Axially actuating device having elastic joining portion

Abstract

An axially actuating device having an elastic joining portion is provided, which is used for carrying an object and actuating the object to move axially, and comprises a fixed portion, a moving portion, and a joining member. The joining member is used to combine the fixed portion with the moving portion, such that the fixed portion and the moving portion are axially coupled with each other. Moreover, the fixed portion and the moving portion are respectively a fixed magnet and a coil, such that when a current is applied to the moving portion, the moving portion generates a relative displacement with respect to the fixed portion according to the current, so as to provide an axial displacement. Meanwhile, the moving energy is generated due to the repulsive interaction of the magnetic field, and thus a shock proofing efficacy is also provided.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description given herein below for illustration only, which thus is not limitative of the present invention, and wherein:

FIG. 1 is an exploded stereogram of an embodiment of an axially actuating device having an elastic joining portion of the present invention;

FIG. 2 is an assembled cross-sectional view of an embodiment of the axially actuating device having an elastic joining portion of the present invention;

FIG. 3 is a stereogram of an embodiment of the axially actuating device having an elastic joining portion of the present invention after a supporting member is omitted;

FIG. 4 is a cross-sectional view of an embodiment of the axially actuating device having an elastic joining portion of the present invention when the moving portion is under an extending state;

FIG. 5 shows another implementation aspect of a joining portion of the axially actuating device having an elastic joining portion of the present invention;

FIG. 6 is a relation curve of current and displacement of the axially actuating device having an elastic joining portion of the present invention; and

FIG. 7 is a schematic exploded view of a mold for mold filling process of the joining portion of the axially actuating device having an elastic joining portion of the present invention.

Claims

1. An axially actuating device having an elastic joining portion, for carrying an object and actuating the object, comprising: a fixed portion, being a permanent magnet;a moving portion, being a coil group, movably disposed in the fixed portion; anda joining portion, comprising: a supporting member, for combining with the fixed portion; an actuating member, for combining with the moving portion; and a plurality of joining members, for extendably joining the supporting member to the actuating member.

2. The axially actuating device as claimed in claim 1, which is an axially actuating device for a miniature voice coil motor.

3. The axially actuating device as claimed in claim 1, wherein the permanent magnet is made of a material with a magnetic flux density.

4. The axially actuating device as claimed in claim 1, wherein the fixed portion further comprises a first support, and the permanent magnet is disposed on an inner side of the first support.

5. The axially actuating device as claimed in claim 1, wherein the moving portion further comprises a second support, and the coil group is wound on the second support.

6. The axially actuating device as claimed in claim 5, wherein the second support is a housing having a central round hole and having a wing plate extending from each external end.

7. The axially actuating device as claimed in claim 5, wherein the second support further carries a lens.

8. The axially actuating device as claimed in claim 5, wherein the second support is made of a plastic material.

9. The axially actuating device as claimed in claim 5, wherein the second support is made of a metal material.

10. The axially actuating device as claimed in claim 1, wherein the joining portion is made of a non-metallic composite material.

11. The axially actuating device as claimed in claim 1, wherein the joining portion is made of a silica gel material.

12. The axially actuating device as claimed in claim 1, wherein the joining members are symmetrically disposed.

13. The axially actuating device as claimed in claim 1, wherein the joining portion is made of a non-metallic composite material doped with a magnetic powder.

14. A joining portion structure, used in an axially actuating device having a fixed portion and a moving portion, comprising: a supporting member, for combining with the fixed portion;an actuating member, for combining with the moving portion; anda plurality of joining members, for extendably joining the supporting member to the actuating member.

15. The joining portion structure as claimed in claim 14, wherein the supporting member is a hollow frame.

16. The joining portion structure as claimed in claim 14, wherein the actuating member is a plate-shaped object.

17. The joining portion structure as claimed in claim 14, wherein the joining portion structure is made of a non-metallic composite material.

18. The joining portion structure as claimed in claim 14, wherein the joining portion structure is made of a silica gel material.

19. The joining portion structure as claimed in claim 14, wherein the joining members are symmetrically disposed.

20. The joining portion structure as claimed in claim 14, wherein the joining portion structure is made of a non-metallic composite material doped with a magnetic powder.

21. An axially actuating device having an elastic joining portion, for carrying an object and actuating the object, comprising: a fixed portion, being a permanent magnet;a moving portion, being a coil group, movably disposed within the fixed portion; anda joining portion, comprising: an actuating member, for combining with the moving portion; and a plurality of joining members, with one end extendably joining to the fixed portion and with the other end joining to the actuating member.

22. The axially actuating device as claimed in claim 21, wherein the axially actuating device is an axially actuating device for a miniature voice coil motor.

23. The axially actuating device as claimed in claim 21, wherein the permanent magnet is made of a material with a remanent magnetic flux density.

24. The axially actuating device as claimed in claim 21, wherein the fixed portion further comprises a first support, and the permanent magnet is disposed on an inner side of the first support.

25. The axially actuating device as claimed in claim 21, wherein the moving portion further comprises a second support, and the coil group is wound on the second support.

26. The axially actuating device as claimed in claim 25, wherein the second support is a housing having a central round hole and having a wing plate extended from each external end.

27. The axially actuating device as claimed in claim 25, wherein the second support further carries a lens.

28. The axially actuating device as claimed in claim 25, wherein the second support is made of a plastic material.

29. The axially actuating device as claimed in claim 25, wherein the second support is made of a metal material.

30. The axially actuating device as claimed in claim 21, wherein the joining portion is made of a non-metallic composite material.

31. The axially actuating device as claimed in claim 21, wherein the joining portion is made of a silica gel material.

32. The axially actuating device as claimed in claim 21, wherein the joining members are symmetrically disposed.

33. The axially actuating device as claimed in claim 21, wherein the joining portion is made of a non-metallic composite material doped with a magnetic powder.