CN213659152U

CN213659152U - Swing device, optical member drive device, and electronic apparatus

Info

Publication number: CN213659152U
Application number: CN202023007303.6U
Authority: CN
Inventors: 寺岛厚吉
Original assignee: New Shicoh Technology Co Ltd
Current assignee: New Shicoh Motor Co Ltd; New Shicoh Technology Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-07-09
Anticipated expiration: 2030-12-15

Abstract

The utility model relates to a wave device, optical component drive arrangement and electronic equipment. Wherein for the most basic unit shaking device: in a three-dimensional XYZ orthogonal coordinate system, a first member and a second member are overlapped in a Z direction, the first member is provided with a plurality of X-direction guide grooves parallel to an X-axis direction on a surface opposite to the second member, and the second member is provided with a plurality of Y-direction guide grooves parallel to a Y-axis direction on a surface opposite to the first member; and a ball fitted in both the X-direction guide groove and the Y-direction guide groove. This structure can make the thickness of the swing device, the optical member driving device, and the electronic apparatus in the Z direction thinner.

Description

Swing device, optical member drive device, and electronic apparatus

Technical Field

The utility model relates to a wave device, optical component drive arrangement and electronic equipment.

Background

As a lens driving device for driving a lens, for example, a lens driving device is known which drives the lens in XY two directions in a three-dimensional XYZ rectangular coordinate system in which the Z direction is the optical axis direction to compensate for a shake. For example, patent document 1: japanese patent document No. JP2006330678A, published as 2006, 12, 7, and patent document 2: chinese patent publication No. CN1869763A, published as 11/29/2006, describes a structure of the lens driving device for driving the lens.

In patent document 1, as a three-stage structure of the fixed body, the intermediate support body, and the movable body, a structure is provided in which the fixed body, the intermediate support body, and the movable body are overlapped in the Z direction, and a ball is disposed in a guide groove formed between the fixed body and the intermediate support body, and between the intermediate support body and the movable body, respectively, and the movable body is oscillated in the XY direction.

Conventionally, as in the above two cases, there has been a problem that the thickness in the Z direction becomes thick due to the three-stage structure of the fixed body, the intermediate support body, and the movable body.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can make the thickness of Z direction attenuate wave device, optical component drive arrangement and electronic equipment. And adopts the following technical scheme:

a rocking device includes a first member and a second member overlapped in a Z direction in a three-dimensional XYZ orthogonal coordinate system, the first member having a plurality of X-direction guide grooves parallel to an X-axis direction formed on an opposing surface opposing the second member, the second member having a plurality of Y-direction guide grooves parallel to a Y-axis direction formed on an opposing surface opposing the first member; and a ball fitted in both the X-direction guide groove and the Y-direction guide groove.

In the technical scheme, the thickness of the shaking device is only the thickness of the first part, the thickness of the second part and the height of the ball body of the unassembled part of the first part and the second part, so that the total thickness of the shaking device can be reduced while the first part and the second part are driven by the ball body to move.

Preferably, the two X-direction guide grooves are formed at equal intervals from the Z-direction center axis of the first member, and the two Y-direction guide grooves are formed at equal intervals from the Z-direction center axis of the second member.

Further, the spherical body is disposed at a position where the X-direction guide groove and the Y-direction guide groove intersect each other when viewed from the Z-direction.

Furthermore, the ball is partially embedded into the X-direction guide groove and partially embedded into the Y-direction guide groove.

A rocking device, in a three-dimensional XYZ rectangular coordinate system, having a first member and a second member overlapped in a Z direction, an X-direction support roller group provided on the first member, having two axes extending in an X direction, and rotatable about the axes, and a Y-direction support roller group provided on the second member, having two axes extending in a Y direction, and rotatable about the axes; and further has balls embedded in both the X-direction supporting roller group and the Y-direction supporting roller group.

