CN115473981A

CN115473981A - Motor, camera module and assembling method thereof

Info

Publication number: CN115473981A
Application number: CN202110657212.7A
Authority: CN
Inventors: 阙嘉耀; 方银丽; 洪超; 周济; 王斌; 严春琦; 王阳; 谢义
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-12-13

Abstract

The assembling method of the camera module is used for uniformly finishing the assembling process of a photosensitive assembly and a motor in a module assembling factory so as to optimize the structural configuration of the camera module and improve the assembling efficiency of the camera module. Specifically, the camera module assembling method carries out modularized splitting on the motor and participates in a uniform assembling scheme of the camera module, so that the interior of the motor is convenient to clean and the structure of the motor is favorably optimized and adjusted.

Description

Motor, camera module and assembling method thereof

Technical Field

The application relates to the field of camera modules, in particular to a motor, a camera module and an assembling method of the camera module.

Background

With the popularization of mobile electronic devices, technologies related to camera modules applied to mobile electronic devices for assisting users in acquiring images (e.g., videos or images) have been rapidly developed and advanced.

The camera module comprises a circuit board, a photosensitive chip, a motor, an optical lens and other important components, wherein the motor is a driving element of the camera module and is used for driving an optical component in the camera module to move so as to achieve the purposes of optical focusing, optical anti-shake performance and the like. For example, in an image pickup module having an autofocus function, a motor is configured to drive an optical lens to move along an optical axis to perform autofocus.

In the existing packaging process of the camera module, a module factory purchases components such as a motor, an optical lens, a photosensitive chip and the like from different suppliers, and packages the components to obtain a complete camera module. That is, in the conventional packaging process of the camera module, the components such as the motor, the optical lens, and the photo sensor chip are provided by different suppliers, but the technical fields to which the components belong are different, the production environments are different, the requirements on the components are different, and the components need to be matched with each other to reduce the mutual interference. These reasons have led to the fact that the packaging process of current camera modules is relatively complicated, the industry chain length involved, and the cost of camera modules increase because of unnecessary assembly processes and parts.

Therefore, an optimized assembly method for a camera module is required.

Disclosure of Invention

An advantage of the present application is to provide a motor, a camera module and an assembling method thereof, which integrate the assembly of the motor into the assembly scheme of the camera module, so as to facilitate the optimization of the structure and the size design of the camera module, and improve the assembly efficiency and the efficiency of the camera module.

Another advantage of the present application is to provide a motor, a camera module and an assembling method thereof, wherein the assembling method splits the motor into a plurality of submodules and participates in an assembling scheme of the camera module, which is beneficial to reducing the number of overall assembling processes of the camera module and improving productivity and efficiency.

Another advantage of the present application is to provide a motor, a camera module and an assembling method thereof, wherein in the assembling method, the structure of the motor is heterogeneous through an integral molding process to reduce the assembling difficulty and improve the assembling precision between the motor components. In particular, in the present application, the motor base and the second elastic element are joined together by an integral molding process, so that the motor base forms the same support for mounting the second elastic element and the first elastic element, in such a way as to facilitate an improvement in the uniformity of the mounting of the second elastic element and the first elastic element.

Other advantages and features of the present application will become apparent from the following description and may be realized by means of the instrumentalities and combinations particularly pointed out in the appended claims.

To achieve at least one of the above advantages, the present application provides a motor including:

a motor base including a base body, a second elastic member integrally extending inward from the base body, and at least two support arms extending upward from the base body;

a first resilient element mounted to the at least two support arms;

a motor carrier mounted in a suspended manner between the second elastic element and the first elastic element, the motor carrier having a mounting cavity for mounting a lens group therein; and

and the coil and the magnet are used for driving the motor carrier to move and are arranged oppositely.

In the motor according to the present application, the second elastic member is integrally formed with the base body through an injection molding process.

In the motor according to the present application, the at least two support arms integrally extend upward from the base main body.

In the motor according to the present application, the at least two support arms are integrally formed with the base body through an injection molding process.

In the motor according to the present application, the second elastic element is disposed between the base main body and the at least two support arms.

In the motor according to the present application, a distance between the second elastic member and the lower surface of the base main body is equal to or greater than 100um.

In the motor according to the present application, the at least two support arms extend upward from the corner regions of the base body.

In the motor according to the present application, the at least two support arms include a first support arm, a second support arm, a third support arm, and a fourth support arm, wherein the first support arm, the second support arm, the third support arm, and the fourth support arm respectively integrally extend upward from four corner regions of the base main body.

In the motor according to the present application, an upper surface of the first support arm, an upper surface of the second support arm, an upper surface of the third support arm, and an upper surface of the fourth support arm are at the same level.

In the motor according to the present application, the motor base further includes at least two electrical connection terminals extending within the base main body, wherein the coil is electrically connected to the wiring board through the at least two electrical connection terminals.

In the motor according to the present application, the at least two electrical connection terminals include a first electrical connection terminal and a second electrical connection terminal, the first electrical connection terminal and the second electrical connection terminal being located on the same side of the base main body.

In the motor according to the present application, the electric connection terminal and the second elastic member have an integrated structure.

In a motor according to the present application, the second elastic element includes a second integral profile, at least a portion of which is integrally formed with the base body, a second integral internal profile, and a second suspension structure extending between the second integral profile and the second integral internal profile.

In the motor according to the present application, the second full profile and the second full inner profile are in the shape of a closed loop.

In a motor according to the application, the second elastic element comprises a first elastic part and a second elastic part, the first elastic part comprising a first half profile, a first half inner profile and a first suspension arm extending between the first half profile and the first half inner profile, the second elastic part comprising a second half profile, a second half inner profile and a second suspension arm extending between the second half profile and the second half inner profile, the first half profile and the second half profile forming the second full inner profile, wherein at least a part of the first half profile and at least a part of the second half profile are integrally formed with the base body.

