connector 100 is suspended at the notch 210 of the circuit board 200 to form a sunken type electrical connector. Accordingly, although the first housing 130 presents a stepped structure, the first pin 132a located at the third step 131 and the second pin 133a located at the fourth step 133 are still in a coplanar state, so as to facilitate insertion on the same surface of the circuit board 200 without changing the structural design of the circuit board 200.

[0056] In summary, in the above-mentioned embodiment of the present invention, the electrical connector is first sleeved with a first shell outside the insulating body to form an interface, and the first shell has an extended first pin, wherein the first pin is adjacent to the interface, and then a second shell is sleeved outside the first shell so that the first pin can pass through the second shell when extending away from the insulating body. Accordingly, in addition to being in a stacked relationship with the first shell, the second shell can also improve the structural strength of the electrical connector by the structural design of the first pin passing through the second shell. When the electrical connector is plugged and unplugged with another electrical connector, the plugging and unplugging force applied by the user will affect the insulating body, the first shell and the second shell at the same time, and the first shell located in the inner layer further passes through and extends out of the second shell located in the outer layer through the first pin. Obviously, the first shell and the second shell can form a staggered structure, that is, along the plugging and unplugging direction, the insulating body, the first shell and the second shell of the electrical connector can interfere with each other.

[0057] Accordingly, the first shell and the second shell form a double-layer shell structure outside the insulating body, and the first pin further forms a staggered pin structure of the electrical connector with the second shell, and any two of the insulating body, the first shell and the second shell are in a state of mutual locking or structural interference. This will help to strengthen the connection strength between the components and improve the tolerance of the electrical connector during plugging and unplugging to resist the plugging and unplugging force applied by the user. At the same time, the first shell and the second shell also have the ability to provide better electromagnetic shielding effect when the electrical connector is transmitting signals.

Claims

1. An electrical connector, characterized in that: an insulating body; A plurality of terminals are arranged on the insulating body; A first shell, sleeved on the insulating body to form an interface, the interface is suitable for docking with another electrical connector, the first shell has a first pin, adjacent to the interface, wherein the first shell is punched out to form wings extending away from each other, and the first pin is the end bending structure of the wing, and the first shell will produce a hollow portion located below the wing when punching out the wing, and its contour corresponds to the first pin; as well as A second shell is sleeved outside the first shell, the second shell covers the hollow portion, wherein the first pin extends away from the insulating body and passes through the second shell, wherein the second shell has a notch facing away from the interface, and the first pin passes through the notch and extends out of the second shell.

2. The electrical connector according to claim 1, characterized in that: The first shell also has a second pin far away from the interface, so that the distance between the first pin and the interface is smaller than the distance between the second pin and the interface.

3. The electrical connector according to claim 2, wherein: The electrical connector is suitable for being fixed on a circuit board through the first pin and the second pin, and a part of the electrical connector is suspended at a notch of the circuit board.

4. The electrical connector according to claim 2, wherein: The first pin and the second pin are coplanar.

5. The electrical connector according to claim 1, characterized in that: The insulating body has a stepped structure and has a first step and a second step, the second step is higher than the first step, the first shell has another stepped structure and has a third step and a fourth step, the fourth step is higher than the third step, the third step surrounds the first step, and the fourth step covers the second step.

6. The electrical connector according to claim 5, characterized in that: The second shell is sleeved outside the first step portion and the third step portion.

7. The electrical connector according to claim 6, characterized in that: The second shell has a bend extending toward the second step portion, and the insulating body further has a connecting portion connected between the first step portion and the second step portion, and a recess located on the bottom surface of the connecting portion, and the bend is held in the recess.

8. The electrical connector according to claim 5, characterized in that: The first shell further has a second pin, the first pin is located at the third step portion, the second pin is located at the fourth step portion, and the first pin and the second pin are coplanar.

9. The electrical connector according to claim 1, wherein: The first shell has an opening, and the inner wall surface of the second shell has a buckle protrusion, and the buckle protrusion is buckled in the opening so that the first shell and the second shell are assembled together.

10. The electrical connector according to claim 1, wherein: The second shell has a bend, is away from the interface and protrudes from the first shell through a notch of the first shell, so as to be buckled in a recess of the insulating body.

Images