TWI606654B - Waterproof connector and its manufacturing method - Google Patents

Description

Waterproof connector and manufacturing method thereof

The invention provides a waterproof connector and a manufacturing method thereof, in particular to use an elastic mold to form a solid waterproof glue at a joint of a plurality of terminals of a connector and a plurality of wires of a wire, and then external to the connector, the wire and the waterproof rubber. It is covered with a protective cover, which can be used to facilitate the demolding operation through the elastic mold, and the utility of the process can be saved to save assembly and material cost.

According to the progress and influence of the technology era, the application of many electronic and electrical products not only improves work efficiency, shortens work time, but also makes the work quality more excellent, and through the convenience and practicality of electronic and electrical products, at work, There are considerable benefits in life. When using various electronic and electrical products, the transmission of various software operation signals, data, audio and video signals, etc. is a very important operation, and must be carried out by different electronic and electrical signals. It can be used for the processing and operation of various related operations, and the wires and electrical connectors used to transmit signals when transmitting various electronic and electrical signals are the most direct and commonly used equipment, through various types of wires. The electrical connection of the electrical connector enables stable and fast transmission of electronic and electrical signals, and also enhances the operation, processing time and function of electronic and electrical products.

However, the existing electrical connectors are often used in outdoor places, so if the electrical connector itself is not designed to be waterproof, it is susceptible to long-term rain, resulting in electricity. The inside of the connector is wet, water seepage, etc., and the connection between the connector and the wire is mostly made of metal material as a signal. If the inside of the connector is wet and water seepage, the metal material may be easily wetted or short-circuited. In order to damage or destroy the transmission function and lose its effect, some manufacturers have developed a waterproof connector for waterproofing in order to solve the problem of waterproofing the electrical connector.

For example, the number of the certificate number No. I352463 "waterproof connector and its manufacturing method" invention patent case, application number No. 097102557, and announced in the patent publication of November 11, 2011, please refer to the seventh figure, It is a side cross-sectional view of a conventional waterproof connector. It can be clearly seen from the figure that the conventional waterproof connector includes a conductive terminal A, an insulating base B, a wire C, a hollow cylinder D, and an overcoat E. And the protective sleeve F, wherein the insulating base B is provided for fixing the conductive terminal A, and has a receiving section B1, the electric wire C has a plurality of core wires C1, and each core wire C1 is respectively connected with one end of each conductive terminal A, and the hollow cylinder D is connected to the receiving section B1 and is located on one side of the electric wire C, and the covering body E is wrapped around one end of the receiving section B1, the hollow cylinder D, the core wire C1 and the same conductive terminal A, and the conductive terminal A and the insulating seat B The wire C and the covering body E are externally covered with a protective cover F to complete the manufacture of the conventional waterproof connector.

However, in the practical application of the above-mentioned conventional waterproof electrical connector, there are still many defects and troubles. For example, the conductive terminal A, the insulating base B and the electric wire C need to be preceded by the receiving section B1 of the insulating seat B. After the hollow cylinder D is installed, the covering body E can be overmolded externally, which complicates the overall assembly process, resulting in an increase in assembly cost, and the hollow cylinder D itself needs to be produced through another procedure. This will increase the manufacturing cost and material cost of the waterproof connector, and thus the overall manufacturing cost will remain high. In addition, since the hollow cylinder D is mounted on the seat B In the connecting section B1, the volume of the connecting portion is increased and increased, so that when the covering body E is wrapped around the hollow cylinder D, the covering body E needs to be increased in usage to complete the package. Covering, resulting in increased material costs, and due to the increased use of the coating E, will also increase the overall volume, which will affect the overall appearance of the appearance.

Therefore, how to solve the above-mentioned lack of inconvenience and inconvenience is the direction that the relevant industry is eager to study and improve.

Therefore, in view of the above-mentioned shortcomings, the inventors have collected relevant information, evaluated and considered them through multiple parties, and have been designing such waterproof connectors and their manufacturing methods through continuous trial and modification through years of experience in the industry. Inventor patent.

The first object of the present invention is that the connector is electrically connected to the plurality of wires of the wire through the connection end through which the plurality of terminals are internally disposed, and the elastic mold is mounted on the connector and the wire to make the connector The connection between the plurality of terminals and the plurality of cores is located in the cavity of the elastic mold, and the liquid epoxy resin can be poured from the injection port on the side of the cavity, so that the liquid waterproof glue is coated on the plurality of terminals. After the plurality of core joints are formed, and the waterproof adhesive of the epoxy resin to be solidified into a solid epoxy resin, the elastic mold can be demolded to detach the elastic mold from the connector and the wire. And when the elastic mold is detached, a protective cover can be further formed on the outer surface of the connector, the wire and the epoxy resin to make a waterproof connector, thereby effectively saving the manufacturing environment. Costly labor and material costs, and ensure the quality and yield of manufacturing, so that the overall manufacturing cost is lower, thereby reducing the overall size, in order to further save material costs and enhance the appearance of beauty The utility of, Moreover, due to an external waterproof plastic epoxy is molded protective sleeve, through the protective sheath can further increase the water reaches The purpose of the function.

