CN113890967B - Assembling method of driving device, camera module and electronic equipment - Google Patents

Abstract

The application provides a driving device assembly method, a driving device, a camera module and electronic equipment, wherein a positioning gasket is placed on a fixing piece, the bottom of a movable assembly is attached to the positioning gasket, after an outer frame is sleeved outside the movable assembly and the fixing piece, an inner top wall of the outer frame is attached to the surface, deviating from the fixing piece, of the movable assembly, and the positioning gasket is drawn out after the driving device is assembled. The stroke range of the movable assembly is limited through the positioning gasket, the stroke quantity of the movable assembly is the thickness of the positioning gasket, the stroke quantity of the movable assembly can be accurately controlled, the accuracy of the driving stroke of the two-section type driving device is guaranteed, the high-precision driving function of the driving device is realized, and the focusing precision of the camera module is improved. The movable assembly is supported by the positioning gaskets, and the movable assembly is supported by the positioning gaskets.

Description

Assembling method of driving device, camera module and electronic equipment

The present application claims priority of chinese patent application entitled "method for assembling driving device, camera module, and electronic apparatus" filed by the chinese intellectual property office at 18/05/2021 under the application number 202110542661.7, which is incorporated herein by reference in its entirety or in part.

Technical Field

The present disclosure relates to the field of mobile terminal technologies, and in particular, to an assembly method of a driving device, a camera module, and an electronic device.

Background

In life, people often use electronic devices such as mobile phones and tablet computers to take pictures, and taking a mobile phone as an example, a camera of the mobile phone generally needs to take pictures of scenes with different far focuses and near focuses.

At present, an Auto Focus (AF) camera is arranged in a mobile phone, a lens of the AF camera is driven by a driving motor to move along an optical axis direction of the AF camera, and a distance between the lens and an image sensor is adjusted to realize a focusing function of the AF camera. Specifically, a driving chip is arranged in the mobile phone and controls a driving motor to drive the lens to move, the distance between the lens and the image sensor is detected through a Hall sensor, the stroke of the driving motor is determined, and the far focus position and the near focus position of the lens are located.

However, due to uncertain factors such as the slope difference of the driving motor and the sensitivity difference of the hall sensor, the stroke of the driving motor is not accurate, and the focusing accuracy of the driving motor is affected.

Disclosure of Invention

The application provides an assembling method of a driving device, the driving device, a camera module and electronic equipment.

A first aspect of the present application provides a method of assembling a driving apparatus for driving a lens to move, the method comprising:

placing at least two positioning gaskets on the surface of the fixing piece facing the lens at intervals, wherein the positioning gaskets are placed on at least two opposite sides of the fixing piece;

a movable assembly is arranged on the fixed piece, and the bottom of the movable assembly is attached to the positioning gasket;

an outer frame is sleeved outside the fixed part and the movable assembly, and the inner top wall of the outer frame is attached to the surface of the movable assembly, which is deviated from the fixed part;

and withdrawing the positioning gasket.

According to the assembling method of the driving device, the positioning gasket is placed on the fixing piece, the bottom of the movable assembly is attached to the positioning gasket, the outer frame is sleeved outside the movable assembly and the fixing piece, the inner top wall of the outer frame is attached to the surface, deviating from the fixing piece, of the movable assembly, and the positioning gasket is drawn out after the driving device is assembled. The stroke range of the movable assembly is limited through the positioning gasket, the stroke quantity of the movable assembly is the thickness of the positioning gasket, the stroke quantity of the movable assembly can be accurately controlled, the accuracy of the driving stroke of the two-section type driving device is guaranteed, the high-precision driving function of the driving device is realized, and the focusing precision of the camera module is improved. The movable assembly is supported by the positioning gaskets, and the movable assembly is supported by the positioning gaskets.

In a possible implementation manner, at least two positioning spacers are placed on the surface of the fixing piece facing the lens at intervals, and specifically include:

placing at least one positioning pad on a first side of the fixture;

at least two positioning gaskets are arranged on a second side of the fixing piece opposite to the first side at intervals.

The positioning gaskets on the two sides of the fixing part support the opposite two sides of the first side and the second side of the corresponding fixing part on the bearing part, and the positioning gaskets on the second side of the fixing part support the other two sides of the bearing part, so that the balance of the bearing part can be ensured, and the bearing part and the fixing part can be kept horizontal.

In a possible embodiment, at least two positioning spacers are spaced apart on a second side of the fixing member opposite to the first side, and specifically include:

and at least one positioning gasket is respectively arranged on the second side of the fixing piece close to the two ends.

The positioning gaskets are arranged on the second side of the fixing part and close to the edges of the two ends, the positioning gaskets on the second side are respectively close to the other two sides of the fixing part, so that the supporting effect of the positioning gaskets on the other two sides of the bearing part can be enhanced, and the bearing part is ensured to be kept horizontal relative to the fixing part.

In a possible implementation manner, at least two positioning spacers are placed on the surface of the fixing piece facing the lens at intervals, and specifically include:

placing a positioning gasket on the edge of the fixing piece; wherein, part overlap joint of location gasket is on the surface of mounting, and another part of location gasket is unsettled outside the mounting.

The positioning gasket is partially lapped on the surface of the fixing piece, and the other part of the positioning gasket is suspended outside the fixing piece, so that the positioning gasket is convenient to pull out.

In a possible embodiment, the positioning gasket comprises a positioning part and a mounting part, at least part of the positioning part is overlapped on the fixing part, and the mounting part is suspended outside the fixing part.

In one possible embodiment, the width of the mounting portion is greater than the width of the positioning portion.

Through making the width of installation department be greater than the width of location portion, the user of being convenient for grips the installation department and takes out the locating pad piece.

In one possible embodiment, there is a gap between the mounting portion and the edge of the fixing.

Through having the clearance between messenger's installation department and the mounting edge, after drive arrangement assembly was accomplished, still had the clearance between the lateral wall of installation department and frame, the user of being convenient for grips the installation department and takes out the locating pad piece.

In a possible implementation manner, the outer frame is sleeved outside the fixing element and the movable element, and specifically includes:

the outer frame is sleeved outside the movable assembly and the fixed part from the side where the movable assembly is located along the optical axis direction of the lens, and the part of the positioning gasket is exposed outside the outer frame.

In a possible implementation mode, a plurality of avoiding grooves are arranged at intervals on the edge of the outer frame, the avoiding grooves correspond to the positioning gaskets one to one, and the avoiding grooves are used for avoiding the positioning gaskets.

In one possible embodiment, the spacer is spaced from the wall of the evasive groove.

Through making the locating spacer and dodging having the clearance between the cell wall in groove, can guarantee that after drive arrangement assembly was accomplished, the locating spacer can be taken out smoothly.

