Oscillating device, optical component driving device, and electronic device

Abstract

The present invention relates to a rocking device, an optical component drive device, and an electronic device. The most basic rocking device comprises a first component and a second component overlapping in the Z direction in a three-dimensional XYZ rectangular coordinate system. The first component has a plurality of X-direction guide grooves parallel to the X-axis on its surface opposite the second component, and the second component has a plurality of Y-direction guide grooves parallel to the Y-axis on its surface opposite the first component. Furthermore, the device comprises a sphere that fits into both the X-direction guide grooves and the Y-direction guide grooves. This structure reduces the thickness of the rocking device, the optical component drive device, and the electronic device in the Z direction.

Description

Technical Field

[0001] The invention relates to a shaking device, an optical component driving device and an electronic device. Background Art

[0002] As is well known, for example, a lens driving device for driving a lens drives the lens in both the X and Y directions in a three-dimensional XYZ rectangular coordinate system with the Z direction as the optical axis to perform shake compensation. For example, Patent Document 1, Japanese Patent Document No. JP2006330678A, published on December 7, 2006, and Patent Document 2, Chinese Patent Document No. CN1869763A, published on November 29, 2006, describe the corresponding structures of the lens driving device for driving the lens.

[0003] In the above-mentioned patent document 1, a three-section structure of a fixed body, an intermediate supporting body and a movable body is overlapped in the Z direction, and a spherical structure is arranged on the guide grooves formed respectively between the fixed body and the intermediate supporting body and between the intermediate supporting body and the movable body, so that the movable body can be shaken in the XY direction.

[0004] As in the two cases mentioned above, there has always been a problem that the thickness in the Z direction becomes thicker due to the three-section structure of the fixed body, the intermediate support body, and the movable body. Summary of the Invention

[0005] The purpose of the present invention is to provide a shaking device, an optical component driving device, and an electronic device that can reduce the thickness in the Z direction. The following technical solutions are adopted:

[0006] A shaking device comprises, in a three-dimensional XYZ rectangular coordinate system, a first component and a second component overlapping in the Z direction, wherein the first component has a plurality of X-direction guide grooves parallel to the X-axis formed on a surface opposite to the second component, and the second component has a plurality of Y-direction guide grooves parallel to the Y-axis formed on a surface opposite to the first component; and further comprises a sphere embedded in both the X-direction guide grooves and the Y-direction guide grooves.

[0007] In this technical solution, since the thickness of the shaking device is only the thickness of the first component, the thickness of the second component, and the height of the sphere of the unassembled part of the first component and the second component, the total thickness of the shaking device can be reduced while the first and second components are driven to move by the sphere.

[0008] Preferably, two X-direction guide grooves are formed by the Z-direction central axis of the first component at equal intervals, and two Y-direction guide grooves are formed by the Z-direction central axis of the second component at equal intervals.

[0009] Furthermore, the sphere is arranged at a position where the X-direction guide groove and the Y-direction guide groove intersect when viewed from the Z direction.

[0010] Furthermore, the sphere is partially embedded in the X-direction guide groove and partially embedded in the Y-direction guide groove.

[0011] A shaking device comprises, in a three-dimensional XYZ rectangular coordinate system, a first component and a second component overlapping in the Z direction; an X-direction support roller group disposed on the first component and having two axes extending in the X direction and freely rotating about the axes; and a Y-direction support roller group disposed on the second component and having two axes extending in the Y direction and freely rotating about the axes; and further comprising a sphere embedded in both the X-direction support roller group and the Y-direction support roller group.

[0012] In this technical solution, since the thickness of the shaking device is only the thickness of the first component, the thickness of the second component, and the height of the sphere of the unassembled part of the first component and the second component, the total thickness of the shaking device can be reduced while the first and second components are driven to move by the sphere.

[0013] Preferably, the four spheres are respectively located at the four vertices of the quasi-rectangle, the two spheres located on the +X side parallel to the Y direction move in one direction in the Y direction, and the remaining two spheres located on the -X side parallel to the Y direction move in another direction in the Y direction, so that the first component rotates around the Z axis relative to the second component.

