CN114584696A

CN114584696A - Single-shaft motor

Info

Publication number: CN114584696A
Application number: CN202210318596.4A
Authority: CN
Inventors: 夏念明; 陈洪; 刘述伦
Original assignee: Guangdong Haideya Technology Co ltd
Current assignee: Guangdong Haideya Technology Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-06-03

Abstract

The invention discloses a single-shaft motor, which comprises a mounting seat, a carrier and at least one driving component, wherein the mounting seat is provided with a plurality of mounting holes; the carrier comprises a second mounting plate, a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft are convexly arranged at two ends of the second mounting plate; each drive assembly all includes actuating arm and memory alloy line, the one end of actuating arm is installed in first mounting panel, the other end of actuating arm is connected in the one end of memory alloy line, when the memory alloy line is heated the shrink, can make the actuating arm produce elastic deformation and then act on the second mounting panel, thereby the drive carrier is around first, the second pivot is rotated, the pivot can reduce the beat or rock of rotation in-process, make the carrier stable rotation, be favorable to improving the regulation precision, and this carrier has great rotation angle, thereby make this single-axis motor can be used to realize the scanning function or realize anti-shake compensation function, application scope is wider.

Description

Single-shaft motor

Technical Field

The invention relates to the technical field of optical imaging, in particular to a single-shaft motor with large adjusting angle and small adjusting power consumption.

Background

Nowadays, users have higher shooting requirements for electronic devices (e.g., mobile phones, tablet computers, etc.), and therefore, camera modules configured on the electronic devices are also more diversified, such as panoramic shooting, wide-angle shooting, telephoto shooting, and the like.

At present, a panoramic picture is shot by a user holding an electronic device to rotate horizontally or vertically, an image is recorded by a camera and synthesized by software, and the panoramic picture is obtained.

Another periscopic camera module positioned at a large focal length and used for long-distance shooting is designed through a special light path, so that the focusing direction is changed from the thickness direction of the electronic equipment to the width direction or the length direction of the electronic equipment, the electronic equipment can select a lens with a larger focal length on the premise of not increasing the thickness, and the long-distance shooting performance and effect are better. Because the periscopic camera module folds the Optical path, the requirement of Optical anti-shake (OIS: Optical image stabilization) is higher, and the current common mode is to drive the prism assembly to rotate through an electromagnetic driving device or an electrostrictive driving device to realize Optical anti-shake, but the current common mode has the defects of small anti-shake angle and poor anti-shake effect, and in addition, the electromagnetic driving device also causes the camera module to have larger volume and higher power consumption during adjustment.

Therefore, there is a need to provide a single-shaft motor with a larger adjustment angle, less adjustment power consumption, and a wider application range to solve the above problems.

Disclosure of Invention

The invention aims to provide a single-shaft motor which is larger in adjusting angle, small in adjusting power consumption and wider in application range.

In order to achieve the purpose, the technical scheme of the invention is as follows: the single-shaft motor is suitable for a camera module and comprises a mounting seat, a carrier and at least one driving component; the mounting seat comprises a first side wall, a second side wall and a first mounting plate, wherein the first side wall and the second side wall are arranged at intervals; the carrier comprises a second mounting plate, a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft are convexly arranged at two ends of the second mounting plate and are positioned on a straight line; each driving assembly comprises a driving arm and a memory alloy wire, one end of the driving arm is mounted on the first mounting plate, the other end of the driving arm is connected to one end of the memory alloy wire, and when the memory alloy wire is heated and contracted, the driving arm can generate elastic deformation to act on the second mounting plate, so that the carrier is driven to rotate around the first rotating shaft and the second rotating shaft.

Preferably, the even number groups of driving components are arranged on two sides of the axis where the first rotating shaft and the second rotating shaft are located, the carrier is driven to rotate in opposite directions by the even number groups of driving components, the driving components directly act on the second mounting plate, so that the stress point of the carrier is close to the rotating shaft of the carrier, and the rotating angle of the carrier is increased.

Preferably, the actuating arm includes fixed part, deformation portion and the drive division that sets gradually, the fixed part is fixed in first mounting panel, deformation portion can produce elastic deformation, the drive division connect in memory alloy line, work as memory alloy line application of force in can make when the drive division deformation portion produces, thereby make the drive division produces the displacement and acts on the second mounting panel.

Preferably, the thickness of the deformation part is smaller than that of the driving part, or/and the deformation part is provided with a through hole, and the deformation of the deformation part is at least larger than that of the driving part through the thickness or/and the through hole, so that a flexible hinge is formed between the fixing part and the driving part through the deformation part, the sensitivity of deformation generated when the driving arm is stressed is increased, and the sensitivity of rotation adjustment of the carrier is further increased.

Preferably, each of the driving assemblies further includes a pushing block, the pushing block is connected to the driving portion and detachably abutted to the second mounting plate, and the pushing block plays a role in resisting friction and reducing a friction coefficient in a process of contacting with the second mounting plate.

Preferably, the single-shaft motor further comprises a friction plate, the friction plate is fixed on the second mounting plate and detachably abutted to the driving part, and the friction plate plays roles in insulation and wear resistance.

Preferably, the single-shaft motor further comprises at least one elastic member, the elastic member is respectively connected to the mounting base and the carrier, the elastic member can deform when the carrier rotates, and the elastic member drives the carrier to reset when restoring deformation.

Preferably, the elastic element includes a first connecting portion, a second connecting portion and at least one elastic arm connected therebetween, the first connecting portion and the second connecting portion are disposed at an interval, one of the first connecting portion and the second connecting portion is connected to the first side wall or the second side wall, the other of the first connecting portion and the second connecting portion is connected to the second mounting plate, and the carrier drives the elastic arm to deform when rotating.

Preferably, a first baffle plate and a second baffle plate which are spaced from each other are further convexly arranged on the side surface of the second mounting plate, which is far away from the driving assembly, and a containing groove is formed between the first baffle plate and the second baffle plate.

Preferably, the single-shaft motor further includes an outer housing and an electrical connector, the outer housing is covered outside the mounting seat and has an opening for exposing the accommodating groove outside, the electrical connector is electrically connected to the driving arm, and one end of the electrical connector protrudes out of the outer housing.

