CN220154712U

CN220154712U - Prism driving device

Info

Publication number: CN220154712U
Application number: CN202321418397.7U
Authority: CN
Inventors: 鲍和平; 彭坤; 林聪�; 刘富泉; 吕新科
Original assignee: Henan Hozel Electronics Co Ltd
Current assignee: Henan Hozel Electronics Co Ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-12-08
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a prism driving device, which comprises a carrier, a frame, supporting balls, a first driving mechanism and a second driving mechanism, wherein the carrier is used for installing a prism and is installed in the frame, the first driving mechanism and the second driving mechanism respectively drive the carrier to move around different axes relative to the frame, supporting protrusions and supporting grooves which are matched with each other are arranged at the bottom of the carrier and the bottom of the frame, first ball installation grooves and second ball installation grooves are respectively arranged at the protruding ends of the supporting protrusions and the bottoms of the grooves of the supporting grooves, the first ball installation grooves and the second ball installation grooves are matched with each other and are used for installing supporting balls, and the supporting balls support the carrier on the frame and form fulcrums when the first driving mechanism and the second driving mechanism drive the carrier to move relative to the frame. The prism driving device is stable and smooth in the running process, and has the technical effects of long service life and excellent operation performance.

Description

Prism driving device

Technical Field

The utility model relates to the field of optics, in particular to a prism driving device.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have photographing or video recording functions. The use of these electronic devices is becoming more and more popular and is evolving towards a convenient and light-weight design that provides more options for the user. Spring prism motor is as comparatively advanced device, and the favor of consumer and complete machine manufacturer is more and more received in the market, however, spring prism motor in the current market is single-axis rotation, involves the part too much, and the mounting process is complicated, and the difficult yields of equipment is low, and the reliability is poor.

Disclosure of Invention

The utility model aims to provide a prism driving device, which mainly solves the problems that the friction force is overlarge and the driving is not labor-saving enough in the process of driving a prism by the prism driving device.

In order to solve the above-mentioned problems, according to one aspect of the present utility model, there is provided a prism driving apparatus comprising a carrier for mounting a prism and installed in a frame, support balls, a first driving mechanism and a second driving mechanism, the first driving mechanism and the second driving mechanism driving the carrier to move about different axes with respect to the frame, respectively, wherein

The bottom of carrier with the bottom of frame is equipped with supporting bulge and the supporting groove of mutually supporting, supporting bulge's protruding tip with the recess bottom of supporting the recess is equipped with first ball mounting groove and second ball mounting groove respectively, first ball mounting groove and second ball mounting groove mutually support and install supporting ball, supporting ball will the carrier support in on the frame and first actuating mechanism with second actuating mechanism drives the carrier forms the fulcrum for when the frame motion.

In one embodiment, the prism driving device further comprises a circuit board, the circuit board surrounds the rear portion and two end portions of the frame, a first driving coil and a second driving coil are arranged, the rear portion of the frame is provided with a first avoiding groove matched with the first driving coil, two end portions of the frame are provided with a second avoiding groove matched with the second driving coil, the first driving mechanism comprises the first driving coil and a first driving magnet matched with the first driving coil and arranged at the rear portion of the carrier, and the second driving mechanism comprises a second driving coil and a second driving magnet arranged at the side portion of the carrier.

In one embodiment, a first adsorption iron sheet is arranged around the supporting protrusion, a first adsorption magnet is arranged around the supporting groove, or a first adsorption magnet is arranged around the supporting protrusion, and a first adsorption iron sheet is arranged around the supporting groove, so that the combination of the frame and the carrier is enhanced through the cooperation of the first adsorption magnet and the first adsorption iron sheet.

In one embodiment, the support protrusion is disposed on the frame, the support groove is disposed on the carrier, a first adsorption iron sheet mounting groove is disposed around the support protrusion, a first adsorption magnet mounting groove is disposed around the support groove, and the first adsorption iron sheet and the first adsorption magnet are respectively and fixedly disposed in the first adsorption iron sheet mounting groove and the first adsorption magnet mounting groove.

In one embodiment, the first adsorption magnet and the first adsorption iron sheet have a ring-shaped structure and have the same size.

In one embodiment, the top end of the supporting protrusion forms a tapered structure, and the first ball mounting groove is provided at the top of the tapered structure.

In one embodiment, the support protrusion is provided at a central position of the bottom of the frame.

In one embodiment, a second adsorption iron sheet is fixedly arranged in the first adsorption magnet mounting groove, and the first adsorption magnet is arranged in the first adsorption magnet mounting groove and is attracted to the second adsorption iron sheet.

