Triangular lens driving motor and camera device and electronic equipment equipped with the same

Abstract

The present invention provides a triangular lens drive motor and a camera device and electronic device equipped with the same. The triangular lens drive motor comprises a base, a lower spring sheet, a coil carrier, three magnets, an upper spring sheet and an upper cover; the cross-sections of the top view of the base, the coil carrier and the upper cover are all triangular, and the connection between any two sides is transitioned by an arc; the upper spring sheet is arranged on the coil carrier, the coil carrier is arranged between the upper spring sheet and the lower spring sheet and installed on the base, the three magnets are arranged at three corners of the circumference of the coil carrier, the upper cover covers the upper spring sheet, the coil carrier, the three magnets and the lower spring sheet from top to bottom and is connected to the base; the lower spring sheet is composed of three independent spring sheet units, each of which is composed of an arc spring wire with an inner diameter and a spring sheet arranged at the outer diameter of the arc spring wire, and the arc spring wire and the spring sheet are connected. The triangular lens drive motor can reduce the occupied space of the motor assembly, which is conducive to the development of ultra-thin and lightweight mobile phones.

Description

Technical Field

[0001] The invention relates to a motor of a lens module, and in particular to a triangular lens driving motor and a photographing device and an electronic device equipped with the motor. Background Art

[0002] At present, mobile phone cameras with anti-shake function can effectively offset the image deviation caused by hand shaking, so they can take clear photos even in shaking or dark environments, and are very popular among users. The current electromagnetic anti-shake device has a magnet and a displacement coil, and uses the magnet and displacement coil to move the lens component in a direction perpendicular to the optical axis to compensate for the shake.

[0003] Publication number CN 108153081A discloses an optical image stabilization voice coil motor, which adopts a currently more common design, that is, the overall shape of the motor is square or rectangular. Since the lens size is relatively fixed and the motor assembly is installed on the periphery of the lens, the four corners of the motor assembly in the prior art take up more space and volume, and the internal layout of the mobile phone is precise and space is precious, which is not conducive to the development of ultra-thin and lightweight mobile phones.

[0004] In addition, in order to use the current rectangular motor, four magnets and four spring wires need to be placed in four positions inside. Due to the large number of magnets, magnetic interference is likely to occur between them, affecting the image quality and the electrical stability of the electronic components inside the mobile phone. Summary of the invention

[0005] The present invention provides a triangular lens driving motor and a photographing device and an electronic device equipped with the same. The triangular lens driving motor comprises a base, a lower spring sheet, a coil carrier, three magnets, an upper spring sheet and an upper cover;

[0006] The cross-sections of the base, the coil carrier and the upper cover in top view are all triangular, and the connection between any two sides is transitioned by an arc;

[0007] The upper spring sheet is arranged on the coil carrier, the coil carrier is arranged between the upper spring sheet and the lower spring sheet and installed on the base, the three magnets are arranged at three corners of the circumference of the coil carrier, the upper cover covers the upper spring sheet, the coil carrier, the three magnets and the lower spring sheet from top to bottom and is connected to the base, wherein the upper cover, the upper spring sheet, the coil carrier, the lower spring sheet and the base are all provided with a central hole in the middle;

[0008] The lower spring sheet is composed of three independent spring sheet units, each of which is composed of an arc spring wire with an inner diameter and a spring sheet arranged at the outer diameter of the arc spring wire. The arc spring wire is connected to the spring sheet, the arc spring wire is clamped between the coil carrier and the base, and the spring sheet is clamped between the magnet and the base.

[0009] Furthermore, the coil carrier is composed of a carrier and a coil mounted on the carrier, and the coil is sleeved on the outer ring of the carrier and fixed by a slot provided on the outer diameter of the carrier;

[0010] The lower surface of the carrier is provided with two winding parts extending downwards, the winding parts are located in shallow grooves opened on the upper surface of the base, and the two ends of the coil are respectively wound around the two winding parts and led out.

[0011] Furthermore, the coil is triangular, and any two sides are connected by a circular arc transition.

[0012] Furthermore, the upper and lower surfaces of the carrier are respectively provided with positioning mechanisms for fixing the upper spring sheet and the lower spring sheet, and the upper spring sheet and the lower spring sheet are provided with limiting holes corresponding to the positioning mechanisms.

