Anti-shake motor capable of reducing abnormal sound

Abstract

The utility model relates to an anti-shake motor capable of reducing abnormal sound, comprising a housing in which a hollow cavity is formed; an OIS driving coil is arranged in the shell; the movable assembly is movably arranged in the hollow cavity; the movable assembly comprises a frame and a lens carrier sleeved in the frame. The frame is arranged in the hollow cavity and can move in the direction perpendicular to the optical axis. A plurality of driving magnets are arranged on the frame; the lens carrier is arranged in the hollow cavity and can move along the optical axis direction; an AF driving coil is arranged on the outer side of the lens carrier; a buffer piece is arranged between the shell and the movable assembly. According to the utility model, the buffer member is arranged between the housing and the movable assembly, so that the frame and / or the lens carrier can be prevented from moving and colliding with the housing to generate abnormal sound when the motor is not electrified through the buffer member, thereby prolonging the service life of the motor.

Description

Technical Field

[0001] The utility model relates to the field of optical imaging, in particular to an anti-hand-shake motor capable of reducing abnormal noise. Background Art

[0002] With the rapid development of technology, electronic devices in modern society have entered a new stage. It is not difficult to find that many electronic products used in daily life, such as smart phones or digital cameras, have powerful photo and video functions. These functions are no longer limited to professional photography equipment, but are becoming more and more popular and an indispensable part of our lives. In order to meet the needs of consumers, these electronic devices are increasingly focusing on convenience and thinness in design, striving to provide rich functions while maintaining a lightweight appearance and convenience of carrying.

[0003] In these electronic devices with camera or video functions, the lens drive device undoubtedly plays a vital role. It is responsible for driving the optical components in the lens to move precisely, thereby achieving the functions of autofocus and optical image stabilization. When the shutter or video button is pressed, the light passes through the optical components of the lens and finally focuses on the photosensitive components to form a clear and stable image.

[0004] The aforementioned electronic devices with camera or video recording functions are usually equipped with a driving mechanism to drive the optical element (such as a lens) to move along the optical axis, thereby achieving the function of auto focus (AF) or optical image stablization (OIS). At present, the motor covers on the market are basically made by drawing a flat piece of metal. The four sides of the inner wall directly collide with the moving parts (frame), and there are no buffer components, which will generate noise during the collision. When the motor is not powered on, the vibration of the mobile phone will cause the motor to shake violently. The internal moving parts and the outer cover will collide violently on the four sides, making abnormal noises, which will affect the user experience and reduce the service life of the motor. Utility Model Content

[0005] In order to solve the above problems in the prior art, the utility model provides an anti-shake motor with reduced abnormal noise.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] An anti-shake motor for reducing abnormal noise, characterized by: comprising

[0008] A shell having a hollow cavity formed therein; an OIS drive coil is arranged in the shell;

[0009] A movable component is movably arranged in the hollow cavity; the movable component comprises a frame and a lens carrier sleeved in the frame; the frame is arranged in the hollow cavity and can move perpendicular to the optical axis; a plurality of driving magnets are arranged on the frame; the lens carrier is arranged in the hollow cavity and can move along the optical axis; an AF driving coil is arranged outside the lens carrier;

[0010] A buffer is provided between the shell and the movable component.

[0011] Furthermore, the shell includes an outer shell and a base; the bottom opening of the outer shell is fixedly connected to the base to form a hollow cavity inside.

[0012] Furthermore, an upper spring sheet is provided between the top of the lens carrier and the inner top wall of the shell; the outer side of the upper spring sheet is connected to the frame, and the inner side is connected to the lens carrier; the upper spring sheet is electrically connected to a circuit board arranged in the shell through a connecting piece; and the circuit board is arranged on the base.

[0013] Furthermore, the upper spring sheet comprises several independent upper spring support sheets; the inner side of each upper spring support sheet is connected to the lens carrier, and the outer side is connected to the frame; the end of each upper spring support sheet is connected to the circuit board through a connector.

