KR102780019B1 - Outlet charging plug for electric vehicle - Google Patents

Abstract

The present invention discloses an outlet charger for an electric vehicle that improves assembly workability by connecting the lower cover and the upper cover so that the pressurized binding connection portion mutually binds the lower cover and the upper cover when the lower cover is secured to the upper cover and the lower cover and the upper cover are pressed in a mutually facing direction.
The disclosed outlet charger for an electric vehicle is characterized by including a terminal housing into which a plurality of terminal pins having cables connected thereto are inserted so as to be compartmentalized, a low cover mounted on a peripheral surface of the terminal housing to securely support the cables, an upper cover secured to the low cover to cover the cables so as to prevent them from being exposed, and a pressurized connection part that connects the upper cover and the low cover to be mutually secured by applying pressure from an external force in a state where the low cover is secured to the upper cover.

Description

{OUTLET CHARGING PLUG FOR ELECTRIC VEHICLE}

The present invention relates to an outlet charger for an electric vehicle, and more specifically, to an outlet charger for an electric vehicle which improves assembly workability by connecting the lower cover and the upper cover so that the pressurized connection part mutually restrains them when the lower cover and the upper cover are pressed in a direction facing each other while the lower cover is secured to the upper cover.

In general, an electric vehicle is a car that runs on electricity as a power source, and such an electric vehicle refers to a car that has a battery installed in the body that can charge electricity, and that can run by charging the battery and turning the motor with the electricity supplied from the charged battery.

In the use of such electric vehicles, a method of charging electricity in the battery is used, in which a charging outlet at an electric vehicle charging station is connected to the charging plug of the electric vehicle to charge the battery, and a method of connecting a power plug to a household outlet and the charging outlet to the vehicle using a portable charger equipped with a power plug and a charging outlet on both sides of an ICCB to charge the battery.

These charging outlets include a body that is connected to an inlet of an electric vehicle, a latch provided on the body so as to be able to be caught on the inlet and to maintain the body connected to the inlet, and a release lever that is operable on the body so as to release the latch from the inlet.

At this time, the body is composed of a connector part in which a connection terminal is installed to be connected to the inlet of the electric vehicle, and a pair of rear covers that are combined with the connector part and accommodate wiring connected to the connection terminal.

However, conventional rear covers have the problem of not only reducing assembly workability but also increasing work time because workers have to perform bolting work one by one using separate tools to connect them.

Therefore, there is a need to improve this.

Related background technology includes Korean Patent Publication No. 10-1047400 (registered on July 1, 2011, title: Fixed outlet wire charging plug for electric vehicle charger).

The present invention was created in response to the above-described necessity, and the purpose of the present invention is to provide an outlet charger for an electric vehicle that improves assembly workability by connecting the lower cover and the upper cover so that the pressurized binding connection portion mutually binds them when the lower cover and the upper cover are pressed in a direction facing each other while the lower cover is secured to the upper cover.

In order to achieve the above object, an electric vehicle outlet charger according to one embodiment of the present invention is characterized by including a terminal housing into which a plurality of terminal pins having cables connected thereto are inserted so as to be compartmentalized, a low cover mounted on a peripheral surface of the terminal housing to securely support the cables, an upper cover secured to the low cover to cover the cables so as to prevent them from being exposed, and a pressurized connection part that connects the upper cover and the low cover to be mutually secured by pressure from an external force in a state where the low cover is secured to the upper cover.

The above pressurized connection part is characterized by including a plurality of first coupling grooves formed in the lower cover, a plurality of second coupling grooves formed in the upper cover so as to face the first coupling grooves, and a press-fit connection pin that is press-fitted into the first coupling groove and the second coupling groove to prevent separation and connect the lower cover and the upper cover.

The above press-fit connecting pin is characterized by including an insertion shaft portion having one side inserted into the first coupling groove portion and the other side inserted into the second coupling groove portion, a catch projection portion provided on the circumferential surface of the insertion shaft portion so that the insertion shaft portion can be caught and inserted into the first coupling groove portion and the second coupling groove portion, and a plurality of elastic pressing portions formed obliquely on the circumferential surface of the insertion shaft portion so as to elastically press the inner surfaces of the first coupling groove portion and the second coupling groove portion when the insertion shaft portion is inserted into the first coupling groove portion and the second coupling groove portion.

The terminal housing is characterized by including a connecting portion connected to the inlet, a supporting portion formed to extend from the connecting portion and to support the lower cover and the upper cover, an insertion hole formed through the connecting portion and the supporting portion so that the terminal pin can be axially inserted, and a movement prevention member provided on the supporting portion to prevent the terminal pin from moving in a direction opposite to the insertion direction when the terminal pin is axially inserted into the insertion hole.

