CN117939271A - Anti-shake motor of image sensor - Google Patents
Anti-shake motor of image sensor Download PDFInfo
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- CN117939271A CN117939271A CN202410341108.0A CN202410341108A CN117939271A CN 117939271 A CN117939271 A CN 117939271A CN 202410341108 A CN202410341108 A CN 202410341108A CN 117939271 A CN117939271 A CN 117939271A
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Abstract
The invention belongs to the technical field of image acquisition equipment, and discloses an image sensor anti-shake motor which comprises a motion mechanism, a fixing mechanism and a fixing piece, wherein the motion mechanism is arranged on the image sensor anti-shake motor; the motion mechanism comprises an electric board assembly, wherein the electric board assembly comprises a first circuit board and a second circuit board, the first circuit board is used for installing an image sensor, and the first circuit board and the second circuit board are respectively and independently externally connected with a first plugboard and a second plugboard; the fixing piece is detachably connected to the first circuit board and the second circuit board; the fixing piece is connected with the fixing mechanism through damping glue. The invention can effectively improve the anti-shake capacity of the industrial camera, can carry different types of image sensors, and has a larger working condition application range.
Description
Technical Field
The invention belongs to the technical field of image acquisition equipment, and particularly relates to an anti-shake motor of an image sensor.
Background
In the use of some industrial equipment, need utilize industrial camera to carry out image shooting, in the in-process of using, when industrial camera moves on its carried equipment, bear the weight of the equipment self operation of this camera and can produce vibration to can drive industrial camera and vibrate together, make it lead to the picture unclear when carrying out industrial recognition, reduce the quality of image, influence recognition accuracy.
However, most of the current anti-shake modes realize anti-shake by vibration isolation of equipment carrying industrial cameras or vibration isolation of the whole camera, so that the anti-shake effect is weak and uncontrollable; in addition, for the whole structure of the camera, different image sensors are required to be adopted for different working conditions, so that the camera needs to be customized for each working condition, and the material cost is high.
Disclosure of Invention
In order to solve at least one technical problem, the invention discloses an image sensor anti-shake motor which can effectively improve the anti-shake capacity of an industrial camera, can be provided with image sensors of different types, and has a larger working condition application range.
The specific technical scheme of the invention is as follows:
An image sensor anti-shake motor, comprising:
the device comprises a motion mechanism and a fixing mechanism, wherein a driving mechanism and a suspension board are arranged between the motion mechanism and the fixing mechanism, the motion mechanism comprises an electric board assembly, the electric board assembly comprises a first circuit board and a second circuit board, the first circuit board is used for installing an image sensor, and the first circuit board and the second circuit board are respectively and independently externally connected with a first plugboard and a second plugboard;
the fixing piece is detachably connected to the first circuit board and the second circuit board;
wherein the fixing piece is connected with the fixing mechanism through damping glue; or alternatively
The damping piece is arranged between the electric plate component and the fixing mechanism, one of the damping piece is fixedly connected with the damping piece, and the other damping piece is connected with the damping piece through damping glue.
When the industrial camera shakes, displacement anti-shake is realized through the motion mechanism, namely, when the camera vibrates under the action of external force, a damping force for resisting the external force is generated through the motion mechanism, and the damping force is opposite to the external force in direction, so that anti-shake can be well realized in the process, in the structure, in order to further reduce obvious acceleration caused when the motor is started or shake is generated, the influence of smoothness caused by obvious acceleration can be well reduced by utilizing the damping piece, and the image effect is better improved; meanwhile, because the image sensor is independently arranged on the first circuit board and the electrical components arranged on the second circuit board are two different circuits, when the motor circuit is disconnected, the image sensor is still kept in an operation state, so that the operation of any one party is not influenced by the other party, and the use requirement is met under different practical conditions.
Preferably, the fixing mechanism comprises a cover plate and a bottom plate which are detachably connected; the first circuit board is positioned on one side of the bottom plate far away from the cover plate; the circuit board is located between the cover plate and the bottom plate.