In a possible embodiment, the mounting of the movable assembly on the fixed element comprises:

and a bearing piece is placed on the fixing piece, and the bottom of the bearing piece is attached to the positioning gasket.

The bottom of the bearing piece is attached to the positioning gasket, the surfaces of the two sides of the positioning gasket are respectively attached to the fixing piece and the bearing piece, the thickness of the positioning gasket limits a gap between the bearing piece and the fixing piece, the stroke amount of the bearing piece is limited, the stroke range of the bearing piece is accurately controlled, and the high-precision driving function of the driving device is achieved.

In a possible implementation, before placing at least two positioning spacers at intervals on the surface of the fixing piece facing the lens, the method further includes:

providing a bottom shell;

and a fixing piece is arranged on the bottom shell.

A second aspect of the present application provides a driving device for driving a lens of a camera module to move, wherein the driving device is assembled by the assembling method as described in any one of the above.

The application provides a drive arrangement, during assembly drive arrangement, through place the locating washer on the mounting, with the bottom laminating of movable subassembly on the locating washer, establish the frame at movable subassembly and the outside cover of mounting after, the interior roof laminating of frame deviates from the mounting at movable subassembly on the surface, takes out the locating washer after the drive arrangement assembly is accomplished again. The stroke range of the movable assembly is limited through the positioning gasket, the stroke quantity of the movable assembly is the thickness of the positioning gasket, the stroke quantity of the movable assembly can be accurately controlled, the accuracy of the driving stroke of the two-section type driving device is guaranteed, the high-precision driving function of the driving device is realized, and the focusing precision of the camera module is improved. The movable assembly is supported by the positioning gaskets, and the movable assembly is supported by the positioning gaskets.

A third aspect of the present application provides a driving device, which includes a fixing member, a bearing member, and an outer frame, wherein the bearing member is stacked on the fixing member, and the outer frame is sleeved outside the fixing member and the bearing member;

wherein, the border interval of frame is provided with two at least grooves of dodging, and two at least grooves of dodging are located the lateral wall of the relative both sides of frame respectively, dodge the groove and be used for making the locating pad pass the lateral wall of frame and press from both sides and establish between mounting and carrier.

The avoidance groove is formed in the edge of the outer frame, the positioning gasket can extend into the outer frame through the avoidance groove, so that the positioning gasket is clamped between the fixing piece and the bearing piece, and the stroke amount of the bearing piece is accurately controlled through the positioning gasket; the edge of the side wall of the two opposite sides of the outer frame is respectively provided with at least one avoiding groove, so that the positioning gaskets can be placed on the two opposite sides of the outer frame, and the supporting parts of the bearing parts are balanced by the positioning gaskets. And, after the drive arrangement assembly was accomplished, can take out the locating pad who wears to establish in dodging the inslot.

In a possible embodiment, the first side wall of the outer frame is provided with at least one avoidance groove, and the second side wall of the outer frame opposite to the first side wall is provided with at least two avoidance grooves at intervals.

Through in the lateral wall of the relative both sides of frame, the lateral wall of one side sets up at least one and dodges the groove, and the lateral wall of opposite side sets up two at least intervals and dodges the groove, and through the spacer that dodges on the lateral wall of the relative both sides of frame inslot and wear to establish, can guarantee that spacer will hold carrier support balance, makes and holds carrier and mounting and keep level.

In a possible embodiment, the second side wall of the outer frame is provided with at least one avoidance groove near the two ends.

The positions of the second side wall of the outer frame, which are close to the two ends, are provided with the avoiding grooves, so that the positioning gaskets positioned on the second side wall of the outer frame are respectively close to the other two sides of the outer frame, the supporting effect of the positioning gaskets on the other two sides of the bearing piece is enhanced, and the relative fixing piece of the bearing piece is ensured to be kept horizontal.

In a possible embodiment, at least two opposite limiting bosses are arranged on the surface of the bearing part, which faces away from the fixing part, and the limiting bosses are used for being attached to the inner top wall of the outer frame.

The bearing part is contacted with the inner top wall of the outer frame through the limiting boss, the flatness of a contact surface of the bearing part contacted with the inner top wall of the outer frame can be improved, the bearing part is guaranteed to be kept horizontal when being contacted with the inner top wall of the outer frame, and then the positioning precision of the bearing part to the lens is improved, and the focusing performance of the lens is improved.

The fourth aspect of the present application provides a camera module, including: and a driving device as described above, a side surface of a housing of the driving device being provided with a mounting hole through which the lens is accommodated in the housing.

The application provides a camera module, including drive arrangement and the camera lens of installing in drive arrangement, drive arrangement can drive the camera lens and remove. When the driving device is assembled, the positioning gasket is placed on the fixing piece, the bottom of the movable assembly is attached to the positioning gasket, the outer frame is sleeved outside the movable assembly and the fixing piece, the inner top wall of the outer frame is attached to the surface, deviating from the fixing piece, of the movable assembly, and the positioning gasket is drawn out after the driving device is assembled. The stroke range of the movable assembly is limited through the positioning gasket, the stroke quantity of the movable assembly is the thickness of the positioning gasket, the stroke quantity of the movable assembly can be accurately controlled, the accuracy of the driving stroke of the two-section type driving device is guaranteed, the high-precision driving function of the driving device is realized, and the focusing precision of the camera module is improved. The movable assembly is supported by the positioning gaskets, and the movable assembly is supported by the positioning gaskets.

A fifth aspect of the present application provides an electronic device, comprising at least one camera module as described above.

The application provides an electronic equipment, including the module of making a video recording, the module of making a video recording includes drive arrangement and installs the camera lens in drive arrangement, and drive arrangement can drive the camera lens and remove. When the driving device is assembled, the positioning gasket is placed on the fixing piece, the bottom of the movable assembly is attached to the positioning gasket, the outer frame is sleeved outside the movable assembly and the fixing piece, the inner top wall of the outer frame is attached to the surface, deviating from the fixing piece, of the movable assembly, and the positioning gasket is drawn out after the driving device is assembled. The stroke range of the movable assembly is limited through the positioning gasket, the stroke quantity of the movable assembly is the thickness of the positioning gasket, the stroke quantity of the movable assembly can be accurately controlled, the accuracy of the driving stroke of the two-section driving device is guaranteed, the high-precision driving function of the driving device is realized, and the focusing precision of the camera module is improved. The movable assembly is supported by the positioning gaskets, and the movable assembly is supported by the positioning gaskets.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 is a partial exploded view of FIG. 1;

fig. 3 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is an assembly structure diagram of a driving device provided in an embodiment of the present application;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is a cross-sectional view taken at A-A of FIG. 5;

FIG. 8 is an enlarged view of a portion of FIG. 7 at B;

fig. 9 is a schematic flow chart illustrating an assembly method of a driving device according to an embodiment of the present disclosure;

FIG. 10 is a block diagram of a positioning pad disposed on a fixing element according to an embodiment of the present disclosure;

FIG. 11 is a block diagram of a movable assembly disposed on a fixed member according to an embodiment of the present disclosure;

fig. 12 is a structural view of a frame provided outside the movable assembly and the fixing member according to an embodiment of the present application.

