CN102931510A - Jack contact element and manufacture method thereof - Google Patents

Abstract

The invention discloses a structure and a manufacturing method of a socket contact piece with high contact and high elasticity. The receptacle contact is used to be inserted into the receptacle socket of the plug-in, and includes a cylindrical body rolled from an integrally formed metal sheet. The cylindrical body includes several outer edges that contact the inner wall of the socket socket of the plug-in , and the connecting wall connected between the outer ribs, wherein the connecting wall is provided with an inwardly convex arc shape, and the connecting wall is provided with a plurality of grooves, the opening direction of the grooves is perpendicular to the direction of the outer ribs, and the grooves are equally spaced. The socket contact piece has high contact performance and high elasticity, and the socket contact piece has good high current passing capacity, simple structure, simple manufacturing method and low manufacturing cost.

Description

Receptacle contact and manufacturing method thereof

technical field

The invention relates to a new jack contact, in particular to a structure and a manufacturing method of a high-contact and high-elasticity jack contact, which are used in the field of conduction connection of power supply and signal.

Background technique

The jacks of the existing electrical connector contacts mainly adopt spring or reed structures, among which the more typical structures are crown spring jacks with the waist of the springs, and jacks with twisted stamped springs and press-fitting at both ends.

The current crown spring socket contacts are made by stamping and dividing the elastic metal sheet into several grid bars connected to the upper and lower ends, and then coiling and waisting the middle part so that each metal bar bends in the middle and shrinks toward the axis to form a The upper and lower ends are large and the middle is small. The inner surface of the crown spring socket of this structure is in contact with the surface of the pin at the waist of the elastic metal strip. Because of the structural limitation, it cannot contact the pin evenly and stably, resulting in a large insertion force and a small contact area. Disadvantages such as low contact performance.

Although the jack made by the latter technology has high contact performance, its socket connection method has large contact resistance and poor tensile resistance. The front and rear sockets are easily separated from the pressure point by tension, causing connection failures and accidents; There are many combined parts, and the volume cannot be further reduced, which is not conducive to the development of miniaturization and densification; the processing technology is complicated and the precision requirements are high, resulting in low product qualification rate and high cost; the shrapnel cannot be very thick in the limited space, making each The root shrapnel can hardly withstand a large current impact; the phenomenon of "broken wire" during use cannot be solved.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a jack contact and its manufacturing method, the jack contact has high contact and high elasticity, and the contact has a good ability to pass a large current and a simple structure , the manufacturing method is simple and the manufacturing cost is low.

In order to achieve the above object, the present invention provides a socket contact piece, which is used to be inserted into the socket hole sleeve of the plug-in, which includes a cylindrical body rolled from an integrally formed metal sheet. The special feature is that the The cylindrical body includes several outer ribs in contact with the inner wall of the hole sleeve, and a connecting wall connected between the outer ribs, wherein the connecting wall is provided with an inwardly convex arc shape.

Further, the butt joint gap between the two sides of the metal sheet of the cylindrical body is provided at the outer edge.

Further, parallel grooves are opened on the connecting wall, and the grooves separate the connecting wall to form several grid strips connected to adjacent outer edges.

Further, the opening direction of the grooves is perpendicular to the direction of the outer edges, and the grooves between the two outer edges are equally spaced.

Further, the transverse section of the cylindrical body is similar to a quadrangle or a hexagon.

The present invention also provides a method for manufacturing a socket contact, comprising the following steps:

a) The metal sheet is formed by stamping and blanking;

b) The two sides of the metal sheet are butt-rolled into a cylindrical shape, and a gap is formed between the two sides;

c) Forming the cylindrical body: forming an outer edge in contact with the inner wall of the socket socket of the insert and a connecting wall connected between the outer edges, so that the connecting wall has an arc convex inward toward the central axis of the cylindrical body;

Further, in the step a), several rows of parallel grooves are also opened, and the grooves are opened on the connecting wall mentioned in the step c).

Further, the opening direction of the grooves is perpendicular to the direction of the outer edge, and the grooves in each row are equally spaced.

Further, it also includes the step of fixing the formed cylindrical body through thermal process to prevent deformation.

The invention has the advantages of simple design structure, convenient plug-in and pull-out operation, not only has high contact area and low contact resistance connection, but also has a more compact structure than jacks of the same specification, and can produce different apertures in a larger application range The size of the jack, and can carry higher current and signal, can well meet the connector market that is increasingly demanding high reliability, high contact, high current load and lower manufacturing cost in today's world, and the production process is simple and the production cost is low. Relatively low, conducive to mass production.

Description of drawings

FIG. 1 is a schematic structural diagram of a socket contact in Embodiment 1 of the present invention.

FIG. 2 is a schematic cross-sectional view of FIG. 1 .

Fig. 3 is a diagram showing the use and assembly relationship of the socket contact in Embodiment 1 of the present invention.

