CN215682427U

CN215682427U - Driving motor, camera assembly and electronic equipment

Info

Publication number: CN215682427U
Application number: CN202122357487.7U
Authority: CN
Inventors: 邹志辉; 郭天祥
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-28
Anticipated expiration: 2031-09-27

Abstract

The application provides a driving motor, a camera assembly and an electronic device. The driving motor comprises a fixed piece, a movable piece and an SMA wire. The fixing piece comprises a first light transmission part and a first bearing part surrounding the periphery of the first light transmission part. The movable part is movably arranged on the fixed part. The movable piece comprises a second light-transmitting part and a second bearing part surrounding the periphery of the light-transmitting part. The second light transmission part is communicated with the first light transmission part. The second bearing part is borne on the first bearing part, and at least one limiting block is arranged on one side, away from the first bearing part, of the second bearing part. The SMA wire penetrates through the limiting block, two ends of the SMA wire extend out of two ends of the limiting block and are respectively fixedly connected with the fixing piece and the moving piece, and the SMA wire is used for being electrically connected with a power supply and driving the moving piece to move relative to the fixing piece when the SMA wire is powered on to work. The camera assembly and the electronic equipment comprise the motor assembly. The application provides a driving motor, camera subassembly and electronic equipment can avoid the SMA line to scratch peripheral structure, improves the effect of optics anti-shake.

Description

Driving motor, camera assembly and electronic equipment

Technical Field

The application relates to the technical field of cameras, in particular to a driving motor, a camera assembly and electronic equipment.

Background

The lens assembly or the optical assembly of the camera assembly is driven to move by the driving motor, so that the light path of the camera assembly is kept stable, and optical anti-shake is realized. Among them, a drive motor using a Shape Memory Alloy (SMA) wire is applied to a camera assembly of an electronic device because of its advantages of light weight, small size, and the like. However, in the related art, a driving motor using a Shape Memory Alloy (SMA) wire is in a relaxed state when the SMA wire is not in operation, and is easily scratched to a peripheral structure, so that the SMA wire is broken, and optical anti-shake cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The application provides a can avoid SMA line to scrape drive motor, camera subassembly and electronic equipment of rubbing peripheral structure.

In one aspect, the present application provides a driving motor for a camera assembly, where the camera assembly includes a lens assembly and a light sensing assembly, and the driving motor is disposed between the lens assembly and the light sensing assembly; the driving motor includes:

the fixing piece is used for fixedly connecting one of the lens assembly and the light sensing assembly and comprises a first light-transmitting part and a first bearing part surrounding the periphery of the first light-transmitting part;

the movable piece is movably arranged on the fixed piece and is used for fixedly connecting the other one of the lens component and the light sensation component; the movable piece comprises a second light transmission part and a second bearing part surrounding the periphery of the light transmission part, the second light transmission part is communicated with the first light transmission part, the second bearing part is borne on the first bearing part, and at least one limiting block is arranged on one side of the second bearing part, which deviates from the first bearing part; and

the SMA wire penetrates through the limiting block, two ends of the SMA wire pass through two ends of the limiting block and extend out and are fixedly connected with the fixing piece and the moving piece respectively, the SMA wire is used for electrically connecting a power supply and drives the moving piece to move relative to the fixing piece during power-on work.

On the other hand, this application still provides a camera subassembly, including lens subassembly, light sense subassembly, control assembly and driving motor, control assembly's one end electricity is connected the SMA wire, control assembly's the other end is used for the electricity to be connected the power, control assembly is used for control whether the work of circular telegram of SMA wire.

In another aspect, the present application further provides an electronic device, including a gyroscope and a camera assembly, the gyroscope is electrically connected to the control assembly, the gyroscope is used for detecting a shaking displacement of the electronic device and sending the shaking displacement to the control assembly, and the control assembly is used for controlling the electrifying working current of the SMA wire according to the shaking displacement.

The application provides one in driving motor's mounting fixed connection lens subassembly and the light sense subassembly, another in moving part fixed connection lens subassembly and the light sense subassembly, SMA wire's both ends fixed connection mounting and moving part respectively, consequently when SMA wire circular telegram work drive moving part when the mounting motion, be equivalent to driving motor drive lens subassembly and light sense subassembly relative motion to the shake amount that takes place between compensable lens subassembly and the light sense subassembly, realize optics anti-shake. The SMA wire penetrates through the limiting block on the second bearing part, the limiting block limits the moving range of the SMA wire, the scratch between the SMA wire and a peripheral structure in the working state or the non-working state can be reduced or avoided, and the effectiveness of optical anti-shaking is improved. The application provides a camera subassembly and electronic equipment is because of having foretell driving motor, therefore optical anti-shake's validity is higher, and the effect is better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application, where the electronic device includes a gyroscope and a camera assembly;

FIG. 2 is an exploded view of the electronic device shown in FIG. 1, further including a display, a housing, a motherboard, and a battery;

