WO2019178808A1 - Pin connector and method for preparing same - Google Patents

Abstract

A PIN connector, comprising a PIN (1) and a fastening assembly (2) provided at the periphery of the PIN. The PIN comprises a PIN body (11), and a first contact end (12) and a second contact end (13) respectively provided at both ends of the PIN body. The fastening assembly comprises a first fastener (21) and a second fastener (22) connected to the first fastener. The first fastener is provided adjacent to the first contact end, and the second fastener is provided adjacent to the second contact end. A method for preparing a PIN connector comprises: preparing a plurality of PINs; preparing a first fastener by means of metal injection molding; providing the plurality of PINs and the first fastener in a mold corresponding to a second fastener, and preparing the second fastener by means of injection molding, so that the second fastener is connected to the plurality of PINs and the first fastener to prepare the PIN connector. The method for preparing the PIN connector is simple in process and high in production efficiency, and the prepared PIN connector can effectively avoid the PIN from loosening.

Description

PIN pin connector and preparation method of PIN pin connector Technical field

The present invention relates to a PIN pin connector, and more particularly to a PIN pin connector for connecting a power source and a wearable product for charging a wearable product and a method of manufacturing the same.

Background technique

Wearable devices are typically powered up during use and often require performance for a variety of different applications. Taking a commonly used watch as an example, waterproofing is the basic configuration of a watch, and the charging interface of the watch is usually caused by water splashed on the watch or water vapor around the watch entering the watch. Water or water vapor entering the watch will cause the parts inside the watch to rust, affecting the quality of the time, and even losing the value of use.

technical problem

The charging connector of the watch is generally composed of a separately formed PIN pin (a metal material used for electrical transmission in the connector) and a waterproof ring. The assembly process is complicated, the cost is high, and the product size is large and the consistency is poor. The charging connector produced by the combination may have cracks or deformation during the long-term insertion and removal process, and cannot meet the requirements of the wearable device requiring deep waterproofing. Therefore, it is necessary to provide a technical means to solve the above drawbacks.

Technical solution

The object of the present invention is to overcome the defects of the prior art, and to provide a PIN pin connector and a method for preparing the PIN pin connector, so as to solve the problem that the charging connector in the prior art cannot achieve deep waterproofing.

The present invention provides a PIN pin connector for connecting a power source and a wearable product for charging a wearable product, the connector comprising a PIN pin and a fastening component disposed on an outer circumference of the PIN pin, the fastening component Fixing the PIN pin;

The PIN pin includes a PIN pin body and a first contact end and a second contact end respectively disposed at two ends of the PIN pin body;

The fastening assembly includes a first fastener and a second fastener coupled to the first fastener, the first fastener being disposed adjacent to the first contact end and the second fastener being disposed adjacent to the second contact end.

Preferably, the number of PIN pins is several.

Preferably, the first contact end is provided with a concave structure recessed in a plane of the first contact end.

Preferably, the first fastener is a metal member, the metal member is formed by metal injection molding; the second fastener is a plastic member, and the plastic member is obtained by injection molding.

Preferably, the second fastener comprises two first cover structures and a second cover structure connected to each other, and the metal member, the first cover structure and the second cover structure are sequentially disposed in the direction of the second contact end .

Preferably, the connector further includes at least one protrusion disposed on the second fastener and extending in a direction of the second contact end.

Preferably, the connector further includes a seal disposed through the second contact end and disposed in conformity with the second cover structure.

Preferably, the raised portions are arranged side by side with the PIN pin.

Preferably, the outer peripheral surface of the first fastener is provided with at least one hand-held portion, and the at least one hand-held portion protrudes from the outer peripheral surface of the first fastener.

The invention also provides a preparation method of a PIN pin connector, the preparation method comprising the following steps:

Preparing a plurality of PIN pins;

Producing a first fastener by metal injection molding;

A plurality of PIN pins and a first fastener are placed in the mold, and a second fastener is obtained by injection molding to connect the second fastener with the plurality of PIN pins and the first fastener. PIN pin connector.

