CN111917273B - Ball motor, camera module and mobile terminal - Google Patents
Ball motor, camera module and mobile terminal Download PDFInfo
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- CN111917273B CN111917273B CN202010876905.0A CN202010876905A CN111917273B CN 111917273 B CN111917273 B CN 111917273B CN 202010876905 A CN202010876905 A CN 202010876905A CN 111917273 B CN111917273 B CN 111917273B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Studio Devices (AREA)
Abstract
The application provides a ball motor, module and mobile terminal make a video recording. The ball motor comprises a shell, a carrier and a base, wherein the carrier is arranged in the shell in a sliding mode, the base supports the shell, the shell is provided with a top plate far away from one side of the base and side plates located on the edges of the top plate, the side plates are connected with the base, and buffer structures are arranged between the top plate and the carrier and between the base and the carrier. This application is through setting up buffer structure between the roof at carrier and casing and between carrier and the base to when the ball motor rocks, when the carrier removes roof or base, through buffer structure's cushioning effect, with the reduction abnormal sound. The camera module and the mobile terminal using the ball motor can use a larger lens to improve the imaging quality and reduce abnormal sound during shaking.
Description
Technical Field
The application belongs to the technical field of camera devices, and more specifically relates to a ball motor, a camera module and a mobile terminal.
Background
With the emphasis of a user on the photographing function of a mobile terminal such as a mobile phone and a tablet computer, in order to improve the photographing effect experience, the configuration of the camera is more prone to increasing the collocation of the aperture lens by using a large-size image sensor. In order to adapt to a large-sized image sensor, the size of the voice coil motor and the size of the lens are also larger and heavier. The voice coil motor is divided into a leaf spring type voice coil motor and a ball type voice coil motor (ball motor for short). The spring type voice coil motor generally uses a spring to balance the torque, however, when the size and weight of the voice coil motor and the lens become larger, the suspension wire of the spring is easy to break. The ball motor guides the carrier for supporting the lens to move along the axial direction of the motor through balls, and the ball motor is applied to a large-size camera and can ensure good service life. However, when the mobile terminal is shaken by external force, the lens and the carrier in the ball motor move axially in the housing along the motor, so that the carrier impacts the motor housing and the base to generate an obvious abnormal sound, which affects user experience.
Disclosure of Invention
An object of the embodiment of the application is to provide a ball motor to solve the camera module group that uses ball motor that exists among the correlation technique when rocking, the carrier can strike motor casing and base, and produces obvious abnormal sound, influences user experience's problem.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the ball motor comprises a shell, a carrier and a base, wherein the carrier is arranged in the shell in a sliding mode, the base supports the shell, the shell is provided with a top plate far away from one side of the base and side plates located on the edges of the top plate, the side plates are connected with the base, and buffer structures are arranged between the top plate and the carrier and between the base and the carrier.
In an optional embodiment, the buffer structure includes a silicone protrusion protruding from the surface of the carrier.
In an alternative embodiment, the height of the silica gel protrusions from the support is in the range of 0.2mm to 0.5 mm.
In an optional embodiment, the area of the side of the silica gel protruding away from the carrier is in the range of 0.15mm2-0.5mm2。
In an optional embodiment, the middle part of one side of the silica gel protruding away from the carrier is provided with a concave groove.
In an optional embodiment, the ratio of the area of the middle part of the recessed groove in the depth direction to the area of the side, away from the carrier, corresponding to the silica gel protrusion ranges from 10% to 50%.
In an alternative embodiment, the ratio of the depth of the concave groove to the height of the corresponding silica gel protrusion from the carrier ranges from 0.3 to 0.6.
In an optional embodiment, a buffering bulge is convexly arranged in the middle of one side, away from the carrier, of the silica gel bulge.
In an optional embodiment, an annular groove is arranged on one surface, away from the carrier, of the silica gel bulge, and the annular groove is arranged around the buffering bulge.
In an optional embodiment, the carrier comprises a body and metal sheets respectively arranged at two ends of the body, and the silica gel is formed on the metal sheets in a protruding injection molding mode.
