Housing for electrical connector and electrical connector

Abstract

The present invention discloses a housing for an electric connector and an electric connector, the electric connector comprising a housing, a connector, a printed circuit board and an insulating adhesive layer, the housing covers the rear of the connector, the front of the housing has a plurality of suspended support arms extending forward, a glue-filled space is formed between the support arms and the side of the connector, the insulating adhesive layer is formed by mold forming and covers at least a portion of the connector and the entire housing, and fills the glue-filled space. In the process of forming the insulating adhesive layer by the mold forming process, the insulating adhesive layer covers at least a portion of the connector and the entire housing, and fills the above-mentioned glue-filled space, so that the bite force between the housing, the connector and the insulating adhesive layer is greatly increased, and it is not easy to form an opening between the connector and the insulating adhesive layer, thereby reducing the defective rate of the product.

Description

Technical Field

[0001] The present invention relates to the field of electronic equipment, and in particular to a casing for an electric connector and an electric connector. Background Art

[0002] In the common connectors on the market, in order to ensure the stability of the connection between the connector end and the PCB board, two metal shells are usually pressed together to form a metal ring between the two, and the front end of the metal ring is pressed against the end of the connector end. However, due to the shape factor, the metal ring is often not tightly connected to the connector end, leaving a large gap between the metal ring and the connector end, such as Figure 1 As shown, during the process of molding the insulating adhesive layer outer mold 20', an opening H is easily formed between the connector end 10' and the insulating adhesive layer outer mold 20', resulting in poor product processing. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide an improved housing for an electrical connector.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a casing for an electrical connector, the casing comprising two shells that are matched and connected in an up-down direction, each of the shells being formed integrally from a metal sheet, and each of the shells comprising a shell front portion, a shell neck portion and a shell rear portion that are connected in sequence from front to back, wherein the shell front portion has a suspended support arm, and the support arm extends horizontally forward from the end of the shell front portion; the left and right sides of the shell front portion are each provided with a connecting arm, and the connecting arm is gradually bent and extended inwardly along the left and right directions, and a gap is provided between the connecting arm and the shell rear portion along the front-to-back direction; the left and right sides of the shell rear portion are each provided with an outer edge that is bent inwardly, and the outer edge is different in shape from the connecting arm, and the shell rear portions of the two shells are connected to each other along the outer edge; each of the shells is also provided with a reinforcing rib group that spans the shell front portion, the shell neck portion and the shell rear portion in the front-to-back direction, and a wire fixing arm is also provided at the end of the shell rear portion.

[0005] Another object of the present invention is to provide an improved electrical connector.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electrical connector, including a casing, a connector, a printed circuit board and an insulating rubber layer, the casing covers the rear part of the connector, the front part of the casing has a plurality of suspended support arms extending forward, a glue-filled space is formed between the support arms and the side of the connector, the insulating rubber layer is made by mold molding and covers at least a part of the connector and the entire casing, and fills the glue-filled space.

[0007] Preferably, the casing includes two shells that are matched and connected in the up and down directions, each of the shells includes a shell front part, a shell neck and a shell rear part that are connected in sequence from front to back, the shell front part includes a central part, and two connecting arms that are gradually bent and extended inward from the central part along the left and right directions, and there is a gap between the connecting arms and the rear part of the shell along the front and back directions, the joint has a joint base located at the rear, and the two connecting arms are respectively attached to the sides of the joint base.

[0008] In some embodiments, the two shells are an upper shell and a lower shell, respectively, the central portion of the upper shell is affixed to the front side of the joint base, the support arm is formed by horizontally extending forward from the central portion, and the joint base has two sets of lateral curved surfaces disposed on the left and right sides, and the two connecting arms are respectively bent and deformed to at least partially affix to the lateral curved surfaces on both sides.

[0009] In some embodiments, on the left and right sides of the housing, the connecting arm of the upper housing and the other connecting arm of the lower housing are arranged on the lateral curved surface so as to at least partially overlap.

[0010] Preferably, the support arm is formed by horizontally extending forward from the end of the front portion of the shell.

[0011] Preferably, the two shells are respectively formed in one piece from a single metal material.

[0012] Preferably, each of the shells is provided with a group of reinforcing ribs that span the front portion of the shell, the neck portion of the shell, and the rear portion of the shell in the front-to-back direction. In some embodiments, the group of reinforcing ribs is formed by deforming the shell, and the group of reinforcing ribs is composed of a plurality of ribs that are parallel to each other and arranged side by side in the left-right direction.