Because the circuit board II is positioned at the outer side of the motor, and the circuit board II and the circuit board I are detachably connected through the fixing piece, the circuit board II can be detached from the motor on the basis that the whole motor does not need to be detached, and the circuit board II can be directly reassembled on the motor after the image sensor is replaced or maintained, so that the purpose of quickly disassembling and assembling the image sensor is achieved.
Preferably, the driving mechanism includes:
the driving coil is arranged on the second circuit board;
the magnet is arranged on the cover plate;
The magnetic sheet is arranged on the second circuit board, and a magnetic attraction state is formed between the magnetic sheet and the magnet;
The plane guide member is arranged between the cover plate and the second circuit board;
wherein, the drive coil is electrified to cooperate with the magnet to drive the drive mechanism to displace relative to the fixed mechanism.
Because magnetite and magnetic sheet inhale mutually, consequently can guarantee that the motion displacement of circuit subassembly can only be in the plane of perpendicular to optical axis, on this basis, in order to avoid the relative run-out that the shake leads to, utilize the plane guide member spacing in the direction of optical axis extension, further ensure that circuit subassembly can only move in the plane of perpendicular to optical axis to the better purpose that satisfies anti-shake displacement.
Preferably, the planar guide member includes balls and ball grooves, and the ball grooves are arranged on the cover plate or the second circuit board; or the plane guiding component comprises a self-lubricating piece, wherein the self-lubricating piece is fixedly arranged on one of the cover plate and the circuit board II, and the plane is contacted with the other one of the cover plate and the circuit board II.
The ball can realize self-rolling point contact, so that the requirement of plane movement is met on the basis of movement limit in the optical axis direction; the self-lubricating piece can move in a plane contact mode to limit, on the basis, concave points of the parts caused by collision of the balls are avoided, and meanwhile, movement dents caused by repeated movement of the balls can be avoided, so that poor displacement anti-shake effect is caused.
Preferably, the method further comprises:
The gasket comprises a body, a deformation part and a connecting part, wherein the connecting part is connected with the body through the deformation part, and the width of the deformation part is smaller than that of the connecting part;
The fixing piece penetrates through the connecting part and presses the gasket on the second circuit board through the nut;
The balls are in point contact with the pads.
The second circuit board can be protected from being damaged by the nut by the gasket, torsion force can be generated at the contact position between the gaskets of the nut in the screwing process of the nut, and at the moment, the connecting part deforms under the action of the torsion force, so that the connecting part twists relative to the body, and the damage force of the torsion force to the second circuit board is buffered.
Preferably, the fixing piece is configured as a damping piece, and the end part of the fixing piece is connected with the cover plate through damping glue; the bottom plate is provided with an avoidance hole for avoiding the fixing piece; and/or one of the bottom plate and the circuit board is provided with a damping piece, the other one is provided with a damping hole for filling damping glue, and the damping piece extends into the damping hole.
The damping piece matched with the damping glue can further resist external force to damp and buffer vibration, so that the problem of poor image quality caused by obvious acceleration can be better avoided when the motor is started or vibration is generated.
Preferably, the radial cross section of the connecting part of the damping piece and the damping glue is circular.
Because the radial section of the connecting part of the damping piece and the damping glue is circular, when the movable mechanism and the fixed mechanism generate relative motion in a plane, the contact area of the connecting part and the damping glue is consistent, so that the damping effect generated by the damping piece in all directions is consistent, and the image stability is realized more stably in the anti-shake vibration reduction process.
Preferably, the second circuit board is provided with a gyroscope for anti-shake driving and at least three hall sensors for anti-shake displacement control.
