JPS63117603A - Current collector for insulated trolley - Google Patents

Abstract

PURPOSE:To reduce a mounting bulk height from the end of an arm to a current collector by correlating a holder with a retainer by an engagement of a recess with a projection between the collector and an arm for pivoting the collector. CONSTITUTION:A supporting rod 2 is inserted to a base plate 1, and a supporting tube 3 is rotatably inserted thereto. Then, one end of an arm 4 is pivotally secured by a pin 5 to the tube 3. A coil spring 5 is extended between parallel arms 4. A bearing 7 is attached rotatably by a pin 8 to the pivotal end of the arm 4, and a retainer 10 is secured to a pivot 9 inserted to the bearing 7. Then, a holder 12 for bearing a current collector 11 is attached to the retainer 10 by an engagement of a recess with a projection. Thus, the bulk height from the pivotal axis of the end of the arm to the collector can be shortened to be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement in a current collector that is brought into biased contact with an internal conductor through a port in an insulating cover of an insulated trolley.

[Conventional technology]

Conventionally, this type of 4A electric device has a pivot attached to the tip of an arm that is swingable and is given a tilting force by suspension of a coil spring, a U-shaped clevis fitting is fixed to this pivot, and this clevis fitting is A structure in which a holder carrying a current collector is suspended is generally adopted.

[Problem that the invention seeks to solve]

According to a current collector having such a structure, the bulk from the pivot portion at the tip of the arm to the current collector is large, which poses a problem in use in places where a reduction in the operating range is desired these days.

An object of the present invention is to solve the problems of the prior art described above, and to provide a current collector of this type that can be made more compact by reducing its bulk.

[Means for solving problems]

In order to achieve the above object, the current collector of the present invention has a synthetic resin holder pivoted on a bearing at the tip of a swingable, spring-biased arm, and collects electricity on the synthetic resin holder. It has a structure in which a synthetic resin holder that carries electrons is attached by fitting the concave and convex portions.

Such a receiver has a concave-convex fit between the base and the holder, for example, the receiver has six saddle-shaped bases on the metal side at the center of the interior, and a shallow groove on the inner side surface, and the holder on the negative side has the corresponding convex at the center of the bottom. By forming a recess that fits into the base and a small protrusion on the side that fits into the shallow groove,
It is something that can be accomplished.

〔Example〕

A detailed description will be given below with reference to the attached drawings.

In the figure, reference numeral 1 denotes a board serving as the base of the device, which is connected to a moving device (not shown) to be towed and moved. Support rods 2, 2 are attached to the board 1.
is installed, into which the support tube 3 is rotatably inserted. 4, 4 is an arm, and one end thereof is pivotally connected to the support tube 3 by means of a pin 5, thereby making it possible to swing vertically and horizontally.

A coil spring 6 is stretched between the parallel arms 4.4 and applies a tilting force to the arm 4.

Bearings 7 are attached to the ends of the swinging sides of the arms 4, 4 so as to be rotatable with respect to each other with pins 8°8, and the base 10 is fixed to the pivot shaft 9 inserted through the bearings 7. A holder 12 carrying a current collector 11 brought into contact with a conductor Tb through an opening in an insulating cover Tc of an insulated trolley T is attached to a base 10 by concave-convex fitting.

The support base 10 and the holder 2 can be made of synthetic resin such as polycarbonate, so that they have appropriate elasticity. This becomes important in the concavo-convex fitting described later. One of the receivers 10 is approximately U-shaped, with six saddle-shaped stands 13 raised in the center of the recess, and a shallow groove 14 recessed in the inner surface.

One end of the pivot 9 to be inserted into the bearing 13 is attached so as to be embedded in the protrusion 13 forming part. The other holder 12 has a shape that holds the current collector 11, and has a recess 15 in the center of the bottom and a small protrusion 1 raised in the shape of a dish on the side surface.
6.

Therefore, the holder 12 is inserted from above the base 10, so that it fits into the recess, and as the six units 13 fit into the recess 15, the small protrusion 16 fits into the shallow groove 14, and the predetermined position is reached. This is a concave-convex fitting.

Note that 17 is a lead wire connected to the current collector 11 through the holder 12. Further, the holder 18 passes through the bearing 7 and the pivot 9 to prevent the stand 10 from being pulled out and falling.

〔Effect of the invention〕

As explained above, the current collector of the present invention is one in which a synthetic resin holder and a receiver are connected by convex-concave fitting between the current collector and the tip of the arm that pivotally supports the current collector. Therefore, the installation from the tip of the arm to the current collector has the effect of reducing the bulk and making it more compact.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the current collector for an insulated trolley according to the present invention, and FIG. 1 is a front view of the entire device, FIG. 2 is a side view of the trunk device, and FIG. 3 is a perspective view of the main parts of the device. be. Explanation of one symbol - 1: Substrate, 2: Support rod, 3: Support tube, 4: Arm 7: Bearing, 9: Pivot, 10: Holder is stand, 11: Current collector 12: Holder, 13: 6 stand, 14 : Shallow groove, 15: Recessed part 16: Small protrusion

Claims (2)

[Claims] (1) A synthetic resin holder is pivotally supported by a bearing at the tip of a swingable, spring-biased arm, and a synthetic resin holder that carries a current collector is fitted onto the synthetic resin holder in an uneven manner. A current collector for an insulated trolley, characterized in that it is attached by. (2) The resin holder has a saddle-shaped protrusion at the center of its interior and a shallow groove on its inner side surface, and one holder has a recess at the center of the bottom that fits into the convexity, and The current collector for an insulating trolley according to claim 1, wherein small protrusions are formed to fit into the shallow grooves.