[0014] Furthermore, the OIS driving coil is arranged on the upper end surface of the base.

[0015] Furthermore, a lower spring sheet is provided between the lens carrier and the base; the lower spring sheet is respectively connected to the frame and the lens carrier.

[0016] Furthermore, the housing includes a top surface and side walls formed by edges of the top surface extending along the optical axis direction; and the buffer is arranged on the top surface and / or the side walls.

[0017] Furthermore, the buffer component is arranged on the inner side of the shell; the buffer component is a soft plastic film or an injection molded part.

[0018] Furthermore, the shell is provided with a plurality of injection holes; the injection holes include a groove and a through hole formed in the middle of the groove; the buffer is arranged in the injection holes and forms a buffer part on the inner side surface of the shell.

[0019] Furthermore, the shell is provided with a plurality of injection molding parts; the injection molding parts include a plurality of fine holes; the aperture of the fine holes gradually decreases from the outer side of the shell to the inner side of the shell; the buffer is arranged in the injection molding parts and forms a buffer part on the inner side of the shell.

[0020] The beneficial effect of the utility model is that a buffer is provided between the shell and the movable component, and the buffer can prevent the frame and / or lens carrier from moving and colliding with the shell and making abnormal noise when the motor is not powered on, thereby increasing the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is an exploded view of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the initial state of the shell of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model after the shell is folded and welded;

[0025] Figure 4 This is an exploded view of the structure of the housing of the utility model;

[0026] Figure 5 It is an enlarged view of the A part of the utility model;

[0027] Figure 6 It is a schematic diagram of a partial interface of the utility model;

[0028] Figure 7 It is an enlarged view of part B of the utility model;

[0029] Figure 8 This is a schematic diagram of the housing structure of an embodiment of the utility model;

[0030] Fig. 9 This is a schematic diagram of the injection molding structure of the housing of an embodiment of the utility model;

[0031] Fig.10 This is a schematic diagram of the structure of a buffer member according to an embodiment of the utility model;

[0032] Description of reference numerals:

[0033] 100, shell; 110, base; 111, circuit board; 120, housing; 1201, injection hole; 1202, groove; 1203, through hole; 1204, injection portion; 1205, pore; 121, top surface; 122, side wall; 123, light inlet; 200, frame; 210, driving magnet; 220, OIS driving coil; 300, lens carrier; 310, AF driving coil; 400, upper spring piece; 410, upper spring support piece; 420, connector; 430, lower spring piece; 500, buffer; 510, buffer portion; 520, limit portion; 530, connector. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figure 1 As shown, an anti-shake motor for reducing abnormal noise includes a housing 100, a lens carrier 300, and a frame 200; a buffer 500 is provided between the housing 100 and the movable component;

[0038] The housing 100 has a hollow cavity formed therein; the housing 100 is generally composed of a base 110 and a shell 120; the bottom opening of the shell 120 is connected to the base 110 by means of clamping, welding or bonding;

[0039] The hollow cavity is provided with a frame 200, and a lens carrier 300 is sleeved in the frame 200; the middle parts of the housing 120, the base 110, and the lens carrier 300 are provided with an axially connected lens through hole along the optical axis direction (Z axis) to accommodate the lens;

[0040] The frame 200 can move perpendicularly to the optical axis in the hollow cavity, specifically, it can move along the X-axis and the Y-axis; a plurality of driving magnets 210 are provided on the frame 200; in one embodiment, a magnet mounting groove is provided on the inner side of the bottom end of the frame 200, and the driving magnet 210 is fixed in the magnet mounting groove, and four magnet mounting grooves are respectively provided along the four sides of the frame 200;