Compared with the prior art, the single-shaft motor has the following technical effects: the two ends of a second mounting plate of the carrier are convexly provided with a first rotating shaft and a second rotating shaft which are positioned on a straight line, and the carrier is pivoted to a first side wall and a second side wall of the mounting seat through the first rotating shaft and the second rotating shaft, so that the assembly precision between the carrier and the mounting seat can be improved in the production process, the error between single-shaft motors in batch production is reduced, and the yield of the single-shaft motors in batch production is improved; the carrier rotates around the first rotating shaft and the second rotating shaft to be adjusted, and the rotating shaft can reduce jumping or shaking in the rotating process, so that the carrier rotates more stably, and the adjusting precision is improved; thirdly, a memory alloy wire is adopted for driving, and compared with the existing electromagnetic driving mode, the driving assembly has the advantages that the structure is simplified, and the power consumption during adjustment is reduced; fourthly, when the memory alloy wire is heated and contracted, the driving arm directly acts on the second mounting plate to push the carrier to rotate, the stress point of the second mounting plate is close to the rotating shaft of the second mounting plate, and the rotating angle of the carrier is increased, therefore, the single-shaft motor can be used in a common camera module to realize a scanning function, namely, the field range of a prism or a plane mirror on the carrier is enlarged, and the viewing angle is enlarged, the full field range of the prism or the plane mirror is scanned, and the image synthesis technology is matched to realize the effect of a panoramic photo and achieve the purpose of utilizing a small image sensor to shoot a large field of view, and the single-shaft motor can also be used in a periscopic camera module to perform anti-shake compensation and enlarge the anti-shake angle, so that the camera module has a better anti-shake effect; therefore, the single-shaft motor has wider application range; and the first mounting plate, the driving assembly and the second mounting plate are mounted in a stacked mode, so that the single-shaft motor is more convenient to assemble, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic view of the structure of a single-shaft motor of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 from another angle.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is a further exploded view of fig. 3.

Fig. 5 is a schematic view of the mount of fig. 4 at another angle.

Fig. 6 is a schematic view of the structure of fig. 5 from another angle.

Fig. 7 is a schematic view of the carrier of fig. 4 at another angle.

Fig. 8 is a schematic view of the structure of fig. 7 from another angle.

FIG. 9 is a schematic view of the drive assembly of FIG. 4 at another angle with respect to the electrical connection.

Fig. 10 is an exploded view of fig. 9.

Fig. 11 is a front view of the second drive assembly of fig. 9.

Fig. 12 is a schematic view of the second driving assembly of fig. 9 at another angle.

Figure 13 is an exploded view of one of the drive arms of figure 12.

Fig. 14 is a schematic view of an alternative angle of an elastic member shown in fig. 4.

Fig. 15 is a schematic view of the structure of the carrier and the driving assembly of the present invention.

Fig. 16 is a schematic view of the structure of the mounting seat and the driving assembly of the present invention.

Fig. 17 is a cross-sectional view of fig. 1 with the outer housing removed.

Fig. 18 is a schematic view of the principle of driving the prism rotation adjustment by the single-shaft motor of the present invention.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements. It should be noted that the orientation descriptions of the present invention, such as the directions or positional relationships indicated above, below, left, right, front, rear, etc., are all based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the technical solutions of the present application or simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present application. The description of first, second, etc. merely serves to distinguish technical features and should not be interpreted as indicating or implying a relative importance or implying a number of indicated technical features or implying a precedence relationship between indicated technical features.

As shown in fig. 1 to 17, the single-shaft motor 100 of the present invention is mainly used for mounting a prism, a plane mirror, or other components to adjust an angle of the prism, the plane mirror, or other components with respect to the image sensor 300, and has a relatively large adjustment angle, so that the single-shaft motor can be used in a general camera module to implement a scanning function, specifically, to expand a field range of the prism or the plane mirror, and further increase a viewing angle, and can implement an effect of a panoramic photograph by using an image synthesis technique, so as to achieve a purpose of capturing a large field of view using a small image sensor, and can also be used in a periscopic camera module to increase an anti-shake angle, thereby enabling the periscopic camera module to have a better anti-shake effect.

With continued reference to fig. 1-17, the present invention provides a single-shaft motor 100 that includes a mount 110, a carrier 120, and at least one drive assembly 130. The mounting base 110 includes a first sidewall 111, a second sidewall 112 and a first mounting plate 113 connected therebetween. The carrier 120 includes a second mounting plate 121, and a first rotating shaft 122a and a second rotating shaft 122b located on a straight line are protruded from two ends of the second mounting plate 121, the first rotating shaft 122a and the second rotating shaft 122b are respectively pivoted to the first side wall 111 and the second side wall 112, a gap is formed between the second mounting plate 121 and the first mounting plate 113, and a side surface of the second mounting plate 121 away from the first mounting plate 113 is used for mounting a prism, a plane mirror or other components. Each set of driving assembly 130 includes at least one Shape Memory Alloy (SMA) wire 131 and at least one driving arm 132, one end of the driving arm 132 is mounted on the first mounting plate 113, and the other end of the driving arm 132 is connected to one end of the SMA wire 131, so that when the SMA wire 131 is heated and contracted, the driving arm 132 is elastically deformed and acts on the second mounting plate 121, thereby driving the carrier 120 to rotate around the first rotating shaft 122a and the second rotating shaft 122b, and the carrier 120 drives the prism or the plane mirror thereon to rotate, thereby adjusting the angle of the prism or the plane mirror relative to the image sensor, thereby expanding the field range or achieving optical anti-shake.

In the invention, the SMA wire is adopted to drive the carrier 120 to rotate, compared with the existing electromagnetic driving mode, the invention can enable the carrier 120 to have a larger rotation angle, further expand the field range of the prism or the plane mirror, enable the imaging effect to be better, enable the power consumption to be smaller, enable the volume of the single-shaft motor 100 to be smaller, and be beneficial to miniaturization production.

Furthermore, the single-shaft motor 100 further includes at least one elastic element 140, the elastic element 140 is respectively connected to the mounting base 110 and the carrier 120, the elastic element 140 can deform when the carrier 120 rotates, and the elastic element 140 drives the carrier 120 to reset when the elastic element 140 recovers to deform.