Description of reference numerals:

100-an electronic device;

1-a camera module; 2-a housing; 21-rear cover; 211-light transmission holes; 22-middle frame; 3-a display panel; 4-a circuit board;

11-a drive device; 12-a lens; 13-an image sensor assembly; 14-heat conducting liquid; 15-annular sealing plate; 16-a positioning pad;

111-a housing; 112-a fixing member; 113-a carrier; 131-an image sensor; 132-an electrical connection; 151-sealing the hole; 161-a positioning section; 162-a mounting portion;

1111-outer frame; 1112-a bottom shell; 1121-first side; 1122-second side; 1123-support column; 1131, limiting a boss;

111 a-mounting holes; 111 b-avoidance slot.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

With the continuous progress of science and technology, the shooting function has become a mobile phone, a tablet computer, a notebook computer and a personal digital assistant ^{Theory of things (P)} ers _o nal ^D i _g ital ^A ssistant _， ^PDA ) _、 Intelligent wearable device _、 Sales terminal ( ^P _o int _o f Sales _， ^P OS), etc.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure; fig. 2 is a partial exploded view of fig. 1. Referring to fig. 1 and 2, an electronic device 100 according to the present application will be described with reference to a mobile phone as an example. It should be understood that the electronic device 100 of the present embodiment includes, but is not limited to, a mobile phone, and the electronic device 100 may also be a mobile terminal such as the tablet computer, the notebook computer, the PDA, the smart wearable device, or the POS.

Referring to fig. 1 and 2, the electronic apparatus 100 may include a housing 2, a display panel 3, a camera module 1, and a circuit board 4. The back and the side of electronic equipment 100 are enclosed to shell 2, and display panel 3 installs on shell 2, and display panel 3 and shell 2 enclose into electronic equipment 100's accommodation space jointly, and module 1 and circuit board 4 of making a video recording all install in this accommodation space. In addition, a microphone, a loudspeaker, a battery or other devices can be arranged in the accommodating space.

Referring to fig. 1, the camera module 1 is shown in the area near the top edge of the housing 2. It is to be understood that the position of the camera module 1 is not limited to the position shown in fig. 1.

Referring to fig. 2, in some embodiments, the housing 2 may include a rear cover 21 and a middle frame 22, a light hole 211 is formed in the rear cover 21, the camera module 1 may be disposed on the middle frame 22, and the camera module 1 collects external ambient light through the light hole 211 in the rear cover 21. Wherein, the sensitization face and the light trap 211 of module 1 of making a video recording set up relatively, and external environment light passes the light trap 211 and shines to the sensitization face, and the sensitization face is used for gathering external environment light, and module 1 of making a video recording is used for converting light signal into the signal of telecommunication to realize its shooting function.

Fig. 2 shows that one camera module 1 is provided in the electronic device 100, and it should be noted that, in practical applications, the number of camera modules 1 is not limited to one, and the number of camera modules 1 may also be two or more than two. When the number of the camera modules 1 is plural, the plurality of camera modules 1 can be arranged arbitrarily in the X-Y plane. For example, the plurality of camera modules 1 are arranged in the X-axis direction, or the plurality of camera modules 1 are arranged in the Y-axis direction.

In addition, the camera module 1 includes, but is not limited to, an Auto Focus (AF) module, a Fixed Focus (FF) module, a wide camera module, a telephoto camera module, a color camera module, or a monochrome camera module. The camera module 1 in the electronic device 100 may include any one of the camera modules 1, or two or more of the camera modules 1. When the number of the camera modules 1 is two or more, the two or more camera modules 1 may be integrated into one camera module.

Referring to fig. 2, the camera module 1 may be electrically connected to the circuit board 4. The circuit board 4 is, for example, a main board in the electronic device 100, and as an embodiment, the camera module 1 may be electrically connected to the main board through an electrical connector. For example, the camera module 1 is provided with a female seat of an electrical connector, and the motherboard is provided with a male seat of the electrical connector, and the female seat is inserted into the male seat to realize the electrical connection between the camera module 1 and the motherboard. Wherein, be equipped with the treater on the mainboard for example, shoot the image through treater control camera module 1. When a user inputs a shooting instruction, the processor receives the shooting instruction and controls the camera module 1 to shoot a shooting object according to the shooting instruction.

The image pickup module 1 in the electronic apparatus 100 according to the embodiment of the present application will be described in detail below.

Fig. 3 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure; fig. 4 is an exploded view of fig. 3. Referring to fig. 3 and 4, the camera module 1 of the present embodiment includes a driving device 11, a lens 12, and an image sensor assembly 13.

Referring to fig. 3, the driving device 11 includes a housing 111, the housing 111 is hollow to form an accommodating space, and a mounting hole 111a is formed on one side surface of the housing 111; the lens 12 is mounted on the housing 111 through the mounting hole 111a, and a portion of the lens 12 is located inside the housing 111 and another portion of the lens 12 is exposed outside the housing 111.

Specifically, the light incident side of the lens 12 is located outside the housing 111, and the light exiting side of the lens 12 is located inside the housing 111. For example, the light incident side of the lens 12 corresponds to a light hole 211 on the back cover of the electronic device 100, external ambient light enters the lens 12 from the light incident side of the lens 12 through the light hole 211, the lens 12 is composed of one or more stacked lenses, for example, the optical axis of the lens 12 passes through the center of the lens, the lens condenses the incident light, and the condensed light exits from the light exiting side of the lens 12.

Referring to fig. 4, the image sensor assembly 13 is fixed in the housing 111, the image sensor assembly 13 is located on the light-emitting side of the lens 12, and the optical axis of the lens 12 exemplarily passes through the center of the image sensor assembly 13. The light emitted from the lens 12 enters the image sensor assembly 13, and the emergent light signal is converted into an electric signal through the photoelectric conversion function of the image sensor assembly 13, so that the imaging function of the camera module 1 is realized.

The housing 111 of the driving device 11 may include an outer frame 1111 and a bottom case 1112, and the outer frame 1111 and the bottom case 1112 jointly enclose an accommodating space of the housing 111. Taking the case that the outer frame 1111 faces the light-transmitting hole 211 of the rear cover of the electronic device 100, and the bottom cover 1112 faces away from the rear cover, a surface of the outer frame 1111 opposite to the bottom cover 1112 is defined as an inner top wall of the outer frame, and the mounting hole 111a may be located on the inner top wall of the outer frame 1111. The optical axis of the lens 12 may be perpendicular to the plane of the bottom shell 1112, the image sensor assembly 13 is disposed near the bottom shell 1112, and the image sensor assembly 13 is located in the space between the light emitting side of the lens 12 and the bottom shell 1112.

