CN110011121A - Electric connector and its preparation method - Google Patents

Abstract

An electrical connector and a manufacturing method thereof, wherein the manufacturing steps include: preparing a tubular metal conductor and a columnar metal conductor, wherein the columnar metal conductor passes through the interior of the tubular metal conductor along an axial direction, and the circumference of the tubular metal conductor and/or the columnar metal conductor is provided with at least one groove surrounding the axial direction; assembling an O-ring and positioning it in the groove, wherein the O-ring protrudes from the groove; and positioning the tubular metal conductor, the columnar metal conductor and the O-ring, and performing embedded injection molding to form an insulating body covering the O-ring. The electrical connector manufactured by the above-mentioned manufacturing method has a simple manufacturing process and a low cost, and the gas leakage path is sealed while forming the insulating body.

Description

Electrical connector and method of making the same

technical field

The present invention relates to a connector, which is suitable for power transmission, has the advantages of simple structure and low manufacturing cost, and can also provide good waterproof and gas leakage prevention effects.

Background technique

The electrical connector is an indispensable connection interface for electronic devices. The existing electrical connector manufacturing method, for example, includes the following steps: preparing the positive and negative electrode sheets, the insulating sleeve and the casing, and assembling the positive electrode sheet on the insulating sleeve. , and then assemble the negative electrode piece on the outside of the insulating conduit, and finally assemble the casing to cover the negative electrode piece, and complete the whole power connector. It can be seen from this that it takes four steps to complete the manufacturing and assembly of the four parts, which consumes a lot of man-hours.

In addition, in order to seal the gap between the positive and negative electrodes, the insulating sleeve and the casing, the existing method is to use glue to seal to prevent gas leakage, and the process becomes more complicated.

SUMMARY OF THE INVENTION

The present invention provides an electrical connector and a manufacturing method thereof, which can achieve the effect of simplifying the manufacturing process and provide good airtight and waterproof effects.

The method for manufacturing an electrical connector provided by the present invention includes the steps of: preparing a tubular metal conductor and a columnar metal conductor, the columnar metal conductor passes through the interior of the tubular metal conductor along an axial direction, and the tubular metal conductor and/or the columnar metal conductor The peripheral surface of the metal conductor is provided with at least one groove around the axial direction; the assembled O-ring is positioned in the groove, and the O-ring protrudes from the groove at this time; and the tubular metal conductor, the column-shaped metal conductor and the O-ring are positioned, Buried injection molding is performed to form an insulating body covering the O-ring.

The aforementioned technical solution only needs three processes to complete the manufacture of the electrical connector, and the insulating body will compress the O-ring, thereby sealing the leakage path of the gas inside the electrical connector.

The present invention also provides an electrical connector manufactured by the aforementioned manufacturing method, wherein the tubular metal conductor and the columnar metal conductor are coaxially arranged.

Therefore, in the embedded injection molding step, the plastic pouring direction can be parallel to the axial direction, and has better fluidity to improve the process yield. In addition, the O-ring can also be perpendicular to the axial direction, which also helps to improve the process yield.

Description of drawings

FIG. 1 is a cross-sectional view of a columnar metal conductor and an O-ring assembled in a preferred embodiment.

FIG. 2 is a cross-sectional view of the electrical connector of the preferred embodiment.

FIG. 3 is a manufacturing flow chart of the preferred embodiment.

Description of reference numbers:

10 Columnar metal conductor 11 Plug portion 12 First groove

13 Tab 20 Tubular metal conductor 21 Contact surface

22 Second groove 23 Third groove 24 Positioning recess

30 O-ring 40 Insulation body S1～S4 Steps

Detailed ways

In order to fully describe the content and characteristics of the present invention, a preferred embodiment is provided and described below in conjunction with the accompanying drawings. Please refer to FIG. 1 and FIG. 2 , the electrical connector of this embodiment consists of a cylindrical metal conductor 10 , a tubular metal conductor 20 passing through the tubular metal conductor 10 along an axial direction L, three O-rings 30 and an insulating The body 40 is composed together.

The columnar metal conductor 10 is a long rod in this embodiment and serves as a positive terminal. One end of the columnar metal conductor 10 is provided with a plug portion 11 , and the middle portion of the outer peripheral surface is provided with a first groove 12 and a fin 13 . In this embodiment, the long axis of the columnar metal conductor 10 overlaps with the aforementioned axial direction L. In other possible embodiments, the long axis of the columnar metal conductor 10 may not overlap with the aforementioned axial direction L.

In this embodiment, the tubular metal conductor 20 is a hollow cylinder and serves as a negative terminal. Please refer to FIG. 2 . The inner peripheral surface of the tubular metal conductor 20 is stepped and is provided with a second groove 22 at the dimensional change. The outer peripheral surface of the tubular metal conductor 20 is provided with a third groove 23 and a positioning concave portion 24 . In other possible embodiments, the tubular metal conductor 20 can be connected with a conductive sheet as a power transmission path.

The O-rings 30 are respectively disposed in the first to third grooves 12 , 22 , 23 , and the O-rings 30 protrude from the first to third grooves 12 , 22 , 23 , please refer to FIG. 1 . In this embodiment, the thickness of the O-ring 30 along the axial direction is greater than the width of the first to third grooves 12 , 22 , 23 along the axial direction L. For example, the difference between the thickness of the O-ring 30 and the width of the first to third grooves is 0.1-0.4 millimeters (mm), so that the O-ring 30 can be positioned in the first to third grooves 12, 22, 23. In other possible implementations, such as changing the concave shapes of the first to third grooves, the O-ring 30 can be positioned as long as the O-ring 30 can substantially fill the first to third grooves 12 , 22 , 23 .

