TWM478170U - Vibration reduction structure of lens driving apparatus - Google Patents

Description

Vibration suppression structure of lens driving device

This creation relates to a vibration suppression structure of a lens driving device.

Due to the breakthrough and advancement of technology, the pixels of a smart camera phone are greatly improved by each person. However, when using high-pixel dynamic shooting, high-definition photos often appear, causing users to feel wisdom. The type of mobile phone camera is troublesome. There are two main reasons for this: the focusing device operates with structural vibration, which makes it impossible to focus successfully (the dynamic response time is too long); and it occurs when the phone is held or the shutter button is pressed. The mobile phone entity is shaking.

In a conventional technique, a vibration accompanying structure is disclosed for the operation of the focusing device. The conventional technical feature is mainly to directly provide a damping shock absorbing member between a movable portion and an inactive portion of the lens driving device, but When the conventional technology is used in practice, it may easily cause over-damping phenomenon to cause other problems when focusing.

An embodiment of the present invention provides a vibration suppressing structure for a lens driving device, which is applied to a lens driving device having a fixed portion and a movable portion. Vibration suppression The structure comprises a cantilever beam element and a damping element; the cantilever beam element has a first connecting end and a second connecting end, the first connecting end is directly fixed to the movable part, the second connecting end is combined with the damping element, and the damping element is disposed on the fixing part The vibration suppressing structure is disposed between the movable portion and the fixed portion, and when the movable portion performs any operation, the cantilever member and the damper member have vibrations generated by the movable portion.

The above and other advantages of the present invention are detailed below in conjunction with the following drawings, the detailed description of the embodiments, and the scope of the claims.

10‧‧‧Vibration suppression structure of lens drive unit

11‧‧‧Cantilever beam components

11a‧‧‧First connection

11b‧‧‧second connection

12‧‧‧ damping element

20‧‧‧ Fixed Department

21‧‧‧ yoke

22‧‧‧ outer yoke

23‧‧‧Base

30‧‧‧movable department

31‧‧‧Flexible suspension components

32‧‧‧Lens mount

33‧‧‧ lens

40‧‧‧Lens driver

The first figure is a schematic diagram showing an example of the present invention, illustrating a vibration suppression structure and a lens driving device.

Fig. 2A is a schematic view showing the details of the vibration suppression structure, the cantilever beam element, the damping, and the connection of the fixing portion.

Figure 2B is a schematic cross-sectional view of A in Figure 2A illustrating the relative position between the cantilever beam element, the damping element, and the fixed portion.

The third and third B diagrams are schematic diagrams illustrating two other embodiments in which the vibration suppression structure and the suspension element are fixed to the fixed portion.

The first figure is a schematic diagram showing an example of the present invention, illustrating a vibration suppression structure and a lens driving device. As shown in the first figure, the vibration suppression structure 10 of the lens driving device is applied to a lens drive provided with a fixed portion 20 and a movable portion 30. The vibration damping structure 10 includes a cantilever beam element 11 and a damping element 12. The cantilever beam element 11 has a first connecting end 11a and a second connecting end 11b. The first connecting end 11a is directly fixed to the movable part 30, the damping element 12 is coupled to the second connecting end 11b, and the damping element 12 is fixed to the fixing part 20. A yoke 21 . By providing the vibration suppression structure 10 between the movable portion 30 and the fixed portion 20, when the movable portion 30 performs any operation, the cantilever member 10 and the damper member 12 have vibrations that suppress the movement of the movable portion 30. The fixing portion 20 further includes an outer yoke 22 (not shown) and a base 23. The movable portion 30 further includes an elastic suspension member 31, a lens carrier 32, and a lens 33; wherein the first connection end 11a can be directly connected to the elastic suspension member 31 or the lens carrier 32. The outer yoke 22 and the base 23 enclose the movable portion 30 inside. The lens 33 is disposed inside the lens carrier 32, and the lens carrier 32 is coupled to the elastic suspension member 31.

In the above, the first connecting end 11a of the cantilever beam element 11 is coupled to the movable portion 30, and the movable portion 30 is coupled to the lens carrier 32. Therefore, the first connecting end 11a can be synchronized with the lens carrier 32, and The displacement and speed of the cantilever beam element 11 can be equal to the size and direction of the lens carrier 32; the second connecting end 11b of the cantilever beam element 11 is disposed on the damping element 12, and the damping element 12 is a yoke disposed on a fixing portion 20. 21, the damping element 12 is disposed between the second connecting end 11b and the yoke 21 so that the two are coupled but not actually in contact with each other, and the vibration suppressing structure 10 of the damper 12 and the cantilever beam element 11 can be Achieve the effect of suppressing vibration. For example, since the vibration suppression structure 10 is disposed between the fixed portion 20 and the movable portion 30, when the lens mount 32 carrying the lens 33 in the movable portion 30 is operated when performing continuous focusing, the cantilever member 11 is First connecting end 11a (solid The fixed end has a synchronous operation with the movable portion 30, and the displacement and speed thereof are equal to the size and direction of the lens carrier 32. The second connecting end 11b (free end) is disposed on the damping element 12, and is coupled to the damping element 12 by The yoke 21, through the interaction of the cantilever beam element 11 and the damper element 12, achieves the purpose of damping; when the focusing operation is completed, the dynamic response time generated by the movable portion 30 during focusing can be effectively alleviated.