Referring to fig. 1 to 17, in an embodiment of the present invention, the single-shaft motor 100 includes a set of driving components 130 and at least one elastic member 140, and the carrier 120 is driven by the driving components 130 to rotate to achieve adjustment, and the elastic member 140 is used to drive the carrier 120 to reset.

As shown in fig. 1 to 17, in another embodiment of the present invention, the single-shaft motor 100 includes even-numbered driving assemblies 130, the even-numbered driving assemblies 130 are respectively located at two sides of the axis of the first rotating shaft 122a and the second rotating shaft 122b, specifically, each driving assembly 130 is symmetrically arranged along the axis of the first rotating shaft 122a and the second rotating shaft 122b, the carrier 120 is driven by the even-numbered driving assemblies 130 to rotate in opposite directions, so that the carrier 120 can be rotated and adjusted in two directions, and the carrier 120 is driven by the driving assemblies 130 to be reset, in which no reset element is additionally provided.

In a specific implementation manner, the single-shaft motor 100 is provided with two sets of driving assemblies 130, and the two sets of driving assemblies 130 drive the carrier 120 to rotate in opposite directions, so as to realize the rotation adjustment of the carrier 120.

More preferably, the single-shaft motor 100 in this embodiment may further include at least one elastic member 140, and when any one of the driving assemblies 130 drives the carrier 120 to rotate, the elastic member 140 may be deformed, in this way, the elastic member 140 is utilized to enhance the reset function of the carrier 120, so as to shorten the reset time of the carrier 120 and increase the response speed of the single-shaft motor 100.

An embodiment of the single-shaft motor 100 of the present invention will be described with reference to fig. 1 to 17 again. In the present embodiment, the single-shaft motor 100 includes two sets of driving components 130 and two elastic members 140. For convenience of description, the two driving assemblies 130 are respectively expressed as a first driving assembly 130a and a second driving assembly 130b, and the first driving assembly 130a and the second driving assembly 130b are disposed at an interval, specifically, disposed at two sides of the axis where the first rotating shaft 122a and the second rotating shaft 122b are located. Two elastic members 140 are symmetrically connected to two ends of the front surface of the second mounting plate 121, in this embodiment, two elastic members 140 are disposed along the axis where the first rotating shaft 122a and the second rotating shaft 122b are located, that is, two elastic members 140 are connected to two ends of the second mounting plate 121 in the X-axis direction, as shown in fig. 3, and each elastic member 140 is further connected to the mounting base 110. When the first driving assembly 130a or/and the second driving assembly 130b drive the carrier 120 to rotate, the two elastic members 140 can be deformed at the same time, and the two elastic members 140 can balance the stress of the carrier 120, so that the stability of the carrier 120 during rotation is improved, the adjustment precision is improved, the restoring force of the carrier 120 is increased, and the response speed of the single-shaft motor 100 is improved.

It is understood that the number and the positions of the driving assemblies 130 and the elastic members 140 are not limited in this embodiment, and it is needless to say that more driving assemblies 130 may be provided to drive the carriers 120 respectively, only one or more elastic members 140 may be provided, and the elastic members 140 may be mounted at other positions of the second mounting plate 121.

Referring to fig. 1 to 4, in the present embodiment, the single-shaft motor 100 further includes an electrical connector 160 and an outer housing 170, the outer housing 170 is covered outside the mounting seat 110, one end of the electrical connector 160 is electrically connected to the driving arm 132 of the driving assembly 130, and the other end of the electrical connector extends out of the outer housing 170 for electrically connecting to a power supply component, which will be described in detail later.

The structure of each part of the single-shaft motor 100 in the foregoing embodiment will be described in detail with reference to fig. 1 to 17.

As shown in fig. 3-4, 7-8, and 15-17, the first connecting plate 123a and the second connecting plate 123b are protruded from the back of the second mounting plate 121 of the carrier 120, the first connecting plate 123a and the second connecting plate 123b are disposed at two ends of the second mounting plate 121 in the X-axis direction and protrude rearward, the first rotating shaft 122a and the second rotating shaft 122b are protruded from the sidewalls of the first connecting plate 123a and the second connecting plate 123b, respectively, and the first rotating shaft 122a and the second rotating shaft 122b are located on the same straight line to form a rotating shaft, as shown in fig. 7-8. As shown in fig. 15, after the first driving assembly 130a and the second driving assembly 130 are mounted in cooperation with the carrier 120, the first driving assembly 130a and the second driving assembly 130 directly apply force to the back surface of the second mounting plate 121, so that the force point of the carrier 120 is close to the rotation axis thereof, and the rotation angle of the carrier 120 is increased, and compared with a method in which the carrier swings (i.e., the carrier rotates around a virtual axis) through deformation of an elastic component in the prior art to realize adjustment, the carrier 120 of the present invention rotates around the first rotation axis 122a and the second rotation axis 122b to perform adjustment, and the first rotation axis 122a and the second rotation axis 122b can reduce the bounce or shake in the rotation process, so that the carrier 120 rotates stably, and the adjustment accuracy is improved.

More specifically, the first rotating shaft 122a and the second rotating shaft 122b may be integrally formed with the second mounting plate 121 or separately formed and then fixedly connected. In a preferred mode, the first and

second shafts

122a and 122b are formed separately from the second mounting plate 121 to facilitate mounting with the mounting base 110.

As shown in fig. 3 to 4, 7 to 8, 15 and 17, the second mounting plate 121 is protruded with a first baffle 124a and a second baffle 124b spaced apart from each other on the front surface thereof, the first baffle 124a and the second baffle 124b are spaced apart from each other along the X-axis direction, and a distance is provided between each of the first baffle 124a and the second baffle 124b and the end of the second mounting plate 121. In this embodiment, the first baffle 124a and the second baffle 124b are preferably triangular, and a receiving groove 120a is formed between the first baffle 124a and the second baffle 124b, and the receiving groove 120a is used for mounting a prism, a plane mirror or other components. When the prism is installed in the accommodating groove 120a, a reflection surface of the prism (not shown) is attached to the second mounting plate 121, and meanwhile, a light incident surface and a light emitting surface of the prism are located above the second mounting plate 121, and two side surfaces of the prism are attached to the first baffle 124a and the second baffle 124b, so that after light is incident from the light incident surface of the prism, the light is reflected to the light emitting surface by the reflection surface and is emitted, and in the process, the first baffle 124a and the second baffle 124b can prevent the light from being transmitted from two side surfaces of the prism.

