CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority under 35 U.S.C. § 119 to Chinese Patent Application No. 202010311900.3 filed on Apr. 20, 2020.
FIELD OF THE INVENTION
The present disclosure relates to connectors, and more specifically, to an insulated electrical connector.
BACKGROUND
A power connector generally comprises an insulation housing and contacts, which include a positive contact and a negative contact provided in the insulation housing. The contacts are adapted to be in electrical contact with bus bars, which may include a positive bus bar and a negative bus bar inserted into the power connector. The contacts of the power connector are generally single-layer conductive contacts composed of a single-layer metal sheet. Such single-layer conductive contacts have defects such as high contact resistance and low current path density.
SUMMARY
According to an embodiment of the present disclosure, an electrical connector comprises a pair of terminals. Each of the terminals includes a first sub-terminal having a first fixation part (e.g., a first plate-like fixation part) and a plurality of first elastic arms extending from the first fixation part, and a second sub-terminal having a second fixation part (e.g., a second plate-like fixation part) and a plurality of second elastic arms extending from the second fixation part. The first fixation part of the first sub-terminal is laminated on the second fixation part of the second sub-terminal, and the plurality of first elastic arms and the plurality of second elastic arms are alternately arranged in a row for electrical contact with a shared bus bar.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described by way of example with reference to the accompanying Figure, of which:
FIG. 1 is a schematic perspective diagram showing a connector according to an exemplary embodiment of the present disclosure, and a bus bar plug assembly connected to the connector;
FIG. 2 shows a schematic perspective diagram of the connector shown in FIG. 1;
FIG. 3 shows a schematic perspective diagram of terminals and auxiliary terminals of the connector shown in FIG. 2;
FIG. 4 shows a schematic perspective diagram of terminals of the connector shown in FIG. 3;
FIG. 5 shows a schematic exploded diagram of terminals, auxiliary terminals and conductive blocks of the connector shown in FIG. 2;
FIG. 6 shows a schematic assembly diagram of terminals, auxiliary terminals and conductive blocks of the connector shown in FIG. 2;
FIG. 7 shows a schematic perspective view of the connector shown in FIG. 2 with the insulation housing removed;
FIG. 8 shows a schematic perspective view of the connector shown in FIG. 7 with an insulation spacer removed; and
FIG. 9 shows a schematic perspective diagram of the insulation spacer of the connector shown in FIG. 7.
DETAILED DESCRIPTION OF THE EMBODIMENTS
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
According to an embodiment of the present disclosure, a connector is provided comprising a pair of terminals. Each of the terminals includes a first sub-terminal having a first plate-like fixation part and a plurality of first elastic arms extending from the first plate-like fixation part, and a second sub-terminal having a second plate-like fixation part and a plurality of second elastic arms extending from the second plate-like fixation part. The first plate-like fixation part of the first sub-terminal is laminated on the second plate-like fixation part of the second sub-terminal, and the plurality of first elastic arms and the plurality of second elastic arms are alternately arranged in a row so as to be in electrical contact with a shared or common bus bar.
FIG. 1 shows a schematic perspective diagram of a power connector according to an exemplary embodiment of the present disclosure and a bus bar plug assembly 10 connected to the power connector. FIG. 2 shows a schematic perspective diagram of the power connector shown in FIG. 1.
In the illustrated embodiment, as shown in FIGS. 1 and 2, the connector comprises a pair of terminals 210, 220. One of the pair of terminals 210, 220 is a positive terminal 210 and the other is a negative terminal 220. The positive terminal 210 is used to electrically connect a first positive bus bar 11 and a second positive bus bar 21, and the negative terminal 220 is used to electrically connect a first negative bus bar 12 and a second negative bus bar 22.
FIG. 3 shows a schematic perspective diagram of the terminals 210, 220 and auxiliary terminals 201, 202 of the connector shown in FIG. 2. FIG. 4 shows a schematic perspective diagram of the terminals of the connector shown in FIG. 3. FIG. 5 shows a schematic exploded diagram of the terminals, the auxiliary terminals and conductive blocks of the connector shown in FIG. 2. FIG. 6 shows a schematic assembly diagram of the terminals, the auxiliary terminals and conductive blocks of the connector shown in FIG. 2.
