CN214797993U

CN214797993U - Electrical connector

Info

Publication number: CN214797993U
Application number: CN202120581492.3U
Authority: CN
Inventors: 徐红强; 许立军
Original assignee: Dongguan Leader Precision Industry Co Ltd
Current assignee: Dongguan Leader Precision Industry Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-19
Anticipated expiration: 2031-03-22

Abstract

An electrical connector for mounting on a circuit board, the electrical connector comprising: the insulating body comprises a base and a tongue plate protruding out of the base; the conductive terminals comprise butting parts exposed out of the tongue plates and tail parts used for being fixed on the circuit board; an inner metal shell including a mating space surrounding the tongue plate, the mating space for receiving a mating connector in a mating direction; and the outer metal shell is fixedly connected with the inner metal shell and comprises a mounting pin for fixing the circuit board. The inner metal shell or the outer metal shell comprises a stopping projection which protrudes into the butting space and is used for stopping the butting connector from being excessively inserted. By the arrangement, the impact of the insertion force of the butting connector on the tail part is reduced, and the reliability of the electric connector is improved.

Description

Electrical connector

Technical Field

The utility model relates to an electric connector belongs to connector technical field.

Background

CN212114061U discloses a conventional electrical connector, which includes an insulating housing, a plurality of conductive terminals fixed on the insulating housing, a shielding ring wrapped and covered on the insulating housing, an inner metal shell sleeved on the insulating housing, and an outer metal shell fixed with the inner metal shell. The conductive terminal comprises a plurality of welding pins which are fixedly welded on the circuit board. The insulator body includes a base and a tongue plate extending from the base. The shield ring includes a front end portion covering a part of the tongue plate, a rear end portion covering a part of the base portion, and a stepped portion connecting the front end portion and the rear end portion. When the butting connector is inserted, the tail end of the butting connector is very close to the step part. In some cases, when the insertion depth of the counterpart connector exceeds a set value (i.e., "over-insertion"), the counterpart connector may apply a pushing force to the stepped portion of the shielding ring. Because the shielding ring, the insulating body and the conductive terminal are integrated, the pushing force is inevitably transmitted to the welding position of the welding pin of the conductive terminal and the circuit board, which is easy to cause impact on the welding position, resulting in poor contact.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a higher electric connector of reliability.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electrical connector for mounting on a circuit board, the electrical connector comprising:

the insulating body comprises a base and a tongue plate protruding out of the base;

the conductive terminals comprise butting parts exposed out of the tongue plates and tail parts used for being fixed on the circuit board;

an inner metal shell including a mating space surrounding the tongue plate, the mating space for receiving a mating connector in a mating direction; and

the outer metal shell is fixedly connected with the inner metal shell and comprises a mounting pin for being fixed on the circuit board;

the inner metal shell or the outer metal shell comprises a stopping projection which protrudes into the butting space and is used for stopping the butting connector from being excessively inserted.

As a further improved technical solution of the present invention, the inner metal shell includes a first wall portion and a second wall portion opposite to the first wall portion, the stop protrusion includes a first stop protrusion formed by stamping in the docking space from the first wall portion and a second stop protrusion formed by stamping in the docking space from the second wall portion.

As a further improved technical solution of the present invention, the two first stopping protrusions are arranged in alignment and spaced along a transverse direction perpendicular to the butt joint direction; the two second stopping bulges are arranged along the transverse direction in an aligned mode at intervals.

As a further improved technical scheme of the utility model, the inner metal casing with outer metal casing is equipped with the buckle arch and the buckle recess of mutually supporting.

As a further improved technical scheme of the utility model, the buckle arch is located interior metal casing, the buckle recess is located outer metal casing.

As the utility model discloses further modified technical scheme, outer metal casing includes the roof and respectively certainly the lateral wall that the both sides downwardly bending of roof formed, the buckle recess is two and forms respectively on the lateral wall, the installation foot is two and just certainly lateral wall downwardly extending forms.

As a further improved technical solution of the present invention, the inner metal shell and the outer metal shell are fixed by spot welding.

As a further improved technical solution of the present invention, the tongue plate includes a first surface and a second surface opposite to the first surface, and the abutting portion includes a first flat abutting portion exposed to the first surface and a second flat abutting portion exposed to the second surface.

