Lens driving motor, imaging device, and electronic apparatus

Abstract

The utility model provides a lens driving motor, a camera device and electronic equipment. The lens driving motor includes: a housing assembly; at least one part of the lens supporting body is movably arranged in the shell assembly; the two ends of the elastic piece abut against the lens supporting body and the shell assembly respectively; the two ends of the SMA wire are connected with the shell assembly respectively, and at least one part of the SMA wire abuts against the lens supporting body; when the SMA wires are powered on, the SMA wires drive the lens supporting body to move in the optical axis direction, and the elastic piece is compressed or stretched. The lens driving motor solves the problem of poor use performance of the lens driving motor in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of camera devices, and in particular to a lens driving motor, a camera device and electronic equipment. Background Art

[0002] At present, the camera modules in some mobile terminals use shape memory alloys (SMA) motors, which use current to control the expansion and contraction of SMA wires to achieve optical focus and anti-shake functions. Since SMA wires occupy a small volume and have high energy density, they can effectively reduce the volume of camera modules, so they have been widely studied. In order to achieve stable drive, the current SMA motors require up to 8 SMA wires, which leads to problems such as difficulty in assembly and high difficulty in driving algorithm control.

[0003] Therefore, there is a problem in the prior art that the lens driving motor has poor performance. Utility Model Content

[0004] The main purpose of the utility model is to provide a lens driving motor, a camera device and an electronic device to solve the problem of poor performance of the lens driving motor in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a lens drive motor is provided, including: a shell assembly; a lens support body, at least a part of the lens support body is movably arranged inside the shell assembly; at least one elastic member, two ends of the elastic member are respectively abutted against the lens support body and the shell assembly; at least one SMA wire, two ends of the SMA wire are respectively connected to the shell assembly, and at least a part of the SMA wire is abutted against the lens support body; when the SMA wire is energized, the SMA wire drives the lens support body to move along the optical axis direction, and the elastic member is compressed or stretched.

[0006] Further, at least one circumferential side wall of the lens support body has at least one overlapping protrusion, and at least a portion of each SMA wire abuts against the overlapping protrusion.

[0007] Furthermore, the SMA wire and the overlapping protrusion are both one, and the distances from the overlapping protrusion to the two ends of the lens support body where the overlapping protrusion is located are the same.

[0008] Furthermore, the circumferential side wall of the lens support body has a lap boss extending toward the circumferential side wall of the housing assembly, and the lap protrusion is arranged on the lap boss.

[0009] Further, the overlapping protrusion is cylindrical; and / or the circumferential side wall of the overlapping protrusion has a positioning groove for accommodating the SMA wire.

[0010] Furthermore, the circumferential side wall of the shell assembly is provided with an avoidance gap corresponding to the overlapping protrusion, and the two ends of the SMA wire are respectively arranged at the two ends of the avoidance gap.

[0011] Furthermore, the lens driving motor further comprises at least two claws, and the end of each SMA wire is respectively arranged on the circumferential side wall of the housing assembly through the claws, and the housing assembly is electrically connected to the claws.

[0012] Furthermore, the lens driving motor further comprises at least two baffles, each clamping claw is arranged corresponding to at least one baffle, and at least a portion of the baffle covers the outer surface of the clamping claw.

[0013] Furthermore, the circumferential side wall of the shell assembly is provided with at least two positioning columns corresponding to the claws, each claw cooperates with at least one positioning column, and the claws and the baffle are both provided with positioning holes corresponding to the positioning columns.

[0014] Furthermore, the lens drive motor also includes a plurality of balls, and the circumferential side walls of the lens support body and the circumferential side walls of the shell assembly have relatively arranged rolling grooves corresponding to the balls, and the rolling grooves extend along the optical axis direction of the lens support body, and the balls are movably arranged in the space enclosed by the rolling grooves on the lens support body and the rolling grooves on the shell assembly.