In general, two hall sensors are disposed in an anti-shake motor to detect displacement changes of a motion mechanism, and such detection is limited to detecting translation along a plane perpendicular to an optical axis, and rotation about a center cannot be detected, so that a requirement of anti-shake for displacement cannot be well met for attraction or repulsion generated between magnetic force generated by a driving coil and a magnet, that is, a magnetic force for relatively rotating a circuit assembly cannot be opposed by adjusting the magnitude and/or direction of current introduced by the driving coil, and therefore, detection of rotational displacement can be well realized by using three or more hall sensors, so that the requirement of anti-shake for displacement is better met.
Preferably, the second circuit board is provided with three hall sensors, a plane perpendicular to the optical axis is an X-Y plane, wherein the two hall sensors are arranged on two sides of the second circuit board and are positioned in the X-axis direction, and the other hall sensor is arranged in the Y-axis direction.
The three Hall sensors are configured to detect the minimum quantity of the plane movement displacement and the rotation displacement, which is beneficial to saving the electrical cost, and simultaneously, the optimization of the whole structure of the motor is realized in a reasonable layout mode.
Preferably, the first plugboard is arranged on the image sensor; the first circuit board is provided with a guide part for positioning the first guide plugboard.
The guide part can enable the image sensor to be quickly mounted on the first circuit board, so that the assembly process efficiency is improved.
Compared with the prior art, the displacement anti-shake device can realize displacement anti-shake of an industrial camera, replaces passive anti-shake with active anti-shake, further satisfies the stability of image acquisition and satisfies the acquisition effect of images; the invention can realize quick image sensor replacement, and is convenient for dismounting the image sensor, so that the anti-shake motor can be applied to different environmental working conditions, and the application range is effectively enlarged; the damping piece is added, so that the damping effect of the motor in different directions is consistent, and an industrial camera can obtain a better image; in addition, the invention reasonably utilizes the motor space, and can effectively detect the plane displacement and the rotation displacement of the circuit component through reasonable layout, thereby better realizing the high-precision control of displacement anti-shake, and further enabling the industrial camera to acquire high-quality images.
Drawings
FIG. 1 is an exploded view of an embodiment of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a schematic view of a fixing member according to an embodiment of the present invention;
FIG. 6 is a schematic layout of a Hall sensor according to an embodiment of the present invention;
FIG. 7 is a schematic view of a gasket according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a first circuit board according to an embodiment of the invention;
FIG. 9 is a schematic view of other embodiments of the present invention;
Fig. 10 is a schematic diagram of still other embodiments of the present invention.
In the figure: 1-a fixing piece; 2-first circuit board; 3-a second circuit board; 4-an image sensor; 5-plugboard I; 6-a second plugboard; 7-damping gel; 8-cover plate; 9-a bottom plate; 10-a light-sensing hole; 11-an inner plate; 12-an outer plate; 13-spring wire; 14-avoiding holes; 15-a first end; 16-a second end; 17-a positioning part; 18-a guide; 19-a guide; 20-driving the coil; 21-a magnet; 22-magnetic sheet; 23-balls; 24-round bench; 25-a gasket; 26-body; 27-a deformation part; 28-connecting part; 29-hall sensor; 30-self-lubricating piece; 31-damping member.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following specific embodiments.
As shown in fig. 1 to 8, an image sensor anti-shake motor includes a moving mechanism and a fixing mechanism, and a fixing member 1; the motion mechanism comprises an electric board assembly, wherein the electric board assembly comprises a first circuit board 2 and a second circuit board 3, the first circuit board 2 is used for installing an image sensor 4, and the first circuit board 2 and the second circuit board 3 are respectively and independently externally connected with a plugboard I5 and a plugboard II 6; the fixing piece 1 is detachably connected with the first circuit board 2 and the second circuit board 3; the fixing piece 1 is connected with the fixing mechanism through damping glue 7. Further, the fixing mechanism comprises a cover plate 8 and a bottom plate 9 which are detachably connected; the first circuit board 2 is positioned on one side of the bottom plate 9 away from the cover plate 8; the second circuit board 3 is located between the cover plate 8 and the bottom plate 9.
