KR20190071498A - High voltage connector - Google Patents

Abstract

The present invention relates to a high-voltage connector which improves a structure so as not to be separated while supplying high-voltage power. To this end, the high-voltage connector comprises: a first connector having a latching member installed on one side; a second connector having a locking member provided to be latched in the latching member and a transfer member capable of transferring the locking member back and forth along a predefined transfer path so as to enable the locking member to be latched in the latching member or to be separated from the latching member; and a controller for controlling the transfer member to enable the locking member to be latched in the latching member when a predefined locking condition is satisfied.

Description

{HIGH VOLTAGE CONNECTOR}

The present invention relates to a high voltage connector.

Fuel cells are devices that generate electricity through oxidation-reduction reaction of hydrogen and oxygen. The fuel cell vehicle equipped with such a fuel cell uses a high voltage power source of 300 V to 800 V. These high-voltage power supplies are mainly delivered to individual components using wiring and high-voltage connectors.

The high-voltage connector is a connector for transmitting a high-voltage power supply to a level at which the worker can be charged, so that the worker must be provided with an electric shock prevention function. To this end, the conventional high-voltage connector is provided with an interlock circuit capable of checking whether the male connector and the female connector are completely fastened to each other, in case the high-voltage connector is disconnected in a situation where high-voltage power is supplied to the high- And a relay that is closed so that the high voltage power can be transmitted to the wiring when it is confirmed that the male connector and the female connector are completely fastened. Such a conventional high-voltage connector is disadvantageous in that the above-described interlock structure and relay can not be a fundamental solution for preventing electric shock because there is a possibility that the male connector and the female connector are separated from each other in a situation where a high voltage power is supplied to the high- There is a problem in that the installation cost is increased due to the installation of the relays.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a high voltage connector which is improved in structure so as not to be disconnected in a state where a high voltage power supply is provided.

Further, it is an object of the present invention to provide a high-voltage connector in which the structure is improved so as to omit the installation of a relay for interrupting a high-voltage power supply.

According to a preferred embodiment of the present invention, there is provided a high voltage connector comprising: a first connector having a latching member installed on one side; And a conveying member capable of reciprocatingly moving the locking member along a predetermined conveying path so that the locking member is engaged with the engaging member or separated from the engaging member, A second connector to which the first connector is fastenable; And a controller for controlling the conveying member such that the locking member is engaged with the retaining member when the predetermined locking condition is satisfied.

Preferably, the controller drives the conveying member so that the locking member engages with the engaging member when the first connector is fastened to the predetermined position of the second connector.

Preferably, the interlock circuit further comprises a interlock circuit that is configured to be capable of configuring a closed circuit when the first connector is fastened to the second position of the second connector, wherein the controller, when the closed circuit is configured, It is determined that the second connector is fastened at the predetermined position.

Preferably, the interlock circuit includes a first interlock terminal mounted on the first connector, and a second interlock terminal mounted on the second connector, wherein the first interlock terminal and the second interlock terminal, The locking terminal is provided to selectively configure the closed circuit when the first connector is fastened to the second position of the second connector.

Preferably, the latching member has a latching hole formed so that the latching member can be inserted.

Preferably, the second connector further comprises a housing provided at one side thereof, and the housing includes: a housing space in which the locking member is received so as to be reciprocally movable along the feeding path; And at least a part of the engaging member is inserted into the opening.

Preferably, the controller drives the conveying member such that the locking member is inserted into the retaining hole when the retaining hole is located on the conveyance path.

Preferably, the opening is formed such that when the first connector is fastened at a predetermined position of the second connector, the at least a part of the engaging member is inserted into the accommodating space through the opening, As shown in FIG.

Preferably, the locking member has a rack gear formed on one surface thereof, and the feeding member has a pinion gear engaged with the rack gear, and a driving motor for rotationally driving the pinion gear.

Preferably, at least a part of the locking member is made of a magnetic material, and the conveying member has an electromagnet capable of transferring the locking member toward the locking hole by using a magnetic force so that at least a part of the locking member is inserted into the locking hole .

Preferably, the electromagnet has a magnetic block disposed to face the locking member and a coil for selectively magnetizing the magnetic block using a current supplied from the outside.