In an alternative embodiment, the buffer structure comprises foam protruding from the surface of the carrier.
Another objective of an embodiment of the present application is to provide a camera module, which includes a lens and the ball motor as described in any of the above embodiments, wherein the lens is mounted in the carrier.
It is another object of the embodiments of the present application to provide a mobile terminal, which includes a body, in which the camera module according to the embodiments is installed.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
the ball motor that this application embodiment provided through set up buffer structure between the roof at carrier and casing and between carrier and base to when the ball motor rocks, when the carrier moved to roof or base, through buffer structure's cushioning effect, with the reduction abnormal sound.
The camera module that provides of this application embodiment has used the ball motor of above-mentioned embodiment, can use bigger camera lens to promote imaging quality, and reduce the abnormal sound when rocking.
The mobile terminal who provides of this application embodiment has used above-mentioned module of making a video recording, can realize better quality of shooing, reduces the abnormal sound that rocks, promotes user experience.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a ball motor according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating an exploded structure of a ball motor according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an exploded structure of a ball motor according to an embodiment of the present disclosure;
fig. 4 is a schematic partial sectional structural view illustrating a first silicone rubber is formed on a metal sheet by injection molding according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a partial cross-sectional structure of a second silicone rubber when it is injection-molded on a metal sheet according to an embodiment of the present application;
FIG. 6 is a schematic view of a partial cross-sectional structure of a third silicone rubber when it is injection-molded on a metal sheet according to an embodiment of the present application;
FIG. 7 is a schematic view of a partial cross-sectional structure of a fourth silicone rubber when it is injection-molded on a metal sheet according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a camera module according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Wherein, in the drawings, the reference numerals are mainly as follows:
100-a mobile terminal;
10-a ball motor;
11-a carrier; 111-a body; 112-a metal sheet; 1121-through holes; 113-a chute; 12-a housing; 121-top plate; 122-side plate; 13-a base; 131-a bottom plate; 132-side frame; 1321-a slide; 141-coil; 142-a magnet; 15-a ball bearing; 16-a buffer structure; 160-silica gel convex; 162-a recessed groove; 163-buffer bumps; 164-ring groove;
20-a camera module; 21-a lens;
30-organism.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present application, it is to be understood that the terms "thickness," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be construed as limiting the present application.
Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 to 3, a ball motor 10 provided in the present application will now be described. The ball motor 10 comprises a shell 12, a carrier 11 and a base 13; the housing 12 is mounted on a base 13, and the housing 12 is supported by the base 13; the housing 12 has a top plate 121 and side plates 122, the side plates 122 are located at the edges of the top plate 121, the side plates 122 are connected to the base 13, and the top plate 121 is located at the side of the side plates 122 far away from the base 13. The carrier 11 is used for carrying a lens, and the carrier 11 is slidably mounted in the housing 12, so that the carrier 11 can slide in the housing 12 to move the lens in the housing 12 for focusing. In one embodiment, the magnet 142 may be mounted on the carrier 11, and the coil 141 may be fixed on the housing 12 or the base 13, so that the magnet 142 is driven by the coil 141 to move the carrier 11, thereby realizing auto-focusing, i.e. the structure forms a voice coil motor. Of course, it is also possible to mount the coil 141 on the carrier 11 and fix the magnet 142 on the housing 12 or the base 13, so that the magnet 142 drives the coil 141 to move, and thus the carrier 11 moves, and thus the auto-focusing is realized.
In one embodiment, referring to fig. 2 and fig. 3, the base 13 may be a frame structure, that is, the base 13 includes a bottom plate 131 and a side frame 132 disposed on the periphery of the bottom plate 131, the carrier 11 is slidably disposed in the side frame 132, and the side frame 132 is connected to the side plate 122 to be better fixedly connected to the housing 12, so as to ensure the stability of the ball motor 10. In other embodiments, the base 13 may be a plate structure, that is, the base 13 only includes the bottom plate 131, and the housing 12 is directly mounted on the bottom plate 131.