Preferably, the four spheres are located at four vertices of a quasi-rectangle, two spheres located on the + X side in parallel with the Y direction move in one direction in the Y direction, and the remaining two spheres located on the-X side in parallel with the Y direction move in the other direction in the Y direction, so that the first member rotates about the Z axis with respect to the second member.

In the optical member driving device, the optical axis direction is a Z direction, one of the first member and the second member is a fixed body, and the other member is a movable body, and the optical member is provided on the fixed body and/or the movable body.

An electronic apparatus having the optical member driving device described above.

The beneficial effects of the utility model reside in that:

the thickness of the swing device, the optical member driving device, and the electronic apparatus in the Z direction can be made thin.

Drawings

Fig. 1 is an isometric view showing a rocking device according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view showing a portion of the rocking device according to the first embodiment of the present invention after cutting.

Fig. 3 is an isometric view of a first component of a rocking device according to a first embodiment of the present invention.

Fig. 4 is a plan view showing a rocking state in the rocking device according to the first embodiment of the present invention, in which: (a) displaying the initial position, (b) displaying the movement in the XY-synthesized direction, and (c) displaying the rotation around the Z-axis.

Fig. 5 is an exploded perspective view showing a photographic apparatus relating to the use of the swing apparatus relating to the first embodiment of the present invention.

Fig. 6 is an isometric view showing a rocking device according to a second embodiment of the present invention.

Fig. 7 is an exploded perspective view showing a cut-away portion of a rocking device according to a second embodiment of the present invention.

Fig. 8 is an isometric view showing a ball and supporting rollers used in a rocking device according to a second embodiment of the present invention.

In the figure, 10, a rocking device, 12, a first member, 14, a second member, 16, an opposite face of the first member, 18, an X-direction guide groove, 20, an opposite face of the second member, 22, a Y-direction guide groove, 24, a ball, 26, a concave portion, 28, a magnet, 30, a coil, 32, a camera, 34, an auto focus unit, 36, a base, 38, a housing, 40, a lens, 42, an incident hole, 44, an image sensor, 46, a ball disposition groove, 48, an X-direction support roller, 50, a Y-direction support roller, 52, an X-direction support shaft, 54, a Y-direction support shaft, 56, a back-side yoke, 58, a front-side yoke.

Detailed Description

The first embodiment is as follows:

fig. 1 to 3 show a rocking device 10 according to a first embodiment of the present invention. The swing device 10 includes a first member 12 and a second member 14 that are overlapped in the Z direction in a three-dimensional XYZ rectangular coordinate system.

The first member 12 and the second member 14 are formed in a square plate shape when viewed from the Z direction. The first member 12 is, for example, a movable body, and the second member 14 is a fixed body. As described later, the first member 12 swings in the X, Y direction and around the Z axis with respect to the second member 14.

The first member 12 has an opposing surface 16 opposing the second member 14, and two

X-direction guide grooves

18,18 extending parallel to the X axis and toward the X axis are formed on the opposing surface 16, for example, and the

X-direction guide grooves

18,18 have a V-shaped cross section and are formed in the vicinity of the ± Y-direction ends of the first member 12 and are arranged at equal intervals from the center of the first member 12.

The second member 14 has an opposing surface 20 opposing the first member 12, and two Y-direction guide grooves 22, for example, extending in parallel to the Y axis and toward the Y axis are formed in the opposing surface 20. The Y-

direction guide grooves

22,22 have a V-shaped cross section, are formed in the vicinity of the ± Y-direction ends of the second member 14, and are arranged at equal intervals from the center of the second member 14.

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 open, but may be closed to constitute stoppers against the movement of the balls 24 described later. The X-direction guide groove 18 and the Y-direction guide groove 22 may be provided only at positions corresponding to the respective balls 24.

Between the first part 12 and the second part 14, there are, for example, four spheres 24. The respective balls 24 are fitted into the X-direction guide grooves 18 and the Y-direction guide grooves 22 to secure a distance between the first member 12 and the second member 14. That is, one spherical body 24 is disposed at each of four positions where the X-direction guide groove 18 and the Y-direction guide groove 22 intersect when viewed from the Z-direction, and the four positions are located at four vertices of a quasi-rectangle.

