CN109217012B

CN109217012B - Waterproof connector shell and waterproof connector

Info

Publication number: CN109217012B
Application number: CN201810990154.8A
Authority: CN
Inventors: 樊凌云
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2020-05-19
Anticipated expiration: 2038-08-28
Also published as: CN109217012A

Abstract

The utility model provides a waterproof connector shell, includes cyclic annular main part and is formed in cyclic annular main part outlying waterproof groove, the waterproof groove includes the inner wall and is located the first of inner wall both sides, the spacing portion of second, the external diameter of first spacing portion is greater than the external diameter of the spacing portion of second, the external diameter of the spacing portion of second is greater than the external diameter of inner wall, be formed with waterproof ring through the point shaping in the waterproof groove, waterproof ring is through certainly make glue of spacing portion one side of second coat in first spacing portion surface and fill waterproof groove forms. This application waterproof performance is higher, and manufacturing cost is lower.

Description

Waterproof connector shell and waterproof connector

Technical Field

The present disclosure relates to electrical connectors, and more particularly to a waterproof connector housing and a waterproof connector.

Background

The mobile device has more and more waterproof requirements, and the casing of the mobile device must be provided with some interfaces to connect with external devices, such as a USB interface, an Audio Jack, a SIM card socket, and the like; and these connection interfaces need to be waterproofed, otherwise, the mobile device cannot realize the waterproof performance.

The existing waterproof scheme is generally carried out by sleeving a waterproof ring, namely, the silica gel waterproof ring is formed firstly, and meanwhile, a groove structure for accommodating the waterproof ring is arranged on a shell of the connector. When the structure is installed, the waterproof ring is easy to fall off, and the manufacturing and assembling cost of the silica gel waterproof ring is higher.

Disclosure of Invention

In view of the above, it is desirable to provide a waterproof connector housing and a waterproof connector which are simple to manufacture, can be manufactured at a low cost, and have excellent waterproof performance.

For solving above-mentioned technical problem, the application provides a waterproof connector shell, including cyclic annular main part and form in cyclic annular main part outlying capillary groove, the capillary groove includes the inner wall and is located the first of inner wall both sides, the spacing portion of second, the external diameter of first spacing portion is greater than the external diameter of the spacing portion of second, the external diameter of the spacing portion of second is greater than the external diameter of inner wall, the formation is formed with waterproof circle through the point glue in the capillary groove, waterproof circle is through certainly make glue of the spacing portion one side of second coat in first spacing portion surface and fill waterproof groove forms.

Preferably, when dispensing, the shell is vertically fixed on a workbench, the second limiting part is positioned above the first limiting part, and the dispensing equipment provided moves relative to the waterproof groove to dispense.

Preferably, the vertical distance between the first limiting portion and the second limiting portion is the height of the waterproof ring, h is set, and the glue outlet of the glue dispensing equipment is flush with the lower surface of the second limiting portion.

Preferably, point a on the water-proof slot is set as a dispensing starting point, point B is set as a dispensing point, the dispensing equipment starts to dispense glue from the starting point a and stops dispensing from the dispensing along the water-proof slot to an end point B, and the distance between the starting point a and the end point B is 0.15-0.3 mm.

Preferably, the dispensing equipment stops moving along the direction of the waterproof groove when ending at the point B, and simultaneously moves downwards for 0.3h to 0.5h, then immediately raises to the height h, then continues moving to the position exceeding the starting point A along the direction of the waterproof groove, and the dispensing equipment does not discharge glue in the process of moving from the ending point B to the starting point A.

Preferably, the waterproof ring is made of UV glue.

Preferably, the viscosity of the UV glue is 50000-80000 cps, the moving speed of the dispensing equipment is 3.0-4.0 mm/s, and the filling pressure of the dispensing equipment is 0.40-0.45 MPa.

Preferably, the viscosity of the UV glue is 80000-120000 cps, the moving speed of the dispensing equipment is 2.5-3.5 mm/s, and the filling pressure of the dispensing equipment is 0.42-0.46 MPa.

Preferably, the viscosity of the UV glue is 120000-210000 cps, the moving speed of the dispensing equipment is 1.5-2.5 mm/s, and the filling pressure of the dispensing equipment is 0.50-0.55 MPa.