In summary, a PIN pin connector includes a PIN pin and a fastening component disposed on an outer circumference of the PIN pin, the fastening component is configured to fix the PIN pin; the PIN pin includes a PIN pin body and a first end respectively disposed at the two ends of the PIN pin body a contact end and a second contact end; the fastening assembly includes a first fastener and a second fastener coupled to the first fastener, the first fastener being adjacent to the first contact end, the second fastener Adjacent to the second contact end.

A method for preparing a PIN pin connector includes the steps of: preparing a plurality of PIN pins; preparing a first fastener by metal injection molding; placing a plurality of PIN pins, a first fastener, and a second fastener In the corresponding mold, a second fastener is prepared by injection molding to connect the second fastener with the plurality of PIN pins and the first fastener to obtain a PIN pin connector.

Beneficial effect

Compared with the prior art, the PIN pin connector provided by the invention has few parts, small volume, simple structure and low cost, and is easy to realize automatic production and assembly. The preparation method of the PIN pin connector is simple in process and high in production efficiency. The PIN needle connector obtained by the above preparation method has a stable PIN needle fixing effect, and can effectively avoid the phenomenon that the PIN needle is easily loosened during use or after encountering a strong impact.

DRAWINGS

FIG. 1 is a schematic structural diagram of a PIN pin connector according to a preferred embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a PIN pin connector according to a preferred embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a PIN pin connector according to a preferred embodiment of the present invention.

4 is a schematic diagram of a PIN pin connector according to a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a PIN pin connector according to a preferred embodiment of the present invention.

FIG. 6 is a flowchart of a method for preparing a PIN pin connector according to a preferred embodiment of the present invention.

FIG. 7 is a circuit schematic diagram of a forward and reverse insertion control circuit of a PIN pin connector according to a preferred embodiment of the present invention.

Wherein, 1, PIN needle, 11, PIN needle body, 12, first contact end, 13, second contact end, 2, fastening assembly, 21, first fastener, 22, second fastener, 221 , first cover structure, 222, second cover structure, 23, seal, 3, hand-held portion, 4, boss, 40, port module, 50, charging module, 60, communication module.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 , 2 and 3 illustrate a preferred embodiment of the present invention, which provides a PIN pin 1 connector for connecting a power source and a wearable product for charging a wearable product. The connector includes a PIN pin 1 and a fastening component 2 disposed on the outer circumference of the PIN pin 1, the fastening component 2 is used to fix the PIN pin 1;

As shown in Figure 2, the PIN pin 1 includes a PIN pin body 11 and a first contact end 12 and a second contact end 13 respectively disposed at the ends of the PIN pin body 11;

As shown in FIG. 1 , the fastening component 2 includes a first fastener 21 and a second fastener 22 connected to the first fastener 21 . The first fastener 21 is adjacent to the first contact end 12 , The two fasteners 22 are adjacent to the second contact end 13 .

Specifically, the PIN pin 1 is a key component in the electrical connector, and the PIN pin 1 should have excellent electrical conductivity in order to enable stable charging of the object to be charged. Functionally, the PIN pin 1 is an electrical contact component. Therefore, copper alloys widely used in the fields of integrated circuit lead frames, electrical contact materials, and contact wire materials can be selected for materials such as high strength and electrical conductivity. Sexual Cu-Cr-Zr alloy. However, based on the practical application of the wearable product, in the present embodiment, the PIN pin 1 is preferably prepared from a low-cost and widely-sourced hardware, and the hardware is preferably 316L stainless steel.

The PIN pin 1 is a conductive member and is not convenient for direct use, and needs to be fixed in other components to ensure its safety. The cross section of the PIN needle body 11 may be any shape such as a circle, a rectangle or a diamond; the size of the cross section is not particularly limited, but since the connector itself is small in size, the space for placing the PIN needle body 11 is limited, if the PIN The average size of the cross section of the needle body 11 is large, and the number of the PIN needle body 11 is limited. In addition, the first contact end 12 at both ends of the PIN pin body 11 is exposed from the upper end of the fastening assembly 2 for connection with a mating plug (for example, a USB plug); the second contact end 13 is connected to the forward and reverse insertion control circuit. So that the connector can be connected to the circuit in the forward or reverse direction, and the charging function can be realized in both the forward and reverse insertion situations. It is worth mentioning that both the first contact end 12 and the second contact end 13 are subjected to a slick process.

