CN211404810U - High-voltage interlocking mechanism for high-voltage connector - Google Patents

Abstract

The utility model discloses a high-voltage interlocking mechanism for a high-voltage connector, which comprises a first connecting part, a second connecting part and a connecting part, wherein the first connecting part is provided with a first shell and two first high-voltage interlocking terminals which are contained in the first shell; a second connection part having a second housing and a second high-voltage interlock terminal accommodated in the second housing; the second high-voltage interlock terminal is a fork-shaped structure having two receiving portions, two first high-voltage interlock terminals are respectively engaged in each of the two receiving portions, and the second high-voltage interlock terminal of the fork-shaped structure is configured to electrically communicate the two terminals.

Description

High Voltage Interlock Mechanism for High Voltage Connectors

technical field

The utility model relates to the technical field of electrical connection, in particular to a high-voltage interlocking mechanism for a high-voltage connector.

Background technique

A high-voltage interlock (HVIL for short) mechanism is usually provided in a high-voltage connector, that is, a safety guarantee mechanism that uses a low-voltage signal to monitor the integrity of a high-voltage circuit. Theoretically, the low-voltage monitoring circuit is connected first and then disconnected than the high-voltage monitoring circuit, and the necessary advance is maintained in the middle. The length of time can be determined according to the specific situation of the project. Especially in the field of electric vehicles, in the high-voltage circuit in the vehicle, the high-voltage connector is required to be an electrical component with the HVIL function to ensure the safety and reliability of the high-voltage circuit in the vehicle.

FIG. 1A shows a high-voltage interlock connection structure of a common high-voltage connector. The high-voltage connector includes a male end connector 1 and a female end connector 2. The female end connector 2 is provided with two electrical terminals 4, which are respectively connected to the cable, and the male end connector 1 is correspondingly provided with two electrical terminals 4. There are two electrical terminals 3 , as shown in FIG. 1B , which form a square shape with concave receptacles into which the pin-shaped electrical terminals 4 in the female connector can be inserted. The rear end of the distal side of the receiving portion of the electrical terminal in the female connector also forms a wiring portion, and the two wiring portions are connected together by a conductive wire (not shown), so that when the male connector 1 and the female connector are After 2 are connected together, the two pin-shaped electrical terminals 4 in the female end connector 2 are made to conduct current.

However, in such a common high-voltage connector, the two female electrical terminals 4 in the female connector have a complicated structure, and also need to be connected by wire crimping and then assembled into the main body of the insulating material of the connector to complete the installation. , such a process is time-consuming and labor-intensive. Therefore, there is still a need to improve existing high voltage connectors.

Utility model content

In order to overcome the deficiencies of the high-voltage interlocking mechanism in the high-voltage connector in the prior art and improve the manufacturing process of the high-voltage interlocking mechanism in the high-voltage connector, the utility model provides a high-voltage interlocking mechanism for the high-voltage connector. The lock mechanism includes: a first connecting part having a first housing and two first high-voltage interlocking terminals accommodated in the first housing; a second connecting part having a second housing and The second high-voltage interlocking terminal is accommodated in the second housing; the second high-voltage interlocking terminal is a fork-shaped structure, the second high-voltage interlocking terminal has two receiving parts, and the two first high-voltage interlocking terminals are respectively engaged in two In each of the receptacles, the second high voltage interlock terminal of the fork structure is configured to electrically communicate the two first high voltage interlock terminals. The second high voltage interlock terminal is one piece or one piece.

According to one aspect of the present invention, the second high voltage interlock terminal has a base and a plurality of cantilevers extending from the base, the receiving portion is located between two adjacent cantilevers, each of the plurality of cantilevers has a free end and The fixed end, the fixed ends of the plurality of cantilevers are connected at the base to form an integral body.

According to another aspect of the present invention, the plurality of cantilevers include a middle cantilever and side cantilevers located on opposite sides of the middle cantilever.

According to another aspect of the present invention, the second high voltage interlock terminal further includes an attachment tab configured to snap into the second housing, the attachment tab protruding from the fixed end of the cantilever.

According to yet another aspect of the present invention, the attachment tab has teeth that protrude beyond the edge of the attachment tab.

According to yet another aspect of the present invention, the second high-voltage interlock terminal is integrally formed by stamping the conductive plate. In other words, the second high voltage interlock terminal is in the shape of a piece.

