DE7247164U - Spark plug cable connector - Google Patents

Description

on - 1. a

R- 126 3
December 7, 1972 Wo / Gü

Attachment to
Utility model registration

ROBERT BOSCH GNBH, STUTTGART

Spark plug cable connector

The invention relates to a spark plug cable connector with an insulating body made of elastic material, the one Has cable connection opening, which is provided with a contact piece is, which is connectable to one end of a connection cable and with its other end in an angled to the cable connection opening formed spark plug connection opening protrudes.

It is a spark plug wire connector with a ready made Insulating body made of elastic material is known, in which the contact piece is designed as a sleeve which is inserted in the spark plug connection opening arranged and welded to a screw-in tip protruding into the cable connection opening. Near its end facing the spark plug is in the sleeve

an annular groove provided with a slot is formed in which a clamping spring is clamped, which connects the spark plug cable connector on the connector at the end of the spark plug. Such a spark plug cable connector is expensive in the Production and therefore expensive.

In addition, a spark plug cable connector has become known, in which the contact piece is designed as a helical spring and is arranged in the spark plug connection opening. The end of the spring facing away from the spark plug is shaped as a hook the end of the connection cable penetrates and so the mechanical and electrical: conductive connection from the connection cable to the contact piece manufactures. In the connector connected to the spark plug, the spring is attached to the connector on the plug. at This embodiment has the disadvantage that the spark plug cable connector is shaken off from the connector on the spark plug can.

The invention is therefore based on the object of a spark plug cable connector to create, in which the contact piece is designed as a latching member, the insulating body the suspension takes over and consists of heat-resistant material, and the simple and cheap to manufacture spark plug cable connector is securely seated on the connection of the spark plug.

According to the invention the object is achieved in that the spark plug connection opening a section for resiliently receiving a arranged on the end of the spark plug connecting bolt Has connection, in its annular recess When the spark plug cable connector is plugged in, the end of the candy that protrudes into the spark plug connection opening is locked into place is.

For this purpose, the contact piece is expediently provided with a shaft and a collar with which the contact piece is firmly attached Insulating body is arranged at the bottom of the cable connection opening.

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The contact piece is advantageously with a conical Head formed which protrudes into the spark plug connection opening and engages in the annular groove of the connection on the spark plug end. As a result, the spark plug cable connector is held securely on the spark plug.

Further advantageous refinements of the invention emerge from the remaining subclaims and the description.

An embodiment of the subject matter of the invention is shown in the drawing. She shows in

1 shows a spark plug cable connector in longitudinal section,

2 shows the plug connected to an ignition cable and plugged onto a spark plug, partly in FIG Longitudinal section.

A spark plug cable connector 1 has an insulating body 2 made of elastic, but heat-resistant material, for example Rubber. In the insulating body 2 is a cable connection opening

3 trained. In the bottom of the cable connection opening 3 is a Kortaktstück 4 attached. The contact piece 4 has a shaft 5, which is followed by a federal government 6. Shank 5 and collar 6 are surrounded by the material of the insulating body 2, whereby the contact piece

4 sits firmly in the insulator. In the cable connection opening 3 extends an end formed as a screw-in tip 7 of the contact piece 4. At the screw-in tip 7 is in the Cable connection opening 3 guided end of an ignition cable 8 mechanically and attached in an electrically conductive manner.

The other end of the contact piece 4 is designed as a conical head 9. It protrudes into a spark plug connection opening 10, which extends in the insulating body 2 at an angle to the cable connection opening 3. The spark plug connector opening 10 has a Section 11 for receiving a front at the end of a spark plug 12

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seen connection - for example a connection nut I3. The section 11 has a smaller diameter than the spark plug connection opening 10. In section 11, a longitudinal groove 14 is formed on the side facing the contact piece 4, which in FIG en :: Spark plug connection opening 10 runs out and into which the conical head 9 of the contact piece 4 protrudes.

At the edge of the spark plug connection opening 10 is on the insulating body 2 an annular bead 15 reducing the opening for sealing formed the candle body.

When attaching the spark plug Kabelanschliißsteckers 1 to the spark plug 12 (- ''. Ig 2) enables the elastic insulating 'ti of the plug 1, that the end of Anschiußmutter 13 behind the conical head 9 <ies contact piece 4 in the section T' , the Zündkerj ^ u connection opening 10 is pushed and the conical head 9 engages in a P.ing groove 16 of the connection nut 13. The elastic insulating body 2 makes the additional spring necessary in the known spark plug cable connectors for locking the plug onto the spark plug 1? superfluous. The easy-to-manufacture and inexpensive contact piece 4 holds the Gtekkei 1 securely on the Zürdkerze 12 and provides a secure, electrically conductive connection between the connection 3-nut 13 of the spark plug 12 and the ignition cable 8.

Likewise, the conical head of the contact piece 4 can be threaded or engage the knurl with which the end of the spark plug 12 is provided in place of the connecting nut I3.

Claims (7)

- β- /. . · '·,! E. 12 6 3 -5 claims 1. Spark plug cable connector with an insulator made of elastic material, which has a cable connection opening which is provided with a contact piece with one end of a connection cable is connectable and at its other end in an angled to the cable connection opening formed spark plug connection opening protrudes, characterized in that that the spark plug connection opening (10) has a section (11) for resiliently receiving one on the Has the end of the spark plug connecting bolt arranged connection (13), in the annular recess (16) at plugged-on spark plug cable connector (1) that in the spark plug connection opening (ΊΟ) protruding end (9) of the contact piece (4-) is engaged. 2. Plug according to claim 1, characterized in that the contact piece (4-) has a shaft (5) with a collar (6), with which the contact piece (4) is firmly arranged in the insulating body (2) at the bottom of the cable connection opening (3). 3. Plug according to claim 1 or 2, characterized in that the contact piece (4-) has a conical head (9) which protrudes into the spark plug connection opening (10, 11). 7247184-6.6.74 -.6> ~ \ '■■ :. ". R. 12 6 3 ¹ »» t ι ■ t ι, '' t ItIl 4. Plug according to one of claims 1 to 3, characterized in that that the contact piece ('! ·) is a screw-in tip (7) designed end for mechanical and electrically conductive connection to the end of the connecting cable (8). 5. Plug according to one of claims 1 to 4, characterized in that that the section (M) is cylindrical around the longitudinal axis of the spark plug connection opening (10) and is provided with a recess (1A-) into which the end (9) of the contact piece (4-) protrudes. 6. Plug according to one of claims 1 to 5 »characterized marked * -, that the insulating body (2) with an annular bead reducing the entrance of the spark plug connection opening (10) (15) is provided. 7. Plug according to one of claims 1 to 6, characterized in that the insulating body (2) made of heat-resistant
Rubber is made. * ■ - 7247 H4-β, ·. 7t