KR102375243B1 - Charging connector - Google Patents

Abstract

The present invention relates to a charging connector. The present invention relates to a charging housing 10 having a terminal installation space 32 therein, and a contact portion accommodated in the terminal installation space 32 and protruding toward the opposite terminal is caught inside the terminal installation space 32. Includes a primary fixed charging terminal (T1). And an inner housing 55 is installed in the terminal installation space 32 , and the inner housing 55 surrounds the outside of the charging terminal T1 at a position adjacent to the entrance of the terminal installation space 32 . In addition, when assembled to the charging housing 10, the rear holder 80 supports the rear of the inner housing 55 to secondaryly fix the charging terminal T1 connected to the inner housing 55, and a wire seal (S1) is installed to surround the charging wire (W) connected to the charging terminal (T1) at a position adjacent to the entrance of the terminal installation space (32), the inner housing (55) is the inner housing (55) and It is located between the rear holder 80 and may be compressed between the inner housing 55 and the rear holder 80 .

Description

Charging connector {Charging connector}

The present invention relates to a charging connector, and more particularly, to a charging connector for charging a battery of a vehicle, wherein the terminal installed therein is double-hung and fixed and at the same time has a waterproof function.

In an electric vehicle or hybrid vehicle, a high voltage battery is used to drive a driving source, and the battery is charged through a charging connector. A charging connector installed in a vehicle is called an inlet connector, and this inlet connector can receive power when combined with a plug connector installed in a charging station.

Since a high voltage is provided at the charging station, the stability of the electrical connection is important. In order to increase the stability of the electrical connection, it is necessary to keep the terminal installed inside the charging connector firmly fixed without being separated from the charging connector. To this end, by assembling a rear holder, which is a kind of cover, on the back of the charging connector, it is possible to support the terminal once more from the rear.

And, since this charging station can be used in a state exposed to the external environment, waterproof performance is also required. That is, the inlet connector and the plug connector must have a waterproof function to prevent moisture from entering the inside. For this purpose, a waterproof seal is installed on the charging connector. The waterproof seal is also installed at the inlet where the wire connected to the terminal is discharged to the outside, preventing moisture from entering into the gap between the inlet and the wire. At this time, the waterproof seal can be compressed by the rear holder to increase the waterproof performance.

However, when the rear holder is assembled to the charging connector and the seal is compressed inward, the seal pressed on the rear holder pushes the terminal. This can cause the terminal to be out of position inside the charging connector. Accordingly, it is difficult to accurately fit the terminals, and as a result, the stability of the electrical connection may be deteriorated or a short circuit may occur as a result of deviation from the originally designed position.

To solve this, if the compression amount of the seal is reduced, the waterproof performance of the charging connector is lowered. In addition, if the seal is installed inside to directly surround the terminal rather than around the inlet where the terminal is inserted, so that the cover does not press the seal, moisture flows in through the inlet, and there is a problem that the waterproof performance is also deteriorated.

On the other hand, if the seal is twisted to either side while the seal is compressed by the cover, the seal is not compressed evenly throughout and the amount of compression on either side increases. In this case, the waterproof performance of the side with a relatively small amount of compression may be lowered and moisture may be introduced, and there is a problem that the operation reliability of the charging connector is deteriorated.

Republic of Korea Patent Registration 10-1794354 Republic of Korea registered patent 10-1801396

The present invention is to solve the problems of the prior art as described above, and an object of the present invention is to fix the rear of the charging terminal installed inside the charging connector with the rear holder once more, even if the rear holder is compressed by pressing the waterproof seal This is to prevent the compressive force of the waterproof seal from being transmitted to the charging terminal.

Another object of the present invention is to allow the waterproof seal to be compressed evenly as a whole when the waterproof seal is compressed by the rear holder.

According to a feature of the present invention for achieving the above object, the present invention provides a charging housing having a terminal installation space therein, and a contact part that is accommodated in the terminal installation space and protrudes in the direction of the terminal installation space. A charging terminal that is primarily fixed by hanging inside the space, an inner housing made of an insulating material that is installed in the terminal installation space and surrounds the outside of the charging terminal at a position adjacent to the entrance of the terminal installation space, and assembled to the charging housing and a rear holder and a wire seal for supporting the rear of the inner housing and secondarily fixing the charging terminal connected to the inner housing.

And, the wire seal is installed to surround the charging wire connected to the charging terminal at a position adjacent to the entrance of the terminal installation space, located between the inner housing and the rear holder, compressed between the inner housing and the rear holder can be

In addition, the inner housing surrounds the rear portion of the charging terminal adjacent to the entrance of the terminal installation space, at least a portion of the inner housing is caught inside the terminal installation space movement is restricted.

In addition, the inner housing is movable relative to the charging terminal within a predetermined section along the longitudinal direction of the charging terminal in a state that surrounds the charging terminal.

In addition, the inner housing has a pressure plate that presses the wire seal in the direction of the rear holder, and the pressure plate is caught at the entrance of the terminal installation space to limit the degree of movement of the inner housing to the inside of the terminal installation space. .

In addition, the pressure plate has a flat surface that is in close contact with the wire seal, so that the pressure plate and the wire seal are in surface contact with each other.