FIG. 3 is a schematic plan view of the camera assembly of the electronic device shown in FIG. 1, wherein the camera assembly includes a lens assembly, a driving motor, a light sensing assembly and a control assembly;

FIG. 4 is a schematic structural diagram of a motor assembly of the camera assembly shown in FIG. 3, wherein the motor assembly includes a fixed member, a movable member, an SMA wire and a limiting block;

fig. 5 is a schematic structural view illustrating a limiting block of the motor assembly shown in fig. 4, the limiting block including a first limiting portion, a second limiting portion and a third limiting portion;

fig. 6 is a schematic structural view of a limiting block of the motor assembly shown in fig. 4, which includes a bottom plate, a first limiting portion, a second limiting portion and a third limiting portion;

FIG. 7 is a schematic view of the motor assembly of FIG. 6 further including first and second jaws;

fig. 8 is a schematic structural diagram of the motor assembly shown in fig. 4, which includes four limiting blocks and four sub SMA wires.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described in the specification can be combined with other embodiments.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example: the component, module or apparatus is not limited to the listed components or assemblies but optionally also includes components or assemblies not listed.

As shown in fig. 1, fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, a personal computer, a watch, an automobile, an unmanned aerial vehicle, a robot, or other devices having a shooting function. The embodiment of the application takes a mobile phone as an example. The electronic apparatus 100 includes a gyroscope 2 and a camera assembly 1.

Referring to fig. 1 and 2, the electronic device 100 further includes a display screen 3, a housing 4, a main board 5 and a battery 6. The housing 4 includes a center frame 41 and a back plate 42. The middle frame 41 and the back plate 42 can be integrally formed or connected together. The display screen 3 is connected to a side of the middle frame 41 facing away from the back plate 42. The display 3, the middle frame 41 and the back plate 42 are surrounded to form an accommodating space 43. The main board 5 and the battery 6 are both disposed in the housing space 43. The battery 6 is electrically connected to the motherboard 5, and the battery 6 is used to supply power to the motherboard 5. In the embodiment of the present application, the battery 6 is a power source. The battery 6 may be one of a lithium ion battery, a nickel hydrogen battery, a nickel cadmium battery, and the like. The display screen 3 is electrically connected with the mainboard 5, and the display screen 3 is used for displaying pictures under the control of the mainboard 5.

Referring to fig. 2 and fig. 3, fig. 3 is a schematic structural diagram of a camera assembly 1 according to an embodiment of the present disclosure. The camera assembly 1 includes a lens assembly 20, a light sensing assembly 30, a control assembly 40, and a driving motor 10. The camera head assembly 1 may be entirely accommodated in the accommodating space 43 or partially accommodated in the accommodating space 43. The camera assembly 1 may form a front camera of the electronic apparatus 100 or a rear camera of the electronic apparatus 100. In other words, the camera assembly 1 can capture light through the side of the display screen 3 facing away from the back plate 42 or through the side of the back plate 42 facing away from the display screen 3. In the embodiment of the present application, the camera assembly 1 is taken as an example to form a rear camera of the electronic device 100. The camera assembly 1 is partially accommodated in the accommodating space 43, and the other part can penetrate through the back plate 42 and protrude out of the electronic device 100. The camera assembly 1 is electrically connected with the main board 5, and the camera assembly 1 is used for shooting images under the control of the main board 5. The main board 5 may transmit the image photographed by the camera assembly 1 to the display screen 3 and control the display screen 3 to display the photographed image.

The gyroscope 2 is accommodated in the accommodating space 43. The gyroscope 2 is electrically connected to the control assembly 40 of the camera assembly 1. The gyroscope 2 is configured to detect a shake direction and a shake displacement amount of the electronic apparatus 100, and send the detected shake direction and shake displacement amount to the control unit 40. In one embodiment, the gyroscope 2 is directly electrically connected to the control device 40, and the gyroscope 2 directly transmits the detected shake direction and shake displacement to the control device 40. In another embodiment, the gyroscope 2 is electrically connected to the main board 5, and the gyroscope 2 transmits the detected shake direction and shake displacement to the main board 5 and sends the shake direction and shake displacement to the control component 40 through the main board 5.

The control component 40 may include a control chip, a control switch, and the like. The control unit 40 controls the driving motor 10 and the optical sensor unit 30 according to the received shake direction and shake displacement.

Specifically, as shown in fig. 4, fig. 4 is a schematic structural diagram of a driving motor 10 according to an embodiment of the present disclosure. The driving motor 10 includes a fixed member 101, a movable member 102, and an SMA wire 103.