[0013] Furthermore, the cross-section of the top view of each of the magnets is approximately an isosceles trapezoid, the first magnetic pole surface of the inner diameter and the second magnetic pole surface of the outer diameter are both arc surfaces protruding outward, the first magnetic pole surface and the arc outer diameter of the coil are arranged parallel to each other and spaced apart, and the polarity of the first magnetic pole surface and the second magnetic pole surface are opposite.

[0014] Furthermore, the circular arc spring wire and the spring leaf are connected together by a continuously bent wavy spring wire (, a connecting piece is provided on the outer diameter of one end of the circular arc spring wire, one end of the wavy spring wire is connected to the connecting piece, and the other end is connected to the spring leaf.

[0015] Furthermore, the three straight sides of the cross-section of the top view of the base, the coil carrier and the upper cover are of equal length, and the arc radii of the connecting parts of the two sides are also the same.

[0016] The present invention also provides a photographic device, which is equipped with the above-mentioned triangular lens driving motor.

[0017] The present invention also provides an electronic device comprising the above-mentioned triangular lens driving motor.

[0018] The advantages of the present invention are:

[0019] (1) The use of a triangular-shaped motor can reduce the space occupied by the motor assembly, free up additional space for installing other components, and make the internal space of the mobile phone more compact and reasonable, providing possibilities for the further development of mobile phones. At the same time, the triangular-structured motor is also conducive to the development of ultra-thin and lightweight mobile phones.

[0020] (2) The present invention uses three magnets distributed at the corners and three spring units that are independent of each other and cooperate with the magnets, which can effectively improve the magnetic interference problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 An appearance diagram of a triangular lens driving motor provided by the present invention;

[0023] Figure 2 This is an exploded view of the triangular lens drive motor;

[0024] Figure 3 This is an internal diagram of the triangular lens drive motor;

[0025] Figure 4 This is an exploded view of the internal structure of the triangular lens drive motor;

[0026] Figure 5 is a three-dimensional diagram of a coil carrier;

[0027] Figure 6 This is a single body picture after the coil and the carrier are separated;

[0028] Figure 7 is a schematic diagram of the lower shrapnel;

[0029] Figure 8 This is a schematic diagram of the configuration of the lower spring piece and three magnets from a top-down perspective;

[0030] Fig. 9 This is a schematic diagram of the configuration of the lower spring piece and three magnets from an upward angle;

[0031] Fig.10 This is the distribution diagram between the three magnets and the coil. DETAILED DESCRIPTION

[0032] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0033] In order to fully understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0034] The present invention provides a triangular lens driving motor, such as Figure 1-2 As shown, the triangular lens driving motor includes a base 700, a lower spring piece 600, a coil carrier 800, three magnets 500, an upper spring piece 200 and an upper cover 100;

[0035] The cross-sections of the base 700, the coil carrier 800 and the upper cover 100 in top view are all triangular, and the connection between any two sides is transitioned by an arc;

[0036] The upper spring sheet 200 is arranged on the coil carrier 800, the coil carrier 800 is arranged between the upper spring sheet 200 and the lower spring sheet 600 and installed on the base 700, the three magnets 500 are arranged at the three corners of the circumference of the coil carrier 800, the upper cover 100 covers the upper spring sheet 200, the coil carrier 800, the three magnets 500 and the lower spring sheet 600 from top to bottom and is connected to the base 700, wherein the upper cover 100, the upper spring sheet 200, the coil carrier 800, the lower spring sheet 600 and the base 700 are all provided with a central hole in the middle;

[0037] The lower spring sheet 600 is composed of three independent spring sheet units 610. Each spring sheet unit 610 is composed of an arc spring wire 611 with an inner diameter and a spring sheet 612 arranged at the outer diameter of the arc spring wire 611. The arc spring wire 611 and the spring sheet 612 are connected. The arc spring wire 611 is clamped between the coil carrier 800 and the base 700, and the spring sheet 612 is clamped between the magnet 500 and the base 700.