As a further improved technical scheme of the utility model, interior metal casing is equipped with and extends into in the butt joint space and be used for with butt joint connector looks butt joint's shell fragment.

As a further improved technical scheme of the utility model, the shell fragment is used for electric connection the metal casing of butting connector, the installation foot of outer metal casing is used for electric connection the ground element of circuit board.

Compared with the prior art, the utility model discloses an interior metal casing or outer metal casing is including protruding income just be used for the backstop in the butt joint space butt joint connector excessively male backstop is protruding, thereby has improved electric connector's reliability.

Drawings

Fig. 1 is a schematic perspective view of the electrical connector of the present invention mounted on a circuit board.

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

Fig. 3 is a perspective view of fig. 2 from another angle.

Fig. 4 is a front view of fig. 2.

Fig. 5 is an exploded perspective view of the electrical connector of the present invention.

Fig. 6 is an exploded perspective view from another angle of fig. 5.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If several embodiments exist, the features of these embodiments may be combined with each other without conflict. When the description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The description set forth below in the exemplary detailed description does not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatus, products, and/or methods consistent with certain aspects of the invention, as recited in the claims of the invention.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in the specification and claims of this application, the singular form of "a", "an", or "the" is intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "back," "up," "down," and the like in the description of the invention are used for convenience of description and are not limited to a particular position or spatial orientation. The word "comprise" or "comprises", and the like, is an open-ended expression meaning that an element that precedes "includes" or "comprising" includes "that the element that follows" includes "or" comprises "and its equivalents, that do not preclude the element that precedes" includes "or" comprising "from also including other elements. If the utility model discloses in appear "a plurality of", its meaning indicates two and more than two.

Referring to fig. 1 to 6, the illustrated embodiment of the present invention discloses an electrical connector 100 for being mounted on a circuit board 200 and for being plugged with a mating connector (not shown). Generally, the mating connector includes an insulating block, a plurality of elastic terminals fixed on the insulating block, and a metal housing surrounding the outer periphery of the elastic terminals. The electrical connector 100 includes an insulating body 1, a plurality of conductive terminals 2 fixed to the insulating body 1, an inner metal shell 3 sleeved on the insulating body 1, and an outer metal shell 4 fixed to the inner metal shell 3. In an embodiment of the present invention, the electrical connector 100 is a USB Type C socket connector. Of course, those skilled in the art will appreciate that in other embodiments, the electrical connector 100 may be other types of electrical connectors, such as an HDMI receptacle connector.

The insulating body 1 comprises a base 11 and a tongue plate 12 protruding out of the base 11. In the illustrated embodiment of the present invention, the tongue plate 12 is integrally extended from the base 11. The thickness of the base 11 is greater than the thickness of the tongue plate 12. The tongue plate 12 includes a first surface 121 and a second surface 122 disposed opposite to the first surface 121.

In an embodiment of the present invention, the conductive terminal 2 is insert-molded in the insulating body 1. The conductive terminals 2 include mating portions 21 for mating with the mating connector and tail portions 22 for soldering to the circuit board 200. The docking portion 21 includes a first flat plate-shaped docking portion 211 exposed to the first surface 121 and a second flat plate-shaped docking portion 212 exposed to the second surface 122. The first flat plate-shaped butting portion 211 and the second flat plate-shaped butting portion 212 are used for contacting with the elastic terminals of the butting connector.

Specifically, in the illustrated embodiment of the present invention, the electrical connector 100 includes an insulating member 6 (see fig. 5 and 6). The conductive terminal 2 is assembled on the insulator 6 or the conductive terminal 2 is embedded and molded on the insulator 6 to form a terminal module. The insulating body 1 is formed on the terminal module in an cladding mode.

The inner metal case 3 is substantially hollow and cylindrical, and includes a first wall portion 31, a second wall portion 32 provided opposite to the first wall portion 31, a first side wall 33 connecting one side of the first wall portion 31 and one side of the second wall portion 32, a second side wall 34 connecting the other side of the first wall portion 31 and the other side of the second wall portion 32, and a butt space 30 surrounded by the first wall portion 31, the first side wall 33, the second wall portion 32, and the second side wall 34. The abutment space 30 surrounds the flap 12. The mating space 30 is configured to receive the mating connector along a mating direction a-a (e.g., a front-to-back direction). In addition, in the illustrated embodiment of the present invention, the second wall portion 32 of the inner metal shell 3 is provided with a plurality of elastic pieces 36 extending into the docking space 30 and configured to abut against the docking connector. Of course, in other embodiments, the elastic sheet 36 may be disposed on the outer metal shell 4. The elastic sheet 36 can abut against the butting connector to improve the plugging force. In some embodiments, the elastic sheet 36 is used to contact with the metal housing of the mating connector to improve the grounding shielding effect.