[0015] Furthermore, the rolling groove and the SMA wire on the housing assembly are respectively arranged on a group of oppositely arranged circumferential side walls of the housing assembly.

[0016] Furthermore, the lens driving motor also includes a magnetic attraction component, at least a portion of the magnetic attraction component is arranged on the housing component, and at least another portion of the magnetic attraction component is correspondingly arranged on the lens support body.

[0017] Furthermore, the magnetic attraction component and the rolling groove are both located on the same side wall of the lens support body or the shell component, and two rolling grooves are provided on the lens support body and the shell component, and the two rolling grooves are symmetrically arranged about the magnetic attraction component.

[0018] Furthermore, one of the two rolling grooves on the housing assembly and / or the lens support is a V-shaped groove, and the other is a U-shaped groove.

[0019] Furthermore, the elastic member is a compression spring, and both ends of the compression spring are respectively in contact with the bottom surface of the lens support body and the bottom surface of the shell assembly. After the SMA wire is energized, the SMA wire drives the lens support body to move in a direction close to the bottom surface of the shell assembly, and the compression spring is compressed; or the two ends of the compression spring are respectively in contact with the top surface of the lens support body and the top surface of the shell assembly. After the SMA wire is energized, the SMA wire drives the lens support body to move in a direction close to the top surface of the shell assembly, and the compression spring is compressed.

[0020] Furthermore, the elastic member is a tension spring, and both ends of the tension spring are respectively abutted against the bottom surface of the lens support body and the bottom surface of the shell assembly. After the SMA wire is energized, the SMA wire drives the lens support body to move in a direction close to the top surface of the shell assembly, and the tension spring is stretched; or the two ends of the tension spring are respectively abutted against the top surface of the lens support body and the top surface of the shell assembly. After the SMA wire is energized, the SMA wire drives the lens support body to move in a direction close to the bottom surface of the shell assembly, and the tension spring is stretched.

[0021] Furthermore, there are multiple elastic parts, and the multiple elastic parts are arranged at intervals around the periphery of the top surface or the bottom surface of the lens support body; and / or the lens drive motor also includes multiple mounting gaskets, and the lens support body and the shell assembly are respectively provided with mounting gaskets at both ends of the elastic parts corresponding to the lens support body, and the two ends of the elastic parts are respectively connected to the corresponding mounting gaskets; and / or the shell assembly and / or the lens support body are provided with mounting grooves corresponding to the elastic parts.

[0022] According to another aspect of the present invention, a camera device is provided, comprising the above-mentioned lens driving motor.

[0023] According to another aspect of the present invention, an electronic device is provided, comprising the above-mentioned camera device.

[0024] The technical solution of the utility model is applied, and the lens driving motor in the present application includes a housing assembly, a lens support body, at least one elastic member and at least one SMA wire. At least a part of the lens support body is movably arranged inside the housing assembly; the two ends of the elastic member are respectively in contact with the lens support body and the housing assembly; the two ends of the SMA wire are respectively connected to the housing assembly, and at least a part of the SMA wire is in contact with the lens support body; when the SMA wire is energized, the SMA wire drives the lens support body to move along the optical axis, and the elastic member is compressed or stretched.

[0025] When using the lens drive motor in the present application, since the lens drive motor includes at least one elastic member and at least one SMA wire, after the SMA wire is energized, the SMA wire contracts and drives the lens support body to move along the optical axis, thereby realizing the AF movement of the lens support body, that is, the focusing movement of the lens support body. In addition, since the lens support body stretches or compresses the elastic member during the movement, when the SMA wire is powered off, the lens support body can perform a reset movement along the optical axis under the action of the reset force of the elastic member. Therefore, the lens drive motor in the present application can realize the focusing movement of the lens support body only through at least one SMA wire. Therefore, compared with the existing SMA motor, the lens drive motor in the present application can realize the focusing of the lens while using fewer SMA wires, has a more streamlined structure, and effectively reduces the difficulty of assembly and the difficulty of driving algorithm control. Therefore, the lens drive motor in the present application effectively solves the problem of poor performance of the lens drive motor in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 A schematic structural diagram of a lens driving motor according to a specific embodiment of the utility model is shown;

[0028] Figure 2 Shows Figure 1 An exploded view of the lens drive motor in FIG.