In the illustrated embodiment, as shown in FIGS. 1 to 6, each of the terminals 210, 220 comprises a first sub-terminal (211, 221) and a second sub-terminal (212, 222). The first sub-terminal (211, 221) has a first plate-like fixation part (211b, 221b) and a plurality of first elastic arms (211a, 221a) extending from the first plate-like fixation part (211b, 221b). The second sub-terminal (212, 222) has a second plate-like fixation part (212b, 222b) and a plurality of second elastic arms (212a, 222a) extending from the second plate-like fixation part (212b, 222b).
In the illustrated embodiment, as shown in FIGS. 1 to 6, the first plate-like fixation part (211b, 221b) of the first sub-terminal (211, 221) is laminated on the second plate-like fixation part (212b, 222b) of the second sub-terminal (212, 222). The plurality of first elastic arms (211a, 221a) and the plurality of second elastic arms (212a, 222a) of each of the terminals 210, 220 are alternately arranged in a row for simultaneous electrical contact with the bus bar (11, 12). Thus, in the present disclosure, the contact impedance at the contact end of the connector is greatly reduced, and the current path density at the contact end of the connector is greatly increased.
In the illustrated embodiment, as shown in FIGS. 1 to 6, the connector further comprises a pair of auxiliary terminals 201, 202 laminated on outer sides of the pair of contacts (210, 220), respectively. Each of the auxiliary terminals 201, 202 have an auxiliary elastic arm (201a, 202a) abutting against the plurality of first elastic arms (211a, 221a) and the plurality of second elastic arms (212a, 222a) of the corresponding terminal (210, 220). Robustness of the entire terminal system is improved by the auxiliary elastic arms, and it is realized that the connector can still be in a contact state and transmit electric energy stably and reliably even in the case of great deviation or shaking.
FIG. 7 shows a schematic perspective view of the connector shown in FIG. 2 with the insulation housing 100 removed. FIG. 8 shows a schematic perspective view of the connector shown in FIG. 7 with the insulation spacer 230 removed. FIG. 9 shows a schematic perspective diagram of the insulation spacer 230 of the connector shown in FIG. 7.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the connector further comprises an insulation spacer 230 arranged between the pair of terminals 210, 220 for electrically isolating the pair of terminals 210, 220. The connector further comprises a pair of conductive blocks 310, 320, the insulation spacer 230, the pair of terminals 210, 220 and the pair of auxiliary terminals 201, 202 being clamped between the pair of conductive blocks 310, 320. The conductive blocks may realize the separable contact connection with the terminals; and the characteristics of the conductive block's low body resistance, good heat transfer and heat dissipation performance provide strong support for the connector to improve the current carrying capacity and heat transfer capacity. In the illustrated embodiment, thicknesses of the conductive blocks 310, 320 are greater than those of the terminals 210, 220. The length and width of the conductive blocks 310, 320 are approximately the same as those of the terminals 210, 220.