In addition, a locking protrusion protrudes from the pressure plate of the inner housing opposite to the surface in contact with the inner seal, and the locking protrusion is fitted into a locking groove provided in the terminal installation space to prevent the inner housing from rotating in the terminal installation space. can be

In addition, a fixing jaw protrudes from the contact portion protruding from the charging terminal in the direction of the opposite terminal, and the charging terminal is primarily fixed by being caught by the lance in the terminal installation space, and the body portion of the charging terminal is relatively larger than the contact portion. The lower surface of the body part facing the entrance of the terminal installation space having a diameter is supported by the upper end of the inner housing and is secondarily fixed.

In addition, the pressing plate of the inner housing may have a coupling protrusion protruding in the direction of the rear holder, and the coupling protrusion may pass through a coupling hole through the wire seal to be in contact with the rear holder.

In addition, the length of the coupling protrusion is smaller than the thickness of the wire seal before compression, and when the wire seal is compressed by the rear holder, the end of the coupling protrusion passes through the coupling hole to contact the rear holder. there is.

In addition, the inner housing may surround the connection portion of the charging terminal and the charging wire to shield the connection portion from being exposed to the outside.

A terminal seal may be coupled to the surface of the body of the charging terminal, and the terminal seal may be coupled to a position spaced apart from the bottom of the body toward the inner housing in the direction of the fixing jaws of the body.

In addition, the inner housing includes a coupling body surrounding the outside of the charging terminal, and a pressure plate formed on the back of the coupling body facing the wire seal to be in close contact with the wire seal, the pressure plate facing the wire seal The surface may be configured as a flat surface to be in surface contact with the wire seal.

In addition, an open portion for exposing a portion of the charging terminal to the outside may extend in a longitudinal direction of the charging terminal on the coupling body of the inner housing.

In addition, the coupling body of the inner housing wraps around the outside of the charging terminal, and the upper end of the coupling body of the inner housing contacts the bottom of the body of the charging terminal to prevent the charging terminal from being separated in the rear holder direction. can do.

According to another feature of the present invention, the present invention includes a charging housing having a terminal installation space therein, a charging terminal accommodated in the terminal installation space, and a contact portion protruding in the direction of the opposite terminal is electrically connected to the opposite terminal; An inner housing made of an insulating material assembled to the charging terminal at a position adjacent to the entrance of the terminal installation space, and the charging terminal assembled with the inner housing and the inner housing by supporting the rear of the inner housing when assembled to the charging housing It includes a rear holder and a wire seal to prevent it from being separated. The wire seal is installed to surround the charging wire connected to the charging terminal, and is positioned between the inner housing and the rear holder to be compressed between the inner housing and the rear holder.

The charging connector according to the present invention as described above has the following effects.

In the present invention, the charging terminal is primarily fixed by hanging from the inside of the charging housing, and a rear holder is installed at the rear of the charging terminal to secondaryly fix the charging terminal. As described above, since the charging terminals are respectively fixed at least at two places, the charging terminals can be stably fixed, electrical connection safety is improved, and thus operation reliability is also improved.

And, in the present invention, an inner housing is installed inside the charging housing to surround the charging terminal, and a wire seal for waterproofing is located between the inner housing and the rear holder. In this case, even if the rear holder pushes and compresses the wire seal from the rear, the compressive force of the wire seal is transmitted only to the inner housing, and the charging terminal does not receive the compressive force of the wire seal. Accordingly, the charging terminal can maintain a constant installation position, and the connection with the counterpart terminal can also be stably maintained.

In addition, in the present invention, there is a pressure plate in the inner housing to press the wire seal in the direction of the rear holder. Accordingly, when the wire seal is compressed, it can be compressed evenly as a whole without twisting to either side, thereby improving the waterproof performance of the connector.

And, in the connector of the present invention, an insulator inner housing is installed inside the external charging housing to surround the rear of the charging terminal. The inner housing expands the area where the charging terminal comes into contact with the insulating part inside the connector. In particular, the inner housing wraps the connection part between the charging terminal and the charging wire so that the connection part is not exposed to the outside, so the insulation of the connector is improved. has the effect of being

In addition, the inner housing is separate from the charging terminal and may be separately injection-molded and then inserted into the back of the charging terminal. Therefore, the complex structure for compressing the wire seal and hooking and fixing the charging terminal to the inside of the connector is handled by the injection-molded inner housing, and the charging terminal plays the role of being assembled with the other terminal and responsible for electrical connection. can be in charge In this way, the structure of the charging terminal is relatively simple, so that processability is improved, and there is an advantage in that the manufacturing cost of the charging terminal can be greatly reduced.

And, in the present invention, a coupling protrusion protrudes in the direction of the rear holder in the inner housing, and the coupling protrusion passes through a coupling hole through the wire seal and comes into contact with the rear holder. In this way, when the rear holder is assembled to the connector, the wire seal is compressed between the rear holder and the inner housing, but is compressed only until the coupling protrusion touches the rear holder. Accordingly, excessive compression of the wire seal can be prevented, and the durability of the wire seal and waterproof performance of the connector can be improved.

