TWI445287B - Spring and voice coil motor - Google Patents

Description

Shrapnel and voice coil motor

The present invention relates to optical image stabilization technology, and more particularly to a voice coil motor that can be applied to optical image stabilization and a spring piece applied to the voice coil motor.

The camera module controls the length of time that the light is projected onto the image sensor through the shutter. For example, when the shutter speed is 1/2 second, the image sensor is sensitive to 1/2 second, if within 1/2 second. Due to the movement of the same beam of light on the image sensor due to the jitter, the image sensor records the motion of the light, making the captured picture blurred. In order to compensate for the amount of light offset caused by jitter, camera modules using image stabilization systems to prevent jitter began to appear in the 1990s. For details, please refer to the paper "Optical image stabilization for digital cameras" by Cardani B. et al., April 2006, Control Systems Magazine, IEEE (Volume 26, Issue 2, Page(s): 21-22).

With the continuous development of digital camera technology, the camera body is often small and light, which is easy to cause hand shake, resulting in blurred images. The following three situations are prone to blurry images: First, long-focus shooting, because the long lens will enlarge the amplitude of the camera, and slight jitter will cause a large blur, so the impact of hand vibration on the sharpness of the picture is better than that of the wide-angle lens. obvious. Second, shooting in low light environment, in indoor, dusk and other weak light source environment, the camera will adjust the shutter speed to slower to increase the amount of light, so it is more prone to jitter. Third, macro shooting, subtle objects in the case of high magnification of the lens, slight vibration It will become quite obvious. These conditions can cause jitter and blur the image. Since the distance of the object being photographed is much larger than the displacement of the camera shake, the main cause of image blur caused by the hand shake is the deflection of the camera itself, rather than the displacement of the camera itself, especially in the case of long-distance shooting.

In view of the above, it is necessary to provide a voice coil motor capable of preventing image shift due to camera shake during shooting and a shrapnel that can be applied to the above-described voice coil motor.

A shrapnel and a voice coil motor will be described below with reference to specific embodiments.

A spring piece includes a first fixing portion, a second fixing portion, a third fixing portion, a first elastic portion connected between the first fixing portion and the second fixing portion, and a first fixing portion and a third fixing portion The second elastic portion between. The first fixing portion has a first side, a second side opposite to the first side, and a third side connected between the first side and the second side. The second fixing portion is adjacent to one end of the third side adjacent to the first side. The third fixing portion is adjacent to one end of the third side adjacent to the second side. The first elastic portion has a wave shape and extends from the first side away from the one end of the third side toward the first fixing portion. The second elastic portion is also undulating and extends from the second side away from one end of the third side toward the second fixing portion.

A voice coil motor includes a fixing member, a movable member, a rolling element, a first magnetic member and a second magnetic member, and the elastic piece. The fixing component has a first receiving space, and the movable component is received in the first receiving space. The second fixing portion and the third fixing portion of the elastic piece are fixed to the fixing element. The first fixing portion is fixed to the movable element. The rolling element is rollably coupled between the stationary element and the movable element. The first magnetic element is fixed to the fixing element, and the second magnetic element Fixed to the movable element and opposite to the first magnetic element, one of the first magnetic element and the second magnetic element being an electromagnet for generating a magnetic force of interaction such that the movable element is opposite to the rolling of the rolling element Rotate on the fixed component.

The elastic piece provided by the technical solution can provide an elastic restoring force when the first fixing portion is deflected in different directions with respect to the second fixing portion and the third fixing portion. Moreover, the two elastic portions of the elastic piece in the technical solution are symmetrically arranged with respect to the first fixing portion, so that the first fixing portion is balanced by the elastic force. The voice coil motor provided by the technical solution is provided with the above-mentioned elastic piece between the movable element and the fixed element, and the Lorentz force is generated between the corresponding two magnetic elements by controlling the direction of the current in the coil, and the movable element is wound. The rolling element is rotated, so that the voice coil motor provided by the technical solution can be applied to the anti-shake of the camera module.

