WO2010150975A1 - Electrical coupling apparatus - Google Patents

Electrical coupling apparatus Download PDF

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Publication number
WO2010150975A1
WO2010150975A1 PCT/KR2010/002859 KR2010002859W WO2010150975A1 WO 2010150975 A1 WO2010150975 A1 WO 2010150975A1 KR 2010002859 W KR2010002859 W KR 2010002859W WO 2010150975 A1 WO2010150975 A1 WO 2010150975A1
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WO
WIPO (PCT)
Prior art keywords
housing
coupling
locking
male
female
Prior art date
Application number
PCT/KR2010/002859
Other languages
French (fr)
Inventor
Kyu-Yeon Yeon
Sei-Hoon Cho
Phil-Sung Lee
Original Assignee
Ls Cable Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020090056431A priority Critical patent/KR101632715B1/en
Priority to KR10-2009-0056431 priority
Application filed by Ls Cable Ltd. filed Critical Ls Cable Ltd.
Publication of WO2010150975A1 publication Critical patent/WO2010150975A1/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/707Structural association with built-in electrical component with built-in switch interlocked with contact members or counterpart
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/62933Comprising exclusively pivoting lever
    • H01R13/62938Pivoting lever comprising own camming means
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/62933Comprising exclusively pivoting lever
    • H01R13/62955Pivoting lever comprising supplementary/additional locking means
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64Means for preventing incorrect coupling
    • H01R13/641Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement

Abstract

Disclosed is an electrical coupling apparatus that enables passing or blocking of electric current depending on the contact state of terminals to prevent electric arcs, thereby preventing damage of the terminals and safety accidents.

Description

ELECTRICAL COUPLING APPARATUS

The present invention relates to an electrical coupling apparatus, and more particularly, to an electrical coupling apparatus that enables passing or blocking of electric current depending on the contact state of terminals to prevent electric arcs, thereby preventing damage of the terminals and safety accident.

<Cross-Reference to Related Application>

This application claims priority to Korean Patent Application No. 10-2009-0056431 filed in Republic of Korea on June 24, 2009, the entire contents of which are incorporated herein by reference.

With a recent increase in equipments using a large quantity of electrical energy, for example hybrid vehicles, electric vehicles and so on, there is a demand for a high capacity electrical coupling apparatus. The high capacity electrical coupling apparatus transmits a considerable amount of electric power. For this reason, contact between terminals may be cut off, or if the electric current flows before terminals are contacted with each other, electric arcs may occur, resulting in fires or damage of the terminals.

In particular, in case of an electrical coupling apparatus used for vehicles, terminals may be separated from each other or contact between the terminals may be instantaneously cut off due to oscillation during driving. For repair and maintenance of electric parts of vehicles such as replacement, it requires detachment of the electrical coupling apparatus. In this case, electric arcs may occur between the terminals, thereby causing the above-mentioned problems.

To improve coupling stability between terminals, a high capacity electrical coupling apparatus may be provided with a structure to improve coupling between the terminals or prevent separation of the terminals, or an interlock switch. When a male housing and a female housing are assembled and large current terminals are contacted with each other, the interlock enables the electric current to flow into the large current terminals. And, the interlock switch blocks the flow of electric current into the large current terminals prior to disassembly of the male housing and the female housing. Thereby electric arcs are prevented. Under this circumstance, there is a need to develop an electrical coupling apparatus that is easier to use and has better stability than conventional high capacity electrical coupling apparatus.

The present invention is designed to solve the problems, and therefore it is an object of the present invention to provide an electrical coupling apparatus which is provided with a structure to facilitate coupling between terminals and prevent feeble separation of the terminals and which enables passing or blocking of electric current depending on the contact state of terminals to prevent electric arcs, thereby preventing damage of the terminals and safety accidents.