[0029] Figure 3 Shows Figure 1 Schematic diagram of the internal structure of the lens drive motor;

[0030] Figure 4 Shows Figure 1 A schematic diagram of the positional relationship between the lens support body and the elastic member of the lens driving motor;

[0031] Figure 5 Shows Figure 1 A schematic diagram of the positional relationship of the base, ball bearings, SMA wires and magnetic suction components of the housing assembly of the lens drive motor;

[0032] Figure 6 Shows Figure 3 Top view of the lens drive motor in FIG.

[0033] The above drawings include the following reference numerals:

[0034] 10. Shell assembly; 11. Avoidance gap; 12. Positioning column; 13. Mounting groove; 14. Shell; 15. Base; 20. Lens support body; 21. Overlap protrusion; 22. Overlap boss; 30. Elastic member; 40. SMA wire; 50. Claw; 51. Baffle; 60. Ball; 61. Rolling groove; 611. V-shaped groove; 612. U-shaped groove; 70. Magnetic suction assembly; 80. Mounting gasket. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0038] In order to solve the problem of poor performance of lens drive motors in the prior art, the present application provides a lens drive motor, a camera device and an electronic device.

[0039] Furthermore, the camera device in the present application includes the lens drive motor described below, and the electronic device in the present application may be a mobile terminal such as a mobile phone, a laptop computer, a tablet computer, etc. having the camera device in the present application.

[0040] like Figures 1 to 6 As shown, the lens driving motor in the present application includes a housing assembly 10, a lens support body 20, at least one elastic member 30 and at least one SMA wire 40. At least a portion of the lens support body 20 is movably disposed inside the housing assembly 10; two ends of the elastic member 30 are respectively in contact with the lens support body 20 and the housing assembly 10; two ends of the SMA wire 40 are respectively connected to the housing assembly 10, and at least a portion of the SMA wire 40 is in contact with the lens support body 20; when the SMA wire 40 is energized, the SMA wire 40 drives the lens support body 20 to move along the optical axis, and the elastic member 30 is compressed or stretched.

[0041] When the lens drive motor in the present application is used, since the lens drive motor includes at least one elastic member 30 and at least one SMA wire 40, after the SMA wire 40 is powered on, the SMA wire 40 contracts and drives the lens support body 20 to move along the optical axis, thereby realizing the AF movement of the lens support body 20, that is, the focusing movement of the lens support body 20. In addition, since the lens support body 20 will stretch or compress the elastic member 30 during the movement, when the SMA wire 40 is powered off, the lens support body 20 can perform a reset movement along the optical axis under the action of the reset force of the elastic member 30. Therefore, the lens drive motor in the present application can realize the focusing movement of the lens support body 20 only through at least one SMA wire 40. Therefore, compared with the existing SMA motor, the lens drive motor in the present application can realize the focusing of the lens while using fewer SMA wires 40, and the structure is more streamlined, and the assembly difficulty and the control difficulty of the driving algorithm are effectively reduced. Therefore, the lens drive motor in the present application effectively solves the problem of poor performance of the lens drive motor in the prior art.

[0042] In a specific embodiment of the present application, the elastic member 30 is a compression spring, and the two ends of the compression spring are respectively abutted against the bottom surface of the lens support body 20 and the bottom surface of the shell assembly 10. After the SMA wire 40 is energized, the SMA wire 40 drives the lens support body 20 to move in a direction close to the bottom surface of the shell assembly 10, and the compression spring is compressed; or the two ends of the compression spring are respectively abutted against the top surface of the lens support body 20 and the top surface of the shell assembly 10. After the SMA wire 40 is energized, the SMA wire 40 drives the lens support body 20 to move in a direction close to the top surface of the shell assembly 10, and the compression spring is compressed.