100, 200, 330‧‧‧ shrapnel

110, 210, 331‧‧‧ first fixed part

111, 3311‧‧‧ first side

112, 3312‧‧‧ second side

113, 3313‧‧‧ third side

114, 3314‧‧‧ fourth side

115‧‧‧ openings

116‧‧‧through hole

120, 220, 332‧‧‧ first elastic part

121, 221‧‧‧ first extension

122, 222‧‧‧ second extension

130, 230, 333‧‧‧Second elastic parts

131‧‧‧ Third extension

132‧‧‧fourth extension

140, 334‧‧‧Second fixed department

141, 3341‧‧‧ first fixed piece

142, 3342‧‧‧second fixed piece

143‧‧‧First fixing hole

150, 335‧‧ Third fixed department

151, 3351‧‧‧ third fixed piece

152, 3352‧ ‧ fourth fixed piece

153‧‧‧Second fixing hole

300‧‧‧ voice coil motor

310‧‧‧Fixed components

311‧‧‧Fixed frame

3111‧‧‧First side wall

3112‧‧‧ second side wall

3113‧‧‧ third side wall

3114‧‧‧ fourth side wall

3115‧‧‧First containment space

3116‧‧‧First receiving hole

3117‧‧‧Second receiving hole

3118‧‧‧3rd receiving hole

3119‧‧‧ dent

312‧‧‧ fixed plate

3121‧‧‧Receiving Department

3122‧‧‧Fixed Department

3123‧‧‧ inner surface

3124‧‧‧First storage slot

320‧‧‧ movable components

321‧‧‧ Containment frame

3211‧‧‧First side panel

3212‧‧‧Second side panel

3213‧‧‧ Third side panel

3214‧‧‧4th side panel

3215‧‧‧ top board

3216‧‧‧Second containment space

322‧‧‧Connecting board

3221‧‧‧Connecting Department

3222‧‧‧Second holding trough

341‧‧‧First magnetic component

3411‧‧‧Part 1

3412‧‧‧Part II

342‧‧‧ Third magnetic component

3421‧‧‧Part III

3422‧‧‧Part IV

343‧‧‧ fifth magnetic element

351‧‧‧Second magnetic component

3511‧‧‧First permanent magnet

3512‧‧‧Second permanent magnet

352‧‧‧4th magnetic element

353‧‧‧ sixth magnetic element

3521‧‧‧ Third permanent magnet

3522‧‧‧4th permanent magnet

360‧‧‧ rolling elements

1 is a perspective view of a shrapnel provided by a first embodiment of the present technical solution.

FIG. 2 is a schematic plan view of a shrapnel provided by the first embodiment of the present technical solution.

FIG. 3 is a schematic plan view of a shrapnel provided by a second embodiment of the present technical solution.

4 is a perspective view of a voice coil motor according to a third embodiment of the present technical solution.

Figure 5 is a schematic cross-sectional view taken along line V-V of Figure 4.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 4.

Fig. 7 is a schematic view showing the voice coil motor movable member provided with the third embodiment deflected relative to the fixed member about the Y-axis.

Figure 8 is a schematic view showing the movement of the voice coil motor movable member relative to the fixed member about the X-axis provided by the third embodiment.

The shrapnel and voice coil motor of the present technical solution will be further described in detail below with reference to the accompanying drawings and the embodiments.

Referring to FIG. 1 and FIG. 2 , the first embodiment of the present invention provides a resilient piece 100 including an integrally formed first fixing portion 110 , a first elastic portion 120 , a second elastic portion 130 , and a second fixing portion 140 . And a third fixing portion 150.

The first fixing portion 110 is for fixed connection with a movable element of the voice coil motor. In this embodiment, the first fixing portion 110 is connected between the first elastic portion 120 and the second elastic portion 130. The first fixing portion 110 has a substantially rectangular shape, and has a first side 111 extending in the width direction, a second side 112 opposite to the first side 111, and a third side 113 extending in the longitudinal direction, and The third side 113 is opposite the fourth side 114. A semi-circular opening 115 is formed from the third side 113 toward the fourth side 114 to facilitate cooperation with the area through which the movable element requires light to pass. In the embodiment, two L-shaped through holes 116 symmetrical to each other are further disposed in the first fixing portion 110 to reduce the weight of the elastic piece 100 and save the material for manufacturing the elastic piece 100.