Preferably, the conveying member further includes a return spring provided so as to be elastically biased in a direction in which the locking member is spaced apart from the engaging hole.

Preferably, the housing further includes a stopper formed to support one end of the return spring, and the locking member has a flange formed to support the other end of the return spring.

Preferably, the locking member is staggered by a predetermined angle between a fastening direction of the first connector and a fastening direction of the locking member.

The present invention relates to a high-voltage connector, and more particularly to a high-voltage connector in which connectors are fastened to each other in a state in which a high-voltage power supply is supplied, such as when the vehicle is starting or running, using engagement between a latching member of the first connector and a locking member of the second connector Can be prevented. According to the present invention, since the connectors are disconnected in a state where the high voltage power is supplied, the electric shock of the worker can be fundamentally prevented. In addition, according to the present invention, even if the relay for cutting off the power supplied to the connectors is removed, the worker can be prevented from electric shock, so that the installation cost of the high voltage connector can be reduced through elimination of the expensive relay.

1 is a view showing a state in which a first connector and a second connector are separated in a high voltage connector according to a first embodiment of the present invention.
2 is a view showing a state in which the first connector and the second connector shown in Fig. 1 are engaged; Fig.
Fig. 3 is a view showing a state in which the locking member of the first connector and the locking member of the second connector shown in Fig. 2 are separated from each other. Fig.
4 is a view showing a state in which the locking member of the second connector is engaged with the locking member of the first connector shown in Fig.
FIG. 5 is a flowchart for explaining a method of locking or unlocking the first connector and the second connector shown in FIG. 1;
6 is a view showing a state in which the latching member of the first connector and the locking member of the second connector are separated from each other in the high voltage connector according to the second embodiment of the present invention.
7 is a view showing a state in which the locking member of the second connector is engaged with the locking member of the first connector shown in Fig.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

1 is a view showing a state in which a first connector and a second connector are separated from each other in a high voltage connector according to a first embodiment of the present invention. FIG. 3 is a view showing a state in which the latching member of the first connector and the locking member of the second connector shown in FIG. 2 are separated from each other.

1 to 3, a high voltage connector 1 according to a first embodiment of the present invention includes a first connector 10 having an engaging member 14; A second connector (20) having a locking member (23) provided so as to be engageable with the latching member (14) and a transfer member (24) capable of reciprocatingly transferring the locking member (23); An interlock circuit (30) for confirming whether or not the first connector (10) and the second connector (20) are fastened; And a controller 40 for controlling the conveying member 24 so that the locking member 23 is hooked to the engaging member 14 to lock the first connector 10 when the predetermined locking condition is satisfied .

First, the first connector 10 may be composed of a male connector which is fastened to the second connector 20 at least partly by being inserted into the second connector 20. However, the present invention is not limited thereto, and the first connector 10 may be formed of a female connector.

1, this first connector 10 has terminals 12 electrically connected to the wiring 16 and at least two connectors 10 at the time of fastening of the first connector 10 and the second connector 20, An engaging member 14 that is installed to be inserted into the second connector 20 at a portion thereof, and the like.

As shown in FIG. 1, the terminals 12 are installed in the inner space of the first connector 10 so as to be electrically insulated from the outside. Each terminal 12 can be electrically connected to a wiring 16 capable of transmitting a high voltage power. Since these terminals 12 have the same structure as a terminal of a general high-voltage connector, a detailed description thereof will be omitted.

The engaging member 14 is provided at one side of the first connector 10 so that at least a portion of the engaging member 14 can be inserted into the housing 22 of the second connector 20 when the first connector 10 and the second connector 20 are fastened. Respectively. For example, as shown in Figs. 1 and 2, when the first connector 10 and the second connector 20 are fastened, the engaging member 14 is inserted into the through- (Not shown) so as to be inserted into the opening 22b of the housing 22 to be described later. As shown in FIG. 1, the latching member 14 may have a latching hole 14a formed therein to allow insertion of a locking member 23, which will be described later.

Next, the second connector 20 may be constituted by an female connector which is insertably insertable at least a part of the first connector 10. However, the second connector 20 may be formed of a male connector in the case where the first connector 10 is formed of an female connector, but not limited thereto.

