Driving motor, camera module and electronic device

Abstract

The application discloses a driving motor, a camera module and an electronic device. The driving motor comprises a shell, a carrier, a driving assembly and an elastic assembly. The carrier is located in the shell and is used for carrying a lens. The driving assembly is connected with the shell and the carrier and is used for driving the carrier to move relative to the shell. The elastic assembly is connected with the shell and the carrier and is used for supporting the carrier. The elastic assembly comprises a waterproof layer and an elastic part, and the waterproof layer wraps the elastic part.

Description

Technical Field

[0001] This application belongs to the field of drive motor technology, specifically relating to a drive motor, a camera module, and an electronic device. Background Technology

[0002] Currently, for the mobile phone industry, improving the focusing and image stabilization performance of cameras is a research direction that various mobile phone companies are vying to study. In the camera motor, the spring is a key component that connects the stator and the power source.

[0003] Since cameras are imaging devices, if debris falls into the path of the imaging light, black spots will appear in the captured images. Therefore, ultrasonic cleaning is usually used to reduce the presence of black spots before shipment. However, ultrasonic cleaning carries a significant risk of causing the spring contacts to break, thereby reducing the yield rate. Therefore, how to reduce the spring contact wear rate during camera cleaning has become an urgent problem to be solved. Summary of the Invention

[0004] This application aims to provide a drive motor, camera module, and electronic device that at least solves the problem of spring breakage when the camera is cleaned.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose a drive motor, comprising:

[0007] case;

[0008] The carrier, located inside the housing, is used to support the lens;

[0009] A drive assembly, connected to the housing and the carrier, is used to drive the carrier to move relative to the housing; an elastic assembly, connected to the housing and the carrier, is used to support the carrier, and includes a waterproof layer and an elastic part, with the waterproof layer covering the elastic part.

[0010] Secondly, embodiments of this application propose a camera module, including:

[0011] Lens;

[0012] For example, in the first aspect, the drive motor connects the lens to the carrier.

[0013] Thirdly, embodiments of this application provide an electronic device including a camera module as described in the second aspect.

[0014] In the embodiments of this application, this problem can be perfectly solved by incorporating a waterproof layer into the design of the elastic component of the drive motor. During ultrasonic water washing, the drive motor will inevitably be immersed in water. Because a waterproof layer of viscose fiber is added to the elastic component, the waterproof layer protects the elastic component, preventing water erosion and structural damage, thus preventing damage to the elastic component and eliminating the risk of breakage. Furthermore, ultrasonic water washing can greatly reduce debris, thereby improving image quality.

[0015] It should be noted that when adding a waterproof layer to an elastic component, the waterproof layer can be distributed at various locations within the elastic component, or it can be placed at locations prone to breakage to reduce the risk of breakage. Alternatively, in addition to the elastic part being encased in a waterproof layer, the waterproof layer can also provide a connection function independently in locations where no elastic part is provided.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is an exploded view of a drive motor according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the waterproof layer and the elastic part according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the driving component according to an embodiment of this application.

[0021] Figure label:

[0022] 100 Housing, 110 Base, 120 Outer shell, 200 Carrier, 300 Drive assembly, 310 Coil, 320 Magnet, 400 Elastic assembly, 410 Waterproof layer, 411 Receiving part, 420 Elastic part, 430 First elastic support part, 440 Second elastic support part, 450 Elastic connection part, 460 First elastic assembly, 470 Second elastic assembly. Detailed Implementation

[0023] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following is combined with Figures 1-3 This application describes a drive motor, a camera module, and an electronic device according to embodiments thereof.

[0027] like Figure 1 As shown, a drive motor according to some embodiments of this application includes: a housing 100, a carrier 200, a drive assembly 300, and an elastic assembly 400. The carrier 200 is located inside the housing 100 and is used to support a lens. The drive assembly 300 is connected to the housing 100 and the carrier 200, and is used to drive the carrier 200 to move relative to the housing 100. The elastic assembly 400 is connected to the housing 100 and the carrier 200, and is used to support the carrier 200. The elastic assembly 400 includes a waterproof layer 410 made of adhesive fibers.

