CN101510639A - Plug contact member and socket contact member of power supply connector - Google Patents

Abstract

The invention relates to a male end contact and a female end contact of a power connector. The male end contact is composed of a plate-shaped male plug at the front and a pair of planar plates spaced apart from each other and parallel to each other at the rear. The plane boards are formed by overhanging from the tail end of the plate-shaped male plug to two sides respectively, and the lower edges of the two plane boards are respectively provided with at least one terminal pin. The female end contact piece includes a pair of mutually spaced, parallel and opposite planar plates, and the elastic cantilever extending from the same end of the two planar plates is arranged opposite to each other, and the plate-shaped male plug of the male end contact piece is formed between the two elastic cantilever arms. In the mating space, the free ends of the two elastic cantilevers are far away from each other to form the insertion port of the male end contact; each elastic cantilever is provided with at least one concave arc-shaped contact part from the root of the arm to the free end, when the male end contact is inserted and mated After the space, the two elastic cantilevers elastically clamp the male end contact piece; the lower edges of the two planar plates are respectively provided with at least one terminal pin.

Description

Male and female contacts for power connectors

technical field

The invention relates to a power connector for installation and use on a printed board, in particular to a male end contact and a female end contact of the power connector.

Background technique

The power connector suitable for printed board installation is a connector that carries a large current. It transmits a large current through the mating of the internally inserted male end contact and the female end contact. During the current transmission process, It is required that the electrical contact between the male end contact and the female end contact is reliable after mating, and the contact resistance is as small as possible. At the same time, it is required to have a heat dissipation structure to meet the heat reduction and good heat dissipation effect in the process of large current transmission, to achieve control The purpose of temperature rise. At present, this type of power connector has a variety of structural forms, and the structures of the corresponding male and female contacts and the insertion methods of the two are also different, but basically all of them can meet the above requirements. When using, you can choose a suitable power connector according to different installation environments and usage needs. Male and female contacts with different structures and mating modes are assembled with corresponding insulators to form a variety of power connectors, which provides convenience for users to choose.

Contents of the invention

The purpose of the present invention is to provide a new structure of a power connector male end contact that meets the requirements of the above contact. At the same time, the present invention also provides a new female contact of the power connector that meets the requirements of the above-mentioned contact, and the female contact can be matched with the male contact of the present invention.

The technical solution of the male end contact of the power connector provided by the present invention is: the male end contact of the power connector, which is composed of a plate-shaped male plug at the front and a pair of flat, parallel and opposite flats at the rear. The two planar plates are formed by hanging from the tail end of the plate-shaped male plug to both sides respectively, and the lower edges of the two planar plates are respectively provided with at least one terminal pin.

The plate-shaped male plug has at least one heat-dissipating slit arranged in the front and rear directions, and the heat-dissipating slit penetrates the plate-shaped male plug and extends to the plane plate.

On the outer board surfaces of the two plane boards, there are anti-retreat card platforms.

Both the upper and lower edges of the two plane plates have mating positioning edges protruding from the corresponding edges of the plate-shaped male plug.

The plate-shaped male plug is composed of an independent plate, and the rear end of the independent plate is connected as a whole with the front ends of the two plane plates.

The plate-shaped male plug is composed of a bent plate part bonded to two side wall plates, and the two ends of the rear part of the bent plate part are correspondingly connected with the front ends of the two planar plates.

The technical solution of the female end contact of the power connector provided by the present invention is: the female end contact of the power connector. The extended elastic cantilevers are arranged opposite to each other, forming an insertion space for the male contact plate-shaped male plug between the two elastic cantilevers, and the free ends of the two elastic cantilevers are far away from each other to form the insertion port of the male end contact; At least one concave arc-shaped contact portion is provided from the root of the arm to the free end, and the number of concave arc-shaped contact portions on the two elastic cantilevers is equal and arranged one by one. The shortest distance between each set of opposite concave arc-shaped contact portions They are all less than the thickness of the matching male-end contact plate-shaped male plug. When the male-end contact is inserted into the insertion space, the two elastic cantilever elastically clamp the male-end contact plate-shaped male plug; the lower edges of the two flat plates Each is provided with at least one terminal pin.

Both elastic cantilevers have at least one split hole arranged in the front and rear directions.

On the outer surface of the two planar plates, there are anti-retraction card platforms.

The front sections of the upper and lower edges of the two planar plates are the insertion positioning edges of the corresponding edges of the protruding elastic cantilever, and the rear sections are connected as a whole by a connecting plate.