1 is a perspective view showing the configuration of an embodiment of a charging connector according to the present invention.
Figure 2 is a perspective view showing an embodiment of the present invention from a different angle from Figure 1;
3 is a perspective view showing a state in which a charging terminal, an inner housing, and a rear holder are separated from the charging housing constituting an embodiment of the present invention;
4 is a cross-sectional view taken along line II' of FIG. 1;
5 is a cross-sectional view illustrating one of the charging terminals in FIG. 4 in a state separated from the charging housing;
6 is a perspective view showing a state in which an inner housing and a wire seal are combined to a charging terminal constituting an embodiment of the present invention;
7 is a perspective view showing a state in which the inner housing and the wire seal are separated from the charging terminal in FIG. 6;
8(a) to 8(c) are assembly flowcharts sequentially showing the process of assembling an embodiment of the charging connector according to 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 elements from other elements, and the essence, order, or order of the elements 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".

The present invention relates to a charging connector, and is a charging connector having a waterproof function. A charging terminal (T1) responsible for electrical connection is installed inside the charging connector of the present invention, and the charging terminal (T1) is primarily fixed by hanging inside the charging housing (10), and the rear of the charging terminal (T1) The second is fixed by the rear holder (80). In addition, the charging connector of the present invention is protected by a waterproof seal and has a waterproof function. Hereinafter, the fixing structure and the waterproof structure of the charging terminal T1 will be described in detail.

The charging connector of the present invention is provided in an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV), etc., and is an inlet connector installed on the side of the vehicle, or a plug connector installed in a charging station may be Hereinafter, the charging connector of the present invention will be described as an example of an inlet connector.

In this embodiment, the appearance and skeleton of the charging connector is made by the charging housing (10). The charging housing 10 has a built-in component therein, including a charging terminal T1 to be described below. The housing body 11 forming the skeleton of the charging housing 10 may be made of an insulating material. The inside of the housing body 11 is penetrated in the front-rear direction, that is, in the coupling direction with a counterpart connector (not shown) to form a terminal installation space 32 .

A plurality of brackets 12 are provided at the edge of the housing body 11 . The bracket 12 is for fixing the charging connector to the inside of the vehicle, and the charging connector may be fixed by fastening a fastener such as a bolt to the bracket 12 .

Referring to FIG. 2 , a drain hole 19 is provided at a lower portion of the housing body 11 . The drain hole 19 is for guiding the water flowing into the charging housing 10 downward, and finally discharging it. That is, the drain hole 19 is for improving the waterproof performance of the charging connector, and may be omitted.

There is a charging part 20 in front of the housing body 11 . The charging unit 20 is connected to a plug connector that is a counterpart connector, and is exposed forward. Although not shown, a separate cover may be coupled to the charging unit 20 to expose the charging unit 20 only when charging. In this embodiment, the charging unit 20 is composed of a first charging unit 21 and a second charging unit 25, which are located at different heights from each other. In this embodiment, the first charging unit 21 is charged with AC current, and the second charging unit 25 is charged with DC current, and separate plug connectors may be connected thereto. The first charging unit 21 and the second charging unit 25 may be used simultaneously or individually, and either one may be omitted.

The first charging unit 21 has an AC connection space 21 , and the second charging unit 25 has a DC connection space 25 . A part of the plug connector is inserted therein, and the AC connection space 21 and the DC connection space 25 are formed in the thickness direction of the housing body 11 (front and rear direction based on FIG. 1). is made through Any one of the first charging unit 21 or the second charging unit 25 may be omitted or provided by changing positions.

1 and 2, it can be seen that the charging wire (W) and the sensing wire (WS) are extended to the rear. The charging wire W and the sensing wire WS are respectively connected to the charging terminals T1 and the sensing terminals TS1 and TS2 to be described below, and transfer power supplied from the plug connector to the battery. In the drawing, the charging wire (W) and the sensing wire (WS) are shown in a cut form in the middle.

Referring to FIG. 2 , there is a terminal insertion part 30 on the rear side of the housing body 11 . The terminal insertion part 30 corresponds to the charging part 20, and becomes a part into which the charging terminal T1 is inserted. The terminal inserting part 30 is provided with the first inserting part 31 and the second inserting part 35 having different heights from each other, similar to the charging part 30 , and the first inserting part 31 has an alternating current. A first charging terminal T1 for supplying power is installed, and a second charging terminal T1 for supplying DC power is installed in the second inserting part 35 . Hereinafter, for convenience of description, the first charging terminal T1 and the second charging terminal T1 will be collectively referred to as the charging terminal T1 and will be given the same reference numerals.

The first insertion part 31 has a first terminal installation space 32 , and the second insertion part 35 has a second terminal installation space 36 . The first terminal installation space 32 and the second terminal installation space 36 are formed by penetrating the housing body 11 in the thickness direction of the housing body 11 (front and rear direction based on FIG. 1 ). Hereinafter, the first terminal installation space 32 will be mainly described, but for convenience, it will be referred to as the terminal installation space 32 .

