Actuating motor, camera module and electronic device

Abstract

This disclosure relates to an actuation motor, a camera module, and an electronic device, specifically in the field of camera technology. The actuation motor includes a slider, a first slide rail, and a second slide rail. The slider has a first groove and a second groove. The first groove extends along a first coordinate axis, and the second groove extends along a second coordinate axis. The corresponding intervals of the first and second grooves on a third coordinate axis at least partially overlap. The first slide rail is slidably connected to the first groove, and the second slide rail is slidably connected to the second groove. In this way, the corresponding intervals of the first and second slide rails on the third coordinate axis can at least partially overlap, meaning that the first and second slide rails share at least a portion of the height space of the actuation motor, thereby reducing the overall height of the actuation motor and facilitating the thinner and lighter design of electronic devices.

Description

Technical Field

[0001] This disclosure relates to the field of camera technology, and in particular to an actuation motor, camera module and electronic device. Background Technology

[0002] With the advancement of technology, users have increasingly higher requirements for the shooting functions and image quality of various electronic devices. In order to improve the image quality of camera modules, actuation motors (or actuators) are set inside the camera modules. The actuation motor can drive the lens to move on a plane perpendicular to the optical axis, thereby achieving optical image stabilization (OIS).

[0003] In related technologies, the actuator motor typically employs a double-layered sliding shaft structure. One layer of sliding rail and slider achieves movement in one direction within a plane, while another layer of sliding rail is added above the slider to achieve movement in another direction within a different plane. The two directions of movement are perpendicular to each other, enabling the lens to move on a plane perpendicular to the optical axis, thereby ensuring the optical image stabilization function of the actuator motor.

[0004] The superposition of two layers of slide rails and sliders results in a relatively high overall height of the actuation motor, which is not conducive to the requirement of making electronic devices thinner and lighter. Utility Model Content

[0005] This disclosure provides an actuation motor, a camera module, and an electronic device, which can solve the aforementioned technical problems existing in related technologies. The technical solution is as follows:

[0006] In a first aspect, an actuation motor is provided, the actuation motor comprising a slider, a first slide rail, and a second slide rail;

[0007] The slider has a first groove and a second groove, the first groove extends along the direction of the first coordinate axis, the second groove extends along the direction of the second coordinate axis, and the corresponding intervals of the first groove and the second groove on the third coordinate axis at least partially overlap.

[0008] The first slide rail is slidably connected to the first slide groove, and the second slide rail is slidably connected to the second slide groove.

[0009] In some possible implementations, the first coordinate axis and the second coordinate axis are perpendicular to each other.

[0010] In some possible implementations, both the first groove and the second groove are one of a trapezoidal groove, a V-shaped groove, or an arc groove.

[0011] In some possible implementations, there are multiple first grooves, and the multiple first grooves are symmetrically distributed along the center line of the second groove.

[0012] In some possible implementations, the plurality of the first grooves are of the same size.

[0013] In some possible implementations, the slider has multiple weight-reduction zones symmetrically distributed on both sides of the first slide rail, and / or, the weight-reduction zones symmetrically distributed on both sides of the second slide rail.

[0014] In some possible implementations, the slider is a plastic slider.

[0015] In some possible implementations, both the first slide rail and the second slide rail are metal slide rails.

[0016] In a second aspect, a camera module is provided, the camera module including the motor described in any one of the first aspects.

[0017] Thirdly, an electronic device is provided, the electronic device including the camera module described in the second aspect.

[0018] The beneficial effects of the technical solution provided in this disclosure include at least the following:

[0019] In this disclosure, the corresponding intervals of the first slide rail and the second slide rail on the third coordinate axis at least partially overlap. Thus, the corresponding intervals of the first slide rail and the second slide rail on the third coordinate axis can at least partially overlap, meaning that the first slide rail and the second slide rail share at least a portion of the height space of the actuation motor, thereby reducing the overall height of the actuation motor and facilitating the thinner and lighter requirements of electronic devices.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded schematic diagram of an actuation motor provided in an embodiment of this disclosure.

[0023] Figure 2 This is an exploded schematic diagram of an actuation motor provided in an embodiment of this disclosure.

[0024] Figure 3 This is a schematic diagram of the structure of a slider provided in an embodiment of this disclosure.

[0025] Figure 4 This is a schematic diagram of the structure of an actuation motor provided in an embodiment of this disclosure.

[0026] Figure label:

[0027] 1. Slider; 11. First slide rail; 12. Second slide rail; 1a. Weight reduction zone;

[0028] 2. First slide rail;

[0029] 3. Second slide rail;

[0030] X, the first coordinate axis; Y, the second coordinate axis; Z, the third coordinate axis.