In the present embodiment, the cover plate 8 has a photosensitive hole 10 for exposing the image sensor 4. The suspension board comprises an inner board 11 and an outer board 12, and a spring wire 13 is connected between the inner board 11 and the outer board 12; the inner plate 11 is connected with the second circuit board 3, the outer plate 12 is connected with the fixing mechanism, specifically, the outer plate 12 is pressed between the cover plate 8 and the bottom plate 9, and the fixing assembly is realized through screws or bolts; and the second circuit board 3 supplies power for the driving mechanism. When the shake occurs, the inner plate 11 will displace relative to the outer plate 12, and the driving mechanism is powered to drive the inner plate 11 to move relative to the outer plate 12 to compensate the shake displacement, so that the position stability of the image sensor 4 in the circuit assembly is maintained, and the industrial camera can obtain high image information. After the industrial camera stops working, the driving mechanism is powered off, and the inner plate 11 is reset under the deformation force of the elastic wire 13. In this embodiment, the damping glue 7 provides a basic damping force in the shaking process, so as to avoid the sudden acceleration excessively formed in the shaking process, so as to better realize anti-shaking, specifically, the fixing piece 1 is configured as a damping piece 31, and the end part of the fixing piece 1 is connected with the cover plate 8 through the damping glue 7; the bottom plate 9 is provided with a relief hole 14 for avoiding the fixing member 1. As shown in fig. 5, the fixing element 1 further has a first end 15 and a second end 16, the first end 15 is connected to the cover plate 8 through the damping glue 7, that is, on the basis of the connection of the first circuit board 2 and the second circuit board 3 by the fixing element 1, the damping glue can be used as a damping element 31 for damping vibration, and it is known that the damping glue 7 is a semi-solid substance with viscoelasticity, so that corresponding damping vibration can be realized in the process of moving the movable mechanism relative to the fixed mechanism.
In this embodiment, the first end 15 and the second end 16 are coaxial, such that the first end 15 is connected to the second circuit board 3, the second end 16 is connected to the first circuit board 2, and the first end 15 and the second end 16 are configured as cylinders with external threads. Still further, the columns are connected to the corresponding circuit boards through nuts. By the technical scheme of the embodiment, the first circuit board 2 and the second circuit board 3 are locked between the two nuts. It is emphasized that if the cylinder and the circuit board are directly connected by means of a threaded connection, the circuit board must be provided with a threaded hole, but for the circuit board, the thickness of the threaded hole is generally not suitable, so that the thickness of some parts in the circuit board will be increased by means of the direct threaded connection, and thus the material cost and the process cost will be increased, and the processing precision is not easily ensured. On this basis, a positioning part 17 is arranged between the first end 15 and the second end 16, the outer diameter of the positioning part 17 is larger than the outer diameters of the first end 15 and the second end 16, in the assembly process, the first end 15 passes through the second circuit board 3 and then is locked by a nut, and the second end 16 passes through the first circuit board 2 and is locked by another nut, obviously, the first circuit board 2 is positioned between one nut and the positioning part 17, and the second circuit board 3 is positioned between the other nut and the positioning part 17, so that the installation of a circuit assembly can be well realized. Then, the first end 15 is inserted into the cover plate 8, and the damping glue 7 is injected, so that the assembly between the first circuit board 2 and the second circuit board 3 is realized, and meanwhile, the damping fit between the second circuit board 3 and the cover plate 8 is realized. Further, a guiding portion 18 is provided between the first end 15 and the positioning portion 17, and between the second end 16 and the positioning portion 17. The outer diameter of the guiding part 18 is larger than the outer diameter of the first end 15 and the outer diameter of the second end 16 and smaller than the outer diameter of the positioning part 17, so that the diameter gradient is reduced in the process that the fixing piece 1 extends from the positioning part 17 to two ends, and the assembly positioning requirement and the fastening operation requirement are met. In this embodiment, the first circuit board 2 is located at the outer side of the anti-shake motor, so the fixing member 1 needs to extend from the bottom plate 9 to the inner side of the cover plate 8, so the embodiment provides the avoiding hole 14 on the bottom plate 9, and provides a suitable movement space for the movement of the movable mechanism relative to the fixing mechanism on the basis of meeting the assembly requirement of the fixing member 1, thereby avoiding poor vibration reduction effect caused by insufficient movement and anti-shake.