[0028] The carrier 200 is used to support the lens. When the drive assembly 300 drives the carrier 200 to move relative to the housing 100, the position of the lens changes, thereby achieving functions such as focusing and / or image stabilization. An elastic component 400 is provided between the carrier 200 and the housing 100. When the carrier 200 moves relative to the housing 100, the elastic component 400 deforms, allowing it to support the carrier 200 and prevent it from shaking.

[0029] The elastic component 400 has a higher hardness, requiring a larger force to drive the carrier 200. Conversely, the elastic component 400 has a lower hardness, allowing it to be driven with a smaller force. In related technologies, the design of springs tends to be relatively soft, meaning even slight external excitation can cause the spring to vibrate violently. Therefore, for spring-type motors, ultrasonic cleaning poses a significant risk of spring breakage, resulting in reduced yield and indicating a design flaw.

[0030] By incorporating the waterproof layer 410 into the design of the elastic component 400 of the drive motor, this problem can be perfectly solved. During ultrasonic water washing, the drive motor will inevitably be immersed in water. Because the viscose fiber waterproof layer 410 is added to the elastic component 400, the waterproof layer 410 protects the elastic component 400, preventing the elastic part 420 from being corroded by water and causing structural damage. This prevents damage to the elastic component 400 and eliminates the risk of breakage. Furthermore, ultrasonic water washing can greatly reduce debris, thereby improving image quality.

[0031] It should be noted that when adding a waterproof layer 410 to the elastic component 400, the waterproof layer 410 can be distributed at various locations of the elastic component 400, or it can be placed at locations in the elastic component 400 that are prone to breakage, thereby reducing the risk of breakage of the elastic component 400. Alternatively, in addition to the elastic part 420 being wrapped by the waterproof layer 410, the waterproof layer 410 can also be used to achieve a connection function independently at locations where the elastic part 420 is not provided.

[0032] By using the elastic part 420 and the waterproof layer 410 in combination, the processing cost of the elastic component 400 can be controlled, and the flexibility requirements of the elastic component 400 can be met.

[0033] In some embodiments, the waterproof layer 410 may optionally include an adhesive fiber portion.

[0034] Viscose fiber is a synthetic fiber material that hardens when exposed to water. The main reason for this hardening is that the composite material, composed of polymers such as polypropylene, undergoes molecular structural changes in water, resulting in a rigidifying effect. When the material is wetted, water from the polymer penetrates into the molecules and reacts chemically with some of the solid components, producing a hardening effect similar to cement. During water penetration, the polymers composing the viscose fiber form chemical bonds with small molecules in the water, leading to a rearrangement of the molecular chains and ultimately hardening the entire material.

[0035] Therefore, the elastic component 400 hardens and becomes more rigid when exposed to water, making it virtually impossible for it to crack due to ultrasonic vibrations. After cleaning and drying, the elastic component 400 softens again, thus not affecting the image stabilization and focusing functions of the drive motor.

[0036] Viscose fiber materials harden when wet and soften when dry. During ultrasonic washing, the elastic component 400 hardens, increasing its rigidity; during evaporation and drying, the elastic component 400 softens again, restoring its designed driving effect. This allows the drive motor to perform ultrasonic washing without the risk of the elastic component 400 breaking. Furthermore, ultrasonic washing significantly reduces debris, thereby improving image quality.

[0037] It should be noted that when adding a waterproof layer 410 to the elastic component 400, the waterproof layer 410 can be distributed at various locations of the elastic component 400, or the waterproof layer 410 can be set at locations in the elastic component 400 that are prone to breakage, thereby reducing the risk of breakage of the elastic component 400.

[0038] Combination Figure 1 and Figure 2 As shown, in some embodiments, optionally, the waterproof layer 410 is provided with a receiving portion 411, and the elastic portion 420 is located inside the receiving portion 411.

[0039] In this embodiment, the elastic component 400 adopts a two-layer structure. The middle interlayer structure is the elastic part 420, which can maintain the overall stiffness of the system. Around the elastic part 420, a layer of viscose fiber material is wrapped. This material is very soft when dry, but becomes very hard when wet.

[0040] For example, the elastic part 420 is a copper alloy (C1990).