A first fastening protrusion 33 (refer to FIG. 3) protrudes from the surface of the first inserting part 31, and a second fastening protrusion 37 (refer to FIG. 2) protrudes from the surface of the second inserting part 35. . These first fastening protrusions 33 and second fastening protrusions 37 are for fastening with a first rear holder 81 and a second rear holder 85 to be described below, respectively. The first fastening hook 83 of the first rear holder 81 is caught on the first fastening jaw 33 , and the second fastening hook 87 of the second rear holder 85 is caught on the second fastening jaw 37 . ) takes

Referring to FIG. 3 , the first inserting part 31 and the second inserting part 35 include a first fastening rib 34 and a second fastening rib 39 , respectively. The first fastening rib 34 is formed in the direction in which the first inserting part 31 protrudes from the housing body 11, that is, in the front and rear direction based on the drawings, and the second fastening rib 39 is The second insertion part 35 is formed in a direction to protrude from the housing body 11 . The first fastening ribs 34 and the first fastening ribs 34 are coupled to the first fastening slits 84 and second fastening slits 88 of the rear holder 80 to be described below, respectively, so as to form a rear holder. (80) serves to guide the assembly.

A charging terminal T1 is inserted into the charging housing 10 . The charging terminal T1 is composed of a first charging terminal T1 in which the first inserting part 31 is accommodated, and a second charging terminal T1 being accommodated in the second inserting part 35, which are The same drawing will be given and will be collectively referred to as the charging terminal T1.

Sensing terminals TS1 and TS2 are inserted into the charging housing 10 together with the charging terminal T1. The sensing terminals TS1 and TS2 are for measuring the temperature of the charging connector, and are inserted into the charging housing 10 . One or a plurality of the sensing terminals TS1 and TS2 may be inserted into the charging housing 10. In this embodiment, the sensing terminals TS1 and TS2 are configured in plurality. The sensing terminals TS1 and TS2 are respectively inserted into the first inserting part 31 and the second inserting part 35, and the temperature of the charging terminal T1 accommodated in the first inserting part 31 and the second The temperature of the charging terminal T1 applied to the insertion part 35 may be measured, respectively.

The sensing terminals TS1 and TS2 may be inserted in the same direction as the charging terminal T1 or may be inserted in a different direction. As shown in FIG. 3 , the sensing terminal TS1 inserted into the first inserting part 31 is assembled to the charging housing 10 in the same direction as the charging terminal T1 , whereas the second inserting part 35 ) is inserted into the sensing terminal (TS2) is assembled to the charging housing (10) in a direction orthogonal thereto through the sensing through hole (38).

On the other hand, in this embodiment, the second charging terminal (T1) inserted into the second insertion part (35) among the charging terminals (T1) is composed of two parts (T1, T2), the charging terminal (T1) located in the front ) and a connection terminal (T2) located at the rear relatively. The charging terminal T1 and the connection terminal T2 may be connected to each other by welding or the like. Since the second charging terminal (T1) is supplied with relatively high voltage power, in order to allow this, it may be composed of two parts having a size relatively larger than that of the first charging terminal (T1).

Looking at the structure of the charging terminal T1 in detail, as shown in FIGS. 6 and 7 , the skeleton of the charging terminal T1 is formed by a cylindrical body 51 , and the front of the body 51 is The contact part (reference numeral not assigned) protrudes in the direction of the opposite terminal. The contact portion has an elongated cylindrical shape having a diameter smaller than that of the body portion 51 . The contact portion may be inserted into an empty space on the opposite terminal side and coupled thereto.

The contact portion has a fixed jaw 52 . The fixing jaw 52 is a portion having a larger diameter than the contact portion, and has a substantially ring shape. The fixing jaw 52 is caught on the lance part 32a (refer to FIG. 4 ) in the terminal installation space 32 so that the charging terminal T1 is primarily fixed to the charging housing 10 . In the process in which the fixed jaw 52 rides over the lance unit 32a, the lance unit 32a is elastically deformed and then restored to hang the fixed jaw 52. 4 shows a state in which the lance part 32a hangs the fixing jaw 52 as described above. The fixing jaw 52 is omitted, and the contact portion itself may be caught in the terminal installation space 32 .

A terminal seal (S2) is coupled to the surface of the body portion (51) of the charging terminal (T1). The terminal seal (S2) is coupled to a position spaced apart from the bottom surface (51a) of the body (51) toward the inner housing (55) in the direction of the fixing jaw (52) of the body (51). The terminal seal (S2) may prevent moisture existing around the coupling portion between the charging terminal (T1) and the opposite terminal from flowing in the rear, that is, the wire seal (S1).

The body portion 51 of the charging terminal T1 has a relatively larger diameter than the contact portion. The bottom surface 51a of the body portion 51 is supported by an inner housing 55 to be described below. More precisely, as shown in FIG. 6 , the front part of the inner housing 55 disposed behind the charging terminal T1 supports the bottom surface 51a of the body part 51 . 7, the bottom surface 51a of the body part 51 is indicated, and the bottom surface 51a of the body part 51 has a larger diameter than the portion extending to the rear thereof, so that a step is made, and the step surface is the It becomes the bottom surface (51a) of the body part (51). And since the inner housing 55 is fixed to the terminal installation space 32 by the rear holder 80, it can be secondary fixed to the terminal installation space 32 of the charging terminal T1.

The charging terminal (T1) is assembled to the inner housing (55). The inner housing 55 is installed in the terminal installation space 32 and is made of an insulating material. The inner housing 55 surrounds the outside of the charging terminal T1 at a position adjacent to the entrance of the terminal installation space 32 . The inner housing 55 may surround the charging terminal T1 in the interior of the charging housing 10 , and may be in close contact with the rear holder 80 with a wire seal S1 to be described below interposed therebetween.