In one embodiment, the sliding grooves 113 may be formed on the outer side surface of the carrier 11, and the sliding grooves 113 are arranged along the thickness direction of the carrier 11 (the thickness direction of the carrier 11 is also the axial direction of the ball motor 10). Balls 15 are provided in the slide grooves 113 to guide the movement of the carrier 11 in the housing 12 to form the ball motor 10. In one embodiment, a slide 1321 may be formed on the side frame 132 at a position corresponding to the slide slot 113 to cooperate with the slide slot 113 to position the ball 15. In other embodiments, a slide 1321 may be provided on the side panel 122 of the housing 12 to cooperate with the slide slot 113 on the carrier 11 to position the ball 15. Of course, the ball 15 structure of the ball motor 10 may be provided in other ways, such as a linear guide structure using the ball 15.
Referring to fig. 2 and 3, the buffer structures 16 are disposed between the top plate 121 and the carrier 11 and between the base 13 and the carrier 11, that is, the buffer structure 16a is disposed between the top plate 121 and the carrier 11, and the buffer structure 16b is disposed between the base 13 and the carrier 11, so that when the ball motor 10 shakes and the carrier 11 moves toward the top plate 121 of the housing 12, the buffer structure 16 can play a role of buffering, and the carrier 11 is prevented from directly colliding with the top plate 121, thereby reducing abnormal sound; similarly, when the carrier 11 moves towards the base 13, the buffer structure 16 can play a role in buffering, so that the carrier 11 is prevented from directly colliding with the base 13, and abnormal sound can be reduced; that is, when the ball motor 10 is shaken, abnormal noise can be reduced.
In one embodiment, referring to fig. 2 and 3, the buffer structure 16 includes a plurality of silicone bumps 160, and the silicone bumps 160 may be disposed on the surface of the carrier 11. The silica gel projection 160 is used, a buffering effect can be well achieved, the size precision can be better controlled through the silica gel projection 160, and in addition, good durability and wider environment temperature adaptation can be further guaranteed.
In one embodiment, the silicone rubber protrusion 160 may be disposed on a side of the carrier 11 close to the top plate 121, that is, the buffer structure 16a between the top plate 121 and the carrier 11 is the silicone rubber protrusion 160, so that when the carrier 11 moves toward the top plate 121, the buffer protection may be performed by the silicone rubber protrusion 160.
Of course, in an embodiment, the silicone rubber protrusion 160 may also be disposed on a surface of the carrier 11 close to the base 13, that is, the buffer structure 16b between the base 13 and the carrier 11 is also the silicone rubber protrusion 160, so that when the carrier 11 moves toward the base 13, the silicone rubber protrusion 160 can be used for buffer protection.
In one embodiment, the silicone protrusions 160 may be disposed on both sides of the carrier 11, so that the carrier 11 can be protected by the silicone protrusions 160 when moving to the top plate 121 and the bottom plate 13.
In some embodiments, the cushioning structure 16 includes a plurality of foam pads, which may be disposed on opposite sides of the carrier 11, respectively, for cushioning by the foam pads. Specifically, foam may be bonded to the opposite surfaces of the carrier 11. In addition, foam can be respectively adhered to each corner of the opposite two surfaces of the carrier 11, so that the carrier 11 can be ensured to be stressed evenly when the foam is buffered. Of course, in some embodiments, foam may be provided on the top plate 121 and the base 13, respectively. In still other embodiments, foam may be provided on the carrier 11, the top plate 121, and the base 13, respectively. In still other embodiments, cushioning structure 16 may be made of a resilient material such as rubber.
In one embodiment, the buffer structure 16a between the top plate 121 and the carrier 11 may be a structure with elasticity such as silicone rubber, foam, rubber, etc. Of course, the buffer structure 16b between the base 13 and the carrier 11 may be a structure with elasticity such as silicone rubber, foam, rubber, etc. The structure of the buffer structure 16a between the top plate 121 and the carrier 11 may be the same as or different from the structure of the buffer structure 16b between the base 13 and the carrier 11. If the silicone rubber protrusion 160 is arranged on one side of the carrier 11, and the foam is arranged on the other side of the carrier 11; rubber may be provided on one side of the carrier 11 and foam may be provided on the other side of the carrier 11. Of course, in some embodiments, when the two sides of the carrier 11 are respectively provided with the silicone protrusions, the silicone protrusion 160 on the side of the carrier 11 close to the top plate 121 may have the same structure as the silicone protrusion 160 on the side of the carrier 11 close to the base 13. In some embodiments, the structure of the silicone rubber protrusion 160 on the side of the carrier 11 close to the top plate 121 may be different from the structure of the silicone rubber protrusion 160 on the side of the carrier 11 close to the base 13.
