KR102264995B1 - High-voltage terminal - Google Patents

Abstract

The present invention relates to a high-voltage terminal capable of preventing the spacing between a plurality of contact fingers from being spread to a specific value or more in a terminal used for a high voltage. According to the present invention, in the terminal, a frame and an outer portion form a terminal body (10). A wire coupling unit (18) is present at a rear end of the terminal body (10), and a plurality of contact fingers (20) for connecting with the terminal (40) may be arranged in a circular shape at a front end of the terminal body (10). A restricting ring (30) is provided to surround an outer surface of a front end of the contact finger (20). The restricting ring (30) which is an insertion space (28) formed between the contact fingers (20), restricts the contact finger (2) from being elastically deformed when a counterpart terminal (40) is inserted. As described above, according to the present invention, the contact finger (20) is prevented from being excessively elastically deformed.

Description

High-voltage terminal

The present invention relates to a high-voltage terminal, and more particularly, to a high-voltage terminal for preventing a gap between a plurality of contact fingers in a terminal used at a high voltage from increasing by more than a certain amount.

The high voltage terminal has recently been widely used in electric vehicles and the like. The terminal itself is made larger because the carrying capacity is larger than that of the 12 volt low-voltage terminal. Accordingly, in general, the high voltage terminal has a problem in that the elastic deformation property of itself or a part thereof is relatively low.

Among the high voltage terminals, a receptacle terminal having a rod-shaped mating terminal inserted therein has a plurality of contact fingers arranged side by side in a cylindrical shape for electrical contact with the counterpart terminal.

In such a high voltage terminal, there is a problem in that the contact finger is damaged while being elastically deformed excessively if the insertion of the opposite terminal is not performed along the correct trajectory. That is, one or an adjacent one of the plurality of contact fingers is excessively elastically deformed due to the insertion trajectory of the opposite terminal, and permanent deformation occurs.

If permanent deformation occurs in one or two of the contact fingers, the contact area with the other terminal is reduced and problems such as poor conduction performance occur.

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Japanese Patent No. 3775709 Japanese Patent No. 2691620

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the related art as described above, and to prevent the contact finger of a high voltage terminal from being elastically deformed beyond a certain level.

Another object of the present invention is to limit the change in the inner diameter of the regulating ring for regulating the elastic deformation of the contact finger within a predetermined range.

According to a feature of the present invention for achieving the above object, the present invention provides a terminal body, a wire connection part provided at the rear end of the terminal body to be connected to a wire, and a terminal body provided at the front end of the terminal body and connected to the other terminal may include a plurality of contact fingers making electrical contact, and a regulating ring installed around the outer surface of the tip of the contact finger to regulate elastic deformation of the contact finger, wherein the regulating ring is separated on one side by a cutout a ring-shaped ring body, an extension extending side by side in opposite directions with the cutout therebetween, and a hanger protruding from the free end of the extension piece toward the opposite extension and regulating the degree to which the inner diameter of the ring body increases It may include parts.

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The front ends of the hook pieces on both sides are further provided with hook jaws to be upright at positions facing each other.

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The terminal body has a cylindrical large-diameter portion having a larger diameter than other portions of the terminal body, and a portion of the large-diameter portion is provided with a flat or concave curved surface to prevent rotation.

A seal groove in which a seal is positioned is formed between the large diameter portion and the wire connection portion.

A ring seating groove in which the regulating ring is seated is formed on the outer surface of the front end of the contact finger, and a tip hook is formed to protrude from the ring seating groove to the tip side of the contact finger.

A contact jaw protrudes from the inner surface of the front end of the contact finger, so that when the opposite terminal is inserted between the contact fingers, it is in close contact with the outer surface of the opposite terminal.

A plurality of the contact fingers are arranged in a circular shape to form an insertion space into which the opposite terminal is inserted.

A guide slope is formed at the tip of the contact jaw to guide the insertion of the opposite terminal into the insertion space.

In the high voltage terminal according to the present invention, the following effects can be obtained.