[0031] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0033] This disclosure provides an actuator motor, with reference to... Figure 1 As shown, the actuation motor includes a slider 1, a first slide rail 2, and a second slide rail 3.

[0034] The slider 1 has a first slide groove 11 and a second slide groove 12. The first slide groove 11 extends along the first coordinate axis X direction, and the second slide groove 12 extends along the second coordinate axis Y direction. The corresponding intervals of the first slide groove 11 and the second slide groove 12 on the third coordinate axis Z at least partially overlap. The first slide rail 2 is slidably connected to the first slide groove 11, and the second slide rail 3 is slidably connected to the second slide groove 12.

[0035] The plane formed by the first coordinate axis X and the second coordinate axis Y is parallel to the plane formed by the length extension direction and the width extension direction of the actuation motor, and the third coordinate axis Z corresponds to the height direction of the actuation motor.

[0036] Using the actuation motor disclosed herein, the first slide rail 2 and the second slide rail 3 are respectively located in the first slide groove 11 and the second slide groove 12 inside the slider 1, and the corresponding interval ranges of the first slide groove 11 and the second slide groove 12 on the third coordinate axis Z at least partially overlap. In this way, the corresponding interval ranges of the first slide rail 2 and the second slide rail 3 on the third coordinate axis Z can at least partially overlap, that is, the first slide rail 2 and the second slide rail 3 share at least part of the height space of the actuation motor, thereby reducing the overall height of the actuation motor, which is beneficial to the requirement of thinner and lighter electronic devices.

[0037] In some embodiments, refer to Figure 1 and Figure 4 As shown, the opening directions of the first slide rail 11 and the second slide rail 12 are the same. This ensures that the first slide rail 2 and the second slide rail 3 are assembled in the same direction, which helps to shorten the assembly time of the actuator motor and improve its assembly efficiency.

[0038] In other embodiments, reference is made to Figure 2 As shown, the opening directions of the first slide groove 11 and the second slide groove 12 are opposite. The opposite direction of the slide groove opening can balance the stress distribution of the slider 1 when it is subjected to force, reduce stress concentration, and improve the overall strength and durability of the slider 1. The opposite direction of the slide groove opening can also increase the structural stability of the slider 1, reduce the vibration and deformation of the slider 1, and improve the overall mechanical performance of the actuation motor.

[0039] The groove openings in opposite directions can also serve as an assembly error prevention design to prevent incorrect assembly positions of the first slide rail 2 and the second slide rail 3, thereby improving the assembly reliability of the actuation motor.

[0040] In some embodiments, both the first slide rail 2 and the second slide rail 3 are metal slide rails. Using metal for the first slide rail 2 and the second slide rail 3 has several advantages. First, metal has high strength and rigidity, which enhances the overall structural strength of the actuator motor and prevents deformation, breakage, or detachment of the actuator motor in the event of drops, impacts, or other external forces. Second, metal slide rails can quickly dissipate the heat generated by friction between the slide rails (including the first slide rail 2 and the second slide rail 3) and the slider 1, preventing localized overheating of the actuator motor that could lead to lubrication failure or material softening. Third, metal is easy to process, enabling high-precision dimensional and shape control, ensuring the fitting accuracy between the slide rails (including the first slide rail 2 and the second slide rail 3) and the slider 1, and improving the stability and reliability of the actuator motor's mechanical movement.

[0041] This disclosure does not specify the type of metal used for the first slide rail 2 and the second slide rail 3. The metal can be selected according to parameters such as strength requirements, manufacturing costs, and precision requirements. For example, steel, aluminum alloy, etc.

[0042] The first slide rail 2 and the second slide rail 3 can each use the same type of metal. This eliminates the need for assemblers to determine the material of the slide rails, simplifying the assembly process. Alternatively, the first slide rail 2 and the second slide rail 3 can use different types of metal, selected to match the load magnitude at the slide rail distribution locations. For example, refer to... Figure 2As shown, the first slide rail 2 needs to bear the load of the slider 1, the second slide rail 3 and the lens module. Therefore, the first slide rail 2 can be made of a metal material with high strength and rigidity. The second slide rail 3 only needs to bear the load of the lens module. Therefore, the second slide rail 3 can be made of a metal material with lower strength and rigidity. In this way, the structural strength at the stress concentration point is guaranteed, and the overall weight and manufacturing cost of the actuation motor can be appropriately reduced.