In one embodiment, silicone bumps 160 may be disposed at each corner of the opposite sides of the carrier 11, so that the buffering force of the silicone bumps 160 is equalized on the corresponding side of the carrier 11 when the carrier 11 moves toward the top plate 121 or the bottom plate 131.
In an embodiment, referring to fig. 2 and 4, the silicone rubber protrusion 160 is injection molded on the carrier 11, which not only ensures the firm connection between the silicone rubber protrusion 160 and the carrier 11, but also well controls the precision of the silicone rubber protrusion 160, and ensures the consistency of the structure of the silicone rubber protrusion 160.
In one embodiment, the carrier 11 includes a body 111 and metal sheets 112 respectively disposed at two ends of the body 111, and the metal sheets 112 are respectively disposed on two sides of the body 111 to ensure good strength of the carrier 11 for better supporting the lens. In other embodiments, the carrier 11 may be made of rigid plastic only.
In one embodiment, referring to fig. 2-4, the silicone rubber protrusion 160 is injection molded on the metal sheet 112. The silicone rubber protrusion 160 is formed on the metal sheet 112, so that injection molding is facilitated, the size of the silicone rubber protrusion 160 is convenient to control, and the silicone rubber protrusion 160 can be well supported. In other embodiments, the silicone rubber protrusion 160 may be directly injection-molded on the body 111.
In an embodiment, referring to fig. 4, a through hole 1121 is formed in the metal sheet 112, and the silicone protrusion 160 is injection-molded at a position corresponding to the through hole 1121, so that when the silicone protrusion 160 is injection-molded, the silicone protrusion 160 can penetrate through the through hole 1121 of the metal sheet 112, so as to fix the silicone protrusion 160 on the metal sheet 112 better.
In one embodiment, referring to fig. 2-4, the height H of the silicone rubber protrusion 160 protruding from the carrier 11 is in the range of 0.2mm-0.5 mm. When the metal sheets 112 are disposed at the two ends of the carrier 11, the height of the silicone rubber protrusion 160 from the carrier 11 is also the height of the silicone rubber protrusion 160 from the metal sheets 112. When the height H of the silicone rubber protrusion 160 protruding from the carrier 11 is less than 0.2mm, when the carrier 11 impacts the top plate 121 or the bottom plate 131, the deformation range of the silicone rubber protrusion 160 is small, the carrier 11 still impacts the top plate 121 or the bottom plate 131, and the abnormal sound eliminating effect is weak. When the height H of the silicone rubber protrusion 160 protruding from the carrier 11 is greater than 0.5mm, the thickness of the carrier 11 is increased too much, and the axial length of the ball motor 10 is increased greatly. The height H of the silica gel projection 160 protruding from the carrier 11 is 0.2mm to 0.5mm, so that abnormal noise can be well eliminated when the ball motor 10 shakes, and the axial length of the ball motor 10 can be ensured to be small.
In one embodiment, the area of the silicone projection 160 away from the side 161 of the carrier 11 is in the range of 0.15mm2-0.5mm2Thus, when the carrier 11 hits the top plate 121 or the bottom plate 131, the contact area of the silicone rubber protrusion 160 with the top plate 121 or the bottom plate 131 ranges from 0.15mm2-0.5mm2Therefore, the good buffer effect of the silica gel projection 160 can be ensured, the impact sound can be better weakened, and the abnormal sound can be reduced. And if the contact area of the silicone rubber protrusion 160 and the top plate 121 or the bottom plate 131 is less than 0.15mm2The silicone rubber protrusion 160 may be made less effective in attenuating the impact sound. When the contact area between the silicone rubber protrusion 160 and the top plate 121 or the bottom plate 131 is larger than 0.5mm2The size of the silicone rubber protrusion 160 is larger, which results in a larger area occupied on the carrier 11, and the silicone rubber protrusion 160 is adhered to the top plate 121 or the bottom plate 131, which affects focusing.
