JPH0353758B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a trolley current collector used for powering various moving loads.

[Background technology]

As shown in FIG. 15, the current collector of the trolley system has a current collecting arm 30 attached to a movable load (not shown) via a mounting base 31 so as to be movable up and down, and a current collector at the tip of the current collecting arm 30. The current collector 33 attached to the holding frame 32 is connected to the trolley wire 35 by the spring 34.
(FIG. 16). The trolley wire 35 is connected to the construction material 3 by the hanger 37.
It is hung at 8. 39 is a lead wire.

The conventional current collector 33 is made of a current collector material having excellent wear resistance and arc resistance and is integrally molded. However, this resulted in the following problems.

In use, since the permissible wear portion of the collector 33 that comes into sliding contact with the trolley wire 35 is a part of the upper surface of the collector exchange line l shown in FIG. It is uneconomical and expensive to construct the current collector material, which is a special material.

Since the current collector material generally uses a carbon-based molded product or a sintered alloy, it is difficult to connect the current collector 33 and the lead wire 39 by spot welding or screw tightening. That is, since carbon and sintered alloy are materials that cannot be spot welded, the lead wire 39 cannot be directly spot welded. Furthermore, since carbon and sintered alloys are brittle materials, caulking and threading using taps lack reliability.

For these reasons, the lead wire 39 is generally connected to the collector 33 by attaching a crimp terminal 40 to one end of the lead wire 39 and applying it to the side of the collector 33, as shown in FIG. screw 41
A method of fixing by tightening with a nut 42 is used.

However, when the lead wire 39 is attached to the crimp terminal 40 and the screw 41, the space for this portion becomes large, and therefore, in a multi-wire type insulated trolley wire, the dimension between the conductors is restricted.

If the entire current collector 33 is made of carbon sintered alloy, the current collector 33 will be heavy. Therefore,
Poor wire separation characteristics during current collection running. That is, when the collector 33 resists the spring 34 and separates from the wire due to frictional vibration during running or at a stepped portion of the contact portion of the trolley wire, the inertial force of the collector 33 is large, so that the contact increases.

[Purpose of the invention]

It is an object of the present invention to provide a trolley current collector that requires less use of expensive materials with excellent wear resistance, allows easy connection of lead wires, is lightweight, and has improved wire separation characteristics. purpose.

[Disclosure of the invention]

The trolley current collector of this invention has a metal base,
A flat metal base having a plurality of holes and a recessed lead wire attachment portion is integrally molded so as to cover approximately half of the metal base, including a portion of the holes, and is attached to the trolley wire. A sliding contact body that comes into sliding contact, a lead wire welded to the lead wire attachment portion, and an arm attachment portion that includes the remainder of the hole and straddles the lead wire attachment portion and is attached to the remaining half of the metal base. It is equipped with an integrally molded insulator.

According to the configuration of the present invention, since the sliding contact body and the insulator are each integrally molded on the metal base, they can be easily and securely connected to each other, and furthermore, it is easy to insulate the lead wire attachment portion, and the arm attachment portion can be easily and securely connected. Insulation from the current collector arm to be attached can also be achieved reliably and easily. In addition, expensive materials with excellent wear resistance and arc resistance are used only for the sliding contact body, and it is economical because expensive materials do not need to be used for supporting parts that do not require these properties. The metal base is inexpensive because it can be easily pressed using sheet metal or the like. In addition, since a part of the trolley current collector is metal-based, it can be lightweight, and therefore the inertia force is small and the line separation characteristics during running are good.
Furthermore, the metal base can be made of materials such as copper or brass, which are easy to spot weld, and are not brittle, and the lead wires can be directly welded, making connection easy.

Embodiment An embodiment of the present invention is shown in FIGS. 1 to 14. As shown in FIG. 1, this current collector 1 is made by embedding an embedding piece 2a having a hole 8 in a metal base 2.
The sliding contact body 3 is integrally molded, and the lead wire 5 is spot welded to the lead wire attachment portion 4 recessed in the metal base 2, and the metal base 2 includes the rear hole 7 and straddles the lead wire attachment portion 4. The remaining part of the base 5 is integrally covered with an insulator 6 made of synthetic resin or the like, and an arm attachment part 16 for attaching a current collecting arm 12 to the insulator 6 is provided to form a block as a whole.

