JPH0517761B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention is directed to biasing a current collector supported by a spring-loaded arm through a restricted opening in an insulating cover of an insulated trolley onto an exposed internal conductor surface. The present invention relates to a current collector in a contact mode.

[Conventional technology]

Conventionally, this type of current collector has one end pivotally supported on the mounting base to be able to swing freely, and a pivot is attached via a bearing to the tip of the arm, which is biased by a tilting force due to suspension of a spring. However, a structure has generally been adopted in which a U-shaped clevis fitting is fixed to this pivot, and a holder for supporting a current collector is suspended from the clevis fitting. Such a holder has a block shape and is placed inside the U-shape of the clevis fitting, and is supported by hooking a pin protruding from the side of the block into a recess formed on the upper side of the clevis fitting. .

[Problem that the invention seeks to solve]

According to a current collector having such a structure, the holder is set in the clevis fitting in an unsteady state, so the relative gap between the holder and the clevis fitting becomes large, and as a result, the current collector attachment mechanism at the end of the arm becomes bulky. However, it could not be used in places where a reduction in the operating range was required due to lack of space. In addition, if the holder is simply hooked with its side protrusion into the recess of the clevis fitting, there is a risk that the holder will fall off, so it is necessary to add a means to prevent it from falling off in the recess of the fitting. It was troublesome.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a current collector of this type in which the current collector mounting mechanism is thin and narrow.

[Means for solving problems]

In order to achieve the above object, the current collector of the present invention has a substantially U-shaped synthetic resin pedestal that is pivotally supported via a bearing 7 and a pivot 9 at the tip of a swingable, spring-biased arm 4. 10, and a plate-shaped synthetic resin holder 12 that supports the collector 11 and can be inscribed and fitted into the U-shaped inner surface of the synthetic resin holder, and the synthetic resin holder 12 has a has a saddle-shaped protrusion 13 at the center of the interior and a shallow groove 14 on the U-shaped inner side surface, and one synthetic resin holder has a recess 15 at the center of the bottom that fits into the saddle-shaped protrusion. It also has a small protrusion 16 on the side surface that fits into the shallow groove.

[Effect]

By simply pushing the synthetic resin holder that supports the current collector into the U-shaped interior of the synthetic resin holder, the holder will be inscribed and fitted into the U-shaped inner surface of the holder, and at that time, the holder will be pinched from the thickness direction. In this state, the concave part of the holder fits into the saddle-shaped convex base of the holder so as to straddle it, suppressing the movement of the holder in the width direction,
At the same time, the small protrusions of the holder fit into and lock into the shallow grooves of the cradle, thereby preventing the holder from slipping out from the cradle.

The small protrusion of the holder protrudes from the side of the holder with a width that matches the internal width of the U-shape of the holder, so when the holder is pushed into the U-shaped interior of the holder, the U-shaped side piece of the holder protrudes from the small protrusion. The small protrusion slides on the inner surface of the pedestal while being slightly elastically deformed by the height of. Such slight elastic deformation can be easily performed because the pedestal is made of a synthetic resin molded body.

〔Example〕

The description will be made 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 implanted in the substrate 1, and a support tube 3 is rotatably inserted into the support rods 2, 2. Reference numerals 4 and 4 are arms, and one end thereof is pivotally connected to the support tube 3 by a pin 5, so that the arm 4 can swing vertically and horizontally.

A coil spring 6 is stretched obliquely between the parallel arms 4, 4, and thereby applies a biasing force to tilt the arm 4 upward in the drawing.
Tubular bearings 7 are connected to the swinging ends of the arms 4, 4 so as to be rotatable with each other by pins 8, 8, and a pivot 9 inserted through the bearings 7
A holder 10 is fixed to the holder 10, and a holder 12 carrying a current collector 11 is attached to the holder 10 by push-fitting.

The pedestal 10 and the holder 12 are made of synthetic resin such as polycarbonate to have appropriate elasticity, so that they can easily fit into the recesses and recesses, which will be described later.

The pedestal 10 has a substantially U-shape, and has a saddle-shaped protrusion 13 raised at the center of the U-shape, and a shallow groove 14 recessed in the inner side surface. One end of the pivot shaft 9 is embedded and fixed in a portion forming the convex base 13. On the other hand, the holder 12 is
It is formed into a plate shape with a thickness matching the U-shaped internal width of the holder 10 with the lower part of the collector 11 buried, and a recess 15 is provided in the center of the bottom, and a dish-shaped plate is formed on the side surface. A small protrusion 16 is provided.

When the holder 12 is pushed in from the upper side of the U-shape of the holder 10, the side surface of the holder 12 is inscribed and sandwiched between the U-shaped inner side surfaces of the holder 10, and at that point, the recess 15 is inserted into the saddle-shaped protrusion 13. They fit across each other to suppress movement in the width direction, and
The small protrusion 16 fits into the shallow groove to provide a locked state in which the holder does not come out.

A pin is inserted through the bearing 7 and the pivot 9 so as to pierce them, thereby preventing the pedestal 10 from falling off.

Note that 17 is a lead wire connected to the current collector 11 through the holder 12.

In addition, T is an insulated trolley, and the trolley conductor Tb
It is covered with an insulating cover Tc having a substantially U-shaped cross section, and the current collector 11 is pressed into contact with the exposed surface of the conductor in the opening of the insulating cover Tc.

〔Effect of the invention〕

According to the current collector of the present invention as described above, by simply pushing the plate-shaped synthetic resin holder carrying the current collector into the U-shaped interior of the approximately U-shaped synthetic resin holder, both of them can be removed. Even when the arms are closely integrated, the mounting mechanism between the arm tip and the current collector can be achieved by positioning and preventing it from coming off by the mutual fitting of the saddle-shaped protrusion and the recess and the mutual locking of the shallow groove and the small protrusion. The parts can be made thinner and narrower to make the parts more compact, and the number of parts to be assembled is smaller, making assembly easier.

Furthermore, the holder can be removed by forcibly pulling it out, so even if the collector wears out due to sliding and reaches its usable limit, an unused collector with a similar holder can be prepared. It is also easy to replace the collector.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the current collector for an insulated trolley according to the present invention, in which FIG. 1 is a front view of the entire current collector, FIG. 2 is a side view of the device, and FIG. 3 is a diagram of the device. FIG. 3 is an exploded perspective view of essential parts. In the symbols, 1 is a substrate, 2 is a support rod, 3 is a support tube, 4 is an arm, 5 is a pin, 6 is a coil spring,
7 is a bearing, 8 is a pin, 9 is a pivot, 10 is a synthetic resin holder, 11 is a current collector, 12 is a synthetic resin holder, 13 is a saddle-shaped convex base, 14 is a shallow groove, 15
is a recess, and 16 is a small protrusion.

Claims (1)

[Claims] 1 A substantially U-shaped synthetic resin pedestal 10 supported pivotally via a bearing 7 and a pivot 9 at the tip of a swingable, spring-biased arm 4, and a synthetic resin holder 10 supporting a current collector 11 and made of the synthetic resin. It has a plate-shaped synthetic resin holder 12 that can be inscribed and fitted into the U-shaped inner surface of the synthetic resin holder, and the synthetic resin holder has a saddle-shaped protrusion 13 in the center of the interior, and also The U-shaped inner side surface has a shallow groove 14, and one synthetic resin holder has a recess 15 at the center of the bottom that fits into the saddle-shaped protrusion, and a small protrusion on the side surface that fits into the shallow groove. 1. A current collector for an insulated trolley, characterized in that it has a current collector.