As shown in fig. 1 and fig. 4, in the present embodiment, the first circuit board 2 and the second circuit board 3 are respectively and independently connected with the first board 5 and the second board 6, so that the first circuit board 2 can independently supply power to the image sensor 4, and the second circuit board 3 can independently supply power to the driving mechanism, so that the on-off of the two circuits is not affected during the use. The arrangement of the first circuit board 2 is based on the replacement of the image sensor 4, pin pins led out by different sensors are different, if the first circuit board 2 and the second circuit board 3 adopt the same plugboard, interfaces cannot be uniformly defined, and in addition, after the motor circuit is separated from the circuit of the image sensor 4, later maintenance can be facilitated.
As shown in fig. 4 and 8, in the present embodiment, in order to facilitate the disassembly and assembly of the image sensor 4, the first board 5 is disposed on the image sensor 4; the first circuit board 2 is provided with a guide 19 for positioning the first guide board 5. The guiding portion 19 is a square hole structure protruding from the first circuit board 2 and facing to a side far away from the cover plate 8, and the hole structure is matched with the first plugboard 5, so that the image sensor 4 can be quickly positioned and assembled on the first circuit board 2.
As shown in fig. 1,3, 4, and 6, in the present embodiment, the driving mechanism includes a driving coil 20, a magnet 21, a magnet sheet 22, and a planar guide member; the driving coil 20 is arranged on the second circuit board 3; the magnet 21 is arranged on the cover plate 8; the magnetic sheet 22 is arranged on the second circuit board 3, and a magnetic attraction state is formed between the magnetic sheet 22 and the magnet 21; the plane guide member is arranged between the cover plate 8 and the second circuit board 3; the driving coil 20 is energized to drive the driving mechanism to displace relative to the fixing mechanism in cooperation with the magnet 21. The second circuit board 3 can be always subjected to the planar guide member by the magnetic attraction state formed between the magnetic sheet 22 and the magnet 21, that is, the planar guide member is limited in the extending direction of the optical axis, so that the circuit component is prevented from being displaced in the extending direction of the optical axis, and the circuit component can only move along the plane perpendicular to the optical axis. The driving coil 20 is welded on the second circuit board 3 to realize power-on through the second circuit board 3, so as to form magnetic induction fit with the magnet 21, thereby realizing anti-shake driving of the circuit assembly. The apron 8 is last to be provided with the magnetite groove, magnetite 21 passes through the magnetite groove location, and is fixed through the mode of pasting finally, and is corresponding, driving coil 20's position to and the position of magnetic sheet 22 all correspond with magnetite 21, thereby better satisfy concrete operation requirement, in addition, driving coil 20 in this embodiment is runway type structure, magnetic sheet 22 sets up in driving coil 20's inboard, in order to realize reasonable layout.
In the present embodiment, the planar guide member includes balls 23 and ball grooves, which are arranged on the cover plate 8 or the circuit board two 3. Further, the cover plate 8 protrudes toward the bottom plate 9 to be provided with a round table 24, and the ball grooves are formed in the round table 24. The inner diameter of the ball groove is slightly larger than the outer diameter of the ball 23, and the height of the ball groove is slightly smaller than the outer diameter of the ball 23, so that when the ball 23 is fitted into the ball groove, one part of the ball 23 is positioned inside the circular table 24 and the other part is positioned outside the circular table 24 to achieve point contact with the circuit board two 3 through the part. In this way, in the optical axis direction, the limit in the optical axis direction is realized through the ball 23, so that the movement efficiency of displacement shake prevention is improved based on the point contact of the ball 23. Of course, in some embodiments, the round table 24 may also be disposed on the second circuit board 3, and in this case, the limitation of the optical axis direction may also be achieved by the balls 23.