With continued reference to fig. 4, image sensor assembly 13 may include an image sensor 131 and an electrical connection 132. The image sensor 131 is located on the light exit side of the lens 12, for example, the optical axis of the lens 12 passes through the center of the image sensor 131. The light emitted from the lens 12 is irradiated to the image sensor 131, and the image sensor 131 photoelectrically converts the light signal into an electrical signal, thereby realizing the imaging function of the camera module 1.

The electrical connection member 132 is used to electrically connect the image sensor 131 to an external circuit, and thus, control the image sensing operation through the external circuit. Specifically, one end of the electrical connector 132 is connected to the image sensor 131, and the other end of the electrical connector 132 is connected to an external circuit, for example, the other end of the electrical connector 132 is connected to the circuit board 4 in the electronic device 100. When the user takes a picture, the processor on the circuit board 4 controls the operation of the image sensor 131.

The image sensor 131 generates heat during operation, the heat is collected on the image sensor 131, which affects the performance of the image sensor 131, and in severe cases, the image sensor 131 cannot operate normally, so that heat dissipation needs to be performed on the image sensor 131. Therefore, referring to fig. 4, a gap between the heat radiation surface of the image sensor 131 (the surface of the image sensor 131 facing the bottom case 1112) and the bottom case 1112 is filled with the thermal conductive liquid 14, and the image sensor 131 is radiated with the thermal conductive liquid 14. Through the heat conduction effect of the heat conduction liquid 14, the heat dissipation efficiency of the image sensor 131 can be improved, the heat dissipation effect of the image sensor 131 is improved, and the working performance of the image sensor 131 is ensured.

An annular seal plate 15 is attached to a bottom shell 1112 of the housing 111, and the heat transfer liquid 14 is located in an area surrounded by the annular seal plate 15. The heat transfer liquid 14 is a flowable liquid, and the heat transfer liquid 14 is confined in an area surrounded by the annular sealing plate 15 by providing the annular sealing plate 15 on the bottom shell 1112. The area surrounded by the annular sealing plate 15 may correspond to a heat radiation surface of the image sensor 131.

A gap can be formed between the annular sealing plate 15 and the heat dissipation surface of the image sensor 131, so that the heat conduction liquid 14 is ensured to be fully contacted with the heat dissipation surface of the image sensor 131, and a certain flowing space is reserved for the heat conduction liquid 14 to expand when heated; further, the heat-conducting liquid 14 is prevented from overflowing the annular sealing plate 15 by the surface tension action of the heat-conducting liquid 14 in the gap between the surface of the annular sealing plate 15 and the heat radiating surface of the image sensor 131.

Referring to fig. 4, as an embodiment, a plurality of sealing holes 151 may be formed at intervals in the annular sealing plate 15, and the overflowing heat transfer liquid 14 is stored in the sealing holes 151 in a sealed manner, so that the heat transfer liquid 14 is prevented from overflowing out of the annular sealing plate 15. In other embodiments, instead of the seal hole 151, the surface of the annular seal plate 15 may be an uneven corrugated surface, and the extending direction of the corrugations of the corrugated surface may coincide with the extending direction of each side of the annular seal plate 15; alternatively, a plurality of strip-shaped grooves may be provided at intervals on the surface of the annular seal plate 15, and the strip-shaped grooves extend in the contour line direction of the annular seal plate 15.

The driving device 11 can drive the lens 12 to move, for example, the driving device 11 drives the lens 12 to move along the optical axis direction thereof, so as to realize the focusing function of the camera module 1. The driving device and the method of assembling the driving device will be described in detail below.

Fig. 5 is an assembly structure diagram of a driving device according to an embodiment of the present application; FIG. 6 is an exploded view of FIG. 5; FIG. 7 is a cross-sectional view taken at A-A of FIG. 5; FIG. 8 is an enlarged view of a portion of FIG. 7 at B; fig. 9 is a schematic flow chart illustrating an assembly method of a driving device according to an embodiment of the present disclosure; FIG. 10 is a block diagram illustrating an exemplary embodiment of a positioning pad disposed on a fixing element;

FIG. 11 is a block diagram of a movable assembly disposed on a fixed member according to an embodiment of the present disclosure; fig. 12 is a structural view of a frame provided outside the movable assembly and the fixing member according to an embodiment of the present application.

In order to facilitate the illustration of the internal structure of the drive device 11, the bottom case 1112 of the housing 111 of the drive device 11 is removed in fig. 5 to 8. Referring to fig. 5 and 6, a fixed member 112 and a movable member are provided in an accommodation space formed by a housing 111 of the drive device 11, and as shown in fig. 7, the fixed member 112 and the movable member are stacked in the optical axis direction of the lens 12, the fixed member 112 is provided adjacent to a bottom case 1112 of the housing 111, the movable member is located in a space surrounded by an outer frame 1111 and the fixed member 112, and the lens 12 is mounted on the movable member.

Referring to fig. 7 and 8, the fixing element 112 is fixed in the housing 111, and the movable element can move in the housing 111, for example, the movable element can move at least along the optical axis direction of the lens 12, and the movable element drives the lens 12 to move along the optical axis direction thereof, so as to realize the focusing function of the lens 12. The movable assembly at least includes a bearing member 113, and the bearing member 113 is sleeved on the outer sidewall of the lens 12 to support the lens 12 and drive the lens 12 to move.

In addition, the image sensor assembly 13 may be located in a space between the fixing member 112 and the bottom case 1112 of the housing 111. Illustratively, the image sensor assembly 13 is mounted on the fixing member 112 or the bottom shell 1112 through a movable component, and the movable component drives the image sensor 131 to translate or rotate in a plane where the image sensor is located. Taking a mobile phone as an example, the horizontal movement of the image sensor assembly 13 compensates for the displacement caused by the shake of the hand when the user takes a picture with the mobile phone, so as to prevent the picture taken from blurring, improve the definition of the picture and improve the quality of the picture taken by the camera module 1.

Alternatively, the image sensor assembly 13 may be fixed on the fixing member 112 or the bottom case 1112, and the focusing function and the anti-shake function of the driving apparatus 11 are simultaneously realized by moving the lens 12. To this end, continuing to take the mobile phone as an example, when the user focuses through the mobile phone during shooting, the bearing component 113 can drive the lens 12 to move along the optical axis direction thereof; when the user shakes his hand, the carrier 113 can drive the lens 12 to horizontally move in the plane where the carrier is located, so as to adjust the corresponding position of the optical axis of the lens 12 on the image sensor 131, thereby realizing the anti-shake function of the driving device 11.