[0043] In another specific embodiment of the present application, the elastic member 30 is a tension spring, and both ends of the tension spring are respectively abutted against the bottom surface of the lens support body 20 and the bottom surface of the shell assembly 10. After the SMA wire 40 is energized, the SMA wire 40 drives the lens support body 20 to move in a direction close to the top surface of the shell assembly 10, and the tension spring is stretched; or the two ends of the tension spring are respectively abutted against the top surface of the lens support body 20 and the top surface of the shell assembly 10. After the SMA wire 40 is energized, the SMA wire 40 drives the lens support body 20 to move in a direction close to the bottom surface of the shell assembly 10, and the tension spring is stretched.

[0044] It can be seen from the above two different embodiments that in the present application, depending on the different elastic members 30 selected, when the SMA wire 40 is energized and drives the lens support body 20 to move, the state of the elastic member 30 is different, that is, the elastic member 30 can be stretched or compressed, so as to provide a reset force for the lens support body 20 after the SMA wire 40 is de-energized.

[0045] Furthermore, it should be noted that, in order to ensure the stability of the SMA wire 40 when it is not energized, when the elastic member 30 is a compression spring, the compression spring can be in a compressed state even if the SMA is not energized; and when the elastic member 30 is a tension spring, the tension spring can be in a stretched state even if the SMA is not energized. This ensures that the lens support 20 does not shake inside the housing assembly 10. Of course, when the SMA wire 40 is not energized, due to the length limitation of the SMA wire 40, the SMA wire 40 will also exert a force on the lens support 20, and at this time, the direction of the force exerted by the SMA wire 40 on the lens support 20 is opposite to the direction of the force exerted by the elastic member 30 on the lens support 20.

[0046] Of course, in the present application, other parts may also be selected as the elastic member 30 , as long as they can provide a restoring force for the lens support body 20 after the SMA wire 40 is powered off.

[0047] In a specific embodiment of the present application, the housing assembly 10 may include a shell 14 and a base 15, and the shell 14 is covered on the base 15 and encloses an accommodating space, and the lens support 20 is movably arranged in the accommodating space, and the lens support 20 is used to install the lens and drive the lens to move together, and the shell 14 has an opening for avoiding the lens. In addition, since the housing assembly 10 includes the shell 14 and the base 15 in this embodiment, when the elastic member 30 abuts against the top surface of the housing assembly 10, the elastic member 30 actually abuts against the inner top surface of the shell 14, and when the elastic member 30 abuts against the bottom surface of the housing assembly 10, the elastic member 30 actually abuts against the inner bottom surface of the base 15.

[0048] The elastic member 30 in the following embodiments generally selects a compression spring as the elastic member 30, and the elastic member 30 is arranged below the lens support body 20, that is, the elastic member 30 is connected to the bottom surface of the lens support body 20 and the inner bottom surface of the base 15 respectively. At the same time, the circumferential side wall of the housing assembly 10 in the following embodiments generally refers to the circumferential side wall of the base 15. Of course, in the present application, the housing 14 may also have a circumferential side wall, and the circumferential side wall of the housing 14 generally plays a role in protecting the internal structure of the lens drive motor.

[0049] In order to ensure the stability between the elastic member 30 and the housing assembly 10 and the lens support 20, the two ends of the elastic member 30 can be fixedly connected to the housing assembly 10 and the lens support 20 respectively. In an optional embodiment of the present application, the lens drive motor also includes a plurality of mounting gaskets 80, and the lens support 20 and the housing assembly 10 are respectively provided with mounting gaskets 80 at the two ends of the elastic member 30, and the two ends of the elastic member 30 are respectively connected to the corresponding mounting gaskets 80. By providing the mounting gaskets 80, the mounting gaskets 80 can be provided on the lens support 20 and the housing assembly 10 in an embedded manner, and the two ends of the elastic member 30 can be welded with different mounting gaskets 80 to achieve the fixed connection between the elastic member 30 and the lens support 20 and the housing assembly 10. And by such a setting, the lens support 20 can be protected when the lens drive motor is hit by an external force, and the abnormal sound caused by vibration can also be effectively improved.