[0038] Different from the traditional square motor, the present invention adopts a triangular structure. In order to adapt to the triangular motor assembly, the base 700, the coil carrier 800, and the upper and lower springs are all triangular in shape. The magnets are distributed at the three corners. When working, the energized coil is subjected to force in the magnetic field, and the carrier drives the lens to move. The present invention makes full use of the structural space, can reduce the space occupied by the motor assembly, can free up extra space for installing other components, can make the internal space of the mobile phone more compact and reasonable, and provide possibilities for the further development of mobile phones; at the same time, the triangular motor is also conducive to the development of ultra-thin and lightweight mobile phones.

[0039] In addition, the present invention only uses three magnets distributed at the corners and three independent spring units 610 that cooperate with the magnets, which can effectively improve the magnetic interference problem.

[0040] In an optional embodiment, if Figure 5-6 As shown, the coil carrier 800 is composed of a carrier 400 and a coil 300 mounted on the carrier 400. The coil 300 is sleeved on the outer ring of the carrier 400 and fixed by a clamping groove 401 provided on the outer diameter of the carrier 400. Two winding feet 402 extending downward are provided on the lower surface of the carrier. The winding feet 402 are located in a shallow groove 701 provided on the upper surface of the base 700. The two lead ends of the coil 300 are respectively wound around the two winding feet 402 and led out. In another embodiment, we can also set a corresponding clamping fixing structure on the carrier 400 to avoid the installation deviation of the coil 300.

[0041] Further reading Figure 6 and Fig.10 The coil 30 is approximately a triangular ring winding, with three straight sides, and any two straight sides are connected by a large arc 301, so that the outer contour of the coil 30 matches the triangular shape of the motor.

[0042] In an optional embodiment, if Figure 6 The upper and lower surfaces of the carrier 400 are respectively provided with positioning mechanisms 403 for fixing the upper spring sheet 200 and the lower spring sheet 600, and the upper spring sheet 200 and the lower spring sheet 600 are provided with limiting holes corresponding to the positioning mechanisms 403. The positioning mechanisms 403 can well fix the upper and lower spring sheets on their upper and lower surfaces to prevent slippage.

[0043] In an optional embodiment, if Fig.10It can be seen that the cross-section of each magnet 500 in the top view is approximately an isosceles trapezoid, the first magnetic pole surface 501 of the inner diameter and the second magnetic pole surface 502 of the outer diameter are both arc surfaces protruding outward, the first magnetic pole surface 501 and the arc 301 outer diameter surface of the coil 300 are arranged parallel to each other and spaced apart, and the polarity of the first magnetic pole surface 501 and the second magnetic pole surface 502 are opposite. In another optional embodiment, the magnet 500 can also be selected from other shapes, but in order to reduce the horizontal occupied volume of the motor, the inner diameter surface and the outer diameter surface are preferably arc-shaped so as to be arranged parallel to the coil 300.

[0044] In an optional embodiment, the circular arc spring wire 611 and the spring leaf 612 are connected together by a continuously bent wavy spring wire 613, and a connecting piece is provided on the outer diameter of one end of the circular arc spring wire 611. One end of the wavy spring wire 613 is connected to the connecting piece, and the other end is connected to the spring leaf 612. The wavy spring wire 613 is used to connect the circular arc spring wire 611 and the spring leaf 612, so that the stability of the wavy spring wire 613 can be ensured. When the circular arc spring wire 611 and the spring leaf 612 are not subjected to force, each spring leaf unit 610 can also ensure good stability under the action of the wavy spring wire 613, and excessive bending that causes deformation of the spring leaf unit 610 can be avoided.

[0045] Of course, in other embodiments, we can also use straight or arc spring wire to connect the circular arc spring wire 611 and the spring leaf 612. This is because the lower spring leaf is clamped between the upper coil carrier 800, the magnet 500 and the lower base 700. After installation, the upper and lower surfaces are supported. Even if the spring leaf unit 610 is slightly bent before installation, it will help it to recover after installation by being clamped between the coil carrier 800 and the base 700.

[0046] Among them Figure 4 The upper spring piece 200 is an integrally formed whole, and end portions extending toward the outer diameter are arranged at three corners for contacting with the upper surface of the magnet 500 .

[0047] In an optional embodiment, the three straight sides of the top view cross section of the base 700, coil carrier 800 and upper cover 100 are of equal length, and the arc radius of the connecting parts of the two sides is also the same, that is, the motor of the present invention is approximately an equilateral triangle.

