Bond pin assembly for connecting connection cables

Abstract

A bond pin assembly for connecting a connection cable with a rail, comprising: a bond pin that is inserted into a through hole in the rail, said bond pin having a transition portion and a screw portion, a diameter of one end of the transition portion being larger than a diameter of the other end of the transition portion, the end of the transition portion having a smaller diameter being connected with the screw portion; a conductive sleeve that is provided between the bond pin and a wall of the through hole of the rail, and a nut that is screwed on the screw portion to fasten an end of the connection cable between the nut and a side wall of the rail. By inserting the conductive sleeve with the shape corresponding to those of the through hole and the bond pin between the through hole and the bond pin and further taking fastening measure, the structural intensity of the bond bin assembly can be increased effectively.

Claims

1. A bond pin assembly for connecting a connection cable with a rail, comprising: a bond pin that is inserted into a through hole in the rail, said bond pin having a transition portion and a screw portion, a diameter of one end of the transition portion being larger than a diameter of the other end of the transition portion, the end of the transition portion having a smaller diameter being connected with the screw portion; a conductive sleeve that is provided between the bond pin and a wall of the through hole of the rail, a nut that is screwed on the screw portion to fasten an end of the connection cable between the nut and a side wall of the rail, and a conductive gasket that is provided between the end of the connection cable and the nut.

2. The bond pin assembly according to claim 1, further comprising: a conductive retainer that is provided between the end of the connection cable and the conductive sleeve to compress the conductive sleeve.

3. The bond pin assembly according to claim 1, wherein, an inner surface of the conductive sleeve is an inclined surface; an outer surface of the conductive sleeve is in contact with the wall of the through hole, the inner surface of the conductive sleeve is in contact with an outer surface of the bond pin, and the conductive sleeve includes a flexible metal.

4. The bond pin assembly according to claim 1, wherein, the end of the transition portion having a larger diameter is out of the through hole of the rail.

5. The bond pin assembly according to claim 4, further comprising: a square head that is provided at the end of the transition portion having a larger diameter, and is used for disassembly.

6. The bond pin assembly according to claim 1, wherein, an inner surface of the conductive sleeve is an inclined surface; an outer surface of the conductive sleeve is in contact with the wall of the through hole, the inner surface of the conductive sleeve is in contact with an outer surface of the bond pin, and the conductive sleeve includes a flexible metal.

7. A bond pin assembly for connecting a connection cable with a rail, comprising: a bond pin that is inserted into a through hole in the rail, said bond pin having a transition portion and a screw portion, a diameter of one end of the transition portion being larger than a diameter of the other end of the transition portion, the end of the transition portion having a smaller diameter being connected with the screw portion; a conductive sleeve that is provided between the bond pin and a wall of the through hole of the rail, a nut that is screwed on the screw portion to fasten an end of the connection cable between the nut and a side wall of the rail, and a conductive retainer that is provided between the end of the connection cable and the conductive sleeve to compress the conductive sleeve.

8. A bond pin assembly for connecting a connection cable with a rail, comprising: a bond pin that is inserted into a through hole in the rail, said bond pin having a transition portion and a screw portion, a diameter of one end of the transition portion being larger than a diameter of the other end of the transition portion, the end of the transition portion having a smaller diameter being connected with the screw portion; a conductive sleeve that is provided between the bond pin and a wall of the through hole of the rail, a nut that is screwed on the screw portion to fasten an end of the connection cable between the nut and a side wall of the rail, a conductive retainer that is provided between the end of the connection cable and the conductive sleeve to compress the conductive sleeve, an inner surface of the conductive sleeve is an inclined surface; an outer surface of the conductive sleeve is in contact with the wall of the through hole, the inner surface of the conductive sleeve is in contact with an outer surface of the bond pin, and the conductive sleeve includes a flexible metal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following, preferable embodiments of the present invention are described in detail in conjunction with the accompanying drawings.