In the present embodiment, the number of PIN pins 1 is several.

Specifically, a conventional USB (Universal Serial Bus) jack generally uses four PIN pins 1. This type of connector is bulky and cannot meet the demand for miniaturization in the current digital age. In order to effectively reduce the footprint of the PIN pin 1 in advance of ensuring its electrical conduction or other signal conduction, three PIN pins 1 are preferred in this embodiment.

In this embodiment, the first contact end 12 is provided with a concave structure recessed in a plane of the first contact end 12.

It should be noted that the concave structure is designed on the first contact end 12 in order to increase the contact surface between the PIN pin 1 and the power source or the component to be charged, so that the stability of charging is better.

In this embodiment, the first fastener 21 is a metal member, the metal member is formed by metal injection molding; the second fastener 22 is a plastic member, and the plastic member is obtained by injection molding.

Specifically, the first fastener 21 is a foil frame member and the second fastener 22 is a plastic filler. Although parts prepared by metal injection molding often have defects such as uneven density distribution, surface flow marks, cracks and connecting lines, which affect the appearance and even affect the use of parts, metal injection molding technology has unique advantages in the preparation of sheet frame parts. The thin structure prepared by the technology has uniform structure and ideal molding effect. The plastic is usually a hot liquid crystal polymer in the composition. As a functional material, the thermal liquid crystal polymer has unique injection molding properties such as high strength, high modulus, high temperature resistance and good electrical insulation. The liquid crystal polymer is in the molding process. The microstructure formed determines the macroscopic mechanical properties to a large extent. Injection molding can be used to prepare the microstructure with complete microstructure and uniform distribution by effectively controlling the flow properties of the hydrothermal fluid and precisely controlling the flow time. Pieces. Therefore, in the embodiment, the metal member corresponding to the first fastener is obtained by metal injection molding, and the plastic member corresponding to the second fastener is obtained by injection molding.

It should be noted that the metal parts mentioned here are alloys in materials, and carbon steel or galvanized steel sheets are preferred here; plastic parts are made of materials such as polyethylene or polypropylene and various organic solvents are added, here Preference is given to polycarbonate and glass reinforced polypropylene.

In the present embodiment, the second fastener 22 includes two first cover structures 221 and a second cover structure 222 that are connected to each other, and the metal member, the first cover structure 221 and the second cover structure 222 are The second contact ends 13 are arranged in the direction of one another.

In the present embodiment, the connector further includes at least one boss 4 which is disposed on the second fastener 22 and extends in the direction of the second contact end 13.

It should be noted that, in this embodiment, the bump 4 is also connected to the forward and reverse plug control circuit connected to the second contact end 13 for signal transmission. The action of the boss 4 involves a fixed action and an electrical connection.

Specifically, the raised portion 4 herein may be integrally formed with the second fastener 22, the height of which is not higher than the height of the second contact end 13 of the PIN pin 1; the convex portion 4 may be wedge-shaped, cylindrical or polygonal as a whole. In the case of a cylinder or the like, a wedge shape is preferred here, wherein the cross section of the projection 4 tapers in the direction of the second contact end 13 of the PIN pin 1, which is mainly used to strengthen the connection of the PIN pin 1 during operation. Firmness.

In the present embodiment, as shown in FIG. 3, the connector further includes a sealing member 23 that passes through the second contact end 13 and is disposed in contact with the second cover structure 222.

Specifically, the sealing member 23 is fixed on the second cover structure 222 by using glue; the sealing member 23 is rubber-selective on the material, but the rigidity of the rubber is low, and the sealing member is easily worn during use, thereby causing the sealing failure. In order to secure a long-term sealing effect, a metal rubber material excellent in mechanical properties can be preferably used.