The first elastic portion 120 is connected between the first fixing portion 110 and the second fixing portion 140. The first elastic portion 120 extends in a width direction substantially parallel to the first fixing portion 110 and is adjacent to the first side 111. The length is substantially equal to the width of the first fixing portion 110, and the first elastic portion 120 is substantially wavy, and specifically may be a shape of a sine wave, a square wave, a triangular wave or the like. In this embodiment, the first elastic portion 120 is substantially square, and includes a plurality of first extending segments 121 and a plurality of second extending segments 122. The first extending portion 121 and the second extending portion 122 are alternately connected, that is, two adjacent ones. The first extension 121 is connected to only one second extension 122, and only one first extension 121 is connected between the two adjacent extensions 122. In this embodiment, the first elastic portion 120 is connected to the first of the first fixing portions 110. The side edge 111 is adjacent one end of the fourth side edge 114. The first extension 121 is substantially parallel to the longitudinal direction of the first fixing portion 110, and the second extension 122 is substantially parallel to the width direction of the first fixing portion 110. Specifically, the first elastic portion 120 includes 5 first extending portions 121 and 4 and second extending portions 122 . The first extending portions 121 at the two ends of the first elastic portion 120 and the first fixing portion 110 and the second fixing portion 140 respectively Connected, each of the second extensions 122 is smoothly connected to one end of the first extension 121 adjacent thereto such that the first elastic portion 120 is substantially square. That is, the first elastic portion 120 includes a first extension 121, a second extension 122, a first extension 121, a second extension 122, a first extension 121, a second extension 122, and a first extension. 121. The second extension 122 and the first extension 121. In this embodiment, the width of the first extension 121 is greater than the width of the second extension 122. Of course, the width of the first extension 121 may also be equal to or smaller than the width of the second extension 122. The length and number of the first extension 121 and the second extension 122 can be set according to the size of the elastic deformation actually needed and the elastic restoring force that the elastic piece needs to provide.

The second elastic portion 130 is connected between the first fixing portion 110 and the third fixing portion 150 . The shape of the second elastic portion 130 is the same as the shape of the first elastic portion 120. The first elastic portion 120 and the second elastic portion 130 are symmetrical with respect to a central axis of the first fixed portion 110. The second elastic portion 130 extends in a width direction substantially parallel to the first fixing portion 110 and is adjacent to the second side 112. The length thereof is substantially equal to the width of the first fixing portion 110, and the second elastic portion 130 has a substantially square waveform. The third extension section 131 and the fourth extension section 132 are alternately connected, that is, the adjacent two extension sections 131 are connected to only one fourth extension section 132. Only a third extension 131 is connected between the adjacent two fourth extensions 132. In this embodiment, the second elastic portion 130 is connected to the second side 112 of the first fixing portion 110 near one end of the fourth side 114. The third extension 131 is substantially parallel to the longitudinal direction of the first fixing portion 110, and the fourth extension The extending portion 132 is substantially parallel to the width direction of the first fixing portion 110. Specifically, the second elastic portion 130 includes a third extension portion 131 and a fourth extension portion 132. The third extension portion 131 at the two ends of the second elastic portion 130 is respectively connected to the first fixing portion 110 and the third fixing portion 150. Each of the fourth extensions 132 is smoothly connected between one end of the two third extensions 131 adjacent thereto, such that the second elastic portion 130 has a substantially square shape, that is, the second elastic portion 130 includes a third connection in sequence. The extension section 131, the fourth extension section 132, the third extension section 131, the fourth extension section 132, the third extension section 131, the fourth extension section 132, the third extension section 131, the fourth extension section 132 and the third extension section 131. In this embodiment, the width of the third extension 131 is greater than the width of the fourth extension 132. Of course, the width of the third extension 131 may also be equal to or smaller than the width of the fourth extension 132. The length and number of the third extension section 131 and the fourth extension section 132 can be set according to the size of the elastic deformation actually needed and the magnitude of the elastic restoring force that the elastic piece needs to provide.

The second fixing portion 140 and the third fixing portion 150 are for fixing to a fixing assembly of the voice coil motor. The second fixing portion 140 includes a first fixing piece 141 and a second fixing piece 142 which are connected to each other. The extending directions of the first fixing piece 141 and the second fixing piece 142 are perpendicular to each other, wherein the first fixing piece 141 and the third side piece 113 is adjacent to one end of the first side edge 111 and is connected to the first elastic portion 120. The first fixing piece 141 is located in the same plane as the first fixing portion 110. The second fixing piece 142 is connected to one end of the first fixing piece 141 away from the first elastic part 120, and the second fixing piece 142 is perpendicular to the plane of the first fixing piece 141. In this embodiment, a first fixing hole 143 is opened at a connection between the first fixing piece 141 and the first elastic portion 120 for fixing the second fixing portion 140 to the fixing element. The shape of the second fixing portion 140 may also include only the first fixing piece 141 . The first fixing hole 143 may also be opened in the first fixing piece 141 .

