Device for actuating the wastegate flap of an exhaust gas turbocharger
A device actuates a waste gate flap of an exhaust gas turbocharger of an internal combustion engine. The device has an actuator which has an actuator rod, a lever which is connected to the actuator rod and a spindle which is connected to the lever and to which the waste gate flap is secured. A resiliently mounted ball head rod is provided between the actuator rod and the lever.
1. A device for actuating a waste gate flap of an exhaust gas turbocharger of an internal combustion engine, the device comprising:
an actuator having an actuator rod;
a lever connected to said actuator rod;
a spindle connected to said lever and the waste gate flap being fastened to said spindle;
a spring-mounted ball head rod disposed between said actuator rod and said lever; and
an extension nut, said spring-mounted ball head rod having an end area facing said actuator rod and connected via said extension nut to said actuator rod;
said extension nut having a side surface, an end surface, and a slot formed in said side surface and said end surface, said slot extending from said side surface into said end surface; and
said end area of said spring-mounted ball head rod facing said actuator rod being inserted through said slot into said extension nut.
2. The device according to claim 1 , further comprising a bearing bolt connected to said lever, said spring-mounted ball head rod having an end area distant from said actuator rod and said end area having a ball head which is mounted in said bearing bolt.
3. The device according to claim 2 , wherein said bearing bolt has a conical seat and said ball head is mounted in said conical seat of said bearing bolt.
4. The device according to claim 2 , wherein said bearing bolt has a slot formed therein and through said slot said end area of said spring-mounted ball head rod distant from said actuator rod can be inserted into said bearing bolt.
5. The device according to claim 2 , wherein said end area of said ball head distant from said actuator rod has a projection beyond an end area of said bearing bolt distant from said actuator rod.
6. The device according to claim 5 , further comprising a cap covering said bearing bolt.
7. The device according to claim 6 , wherein said projection is configured such that a pressure can be exerted by means of said ball head via said cap in a direction running away from said actuator rod.
8. The device according to claim 1 , further comprising a lock nut, said extension nut being securely connected to said actuator rod via said lock nut.
9. The device according to claim 1 , wherein said end area of said spring-mounted ball head rod facing said actuator rod is mounted in said extension nut.
10. The device according to claim 9 , wherein said end area of said spring-mounted ball head rod facing said actuator rod has a ball joint which is mounted in said extension nut.
11. The device according to claim 10 , wherein said extension nut has a conical seat, said ball joint is mounted by means of said conical seat in said extension nut.
12. The device according to claim 9 , wherein said end area of said spring-mounted ball head rod facing said actuator rod is resiliently mounted in said extension nut.