CN114859500A

CN114859500A - Prism motor, camera device and mobile terminal

Info

Publication number: CN114859500A
Application number: CN202210681203.6A
Authority: CN
Inventors: 龚高峰; 王建华; 高睿哲
Original assignee: Shanghai BL Electronics Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-08-05
Also published as: WO2023241197A1

Abstract

The invention provides a prism motor, a camera device and a mobile terminal. Prism motor includes shell and base, and the shell cover is established on the base and is formed the accommodation space with the base, and the prism motor is still including setting up inside the accommodation space: a frame; a prism carrier; the first ball bearings are arranged in the first sliding chute structure and are respectively in movable contact with the frame and the base so as to guide the prism carrier when the prism carrier moves relative to the frame; the second ball, the second ball is a plurality of, and the frame has the second spout structure of mutually supporting respectively with the relative one side of prism carrier, and the second ball sets up in the inside of second spout structure and respectively with frame and prism carrier movable contact to lead the frame when the relative base motion of frame. The periscopic lens driving device solves the problem that the periscopic lens driving device in the prior art is poor in service performance.

Description

Prism motor, camera device and mobile terminal

Technical Field

The invention relates to the field of camera devices, in particular to a prism motor, a camera device and a mobile terminal.

Background

With the development of technology, many electronic devices (e.g., tablet computers or smart phones) are equipped with a lens module and have camera or video functions today. The lens can be roughly divided into a wide-angle lens with short focal length and a telescopic lens with long focal length; however, placing a long-focus lens in the optical module increases the thickness of the electronic device, and is difficult to meet the requirement of the mobile terminal device for light weight and thin profile. In the prior art, a periscopic design is usually adopted, i.e. the optical path is laid down and a turning mirror is added to rotate the optical path by 90 degrees, so that the whole optical system is laid down to reduce the overall height.

The existing periscopic lens driving device comprises a reflection module (a prism motor) and a lens module (a periscopic motor), wherein the reflection module reflects imaging light rays for 90 degrees and then emits the imaging light rays into the lens module, and the lens module is used for focusing and imaging. At present, some periscopic module anti-shake schemes are respectively or jointly responsible for anti-shake in two directions by reflection module and lens module, so that lens focusing and anti-shake need reflection module and lens module to cooperate to drive and complete, and the problems of large structure size, low reliability and the like caused by the large quantity of driving device parts and complex design and large difficulty in assembling and debugging of two sets of motors exist. The anti-shake scheme of some periscopic modules is responsible for alone by the reflection module, but the reflection module is not smooth enough at the in-process of motion, and then influences the formation of image effect.

Therefore, the periscopic lens driving device in the prior art has the problem of poor service performance.

Disclosure of Invention

The invention mainly aims to provide a prism motor, a camera device and a mobile terminal, and aims to solve the problem that a periscopic lens driving device in the prior art is poor in service performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a prism motor including a housing and a base, the housing being covered on the base and forming an accommodating space with the base, the prism motor further including: a frame; a prism carrier; the first ball bearings are arranged in the first sliding chute structure and are respectively in movable contact with the frame and the base so as to guide the prism carrier when the prism carrier moves relative to the frame; the second ball, the second ball is a plurality of, and the frame has the second spout structure of mutually supporting respectively with the relative one side of prism carrier, and the second ball sets up in the inside of second spout structure and respectively with frame and prism carrier movable contact to lead the frame when the relative base motion of frame.

Furthermore, the first sliding groove structure comprises a plurality of first accommodating grooves arranged on one side of the frame facing the base and a plurality of second accommodating grooves arranged on the base corresponding to the plurality of first accommodating grooves, and at least one first ball is arranged in each first accommodating groove.

Furthermore, at least one of the first accommodating grooves has a different height from the other first accommodating grooves in the Z-axis direction.

Furthermore, two ends of the frame in the X-axis direction are respectively provided with a first accommodating groove, and the two first accommodating grooves are symmetrically arranged around the frame.

Further, the frame is provided with first direction arch on the top of Z axle direction towards one side of base, the frame is provided with first direction breach in the relative first direction protruding symmetry in both sides of the bottom of Z axle direction towards one side of base, be provided with a first storage tank on first direction arch and two first direction breachs respectively, the base corresponds first direction arch and is provided with second direction breach, the base corresponds first direction breach and is provided with the second direction arch, it is provided with the second direction arch to correspond first direction breach, it is provided with the second storage tank to correspond respectively in second direction breach and the second direction arch.

Further, the distances from the two first guide notches to the first guide protrusion are equal.

Furthermore, one side of the first guide protrusion facing the second guide notch is a convex arc surface, and one side of the second guide notch facing the first guide protrusion is a concave arc surface; or one side of the first guide protrusion facing the second guide notch is a concave arc surface, and one side of the second guide notch facing the first guide protrusion is a convex arc surface.

Furthermore, two first guide notches are respectively provided with a guide inclined plane, the two guide inclined planes extend along the direction close to each other, the first accommodating grooves corresponding to the first guide notches are arranged on the guide inclined planes, the extending direction of the first accommodating grooves is the same as that of the guide inclined planes, and the connecting line of the two ends of the first accommodating grooves arranged on the first guide protrusions is parallel to the X axis.

Furthermore, the connection lines of the projections of all the first balls in the XY plane are arc lines, and the circle centers of the arc lines are coincided with the rotating shaft when the frame rotates relative to the base.

Further, the second chute structure comprises: the third accommodating groove is formed in the frame; and the fourth accommodating groove is arranged on the prism carrier corresponding to the third accommodating groove.