Fig. 4 is a schematic cross-sectional view of the socket contact after assembly.

FIG. 5 is the stamped and flattened metal sheet of Embodiment 1. FIG.

Fig. 6 is a schematic structural diagram of a jack contact according to Embodiment 2 of the present invention.

FIG. 7 is a schematic cross-sectional view of FIG. 6 .

Fig. 8 is the flattened sheet metal of embodiment 2.

Detailed ways

In order to better illustrate the technical means adopted by the present invention and its effects, a detailed description will be given below in conjunction with the embodiments of the present invention and the accompanying drawings, wherein the same reference numerals always represent the same components.

Example 1

As shown in Figure 1, the socket contact piece 1 is used to be inserted into the socket hole sleeve of the plug-in, and includes a cylindrical body formed by an integrally formed metal sheet, and the cylindrical body is distributed with several contacts that contact the inner wall of the hole sleeve. Outer ribs 3, in this embodiment, there are four outer ribs 3, and the connecting walls connected between the outer ribs 3, the four connecting walls have an inwardly convex arc shape, so as to better contact with the pins; as can be seen in the figure, each Parallel grooves 2 are also opened on the surface connecting wall, and the groove 2 divides the connecting wall into several grid bars 4 connected between two adjacent outer edges. The grid bars 4 can make the contact piece 1 and the pin have a higher Contact; the opening direction of the groove 2 can form an angle with the direction of the outer edge 3. Preferably, the opening direction of the groove 2 is perpendicular to the direction of the outer edge 3, that is, at a right angle of 90 degrees; the distance between each groove 2 can be arbitrary Size, preferably, each groove 2 is equally spaced.

The schematic diagram of the transverse section of the receptacle contact 1 of this embodiment is shown in Figure 2. The transverse section is similar to a quadrilateral, and the quadrilateral includes four corners 31 that are in contact with the inner wall of the socket (that is, the outer edge 3 shown in Figure 1). cross-section), and the connecting side 5 connected between the corner sides (that is, the cross-section of the connecting wall shown in Figure 1), wherein the connecting side 5 has an inwardly convex arc shape. It can be understood that the arc of the corner side and the hole sleeve The contact effect is best when the curvature of the inner wall is the same.

As shown in Fig. 3 and Fig. 4, Fig. 3 is an assembly relationship diagram of the jack contact of the embodiment, and Fig. 4 is a transverse cross-sectional view after assembly. Install the contact piece 1 into the socket socket 81 of the plug-in 8, and the outer edge 3 of the contact piece 1 is in contact with the inner wall of the socket socket 81. If necessary, an inwardly convex structure can be provided at the port of the socket socket 81 , to prevent the contact piece 1 from falling out during the insertion and extraction of the pin 7, and then insert the pin 7 into the socket hole sleeve 81 that has been installed on the plug-in 8, and the inner convex arc-shaped grid bar 4 of the contact piece 1 elastically contacts the plug-in The pin 7 is properly bent and deformed outward under the extrusion of the pin 7, which increases the contact area; the contact piece 1 is in the cavity of the jack hole sleeve 81 as a whole, and the length of the cylindrical axis of the pin 7 inserted into the contact piece 1 is longer than The overall length of the contact piece 1 is large. The socket form of the socket contact piece of this design has a large relative contact surface, high contact performance, and long mechanical life; there is no phenomenon of poor contact such as shaking and separation in a vibration environment.

The manufacturing method of the receptacle contact in this embodiment includes the following steps: Referring to FIG. 5 , first, the metal sheet is formed by stamping and blanking, and the overall shape is rectangular, and four rows of parallel grooves 2 are punched out to form the corresponding outer edge 3. The area and the grid bar 4 connected between the outer ribs 3, the present embodiment has four outer ribs 3, as can be seen in the figure, the width of both sides is equal to half of the outer ribs 3 during punching; then along the vertical direction of the outer ribs Roll the rectangular metal sheet into a cylindrical body, that is, the two sides are butted, and a gap is formed between the two sides, which does not need to be connected. In this embodiment, the metal sheet is rectangular, so the upper and lower dimensions of the cylindrical body are the same; Then extrude the connecting wall connected between the outer edges 3 of the cylindrical body, that is, the grid bar 4 separated by the groove 2, so that the grid bar 4 has an arc convex inward towards the central axis of the cylindrical body, and this process can be performed by Continuous die stamping forming; the cylindrical body can be further fixed and formed by heat treatment process. Wherein, the opening direction of the groove 2 can form an angle with the direction of the outer edge 3, preferably, the opening direction of the groove 2 is perpendicular to the direction of the outer edge 3, that is, at a right angle of 90 degrees; the distance between each groove 2 can be any size , preferably, the grooves 2 are equally spaced, and the final contact structure is shown in FIG. 1 . The socket contacts produced by this process can ensure that they have excellent structure, stable and reliable contact retention and good electrical conductivity. During the process of inserting and pulling out the pins, the contacts will not recover and deform.