[0041] In other embodiments, the waterproof layer 410 and the elastic part 420 may also adopt other matching methods. For example, the waterproof layer 410 and the elastic part 420 may be stacked and attached to each other, or the waterproof layer 410 and the elastic part 420 may have multiple layers, with the elastic part 420 located between two layers of waterproof layer 410, or the waterproof layer 410 may be located between two layers of elastic part 420, etc.

[0042] In some embodiments, optionally, one side of the waterproof layer 410 is connected to the carrier 200, and the other side of the waterproof layer 410 is connected to the housing 100.

[0043] The waterproof layer 410 is connected to the carrier 200 and the shell 100 on both sides respectively. The carrier 200 and the shell 100 are connected through the waterproof layer 410, so the waterproof layer 410 can directly support the carrier 200.

[0044] Waterproof layers 410 are distributed throughout the elastic component 400 from the carrier 200 to the shell 100, which can prevent the elastic component 400 from breaking when exposed to water, and enable the elastic component 400 to stably support the carrier 200.

[0045] In some embodiments, optionally, one side of the elastic portion 420 is connected to the carrier 200, and the other side of the elastic portion 420 is connected to the housing 100.

[0046] The carrier 200 and the shell 100 are connected to the two sides of the elastic part 420 respectively. The carrier 200 and the shell 100 are connected by the waterproof layer 410 and the elastic part 420. Thus, the carrier 200 is supported by the waterproof layer 410 and the elastic part 420 together, so that the elastic part has the advantages of being soft and having low driving force, and not being easy to break.

[0047] In one possible application, the material ratio of the elastic part 420 and the waterproof layer 410 to the entire elastic component 400 is also very important. The stiffness of the entire system can be balanced by varying the ratio of these two materials, allowing the system to harden upon contact with water while still meeting the required thrust. Various proportions of the elastic part 420 and the waterproof layer 410 are within the scope of this embodiment.

[0048] Combination Figure 1 and Figure 3 As shown, in some embodiments, optionally, the elastic component 400 includes: a first elastic support portion 430 and a second elastic support portion 440. The first elastic support portion 430 is connected to the carrier 200, and one end of the waterproof layer 410 is connected to the first elastic support portion 430. The second elastic support portion 440 is connected to the housing 100, and the other end of the waterproof layer 410 is connected to the second elastic support portion 440.

[0049] The elastic component 400 in this embodiment includes an outer frame (second elastic support 440), an inner frame (first elastic support 430), and a waterproof layer 410. The waterproof layer 410 connects the outer frame and the inner frame, and the outer frame, waterproof layer 410, and inner frame are bonded together using an adhesive.

[0050] By redesigning the materials and structure of the elastic component 400, the elastic component 400 can simultaneously possess the functions of a spring and hardening upon contact with water. Thus, during the ultrasonic cleaning process, the elastic component 400 hardens upon contact with water, improving the overall rigidity of the system and eliminating the risk of breakage of the elastic component 400.

[0051] An elastic part 420 is provided inside the waterproof layer 410.

[0052] Combination Figure 1 and Figure 3 As shown, in some embodiments, the elastic component 400 may optionally include an elastic connecting portion 450, one end of which is connected to the first elastic support portion 430, and the other end of which is connected to the second elastic support portion 440.

[0053] A waterproof layer 410 and an elastic connecting portion 450 are provided between the first elastic support portion 430 and the second elastic support portion 440. The elastic connecting portion 450 provides elasticity and can modify its spring system. The waterproof layer 410 provides the function of hardening when exposed to water. Therefore, the elastic component 400 has the advantages of adjustable elasticity and resistance to breakage when exposed to water.

[0054] For example, the elastic connection 450 is made of copper alloy.

[0055] In other embodiments, the waterproof layer 410 and the elastic connection 450 may be a stacked structure between the first elastic support portion 430 and the second elastic support portion 440, or the elastic connection 450 may be accommodated inside the waterproof layer 410.

[0056] Combination Figure 1 and Figure 3 As shown, in some embodiments, the waterproof layer 410 may optionally be separated from the elastic connection portion 450.

[0057] Since there is no connection between the waterproof layer 410 and the elastic connection part 450, the waterproof layer 410 and the elastic connection part 450 can be installed separately between the first elastic support part 430 and the second elastic support part 440. Therefore, the waterproof layer 410 and the elastic connection part 450 can be processed separately, which can reduce the processing difficulty of both.

