JP2002225705A - Electric coupler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide more complete waterproofing and dustproofing for an electric coupler in such a condition that a vehicle is open and the coupler is covered with a lid. SOLUTION: A rubber sheet 212 is affixed onto both sides of the coupler under its front opening surface and a lower portion with which the lid 22 comes into contact. A portion with which the back of the lid 22 comes into contact is made flat. A covering plate 225 for covering a clearance between a box body 21 and the portion is mounted to the side plate 224 of the lid 22, a flash board to the backside of the tip of the lid and a drain board to the bottom thereof, to prevent water to penetrate inside the lid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric coupler used for one-touch connection and disconnection of an electric circuit in an electric vehicle such as a railway vehicle, an industrial machine such as an overhead crane, and the like.

[0002]

2. Description of the Related Art In electric vehicles such as railway vehicles, industrial machines such as overhead cranes, etc., one-touch type electric couplers are used in portions where circuits are to be connected and disconnected efficiently. As an example, an example of an electric coupler attached to a mechanical coupler for automatically connecting and releasing a vehicle such as a train by remote control from a driver's cab will be described with reference to the drawings.

[0003] An electric train formed by connecting a plurality of vehicles,
In diesel trains, etc., power, control,
Various electric wires for direct current, alternating current, high voltage, and low voltage for signals and the like are passed through, but these must be connected and disconnected simultaneously with connection and release of the vehicle itself. Conventionally, these wires were manually connected and disconnected together with air pipes by workers, but to improve safety and reduce work time, electric couplers were added to mechanical couplers to connect vehicles. It is common practice to be able to connect and disconnect electrical wiring simultaneously with disconnection.

As an example, FIG. 6 is a front view showing a state in which an electric coupler is attached to a mechanical coupler described in Japanese Utility Model Publication No. 7-30449, FIG. 7 is a side view thereof, and 1 is a contact type. 2 is an electric coupler, 2 is an electric coupler, 21 is its box body, 22 is a cover for covering the main part of the electric coupler front, 221 is a lid spring for urging the lid 22 in the closing direction, and 222 is a rotary support for the lid 22 Support shaft,
223 is a cam roller pressed by a cam attached to the push rod 23 to open and close the lid 22, 231 is a return spring of the push rod 23, 24 is a backing plate pressed against the push rod of the opponent vehicle, and 3 is an electric circuit contact. Piece 5 is a cable connected to this.

This electric coupler accommodates an insulating table in which a plurality of contact pieces 3 are arranged in an opening on the front surface of a box 21 and retreats to an upper rear portion inside the box when connected, and supports in a horizontal direction when not connected. It has a cylindrical lid that pivots down about an axis to close the opening. When the mechanical coupler 1 is not connected, the opening on the front face of the electrical coupler 2 is covered with a lid 22 to protect the tip of the contact piece 3 from getting wet with water and dust from adhering. When the vehicles approach the distance immediately before the connection, the push rods 23 of the vehicles on both sides come into contact with the abutment plate 24 of the opponent vehicle and are pushed. As a result, the tip of the contact piece 3 existing inside the lid 22 is exposed, and the contact pieces 3 of the vehicles on both sides come into contact with each other while the mechanical coupler 1 is connected, so that an electric circuit is connected. ing. Since the number of wirings passed between the vehicles ranges from a few to more than two hundreds, a myriad of contact pieces 3 are arranged inside and outside the electrical coupler 2 at predetermined intervals vertically and horizontally. .

FIG. 8 is a cross-sectional view showing the inside of an electric coupler similar to that shown in FIG. 7 but slightly different from the one shown in FIG. Gasket for waterproof mounted on the box, 25 and 26 are box 21
Front and rear two stages provided inside (in this specification, the side connected to the opponent vehicle of the electric coupler is referred to as front, and the body side is referred to as rear)
Reference numeral 4 denotes a body wiring connected to each contact piece 3. Incidentally, the position indicated by AA is the connection surface.

The electric coupler 2 is integrally connected to the mechanical coupler 1 by bolts or the like. If the mechanical coupler 1 is a close-coupled coupler in which no gap is formed in a connected state, the positional relationship between the electric couplers of both vehicles is provided. Also in the vertical and horizontal directions, and also in the vehicle interval direction, a predetermined error range can be established, so that the contact pieces of the same circuit are correctly joined. In addition to this, as described in Japanese Utility Model Publication No. Hei 8-6666, there is a type in which electric couplers are attached in two stages, upper and lower. This is because there is a tendency for the number of electrical circuits to pass through in vehicles manufactured in recent years to increase and the number of contact pieces is large, while there are also conventional vehicles in which the number of circuits remains small. This is considered because it is necessary to connect only the upper conventional circuit when connecting to a car, and to connect both upper and lower when connecting between new models.