In a motor according to the application, the first elastic element comprises a first complete outer profile, a first complete inner profile and a first suspension structure extending between the first complete outer profile and the first complete inner profile, wherein at least a part of the first complete outer profile is mounted to the upper surface of the at least two support arms.

In the motor according to the present application, the first entire outer contour and the first entire inner contour are in the shape of a closed ring.

In a motor according to the present application, the first elastic member includes a first elastic member and a second elastic member, the first elastic member includes a first half profile, a first half inner profile, and a first suspension arm extending between the first half profile and the first half inner profile, the second elastic member includes a second half profile, a second half inner profile, and a second suspension arm extending between the second half profile and the second half inner profile, the first half profile and the second half profile form the first full profile, the first half inner profile and the second half inner profile form the first full profile, wherein at least a portion of the first half profile is mounted to an upper surface of the support arm, and at least a portion of the second half profile is mounted to an upper surface of the support arm.

In the motor according to the present application, the coil is fixed to the outer circumferential wall of the motor carrier, wherein a distance between the second full inner contour of the second elastic member and the first full inner contour of the first elastic member is larger than a height dimension of the coil.

In the motor according to the present application, a second entire outer profile of the second elastic element is higher than a second entire inner profile of the second elastic element; and/or the first overall profile of the first elastic element is lower than the first overall inner profile of the first elastic element.

According to another aspect of the present application, there is also provided a camera module, which includes:

a photosensitive assembly;

the motor as described above mounted to the photosensitive assembly; and

and the lens group is arranged in the mounting cavity of the motor and is kept on a photosensitive path of the photosensitive assembly, and the lens group comprises at least one optical lens.

In the camera module according to the present application, the lens group is composed of the at least one optical lens, and the at least one optical lens is installed in the installation cavity of the motor carrier.

In the image pickup module according to the present application, the lens assembly further includes a lens barrel, and the at least one optical lens is mounted in the lens barrel.

According to another aspect of the present application, there is also provided an assembling method of a camera module, including:

providing a photosensitive assembly;

forming a motor base, wherein the motor base comprises a base body, a second elastic element integrally extending inwards from the base body, and at least two supporting arms extending upwards from the base body;

mounting the motor base on the photosensitive assembly;

mounting a motor carrier, on which a lens group and a coil are mounted, to the second elastic member;

mounting a first elastic element on the at least two support arms such that the motor carrier is suspended sandwiched between the second elastic element and the first elastic element;

mounting a magnet corresponding to the coil on the motor base; and

and the motor shell is sleeved to encapsulate the magnet, the coil and the motor carrier in an encapsulation cavity formed by the motor shell and the motor base.

In the method for assembling a camera module according to the present application, forming a motor base includes: providing a substrate main body, wherein the substrate main body is provided with a flat upper surface; and fixing the second elastic element on the upper surface of the substrate main body and integrally combining the second elastic element with the substrate main body through an injection molding process to form a motor substrate semi-finished product.

In the assembling method of the camera module according to the application, the substrate main body is formed by an injection molding process.

In the method for assembling a camera module according to the present application, forming a motor substrate further includes: and forming the at least two support arms on the motor base semi-finished product through an injection molding process.

Further objects and advantages of the present application will become apparent from an understanding of the ensuing description and drawings.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.

Fig. 1 illustrates a perspective exploded view of a camera module according to an embodiment of the present application.

Fig. 2 illustrates a schematic cross-sectional view of the camera module according to an embodiment of the present application.

Fig. 3 illustrates one of the schematic views of the motor of the camera module according to an embodiment of the present application.

Fig. 4 illustrates a second schematic diagram of the motor of the camera module according to the embodiment of the present application.

Fig. 5 illustrates a third schematic diagram of a motor of the camera module according to an embodiment of the present application.

Fig. 6 illustrates a schematic diagram of an electrical connection terminal of the motor according to an embodiment of the present application.

Fig. 7 illustrates a schematic diagram of a variant implementation of the second elastic element or the first elastic element of the motor according to an embodiment of the present application.

Fig. 8A to 8C are schematic diagrams illustrating an assembly process of the camera module according to an embodiment of the present application.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.

Summary of the application

As described above, in the conventional process for packaging a camera module, a module factory purchases components such as a motor, an optical lens, and a photo sensor chip from different suppliers, and packages the components to obtain a complete camera module. That is, in the existing packaging process of the camera module, the components such as the motor, the optical lens and the photo sensor chip are provided by different suppliers, but because the technical fields to which the components belong are different, the production environments are different, the requirements for the components are different, the components need to be matched with each other, and the interference between the components is reduced, which results in that the existing packaging process of the camera module is relatively complicated, the related industrial chain length is long, and the cost of the camera module is increased due to redundant assembly processes and parts.

More specifically, the motor is a relatively complex structure of the various components of the camera module, but the manufacturing environment requires relatively low components. The dust-free class requirements of motor manufacturing plants are relatively low, with the environment of the plant having much more dust than the manufacturing plant of the optical lens or the light-sensitive chip. Therefore, when the module factory adopts the traditional packaging technology, namely, the motor which is assembled and purchased from the motor factory is used for packaging the camera module, the dust carried on the motor can cause the serious dust pollution of the camera module.

Moreover, even if the motor is cleaned after being packaged as a standard component in a motor factory, dust may still be hidden inside the motor due to the complexity of the internal structure of the motor, and may escape from the inside of the motor and fall on the lens of the optical lens or the photosensitive surface of the photosensitive chip during the subsequent assembly process or the use process of the camera module, so that a black spot may exist in an image formed by the camera module, which may affect the imaging quality of the camera module.