In the present embodiment, the bosses 4 are arranged side by side with the PIN pin 1.

Specifically, the bosses 4 are arranged in the vicinity of the PIN pin 1, and may be arranged on the same line as the PIN pin 1 or the PIN pin 1. For example, in the case of three PIN pins 1, the three PIN pins 1 may be The rows of layouts may also be arranged in a triangle shape, and the three PIN pins 1 are regarded as a whole: when the number of the convex portions 4 is one, the convex portion 4 may be disposed at any position near the structure of the whole PIN needle 1; When the number of the bosses 4 is two, the two bosses 4 may also be disposed at any vicinity of the structure of the overall PIN pin 1; when the number of the bosses 4 is more than two, the bosses 4 It may be arranged on a circumference centered on the structure of the integral PIN pin 1. The boss portion 4 is for better fixing the PIN pin 1 that has been connected. In practical applications, the number of the boss portions 4 is not more than two; in order to facilitate the processing of the boss portion 4, preferably, the protrusion The portion 4 is arranged side by side with the PIN pin 1, and the number of the PIN pins 1 is three and is in a straight line in the layout manner. At this time, the boss portion 4 is located at both ends of the above three PIN pins 1.

In the present embodiment, at least one hand-held portion is provided on the outer circumferential surface of the first fastener 21, and at least one hand-held portion protrudes from the outer circumferential surface of the first fastener 21.

Specifically, referring to FIG. 4, FIG. 5, FIG. 4 and FIG. 5, reference drawings of the PIN pin connector shown in FIG. 1-3 above are shown.

FIG. 6 shows a preferred embodiment of the present invention. The embodiment provides a method for preparing a connector based on the PIN pin 1 described above. The preparation method includes the following steps:

Preparing a plurality of PIN pins 1;

Making a first fastener 21 by metal injection molding;

A plurality of PIN pins and a first fastener 21 are placed in a mold corresponding to the second fastener 22, and a PIN pin connector is produced by injection molding.

Specifically, in the metal injection molding mold, the first fastener 21 is prepared by metal injection molding, and then the first fastener 21 and the plurality of PIN pins are placed and fixed in a plastic mold, and molded by in-mold molding. The second fastener 22 is formed by molding.

The forming of the second fastener 22 can be divided into three steps: when the height of the injection molding is close to the height of the first fastener 21, the transition piece is passed through the second contact end 13 to the edge of the first fastener 21 The injection molding is continued to obtain the first cover structure 221 and the second cover structure 222; the seal 23 is mounted on the outer end surface of the first cover structure 221 by using an adhesive such as glue, and the seal 23 passes through the second contact. End 13.

In summary, a PIN pin 1 connector includes a PIN pin 1 and a fastening component 2 disposed on the outer circumference of the PIN pin 1. The fastening component 2 is used to fix the PIN pin 1; the PIN pin 1 includes a PIN pin body 11 and is separately provided. a first contact end 12 and a second contact end 13 at opposite ends of the PIN pin body 11; the fastening assembly 2 includes a first fastener 21 and a second fastener 22 coupled to the first fastener 21, the first tight The firmware 21 is adjacent to the first contact end 12 , and the second fastener 22 is adjacent to the second contact end 13 .

A method for preparing a PIN pin 1 connector includes the steps of: preparing a plurality of PIN pins 1; preparing a first fastener 21 by metal injection molding; placing a plurality of PIN pins, a first fastener 21 in the same In the mold corresponding to the two fasteners 22, a PIN pin connector is produced by injection molding.

Compared with the prior art, the PIN pin connector provided by the invention has a small number of parts, a simple structure and a low cost, and is easy to realize automatic production and assembly. The preparation method of the PIN pin connector is simple in process and high in production efficiency, and the above preparation method is adopted. The PIN pin connector in the obtained PIN pin connector has a stable fixing effect, and can effectively prevent the PIN pin from being loosened during use or after encountering a strong impact.

In another embodiment, in the PIN pin connector, the PIN pin 1 is a pin, including: a first power pin VCC, a first digital signal pin D+, and a second digital signal pin D-; The starting portion 4 is the second power supply pin GND.