The third fixing portion 150 is identical in shape to the second fixing portion 140 and is symmetrical about a central axis of the first fixing portion 110. The third fixing portion 150 includes a third fixing piece 151 and a fourth fixing piece 152 which are connected to each other. The extending directions of the third fixing piece 151 and the fourth fixing piece 152 are perpendicular to each other, wherein the third fixing piece 151 and the third side piece 113 is adjacent to one end of the second side 112 and is connected to the second elastic portion 130. The third fixing piece 151 is located in the same plane as the first fixing portion 110. The fourth fixing piece 152 and the third fixing piece 151 are connected away from one end of the second elastic portion 130, and the fourth fixing piece 152 is perpendicular to the plane of the third fixing piece 151. In this embodiment, a second fixing hole 153 is opened at a connection between the third fixing piece 151 and the second elastic portion 130 for fixing the third fixing portion 150 to the fixing element. The shape of the third fixing portion 150 may also include only the third fixing piece 151 , and the second fixing hole 153 may also be opened in the third fixing piece 151 .

The second fixing portion 140 and the third fixing portion 150 in this embodiment may also be directly connected to each other.

Referring to FIG. 3, a structure of a shrapnel 200 according to a second embodiment of the present invention is similar to the structure of the shrapnel 100 provided by the first embodiment of the present technical solution. The difference is that the shapes of the first elastic portion 220 and the second elastic portion 230 are substantially triangular waveforms. Specifically, the first elastic portion 220 includes a plurality of first extensions 221 and a plurality of second extensions 222. The first extension 221 and the second extension 222 are alternately connected to each other. Only the second extension 222 is connected between the two adjacent extensions 221, and only one of the two adjacent extensions 222 is connected. An extension 221. The extending direction of the first extending portion 221 is different from the extending direction of the second extending portion 222 and is not parallel to the width direction of the first fixing portion 210. The shape of the second elastic portion 230 is the same as that of the first elastic portion 220, and is symmetrically disposed about the central axis of the first fixing portion 210.

Referring to FIG. 4 to FIG. 6 together, a third embodiment of the present technical solution provides a voice coil motor. 300, comprising a fixing element 310, a movable element 320, a spring piece 330 connected between the fixed element 310 and the movable element 320, a first magnetic element 341, a third magnetic element 342, a fifth magnetic element 343, and a second magnetic element 351 The fourth magnetic element 352, the sixth magnetic element 353, and the rolling element 360 rotatably coupled between the fixed element 310 and the movable element 320. The elastic piece 330 can be the elastic piece provided by the first embodiment or the second embodiment of the technical solution. The following uses the elastic piece provided by the first embodiment as an example for description.

The fixing component 310 includes a fixing frame 311 and a fixing plate 312.

The fixing frame 311 is a rectangular fixing frame, and includes a first sidewall 3111, a second sidewall 3112, a third sidewall 3113, and a fourth sidewall 3114. The first sidewall 3111, the second sidewall 3112, the third sidewall 3113, and the fourth sidewall 3114 are enclosed. A first receiving space 3115. The first sidewall 3111 is opposite to the second sidewall 3112 , and the third sidewall 3113 is opposite to the fourth sidewall 3114 . A first receiving hole 3116 is defined in the center of the second side wall 3112, and a second receiving hole 3117 is defined in the center of the third side wall 3113. The third receiving hole 3118 is defined in the center of the fourth side wall 3114. A recess 3119 is formed in the center of one end of the first side wall 3111 parallel to the central axis direction of the fixed frame 311 for fixing the fixing plate 312 to the fixing frame 311.

