CN111175927A - Base of prism driving device - Google Patents

Abstract

The invention discloses a base of a prism driving device, which comprises a bottom part and a rear part which are integrally formed, wherein the bottom part is provided with a bottom coil avoiding groove and a bottom carrier avoiding groove. The bottom coil keeps away the groove and cooperates with the bottom coil on prism drive arrangement's the circuit board, and the bottom carrier keeps away the groove and cooperates with the lower protruding portion of prism drive arrangement's carrier, and the both ends of bottom are still integrative upwards to stretch out base reed installation department, and the upper surface of this base reed installation department is parallel and be equipped with two archs with prism drive arrangement's reed complex with the bottom to and the inboard of base reed installation department is equipped with base damping glue groove. The base is convenient to manufacture and process, and the damping rubber groove is adopted, so that magnetic hysteresis generated during driving is optimized, the magnetic force generated by the magnet is strengthened, and the magnetic field is regulated.

Description

Base of prism driving device

Technical Field

The invention relates to the technical field of optical imaging equipment, in particular to a base of a prism driving device.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have a function of taking pictures or recording videos. The use of these electronic devices is becoming more common and the design direction of these electronic devices is being developed to be more convenient and thinner to provide more choices for users. Spring prism motor is more and more receiving consumer and complete machine manufacturer's favor as comparatively advanced device in the market, however, spring prism motor on the existing market is the unipolar rotation, relates to the part too much, and the mounting process is complicated, and the equipment is difficult the yields low, and the reliability is poor. In addition, the current prism project still adopts the electromagnetic technology to drive, because the prism is bulky, the quality is big, and the potential energy of reed in addition, the scheme of ordinary magnetite + coil is difficult to drive to because the power that makes out in the electromagnetism place at present and the potential energy of reed do not become a balanced proportion, can produce the magnetic hysteresis during the drive and lead to the prism drive unsmooth scheduling problem.

Disclosure of Invention

The present invention is directed to a base of a prism driving apparatus to solve the above-mentioned problems of the prior art.

In order to solve the above problems, according to an aspect of the present invention, there is provided a base of a prism driving device, the base including a bottom portion and a rear portion integrally formed, the bottom portion being provided with a bottom coil avoiding groove and a bottom carrier avoiding groove, the bottom coil avoiding groove cooperating with a bottom coil on a circuit board of the prism driving device, the bottom carrier avoiding groove cooperating with a lower protruding portion of a carrier of the prism driving device, both ends of the bottom portion further integrally protruding upward a base reed mounting portion, an upper surface of the base reed mounting portion being parallel to the bottom portion and being provided with two protrusions cooperating with a reed of the prism driving device, and an inner side of the base reed mounting portion being provided with a base damping rubber groove.

In one embodiment, the base spring mounting portion comprises a first section at the middle and second sections at both ends of the first section, the first section has a height higher than that of the second sections, and the protrusion is provided on the upper surface of each second section.

In one embodiment, the inner side wall of the first section protrudes inwards to form a protruding portion, the base damping rubber groove is arranged on the inner side wall of the second section, and the base damping rubber groove is located on the outer side of the inner surface of the protruding portion.

In one embodiment, the outer side surface of the reed installation part at one end of the base is provided with a positioning column, and the positioning column is matched with a positioning groove on a shell of the prism driving device so as to accurately install the shell on the base.

In one embodiment, the positioning column is arranged on the outer side surface of the first section.

In one embodiment, the middle part of the base spring mounting part is provided with a notch, and the middle part of the spring is positioned above the notch.

In one embodiment, a column is arranged in front of the reed mounting part at each end of the base, and the height of the column is matched with that of the rear part of the base.

In one embodiment, the rear portion of the base is provided with a carrier introduction slot.

In one embodiment, the base is further provided with bottom circuit board positioning columns, and the bottom circuit board positioning columns are matched with positioning holes in a circuit board of the prism driving device to fix the circuit board.

In one embodiment, four corners of the lower surface of the base form stepped portions protruding toward both ends of the base, respectively, to be fitted with the housing of the prism driving device. .

According to the base of the prism driving device, the base reed installation part is arranged to be parallel to the base, after the reeds are installed on the carrier and the base, the front ends and the rear ends of the reeds are located on the same horizontal plane, and the reeds are installed in a flat mode, so that the base is convenient to manufacture and process, the shell can cover most parts of the carrier, the base and the base are easy to close and install, and the overall reliability is higher. In addition, the damping glue is adopted, hysteresis generated during driving is optimized, the patch is added through the magnet group, the magnets generated by the magnets are strengthened, the magnetic field is regulated, the coil is arranged in a part similar to an embedded part, so that the coil is convenient to install and protect, the positioning column is arranged on the side face of the base, the automatic installation process is simplified, and the positioning effect of shell installation is achieved.