In addition, with the development of mobile electronic devices, the camera module is increasingly developed toward large pixels, large apertures, light weight and thin thickness, which makes the requirements on the size and structure of the camera module higher. However, since the motor exists in the form of a complete module in the camera module, which is an almost unchangeable variable in the size and structural design of the camera module, there are few module factories attempting to optimize the structural and dimensional design of the camera module from the technical idea of optimizing the motor structure and the assembly process.

In view of the above technical problems, the technical idea of the present application is to integrate the assembly of the motor into the assembly scheme of the camera module, so that the assembly process of the motor becomes a part of the module packaging process, thereby optimizing the assembly process of the camera module from the perspective of a longer industrial chain and improving the assembly integration level and the assembly efficiency of the camera module. That is, in splitting the motor into a plurality of sub-modules and participating in the assembly scheme of the camera module, the number of the whole assembly processes of the camera module is reduced in such a way, and the productivity and the efficiency are improved. Accordingly, under such a technical concept, the internal structure of the motor may also be heterogeneous through a packaging process to optimize the component layout inside the motor.

Based on this, the application provides a module of making a video recording that is prepared by integrated form assembly process, and it includes: a photosensitive assembly; a motor mounted to the photosensitive assembly; and a lens group held on a photosensitive path of the photosensitive assembly in a manner of being mounted on the motor, wherein the lens group includes at least one optical lens; wherein, the motor includes: a motor base mounted to the mirror base, wherein the motor base includes a base main body, a second elastic element integrally extending inward from the base main body, and at least two support arms extending upward from the base main body; a first resilient element mounted to the at least two support arms; a motor carrier mounted in a suspended manner between the second elastic element and the first elastic element, the motor carrier having a mounting cavity, the lens group being mounted in the mounting cavity; and a coil and a magnet which are used for driving the motor carrier to move and are oppositely arranged.

Based on this, this application still provides the method of assembling of a camera module, and it includes: providing a photosensitive assembly; forming a motor base, wherein the motor base comprises a base body, a second elastic element integrally extending inwards from the base body, and at least two supporting arms integrally extending upwards from the base body; mounting the motor base on the photosensitive assembly; mounting a motor carrier, on which a lens group and a coil are mounted, to the second elastic member; mounting a first elastic element on the at least two support arms such that the motor carrier is suspended sandwiched between the second elastic element and the first elastic element; mounting a magnet corresponding to the coil on the motor base; and a motor housing is externally sleeved to encapsulate the magnet, the coil and the motor carrier in an encapsulation cavity formed by the motor housing and the motor base.

Having described the general principles of the present application, various non-limiting embodiments of the present application will now be described with reference to the accompanying drawings.

Exemplary camera module

As shown in fig. 1 and 2, a camera module according to an embodiment of the present application is illustrated, wherein the camera module is prepared based on an integrated assembly process (i.e., an assembly process of a motor is integrated in an assembly process of the camera module). Correspondingly, the module of making a video recording includes: the optical lens system comprises a photosensitive assembly 10, a motor 20 mounted on the photosensitive assembly 10, and a lens group 30 held on a photosensitive path of the photosensitive assembly 10 in a manner of being mounted in the motor 20, wherein the motor 20 is used for driving the lens group 30 to move so as to adjust optical performance, such as automatic focusing, optical anti-shake, optical zooming, and the like.

Accordingly, as shown in fig. 1 and fig. 2, in the embodiment of the present application, the photosensitive assembly 10 includes: the device comprises a circuit board 11, a photosensitive chip 12, a lens base 13 and a filter element 14, wherein the circuit board 11 is used as a mounting substrate of the photosensitive assembly 10. Specifically, the light sensing chip 12 is electrically connected to the circuit board 11 (for example, in an example, the light sensing chip 12 is mounted on the upper surface of the circuit board 11 and electrically connected to the circuit board 11 by a gold wire), so as to provide the control circuit and the electric energy required by the operation of the light sensing chip 12 through the circuit board 11.

The lens holder 13 is formed on the circuit board 11 for supporting other components, wherein the lens holder 13 has an optical window corresponding to at least a light sensing area of the light sensing chip 12. For example, in one particular example of the present application, the lens holder 13 is implemented as a separately molded plastic bracket that is attached to the surface of the circuit board 11 by an adhesive and is used to support other components. Of course, in other examples of the present application, the mirror base 13 can also be formed on the circuit board 11 in other manners, for example, the mirror base 13 is implemented as a molded mirror base which is integrally formed on a predetermined position of the circuit board 11 through a molding process.

Further, in some specific examples of the present application, the filter element 14 may be mounted on the lens base 13, so that the filter element 14 is maintained on a photosensitive path of the photosensitive chip 12, so that, in a process that the external light passes through the filter element 14 to reach the photosensitive chip 12, stray light in the external light can be filtered by the filter element 14, so as to improve imaging quality. It is worth mentioning that in other examples of the present application, the filter element 14 can also be mounted on the mirror base 13 in other ways, for example, a filter element holder is first provided on the mirror base 13, and then the filter element 14 is mounted on the filter element holder, that is, in this example, the filter element 14 can be indirectly mounted on the mirror base 13 through other supports. Of course, in other examples of the present application, the filter element 14 can also be installed at other positions of the image capturing module, for example, the filter element 14 is formed in the lens group 30 (for example, attached as a layer of filter film on a surface of one of the optical lenses of the lens group 30), and the present application is not limited thereto.

In order to increase the bottom strength of the photosensitive assembly 10, in some examples of the present application, the photosensitive assembly 10 further includes a reinforcing plate (not shown) disposed on the lower surface of the circuit board 11, for example, a steel plate may be disposed on the lower surface of the circuit board 11 to reinforce the strength of the circuit board 11 by the steel plate. Accordingly, the reinforcing plate may be configured to have a shape and a size conforming to the wiring board 11 to reinforce the entirety of the wiring board 11 after being stacked on the lower surface of the wiring board 11.