By adopting the male end and female end contact pieces of the present invention, multiple contact pieces can be inserted in a certain length of insulating housing, which improves the installation density of the contact pieces in the insulating housing, realizes integration, and facilitates the miniaturization of instruments and equipment. Foundation. In the present invention, after the tabular male plug of the male contact is inserted into the mating space of the female contact, elastic clamping of the tabular male plug of the male contact is performed through the concave arc-shaped contact parts of the two elastic cantilevers, realizing Current-carrying; when there are two or more concave arc-shaped contact parts of the female end contact, each set of concave arc-shaped contact parts elastically clamps the male end during the insertion process of the male end and the female end contact. The order of the contacts is different, so that the inner concave arc-shaped contact part that is actually clamped and conducted can be realized to protect the inner concave arc-shaped contact part that is easily caused by the deformation of the inner concave arc-shaped contact part at the initial stage of mating. The elastic clamping force ensures the reliability of the electrical connection of the male end contact piece and the small contact resistance, and further prevents abnormal heat generation caused by poor contact.

The main bodies of the male and female contacts of the present invention are composed of two separate planar plates, and the tails of the two contacts are all open, so that the non-contact portion current-carrying surfaces of the two contacts are equally divided into two parts and Printed board connection, in actual use, is conducive to current shunting and hollow heat dissipation.

On the one hand, after being inserted into the female contact, the heat dissipation space between the male contact and the female contact flat plate can be connected to form a heat dissipation channel. , which is beneficial to convective heat dissipation during the current-carrying process; on the other hand, the overall plate surface of the plate-shaped male plug can be divided into several parts, which can effectively improve the local poor contact with the female end contact caused by the deformation of the overall plate surface. The situation occurs, thereby ensuring the reliability of electrical contact after the male and female contacts are mated.

After the receptacle contact is provided with split holes on its two elastic cantilevers, the split holes divide the concave arc-shaped contact part of the elastic cantilever from long-line contacts in the width direction into several short-line contacts. The resulting partial poor contact or partial contact failure is improved, and the reliability of electrical contact after mating of the male end and the female end contact pieces is improved.

The male end and female end contacts are provided with anti-retraction card platforms on their flat plates, which are designed to cooperate with the anti-retraction card slots on the insulating housing after the contacts are inserted into the corresponding insulating housing, so as to prevent the contacts from exiting the insulating housing. The purpose of improving the reliability of the electrical connection.

When the male end and the female end contact piece of the present invention are plugged and installed with the corresponding insulating housing, the mating and positioning of the lower edge on the plane plate and the corresponding slot on the insulating housing are used to insert the contact piece firmly. The two flat boards are fixed and strengthened by the ground clamp, and the terminal pins are not easy to shift and deform, which facilitates the smooth insertion of the assembled connector product and the printed board.

Description of drawings

Fig. 1 is a schematic structural view of a male end contact of a power connector of the present invention;

Fig. 2 is a schematic structural diagram of another form of the male end contact of the power connector of the present invention;

Fig. 3 is a front view of the male contact in Fig. 1;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is a schematic structural view of the female end contact of the power connector of the present invention;

Figure 6 is a front view of the female contact in Figure 5;

FIG. 7 is a top view of FIG. 6 .

Detailed ways

Figure 1, Figure 3, and Figure 4 show the male end contact of the power connector of the present invention, which is composed of a plate-shaped male plug 1 at the front and a pair of planar plates spaced apart from each other and parallel to each other at the rear. 3, the two planar plates are formed by hanging from the tail end of the plate-shaped male plug to both sides. The plate-shaped male plug 1 is composed of an independent plate, the rear end of the independent plate is connected with the front ends of the two plane plates 3 as a whole, and the plate-shaped male plug has a heat dissipation through slit 6 arranged in the front and rear directions. The heat dissipation slot runs through the plate-shaped male plug 1 and extends to the plane plate 3 . The width of the two planar plates 3 is greater than the width of the plate-shaped male plug 1, so that the upper and lower edges of the two planar plates 3 protrude from the corresponding edges of the plate-shaped male plug 1 to form a mating positioning edge 2, between the two planar plates The lower edges of each are provided with four terminal pins 4 for connecting with the printed board, and the two planar boards 3 are provided with anti-retraction card platforms 5 on the outer surfaces of the boards. During implementation, the number of the aforementioned terminal pins 4 can be determined according to actual needs.

Figure 2 shows the second embodiment of the male end contact of the power connector. It is composed of bent plate parts attached to the wall boards. The two ends of the rear parts of the wall boards on both sides of the bent board parts are bent outwards and then extended to form two flat boards 3. The bent part is a slope transition, so that The two ends of the rear part of the plate part are connected as a whole with the front ends of the two planar plates.