Referring to fig. 2 to 4, one end of the control assembly 40 is electrically connected to the SMA wire 103. The other end of the control assembly 40 is used to electrically connect the power source (i.e., the battery 6). In this embodiment, the other end of the control module 40 is electrically connected to the motherboard 5, and the control module 40 obtains electric energy through the motherboard 5. The control unit 40 is configured to control whether the SMA wire 103 is energized and operated and the magnitude of the current during the energization according to the shake direction and the shake displacement detected by the gyroscope 2. Optionally, the control component 40 controls the energization current of the SMA wire 103 to drive the lens component 20 or the optical sensing component 30 to move, and the movement amount of the lens component 20 or the optical sensing component 30 is substantially the same as the shake displacement detected by the gyroscope 2. It is understood that the shake direction and the shake displacement amount of the electronic apparatus 100 detected by the gyroscope 2 may be understood as a relative movement direction and a relative movement amount between the lens assembly 20 and the light sensing assembly 30.

In an application scenario, when the control component 40 receives the shake direction and shake displacement detected by the gyroscope 2 and determines that the camera module is in the shooting mode, the control component controls the energization of the SMA wire 103 and controls the energization current on the SMA wire 103 according to the shake direction and shake displacement, so that the SMA wire 103 deforms correspondingly. In another application scenario, when the control component 40 receives the shake direction and shake displacement detected by the gyroscope 2 and determines that the camera module is in the non-shooting mode, or the control component 40 does not receive the shake direction and shake displacement detected by the gyroscope 2, the SMA wire 103 is controlled to be in the power-off mode.

In addition, the control component 40 is also electrically connected to the light-sensing component 30. The control component 40 is also used for controlling the light sensing component 30 to receive light and perform photoelectric conversion. Specifically, the control component 40 controls the light sensing component 30 to receive the light signal obtained by the lens component 20 and convert the light signal into an electrical signal for output.

As shown in fig. 3, the lens assembly 20 may be a telephoto lens assembly 20 that implements long focus shooting; or a middle and long focus lens assembly 20 for realizing middle and long focus shooting; or a macro lens assembly 20 that implements macro photography. The lens assembly 20 may include a lens barrel and one or more optical lenses disposed within the lens barrel. The optical lens may be a spherical lens, an aspherical lens, a free-form lens, or the like. The optical lens may be made of plastic, glass, etc.

The light sensing component 30 may be a solid state image sensor. The light sensing element 30 includes a photoelectric conversion Device such as a Charge Coupled Device (CCD) or a Metal-Oxide Semiconductor (CMOS) Device. The light sensing unit 30 converts the light signal on the light sensing surface of the photoelectric conversion device into an electrical signal in a proportional relationship with the light signal by using the photoelectric conversion function of the photoelectric conversion device.

Since the lens assembly 20 and the light sensing assembly 30 are not fixedly connected, when the electronic device 100 shakes, the lens assembly 20 and the light sensing assembly 30 are misaligned, which may result in a decrease in imaging quality. The lens assembly 20 or the light sensing assembly 30 is driven by the driving motor 10 to move so as to offset the dislocation between the lens assembly 20 and the light sensing assembly 30, so that the light path formed by the lens assembly 20 and the light sensing assembly 30 is kept stable, and the imaging quality is improved. In one embodiment, the optical sensing assembly 30 is fixed, and the driving motor 10 is used to drive the lens assembly 20 to move, so as to compensate the relative movement between the lens assembly 20 and the optical sensing assembly 30 caused by shaking, so that the central axis of the lens assembly 20 coincides with the central axis of the optical sensing assembly 30. The central axis of the lens assembly 20 can refer to the m-line in the figure, and the central axis of the light sensing assembly 30 can refer to the n-line in the figure. The driving motor 10 is disposed between the lens assembly 20 and the light sensing assembly 30. In other words, the lens unit 20, the driving motor 10, and the optical sensing unit 30 are sequentially arranged in the optical axis direction of the camera module 1. Here, the optical axis direction of the camera assembly 1 may refer to the M-axis direction in the drawing. The control unit 40 may be disposed on a side of the light sensing unit 30 facing away from the lens unit 20, or may be disposed on a side of the lens unit 20, the driving motor 10, and the light sensing unit 30.

Referring to fig. 3 and 4, the fixing member 101 is used for fixedly connecting one of the lens assembly 20 and the light sensing assembly 30. The movable member 102 is movably disposed on the fixed member 101 and is used for fixedly connecting the other of the lens assembly 20 and the light sensing assembly 30. Wherein, the movable member 102 is movably disposed on the fixed member 101, it can be understood that the movable member 102 can move relative to the fixed member 101. The movable element 102 is movably disposed on the fixed element 101, the movable element 102 may be movably connected to the fixed element 101, or the movable element 102 may be directly disposed on the fixed element 101.

In one embodiment, the fixed member 101 is used for fixedly connecting the optical sensor assembly 30, and the movable member 102 is movably disposed on the fixed member 101 and fixedly connected to the lens assembly 20. It is understood that the movement of the moveable member 102 relative to the stationary member 101 can move the lens assembly 20 relative to the optical sensing assembly 30 to compensate for the offset between the lens assembly 20 and the optical sensing assembly 30 caused by the shaking. In the present embodiment, the driving motor 10 is used to drive the lens assembly 20 to move for optical anti-shake.