[0050] Specifically, at least one circumferential side wall of the lens support body 20 has at least one overlapping protrusion 21, and at least a portion of each SMA wire 40 abuts against the overlapping protrusion 21. By providing the overlapping protrusion 21, the SMA wire 40 can be more easily overlapped on the lens support body 20 and can also prevent the SMA wire from interfering with other parts of the lens support body 20.

[0051] In a specific embodiment of the present application, the SMA wire 40 and the overlapping protrusion 21 are both one, which can effectively simplify the internal structure of the lens drive motor, thereby ensuring that the assembly of the lens drive motor is simpler and that the lens drive motor can be controlled more easily. Preferably, the distances from the overlapping protrusion 21 to the two ends of the lens support body 20 where it is located are the same. Through such an arrangement, when the SMA wire 40 is energized and contracted, the force on the lens support body 20 can be ensured to be more stable, thereby ensuring that the lens support body 20 will not be deflected during the process of being driven by the SMA wire 40, thereby ensuring the imaging effect of the camera device.

[0052] Optionally, the circumferential side wall of the lens support body 20 has a lap boss 22 extending toward the circumferential side wall of the housing assembly 10, and the lap protrusion 21 is arranged on the lap boss 22. This arrangement can ensure that other parts of the lens support body 20 will not contact the SMA wire 40, thereby effectively ensuring the stability of the SMA wire 40 driving the lens support body 20.

[0053] Optionally, the overlapping protrusion 21 is cylindrical. By such an arrangement, the SMA wire 40 can be wound on the circumferential side wall of the cylindrical overlapping protrusion 21. At the same time, such an arrangement can also ensure that the SMA wire 40 is in full contact with the overlapping protrusion 21. Moreover, in the actual assembly process, the SMA wire 40 does not need to be wound around the overlapping protrusion 21 for one or more turns, as long as it can be wound with an arc less than half a turn. Of course, the winding length of the SMA wire 40 can also be adaptively increased according to the actual use situation.

[0054] Preferably, the circumferential side wall of the overlapping protrusion 21 has a positioning groove for accommodating the SMA wire 40. This arrangement can effectively ensure the stability of the contact between the overlapping protrusion 21 and the SMA wire 40, prevent the SMA wire 40 from separating from the overlapping protrusion 21, and ensure the sensitivity of the SMA wire 40 to the drive of the lens support body 20, thereby effectively ensuring the performance of the lens drive motor.

[0055] Optionally, the circumferential side wall of the housing assembly 10 is provided with an escape notch 11 corresponding to the overlap protrusion 21, and the two ends of the SMA wire 40 are respectively arranged at the two ends of the escape notch 11. When the SMA wire 40 drives the lens support 20 to move along the optical axis, the escape notch 11 can effectively provide an escape space for the overlap protrusion 21, thereby reducing the friction between the lens support 20 and the housing assembly 10 during the movement, making the movement of the lens support 20 smoother. In addition, such a setting can also make the internal structure of the lens drive motor more compact, which is conducive to the miniaturization design of the lens drive motor.

[0056] Optionally, the lens drive motor further includes at least two claws 50, and the ends of each SMA wire 40 are respectively arranged on the circumferential side wall of the housing assembly 10 through the claws 50, and the housing assembly 10 is electrically connected to the claws 50. That is, in the present application, the SMA wire 40 is electrically connected to the housing assembly 10 through the claws 50. In a specific embodiment of the present application, a conductive pin is embedded inside the base 15 of the housing assembly 10, and the claws 50 are welded to the conductive pin to achieve electrical connection.

