CN216598170U - Connector - Google Patents

Abstract

The utility model provides a connector, which comprises an insulating body, the insulating body includes a through hole passing through the front and rear ends of the insulating body; a shell assembled on the periphery of the insulating body; a fixing element in the fixing element; an elastic locking arm, the elastic locking arm is provided with a connecting portion embedded in the fixing element, and a bonding layer provided on the surface of the connecting portion; a plurality of terminals, so The terminal is provided with a fixing portion fixed in the fixing element, a welding portion extending backward from the fixing portion to the outside of the insulating body, and a welding portion disposed between the fixing portion and the welding portion. a fitting layer, and a waterproof glue, the waterproof glue is in close contact with the surface of the bonding layer and the fitting layer respectively and seals the rear end of the through hole.

Description

Connector

technical field

The utility model relates to a connector, in particular to a connector with improved sealing and waterproofing effect.

Background technique

With the increasing demand for waterproof performance of portable devices, waterproof connectors used in portable devices have become popular, and small connectors with waterproof functions have become mainstream products today.

The body of the known connector often has a through hole passing through in the front and rear directions, and the terminal module is assembled in the through hole so that one end of the terminal is butted with a connector, and the other end of the terminal is welded to the circuit board. The rear end of the through hole and the gap between the terminals are sealed by applying waterproof glue on the rear end of the through hole. However, in the process of reflow soldering between the terminal and the circuit board, due to the large temperature drop, the waterproof glue and the terminal have different degrees of thermal expansion and contraction, and the surface of the terminal is smooth, resulting in cracks between the terminal and the waterproof glue. Affects the waterproofing effect of the connector seal.

Therefore, it is particularly important to design a connector that improves the sealing and waterproofing effect.

Utility model content

The purpose of the present utility model is to overcome the above-mentioned deficiencies of the prior art, and to provide a connector with improved sealing and waterproofing effect.

In order to achieve the above purpose, the present invention provides a connector, which includes an insulating body, the insulating body includes a through hole passing through the front and rear ends of the insulating body; a casing assembled on the periphery of the insulating body; a set of fixed The fixing element in the through hole; an elastic locking arm, the elastic locking arm is provided with a connecting portion embedded in the fixing element, two are disposed at both ends of the connecting portion and facing forward an extending elastic arm, and a bonding layer arranged on the surface of the connecting part; a plurality of terminals, the terminals are provided with a fixing part embedded in the fixing element, A contact portion extending in the direction of the front end of the through hole, a welding portion extending backward from the fixing portion to the outside of the insulating body, a fitting layer disposed between the fixing portion and the welding portion, and a Waterproof glue, the waterproof glue is in close contact with the surface of the bonding layer and the embedding layer respectively and seals the rear end of the through hole.

As a further improvement, the fitting layer includes a plurality of protrusions and a plurality of grooves distributed staggered with each other, and the surface roughness of the fitting layer is in the range of 1 micrometer or more and 3 micrometers or less.

As a further improvement, the surface roughness of the bonding layer ranges from more than 1 micrometer to less than 3 micrometers.

As a further improvement, two side walls of the through-hole are respectively provided with recessed recessed recesses, and a plurality of terminal slots provided on the bottom surface of the through-hole; the elastic arms are accommodated in the recessed recesses, A spacer block is respectively provided between the adjacent terminals, and the contact portion is accommodated in the terminal groove.

As a further improvement, two sides of the front end of the insulating body are respectively provided with an extension portion extending outward, a positioning hole passing through the extension portion, and a bushing sleeved in the positioning hole, the bushing includes An annular main body portion, an extension portion bent and extended from the front end of the bushing to the rear end of the insulating body, and a first welding leg disposed at the end of the extension portion.

As a further improvement, the connecting portion includes a protruding portion and two connecting arms disposed at both ends of the protruding portion, the connecting arms are respectively connected with the elastic arms; and the protruding portion is bent to the rear end so that the A groove is formed between the fixing element and the elastic locking arm, and the groove is arranged between the front end surface of the connecting portion and the rear end surface of the fixing element.

As a further improvement, the waterproof glue is filled in the groove to form a positioning portion, the positioning portion is sleeved on the protruding portion, and a portion of the protruding portion is exposed to the positioning portion.