[0041] The OIS driving coil 220 is disposed on the upper end surface of the base 110; the frame 200 is also located on the upper end of the base 110, and the frame 200 can move in the X-axis and Y-axis directions on the base 110; under the action of the OIS driving coil 220 and the corresponding driving magnet 210, the frame 200 together with the driving magnet 210 and the lens carrier 300 can move in the X-axis and Y-axis directions in the hollow cavity;

[0042] An AF driving coil 310 is provided on the outside of the lens carrier 300, and the lens carrier 300 is located inside the frame 200; the lens carrier 300 can move in the optical axis direction (Z axis direction) in the hollow cavity, and the optical axis direction is a direction parallel to the Z axis; the movement of the lens carrier 300 is to move in the Z axis direction relative to the frame 200 inside the frame 200; under the action of the AF driving coil 310 and the driving magnet 210, the lens carrier 300 will move in the Z axis direction relative to the frame 200; it should be noted that the lens (not shown in the figure) is installed in the lens carrier 300, so the above movement will drive the lens to move, thereby realizing the three-axis movement operation of the lens;

[0043] In one embodiment, an upper spring sheet 400 is disposed between the top of the lens carrier 300 and the inner top wall of the housing 100; the upper spring sheet 400 is respectively connected to the lens carrier 300 and the frame 200; the upper spring sheet 400 is electrically connected to the circuit board 111 disposed in the housing 100;

[0044] In one embodiment, the upper spring sheet 400 is connected to the circuit board 111 disposed in the housing 100; the circuit board 111 is disposed on the base 110; the upper spring sheet 400 is electrically connected to the circuit board 111 through a connecting member 420; the connecting member 420 is a suspension line, which is a flexible member and can withstand tension; a lower spring sheet 430 is disposed between the lens carrier 300 and the base 110, and the lower spring sheet 430 is respectively connected to the frame 200 and the lens carrier 300; the lower spring sheet 430 can play a role in assisting resetting after the lens carrier 300 moves relative to the frame 200 in the Z-axis direction;

[0045] In one embodiment, the upper elastic sheet 400 includes two independent upper elastic supporting sheets 410; the two upper elastic supporting sheets 410 are arranged around each other, and there is a certain distance between the two adjacent upper elastic supporting sheets 410; the inner side of each upper elastic supporting sheet 410 is connected to the lens carrier 300, and the outer side is connected to the frame 200; the end of each upper elastic supporting sheet 410 is electrically connected to the circuit board 111 on the base 110 through a connecting member 420, wherein the connecting member 420 can be connected to one end of the upper elastic supporting sheet 410 or to both ends respectively;

[0046] In one embodiment, the structure of the upper spring sheet 400 is connected to the lens carrier 300, the frame 200, and the base 110 at the same time. Under the elastic action of the upper spring sheet 400, when the frame 200 moves relative to the base 110 in the X-axis and Y-axis or when the lens carrier 300 moves relative to the frame 200 in the Z-axis, the upper spring sheet 400 can play a role in assisting the resetting, thereby making the structure of the lower spring sheet 430 an unnecessary optional structure; the upper spring sheet 400 is connected to the base 110 through a connecting member 420; the connecting member 420 is a rigid member and can play a supporting role, ensuring the relative distance between the connection between the upper spring sheet 400 and the base 110, so as to achieve the resetting of the frame 200 and the lens carrier 300;

[0047] In one embodiment, a sensor (not shown) is disposed in the housing 100 to sense the movement trajectory of the frame 200 in the X-axis and Y-axis directions and the movement trajectory of the lens carrier 300 in the Z-axis direction; the sensor is a Hall sensor.

[0048] In one embodiment, the housing 120 includes a top surface 121 and a side wall 122 formed by extending the edge of the top surface 121 along the optical axis direction (Z axis); the middle of the top surface 121 is a light inlet 123; after the lens is mounted on the lens carrier 300, light enters the lens from the light inlet 123; in this example, the top surface 121 is square in shape, and the side wall 122 is four side surfaces formed by extending the four edges of the square along the optical axis direction, and the four side surfaces constitute an integral side wall 122 structure, which ensures the strength of the housing 120 on the one hand, and improves the sealing performance on the other hand; the top surface 121 can also be formed in common geometric shapes such as circle, rectangle, hexagon, etc.