In another embodiment, the fixed member 101 is used for fixedly connecting the lens assembly 20, and the movable member 102 is movably disposed on the fixed member 101 and fixedly connected to the optical sensing assembly 30. It is understood that the movement of the moveable member 102 relative to the fixed member 101 can move the optical sensing element 30 relative to the lens assembly 20 to compensate for the offset between the optical sensing element 30 and the lens assembly 20 caused by the shaking. In this embodiment, the driving motor 10 is used to drive the light sensing assembly 30 to move for optical anti-shake.

In the following embodiments, the fixed member 101 is fixedly connected to the optical sensor assembly 30, and the movable member 102 is fixedly connected to the lens assembly 20, which are not explicitly described. It is understood that the technical features described in the following embodiments can be correspondingly applied to the embodiment in which the fixed member 101 is fixedly connected to the lens assembly 20 and the movable member 102 is fixedly connected to the light-sensing assembly 30.

Specifically, as shown in fig. 4, the fixing member 101 includes a first transparent portion 110 and a first carrier portion 112 surrounding the first transparent portion 110. The first transparent portion 110 may be a transparent portion made of a transparent material, or may be a transparent through hole. The first bearing part 112 may be a bearing plate, a bearing bracket, etc.

Referring to fig. 3 and 4, the movable element 102 includes a second transparent portion 120 and a second supporting portion 121 surrounding the transparent portion. The second transparent portion 120 may be a transparent portion made of a transparent material, or may be a transparent through hole. The second bearing part 121 may be a bearing plate, a bearing bracket, etc. The second transparent portion 120 communicates with the first transparent portion 110. In one embodiment, the size of the second transparent portion 120 is the same as the size of the first transparent portion 110. The edge of the second light transmission portion 120 is flush with the edge of the first light transmission portion 110 when no shaking occurs. The second transparent portion 120 and the first transparent portion 110 are communicated between the lens assembly 20 and the light sensing assembly 30, so that the light obtained by the lens assembly 20 is transmitted to the light sensing assembly 30 through the first transparent portion 110 and the second transparent portion 120. The second bearing part 121 is borne on the first bearing part 112. The material of the first carrying portion 112 and the material of the second carrying portion 121 may be non-light-transmissive materials. Alternatively, the material of the first carrying portion 112 and the material of the second carrying portion 121 may be plastic, metal, alloy, or the like.

In order to facilitate the fixed member 101 to be fixedly connected to the light sensing element 30 and the movable member 102 to be fixedly connected to the lens assembly 20, the fixed member 101 is disposed close to the light sensing element 30, and the movable member 102 is disposed close to the lens assembly 20. In other words, in the present embodiment, the lens assembly 20, the movable element 102, the fixed element 101 and the light sensing assembly 30 are sequentially arranged along the optical axis direction.

As shown in fig. 4, at least one stop block 104 is disposed on a side of the second bearing part 121 away from the first bearing part 112. The number of stoppers 104 is not specifically limited in this application. The number of stoppers 104 may be one or more. For example: one, four, six, eight, etc. The limiting block 104 and the second bearing portion 121 may be integrally formed or fixedly connected together. When the limiting block 104 and the second bearing portion 121 are integrally formed, the materials of the limiting block 104 and the second bearing portion 121 may be the same or different, and the limiting block 104 and the second bearing portion 121 may be integrally injection-molded, integrally press-molded, and the like. When the limiting block 104 and the second bearing portion 121 are fixedly connected as a whole, the connection manner of the limiting block 104 and the second bearing portion 121 includes, but is not limited to, bonding, welding, screwing, and snapping. The material of the stopper 104 may be plastic, metal, alloy, etc.

The SMA wire 103 has the property of thermal shrinkage and cold expansion. The SMA wire 103 runs through the limiting block 104, and two ends of the SMA wire 103 extend out of two ends of the limiting block 104 and are fixedly connected with the fixed part 101 and the movable part 102 respectively. In other words, one end of the SMA wire 103 is fixedly connected to the fixed member 101, the other end of the SMA wire 103 is fixedly connected to the movable member 102, and the middle portion of the SMA wire 103 is inserted into the limiting block 104. The SMA wire 103 may be directly fixed to the fixing member 101, or may be fixed to the fixing member 101 through another connecting member. The SMA wire 103 may be directly and fixedly connected to the movable member 102, or may be fixedly connected to the movable member 102 through another connecting member. The connection between the SMA wire 103 and the fixing member 101 includes, but is not limited to, welding and bonding. The connection between SMA wire 103 and moveable member 102 includes, but is not limited to, welding, and adhesive bonding.