As a further improvement, the casing includes a top plate, two side plates extending downward from two opposite side edges of the top plate, and a tail plate extending downward from a rear edge of the top plate; the casing is arranged on the the rear end of the insulating body, and the side plate is covered with the side wall of the rear end of the insulating body; and the tail plate is disposed at the rear end of the insulating body and is welded and fixed with the protruding part to close the through hole A hole is formed on the lower edge of the tail plate, and two second welding legs are respectively arranged at both ends of the tail plate.

Description of drawings

FIG. 1 is a perspective view of the connector of the present invention.

FIG. 2 is an exploded view of the connector of the present invention.

FIG. 3 is an exploded view of the connector and the housing of the present invention.

FIG. 4 is a perspective view of a terminal module using a new type of connector.

FIG. 5 is a perspective view of the elastic buckle arm of the connector of the present invention.

6 is a perspective view of a terminal of the connector of the present invention.

FIG. 7 is a partial enlarged schematic view of the connector terminal of the present invention.

The reference numerals of the various parts in the drawings are explained as follows.

Connector 100 Insulating Body 10

The through hole 11 avoids the groove 11a

Terminal slot 11b Spacer block 12

Extension 13 Positioning hole 13a

Bush 14 Main body 14a

The extension portion 14b The first solder leg 14c

Fixing element 21 Elastic snap arm 22

connecting part 23 connecting arm 23a

Projection 23b Bonding layer 25

elastic arm 24 arc portion 24a

Bonding Layer 25 Terminals 27

Fixed part 27a Contact part 27b

Welding part 27c Connection end 27d

Fitting layer 28 Protrusion 28a

Groove 28b Waterproof glue 30

Housing 40 Top Plate 41

Side panel 42 Tail panel 43

Notches 43a and second fillets 43b.

Detailed ways

In order to describe in detail the technical content, structural features, achieved goals and effects of the present utility model, the following detailed description is given in conjunction with specific embodiments and with the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , the connector 100 of the present invention includes an insulating body 10 , a fixing element 21 , an elastic locking arm 22 , a plurality of terminals 27 , a waterproof glue 30 and a shell 40 . The insulating body 10 extends along the axial direction of the connector 100 , and the insulating body 10 includes a through hole 11 penetrating the front and rear ends of the insulating body 10 . For the convenience of description, in this specification, the front end is defined as the end of the connector 100 that is engaged with a mating connector, and the rear end is defined as the end opposite to the front end.

Please refer to FIG. 2 and FIG. 3 again, an extension portion 13 extending outwards is respectively provided on both sides of the front end of the insulating body 10 , a positioning hole 13 a passing through the extension portion 13 , and sleeved in the positioning hole 13 a of a bushing 14. The bushing 14 is used for grounding and increased signal transmission. The bushing 14 includes an annular body portion 14a, an extension portion 14b that is bent and extended from the front end of the bushing 14 to the rear end of the insulating body 10, and an extension portion 14b disposed at the end of the extension portion 14b. The first solder leg 14c. The first solder pins 14c are configured to be soldered and fixed to a circuit board (not shown in the figure), thereby enhancing the mechanical strength of the connector 100 of the present invention.

Referring to FIG. 2 again, two side walls of the through hole 11 are respectively provided with recessed recessed recesses 11a, and a plurality of terminal grooves 11b provided on the bottom surface of the through hole 11. And a spacer block 12 is respectively provided between the adjacent terminal slots 11b.

Please refer to FIG. 2 to FIG. 5 together again. The fixing element 21 is fixed in the through hole 11 , and the elastic locking arm 22 is provided with a connecting portion 23 embedded in the fixing element 21 . , and two elastic arms 24 disposed at both ends of the connecting portion 23 and extending forward. The elastic arm 24 extends toward the front end of the through hole 11 and is accommodated in the recess 11a. The connecting portion 23 includes a protruding portion 23b exposed at the rear end of the fixing element 21 and a connecting portion 23b. The two connecting arms 23a at both ends of the protruding portion 23b are embedded in the fixing element. The terminals 27 are embedded in the fixing element 21 and disposed between the elastic locking arms 22 . Specifically, the front end of the elastic arm 24 is provided with an arc-shaped portion 24 a convexly facing the terminal 27 , and the recess 11 a provides a space for the arc-shaped portion 24 a to retreat, so as to avoid the elastic arm 24 It is damaged by being squeezed when plugging and unplugging. The connecting arms 23 a are respectively disposed at both ends of the connecting portion 23 , and the connecting arms 23 a are connected to the rear ends of the elastic arms 24 .