Example 2

As shown in FIG. 6 , it is a schematic diagram of the structure of the jack contact in Embodiment 2 of the present invention. The socket contact piece 6 of this embodiment is similar to that shown in Figure 1, and includes a cylindrical body formed by integrally formed metal sheets. The cylindrical body is distributed with several outer ribs 63 that contact the inner wall of the socket. There are six outer ribs 63 and connecting walls connected between the outer ribs 63, wherein the connecting wall has an inwardly convex arc shape, and several grooves 62 are opened on the connecting wall, and several grooves 62 divide the connecting wall into several The grid bar 64 can make the contact member 6 and the pin have better contact; the opening direction of the groove 62 can form an angle with the direction of the outer edge 63, preferably, the opening direction of the groove 62 is perpendicular to the direction of the outer edge 63, That is, it forms a 90-degree right angle; the distance between the grooves 62 can be any size, and preferably, the grooves 62 are equally spaced.

The schematic diagram of the transverse section of the jack contact 6 of this embodiment is shown in Figure 7. The transverse section is hexagonal, and the hexagon includes six corners 65 that are in contact with the inner wall of the hole sleeve (that is, the outer edges shown in Figure 6 63), and the connecting side 66 connected between the corner sides (that is, the cross-section of the connecting wall shown in FIG. 6 ), wherein the connecting side 66 has an inwardly convex arc shape.

The assembly relationship of the socket contact in this embodiment is similar to that shown in Figure 3, and the quadrilateral socket contact 1 shown in Figure 3 can be replaced with the hexagonal socket contact 6 of this embodiment, here No longer.

The manufacturing method of the receptacle contact in this embodiment includes the following steps, which are the same as those in Embodiment 1. For the differences, see FIG. The outer edges 63 and the connecting walls connected between the outer edges 63 are separated by grooves 62 into grid bars. Other steps are the same as in Embodiment 1, and will not be repeated here.

To sum up, the socket contact of the present invention has a simple design and structure, and is convenient for plugging and unplugging operations. When in use, it not only has a high contact area and a low contact resistance connection, but also has a simpler structure than a socket of the same specification, and is easier to manufacture. Jacks with different apertures are produced in a wide range of application, and can carry higher current and signals, which can well meet the increasing requirements of the world today for high reliability, high contact, high current carrying and smaller connector market. , and the manufacturing method of the jack contact of the present invention is simple, the manufacturing cost is relatively low, and it is beneficial to mass production.

It should be understood that the present application is not limited to the two cases where the contact section is quadrilateral and hexagonal, but also includes other polygonal shapes, such as pentagonal, heptagonal, etc. The above are only other preferred embodiments, and should not be understood To limit the scope of the invention. All modifications and equivalent arrangements included in the spirit and scope of the claims are included in the scope of the present invention.

Claims (10)

1. A socket contact piece, used for inserting in the socket hole sleeve of the plug-in, comprising a cylindrical body rolled from an integrally formed metal sheet, characterized in that the cylindrical body includes several The outer edge that the inner wall touches, and the connecting wall connected between the outer edges, wherein the connecting wall has an inwardly convex arc shape. 2 . The jack contact according to claim 1 , wherein the butt joint gap between two sides of the metal sheet of the cylindrical body is provided at the outer edge. 3 . 3. The receptacle contact according to claim 1 or 2, characterized in that parallel grooves are opened on the connecting wall, and the grooves separate the connecting wall to form several grids connected to adjacent outer edges. strip. 4. The receptacle contact according to claim 3, wherein the opening direction of the groove is perpendicular to the direction of the outer edge. 5. The receptacle contact according to claim 3, wherein the grooves between the two outer ribs are equally spaced. 6 . The receptacle contact according to claim 5 , wherein the transverse section of the cylindrical body is similar to a quadrangle or a hexagon. 7 . 7. A method for manufacturing a jack contact, comprising the following steps: a) The metal sheet is formed by stamping and blanking; b) The two sides of the metal sheet are butt-rolled into a cylindrical shape, and a gap is formed between the two sides; c) Forming the cylindrical body: forming an outer edge in contact with the inner wall of the socket socket of the insert and a connecting wall connected between the outer edges, so that the connecting wall has an arc convex inward toward the central axis of the cylindrical body. 8 . The manufacturing method according to claim 7 , wherein, in the step a), several rows of parallel grooves are also opened, and the grooves are opened on the connecting wall described in the step c). 9. The manufacturing method according to claim 8, wherein the opening direction of the grooves is perpendicular to the direction of the outer edge, and the grooves in each row are equally spaced. 10 . The manufacturing method according to any one of claims 7 to 9 , further comprising a step of fixing and forming the shaped cylindrical body through a thermal process. 11 .

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