Further, in the example illustrated in fig. 1 and 2, the motor 20 is mounted on the upper surface of the mirror base 13, it should be understood that in other examples of the present application, the motor 20 may also be mounted on other positions of the photosensitive assembly 10, for example, on the circuit board 11 or the reinforcing plate, and the present application is not limited thereto. In particular, in the embodiment of the present application, the assembly process of the motor 20 is completed in the assembly process of the camera module, that is, the motor 20 is disassembled into a plurality of parts and participates in the assembly process of the camera module, which is beneficial to optimizing the overall structure and size of the motor 20 and the camera module. It will be appreciated that integrating the assembly process of the motor 20 into the assembly process of the camera module provides space and new possibilities for adjustment and optimization of the internal structure of the motor 20.

In the example illustrated in fig. 1 and 2, the motor 20 is implemented as an electromagnetic motor 20 comprising a motor base 21 mounted to the mirror base 13. In particular, in the present embodiment, the structure of the motor base 21 is made heterogeneous. Specifically, as shown in fig. 3, in this embodiment, the motor base 21 includes a base main body 211, a second elastic member 212 integrally extending inward from the base main body 211, and at least two support arms 213 extending upward from the base main body 211. That is, in the present embodiment, the base main body 211 and the second elastic member 212 have an integrated structure, so that the relative positional relationship between the base main body 211 and the second elastic member 212 can be fixed after being molded during the packaging process of the motor.

In the assembly process of the camera module, a substrate body 211 may be provided first, for example, the substrate body 211 is formed by an injection molding process; then, the second elastic member 212 is integrally coupled to the base body 211 through an injection molding process. Preferably, a portion of the upper surface of the substrate main body 211 for mounting the second elastic element 212 has a relatively high flatness, so as to improve the relative position accuracy of the substrate main body 211 and the second elastic element 212 after being molded. Accordingly, by adjusting the molding surface of the injection mold, the portion of the upper surface of the base main body 211 for mounting the second elastic element 212 may have a relatively high flatness.

It should be noted that, in other examples of the present application, the motor base 21 and the mirror base 13 of the photosensitive assembly 10 may also have an integrated structure, for example, the motor base 21 and the mirror base 13 are integrally formed and attached to the upper surface of the circuit board 11 through an injection molding process, and this is not a limitation of the present application.

Further, as shown in fig. 3, the motor 20 further includes: a first elastic element 22 mounted to the at least two support arms 213. That is, compared to the conventional motor, in the embodiment of the present application, the second elastic element 212 and the first elastic element 22 are simultaneously mounted on the motor base 21, or the second elastic element 212 and the first elastic element 22 are simultaneously mounted with reference to the motor base 21, so that the structural configuration is advantageous for improving the mounting uniformity between the second elastic element 212 and the first elastic element 22.

Further, as shown in fig. 3, the motor 20 further includes: a motor carrier 23 mounted in a suspended manner between the second elastic element 212 and the first elastic element 22; and a coil 24 and a magnet 25 which are used for driving the motor carrier 23 to move and are oppositely arranged, wherein the motor carrier 23 is provided with a mounting cavity, and the lens group is mounted in the mounting cavity. In order to prevent the interior of the motor 20 from being contaminated and electromagnetically shielded, the motor 20 further includes a motor housing 26 for enclosing the motor base 21, the motor carrier 23 and the coil 24-magnet 25 pair, wherein the motor housing 26 has an opening corresponding to the lens group 30 to allow external imaging light to enter the interior of the camera module through the opening.

In the example illustrated in fig. 1 and 2, the coil 24 is wound by an enamel wire, and the coil 24 is shaped by hot air baking during the winding process. In a specific implementation, the coil 24 may be wound directly onto the motor carrier 23, or may be mounted to the carrier after being pre-formed. The magnet 25 is opposed to the coil 24, and provides a permanent magnetic field to the coil 24. In a specific implementation, the magnet 25 may be mounted on the motor base 21 or mounted on the outer housing, and the magnet 25 is disposed opposite to the coil 24.

It should be understood that, in other examples of the present application, the installation position relationship between the coil 24 and the magnet 25 may be adjusted, and the installation positions of the coil 24 and the magnet 25 may be reversed, that is, the magnet 25 is installed on the motor carrier 23 and the coil 24 is installed on the motor base 21 or the motor housing 26, which is not limited by the present application.

More specifically, as shown in fig. 1 to 4, in the embodiment of the present application, the second elastic element 212 integrally formed with the motor base 21 through an injection molding process includes a positioning portion for positioning and a deformable portion capable of being deformed, wherein the deformable portion and the positioning portion are integrally formed and elastically connected, so that the deformable portion is deformable relative to the positioning portion when an external force is applied to the deformable portion. It should be understood that in the embodiment of the present application, the motor carrier 23 is suspended on the second elastic element 212, so that when the motor carrier 23 is displaced by the coil 24 and the magnet 25, the second elastic element 212 generates a reactive damping force to balance the electromagnetic force, so as to make the movement of the motor carrier 23 more smooth.

As shown in fig. 1 to 4, in this embodiment, the second elastic element 212 includes a second integral outline 2121, a second integral outline 2122 and a second suspension structure 2123 extending between the second integral outline 2121 and the second integral outline 2122, wherein at least a portion of the second integral outline 2121 is integrally formed with the base body 211, and the motor carrier 23 is mounted on the second integral outline 2122. Accordingly, the second integral contour 2121 and the second integral contour 2122 form the positioning portion, and the second suspension structure 2123 forms the deformation portion. Also, in this embodiment, the second suspension structure 2123 includes at least two spring wires extending between the second integral inner profile 2122 and the second integral outer profile 2121, such that the second integral inner profile 2122 is movable relative to the second integral outer profile 2121 by the at least two spring wires.