In practical applications, a driving assembly (not shown) is usually disposed between the fixed member 112 and the movable assembly, and the driving assembly is used for driving the movable assembly to move, and further, the movable assembly drives the lens 12 to move. Specifically, the driving assembly drives the movable assembly to move in a space between the fixing member 112 and the inner top wall of the outer frame 1111, for example, in the optical axis direction of the lens 12, and the driving assembly drives the movable assembly to move from a position close to the fixing member 112 to a position close to the inner top wall of the outer frame 1111.

When the movable assembly is located close to the fixed member 112, the lens 12 is located at a far focus position; when the movable components are located near the inner top wall of the outer frame 1111, the lens 12 is located at the near focus position. The driving component drives the bearing part 113 to move, and the bearing part 113 drives the lens 12 to move between a far focus position and a near focus position, so that the focusing function of the lens 12 is realized.

Taking the example that the driving assembly drives the lens 12 to move along the optical axis direction thereof, as an embodiment, the driving assembly may include a shape memory alloy wire connected between the fixing member 112 and the movable assembly, for example, the shape memory alloy wire is connected between the fixing member 112 and the supporting member 113, or the movable assembly may further include a spring plate fixed on the supporting member 113, and the shape memory alloy wire is connected between the fixing member 112 and the spring plate. The movable assembly is driven to move in the optical axis direction of the lens 12 relative to the fixed member 112 by the telescopic property of the shape memory alloy wire in the non-energized state and the energized state.

As another embodiment, the driving assembly may include a magnetic member and a driving coil, the magnetic member is fixed in the housing 111, the driving coil is sleeved on the outer wall of the bearing member 113, the driving coil generates an electromagnetic field by passing current into the driving coil, a magnetic force is generated between the driving coil and the magnetic member, the magnetic force drives the driving coil to move, and the driving coil drives the lens 12 to move along the optical axis direction thereof through the bearing member 113.

Alternatively, the driving assembly may also be another structure capable of driving the supporting member 113 to move relative to the fixing member 112, and this embodiment is not limited in this respect.

Continuing with the mobile phone as an example, the driving chip disposed in the mobile phone is usually used to control the driving assembly to drive the carrier 113 to move, in the related art, the driving chip is used to control the on/off and the magnitude and direction of the current in the shape memory alloy wire or the driving coil, so that the driving assembly drives the carrier 113 to continuously move and stop at any position, thereby realizing the continuous stroke change of the carrier 113, and the lens 12 is in the continuous focusing mode.

When the movable assembly moves relative to the fixed member 112, the magnetic field intensity on the surface of the hall sensor changes, and the hall sensor detects the displacement of the movable assembly through the change of the magnetic field intensity and feeds back the detection result to the driving chip. According to the focusing requirement, the driving chip controls the driving assembly to make the bearing member 113 stay at a certain position.

Since the carrier 113 is in a continuous stroke variation mode, the driving chip continuously and precisely adjusts the distance between the lens 12 and the image sensor assembly 13, and the driving chip has a complicated control manner for the driving assembly, which results in a slow focusing speed of the lens 12. Moreover, due to the limitations of the structure of the driving assembly and the driving manner, it is difficult to accurately control the balance of the carrier 113 during the moving process, and due to uncertain factors such as the sensitivity difference of the hall sensor and the difference of the driving current introduced into the driving assembly, the stroke of the carrier 113 is not accurate, which affects the focusing accuracy of the lens 12.

In view of this, the driving device 11 provided in this embodiment may be a two-stage driving device 11, and the driving device 11 may drive the lens 12 to stay at the far focus position and the near focus position, so as to implement a far focus and near focus two-stage focusing mode of the lens 12. Specifically, as shown in fig. 8, for the carrier 113 located in the space formed between the fixing member 112 and the outer frame 1111, when the surface of the carrier 113 facing the fixing member 112 is attached to the fixing member 112, the lens 12 is located at the telephoto position; when the surface of the bearing 113 facing the inner top wall of the outer frame 1111 is attached to the inner top wall of the outer frame 1111, the lens 12 is located at the near-focus position.

The far focus position and the near focus position of the lens 12 are positioned by the attaching state of the surfaces of the two sides of the bearing part 113, the surface of the fixing part 112 and the inner top wall of the outer frame 1111 respectively, the stroke range of the bearing part 113 can be accurately determined, the far focus and near focus two-gear focusing position of the lens 12 can be accurately positioned, and the high-precision driving function of the driving device 11 can be realized. In addition, the stroke of the bearing part 113 is mechanically limited by the fixing part 112 and the inner top wall of the outer frame 1111, requirements on the balance of the bearing part 113 in the moving process, the precision of the driving current introduced into the driving assembly and the like are low, the control mode of the driving chip on the driving device 11 is simple, and the focusing speed of the lens 12 can be improved.

Specifically, referring to fig. 5 and 6, in the present embodiment, the stroke range of the carrier 113 is determined according to the far focus position and the near focus position of the lens 12, and according to the stroke range of the carrier 113, in the process of assembling the driving device 11, by placing the positioning spacer 16 between the fixing member 112 and the carrier 113, a moving space of the carrier 113 is reserved, the stroke range of the carrier 113 is accurately set, and the high-precision driving function of the driving device 11 is realized.

The method of assembling the drive unit 11 will be described in detail below with reference to the structure of the drive unit 11.

Referring to fig. 9, the method for assembling the driving device 11 of the present embodiment includes the following steps:

s100, placing at least two positioning gaskets on the surface, facing the lens, of the fixing piece at intervals, wherein the positioning gaskets are placed on at least two opposite sides of the fixing piece.

Referring to fig. 10, after the fixing member 112 is installed, a positioning pad 16 is placed on a surface of the fixing member 112 facing the lens 12, that is, a surface of the fixing member 112 facing away from the bottom shell 1112 of the housing 111 of the driving device 11, and a thickness of the positioning pad 16 is consistent with a stroke amount of the carrier 113. The positioning pads 16 are disposed on the surface of the fixing member 112 at intervals, and the positioning pads 16 are disposed on at least two opposite sides of the fixing member 112, so as to ensure the balance performance of the bearing member 113 when the bearing member 113 is subsequently disposed on the positioning pads 16, so that the bearing member 113 and the fixing member 112 are kept horizontal to each other, and the accuracy of the stroke range of the bearing member 113 is ensured.

The positioning pad 16 used in the present embodiment is a high-precision pad, and the surface flatness of the positioning pad 16 is high, and the thicknesses of the respective portions of the positioning pad 16 are uniform. For example, the positioning pad 16 may be formed by a precision machining process, for example, the positioning pad 16 may be machined by a numerical control machine, and after the machining process is completed, the positioning pad 16 is polished or ground, so as to improve the surface flatness of the positioning pad 16.