1 and 3, the second connector 20 includes connecting terminals 21 connected to the terminal 12 at the time of fastening the first connector 10 and the second connector 20, A housing 22 for providing a predetermined installation space, a locking member 23 provided so as to be engageable with the locking member 14 and a locking member 23 which is engaged with the locking member 14, A transferring member 24 capable of reciprocatingly transferring the locking member 23 along a predetermined transfer path, and the like.

1, the connection terminals 21 can be connected to any one of the terminals 12 corresponding to each other during the fastening of the first connector 10 and the second connector 20 In the inner space of the second connector (20). A wiring 25 capable of transmitting a high voltage power source can be electrically connected to each connection terminal 21. Since the connection terminals 21 have the same structure as the connection terminals of general high-voltage connectors, a detailed description thereof will be omitted.

The housing 22 is installed at one side of the second connector 20 so that at least a part of the engaging member 14 is inserted. For example, as shown in FIGS. 1 and 2, the housing 22 has through holes formed in the outer wall of the second connector 20 when the first connector 10 and the second connector 20 are fastened. At least a part of the penetrating latching member 14 may be installed at the rear end of the second connector 20 so as to be inserted into the housing 22. The locking member 23 and the conveying member 24 may be installed in such a housing 22. The details of the locking member 23 and the conveying member 24 will be described later.

Next, the interlock circuit 30 is a device for detecting whether or not the first connector 10 is completely fastened to the predetermined position of the second connector 20. The interlock circuit 30 is provided so as to constitute a closed circuit when the first connector 10 is fastened in the correct position of the second connector 20. 1 and 2, the interlock circuit 30 includes a first interlock terminal 32 mounted on the first connector 10 and a second interlock terminal 32 mounted on the second connector 20, A second interlock terminal 34, and the like. 2, the first interlock terminal 32 and the second interlock terminal 34 are interconnected when the first connector 10 is fastened in place in the second connector 20 , And a controller 40 and a power source 36 for interlocking are electrically connected to each other. Therefore, in the interlock circuit 30, when the first interlock terminal 32 and the second interlock terminal 34 are disconnected and the open circuit is formed, the first connector 10 is electrically connected to the second connector When the first interlock terminal 32 and the second interlock terminal 34 are connected to each other to constitute a closed circuit, the first connector 10 can be positioned at a predetermined position of the second connector 20 It can be judged that it is in the engaged state.

Next, the controller 40 is provided so as to be able to control the overall drive of the high voltage connector 1. [ When the predetermined locking condition is satisfied, the controller 40 locks the locking member 23 in the locking hole 14a of the locking member 14 so that the first connector 10 is locked by the locking member 23 So that the conveying member 24 can be driven as much as possible. The locking condition of the first connector 10 is not particularly limited. For example, when the controller 40 determines that the interlock circuit 30 has fastened the first connector 10 to the correct position of the second connector 20, the locking member 23 is locked by the interlocking circuit 30, It is possible to drive the conveying member 24 so as to engage with the engagement hole 14a of the support member 14.

1 and 2, reference numerals '18' and '26' respectively denote a first coupling member provided in the first connector 10 and a second coupling member provided in the second connector 20, Member. The first engaging member 18 and the second engaging member 26 are provided for assisting the engaging member 14 and the locking member 23, They are arranged to be coupled to each other at the time of fastening. For example, the first engaging member 18 may be an engaging hook, and the second engaging member 27 may be an engaging groove to which the first engaging member 18 can be hook-engaged.

4 is a view showing a state in which the locking member of the second connector is engaged with the latching member of the first connector shown in Fig.

3, the housing 22 includes a receiving space 22a in which the locking member 23 is reciprocally received along a predetermined conveying path, a holding hole 14a of the engaging member 14, An opening 22b formed so that at least a part of the engaging member 14 can be inserted into the accommodating space 22a so as to be positioned on the conveying path of the locking member 23, And a latching groove 22c for fixing a predetermined position to each other.