It will be understood that when the carrier 120 is used to mount a mirror or other component, the structure of the receiving groove 120a may be configured accordingly, which is well known to those skilled in the art and will not be described in detail.

As shown in fig. 3-4 and 7, in the present embodiment, the two ends of the front watch of the second mounting plate 121 are further provided with fixing blocks 125 in a protruding manner, and the fixing blocks 125 are provided with at least one second connecting post 126, and the second connecting post 126 is used for mounting an elastic member 140 (described in detail later).

Referring to fig. 3 to 6, in the present embodiment, the mounting base 110 further includes a supporting base plate 114 and a rear sidewall 115, the first sidewall 111 and the second sidewall 112 are connected to two ends of the supporting base plate 114, the rear sidewall 115 is connected to a rear side of the supporting base plate 114, and two ends of the rear sidewall 115 are connected to the first sidewall 111 and the second sidewall 112; the first mounting plate 113 is disposed obliquely relative to the supporting base plate 114 and the rear sidewall 115, and a transition inclined surface or an arc surface is disposed between the upper end of the first mounting plate 113 and the rear sidewall 115 and between the lower end of the first mounting plate 113 and the supporting base plate 114. In addition, the first mounting plate 113 is provided with a first through hole 1131, the rear sidewall 115 is provided with a second through hole 1151 corresponding to the first through hole 1131, and the first through hole 1131 and the second through hole 1151 are used for mounting the electrical connector 160, which will be described in detail later.

With continued reference to fig. 5-6, in the present embodiment, each of the first and

second sidewalls

111, 112 is substantially in the shape of a right triangle, a right-angled edge of each of the first and

second sidewalls

111, 112 is connected to the supporting bottom plate 114, and a distance is provided between the edges of the first and

second sidewalls

111, 112 and the supporting bottom plate 114, so that two ends of the supporting bottom plate 114 in the transverse direction protrude out of the first and

second sidewalls

111, 112 to form a retaining edge 114 a. Meanwhile, the other right-angled sides of the first and

second sidewalls

111 and 112 are connected to the rear sidewall 115, and a certain distance is provided between the plane of the rear sidewall 115 and the edge of the rear side of the supporting bottom plate 113, so that the portion of the rear side of the supporting bottom plate 113 protruding from the rear sidewall 115 also forms a rib 114a, as shown in fig. 6, where the rib 114a is used for installing the outer housing 170, which will be described in detail later.

Referring to fig. 3-4 and 17, after the carrier 120 is pivoted to the first and

second sidewalls

111 and 112, the second mounting plate 121 of the carrier 120 is disposed parallel to the first mounting plate 113, as shown in fig. 17. And, there are gaps between the carrier 120 and the first side wall 111, the second side wall 112, the support bottom 114, and the rear side wall 115, so as to ensure the pivoting of the carrier 120. In addition, when the entire single-shaft motor 100 is subjected to a large external force, the rear sidewall 115 and the support base plate 114 may limit the position of the carrier 120, thereby preventing the prism, the elastic member 140, and other internal components from being damaged.

As shown in fig. 3 to 5, in the present embodiment, the oblique edges of the first and

second sidewalls

111 and 112 are located in front of the mounting seat 110, and at least one first fixing post 116 is protruded from each of the oblique edges of the first and

second sidewalls

111 and 112, and the first fixing post 116 is used for mounting the elastic member 140, which will be described in detail later.

Referring to fig. 4, 9-13, and 15-17, in the present embodiment, the first driving assembly 130a and the second driving assembly 130b have the same structure, and the first driving assembly 130a and the second driving assembly 130b are symmetrically disposed along the axis of the first rotating shaft 122a and the axis of the second rotating shaft 122b, the first driving assembly 130a is preferably disposed above the first rotating shaft 122a and the second rotating shaft 122b, and the second driving assembly 130b is preferably disposed below the first rotating shaft 122a and the second rotating shaft 122b, as shown in fig. 10 and 15. Understandably, the first driving assembly 130a and the second driving assembly 130b are not limited to be symmetrically disposed, and the positions of the two driving assemblies can be interchanged.

Since the first driving assembly 130a and the second driving assembly 130b have the same structure, the second driving assembly 130b will be described in detail as an example. As shown in fig. 9-13, the second driving assembly 130b includes at least one SMA wire 131 and at least one driving arm 132, one end of the driving arm 132 is fixed to the first mounting plate 113, the other end of the driving arm 132 is connected to one end of the SMA wire 131, and the driving arm 132 can generate elastic deformation, when the SMA wire 131 is electrified and heated to contract, the driving arm 132 is forced to generate deformation, so that the driving arm 132 generates displacement and acts on the second mounting plate 121 to push the carrier 120 to rotate.

With continued reference to fig. 9-13 and 16, in this embodiment, the second drive assembly 130 has one SMA wire 131 and two drive arms 132, the two drive arms 132 being symmetrically fixed to the first mounting plate 113 along the X-axis. As shown in fig. 16, the two driving arms 132 have their close ends respectively fixed to the approximate middle of the first mounting plate 113, and have their far ends respectively connected to the two ends of the SMA wire 131, so that the SMA wire 131 is powered by the two driving arms 132. When the SMA wire 131 is electrified and heated to contract, the SMA wire 131 pulls the ends of the two driving arms 132 away from each other, so that the two driving arms 132 deform, and then the ends of the two driving arms 132 away from each other displace, and the ends of the two driving arms 132 away from each other jointly act on the second mounting plate 121 to push the carrier 120 to rotate (see fig. 15). In this embodiment, the two driving arms 132 are pushed by the ends away from each other to act on the two ends of the second mounting plate 121, so that the force applied to the second mounting plate 121 is more balanced, and the carrier 120 is more stable during the rotation process.