The SMA wire 103 is used to electrically connect a power source and, when energized, drives the movable member 102 relative to the stationary member 101. Specifically, when the SMA wire 103 is not energized to operate, the SMA wire 103 is in a relaxed state, and at this time, the acting force of the SMA wire 103 on the movable member 102 is small or no, and the movable member 102 and the fixed member 101 are kept relatively stationary. When the SMA wire 103 is powered on to work, the SMA wire 103 is gradually heated and contracted, at this time, the acting force of the SMA wire 103 on the moving element 102 is gradually increased to drive the moving element 102 to move relative to the fixed element 101, and because the fixed element 101 is fixedly connected with the light sensing element 30 and the moving element 102 is fixedly connected with the lens element 20, the movement of the moving element 102 relative to the fixed element 101 is equivalent to the driving of the lens element 20 relative to the light sensing element 30 by the driving motor 10, so that the dislocation and the offset generated between the lens element 20 and the light sensing element 30 can be compensated, and the optical anti-shake is realized.

The fixed part 101 of the driving motor 10 provided by the present application is fixedly connected to one of the lens assembly 20 and the light sensing assembly 30, the moving element 102 is fixedly connected to the other of the lens assembly 20 and the light sensing assembly 30, and two ends of the SMA wire 103 are respectively and fixedly connected to the fixed part 101 and the moving element 102, so that when the SMA wire 103 is powered on to work and drive the moving element 102 to move relative to the fixed part 101, the driving motor 10 drives the lens assembly 20 and the light sensing assembly 30 to move relative to each other, thereby compensating for the jitter occurring between the lens assembly 20 and the light sensing assembly 30, and realizing optical anti-shake. The SMA wire 103 penetrates through the limiting block 104 on the second bearing part 121, and the limiting block 104 limits the moving range of the SMA wire 103, so that the scratch between the SMA wire 103 and the peripheral structure in the working state or the non-working state can be reduced or avoided, and the effectiveness of optical anti-shake is improved. The camera module 1 and the electronic apparatus 100 provided by the present application have the above-mentioned driving motor 10, so the effectiveness of optical anti-shake is high and the effect is good.

In one embodiment, as shown in fig. 5, the limiting block 104 includes a first limiting portion 140, a second limiting portion 141, and a third limiting portion 142 connected in sequence. The first position-limiting portion 140 and the third position-limiting portion 142 are disposed opposite to each other at an interval. One end of the first position-limiting portion 140 away from the second position-limiting portion 141 is fixedly connected to the second carrying portion 121. One end of the third position-limiting portion 142 away from the second position-limiting portion 141 is fixedly connected to the second carrying portion 121. A limiting groove 143 is formed among the first limiting portion 140, the second limiting portion 141, the third limiting portion 142 and the second bearing portion 121, and a part of the SMA wire 103 penetrates through the limiting groove 143. The first position-limiting portion 140, the second position-limiting portion 141 and the third position-limiting portion 142 may be integrally formed or may be sequentially connected to form a whole. When the first, second and third position-limiting portions 140, 141 and 142 are integrally formed, the first, second and third position-limiting portions 140, 141 and 142 are formed by injection molding, bending and stamping. When the first limiting part 140, the second limiting part 141 and the third limiting part 142 are sequentially connected into a whole, the connection mode between the first limiting part 140 and the second limiting part 141 includes but is not limited to clamping, bolt connection, welding and bonding; the connection mode between the second position-limiting portion 141 and the third position-limiting portion 142 includes, but is not limited to, clamping, bolting, welding, and bonding. The first position-limiting portion 140, the second position-limiting portion 141 and the third position-limiting portion 142 may be plate-shaped or column-shaped. In this embodiment, a portion of the SMA wire 103 is inserted into the limiting groove 143, and the limiting groove 143 limits the moving range of the SMA wire 103, so as to reduce or avoid the scratch between the SMA wire 103 and the peripheral structure (for example, the edge of the second bearing part 121, the fixing member 101, and the like) in the working state or the non-working state, and improve the effectiveness of optical anti-shake. The limiting groove 143 is formed by the limiting block 104 and the second bearing part 121, so that the structure is simple and the implementation is easy.