Furthermore, the third accommodating grooves and the fourth accommodating grooves are multiple, and the number of the third accommodating grooves is equal to that of the fourth accommodating grooves and corresponds to that of the fourth accommodating grooves one to one.

Furthermore, the frame is provided with at least one third accommodating groove at two ends in the X-axis direction, and the prism carrier is provided with at least one fourth accommodating groove at two ends in the X-axis direction.

Furthermore, a second ball is correspondingly arranged in each third accommodating groove; and/or the third accommodating groove is an arc-shaped groove; and/or the fourth accommodating groove is an arc-shaped groove.

Furthermore, the frame is provided with first guide surfaces on the side walls at two ends in the X-axis direction respectively, the prism carrier is provided with a second guide surface in sliding fit with the first guide surface, the first guide surface and the second guide surface are both arc surfaces, the third accommodating groove is arranged on the first guide surface, the fourth accommodating groove is arranged on the second guide surface, the projection of the first guide surface on a YZ plane is arc, and the projections of the first guide surface on the XY plane and the XZ plane are both straight lines.

Furthermore, the first guide surface is a convex cambered surface, and the second guide surface is a concave cambered surface; or the first guide surface is a concave arc surface, and the second guide surface is a convex arc surface.

Furthermore, the extending direction of the third accommodating groove is the same as the extending direction of the first guide surface.

Furthermore, two third accommodating grooves are formed in one of the first guide surfaces, and a third accommodating groove is formed in the other first guide surface.

Furthermore, the connection lines of the projections of all the second balls in the YZ plane are arc lines, and the circle centers of the arc lines are coincided with the rotating shaft of the prism carrier when the prism carrier rotates relative to the frame.

Further, the distances from the second balls in the two third accommodating grooves on the same first guide surface to the second balls in the third accommodating grooves on the other first guide surface are the same.

Further, the prism motor further includes: the first driving assembly comprises a first driving magnet and a first driving coil, the first driving magnet is arranged on the frame, and the first driving coil is arranged on the prism carrier; the second driving assembly comprises a second driving magnet and a second driving coil, the second driving magnet is arranged on the frame, and the second driving coil is arranged on the base; when the first driving assembly is electrified, the second sliding groove structure moves relative to the second ball, and the prism carrier rotates around the X axis relative to the frame; when the second driving assembly is electrified, the first sliding groove structure moves relative to the first ball, and the frame drives the prism carrier to rotate relative to the base around the Z axis.

Further, the prism motor further comprises an FPC board, at least one part of the FPC board is arranged on the base, at least another part of the FPC board is arranged on the prism carrier, and the part of the first driving assembly arranged on the prism carrier and the part of the second driving assembly arranged on the base are respectively connected with the FPC board.

According to another aspect of the present invention, there is provided an image pickup apparatus including the prism motor described above.

According to another aspect of the present invention, there is provided a mobile terminal including the above-described image pickup device.

By applying the technical scheme of the invention, the prism motor comprises a shell and a base, wherein the shell is covered on the base and forms an accommodating space with the base, and the prism motor also comprises a frame, a prism carrier, a first ball and a second ball which are arranged in the accommodating space. The first ball bearings are arranged in the first sliding chute structures and are respectively in movable contact with the frame and the base so as to guide the prism carrier when the prism carrier moves relative to the frame; the second ball is a plurality of, and the frame has the second spout structure of mutually supporting respectively with the relative one side of prism carrier, and the second ball sets up in the inside of second spout structure and respectively with frame and prism carrier movable contact to guide the frame when the relative base motion of frame.

When using the prism motor in this application, when the relative frame motion of prism carrier or frame drive the motion of prism carrier base relatively together, the anti-shake effect of prism motor all can be realized. Therefore, when the frame moves relative to the base, the prism motor has the first ball and the first chute structure, so that the friction force between the frame and the base can be reduced and the movement of the frame can be guided under the interaction of the first ball and the first chute structure, thereby ensuring that the frame can move along the preset direction. Likewise, when the prism carrier moves relative to the frame, through the interaction of the second ball and the second sliding groove structure, the friction force between the frame and the prism carrier can be reduced, and the movement of the prism carrier can be guided, so that the prism carrier can move along the preset direction. Therefore, through setting up first ball, second ball, first spout structure and second spout structure can guarantee that the prism motor is more smooth and easy at the in-process motion that realizes the anti-shake effect to guarantee camera device's formation of image effect. Therefore, the prism motor in the application effectively solves the problem that the periscopic lens driving device in the prior art is poor in service performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows an exploded view of a prism motor according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating the position of the frame, base and first drive assembly of the prism motor in one embodiment of the present application;

FIG. 3 shows a schematic view of the internal structure of a prism motor in one embodiment of the present application;

FIG. 4 is a schematic view of the prism motor frame, prism carrier and second drive assembly in one embodiment of the present application;

FIG. 5 is a schematic view showing the positional relationship of the frame of the prism motor and the prism carrier in one embodiment of the present application;

FIG. 6 shows a schematic view of a prism carrier of a prism motor in a specific embodiment of the present application;

FIG. 7 is a schematic diagram illustrating the position of the base of the prism motor and the first ball in an exemplary embodiment of the present application;

FIG. 8 is a schematic diagram showing the positional relationship of the FPC board, the first magnetic absorption board and the second driving coil of the prism motor in one embodiment of the present application;

FIG. 9 shows a schematic view of another angle of the prism carrier of the prism motor in a specific embodiment of the present application.