[0049] In one embodiment, the housing 120 may be formed by stamping a metal sheet and then folding it; Figure 2 The expansion diagram of the housing 120 is shown, which can be obtained by stamping to obtain an initial shape, and further formed by folding four outer edges and welding the joints between the outer edges. Figure 3 The housing 120 structure shown;

[0050] like Figure 2-3The buffer member 500 shown is arranged on the inner side of the side wall 122, and a total of four buffer members 500 are arranged; the buffer member 500 is a soft plastic sheet or an injection molded part; that is, the buffer member 500 can be fixed to the inner side of the side wall 122 by gluing, or can be molded on the side wall 122 by injection molding; the buffer member 500 shown can be arranged when the shell 120 is not folded, or can be arranged after the shell 120 is folded and welded;

[0051] When the motor is not powered, the vibration of the mobile phone will cause the motor to shake sharply, and the internal moving parts and the outer cover will collide violently on the four sides to produce abnormal noise; the buffer member 500 can prevent the frame 200 from moving and colliding with the outer cover 120 to produce abnormal noise when the motor is not powered;

[0052] In another embodiment, the buffer member 500 may be disposed on both the inner side wall 122 of the top surface 121 and the inner side wall 122 of the side wall 122. In this embodiment, since the buffer member 500 is disposed on both the inner side of the top surface 121 and the inner side of the side wall 122, it is possible to simultaneously prevent the lens carrier 300 and the frame 200 from colliding with the housing 120 and making abnormal noise when the motor is not powered on. In another embodiment, the buffer member 500 may be disposed only on the inner side wall 122 of the top surface 121. By disposing the buffer member 500, it is possible to effectively prevent the lens carrier 300 from colliding with the housing 120 and making abnormal noise when the motor is not powered on.

[0053] In one embodiment of the present invention, the buffer 500 can be made of liquid silicone rubber, TPC, TPU, TPE, etc. In addition, the liquid silicone rubber can be attached to the inner side of the outer cover in a sheet-like manner in addition to being injected.

[0054] In one embodiment of the present invention, the housing 120 is provided with a plurality of injection holes 1201; the injection holes 1201 include a groove 1202 and a through hole 1203 formed in the middle of the groove 1202; the buffer member 500 is disposed in the injection hole 1201 and forms a buffer portion 510 on the inner side of the housing 120; Figure 4-5 As shown, in one embodiment, the injection holes 1201 are respectively disposed on the top surface 121 and the side wall 122; the buffer member 500 is injected on the housing 120 by an embedded injection molding process; Figure 6-7 As shown, the buffer 500 includes a limiting portion 520 matched with the groove 1202, a connecting portion 530 matched with the through hole 1203, and a buffer portion 510 located on the inner side of the shell 120; through this connection structure, the buffer 500 can be stably connected to the shell 120, and the integrity is stronger;

[0055] In one embodiment of the present invention, the housing 120 is directly formed by stamping, so that the top surface 121 and the side wall 122 form an integral structure;

[0056] like Figure 8-10 As shown, in one embodiment of the utility model, the shell 120 is provided with a plurality of injection molding parts 1204; the injection molding parts 1204 include a plurality of fine holes 1205; the aperture of the fine holes 1205 gradually decreases from the outer side of the shell 120 to the inner side of the shell 120; the buffer 500 is arranged in the injection molding part 1204 and forms a buffer part 510 on the inner side of the shell 120; in this embodiment, the buffer 500 includes a limiting part 520 cooperating with the fine holes 1205 and a buffer part 510 located on the inner side of the shell 120; in one embodiment, the fine holes 1205 are arranged on the side wall 122, and the direction from the outer side of the shell 120 to the inner side of the shell 120 is the direction of the X-axis or the Y-axis pointing to the light inlet hole 123; in one embodiment, the fine holes 1205 are arranged on the top surface 121, and the direction from the outer side of the shell 120 to the inner side of the shell 120 is the direction of the Z-axis pointing to the inner side of the shell 120.