[0014] An optical component driving device adopts the above-mentioned shaking device, takes the optical axis direction as the Z direction, uses one of the first component and the second component as the fixed body, and uses the other component as the movable body, and sets the optical component on the fixed body and / or the movable body.

[0015] An electronic device comprises the optical component driving device.

[0016] The beneficial effects of the present invention are:

[0017] The thickness of the oscillating device, the optical component driving device, and the electronic device in the Z direction can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric view showing a shaking device according to a first embodiment of the present invention.

[0019] Figure 2 The present invention is an exploded perspective view showing a portion of a rocking device according to a first embodiment of the present invention.

[0020] Figure 3 This is an axonometric view visualizing the first component of the shaking device according to the first embodiment of the present invention.

[0021] Figure 4 1. Plan views showing the shaking state of the shaking device according to the first embodiment of the present invention, wherein: (a) shows the initial position, (b) shows the movement in the XY composite direction, and (c) shows the rotation around the Z axis.

[0022] Figure 5 It is an exploded perspective view showing a camera device using the panning device according to the first embodiment of the present invention.

[0023] Figure 6 FIG1 is an isometric view showing a shaking device according to a second embodiment of the present invention.

[0024] Figure 7 The present invention is an exploded perspective view showing a portion of a rocking device according to a second embodiment of the present invention.

[0025] Figure 8 This is an axonometric view showing a ball and supporting rollers used in a shaking device according to a second embodiment of the present invention.

[0026] In the figure, 10. shaking device, 12. first component, 14. second component, 16. opposite surface of the first component, 18. X-direction guide groove, 20. opposite surface of the second component, 22. Y-direction guide groove, 24. sphere, 26. recess, 28. magnet, 30. coil, 32. camera device, 34. autofocus component, 36. base, 38. housing, 40. lens, 42. incident hole, 44. image sensor, 46. sphere arrangement groove, 48. X-direction support roller, 50. Y-direction support roller, 52. X-direction support shaft, 54. Y-direction support shaft, 56. back side yoke, 58. front side yoke. DETAILED DESCRIPTION

[0027] Example 1:

[0028] Figures 1 to 3 The present invention is directed to an oscillating device 10 according to a first embodiment of the present invention. The oscillating device 10 includes a first member 12 and a second member 14 that overlap in the Z direction in a three-dimensional XYZ rectangular coordinate system.

[0029] The first member 12 and the second member 14 are formed into a square plate shape when viewed from the Z direction. The first member 12 is, for example, a movable member, and the second member 14 is a fixed member. Furthermore, as described later, the first member 12 swings relative to the second member 14 in the X and Y directions and around the Z axis.

[0030] The first component 12 has an opposing surface 16 that faces the second component 14. Two X-direction guide grooves 18, 18, for example, are formed on the opposing surface 16. The X-direction guide grooves 18, 18 are parallel to the X-axis and extend toward the X-axis. The X-direction guide grooves 18, 18 have a V-shaped cross-section and are formed near the ±Y-direction ends of the first component 12 and are arranged at equal distances from the center of the first component 12.

[0031] The second member 14 has a facing surface 20 that opposes the first member 12. Two Y-direction guide grooves 22, 22, for example, are formed on the facing surface 20. These grooves are parallel to and extend along the Y-axis. The Y-direction guide grooves 22, 22 have a V-shaped cross-section and are formed near the ±Y-direction ends of the second member 14. They are spaced equidistantly from the center of the second member 14.

[0032] Furthermore, the ±X-direction ends of the X-direction guide grooves 18, 18 and the ±Y-direction ends of the Y-direction guide grooves 22, 22 are each in an open state, but can also be closed to form a stopper against the movement of the balls 24 described later. Furthermore, the X-direction guide grooves 18 and the Y-direction guide grooves 22 can be provided only at the positions corresponding to the balls 24.

[0033] For example, four spheres 24 are positioned between the first component 12 and the second component 14. Each sphere 24 is embedded in the X-direction guide groove 18 and the Y-direction guide groove 22 to maintain a distance between the first component 12 and the second component 14. Specifically, a sphere 24 is positioned at each of the four locations where the X-direction guide groove 18 and the Y-direction guide groove 22 intersect when viewed from the Z direction. These four locations are located at the four vertices of a substantially rectangular shape.