In specific implementations, the second elastic element 212 may have a split structure or have a unitary structure. Accordingly, when the second elastic element 212 has a one-piece structure, the second entire outer profile 2121 and the second entire inner profile 2122 are in the shape of a closed ring, for example, the second entire outer profile 2121 is in the shape of a closed rectangle, and the second entire inner profile 2122 is in the shape of a closed circle.

In the example illustrated in fig. 1-4, the second resilient element 212 has a split structure including a first resilient component 214 and a second resilient component 215, the first resilient component 214 including a first half-outline 2141, a first half-outline 2142, and first suspension arms 2143 extending between the first half-outline 2141 and the first half-outline 2142, the second resilient component 215 including a second half-outline 2151, a second half-outline 2152, and second suspension arms 2153 extending between the second half-outline 2151 and the second half-outline 2152, the first half-outline 2141 and the second half-outline 2151 forming the second full-outline 2121, the first half-outline 2142 and the second half-outline 2152 forming the second full-outline 2122, wherein at least a portion of the first half-outline 2141 and at least a portion of the second half-outline 2151 are integrally formed with the base substrate 215211.

Further, in the example as illustrated in fig. 1 to 4, the at least two support arms 213 integrally extend upward from the base main body 211, that is, in this embodiment, the at least two support arms 213 are a part of the motor base 21. In a specific implementation, the at least two support arms 213 may be further formed on the base body 211 and the second elastic element 212 through an injection molding process, that is, the at least two support arms 213 are formed on the base body 211 and the second elastic element 212 through a two-shot molding process. Of course, the base body 211, the second elastic element 212 and the at least two supporting arms 213 may also be formed by a one-time injection molding process, which is not limited in this application.

It should be noted that, as shown in fig. 1 to 4, in the embodiment of the present application, the second elastic element 212 is disposed between the base main body 211 and the at least two supporting arms 213. And, the distance between the second elastic element 212 and the lower surface of the substrate body 211 is greater than or equal to 100um.

In particular, in the example illustrated in fig. 1 to 4, the at least two support arms 213 extend upwards from a corner region of the base body 211. More specifically, in this example, the at least two support arms 213 include a first support arm 213, a second support arm 213, a third support arm 213, and a fourth support arm 213, wherein the first support arm 213, the second support arm 213, the third support arm 213, and the fourth support arm 213 integrally extend upward from four corner regions of the base body 211, respectively. Also, it is preferable that the upper surfaces of the first support arm 213, the second support arm 213, the third support arm 213, and the fourth support arm 213 are at the same level, so that the first elastic member 22 can be more smoothly mounted on the four support arms 213. In a specific implementation, the first elastic element 22 may be mounted on the four supporting arms 213 by an adhesive mounting, a hot riveting, or the like.

Further, as shown in fig. 1 to 4, the first elastic element 22 mounted on the at least two support arms 213 includes a positioning portion for positioning and a deformable portion capable of deforming, wherein the positioning portion and the deformable portion are integrally formed and elastically connected, so that when an external force is applied to the deformable portion, the deformable portion can deform relative to the positioning portion. Accordingly, the first elastic element 22 is used to limit the position of the motor carrier 23, and specifically, when the motor carrier 23 is displaced upward by the coil 24 and the magnet 25, the first elastic element 22 generates a reactive damping force for balancing the electromagnetic force.

As shown in fig. 1 to 4, in this embodiment, the first elastic element 22 includes a first entire outer profile 221, a first entire inner profile 222, and a first suspension structure 223 extending between the first entire outer profile 221 and the first entire inner profile 222, wherein at least a portion of the first entire outer profile 221 is mounted on the upper surface of the at least two support arms 213. Accordingly, the first entire outer contour 221 and the first entire inner contour 222 form the positioning portion, and the first suspension structure 223 forms the deformation portion. Also, in this embodiment, the first suspension structure 223 includes at least two spring wires extending between the first entire inner profile 222 and the first entire outer profile 221, so that the first entire inner profile 222 can move relative to the first entire outer profile 221 through the at least two spring wires.

In particular implementations, the first resilient element 22 may have a split-type structure or have a unitary structure. Accordingly, when the first elastic element 22 has a one-piece structure, the first entire outer contour 221 and the first entire inner contour 222 are in the shape of a closed ring, for example, the first entire outer contour 221 is in the shape of a closed rectangle, and the first entire inner contour 222 is in the shape of a closed circle, as shown in fig. 1 to 4.

Accordingly, when the first elastic member 22 has a split structure, it includes a first elastic member and a second elastic member, the first elastic member includes a first half profile, a first half inner profile and a first suspension arm extending between the first half profile and the first half inner profile, the second elastic member includes a second half profile, a second half inner profile and a second suspension arm extending between the second half profile and the second half inner profile, the first half profile and the second half outer profile form the first full profile, the first half inner profile and the second half inner profile form the first full inner profile, wherein at least a portion of the first half outer profile is mounted on the upper surface of the supporting arm 213, and at least a portion of the second half outer profile is mounted on the upper surface of the supporting arm 213.

It is worth mentioning that in the embodiment of the present application, the second elastic element 212 and the first elastic element 22 have a thin-plate structure, and the thickness dimension thereof is between 30um and 60 um.