According to yet another aspect of the present invention, a second terminal accommodating cavity is formed in the second housing, the second terminal accommodating cavity has opposite side surfaces, and the opposite side surfaces form guide ribs on a part of the corresponding receiving portion to guide Ribs are provided projecting from the opposite sides into the receiving portion.

According to still another aspect of the present invention, when the first high-voltage interlock terminal is inserted into the receiving portion, the guide rib abuts against the first high-voltage interlock terminal.

According to another aspect of the present invention, the free end of the cantilever is provided with a convex portion protruding toward the accommodating cavity.

With the high-voltage interlocking mechanism according to the present invention, only one high-voltage interlocking terminal is required in the second connector, which is a single piece, and no wiring is required. Therefore, the high-voltage interlocking terminal in the second connector can adopt a stamping process Efficient and low-cost manufacturing, no subsequent processing steps are required, saving manufacturing time and reducing costs. In addition, the assembly process of the one-piece high-voltage interlock terminal is simple and the installation accuracy is high.

Through the guide ribs provided on the inner surface of the receiving portion of the second housing relative to the high-voltage interlocking terminal, it can ensure that the high-voltage interlocking terminals in the two connecting portions are always connected during the working process, and the problem of instantaneous disconnection will not occur. , can meet higher vibration requirements, especially suitable for use in vehicles.

Description of drawings

Hereinafter, the preferred embodiments of the present utility model will be described in detail in conjunction with the accompanying drawings, which are:

1A is a cross-sectional view illustrating a high-voltage interlock mechanism of a high-voltage connector in the related art.

FIG. 1B is a perspective view showing a female interlock terminal used in the high voltage connector of FIG. 1A .

2 is a cross-sectional view illustrating a high-voltage interlock mechanism of a high-voltage connector according to a preferred embodiment of the present invention.

FIG. 3 shows a partial perspective view of the internal terminal interlocking structure according to the preferred embodiment of the present invention.

List of drawings

10 High pressure interlock mechanism

20 The first connection part

21 The first shell

22 The first high voltage interlock terminal

30 Second connection part

31 Second housing

32 guide ribs

33 Second high voltage interlock terminal

34 base

35 Cantilever

36 Protrusions

37 Attachment Tab

38 Reception

39 Terminal accommodating cavity

Detailed ways

The present utility model will be further described below in conjunction with the specific embodiments and the accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can obviously be used in many other ways different from those described herein. To implement, those skilled in the art can make similar promotion and deduction according to the actual application situation without violating the connotation of the present invention, so the content of this specific embodiment should not limit the protection scope of the present invention.

FIG. 2 shows a cross-sectional view of a high-voltage connector according to a preferred embodiment of the present invention, in which the high-voltage interlock mechanism 10 is particularly shown. The high-voltage interlocking mechanism 10 is usually integrated in the high-voltage connector to realize a high-voltage interlocking circuit, thereby helping to improve the reliability of the high-voltage connector.

As shown in FIG. 2 , the high-voltage interlock mechanism 10 includes a first connection portion 20 and a second connection portion 30 that are engaged with each other. Preferably, the first connecting portion 20 is a male connecting portion and the second connecting portion 30 is a female connecting portion. The first connection part 20 comprises an insulating first housing 21 and the second connection part 30 comprises an insulating second housing 31, the first housing 21 being for example configured to engage into the second housing 31, they can be interlocked . The first connection part 20 is provided with two first high voltage interlock terminals 22 for the high voltage interlock mechanism 10 , and the second connection part 30 is provided with a second high voltage interlock terminal 33 . The first high voltage interlock terminal 22 is connected to the cable at the distal end, and when the first connection part 20 and the second connection part 30 are engaged in place, the second high voltage interlock terminal 33 is connected to the two first high voltage interlock terminals 22, so that the The two first high voltage interlock terminals 22 are electrically connected, and accordingly the two cables are electrically connected to realize a high voltage interlock circuit.