The fixing plate 312 is fixed to the fixing frame 311 for fixing the elastic piece 330 to the fixing frame 311 and for mating connection with the rolling element 360. The shape of the fixing plate 312 matches the shape of the fixing frame 310. The fixing plate 312 includes a receiving portion 3121 and a fixing portion 3122 that is connected to the receiving portion 3121 . The shape of the receiving portion 3121 matches the shape of the recess 3119. The receiving portion 3121 is received in the recess 3119. The fixing portion 3122 is fixed to the first side wall 3111, the third side wall 3113, and the fourth side wall 3114. A circular first receiving groove 3124 is defined in the inner surface 3123 of the fixing portion 3122 adjacent to the first receiving space 3115. Used to fit the rolling element 360.

The movable element 320 includes a receiving frame 321 and a connecting plate 322.

The receiving frame 321 is received in the first receiving space 3115 and includes a first side plate 3211, a second side plate 3212, a third side plate 3213, a fourth side plate 3214, and a top plate 3215. The first side plate 3211, the second side plate 3212, the third side plate 3213, the fourth side plate 3214, and the top plate 3215 enclose a rectangular parallelepiped second receiving space 3216. The second receiving space 3216 is for accommodating components that require the voice coil motor 300 to be driven, such as a lens or a lens module. The first side plate 3211 is adjacent to the first side wall 3111, the second side plate 3212 is adjacent to the second side wall 3112, the third side plate 3213 is adjacent to the third side wall 3113, and the fourth side plate 3214 is adjacent to the fourth side wall 3114.

The connecting plate 322 is fixed to the receiving frame 321 for cooperating with the fixing plate 312 to receive the rolling element 360. In this embodiment, the connecting plate 322 is fixed to the top plate 3215 of the receiving frame 321 and the first side plate 3211. The connecting plate 322 has a connecting portion 3221. The connecting portion 3221 is disposed between the receiving portion 3121 of the fixing plate 312 and the first side plate 3211. The connecting portion 3221 is not in contact with the receiving portion 3121. A second receiving groove 3222 is defined at a position corresponding to the first receiving groove 3124. The second receiving groove 3222 is also a hemispherical groove. Preferably, the second receiving groove 3222 is equal in size to the first receiving groove 3124.

The first receiving slot 3124 can be formed in the first side wall 3111. The second receiving slot 3222 is defined in the first side plate 3211. The first receiving slot 3124 is opposite to the second receiving slot 3222. The enclosed space can accommodate the rolling element 360. Just fine.

The first fixing portion 331 of the elastic piece 330 is fixed to the movable member 320 such that the central axis of the fixing member 310 is perpendicular to the first fixing portion 331 of the elastic piece 330. The plane on which the elastic piece 330 is defined is defined as an XY plane, and the width direction of the first fixing portion 331 is defined as an X-axis direction, The direction perpendicular to the X-axis direction is defined as the Y-axis direction, and the direction perpendicular to the XY plane is defined as the Z-axis direction. In this embodiment, the second fixing portion 334 is fixed to the first sidewall 3111. Specifically, the first fixing piece 3341 is fixed on the upper surface of the first side wall 3111 near one side of the third side wall 3113, and the second fixing piece 3342 is in contact with the outer surface of the first side wall 3111. The third fixing portion 335 is fixed to the first side wall 3111. Specifically, the third fixing piece 3351 is fixed on the upper surface of the first side wall 3111 near one side of the fourth side wall 3114, and the fourth fixing piece 3352 and the first side wall 3111 are The outer surfaces are in contact.

In the present embodiment, the first magnetic element 341, the third magnetic element 342, and the fifth magnetic element 343 are electromagnets. The first magnetic element 341 is fixed to the second side wall 3112, the third magnetic element 342 is fixed to the third side wall 3113, and the fifth magnetic element 343 is fixed to the fourth side wall 3114. The central axis of the first magnetic element 341 is perpendicular to the second side wall 3112, the central axis of the third magnetic element 342 is perpendicular to the third side wall 3113, and the central axis of the fifth magnetic element 343 is perpendicular to the fourth side wall 3114. In this embodiment, the first magnetic element 341 is received and fixed in the first receiving hole 3116, the third magnetic element 342 is received and fixed in the second receiving hole 3117, and the fifth magnetic element 343 is received and fixed in the third receiving hole. Within 3118.

The first magnetic element 341 is opposite the second magnetic element 351 and includes a first portion 3411 above its central axis and a second portion 3412 below its central axis. When a current is passed through the first magnetic element 341, the current flow of the first portion 3411 is opposite to the current flow to the second portion 3412.