In one embodiment, the prism driving device further comprises a third adsorption iron sheet, wherein a third adsorption iron sheet mounting groove is further formed in two end portions of the frame for mounting the third adsorption iron sheet, and the third adsorption iron sheet and the second driving magnets arranged at two ends of the carrier generate attractive force so as to strengthen connection between the carrier and the frame.

In one embodiment, the third iron plate is elongated and is disposed in the third iron plate mounting groove in a vertical direction.

In one embodiment, a first magnet mounting groove is formed in the rear portion of the carrier, a second magnet mounting groove is formed in two ends of the carrier, the first driving magnet is mounted in the first magnet mounting groove, the second driving magnet is mounted in the second magnet mounting groove, and the second magnet mounting grooves at two ends are symmetrically arranged with respect to the first magnet mounting groove.

In one embodiment, a first position sensor and a second position sensor are respectively arranged in the first driving coil and the second driving coil, and the first position sensor and the second position sensor are respectively matched with the first driving magnet and the second driving magnet to detect displacement of the carrier.

In one embodiment, the inner wall of the first ball mounting groove and/or the second ball mounting groove is provided as a triangular pyramid.

In one embodiment, the prism drive device further comprises a housing mounted on the frame and forming a chamber with the carrier and a bottom of the frame, the first drive mechanism and the second drive mechanism being disposed within the chamber.

In the optical anti-shake process, the prism driving device takes the ball as a fulcrum of carrier movement, so that the friction force is smaller when the prism performs nodding and panning actions, and the driving aspect is more labor-saving, thereby being stable and smooth in the running process, and having the technical effects of long service life and excellent operation performance.

Drawings

Fig. 1-3 are different perspective exploded views of a prism drive device according to one embodiment of the present utility model.

Fig. 4 is an exploded perspective view of a carrier and its accessory mounting assembly in accordance with one embodiment of the present utility model.

Fig. 5 is an exploded perspective view of a frame and its accessory mounting assembly according to one embodiment of the present utility model.

Fig. 6 is a perspective view of a carrier according to one embodiment of the utility model.

Fig. 7 is a front view of a prism driving apparatus according to an embodiment of the present utility model.

Fig. 8 is a cross-sectional view of the prism drive of fig. 7 taken along line A-A.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, so that the objects, features and advantages of the present utility model will be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the utility model, but rather are merely illustrative of the true spirit of the utility model.

In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present utility model may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present utility model, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.

The present utility model relates generally to a prism driving apparatus that can be used in terminals such as mobile phones, tablet computers, notebook computers, and the like.

The prism driving apparatus of the present utility model generally includes a carrier, a frame, support balls, a first driving mechanism, and a second driving mechanism. The carrier is used for installing the prism and installs in the frame, and first actuating mechanism and second actuating mechanism drive carrier respectively move around different axis for the frame, wherein the bottom of carrier and the bottom of frame are equipped with the supporting bulge and the supporting groove of mutually supporting, and the protruding tip of supporting with the recess bottom of supporting the recess is equipped with first ball mounting groove and second ball mounting groove respectively, and first ball mounting groove and second ball mounting groove mutually support and install the supporting ball, and the supporting ball supports the carrier on the frame and forms the fulcrum when first actuating mechanism and second actuating mechanism drive carrier move for the frame. That is, the prism driving device of the present utility model supports the carrier on the frame through the support balls, and when the carrier (including the prism mounted on the carrier) moves around any axis (for example, when the nodding motion or the panning motion is performed), the support balls can be used as fulcrums, so that the friction force is smaller when the prism performs the nodding motion or the panning motion, and the driving is more labor-saving.

The first driving mechanism and the second driving mechanism of the present utility model may be electromagnetic driving mechanisms or piezoelectric driving mechanisms, and are not limited thereto. As an example, description will be made below with an electromagnetic drive mechanism.

Referring to fig. 1 to 8, the prism driving apparatus 100 includes a carrier 10, a frame 20, support balls 30, a first driving mechanism, and a second driving mechanism. The carrier 10 is adapted to mount a prism (not shown) and is mounted within the frame 20, and the first and second drive mechanisms each drive the carrier 10 relative to the frame 20 about different axes. Wherein the bottom of carrier 10 is equipped with support groove 11, the bottom of frame 20 is equipped with supporting bulge 21, when carrier 10 installs on frame 20, supporting bulge 21 stretches into in the support groove 11, the protruding tip of supporting bulge 21 is equipped with first ball mounting groove 211, be equipped with second ball mounting groove 111 in the support groove 11, first ball mounting groove 211 and second ball mounting groove 111 mutually support and install supporting ball 30, supporting ball 30 supports carrier 10 on frame 20 and forms the fulcrum when first actuating mechanism and second actuating mechanism drive carrier move for the frame. It should be noted that, although in the present embodiment, the supporting protrusions are disposed on the frame and the supporting grooves are disposed on the carrier, those skilled in the art will understand that in other embodiments, the supporting protrusions may be disposed on the bottom of the carrier and the supporting grooves may be disposed on the bottom of the frame.