The first high voltage interlock terminal 22 shown in FIG. 2 is similar to the electrical terminals in the receptacle connector shown in FIG. 1A . The first high-voltage interlocking terminal 22 is fixed in the first housing 21 of the first connecting part 20 , and the front end of the terminal is substantially in the shape of an elongated pin, and is used for connecting with the second high-voltage interlocking terminal 33 of the second connecting part 30 . The rear end has a wiring part for the cables drawn out of the high-voltage interlocking circuit. The structure of the wiring portion is conventional, and a crimping structure can be used.

The second connection portion 30 includes a second high-voltage interlock terminal 33 . As shown in FIG. 2 , the second high-voltage interlock terminal 33 has a fork-shaped structure. Specifically, the second high-voltage interlock terminal 33 has a base portion 34 and three cantilever arms 35 extending from the base portion 34 , and adjacent cantilever arms 35 form two receiving portions 38 . The two first high voltage interlock terminals 22 are engaged into each of the two receptacles 38, respectively. The second high-voltage interlocking terminal 33 in the second connecting part 30 is a one-piece or one-piece terminal structure, which is made of conductive materials, such as copper sheets or other suitable conductive materials, when two first When the high-voltage interlock terminal 22 is engaged with the second high-voltage interlock terminal 33 , the single-piece high-voltage interlock terminal makes the two first high-voltage interlock terminals 22 electrically communicate to realize a circuit.

The cantilever 35 of the second high-voltage interlock terminal 33 has a free end and a fixed end, and the fixed end is formed integrally with the base 34 . The base 34 is also provided with a fixing device at the end opposite to the cantilever 35 for fixing the second high voltage interlock terminal 33 into the second housing 31. In a preferred embodiment, the securing means is an attachment tab 37 having a tooth protruding from the edge of the attachment tab 37, as shown in FIG. 2, two opposite sides of the attachment tab 37 The longitudinal edges of the sides are provided with latching teeth. Correspondingly, the second housing 31 of the second connecting part 30 is provided with an attachment hole. During the installation process, the attachment tab 37 only needs to be inserted into the attachment hole, and then it can be maintained in the in.

The fixing means for fixing the second high-voltage interlocking terminal 33 into the second housing 31 is not limited to the attachment tab 37 provided with the latching teeth, and other forms of latching parts, such as latching grooves or latching parts, can also be used. Elastically deflected jaws.

Advantageously, the fixing means for fixing the second high voltage interlocking terminal 33 into the second housing 31 and the base 34 and the cantilever 35 are all flat plate members, so that the entire second high voltage interlocking terminal is suitable for stamping It is integrally formed in a single process.

As shown in FIG. 3 , the free end of each cantilever 35 is provided with a protruding portion 36 protruding toward the receiving portion 38 . The protruding portion 36 is favorable for abutting against the first high-voltage interlock terminal 22 to ensure electrical connection between the high-voltage interlock terminals. Connectivity reliability. Specifically, the three cantilevers 35 are respectively a middle cantilever 35 and two side cantilevers 35 located on opposite sides of the middle cantilever 35 , the opposite sides of the free end of the middle cantilever have convex parts 36 , and the side cantilevers 35 on both sides The side opposite to the receiving portion has a projection 36 .

Preferably, the middle cantilever 35 is wider than the side cantilever 35, as shown in FIG. 2, so that the wider middle cantilever 35 is conducive to maintaining a fixed position, while the narrower side cantilever 35 is conducive to the first The high-voltage interlock terminal 22 is deflected outward when inserted, and can be elastically reset.

Further, as shown in FIG. 3 , a terminal accommodating cavity 39 is formed in the second housing 31 , the accommodating cavity 39 has opposite sides, and the shape of the terminal accommodating cavity 39 corresponds to the second high voltage interlock terminal 33 . A guide rib 32 is formed on a part of the opposite side surface with the terminal accommodating cavity 39 , and this part of the side surface corresponds to the receiving part 38 between the cantilevers 35 , and the guide rib 32 faces the receiving part 38 from the two opposite sides. The guide ribs 32 extend longitudinally along the direction in which the first high-voltage interlock terminals 22 are inserted. The terminal guide ribs 32 play a guiding role when the second high-voltage interlock terminal 33 is inserted into the terminal accommodating cavity 39 . When the first high-voltage interlock terminal 22 is inserted into the receiving portion 38 , the guide ribs 32 play a role in positioning the interlock terminals 22 and 33 , especially at the free end of the cantilever 35 as shown in FIG. The convex portion 36 and the guide rib 32 define a shape matching the first high-voltage interlock terminal 22, and the convex portion 36 and the guide rib 32 abut against the surface of the first high-voltage interlock terminal 22, so as to minimize the number of interlock terminals 22, 22 and 22. The relative offset of 33 ensures that the first and second high-voltage interlock terminals 22 and 33 are always in contact during the working process, and the problem of instantaneous interruption will not occur.