The second object of the present invention is that the water-repellent rubber of the liquid epoxy resin is poured into the cavity of the elastic mold and covered by the epoxy when the plurality of terminals of the connector are connected with the plurality of wires of the wire. The waterproof rubber of the resin is in a liquid state, so the waterproof rubber of the epoxy resin will be filled and infiltrated from the gap between the insulating seat and the plurality of terminals of the connector, and the epoxy resin can be solidified after being solidified. The purpose of the bonding strength between the insulating base and the plurality of terminals.

The third object of the present invention is that the inner wall surface of the cavity of the elastic mold is provided with a plurality of bumps at intervals, and the epoxy resin of the epoxy resin is formed when the waterproof glue of the epoxy resin is poured into the cavity. The surface is formed with a plurality of buckles at the plurality of bumps, and a protective sleeve can be formed on the exterior of the connector, the wire and the epoxy resin, and a plurality of buckles are formed inside the sleeve. The utility model can be used for forming the relative snap-fit positioning in the plurality of buckles of the waterproof glue extending into the epoxy resin, thereby improving the waterproof glue and protection of the epoxy resin by mutual interlocking and interference of the plurality of buckle grooves and the plurality of buckles. The combination strength of the suite, in order to avoid the slippery, detachment, etc. of the protective sleeve when the waterproof connector is used, thereby achieving the purpose of increasing the service life.

The fourth object of the present invention is that the elastic mold has anti-stick property, so when the waterproof rubber of the epoxy resin is solid in the cavity of the elastic mold made of the silicone material, the epoxy resin is waterproof. The glue will not be covered on the inner wall surface of the cavity, so that the elastic mold can be easily released from the mold, and the waterproof rubber of the epoxy resin will not be pulled or damaged by the adhesion of the inner wall surface of the cavity. In order to maintain the waterproof effect of the epoxy resin waterproof adhesive.

The fifth object of the present invention is that the elastic mold of the silicone material has better elasticity, so that the side of the elastic mold of the silicone material is bonded to the surface of the joint portion of the insulating seat. At the time, the elastic mold of the silicone material will be pressed against the joint portion of the insulating seat body to make the joint more closely, so that the liquid epoxy resin is poured from the injection port on the cavity side. When it is introduced, the waterproof glue of the epoxy resin which can effectively reduce the liquid is generated from the joint of the elastic mold and the insulating seat of the silicone material.

The sixth object of the present invention is that the injection port on the cavity side of the elastic mold of the silicone material is located around the wire, and when the waterproof adhesive of the liquid epoxy resin is poured from the injection port of the cavity, the liquid is liquid. The epoxy resin of the epoxy resin flows along the inner core of the wire and the inner wall surface of the cavity to prevent the waterproof adhesive of a large amount of liquid epoxy resin from directly hitting the connection between the plurality of terminals of the connector and the plurality of cores, thereby achieving good maintenance. The purpose of the electrical connection effect.

1‧‧‧Connector

11‧‧‧Insulated body

111‧‧‧ joints

112‧‧‧ docking slot

12‧‧‧ Terminal

121‧‧‧Connecting end

122‧‧‧plug end

2‧‧‧Wire

21‧‧‧ wire core

3‧‧‧Waterproof glue

31‧‧‧ buckle groove

4‧‧‧ protective cover

41‧‧‧Glosses

5‧‧‧Flexible mould

50‧‧‧ cavity

501‧‧‧Injection

502‧‧‧Bumps

51‧‧‧上模

52‧‧‧Down

A‧‧‧conductive terminal

B‧‧‧Insulated body

B1‧‧‧Segment

C‧‧‧Wire

C1‧‧‧ core wire

D‧‧‧ hollow cylinder

E‧‧‧ wrap

F‧‧‧ protective cover

The first figure is a three-dimensional appearance of the present invention.

The second drawing is a side cross-sectional view of the present invention.

The third figure is a manufacturing flow chart of the present invention.

The fourth figure is a three-dimensional appearance of the elastic mold of the present invention installed on the connector and the wire.