The second magnetic element 351 is fixed to the second side plate 3212. When a current is passed through the first magnetic element 341, a magnetic force parallel to the Z-axis direction is generated between the second magnetic element 351 and the first magnetic element 341. The second magnetic element 351 includes a first permanent magnet 3511 opposite the first portion 3411 and a second permanent magnet 3512 opposite the second portion 3412. First A permanent magnet 3511 and a second permanent magnet 3512 are disposed adjacent to each other in a direction parallel to the Z-axis direction, and the magnetic lines of the first permanent magnet 3511 and the second permanent magnet 3512 are opposite in direction. In this embodiment, the S pole of the first permanent magnet 3511 is close to the second side plate 3212, and the N pole of the first permanent magnet 3511 is away from the second side plate 3212. The N pole of the second permanent magnet 3512 is adjacent to the second side plate 3212, and the S pole of the second permanent magnet 3512 is away from the second side plate 3212. Of course, in a case where the N pole of the first permanent magnet 3511 is close to the second side plate 3212, the S pole of the first permanent magnet 3511 may also be away from the second side plate 3212. The S pole of the second permanent magnet 3512 is adjacent to the second side plate 3212, and the N pole of the second permanent magnet 3512 is away from the second side plate 3212.

Therefore, when a current is passed through the first magnetic element 341, the currents in the first portion 3411 and the second portion 3412 are opposite in direction, and they are in the magnetic field generated by the first permanent magnet 3511 and the second permanent magnet 3512. The direction of the magnetic lines of force is also opposite, such that the direction of the Lorentz force of the first permanent magnet 3511 and the second permanent magnet 3512 parallel to the central axis of the fixed member 310 is the same.

The third magnetic element 342 is opposite the fourth magnetic element 352 and includes a third portion 3421 above its central axis and a fourth portion 3422 having a bit below its central axis. When a current is passed through the third magnetic element 342, the current of the third portion 3421 flows in the opposite direction to the current flow of the fourth portion 3422.

The fourth magnetic member 352 is fixed to the third side plate 3213. The fourth magnetic element 352 is used to receive a force parallel to the Z-axis direction when a current is passed through the third magnetic element 342. The fourth magnetic element 352 includes a third permanent magnet 3521 opposite the third portion 3421 and a fourth permanent magnet 3522 opposite the fourth portion 3422. The third permanent magnet 3521 and the fourth permanent magnet 3522 are disposed adjacent to each other in a direction parallel to the Z-axis direction, and the magnetic lines of the third permanent magnet 3521 and the fourth permanent magnet 3522 are opposite to each other. Thus, when a current is passed through the third magnetic element 342, the current flow of the third portion 3421 and the fourth portion 3422 On the contrary, the magnetic field lines of the magnetic field generated by the third permanent magnet 3521 and the fourth permanent magnet 3522 are opposite to each other, so that the third permanent magnet 3521 and the fourth permanent magnet 3522 are subjected to Lorent parallel to the central axis of the fixing member 310. The direction of force is the same.

Similarly, the sixth magnetic member 353 is fixed to the fourth side plate 3214 and corresponds to the fifth magnetic member 343. The sixth magnetic element 353 is for causing the sixth magnetic element 353 to receive a force parallel to the Z-axis direction when a current is passed through the fifth magnetic element 343. And, by controlling the direction of the current in the first magnetic element 341 and the fifth magnetic element 343, the second magnetic element 351 and the sixth magnetic element 353 are biased in the opposite direction, thereby causing the movable element 320 to rotate. Of course, the voice coil motor 300 may not include the sixth magnetic element 353 and the fifth magnetic element 343.

The rolling element 360 is cooperatively received between the fixing element 310 and the movable element 320 such that the movable element 320 is rotatable relative to the fixed element 310. In this embodiment, the rolling element 360 is a spherical ball that is received in the first receiving groove 3124 and the second receiving groove 3222, and is adjacent to the inner wall of the first receiving groove 3124 and the inner wall of the second receiving groove 3222. contact. When the second magnetic member 351 is subjected to a force parallel to the Z-axis direction, the movable member 320 can be rotated relative to the fixed member 310 by the rolling member 360 as a fulcrum about a line parallel to the Y-axis. When the fourth magnetic element 352 and the sixth magnetic element 353 are subjected to a force parallel to the Z-axis direction, and they are subjected to the opposite directions of the force, the movable element 320 can roll the element 360 as a fulcrum about the X-axis direction. The line rotates relative to the fixed element 310.