In a preferred embodiment, the second high-voltage interlock terminal 33 may be fabricated by a stamping process. Preferably, the second high-voltage interlocking terminal 33 with a fork-like structure can be punched out from a copper plate, and other suitable conductive metal materials are also applicable. The thickness of the copper sheet preferably ranges from 0.8 to 1.2 mm. The punched out interlock terminals 33 can be installed into the second housing 31 without further machining. The second high-voltage interlocking terminal 33 made by the stamping process is one-piece, with high dimensional accuracy, no need for other wiring processing, saving production time and cost, and the one-piece second high-voltage interlocking terminal 33 is installed to the High positional accuracy can be ensured in the second housing 31 . Only one terminal is also required in the second connector, which reduces the number of terminals compared to the prior art.

The high-voltage interlocking mechanism 1 is integrated in the high-voltage connector, and the specific arrangement and position can be determined according to the requirements of the high-voltage connector. The housing of the high voltage interlock mechanism 1 may be part of the main housing of the high voltage connector or may be attached thereto.

Although the present utility model is disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present utility model. Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solutions of the present utility model all fall within the protection scope defined by the claims of the present utility model.

Claims (10)

1. A high-voltage interlocking mechanism for a high-voltage connector, the high-voltage interlocking mechanism comprising: a first connection portion having a first housing and two first high voltage interlock terminals housed within the first housing; and a second connection part, the second connection part has a second housing and a second high-voltage interlock terminal accommodated in the second housing; It is characterized in that, The second high-voltage interlocking terminal is a fork-shaped structure, the second high-voltage interlocking terminal has two receiving parts, and the two first high-voltage interlocking terminals are respectively engaged in each of the two receiving parts, so the The second high voltage interlock terminal of the fork structure is configured to electrically communicate two of the first high voltage interlock terminals. 2 . The high-voltage interlocking mechanism according to claim 1 , wherein the second high-voltage interlocking terminal is an integral piece. 3 . 3 . The high-voltage interlock mechanism of claim 1 , wherein the second high-voltage interlock terminal has a base and a plurality of cantilevers extending from the base, and the receiving part is located between two adjacent cantilevers. 4 . , Each of the plurality of cantilevers has a free end and a fixed end, and the fixed ends of the plurality of cantilevers are connected at the base to form an integral body. 4. The high-voltage interlock mechanism of claim 3, wherein the plurality of cantilevers include a middle cantilever and side cantilevers located on opposite sides of the middle cantilever. 5. The high-voltage interlocking mechanism according to claim 1 or 2, wherein the second high-voltage interlocking terminal is integrally formed by stamping a conductive plate. 6. The high-voltage interlock mechanism according to any one of claims 2-4, wherein the second high-voltage interlock terminal comprises a second high-voltage interlock terminal for fixing the second high-voltage interlock terminal into the second housing A fixing device is integrally formed on the second high-voltage interlock terminal. 7. The high voltage interlock mechanism of claim 6, wherein the securing device is configured as an attachment tab that snaps into the second housing, the attachment tab extending from the second housing. The bases of the two high-voltage interlock terminals protrude, and the attachment tabs have teeth protruding from the edges of the attachment tabs. 8 . The high-voltage interlocking mechanism of claim 3 , wherein a second terminal accommodating cavity is formed in the second housing, and the second terminal accommodating cavity has opposite sides, and the opposite sides are in 8 . A guide rib is formed on a portion corresponding to the receiving portion, and the guide rib is protruded from the opposite side surface toward the receiving portion. 9 . The high-voltage interlock mechanism of claim 8 , wherein when the first high-voltage interlock terminal is inserted into the receiving portion, the guide rib abuts against the first high-voltage interlock terminal. 10 . 10 . The high-voltage interlocking mechanism according to claim 9 , wherein the free end of the cantilever is provided with a convex portion protruding toward the accommodating cavity. 11 .

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