3, the accommodation space 22a is formed inside the housing 22 so that the locking member 23 is accommodated. The accommodating space 22a is formed such that the engaging direction of the first connector 10 and the conveying direction of the locking member 23 are staggered from each other by a predetermined angle. For example, the accommodation space 22a is formed such that the fastening direction of the first connector 10 and the conveying direction of the locking member 23 are perpendicular to each other. Here, the fastening direction of the first connector 10 is a direction in which the first connector 10 is fastened to the second connector 20 so that the first interlock terminal 32 and the second interlock terminal 34 are mutually connected And the conveying direction of the locking member 23 refers to the direction in which the locking member 23 is conveyed by the conveying member 24 and is inserted into the retaining hole 14a of the retaining member 14. [

As shown in Fig. 3, the opening 22b is formed at one side wall of the housing 22. The opening 22b is formed so that the through hole formed in the outer wall of the second connector 20 and the accommodation space 22a communicate with each other. 3, when the first connector 10 and the second connector 20 are fastened, the engaging member 14 is inserted into the receiving space 22a through the opening 22b, (14a) of the locking member (14) is positioned on the conveyance path of the locking member (23).

3, the latching groove 22c is recessed and formed on the inner surface of the accommodating space 22a so as to face the opening 22b with the accommodating space 22a interposed therebetween. The end of the engaging member 14 inserted into the accommodating space 22a can be inserted into the engaging groove 22c. Such an engagement groove 22c can support the engagement member 14 and prevent the engagement member 14 from being detached from the predetermined position determined by the impact applied to the locking member 23 or from the outside, .

The locking member 23 has a bar shape having a predetermined length. As shown in Fig. 3, the locking member 23 may have a rack gear 23a formed on one surface thereof.

3, the conveying member 24 may have a pinion gear 24a to be engaged with the rack gear 23a and a driving motor 24b to rotate the pinion gear 24a. 3 and 4, such a conveying member 24 drives the drive motor 24b in the forward or reverse direction so that at least a part of the locking member 23 is engaged with the engaging member 14 The locking member 23 can be reciprocated along a predetermined conveying path so that the locking member 23 is inserted into the hole 14a or the locking member 23 is pulled out of the locking hole 14a and separated from the locking member 14. [

As described above, the fastening direction of the first connector 10 and the conveying direction of the locking member 23 are perpendicular to each other. 4, when the locking member 23 is inserted into the locking hole 14a, the locking member 23 is engaged with the inner side surface of the locking hole 14a, so that the first connector 10 And can be locked by the locking member 23 so as not to be detached from the second connector 20. When the locking member 23 is pulled out of the locking hole 14a, the locking of the locking member 23 with respect to the locking member 14 is released so that the first connector 10 is locked to the second connector 20, Lt; / RTI >

5 is a flowchart for explaining a method of using the high voltage connector shown in FIG.

Hereinafter, a method of using the high voltage connector 1 will be described with reference to the drawings.

First, when the power source IG for starting the engine is input (S 10), the controller 40 determines whether or not the first connector 10 is fastened to the predetermined position of the second connector 20 (S 20). For example, the controller 40 determines whether the first interlock terminal 32 and the second interlock terminal 34 are interconnected to each other to determine whether the interlock circuit 30 constitutes a closed circuit, 10 is fastened in the correct position of the second connector 20.

When it is determined that the interlock circuit 30 constitutes the open circuit, the controller 40 suspends the start of the engine for a certain period of time under the judgment that the first connector 10 is not engaged in the predetermined position of the second connector 20 (S30), it is determined whether the power source IG for starting the engine is still supplied (S40). The controller 40 judges whether or not the first connector 10 is fastened in the correct position of the second connector 20 when it is judged that the power supply IG for starting the engine is still supplied, It is determined that the start of the engine is stopped.

When the controller 40 determines that the first connector 10 is fastened to the second connector 20 at the predetermined position, the locking member 23 is transferred to the locking member 14, The conveying member 24 is driven so as to be inserted into the conveying member 14a (S50). That is, the controller 40 determines that the first connector 10 is positioned in the conveying path of the locking member 23 by fastening the second connector 20 in the correct position and the engaging hole 14a of the engaging member 14 If it is judged that the locking member 23 is inserted into the locking hole 14a, the conveying member 24 is driven. Then, the first connector 10 can be locked by the locking member 23 so as not to be separated from the second connector 20 during start-up and running of the vehicle.

