Camshaft adjuster having a restoring spring
View Patent ↗A configuration of a camshaft phaser ( 1 ) having a stator ( 2 ) and a rotor ( 3 ), the stator ( 2 ) and the rotor ( 3 ) being formed as sheet-metal parts and having integral shaped sheet-metal sections ( 12 ) for receiving a spring ( 4 ) and the spring ends ( 5, 6 ) thereof.
1. A camshaft phaser comprising:
a stator;
a rotor; and
a spring, the rotor having one rotational degree of freedom relative to the stator, the rotor being translationally fixed relative to the stator, the rotor having a plurality of vanes, the spring bracing the rotor in terms of rotational displacement against the stator, and the spring having a coil body having a plurality of spring ends,
the rotor and the stator each made as formed sheet-metal parts and having integral shaped sheet-metal sections for supporting the spring,
wherein one of the spring ends extends into the vane.
2. The camshaft phaser as recited in claim 1 wherein one of the integral shaped sheet-metal sections is formed as a through-extending recess, the other of the spring ends being supported by the through-extending recess.
3. The camshaft phaser as recited in claim 2 wherein the spring ends act sealingly.
4. The camshaft phaser as recited in claim 1 wherein one of the integral shaped sheet-metal sections is formed as a material protuberance, the spring being mounted by the material protuberance.
5. The camshaft phaser as recited in claim 1 wherein the rotor has a diameter through which the spring is guided.
6. The camshaft phaser as recited in claim 1 wherein the spring is radially inside of an inner circumferential surface of the rotor.
7. The camshaft phaser as recited in claim 1 wherein an outer circumferential surface of the stator includes portions protruding radially inward.
8. The camshaft phaser as recited in claim 1 wherein the stator is formed by a single integral sheet of metal.
9. The camshaft phaser as recited in claim 1 wherein the stator is formed by a hollow section of sheet metal.
10. The camshaft phaser as recited in claim 1 wherein the rotor is formed by a single integral sheet of metal.
11. The camshaft phaser as recited in claim 1 wherein the rotor is formed by a hollow section of sheet metal.
12. The camshaft phaser as recited in claim 1 wherein the stator is formed as a one-piece metal bowl.
13. The camshaft phaser as recited in claim 12 wherein the one-piece metal bowl includes a bottom and peripherally extending wall substantially orthogonal to the bottom, the peripherally extending wall being formed by a thickness of the sheet metal.
14. The camshaft phaser as recited in claim 13 wherein the one-piece metal bowl is star-shaped.
15. The camshaft phaser as recited in claim 1 wherein the rotor is formed as a one-piece metal bowl.
16. The camshaft phaser as recited in claim 15 wherein the one-piece metal bowl includes a bottom and peripherally extending wall substantially orthogonal to the bottom, the peripherally extending wall being formed by a thickness of the sheet metal.
17. The camshaft phaser as recited in claim 16 wherein the one-piece metal bowl is star-shaped.
18. A camshaft phaser comprising:
a stator;
a rotor; and
a spring, the rotor having one rotational degree of freedom relative to the stator, the rotor being translationally fixed relative to the stator, the rotor having a plurality of vanes, the spring bracing the rotor in terms of rotational displacement against the stator, and the spring having a coil body having a plurality of spring ends,
the rotor and the stator each made as formed sheet-metal parts and having integral shaped sheet-metal sections for supporting the spring,
wherein one of the integral shaped sheet-metal sections is formed as a through-extending recess, one of the spring ends being supported by the through-extending recess.
19. A camshaft phaser comprising:
a stator;
a rotor; and
a spring, the rotor having one rotational degree of freedom relative to the stator, the rotor being translationally fixed relative to the stator, the rotor having a plurality of vanes, the spring bracing the rotor in terms of rotational displacement against the stator, and the spring having a coil body having a plurality of spring ends,
the rotor and the stator each made as formed sheet-metal parts and having integral shaped sheet-metal sections for supporting the spring,
wherein one of the integral shaped sheet-metal sections is formed as a material protuberance, the spring being mounted by the material protuberance.