When the voice coil motor 300 is only used when the second magnetic element 351 is subjected to a force parallel to the Z-axis direction, the movable element 320 can be rotated around a straight line parallel to the Y-axis, and the rolling element 360 can also be set to be movable. A pivot between the element 320 and the fixed element 310 that is parallel to the Y-axis direction, and the pivot may be an element such as a roller. In this case, the voice coil The motor 300 does not need to provide the third magnetic element 342, the fourth magnetic element 352, the fifth magnetic element 343, and the sixth magnetic element 353.

Referring to FIG. 4 and FIG. 7 together, when the force between the first magnetic element 341 and the second magnetic element 351 causes the first fixing portion 331 to be deflected about the Y axis, the first fixing portion 331 occurs along the Z axis. The deflection is such that the first elastic portion 332 and the second elastic portion 333 connected to the first fixing portion 331 are elastically deformed in opposite directions, thereby generating an elastic restoring force in the opposite direction to the first fixing portion 331. When the first fixing portion 331 is stopped or reduced by the force, the first fixing portion 331 returns to the initial position by the first elastic portion 332 and the second elastic portion 333.

Referring to FIG. 8 , when the movable element 320 is deflected by the magnetic force between the third magnetic element 342 and the fourth magnetic element 352 relative to the fixed element 310 , the first fixing portion 331 is opposite to the second fixing portion 334 . The three fixing portions 335 are deflected. While the first fixing portion 331 is deflected, the first elastic portion 332 is deformed in the negative or positive direction of the Z-axis when the first side portion 3311 is connected, thereby applying elastic recovery of the Z-axis in the positive or negative direction to the first side 3311. force. The second elastic portion 333 connected to the fourth side 3314 is deformed in the positive or negative direction of the Z-axis, thereby applying a Z-axis negative or positive elastic restoring force to the second side 3312. Therefore, when the first fixing portion 331 is stopped or reduced by the force, the first fixing portion 331 returns to the initial position by the first elastic portion 332 and the second elastic portion 333.

The elastic piece provided by the technical solution can provide an elastic restoring force when the inner fixing portion is deflected in different directions with respect to the outer fixing portion. Moreover, the two elastic portions of the elastic piece in the technical solution are symmetrically arranged with respect to the first fixing portion, so that the first fixing portion is balanced by the elastic force. The voice coil motor provided by the technical solution is provided with the above-mentioned elastic piece between the movable element and the fixed element, and the electric power in the coil is controlled. The direction of the flow causes a Lorentz force to be generated between the corresponding two magnetic elements, and the movable element rotates around the rolling element, so that the voice coil motor provided by the technical solution can be applied to the anti-shake of the camera module.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧Shrap

110‧‧‧First fixed department

111‧‧‧First side

112‧‧‧Second side

113‧‧‧ third side

114‧‧‧ fourth side

115‧‧‧ openings

116‧‧‧through hole

120‧‧‧First elastic part

130‧‧‧Second elastic department

140‧‧‧Second fixed department

141‧‧‧First fixed piece

142‧‧‧Second fix

143‧‧‧First fixing hole

150‧‧‧The third fixed department

151‧‧‧ third fixed piece

152‧‧‧4th fixed piece

153‧‧‧Second fixing hole

Claims (11)