[0008]

By the way, in the connected state, the lid is retracted to the upper rear part inside the box, and the gaskets of the electric couplers on both sides are pressed against each other to be waterproof,
No water penetrates into the contact piece. In the open state, the lid falls down and covers it, so it is temporarily waterproof.However, when traveling in heavy rain, especially when this coupler is at the top, the box and lid If rainwater infiltrates through the gap and remains open for a long period of time, dust that has invaded through the slight gap between the box and the lid accumulates around the contact piece, and water seeps into it and significantly reduces insulation resistance. There was a problem of lowering.

SUMMARY OF THE INVENTION It is an object of the present invention to solve this problem and to realize an electric coupler having a waterproof and dustproof structure in a released state.

[0010]

According to the present invention, an insulating table having a plurality of contact pieces disposed therein is accommodated in an opening on the front surface of a box body. An electrical coupling having a cylindrical front plate that pivots down about the support shaft and closes the opening, and a lid formed of a substantially fan-shaped side plate connecting both sides of the front plate and the support shaft. An elastic sheet is stuck to the lower sides of the front side of the opening surface and the lower part of the opening surface to which the pivoted-down lid hits, and the portion of the backside of the lid that hits this elastic sheet is machined to a flat surface, and the lid is An electric coupler characterized in that a closing member that closes a gap between a side plate and a box body that is present in a portion above the support shaft in a state of being rotated down is attached to the side plate, and more preferably a cylindrical front end. In the state of board drop A drain member extending forwardly to a bottom rear surface of the cylindrical front plate in a descending state, the plate being provided with a plate member for water return extending vertically downward on a top rear surface of the electric connector. It is the above-mentioned electric coupler to which a turn-back member is attached.

[0011]

According to the present invention, when the lid is closed, there is no gap in all contact portions between the lid and the box, so that waterproofness and dustproofness can be significantly improved. Was.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Figure 1
Is a front view showing the electric coupler of the embodiment, in which reference numerals are those used so far, and 212 is a rubber sheet. This figure shows a state in which the electric coupler is not connected, the lid 22 covers the front surface of the box 21, and covers the front surface of the contact piece 3.

FIG. 2 is a front view of the lid 22, FIG.
FIG. 4 is a partial cross-sectional view of the portion indicated by B in FIG. 3, and FIG.
It is a key map of the electric coupler main part which shows the moment when 22 is about to be closed. In these figures, reference numeral 220 denotes a front plate of the cylindrical lid 22, and 224 denotes both sides of the front plate 220 and a support shaft.
A substantially fan-shaped side plate for connecting to 222, and 225 is a side plate at a portion above the support shaft where the lid 22 is pivoted down.
A cover plate attached to the side plate 224 so as to close the gap between the 224 and the box 21. It is a draining board that is attached by folding back toward. In FIGS. 3 and 4, reference numeral 224a denotes a contact surface that comes into contact with the box 21 with the lid 22 closed. Usually, the box 21 is made of cast steel, and the lid 22 is made of, for example, a stainless steel plate.

As described above, the lid 22 is a box in the connected state.
It is retracted above 21 and released when it is released.
2 and descends to the front of the box 21. Since the front plate 220, which is a cylindrical surface, and the side plates 224, which are fan-shaped at both ends, are assembled by welding, there is no gap in the lid 22 itself,
As a gap for rainwater and dust to enter when 22 is closed,
Four positions between the boxes 21 corresponding to the top of the lid, the bottom of the lid, and both side surfaces of the lid are considered.

As shown in FIG. 5, among these, the support shaft 22
For the lower part, the opening of the box 21 in which the contact pieces 3 are arranged may be closed exactly, so that the edge of the lid 22 that is rotated down and the box 21 It is waterproofing and dustproofing to make them adhere to each other. On the other hand, the portion above the support shaft 222 is a gap between the cylindrical cover 22 and the space through which the cover can rotate, so that it does not hinder the rotation, and each gap is closed in the closed state. The cover member 225 may be attached to a predetermined position of the lid 22.