In another embodiment, as shown in fig. 6, the limiting block 104 includes a bottom plate 144, a first limiting portion 140, a second limiting portion 141, and a third limiting portion 142 connected in sequence. The first position-limiting portion 140 and the third position-limiting portion 142 are disposed opposite to each other at an interval. The bottom plate 144 is opposite to the second position-limiting portion 141 and spaced apart from the second position-limiting portion. The bottom plate 144 is fixedly connected to the second bearing part 121. A limiting groove 143 is formed among the first limiting portion 140, the second limiting portion 141, the third limiting portion 142 and the bottom plate 144, and a part of the SMA wire 103 penetrates through the limiting groove 143. The bottom plate 144, the first position-limiting portion 140, the second position-limiting portion 141, and the third position-limiting portion 142 may be integrally formed or may be sequentially connected to form a whole. When the bottom plate 144, the first limiting portion 140, the second limiting portion 141 and the third limiting portion 142 are integrally formed, the bottom plate 144, the first limiting portion 140, the second limiting portion 141 and the third limiting portion 142 are formed in a molding manner including, but not limited to, injection molding, bending and stamping. When the bottom plate 144, the first limiting part 140, the second limiting part 141 and the third limiting part 142 are sequentially connected into a whole, the connection mode between the bottom plate 144 and the first limiting part 140 includes but is not limited to clamping, bolt connection, welding and bonding; the connection between the bottom plate 144 and the third limiting portion 142 includes, but is not limited to, clamping, bolting, welding, and bonding; the connection mode between the first limiting part 140 and the second limiting part 141 includes but is not limited to clamping, bolt connection, welding and bonding; the connection mode between the second position-limiting portion 141 and the third position-limiting portion 142 includes, but is not limited to, clamping, bolting, welding, and bonding. The bottom plate 144, the first position-limiting portion 140, the second position-limiting portion 141, and the third position-limiting portion 142 may be plate-shaped or column-shaped. In addition, the connection manner between the bottom plate 144 and the second bearing part 121 includes, but is not limited to, clamping, bolting, welding, and bonding. In this embodiment, a part of the SMA wire 103 is inserted into the limiting groove 143, and the movement range of the SMA wire 103 is limited by the limiting groove 143, so that the scratch between the SMA wire 103 and the peripheral structure in the working state or the non-working state can be reduced or avoided, and the effectiveness of optical anti-shake is improved. The bottom plate 144 of the limiting block 104 is fixedly connected to the second bearing part 121, and the area of the bottom plate 144 is large, so that the reliability of connection between the limiting block 104 and the second bearing part 121 is high, the stability of limiting the SMA wire 103 can be increased, and the service life of the driving motor 10 can be prolonged.

The extending direction of the limiting groove 143 is the extending direction of the SMA wire 103. When the SMA wire 103 is electrified to work, the SMA wire 103 is suspended in the limit groove 143. In other words, when the SMA wire 103 is electrified to work, the SMA wire 103 is not in contact with the groove wall of the limiting groove 143. It can be understood that the space of the limiting groove 143 is larger than the volume of the SMA wire 103, so that the SMA wire 103 is suspended in the limiting groove 143 and spaced from the groove wall of the limiting groove 143. In this embodiment, when the SMA wire 103 is powered on to work, the SMA wire 103 is suspended in the limiting groove 143, so that the SMA wire 103 can be reduced or prevented from contacting or scratching the groove wall of the limiting groove 143, the short circuit of the SMA wire 103 is caused, and the problem that the SMA wire 103 cannot drive the moving part 102 to move is avoided.

Further, as shown in fig. 7, the driving motor 10 further includes a first jaw 105 and a second jaw 106. The first clamping jaw 105 is disposed at one end of the second bearing portion 121 and is fixedly connected to the fixing member 101. The second clamping jaw 106 is disposed at the other end of the second bearing portion 121 and is fixedly connected to the movable member 102. The two ends of the SMA wire 103 are fixedly connected with a first clamping jaw 105 and a second clamping jaw 106 respectively. In this embodiment, one end of the SMA wire 103 and the fixing member 101 are fixedly connected by the first clamping jaw 105, which facilitates the connection of the SMA wire 103 and improves the connection reliability between the SMA wire 103 and the fixing member 101, and reduces or prevents the SMA wire 103 and the fixing member 101 from loosening. The other end of the SMA wire 103 and the movable part 102 are fixedly connected through the second clamping jaw 106, so that the connection of the SMA wire 103 can be facilitated, the connection reliability between the SMA wire 103 and the movable part 102 can be improved, and the loosening of the SMA wire 103 and the movable part 102 can be reduced or avoided.

Optionally, the first jaw 105 and the second jaw 106 are both conductive. For example: the material of the first clamping jaw 105 and the material of the second clamping jaw 106 are conductive materials such as metal and alloy. The SMA wire 103 is electrically connected to the positive and negative poles of the power supply via the first and

second jaws

105 and 106. In one embodiment, the SMA wire 103 is electrically connected to the positive pole of the power source through the first jaw 105 and to the negative pole of the power source through the first jaw 105. In this embodiment, the first clamping jaw 105 and the second clamping jaw 106 may further conduct the SMA wire 103 with a power supply, so as to energize the SMA wire 103, which may simplify the circuit design of the SMA wire 103, reduce the parts of the driving motor 10, and facilitate simplifying the structure of the driving motor 10.