Figure 5 is a side cross-sectional view showing the injection of waterproof glue into the cavity of the elastic mold of the present invention.

Figure 6 is a side cross-sectional view showing the waterproof rubber of the present invention in a solid state and the elastic mold being detached.

Figure 7 is a side cross-sectional view of a conventional waterproof connector.

In order to achieve the above objects and effects, the technical means and the configuration of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first and second figures, which are respectively a perspective view and a side cross-sectional view of the present invention. As is clear from the figure, the present invention includes a connector 1, a wire 2, a waterproof glue 3 and a protective cover. 4, wherein the connector 1 has an insulating base 11 and has a joint portion 111 formed on one side of the insulating base 11 and abutting groove 112 on the other side, and is further disposed in the insulating base 11 The plurality of terminals 12 each have a connecting end 121 extending through the engaging portion 111 at one end thereof, and a plug end 122 extending into the mating slot 112 at the other end.

The wire 2 is internally provided with a plurality of cores 21 that are electrically connected to the connection ends 121 of the plurality of terminals 12.

The waterproof adhesive 3 can be an epoxy resin and is solid, and the waterproof adhesive 3 covers the joint of the plurality of terminals 12 and the plurality of cores 21, and a plurality of buckles 31 are arranged at intervals on the surface of the waterproof adhesive 3.

The protective cover 4 is covered on the outside of the connector 1, the wire 2 and the waterproof rubber 3, and the protective sleeve 4 is formed with a plurality of protruding buckles 41 for forming the embedded positioning in the plurality of buckle grooves 31 extending into the waterproof rubber 3.

Please refer to the second, third, fourth, fifth and sixth figures for the side view, the manufacturing flow chart, the three-dimensional appearance of the elastic mold mounted on the connector and the wire, and the elastic mold. A side cross-sectional view of the waterproof glue injected into the cavity and a side cross-sectional view of the waterproof rubber after being detached from the elastic mold, as is clear from the figure, when the manufacturing method of the waterproof connector of the present invention is utilized, Follow the steps below:

(101) First, the connection end 121 of the connector 1 through which the plurality of terminals 12 are electrically connected is electrically connected to the plurality of cores 21 of the wires 2.

(102) The elastic mold 5 made of the silicone material is installed on the outside of the connector 1 and the wire 2 such that the connection of the plurality of terminals 12 and the plurality of cores 21 is located in the cavity 50 of the elastic mold 5 of the silicone material.

(103) Further, the liquid epoxy resin 3 of the epoxy resin is poured from the injection port 501 of the cavity 50 side, and the liquid epoxy resin 3 is coated on the joint of the plurality of terminals 12 and the plurality of cores 21 .

(104) After the waterproof rubber 3 of the epoxy resin to be solidified is solidified into the waterproof epoxy resin 3 of the solid epoxy resin, the mold release operation can be performed to detach the elastic mold 5 from the connector 1 and the wire 2.

(105) The protective sleeve 4 (shown in the second figure) can be overmolded by using the plastic outside the connector 1, the wire 2 and the epoxy resin 3 of the epoxy resin (as shown in the second figure). The manufacture of the waterproof connector of the present invention.

In the above step (101), the connecting end 121 of the plurality of terminals 12 is preferably soldered to the plurality of cores 21 of the wire 2 to form an electrical connection state. However, in practical applications, crimping or puncturing may also be utilized. The electrical connection is formed by breaking or the like, but the connection end 121 of the plurality of terminals 12 is electrically connected to the plurality of cores 21 of the wires 2, and the connection manner can be changed according to actual applications or requirements, and This connection method is not the main point of the present invention, and is only briefly described herein for understanding.

Furthermore, the elastic mold 5 in the above step (102) may be made of a resilient material such as silicone, and may be composed of an upper mold 51 and a lower mold 52, and the connector 1 and the wire 2 are placed in the elastic mold 5. In the cavity 50, the joint portion 1 of the insulating base 11 portion 11 and a part of the wire 2 is located in the cavity 50, and can be pressed against the outer surfaces of the upper die 51 and the lower die 52 so that the upper die 51 and the lower die 52 are closely adjacent to the joint of the insulating base 11. At the surface of the portion 111, when the steps (103) and (104) are continued, the epoxy resin 3 of the epoxy resin will cover the portion of the joint portion 111 and the portion of the wire 2, so that the connector 1 and the wire 2 are The invention can be stably integrated into one body, so as to avoid the situation that the plurality of terminals 12 and the plurality of cores 21 in the waterproof rubber 3 of the epoxy resin are liable to cause poor contact or breakage during use, and the above-mentioned system can utilize an external fixing fixture ( The upper surface of the upper mold 51 and the lower mold 52 are pressed against the outer surface of the upper mold 51 and the lower mold 52 so that one side of the upper mold 51 and the lower mold 52 are closely abutted against the surface of the joint portion 111 of the insulating base 11 for execution steps. (103), (104), however, there are many ways to fix the upper mold 51 and the lower mold 52 of the elastic mold 5 of the silicone material, and the fixed extrusion method can be changed according to actual application or demand. Moreover, the fixed extrusion method is not the main point of the invention, and is only briefly described herein for understanding.