It is also worth mentioning that when the coil 24 is fixed to the peripheral wall of the motor carrier 23, the distance between the second full inner profile 2122 of the second elastic element 212 and the first full inner profile 222 of the first elastic element 22 is preferably greater than the height dimension of the coil 24, so as to provide sufficient space for mounting the coil 24 on the motor carrier 23. Meanwhile, more preferably, a second entire outer contour 2121 of the second elastic element 212 is higher than a second entire inner contour 2122 of the second elastic element 212; and/or, the first overall profile 221 of the first elastic element 22 is lower than the first overall profile 222 of the first elastic element 22, which configuration is advantageous for increasing the driving stroke of the motor 20. That is, preferably, the distance between the second entire outer contour 2121 of the second elastic element 212 and the first entire outer contour 221 of the first elastic element 22 is smaller than the distance between the second entire inner contour 2122 of the second elastic element 212 and the first entire inner contour 222 of the first elastic element 22, and by such a size configuration, the driving stroke of the motor 20 is advantageously increased.

It should also be noted that in the embodiment of the present application, preferably, the upper surface of the first elastic element 22 is lower than the upper end surface of the motor carrier 23, and the lower surface of the second elastic element 212 is higher than the lower end surface of the motor carrier 23, so that the second elastic element 212 and the first elastic element 22 do not directly collide with other components, and the second elastic element 212 and the first elastic element 22 are prevented from being damaged.

In order to achieve electrical conduction of the coil 24, as shown in fig. 3 to 4, in this embodiment, the motor substrate 21 further includes at least two electrical connection terminals 27 extending within the substrate main body 211, wherein the coil 24 is electrically connected to the circuit board 11 through the at least two electrical connection terminals 27. That is, in the present embodiment, the motor base 21 further includes at least two electrical connection terminals 27 formed inside thereof, wherein the at least two electrical connection terminals 27 are used to conduct the coil 24 to the wiring board 11.

Specifically, as shown in fig. 5 and 6, in the embodiment of the present application, the at least two electrical connection terminals 27 include a first electrical connection terminal 27 and a second electrical connection terminal 27, and the first electrical connection terminal 27 and the second electrical connection terminal 27 are located on the same side of the substrate main body 211 to facilitate soldering between the electrical connection terminals 27 and the wiring board 11. Specifically, as shown in fig. 5 and 6, each of the electrical connection terminals 27 has an upper end portion exposed on the upper surface of the motor base 21 and a lower end portion opposite to the upper end portion, exposed below the motor base 21, and respectively used for electrically connecting electrical connection terminals of other components.

More specifically, in this embodiment, the coil 24 is mounted on the outer peripheral wall of the motor carrier 23, the coil 24 is electrically connected to the first elastic member 214 and the second elastic member 215 of the second elastic member 212, respectively, the first elastic member 214 is electrically connected to the upper end portion of the first electric connection terminal 27, the second elastic member 215 is electrically connected to the upper end portion of the second electric connection terminal 27, and further, the lower end portions of the first electric connection terminal 27 and the second electric connection terminal 27 are electrically connected to the wiring board 11, respectively, and by such an electrically conductive path, the coil 24 is electrically connected to the wiring board 11.

In a specific implementation, the at least two electrical connection terminals 27 may be integrally formed in the motor base 21 through an injection molding process. For example, in a specific example, the at least two electrical connection terminals 27 are first electrically connected to the first elastic member 214 and the second elastic member 215, respectively, by welding, and then the at least two electrical connection terminals 27, the first elastic member 214, and the second elastic member 215 are encapsulated in the motor substrate 21 by an injection molding process. For another example, the substrate main body 211 embedded with the at least two electrical connection terminals 27 may be formed by an injection molding process, wherein after the injection molding, an upper end portion of each electrical connection terminal 27 is exposed on an upper surface of the substrate main body 211, and a lower end portion thereof is exposed on a lower surface of the substrate main body 211; then, the second elastic element 212 is encapsulated and/or the at least two support arms 213 are formed by a two-shot molding process.

It should be noted that, in other examples of the present application, the electrical connection terminal 27 and the second elastic element 212 may have an integral structure, that is, the electrical connection terminal 27 and the second elastic element 212 are integrally formed, for example, they are formed by co-forming and then bending to form the electrical connection terminal 27. In the example illustrated in fig. 1 to 4, the at least two electrical connection terminals 27 are fixed to the lower side of the second elastic element 212 at an angle of about 90 ° with respect to the second elastic element 212, and then the second elastic element 212 and the at least two electrical connection terminals 27 are placed in a mold to form the motor substrate 21 through an injection molding process.

Further, as shown in fig. 1 to 4, in the embodiment of the present application, the lens group 30 includes a lens barrel 31 and at least one optical lens 32 installed in the lens barrel 31, wherein the lens barrel 31 of the lens group 30 is screwed into the installation cavity 230. That is, in one example, the lens barrel 31 has an external thread formed on an outer surface thereof, and the mounting cavity 230 has an internal thread formed therein, so that the lens group 30 is mounted in the mounting cavity 230 by mutual engagement between the external thread and the internal thread. Those skilled in the art will appreciate that the resolution of the lens group 30 is proportional to the number of optical lenses 32, i.e., the higher the resolution, the greater the number of optical lenses 32. Therefore, preferably, in the embodiment of the present application, the lens group 30 includes a plurality of optical lenses 32, for example, 4, 5, or 6 optical lenses 32.

It should be noted that, in the embodiment of the present application, the type of the lens group 30 is not limited in the present application, and it can be implemented as an integral optical lens, and can also be implemented as a split lens group 30. Specifically, when the lens group 30 is implemented as an integral lens group 30, the lens barrel 31 has an integral structure, and a plurality of pieces of the optical lenses 32 are assembled within the lens barrel 31. When the lens assembly 30 is implemented as a split lens, the lens barrel 31 includes at least two barrel units, and a plurality of optical lenses 32 are respectively assembled in the at least two barrel units to form a plurality of lens units, and the lens units are assembled together by active alignment to form the lens assembly 30.