In order to facilitate sliding of the balls 24, the

X-direction guide grooves

18,18 and the Y-

direction guide grooves

22,22 are preferably made of a material having a low friction coefficient, or a measure such as applying lubricating oil is adopted. Moreover, the above suggestions are also applicable to the sphere 24.

As shown in fig. 2, a recess 26 recessed in the + Z direction is formed in the center of the opposing surface 16 of the first member 12. The recess 26 cooperates with the outer shape of the first part 12 to form a square. Four magnets 28 are mounted in the recess 26. The four magnets 28 have different surface magnetic poles and are arranged circularly around the Z axis.

On the other hand, four coils 30, for example, circular coils, are arranged on the opposing surface 20 of the second member 14. The

magnets

28,28 face the coil 30 in the Z direction with a space therebetween. A magnetic plate may be disposed between the coil 30 and the opposing surface 20 of the second member 14. Each coil 30 is wound so as to straddle two adjacent magnets 28. When the coil 30 is energized, Lorentz forces in the same direction are generated in the

magnets

28, 28. When the

coils

30,30 arranged on the + -X side are energized, for example, the two

magnets

28,28 facing each other generate a thrust in the + Y direction or the-Y direction, respectively. By adjusting the amount of current to be supplied to each coil 30, the direction of current supply, and the difference therebetween, a moving thrust in the XY direction and a rotational thrust around the Z axis can be generated with respect to the first member 12.

In contrast to the above-described embodiment, the coil 30 may be provided on the first member 12 and the magnet 28 may be provided on the second member 14. Further, two balls 24 are allocated to one X-direction guide groove 18 and one Y-direction guide groove 22, respectively, but one ball 24 may be allocated to one X-direction guide groove 18 and one Y-direction guide groove 22, respectively. That is, four X-direction guide grooves 18, four Y-direction guide grooves 22, and four balls 24 may be arranged at four corners.

Subsequently, in the embodiment, the action when the first member 12 is shaken (moved in the XY direction and rotated around the Z axis) with respect to the second member 14 is explained using fig. 4.

In fig. 4, the X axis is a line connecting the centers of the two

spheres

24 and 24 of the 1X-direction guide groove 18, the Y axis is a line connecting the centers of the two

spheres

24 and 24 of the one Y-direction guide groove 22, the o indicates the initial state position of the sphere 24 before movement, and the ● indicates the position of the sphere 24 after movement.

Fig. 4(a) shows an initial state in which the front faces of the first and

second members

12, 14 coincide and the four spheres 24 are located at positions where the X axis intersects the Y axis.

Fig. 4(b) shows a state in which the movable body first member 12 is moved in the XY-synthesizing direction (upper right direction in fig. 4) with respect to the fixed body second member 14. Before explaining the XY-synthetic-direction movement, first, the movement in the X direction is explained: when sufficient lubrication is ensured, the balls 24 do not move in the V-grooves of the Y-direction guide grooves 22 of the second member 14, and in this state, they slide while rotating, and rotate in the X-direction guide grooves 18 of the first member 12. Further, if there is no lubrication, the balls 24 are stationary in the V-grooves of the Y-direction guide grooves 22 of the second member 14 and slide in the X-direction guide grooves 18 of the first member 12. Also, if the lubrication is insufficient, the device will move with the two states mixed.

The movement in the XY-synthesis direction will be described below. In fig. 4(b), the position of the Y-direction guide groove 22 of the second member 14 is not changed, but the X-direction guide groove 18 of the first member 12 moves in the XY-combining direction. If the X-direction guide groove 18 of the first member 12 is moved in the XY-combining direction, the spherical body 24 is moved in the X-direction guide groove 18 and the Y-direction guide groove 22, and is held at a position where the X-axis and the Y-axis intersect, allowing the first member 12 to move in the XY-combining direction.