The above movement-preventing member is elastically coupled to the peripheral surface of the support portion by an elastic coupling portion, and the elastic coupling portion includes a locking jaw portion protrudingly formed on the peripheral surface of the support portion and an elastic catching member provided on the movement-preventing member so as to be elastically hooked and supported by the locking jaw portion.

The above-mentioned lower cover and the upper cover are characterized in that, when mutually connected through the pressurized restraint connection, the flow of the cable is prevented by the flow prevention part.

The above-described flow-preventing member is characterized by including a first guide member provided on the inner surface of the lower cover and having a first receiving groove formed therein for receiving the cable, a second guide member provided on the inner surface of the upper cover facing the first guide member and having a second receiving groove formed therein for receiving the cable, and a catch fixing member for catchingly fixing the peripheral surface of the cable when the cable is received in the first receiving groove and the second receiving groove.

The above-mentioned hook-and-loop member is characterized by including a plurality of first teeth formed on the inside of the first receiving groove to contact and pressurize the cable, and a plurality of second teeth formed on the inside of the second receiving groove to contact and pressurize the cable.

According to the outlet charger for an electric vehicle according to the present invention, since the pressure-restricting connecting portion has a structure in which the lower cover and the upper cover are mutually restrained when the lower cover is secured to the upper cover and the upper cover are pressed in a direction facing each other, the assembly workability is improved.

In addition, the present invention has the effect of preventing twisting and kinking of cables while reducing the number of parts by having the flow-preventing portions prevent cables connected to each terminal pin from flowing by gathering them together when the lower cover and the upper cover are mutually connected through a pressurized binding connection portion.

FIG. 1 is a perspective view illustrating an outlet charger for an electric vehicle according to one embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating an outlet charger for an electric vehicle according to one embodiment of the present invention.
FIG. 3 is a cross-sectional view illustrating a pressurized connection part in an outlet charger for an electric vehicle according to one embodiment of the present invention.
FIG. 4 is a cross-sectional view illustrating a flow prevention unit in an outlet charger for an electric vehicle according to one embodiment of the present invention.
FIG. 5 is an exploded perspective view illustrating an outlet charger for an electric vehicle according to another embodiment of the present invention.
FIG. 6 is a cross-sectional view illustrating the operating state of an outlet charger for an electric vehicle according to another embodiment of the present invention.

Hereinafter, an embodiment of an outlet charger for an electric vehicle according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines and the size of components illustrated in the drawings may be exaggerated for the sake of clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of their functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view illustrating an outlet charger for an electric vehicle according to an embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating an outlet charger for an electric vehicle according to an embodiment of the present invention, FIG. 3 is a cross-sectional view illustrating a pressurized restraint connection part in an outlet charger for an electric vehicle according to an embodiment of the present invention, FIG. 4 is a cross-sectional view illustrating a movement prevention part in an outlet charger for an electric vehicle according to an embodiment of the present invention, FIG. 5 is an exploded perspective view illustrating an outlet charger for an electric vehicle according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view illustrating an operating state of an outlet charger for an electric vehicle according to another embodiment of the present invention.

As shown in FIGS. 1 to 6, an outlet charger for an electric vehicle according to the present invention includes a terminal housing (10), a lower cover (20), an upper cover (30), and a pressurized connection part (40).

The terminal housing (10) has a terminal pin (T) fitted with a cable (C) connected to it.

This terminal housing (10) serves to connect to the inlet so that the terminal pin (T) can be inserted into the connection terminal provided in the inlet of the electric vehicle, and at the same time serves to be fixedly connected to the low cover (30).

To this end, the terminal housing (10) includes a connecting portion (11) connected to the inlet of the electric vehicle, a supporting portion (12) formed to extend from the connecting portion (11) and support the lower cover (20) and the upper cover (30), an insertion hole portion (13) formed to allow a terminal pin (T) to be axially inserted into the connecting portion (11) and the supporting portion (12), and a movement prevention member (14) connected to the supporting portion (12) to prevent the terminal pin (T) from moving in the opposite direction of the insertion direction when the terminal pin (T) is axially inserted into the insertion hole portion (13).

At this time, the movement prevention member (14) covers the edge of the insertion hole (13) while allowing the cable (C) connected to the terminal pin (T) to pass through, thereby supporting the terminal pin (T) and is elastically joined to the circumference of the support member (12) by the elastic joint member (15).

This elastic joint (15) includes a locking jaw (15a) that is formed protrudingly on the peripheral surface of the support (12) and an elastic catching member (15b) that is provided on the movement prevention member (14) so as to be elastically caught and supported by the locking jaw (15a).

And, the low cover (20) is mounted on the periphery of the support member (12) provided in the terminal housing (10) to support the cable (C) so that it can be fixed, and the upper cover (30) is coupled to the low cover (20) to cover the cable (C) so as to prevent it from being exposed.