To achieve the object, the electrical coupling apparatus according to the present invention comprises a first housing having a first terminal; a second housing assembled with the first housing and having a second terminal electrically connected with the first terminal; a coupling support member rotatably installed to the first housing or the second housing for enabling assembly or disassembly of the first housing and the second housing by its rotation; a locking member installed to the first housing or the second housing for selectively tightening the first and second housing assembly formed by the coupling support member; and a false coupling prevention means for enabling coupling of the locking member to the first and second housing assembly only on condition that the first housing and the second housing are assembled.

Preferably, the false coupling prevention means comprises a fitting part formed at the locking member; a coupling part formed at the first housing or the second housing; and a guide part engaged with the coupling part for guiding the fitting part in assembly of the first housing and the second housing.

Preferably, the locking member is slidingly movable to the first housing or the second housing. The fitting part is formed on an inner surface of the locking member in the shape of a protrusion that comes in contact with the guide part as the locking member slidingly moves, at which time the locking member is elastically widened outwardly. The coupling part is formed in the shape of a protrusion at the first housing or the second housing, and the guide part is also formed in the shape of a protrusion at the first housing or the second housing where the coupling part is not formed. The coupling part and the guide part have flat contact surfaces facing each other and slope surfaces opposite to the contact surfaces.

Preferably, the electrical coupling apparatus further comprises an interlock switch of an interlock circuit for sensing whether or not the first terminal is connected to the second terminal, and the interlock switch is provided at the locking member and turned on when the locking member tightens the first and second housing assembly.

The accompanying drawings illustrate the preferred embodiments of the present invention and are included to provide a further understanding of the spirit of the present invention together with the detailed description of the invention, and accordingly, the present invention should not be limitedly interpreted to the matters shown in the drawings.

FIG. 1 is an exploded perspective view of an electrical coupling apparatus according to a preferred embodiment of the present invention.

FIG. 2 is an assembled perspective view of FIG. 1.

FIG. 3 is a perspective view of a male housing and a coupling support member of the electrical coupling apparatus according to a preferred embodiment of the present invention.

FIG. 4 is a perspective view of a female housing of the electrical coupling apparatus according to a preferred embodiment of the present invention.

FIG. 5 is a perspective view of a locking member of the electrical coupling apparatus according to a preferred embodiment of the present invention.

FIG. 6 is a view illustrating the operation of a false coupling prevention means of the electrical coupling apparatus according to a preferred embodiment of the present invention.

FIGs. 7 to 9 are views illustrating an assembly process of the electrical coupling apparatus according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to the description, it should be understood that the terms used in the specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Therefore, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.

FIG. 1 is an exploded perspective view of an electrical coupling apparatus according to a preferred embodiment of the present invention. FIG. 2 is an assembled perspective view of FIG. 1.

The present invention is characterized in that the electric current is allowed to pass or is blocked depending on whether or not a first terminal (not shown) of a first housing 110 is contacted with a second terminal (not shown) of a second housing 130, and when the first and second housings 110 and 130 are assembled, a locking member 140 is coupled to the first and second housing assembly to tighten the assembly, and in this state, an interlock switch is turned on, thereby preventing electric arcs.

Referring to FIGs. 1 and 2, the electrical coupling apparatus 100 comprises a first housing 110 having a first terminal (not shown), a second housing 130 having a second terminal (not shown), a coupling support member 120 rotatably installed at the first housing 110 or the second housing 130, a locking member 140 installed to the first housing 110 or the second housing 130, and a false coupling prevention means for enabling coupling of the locking member 140 to the first and second housing assembly only on condition that the first housing 110 and the second housing 130 are assembled.

Hereinafter, the first housing 110 and the second housing 130 are referred to as a male housing and a female housing, respectively. Similarly, the first terminal and the second terminal are referred to as a male terminal and a female terminal, respectively. At this time, the first housing 110 and the second housing 130 are named a male housing and a female housing in an arbitrary manner, respectively. The first housing 110 and the second housing 130 may be referred to as a female housing and a male housing, respectively.

The male housing 110 has a power circuit therein. The coupling support member 120 is rotatably installed at the male housing 110.