[0043] In some embodiments, slider 1 is a plastic slider. First, using a plastic slider in conjunction with a metal slide rail can effectively reduce the noise generated during the relative sliding of slider 1 and slide rail, improving the user experience of the camera module and electronic device. Second, the density of plastic is lower than that of metal, so using a plastic slider can reduce the weight of slider 1, reduce the load on the actuator motor, and improve the motion efficiency of the actuator motor. Third, plastic is a good insulating material, which can effectively isolate static electricity from interference or damage to the lens module.

[0044] This disclosure does not limit the specific plastic type of slider 1, and it can be matched and set according to parameters such as the friction coefficient requirement, processing cost and expected life of slider 1. For example, slider 1 is an engineering plastic (such as polytetrafluoroethylene PTFE, nylon, etc.) slider. Engineering plastics have certain self-lubricating properties, which can reduce the friction coefficient of slider 1, thereby reducing the relative sliding resistance between slider 1 and the groove, extending the working life of slider 1, and reducing the dependence of the actuator motor on lubricant.

[0045] In some embodiments, refer to Figure 3 As shown, the first coordinate axis X and the second coordinate axis Y are perpendicular to each other. The first slide groove 11 and the second slide groove 12, which are orthogonally distributed, can decompose the movement of the lens module on the plane formed by the first coordinate axis X and the second coordinate axis Y into independent movements of the first coordinate axis X and the second coordinate axis Y. In this way, the calculation of the movement trajectory of the slider 1 and the second slide rail 3 can be simplified, and the control difficulty of the actuation motor can be reduced.

[0046] Meanwhile, the orthogonally distributed first slide groove 11 and second slide groove 12 are easier to design and manufacture, reducing the processing difficulty and manufacturing cost of slider 1; the orthogonally distributed first slide groove 11 and second slide groove 12 make fault diagnosis of the actuator motor simpler and facilitate disassembly and replacement maintenance.

[0047] In some embodiments, the first groove 11 and the second groove 12 are both trapezoidal grooves, V-shaped grooves, and arc grooves.

[0048] Since the first slide rail 2 and the first slide groove 11, and the second slide rail 3 and the second slide groove 12 are all subject to sliding friction, setting the first slide groove 11 and the second slide groove 12 as one of trapezoidal groove, V-shaped groove, and arc groove can reduce the contact area between the first slide rail 2 and the first slide groove 11, and the contact area between the second slide rail 3 and the second slide groove 12, thereby reducing the friction between the first slide rail 2 and the first slide groove 11, and the friction between the second slide rail 3 and the second slide groove 12, and thus reducing the energy consumption of the actuation motor.

[0049] This disclosure does not specifically limit the shape of the first slide rail 2 and the second slide rail 3, and they can be matched and set according to the shape of the first slide groove 11 and the second slide groove 12. For example, refer to Figure 1 As shown, the second slide groove 12 is a trapezoidal groove, and the second slide rail 3 is a cylindrical slide rail, so that the second slide rail 3 and the second slide groove 12 have two line contacts; in another example, the first slide groove 11 is an arc-shaped groove, and the first slide rail 2 is a prism-shaped slide rail, so that the first slide rail 2 and the first slide groove 11 are in contact at the side edge of the prism-shaped slide rail, so that the first slide rail 2 and the first slide groove 11 have line contact.

[0050] Compared to the surface contact of the slide rail and the slide groove, the line contact of the slide rail and the slide groove can effectively reduce the contact area between the slide rail and the slide groove, thereby reducing the friction between the slide rail and the slide groove, and thus reducing the energy consumption of the actuator motor.

[0051] In some embodiments, the inner walls of the first slide rail 11 and the second slide rail 12 have protrusions. In this way, the first slide rail 2 and the first slide rail 11, and the second slide rail 3 and the second slide rail 12 are in point contact, which further reduces the contact area between the slide rail and the slide rail and reduces the friction between the slide rail and the slide rail.

[0052] In some embodiments, refer to Figure 1 and Figure 2 As shown, there are multiple first grooves 11, and the multiple first grooves 11 are symmetrically distributed along the center line of the second groove 12.

[0053] In this way, the slider 1 has a structure in which the second slide groove 12 is located in the middle and the first slide groove 11 is located on both sides. The symmetrical distribution of the first slide groove 11 can make the stress distribution on both sides of the second slide groove 12 more uniform, reduce the wear of the first slide groove 11 and the first slide rail 2 on one side, and improve the stability and service life of the actuation motor.

[0054] In some other embodiments, there are multiple second slides 12, and the multiple second slides 12 are symmetrically distributed along the center line of the first slide 11.