Taking the case 111 of the driving device 11 as a cube, the outer contour shapes of the fixing member 112 and the supporting member 113 can be rectangular. Two opposite sides of the fixing member 112 are respectively defined as a first side 1121 and a second side 1122 thereof, for example, two positioning pads 16 are placed on the surface of the fixing member 112, the first side 1121 and the second side 1122 of the fixing member 112 are respectively placed with one positioning pad 16, and the positioning pads 16 on both sides may be both located at the central portion of the respective sides, or the positioning pads 16 on both sides are respectively located at both sides of the center line of the first side 1121 and the second side 1122, so as to ensure that the positioning pads 16 on both sides can stably support the bearing member 113.

To improve the balance of the positioning pads 16 supporting the carrier 113, as shown in fig. 10, at least one positioning pad 16 may be disposed on the first side 1121 of the fixing member 112 and at least two positioning pads 16 may be disposed at intervals on the second side 1122 of the fixing member 112. Thus, the positioning pads 16 disposed on opposite sides of the fixing member 112 collectively form a positioning surface that extends in a direction of a plane in which the surface of the fixing member 112 is located, and the positioning surface covers the opposite sides of the fixing member 112.

That is, the positioning pads 16 on both sides of the fixing member 112 support both sides of the carrier 113 subsequently installed above the fixing member 112, so as to ensure the balance between the two sides of the carrier 113 corresponding to the first side 1121 and the second side 1122 of the fixing member 112; in addition, because at least two positioning pads 16 are disposed on the second side 1122 of the fixing member 112 at intervals, the two positioning pads 16 can support the bearing member 113 to ensure the balance of the other two sides of the bearing member 113, thereby ensuring the balance of the bearing member 113 and keeping the bearing member 113 and the fixing member 112 horizontal.

Illustratively, one spacer 16 may be positioned on the first side 1121 of the securing member 112, and two spacers 16 may be positioned at a distance on the second side 1122 of the securing member 112. Referring to fig. 10, the two positioning pads 16 disposed on the second side 1122 of the fixing member 112 may be respectively close to two ends of the side, and the two positioning pads 16 on the side are respectively disposed close to two side edges of the fixing member 112, so that the two positioning pads 16 on the second side 1122 of the fixing member 112 are respectively in contact with portions of the corresponding side of the carrier 113 close to the two ends, which may enhance a supporting effect on the other two sides of the carrier 113, and the positioning pads 16 on the first side 1121 of the outer reinforcing member 112 support the carrier 113, which may keep the carrier 113 horizontal with respect to the fixing member 112, thereby improving a positioning accuracy of the positioning pads 16 on the carrier 113.

As for the placement position of the positioning pad 16 on the first side 1121 of the fixing member 112, the present embodiment is not particularly limited. For example, the positioning pad 16 may be placed at a central portion of the first side 1121 of the fixing member 112; alternatively, the positioning pad 16 can be placed on the first side 1121 of the fixing member 112 near the edge.

As shown in fig. 4, the casing 111 of the driving device 11 includes a bottom shell 1112 and an outer frame 1111, and the fixing element 112 and the movable element are located in an accommodating space defined by the bottom shell 1112 and the outer frame 1111. In this regard, if the fixing element 112 is fixed on the bottom shell 1112 of the housing 111 of the driving device 11, when assembling the driving device 11, firstly, the bottom shell 1112 is provided, and the fixing element 112 is installed on the bottom shell 1112, for example, the surface of the fixing element 112 facing the bottom shell 1112 is fixed on the bottom shell 1112 by gluing or welding; then, the positioning pad 16 is placed on the surface of the fixing member 112 facing away from the bottom shell 1112.

S200, mounting a movable assembly on the fixing piece, and attaching the bottom of the movable assembly to the positioning gasket.

As described above, taking the movable assembly including the carrier 113 as an example, referring to fig. 11, after the positioning pad 16 is placed on the surface of the fixing member 112 facing the carrier 113, the carrier 113 is placed on the fixing member 112, and the bottom of the carrier 113 (i.e., the surface of the carrier 113 facing the fixing member 112) is attached to the positioning pad 16. Thus, the two side surfaces of the positioning spacer 16 are respectively attached to the fixing member 112 and the carrier member 113, and the thickness of the positioning spacer 16 defines the distance between the carrier member 113 and the fixing member 112.

The moving range of the bearing part 113 is limited by the positioning gasket 16, the thickness of the positioning gasket 16 is the stroke range of the bearing part 113, the stroke amount of the bearing part 113 after the driving device 11 is assembled can be accurately controlled, the high-precision driving function of the driving device 11 is realized, and the focusing precision of the camera module 1 is improved.

In addition, if the movable assembly includes other components besides the bearing member 113, the other components and the movable assembly may be assembled together to form the movable assembly, and then the movable assembly may be placed on the positioning fixing piece. As mentioned above, taking the movable assembly comprising the supporting member 113 and the elastic sheet fixed on the supporting member 113 as an example, the elastic sheet may be fixed on the supporting member 113 to form a whole, and then the movable assembly is placed on the fixing member 112, wherein the surface of the supporting member 113 facing the fixing member 112 is attached to the positioning pad 16.

Also, during assembly of movable assembly and stationary member 112, assembly of at least a portion of the drive assembly may be completed. Illustratively, if the drive assembly includes shape memory alloy wire, the shape memory alloy wire may be coupled between the movable assembly and the stationary member 112 after the movable assembly is placed on the stationary member 112; if the driving assembly comprises the driving coil and the magnetic part, the driving coil can be fixed on the outer side wall of the bearing part 113 firstly, then the movable assembly is placed on the fixing part 112, as for the magnetic part, the magnetic part can be installed on the outer frame 1111 or the fixed support, and after the movable assembly is placed, the alignment between the magnetic part and the driving coil is realized when the fixed support or the outer frame 1111 is installed.

S300, sleeving an outer frame outside the fixing piece and the movable assembly, and attaching the inner top wall of the outer frame to the surface of the movable assembly departing from the fixing piece.

Referring to fig. 12, the movable assembly is placed on the fixed member 112, after the bottom of the supporting member 113 is attached to the positioning pad 16, and after the driving assembly is set, the outer frame 1111 of the driving device 11 is sleeved on the movable assembly and the fixed member 112; wherein the inner top wall of the outer frame 1111 abuts the surface of the movable assembly facing away from the fixed member 112.

Specifically, as shown in fig. 6, when the outer frame 1111 is mounted, the outer frame 1111 is fitted around the movable element and the fixing member 112 from the side where the movable element is located along the optical axis direction of the lens 12, and the outer frame 1111 applies pressure to the movable element to attach the inner top wall thereof to the surface of the movable element.