The controller 40 determines that the locking member 23 is moved away from the engaging member 14 to stop the engagement of the engaging member 14 with the engaging member 14 when the first connector 10 is locked The conveying member 24 is driven so as to be drawn out from the engagement hole 14a (S70). That is, the controller 40 drives the conveying member 24 so that the locking member 23 is separated from the engaging member 14 when it is determined that the engine is stopped and the supply of the high-voltage power supply is stopped. Then, the first connector 10 can be unlocked to be detachable from the second connector 20. When the power supply to the connectors 10 and 20 is reduced to less than the regulatory limit of 60 V when the engine is judged to be stopped, the controller 40 determines that the first connector 10 is unlocked By driving the conveying member 24 as much as possible, it is possible to more effectively prevent the worker from being electrocuted.

The high voltage connector 1 is configured such that when the engaging member 14 and the locking member 23 are engaged with each other, the connectors 10 and 20 are connected to each other in a state where a high voltage power source is supplied, It is possible to prevent them from being separated from each other. Thus, the high voltage connector 1 can fundamentally prevent the worker from being electrocuted by separating the connectors 10 and 20 from each other in a state in which the high voltage power is supplied. In addition, since the high voltage connector 1 can prevent the worker from being electrocuted even if the relay for urgently cutting off the power supplied to the connectors 10 and 20 is removed, the installation cost is reduced by eliminating the expensive relay .

6 is a view showing a state in which the latching member of the first connector and the locking member of the second connector are separated from each other in the high voltage connector according to the second embodiment of the present invention, And the locking member of the second connector is engaged with the latching member of the connector.

The high voltage connector 2 according to the second embodiment of the present invention is provided with a housing 22, a locking member 23 and a transfer member (not shown) so as to change the engaging manner of the engaging member 14 and the locking member 23. [ 24 in that the structure of the high voltage connector 1 is changed. Hereinafter, the high voltage connector 2 will be described mainly on the basis of these differences. In addition, the same configuration in which the high voltage connectors 1 and 2 are commonly included will be described using the same reference numerals.

6, the housing 22 includes a housing space 22d in which the locking member 23 is received to reciprocate along a predetermined conveying path, and a holding hole 14a of the engaging member 14 An opening 22b formed so as to be able to insert at least a part of the engaging member 14 into the accommodating space 22d so as to be positioned on the conveying path of the locking member 23 and an engaging member 14 And a latching groove 22c for fixing the latch portion 22a to a predetermined position.

As shown in Fig. 6, the locking member 23 has a bar shape having a predetermined length. At least a part of the locking member 23 is formed of a magnetic material so that it can be moved by a magnetic force. For example, the locking member 23 may be made of a metal material having magnetism.

The transfer member 24 is provided with an electromagnet 24c capable of transferring the locking member 23 to the engaging hole 14a side by magnetic force so that at least a part of the locking member 23 is inserted into the engaging hole 14a of the engaging member 14 And a return spring 24d provided so as to be elastically biased in a direction in which the locking member 23 is spaced apart from the engagement hole 14a.

The electromagnet 24c includes a magnetic block 24e disposed so as to face the locking member 23 with a retaining hole 14a of the retaining member 14 inserted in the receiving space 22d through the opening 22b, And a coil 24f for selectively magnetizing the magnetic body block 24e using a current supplied from the outside.

6, the magnetic body block 24e is disposed opposite to the locking member 23 with respect to the locking hole 14a of the locking member 14 inserted into the accommodation space 22d through the opening 22b As shown in Fig. The magnetic body block 24e may be constituted by a magnetic body at least partially so as to be magnetized by the coil 24f. For example, the magnetic body block 24e may be made of a magnetic metal material.

As shown in Fig. 6, the coil 24f is wound around the magnetic substance block 24e so as to surround the magnetic substance block 24e, and is connected to an external electric power source. The coil 24f can magnetize the magnetic block 24e using a current supplied from an external electric source. 7, the locking member 23 is transferred to the magnetic block 24e by the magnetic force of the magnetized magnetic block 24e and inserted into the locking hole 14a of the locking member 14 , The first connector 10 can be locked.

The return spring 24d is provided so as to provide an elastic force for urging the locking member 23 in a direction away from the engaging member 14. [ For example, as shown in Fig. 6, the return spring 24d may be a coil spring provided so as to surround the outer peripheral surface of the locking member 23. 6, the housing 22 may further have a stopper 22e protruding from the inner surface of the receiving space 22d to support one end of the return spring 24d, The member 23 may have a flange 23b formed at one end thereof to support the other end of the coil 24f.