[0057] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An anti-shake motor for reducing abnormal noise, characterized in that: include A housing (100) having a hollow cavity formed therein; an OIS driving coil (220) is arranged in the housing (100); A movable component is movably arranged in the hollow cavity; the movable component comprises a frame (200) and a lens carrier (300) sleeved in the frame (200); the frame (200) is arranged in the hollow cavity and can move perpendicularly to the optical axis; a plurality of driving magnets (210) are arranged on the frame (200); the lens carrier (300) is arranged in the hollow cavity and can move along the optical axis; an AF driving coil (310) is arranged outside the lens carrier (300); A buffer member (500) is provided between the housing (100) and the movable component.

2. The anti-shake motor for reducing abnormal noise according to claim 1, characterized in that: The housing (100) comprises an outer shell (120) and a base (110); the bottom opening of the outer shell (120) is fixedly connected to the base (110) to form a hollow cavity inside.

3. The anti-shake motor for reducing abnormal noise according to claim 2, characterized in that: An upper spring sheet (400) is provided between the top of the lens carrier (300) and the inner top wall of the housing (100); the outer side of the upper spring sheet (400) is connected to the frame (200), and the inner side is connected to the lens carrier (300); the upper spring sheet (400) is electrically connected to a circuit board (111) provided in the housing (100) via a connecting piece (420); and the circuit board (111) is provided on the base (110).

4. The anti-shake motor for reducing abnormal noise according to claim 3, characterized in that: The upper spring sheet (400) comprises a plurality of independent upper spring support sheets (410); the inner side of each upper spring support sheet (410) is connected to the lens carrier (300) and the outer side is connected to the frame (200); the end of each upper spring support sheet (410) is connected to the circuit board (111) via a connecting piece (420).

5. The anti-shake motor for reducing abnormal noise according to claim 2, characterized in that: The OIS driving coil (220) is arranged on the upper end surface of the base (110).

6. The anti-shake motor for reducing abnormal noise according to claim 2, characterized in that: A lower spring sheet (430) is provided between the lens carrier (300) and the base (110); the lower spring sheet (430) is respectively connected to the frame (200) and the lens carrier (300).

7. An anti-shake motor with reduced abnormal noise according to any one of claims 2 to 6, characterized in that: The housing (120) comprises a top surface (121) and a side wall (122) formed by extending the edge of the top surface (121) along the optical axis direction; the buffer component (500) is arranged on the top surface (121) and / or the side wall (122).

8. The anti-shake motor for reducing abnormal noise according to claim 7, characterized in that: The buffer component (500) is arranged on the inner side of the housing (120); the buffer component (500) is a soft plastic sheet or an injection molded part.

9. The anti-shake motor for reducing abnormal noise according to claim 7, characterized in that: The shell (120) is provided with a plurality of injection holes (1201); the injection holes (1201) include a groove (1202) and a through hole (1203) formed in the middle of the groove (1202); the buffer member (500) is arranged in the injection hole (1201) and forms a buffer portion (510) on the inner side surface of the shell (120).

10. The anti-shake motor with reduced abnormal noise according to claim 7, characterized in that: The outer shell (120) is provided with a plurality of injection molding parts (1204); the injection molding parts (1204) include a plurality of fine holes (1205); the apertures of the fine holes (1205) gradually decrease from the outer side of the outer shell (120) to the inner side of the outer shell (120); the buffer component (500) is arranged in the injection molding parts (1204) and forms a buffer part (510) on the inner side surface of the outer shell (120).

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