In the illustrated embodiment of the present invention, the outer metal shell 4 is substantially in the shape of an inverted U, and includes a top wall 41, side walls 42 respectively formed by bending both sides of the top wall 41 downward, and a plurality of mounting legs 43 respectively formed by extending the side walls 42 downward. The mounting feet 43 are used to be fixed to the circuit board 200 to resist external force. In the illustrated embodiment of the present invention, the inner metal shell 3 is not provided with fixing pins for fixing to the circuit board 200, so as to save cost. In some embodiments, the mounting leg 43 of the outer metal housing 4 is also used to electrically connect to the ground element of the circuit board 200. For example, the circuit board 200 is provided with a ground line, and the mounting pins 43 are inserted into insertion holes of the circuit board 200 and soldered to contacts at one end of the ground line.

The outer metal shell 4 is fixedly connected with the inner metal shell 3. The inner metal shell 3 and the outer metal shell 4 are provided with a snap projection 35 and a snap groove 45 which are matched with each other. In the illustrated embodiment of the present invention, the snap protrusions 35 are disposed on the inner metal shell 3, and the snap grooves 45 are disposed on the outer metal shell 4. Of course, in other embodiments, the snap protrusions 35 may be provided on the outer metal shell 4, and the snap grooves 45 may be provided on the inner metal shell 3. In the illustrated embodiment of the present invention, the two snap grooves 45 are formed on the side wall 42 of the outer metal shell 4, and the two snap grooves 45 are formed on the first side wall 33 and the second side wall 34 of the inner metal shell 3.

In addition, in order to enhance the fixing effect, the inner metal shell 3 and the outer metal shell 4 are fixed by welding (e.g., spot welding). Specifically, the top wall 41 of the outer metal shell 4 is fixed to the first wall 31 of the inner metal shell 3 by spot welding, one side wall 42 (e.g., left side wall) of the outer metal shell 4 is fixed to the first side wall 33 of the inner metal shell 3 by spot welding, and the other side wall 42 (e.g., right side wall) of the outer metal shell 4 is fixed to the second side wall 34 of the inner metal shell 3 by spot welding. Of course, those skilled in the art can understand that the spot welding positions of the inner metal shell 3 and the outer metal shell 4 can be flexibly adjusted according to the needs, and the present invention is not limited thereto.

In some embodiments, the inner metal shell 3 includes a stopping protrusion 5 protruding into the mating space 30 and used for stopping the over-insertion of the mating connector. In the illustrated embodiment of the present invention, the stopping protrusion 5 includes a first stopping protrusion 51 formed by punching from the first wall 31 into the docking space 30 and a second stopping protrusion 52 formed by punching from the second wall 32 into the docking space 30. The first catching projections 51 are two and are spaced and aligned along a lateral direction B-B (e.g., a left-right direction) perpendicular to the mating direction a-a. The second stopping projections 52 are two and are spaced and aligned along the transverse direction B-B. The first and second stopping

protrusions

51 and 52 are located at the rear end of the docking space 30. When the mating connector is inserted into the mating space 30, the first stopping protrusion 51 and the second stopping protrusion 52 can limit the mating connector. In an embodiment of the present invention, the first stopping protrusion 51 and the second stopping protrusion 52 can contact with the end of the metal shell of the butting connector, thereby improving the grounding shielding effect. In some embodiments, the stopping protrusion 5 may be disposed on the outer metal housing 4, and the stopping protrusion 5 is punched from the outer metal housing 4 into the abutting space 30. For example, the inner metal shell 3 is provided with an opening, and the stop projection 5 extends from the outer metal shell 4 through a corresponding opening of the inner metal shell 3 into the docking space 30.

Compared with the prior art, the electrical connector 100 does not need to be provided with a shielding ring covering the insulating body 1. Accordingly, the grounding function of the shielding ring in the prior art is realized by the elastic sheet 36 in the present invention. The utility model discloses a quantity of part has been reduced to this kind of design, has simplified the processing procedure to the cost has been saved.