Wherein the figures include the following reference numerals:

10. a housing; 20. a base; 21. a second guide notch; 22. a second guide projection; 23. a base plate; 24. a vertical plate; 30. a frame; 31. a first guide projection; 32. a first guide notch; 321. a guide slope; 33. a first guide surface; 34. installing a convex edge; 341. installing a notch; 35. a limiting bulge; 36. avoiding the notch; 37. a first mounting groove; 38. a second mounting groove; 40. a prism carrier; 41. a second guide surface; 42. a first mounting plate; 421. mounting a rib; 422. dispensing a glue groove; 43. a second mounting plate; 431. a limiting convex rib; 432. a weight reduction groove; 50. a first ball bearing; 60. a first chute structure; 61. a first accommodating groove; 62. a second accommodating groove; 70. a second ball bearing; 80. a second chute structure; 81. a third accommodating groove; 82. a fourth accommodating groove; 90. a first drive assembly; 91. a first drive magnet; 92. a first drive coil; 100. a second drive assembly; 110. a second drive magnet; 120. a second drive coil; 200. an FPC board; 210. a fixed section; 211. a first stage; 212. a second stage; 220. a connecting section; 221. a connecting arm; 230. an active segment; 300. a prism lens; 400. a first magnetically attractive plate; 500. and a second magnetism attracting plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that periscopic lens drive arrangement performance is poor among the prior art, this application provides a prism motor, camera device and mobile terminal.

The mobile terminal of the present application includes an imaging device having a prism motor described below.

It should be noted that, the mobile terminal in the present application generally refers to a mobile phone or a notebook computer with a camera or a photographing function.

Meanwhile, it should be noted that the prism motor in the present application is mainly used together with the lens motor in the periscopic lens.

As shown in fig. 1 to 9, the prism motor of the present application includes a housing 10 and a base 20, the housing 10 is covered on the base 20 and forms an accommodating space with the base 20, and the prism motor further includes a frame 30, a prism carrier 40, a first ball 50, and a second ball 70 disposed in the accommodating space. The first ball 50 is plural, the opposite sides of the frame 30 and the base 20 are respectively provided with a first sliding chute structure 60 which is matched with each other, the first ball 50 is arranged inside the first sliding chute structure 60 and is respectively in movable contact with the frame 30 and the base 20 so as to guide the prism carrier 40 when the prism carrier 40 moves relative to the frame 30; the second balls 70 are plural, the sides of the frame 30 opposite to the prism carrier 40 are respectively provided with a second sliding slot structure 80 which is matched with each other, and the second balls 70 are arranged inside the second sliding slot structure 80 and are respectively in movable contact with the frame 30 and the prism carrier 40 so as to guide the frame 30 when the frame 30 moves relative to the base 20.

When the prism motor in the present application is used, when the prism carrier 40 moves relative to the frame 30 or the frame 30 drives the prism carrier 40 to move relative to the base 20, the anti-shake effect of the prism motor can be achieved. Therefore, when the frame 30 moves relative to the base 20, since the prism motor has the first ball 50 and the first slide groove structure 60, the friction between the frame 30 and the base 20 can be reduced and the movement of the frame 30 can be guided by the interaction of the first ball 50 and the first slide groove structure 60, thereby ensuring that the frame 30 can move in a preset direction. Also, when the prism carrier 40 moves relative to the frame 30, friction between the frame 30 and the prism carrier 40 can be reduced and movement of the prism carrier 40 can be guided by interaction of the second ball 70 and the second slide groove structure 80, thereby ensuring that the prism carrier 40 can move in a predetermined direction. Therefore, the prism motor can be ensured to move more smoothly in the process of realizing the anti-shake effect by arranging the first ball 50, the second ball 70, the first chute structure 60 and the second chute structure 80, so that the imaging effect of the camera device is ensured. Therefore, the prism motor in the application effectively solves the problem that the periscopic lens driving device in the prior art is poor in service performance.

Note that the prism carrier 40 in the present application is used to place the prism lens 300. It should also be noted that the first ball 50 and the second ball 70 may be balls having the same structure in the present application, and the distinction between the first ball 50 and the second ball 70 in the present application is merely for convenience of description. Of course, the first and

second balls

50 and 70 may be balls having different structures.

The prism motor in one particular embodiment of the present application further includes a first drive assembly 90 and a second drive assembly 100. The first drive assembly 90 includes a first drive magnet 91 and a first drive coil 92, the first drive magnet 91 being disposed on the frame 30, the first drive coil 92 being disposed on the prism carrier 40; the second driving assembly 100 includes a second driving magnet 110 and a second driving coil 120, the second driving magnet 110 is disposed on the frame 30, and the second driving coil 120 is disposed on the base 20; when the first driving assembly 90 is powered on, the second sliding chute structure 80 moves relative to the second ball 70, and the prism carrier 40 rotates relative to the frame 30 around the X-axis; when the second driving assembly 100 is powered on, the first sliding slot structure 60 moves relative to the first ball 50, and the frame 30 drives the prism carrier 40 to rotate about the Z-axis relative to the base 20. And, the prism motor further includes an FPC board 200, at least a portion of the FPC board 200 is disposed on the base 20, at least another portion of the FPC board 200 is disposed on the prism carrier 40, and a portion of the first driving assembly 90 disposed on the prism carrier 40 and a portion of the second driving assembly 100 disposed on the base 20 are connected to the FPC board 200, respectively. Specifically, the first driving coil 92 and the second driving coil 120 are respectively disposed on the FPC board 200 and electrically connected to the FPC board 200. It should be noted that, in the present application, the FPC board 200 is provided not only for electrically connecting the first driving assembly 90 and the second driving assembly 100, but also for connecting and limiting the prism carrier 40 by providing the FPC board 200, so as to ensure that the prism carrier 40 does not depart from the preset movement track during the movement process relative to the frame 30, and further ensure the stability of the prism motor.