These low covers (20) and upper covers (30) serve to protect and accommodate the cables (C) and are mutually connected to accommodate the support portion (12) of the terminal housing (10).

At this time, the upper cover (30) is equipped with an elastic engaging hook (31) that elastically engages the inlet of the electric vehicle when the terminal housing (10) is connected to the inlet, and a engaging release rotation lever (32) that rotates the elastic engaging hook (31) so that the elastic engaging hook (31) is released from the inlet.

Meanwhile, the pressurized binding connection (40) connects the lower cover (20) and the upper cover (30) to be mutually restrained by pressurization by an external force while the lower cover (20) is secured to the upper cover (30).

To this end, the pressurized connection part (40) includes a plurality of first coupling grooves (41) formed spaced apart from each other on the lower cover (20), a plurality of second coupling grooves (42) formed on the upper cover (30) facing the first coupling grooves (41), and a press-fit connection pin (43) that is press-fitted into the first coupling grooves (41) and the second coupling grooves (42) to prevent separation and mutually connect the lower cover (20) and the upper cover (30).

That is, when one side of the press-fit connection pin (43) is pressed into the first coupling groove (41), the upper cover (30) is seated on the low cover (20) so that the other side of the press-fit connection pin (43) and the second coupling groove (42) are aligned, and then the low cover (20) and the upper cover (30) are pressed in a direction facing each other, the other side of the press-fit connection pin (43) is pressed into the second coupling groove (42), so that the low cover (20) and the upper cover (30) can be restrained to prevent separation.

Here, the press-fit connecting pin (43) includes an insertion shaft portion (43a) inserted into the first coupling groove portion (41) and the second coupling groove portion (42), a catch protrusion portion (43b) provided on the peripheral surface of the insertion shaft portion (43a) so that the insertion shaft portion (43a) can be caught and inserted into the first coupling groove portion (41) and the second coupling groove portion (42), and a plurality of elastic pressure portions (43c) formed obliquely along the axial direction on the peripheral surface of the insertion shaft portion (43a) so as to elastically press the inner surfaces of the first coupling groove portion (41) and the second coupling groove portion (42) when the insertion shaft portion (43a) is inserted into the first coupling groove portion (41) and the second coupling groove portion (42).

Accordingly, when the insertion shaft part (43a) is inserted into the first coupling groove part (41) and the second coupling groove part (42), respectively, the catch portion (43b) restricts the insertion of the insertion shaft part (43a) so that the insertion shaft part (43a) is axially inserted evenly into the first coupling groove part (41) and the second coupling groove part (42), and the elastic pressure portion (43c) is bent so that it can elastically contact the inner surfaces of the first coupling groove part (41) and the second coupling groove part (42) when inserted into the first coupling groove part (41) and the second coupling groove part (42).

At this time, when a force is applied to the elastic pressure portion (43c) to move in the opposite direction to the direction in which the insertion shaft portion (43a) is inserted into the first coupling groove portion (41) and the second coupling groove portion (42), a force is applied to bend it in the opposite direction to the direction in which it entered the first coupling groove portion (41) and the second coupling groove portion (42), thereby preventing the movement of the insertion shaft portion (43a).

Accordingly, when the press-fit connection pin (43) is inserted into the first joining groove (41) of the low cover (20) and the second joining groove (42) of the upper cover (30) to a certain length and the low cover (20) and the upper cover (30) are pressed in a direction facing each other, the low cover (20) and the upper cover (30) can be joined to prevent separation from each other without a separate tool, thereby improving the assembly workability.

In addition, the lower cover (20) and the upper cover (30) can prevent the cable (C) from flowing by the flow prevention part (50) when they are connected to each other through the pressurized connection part (40).

Specifically, the flow prevention member (50) includes a first guide member (51) provided on the inner surface of the lower cover (20) and having a first receiving groove (51a) formed therein for receiving a cable (C), a second guide member (52) provided on the inner surface of the upper cover (30) so as to face the first guide member (51) and having a second receiving groove (52a) formed therein for receiving a cable (C), and a catch fixing member (53) for catching and fixing the circumference of the cable (C) when the cable (C) is received in the first receiving groove (51a) and the second receiving groove (52a).

At this time, the fixing member (53) includes a plurality of first toothed parts (53a) formed on the inside of the first receiving groove (51a) to contact and pressurize the cable (C) and a plurality of second toothed parts (53b) formed on the inside of the second receiving groove (52a) to contact and pressurize the cable (C).

That is, when the lower cover (20) and the upper cover (30) are coupled with each other while the first receiving groove (51a) and the second receiving groove (52a) receive the cable (C), the first gear portion (53a) and the second gear portion (53b) exert a pressing force while in contact with the peripheral surface of the cable (C) so that the cable (C) is fixed in position.