It should be understood that the two drive arms 132 may be integrally fixed or formed by fixing the ends of the two drive arms 132 close to each other, or one drive arm 132 may be fixed to the first mounting plate 113 at substantially the middle portion thereof, and both ends of the drive arm 132 may be connected to the SMA wire 131. Of course, it is also possible to provide only one driving arm 132, and to utilize one end of one driving arm 132 to act on the second mounting plate 121, in this way, preferably acting on the middle of the second mounting plate 121. None of the above embodiments affect the functional implementation of the drive arm 132.

Referring to fig. 11 and 16, each driving arm 132 includes a fixing portion 132a, a deformation portion 132b and a driving portion 132c, which are sequentially disposed, the deformation portion 132b can be elastically deformed, the fixing portion 132a is fixed to the first mounting plate 113, and a terminal 132d is protruded from an end of the driving portion 132c away from the deformation portion 132 b. The two driving arms 132 are symmetrically disposed, and both ends of the SMA wire 131 are connected to the terminals 132d, respectively. As shown in fig. 9-14 and fig. 15, when the SMA wire 131 applies a force to the terminal 132d, the deformation portion 132b is deformed, so that the driving portion 132c is displaced, and the end of the driving portion 132c provided with the terminal 132d acts on the second mounting plate 121 to push the carrier 120 to rotate.

In the present embodiment, the fixing portion 132a and the driving portion 132c are both rigid regions, and have little or no deformation, while the deformation portion 132b can be elastically deformed and has a larger deformation, and a flexible hinge is formed between the fixing portion 132a and the driving portion 132c through the deformation portion 132 b. More specifically, the deformation portion 132b obtains a large amount of deformation by setting the thickness of the deformation portion 132b to be smaller than that of the driving portion 132 c. Or/and, a through hole can be arranged on the deformation part 132b, so that the deformation part 132b is in a spring arm form, and the deformation amount of the deformation part 132b is further increased. Of course, the deformation of the deformation portion 132b is not limited to be realized by the thickness or/and the through hole, and other methods are also feasible.

More preferably, the driving portion 132c may be provided in a bent or curved shape, as shown in fig. 15 to 16, such that, when the driving arm 132 is installed, the end thereof provided with the terminal 132d protrudes in a direction away from the first mounting plate 113, that is, the end provided with the terminal 132d protrudes toward the second mounting plate 121, thereby allowing the driving arm 132 to act on the second mounting plate 121 with a small deformation.

With continued reference to fig. 9-13 and 15-16, in this embodiment, the second driving mechanism 130b further includes a pushing block 133, the pushing block 133 is preferably integrally formed by an insulating material, the pushing block 133 is fixed to the end of the driving portion 132c where the terminal 132d is disposed, and the pushing block 133 protrudes away from the first mounting plate 113. When the driving arm 132 is deformed and moved, the pushing block 133 is detachably abutted to the second mounting plate 121, that is, the driving arm 132 is moved to push the second mounting plate 121 through the pushing block 133, and the pushing block 133 has the functions of friction resistance and friction coefficient reduction in the process of contacting with the second mounting plate 121.

In the present embodiment, since the pushing block 133 has a spherical structure, the driving portion 132c is provided with a mounting hole 132e corresponding to the diameter of the pushing block 133, and as shown in fig. 13, the pushing block 133 is engaged with the mounting hole 132e to realize connection. Of course, the pushing block 133 is not limited to the above shape and attachment method, and for example, in other embodiments, the pushing block 133 may be formed in a sheet-like structure, and the pushing block 133 may be directly attached to the driving portion 132c, or a notch may be formed in the pushing block 133, and the pushing block 133 may be engaged with the driving portion 132c by the notch.

With continued reference to fig. 9-13, in the present invention, the fixing portion 132a, the deformation portion 132b, and the driving portion 132c of the driving arm 132 may be integrally formed, or may be separately formed and then fixed as a single body.

In the above embodiment, the driving arm 132 is formed by connecting the fixed metal plate 1321, the arcuate plate 1322, and the fixed plate 1323. The metal plate 1321 has a small thickness so as to be elastically deformable, and a through hole is further formed in a substantially middle portion of the metal plate 1321 to increase the amount of deformation thereof. The deformation portion 132b is formed in the region of the metal plate 1321 having the through hole, and the fixing portion 132a is formed in the region of the metal plate 1321 on the side of the through hole, as shown in fig. 11 to 13, and the fixing portion 132a is fixed to the fixing plate 1323; the area of the metal plate 1321 on the other side of the through hole is fixed to one end of the arcuate plate 1322, and the end of the arcuate plate 1322 remote from the metal plate 1321 is provided with the terminal 132 d.

More specifically, the arcuate plates 1322 are bent. Referring to fig. 13, the connector includes a first section 13221 fixed to the metal plate 1321, a bending section 13222 extending along the first section 13221 to a side far from the metal plate 1321, and a second section 13223 extending along the bending section 13222 to a side far from the metal plate 1321, and the first section 13221 and the second section 13223 are arranged in parallel, the end of the second section 13223 is provided with a terminal 132d in a downward protruding manner, and the second section 13223 is further provided with the above-mentioned pushing block 133. Referring to fig. 15-16, when the drive arm 132 is secured to the first mounting plate 113, the second segment 13223 projects away from the first mounting plate 113 and toward the second mounting plate 121. Therefore, the metal plate 1321 can make the pushing block 133 act on the second mounting plate 121 under a small deformation.

The structure of the first driving assembly 130a will not be described repeatedly; wherein the terminal 132d of the first driving assembly 130a protrudes upward, as shown in fig. 9-10 and 15-16.

Referring now to fig. 4 and 17, in a more preferred embodiment, the single-shaft motor 100 further includes a friction plate 150, and the friction plate 150 is fixed to the back surface of the second mounting plate 121 and corresponds to at least the pushing block 133, so that the shape and size of the friction plate 150 are not particularly limited. In a specific arrangement, the friction plate 150 is rectangular and has a length greater than the distance between the centers of the two pushing blocks 133, and the two friction plates 150 are respectively fixed to the back surface of the second mounting plate 121, so as to ensure that the pushing blocks 133 of the first and

second driving assemblies

130a and 130b can contact the friction plate 150. When the first driving assembly 130a and the second driving assembly 130b apply force to the second mounting plate 121, the pushing block 133 acts on the friction plate 150, so that the friction plate 150 plays a role of insulation and wear resistance.