[0013] Preferably, each of the shells is provided with the support arm, and the length of the support arm is not less than 0.2 mm.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the electrical connector of the present invention, wherein a plurality of suspended support arms are extended forward from the front of the casing, so that a glue-filled space is formed between the support arm and the side of the connector, and in the process of making the insulating glue layer by a mold forming process, the insulating glue layer covers at least a portion of the connector and the entire casing, and fills the above-mentioned glue-filled space, so that the bite force between the casing, the connector and the insulating glue layer is greatly increased, and it is not easy to produce an opening between the connector and the insulating glue layer, thereby reducing the defective rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a structural schematic diagram of a connector in the prior art;

[0016] Attached Figure 2 It is a schematic diagram of the three-dimensional structure of an electrical connector according to a specific embodiment of the present invention, wherein an insulating adhesive layer has not yet been formed;

[0017] Attached Figure 3 For attachment Figure 2 A schematic side view of the structure of an electrical connector;

[0018] Attached Figure 4 For attachment Figure 2 A front view structural schematic diagram of an electrical connector;

[0019] Attached Figure 5 For the attachment Figure 4 Schematic diagram of the cross-sectional structure in the middle PP direction;

[0020] Attached Figure 6 For attachment Figure 5 Schematic diagram of the electrical connector after adding an insulating rubber layer and wires.

[0021] Among them: 1- housing; 1A- upper shell; 1B- lower shell; 11- front part of the shell; 11a- central part; 11b- connecting arm; 12- neck part of the shell; 13- rear part of the shell; 13a- main body; 13b- edge; 13c- joint structure; 14- support arm; 15- rib; 16, wire fixing arm; 2- connector; 21- connector base; 3- printed circuit board; 4- insulating adhesive layer; 5- wire. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0023] The following descriptions of the front, rear, left, right, top and bottom directions are all defined with reference to the directions observed by the user when using the electrical connector for plugging operations. This is only for the convenience of describing the relative position relationship of the various components on the electrical connector and should not be regarded as a limitation on the specific position of the corresponding structural features.

[0024] See also Figures 2 to 6 An electrical connector is shown, which includes a housing 1, a connector 2, a printed circuit board 3 and an insulating adhesive layer 4, wherein the printed circuit board 3 is disposed in the inner cavity of the housing 1, the rear portion of the connector 2 extends into the inner cavity of the housing 1 and is connected to the printed circuit board 3, and the housing 1 covers the rear portion of the connector 2.

[0025] The front of the housing 1 has a plurality of suspended support arms 14 extending forward, and a glue-filled space Z is formed between the support arms 14 and the side of the joint 2, and the support arms 14 serve as a platform for glue attachment, see Figure 6 As shown, the insulating adhesive layer 4 is formed by mold molding and covers at least a portion of the connector 3 and the entire housing 1, and fills the above-mentioned filling space Z, so that the bite force between the housing 1, the connector 3 and the insulating adhesive layer 4 is greatly increased, and it is not easy to have an opening between the connector 3 and the insulating adhesive layer 4. Among them, the above-mentioned mold molding refers to a process related to the use of a mold, such as injection molding, which is a process of injecting materials into the mold and forming it after cooling. The more common one is insert molding.

[0026] Specifically, the rear portion of the connector 2 has a connector base 21, which is connected to the printed circuit board 3, and the housing 1 is covered on the outside of the connector base 21. The housing 1 includes two shells that are matched and connected to each other in the up-down direction, namely, an upper shell 1A and a lower shell 1B, and both the upper shell 1A and the lower shell 1B include a shell front portion 11, a shell neck 12, and a shell rear portion 13, and the shell front portion 11, the shell neck 12, and the shell rear portion 13 are sequentially arranged in contact from front to back.

[0027] The support arm 14 is formed by horizontally extending forward from the end of the shell front part 11. Specifically, the shell front part 11 includes a central part 11a, a connecting arm 11b extending from the left side of the central part 11a to the left and gradually bending inward, and another connecting arm 11b extending from the right side of the central part 11a to the right and gradually bending inward, and the supporting arms 11b on both sides have a gap with the shell rear part 13 in the front-to-back direction. The two connecting arms 11b are used to fit on the left and right sides of the joint base 21 respectively.

[0028] The upper shell 1A and the lower shell 1B are both provided with a support arm 14 at the front, wherein the support arm 14 on the upper shell 1A extends horizontally forward from the central portion 11a thereof, and the support arm 14 on the lower shell 1B also extends horizontally forward from the central portion 11a thereof. The length of the support arm 14 is not less than 0.2 mm.

[0029] The central portion 11a of the upper shell 1A is fitted on the front of the joint base 21, and the two side surfaces on the left and right sides of the joint base 21 are both curved surfaces, that is, the joint base 21 has two lateral curved surfaces (not shown in the figure) respectively arranged on the left and right sides, and the two connecting arms 11b on the left and right sides of the same shell are bent and deformed respectively and at least partially fitted on the two lateral curved surfaces on the left and right sides, wherein, on the left and right sides of the housing 1, the connecting arm 14 of the upper shell 1A and the connecting arm 14 of the lower shell 1B are at least partially overlapped and arranged on the same side lateral curved surface of the joint base 21. The arrangement of the above-mentioned connecting arm 11b makes the shell front portion 11 fit the joint base 21 more closely.