[0048] When current flows through the focusing coil 300, the carrier 400 and the lens fixed on the bracket will move along the optical axis. The lens will move to a position where the restoring force of the upper spring sheet 200 and the lower spring sheet 600 and the thrust (electromagnetic force) are balanced to achieve focusing and other actions.

[0049] At the same time, the present invention also provides a photographic device using the above-mentioned triangular lens drive motor, and an electronic device using the above-mentioned triangular lens drive motor. The difference from the prior art is that the use of the uniquely designed triangular lens drive motor of the present invention can further save the internal space of the photographic device and the electronic device.

[0050] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A triangular lens drive motor, characterized in that: The triangular lens driving motor comprises a base (700), a lower spring sheet (600), a coil carrier (800), three magnets (500), an upper spring sheet (200) and an upper cover (100); The cross-sections of the base (700), the coil carrier (800) and the upper cover (100) in top view are all triangular, and the connection between any two sides is transitioned by an arc; The upper spring sheet (200) is arranged on the upper surface of the coil carrier (800); the coil carrier (800) is arranged between the upper spring sheet (200) and the lower spring sheet (600) and is installed on the base (700); the three magnets (500) are arranged at three corners of the circumference of the coil carrier (800); the upper cover (100) covers the upper spring sheet (200), the coil carrier (800), the three magnets (500) and the lower spring sheet (600) from top to bottom and is connected to the base (700); wherein the upper cover (100), the upper spring sheet (200), the coil carrier (800), the lower spring sheet (600) and the base (700) are all provided with a central hole in the middle; The lower spring sheet (600) is composed of three mutually independent spring sheet units (610), each of the spring sheet units (610) is composed of an arc spring wire (611) with an inner diameter and a spring sheet (612) arranged at the outer diameter of the arc spring wire (611), the arc spring wire (611) and the spring sheet (612) are connected, the arc spring wire (611) is clamped between the coil carrier (800) and the base (700), and the spring sheet (612) is clamped between the magnet (500) and the base (700).

2. The triangular lens drive motor according to claim 1, characterized in that: The coil carrier (800) is composed of a carrier (400) and a coil (300) mounted on the carrier (400); the coil (300) is sleeved on the outer ring of the carrier (400) and fixed by a clamping groove provided on the outer diameter of the carrier (400); The lower surface of the carrier (400) is provided with two winding parts (402) extending downwards, and the winding parts are located in a shallow groove (701) opened on the upper surface of the base (700). The two ends of the coil (300) are respectively wound around the two winding parts (402) and led out.

3. The triangular lens drive motor according to claim 2, characterized in that: The coil (300) is triangular, and any two sides are connected at a transition point through an arc (301).

4. The triangular lens drive motor according to claim 2, wherein: The upper and lower surfaces of the carrier are respectively provided with positioning mechanisms (403) for fixing the upper spring sheet (200) and the lower spring sheet (600), and the upper spring sheet (200) and the lower spring sheet (600) are provided with limiting holes corresponding to the positioning mechanisms.

5. The triangular lens driving motor according to claim 3, characterized in that: The cross-section of the top view of each magnet (500) is approximately an isosceles trapezoid, the first magnetic pole surface (501) of the inner diameter and the second magnetic pole surface (502) of the outer diameter are both arc surfaces protruding outward, the first magnetic pole surface (501) and the outer diameter of the circular arc (301) of the coil (300) are arranged parallel to each other and spaced apart, and the polarities of the first magnetic pole surface (501) and the second magnetic pole surface (502) are opposite.

6. The triangular lens driving motor according to claim 1, wherein: The circular arc spring wire (611) and the spring leaf (612) are connected together via a continuously bent wavy spring wire (613); a connecting piece is provided on the outer diameter of one end of the circular arc spring wire (611); one end of the wavy spring wire (613) is connected to the connecting piece, and the other end is connected to the spring leaf (612).

7. The triangular lens driving motor according to claim 1, characterized in that: The three straight sides of the cross-section of the top view of the base (700), the coil carrier (800) and the upper cover (100) are of equal length, and the arc radius of the connection between the two sides is also the same.

8. A photographing device comprising the triangular lens driving motor according to any one of claims 1 to 7.

9. An electronic device comprising the triangular lens driving motor according to any one of claims 1 to 7.

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