The inner housing 55 wraps the rear portion of the charging terminal T1 to increase insulation, and prevents the wire seal S1 from being excessively deformed or from being deformed evenly and being twisted to either side. To this end, the inner housing 55 may be compressed by evenly pressing the wire seal S1 as a whole.

When looking at the configuration of the inner housing 55 with reference to FIGS. 5 to 7 , the inner housing 55 includes a coupling body (reference numeral not given) surrounding the outside of the charging terminal T1, and the coupling body. It includes a pressure plate 55' provided. The coupling body has a substantially cylindrical shape, and there is a coupling space 56 therein. The coupling space 56 is opened in the front-rear direction, and the charging terminal T1 and the charging wire W are located inside the coupling space 56 and are surrounded by the coupling body.

The coupling body of the inner housing 55 has an opening 56a through which a part of the charging terminal T1 is exposed to the outside. The opening portion 56a extends along the longitudinal direction of the charging terminal T1, and is continuously made from the front portion to the rear portion of the coupling body. The opening portion 56a facilitates elastic deformation of the coupling body. More precisely, when the charging terminal (T1) is inserted into the coupling space (56), the coupling body may be elastically deformed in a direction to widen the opening (56a), through which the charging terminal (T1) This can be easily coupled to the inner housing (55).

The pressure plate 55' is a portion having a larger diameter than the coupling body, and has a substantially plate-shaped structure. The pressure plate 55' is a portion formed on the back of the coupling body facing the wire seal S1 to be in close contact with the wire seal S1. That is, with respect to the wire seal (S1), there is a pressure plate 55' at the front, and a rear holder 80 at the rear. Therefore, when the rear holder 80 is assembled to the terminal insertion part 30 while compressing the wire seal S1, both sides of the wire seal S1 are attached to the pressing plate 55' and the rear holder 80, respectively. It can be compressed by pressing.

In this case, the wire seal (S1) is installed to surround the connection portion of the charging terminal (T1) and the charging wire (W) at a position adjacent to the entrance of the terminal installation space (32), the wire seal (S1) It is positioned between the inner housing 55 and the rear holder 80 and compressed between the inner housing 55 and the rear holder 80 .

The pressure plate 55 ′ has a flat rear surface 55 ′ facing the wire seal S1 to make surface contact with the wire seal S1 . In this way, the rear surface 55' of the pressure plate 55' can be in contact with the wire seal S1 in the widest possible area, and the wire seal S1 can be compressed evenly throughout without being distorted in the process of being compressed. there is.

The inner housing 55 surrounds the rear portion of the charging terminal T1 adjacent to the entrance of the terminal installation space 32 , and at least a portion of the inner housing 55 is located inside the terminal installation space 32 . Movement may be restricted. More precisely, as shown in FIG. 4 , the pressing plate 55 ′ has a locking projection 58 , and the locking projection 58 is inserted into the locking groove 32b recessed in the terminal installation space 32 . . In this case, the locking protrusion 58 is inserted into the locking groove 32b so that it cannot move in the front-rear direction, and rotation is also restricted. Therefore, the inner housing 55 can maintain a firmly fixed state without movement in the terminal installation space 32 .

As such, since the inner housing 55 maintains a fixed state in the terminal installation space 32 , the compressive force applied when the rear holder 80 compresses the wire seal S1 is only applied to the inner housing 55 . is transmitted, and is not transmitted to the charging terminal T1. Therefore, even when the rear holder 80 is assembled, the charging terminal T1 can maintain a constant installation position, and the connection with the counterpart terminal can also be stably maintained.

Referring to FIG. 7 , the pressing plate 55 ′ of the inner housing 55 has a coupling protrusion 57 protruding in the direction of the rear holder 80 . The coupling protrusion 57 is a portion passing through the coupling hole S1b through the wire seal S1, and has a substantially circular cross-section. Referring to FIG. 4 , a state in which the coupling protrusion 57 passes through the coupling hole S1b penetrating through the wire seal S1 and comes into contact with the rear holder 80 is shown. In this case, when the rear holder 80 is assembled to the charging housing 10, the wire seal S1 is compressed between the rear holder 80 and the inner housing 55, but the coupling protrusion 57 is the rear holder 80 ) is compressed until it reaches Accordingly, excessive compression of the wire seal S1 can be prevented.

To this end, the length of the coupling protrusion 57 is smaller than the thickness of the wire seal S1 before being compressed, and when the wire seal S1 is compressed by the rear holder 80, the coupling protrusion 57 of An end portion may pass through the coupling hole S1b to be in contact with the rear holder 80 . In this way, the inner housing 55 surrounds the connection portion between the charging terminal T1 and the charging wire W to shield the connection portion from being exposed to the outside, thereby increasing the insulation of the connector.

In addition, the inner housing 55 is separate from the charging terminal T1 and may be separately injection-molded and then inserted into the rear of the charging terminal T1. Therefore, the complex structure for compressing the wire seal (S1) and fixing the charging terminal (T1) to the inside of the charging housing (10) is in charge of the injection-molded inner housing (55) side, and the opposite terminal It is assembled with the charging terminal (T1) to take charge of the electrical connection. In this way, the structure of the charging terminal T1 may be relatively simple.