Fig. 4(c) shows a situation in which the first member 12 is rotated about the Z-axis (clockwise rotation in the drawing) relative to the second member. The position of the Y-direction guide groove 22 of the second member 14 does not change, but the X-direction guide groove 18 of the first member 12 rotates around the Z-axis. If the X-direction guide groove 18 of the first member 12 rotates about the Z-axis, the spherical body 24 moves in the X-direction guide groove 18 and the Y-direction guide groove 22, and is held at a position where the X-axis and the Y-axis intersect, allowing the first member 12 to rotate about the Z-axis. At this time, two of the balls 24 located on the + X side in parallel with the Y direction move in the + Y direction, and the remaining two of the balls 24 located on the-X side in parallel with the Y direction move in the-Y direction. If the ball 24 moves in the opposite direction, the first member 12 will rotate in the opposite direction.

As described above, since the rocking device 10 relating to the first embodiment sandwiches the spherical body by the first member 12 and the second member 14, the thickness in the Z direction can be made thin. Further, it allows movement in the X-direction, Y-direction, and rotation around the Z-axis.

Fig. 5 shows an example of the optical component driving device, i.e., the camera device 32, with respect to the use of the pan device 10 relating to the first embodiment. The camera 32 is used as a small camera used for electronic equipment such as a mobile phone or a smart phone.

The camera device 32 is composed of an auto-focus assembly 34, a shaking device 10, and a base 36.

The autofocus module 34 accommodates a lens 40 in a housing 38. The housing 38 is rectangular when viewed from the optical axis direction of the lens 40, and a circular entrance hole through which light enters is formed in the upper surface of the housing 38. The lens 40 is supported by a lens support, not shown, which is moved in the optical axis direction of the lens 40 by a well-known autofocus mechanism, and adjusts the light incident from the incident hole 42 so as to focus the light on the image sensor 44 described later. The lower end of the housing 38 is fixed to the base 36 so as not to contact the first member 12 of the oscillating device 10. The second member 14 is also fixed to the base 36.

Also, in this embodiment, the Z direction is taken as the optical axis direction.

The image sensor 44 is fixed on the upper surface of the first member 12. Accordingly, the image sensor 44 is moved in the XY direction relative to the autofocus assembly 34 (i.e., the lens 40) by the rocking device 10 and rotated about the Z axis to compensate for the shake of the camera device 32.

Example two:

fig. 6 and 7 show a rocking device 10 according to a second embodiment of the present invention.

The structure of the first embodiment guides the ball 24 through the X-direction guide groove 18 and the Y-direction guide groove 22, opposite thereto, while the structure of the second embodiment guides the ball 24 through the roller.

That is, as shown in fig. 7, the balls 24 are disposed in ball disposing grooves 46 formed at four corners of the first member 12 and the second member 14, and the balls 24 disposed in the ball disposing grooves 46 are supported by an X-direction supporting roller 48 and a Y-direction supporting roller 50.

The ball placement grooves 46 extend in the X direction and the Y direction, and move the balls 24 in the X direction and the Y direction.

The X-direction support roller 48 group includes two (i.e., a pair of) X-direction support shafts 52 extending in the X direction, and 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 rotatable about the X-direction support shafts 52. On the other hand, the Y-direction support roller 50 group also has 2 two (i.e., a pair of) Y-direction support shafts 54 extending in the Y direction, and the Y-direction support shafts 54 are fixed to the second member 14 and provided on the second member 14 so as to be rotatable about the Y-direction support shafts 54.

As shown in fig. 8, the + Z side of the sphere 24 is in contact with the X-direction support roller 48 so as to be sandwiched between the two X-direction support rollers 48, and the-Z side is in contact with the Y-direction support roller 50 so as to be sandwiched between the two Y-direction support rollers 50. Therefore, if the first member 12 is moved in, for example, the X direction, the spherical body 24 does not move on the Y direction support roller 50, and at this time, the X direction support roller 48 rotates in this state, and moves on the spherical body 24 in the X direction, allowing the first member 12 to move. Further, if the first member 12 is rotated around the Z axis, the spherical body 24 rotates so as not to move on the X-direction support roller 48 and the Y-direction support roller 50, allowing the rotation of the first member 12.