A spring piece includes a first fixing portion, a second fixing portion, a third fixing portion, a first elastic portion connected between the first fixing portion and the second fixing portion, and a first fixing portion and a third fixing portion a second elastic portion, the first fixing portion having a first side, a second side opposite to the first side, and a third side connected between the first side and the second side The second fixing portion and the third side are adjacent to one end of the first side, and the third fixing portion is adjacent to one end of the third side near the second side, and the first elastic portion is a wave shape, and extending from the first side away from the one end of the third side toward the first fixing portion, the second elastic portion is also wave-shaped, and from the second side away from the third side to the second side The fixing portion extends. The shrapnel of claim 1, wherein the first elastic portion extends substantially parallel to the first side, and the second elastic portion extends substantially parallel to the second side. The elastic sheet of claim 1, wherein the first elastic portion and the second elastic portion are symmetrically disposed with respect to a center of the first fixing portion, and the second fixing portion and the third fixing portion are fixed with respect to the first fixing portion. The center of the department is symmetrically set. The elastic sheet of claim 1, wherein the second fixing portion includes a first fixing piece and a second fixing piece connected to each other, and the first fixing piece is connected to the first elastic portion, The second fixing piece is perpendicular to the first fixing piece, and the third fixing part includes a third fixing piece and a fourth fixing piece connected to each other, and the third fixing piece is connected with the second elastic part, the fourth fixing piece Vertical to the third fixed piece. The elastic sheet of claim 4, wherein the first fixing portion, the first elastic portion, the second elastic portion, the first fixing piece and the third fixing piece are located on the same plane. The shrapnel of claim 1, wherein the first elastic portion is a sinusoidal waveform, a square waveform or a triangular waveform, and the second elastic portion is a sinusoidal waveform, a square waveform or a triangular waveform. The shrapnel of claim 1, wherein the first elastic portion is a square wave shape, and includes a plurality of first extension segments and a plurality of second extension segments, and only two adjacent first extension segments are connected There is a second extension section, and only one first extension section is connected between the two adjacent extension sections. The extension direction of the first extension section is parallel to the first side edge, and the extension direction of the second extension section is vertical. On the first side, the second elastic portion is also a square wave shape, and includes a plurality of third extension segments and a plurality of fourth extension segments, and only a fourth extension segment is connected between the adjacent two third extension segments. Only a third extension is connected between the two adjacent fourth extensions, and the extension direction of the third extension is parallel to the second side, and the extension direction of the second extension is perpendicular to the second side. The elastic sheet of claim 1, wherein the first elastic portion and the second elastic portion each have a triangular waveform, and the first elastic portion includes a plurality of first extending segments and a plurality of second extending segments, Only a second extension is connected between the two adjacent first extensions, and only one first extension is connected between the two adjacent extensions, and the extension direction of the first extension is opposite to the first side The angle formed by the second extension portion is an acute angle, a right angle or an obtuse angle, and the second elastic portion includes a plurality of third extension segments and a plurality of angles. a fourth extension section, only a fourth extension section is connected between the two adjacent third extension sections, and only a third extension section is connected between the adjacent two extension sections, and the extension direction of the third extension section is The angle formed by the second side is an acute angle, a right angle or an obtuse angle, and the extending direction of the fourth extension section is also an acute angle, a right angle or an obtuse angle. A voice coil motor comprising a fixing member, a movable member, a rolling element, a first magnetic member, a second magnetic member, and a spring piece according to any one of claims 1 to 8, the fixing member having a first housing a space, the movable component is received in the first receiving space, the second fixing portion and the third fixing portion of the elastic piece are fixed to the fixing component, and the first fixing component is fixed to the movable component, and the rolling component can be Rollingly coupled between the fixed component and the movable component, the first magnetic component is fixed to the fixing component, and the second magnetic component is fixed to a moving element opposite to the first magnetic element, one of the first magnetic element and the second magnetic element being an electromagnet for generating a magnetic force of interaction such that the movable element is rolled relative to the fixed element by the rolling element Turn. The voice coil motor of claim 9, wherein the central axis of the fixing member is perpendicular to the first fixing portion of the elastic piece. The voice coil motor of claim 9, wherein the fixing element comprises a first side wall, a second side wall and a third side wall, and the first side wall is opposite to the second side wall, the third side wall Connected between the first side wall and the second side wall and perpendicular to the first side wall, the movable element includes a first side plate, a second side plate and a third side plate, the first side plate adjacent to the first side wall, the first The second side wall is adjacent to the second side plate, the third side wall is adjacent to the third side plate, the rolling element is disposed between the first side plate and the first side wall, and the first magnetic element is fixed to the second side wall. The second magnetic component is fixed to the second side plate, the voice coil motor further includes a third magnetic component and a fourth magnetic component, and one of the third magnetic component and the fourth magnetic component is an electromagnet, The third magnetic element is fixed to the third side wall, the fourth magnetic element is fixed to the third side plate, and the first magnetic element and the second magnetic element are used to generate an interaction magnetic force to rotate the movable element relative to the fixed element Vertical to the third side Rotating in the direction of the wall, the third magnetic element and the fourth magnetic element are used to generate an interactive magnetic force to rotate the movable element relative to the fixed element about a direction perpendicular to the first side wall.