[0030] The upper shell 1A and the lower shell 1B are each integrally formed from a single metal material. When the upper shell 1A and the lower shell 1B are not bent, the width of the shell neck 12 is less than twice the width of the connecting arm 14. A reinforcing rib group is provided on both the upper shell 1A and the lower shell 1B. The reinforcing rib group spans the shell front 11, the shell neck 12 and the shell rear 13 in the front-to-back direction, so that the upper shell 1A as a whole or the lower shell 1B is not easily broken. Specifically, as shown in the accompanying drawings, the reinforcing rib group is composed of a plurality of ribs 15 that are parallel to each other and arranged side by side in the left-right direction, and each rib 15 is formed by deforming the shell 1. The present invention is not limited to this. When necessary, the reinforcing rib group may include only a single rib 15.

[0031] The rear parts 13 of the upper shell 1A and the lower shell 1B both include a main body 13a in the middle and outer edges 13b disposed on the left and right sides of the main body 13a and bent inwards. The shape of the outer edge 13b is different from that of the connecting arm 11b, and the two have different curvatures. The rear parts 13 of the two shells are connected along the outer edge 13b. On the same side of the left and right direction of the housing 1, the outer edge of the upper shell 1A and the outer edge of the lower shell 1B are partially overlapped, and a mutually matching joint structure 13c is disposed between the two to be fixedly clamped together.

[0032] A wire fixing arm 16 is further provided at the end of the housing rear portion 13 for fixing the connecting wire 5 . The front end of the wire 5 extends into the housing 1 , and the part extending outside the housing 1 is fixed by the wire fixing arm 16 .

[0033] In summary, the electrical connector of the present embodiment extends forward at the front ends of the upper and lower sides of the casing 1 to form a plurality of suspended support arms 14, so that a glue-filled space Z is formed between the support arms 14 and the connector 3. In the process of forming the insulating glue layer 4 by a mold molding process, the insulating glue layer 4 covers at least a portion of the connector 3 and the entire casing 1, and fills the above-mentioned glue-filled space Z, so that the bite force between the casing 1, the connector 3 and the insulating glue layer 4 is greatly increased, and it is not easy to form an opening between the connector 3 and the insulating glue layer 4, thereby reducing the defective rate of the product.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical connector, comprising a housing, a connector, a printed circuit board and an insulating adhesive layer, characterized in that: The casing covers the rear part of the connector, and the front part of the casing has a plurality of suspended support arms extending forward, and a glue-filled space is formed between the support arms and the side of the connector, and the insulating glue layer is formed by mold forming and covers at least a part of the connector and the entire casing, and fills the glue-filled space, wherein the casing includes two shells that are matched and connected in the up-down direction, each of the shells is formed in one piece from a metal sheet, and each of the shells includes a shell front part, a shell neck part and a shell rear part that are connected in sequence from front to back, wherein the support arm extends horizontally forward from the end of the shell front part; the left and right sides of the shell front part are each provided with a connecting arm, and the connecting arm is gradually bent and extended inwardly along the left-right direction, and there is a gap between the connecting arm and the shell rear part along the front-to-back direction; the left and right sides of the shell rear part are each provided with an outer edge bent inwardly, and the outer edge is different in shape from the connecting arm, and the shell rear parts of the two shells are connected to each other along the outer edge; each of the shells is also provided with a reinforcing rib group that spans the shell front part, the shell neck part and the shell rear part in the front-to-back direction.

2. The electrical connector according to claim 1, characterized in that: The front part of the shell includes a central part and two connecting arms that are bent and extended gradually inward along the left and right directions from the central part. There is a gap between the connecting arms and the rear part of the shell along the front-to-back direction. The joint has a joint base located at the rear, and the two connecting arms are respectively attached to the side surfaces of the joint base.

3. The electrical connector according to claim 2, wherein: The two shells are an upper shell and a lower shell respectively, the central portion of the upper shell is attached to the front side of the joint base, the support arm is formed by horizontally extending forward from the central portion, the joint base has two sets of lateral curved surfaces respectively arranged on the left and right sides, and the two connecting arms are respectively bent and deformed to at least partially attach to the lateral curved surfaces on both sides.

4. The electrical connector according to claim 3, characterized in that: On the left and right sides of the housing, the connecting arm of the upper housing and the other connecting arm of the lower housing are arranged on the lateral curved surface so as to at least partially overlap.

5. The electrical connector according to claim 2, wherein: The two shells are respectively formed in one piece from a single metal material.

6. The electrical connector according to claim 5, characterized in that: Each shell is provided with a reinforcing rib group spanning the front part of the shell, the neck part of the shell and the rear part of the shell in the front-to-back direction.

7. The electrical connector according to claim 6, characterized in that: The reinforcing rib group is formed by deformation of the shell, and the reinforcing rib group is composed of a plurality of ribs that are parallel to each other and arranged side by side in the left-right direction.

8. The electrical connector according to claim 1, wherein: Each of the shells is provided with the support arm, and the length of the support arm is not less than 0.2 mm.

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