[0055] In this way, the slider 1 has a structure in which the first slide groove 11 is located in the middle and the second slide groove 12 is located on both sides. The symmetrically distributed second slide groove 12 can make the stress distribution on both sides of the first slide groove 11 more uniform, reduce the wear of the second slide groove 12 and the second slide rail 3 on one side, and improve the stability and service life of the actuation motor.

[0056] In some embodiments, the multiple first slide grooves 11 have the same size. The first slide grooves 11 with the same size parameters can simplify the processing technology of the slider 1 and improve the processing efficiency of the slider 1. On the other hand, each first slide groove 11 can correspond to the first slide rail 2 with the same size parameters, thereby reducing the assembly difficulty of the first slide groove 11 and the first slide rail 2. The assembler does not need to judge the correspondence between the first slide grooves 11 and the first slide rail 2 with different size parameters.

[0057] In some embodiments, refer to Figure 3 As shown, the slider 1 has multiple weight-reduction zones 1a, which are symmetrically distributed on both sides of the first slide rail 2, and / or symmetrically distributed on both sides of the second slide rail 3. The weight-reduction zones 1a effectively reduce the weight of the slider 1, thereby reducing the power consumption of the corresponding drive element of the actuation motor.

[0058] This disclosure does not limit the specific structure of the weight reduction zone 1a. It can be matched and set according to the size parameters of the weight reduction zone 1a, the target weight of the slider 1, etc. For example, weight reduction groove, weight reduction hole, honeycomb structure, curved or streamlined outer edge or biomimetic structure (e.g., bone structure or plant stem structure).

[0059] Based on the same concept, this disclosure also provides a camera module, which may include the actuation motor as in any of the above embodiments. The camera module has the same beneficial effects as the actuation motor provided in the above embodiments, and will not be repeated here.

[0060] The lens module of the camera module is connected to the second slider 3, the first slider 2 is connected to the base of the camera module, the second slider 3 drives the lens module to move along the second coordinate axis Y, and the slider 1 drives the second slider 3 and the lens module to move along the first coordinate axis X. The lens module can move on the plane formed by the first coordinate axis X and the second coordinate axis Y, thereby realizing the optical image stabilization of the camera module.

[0061] This disclosure also provides an electronic device, which may include the camera module as described in the above embodiments.

[0062] The electronic devices involved in this disclosure may also be referred to as terminals, mobile terminals, terminal devices, user equipment (UE), etc. For example, a terminal device may be a smartphone, tablet computer, laptop computer, wearable device (e.g., smart bracelet, smartwatch, smart helmet, smart glasses), or it may be a digital camera, SLR camera / mirrorless camera, gimbal camera, action camera, drone, or other professional shooting equipment. It may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, electronic device in a 5G network, or electronic device in a future evolved Public Land Mobile Network (PLMN), etc. It should be understood that this disclosure does not specifically limit the specific technology or device form adopted by the terminal device. In the description of the above embodiments, a mobile phone is used as an example, but this disclosure is not limited thereto.

[0063] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this disclosure. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0065] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0066] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0067] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0068] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the scope of the claims.

[0070] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An actuation motor, characterized by The actuating motor includes a slider (1), a first slide rail (2), and a second slide rail (3); The slider (1) has a first groove (11) and a second groove (12). The first groove (11) extends along the first coordinate axis (X) and the second groove (12) extends along the second coordinate axis (Y). The corresponding ranges of the first groove (11) and the second groove (12) on the third coordinate axis (Z) at least partially overlap. The first slide rail (2) is slidably connected to the first slide groove (11), and the second slide rail (3) is slidably connected to the second slide groove (12).

2. The actuation motor according to claim 1, characterized in that, The first coordinate axis (X) and the second coordinate axis (Y) are perpendicular to each other.

3. The actuation motor according to claim 1, characterized in that, The first groove (11) and the second groove (12) are both one of trapezoidal groove, V-shaped groove and arc groove.

4. The actuation motor according to claim 1, characterized in that, There are multiple first grooves (11), and the multiple first grooves (11) are symmetrically distributed along the center line of the second groove (12).

5. The actuation motor according to claim 4, characterized in that, The first grooves (11) are all the same size.

6. The actuation motor according to claim 1, characterized in that, The slider (1) has multiple weight reduction zones (1a) symmetrically distributed on both sides of the first slide rail (2) and / or symmetrically distributed on both sides of the second slide rail (3).

7. The actuation motor according to claim 1, characterized in that, The slider (1) is a plastic slider.

8. The actuation motor according to claim 1, characterized in that, Both the first slide rail (2) and the second slide rail (3) are metal slide rails.

9. An image capture module, comprising: The camera module includes an actuation motor as described in any one of claims 1-8.

10. An electronic device, comprising: The electronic device includes the camera module as described in claim 9.

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