CN201758203U - Multiple contact heavy current elastic contact terminal - Google Patents

Abstract

The utility model discloses a multi-contact high-current elastic contact piece terminal. The contact piece terminal includes a butt end area (110) and a terminal connection area (120), and the butt end area (110) includes a plurality of long contact areas. , Multiple short contact areas, each contact area is a sheet metal staggered structure, forming multiple front and rear contact zones, forming multiple contacts. The root of the long contact area and the root of the short contact area are correspondingly distributed on both sides of the butt end region (110), and the long contact area turns to be distributed on the same side as the opposite short contact area, and together with the opposite short contact area forms the same side contact area. The butt-joint region (110) and the terminal connection region (120) are mutually inversely folded structures. The utility model has a large contact area, high connection reliability, effectively reduces the calorific value in the process of large current transmission, optimizes the heat dissipation channel, and improves the current carrying capacity; and has small volume, material saving and low cost.

Description

Multiple Contact High Current Elastic Contact Terminals

technical field

The utility model relates to an elastic contact piece terminal used in an electric connector, in particular to a large-current elastic contact piece terminal used in a power supply connector installed on a printed board.

Background technique

In the interconnection of electronic circuits, power connectors are essential components in the interconnection system of power circuits. Compared with contacts for transmitting signals, high-current contacts used in power connectors need to have elements such as low contact resistance and good heat dissipation conditions to meet the heat reduction and control temperature rise during high-current transmission. Such as Chinese patents CN1409445A, CN101048919A, CN1801535A, CN1574479A, CN1819345A and CN2629274Y, etc., the structures of the high-current contact terminals described in these patents all have defects such as unsatisfactory heat dissipation effect in the contact area, large volume and high material cost. Therefore, we need a high-current elastic contact terminal that is relatively low in cost and can meet the requirements of miniaturization, high performance and high reliability.

Utility model content

The purpose of this utility model is to provide a multi-contact high-current elastic contact terminal, which has a large contact area and high connection reliability, and can effectively reduce the calorific value in the process of high-current transmission, optimize the heat dissipation channel, and improve the current-carrying capacity. capacity; and small size, material saving, low cost.

The technical scheme of the utility model is: a multi-contact high-current elastic contact terminal, the contact terminal includes a butt end area and a terminal connection area, the butt end area has a plurality of contact areas, and each contact area is a plate The gold staggered layer structure constitutes multiple contact zones before and after, forming multiple contacts.

The further technical solution of the utility model is: a multi-contact high-current elastic contact terminal, the contact terminal includes a butt end area and a terminal connection area, and the butt end area includes a plurality of long contact areas, a plurality of Short contact area, each contact area is a sheet metal staggered structure, forming multiple contact zones before and after, forming multiple contacts. The root of the long contact area and the root of the short contact area are correspondingly distributed on both sides of the butt end area, and the long contact area turns to distribute on the same side as the opposite short contact area, forming the same side contact area with the opposite short contact area .

The further technical solution of the utility model is: a multi-contact high-current elastic contact terminal, the contact terminal includes a butt end area and a terminal connection area, and the butt end area includes a long one contact area, a short two Four contact areas: contact area, long three contact area and short four contact area; the root of the long one contact area and the root of the short four contact area are located on the same side of the butt end area, the root of the long one contact area and the short two contact area The roots are correspondingly distributed on both sides of the butt joint area, the long one contact zone turns to distribute on the same side as the short two contact zone, and forms the right contact zone together with the short two contact zone; the root of the long three contact zone and the short two contact zone The root of the butt end is located on the same side of the butt end area, the root of the long three contact area and the root of the short four contact area are correspondingly distributed on both sides of the butt end area, the long three contact area turns to the same side as the short four contact area, and is connected with the short four contact area. The short four contact areas together form the left contact area; at the same time, the long one contact area and the long three contact areas form the front contact area, and the short two contact areas and the short four contact areas form the rear contact area. Each contact area in the butt joint area is a sheet metal staggered layer structure, forming multiple front and rear contact zones, and forming multiple contacts.