Further, it should be noted that in the present embodiment, the prism carrier 40 and the frame 30 are only contacted by the second balls 70, or the prism carrier 40 and the frame 30 are respectively contacted by the second balls 70, and no contact is generated between the prism carrier 40 and the frame 30. Through the arrangement, the friction force between the prism carrier 40 and the frame 30 can be effectively reduced, and the service performance and the service life of the prism motor can be improved.

Preferably, the FPC board 200 includes a fixed section 210, a connection section 220, and a movable section 230 connected in sequence, the fixed section 210 being disposed on the base 20, and the movable section 230 being disposed on the prism carrier 40. And, the connecting section 220 includes at least one connecting arm 221, both ends of the connecting arm 221 are respectively connected with the fixed section 210 and the movable section 230, and the frame 30 has an avoiding notch 36 corresponding to the connecting arm 221. And, the fixed section 210 includes a first section 211 and a second section 212 connected in sequence, one end of the second section 212 far from the first section 211 is connected with the connecting section 220, the portion of the second driving assembly 100 disposed on the base 20 is connected with the second section 212, and one end of the first section 211 far from the second section 212 extends out of the housing 10 and has a plurality of terminal pins.

In one embodiment of the present application, there are 12 terminal pins, and in the present application, a first position detection chip is disposed corresponding to the first driving assembly 90, a second position detection chip is disposed corresponding to the second driving assembly 100, and the first position detection chip is electrically connected to 4 terminal pins, the second position detection chip is electrically connected to 4 terminal pins, the first driving coil 92 is electrically connected to two terminal pins, and the second driving coil 120 is electrically connected to two terminal pins. Preferably, in the present embodiment, the second driving coil 120 includes two coils arranged in series, and the second driving magnet 110 includes four magnets arranged in parallel and adjacent magnets have different magnetic poles. This is because the frame 30 will move the prism carrier 40 with it during the movement relative to the base 20, and thus requires a larger driving force.

Specifically, the prism motor further includes a first magnetism absorption plate 400 and a second magnetism absorption plate 500, the first magnetism absorption plate 400 is arranged on the FPC board 200 corresponding to the first driving magnet 91, and the first magnetism absorption plate 400 and the first driving coil 92 are respectively located on two sides of the FPC board 200; the second magnetism attracting plate 500 is disposed on the FPC board 200 corresponding to the second driving magnets 110, and the second magnetism attracting plate 500 and the second driving coil 120 are respectively located at both sides of the FPC board 200. The frame 30 and the prism carrier 40 are in a stable state of mutual stress by arranging the first magnetism absorbing plate 400 to be absorbed to the first driving magnet 91 facing each other. The second magnetic attraction plate 500 is attracted to the second driving magnet 110 facing thereto, so that the frame 30 is attracted to one side surface of the base 20, and the frame 30 is in a stressed stable state. It is emphasized that the prism carrier 40 and the frame 30 are firmly held by the first and second

magnetism absorbing plates

400 and 500. Here, the first magnetic absorption plate 400 and the second magnetic absorption plate 500 also have the effects of locking a magnetic field, preventing magnetic leakage, and increasing thrust.

In the present invention, when both the first drive coil 92 and the second drive coil 120 are not energized, the frame 30 can be in a floating, intermediate position by the first magnetic attraction plate 400, the first drive magnet 91, the second magnetic attraction plate 500, and the second drive magnet 110.

Optionally, the prism carrier 40 includes a first mounting plate 42 and two second mounting plates 43 symmetrically disposed on two sides of the first mounting plate 42, the first mounting plate 42 is disposed opposite to the frame 30, the second mounting plates 43 are disposed on a side of the first mounting plate 42 away from the frame 30, and opposite surfaces of the two second mounting plates 43 are respectively provided with at least one limiting protrusion 431 and at least one weight-reducing groove 432. The first mounting plate 42 is provided with mounting ribs 421 near both ends of the two second mounting plates 43, respectively, and a glue dispensing groove 422 is provided between the two mounting ribs 421. In the present embodiment, the purpose of providing the stopper rib 431 and the dispensing groove 422 is to ensure the stability of the prism lens mounted on the prism carrier 40. In addition, since the glue dispensing groove 422 is filled with glue, the stable connection between the prism lens and the prism carrier 40 is ensured, and the prism lens does not fall off after the prism motor is impacted. The weight-reducing grooves 432 are provided to effectively reduce the weight of the prism carrier 40, so that the prism carrier 40 can be moved relative to the frame 30 more easily.

In the present application, by setting the angular twist rotation of the prism carrier 40 around the X axis, the possibility of the prism lens moving and adjusting the position of the Y/Z axis plane is realized, that is, the OIS anti-shake correction on the Y/Z axis plane is realized. It should be noted that, since one side of the prism carrier 40 and the movable section 230 of the FPC board 200 are closely adhered to each other in a plane, when the prism carrier 40 assembly moves, a portion of the connection section 220 and the movable section 230 of the FPC board 200 assembly move together as a mover following the prism carrier 40 assembly. A part of the connection section 220 and the movable section 230 of the FPC board 200 serve as components of the mover, and the avoidance space during movement of the FPC board is fully considered in design, so that the FPC board is prevented from touching other components during movement. The frame 30 is rotated around the Z axis by twisting, so that the prism lens can be adjusted in the X/Y plane, i.e. the OIS anti-shake correction on the X/Y plane is realized.