As shown in fig. 1 and 7, in the present embodiment, the gasket 25 further includes a gasket 25, the gasket 25 includes a body 26, a deformation portion 27, and a connection portion 28, the connection portion 28 is connected to the body 26 through the deformation portion 27, and the width of the deformation portion 27 is smaller than that of the connection portion 28; the fixing piece 1 passes through the connecting part 28, and the gasket 25 is pressed on the second circuit board 3 through the nut; the balls 23 are in point contact with the pads 25. The first circuit board 2 and the second circuit board 3 can be lapped on the positioning part 17 and then locked by nuts. Since the front side of the second circuit board 3 is a circuit part, the tightening of the nut may damage the circuit, and thus, in order to avoid the tightening of the nut damaging the second circuit board 3, the second circuit board 3 is protected by the spacer 25, that is, the second circuit board 3 is locked by tightening the spacer 25 by the nut. The connecting part 28 and the body 26 are transited through the deformation part 27 with smaller width, so that the connecting part 28 can be displaced relative to the body 26 due to friction force in the screwing process of the nut, thereby reducing the damage of the screwing of the nut to the circuit board II 3, and the connecting part 28 has a certain area, so that the possibility of damage can be well reduced. In this embodiment, the balls 23 also act on the pads 25 to meet the requirements of protecting the circuit board two 3. Therefore, the spacer 25 does not affect the second circuit board 3 even if an impact point is generated or a moving dent is formed, except for ensuring that the second circuit board 3 is not damaged by the nut and the balls 23.
In this embodiment, the second circuit board 3 is provided with a gyroscope for anti-shake driving, and at least three hall sensors 29 for anti-shake displacement control. As shown in fig. 6, further, the second circuit board 3 is provided with three hall sensors 29, and a plane perpendicular to the optical axis is an X-Y plane, where two hall sensors 29 are disposed on two sides of the second circuit board 3 and located in the X-axis direction, and the other hall sensor 29 is disposed in the Y-axis direction. The hall sensors 29 are installed inside the corresponding driving coils 20. It is known that the gyroscope and the hall sensor 29 are powered through a second circuit board 3, and the second circuit board 3 is further provided with an MCU for transmitting and calculating a base signal. In one technical scheme, during translation, the signal detected by the hall sensor 29 is compared with the signal sent by the MCU in the comparator, if the signals given by the hall sensor 29 and the MCU are inconsistent, the driver continuously outputs current until the signals are consistent, and the driver stops increasing the output current, namely, moves to a position with a specified distance, so that displacement anti-shake is realized. In another technical scheme, the hall sensor 29 transmits the detected signal to the MCU, the MCU acquires position information after processing, judges whether the specified position is reached, if the specified position is not reached, the MCU sends an instruction to the driver, and the MCU carries the circuit component to continue moving through the driving coil 20; after reaching the appointed position, the MCU sends out an instruction to the driver to stop increasing the output current, thereby realizing displacement anti-shake. For the above technical solution, for the rotation displacement, the signals detected by the gyroscopes at two sides of the same axis have a difference value, and the rotation angle can be obtained by calculation, so as to feed back the current output by the MCU to the driving coil 20 in different directions and/or magnitudes, so that the driving coil 20 carries the circuit component to move to realize the following motion of the image sensor 4; in this process, the gyroscope detects the position of the driving coil 20 at the moment and continuously feeds back to the MCU, thereby forming a detection control closed loop, and satisfying displacement anti-shake. The rotation described in this embodiment refers to rotation in a plane perpendicular to the optical axis direction on the basis of the provision of the plane guide member.