When the mating connector is inserted into the mating space 30, the first stopping protrusion 51 and the second stopping protrusion 52 can limit the mating connector. The insertion force applied by the mating connector is transmitted to the inner metal housing 3 through the first stopping projection 51 and/or the second stopping projection 52, then to the outer metal housing 4, and finally to the circuit board 200 through the mounting leg 43. With such an arrangement, the tail portions 22 of the conductive terminals 2 are prevented from being impacted by the insertion force applied by the butting connector, and the reliability of the electrical connector 100 is improved. Moreover, the inner metal shell 3 is electrically connected to the metal shell of the butting connector through the elastic sheet 36, so that a good shielding effect is achieved. The inner metal shell 3 can also be electrically connected to the ground line of the circuit board 200 through the mounting pin 43 of the outer metal shell 4, so as to enhance the shielding effect.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present invention should be based on the technical personnel in the technical field, although the present specification has been described in detail with reference to the above embodiments, however, the skilled in the art should understand that the technical personnel in the technical field can still modify the present invention or substitute the same, and all technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An electrical connector for mounting on a circuit board (200), the electrical connector comprising:

an insulating body (1), wherein the insulating body (1) comprises a base (11) and a tongue plate (12) protruding out of the base (11);

the conductive terminals (2) comprise butting parts (21) exposed out of the tongue plates (12) and tail parts (22) used for being fixed on the circuit board (200);

characterized in that, the electric connector still includes:

an inner metal housing (3), the inner metal housing (3) comprising a docking space (30) surrounding the tongue plate (12), the docking space (30) being adapted to receive a docking connector in a docking direction (A-A); and

the outer metal shell (4), the outer metal shell (4) and the inner metal shell (3) are fixedly connected, and the outer metal shell (4) comprises a mounting pin (43) used for being fixed on the circuit board (200);

the inner metal housing (3) or the outer metal housing (4) comprises a stop projection (5) which projects into the mating space (30) and is used to stop the over-insertion of the mating connector.

2. The electrical connector of claim 1, wherein: the inner metal shell (3) comprises a first wall portion (31) and a second wall portion (32) opposite to the first wall portion (31), and the stopping protrusion (5) comprises a first stopping protrusion (51) formed by punching from the first wall portion (31) into the butting space (30) and a second stopping protrusion (52) formed by punching from the second wall portion (32) into the butting space (30).

3. The electrical connector of claim 2, wherein: the first stop projections (51) are two and are arranged in alignment and spaced along a transverse direction (B-B) perpendicular to the butt joint direction (A-A); the second stop projections (52) are two and are arranged in alignment and spaced along the transverse direction (B-B).

4. The electrical connector of claim 1, wherein: the inner metal shell (3) and the outer metal shell (4) are provided with mutually matched buckling protrusions (35) and buckling grooves (45).

5. The electrical connector of claim 4, wherein: the buckle protrusion (35) is arranged on the inner metal shell (3), and the buckle groove (45) is arranged on the outer metal shell (4).

6. The electrical connector of claim 5, wherein: outer metal casing (4) include roof (41) and respectively certainly lateral wall (42) that the both sides of roof (41) are buckled downwards and are formed, buckle recess (45) are two and are formed respectively on lateral wall (42), installation foot (43) are two and respectively certainly lateral wall (42) downwardly extending forms.

7. The electrical connector of claim 1, wherein: the inner metal shell (3) and the outer metal shell (4) are fixed by spot welding.

8. The electrical connector of claim 1, wherein: the tongue plate (12) comprises a first surface (121) and a second surface (122) arranged opposite to the first surface (121), and the abutment portion (21) comprises a first flat plate-shaped abutment portion (21) exposed to the first surface (121) and a second flat plate-shaped abutment portion (21) exposed to the second surface (122).

9. The electrical connector of any one of claims 1 to 8, wherein: the inner metal shell (3) is provided with an elastic sheet (36) which extends into the butt joint space (30) and is used for abutting against the butt joint connector.

10. The electrical connector of claim 9, wherein: the elastic sheet (36) is used for electrically connecting a metal shell of the butting connector, and the mounting pin (43) of the outer metal shell (4) is used for electrically connecting a grounding element of the circuit board (200).