WO1988004946A1

WO1988004946A1 - Sliding contact for toy cars with electric drive motor

Info

Publication number: WO1988004946A1
Application number: PCT/EP1987/000753
Authority: WO
Inventors: Kurt Hesse
Original assignee: Kurt Hesse
Priority date: 1987-01-07
Filing date: 1987-12-03
Publication date: 1988-07-14
Also published as: CA1293378C; EP0277312A1; AU1057288A; DE3700226A1

Abstract

A toy car has an electric drive motor that contacts current conductors formed in the roadway or between rail tracks via sliding contacts permanently mounted in the car body. In order to improve their contact, the sliding contacts are composed of carbon fiber bundles (5). The carbon fibers (5') are held together by sleeves (6) and extend part-way beyond the sleeves (6) in the direction of the current conductors, whereby the sleeves (6) secure the carbon fiber bundles (5) to the car body (1').

Description

description

Sliding contact for toy vehicles with electrical

Drive motor

The invention relates to a toy vehicle with an electric drive motor, which makes contact with current conductors formed in the vehicle chassis by means of sliding contacts fixedly arranged in the vehicle chassis.

In the case of toy vehicles which can be moved on carriageways or rail tracks, it is known to tap off the current conductors by means of sliding contacts arranged in the vehicle chassis. Sloping spring plate strips or elastically bendable metal fabric strips serve as sliding contacts. As a disadvantage, the known sliding contacts favor the accumulation of dust particles between themselves and the current conductors, as a result of which contacting difficulties often arise.

It is an object of the invention to provide measures for improving contact in the case of sliding contacts of toy vehicles.

According to the invention it is provided for this that the sliding contacts are formed by carbon fiber bundles, the carbon fibers of which are pressed by sleeves which are protruded by the carbon fiber bundles with a partial slope in the direction of the current conductors and the carbon fiber bundles in the Determine vehicle chassis. The sliding contacts thus formed come with the front ends with the current conductors, for. B. Conductor rails for support, with slight deflections occurring during driving operation with spring-back effect of the carbon fibers, which are guided along the current conductor with a large number of marginal edges and, in addition to a secure permanent system, also a self-cleaning effect for the contacting areas of Provide carbon fibers and electricity conductors. In addition, the better contacts have a favorable effect on the driving behavior, which leads to a smooth and quiet running of the driving toy.

According to a preferred embodiment, the carbon fiber bundles are fixed interchangeably in openings in the vehicle chassis by means of the mounting sleeves. In this case, the socket sleeves formed from a metallic material can expediently be held in the openings in a form-fitting, non-positive or frictional manner and have connection springs for electrical conductors. It is understood that the socket sleeves arbitrarily, for. B. can be formed by pipe sections or curved flat strips. In the latter case, the connection springs can be achieved by cutouts.

In a further embodiment, in order to improve the contact of the individual carbon fibers with one another and between carbon fibers and mounting sleeves, it is provided that the carbon fibers individually carry a coating made of an electrically conductive material on the outside. As such an edition can, for. B. Flour or a metallic material, serve in particular a metal vapor coating. Copper is proposed as a suitable metal.

The invention is illustrated using an exemplary embodiment in the drawing. Show it:

1 is a toy vehicle in bottom view,

2 a part of a toy vehicle in side view,

3 is a carbon fiber bundle in section, enlarged,

Fig. 4 a carbon fiber bundle in plan view,

FFiigg .. 55 a carbon fiber bundle of a modified design, FIG. 6 a section of a carbon fiber in section, greatly enlarged, and FIG. 7 a toy with a current conductor of another design.

In the toy vehicle 1, 1 'denotes a vehicle chassis which is supported in a manner known per se by wheels 2 and serves as a carrier for an electric drive motor with a gear arrangement (not shown) and a body 3. The vehicle chassis 1 accommodates sliding contacts in openings 4 which are held in a frictionally non-displaceable manner and which are formed by a bundle 5 of individual carbon fibers 5 ". The carbon fibers 5 ¹ are pressing through a metal sleeve 6, as shown in FIG. 3 , wherein the metal shell 6 in the direction of the current conductors 7 through the carbon fiber 5 'overhangs. the metal sleeve ^• 6 can with a rectangular cross-sectional shape (Fig. 4) or round cross-sectional shape (Fig. 5) may be carried out. ^the' Metall¬ sleeve 6 is through a bundle of carbon fibers 5 'formed around flat strips and has a gate at the end facing away from the current conductor 7 as a connection eder 8 for electrical conductors 9. In order to increase the electrical conductivity and improve the contacts, the carbon fibers 5 'are made of an electrically conductive metal material, eg with a preferably vapor-deposited or galvanically applied layer 10'. B. provided copper. Also anderwei- ^"term appropriate elements such as Flour -are provided as Circulation Materials.

7, as a sliding contact, has a spring clip 11 which makes contact with carbon fibers 5 'which abut one another in grooves 2 of the roadway.

Claims

1. Toy vehicle with an electric drive motor which makes contact with current conductors formed in the carriageway or between rail tracks via fixed sliding contacts in the vehicle chassis, characterized in that the sliding contacts are formed by carbon fiber bundles (5), the Carbon fibers (5 ¹ ) are pressed by sleeves (6) which are partially protruded through the carbon fiber bundles (5) in the direction of the current conductor (7) and the carbon fiber bundles (5) in the vehicle chassis (l ¹ ) establish.

2. Toy vehicle according to claim 1, characterized gekennzeich¬ net that the carbon fiber bundles (5) by means of the Fassungs¬ sleeves (6) in openings (4) of the vehicle chassis (1 ') are fixed interchangeably.

3. toy vehicle according to claim 1 and 2, characterized gekenn¬ characterized in that the socket sleeves (6) are positively, non-positively and frictionally fixed in the openings (4).

4. Toy vehicle according to claim 1, characterized gekennzeich¬ net that the socket sleeves (6) formed from a metallic material and have connection springs (8) for electrical conductor. -

5. toy vehicle according to claim 1 and 2, characterized gekenn¬ characterized in that the carbon fibers (5 ¹ ) individually outside a support (10) - made of an electrically conductive material.

6. toy vehicle according to claim 5, characterized gekennzeich¬ net that the support (10) is formed by a metal vapor "coating.

7. Toy vehicle with an electric drive motor, which is connected via sliding contacts arranged in the vehicle chassis to current conductors formed in the roadway or between rails, characterized in that ^' the sliding contacts are formed by spring clips (11) and the current conductors by in a longitudinal direction ¬ Only upright carbon fibers are formed, which slightly protrude above the carriageway or the sleepers of the rails.