Here, the power circuit includes a conductive wire and so on, through which electric current flows. Basically, the power circuit is in a non-conducting state. The power circuit is simply a circuit through which a power source flows when it is in a conducting state, wherein the power source is supplied from a power supply, such as a battery, to a load. This power circuit is a well-known technique in the art, and its detailed description is omitted herein.

The male housing 110 has a cam axis 111 at each opposing side thereof. The coupling support member 120 is rotatably installed with regard to the cam axis 111. The male terminal is installed in a terminal receiving part 112 formed at the lower portion of the male housing 110, and connected to the female terminal of the female housing 130. That is, when the male housing 110 is assembled with the female housing 130, the disconnected power circuit becomes a conducting state. However, even though the male housing 110 and the female housing 130 are assembled, if the interlock switch is not turned on, the electric current is not allowed to pass through the power circuit.

Meanwhile, the male housing 110 has a guide part 116. The guide part 116 guides the locking member 140 to make a slidingly coupling of the locking member 140 to the male and female housing assembly. The guide part 116 is formed in the shape of a protrusion protruding outwards at each opposing side of the male housing 110. Preferably, the guide part 116 has a slope surface 116b at one side that is inclined and a contact surface 116a at the other side that is contacted with a coupling part 133 to be described below. The guide part 116 is one component of the false coupling prevention means, and will be specified when describing the operation of the electrical coupling apparatus 100 below.

The coupling support member 120 is rotatably installed at the male housing 110 or the female housing 130. For example, the coupling support member 120 is preferably installed at the male housing 110, as shown in FIG. 3. Particularly, the coupling support member 120 is rotatably installed with regard to the cam axis 111. The coupling support member 120 draws the male housing 110 by its rotation so that the male housing 110 and the female housing 130 are assembled or disassembled. The coupling support member 120 is a typical lever.

Although the coupling support member 120 is rotatably installed at the male housing 110, the present invention is not limited in this regard. The coupling support member 120 may be rotatably installed at the female housing 130 to induce assembly and disassembly of the male housing 110 and the female housing 130.

The coupling support member 120 facilitates assembly of the male housing 110 and the female housing 130. That is, it is impossible to assemble the male housing 110 and the female housing 130 without the coupling support member 120. The coupling support member 120 has a guide groove 121, into which a fixing axis 131 of the female housing 130 is inserted. This configuration enables rotation of the coupling support member 120 and facilitates a drawing operation of the coupling support member 120 accordingly. As the coupling support member 120 rotates, the fixing axis 131 is guided along the lengthwise direction of the guide groove 121, so that the coupling support member 120 is supported by the fixing axis 131. If the coupling support member 120 is pulled downwards, the male housing 110 and the female housing 130 are assembled and the power circuit is ready to pass electric current. If the coupling support member 120 is pulled upwards, the male housing 110 and the female housing 130 are disassembled.

The guide groove 121 is formed at each opposing side of the coupling support member 120, and has a crooked shape of a predetermined length from one open end of the coupling support member 120. The guide groove 121 has an open end 121a through which the fixing axis 131 is inserted, and a closed end 121b connected to the open end 121a and formed at the other end of the guide groove 121. That is, the fixing axis 131 is inserted through the open end 121a and moved along the guide groove 121, and as the coupling support member 120 rotates, the fixing axis 131 is guided to the closed end 121b. When the fixing axis 131 reaches the closed end 121b, assembly of the male housing 110 and the female housing 130 is completed.

And, the coupling support member 120 has an engaging part 123 for preventing rotation of the coupling support member 120 caused by the locking member 140 when the locking member 140 is slidingly coupled to the male and female housing assembly. The engaging part 123 is formed corresponding in shape to a fitting part (143 of FIG. 5) of the locking member 140. And, the engaging part 123 is formed at a location corresponding to a location where the fitting part 143 will be when the locking member 140 is coupled to the male and female housing assembly. For example, the fitting part 143 and the engaging part 123 may be configured as a protrusive axis and an axis groove, respectively. That is, the fitting part 143 may be configured as a protrusive axis, and the engaging part 123 may be configured as an axis groove corresponding to the protrusive axis in shape so that the protrusive axis can be inserted into the axis groove.