In the present embodiment, the inner housing 55 may move relative to the charging terminal T1 within a predetermined section along the longitudinal direction of the charging terminal T1 in a state of surrounding the charging terminal T1. That is, the inner housing 55 is not fixed to the charging terminal T1, but may be coupled to be relatively movable. Accordingly, even if an error exceeding the allowable error occurs in the manufacturing process of the inner housing 55 or the charging housing 10, it is possible to compensate to some extent, and the assembly between the inner housing 55 and the charging terminal T1 becomes easy. .

On the other hand, referring to FIG. 7 , a coupling hole S1b through which the coupling protrusion 57 passes is passed through the wire seal S1, and a wire hole S1a through which the charging wire W passes is passed through. In addition, a rotation preventing part S1c may protrude from the wire seal S1, and the rotation preventing part S1c protrudes in the direction of the inner housing 55 to form a coupling space 56 of the inner housing 55. ) can be inserted into In this case, the rotation of the wire seal (S1) is prevented. However, when the coupling protrusion 57 is inserted into the coupling hole (S1b), the same function can be performed, so the rotation preventing part (S1c) may be omitted.

Referring to FIG. 5 , a portion of the sensing terminal TS1 is exposed inside the terminal installation space 32 in which the charging terminal T1 is installed. More precisely, the sensing connection passage 32c is opened in the terminal installation space 32 , and the sensing terminal TS1 is exposed toward the terminal installation space 32 through the sensing connection passage 32c. In this case, a part of the sensing terminal TS1 may be in contact with the charging terminal T1 through the sensing connection passage 32c.

The sensing terminal TS1 has a contact means 60 . The contact means 60 is for measuring the temperature of the sensing terminal (TS1) in contact with the charging terminal (T1), in contact with the sensing terminal (TS1). The contact means 60 may be configured as a context spring, and the context spring may be coupled to the sensing terminal TS1 to transmit the temperature of the charging terminal T1 to the sensing terminal TS1. In the present embodiment, the contact means 60 is composed of a lamellae spring. On the contrary, the contact means 60 may be composed of various elastic materials, or may be composed of parts without elastic force.

In addition, since the sensing terminal TS1 is not for electrical connection with the charging terminal T1, but for measuring the temperature of the charging terminal T1, it may be configured as a temperature sensor. The temperature information of the charging terminal T1 measured by the sensing terminal TS1 may be transmitted to a controller (not shown) through the sensing wire WS. If the charging terminal T1 is overheated, the control unit may recognize this and notify the user or stop the operation of the charging connector.

Next, looking at the rear holder 80 , when the rear holder 80 is assembled to the charging housing 10 , the charging terminal T1 is connected to the inner housing 55 by supporting the rear of the inner housing 55 . ) serves as a secondary fixation. More precisely, the rear holder 80 is assembled to the first insertion part 31 and the second insertion part 35 of the charging housing 10 with the wire seal S1 interposed therebetween, and the charging terminal T1 ) to prevent separation.

The rear holder 80 includes a first rear holder 81 and a second rear holder 85 . The first holder is coupled to the first insertion part 31 , and the second rear holder 85 is disposed below the first rear holder 81 and coupled to the second insertion part 35 . The first rear holder 81 and the second rear holder 85 may be integrally formed or separate from each other. In this embodiment, the first rear holder 81 and the second rear holder 85 are separate from each other, and the first rear holder 81 and the second rear holder 85 are each composed of two parts. and can be assembled.

Referring to FIG. 3 , a first wire hole 82 through which a charging wire W passes is penetrated in the first holder body 81a and 81b of the first rear holder 81 , and the first insertion part 31 ) there is a first fastening hook 83 caught on the first fastening jaw 33 . The first holder bodies 81a and 81b have first assembly parts 81a' and 81b', so that the first holder bodies 81a and 81b made of two parts can be assembled with each other. Of course, the first holder body (81a, 81b) may be made of one part.

In addition, the first rear holder 81 has a first fastening slit 84 . The first fastening slit 84 extends along a direction in which the first rear holder 81 is assembled to the first inserting part 31 , and the first fastening ribs 34 of the first inserting part 31 . ) is inserted into the first fastening slit 84 . A plurality of the first fastening slits 84 may be formed in the first rear holder 81 . In this embodiment, a total of four first fastening slits 84 are in the first rear holder 81 . .

The first rear holder 81 has a first sensing hole 84'. The first sensing hole 84 ′ is a hole through which the sensing wire WS connected to the above-described sensing terminal TS1 passes, and the first rear holder 81 is assembled to the first insertion unit 31 . , and at the same time, in this embodiment, the first sensing hole 84 ′ is also opened toward the side surface of the first rear holder 81 and is connected to the first fastening slit 84 .

A second wire hole 86 through which the charging wire W passes is passed through the second holder body 85a and 85b of the second rear holder 85 , and the second insertion part 35 is coupled with the second fastening portion 35 . There is a second fastening hook 87 caught on the jaw 37 . The second holder bodies 85a and 85b have second assembly parts 85a' and 85b', so that the second holder bodies 85a and 85b made of two parts can be assembled with each other. Of course, the second holder body (85a, 85b) may be made of one part.