Referring to fig. 9-13 and 15-17 again, in this embodiment, when the carrier 120 needs to be flipped downward along the direction indicated by the arrow F1 in fig. 17, a large current is applied to the SMA wire 131 of the first driving assembly 130a to cause a large degree of contraction, and the SMA wire 131 contracts due to heat and applies force to the end portions of the two driving arms 132, so as to pull the ends of the two driving arms 132 provided with the terminals 132d to move toward each other, and push the upper portion of the second mounting plate 121 of the carrier 120 through the pushing block 133 disposed on the driving arms 132, so that the carrier 120 is flipped downward along the first rotating shaft 122a and the second rotating shaft 122 b. In the process, the SMA wires 131 of the second driving assembly 130b can be put in tension by applying a small current, so that the pushing blocks 133 of the second driving assembly 130b push the lower portion of the second mounting plate 121, that is, the carrier 120 is pushed upwards during the downward rotation of the carrier 120, and the carrier 120 is prevented from deflecting due to the pushing force on one side only, and the adjustment precision is not affected.

Correspondingly, when the carrier 120 needs to be reset, a large current is applied to the SMA wire 131 of the second driving assembly 130b to cause the SMA wire 131 to contract to a large extent, the SMA wire 131 contracts to apply a force to the ends of the two driving arms 132 provided with the terminals 132d, so that the ends of the driving arms 132 provided with the terminals 132d are pulled to move towards each other, the pushing blocks 133 on the driving arms 132 push the lower portions of the second mounting plates 121, the carrier 120 is turned upwards, and the reset of the carrier 120 is realized. In this process, the SMA wires 131 of the first drive assembly 130a may also be contracted by applying a small current to prevent deflection of the carrier 120.

It should be understood that, when the carrier 120 needs to rotate upward in the direction of arrow F2 in fig. 17, the SMA wire 131 of the second driving assembly 130b is applied with a larger current to contract it to a greater extent, and when the carrier 120 needs to rotate downward to reset, the SMA wire 131 of the first driving assembly 130a is applied with a larger current to contract it to a greater extent, the principle and process are the same as those described above, and will not be described again.

Referring to fig. 9-10 and fig. 15-16, in the present invention, the electrical connector 160 has a first electrical connection portion 161 and a second electrical connection portion 162 arranged at an included angle, specifically, a plane of the first electrical connection portion 161 and a plane of the second electrical connection portion 162 form a certain included angle. In one embodiment, two first electrical connection sheets 1611 and two second electrical connection sheets 1612 are provided, the two first electrical connection sheets 1611 are located at the same horizontal position and are arranged at intervals, the two second electrical connection sheets 1612 are located below the first electrical connection sheets 1611, and the two second electrical connection sheets 1612 are arranged at intervals. Of course, the positions of the first and second

electrical connection pads

1611, 1612 can be interchanged.

Referring to fig. 2, 9 and 15-16, in one embodiment of the present invention, the electrical connector 160 is connected to the mounting base 110 by injection molding, and after the injection molding is completed, the first electrical connection portion 161 of the electrical connector 160 is fixed to the front surface of the first mounting plate 113, and the second electrical connection portion 162 sequentially passes through the first through hole 1131 of the first mounting plate 113 and the second through hole 1151 of the rear sidewall 115 of the mounting base 110 and protrudes out of the mounting base 170 (see fig. 2). Of course, the connection between the electrical connector 160 and the mounting base 110 is not limited to injection molding, and it is also possible to separately mold the two and then mount them or connect them by other methods.

When the electrical connector 160 and the driving assembly 130 are installed, the two first electrical connecting strips 1611 are electrically connected to the two driving arms 132 of the first driving assembly 130a, respectively, for supplying power to the two driving arms 132 of the first driving assembly 130 a; the two second electrical connection pads 1612 are electrically connected to the two driving arms 132 of the second driving assembly 130b, respectively, for supplying power to the two driving arms 132 of the second driving assembly 130 b. In the present embodiment, the electrical connector 160 is connected to the mounting base 110 by injection molding and is stacked on the first mounting plate 113, and then is electrically connected to and supported by the driving arms 132 of the first and

second driving assemblies

130a and 130b, so that the assembly of the single-shaft motor 100 is simpler and the mass production of the single-shaft motor 100 is facilitated.

Continuing with fig. 9-10 and 15-16, in one embodiment, the second electrical connection portion 162 has three connection ends, namely a first connection end 1621, a second connection end 1622 and a third connection end 1623, which are arranged in parallel, wherein the first connection end 1621 is connected to a first electrical connection pad 1611 and a second electrical connection pad 1612, the second connection end 1622 is connected to another first electrical connection pad 1611, the third connection end 1623 is connected to another second electrical connection pad 1612, and the three connection ends protrude out of the mounting base 170, as shown in fig. 2. The positive and negative electric connection of the two first electric connection sheets 1611 and the positive and negative electric connection of the two second electric connection sheets 1612 are realized through three connection ends. It should be understood that the arrangement of three connection ends is not limited, for example, four connection ends can also be arranged to electrically connect the positive and negative electrodes of the first and second

electrical connection sheets

1611 and 1612.

Referring to fig. 3-4 and 14, the two elastic members 140 have the same structure, and one of them will be described in detail. Referring to fig. 4 and 14, the elastic member 140 includes a first connecting portion 141 and a second connecting portion 142 that are disposed at an interval, and at least one elastic arm 143 connected therebetween, one of the first connecting portion 141 and the second connecting portion 142 is connected to the first sidewall 111 or the second sidewall 112, and the other of the first connecting portion 141 and the second connecting portion 142 is connected to the front surface of the second mounting plate 121, so that the elastic arm 143 is driven to deform when the carrier 120 rotates, and the elastic member 140 is used to enhance the restoring capability of the carrier 120.