[0034] At the same time, in order to facilitate the sliding of the ball 24, the X-direction guide grooves 18, 18 and the Y-direction guide grooves 22, 22 are preferably made of a material with a low friction coefficient, or lubricated.

[0035] Moreover, if Figure 2 As shown, a recess 26 is formed in the center of the facing surface 16 of the first component 12, recessed in the +Z direction. This recess 26 forms a square shape in accordance with the outer shape of the first component 12. Four magnets 28 are mounted in this recess 26. The surface magnetic poles of these four magnets 28 are mutually different and are arranged cyclically around the Z axis.

[0036] On the opposing surface 20 of the second component 14, four coils 30, for example, are arranged in a circular shape. Magnets 28, 28 face each other in the Z direction, separated by a space. A magnetic plate may also be arranged between the coils 30 and the opposing surface 20 of the second component 14. Each coil 30 is wound across two adjacent magnets 28. When current is applied to the coils 30, a Lorentz force in the same direction is generated on the magnets 28, 28. For example, when current is applied to the coils 30, 30 arranged on the ±X sides, the two opposing magnets 28, 28 generate thrust in the +Y direction or -Y direction, respectively. By adjusting the amount of current applied to each coil 30, the direction of current applied, and the difference in current applied, a translational thrust in the XY directions and a rotational thrust about the Z axis can be generated relative to the first component 12.

[0037] Furthermore, contrary to the above embodiment, the coil 30 may be provided on the first member 12 and the magnet 28 may be provided on the second member 14. Furthermore, while two spheres 24 are assigned to each X-direction guide groove 18 and each Y-direction guide groove 22, one sphere 24 may be assigned to each X-direction guide groove 18 and each Y-direction guide groove 22. In other words, four X-direction guide grooves 18, four Y-direction guide grooves 22, and four spheres 24 may be arranged at the four corners.

[0038] Then, in the embodiment described, the Figure 4 The action when the first member 12 is swung relative to the second member 14 (moved in the XY directions and rotated about the Z axis) will be described.

[0039] Moreover, in Figure 4 In the figure, the X-axis line is a line connecting the centers of the two spheres 24, 24 in one X-direction guide groove 18, and the Y-axis line is a line connecting the centers of the two spheres 24, 24 in one Y-direction guide groove 22. ○ represents the initial position of the sphere 24 before movement, and ● represents the position of the sphere 24 after movement.

[0040] Figure 4 (a) shows an initial state, in which the front faces of the first component 12 and the second component 14 coincide with each other, and the four spheres 24 are located at the intersection of the X-axis and the Y-axis.

[0041] Figure 4 (b) shows the case where the movable first member 12 is moved relative to the fixed second member 14 in the XY composite direction ( Figure 4Before explaining movement in the combined XY direction, let's first explain movement in the X direction. When lubrication is sufficient, ball 24 does not move within the V-groove of the Y-direction guide groove 22 of the second component 14. In this state, it rotates and slides, rotating in the X direction within the X-direction guide groove 18 of the first component 12. If lubrication is lacking, ball 24 remains stationary within the V-groove of the Y-direction guide groove 22 of the second component 14 while sliding in the X direction within the X-direction guide groove 18 of the first component 12. Furthermore, if lubrication is insufficient, the device moves in a mixture of the two aforementioned states.

[0042] The following describes the movement in the XY synthesis direction. Figure 4 In (b), the position of the Y-direction guide groove 22 of the second member 14 remains unchanged, but the X-direction guide groove 18 of the first member 12 moves in the XY composite direction. If the X-direction guide groove 18 of the first member 12 moves in the XY composite direction, the ball 24 moves within the X-direction guide groove 18 and the Y-direction guide groove 22, maintaining the position where the X-axis and Y-axis intersect, allowing the first member 12 to move in the XY composite direction.