In addition, the second rear holder 85 has a second fastening slit 88 . The second fastening slit 88 extends along the direction in which the second rear holder 85 is assembled to the second inserting part 35 , and the second fastening rib 39 of the second inserting part 35 . ) is inserted into the second fastening slit 88 . A plurality of the second fastening slits 88 may be formed in the second rear holder 85 . In this embodiment, a total of four second fastening slits 88 are in the second rear holder 85 . .

The second rear holder 85 has a second sensing hole 88 ′. The second sensing hole 88' is a hole through which the sensing wire WS connected to the above-described sensing terminal TS2 passes, and in this embodiment, the second sensing hole 88' is the second rear holder ( 85) in the lateral direction. The second sensing hole 88 ′ is connected to the sensing through hole 38 of the second insertion part 35 . Reference numeral B, which is not described, is a bolt for more firmly fixing the second rear holder 85 to the second insertion part 35 . The bolt (B) may be omitted.

Next, a process of assembling the charging connector according to the present invention will be described. 8 shows the process of assembling the charging connector sequentially. First, the operator may assemble the charging terminal T1 and the inner housing 55 before assembling the charging terminal T1 in the charging housing 10 .

Referring to FIG. 7 , the inner housing 55 is inserted into the coupling portion between the charging terminal T1 and the charging wire W. For this purpose, the opening portion 56a of the inner housing 55 is widened in a direction The coupling body of the inner housing 55 is spread apart, and the connection part of the charging terminal T1 and the charging wire W is inserted into the wide open part 56a.

Then, the wire seal (S1) can be coupled to the charging wire (W), and while the wire seal (S1) passes through the wire hole (S1a) of the wire seal (S1), the wire seal on the charging wire (W) (S1) may be combined. At this time, the wire seal (S1) may be pre-inserted into the charging wire (W), or the periphery of the wire hole (S1a) of the wire seal (S1) is cut to open the wire hole (S1a) to the side for charging. A wire (W) may be inserted.

In this case, as shown in FIG. 6 , the charging terminal T1, the inner housing 55, and the wire seal S1 are in a combined state. In this state, the charging terminal T1 may be inserted through the first insertion part 31 to accommodate the charging terminal T1 in the terminal installation space 32 . In this process, the fixed jaw 52 in the charging terminal T1 is caught by the lance part 32a in the terminal installation space 32 (refer to FIG. 4) so that the charging terminal T1 is connected to the charging housing 10 is fixed first in

And, after all of the charging terminals T1 are assembled in the charging housing 10 through the first inserting part 31 and the second inserting part 35, the sensing terminals TS1 and TS2 are also connected to the charging housing. (10) is assembled. The sensing terminals TS1 and TS2 are for measuring the temperature of the charging terminal T1, and are installed to partially contact the charging terminal T1. 5, the charging terminal T1 is exposed toward the terminal installation space 32 through the sensing connection passage 32c, so that a part of the sensing terminal TS1 is part of the sensing connection passage. It may be in contact with the charging terminal T1 through (32c).

As shown in Figure 8 (b), when the charging terminal (T1) and the sensing terminals (TS1, TS2) are all assembled in the charging housing 10, finally the first rear holder 81 in the charging housing 10 and the second rear holder 85 are assembled. When the first rear holder 81 and the second rear holder 85 are assembled to the first inserting part 31 and the second inserting part 35 of the charging housing 10, respectively, FIG. 8(c) and assembly is completed together.

At this time, when the first rear holder 81 and the second rear holder 85 are assembled to the charging housing 10, the wire seal S1 is compressed in the process. When the first rear holder 81 and the second rear holder 85 are coupled to the rear of the charging housing 10, the first rear holder 81 and the second rear holder 85 are connected to the wire seal ( S1) will be compressed.

Referring to FIG. 4 , when the first rear holder 81 is assembled to the first insertion part 31 , the wire seal S1 is disposed between the first rear holder 81 and the inner housing 55 . compressed in At this time, since the movement of the inner housing 55 in the front-rear direction inside the terminal installation space 32 is limited, the pressing plate 55 ′ of the inner housing 55 presses the wire seal S1 together. can That is, since there is a pressing plate 55 ′ at the front of the wire seal S1 and a rear holder 80 at the rear, the first rear holder 81 compresses the wire seal S1 while compressing the wire seal S1 . When assembled to the terminal inserting part 30, both sides of the wire seal S1 are pressed against the pressing plate 55' and the first rear holder 81, respectively.

At this time, the pressure plate 55 ′ has a flat rear surface 55 ′ facing the wire seal S1 to make surface contact with the wire seal S1 , and the wire seal S1 is compressed in the process of being compressed. It can be compressed evenly throughout without being distorted. In this way, the waterproof function of the wire seal (S1) can be improved.

As a result, since the inner housing 55 is fixed to the terminal installation space 32 by the rear holder 80 , it can be secondarily fixed to the terminal installation space 32 of the charging terminal T1 . At this time, since the inner housing 55 maintains a fixed state in the terminal installation space 32 , the compressive force applied when the rear holder 80 compresses the wire seal S1 is transmitted only to the inner housing 55 . and is not transmitted to the charging terminal T1. Accordingly, the charging terminal T1 can maintain a constant installation position, and the connection with the counterpart terminal can also be stably maintained.