In the present invention, there is a regulating ring surrounding a plurality of contact fingers at the tip of the terminal body. The regulating ring is configured such that the hook pieces at the front end of the extension piece in the width direction are hooked to each other so as not to extend to a diameter greater than a certain level. Accordingly, the inner diameter of the regulating ring is varied within a predetermined range to regulate the degree to which the contact finger is elastically deformed, so that permanent deformation due to excessive elastic deformation of the contact finger can be prevented.

And, in the present invention, when the inner diameter of the regulating ring is increased in order for the operation of the regulating ring to be performed accurately, the hooking jaw is formed upright on the hook piece so that the maximum inner diameter of the regulating ring can be accurately maintained by contact between the hooking jaws. , the excessive elastic deformation regulating operation of the contact finger by the regulating ring can occur precisely.

1 is a perspective view showing the configuration of a preferred embodiment of a high voltage terminal according to the present invention.
Figure 2 is an exploded perspective view showing the embodiment shown in Figure 1 in an exploded view.
Figure 3 is a plan view of the regulating ring constituting the embodiment of the present invention.
Figure 4 is a perspective view showing that the counter terminal is coupled to the high voltage terminal of the embodiment of the present invention.
5 is an operation state diagram showing a state in which the inner diameter of the regulating ring increases as the inner diameter of the insertion space formed by the contact fingers increases during the coupling process of the opposite terminal in the embodiment of the present invention;
Figure 6 is a perspective view showing a regulating ring constituting another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

As shown in the drawings, in the high voltage terminal according to the embodiment of the present invention, the terminal body 10 forms an appearance and a skeleton. The terminal body 10 is made by processing a substantially rod-shaped metal material. The terminal body 10 has a large diameter portion 12 having a larger outer diameter than other portions. An anti-rotation surface 14 is provided on the outer surface of the large-diameter portion 12 . The anti-rotation surface 14 is provided to prevent the terminal from rotating because the large-diameter portion 12 has a cylindrical shape so that it can be rotated within the housing. The anti-rotation surface 14 may be formed as a flat surface or a curved surface concavely inserted into the outer surface of the large-diameter portion 12 . The anti-rotation surface 14 may be formed on only one side of the large-diameter portion 12 or may be formed on opposite sides of each other.

The terminal body 10 has a seal groove 16 adjacent to the large-diameter portion 12 and toward the rear end of the terminal body 10 . The seal groove 16 is a portion where a seal for waterproofing is installed in the housing. A portion of the seal groove 16 may be occupied by a seal, and a lance in the housing may be positioned and hung on the remaining portion.

At the rear end of the terminal body 10, there is a wire connection part 18. The wire connection part 18 is compressed with an electric wire (not shown) inserted therein. Electrical connection with the outside is made by pressing the wire to the wire connection part 18 .

A plurality of contact fingers 20 are provided at the tip of the terminal body 10 . A plurality of the contact fingers 20 extend side by side, making the overall cylindrical shape. The contact fingers 20 are each made in a cantilever shape at the tip of the terminal body 10, and there is a predetermined gap between the adjacent contact fingers 20. The contact fingers 20 are elastically deformed so that when the mating terminals 40 (refer to FIG. 4) are inserted, they spread apart, that is, the inner diameter of the cylindrical shape formed by the contact fingers 20 increases. The inner surface of the contact finger 20 is in close contact with the outer surface of the counterpart terminal 40 to perform electrical connection.

A contact jaw 21 protrudes from the inner surface of the tip of the contact finger 20 . The contact jaw 21 protrudes relatively compared to the other inner surface of the contact finger 20 . The contact jaw 21 is a portion in close contact with the outer surface of the counterpart terminal (40). The contact jaws 21 are such that each of the contact fingers 20 has a circular shape, so that when the opposite terminal 40 is inserted, the contact fingers 20 are elastically deformed in a direction away from each other.