To solve the above technical problem, the present application further provides a waterproof connector including the waterproof connector housing as claimed in the above claims.

Preferably, the housing further includes an accommodating cavity which is opened in the annular main body part and is through in the plugging direction, a blocking part is formed on the inner wall of the accommodating cavity in a protruding manner, the waterproof connector further includes a plug connector, the plug connector includes a middle plate, conductive terminals which are arranged on the upper and lower sides of the middle plate, and an insulating body which integrates the middle plate and the conductive terminals into a whole, the insulating body includes a base part and a butt joint tongue part which is formed by extending the base part forward, and the base part of the insulating body abuts against the blocking part.

Preferably, the base of the insulating body is provided with a plurality of positioning holes in the plugging direction, and the rear end of the blocking part is convexly provided with a plurality of positioning blocks which penetrate through the positioning holes and extend to the rear end of the base; the blocking part is provided with a plurality of through parts in the plugging direction, and the base part is provided with a plurality of positioning bulges corresponding to the through parts.

Preferably, the waterproof connector further comprises a welding plate disposed at the rear end of the base, the welding plate is welded to the positioning block of the blocking portion, and the welding plate and the blocking portion clamp the base of the insulating body to fix the plug connector.

Preferably, the waterproof connector further comprises a waterproof glue coated on the rear end of the welding plate.

Compare in the current waterproof scheme that adopts the installation silica gel circle, this application through the mode of some glue make UV glue shaping in the waterproof groove, waterproof performance is better, can realize IPX 8's waterproof rank, and manufacturing cost is cheaper, and has avoided the problem that the silica gel circle drops easily.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of a connector of the present application;

FIG. 2 is a perspective view of the housing of the connector of the present application;

FIG. 3 is a perspective view of the connector of the present application;

FIG. 4 is a perspective view of another angle of the housing of the connector of the present application;

FIG. 5 is a top view of the housing of the connector of the present application;

3 FIG. 3 6 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 5 3; 3

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

fig. 8 is a perspective view of the connector housing with the waterproof ring formed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example one

Referring to fig. 1 to 3, 6 and 7, the connector of the present application is a USB type connector, and includes a housing 10 and a plug 30 assembled in the housing 10.

The housing 10 is manufactured by a powder metallurgy process, and includes an annular main body 11, an accommodating cavity (not shown) surrounded by the annular main body 11, and a waterproof groove 12 opened on the periphery of the annular main body 11.

The waterproof groove 12 includes an inner wall 123, and first and second position-limiting

portions

121 and 122 located on both sides of the inner wall 123. The outer diameter of the first position-limiting portion 121 is greater than the outer diameter of the second position-limiting portion 122, and the outer diameter of the second position-limiting portion 122 is greater than the outer diameter of the inner wall 123.

The inner wall 123 is a closed ring structure and includes a linear portion and an arc portion, and the inner wall 123 at the position of the arc portion is recessed to form a recessed portion 124.

Waterproof rings 20 are formed on the waterproof grooves 12 in a dispensing mode.

A blocking part (not marked) is integrally formed in the accommodating cavity, a penetrating part (not marked) is formed at the upper part of the blocking part in a penetrating mode in the inserting direction, and a plurality of positioning blocks (not marked) are integrally formed at the rear end of the blocking part.

The plug connector 30 includes a middle plate 32, two rows of conductive terminals 31 respectively disposed on two sides of the middle plate 32, and an insulating body 33 integrally forming the middle plate 32 and the conductive terminals 31. The insulating body 33 includes a base 331 and a mating tongue 332 extending forward from the base 331, and the contact portions of the two rows of conductive terminals 31 are respectively exposed on two side surfaces of the mating tongue 332. The base 331 is provided with a plurality of positioning holes 333 for accommodating the positioning blocks and a plurality of positioning projections 334 for accommodating the through portions in the insertion and extraction direction.

The plug connector 30 is inserted into the accommodating cavity 12 from the rear end of the housing 10, the base 331 abuts against the rear end of the blocking portion, and the positioning block at the rear end of the blocking portion passes through the positioning hole 333 and is exposed out of the rear end of the base 331.