The auxiliary terminal (201, 202) further comprises a plate-like fixation part (201b, 202b) and an auxiliary elastic arm (201a, 202a) extending from the plate-like fixation part (201b, 202b). The plate-like fixation part (201b, 202b) of each of the auxiliary terminals 201, 202 is clamped between a corresponding one of the conductive blocks 310, 320 and a corresponding one of the terminals 210, 220. An inner surface of each of the conductive blocks 310, 320 is formed with a recess (311, 321) in which the plate-like fixation part (201b, 202b) of a corresponding one of the auxiliary contacts 201, 202 is positioned. Each of the conductive blocks 310, 320 is in electrical contact with the corresponding terminal (210, 220) and the corresponding auxiliary terminal (201, 202), simultaneously.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the connector further comprises an insulation housing 100, the insulation spacer 230, the pair of terminals 210, 220, the pair of auxiliary terminals 201, 202, and the pair of conductive blocks 310, 320 being assembled in the insulation housing 100. The insulation housing 100 may be connected and fixed to a mounting panel 1 by a screw or a bolt.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the connector further comprises bolt connection assemblies (431, 432, 433) connecting and fixing the insulation spacer 230, the pair of terminals 210, 220, the pair of auxiliary terminals 201, 202 and the pair of conductive blocks 310, 320 to the insulation housing 100. Each bolt connection assembly (431, 432, 433) comprises a bolt 431 and a nut 432, the bolt 431 passing through the insulation spacer 230, the pair of terminals 210, the pair of auxiliary terminals 201, 202, the pair of conductive blocks 310, 320 and the insulating housing 100 in a thickness direction, and being connected with the nut 432. In order to prevent the nut 432 from loosening, the bolt connection assembly (431, 432, 433) further comprises a lock washer 433 which may be placed between the nut 432 and the insulation housing 100, and/or between a head of the bolt 431 and the insulation housing 100.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the insulation spacer 230 comprises a block-like insulation body 231 and cylindrical posts 232 protruding outward from two opposite sides of the block-like insulation body 231, the cylindrical posts 232 passing through the terminals 210, 220, the auxiliary terminals 201, 202 and the conductive blocks 310, 320, the bolt 431 passing through the cylindrical post 232. The cylindrical post 232 electrically isolates the bolt 431 from the terminals 210, 220, the auxiliary terminals 201, 202 and the conductive blocks 310, 320 to prevent the pair of terminals 210, 220 from being electrically connected together by the bolt 431.
In the illustrated embodiment, as shown in FIGS. 1 to 9, one side of the insulation housing 100 is formed with a slot 110, and the elastic arms 210a, 220a of the pair of terminals 210, 220 are located in the slot 110 and adapted to be in electrical contact with the first positive bus bar 11 and the first negative bus bar 12 on the bus bar plug assembly 10 inserted into the slot 110, respectively. The bus bar plug assembly 10 further comprises an insulation separator layer 13 provided between the first positive bus bar 11 and the first negative bus bar 12, the first positive bus bar 11 and the first negative bus bar 12 being formed on two opposite sides the insulation separator layer 13 respectively. Thus, it is convenient to insert the bus bar plug assembly into the slot 110 of the insulation housing 100. The bus bar plug assembly 10 also comprises an insulation shell 14, and the first positive bus bar 11 and negative bus bar 12 are assembled in the insulation shell 14.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the connector further comprises a first connection assembly (411, 412, 413) and a second connection assembly (421, 422, 423). The first connection assembly (411, 412, 413) is used to electrically connect the positive terminal 210 to the second positive bus bar 21. The second connecting assembly (421, 422, 423) is used to electrically connect the negative terminal 220 to the second negative bus bar 22. The first connection assembly (411, 412, 413) comprises a first bolt 411 and a first nut 412, the first bolt 411 passing through the positive terminal 210, one conductive block 310 and the second positive bus bar 21 from inside to outside, and being threadedly connected with the first nut 412, so that the second positive bus bar 21 is electrically connected to the positive terminal 210 via the one conductive block 310. In order to prevent the first nut 412 from loosening, the first connection assembly (411, 412, 413) further comprises a first washer 413, which is placed between the first nut 412 and the second positive bus bar 21.
In the illustrated embodiment, as shown in FIGS. 1 to 9, the second connection assembly (421, 422, 423) comprises a second bolt 421 and a second nut 422, the second bolt 421 passing through the negative terminal 220, the conductive block 320 and the second negative bus bar 22 from inside to outside, and being threadedly connected with the second nut 422, so that the second negative bus bar 22 is electrically connected to the negative terminal 220 via the conductive block 320. In order to prevent the second nut 422 from loosening, the second connecting assembly (421, 422, 423) further comprises a second washer 423, which is placed between the second nut 422 and the second negative bus bar 22.
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
Patent Grant
11695230