Optionally, the first sliding slot structure 60 includes a plurality of first receiving slots 61 disposed on one side of the frame 30 facing the base 20 and a plurality of second receiving slots 62 disposed on the base 20 corresponding to the plurality of first receiving slots 61, and at least one first ball 50 is disposed in each first receiving slot 61. In addition, at least one first receiving groove 61 of the plurality of first receiving grooves 61 has a different height from the other first receiving grooves 61 in the Z-axis direction. Meanwhile, two ends of the frame 30 in the X-axis direction are respectively provided with a first receiving groove 61, and the two first receiving grooves 61 are symmetrically arranged with respect to the frame 30.

In one embodiment of the present application, the base 20 includes a bottom plate 23 and a vertical plate 24, and the vertical plate 24 is perpendicular to the bottom plate 23 and is connected to an edge of the bottom plate 23. Also, in this embodiment, the riser 24 is parallel to the XZ plane, and the base plate 23 is parallel to the XY plane. One side of the frame 30 facing the vertical plate 24 of the base 20 is provided with a first guide protrusion 31 on the top end in the Z-axis direction, one side of the frame 30 facing the vertical plate 24 of the base 20 is symmetrically provided with first guide notches 32 on two sides of the bottom end in the Z-axis direction relative to the first guide protrusion 31, the first guide protrusion 31 and the two first guide notches 32 are respectively provided with a first accommodating groove 61, the base 20 is provided with a second guide notch 21 corresponding to the first guide protrusion 31, the base 20 is provided with a second guide protrusion 22 corresponding to the first guide notch 32, and the second guide notch 21 and the second guide protrusion 22 are respectively and correspondingly provided with a second accommodating groove 62. Preferably, the two first guide notches 32 are equidistant from the first guide projection 31. That is, in the present embodiment, the first guiding notch 32 is disposed at an end of the vertical plate 24 far away from the bottom plate 23, and the second guiding protrusion 22 is disposed at a connection point of the vertical plate 24 and the bottom plate 23. By such arrangement, when the frame 30 rotates around the Z-axis relative to the base 20, the stability of the frame 30 during the rotation process can be ensured by the mutual matching of the first guide protrusion 31 and the second guide notch 21, and the rotation of the frame 30 can be guided by the mutual matching of the first guide notch 32 and the second guide protrusion 22, of course, the matching of the first guide protrusion 31 and the second guide notch 21 can also guide the frame 30. And since the frame 30 can swing back and forth relative to the base 20, the two first guide notches 32 are symmetrically arranged on two sides of the first guide protrusion 31, so that the frame 30 can be guided when swinging in different directions.

Optionally, a side of the first guide protrusion 31 facing the second guide notch 21 is a convex arc surface, and a side of the second guide notch 21 facing the first guide protrusion 31 is a concave arc surface. Or the side of the first guide protrusion 31 facing the second guide notch 21 is a concave arc surface, and the side of the second guide notch 21 facing the first guide protrusion 31 is a convex arc surface. In an embodiment of the present application, a side of the first guide protrusion 31 facing the second guide notch 21 is a convex arc surface, a side of the second guide notch 21 facing the first guide protrusion 31 is a concave arc surface, and an extending direction of the opening of the first receiving groove 61 is the same as an extending direction of the convex arc surface, and an extending direction of the second receiving groove 62 is the same as an extending direction of the concave arc surface. This ensures that the frame 30 can swing more smoothly with respect to the base 20.

Optionally, the two first guide notches 32 are respectively provided with a guide inclined surface 321, the two guide inclined surfaces 321 extend along a direction approaching each other, the first receiving groove 61 corresponding to the first guide notch 32 is disposed on the guide inclined surface 321, the extending direction of the first receiving groove 61 is the same as that of the guide inclined surface 321, and a connecting line disposed at two ends of the first receiving groove 61 of the first guide protrusion 31 is parallel to the X axis. This arrangement is advantageous in ensuring stability of the frame 30 during swinging.

Preferably, all the first balls 50 are connected by an arc in the XY plane, and the center of the arc coincides with the rotation axis of the frame 30 when rotating relative to the base 20. By such arrangement, the stability of the support of the first rolling ball 50 can be ensured, so as to ensure the stability between the frame 30 and the base 20 and ensure that the swing of the frame 30 is smoother.

In the present application, the direction of the force generated by the second drive assembly 100 on the frame 30 is parallel to the X-axis. In this embodiment, due to the cooperation of the first guiding protrusion 31 and the second guiding notch 21, the first guiding notch 32 and the second guiding protrusion 22, and the action of the FPC board 200, the frame 30 does not move along the X axis but swings around the Z axis while driving the prism carrier 40 to move together relative to the base 20. That is, in the present application, the prism carrier 40 moves relative to the frame 30 in a swinging manner and the frame 30 moves relative to the base 20 in a swinging manner.

After the current is applied to the second driving coil 120, the second driving magnet 110 and the second driving coil 120 located at the back of the frame 30 interact with each other to generate an electromagnetic driving force perpendicular to the second driving magnet 110. At this time, since the first balls 50 are disposed in the first receiving grooves 61, the frame 30 and the prism carrier 40 can be smoothly rotated in a twist manner on the X/Y axis plane by using the characteristics of the balls.