Unlike the above-described embodiment, as shown in fig. 9, the plane guide member includes a self-lubricant 30, and in the cover plate 8 and the second circuit board 3, the self-lubricant 30 is fixedly provided in one of them, and the plane is in contact with the other one. The self-lubricating member 30 is made of a specific material, and has self-lubricating property, such as polytetrafluoroethylene, graphite fluoride, molybdenum disulfide, graphite, etc., and may be selected according to practical requirements. Because when the ball 23 is arranged, the magnetic sheet 22 and the magnet 21 are attracted to each other, and the circuit board two 3 is contacted with the ball 23 in an impact manner, so that the ball 23 can generate point impact on the circuit board two 3, the ball 23 can hit the circuit board two 3 out of a concave point pit in the continuous use process, and in the continuous use process, a movement dent can be formed between the ball 23 and the circuit board two 3, so that the displacement process of the circuit board two 3 gradually tends to move only along the movement dent, multi-directional displacement anti-shake cannot be well satisfied, and even if the gasket 25 is arranged, the situation that multi-directional displacement cannot be realized can be possibly occur. In order to avoid such a problem, in the above technical solution using the self-lubricating member 30, one end of the self-lubricating member 30 is connected to the cover plate 8, and the other end is configured to be planar, and contacts the second circuit board 3 in a planar manner, so as to reduce the impact pressure, protect the second circuit board 3, and ensure the planar displacement anti-shake of the first circuit board 2 and the second circuit board 3 on the basis of the self-lubricating feature.
Unlike the embodiments described above, as shown in fig. 10, in some embodiments the fixing member 1 is not configured as a damping member 31, and thus in these embodiments further includes a damping member 31, between the electric plate assembly and the fixing mechanism, one of which is fixedly connected to the damping member 31, and the other of which is connected to the damping member 31 through the damping gel 7. Specifically, a damping member 31 is disposed between the bottom plate 9 and the first circuit board 2, further, the damping member 31 is connected with the bottom plate 9, the first circuit board 2 is provided with a damping hole, that is, one of the bottom plate 9 and the first circuit board 2 is provided with the damping member 31, the other is provided with a damping hole for filling the damping gel 7, and the damping member 31 extends into the damping hole. When the motor is assembled, the damping piece 31 stretches into the damping hole, and then the damping hole is filled with damping glue 7, so that damping fit is met. Of course, in different technical solutions of this embodiment, the damping member 31 may also be disposed between the second circuit board 3 and the cover plate 8, or between the first circuit board 2and the cover plate 8, or between the second circuit board 3 and the bottom plate 9, and such an arrangement may be set according to the actual structure of the bottom plate 9 and the cover plate 8, and at the same time, for the corresponding arrangement, the avoiding hole 14 should also be reasonably arranged.
In this embodiment, the damping member 31 is provided on the base plate 9, however, in other embodiments, the damping member 31 may be provided on the first circuit board 2. In this embodiment, the fixing member 1 is not configured as the damping member 31, which has only the function of connecting the circuit board one 2 and the circuit board two 3, and the actual damping effect is achieved by the damping member 31. In this embodiment, the actual function of damping is the same as that of the above embodiment, and will not be described here again. Meanwhile, in the technical solution according to this embodiment, the fixing member 1 may be configured as the damping member 31 at the same time to realize damping vibration attenuation.