The more detailed preferred technical solution of the utility model is: a multi-contact high-current elastic contact terminal, the contact terminal includes a butt end area and a terminal connection area, and the butt end area includes a long contact area, a short contact area, and a short contact area. Four contact areas of the second contact area, the long three contact area and the short four contact area; The root of the butt end is correspondingly distributed on both sides of the butt end area, the long one contact zone turns to distribute on the same side as the short two contact zone, and forms the right contact zone together with the short two contact zone; the root of the long three contact zone contacts the short two contact zone The root of the contact area is located on the same side of the butt joint area, the root of the long three contact area and the root of the short four contact area are correspondingly distributed on both sides of the butt end area, the long three contact area turns to the same side as the short four contact area, and Together with the short four contact area, the left contact area is formed; at the same time, the long one contact area and the long three contact area form the front contact area, and the short two contact area and the short four contact area form the rear contact area. Each contact area in the butt joint area is a sheet metal staggered layer structure, forming multiple front and rear contact zones, and forming multiple contacts. The butt joint region and the terminal connection region are mutually reversely folded structures. The butt end area is provided with a sheet metal folding piece, which is folded and superimposed and closely contacts the current transmission weak area between the butt end area and the terminal connection area due to the reverse folding structure. The top of the sheet metal folding piece is also provided with a barb structure to facilitate fixing on the insulating base. Barb structures are provided on both sides of the butt end area to facilitate fixing on the insulating base.

The utility model has the advantages of:

1. The multi-contact high-current elastic contact terminal of the present invention adopts a sheet metal staggered layer structure in the butt joint area. This sheet metal staggered layer structure divides the plug-in connection into two (or more) a) contact zone to form multiple contacts. This multi-contact not only increases the area of the contact area and improves the reliability of the connection, but also disperses the concentrated hot spots in the contact area during the transmission of large currents in the past by means of shunting, and expands the heat dissipation channel to reduce the high current. The purpose of heat generation during transmission, optimization of heat dissipation channels to improve current carrying capacity and connection reliability.

2. For the multi-contact high-current elastic contact terminal of the present invention, the butt joint area and the terminal connection area are folded in opposite directions to achieve the purpose of reducing volume and saving materials. The reverse folding of the above-mentioned butt joint area and the terminal connection area will inevitably produce a small current-carrying weak area at the transition, and the current-carrying weak area will affect the current-carrying capacity of the entire contact. For this reason, the utility model increases the conductive cross-sectional area of the region by means of material superimposition and close contact to expand the current-carrying capacity of the contact piece.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the three-dimensional structure schematic diagram of the preferred embodiment of the present utility model;

Fig. 2 is the three-dimensional structural representation (looking up direction) of preferred embodiment of the present utility model;

Fig. 3 is a schematic plan view of a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the mating structure of the preferred embodiment of the present invention and its mating contacts.

Among them: 10 elastic contact terminal; 20 piece contact; 110 butt joint area, 111 long contact area; 1111 sheet metal turning position; 112 short second contact area; 113 long three contact area; 1131 sheet metal turning position; 114 Short four contact areas; 115 barb structure; 102 terminal connection area; 130 current transmission weak area; 140 superimposed part of sheet metal folding piece;

Detailed ways

Embodiment: As shown in FIG. 1 and FIG. 2 , a multi-contact high-current elastic contact terminal includes a butt end area 110 and a terminal connection area 102 .

The butt end region 110 includes four contact regions: a long one contact region 111 , a short two contact region 112 , a long three contact region 113 and a short four contact region 114 . The root of the long one contact region 111 and the root of the short four contact region 114 are located on the same side of the butt end region 110, and the root of the long one contact region 111 and the root of the short second contact region 112 are correspondingly distributed on both sides of the butt end region 110, The first long contact region 111 turns to distribute on the same side as the second short contact region 112 , and together with the second short contact region 112 forms a right contact region. The roots of the long three contact regions 113 and the roots of the short second contact regions 112 are located on the same side of the butt end region 110, and the roots of the long three contact regions 113 and the short four contact regions 114 are correspondingly distributed on both sides of the butt end region 110, The long three-contact region 113 turns to distribute on the same side as the short four-contact region 114 , and forms a left contact region together with the short four-contact region 114 . Meanwhile, the long one contact region 111 and the long three contact region 113 together form the front contact region, and the short two contact region 112 and the short four contact region 114 together form the rear contact region.

In this way, after the elastic contact terminal 10 and the blade contact 20 are mated, there will be at least four contact areas of various types, such as a front contact area, a rear contact area, a left contact area and a right contact area, as shown in FIG. 4 , which This staggered contact area effectively avoids the concentrated generation of heat through the way of shunting, which has a positive impact on the control of temperature rise. On the other hand, after mating, the rear contact areas (short two-contact area 112 and short four-contact area 114) are mechanically protected by the front contact areas (long one-contact area 111 and long three-contact area 113), even under high vibration , high impact and other harsh environmental conditions, it can also achieve the purpose of highly reliable contact and connection.