In one embodiment, referring to fig. 4, the silicone rubber protrusion 160 is far away from the surface 161 of the carrier 11 to facilitate manufacturing and control the area of the surface 161 of the silicone rubber protrusion 160 far away from the carrier 11.
In one embodiment, referring to fig. 4, the portion of the silicone rubber protrusion 160 protruding from the carrier 11 is in a truncated cone shape, so as to facilitate injection molding.
In one embodiment, referring to fig. 5, the silicone protrusion 160 has a concave groove 162 in the middle of a side 161 away from the carrier 11, so that when the carrier 11 impacts the top plate 121 or the bottom plate 131, when sound generated by the impact of the silicone protrusion 160 with the top plate 121 or the bottom plate 131 enters the concave groove 162, the sound energy can be attenuated, so as to attenuate the outgoing sound, and further reduce the abnormal sound.
In one embodiment, the ratio of the area of the middle portion of the recessed groove 162 in the depth direction to the area of the corresponding side 161 of the silicone protrusion 160 away from the carrier 11 ranges from 10% to 50%. The area of the middle portion in the depth direction of the concave groove 162 means the cross-sectional area of the middle portion in the depth direction of the concave groove 162. The larger the cross-sectional area of the concave groove 162 is, the better the sound attenuation capability is, however, the larger the deformation of the corresponding silicone rubber protrusion 160 is, which causes the carrier 11 to easily impact the top plate 121 or the bottom plate 131, and rather generates larger abnormal sound; when the cross section of the concave groove 162 is smaller, the sound attenuation effect is not obvious enough, and the ratio of the area of the middle part of the concave groove 162 in the depth direction to the area of the surface 161 of the corresponding silica gel protrusion 160 away from the carrier 11 is 10% -50%, so that abnormal sound can be well attenuated, and the good elastic buffer effect of the silica gel protrusion 160 can be ensured.
In one embodiment, the inner diameter of the recess 162 is tapered from the mouth to the bottom of the recess 162 to facilitate injection molding. In some embodiments, the recess groove 162 is circular and has a uniform inner diameter throughout the depth thereof to facilitate designing the cross-sectional dimension of the recess groove 162.
In one embodiment, the ratio of the depth H1 of the concave groove 162 to the height H of the corresponding silicone bump 160 protruding from the carrier 11 ranges from 0.3 to 0.6. The larger the depth h1 of the concave groove 162 is, the better the corresponding abnormal sound attenuation effect is; however, when the depth H1 of the concave groove 162 is too large, i.e. the ratio of the depth of the concave groove 162 to the height H of the corresponding silicone protrusion 160 protruding from the carrier 11 is greater than 0.6, the deformation of the silicone protrusion 160 is also larger, so that the carrier 11 easily collides with the top plate 121 or the bottom plate 131, and a larger abnormal sound is generated; when the depth H1 of the concave groove 162 is small, i.e. the ratio of the depth H1 of the concave groove 162 to the height H of the corresponding silicone protrusion 160 protruding from the carrier 11 is less than 0.3, the sound-attenuating effect is not significant enough. The ratio of the depth H1 of the concave groove 162 to the height H of the corresponding silicone rubber protrusion 160 protruding from the carrier 11 is in the range of 0.3-0.6, so that abnormal noise can be well attenuated, and a good elastic buffer effect of the silicone rubber protrusion 160 can be ensured.
In one embodiment, the height H of the silicone projection 160 protruding from the metal sheet 112 is 0.28mm, the maximum outer diameter D1 of the silicone projection 160 is 0.84mm, the diameter D2 of the median plane of the concave groove 162 is 0.4mm, and the depth H1 of the concave groove 162 is 0.15mm, so that the silicone projection 160 can play a good role in attenuating abnormal noise. The median plane of the concave groove 162 means a cross section of the middle of the concave groove 162 in the depth direction.