Optionally, as shown in fig. 8, the second carrying part 121 includes a first sub carrying part 121a, a second sub carrying part 121b, a third sub carrying part 121c, and a fourth sub carrying part 121d, which are connected in sequence. The first sub-bearing part 121a, the second sub-bearing part 121b, the third sub-bearing part 121c and the fourth sub-bearing part 121d are respectively provided with at least one first stopper 104a, at least one second stopper 104b, at least one third stopper 104c and at least one fourth stopper 104 d. The SMA wire 103 includes a first sub SMA wire 103a, a second sub SMA wire 103b, a third sub SMA wire 103c, and a fourth sub SMA wire 103 d. The first sub SMA wire 103a, the second sub SMA wire 103b, the third sub SMA wire 103c and the fourth sub SMA wire 103d respectively penetrate through the first stopper 104a, the second stopper 104b, the third stopper 104c and the fourth stopper 104d, and both ends of the first sub SMA wire 103a, both ends of the second sub SMA wire 103b, both ends of the third sub SMA wire 103c and both ends of the fourth sub SMA wire 103d respectively extend out of both ends of the first stopper 104a, both ends of the second stopper 104b, both ends of the third stopper 104c and both ends of the fourth stopper 104d and are respectively fixedly connected with the fixing member 101 and the moving member 102. The number of the first stopper 104a, the second stopper 104b, the third stopper 104c, and the fourth stopper 104d is not specifically limited in the present application. The number of the first stopper 104a, the second stopper 104b, the third stopper 104c, and the fourth stopper 104d may be the same or different. In this embodiment, the number of the first stopper 104a, the second stopper 104b, the third stopper 104c and the fourth stopper 104d is one.

The movable piece 102 is driven to move relative to the fixed piece 101 by the four sub-SMA wires 103 including the first sub-SMA wire 103a, the second sub-SMA wire 103b, the third sub-SMA wire 103c and the fourth sub-SMA wire 103d, which is beneficial to increasing the driving force and applying the pulling force in multiple directions of the movable piece 102, and is convenient to maintain the stability of the movable piece 102 during the movement process, so that the lens assembly 20 is kept balanced. The first sub-SMA wires 103a, the second sub-SMA wires 103b, the third sub-SMA wires 103c and the fourth sub-SMA wires 103d can be limited by at least one first limiting block 104a, at least one second limiting block 104b, at least one third limiting block 104c and at least one fourth limiting block 104d, respectively, so that the four sub-SMA wires are prevented from being scratched on a peripheral structure to cause short circuit and optical anti-shake failure.

As shown in fig. 8, the first sub SMA wire 103a is disposed opposite to the third sub SMA wire 103 c. When the first sub SMA wire 103a is electrified and works, it deforms along the first direction to drive the moving part 102 to move along the first direction. When the third sub SMA wire 103c is electrified to work, it deforms in the reverse direction of the first direction to drive the movable member 102 to move in the reverse direction of the first direction. The first direction may refer to an X direction in the drawings. The second sub-SMA wire 103b is disposed opposite to the fourth sub-SMA wire 103 d. The second sub SMA wire 103b deforms in the second direction when energized to drive the movable member 102 to move in the second direction. When the fourth sub SMA wire 103d is powered on to work, it deforms in the reverse direction of the second direction to drive the movable member 102 to move in the reverse direction of the second direction. The second direction may refer to the Y direction in the drawings. The first direction intersects with the second direction, and the first direction and the second direction are both perpendicular to the optical axis direction of the camera assembly 1. In this embodiment, the first sub SMA wire 103a and the third sub SMA wire 103c can realize the movement of the movable element 102 along the first direction, and are suitable for optical anti-shake of the camera assembly 1 when the electronic device 100 shakes along the first direction. The second sub SMA wire 103b and the fourth sub SMA wire 103d can realize the movement of the movable member 102 along the second direction, and are suitable for optical anti-shake of the camera assembly 1 when the electronic device 100 shakes along the second direction. In addition, the first direction intersects with the second direction, and the first sub SMA wire 103a, the second sub SMA wire 103b, the third sub SMA wire 103c and the fourth sub SMA wire 103d are matched with each other, which is applicable to optical anti-shake of the camera assembly 1 when the electronic device 100 shakes in a plurality of different directions.

In one embodiment, the first sub SMA wire 103a and the third sub SMA wire 103c are disposed opposite to each other in the second direction. The second sub-SMA wire 103b is disposed opposite to the fourth sub-SMA wire 103d in the first direction. Wherein the first direction is perpendicular to the second direction. The first sub SMA wire 103a, the second sub SMA wire 103b, the third sub SMA wire 103c and the fourth sub SMA wire 103d according to the present embodiment are suitable for use in optical anti-shake of the camera assembly 1 when any shake occurs in the XY plane in the electronic apparatus 100 in cooperation with each other.

The features mentioned above in the description, the claims and the drawings can be combined with one another in any desired manner, insofar as they are of significance within the scope of the application. The advantages and features described for the drive motor 10 apply in a corresponding manner to the camera assembly 1 and the electronic device 100.