As shown in FIG. 4, the female housing 130 has an open top through which the male housing 110 can be inserted, and a female terminal (not shown) therein that is contacted with the male terminal. And, the female housing 130 has a female connector 135 installed on an outer side thereof, a coupling part 133 for preventing coupling of the locking member 140 to the male and female housing assembly on condition that the male housing 110 is not assembled with the female housing 130, and a support member 137 for supporting the locking member 140.

In addition, the female connector 135 has a first connection sensing terminal (not shown). The first connection sensing terminal is connected to a second connection sensing terminal (not shown) of a male connector 145. The female connector 135 and the male connector 145 form an interlock switch for sensing connection of the male terminal and the female terminal. That is, the interlock switch constitutes an interlock circuit, and as the interlock switch is turned on/off, a relay circuit is turned on/off, and the power circuit becomes a conducting/non-conducting state accordingly.

Although this embodiment shows that the female connector 135 having the first connection sensing terminal and the male connector 145 having the second connection sensing terminal are separated in the interlock switch and can be connected to each other, the female connector 135 of the female housing 130 and the male connector 145 of the locking member 140 may be installed together if any one of the first and second connection sensing terminals can move toward the other to come in contact with the other. In this case, the interlock switch is preferably installed at the locking member 140. Alternatively, the first and second connection sensing terminals are installed in the interlock switch together and the interlock switch is provided in the female housing 130. In this case, the coupling support member 120 is preferably configured to be slidingly movable with regard to the first housing 110 or the second housing 120 after rotating to enable passing of electric current.

The coupling part 133 prevents the interlock switch from being turned on under condition that the power circuit does not become a conducting state by the male terminal and the female terminal. That is, when the male housing 110 is not assembled with the female housing 130, the coupling part 133 prevents the locking member 140 from coupling to the male and female housing assembly. The coupling part 133 is formed in the shape of a protrusion at each opposing side of the female housing 130, and preferably has a slope surface 133b at one side that is inclined and a contact surface 133a at the other side that is contacted with the guide part 116. The coupling part 133 is configured symmetrically with the guide part 116. When the male housing 110 is assembled with the female housing 130, one side of the coupling part 133 is in closely contact with the other side of the guide part 116. The coupling part 116 is one of the false coupling prevention means and its detailed description is made when specifying the operation of the electrical coupling apparatus below.

The support member 137 includes a first support protrusion 137a and a second support protrusion 137b.

The first support protrusion 137a has a bar shape, and is inserted into and slides through a first support groove 147a of the locking member 140.

The second support protrusion 137b has a curved outer periphery, and is fittingly inserted into and slides through a second support groove 147b of the locking member 140. The second support protrusion 137b is configured to slide under a predetermined pressure to prevent a loose separation of the locking member 140 from the female housing 130.

When the locking member 140 is coupled to the female housing 130, the support member 137 induces a stable connection of the male connector 145 to the female connector 135 and prevents the locking member 140 from moving in a vertical direction, thereby preventing the coupling support member 120 from rotating in such a direction that engagement between the engaging part 123 of the coupling support member 120 and the fitting part 143 of the locking member 140 is released.

As shown in FIG. 5, the locking member 140 has the male connector 145, the fitting part 143 and the support groove 147, respectively, corresponding to the female connector 135, the coupling part 133 and the support member 137 of the female housing 130. The fitting part 143, the male connector 145 and the support groove 147 of the locking member 140 are described above, and their detailed description is omitted.

Meanwhile, when the power circuit of the male housing 110 and the female housing 130 is not in a conducting state, the false coupling prevention means of the electrical coupling apparatus 100 prevents the male connector 145 and the female connector 135 from connecting to each other, and when the power circuit is in a conducting state, the false coupling prevention means enables the male connector 145 and the female connector 135 to connect to each other and the interlock switch to be turned on.