In the present embodiment, a comparative experiment was performed by using the ball motor 10 of the present embodiment and an existing ball type voice coil motor of the same size. The ball motor 10 of the present embodiment and the conventional ball-type voice coil motor have the length, width, and height dimensions of 15mm 5.5mm, wherein the weight of the lens mounted on the carrier is 530mg, and the total weight of the carrier and the lens is 1450 mg. The ball motor 10 and the existing ball type voice coil motor are arranged on a rotating mechanism, the rotating mechanism drives the motor to rotate to simulate shaking, wherein the rotating angle of a rotating shaft of the rotating mechanism is 5-15 degrees, the rotating angular speed is 25 degrees/s, and the rotating acceleration is 0.1 degrees/s2. The height H of the silicone projection 160 protruding from the metal sheet 112 is 0.28mm, the maximum outer diameter D1 of the silicone projection 160 is 0.84mm, the diameter D2 of the median plane of the concave groove 162 is 0.4mm, and the depth H1 of the concave groove 162 is 0.15 mm. The test was performed several times by 5 ball motors 10 and 5 existing ball voice coil motors, and the average of the sounds produced by each motor test was taken, resulting in the following table:
abnormal sound test meter
As can be seen from the above table, through the multiple sets of comparative experiments between the ball motor 10 of the present embodiment and the existing ball-type voice coil motor with the same size, the scheme of disposing the silicone rubber protrusions 160 on the opposite sides of the carrier 11 in the present application can reduce the abnormal sound by about 5 dB.
In one embodiment, referring to fig. 6, the middle portion of the side 161 of the silicone rubber protrusion 160 away from the carrier 11 is provided with a buffer protrusion 163 in a protruding manner, so that when the carrier 11 impacts the top plate 121 or the bottom plate 131, the buffer protrusion 163 can contact the top plate 121 or the bottom plate 131 first and elastically deform first, so that the buffer action force of the silicone rubber protrusion 160 is gradually increased to better reduce the sound generated by the impact, and reduce the abnormal sound.
In one embodiment, the height H of the silicone projection 160 protruding from the metal sheet 112 is 0.27mm, and the maximum outer diameter D1 of the silicone projection 160 is 0.84mm, so that the silicone projection 160 can play a good role in attenuating abnormal noise.
In one embodiment, referring to fig. 7, a buffer protrusion 163 is convexly disposed in a middle portion of a side 161 of the silicone protrusion 160 away from the carrier 11, and a ring groove 164 is disposed on the side 161 of the silicone protrusion 160 away from the carrier 11, the ring groove 164 is disposed around the buffer protrusion 163, when the carrier 11 impacts the top plate 121 or the bottom plate 131, the buffer protrusion 163 may first contact the top plate 121 or the bottom plate 131 and first elastically deform, so that a buffer acting force of the silicone protrusion 160 gradually increases to reduce an impact sound; in addition, when the sound of the impact is conducted into the ring groove 164, the sound transmission can be weakened, and the transmitted sound can be further weakened, so that abnormal sound can be better reduced.
Referring to fig. 8, an embodiment of the present application further discloses a camera module 20, which includes a lens 21 and the ball motor 10 according to any of the above embodiments, wherein the lens 21 is installed in the carrier 11. The camera module 20, using the ball motor 10 of the above embodiment, can use a larger lens 21 to improve the imaging quality and reduce the abnormal sound during shaking.