In the above, even though it has been described that all components constituting the embodiment according to the present invention operate in combination or combined into one, 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 specified, 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. Terms commonly used, such as those defined in the dictionary, should be construed as being consistent with the contextual meaning of the related art, and should not be construed in an ideal or excessively formal sense 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: charging housing 11: housing body
20: charging part 30: terminal insertion part
31: first insertion part 32: first terminal installation space
35: second insertion part 36: second terminal installation space
50: charging terminal 52: fixed jaw
55: inner housing 55': pressure plate
56a: opening 80: rear holder
81: first rear holder 85: second rear holder
S1: wire seal S2: terminal seal
T1: charging terminal T2: connection terminal
TS1, TS2: Sensing terminal

Claims (15)

Charging housing with terminal installation space inside;
a charging terminal accommodated in the terminal installation space, the contact portion protruding in the direction of the opposite terminal is primarily fixed by being caught inside the terminal installation space;
an inner housing installed in the terminal installation space and made of an insulating material that surrounds the outside of the charging terminal at a position adjacent to the entrance of the terminal installation space;
When assembled in the charging housing, the rear holder supports the rear of the inner housing to secondaryly fix the charging terminal located in the front of the inner housing; and
Installed to surround at least a portion of the charging wire connected to the charging terminal at a position adjacent to the entrance of the terminal installation space, the wire seal is located between the inner housing and the rear holder and compressed between the inner housing and the rear holder including;
A fixing jaw protrudes from the contact part protruding from the charging terminal in the direction of the opposite terminal, and the charging terminal is primarily fixed by hooking on the lance part in the terminal installation space, and the body of the charging terminal has a relatively larger diameter than the contact part. A charging connector in which the lower surface of the body part facing the entrance of the terminal installation space is supported on the upper end of the inner housing and fixed secondary.
The charging connector according to claim 1, wherein the inner housing surrounds a rear portion of the charging terminal adjacent to the entrance of the terminal installation space, and at least a portion of the inner housing is caught inside the terminal installation space to restrict movement.
The charging connector according to claim 1, wherein the inner housing is capable of moving relative to the charging terminal within a predetermined section along the longitudinal direction of the charging terminal while surrounding the charging terminal.
The method according to claim 1, wherein the inner housing has a pressure plate for pressing the wire seal in the direction of the rear holder, the pressure plate is caught at the entrance of the terminal installation space The degree of movement of the inner housing to the inside of the terminal installation space is limited charging connector.
The charging connector according to claim 4, wherein the pressure plate has a flat surface in close contact with the wire seal, and the pressure plate and the wire seal are in surface contact with each other.
[Claim 5] The terminal installation space of claim 4, wherein a locking protrusion protrudes from the pressure plate of the inner housing opposite to the surface contacting the wire seal, and the locking projection is fitted into a locking groove provided in the terminal installation space to rotate the inner housing in the terminal installation space. charging connector that can be prevented from doing so.
delete The charging connector according to claim 4, wherein the pressure plate of the inner housing has a coupling protrusion protruding in the direction of the rear holder, and the coupling protrusion passes through a coupling hole through the wire seal and comes into contact with the rear holder.
The method according to claim 8, wherein the length of the coupling protrusion is smaller than the thickness of the wire seal before compression, and when the wire seal is compressed by the rear holder, the end of the coupling protrusion passes through the coupling hole to the rear holder. Contact charging connector.
The charging connector according to claim 1, wherein the inner housing surrounds a connection portion between the charging terminal and the charging wire to shield the connection portion from being exposed to the outside.
The charging connector according to claim 1, wherein a terminal seal is coupled to a surface of the body of the charging terminal, and the terminal seal is coupled to a position spaced apart from a bottom surface of the body toward the inner housing in a fixing jaw direction of the body.
The method according to claim 1, wherein the inner housing
a coupling body surrounding the outside of the charging terminal;
and a pressure plate formed on the back of the coupling body toward the wire seal and in close contact with the wire seal;
The pressure plate has a flat surface facing the wire seal, and the charging connector is in surface contact with the wire seal.
The charging connector according to claim 12, wherein an open portion for exposing a portion of the charging terminal to the outside of the coupling body of the inner housing extends along the longitudinal direction of the charging terminal.
The method according to claim 12, wherein the coupling body of the inner housing is wrapped around the outside of the charging terminal, the upper end of the coupling body of the inner housing is in contact with the bottom surface of the body of the charging terminal to separate the charging terminal in the direction of the rear holder charging connector to prevent
Charging housing with terminal installation space inside;
a charging terminal accommodated in the terminal installation space and electrically connected to the opposite terminal, wherein the contact portion protruding in the direction of the opposite terminal;
an inner housing made of an insulating material assembled to the charging terminal at a position adjacent to the entrance of the terminal installation space;
a rear holder that, when assembled to the charging housing, supports the rear of the inner housing to prevent separation of the inner housing and the charging terminal assembled with the inner housing;
A wire seal installed to surround at least a portion of the charging wire connected to the charging terminal, positioned between the inner housing and the rear holder, and compressed between the inner housing and the rear holder;
A fixing jaw protrudes from the contact part protruding from the charging terminal in the direction of the opposite terminal, and the charging terminal is primarily fixed by hooking on the lance part in the terminal installation space, and the body of the charging terminal has a relatively larger diameter than the contact part. A charging connector in which the lower surface of the body part facing the entrance of the terminal installation space is supported on the upper end of the inner housing and fixed secondary.

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