DE2205301C3 - Sliding contact pin - Google Patents

Description

The invention concerns a sleep contact pen, the serves to transmit an electric current from a moving part to a stationary part. According to the invention, a sliding contact known in motor vehicle construction is assumed Power transmission from the rotating steering wheel to a permanently installed sliding contact ring. The so well-known sliding contact pin, which in the .-. I rotating Steering wheel or vice versa can be installed in the fixed steering wheel column, consists of; a contact carrier on which carbon or metal contact sits, on which one the connected power line The compression spring attached to the power line is supported over an exposed section, and from a sleeve made of insulating maicfial which freely encloses the spring and in part the contact carrier. from which protrudes at one end of the contact carrier against the pressure of the spring and the clamped on the power line at the other end. Has a contact pin designed in this way Disadvantage. The exposed section of the conductor connected to the contact carrier is used in the Shifting movements of the contact carrier constantly stressed mechanically by bending. The the Insulation used for external insulation must consist of two half-shells in this version, whose cohesion and its attachment to the power line is effected by a clamping ring. As a result, the contact pin consists of a large number of individual parts, their manufacture and Assembly are associated with a correspondingly high level of material and labor and the Make contact pin undesirably more expensive.

The invention describes the

Disadvantages eliminated. The invention consists of starting of a sliding contact pin of the design described above in that the contact support pin consists of a sheet metal hollow body, which is in the

The part surrounded by the compression spring is closed, in the adjoining part, however, in the longitudinal direction is cut open and bent up and on that by horizontally cutting out the upturned edges Tongues are formed, of which those of the insulating sleeve

ίο closest tongues apart and as Stops are bent over the edge of the sleeve while the other tongues and the intermediate parts of the Sheet metal edges for attachment to the conductor

is to serve.

the extended contact support pin, the spacer spring and the one-piece insulation that surrounds the parts

ao lierhülse, and there is no need to assemble it considerable amount of work. The cost of making the individual parts and assembling them are therefore very small compared to the known design. In addition, the consortium

»5 tact pin of much greater stability and operational reliability is.

The invention is illustrated in the drawing, for example.

F i g. I shows a longitudinal section through an invented

properly designed sliding contact pin;
Fig. 2 is a section along BB, and
Fig. 3 shows a section according to AA . In Fig. 4, a contact carrier is shown in perspective.

The sliding contact pin consists of the contact support pin 1, on which a sliding contact 2 is arranged at the bottom and which is surrounded by a compression spring 3 seated on the contact 2 at the bottom. From above is a one-piece insulating

sleeve 4 pushed, which has a shoulder extension 4a on the inside, on which the compression spring 3 is supported upwards.

The contact support pin 1 is provided with an »extension 5 with which it connects directly to the power line 6 connected. At the top of the extension are tongues 5a for limiting the sliding of the sleeve 4 upwards and tongues 56 are provided, which are used to attach the extension to the power line 6.

The contact support pin 1 consists (cf. in particular FIG. 4) in the example case of a rectangular or round bent sheet metal body, which is closed in the part labeled 1, in the extension part 5 on the other hand is bent and on the

The tongues 5a and 56 are formed on the side walls are, of which the tongues 5a after sliding the sleeve 4, as can be seen from FIGS. 1 and 2, apart and bent over the top edge of the sleeve'4 so that they slide the sleeve

prevent upward by the pressure of the spring. The tongues 56 and the one between these and the tongues 5 a located part of the extension are bent over the conductor 6 and clamped with this. The contact pin 1 can be in the simplest

Make it in one piece from sheet metal. But it can also be made solid and the tongues 5a and 56 may be attached by soldering or otherwise be.

1 sheet of drawings

Claims (2)

Patent claims: 1. Sliding contact pin, consisting of a resiliently slidable hewn in an insulating sleeve, carrying a sliding contact at the front end and connectable with the rear end to a power cable, for transmitting an electric current from a movable part such. B. the hub of a steering wheel on a fixed part, z. B. a permanently installed contact ring or vice versa, characterized in that the contact support pin (1/5) consists of a sheet metal hollow body, which is closed in the part (1) surrounded by the compression spring, but cut open in the longitudinal direction in the adjoining part (S) and bent open and on which tongues (5a and 56) are formed by horizontally cutting out the upturned edges, of which the tongues (Sei) closest to the insulating sleeve (4) are bent apart and as stops over the edge of the sleeve, while the remaining tongues (56) and the intermediate parts of the sheet metal edges created by cutting and bending open serve for attachment to the conductor (<·). 2. Sliding contact pin according to claim 1, characterized characterized in that the contact carrier (1) is solid and the tongues (5a. 56) by soldering or attached to it in some other way.