Referring to fig. 9, an embodiment of the present application further discloses a mobile terminal 100, which includes a body 30, and the camera module 20 according to the embodiment is installed in the body 30. This mobile terminal 100 has used above-mentioned module 20 of making a video recording, can realize better quality of shooing, reduces the abnormal sound that rocks, promotes user experience.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. The ball motor comprises a shell, a carrier and a base, wherein the carrier is arranged in the shell in a sliding mode, the base supports the shell, the shell is provided with a top plate far away from one side of the base and a side plate located on the edge of the top plate, and the side plate is connected with the base;
the buffer structure comprises a silica gel bulge which is arranged on the surface of the carrier in a protruding mode;
the height range of the silica gel bulges protruding out of the carrier is 0.2mm-0.5mm, and the parts of the silica gel bulges protruding out of the carrier are in a circular truncated cone shape; the protruding area range of keeping away from the carrier one side of silica gel is 0.15mm2-0.5mm2；
The middle part of the silica gel bulge, which is far away from one surface of the carrier, is provided with a concave groove; the ratio of the area of the middle part of the concave groove in the depth direction to the area of the side, which is far away from the carrier, of the corresponding silica gel protrusion ranges from 10% to 50%; the inner diameter of the concave groove is reduced from the opening part to the bottom of the concave groove; the ratio of the depth of the concave groove to the height of the silica gel protruding out of the carrier is 0.3-0.6;
the carrier comprises a body and metal sheets respectively arranged at two ends of the body, and the silica gel is formed on the metal sheets in a protruding injection molding mode;
the height of the silica gel projection protruding out of the metal sheet is 0.28mm, the maximum outer diameter of the silica gel projection is 0.84mm, the diameter of the median plane of the concave groove is 0.4mm, and the depth of the concave groove is 0.15 mm; the middle position surface of the concave groove refers to the cross section of the middle part of the concave groove in the depth direction.
2. The ball motor of claim 1, wherein: the convex middle part of keeping away from the carrier one side of silica gel is convexly provided with a buffering bulge.
3. The ball motor of claim 2, wherein: the protruding ring groove that is equipped with of keeping away from of silica gel on the carrier one side, the ring groove centers on the protruding setting of buffering.
4. The ball motor of claim 1, wherein: the buffer structure comprises foam protruding from the surface of the carrier.
5. The module of making a video recording, including the camera lens, its characterized in that: further comprising a ball motor according to any of claims 1-4, said lens being mounted in said carrier.
6. Mobile terminal, including the organism, its characterized in that: the camera module set of claim 5 is installed in the machine body.
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| CN202010876905.0A CN111917273B (en) | 2020-08-27 | 2020-08-27 | Ball motor, camera module and mobile terminal |
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| CN202010876905.0A CN111917273B (en) | 2020-08-27 | 2020-08-27 | Ball motor, camera module and mobile terminal |
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| CN111917273A CN111917273A (en) | 2020-11-10 |
| CN111917273B true CN111917273B (en) | 2022-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118100583A (en) * | 2022-11-17 | 2024-05-28 | 宁波舜宇光电信息有限公司 | Optical lens driving motor |
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| JP2000356960A (en) * | 1999-04-12 | 2000-12-26 | Mitsubishi Electric Corp | Monitor device and its installation table |
| WO2017123604A1 (en) * | 2016-01-15 | 2017-07-20 | Cts Corporation | Actuator |
| CN210744923U (en) * | 2019-12-20 | 2020-06-12 | 嵊州市凯鑫电器制造厂 | Environment-friendly scavenger fan motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6273491B2 (en) * | 2013-10-22 | 2018-02-07 | 新シコー科技株式会社 | Lens driving device, camera device, and electronic device |
| CN107846486B (en) * | 2017-10-31 | 2019-09-20 | Oppo广东移动通信有限公司 | A kind of camera unit and mobile terminal |
| CN210201693U (en) * | 2019-08-06 | 2020-03-27 | 包头江馨微电机科技有限公司 | Novel voice coil motor |
| CN111478549A (en) * | 2020-05-21 | 2020-07-31 | 江苏新鑫星科技有限公司 | Voice coil motor for camera module |
-
2020
- 2020-08-27 CN CN202010876905.0A patent/CN111917273B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000356960A (en) * | 1999-04-12 | 2000-12-26 | Mitsubishi Electric Corp | Monitor device and its installation table |
| WO2017123604A1 (en) * | 2016-01-15 | 2017-07-20 | Cts Corporation | Actuator |
| CN210744923U (en) * | 2019-12-20 | 2020-06-12 | 嵊州市凯鑫电器制造厂 | Environment-friendly scavenger fan motor |
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| CN111917273A (en) | 2020-11-10 |
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