A back yoke 56 having the same shape as the four magnets 28 is fixed to the back (+ Z-side) of the first member 12. The four magnets 28 are fixed to the back side yoke 56 by magnetic force. A front side yoke 58 having the same shape as the four magnets 28 is provided at the center of the second member 14, and the coil 30 is fixed to the front side yoke 58. Magnetic lines of force from the magnets 28 flow through the back-side yoke 56 and the front-side yoke 58, thereby improving magnetic efficiency. Further, since the front side yoke 58 is attracted to the magnets 28 by the magnetic force of the magnets 28, the first member 12 is attracted to the second member 14 and is held in an attracted state with respect to the second member 14. Further, when the first member 12 moves relative to the second member 14, a restoring force for returning the first member 12 to the initial position can be applied.

The rocking device 10 according to the second embodiment of the present invention is configured to sandwich the ball 24 between the

support rollers

48 and 50 provided on the first member 12 and the second member 14, thereby making the thickness in the Z direction thin. Further, the movement in the X direction and the Y direction and the rotation around the Z axis are allowed. The same reference numerals are attached to the drawings for the same portions as those of the first embodiment, and the description thereof will be omitted.

In the above two embodiments, the rocking device for adjusting the position of the lens or the image sensor is shown, but the present invention is not limited to this, and can be applied to, for example, a device for adjusting the light emitting position of the light emitting element, a device for adjusting the position of a semiconductor in a manufacturing process, or the like.

Claims

1. A rocking device characterized by:

in a three-dimensional XYZ rectangular coordinate system, a first member (12) and a second member (14) are overlapped in a Z direction, the first member (12) is provided with a plurality of X-direction guide grooves (18) parallel to an X-axis direction on a surface opposite to the second member (14), and the second member (14) is provided with a plurality of Y-direction guide grooves (22) parallel to a Y-axis direction on a surface opposite to the first member (12);

and a ball fitted in both the X-direction guide groove (18) and the Y-direction guide groove (22).

2. A rocking device as claimed in claim 1, wherein: two X-direction guide grooves (18) are formed at equal intervals from the Z-direction center axis of the first member (12), and two Y-direction guide grooves (22) are formed at equal intervals from the Z-direction center axis of the second member (14).

3. A rocking device as claimed in claim 1, wherein: the spherical body (24) is disposed 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. A rocking device as claimed in claim 1, wherein: the ball (24) is partially fitted into the X-direction guide groove (18) and partially fitted into the Y-direction guide groove (22).

5. A rocking device characterized by:

in a three-dimensional XYZ rectangular coordinate system,

comprises a first member (12) and a second member (14) overlapped in a Z direction, an X-direction support roller (48) set provided on the first member (12) and having two axes extending in an X direction and rotatable about the axes, and a Y-direction support roller (50) set provided on the second member (14) and having two axes extending in a Y direction and rotatable about the axes,

further has a spherical body (24) embedded in both the X-direction support roller (48) group and the Y-direction support roller (50) group.

6. A rocking device as claimed in any one of claims 1 to 5, wherein:

the four spheres (24) are respectively positioned on four vertexes of a quasi-rectangle, two spheres (24) positioned on the + X side in parallel to the Y direction move along one direction in the Y direction, and the other two spheres (24) positioned on the-X side in parallel to the Y direction move along the other direction in the Y direction, so that the first component (12) rotates around the Z axis relative to the second component (14).

7. An optical component driving apparatus characterized in that: the rocking device according to any one of claims 1 to 6, wherein the optical axis direction is the Z direction, one of the first member (12) and the second member (14) is a fixed body, the other is a movable body, and an optical member is provided on the fixed body and/or the movable body.

8. An electronic device, characterized in that: having an optical component driving device as claimed in claim 7.