The O-ring 30 can be made of elastic materials such as silica gel or fluorine rubber, so as to provide sufficient heat resistance. In addition, the inner circumference of the O-ring can be smaller than the circumference of the bottom of the first to third grooves 12, 22, 23, so that the shrinking force of the O-ring 30 itself can be used to help the O-ring 30 to be effectively positioned in the first to third grooves 12, 22, 23. One to the third grooves 12, 22, 23 are among them.

The insulating body 40 is made of plastic, covering the middle section of the tubular metal conductor 20 , and the inner and outer peripheral surfaces of the tubular metal conductor 30 . Therefore, the electrical connector of this embodiment can be connected to another connector (not shown).

It is worth mentioning that the number of O-rings and grooves is not limited to the three in the foregoing embodiment, and can be reduced to one or increased to more than four as needed to close the gas leakage path inside the electrical connector. .

The manufacturing method of the power connector in this embodiment is shown in FIG. 3 . First, step S1 is performed to prepare the tubular metal conductor 10 and the cylindrical metal conductor 20 , set the first groove 12 , the second groove 22 and the third groove 23 , and pass the cylindrical metal conductor 20 through the tubular metal along the axial direction L Inside the conductor 20 . Next, step S2 is performed to assemble the O-ring 30 into the aforementioned first to third grooves 12 , 22 , 23 , and make the O-ring 30 protrude from the first to third grooves 12 , 22 , 23 . Then, step S3 is performed to carry out embedded injection molding, that is, the tubular metal conductor 10, the cylindrical metal conductor 20 and the O-ring 30 are positioned in a mold. The infusion is carried out in the axial direction L to completely cover the O-ring 30 , and then the plastic is cooled and solidified to form the insulating body 40 . Finally, step S4 is entered to complete the manufacture and assembly of the electrical connector of this embodiment.

In the process of injection molding, the O-ring 30 has enough heat resistance to endure molten plastic, and the O-ring 30 is firmly fixed in the first to third grooves 12, 22, 23 to avoid Displacement occurs during the flow of the plastic. Since the O-ring 30 protrudes from the first to third grooves 12 , 22 , 23 , the plastic will cover the O-ring 30 and at the same time compress the O-ring toward the bottom of the first to third grooves 12 , 22 , 23 Ring 30. Therefore, after the plastic is cooled and solidified, the manufacturing process of the electrical connector is completed. The steps are relatively simple, and the gas leakage path will be sealed between the O-ring 30 and the insulating body 40 to achieve the effect of airtight and waterproof. In addition, the insulating body 40 can strengthen the connection strength with the tubular metal conductor 10 and the columnar metal conductor 20 through the fins 13 and the positioning recesses 24 .

Finally, it must be reiterated that the constituent elements disclosed in the foregoing embodiments of the present invention are only for illustration and are not intended to limit the scope of the present invention, such as other easily conceivable structural changes, or differences with other equivalent elements. Alternative changes should also be covered by the claims of the present invention.

Claims (11)

1. a kind of preparation method of electric connector, step includes:

A tubular metal conductor and a cylindrical metal conductor are prepared, the cylindrical metal conductor is along one axially across the tubular metal The circumferential surface of conductor, the tubular metal conductor and/or the cylindrical metal conductor is equipped at least groove around the axial direction；

An assembling at least o-ring is positioned at an at least groove, and an at least o-ring protrudes an at least groove at this time；And

The tubular metal conductor, the cylindrical metal conductor and an at least o-ring are positioned, carries out embedment ejection formation to form one Insulating body covers an at least o-ring.

2. the preparation method of electric connector as described in claim 1, wherein the o-ring substantially fills up the groove.

3. the preparation method of electric connector as claimed in claim 2, wherein the o-ring along the thickness of the axial direction be greater than the groove along The width of the axial direction.

4. the preparation method of electric connector as claimed in claim 3, wherein the o-ring thickness and the difference range of the recess width are 0.1~0.4 millimeter.

5. the preparation method of waterproof electrical connector as claimed in claim 3, wherein the interior perimeter of the o-ring is less than the week of the bottom portion of groove It is long.

6. the preparation method of electric connector as described in Claims 1-4 any item, wherein the o-ring is by silica gel or fluorubber It is made.

7. the preparation method of electric connector as described in Claims 1-4 any item, wherein in a modeling of embedment ejection formation step The parallel axial direction in material perfusion direction.

8. the preparation method of electric connector as described in Claims 1-4 any item, wherein the quantity of an at least groove is three It is a, it is respectively arranged at the outer peripheral surface of the cylindrical metal conductor and the inner peripheral surface and outer peripheral surface of the tubular metal conductor.

9. a kind of electric connector, is made using the method as described in claim 1, wherein the tubular metal conductor and column gold Belonging to conductor is to be coaxially disposed centered on the axial direction.

10. electric connector as claimed in claim 8, wherein an at least o-ring is perpendicular to the axial direction.

11. electric connector as claimed in claim 8, wherein the tubular metal conductor and the cylindrical metal conductor are respectively at periphery Face is equipped with a location indentations and a fin.