Drawings

Fig. 1 is an exploded perspective view of a prism driving apparatus according to an embodiment of the present invention.

Fig. 2 is a perspective view of a carrier of the prism drive apparatus of fig. 1.

Fig. 3 is a perspective view of a base of the prism drive apparatus of fig. 1.

Fig. 4 is a perspective view of a reed of the prism drive apparatus of fig. 1.

Fig. 5 is a perspective view of a circuit board of the prism driving apparatus of fig. 1.

Figure 6 is a top view of an assembly of the base, spring, carrier and circuit board assembled together.

Fig. 7 is a perspective view of the components of the entire prism drive apparatus assembled together.

Fig. 8 is a plan view of the prism drive apparatus of fig. 7.

3 fig. 3 9 3 is 3a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 prism 3 drive 3 apparatus 3 of 3 fig. 3 8 3 taken 3 along 3 line 3a 3- 3a 3. 3

Fig. 10 is a bottom view of the base portion with the circuit board removed.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

The invention generally discloses a prism driving device, which comprises a carrier, a base, a reed and a circuit board, wherein the carrier is used for carrying a prism and is rotatably connected with the base through the reed, the circuit board is arranged on the base and is provided with a bottom coil, the bottom of the carrier is provided with a bottom magnet corresponding to the bottom coil, the bottom coil is matched with the bottom magnet to drive the carrier to rotate relative to the base, and the reed is arranged in parallel to the bottom of the base. The reed of the prism driving device is arranged parallel to the bottom of the base, the reed is laid flat, manufacturing and processing are facilitated, and a shell capable of covering most of the whole body can be adopted, so that the shell and the base are easy to close and install, and the whole reliability is higher. Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a perspective view of a prism driving apparatus 100 according to an embodiment of the present invention. As shown in fig. 1, the prism drive apparatus 100 includes a prism 10, a pair of springs 20, a carrier 30, a base 40, a housing 50, a circuit board 60, and a magnet 80. The prism 10 is installed in the carrier 30, the carrier 30 is installed on the base 40, and a pair of springs 20 are respectively connected to left and right sides of the carrier 30, wherein one part of each spring 20 is connected to the carrier 30, and the other part is connected to the base 40, thereby movably connecting the carrier 30 with the base 40.

Fig. 2 is a perspective view of the carrier 30, and as shown in fig. 2, the carrier 30 includes a carrier body 31, the upper surface and the front surface of the body 31 are provided with grooves 32, and the bottom of the grooves 32 is formed with a slope 321, so that the cross-section of the grooves 32 is formed in a triangular shape as a whole to be engaged with the prism 10, so that the prism 20 and the carrier 30 are formed in a rectangular shape as a whole when the prism 20 is mounted in the grooves 32. The inclined surface 321 is further provided with a plurality of protrusions (not shown) with which the reflecting surface of the prism 10 is in contact when the prism 10 is mounted in the groove 32 of the carrier 30, so that the inclined surface 321 is spaced apart from the reflecting surface of the prism 10. The middle of the bevel 321 is also provided with an opening (not shown), which can reduce the weight of the carrier 30 without affecting the function of the carrier and save materials. As shown in fig. 6, the light enters from the upper surface of the prism 20, and exits the prism 20 from the front surface after being reflected by the rear surface of the prism 20.

Reed attaching portions 33 are provided on both sides of the body 31. The reed attaching portion 33 is integrally formed to protrude from both sides of the body 31. The reed fitting part is formed in a rectangular block shape as a whole and is parallel to the bottom of the base as a whole, so that the reed fitting part 33 is placed in a substantially horizontal manner when fitted to the base 40. Front and rear ends of the upper surface of the reed mounting part 33 are provided with a front projection 331 and a rear projection 332, which are fixedly connected to front and rear portions of the carrier connecting part of the reed 20, respectively. Referring to fig. 9, a bottom magnet mounting groove 343 is provided on the lower surface of the main body 31 of the carrier 30 to mount a bottom magnet. Referring to fig. 2 and 9, a rear portion of the main body 31 integrally protrudes rearward to form a rotation stopper 324 to define a rotation range of the carrier 30 on the base 40.

Two protrusions are formed on the side surface of the reed mounting part 33, and a carrier damping rubber groove 333 is formed on the upper surface of each protrusion to mount damping rubber. Accordingly, as shown in fig. 3, a base damping rubber groove 454 is also formed on the base 40 to mount a base damping rubber for optimizing hysteresis generated at the time of driving.