As mentioned above, the false coupling prevention means comprises the fitting part 143, the coupling part 133 and the guide part 116.

The fitting part 143 is formed on the inner surface of the locking member 140 in the shape of a protrusion that gets in contact with the guide part 116 as the locking member 140 slidingly moves, at which time the locking member 140 is elastically widened outwardly.

The coupling part 133 and the guide part 116 are formed in the shape of protrusions having slope surfaces 133b and 116b at one side, respectively, with the slope surfaces 116b and 133b facing away from each other. The coupling part 133 is formed at the female housing 130, and the guide part 116 is formed at the male housing 110. When the male housing 110 is assembled with the female housing 130, the coupling part 133 is contacted with the guide part 116.

The false coupling prevention means enables coupling of the locking member 140 to the male and female housing assembly to tighten the assembly, only on condition that the male housing 110 is assembled with the female housing 130. That is, if the male housing 110 is not assembled with the female housing 130, the locking member 140 cannot be coupled to the assembly. For example, as shown in FIG. 6(a), if the male housing 110 is not assembled with the female housing 130, the fitting part 143 of the locking member 140 is stopped by the contact surface 133a of the coupling part 133 of the female housing 130, so that the movement of the locking member 140 is limited. Under this circumstance, the terminals of the male housing 110 and the female housing 130 can not come in contact with each other, and coupling of the locking member 140 having the interlock circuit will be prevented. Accordingly, when the male terminal is not contacted with the female terminal and the power circuit does not become a conducting state, there is no possibility that the interlock switch will be turned on.

Meanwhile, after the male housing 110 is assembled with the female housing 130 by a drawing operation of the coupling support member 120, the fitting part 143 is slidingly moved to the guide part 116 as shown in FIG. 6(b). Next, as shown in FIG. 6(c), the fitting part 143 comes in contact with the guide part 116. Subsequently, the fitting part 143 will slide along the slope surface 116b of the guide part 116, pass by the coupling part 133 and be engaged with the engaging part 123 of the coupling support member 120.

As shown in FIG. 6(b), the slope surfaces 133b and 116b are located at the opposite side of the corresponding contact surfaces 133a and 116a, respectively. Due to this configuration, the male housing 110 is stably assembled with the female housing 130, and consequently the power circuit can become a conducting state. Subsequently, the fitting part 143 of the locking member 140 can tighten the male and female housing assembly with assistance of the guide part 116.

Referring to FIG. 6(c), when the fitting part 143 is contacted with the guide part 116, the locking member 140 having the fitting part 143 formed on the inner surface thereof is elastically widened outwardly to allow easy coupling of the locking member 140.

As shown in FIG. 6(d), the fitting part 143 of the locking member 140 passes along the guide part 116 and the coupling part 133 and is then engaged with the engaging part 123 of the coupling support member 120 (See FIG. 9). Thereby the power circuit becomes a conducting state to enable passing of electric current, and subsequently, the interlock switch can be turned on to flow the electric current.

Meanwhile, the slope surface 133b of the coupling part 133 is configured to enable the fitting part 143 to slidingly move for the purpose of easy separation of the locking member 140.

As mentioned above, when the power circuit is in a conducting state to enable passing of electric current, the interlock switch can be turned on, and when the power circuit is in a non-conducting state, the interlock switch is not turned on, so that the likelihood of electric arcs is reduced. As a result, it prevents damage of terminals and peripheral components and safety accidents such as electric shock of users.

Meanwhile, the reference numeral 10 is a pair of lead lines connected to the female terminal. Each of the lead lines is electrically connected to a load and a power supply of the power circuit.

Furthermore, a main switch formed by contact of the male terminal and the female terminal and a relay circuit are connected in series to the load and the power supply supplying a power source to the load, and the relay circuit is turned on/off depending on on/off of the interlock switch. That is, the relay circuit is turned on when the interlock switch having the first connection sensing terminal and the second connection sensing terminal is turned on, and is turned off when the interlock switch is turned off. The main switch formed by the male terminal and the female terminal is a switch by mechanical coupling.