[0057] Preferably, the lens drive motor further comprises at least two baffles 51, each claw 50 is provided corresponding to at least one baffle 51, and at least a portion of the baffle 51 covers the outer surface of the claw 50. When the baffle 51 is not in contact with the outer surface of the claw 50, a gap for glue dispensing and protection can be reserved for the outer surface of the claw 50. By dispensing glue in the gap, the bonding force between the claw 50 and the housing assembly 10 can be improved. Since the SMA wire 40 will overcome the force of the elastic member 30 in the process of driving the lens support body 20 to move, the baffle 51 can effectively protect the claw 50 to prevent the claw 50 from loosening and disengaging from the circumferential side wall of the housing assembly 10, thereby effectively ensuring the structural reliability and performance of the lens drive motor.

[0058] Further preferably, the circumferential side wall of the housing assembly 10 is provided with at least two positioning posts 12 corresponding to the claws 50, each claw 50 is respectively matched with at least one positioning post 12, and the claws 50 and the baffle 51 are both provided with positioning holes corresponding to the positioning posts 12. This arrangement can ensure that the installation positions of the claws 50 and the baffle 51 are more accurate through the mutual cooperation of the positioning posts 12 and the positioning holes, thereby ensuring the assembly accuracy and performance of the lens drive motor.

[0059] In a specific embodiment of the present application, the lens driving motor further includes a plurality of balls 60, and the circumferential side walls of the lens support body 20 and the circumferential side walls of the housing assembly 10 have rolling grooves 61 arranged relatively to the balls 60, and the rolling grooves 61 extend along the optical axis direction of the lens support body 20, and the balls 60 are movably arranged in a space enclosed by the rolling grooves 61 on the lens support body 20 and the rolling grooves 61 on the housing assembly 10. By providing the balls 60, the friction between the lens support body 20 and the housing assembly 10 can be effectively reduced, thereby ensuring that the movement of the lens support body 20 is smoother. By providing the rolling grooves 61, a certain limiting and guiding effect can be played on the movement of the lens support body 20 and the balls 60, thereby ensuring that the lens support body 20 can move in a preset direction.

[0060] Optionally, the rolling groove 61 and the SMA wire 40 on the shell assembly 10 are respectively arranged on a group of relatively arranged circumferential side walls of the shell assembly 10. In addition, the lens drive motor also includes a magnetic suction component 70, at least a part of the magnetic suction component 70 is arranged on the shell assembly 10, and at least another part of the magnetic suction component 70 is correspondingly arranged on the lens support 20. In addition, the magnetic suction component 70 and the rolling groove 61 are both located on the same side wall of the lens support 20 or the shell assembly 10, and two rolling grooves 61 are arranged on the lens support 20 and the shell assembly 10, and the two rolling grooves 61 are symmetrically arranged about the magnetic suction component 70. Through such an arrangement, it can be ensured that the lens support 20 can abut against the side of the shell assembly 10 where the magnetic suction component 70 is arranged, so as to ensure that the ball 60 can abut against the lens support 20 and the shell assembly 10 respectively, and then the role of the ball 60 can be fully exerted. In other words, through such an arrangement, it is possible to prevent the ball 60 from being separated from the rolling groove 61 of the lens support 20 or the shell assembly 10.

[0061] Optionally, one of the two rolling grooves 61 on the housing assembly 10 and the lens support 20 is a V-shaped groove 611, and the other is a U-shaped groove 612. In a specific embodiment of the present application, the U-shaped groove 612 of the housing assembly 10 corresponds to the U-shaped groove 612 on the lens support, and the V-shaped groove 611 of the housing assembly 10 corresponds to the V-shaped groove 611 on the lens support. By providing the V-shaped groove 611, the limiting and guiding effect of the ball 60 and the rolling groove 61 on the movement of the lens support 20 can be further improved, and by providing the U-shaped groove 612, the stuck situation between the lens support 20, the ball 60 and the housing assembly 10 can be effectively avoided.

[0062] Preferably, the plurality of balls 60 in the same rolling groove 61 are arranged along the optical axis direction of the lens support 20. Moreover, at least one ball 60 may be disposed in the same rolling groove 61.