With continued reference to fig. 2, the groove 32 is formed at both sides thereof with a blocking plate 361 and a blocking plate 362, the blocking plate 361 and the blocking plate 362 enclose the groove 32 from the left and right sides, and when the prism 20 is disposed in the groove 32, both sides of the prism are completely blocked by the blocking plates 361 and 362, thereby protecting the prism 20. A relief groove (not shown) may be formed at the top of the blocking plate 361 and the blocking plate 362, respectively, to facilitate the insertion and removal of the prism 20 into and from the groove 32. A lower projection 37 is formed at the front of the bottom of the main body 31 to project downward to be fitted into a corresponding groove on the base 40.

Fig. 3 is a perspective view of the base 40. As shown in fig. 3, the base 40 includes a bottom portion 41 and a rear portion 42, a bottom coil avoiding groove 411 is provided in the middle of the bottom portion 41, and a bottom carrier avoiding groove 412 is provided in the front portion of the bottom portion 41. The bottom coil-avoiding slot 411 is for mating with a bottom coil on the circuit board 60 and the bottom carrier-avoiding slot 412 is for mating with the lower protrusion 37 of the carrier 30. The rear portion 42 of the base 40 is formed with a carrier introduction slot 44 to facilitate the insertion and removal of the carrier 30.

With continued reference to fig. 3, the base spring mounting portion 45 is integrally extended upward from both ends of the base 41, a notch 453 is formed in the middle of the base spring mounting portion 45, the upper surface of the base spring mounting portion 45 is parallel to the base 41 and is formed with a spring front end fixing projection 451 and a spring rear end fixing projection 452 in the front and rear, and the front and rear spring fixing projections 451 and 452 are located on substantially the same horizontal surface so as to be parallel to the bottom of the base 40 when the spring 20 is mounted on the base 40. A post 46 is also provided forward of the spring mounting portion 45 at each end of the base 40, the height of the post 46 corresponding to the height of the rear portion 42 of the base 40, thereby supporting the housing 50 together.

Specifically, the base reed mounting part 45 includes a first section in the middle and second sections at both ends of the first section, the height of the first section is lower than that of the second sections, and a protrusion 452 is provided on the upper surface of each of the second sections, and a notch 453 is formed above the first section. The inner side wall of the first section protrudes inwards to form a protruding portion 471, and the base damping rubber groove 454 is disposed on the inner side wall of the second section, and as can be seen clearly from the figure, the base damping rubber groove 454 is located outside the inner surface of the protruding portion 471, that is, the distance from the base damping rubber groove 454 to the center of the base 40 is farther than the distance from the inner surface of the protruding portion 471 to the center of the base 40. Four corners of the lower surface of the base 40 form stepped portions 461 projecting toward both ends of the base, respectively, to be fitted with the bottom of the housing 50.

In summary, the bottom coil avoiding groove is formed in the bottom of the base 40 of the present invention, and is used for placing the bottom coil of the circuit portion. In addition, the bottom carrier avoiding groove has a certain effect of limiting the motion range of the carrier, and the carrier introducing groove is convenient for the carrier to be installed and also has a certain effect of limiting the motion range.

Figure 4 is a perspective view of one of the reeds 20 of one embodiment of the present invention. The shape and configuration of the other spring plate 20 is similar to the spring plate 20 of figure 4 and will not be described in detail herein. As shown in figure 4, the spring plate 20 is integrally formed of a first portion 21 and a second portion 22 connected to each other, the first portion 21 being secured to the carrier 30 and the second portion 22 being secured to the base 40. Specifically, the rear end of the first portion 21 is provided with a rear carrier connection portion 211, the front end of the first portion 21 is provided with a front carrier connection portion 212, and the rear carrier connection portion 211 and the front carrier connection portion 212 are connected through a bent first elastic strip 213. Specifically, the middle of the bent first elastic strip 213 forms a lower case letter "m" bend, and forms a lower case letter "n" bend at both ends, and the "n" bends at both ends are opposite to the middle "m" bend. So set up, the reed is equipped with the center pin, can provide bigger deformation.

With continued reference to fig. 4, the second portion 22 is identical in shape and construction to and is oppositely disposed from the first portion, the second portion 22 being adapted for attachment to the base 40. Specifically, the rear end of the second portion 22 is provided with a rear base connecting portion 221, the front end of the second portion 22 is provided with a front base connecting portion 222, and the rear base connecting portion 221 and the front base connecting portion 222 are connected by a bent second elastic strip 223. Similar to the first portion, the middle portion of the second elastic strip 223 of the second portion 22 forms an m-shaped bent portion bent in a shape of a lower case letter "m", both ends of the second elastic strip 223 form n-shaped bent portions bent in a shape of a lower case letter "n", and the n-shaped bent portions at both ends are opposite to the m-shaped bent portion at the middle.