It should be noted that, in the prior art, an existing backing plate on the motor is usually utilized to bend a sheet structure, and the sheet structure is utilized to combine with the damping glue 7 to realize damping and vibration damping, however, the structure has obvious defects that the contact area between the damping glue 7 and the sheet structure is inconsistent in the plane direction, so that the damping effect is different when vibration damping is performed in different directions, and therefore, the anti-shake function and the expected difference of the motor are realized. Therefore, in the above embodiment, the radial cross section of the portion where the damping member 31 and the damping gel 7 are connected is circular, so that when the damping member 31 is wrapped by the damping gel 7, the damping contact areas of the damping member 31 in all directions are consistent, so that the damping effect is consistent regardless of the damping direction, and the requirement of the damping effect is better satisfied. In addition, for the embodiment of configuring the fixing piece 1 into the damping piece 31, the depth of the first end 15 inserted into the damping groove can be adjusted through the depth of the nut knob, and meanwhile, the adjustment can be performed through the mode of the supposition gasket 25, so that the adjustment of the damping effect can be well realized, the actual use requirement is met, and meanwhile, the gasket 25 can also realize protection on the nut connecting surface and avoid hard contact such as scratch. In still other embodiments, the contact area between the damping member 31 and the damping gel 7 is adjusted in an encrypted or widened manner by the thread pitch of the external cylindrical thread, so that the purpose of adjusting the damping effect can be achieved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (10)
1. An image sensor anti-shake motor, comprising:
the device comprises a motion mechanism and a fixing mechanism, wherein a driving mechanism and a suspension board are arranged between the motion mechanism and the fixing mechanism, the motion mechanism comprises an electric board assembly, the electric board assembly comprises a first circuit board and a second circuit board, the first circuit board is used for installing an image sensor, and the first circuit board and the second circuit board are respectively and independently externally connected with a first plugboard and a second plugboard;
the fixing piece is detachably connected to the first circuit board and the second circuit board;
wherein the fixing piece is connected with the fixing mechanism through damping glue; or the damping piece is also included, and one of the damping piece is fixedly connected with the damping piece, and the other damping piece is connected with the damping piece through damping glue.
2. The image sensor anti-shake motor of claim 1 wherein said securing mechanism comprises a cover plate and a base plate removably connected; the first circuit board is positioned on one side of the bottom plate far away from the cover plate; the circuit board is located between the cover plate and the bottom plate.
3. The image sensor anti-shake motor of claim 2, wherein the drive mechanism comprises:
the driving coil is arranged on the second circuit board;
the magnet is arranged on the cover plate;
The magnetic sheet is arranged on the second circuit board, and a magnetic attraction state is formed between the magnetic sheet and the magnet;
The plane guide member is arranged between the cover plate and the second circuit board;
wherein, the drive coil is electrified to cooperate with the magnet to drive the drive mechanism to displace relative to the fixed mechanism.
4. The image sensor anti-shake motor according to claim 3, wherein the planar guide member includes balls and ball grooves, the ball grooves being disposed on a cover plate or a second circuit board; or the plane guiding component comprises a self-lubricating piece, wherein the self-lubricating piece is fixedly arranged on one of the cover plate and the circuit board II, and the plane is contacted with the other one of the cover plate and the circuit board II.
5. The image sensor anti-shake motor of claim 4, further comprising:
The gasket comprises a body, a deformation part and a connecting part, wherein the connecting part is connected with the body through the deformation part, and the width of the deformation part is smaller than that of the connecting part;
The fixing piece penetrates through the connecting part and presses the gasket on the second circuit board through the nut;
The balls are in point contact with the pads.
6. The image sensor anti-shake motor according to claim 2, wherein the fixing member is configured as a damping member, and ends of the fixing member are connected to the cover plate through damping gel; the bottom plate is provided with an avoidance hole for avoiding the fixing piece; and/or one of the bottom plate and the circuit board is provided with a damping piece, the other one is provided with a damping hole for filling damping glue, and the damping piece extends into the damping hole.
7. An image sensor anti-shake motor according to claim 6 wherein the radial cross section of the portion where the damping member and the damping paste are connected is circular.
8. The image sensor anti-shake motor according to claim 1, wherein the second circuit board is provided with a gyroscope for anti-shake driving, and at least three hall sensors for anti-shake displacement control.
9. The anti-shake motor of claim 8, wherein the second circuit board is provided with three hall sensors, a plane perpendicular to the optical axis is an X-Y plane, two hall sensors are disposed on two sides of the second circuit board and located in the X-axis direction, and the other hall sensor is disposed in the Y-axis direction.
10. The image sensor anti-shake motor of claim 1 wherein said first board is disposed on the image sensor; the first circuit board is provided with a guide part for positioning the first guide plugboard.
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