More specifically, the first connection portion 141 is substantially in a long strip shape, the first connection portion 141 is provided with a first connection hole 1411, the second connection portion 142 is in a sheet or T-shaped structure, the second connection portion 142 is disposed corresponding to a substantially middle portion of the first connection portion 141 and spaced therefrom, the second connection portion 142 is provided with a second connection hole 1421, and two symmetrical elastic arms 143 are connected between the first connection portion 141 and the second connection portion 142, specifically, one of the elastic arms 143 is connected to upper ends of the first connection portion 141 and the second connection portion 142, and the other elastic arm 143 is connected to lower ends of the first connection portion 141 and the second connection portion 142. In the present embodiment, each of the elastic arms 143 preferably has a plurality of arms, and the arms are preferably S-shaped, but the shape of the elastic arm 143 and the number of the arms are not limited to those in the present embodiment, and the elastic arm 143 may have any other shape and structure having a large amount of deformation, such as a curved shape and an arc shape. The shapes of the first connection portion 141 and the second connection portion 142 are not limited to those in the present embodiment.

Referring to fig. 3-4 and 14 again, when the elastic member 140 is mounted, the first connecting portion 141 is connected to the first connecting column 116, and the second connecting portion 142 is connected to the second connecting column 126, so that the elastic member 140 can be mounted easily, and the fixing block 125 is disposed so that the elastic member 140 is located in the same plane, but the fixing block 125 may not be disposed according to the specific positional relationship between the carrier 120 and the mounting base 110. When the carrier 120 rotates in any direction, the elastic arms 143 of the two elastic members 140 at both ends of the carrier are driven to deform, and the carrier 120 is driven to reset by the elastic force generated by the elastic arms 143 recovering to deform.

Referring to fig. 1 to 4 again, in the present invention, the outer housing 170 is covered outside the mounting base 110 and has an opening 171 for exposing the accommodating groove 120a outside. More specifically, the outer casing 170 is rectangular, the opening 171 is disposed on the top surface and one side surface of the outer casing 170, and after the outer casing 170 is covered outside the mounting seat 110, the bottom of the outer casing 170 abuts against the rib 114a, as shown in fig. 1-2, so that the outer casing 170 is convenient to mount. Meanwhile, the first and

second shutters

124a and 124b of the carrier 120 are positioned in the opening 171 and close the opening 171, so that the prism or the plane mirror on the carrier 120 is exposed to the outer case 170.

The operation principle and process of the single-shaft motor 100 with the first driving assembly 130a and the second driving assembly 130b will be described with reference to fig. 1-18, taking the rotation adjustment of the prism 200 as an embodiment.

When the carrier 120 needs to be turned downward in the direction indicated by the arrow F1 in fig. 17, a larger current is applied to the SMA wire 131 of the first driving assembly 130a to cause the SMA wire 131 to contract to a larger extent, the SMA wire 131 contracts by heat to apply a force to the end portion of the first driving arm 132 where the terminal 132d is disposed, the deformation portions 132b of the two driving arms 132 are pulled to deform, so that the ends of the two driving arms 132 where the terminal 132d is disposed move toward each other, the pushing block 133 disposed on the driving arm 132 pushes the upper portion of the second mounting plate 121 of the carrier 120, so that the carrier 120 rotates around the first rotating shaft 122a and the second rotating shaft 122b, and the carrier 120 is further turned downward in the direction indicated by the arrow F1. In the process, the SMA wire 131 of the second driving assembly 130b may also be put in tension by applying a small current, so that the pushing block 133 of the second driving assembly 130b pushes the lower portion of the second mounting plate 121, that is, the carrier 120 is pushed upwards during the downward rotation of the carrier 120, thereby preventing the deflection of the carrier 120 caused by the pushing force on only one side, which affects the adjustment precision.

During the process of turning the carrier 120 downward in the direction of arrow F1 in fig. 17, both elastic members 140 will be deformed. When the carrier 120 is turned downward to a proper position, the SMA wires 131 are powered off, and the elastic force generated by the deformation of the two elastic members 140 can be used to drive the carrier 120 to rotate upward for resetting. Further, the SMA wire 131 of the second driving assembly 130b may be contracted by applying a certain current, and the SMA wire 131 is contracted by heat to apply a force to the ends of the two driving arms 132 provided with the terminals 132d, so as to pull the ends of the driving arms 132 provided with the terminals 132d to move towards each other, and push the lower portion of the second mounting plate 121 through the pushing block 133 on the driving arms 132, so that the carrier 120 rotates around the first rotating shaft 122a and the second rotating shaft 122b to turn upwards in the direction indicated by the arrow F2 in fig. 17, thereby resetting the carrier 120. Through the combined action of the SMA wires 131 and the elastic members 140, the carrier 120 can be driven to reset rapidly, and the response speed is increased.

Correspondingly, when the carrier 120 needs to be turned upwards in the direction indicated by the arrow F2 in fig. 17, a larger current is applied to the SMA wire 131 of the second driving assembly 130b to cause the SMA wire 131 to contract to a larger extent, the SMA wire 131 contracts thermally to apply a force to the end of the driving arm 132 provided with the terminal 132d, so as to pull the end of the driving arm 132 provided with the terminal 132d to move towards each other, and the pushing block 133 on the driving arm 132 pushes the lower portion of the second mounting plate 121, so as to push the carrier 120 to rotate around the first rotating shaft 122a and the second rotating shaft 122b, so that the carrier 120 is turned upwards in the direction indicated by the arrow F2. In the process, the SMA wires 131 of the first driving assembly 130a can also be put in a tensioned state by applying a small current, so that the pushing blocks 133 of the first driving assembly 130a push the upper portion of the second mounting plate 121, that is, apply a downward pushing force to the carrier 120, and prevent the carrier 120 from deflecting under a single-side pulling force, which affects the adjustment accuracy.

During the process of turning the carrier 120 upwards along the arrow F2, both elastic members 140 are also deformed. When the carrier 120 is turned over upward to a proper position, the SMA wires 131 of the second driving assembly 130b are powered off, and the elastic force generated by the two elastic members 140 recovering the deformation can be used to drive the carrier 120 to turn over downward and reset. Furthermore, a certain current may be applied to the SMA wire 131 of the first driving assembly 130a to contract, and the SMA wire 131 contracts when heated and applies a force to the end portions of the two driving arms 132, so as to pull the ends of the two driving arms 132 provided with the terminal 132d to move towards each other, and push the upper portion of the second mounting plate 121 of the carrier 120 through the pushing block 133 disposed on the driving arms 132, so as to push the carrier 120 to rotate around the first rotating shaft 122a and the second rotating shaft 122b and turn downward in the direction indicated by the arrow F1, thereby resetting the carrier 120. The SMA wire 131 and the elastic member 140 cooperate to drive the carrier 120 to reset rapidly, thereby increasing the response speed.