Hereinafter, an assembly process of the electrical coupling apparatus for preventing an improper connection of terminals and reducing electric arcs is described with reference to FIGs. 7 to 9.

First, as shown in FIG. 1, provided are the male housing 110 having the cam axis 111, the coupling support member 120 rotatably installed with regard to the cam axis 111, the female housing 130 into which the male housing 110 is inserted, and the locking member 140 coupled to the male and female housing assembly. At this time, the coupling part 133 of the female housing 130 limits the movement of the locking member 140 to prevent coupling of the locking member 140 to the male and female housing assembly when the male housing 110 is not assembled with the female housing 130.

Subsequently, as shown in FIG. 7, the male housing 110 is inserted into the female housing 130 and the coupling support member 120 is pulled down. Specifically describing, the fixing axis 131 of the female housing 130 is inserted through the open end 121a of the guide groove 121 of the coupling support member 120 and guided along the guide groove 121. Thus, the male housing 110 is inserted into the female housing 130. In this state, the power circuit is not yet connected to enable passing of electric current.

Next, as shown in FIGs. 2 and 8, as the coupling support member 120 is rotated downwards, the fixing axis 131 reaches the closed end 121b of the guide groove 121, so that the coupling support member 120 is secured by the fixing axis 131. Accordingly, the male housing 110 is stably and firmly assembled with the female housing 130. At this time, the guide part 116 of the male housing 120 is contacted with the coupling part 133 of the female housing 130 as shown in FIG. 6(b). When the male housing 110 is assembled with the female housing 130 by the coupling support member 120, the power circuit is connected to enable passing of electric current, and the locking member 140 can be coupled to the assembly.

Finally, as shown in FIG. 9, the locking member 140 slidingly moves to and is coupled to the male and female housing assembly to tighten the assembly. During this process, the fitting part 143 of the locking member 140 slides along the slope surface 116b of the guide part 116 as shown in FIG. 6(c). As the support member 137 of the female housing 130 is inserted into the support groove 147, the locking member 140 is guided and secured by the support member 137 to accomplish a stable and secure coupling of the locking member 140 to the male and female housing assembly. When the locking member 140 is coupled to the male and female housing assembly, the interlock switch is turned on and then the relay circuit is connected, so that the power circuit becomes a conducting state by the male and female terminals to enable passing of electric current.

When the locking member 140 is coupled to the male and female housing assembly, the fitting part 143 is meshed with the engaging part 123 of the coupling support member 120. The fitting part 143 prevents the coupling support member 120 from moving in a direction that the male and female housings 110 and 130 are disassembled from each other. Thus, the assembled state of the male and female housings 110 and 130 is stably maintained, and it is impossible to forcibly disassemble the male housing 110 from the female housing 130.

If the male housing 110 is not inserted into the female housing 130, or if the male and female housings 110 and 130 are not in such assembled state as to enable passing of electric current even though the male housing 110 was inserted into the female housing 130, the fitting part 143 of the locking member 140 is stopped by the coupling part 133 of the female housing 130 to prevent the interlock switch from being turned on. That is, it prevents the male connector 145 and the female connector 135 from connecting to each other. Thus, if a stable contact is not made between the male terminal and the female terminal, it is impossible to connect the male connector 145 to the female connector 135 and enable passing of electric current, thereby preventing electric arcs and safety accidents.

Meanwhile, for disassembly of the electrical coupling apparatus 100, the above process is performed in the reverse order. That is, the interlock switch is turned off to enable blocking of electric current, and then the male and female terminals are separated from each other.

As the locking member 140 is slidingly separated, the interlock switch is turned off and the relay circuit is then disconnected. Thereby the power circuit becomes a non-conducting state. In this state, as a predetermined time lapses, the male terminal and the female terminal are discharged. It is possible to delay separating the male terminal from the female terminal by controlling the rotation of the coupling support member 120. That is, a time lapse occurs starting from disconnection of the power circuit to turn-off of the main switch. Before the male terminal is separated from the female terminal, the time to discharge the male and female terminals is guaranteed, thereby preventing electric arcs from occurring.