The metal base 2 is made by pressing a sheet metal made of copper or brass, and is shown in FIGS. 5 to 8.
It has the shape shown in the figure. The embedded piece 2a is knurled on both sides. 9 is a notch for attaching a current collecting arm.

9 to 12 show a state in which only the sliding contact body 3 is integrally molded on the metal base 2. The sliding contact body 3 is made of carbon, sintered alloy, or the like.

FIG. 13 and FIG. 14 show a current collector using this current collector. In the figure, reference numeral 10 denotes a mounting base, which is fixed to a moving load with a presser plate 11 and screws. Two current collecting arms 12 are attached to a mounting base 10, and a current collector 1 is attached to the tips of the two current collecting arms 12. The current collecting arm 12 has two link rods 13 and a tip member 14, and constitutes a parallel link. The current collecting arm 12 is urged upward by a spring member (not shown). 15 is a trolley wire.

This configuration is economical because only the sliding contact body 3 needs to be made of an expensive material with excellent wear resistance and arc resistance. The sliding contact body 3 and the insulator 6 can be easily and securely connected to the metal base 2 by integral molding, and the lead wire attachment part 4 can be easily insulated, and the current collecting arm 12 can be attached to the arm attachment part 16. can be reliably and easily insulated. Moreover, since a portion is made of metal base 2, weight reduction can be achieved. Therefore, the inertial force is small, and even if the collector 1 hits the spring due to frictional vibrations during running or a step difference in the contact portion of the trolley wire, the wire will not be disconnected from the wire. Further, since the lead wire 5 can be spot welded to the metal base 2, connection can be easily made. When the lead wires 5 are connected by spot welding, the connecting portions of the lead wires 5 do not protrude beyond the width dimension of the current collector 1. Therefore, even when the conductor spacing is narrow, such as in a multiwire trolley wire, the current collectors can be arranged closely. In addition, since only the sliding contact body 3 is made of current collector material,
Compared to conventional methods that mold the entire product, the molding press requires a smaller capacity, and the manufacturing equipment is simpler.

〔Effect of the invention〕

In the trolley current collector of this invention, since the sliding contact body and the insulator are each integrally molded on the metal base, they can be easily and securely connected to each other, and the lead wire attachment part can be easily insulated and the arm attachment part can be easily and securely connected. Insulation from the current collecting arm to be attached can also be achieved reliably and easily. In addition, expensive materials with excellent wear resistance and arc resistance can be used only for the sliding contact parts, which eliminates the need to use expensive materials for supporting parts that do not require these properties, making it economical. .
The metal base is inexpensive because it can be easily pressed using sheet metal or the like. In addition, since a part of the trolley current collector is metal-based, it is lighter in weight.
Therefore, the inertial force is small and the line separation characteristics are good during running. Furthermore, the metal base can be selected from materials such as copper or brass, which are easy to spot weld, and are not brittle.
Since the lead wires can be directly welded, connection is easy.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a bottom view thereof, Fig. 4 is a side view thereof, and Fig. 5 is a front view of the metal base. Fig. 6 is a plan view of the same, Fig. 7 is a bottom view of the same, Fig. 8 is a side view of the same, Fig. 9 is a front view of the state in which the metal base and sliding contact body are integrally molded, and Fig. 10 is a plan view of the same. 11 is the same bottom view, 12th is the same side view,
FIG. 13 is a front view of a current collector using the same current collector, FIG. 14 is a plan view of the same, FIG. 15 is a side view of the conventional current collector, FIG. 16 is a sectional view of the same, and FIG.
The figure is an exploded perspective view. DESCRIPTION OF SYMBOLS 1... Current collector, 2... Metal base, 2a... Embedded piece, 3... Sliding contact body, 4... Lead wire attachment part, 5... Lead wire, 6... Insulator, 7, 8 ……
Hole, 16...Arm attachment part.

Claims (1)

[Claims] 1. A flat metal base with a plurality of holes and a recessed lead wire attachment part, and a metal base that is integrally molded so as to cover approximately half of the metal base, including a portion of the holes, and slide into contact with the trolley wire. A sliding contact body, a lead wire welded to the lead wire attachment portion, and an arm attachment portion, including the remainder of the hole, and integrally molded on the remaining half of the metal base so as to straddle the lead wire attachment portion. Trolley current collector with insulators.