At the top of the lid, a water return 227 is attached vertically downward from the back so that water droplets that have entered this part do not flow forward along the back surface of the front plate 220. It turned to the back side of. In addition, the upper half of both sides of the lid, with the lid 22 closed, the side plate 224 and the box
A cover plate 225 adapted to the shape of the gap was attached to the side plate 224 with bolts so as to close the gap with 21. Coverboard 22
As the material of No. 5, for example, a metal plate or a synthetic resin plate is preferable.

Next, with respect to the bottom of the lid, a drain plate 228 folded back toward the front front side is provided on the back side of the bottom of the front plate 220 so that water flowing down on the surface of the front plate 220 does not enter the interior due to the air flow. Attached. For the lower half of both sides of the lid, the notch in the side plate 224 is
Since it has a structure corresponding to the surface of 21, the vertical line of the side plate 224 indicated by reference numeral 224 a corresponding to the edge of the cut and the bottom of the front plate 220, actually the rear surface of the draining plate 228 are As shown in FIG. 1 and FIG. 5, a rubber sheet is formed in a horizontally long U-shape on the lower side and the lower side of the front opening of the box 21 to which these parts of the lid 22 are applied.
212 is attached so that the lid 22 is in close contact. The rubber sheet 212 is, for example, a synthetic rubber having a thickness of 1.0 mm. lid
In the closed state, the surface is pressed against the rubber sheet 212 by the lid spring 221 shown in FIG.
The gap between the bottom of the lid and the lower half of the box on both sides of the lid can be completely closed.

Further, it is desirable to eliminate the gap around the entire circumference of the lid 22 by filling an elastic filler such as a silicon bond in a portion where a slight gap remains, such as an opening corner of the box body 21. In addition, the waterproofing of the present invention
It is needless to say that the dustproof structure can be applied to the above-described electric coupler having two upper and lower stages.

[0019]

According to the present invention, the contact piece portion is completely shielded from the outside in the open state with the lid covered, and a thorough waterproof and dustproof structure is provided to prevent the performance degradation of the electrical coupler, It has excellent effects of improving reliability and reducing maintenance costs.

[Brief description of the drawings]

FIG. 1 is a front view of an electric coupler according to an embodiment of the present invention.

FIG. 2 is a front view of a lid of the electric coupler according to the embodiment of the present invention.

FIG. 3 is a side view of a lid of the electric coupler according to the embodiment of the present invention.

FIG. 4 is a partial sectional view showing a portion B in FIG. 3;

FIG. 5 is a conceptual diagram illustrating a moment when a lid is closed in the electrical coupler according to the embodiment of the present invention.

FIG. 6 is a front view showing a state where the electric coupler according to the present invention is attached to the mechanical coupler.

FIG. 7 is a side view showing a state in which the electric coupler according to the present invention is attached to the mechanical coupler.

FIG. 8 is a cross-sectional view showing the inside of the electric coupler according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mechanical coupling 2 Electric coupling 3 Contact piece 4 Body wiring 5 Cable 21 Box 22 Cover 23 Push rod 24 Backing plate 25, 26 Insulation stand 211 Gasket 212 Rubber sheet (elastic sheet) 220 Front plate 221 Lid spring 222 Support shaft 223 Cam roller 224 Side plate 224a Contact surface 225 Cover plate (cover member) 227 Water return (plate member) 228 Drain plate (return member) 231 Return spring

Claims (3)

[Claims] 1. An insulating table (25, 26) in which a plurality of contact pieces (3) are arranged is accommodated in an opening on the front surface of a box (21). When not connected, a cylindrical front plate (220) that pivots down about a horizontal support shaft (222) to close the opening and the front plate (220)
), The electric coupler (2) having a lid (22) consisting of a substantially fan-shaped side plate (224) connecting the support shaft (222) to the lower side of the opening surface on the front surface of the box (21). An elastic sheet (212) is attached to both sides and the lower part of the opening surface where the lid (22) that has pivoted and lowered falls, and a part of the back side of the lid (22) that contacts this elastic sheet (212) is machined to a flat surface. Further, with the lid (22) pivoted down, the closing member (225) for closing the gap between the side plate (224) and the box (21) existing above the support shaft (222) is attached to the side plate (22). 224) An electric coupler mounted on the electric connector. 2. The electric coupler according to claim 1, wherein a plate member for water return extending vertically downward is attached to the rear surface of the top of the cylindrical front plate in a lowered state. 3. The electrical coupler according to claim 1, wherein a folded back member for draining water extending forward is attached to the bottom rear surface of the cylindrical front plate in a lowered state.