[0043] Figure 4 (c) shows the situation in which the first component 12 is rotated about the Z axis relative to the second component (clockwise in the figure). The position of the Y-direction guide groove 22 of the second component 14 remains unchanged, but the X-direction guide groove 18 of the first component 12 is rotated about the Z axis. If the X-direction guide groove 18 of the first component 12 is rotated about the Z axis, the balls 24 move within the X-direction guide groove 18 and the Y-direction guide groove 22, maintaining the position where the X-axis and Y-axis intersect, allowing the first component 12 to rotate about the Z axis. At this time, the two balls 24 located on the +X side parallel to the Y direction move in the +Y direction, while the remaining two balls 24 located on the -X side parallel to the Y direction move in the -Y direction. If the balls 24 move in the opposite direction, the first component 12 will rotate in the opposite direction.

[0044] As described above, the rocking device 10 according to the first embodiment can be made thinner in the Z direction because the sphere is sandwiched between the first member 12 and the second member 14. Furthermore, it allows movement in the X and Y directions and rotation around the Z axis.

[0045] Figure 5 An example of an optical component driving device using the oscillation device 10 according to the first embodiment is shown, namely, a camera 32. The camera 32 is used as a small camera used in electronic devices such as mobile phones and smartphones.

[0046] The camera device 32 is composed of an autofocus assembly 34 , a shaking device 10 and a base 36 .

[0047] The autofocus assembly 34 houses a lens 40 within a housing 38. Housing 38 is rectangular when viewed along the optical axis of lens 40, and a circular incident aperture 42 for light entry is formed on its upper surface. Lens 40 is supported by a lens support (not shown). This lens support moves along the optical axis of lens 40 via a well-known autofocus mechanism, adjusting light entering through incident aperture 42 so that it is focused on an image sensor 44, described later. The lower end of housing 38 is fixed to base 36 so as to be non-contact with first member 12 of oscillating device 10. Furthermore, second member 14 is also fixed to base 36.

[0048] Furthermore, in this embodiment, the Z direction is used as the optical axis direction.

[0049] The image sensor 44 is fixed on the first component 12. Therefore, the image sensor 44 is moved relative to the autofocus assembly 34 (ie, the lens 40) in the X and Y directions by the shaking device 10 and rotated around the Z axis to perform shake compensation on the camera 32.

[0050] Example 2:

[0051] Figure 6 as well as Figure 7 A shaking device 10 according to a second embodiment of the present invention is shown.

[0052] The structure of the first embodiment guides the ball 24 via the X-direction guide groove 18 and the Y-direction guide groove 22 , whereas the structure of the second embodiment guides the ball 24 via rollers.

[0053] That is Figure 7 As shown, the balls 24 are arranged on ball arrangement grooves 46 formed at the four corners of the first component 12 and the second component 14 . The balls 24 arranged in the ball arrangement grooves 46 are supported by X-direction support rollers 48 and Y-direction support rollers 50 .

[0054] The ball arrangement groove 46 extends in the X direction and the Y direction, and moves the ball 24 in the X direction and the Y direction.

[0055] The X-direction support roller 48 group includes two (i.e., a pair) X-direction support shafts 52 extending in the X-direction. The X-direction support shafts 52 are fixed to the first member 12 and are provided on the first member 12 so as to be freely rotatable about the X-direction support shafts 52. Similarly, the Y-direction support roller 50 group includes two (i.e., a pair) Y-direction support shafts 54 extending in the Y-direction. The Y-direction support shafts 54 are fixed to the second member 14 and are provided on the second member 14 so as to be freely rotatable about the Y-direction support shafts 54.

[0056] like Figure 8 As shown, the +Z side of the sphere 24 contacts the X-direction support roller 48, sandwiching the sphere 24 between the two X-direction support rollers 48, while the -Z side contacts the Y-direction support roller 50, sandwiching the sphere 24 between the two Y-direction support rollers 50. Therefore, if the first component 12 is moved in the X-direction, for example, the sphere 24 does not move on the Y-direction support roller 50. In this state, the sphere 24 rotates, allowing the X-direction support roller 48 to move in the X-direction on the sphere 24, thereby allowing the first component 12 to move. Furthermore, if the first component 12 is rotated about the Z-axis, the sphere 24 rotates so that it no longer moves on the X-direction support roller 48 or the Y-direction support roller 50, thereby allowing the first component 12 to rotate.