7, when the locking member 23 is moved toward the engaging member 14 by the magnetic force of the electromagnet 24c, the return spring 24d is brought into contact with the flange 23b of the locking member 23 Lt; / RTI > 6, when the magnetic force of the electromagnet 24c is cut off, the return spring 24d is extended and can press the locking member 23 in a direction away from the engaging member 14 . Then, the locking member 23 is moved in the direction away from the locking member 14 by the return spring 24d and is pulled out from the locking hole 14a of the locking member 14, thereby moving the first connector 10 It can be unlocked.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: High voltage connector
10: first connector
12: Terminal
14:
14a:
16: Wiring
18: first coupling member
20: second connector
21: Connection terminal
22: Housing
22a: accommodation space
22b: opening
22c:
22d: accommodation space
22e: Stopper
23: Locking member
23a: Racks
23b: Flange
24:
24a: Pinion gear
24b: drive motor
24c: Electromagnet
24d: return spring
24e: magnetic block
24f: coil
25: Wiring
26: second coupling member
30: Interlock circuit
32: First interlock terminal
34: second interlock terminal
36: Inter power source
40:

Claims (14)

A first connector having an engaging member provided on one side; And
And a transfer member capable of reciprocatingly transferring the locking member along a predetermined transfer path so that the locking member is engaged with the engaging member or separated from the engaging member, A second connector formed to be capable of fastening one connector; And
And a controller for controlling the conveying member so that the locking member is engaged with the engaging member when the predetermined locking condition is satisfied. The method according to claim 1,
Wherein the controller drives the conveying member so that the locking member engages with the engaging member when the first connector is fastened to the predetermined position of the second connector. 3. The method of claim 2,
Further comprising an interlock circuit configured to be able to constitute a closed circuit when the first connector is fastened to the second position of the second connector,
Wherein the controller determines that the first connector is fastened to the second position of the second connector when the closed circuit is constructed. The method of claim 3,
The interlock circuit includes a first interlock terminal mounted on the first connector and a second interlock terminal mounted on the second connector,
Characterized in that the first interlock terminal and the second interlock terminal are provided so as to be selectively connectable to each other when the first connector is fastened to the second position of the second connector connector. The method according to claim 1,
Wherein the latching member has a latching hole formed to allow insertion of the locking member. 6. The method of claim 5,
The second connector may further include a housing provided at one side thereof,
The housing has an accommodating space in which the locking member is accommodated so as to be reciprocally movable along the conveying path and an opening portion in which at least a part of the engaging member is insertable so that the engaging hole is located on the conveying path Features high voltage connector. The method according to claim 6,
Wherein the controller drives the conveying member such that the locking member is inserted into the retaining hole when the retaining hole is located on the conveying path. The method according to claim 6,
Wherein the opening is such that when the first connector is fastened at a predetermined position of the second connector, the at least a part of the fastening member is inserted into the accommodating space through the opening so that the fastening hole is located on the conveying path Wherein the first and second connectors are formed on the same surface. 6. The method of claim 5,
Wherein the locking member has a rack gear formed on one surface thereof,
Wherein the conveying member has a pinion gear engaged with the rack gear and a drive motor for rotationally driving the pinion gear. 6. The method of claim 5,
Wherein the locking member comprises at least a part of a magnetic body,
Wherein the conveying member has an electromagnet capable of conveying the locking member toward the engaging hole by using a magnetic force so that at least a part of the locking member is inserted into the engaging hole. 11. The method of claim 10,
Wherein the electromagnet has a magnetic block arranged to face the locking member and a coil for selectively magnetizing the magnetic block by using a current supplied from the outside. 11. The method of claim 10,
Wherein the conveying member further has a return spring that is elastically biased so that the locking member is spaced apart from the latching hole. 13. The method of claim 12,
The housing further includes a stopper formed to support one end of the return spring,
Wherein the locking member has a flange formed to support the other end of the return spring. The method according to claim 1,
Wherein the locking member is provided so that the fastening direction of the first connector and the conveying direction of the locking member are offset from each other by a predetermined angle.

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