In this case, the base 20 serves as a stator, and the frame 30 and the prism carrier 40 serve as movers. Both side portions of the frame 30 having the first balls 50 at the bottom of the back surface are formed in an arc shape. Three first balls 50 as sliding media are arranged on the arc in a certain position relation, two first balls 50 are respectively arranged on two sides of the bottom of the frame 30, and the third ball is positioned at the center of the top of the back of the frame 30. The distance between the two first balls 50 at the bottom edge and the first balls 50 at the top edge is preferably set to be equal, i.e. the balls are arranged in an isosceles triangle. The main purpose of this arrangement is to maintain the stable operation state of the frame 30 when the frame 30 rotates around the Z axis along the X/Y axis plane after the frame 30 is stressed, wherein the first balls 50 are supported by the back three positions at equal intervals. The rotation center position is constant regardless of the power-on state, and does not shift with the rotational movement of the frame 30 in the X/Y axis plane. The frame 30 starts to rotate in a clockwise or counterclockwise direction at a certain angle around the basic axis of rotation, i.e., a Z axis located at the center of rotation, by the electromagnetic force generated by the switching of the polarity of the current applied to the second driving coil 120 and the change of the intensity of the applied current. And due to the position sensing feedback mechanism of the second position detection chip, the rotation angle of the prism carrier 40 can be well controlled to reach the ideal target stop position. Therefore, by controlling the rotation angle of the frame 30, the prism carrier 40 is twisted and rotated, and the prism lens has the capability of OIS anti-shake correction of the X/Y axis plane.

Specifically, the second chute structure 80 includes a third receiving groove 81 and a fourth receiving groove 82. The third receiving groove 81 is provided on the frame 30; the fourth receiving groove 82 is disposed on the prism carrier 40 corresponding to the third receiving groove 81. That is to say, in this application, the space for accommodating the second ball 70 can be formed by the mutual cooperation of the third accommodating groove 81 and the fourth accommodating groove 82, so that the limiting effect can be exerted on the second ball 70, and the limiting and guiding effects on the prism carrier 40 can be further realized.

Optionally, the number of the third receiving grooves 81 and the number of the fourth receiving grooves 82 are multiple, and the number of the third receiving grooves 81 is equal to that of the fourth receiving grooves 82, and the third receiving grooves 81 correspond to the fourth receiving grooves 82 one by one. The frame 30 is provided with at least one third receiving groove 81 at each end in the X-axis direction, and the prism carrier 40 is provided with at least one fourth receiving groove 82 at each end in the X-axis direction.

Optionally, one second ball 70 is correspondingly disposed in each third receiving groove 81. The object of this is to reduce the overall weight of the prism motor as low as possible. Of course, the number of the second balls 70 in the third receiving groove 81 may be increased according to actual use requirements.

Optionally, the third receiving groove 81 is an arc-shaped groove.

Optionally, the fourth receiving groove 82 is an arc-shaped groove.

Preferably, the third receiving groove 81 and the fourth receiving groove 82 are both arc-shaped grooves.

In an embodiment of the present application, the frame 30 has first guide surfaces 33 on side walls of both ends in the X-axis direction, the prism carrier 40 has second guide surfaces 41 slidably engaged with the first guide surfaces 33, the first guide surfaces 33 and the second guide surfaces 41 are both arc surfaces, the third receiving groove 81 is disposed on the first guide surface 33, the fourth receiving groove 82 is disposed on the second guide surface 41, projections of the first guide surfaces 33 on the YZ plane are arc shapes, and projections of the first guide surfaces 33 on the XY plane and the XZ plane are both straight lines. Moreover, two third receiving grooves 81 are disposed on one of the first guide surfaces 33, and the two third receiving grooves 81 are disposed at two ends of the first guide surface 33 in the length direction respectively. A third receiving groove 81 is formed in the other first guide surface 33, and the third receiving groove 81 is formed in the middle of the first guide surface 33. Preferably, the extending direction of the third receiving groove 81 is the same as the extending direction of the first guide surface 33. By such an arrangement, the moving direction of the prism carrier 40 can be defined by the extending direction of the first receiving groove 61, thereby ensuring the normal operation of the prism motor.

Also in the present embodiment, the first guide surface 33 is a concave arc surface, and the second guide surface 41 is a convex arc surface. That is, in the present application, the first guide surface 33 and the second guide surface 41 are different in unevenness so that the first guide surface 33 and the second guide surface 41 can be engaged with each other.

Optionally, the frame has mounting convex edges 34 on the side walls of the two ends in the X-axis direction, the mounting convex edges 34 are provided with mounting notches 341 corresponding to the prism carrier, and the surface of the mounting notches 341 facing the prism carrier has a first guide surface.

Preferably, the distances from the second balls 70 in the two third receiving grooves 81 on the same first guide surface 33 to the second balls 70 in the third receiving grooves 81 on the other first guide surface 33 are the same. Furthermore, all the second balls 70 have arc lines as their projected lines in the YZ plane, and the center of the arc line coincides with the rotation axis of the prism carrier 40 when rotating relative to the frame 30. By such an arrangement, the stability of the support of the second balls 70 can be ensured, so that the stability between the frame 30 and the prism carrier 40 can be ensured, and the smooth swing of the prism carrier 40 can be ensured.

Of course, the first guide surface 33 may be a convex arc surface and the second guide surface 41 may be a concave arc surface according to design requirements.