With continued reference to figure 4, the m-fold of the first portion 21 and the m-fold of the second portion 22 of the leaf 20 are oppositely disposed and connected in between by a connecting portion 23, i.e., the m-fold of the first portion 21 and a portion of the m-fold of the second portion 22 are the connecting portion 23, and the connecting portion 23 constitutes a portion of the m-fold of the first portion 21 and a portion of the m-fold of the second portion 22, respectively. When the carrier 30 moves relative to the base 40 driven by the coil 62 of the circuit board 60 in cooperation with the magnet 80, the carrier 30 rotates relative to the base 40 about the connecting portion 23.

Fig. 5 is a front view of the circuit board 60. As shown in fig. 5, the circuit board 60 is provided with six outgoing terminals as a whole, namely coil terminals 63A, 63B and sensor terminals X3, X4, X1 and X2. The coil 61 is mounted on the surface of the circuit board 60 facing the carrier 30, and the coil terminals 63A, 63B are connected to both ends of the coil 62, respectively, and when the coil terminals 63A and 63B are connected to the positive and negative electrodes of the power supply, respectively, the coil 62 is energized and generates a current. Referring to fig. 9, the bottom of the circuit board 60 is mounted with circuit board patches 64 to secure the circuit board and also to act as reinforcement coils for the magnetic field. The coil 62 is arranged in a plastic molding, and the magnet assembly is composed of magnets and metal patches and is mounted on the bottom of the carrier in an embedded manner. When the entire prism drive device 100 is assembled, the coil 62 is located below the magnet 80 and within the magnetic field formed by the magnet 80, and when the coil 62 is energized, the carrier 30 is driven to move by the magnetic force and further the prism 10 is driven to move.

With continued reference to fig. 5, a sensor 61 is also provided on the circuit board 60, the sensor 61 being disposed within the area enclosed by the coil 62. The four interfaces of the sensor 61 are connected to sensor terminals X1, X2, X3, and X4, respectively. When the position of the prism changes relative to the circuit board, the sensor 61 detects the position change of the magnet at the bottom of the carrier, and further detects the position change of the carrier 30, and communicates the change to the control unit, and under the control of the control unit, the current in the coil changes and applies a force in the opposite direction to the carrier 30, so as to pull the carrier 30 and further the prism 10 back to the original position, and thus the optical anti-shake function is realized.

Figure 6 is a top view of the assembly of the base 40, spring 20, carrier 30 and circuit board 60 assembled together. As shown in fig. 6, the prism 10 is mounted on the carrier 30, the carrier 30 is mounted on the base 40, and the spring plate 20 connects the carrier 30 and the base 40. Specifically, the first rear end fixing portion 211 of the first part 21 of the reed 20 is fixed to the rear end fixing portion 331 of the carrier 30, and the front end fixing portion 222 of the first part 21 of the reed 20 is fixed to the front end fixing portion 332 of the carrier 30. The rear end fixing part 221 of the second part 22 of the reed 20 is fixed to the reed rear end fixing projection 451 of the base 40, and the front end fixing part 222 of the second part 22 of the reed 20 is fixed to the reed front end fixing projection 452 of the base 40, so that the carrier 30 and the base 40 are rotatably connected by the reed 20.

3 fig. 37 3 is 3a 3 perspective 3 view 3 of 3 the 3 entire 3 prism 3 driving 3 apparatus 3 assembled 3 together 3, 3 fig. 3 8 3 is 3a 3 top 3 view 3 of 3 the 3 prism 3 driving 3 apparatus 3 of 3 fig. 37 3, 3 fig. 3 9 3 is 3a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 prism 3 driving 3 apparatus 3 of 3 fig. 3 8 3 taken 3 along 3 line 3a 3- 3a 3, 3 and 3 fig. 3 10 3 is 3a 3 bottom 3 view 3 of 3a 3 base 3 portion 3 with 3a 3 circuit 3 board 3 removed 3. 3 As shown in fig. 7-10, after the base 40, the spring plate 20, the carrier 30 and the circuit board 60 shown in fig. 6 are assembled, the housing 50 is mounted on the base 40 and the carrier is encapsulated, the prism 10 is located at the opening portion of the middle portion of the housing, and the positioning posts 47 on the base 40 are snapped into the positioning slots 51 of the housing 50, so that the housing is accurately and reliably mounted on the base 40, which facilitates the automated housing installation and also has a certain housing position positioning function. The wiring ports of the circuit board 60 are located below the positioning posts 47 to facilitate connection with the outside. Light enters the prism 10 from the upper surface of the prism 10 in the orientation shown in fig. 7 and exits from the front surface of the prism 10 in the orientation shown in fig. 7.