It is worth mentioning that in the embodiment of the present application, the aperture of the opening of the motor housing 26 is smaller than the outer diameter of the assembly formed by the lens group 30 and the motor carrier 23. It can be understood that, in the embodiment of the present application, the lens group 30 participates in the assembly process of the image pickup module before the motor housing 26, that is, in the embodiment of the present application, after the motor housing 26 is assembled on the outer side of the motor 20, the lens group 30 does not need to be installed in the installation cavity 230 of the motor carrier 2322 through the opening, and therefore, the aperture of the opening of the motor housing 26 can be reduced. It can be understood that after the bore of the opening is reduced, the inside of the camera module is prevented from being entered by external dust and dirt. Preferably, in the embodiment of the present application, the aperture of the opening is smaller than or equal to the outer diameter of the lens group 30.

In addition to the functions of dust prevention and light entrance, the motor housing 26 can prevent magnetic leakage from interfering with an external magnetic field. That is, the motor housing 26 can also function as a magnetic shield.

In summary, the camera module according to the embodiment of the present application is illustrated, wherein the camera module is manufactured by a special assembly process, and specifically, the assembly scheme of the camera module integrates the assembly of the motor 20 into the assembly process of the camera module, so as to reduce the number of the overall assembly processes of the camera module and improve the productivity and efficiency.

Fig. 7 illustrates a schematic diagram of a variant implementation of the second elastic element 212 or the first elastic element 22 of the motor 20 according to an embodiment of the present application. When the second elastic element 212 or the first elastic element 22 has a split structure, for example, in the example illustrated in fig. 1 to 4, the second elastic element 212 includes a first elastic part 214 and a second elastic part 215 that are separated from each other, a bridge 216 may be further provided between the first elastic part 214 and the second elastic part 215, as illustrated in fig. 7, wherein the bridge 216 is integrally formed with a first half inner profile 2142 of the first elastic part 214 and a second half inner profile 2152 of the second elastic part 215 to connect the first elastic part 214 and the second elastic part 215, so that the uniformity during installation of the second elastic element 212 may be improved, i.e., it is advantageous to optimize the integral molding process of the second elastic element 212 and the substrate main body 211.

Accordingly, after the motor base 21 is molded, the bridge 216 may be cut by, for example, laser cutting, to obtain the first elastic member 214 and the second elastic member 215 separated from each other.

Assembling method of exemplary camera module

Fig. 8A to 8C are schematic diagrams illustrating an assembly process of the camera module according to an embodiment of the present application. Here, the assembly process illustrated in fig. 8A to 8C exemplifies the assembly of the image pickup module illustrated in fig. 1 to 4.

Specifically, the assembly process of the camera module comprises: firstly, a photosensitive assembly 10 is provided, wherein the photosensitive assembly 10 includes a circuit board 11, a photosensitive chip 12 electrically connected to the circuit board 11, and a lens holder 13 disposed on the circuit board 11. Specifically, a circuit board 11 may be provided first, and electronic components (e.g., capacitors, inductors, etc.) may be mounted on the circuit board 11 by SMT (Surface-mount Technology); then, the photosensitive chip 12 is mounted in the middle area of the circuit board 11 and the photosensitive chip 12 is electrically connected to the circuit board 11 by means of gold wire bonding; further, the lens holder 13 is attached to the wiring board 11 by an adhesive.

Next, the motor base 21 having a heterogeneous structure is formed through an integral molding process. In one specific example, the process of forming the motor base 21 includes: firstly, providing a substrate body 211, preferably, the substrate body 211 has a flat upper surface; then, fixing the second elastic element 212 on the upper surface of the substrate main body 211 and integrally combining the second elastic element 212 with the substrate main body 211 through an injection molding process to form a motor substrate 21 semi-finished product; next, the at least two support arms 213 are formed on the motor base 21 semi-finished product through an injection molding process.

In this particular example, the second elastic element 212 has a split structure, including a first elastic member 214 and a second elastic member 215. Accordingly, during assembly, the first elastic member 214 and the second elastic member 215 are first placed on the substrate body 211, and the first elastic member 214 and the second elastic member 215 are electrically connected (for example, by means of conductive adhesive or soldering); then, the first elastic member 214 and the second elastic member 215 are coated by an injection molding process to form a semi-finished product of the motor substrate 21; further, the at least two support arms 213 are formed on the motor base 21 semi-finished product by an injection molding process.

It should be understood that, in other examples of the present application, the at least two supporting arms 213 may also be formed simultaneously with the first elastic member 214 and the second elastic member 215 in a single injection molding process, that is, after the first elastic member 214 and the second elastic member 215 are placed on the base body 211, the first elastic member 214 and the second elastic member 215 are covered by an injection molding process, and at least two supporting arms 213 are formed upward from four corner regions of the base body 211.

It is worth mentioning that when the base body 211 is an injection molded part, it may provide a flat mounting surface for the second elastic element 212, and the at least two supporting arms 213 formed by the injection molding process may also provide a flat mounting surface for the first elastic element 22, so that when the first elastic element 22 is mounted on the at least two supporting arms 213 by the hot riveting process, etc., a better parallelism between the second elastic element 212 and the first elastic element 22 can be maintained.

Correspondingly, the assembly process of the camera module further comprises: the first elastic element 22 is mounted on the at least two support arms 213 such that the motor carrier 23 is suspended and sandwiched between the second elastic element 212 and the first elastic element 22.

Then, a magnet 25 corresponding to the coil 24 is mounted on the motor base 21. Next, a motor case 26 is externally fitted to enclose the magnets 25, the coils 24, and the motor carrier 23 in an enclosure formed by the motor case 26 and the motor base 21.