However, the injection port 501 on the side of the cavity 50 in the above step (103) is preferably located around the wire 2, and when the liquid epoxy resin 3 of the epoxy resin is poured from the injection port 501 of the cavity 50, The liquid epoxy resin 3 will flow along the inner core 21 of the wire 2 and the inner wall surface of the cavity 50, so as to avoid a large amount of liquid epoxy resin 3 directly hitting the connector 1 The terminal 12 is connected to the plurality of cores 21 to achieve the effect of maintaining a good electrical connection state.

In addition, when the waterproof adhesive 3 of the liquid epoxy resin is poured from the injection port 501 of the cavity 50 in the above step (103), the inner wall surface of the cavity 50 is provided with a plurality of bumps 502 at intervals, so that the step (104) When the elastic mold 5 of the silicone material is released from the mold, the corresponding surface of the waterproof rubber 3 of the epoxy resin is formed into a corresponding plurality of buckle grooves 31, however, the steps (105) When the protective cover 4 is formed by injection molding using the plastic on the connector 1, the wire 2 and the epoxy resin 3 of the epoxy resin, a plurality of knobs 41 are formed inside the protective cover 4 to extend into the protective cover 4 The relative snap positioning is formed in the plurality of buckles 31 of the epoxy resin 3 of the epoxy resin.

The present invention has the following advantages:

(1) When the plurality of terminals 12 of the connector 1 are electrically connected to the plurality of cores 21 of the wires 2, the elastic mold 5 made of a silicone material can be directly used to connect the plurality of terminals 12 to the plurality of cores 21 The waterproof rubber 3 forming the solid epoxy resin can be further formed by the injection molding method on the exterior of the connector 1, the wire 2 and the epoxy resin 3 of the epoxy resin, which is formed by the protective cover 4 compared with the prior art. In order to save the structural design of the hollow cylinder, the labor and material cost of manufacturing can be effectively saved, and the quality and yield of the manufacturing can be ensured, thereby making the overall manufacturing cost lower, and saving the use of hollow The cylinder can also reduce the overall volume, so as to further save the material cost and enhance the appearance of the appearance. In addition, since the epoxy resin 3 is externally formed with the protective cover 4, the protective cover 4 can be further used. Achieve the effect of increasing the waterproof function.

(2) The cavity 50 of the elastic mold 5 made of the silicone material is a waterproof rubber 3 which can be poured with a liquid epoxy resin from the injection port 501 of one side to cover the plurality of terminals 12 of the connector 1 and At the junction of the plurality of cores 21 of the wires 2, since the waterproof rubber 3 of the epoxy resin is in a liquid state, the waterproof rubber 3 of the epoxy resin penetrates from the gap generated between the insulating base 11 of the connector 1 and the plurality of terminals 12. In order to perform the filling effect, and after the waterproof rubber 3 of the epoxy resin is solidified, the bonding strength between the insulating base 11 and the plurality of terminals 12 can be increased.

(3) The inner wall surface of the cavity 50 of the elastic mold 5 made of the silicone material is provided with a plurality of bumps 502 at intervals, when the liquid waterproof rubber 3 is poured into the cavity 50, and waits After being solid, the surface of the epoxy resin 3 of the epoxy resin is formed with a plurality of buckle grooves 31 at the plurality of bumps 502. However, when the connector 1, the wire 2 and the epoxy resin 3 are externally utilized When the protective sleeve 4 is formed by injection molding, the inside of the protective sleeve 4 is formed with a plurality of buckles 41 for positioning relative to the embedded buckles in the plurality of buckles 31 of the waterproof rubber 3 extending into the epoxy resin. The interlocking and interference between the plurality of buckles 31 and the plurality of buckles 41 enhance the bonding strength between the epoxy rubber 3 and the protective sleeve 4, thereby preventing the protective sleeve 4 from slipping when the waterproof connector is in use. In order to achieve the effect of increasing the service life.