The connector of this application still includes welded plate 40 and waterproof glue 50, plug connector 30 inserts back in the accommodation cavity 12 will welded plate 40 packs into and welds through the mode of spot welding on the locating piece of blocking part rear end, welded plate 40 with the blocking part centre gripping insulator 30's basal portion 331 is in order to fix plug connector 30. The waterproof glue 50 is coated on the rear end of the welding plate 40.

Example two

The embodiment of the invention describes a method for forming a waterproof ring on a shell in detail.

In this embodiment, the connector is not limited to a USB connector, and the housing 10 is not limited to a metal material, and may be a plastic housing.

Referring to fig. 1, 5 and 8, the method for forming the waterproof ring of the present application includes the following steps:

s01, providing a shell 10 with a waterproof groove 12 on the outer surface;

the housing 10 in this step is not limited to be made of any material, and is preferably made of metal or plastic;

portions

S02, dispensing and forming the waterproof ring along the waterproof groove by using dispensing equipment;

the glue in the step is UV glue, and the viscosity of the UV glue is 50000-210000 cps.

In the step of injecting glue, the housing 10 is vertically fixed on a workbench (not shown), that is, the rear end of the housing 10 is fixed on the workbench, the second limiting portion 122 is located at the upper side, and the first limiting portion 121 is located at the lower side, as shown in fig. 6.

The glue dispensing equipment is a glue gun, the glue gun is positioned above the shell 10 along the waterproof groove 12 to move the glue injection circle for forming the waterproof ring 20.

As shown in fig. 5, when dispensing is performed by the dispensing device, a dispensing starting point is set at point a on the first limiting portion 121, and point B is a dispensing beam point. The distance between the starting point and the end point is 0.15-0.3 mm. The distance between the first limiting portion 121 and the second limiting portion 122 is the height h of the waterproof ring 20, the glue outlet of the glue dispensing equipment is flush with the second limiting portion 122 located above, and preferably, the waterproof ring is 0.5 mm.

The dispensing equipment starts to advance along the waterproof slot 12 from a starting point A and dispenses, when the dispensing equipment runs to an end point B, the dispensing equipment stops dispensing and moves downwards for 0.3-0.5h at the same time, and then rises upwards, and the distance of downward movement of the dispensing equipment is preferably 0.4 times of the height h of the waterproof ring 20. When the dispensing equipment moves downwards, the dispensing equipment does not move along the waterproof groove 12, the dispensing equipment continues to move to the position of the starting point A along the waterproof groove 12 after being lifted upwards at the end point B, and the dispensing equipment stops dispensing in the process from the end point B to the starting point A.

The inner diameter of the glue outlet of the glue dispensing device is smaller than the width of the cross section of the first limiting part 121.

When the step is implemented specifically, there is a correlation between the moving speed of the dispensing equipment, the viscosity of the glue and the dispensing pressure, specifically, the following three embodiments are implemented:

1, glue water: the viscosity is 50000-80000 cps, the moving speed of the dispensing equipment is 3.0-4.0 mm/s, and the filling pressure of the dispensing equipment is 0.40-0.45 Mpa; the moving speed of the dispensing equipment is preferably 3.5 mm/s.

Glue 2: the viscosity is 80000-120000 cps, the moving speed of the dispensing equipment is 2.5-3.5 mm/s, and the filling pressure of the dispensing equipment is 0.42-0.46 Mpa; the moving speed of the dispensing equipment is preferably 3.0 mm/s.

Glue 3: the viscosity is 120000-210000 cps, the moving speed of the dispensing equipment is 1.5-2.5 mm/s, and the filling pressure of the dispensing equipment is 0.50-0.55 MPa; the moving speed of the dispensing equipment is preferably 2.0 mm/s.

When dispensing, the following three moving dispensing modes are adopted in the step:

in an XY plane of dispensing, glue injection of the waterproof groove 12 is completed through movement of the dispensing equipment in the X direction and movement of the workbench in the Y direction;

in an XY plane of dispensing, the workbench is static, and glue injection of the waterproof groove 12 is completed through movement of the dispensing equipment in XY directions;

in an XY plane of dispensing, the dispensing equipment is static, and glue injection of the waterproof groove 12 is completed through movement of the workbench in XY directions.