[0057] Furthermore, a back yoke 56 with the same shape as the four magnets 28 is fixed to the back side (+Z side) of the first component 12. The four magnets 28 are fixed to this back yoke 56 by magnetic force. Furthermore, a front yoke 58 with the same shape as the four magnets 28 is provided in the center of the second component 14, and the coil 30 is fixed to this front yoke 58. Magnetic lines of force from the magnets 28 flow through the back yoke 56 and the front yoke 58, improving magnetic efficiency. Furthermore, the front yoke 58 is attracted to the magnets 28 by the magnetic force of the magnets 28, so that the first component 12 is attracted to the second component 14 and maintained in an adsorbed state relative to the second component 14. Furthermore, when the first component 12 moves relative to the second component 14, a restoring force is applied to the first component 12 to return to its initial position.

[0058] The second embodiment of the oscillation device 10 of the present invention utilizes support rollers 48 and 50 provided on the first and second members 12 and 14 to sandwich the sphere 24, thereby reducing the thickness in the Z direction. Furthermore, the device allows movement in the X and Y directions, as well as rotation about the Z axis. Components identical to those of the first embodiment are designated by the same reference numerals in the drawings, and their description will be omitted.

[0059] In the above two embodiments, a shaking device is shown for adjusting the position of a lens or an image sensor, but the present invention is not limited thereto and can also be applied to a device for adjusting the light-emitting position of a light-emitting element, adjusting the position of a semiconductor in a manufacturing process, etc.

Claims

1. A shaking device, characterized in that: In a three-dimensional XYZ rectangular coordinate system, there are a first component (12) and a second component (14) overlapping in the Z direction, wherein the first component (12) forms a plurality of X-direction guide grooves (18) on a surface opposite to the second component (14) and parallel to the X-axis direction and having a V-shaped cross section, and the second component (14) forms a plurality of Y-direction guide grooves (22) on a surface opposite to the first component (12) and parallel to the Y-axis direction and having a V-shaped cross section; Furthermore, there is a sphere embedded between the X-direction guide groove (18) and the Y-direction guide groove (22); There are four spheres (24), which are respectively located at the four vertices of the quasi-rectangle. Two of the spheres (24) located on the +X side parallel to the Y direction move in one direction in the Y direction, and the remaining two spheres (24) located on the -X side parallel to the Y direction move in another direction in the Y direction, so that the first component (12) rotates around the Z axis relative to the second component (14).

2. The shaking device according to claim 1, wherein: Two X-direction guide grooves (18) are formed by the Z-direction central axis of the first component (12) at equal intervals, and two Y-direction guide grooves (22) are formed by the Z-direction central axis of the second component (14) at equal intervals.

3. The shaking device according to claim 1, wherein: The sphere (24) is arranged at a position where the X-direction guide groove (18) and the Y-direction guide groove (22) intersect when viewed from the Z direction.

4. The shaking device according to claim 1, wherein: The sphere (24) is partially embedded in the X-direction guide groove (18) and partially embedded in the Y-direction guide groove (22).

5. A shaking device, characterized in that: In the three-dimensional XYZ rectangular coordinate system, A first component (12) and a second component (14) are overlapped in the Z direction. An X-direction support roller (48) group is provided on the first component (12) and has two axes extending in the X direction and freely rotating around the axes; and a Y-direction support roller (50) group is provided on the second component (14) and has two axes extending in the Y direction and freely rotating around the axes. Furthermore, there is a ball (24) configured on the ball configuration groove (46) and embedded between the X-direction support roller (48) group and the Y-direction support roller (50) group; There are four spheres (24), which are respectively located at the four vertices of the quasi-rectangle. Two of the spheres (24) located on the +X side parallel to the Y direction move in one direction in the Y direction, and the remaining two spheres (24) located on the -X side parallel to the Y direction move in another direction in the Y direction, so that the first component (12) rotates around the Z axis relative to the second component (14).

6. An optical component driving device, characterized in that: A shaking device according to any one of claims 1 to 5 is used, with the optical axis direction being the Z direction, one of the first component (12) and the second component (14) being the fixed body, and the other being the movable body, and optical components being arranged on the fixed body and / or the movable body.

7. An electronic device, characterized in that: The optical component driving device comprises the optical component driving device according to claim 6.

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