In addition, as shown in FIGS. 5 and 6, a support member (21) may be formed protrudingly on the lower cover (20) to support the cable (C) at a position higher than the height at which the cable (C) is accommodated in the first receiving groove (51a) by being spaced apart from the first guide member (51), and a pressure member (53) may be formed protrudingly on the upper cover (50) to pressurize the cable (C) at a position lower than the height at which the cable (C) is accommodated in the second receiving groove (52a).

At this time, the support member (21) is provided in the lower cover (20) so as to be spaced apart from the portions accommodated in the first receiving groove (51a) and the second receiving groove (52a) of the cable (C) on one side in the axial direction of the cable (C), and the pressure member (33) is provided in the upper cover (30) so as to be spaced apart from the portions accommodated in the first receiving groove (51a) and the second receiving groove (52a) of the cable (C) on the other side in the axial direction of the cable (C).

Accordingly, the cable (C) can be bent and deformed by the support member (21) and the pressure member (33) while being accommodated in the first accommodation groove (51a) and the second accommodation groove (52a), so that the fixing force against axial movement can be further improved.

Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Therefore, the true technical protection scope of the present invention should be defined by the patent claims below.

10: Terminal housing 11: Connection part
12: Support part 13: Insertion hole part
14: Movement prevention member 15: Elastic joint
20: Low cover 21: Supporting member
30: Upper cover 31: Elastic hook
32: Release lever 33: Pressurizing member
40: Pressurized joint 41: First joint groove
42: Second joint groove 43: Press-fit connection pin
50: Anti-flow restraint member 51: First guide member
52: Second guide member 53: Hook fixing member

Claims (8)

A terminal housing into which multiple terminal pins with connected cables are inserted in a compartmentalized manner;
A low cover mounted on the periphery of the terminal housing to support the cable so that it can be fixed;
An upper cover that is fixed to the lower cover and covers the cable so as to prevent it from being exposed; and
Including a pressure restraint connection that connects the upper cover and the lower cover to each other by pressure from an external force while the lower cover is secured to the upper cover,
The above pressurized connection part includes a first coupling groove formed in plurality on the lower cover, a second coupling groove formed in plurality on the upper cover facing the first coupling groove, and a press-fit connection pin that is press-fitted into the first coupling groove and the second coupling groove to prevent separation and connect the lower cover and the upper cover.
An outlet charger for an electric vehicle, characterized in that the press-fit connecting pin includes an insertion shaft portion having one side inserted into the first coupling groove portion and the other side inserted into the second coupling groove portion, a catch projection portion provided on the circumferential surface of the insertion shaft portion so that the insertion shaft portion can be caught and inserted into the first coupling groove portion and the second coupling groove portion, and a plurality of elastic pressure portions formed obliquely on the circumferential surface of the insertion shaft portion so as to elastically pressurize the inner surfaces of the first coupling groove portion and the second coupling groove portion when the insertion shaft portion is inserted into the first coupling groove portion and the second coupling groove portion.
delete delete In the first paragraph,
The above terminal housing,
A connector that connects to the inlet;
A support member formed as an extension to the above connecting member to support the lower cover and the upper cover;
An insertion hole formed through the connecting portion and the supporting portion so that the terminal pin can be inserted into the shaft; and
A movement prevention member provided on the support to prevent the terminal pin from moving in the opposite direction of the insertion direction when the terminal pin is inserted into the insertion hole;
An outlet charger for an electric vehicle, characterized by including a .
In paragraph 4,
The above movement prevention member is elastically connected to the peripheral surface of the support member by an elastic connecting member,
The above elastic joint is,
A locking jaw portion protrudingly formed on the periphery of the above support portion; and
An elastic engaging member provided on the movement prevention member so as to be elastically engaged and supported by the above locking jaw portion;
An outlet charger for an electric vehicle, characterized by including a .
In the first paragraph,
An outlet charger for an electric vehicle, characterized in that the lower cover and the upper cover are mutually connected through the pressurized connection portion, and the movement of the cable is prevented by the movement prevention portion.
In Article 6,
The above-mentioned flow prevention part is,
A first guide member provided on the inner surface of the above low cover and having a first receiving groove formed therein for receiving the cable;
A second guide member provided on the inner side of the upper cover so as to face the first guide member and having a second receiving groove formed therein for receiving the cable; and
A hook fixing portion that hooks and fixes the circumference of the cable so that the cable can be hooked when the cable is received in the first receiving groove and the second receiving groove;
An outlet charger for an electric vehicle, characterized by including a .
In Article 7,
The above-mentioned fixing part is,
A plurality of first gear teeth formed on the inside of the first receiving groove to contact and pressurize the cable; and
A second gear part formed in multiple numbers on the inside of the second receiving groove to contact and pressurize the cable;
An outlet charger for an electric vehicle, characterized by including a .

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