In summary, the method for assembling the camera module according to the embodiment of the present application is clarified, and the assembly of the motor 20 is integrated into the assembly scheme of the camera module, so as to facilitate the optimization of the structure and the size design of the camera module, and improve the assembly efficiency and the efficiency of the camera module. In addition, the assembly method divides the motor 20 into a plurality of sub-modules and participates in the assembly scheme of the camera module, so that the number of the whole assembly processes of the camera module is reduced, and the productivity and the efficiency are improved.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A motor, comprising:

a first resilient element mounted to the at least two support arms;

and the coil and the magnet are oppositely arranged and used for driving the motor carrier to move.

2. The motor of claim 1, wherein the second elastic element is integrally formed with the base body through an injection molding process.

3. The motor of claim 2, wherein the at least two support arms integrally extend upward from the base body.

4. The motor of claim 3, wherein the at least two support arms are integrally formed with the base body by an injection molding process.

5. The motor according to claim 4, wherein the second elastic element is disposed between the base body and the at least two support arms.

6. The motor of claim 5, wherein a distance between the second elastic member and the lower surface of the base body is greater than or equal to 100um.

7. The motor of claim 4, wherein the at least two support arms extend upwardly from a corner region of the base body.

8. The motor of claim 7, wherein the at least two support arms include a first support arm, a second support arm, a third support arm, and a fourth support arm, wherein the first support arm, the second support arm, the third support arm, and the fourth support arm each integrally extend upward from four corner regions of the base body.

9. The motor of claim 8, wherein the upper surface of the first support arm, the upper surface of the second support arm, the upper surface of the third support arm, and the upper surface of the fourth support arm are at the same level.

10. The motor of claim 5, wherein the motor base further comprises at least two electrical connection terminals extending within the base body, wherein the coil is adapted to be electrically connected to a circuit board through the at least two electrical connection terminals.

11. The motor of claim 10, wherein the at least two electrical connection terminals include a first electrical connection terminal and a second electrical connection terminal, the first and second electrical connection terminals being located on a same side of the base body.

12. The motor according to claim 10, wherein the electrical connection terminal and the second elastic member have an integrated structure.

13. The motor of claim 4, wherein the second resilient element comprises a second integral outer contour, a second integral inner contour, and a second suspension structure extending between the second integral outer contour and the second integral inner contour, at least a portion of the second integral outer contour being integrally formed with the base body.

14. The motor of claim 13, wherein the second full outer profile and the second full inner profile are in the shape of a closed loop.

15. The motor of claim 13, wherein the second resilient element comprises a first resilient component and a second resilient component, the first resilient component comprising a first half outline, and first cantilevered arms extending between the first half outline and the first half outline, the second resilient component comprising a second half outline, and second cantilevered arms extending between the second half outline and the second half outline, the first half outline and the second half outline forming the second full outline, wherein at least a portion of the first half outline and at least a portion of the second half outline are integrally formed with the base body.

16. The motor according to claim 14 or 15, wherein the first elastic element comprises a first integral profile, a first integral inner profile, and a first suspension structure extending between the first integral profile and the first integral inner profile, wherein at least a portion of the first integral profile is mounted to the upper surface of the at least two support arms.

17. The motor of claim 16, wherein the first full outer profile and the first full inner profile are in the shape of a closed loop.

18. The motor of claim 16, wherein the first resilient element comprises a first resilient member and a second resilient member, the first resilient member comprising a first half profile, a first half inner profile, and a first cantilevered arm extending between the first half profile and the first half inner profile, the second resilient member comprising a second half profile, a second half inner profile, and a second cantilevered arm extending between the second half profile and the second half inner profile, the first half profile and the second half profile forming the first full inner profile, wherein at least a portion of the first half profile is mounted to the upper surface of the support arm and at least a portion of the second half profile is mounted to the upper surface of the support arm.

19. The motor of claim 16, wherein the coil is secured to an outer peripheral wall of the motor carrier, wherein a distance between a second full inner profile of the second resilient element and a first full inner profile of the first resilient element is greater than a height dimension of the coil.

20. The motor of claim 19, wherein a second overall profile of the second elastic element is higher than a second overall internal profile of the second elastic element; and/or the first overall profile of the first elastic element is lower than the first overall inner profile of the first elastic element.

21. The utility model provides a module of making a video recording which characterized in that includes:

a photosensitive assembly;

the motor of any one of claims 1 to 20 mounted to the photosensitive assembly; and

the lens group is arranged in the installation cavity of the motor and is kept on a photosensitive path of the photosensitive assembly, and the lens group comprises at least one optical lens.

22. The camera module of claim 21, wherein the lens assembly is comprised of the at least one optical lens mounted within a mounting cavity of the motor carrier.

23. The camera module of claim 21, wherein the lens assembly further comprises a barrel, the at least one optical lens being mounted within the barrel.

24. An assembling method of a camera module is characterized by comprising the following steps:

providing a photosensitive assembly;

mounting the motor base on the photosensitive assembly;

mounting a first elastic element on the at least two support arms so that the motor carrier is suspended and clamped between the second elastic element and the first elastic element;

mounting a magnet corresponding to the coil on the motor base; and

a motor case is externally sleeved to enclose the magnet, the coil and the motor carrier in an enclosure formed by the motor case and the motor base.

25. The method of assembling a camera module of claim 24, wherein forming a motor base comprises:

providing a substrate main body, wherein the substrate main body is provided with a flat upper surface;

and fixing the second elastic element on the upper surface of the base main body and integrally combining the second elastic element with the base main body through an injection molding process to form a motor base semi-finished product.

26. The method of assembling a camera module of claim 25, wherein the base body is formed by an injection molding process.

27. The method of assembling a camera module of claim 25, wherein forming a motor base further comprises:

forming the at least two support arms on the motor base semi-finished product through an injection molding process.