Please refer to FIG. 2 to FIG. 4 and FIG. 6 together. The terminal 27 includes a fixing portion 27 a embedded in the fixing element 21 , a contact portion 27 b disposed at the front end of the fixing portion 27 a , and a The welding portion 27c provided at the rear end of the fixing portion 27a. The contact portion 27b extends toward the front end of the through hole 11 , and the welding portion 27c is disposed at the rear end of the fixing element 21 and exposed to the rear end of the insulating body 10 . The contact portion 27b is accommodated in the terminal slot 11b, and the terminals 27 are spaced apart by the spacer block 12 to prevent the terminals 27 from shaking. The front end of the contact portion 27b is provided with a connecting end 27d with a convex surface facing upward, and the connecting end 27d protrudes from the inner surface of the insulating body 10 .

Please refer to FIGS. 2 to 4 , 6 and 7 again, the waterproof glue 30 is coated on the rear end of the fixing element 21 to connect and seal the through hole 11 . In order to further enhance the bonding strength between the waterproof glue 30 and the connecting portion 23 and the terminal 27 , respectively, the waterproof glue 30 is prevented from being separated from the connecting portion 23 and the terminal 27 respectively during reflow. In this preferred embodiment, a surface of the terminal 27 is provided with a fitting layer 28, and the position of the fitting layer 28 is set between the rear end of the fixing element 21 and the welding portion 27c. After the terminal 27 is installed on the fixing element 21 , the fitting layer 28 is located at the rear end of the through hole 11 .

The fitting layer 28 includes a plurality of protrusions 28a and a plurality of grooves 28b distributed in a staggered manner. The protrusion protrudes from the surface of the terminal 27 , and the groove 28b is recessed toward the surface of the terminal 27 . The protrusions 28 a and the grooves 28 b are formed through a laser processing process and are distributed in a staggered manner throughout the intercalation layer 28 , so that the intercalation layer 28 has a rough surface. The waterproof glue 30 fills the groove 28b and the surface of the protrusion 28a to improve the bonding force between the waterproof glue 30 and the embedding layer 28 . Moreover, the surface roughness of the fitting layer 28 is in the range of 1 micrometer or more and 3 micrometers or less. When the surface roughness of the fitting layer 28 is less than 1 micron, the surface roughness of the fitting layer 28 is too smooth, and it is difficult to adhere to the waterproof glue 30 . When the surface of the fitting layer 28 is larger than 3 microns, the surface roughness of the fitting layer 28 exceeds the control range, which will lead to longer processing time, which is not conducive to production.

Please refer to FIGS. 2 , 4 and 5 again. Meanwhile, a bonding layer 25 is provided on the surface of the connecting portion 23 . The surface of the bonding layer 25 is roughened by a sandblasting surface processing process. The waterproof glue 30 improves the bonding force between the bonding layer 25 and the waterproof glue 30 by filling the gap between the surfaces of the bonding layer 25 . In addition, the surface roughness of the bonding layer 25 is in the range of 1 micrometer or more and 3 micrometers or less. When the surface roughness of the bonding layer 25 is less than 1 micron, the surface roughness of the bonding layer 25 is too smooth, making it difficult for the surface of the bonding layer 25 to closely adhere to the waterproof glue 30 . When the surface roughness of the bonding layer 25 is greater than 3 microns, it will exceed the control range, which is not conducive to production.

And the protruding portion 23b is bent toward the rear end so that a groove 26 is formed between the fixing element 21 and the elastic locking arm 22 , and the groove 26 is arranged between the front end surface of the connecting portion 23 and the end surface of the connecting portion 23 . between the rear end faces of the fixing element 21 . The waterproof glue 30 is filled in the groove 26 to form a positioning portion 31 , the positioning portion 31 is sleeved on the protruding portion 23 b , and a part of the protruding portion 23 b is exposed to the positioning portion 31 . In order to improve the fluidity of the waterproof glue 30 and the flatness of the cured waterproof glue 30 , the sealing performance of the connector 100 is enhanced at the same time.