(2) FIG. 1 is a schematic view of a bond pin assembly and a current circuit in the related art;

(3) FIG. 2 is a schematic view of a bond pin and a current circuit according to the present invention;

(4) FIG. 3 is a schematic view of the structure of the bond pin assembly according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) Specific embodiments of the present invention are described in conjunction with the accompanying drawings to further clarify the present invention.

(6) For simplicity, only elements relevant to the present invention are showed in the drawings, and other elements are omitted; and only one of duplicate elements having the same structure or function is schematically shown in some of the drawings, and in the specification, the term a indicates one or more.

(7) FIG. 2 is a schematic view of a bond pin and a current circuit according to the present invention.

(8) FIG. 3 is a schematic view of the structure of the bond pin assembly according to the present invention.

(9) As shown in FIGS. 2 and 3, the present invention provides a bond pin assembly 210 for connecting connection cable 230.

(10) The bond pin assembly 210 includes a bond pin 219 inserted into a through hole 242 in the rail 240 and a conductive sleeve 214 provided between the bond pin 219 and the wall of the through hole 242 of the rail 240.

(11) The bond pin 219 has a transition portion 211 and a screw portion 212. As shown in FIG. 3, the diameter of one end of the transition portion 211 is larger than the diameter of the other end of the transition portion 211. The end of the transition portion 211 having a smaller diameter is connected with the screw portion 212.

(12) As shown in FIG. 3, the conductive sleeve 214 is provided between the bond pin 219 and the wall of the through hole 242 of the rail 240 so as to fill the gaps therebetween.

(13) The bound pin assembly 210 further includes a nut 213 screwed on the screw portion 212 to fasten the end 231 of the connection cable 230 between the nut 213 and the side wall of the rail 240.

(14) When wheels 250 of a train (see FIG. 2) pass through, a power supply 220, the connection cable 230, the bond pin assembly 210, the rail 240, and the wheels 250 form a closed circuit, and the current, which flows in a direction as indicated by the arrow in FIG. 2, is stable because of the firm connection between the connection cable 230 and the rail 240.

(15) Further, in the bound pin assembly 210 shown in FIG. 3, a conductive gasket 216 is provided between the end 231 of the connection cable 230 and the nut 212.

(16) For example, the conductive gasket 216 is a stainless steel flat gasket.

(17) Further, in the bound pin assembly 210 shown in FIG. 3, a conductive retainer 215 is provided between the end 230 of the connection cable 230 and the conductive sleeve 214 to compress the conductive sleeve 214.

(18) For example, the conductive retainer 215 is a copper retainer.

(19) In a preferable embodiment of the present invention, the inner surface of the conductive sleeve 214 is an inclined surface, and is in contact with the outer surface of the bond pin 219. Meanwhile, the outer surface of the conductive sleeve 214 is in contact with the wall of the through hole 242.

(20) For example, the conductive sleeve 214 is made of flexible metal.

(21) In addition, the end of the transition portion 211 having a larger diameter is out of the through hole 242 of the rail 240.

(22) In addition, the bond pin assembly 210 has a square head 218 at the end of the transition portion 211 having a larger diameter, and is used for disassembling the bond pin 219.

(23) With the bond pin assembly 210 according to the present invention, because the conductive sleeve 214 fills the gap between the transition portion 211 of the bond pin and the through hole 242 of the rail 240, the bond pin 219 and the through hole 242 of the rail are firmly bond, which avoids strong vibration of the bond pin 219 caused by the travelling train and in turn avoids loose of the bond pin 219. Further, this avoids increase of the resistance and abnormal signal. Furthermore, the end 231 of the connection cable 230 is fixed by a screw instead of soldering, which decreases work load of mounting.

(24) The above embodiments are merely examples for illustration of the principles of the present invention, and the present invention is not limited to the embodiments. Those of ordinary skill in the art can make various changes and modifications, without departing from the spirit and substance of the invention. Such variations and modifications also fall in the scope of protection of the invention.