The first connecting end 11a of the cantilever beam element 11 is directly coupled to the movable portion 30. The displacement and velocity of the cantilever beam member 11 can be equal to the size and direction of the movable portion 30, so that the maximum damping effect can be obtained; otherwise, the cantilever beam can be adjusted. When the rigidity of the element 11 is changed to an elastic body, and the displacement and speed of the cantilever beam element 11 are lower than the size of the movable portion 30, the damping effect can be reduced, thereby achieving the purpose of adjusting the damping efficiency. Therefore, the damping effect produced by the cantilever beam member 11 is changed by adjusting the rigidity of the cantilever beam member 11, for example, softer or harder. For example, when the weight of the movable portion is increased and the cantilever beam member 11 is adjusted to have a relatively rigid rigidity, the damping effect is increased to achieve an optimum slowing of the dynamic response time.

FIG. 2A is a schematic view showing an embodiment of the embodiment, illustrating a vibration suspension structure coupled to an elastic suspension member of the movable portion. As shown in FIG. 2A, in the present embodiment, the vibration suppression structure 10 is provided between the elastic suspension member 31 and the yoke 21. The first connecting end 11a of the cantilever beam member 11 is fixed at any position of the elastic suspension member 31, and the second connecting end 11b is coupled to the yoke 21 with the damping member 12. Therefore, the damper member 12 has a vibration generated by suppressing and absorbing the cantilever member 11 and the movable portion 30 (not shown).

Figure 2B is a schematic cross-sectional view of A in Figure 2, illustrating the cantilever beam element The relative position between the piece, the damping element, and the fixed portion. As shown in FIG. 2B, the second connecting end 11b of the cantilever beam member 11 is fixed to the yoke 21 by a damper member 12, wherein the second connecting end 11b and the yoke 21 are not actually directly touched. Rather, the damping element 12 is interposed between the second connecting end 11b and the yoke 21. The material of the damping element is a combination of a low rigidity and a high damping coefficient. The combination of the low rigidity and the high damping coefficient may be one of a soft spring, a soft damping rubber, and a soft rubber.

The third and third B diagrams are schematic views illustrating two other embodiments in which the vibration suppression structure and the elastic suspension member are fixed to the fixing portion. As shown in FIG. 3A, the first connecting end 11a of the cantilever beam member 11 is directly fixed to an elastic suspension member 31 of the movable portion 30, and the damping member 12 is coupled with the second connecting end 11b to the outer yoke of the fixing portion 20. Iron 22. The damping element 12 is disposed between the second connecting end 11b and the outer yoke 22. Therefore, the second connection end 11b is not directly fixed to the outer yoke 22. As shown in FIG. B, the first connecting end 11a of the cantilever beam member 11 is directly fixed to an elastic suspension member 31 of the movable portion 30, and the damping member 12 is coupled to the second connecting end 11b at a base 23 of the fixing portion 20. . The damping element 12 is disposed between the second connecting end 11b and the base 23. Therefore, the second connection end 11b is not directly fixed to the base 23.

The above is only the embodiment of the present invention, and the scope of the present implementation cannot be limited thereto. All changes and modifications made to the scope of patent application for this creation shall remain within the scope of this creation.

10‧‧‧Vibration suppression structure of lens drive unit

11‧‧‧Cantilever beam components

11a‧‧‧First connection

11b‧‧‧second connection

12‧‧‧ damping element

20‧‧‧ Fixed Department

21‧‧‧ yoke

23‧‧‧Base

30‧‧‧movable department

31‧‧‧Flexible suspension components

32‧‧‧Lens mount

33‧‧‧ lens

40‧‧‧Lens driver

Claims (13)

A vibration suppressing structure for a lens driving device is applied to a lens driving device having a movable portion and a fixing portion, the vibration suppressing structure comprising: a cantilever beam member and a damping member; the cantilever beam member has a first connecting end And a second connecting end, the first connecting end is directly fixed to the movable portion; and the damping element is coupled to the second connecting end to the fixing portion; and the vibration suppressing structure is disposed on the movable portion and the fixing portion During the operation of the movable portion, the cantilever beam member and the damper member have vibrations that are suppressed by the movable portion. The vibration suppression structure according to claim 1, wherein the fixing portion further comprises an outer yoke and a base. The vibration suppression structure of claim 2, wherein the damping element is coupled to the second connecting end to the outer yoke. The vibration suppression structure of claim 2, wherein the damping element is coupled to the outer base of the second connecting end. The vibration suppression structure of claim 1, wherein the movable portion further comprises an elastic suspension member and a lens carrier. The vibration suppression structure of claim 5, wherein the first connecting end fixes the elastic suspension element. The vibration suppression structure of claim 5, wherein the first connecting end fixes the lens carrier. The vibration suppression structure of claim 1, wherein the cantilever beam element is integrally formed. The vibration suppression structure according to claim 1, wherein the cantilever beam element The displacement and speed of the piece are equal to the size and direction of the movable part, so that the damping efficiency is maximized. The vibration suppression structure according to claim 1, wherein the rigidity of the cantilever beam element is adjusted such that the displacement and speed of the cantilever element are not equal to the size of the movable portion, thereby reducing the damping effect and adjusting the damping efficiency. purpose. The vibration suppression structure of claim 1, wherein the damping element is disposed between the second connecting end of the cantilever element and the fixing portion. The vibration suppression structure according to claim 1, wherein the damping element is made of a combination of a low rigidity and a high damping coefficient. The vibration suppression structure according to claim 9, wherein the material of the low rigidity and the high damping coefficient is selected from the group consisting of a soft spring, a soft damping rubber, and a soft rubber.