A ring seating groove 22 is formed on the outer surface of the tip of the contact finger 20, respectively. A regulating ring 30 to be described below is positioned in the ring seating groove 22 . The ring seating groove 22 is relatively concave in the outer surface of the contact finger 20 .

At the free end of the contact finger 20 , a tip hanging part 24 protrudes relatively compared to the ring seating groove 22 . One end of the ring seating groove 22 is formed by the presence of the tip hanging part 24 . The tip hanging part 24 serves to prevent the regulating ring 30 from falling out of the ring seating groove 22 .

A guide slope 26 is provided inside the free end of the contact finger 20 . The guide slope 26 is such that the inner diameter formed between the ones formed in each contact finger 20 increases toward the tip. The guide slope 26 serves to guide the insertion of the opposite terminal 40 into the space formed by the contact finger 20 , that is, the insertion space 28 . The guide slope 26 guides the entry of the counterpart terminal 40 into the insertion space 28, which is formed by the contact finger 20 even if the entry trajectory of the counterpart terminal 40 deviates from the normal state. It serves to accurately enter the insertion space (28).

A regulating ring 30 is positioned in the ring seating groove 22 formed on the outer surface of the free end side of the contact finger 20 . The regulating ring 30 is a cylindrical ring, and the ring body 32 forming the skeleton is not a ring shape connected in a circle, but has a cutout 33 as shown in FIG. 3 . The cutout 33 is formed by crossing the ring body 32 in a 'L' shape, and the inner diameter of the regulating ring 30 may be changed by the presence of the cutout 33 .

An extension piece 34 extends side by side to the ring body 32 with the cutout 33 interposed therebetween. The extension pieces 34 extend in opposite directions to each other. There is a hook piece 36 protruding from the tip of the extension piece 34 toward the opposite extension piece 34 . There is a predetermined distance W between the hook pieces 36 in the extending direction of the extension pieces 34 . Relative movement between the hook pieces 36 is possible by the distance W. As shown in FIG. It is possible to change the inner diameter of the regulating ring 30 by the relative movement between the hook pieces 36 .

On the other hand, there is shown another embodiment of the regulating ring 30 ′ in FIG. 6 , the regulating ring 30 ′ has most of the same configuration as the embodiment described above, and only hangs on the hook piece 36 . The jaw 37 is formed upright. The degree of protrusion of the hook 37 is a degree of protruding a little more than the surface of the contact finger 20 .

Hereinafter, the use of the high voltage terminal according to the present invention having the above-described configuration will be described in detail.

The high voltage terminal according to the present invention is installed in a housing (not shown). A high voltage terminal is located in the terminal installation space in the housing. At this time, the electric wire (not shown) is pressed into the electric wire connection part 18 while being inserted, so that the terminal body 10 and the electric wire are electrically connected.

As described above, the terminal 40 of the mating connector is inserted into the terminal installed in the housing and electrically connected. The mating terminal 40 has a rod shape and is inserted into the insertion space 28 formed by the contact fingers 20 . In the process of inserting the counterpart terminal 40 into the insertion space 28 , the guide slope 26 of the contact finger 20 guides the counterpart terminal 40 into the insertion space 28 accurately. .

As the outer surface of the mating terminal 40 is brought into contact with the contact jaw 21 on which the guide slope 26 is formed, the contact finger 20 is elastically deformed. That is, the respective contact fingers 20 are elastically deformed so as to spread apart from each other.

The extent to which the contact fingers 20 are spread is regulated by the regulating ring 30 . In a state in which the contact fingers 20 are not elastically deformed, the distance W between the hook pieces 36 is maintained at a maximum value, and as the contact fingers 20 are elastically deformed and opened, the regulating ring 30 ) will also increase. That is, as the inner diameter of the regulating ring 30 is increased by the contact finger 20 , the gap between the hook pieces 36 is reduced.

When the gap between the hook pieces 36 is eliminated, that is, when the hook pieces 36 formed on the extension pieces 34 on both sides come into contact with each other and hang, the inner diameter of the regulating ring 30 is no longer large. . Accordingly, elastic deformation of the contact fingers 20 is regulated by the regulating ring 30 .