In the above process, the driving carrier 120 rotates upward or downward to realize adjustment of a larger angle, so when the single-shaft motor 100 is used in a general camera module, the field of view range of the prism 200 can be enlarged, as shown by an arrow F in fig. 18, the viewing angle is increased, the full field of view range of the prism 200 is scanned, and then the image synthesis technology is matched to realize the effect of a panoramic photo, so that a large field of view can be shot by using the small image sensor 300, and the shooting of the panoramic photo by the user rotating the electronic device as in the existing mode is not needed; and when single-axis motor 100 was used for periscopic camera module, then drive prism 200 rotated in order to compensate camera module or electronic equipment's small shake, because the angle of adjustment of carrier 120 is big, consequently can increase the anti-shake angle to better anti-shake effect has.

In summary, the single-shaft motor 100 of the present invention has the following technical effects: first, the two ends of the second mounting plate 121 of the carrier 120 are convexly provided with the first rotating shaft 122a and the second rotating shaft 122b which are positioned on a straight line, and the carrier 120 is pivoted to the first side wall 111 and the second side wall 112 of the mounting seat 110 through the first rotating shaft 122a and the second rotating shaft 122b, so that the assembly precision between the carrier 120 and the mounting seat 110 can be improved in the production process, the error between the single-shaft motors 100 produced in batches is reduced, and the yield of the single-shaft motors 100 produced in batches is improved; the carrier 120 rotates around the first rotating shaft 122a and the second rotating shaft 122b for adjustment, and compared with the mode that the carrier rotates around a virtual shaft in the prior art, the rotating shaft can reduce the jumping or shaking of the carrier 120 in the rotating process, so that the carrier 120 rotates stably, and the adjustment precision is improved; thirdly, the SMA wire 131 is adopted for driving, compared with the existing electromagnetic driving mode, the structure of the driving assembly 130 is simplified, and the power consumption during adjustment is reduced; fourthly, when the SMA wire 131 is heated and contracted, the driving arm 132 directly acts on the second mounting plate 121 to push the carrier 120 to rotate, so that the stress point of the second mounting plate 121 is close to the rotating shaft thereof, and the rotating angle of the carrier 120 is increased, therefore, the single-shaft motor 100 can be used in a general camera module to realize a scanning function, that is, the field range of a prism or a plane mirror on the carrier 120 is enlarged, so as to increase the viewing angle, the full field range of the prism or the plane mirror is scanned, and the image synthesis technology is matched, so that the effect of a panoramic photo can be realized, the purpose of using a small image sensor to shoot a large field of view is achieved, and the single-shaft motor 100 can also be used in a periscopic camera module to perform anti-shake compensation, and increase the anti-shake angle, so as to have a better anti-shake effect; therefore, the single-shaft motor has wider application range; and the first mounting plate 113, the driving assembly 130 and the second mounting plate 121 are mounted in a stacked manner, so that the assembly of the single-shaft motor 100 is more convenient, and the production efficiency is improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. The utility model provides a unipolar motor, is applicable to the camera module, its characterized in that includes:

the mounting seat comprises a first side wall, a second side wall and a first mounting plate, wherein the first side wall and the second side wall are arranged at intervals, and the first mounting plate is connected between the first side wall and the second side wall;

the carrier comprises a second mounting plate, a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft are convexly arranged at two ends of the second mounting plate and are positioned on a straight line;

and when the memory alloy wire is heated and contracted, the driving arm can generate elastic deformation to act on the second mounting plate, so that the carrier is driven to rotate around the first rotating shaft and the second rotating shaft.

2. The single-shaft motor as claimed in claim 1, wherein there are even-numbered groups of said driving members located on both sides of the axis of said first rotating shaft and said second rotating shaft, and said carriers are driven by said even-numbered groups of said driving members to rotate in opposite directions, respectively.

3. The uniaxial motor according to claim 1 or 2, wherein the driving arm comprises a fixing portion, a deformation portion and a driving portion, which are sequentially disposed, the fixing portion is fixed to the first mounting plate, the deformation portion is elastically deformable, the driving portion is connected to the memory alloy wire, and the deformation portion is deformable when the memory alloy wire applies force to the driving portion, so that the driving portion is displaced and acts on the second mounting plate.

4. The uniaxial motor as set forth in claim 3, wherein the thickness of the deformation portion is smaller than that of the driving portion, or/and the deformation portion is provided with a through hole.

5. The single-shaft motor as claimed in claim 3, wherein each of the drive assemblies further comprises a pusher block connected to the drive portion and detachably abutted against the second mounting plate.

6. The single-shaft motor according to claim 3, further comprising a friction plate fixed to the second mounting plate and detachably abutted with the driving portion.

7. The single-shaft motor according to claim 1 or 2, further comprising at least one elastic member, wherein the elastic member is connected to the mounting seat and the carrier, respectively, and can deform the elastic member when the carrier rotates, and the elastic member drives the carrier to return when the elastic member returns to the deformed state.

8. The single-shaft motor as claimed in claim 7, wherein the elastic member includes a first connecting portion, a second connecting portion and at least one elastic arm connected therebetween, one of the first connecting portion and the second connecting portion is connected to the first sidewall or the second sidewall, the other of the first connecting portion and the second connecting portion is connected to the second mounting plate, and the carrier rotates to drive the elastic arm to deform.

9. The single-shaft motor as claimed in claim 1 or 2, wherein the second mounting plate is provided with a first baffle plate and a second baffle plate protruding from a side surface thereof away from the driving assembly, the first baffle plate and the second baffle plate being spaced apart from each other to form a receiving groove therebetween.

10. The single-shaft motor according to claim 9, further comprising an outer housing covering the mounting seat and having an opening exposing the accommodating groove outside thereof, and an electrical connector electrically connected to the driving arm and having one end protruding outside the outer housing.