Referring to fig. 8, for example, the inner top wall of the outer frame 1111 is attached to the surface of the supporting element 113 away from the fixing element 112, after the outer frame 1111 is installed, the two side surfaces of the supporting element 113 are respectively attached to the inner top wall of the outer frame 1111 and the positioning pad 16, and the supporting element 113 is limited by the outer frame 1111 and cannot move; the positioning pad 16 enables a gap to be formed between the carrier 113 and the fixing member 112, and then after the positioning pad 16 is pulled out, the amount of the gap between the carrier 113 and the fixing member 112 (the thickness of the positioning pad 16) is the stroke range of the carrier 113, so that the stroke amount of the carrier 113 is accurately defined, the focusing accuracy of the lens 12 is improved, and the high-precision driving function of the driving device 11 is realized.

When the bearing member 113 is in contact with the inner top wall of the outer frame 1111, in order to improve the balance of the bearing member 113, referring to fig. 6, in one embodiment, at least two opposite limiting bosses 1131 are provided on the surface of the bearing member 113 facing the inner top wall of the outer frame 1111, and the bearing member 113 is in contact with the inner top wall of the outer frame 1111 through the limiting bosses 1131. Through controlling spacing boss 1131's machining precision, the top surface of each spacing boss 1131 on the carrier 113 can all be located same horizontal plane, carrier 113 passes through spacing boss 1131 and the interior roof contact of frame 1111, can promote the roughness of the contact surface of carrier 113 and the interior roof contact of frame 1111, keep the level when guaranteeing carrier 113 and the interior roof contact of frame 1111, carrier 113 can promote the positioning accuracy of camera lens 12, improve the precision of the optical axis of camera lens 12, promote the focusing performance of camera lens 12.

In addition, the contact area between the limiting boss 1131 and the inner top wall of the outer frame 1111 is small, so that the friction between the bearing part 113 and the inner top wall of the outer frame 1111 can be reduced; moreover, if the elastic piece is fixed on the supporting member 113, the limiting boss 1131 can also be matched with a positioning structure on the elastic piece to position the elastic piece.

Referring to fig. 11, for example, the outer contour of the carrier 113 is substantially cubic, and the limiting bosses 1131 may be disposed at four corners of the carrier 113.

Note that, if the fixing member 112 is fixed to the outer frame 1111, the bottom case 1112 may be mounted to the outer frame 1111 after the fixing member 112, the movable assembly, and the outer frame 1111 are assembled. In this regard, as shown in fig. 6, support columns 1123 may be further disposed on a surface of the fixing member 112 facing the inner top wall of the outer frame 1111, and for example, support columns 1123 are disposed at four corners of the fixing member 112 having a rectangular outer contour, and the support columns 1123 abut against four corners of the inner side wall of the outer frame 1111. On one hand, the supporting column 1123 and the inner side wall of the outer frame 1111 can be fixedly connected, so that the fixing piece 112 and the outer frame 1111 are fixedly connected; on the other hand, after the outer frame 1111 is assembled, the supporting columns 1123 may abut against an inner top wall of the outer frame 1111, and the supporting columns 1123 may serve as an auxiliary function for limiting a moving range of the supporting member 113.

S400, extracting the positioning gasket.

After the housing 111 of the driving device 11 is assembled outside the fixed member 112 and the movable assembly, the driving device 11 is assembled, and at this time, the positioning pad 16 is pulled out, so that the bearing member 113 can move between the fixed member 112 and the inner top wall of the outer frame 1111, and the stroke amount of the bearing member 113 is the thickness of the positioning pad 16. When the surface of the carrier 113 facing the fixing member 112 is attached to the fixing member 112, the lens 12 is located at a far focus position; when the carrier 113 moves to the position where the limit boss 1131 is attached to the inner top wall of the outer frame 1111, the lens 12 is located at the near focus position.

Thus, the stroke range of the bearing member 113 is mechanically limited by the positioning pad 16, the stroke amount of the bearing member 113 is precisely controlled, the bearing member 113 drives the lens 12 to switch between the far focus position and the near focus position, two-stage focusing of the lens 12 is realized, the high-precision driving function of the driving device 11 is realized, and the focusing speed of the lens 12 is improved.

It should be noted that, after the driving device 11 is assembled, in order to facilitate the extraction of the positioning pad 16, as shown in fig. 5, a part of the positioning pad 16 should be exposed outside the housing 111 of the driving device 11. Then, referring to fig. 10, when the positioning pad 16 is placed on the fixing member 112, the positioning pad 16 should be placed on the edge of the fixing member 112, so that a part of the positioning pad 16 overlaps the surface of the fixing member 112, and another part of the positioning pad 16 is suspended outside the fixing member 112.

The part of the positioning pad 16 overlapping the fixing member 112 is used for supporting the bearing member 113 and limiting the stroke amount of the bearing member 113; the positioning pad 16 is suspended outside the fixing member 112 and exposed outside the housing 111, so that the positioning pad 16 is drawn out.

Corresponding to the portion of the positioning pad 16 for limiting the stroke of the carrier 113 and the portion of the positioning pad 16 for pulling, the positioning pad 16 may include a positioning portion 161 and a mounting portion 162, at least a portion of the positioning portion 161 is overlapped on the fixing member 112, and the mounting portion 162 is suspended outside the fixing member 112; after the housing 111 of the driving device 11 is assembled, the mounting portion 162 is exposed outside the housing 111, and the user can draw out the positioning pad 16 by holding the mounting portion 162.

The size of the positioning part 161 can be designed according to the size of the driving device 11, and taking a mobile phone as an example, the width of the positioning part 161 of the positioning pad 16 can be smaller because the size of the driving device 11 in the mobile phone is tiny; in order to facilitate the user to draw out the positioning pad 16, the width of the mounting portion 162 exposed to the outside of the driving device 11 may be greater than the width of the positioning portion 161.

For example, the positioning pad 16 may be a "T-shaped" pad, and taking the positioning pad 16 placed on the first side 1121 of the fixing member 112 as an example, the positioning portion 161 of the positioning pad 16 may extend in a direction perpendicular to the extending direction of the first side 1121, and the mounting portion 162 of the positioning pad 16 may extend in a direction perpendicular to the positioning portion 161.

In addition, since the positioning pad 16 has a smaller overall size, in order to facilitate the extraction of the positioning pad 16, as shown in fig. 10, a gap may be formed between the mounting portion 162 of the positioning pad 16 and the edge of the fixing member 112, and after the driving device 11 is assembled, a gap may still be formed between the mounting portion 162 of the positioning pad 16 and the outer side wall of the outer frame 1111 of the housing 111, so that a user may conveniently grip more parts of the mounting portion 162 in the width direction of the mounting portion 162, and may better apply a force to the mounting portion 162 to extract the positioning pad 16.