Alternatively, the inner wall of the first ball mounting groove 211 and/or the second ball mounting groove 111 is provided in a triangular pyramid shape to reduce friction between the inner wall of the first ball mounting groove 211 and/or the second ball mounting groove 111 and the support ball 30.

Alternatively, the top ends of the supporting protrusions form a tapered structure, and the first ball mounting groove 211 is provided at the top of the tapered structure.

Optionally, the support protrusion is disposed at a central position of the bottom of the frame.

In this embodiment, the prism driving apparatus further includes a circuit board 40, preferably a flexible circuit board (FPC), disposed around the rear portion and both end portions of the frame, the circuit board 40 being provided with a first driving coil 41 and a second driving coil 42, the rear portion of the frame 20 being provided with a first escape groove 22 engaged with the first driving coil 41, and both end portions of the frame 20 being provided with a second escape groove 23 engaged with the second driving coil. When the circuit board 40 is mounted on the frame, the first driving coil 41 is arranged in the first avoidance groove 22, and the second driving coil 42 is arranged in the second avoidance groove 23. The rear part of the carrier 10 is provided with a first driving magnet 12, and both ends of the carrier 10 are provided with second driving magnets 13. The first driving coil 41 and the first driving magnet 12 are correspondingly matched to form a first driving mechanism, and the second driving coil 42 and the second driving magnet 13 are correspondingly matched to form a second driving mechanism. When the first drive coil 41 is energized, an ampere force is applied to the first magnetic field formed by the first drive magnet 12, so that the carrier is driven to move around the first axis, namely, around an axis formed by connecting two end parts of the carrier, which is also called a nodding motion of the carrier. When the second driving coil 42 is electrified, an ampere force is acted in a second magnetic field formed by the second driving magnet 13, so that the carrier is driven to move around a second direction, namely, an axis motion formed in the front-back direction of the carrier is also called a carrier head-shaking motion, and the prism is driven to perform head-shaking and head-shaking motions through head-shaking motion and head-shaking motion of the carrier, so that the optical anti-shake function of the prism is realized.

Optionally, a first adsorption iron sheet 24 is fixedly arranged around the supporting protrusion 21, and a first adsorption magnet 14 is fixedly arranged around the supporting groove 11, after the carrier 10 is connected with the frame 20, attractive force is generated between the first adsorption magnet 14 and the first adsorption iron sheet 24, the bottom end of the carrier is tightly abutted on the frame by the attractive force, so that the supporting balls 30 are prevented from being separated from the supporting ball mounting grooves, namely, the combination of the frame 20 and the carrier 10 is reinforced by the cooperation of the first adsorption magnet 14 and the first adsorption iron sheet 24.

Alternatively, the first adsorption magnet and the first adsorption iron sheet have a ring-shaped structure and have the same size.

It should be noted that, in other embodiments, the first adsorption magnets may be disposed around the support protrusions and the first adsorption iron sheets may be disposed around the support grooves.

Alternatively, in the present embodiment, the first adsorption iron piece mounting groove 25 is provided around the support protrusion 21, the first adsorption magnet mounting groove 15 is provided around the support groove 11, and the first adsorption iron piece 24 and the first adsorption magnet 14 are provided in the first adsorption iron piece mounting groove 25 and the first adsorption magnet mounting groove 15, respectively.

Optionally, a second adsorption iron sheet 16 is fixedly arranged in the first adsorption magnet mounting groove 15, and the first adsorption magnet 14 is arranged in the first adsorption magnet mounting groove 15 and is attracted to the second adsorption iron sheet 16. It should be understood that in other embodiments, the second adsorption iron sheet may not be provided, and the first adsorption magnet may be directly and fixedly mounted in the first adsorption magnet mounting groove.

Optionally, the prism driving device further includes a third adsorption iron sheet 26, two ends of the frame are further provided with a third adsorption iron sheet mounting groove 27, the third adsorption iron sheet mounting groove 27 is arranged close to the second coil avoiding groove 23, the third adsorption iron sheet 26 is mounted in the third adsorption iron sheet mounting groove 27, and the third adsorption iron sheet and the second driving magnets at two ends of the carrier generate attractive force to strengthen connection between the carrier and the frame, so that the connection structure between the carrier and two sides of the frame is more stable.

Optionally, the third iron plate 26 is elongated and disposed in the third iron plate mounting groove in the vertical direction.