(4) When the waterproof rubber 3 is in a solid state in the cavity 50 of the elastic mold 5 made of the silicone material, the elastic mold 5 made of the silicone material has the anti-stick property, so the epoxy resin of the epoxy resin 3, that is, it will not be adhered to the inner wall surface of the cavity 50, so that the elastic mold 5 made of the silicone material is convenient for the demolding operation, and the epoxy resin 3 of the epoxy resin is not adhered to the inner wall surface of the cavity 50. The situation of pulling and damage is formed to achieve the purpose of maintaining the waterproof effect of the epoxy resin 3 of the epoxy resin.

(5) The elastic mold 5 made of the silicone material has better elasticity than the conventional metal mold, so that the side of the elastic mold 5 made of the silicone material is in contact with the surface of the joint portion 111 of the insulating base 11. At the same time, the elastic mold 5 made of the silicone material is pressed against the joint portion 111 of the insulating seat body 11, so that the joint portion is more closely and tightly sealed, so that the liquid epoxy resin waterproof rubber 3 When pouring from the injection port 501 on the side of the cavity 50, the waterproof rubber 3 of the liquid epoxy resin can be effectively reduced from the joint of the elastic mold 5 made of the silicone material and the insulating seat 11 to generate a flash.

(6) The injection port 501 on the side of the cavity 50 of the elastic mold 5 made of the silicone material can be located around the wire 2, so when the liquid epoxy resin 3 is from the cavity When the injection port 501 of 50 is poured, the liquid epoxy resin 3 of the liquid epoxy resin can flow along the inner wall 21 of the wire 2 and the inner wall surface of the cavity 50 to avoid a large amount of liquid epoxy resin. 3 directly hits the junction of the plurality of terminals 12 of the connector 1 and the plurality of cores 21, thereby achieving the effect of maintaining a good electrical connection state.

The above detailed description is intended to be illustrative of a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalents and modifications may be made without departing from the spirit of the invention. Changes are intended to be included in the scope of the patents covered by the present invention.

In summary, the waterproof connector of the present invention and the method for manufacturing the same according to the present invention can achieve the same effect and purpose. Therefore, the present invention is an invention with excellent practicability, and is an application for conforming to the invention patent. To file an application, I hope that the trial committee will grant the case as soon as possible to protect the inventor's hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions, the inventor will try his best to cooperate, and feel really good.

1‧‧‧Connector

11‧‧‧Insulated body

111‧‧‧ joints

112‧‧‧ docking slot

12‧‧‧ Terminal

121‧‧‧Connecting end

122‧‧‧plug end

2‧‧‧Wire

21‧‧‧ wire core

3‧‧‧Waterproof glue

31‧‧‧ buckle groove

4‧‧‧ protective cover

41‧‧‧Glosses

Claims (6)

A method for manufacturing a waterproof connector is implemented according to the following steps: (101) firstly connecting a connector of a plurality of terminals to electrically connect a plurality of wires of the wire; (102) and preparing a silicone material The prepared elastic mold is installed on the outside of the connector and the wire so that the connection between the plurality of terminals and the plurality of cores is located in the cavity of the elastic mold of the silicone material; (103) the liquid epoxy resin is further removed from the mold. The injection port on one side of the hole is poured, so that the waterproof epoxy resin of the liquid epoxy is coated on the joint of the plurality of terminals and the plurality of cores; (104) and the epoxy resin of the epoxy resin to be solidified into a solid epoxy resin After the waterproof glue, the demoulding operation is performed to disassemble the elastic mold of the silicone material from the connector and the wire; (105) and the outer cover of the connector, the wire and the epoxy resin are overmolded with a protective cover, and then Complete the manufacture of the waterproof connector. The method of manufacturing the waterproof connector of claim 1, wherein the connecting end of the plurality of terminals in the step (101) is a plurality of wire cores electrically connected to the wires by soldering, crimping or puncture. The manufacturing method of the waterproof connector according to claim 1, wherein the injection port of the elastic mold made of the silicone material in the step (103) is a cavity of the elastic mold which is located around the wire and made of silicone material. The inner wall surface is provided with a plurality of bumps. The method for manufacturing a waterproof connector according to claim 3, wherein the step (1) 04) The surface of the waterproof rubber of the solid epoxy resin is formed with a plurality of buckle grooves corresponding to the positions of the plurality of bumps of the cavity. The method of manufacturing the waterproof connector according to the first aspect of the invention, wherein in the step (105), a plurality of protruding buckles for positioning the plurality of buckles in the plurality of buckle grooves are formed inside the protective sleeve. The method for manufacturing a waterproof connector according to claim 1, wherein the outer portion of the waterproofing adhesive of the connector, the wire and the epoxy resin in the step (105) is formed by injection molding using a plastic.