Specifically, the direction of the force generated by the first driving assembly 90 on the prism carrier 40 is perpendicular to the surface of the side where the frame 30 and the prism carrier 40 approach each other. It should be noted that although the direction of the acting force generated by the first driving assembly 90 on the prism carrier 40 is perpendicular to the surface of the side where the frame 30 and the prism carrier 40 approach each other, when the prism carrier 40 moves relative to the frame 30, the direction of the moving direction of the prism carrier 40 is different from the direction of the acting force generated by the first driving assembly 90, and this phenomenon occurs because the prism carrier 40 moves along the first guide surface 33 due to the limiting effect of the FPC board 200 on the prism carrier 40, and further the prism carrier 40 moves relative to the frame 30 around the X axis. Therefore, the sliding fit of the first guide surface 33 and the second guide surface 41 in this embodiment is mainly to achieve that the prism carrier 40 can move in a preset direction relative to the frame 30.

When a current is applied to the first driving coil 92, the first driving magnet 91 and the first driving coil 92 located on the front surface of the frame 30 interact with each other to generate an electromagnetic driving force perpendicular to the first driving magnet 91. At this time, since the balls are provided on both sides of the front surface of the frame 30, the carrier can be smoothly twisted and rotated on the Y/Z axis plane with respect to the frame 30 by using the characteristics of the balls.

In this case, the frame 30 is provided in an arc slope shape of a circular arc as the stationary member with the first guide surface 33. Three second balls 70 are used as sliding media and must be arranged on the arc slope according to a certain position relationship, and two second balls 70 are arranged on one side of the frame 30, wherein one ball is located at the top slope position of the arc slope, and the other ball is located at the bottom slope position of the arc slope. And the two second balls 70 are preferably equidistant from the second ball 70 on the other side of the frame 30, i.e. they are arranged in an isosceles triangle. The main purpose of this arrangement is to maintain the prism carrier 40 in a stable operating state supported by the bottom three balls at equal intervals when the prism carrier 40 rotates around the X axis along the plane of the Y/Z axis after the prism carrier 40 is stressed. The rotation center, i.e., the rotation base axis position, is constant regardless of whether the power is applied, and does not shift or change with the rotational movement of the prism carrier 40 in the Y/Z axis plane. By applying a positive-negative switching pattern of current to the first driving coil 92 and applying a change in the intensity of the current, the generated electromagnetic force causes the prism carrier 40 to start to perform a twisting rotation at a certain angle in a clockwise or counterclockwise direction around the base axis of rotation, i.e., an X axis located at the center of rotation. And due to a position sensing feedback mechanism of the first position detection chip, the rotation angle of the carrier can be well controlled so as to enable the rotation angle to reach an ideal target stop position. Therefore, by controlling the rotation angle of the prism carrier 40, the prism lens mounted on the prism carrier 40 has the ability of OIS anti-shake correction in the Y/Z axis plane.

Specifically, the frame 30 is provided with a first mounting groove 37 on a surface between side walls at both ends in the X-axis direction, and the first drive magnet 91 of the first drive assembly 90 is accommodated in the first mounting groove 37. By this arrangement, not only the prism carrier 40 can be prevented from coming into contact with the first driving magnet 91 during the movement relative to the frame 30, but also the internal space of the prism motor can be effectively utilized, which is more advantageous for the compact design of the prism motor.

Optionally, the side of the frame 30 facing the vertical plate 24 has a second mounting groove 38, and the second driving magnet 110 in the second driving assembly 100 is accommodated in the second mounting groove 38 in this embodiment, thereby facilitating the miniaturization design of the prism motor.

Optionally, at least one limiting protrusion 35 is disposed at least one corner of the frame 30 corresponding to one side of the vertical plate 24. The limiting protrusion 35 can limit the movement of the frame 30 when the frame 30 moves relative to the base 20.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem that the periscopic lens driving device in the prior art is poor in service performance is effectively solved;

2. the structure is compact and the occupied space is small.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The prism motor is characterized by comprising a shell (10) and a base (20), wherein the shell (10) covers the base (20) and forms an accommodating space with the base (20), and the prism motor further comprises a motor body, wherein the motor body is arranged in the accommodating space:

a frame (30);

a prism carrier (40);

a plurality of first balls (50), wherein one side of the frame (30) opposite to the base (20) is respectively provided with a first sliding groove structure (60) which is matched with the first ball, and the first balls (50) are arranged inside the first sliding groove structure (60) and are respectively in movable contact with the frame (30) and the base (20) so as to guide the prism carrier (40) when the prism carrier (40) moves relative to the frame (30);

the side, opposite to the prism carrier (40), of the frame (30) is provided with a second sliding groove structure (80) which is matched with the prism carrier (40), and the second ball (70) is arranged inside the second sliding groove structure (80) and is in movable contact with the frame (30) and the prism carrier (40) respectively so as to guide the frame (30) when the frame (30) moves relative to the base (20).

2. The prism motor according to claim 1, wherein the first sliding slot structure (60) comprises a plurality of first receiving slots (61) disposed on a side of the frame (30) facing the base (20) and a plurality of second receiving slots (62) disposed on the base (20) corresponding to the plurality of first receiving slots (61), and at least one first ball (50) is disposed in each first receiving slot (61).

3. The prism motor according to claim 2, wherein at least one of the first receiving grooves (61) among the plurality of first receiving grooves (61) has a different height from the other first receiving grooves (61) in the Z-axis direction.

4. The prism motor according to claim 2, wherein the frame (30) is provided with one first receiving groove (61) at each of both ends in the X-axis direction, and the two first receiving grooves (61) are symmetrically disposed with respect to the frame (30).