As can be seen in fig. 7 and 9, when the entire prism assembly is assembled, the light-entering surface (upper surface) of the prism 10 is located between the upper surface 52 of the housing 50 and the upper surface of the carrier 30.

Referring to fig. 9, the inclined surface 321 of the carrier 30 is engaged with the inclined surface of the prism 10 and supports the prism 10, the magnetic assembly 80 is installed in the bottom magnet installation groove 343 at the bottom of the carrier 30, and the metal patch 81 is disposed between the magnetic assembly 80 and the bottom magnet installation groove 343 to increase the magnetic field of the magnet and regulate the induction effect of the corresponding sensor. Wherein the magnetic assembly 80 may be comprised of one magnet or two magnets. The magnetic assembly 80 is aligned with the coil 62 and the sensor 61 on the base 40. The bottom of the circuit board 60 is fitted with circuit board patches 64 to hold the circuit board and also to act as reinforcement coils for the magnetic field.

Referring to fig. 10, the base 40 is provided with a bottom coil avoiding groove 411 and a bottom circuit board positioning column 413, the bottom coil avoiding groove 411 corresponds to the bottom coil and exposes the bottom magnet of the carrier for better driving the coil of the bottom circuit board, and the bottom circuit board positioning column 413 is matched with the positioning hole 65 on the circuit board 60 for fixing the circuit board and the circuit board patch.

In the present invention, as shown in fig. 6, the rear end and the front end of the spring plate 20 are located on the same horizontal plane, that is, the spring plate 20 is arranged parallel to the bottom of the base 40, and the two sides of the groove 31 of the carrier 30 form a complete baffle, thereby achieving better protection effect and stronger stability for the prism 10. Furthermore, since the springs are mounted upright at 90 degrees, the springs 20 can be laid flat by laying the entire prism drive on their sides, facilitating manufacturing and processing, and allowing the housing to cover a large portion of the carrier, and providing easy close mounting with the base and greater overall reliability. The invention ensures the reset by utilizing the two reeds, limits the movement range, reduces the number of parts and simplifies the process.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. The utility model provides a prism drive arrangement's base, a serial communication port, the base includes the bottom and the rear portion that form an organic whole, the bottom is equipped with the bottom coil and dodges the groove and the groove is dodged to the bottom carrier, the bottom coil dodge the groove with bottom coil cooperation on prism drive arrangement's the circuit board, the bottom carrier dodge the groove with the cooperation of the lower protruding portion of prism drive arrangement's carrier, the base reed installation department is upwards stretched out to the both ends of bottom still an organic whole, the upper surface of base reed installation department with the bottom is parallel and be equipped with two archs of prism drive arrangement's reed complex, and the inboard of base reed installation department is equipped with the base damping and glues the groove.

2. A base as claimed in claim 1, wherein the base spring mounting portion comprises a first section at the middle and second sections at the ends of the first section, the first section being at a higher elevation than the second sections, and the projection being provided on the upper surface of each second section.

3. The base of claim 2, wherein the inner side wall of the first section protrudes inward to form a protrusion, the base damping glue groove is disposed on the inner side wall of the second section, and the base damping glue groove is located outside the inner surface of the protrusion.

4. The base of claim 2, wherein the outer side of the spring mounting portion at one end of the base is provided with a positioning post, and the positioning post is matched with a positioning groove on the housing of the prism driving device to accurately mount the housing on the base.

5. The base of claim 4, wherein the positioning posts are disposed on an outer side of the first section.

6. A base as claimed in claim 1, wherein a notch is formed in the middle of the base spring mounting portion, the middle of the spring being located above the notch.

7. The base of claim 1, wherein a post is further provided forward of the reed mounting portion at each end of the base, the height of the post matching the height of the rear portion of the base.

8. The base of claim 1, wherein the rear portion of the base is provided with a carrier introduction slot.

9. The base of claim 1, further comprising bottom circuit board positioning posts, wherein the bottom circuit board positioning posts cooperate with positioning holes on the circuit board of the prism driving device to fix the circuit board.

10. The base of claim 1, wherein four corners of the lower surface of the base form steps protruding toward both ends of the base, respectively, to be engaged with the housing of the prism driving device.

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