In this embodiment, the carrier 10 is provided with a first magnet mounting groove 17 at the rear, and second magnet mounting grooves 18 at both ends thereof, the first driving magnet 12 is mounted in the first magnet mounting groove 17, the second driving magnet 13 is mounted in the second magnet mounting groove 18, and preferably, the second magnet mounting grooves 18 at both ends of the carrier are symmetrically arranged with respect to the first magnet mounting groove 17.

Optionally, a first position sensor 711 and a second position sensor 721 are respectively provided in the first driving coil 71 and the second driving coil 72, and the first position sensor 711 and the second position sensor 721 cooperate with the first driving magnet 12 and the second driving magnet 13, respectively, to detect the displacement of the carrier 10.

In this embodiment, the prism driving apparatus 100 further includes a housing 50, and the housing 50 is mounted on the frame 20 and forms a chamber with the carrier 10 and the bottom of the frame, and the first driving mechanism and the second driving mechanism are disposed in the chamber.

The utility model can be widely applied to various electronic products due to novel conception and creative design, thereby having great commercial application value and wide commercial application prospect.

While the preferred embodiments of the present utility model have been described in detail, it will be appreciated that those skilled in the art, upon reading the above teachings, may make various changes and modifications to the utility model. Such equivalents are also intended to fall within the scope of the utility model as defined by the following claims.

Claims

1. The prism driving device is characterized by comprising a carrier, a frame, supporting balls, a first driving mechanism and a second driving mechanism, wherein the carrier is used for installing a prism and is installed in the frame, the first driving mechanism and the second driving mechanism respectively drive the carrier to move around different axes relative to the frame, and the first driving mechanism and the second driving mechanism respectively drive the carrier to move around different axes relative to the frame, wherein the first driving mechanism and the second driving mechanism are used for driving the prism to move around different axes relative to the frame

2. The prism driving device according to claim 1, further comprising a circuit board disposed around a rear portion and both end portions of the frame and provided with a first driving coil and a second driving coil, the rear portion of the frame being provided with a first escape groove fitted with the first driving coil, both end portions of the frame being provided with a second escape groove fitted with the second driving coil, the first driving mechanism including the first driving coil and a first driving magnet fitted with the first driving coil and provided at a rear portion of the carrier, and the second driving mechanism including a second driving coil and a second driving magnet provided at a side portion of the carrier.

3. The prism driving device according to claim 1, wherein a first adsorption iron sheet is provided around the support protrusion and a first adsorption magnet is provided around the support groove or a first adsorption magnet is provided around the support protrusion and a first adsorption iron sheet is provided around the support groove, and the frame and the carrier are reinforced by the first adsorption magnet and the first adsorption iron sheet being combined.

4. The prism driving device according to claim 3, wherein the supporting protrusion is provided on the frame, the supporting groove is provided on the carrier, a first adsorption iron sheet mounting groove is provided around the supporting protrusion, a first adsorption magnet mounting groove is provided around the supporting groove, and the first adsorption iron sheet and the first adsorption magnet are fixedly provided in the first adsorption iron sheet mounting groove and the first adsorption magnet mounting groove, respectively.

5. The prism driving device according to claim 4, wherein a second adsorption iron sheet is fixedly arranged in the first adsorption magnet mounting groove, and the first adsorption magnet is arranged in the first adsorption magnet mounting groove and is attracted to the second adsorption iron sheet.

6. The prism driving device according to claim 2, further comprising a third adsorption iron sheet, wherein both end portions of the frame are further provided with third adsorption iron sheet mounting grooves for mounting the third adsorption iron sheet, and the third adsorption iron sheet generates attractive force with the second driving magnets provided at both ends of the carrier to strengthen the connection between the carrier and the frame.

7. The prism driving device according to claim 2, wherein a first magnet mounting groove is provided at a rear portion of the carrier, a second magnet mounting groove is provided at both ends of the carrier, the first driving magnet is mounted in the first magnet mounting groove, and the second driving magnet is mounted in the second magnet mounting groove, wherein the second magnet mounting grooves at both ends are symmetrically arranged with respect to the first magnet mounting groove.

8. The prism driving device according to claim 2, wherein a first position sensor and a second position sensor are provided in the first driving coil and the second driving coil, respectively, and the first position sensor and the second position sensor cooperate with the first driving magnet and the second driving magnet, respectively, to detect displacement of the carrier.

9. The prism driving apparatus according to claim 2, wherein an inner wall of the first ball mounting groove and/or the second ball mounting groove is provided as a triangular pyramid.

10. The prism drive of claim 2 further comprising a housing mounted to the frame and forming a chamber with the carrier and a bottom of the frame, the first drive mechanism and the second drive mechanism disposed within the chamber.