[0063] Specifically, there are a plurality of elastic members 30, and the plurality of elastic members 30 are spaced around the periphery of the top surface or the bottom surface of the lens support body 20. In a specific embodiment of the present application, there are four elastic members 30, and an elastic member 30 is respectively provided at the four corners of the lens support body 20. This arrangement can not only ensure the stability of the elastic member 30 supporting the lens support body 20, but also when the lens drive motor is subjected to a large impact force and causes the part of the magnetic suction component 70 located on the lens support body 20 and the part of the magnetic suction component 70 located on the shell component 10 to separate, the elastic member 30 can also correct the deviation of the lens support body 20, or in other words, the lens support body 20 will tilt at this time, and the elastic member 30 can provide a return force for the lens support body 20.

[0064] Preferably, the housing assembly 10 and / or the lens support 20 are provided with a mounting groove 13 corresponding to the elastic member 30. Such a configuration can effectively ensure the stability between the elastic member 30 and the housing assembly 10 and the lens support 20. Moreover, in this embodiment, the mounting groove 13 is provided on the base 15 in the housing assembly 10. Further preferably, the mounting gasket 80 is embedded in the bottom of the mounting groove 13.

[0065] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0066] 1. Effectively solve the problem of poor performance of lens drive motor in the prior art;

[0067] 2. Simple structure and stable performance.

[0068] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0071] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lens drive motor, characterized in that: include: Housing assembly (10); a lens support body (20), at least a portion of which is movably disposed inside the housing assembly (10); at least one elastic member (30), two ends of the elastic member (30) respectively abutting against the lens support body (20) and the housing assembly (10); at least one SMA wire (40), two ends of the SMA wire (40) being respectively connected to the housing assembly (10), and at least a portion of the SMA wire (40) being in contact with the lens support body (20); When the SMA wire (40) is energized, the SMA wire (40) drives the lens support body (20) to move along the optical axis direction, and the elastic member (30) is compressed or stretched.

2. The lens driving motor according to claim 1, characterized in that: At least one circumferential side wall of the lens support body (20) has at least one overlapping protrusion (21), and at least a portion of each of the SMA wires (40) abuts against the overlapping protrusion (21).

3. The lens driving motor according to claim 2, characterized in that: The SMA wire (40) and the overlapping protrusion (21) are both one, and the distances from the overlapping protrusion (21) to the two ends of the lens support body (20) where the overlapping protrusion (21) is located are the same.

4. The lens driving motor according to claim 2, characterized in that: The circumferential side wall of the lens support body (20) has a lap boss (22) extending toward the circumferential side wall of the housing assembly (10), and the lap protrusion (21) is arranged on the lap boss (22).

5. The lens driving motor according to claim 2, characterized in that: The overlapping protrusion (21) is cylindrical; and / or The circumferential side wall of the overlapping protrusion (21) has a positioning groove for accommodating the SMA wire (40).

6. The lens driving motor according to claim 2, characterized in that: The circumferential side wall of the housing assembly (10) is provided with an avoidance notch (11) corresponding to the overlapping protrusion (21), and two ends of the SMA wire (40) are respectively arranged at two ends of the avoidance notch (11).

7. The lens driving motor according to claim 6, characterized in that: The lens driving motor further comprises at least two claws (50), and the end of each SMA wire (40) is respectively arranged on the circumferential side wall of the housing assembly (10) through the claws (50), and the housing assembly (10) is electrically connected to the claws (50).

8. The lens driving motor according to claim 7, characterized in that: The lens driving motor further comprises at least two baffles (51), each of the clamping claws (50) is arranged corresponding to at least one of the baffles (51), and at least a portion of the baffles (51) covers the outer surface of the clamping claw (50).

9. The lens driving motor according to claim 8, characterized in that: The circumferential side wall of the housing assembly (10) is provided with at least two positioning columns (12) corresponding to the clamping claw (50), each of the clamping claws (50) is respectively matched with at least one of the positioning columns (12), and the clamping claws (50) and the baffle (51) are both provided with positioning holes corresponding to the positioning columns (12).