The foregoing is a partial description of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims

1. A driving motor is used for a camera assembly and is characterized in that the camera assembly comprises a lens assembly and a light sensing assembly, and the driving motor is arranged between the lens assembly and the light sensing assembly; the driving motor includes:

2. The driving motor of claim 1, wherein the limiting block comprises a first limiting portion, a second limiting portion and a third limiting portion, the first limiting portion and the third limiting portion are opposite and spaced, one end of the first limiting portion, which is far away from the second limiting portion, is fixedly connected with the second bearing portion, one end of the third limiting portion, which is far away from the second limiting portion, is fixedly connected with the second bearing portion, a limiting groove is formed among the first limiting portion, the second limiting portion, the third limiting portion and the second bearing portion, and part of the SMA wires penetrate through the limiting groove.

3. The driving motor according to claim 1, wherein the limiting block comprises a bottom plate, a first limiting portion, a second limiting portion and a third limiting portion, the bottom plate, the first limiting portion and the third limiting portion are sequentially connected, the first limiting portion and the third limiting portion are arranged opposite to each other at intervals, the bottom plate and the second limiting portion are arranged opposite to each other at intervals, the bottom plate is fixedly connected with the second bearing portion, a limiting groove is formed among the first limiting portion, the second limiting portion, the third limiting portion and the bottom plate, and part of the SMA wires penetrate through the limiting groove.

4. The drive motor of claim 2 or 3, wherein the SMA wire is suspended in the limiting groove when the SMA wire is energized for operation.

5. The driving motor according to any one of claims 1 to 3, further comprising a first clamping jaw and a second clamping jaw, wherein the first clamping jaw is disposed at one end of the second bearing portion and fixedly connected to the fixing member, the second clamping jaw is disposed at the other end of the second bearing portion and fixedly connected to the movable member, and two ends of the SMA wire are respectively and fixedly connected to the first clamping jaw and the second clamping jaw.

6. The drive motor of claim 5, wherein the first and second jaws are electrically conductive, and the SMA wire is electrically connected to a positive pole and a negative pole of the power source through the first and second jaws.

7. The driving motor according to any one of claims 1 to 3, wherein the second bearing portion includes a first sub bearing portion, a second sub bearing portion, a third sub bearing portion and a fourth sub bearing portion, which are connected in sequence, the first sub bearing portion, the second sub bearing portion, the third sub bearing portion and the fourth sub bearing portion are respectively provided with at least one first limiting block, at least one second limiting block, at least one third limiting block and at least one fourth limiting block, the SMA wire includes a first sub SMA wire, a second sub SMA wire, a third sub SMA wire and a fourth sub SMA wire, the first sub SMA wire, the second sub SMA wire, the third sub SMA wire and the fourth sub SMA wire respectively penetrate through the first limiting block, the second limiting block, the third limiting block and the fourth limiting block, and two ends of the first sub SMA wire, two ends of the second sub SMA wire, two ends of the third limiting block and the fourth limiting block, The two ends of the second sub SMA wire, the two ends of the third sub SMA wire and the two ends of the fourth sub SMA wire respectively pass through the two ends of the first limiting block, the two ends of the second limiting block, the two ends of the third limiting block and the two ends of the fourth limiting block and extend out of the fixing piece and the moving piece and are fixedly connected with the fixing piece and the moving piece respectively.

8. The drive motor of claim 7, wherein the first sub-SMA wire is disposed opposite to the third sub-SMA wire, and the first sub-SMA wire deforms in a first direction when energized to move the movable member in the first direction, and the third sub-SMA wire deforms in a direction opposite to the first direction when energized to move the movable member in the first direction; the second sub SMA wire and the fourth sub SMA wire are arranged oppositely, the second sub SMA wire deforms along the second direction during power-on work to drive the moving part to move along the second direction, the fourth sub SMA wire deforms along the reverse direction of the second direction during power-on work to drive the moving part to move along the reverse direction of the second direction, wherein the first direction is intersected with the second direction, and the first direction and the second direction are perpendicular to the optical axis direction of the camera assembly.

9. A camera assembly, characterized by, including lens subassembly, light sense subassembly, control assembly and the drive motor of any one of claims 1 to 8, the control assembly electricity is connected the SMA line, and the control assembly electricity is connected the light sense subassembly, the control assembly is used for controlling whether the SMA line is switched on work and controlling the light sense subassembly receives light and carries out photoelectric conversion.

10. An electronic device, comprising a gyroscope and the camera assembly as claimed in claim 9, wherein the gyroscope is electrically connected to the control assembly, the gyroscope is configured to detect a shake direction and a shake displacement of the electronic device and send the shake direction and the shake displacement to the control assembly, and the control assembly is configured to control whether the SMA wire is powered on or not and a current magnitude during the powered on operation according to the shake direction and the shake displacement.