Hereinabove, the present invention is described in detail with reference to the specific examples and the accompanying drawings. However, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.

The electrical coupling apparatus according to the present invention enables passing or blocking of electric current depending on the contact state of terminals, thereby preventing electric arcs from occurring. That is, the present invention is configured in such a way that an interlock switch can be turned on only when a power circuit becomes a conducting state by contact of the terminals, thereby preventing electric arcs.

And, in conditions that the power circuit is in a non-conducting state, the time to separate the terminals is delayed, so that a discharge time for completely shutting down the terminals is guaranteed, thereby preventing electric arcs, resulting in safety accidents prevention.

Furthermore, prevention of electric arcs allows prevention of damage to the terminals and peripheral components, thereby reducing the replacement cost of products.

Claims (4)

  1. An electrical coupling apparatus, comprising:
    a first housing having a first terminal;
    a second housing assembled with the first housing and having a second terminal electrically connected with the first terminal;
    a coupling support member rotatably installed to the first housing or the second housing for enabling assembly or disassembly of the first housing and the second housing by its rotation;
    a locking member installed to the first housing or the second housing for selectively tightening the first and second housing assembly formed by the coupling support member; and
    a false coupling prevention means for enabling coupling of the locking member to the first and second housing assembly only on condition that the first housing and the second housing are assembled.
  2. The electrical coupling apparatus according to claim 1,
    wherein the false coupling prevention means comprises:
    a fitting part formed at the locking member;
    a coupling part formed at the first housing or the second housing; and
    a guide part engaged with the coupling part for guiding the fitting part in assembly of the first housing and the second housing.
  3. The electrical coupling apparatus according to claim 2,
    wherein the locking member is slidingly movable to the first housing or the second housing,
    wherein the fitting part is formed on an inner surface of the locking member in the shape of a protrusion that comes in contact with the guide part as the locking member slidingly moves, at which time the locking member is elastically widened outwardly,
    wherein the coupling part is formed in the shape of a protrusion at the first or second housing and the guide part is formed in the shape of a protrusion at the first or second housing where the coupling part is not formed, and
    wherein the coupling part and the guide part have flat contact surfaces facing each other and slope surfaces opposite to the contact surfaces.
  4. The electrical coupling apparatus according to any one of claims 1 to 3, further comprising:
    an interlock switch of an interlock circuit for sensing whether or not the first terminal is connected with the second terminal,
    wherein the interlock switch is provided in the locking member and turned on when the locking member tightens the first and second housing assembly.
PCT/KR2010/002859 2009-06-24 2010-05-06 Electrical coupling apparatus WO2010150975A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020090056431A KR101632715B1 (en) 2009-06-24 2009-06-24 Apparatus for coupling electrical
KR10-2009-0056431 2009-06-24

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WO2010150975A1 true WO2010150975A1 (en) 2010-12-29

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WO (1) WO2010150975A1 (en)

Cited By (4)

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CN103326181A (en) * 2012-03-20 2013-09-25 光宝电子(广州)有限公司 Pluggable device
JP2014146451A (en) * 2013-01-28 2014-08-14 Yazaki Corp Power supply breaker
CN106256051A (en) * 2014-04-14 2016-12-21 Ls电线有限公司 Safeguard plug-in unit, unit and power cut system used for electric vehicle
EP3591769A1 (en) * 2018-07-02 2020-01-08 Yazaki Corporation Connector device

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JP2014146451A (en) * 2013-01-28 2014-08-14 Yazaki Corp Power supply breaker
CN106256051A (en) * 2014-04-14 2016-12-21 Ls电线有限公司 Safeguard plug-in unit, unit and power cut system used for electric vehicle
EP3591769A1 (en) * 2018-07-02 2020-01-08 Yazaki Corporation Connector device

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