It can be understood that the outer frame 1111 and the bottom shell 1112 of the driving device 11 are assembled to form the housing 111, for example, the edge of the outer frame 1111 is engaged with the bottom shell 1112, and the fixing member 112 is located inside the housing 111, so that the positioning portion 161 of the positioning pad 16 needs to extend into the housing 111. In contrast, as shown in fig. 6, a plurality of escape grooves 111b may be provided at intervals on the edge of the outer frame 1111, the escape grooves 111b correspond to the positioning portions 161 of the respective positioning spacers 16 one by one, and the portions of the positioning portions 161 of the positioning spacers 16 corresponding to the edge of the outer frame 1111 are located in the escape grooves 111 b. By providing the avoiding groove 111b on the outer frame 1111 to avoid the positioning portion 161, it is ensured that the outer frame 1111 can be stably connected to the bottom case 1112.

The side walls of the outer frame 1111 corresponding to the two sides of the first side 1121 and the second side 1122 of the fixing element 112 are defined as a first side wall (not shown) and a second side wall (not shown) of the outer frame 1111, and taking the positioning pad 16 disposed on the first side 1121 and the second side 1122 of the fixing element 112 as an example, the first side wall and the second side wall of the outer frame 1111 are both provided with avoiding grooves 111b corresponding to the positioning pad.

Wherein, the first sidewall of frame 1111 sets up at least one and dodges groove 111b, and the second sidewall interval of frame sets up at least two and dodges groove 111b, and exemplarily, a plurality of groove 111b of dodging on the second sidewall of frame can be close to the both ends setting of second sidewall respectively, and this is no longer repeated here.

As shown in fig. 12, the width of the avoiding groove 111b provided at the edge of the outer frame 1111 may be larger than the width of the positioning portion 161 of the positioning gasket 16, a gap may be provided between both sides of the positioning portion 161 of the positioning gasket 16 and the side wall of the avoiding groove 111b, and a gap may be provided between the bottom of the avoiding groove 111b and the surface of the positioning portion 161 of the positioning gasket 16. With such an arrangement, the positioning pad 16 can be smoothly drawn out after the driving device 11 is assembled.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims (19)

1. A method of assembling a driving apparatus for driving a lens to move, comprising:

placing at least two positioning gaskets on the surface of the fixed part facing the lens at intervals, wherein the positioning gaskets are placed on at least two opposite sides of the fixed part;

a movable assembly is arranged on the fixed piece, the lens is arranged on the movable assembly, and the bottom of the movable assembly is attached to the positioning gasket;

an outer frame is sleeved outside the fixed piece and the movable assembly, and the inner top wall of the outer frame is attached to the surface of the movable assembly, which is far away from the fixed piece;

and withdrawing the positioning gasket.

2. The assembly method of the driving device according to claim 1, wherein the positioning of at least two positioning spacers on the surface of the fixing member facing the lens at intervals comprises:

placing at least one of the locating shims on a first side of the fixture;

and at least two positioning gaskets are arranged on a second side, opposite to the first side, of the fixing piece at intervals.

3. The assembly method of the driving device according to claim 2, wherein the placing of at least two positioning spacers at a distance from a second side of the fixing member opposite to the first side comprises:

and at least one positioning gasket is respectively arranged on the second side of the fixing piece close to the two ends.

4. The assembly method of the driving device according to any one of claims 1 to 3, wherein the positioning of at least two positioning spacers on the surface of the fixing member facing the lens at intervals comprises:

placing the positioning gasket on the edge of the fixing piece; and one part of the positioning gasket is overlapped on the surface of the fixing piece, and the other part of the positioning gasket is suspended outside the fixing piece.

5. The assembly method of the driving device according to claim 4, wherein the positioning pad includes a positioning portion and a mounting portion, at least a part of the positioning portion is overlapped on the fixing member, and the mounting portion is suspended outside the fixing member.

6. The assembling method of the driving device according to claim 5, wherein a width of the mounting portion is larger than a width of the positioning portion.

7. The method of assembling a driving apparatus according to claim 5, wherein a gap is provided between the mounting portion and an edge of the fixing member.

8. The assembly method of the driving device according to any one of claims 1 to 3, wherein the step of sleeving an outer frame on the fixing member and the movable assembly comprises:

and sleeving the outer frame outside the movable assembly and the fixed piece from one side of the movable assembly along the optical axis direction of the lens, wherein the part of the positioning gasket is exposed outside the outer frame.

9. The assembling method of the driving device according to claim 8, wherein a plurality of avoiding grooves are formed at intervals on the edge of the outer frame, the avoiding grooves correspond to the positioning gaskets one to one, and the avoiding grooves are used for avoiding the positioning gaskets.

10. The method of assembling a driving apparatus according to claim 9, wherein a gap is provided between the spacer and a wall of the avoiding groove.

11. The method for assembling a driving device according to any one of claims 1 to 3, wherein the mounting of the movable assembly on the fixed member specifically comprises:

placing a bearing piece on the fixing piece, wherein the bottom of the bearing piece is attached to the positioning gasket; wherein the movable assembly comprises at least the carrier.

12. The assembly method of the driving device according to any one of claims 1 to 3, further comprising, before the placing of at least two spacer spacers on the surface of the fixing member facing the lens, the steps of:

providing a bottom shell;

and the fixing piece is arranged on the bottom shell.

13. A driving device for driving a lens of a camera module to move, wherein the driving device is assembled by the assembling method of any one of claims 1 to 12.

14. A driving device is used for driving a lens of a camera module to move and is characterized by comprising a fixing piece, a bearing piece and an outer frame, wherein the bearing piece is laminated on the fixing piece, and the outer frame is sleeved outside the fixing piece and the bearing piece; the bearing piece is sleeved on the outer side wall of the lens to support the lens and drive the lens to move;

the edge of the outer frame is provided with at least two avoiding grooves at intervals, the at least two avoiding grooves are respectively positioned on the side walls of the two opposite sides of the outer frame, and the avoiding grooves are used for enabling positioning gaskets to penetrate through the side walls of the outer frame and be clamped between the fixing piece and the bearing piece;

the bottom of the bearing piece is attached to the positioning gasket; the inner top wall of the outer frame is attached to the surface of the bearing piece, which deviates from the fixing piece.

15. The driving apparatus as claimed in claim 14, wherein a first side wall of the outer frame is provided with at least one of the avoiding grooves, and a second side wall of the outer frame opposite to the first side wall is provided with at least two of the avoiding grooves at intervals.

16. The driving apparatus as claimed in claim 15, wherein the second sidewall of the outer frame is provided with at least one of the avoiding grooves at positions close to the two ends thereof.

17. The driving device as claimed in any one of claims 14 to 16, wherein the surface of the bearing member facing away from the fixing member is provided with at least two opposite limiting bosses, and the limiting bosses are used for being abutted with the inner top wall of the outer frame.

18. The utility model provides a module of making a video recording which characterized in that includes: a lens barrel and a driving apparatus according to any one of claims 13 to 17, a side surface of a housing of the driving apparatus is provided with a mounting hole, and the lens barrel is accommodated in the housing through the mounting hole portion.

19. An electronic device comprising at least one camera module of claim 18.

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