Fig. 5, Fig. 6, Fig. 7 are the receptacle contacts of the power connector of the present invention, and the contacts include a pair of mutually spaced, parallel and opposite planar plates 10, respectively extending from the same end of the two planar plates 10 The elastic cantilevers 13 are arranged opposite to each other, and an insertion space for a male contact plate-shaped male plug is formed between the two elastic cantilever arms. At least one concave arc-shaped contact portion is provided on the upper part from the root of the arm to the free end. The number of concave arc-shaped contact portions on the two elastic cantilever arms is equal and arranged opposite to each other. Between each set of relative concave arc-shaped contact portions The shortest distances are less than the thickness of the mating male-end contact plate-shaped male plug. When the male-end contact is inserted into the insertion space, the two elastic cantilevers 13 elastically clamp the male-end contact plate-shaped male plug. In this embodiment, there are two concave arc-shaped contact parts 15 and 16 on each elastic cantilever, one concave arc-shaped contact part 15 is arranged at the free end, and the other concave arc-shaped contact part 16 is arranged at the arm the middle of the board.

The female end contact is provided with anti-retraction card platforms 19 on the outer surfaces of the two planar plates 10; the width of the two planar plates 10 is greater than the width of the elastic cantilever 13, so that the upper and lower edges of the two planar plates Corresponding edges of the elastic cantilever protrude to form mating positioning edges; four terminal pins 18 are respectively provided on the lower edges of the two planar boards 10 for connecting with the printed board. During implementation, the number of the aforementioned terminal pins 18 can be determined according to actual needs.

The above-mentioned two elastic cantilevers 13 are provided with three split holes 11 arranged in the front and rear directions, and each elastic cantilever passes through the split holes 11 on it, and the concave arc-shaped contact portion 16 of the elastic cantilever is divided by long-line contact For several short-term contacts, the situation of local poor contact or partial non-contact caused by too long contact wires is improved, and the reliability of electrical contact after mating of male and female contacts is improved. In actual implementation, the number of the above-mentioned split holes is not limited to three, and should be set according to the size of the contact piece and actual needs.

In specific implementation, the two planar plates 10 of the female terminal contact can be separated independently, and they can be packed into corresponding insulators in pairs when in use. Of course, the two planar plates can also pass through them. The connecting plates on the edge are connected as a whole. At this time, the two planar plates are formed by bending a large flat plate into a U shape. As shown in Figure 5, it is the structure in which the two planar plates are connected. The front part of the upper edge is the insertion positioning edge 17 protruding from the upper edge of the elastic cantilever 13, and the rear part is connected as a whole by the connecting plate 12.

Claims (10)

1, the male end contact of power connector, it is characterized in that, this contact is made of tabular public plug and a pair of space at rear portion, the parallel relative surface plate of its front portion, respectively to the both sides formation that overhangs, the lower limb of described two surface plates respectively is provided with at least one termination pin to this two surface plate from the tail end of tabular public plug.

2, the male end contact of power connector according to claim 1 is characterized in that, has at least one heat radiation straight joint that fore-and-aft direction is provided with on the described tabular public plug, and described heat radiation straight joint runs through tabular public plug and extends to surface plate.

3, the male end contact of power connector according to claim 1 is characterized in that, is equipped with the locking card platform on the outer panel face of two surface plates.

4, the male end contact of power connector according to claim 1 is characterized in that, the upper and lower edge of described two surface plates all has plugging together of the tabular public plug of protrusion corresponding edge and locatees the edge.

5, the male end contact of power connector according to claim 1 is characterized in that, described tabular public plug is made of an independent plate, and the front end of the rear end of independent plate and described two surface plates is connected as a single entity.

6, the male end contact of power connector according to claim 1 is characterized in that, the bent plate parts that described tabular public plug is fitted by two side wall panels constitute, corresponding being connected as a single entity of front end of the two ends at bent plate parts rear portion and described two surface plates.

7, the female end contact of power connector, it is characterized in that, this contact comprises a pair of space, parallel relative surface plate, be oppositely arranged from the extended separately elastic cantilever of the mutually same end of these two surface plates, form the space that plugs together of the tabular public plug of male end contact between two elastic cantilevers, the free end of two elastic cantilevers inserts mouth away from forming the male end contact mutually; Be provided with at least one indent arc-shaped contact part by arm roots to free end on each elastic cantilever, indent arc-shaped contact part quantity on two elastic cantilevers equates, is oppositely arranged one by one, beeline between every group of relative indent arc-shaped contact part is all less than the thickness of the tabular public plug of supporting male end contact, when the male end contact insert described plug together the space after, two elastic cantilevers clamp the tabular public plug elasticity of male end contact; The lower limb of two surface plates respectively is provided with at least one termination pin.

8, the female end contact of power connector according to claim 7 is characterized in that, at least one that all has the fore-and-aft direction setting on two elastic cantilevers cut apart the hole.

9, the female end contact of power connector according to claim 7 is characterized in that, is equipped with the locking card platform on the outer panel face of described two surface plates.

10, the female end contact of power connector according to claim 7 is characterized in that, the leading portion at the upper and lower edge of described two surface plates partly is plugging together of protrusion elastic cantilever corresponding edge and locatees the edge, and the back segment part is connected as a single entity by a plate.

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