5. The prism motor according to claim 2, wherein a top end of a side of the frame (30) facing the base (20) in a Z-axis direction is provided with a first guide protrusion (31), two sides of the bottom end of one side of the frame (30) facing the base (20) in the Z-axis direction are symmetrically provided with first guide notches (32) relative to the first guide bulge (31), the first guide bulge (31) and the two first guide notches (32) are respectively provided with a first containing groove (61), the base (20) is provided with a second guide notch (21) corresponding to the first guide bulge (31), the base (20) is provided with a second guide bulge (22) corresponding to the first guide notch (32), the second guide notch (21) and the second guide protrusion (22) are respectively provided with a second accommodating groove (62) correspondingly.

6. The prism motor according to claim 5, wherein the two first guide notches (32) are equidistant from the first guide protrusion (31).

7. The prism motor according to claim 5,

one side of the first guide protrusion (31) facing the second guide notch (21) is a convex arc surface, and one side of the second guide notch (21) facing the first guide protrusion (31) is a concave arc surface; or

One side of the first guide protrusion (31) facing the second guide notch (21) is a concave arc surface, and one side of the second guide notch (21) facing the first guide protrusion (31) is a convex arc surface.

8. The prism motor according to claim 5, wherein two of the first guide notches (32) have guide slopes (321) thereon, the two guide slopes (321) extend in a direction approaching each other, the first receiving groove (61) corresponding to the first guide notch (32) is disposed on the guide slopes (321) and extends in the same direction as the guide slopes (321), and a line connecting both ends of the first receiving groove (61) disposed on the first guide protrusion (31) is parallel to the X-axis.

9. The prism motor according to claim 5, wherein the projection of all the first balls (50) on the XY plane is connected to form an arc, and the center of the arc coincides with the rotation axis of the frame (30) when rotating with respect to the base (20).

10. The prism motor according to any one of claims 1 to 9, wherein the second chute structure (80) comprises:

a third receiving groove (81), the third receiving groove (81) being provided on the frame (30);

the fourth accommodating groove (82) is formed in the prism carrier (40) and corresponds to the third accommodating groove (81).

11. The prism motor according to claim 10, wherein the number of the third receiving grooves (81) and the number of the fourth receiving grooves (82) are equal and correspond to each other.

12. The prism motor according to claim 11, wherein the frame (30) is provided with at least one third receiving groove (81) at both ends in the X-axis direction, respectively, and the prism carrier (40) is provided with at least one fourth receiving groove (82) at both ends in the X-axis direction, respectively.

13. The prism motor according to claim 11,

each third accommodating groove (81) is internally and correspondingly provided with one second ball (70); and/or

The third accommodating groove (81) is an arc-shaped groove; and/or

The fourth accommodating groove (82) is an arc-shaped groove.

14. The prism motor according to claim 12, wherein the frame (30) has first guide surfaces (33) on side walls at both ends in the X-axis direction, the prism carrier (40) has second guide surfaces (41) slidably engaged with the first guide surfaces (33), the first guide surfaces (33) and the second guide surfaces (41) are arc-shaped surfaces, the third receiving groove (81) is provided on the first guide surfaces (33), the fourth receiving groove (82) is provided on the second guide surfaces (41), a projection of the first guide surfaces (33) on the YZ plane is arc-shaped, and projections of the first guide surfaces (33) on the XY plane and the XZ plane are straight lines.

15. The prism motor according to claim 14,

the first guide surface (33) is a convex arc surface, and the second guide surface (41) is a concave arc surface; or

The first guide surface (33) is a concave arc surface, and the second guide surface (41) is a convex arc surface.

16. The prism motor according to claim 14, wherein the third receiving groove (81) extends in the same direction as the first guide surface (33).

17. The prism motor according to claim 14, wherein two third receiving grooves (81) are provided on one of the first guide surfaces (33), and one third receiving groove (81) is provided on the other of the first guide surfaces (33).

18. The prism motor according to claim 17, wherein all the second balls (70) have projections in YZ-planes that are connected by an arc having a center coinciding with a rotation axis of the prism carrier (40) when rotated relative to the frame (30).

19. The prism motor according to claim 18, wherein the second balls (70) in two of the third receiving grooves (81) on the same first guide surface (33) have the same distance to the second balls (70) in the third receiving grooves (81) on the other first guide surface (33).

20. The prism motor according to any one of claims 1 to 9, further comprising:

a first drive assembly (90), the first drive assembly (90) comprising a first drive magnet (91) and a first drive coil (92), the first drive magnet (91) being disposed on the frame (30), the first drive coil (92) being disposed on the prism carrier (40);

a second drive assembly (100), the second drive assembly (100) comprising a second drive magnet (110) and a second drive coil (120), the second drive magnet (110) being disposed on the frame (30), the second drive coil (120) being disposed on the base (20);

when the first driving assembly (90) is electrified, the second sliding chute structure (80) moves relative to the second ball (70), and the prism carrier (40) rotates around an X axis relative to the frame (30);

when the second driving assembly (100) is powered on, the first sliding chute structure (60) moves relative to the first ball (50), and the frame (30) drives the prism carrier (40) to rotate around the Z axis relative to the base (20).

21. The prism motor according to claim 20, further comprising an FPC board (200), wherein at least a portion of the FPC board (200) is disposed on the base (20), at least another portion of the FPC board (200) is disposed on the prism carrier (40), and a portion of the first driving assembly (90) disposed on the prism carrier (40) and a portion of the second driving assembly (100) disposed on the base (20) are connected to the FPC board (200), respectively.

22. An image pickup apparatus comprising the prism motor according to any one of claims 1 to 21.

23. A mobile terminal characterized by comprising the camera device according to claim 22.