[0058] The elastic connection part 450 is an independent component, so an elastic connection part 450 with a specific elastic coefficient can be used in the elastic assembly 400 according to the usage requirements.

[0059] For example, both the first elastic support portion 430 and the second elastic support portion 440 are annular structures. Four installation areas are formed between the first elastic support portion 430 and the second elastic support portion 440 in the circumferential direction. Each installation area is provided with a waterproof layer 410 and an elastic connection portion 450. Both the waterproof layer 410 and the elastic connection portion 450 are spring wire structures.

[0060] like Figure 1 As shown, in some embodiments, optionally, the housing 100 includes a base 110 and an outer shell 120, which are connected. Exemplarily, the base 110 and the outer shell 120 are fastened together by a fastening member. The elastic component 400 includes a first elastic component 460 and a second elastic component 470. The first elastic component 460 is connected to the base 110 and the carrier 200, and the second elastic component 470 is connected to the outer shell 120 and the carrier 200. The first elastic component 460 and the second elastic component 470 are an upper spring sheet and a lower spring sheet, used to improve the stability of the carrier 200.

[0061] The drive assembly 300 includes a magnet 320 and a coil 310. The magnet 320 is fixed on the housing 100, and the coil 310 is fixed on the carrier 200. When the coil 310 is energized, the magnetic field generated by the coil 310 interacts with the magnet 320, so that the coil 310 can drive the carrier 200 to move.

[0062] In an embodiment of this application, a camera module is proposed, comprising: a lens and a drive motor as described in any of the above embodiments, wherein the lens is connected to a carrier. The camera module in this embodiment can achieve the technical effects of any of the above embodiments, and will not be elaborated further here.

[0063] The lens is mounted on a carrier and can move with the carrier to achieve functions such as focusing and image stabilization.

[0064] In the embodiments of this application, an electronic device is proposed, which includes the camera module in the above embodiments and can achieve the same technical effect, and will not be described again here.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A drive motor, characterized in that, include: case; A carrier, located within the housing, is used to support the lens; A drive assembly, connected to the housing and the carrier, is used to drive the carrier to move relative to the housing; An elastic component is connected to the housing and the carrier, the elastic component is used to support the carrier, and the elastic component includes a waterproof layer and an elastic part, the waterproof layer covering the elastic part; The waterproof layer includes a viscose fiber portion, which is made of a synthetic fiber material that hardens when wet and softens when dry.

2. The drive motor according to claim 1, characterized in that, The waterproof layer has a receiving portion, and the elastic portion is located inside the receiving portion.

3. The drive motor according to claim 1, characterized in that, One side of the waterproof layer is connected to the carrier, and the other side of the waterproof layer is connected to the shell.

4. The drive motor according to claim 1, characterized in that, One side of the elastic part is connected to the carrier, and the other side of the elastic part is connected to the shell.

5. The drive motor according to claim 1, characterized in that, The resilient component also includes: A first elastic support portion is connected to the carrier, and one end of the waterproof layer is connected to the first elastic support portion; The second elastic support is connected to the housing, and the other end of the waterproof layer is connected to the second elastic support.

6. The drive motor according to claim 5, characterized in that, The resilient component also includes: An elastic connecting part, one end of which is connected to the first elastic support part, and the other end of which is connected to the second elastic support part.

7. The drive motor according to claim 6, characterized in that, The waterproof layer is separated from the elastic connection portion.

8. The drive motor according to claim 1, characterized in that, The driving component includes: A coil is disposed on the carrier; A magnet is disposed on the housing. When the coil is energized, the magnetic field generated by the coil interacts with the magnet.

9. The drive motor according to claim 1, characterized in that, The housing includes a base and an outer shell, and the base and the outer shell are connected. The elastic component includes a first elastic component and a second elastic component. The first elastic component is connected to the base and the carrier, and the second elastic component is connected to the outer shell and the carrier.

10. A camera module, characterized in that, include: Lens; The drive motor as described in any one of claims 1 to 9, wherein the lens is connected to the carrier.

11. An electronic device, characterized in that, Includes the camera module as described in claim 10.

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