It should be noted that the order of configuration of the three PIN pins 1 is not limited, and may be determined according to actual conditions. Illustratively, the second digital signal pin D- is placed in the middle, and the first power pin VCC and The first digital signal pin D+ is placed at both ends.

Preferably, in the PIN pin connector, the forward and reverse insertion control circuit is configured to perform detection of forward and reverse insertion, and the switching port enables the USB interface to operate normally in the case of reverse insertion. The forward and reverse insertion control circuit is as shown in FIG. 7, and specifically includes:

Port module 40, connected to the PIN pin 1 and two raised portions 4;

The charging module 50 is connected to the port module 40, and is configured to determine whether the USB interface supporting the forward and reverse insertion is positive or negative when the terminal device connects the matched USB plug through the USB interface supporting the forward and reverse insertion. Inserting, and implementing charging of the terminal device;

The communication module 60 is connected to the port module 40, and is configured to implement the terminal according to the judgment result of the charging module 50 when the terminal device connects the matched USB plug through the USB socket supporting the forward and reverse insertion. Communication between the device and an external USB device.

The port module 40 includes five contact elastic pieces 41 corresponding to the three PIN pins 1 and the two convex portions 4 .

A PIN pin connector provided by an embodiment of the present invention can firstly make the structure of the USB interface smaller by setting the power pin GND of the USB interface on the outer casing, and solve the problem that the USB interface occupies a large space, and then pass the positive and negative The plug-in control circuit detects the input signal of the pin of the USB interface, and switches the I/O port, so that the USB interface can normally perform data communication and charging in the case of forward and reverse insertion, which greatly facilitates the user. The use of the user has effectively improved the user experience.

The above is only an example and description of the present invention, and various modifications or additions to the specific embodiments described may be made by those skilled in the art or may be replaced by similar methods, without departing from the invention or The scope defined by the claims should fall within the scope of protection of the present invention.

Claims (10)

1. A PIN pin connector for connecting a power source and a wearable product for charging a wearable product, wherein the connector includes a PIN pin and a fastening component disposed on an outer circumference of the PIN pin, The fastening component is configured to fix the PIN needle;

   The PIN pin includes a PIN pin body and a first contact end and a second contact end respectively disposed at two ends of the PIN pin body;

   The fastening assembly includes a first fastener and a second fastener coupled to the first fastener, the first fastener being adjacent to the first contact end, the second tight The firmware is adjacent to the second contact end.
2. The connector of claim 1 wherein the number of PIN pins is a plurality.
3. The connector according to claim 1, wherein said first contact end is provided with a concave structure recessed in a plane of said first contact end.
4. The connector according to claim 1, wherein said first fastener is a metal member, said metal member is formed by metal injection molding; said second fastener is a plastic member, said plastic The parts are produced by injection molding.
5. The connector according to claim 4, wherein said second fastener comprises two first cover structures and a second cover structure connected to each other, said metal member, said first cover The structure and the second cover structure are sequentially disposed in a direction toward the second contact end.
6. The connector according to claim 1, wherein said connector further comprises at least one boss, said boss being disposed on said second fastener and toward said second contact end Extend in the direction.
7. The connector of claim 5 wherein said connector further includes a seal disposed through said second contact end and disposed in engagement with said second cover structure.
8. The connector according to claim 6, wherein said boss is disposed side by side with said PIN pin.
9. The connector according to claim 1, wherein said first fastener has at least one hand-held portion on an outer peripheral surface thereof, said at least one hand-held portion protruding from a periphery of said first fastener surface.
10. The method for preparing a PIN pin connector according to any one of claims 1 to 9, comprising the steps of:

    Preparing a plurality of PIN pins;

    Producing a first fastener by metal injection molding;

    Placing a plurality of PIN pins and a first fastener in a mold corresponding to the second fastener, and preparing a second fastener by injection molding to make the second fastener and the plurality of A PIN pin and the first fastener are connected to form a PIN pin connector.