Please refer to FIG. 2 and FIG. 3 again, further, the casing 40 is made of conductive material and includes a top plate 41 , two side plates 42 extending downward from two opposite side edges of the top plate 41 , and a top plate 41 . A tail plate 43 extending downward from the rear edge of 41 . The casing 40 is disposed at the rear end of the insulating body 10 , and the side plate 42 is covered with the side wall of the rear end of the insulating body 10 . The tail plate 43 is disposed at the rear end of the insulating body 10 and is welded and fixed with the protruding portion 23b to close the rear end of the through hole 11 . The welding portion 27c is exposed to the insulating body 10 through the notch 43a; and two second welding legs 43b respectively disposed on both ends of the tail plate 43, the second welding legs 43b are welded to the circuit board, And the second solder leg 43b and the first solder leg 14c are coplanar.

To sum up, the connector 100 of the present invention is coplanar with the first soldering pin 14c and the second soldering pin 14b, and the first soldering pin 14c and the second soldering pin 43b are welded to the The circuit board enhances the mechanical strength of the connector 100 of the present invention. At the same time, the connecting portion 23 is processed by sandblasting the bonding layer 25, and the terminal 27 is processed by the laser surface processing the fitting layer 28, so as to strengthen the waterproof glue 30 and the bonding layer 25, Adhesion of the fitting layer 28 .

Claims (8)

1. A connector is characterized by comprising an insulating body, wherein the insulating body comprises a through hole penetrating through the front end and the rear end of the insulating body; a housing assembled to the periphery of the insulator body; a set of fixing elements fixed in the through holes; the elastic buckling arm is provided with a connecting part embedded and ejected in the fixed element, two elastic arms which are arranged at two ends of the connecting part and extend forwards, and a binding layer arranged on the surface of the connecting part; the terminal is provided with a fixed part embedded and injected into the fixed element, a contact part extending from the fixed part to the front end direction of the through hole, a welding part extending from the fixed part to the outside of the insulating body, an embedded layer arranged between the fixed part and the welding part, and waterproof glue which is respectively tightly pressed with the combined layer and the surface of the embedded layer and seals the rear end of the through hole.

2. The connector of claim 1, wherein the fitting layer includes a plurality of protrusions and a plurality of grooves which are staggered with each other, and the surface roughness of the fitting layer ranges from 1 micron to 3 microns.

3. The connector of claim 1, wherein the bonding layer has a surface roughness in a range of 1 micron or more and 3 microns or less.

4. The connector according to claim 1, wherein both side wall surfaces of the through hole are respectively provided with a recessed clearance groove and a plurality of terminal grooves provided on a bottom surface of the through hole; the elastic arm is accommodated in the clearance groove, a spacing block is arranged between each two adjacent terminals, and the contact part is accommodated in the terminal groove.

5. The connector of claim 1, wherein the insulator has an extension portion extending outward, a positioning hole passing through the extension portion, and a bushing received in the positioning hole, the bushing includes a main body portion having a ring shape, an extension portion extending from a front end of the bushing to a rear end of the insulator, and a first solder tail disposed at an end of the extension portion.

6. The connector according to claim 1, wherein the connecting portion comprises a protrusion and two connecting arms disposed at two ends of the protrusion, the connecting arms are respectively connected to the elastic arms; and the convex part is bent towards the rear end so as to form a groove between the fixing element and the elastic buckling arm, and the groove is arranged between the front end surface of the connecting part and the rear end side surface of the fixing element.

7. The connector of claim 6, wherein the waterproof glue is filled in the groove to form a positioning portion, the positioning portion is sleeved on the protruding portion, and the protruding portion is exposed out of the positioning portion.

8. The connector of claim 7, wherein said housing includes a top plate, two side plates extending downwardly from opposite side edges of said top plate and a tail plate extending downwardly from a rear edge of said top plate; the shell is arranged at the rear end of the insulating body, and the side plate covers the side wall at the rear end of the insulating body; the tail plate is arranged at the rear end of the insulating body and is welded and fixed with the protruding part to close the through hole, a notch is arranged on the lower edge of the tail plate, and two second welding feet are respectively arranged at the two ends of the tail plate.

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