In particular, in the case where the central axis of the regulating ring 30 deviates greatly from the central axis of the insertion space 28 , a large elastic deformation may occur in the contact finger 20 on either side of the regulating ring 30 . will play a role The regulating ring 30 prevents excessive elastic deformation of the contact finger 20 on one side, and the opposite terminal 40 is guided toward the center of the insertion space 28 by the guide slope 26, etc., so that the terminal of the present invention The coupling between the and the counterpart terminal 40 is made precisely.

When the mating terminal 40 is inserted into the insertion space 28, the contact finger 20 is elastically deformed, and thus the contact jaw 21 on the inner surface of the tip of the contact finger 20 is connected to the mating terminal ( 40) is kept in close contact with the outer surface by the elastic force. Accordingly, the contact between the terminal of the present invention and the counter terminal 40 is firm, so that the electrical connection can be reliably maintained.

On the other hand, the hook 37 of the embodiment shown in Fig. 6 ensures that the contact between the hook piece 36 in the regulating ring 30'. That is, one side of the hook piece 36 rides over the other side hook piece 36 to prevent the inner diameter of the regulating ring 30 ′ from increasing without being regulated. Of course, when the thickness of the hook piece 36 is maintained to some extent in the regulation ring 30 shown in FIG. 1 and the like, a phenomenon in which one side hook piece 36 rides on the other side hook piece 36 does not occur. However, depending on the design conditions, etc., it is necessary to place the hooking jaw 37 so that the ride-over between the hook pieces 36 does not occur.

In the above, even though it has been described that all components constituting the embodiment of the present invention operate as one combined or combined, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as terms defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: Terminal body 12: Daekyungbu
14: anti-rotation surface 16: seal groove
18: wire connection part 20: contact finger
21: contact jaw 22: ring seating groove
24: tip hanger 36: guide slope
28: insertion space 30, 30': regulating ring
32: ring body 33; incision
34: extension 36: hanger
37: hook jaw W: gap
40: Opponent terminal

Claims (10)

terminal body,
a wire connection part provided at the rear end of the terminal body and connected to the wire;
a plurality of contact fingers provided at the tip of the terminal body to make electrical contact with the other terminal;
and a regulating ring installed around the outer surface of the tip of the contact finger to regulate elastic deformation of the contact finger,
The regulating ring includes a ring-shaped ring body separated on one side by a cutout, an extension extending side by side in opposite directions with the cutout therebetween, and a free end of the extension protruding toward the opposite extension. A high voltage terminal including a hook piece that regulates the degree to which the inner diameter of the ring body increases.
delete The high voltage terminal according to claim 1, wherein a hook jaw is further provided at the ends of the hook pieces on both sides to stand upright at positions facing each other.
delete The high-voltage terminal according to claim 1, wherein the terminal body has a cylindrical large-diameter portion having a larger diameter than other portions of the terminal body, and a portion of the large-diameter portion is provided with a flat or concave curved anti-rotation surface.
The high voltage terminal according to claim 5, wherein a seal groove in which a seal is positioned is formed between the large diameter portion and the wire connection portion.
[Claim 7] The ring seating groove according to any one of claims 1, 3, 5 to 6, wherein a ring seating groove in which the regulating ring is seated is formed on the outer surface of the tip end of the contact finger. A high-voltage terminal formed with a protruding tip hanger on the side.
The high-voltage terminal according to claim 7, wherein a contact jaw protrudes from an inner surface of the tip of the contact finger, so that when the opposite terminal is inserted between the contact fingers, it is in close contact with the outer surface of the opposite terminal.
The high voltage terminal according to claim 8, wherein a plurality of the contact fingers are arranged in a circle to form an insertion space into which the counterpart terminal is inserted.
The high voltage terminal according to claim 9, wherein a guide slope is formed at the tip of the contact jaw to guide the insertion of the opposite terminal into the insertion space.

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