10. The lens driving motor according to claim 3, characterized in that: The lens driving motor also includes a plurality of balls (60), and the circumferential side walls of the lens support body (20) and the circumferential side walls of the shell assembly (10) have rolling grooves (61) arranged relatively to the balls (60), and the rolling grooves (61) extend along the optical axis direction of the lens support body (20), and the balls (60) are movably arranged in a space enclosed by the rolling grooves (61) on the lens support body (20) and the rolling grooves (61) on the shell assembly (10).

11. The lens driving motor according to claim 10, characterized in that: The rolling groove (61) and the SMA wire (40) on the housing component (10) are respectively arranged on a group of oppositely arranged circumferential side walls of the housing component (10).

12. The lens driving motor according to claim 10, characterized in that: The lens driving motor further comprises a magnetic attraction component (70), at least a portion of the magnetic attraction component (70) is arranged on the housing component (10), and at least another portion of the magnetic attraction component (70) is correspondingly arranged on the lens support body (20).

13. The lens driving motor according to claim 12, characterized in that: The magnetic attraction component (70) and the rolling groove (61) are both located on the same side wall of the lens support body (20) or the shell component (10); two rolling grooves (61) are provided on each of the lens support body (20) and the shell component (10), and the two rolling grooves (61) are symmetrically arranged with respect to the magnetic attraction component (70).

14. The lens driving motor according to claim 13, wherein: One of the two rolling grooves (61) on the housing component (10) and / or the lens support body (20) is a V-shaped groove (611), and the other is a U-shaped groove (612).

15. The lens driving motor according to any one of claims 1 to 14, characterized in that: The elastic member (30) is a compression spring. The two ends of the compression spring are respectively in contact with the bottom surface of the lens support body (20) and the bottom surface of the housing assembly (10), and when the SMA wire (40) is energized, the SMA wire (40) drives the lens support body (20) to move in a direction close to the bottom surface of the housing assembly (10), and the compression spring is compressed; or The two ends of the compression spring are respectively in contact with the top surface of the lens support body (20) and the top surface of the shell assembly (10); when the SMA wire (40) is energized, the SMA wire (40) drives the lens support body (20) to move in a direction close to the top surface of the shell assembly (10), and the compression spring is compressed.

16. The lens driving motor according to any one of claims 1 to 14, characterized in that: The elastic member (30) is a tension spring. The two ends of the tension spring are respectively in contact with the bottom surface of the lens support body (20) and the bottom surface of the housing assembly (10), and when the SMA wire (40) is energized, the SMA wire (40) drives the lens support body (20) to move in a direction close to the top surface of the housing assembly (10), and the tension spring is stretched; or The two ends of the tension spring are respectively in contact with the top surface of the lens support body (20) and the top surface of the shell assembly (10); after the SMA wire (40) is energized, the SMA wire (40) drives the lens support body (20) to move in a direction close to the bottom surface of the shell assembly (10), and the tension spring is stretched.

17. The lens driving motor according to any one of claims 1 to 14, characterized in that: There are a plurality of elastic members (30), and the plurality of elastic members (30) are arranged at intervals around the periphery of the top surface or the bottom surface of the lens support body (20); and / or The lens drive motor further comprises a plurality of mounting gaskets (80), the lens support body (20) and the housing assembly (10) are respectively provided with mounting gaskets (80) at two ends corresponding to the elastic member (30), and the two ends of the elastic member (30) are respectively connected to the corresponding mounting gaskets (80); and / or The housing assembly (10) and / or the lens support body (20) is provided with a mounting groove (13) corresponding to the elastic member (30).

18. A camera device, characterized in that: A lens driving motor comprising the lens driving motor as claimed in any one of claims 1 to 17.

19. An electronic device, characterized in that: Includes the camera device according to claim 18.

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