The butt end area 110 and the terminal connection area 120 are reversely folded structures to achieve the purpose of reducing volume and saving materials, and its plan view is shown in FIG. 3 . Compared with the same-direction bending structure, the amount of materials used in this reverse bending structure is about half of the former, and its weight and volume will also be reduced to varying degrees.

The above-mentioned reverse folding of the butt end region 110 and the terminal connection region 120 will inevitably produce a smaller transmission current weakening region 130 at the transition, which will affect the current carrying capacity of the entire contact 10 , 20 . Therefore, a sheet metal folding piece 140 , 141 is provided in the butt joint area 110 , and the sheet metal folding piece is folded and overlapped and closely contacts the current transmission weak area 130 . In this way, the conductive cross-sectional area of the current transmission weak region 130 is increased to expand the current-carrying capacity of the contacts.

A barb structure 142 is provided on the top of the sheet metal turning piece, and a barb structure 115 is provided on both sides of the butt end area 110 for realizing the fixing of the utility model on the insulating base.

It should be pointed out that for the utility model that has been fully described, there may also be various changes and modified implementations, and it is not limited to the specific examples of the above-mentioned implementation modes. The above-mentioned embodiments are only used as illustrations of the present utility model, rather than limitation. In a word, the protection scope of the present utility model shall include those transformations, substitutions and modifications obvious to those skilled in the art.

Claims (7)

1. multiple contact large-current elastic contact terminal, it is characterized in that: described contact terminal includes zone, butt end (110), terminal bonding pad (120), zone, described butt end (110) has a plurality of contact zones, each contact zone is the panel beating staggered floor construction, a plurality of contact zones before and after constituting form multiple contact.

2. multiple contact large-current elastic contact terminal according to claim 1, it is characterized in that: zone, described butt end (110) includes a plurality of long contact zones, a plurality of short contact district, root corresponding distribution on the two sides of zone, butt end (110) in the root of long contact zone and short contact district, and, the short contact district homonymy of transferring with the opposite in long contact zone distributes, with the short contact district on opposite forming contact zone, the same side.

3. multiple contact large-current elastic contact terminal according to claim 1 is characterized in that: zone, described butt end (110) includes a long contact zone (111), short two contact zones (112), (114) four contact zones in long three contact zones (113) and short four contact zones;

The root of the root of a long contact zone (111) and short four contact zones (114) is positioned at the same side of zone, butt end (110), grow root corresponding distribution on the two sides of zone, butt end (110) of root with short two contact zones (112) of a contact zone (111), transfer in a long contact zone (111) and short two contact zones (112) homonymy distributes, and form the contact zone, right side with short two contact zones (112);

The root of the root of long three contact zones (113) and short two contact zones (112) is positioned at the same side of zone, butt end (110), grow root corresponding distribution on the two sides of zone, butt end (110) of root with short four contact zones (114) of three contact zones (113), transfer in long three contact zones (113) and short four contact zones (114) homonymy distributes, and form the contact zone, left side with short four contact zones (114);

Simultaneously, preceding contact zone is formed with long three contact zones (113) in a long contact zone (111), and the contact zone, back is formed with short four contact zones (114) in short two contact zones (112).

4. according to each described multiple contact large-current elastic contact terminal in the claim 1 to 3, it is characterized in that: zone, described butt end (110) and terminal bonding pad (120) are mutual reverse folded configuration.

5. multiple contact large-current elastic contact terminal according to claim 4, it is characterized in that: zone, described butt end (110) is provided with the panel beating sheet of turning back, panel beating the turn back stack and closely touch the current delivery weakness zone (130) that exists because of reverse folded configuration between zone, butt end (110) and terminal bonding pad (120) of sheet of turning back.

6. multiple contact large-current elastic contact terminal according to claim 5 is characterized in that: the described panel beating sheet top of turning back also is provided with and is convenient on insulating base fixing hangnail structure (142).

7. according to each described multiple contact large-current elastic contact terminal in the claim 1 to 3, it is characterized in that: two sides, zone, described butt end (110) are provided with is convenient to hangnail structure (115) fixing on insulating base.

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