What is claimed is:
1. A fuel injector (1), in particular an injector for fuel injection systems of internal combustion engines, having an excitable actuator and a valve needle (15) to actuate a valve-closure member (22), which, together with a valve-seat surface (24), forms a sealing seat; a longitudinal axis (28) of the valve needle (15) being inclined at a predefined angle () to a longitudinal axis (29) of a valve housing (11), wherein the armature (4) is linked to an actuating body (12) whose longitudinal axis (29) is inclined with respect to the longitudinal axis (28) of the valve needle (15), and the actuating body (12) acts on the valve needle (15) through a hydraulic device (13).
2. The fuel injector according to claim 1, wherein the hydraulic device (13) is made up of a first chamber (16), a second chamber (20) and a connecting channel (19) connecting the first chamber (16) and the second chamber (20), which are filled with a hydraulic medium.
3. The fuel injector according to claim 2, wherein the first chamber (16), the second chamber (20) and the connecting channel (19) are formed in an insertable component (10) which is insertable into a central recess (9) of the fuel injector (1) and securable there.
4. The fuel injector according to claim 3, wherein the first chamber (16) is formed at an infeed-side end of the insertable component (10).
5. The fuel injector according to claim 4, wherein one face (18) of the actuating body (12) is in contact with a first corrugated tube (17) which terminates the first chamber (16) on the infeed side.
6. The fuel injector according to claim 5, wherein the first corrugated tube (17) is situated so that it has a rim (30) in contact with an infeed-side face (31) of the insertable component (10) and seals the first chamber (16) from fuel.
7. The fuel injector according to one of claims 3 through 6, wherein the second chamber (20) is formed on an injection-side end of the insertable component (10).
8. The fuel injector according to claim 7, wherein the valve needle (15) is in contact with a second corrugated tube (21) which terminates the second chamber (20) on the injection side.
9. The fuel injector according to claim 8, wherein the second corrugated tube (21) is situated so that it has a rim (32) in contact with an injection-side face (33) of the insertable component (10) and seals the second chamber (20) from the fuel.
10. The fuel injector according to one of claims 2 through 9, wherein the cross-sectional area of the second chamber (20) is less than the cross-sectional area of the first chamber (16).
11. The fuel injector according to claims 6 and 8, wherein the infeed-side face (31) of the insertable component (10) runs perpendicular to the longitudinal axis (29) of the actuating body (12), while the injection-side face (33) of the insertable component is oriented at an angle to the longitudinal axis (29), which deviates from 90 by the magnitude of the angle ().
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A material feeding device comprising:
a spool configured so as to rotate around an axis;
a material which is wrapped around the spool;
a material feeding mechanism which is configured to feed the material in a feeding direction, thereby unraveling the material from the spool; and
a force deflection device which is arranged between the spool and the material feeding mechanism, and is connected to the material;
wherein the force deflection device is configured to as to deform physically when the material feeding mechanism applies an initial feeding force to the material.
2. The material feeding device of claim 1;
wherein the material is a thread.
3. The material feeding device of claim 1;
wherein the force deflection device includes a spring.
4. The material feeding device of claim 1;
wherein the force deflection device is configured to deform physically under an applied force in the range of 10 to 100 g-force.
5. A method of feeding a material from a spool, the method comprising:
providing a spool which rotates around an axis;
providing a material which is wrapped around the spool;
applying an initial feeding force to the material so as to unravel the material from the spool; and
physically deforming a force deflection device which is connected to the material and absorbs a portion of the initial feeding force before the initial feeding force is transferred to the thread on the spool.
6. The method of claim 5;
wherein the material is a thread.
7. The method of claim 5;
wherein the force deflection device includes a spring.
8. The method of claim 5;
wherein the force deflection device is configured to deform physically under an applied force in the range of 10 to 100 g-force.