S03, drying the shell subjected to glue dispensing;

in this step, the housing 10 is placed under an ultraviolet lamp to be dried.

In other embodiments, in step S02, dispensing is performed from top to bottom, or from a direction perpendicular to the inner wall 123 by rotating the housing.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A waterproof connector shell comprises an annular main body part and a waterproof groove formed on the periphery of the annular main body part, it is characterized in that the waterproof groove comprises an inner wall, a first limiting part and a second limiting part which are positioned at two sides of the inner wall, the outer diameter of the first limiting part is larger than that of the second limiting part, the outer diameter of the second limiting part is larger than that of the inner wall, a waterproof ring is formed in the waterproof groove through dispensing forming, the waterproof ring is formed by coating glue on the surface of the first limiting part from one side of the second limiting part and filling the waterproof groove, the shell is vertically fixed on a workbench during dispensing, and the second limiting part is positioned above the first limiting part, the provided dispensing equipment relatively moves along the waterproof groove for dispensing, and two ends of the waterproof ring are respectively and smoothly connected with the first limiting part and the second limiting part.

2. The waterproof connector housing according to claim 1, wherein a vertical distance between the first stopper portion and the second stopper portion is a height of the waterproof ring, h is set, and a glue outlet of the dispensing device is flush with a lower surface of the second stopper portion.

3. The waterproof connector housing according to claim 2, wherein a point a on the waterproof groove is set as a dispensing starting point, a point B is set as a dispensing point, the dispensing device starts dispensing from the starting point a and stops dispensing from the dispensing along the waterproof groove to an end point B, and a distance between the starting point a and the end point B is 0.15 to 0.3 mm.

4. The waterproof connector housing of claim 3, wherein the dispensing device stops moving in the direction of the waterproof slot at end point B, and moves downward for 0.3h to 0.5h, then immediately raises to h height, then continues moving in the direction of the waterproof slot to beyond the position of the starting point A, and during the movement from end point B to the starting point A, the dispensing device does not dispense any more glue.

5. The waterproof connector shell according to claim 1, wherein the waterproof ring is made of UV glue.

6. The waterproof connector housing according to claim 5, wherein the viscosity of the UV glue is 50000-80000 cps, the moving speed of the dispensing device is 3.0-4.0 mm/s, and the filling pressure of the dispensing device is 0.40-0.45 MPa.

7. The waterproof connector housing according to claim 5, wherein the viscosity of the UV glue is 80000 to 120000cps, the moving speed of the dispensing device is 2.5 to 3.5mm/s, and the filling pressure of the dispensing device is 0.42 to 0.46 MPa.

8. The waterproof connector housing according to claim 5, wherein the viscosity of the UV glue is 120000-210000 cps, the moving speed of the dispensing equipment is 1.5-2.5 mm/s, and the filling pressure of the dispensing equipment is 0.50-0.55 MPa.

9. A watertight connector, characterized by comprising a watertight connector housing as claimed in any one of claims 1 to 8.

10. The waterproof connector according to claim 9, wherein the housing further includes a receiving cavity opened in the annular main body and penetrating in the inserting and pulling direction, a blocking portion is formed on an inner wall of the receiving cavity in a protruding manner, the waterproof connector further includes a plug connector, the plug connector includes a middle plate, conductive terminals disposed on upper and lower sides of the middle plate, and an insulating body integrally formed with the middle plate and the conductive terminals, the insulating body includes a base portion and a butt-joint tongue portion extending forward from the base portion, and the base portion of the insulating body abuts against the blocking portion.

11. The waterproof connector as claimed in claim 10, wherein a plurality of positioning holes are formed on the base of the insulating body in the inserting and extracting direction, and a plurality of positioning blocks extending to the rear end of the base through the positioning holes are formed at the rear end of the blocking part in a protruding manner; the blocking part is provided with a plurality of through parts in the plugging direction, and the base part is provided with a plurality of positioning bulges corresponding to the through parts.

12. The waterproof connector according to claim 11, further comprising a welding plate disposed at a rear end of the base portion, the welding plate being welded to the positioning block of the blocking portion, the welding plate and the blocking portion clamping the base portion of the insulating body to fix the plug.

13. The waterproof connector as claimed in claim 12, further comprising a waterproof glue applied to a rear end of the welding plate.