CN213957719U - Drive motor and image pickup apparatus - Google Patents
Drive motor and image pickup apparatus Download PDFInfo
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- CN213957719U CN213957719U CN202022638000.8U CN202022638000U CN213957719U CN 213957719 U CN213957719 U CN 213957719U CN 202022638000 U CN202022638000 U CN 202022638000U CN 213957719 U CN213957719 U CN 213957719U
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Abstract
The utility model discloses a driving motor and camera equipment, wherein driving motor includes: a movable portion; the bearing part is movably arranged on the movable part and provided with an elastic arm, the free end of the elastic arm is abutted against the movable part, and the elastic arm is used for driving the movable part to move; one end of the memory alloy wire is connected with the elastic arm, the other end of the memory alloy wire is connected with the bearing part, and the distance from the connection point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is smaller than the arm length of the elastic arm. The embodiment of the utility model provides a not only can increase the drive stroke, and occupy smallly.
Description
Technical Field
The utility model relates to a technical field makes a video recording, in particular to driving motor and camera equipment.
Background
The drive motor is a device for realizing a driving motion of the imaging lens in the imaging apparatus. At present, memory alloy wires are generally adopted for driving, and the memory alloy wires generally have large driving force but small driving stroke. After the memory alloy wire is electrified, the memory alloy wire contracts, so that a pulling force is generated, and the driving movement is realized. In order to increase the driving stroke, the length of the memory alloy wire is usually increased at present, for example, the memory alloy wire is arranged around the device, so that the length of the memory alloy wire is increased to increase the driving stroke, but the driving motor with the structure occupies a larger volume.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a driving motor not only can increase the drive stroke, and occupies smallly.
The utility model discloses still provide a camera equipment that has above-mentioned driving motor.
According to the utility model discloses a drive motor of first aspect embodiment includes:
a movable portion;
the bearing part is movably arranged on the movable part and provided with an elastic arm, the free end of the elastic arm is abutted against the movable part, and the elastic arm is used for driving the movable part to move;
one end of the memory alloy wire is connected with the elastic arm, the other end of the memory alloy wire is connected with the bearing part, and the distance from the connection point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is smaller than the arm length of the elastic arm.
According to the utility model discloses driving motor has following beneficial effect at least: the drive motor of this embodiment includes movable part, load-bearing part and memory alloy line, through being equipped with the elastic arm on load-bearing part, the one end and the elastic arm of memory alloy line are connected, and the other end and the load-bearing part of memory alloy line are connected, and the purpose that sets up like this is: based on the lever principle, the free end of the elastic arm is abutted against the movable part, when the memory alloy wire is electrified, the memory alloy wire is electrified and contracted to pull the elastic arm, and the elastic arm moves under the action of the tensile force of the memory alloy wire to drive the free end of the elastic arm to drive the movable part to move; and because the distance from the connecting point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is less than the arm length of the elastic arm, the memory alloy wire can pull the elastic arm to generate a larger amplitude so as to further enlarge the driving stroke of the movable part. Compare with prior art increases the drive stroke through the length of extension memory alloy wire, the drive motor of this embodiment can increase the drive stroke through setting up the elastic arm in order to drive the motion of movable part, and need not to adopt the memory alloy wire of length extension, can make the volume occupied of drive motor reduce, can control the drive stroke of movable part more accurately through the shrink degree of control memory alloy wire.
According to some embodiments of the present invention, the two sides of each of two opposite angles of the carrying portion are provided with the fixing portion, and the two sides of each of the other two opposite angles of the carrying portion are provided with the elastic arm; the number of the memory alloy wires is four, one end of one memory alloy wire is connected with one elastic arm, and the other end of the other memory alloy wire is connected with the fixing part which is arranged opposite to the elastic arm.
According to some embodiments of the present invention, the bearing part comprises a base plate and a fixing plate, the fixing plate is disposed on the base plate, the movable part is movably disposed on the fixing plate, one of the base plate and the fixing plate is disposed with the elastic arm, and the other is disposed with the fixing part.
According to some embodiments of the utility model, the base plate is provided with a plurality of, and every mutually independent between the base plate, the elastic arm correspondence sets up in the difference on the base plate.
According to some embodiments of the present invention, two of the memory alloy wires are arranged in different directions, and the height between the memory alloy wires is different.
According to the utility model discloses a some embodiments, the elastic arm is equipped with the connection piece, the connection piece arrives the distance of the stiff end of elastic arm is less than the arm length of elastic arm, adjacent two highly differ between the connection piece on the elastic arm, adjacent two highly differ between the fixed part, just the height of connection piece and relative setting the height of fixed part is the same, one the one end and one of memory alloy line the connection piece is connected, one the other end of memory alloy line with the connection piece sets up relatively the fixed part is connected.
According to some embodiments of the invention, the movable part is provided with four grooves, one the memory alloy wire is located one in the groove.
According to some embodiments of the invention, the elastic arm comprises a fixed portion and a deformable portion, the fixed portion and the deformable portion are connected to form an L-shape, the fixed portion is perpendicular to the movable portion, the fixed portion is the fixed end of the elastic arm, the free end of the deformable portion abuts against the movable portion.
According to some embodiments of the utility model, the movable part corresponds the position of the free end of elastic arm is equipped with wear-resisting portion, the free end of elastic arm with wear-resisting portion butt.
According to the second aspect embodiment of the present invention, an image pickup apparatus includes the drive motor according to the first aspect embodiment of the present invention.
According to the utility model discloses camera equipment has following beneficial effect at least: by adopting the driving motor, the driving stroke of the movable part can be increased to realize the anti-shake effect, and the interference of overlarge magnetism on the camera equipment can not be generated; in addition, the occupied volume of the image pickup apparatus can be effectively reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a driving motor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a driving motor according to an embodiment of the present invention;
FIG. 3 is an exploded view of the drive motor shown in FIG. 2;
fig. 4 is a plan view of a drive motor according to an embodiment of the present invention;
fig. 5 is a plan view of the drive motor according to the embodiment of the present invention (the movable portion is not shown).
Reference numerals:
a movable part 100, a groove 101, a wear-resistant part 102,
A bearing part 200, an elastic arm 210, a connecting piece 211, a fixed part 212, a deformed part 213, a fixed part 220, a substrate 230, a fixed plate 240,
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The drive motor according to the present invention is described below with reference to the drawings.
Referring to fig. 1 to 5, a drive motor according to an embodiment of a first aspect of the present invention includes: a movable portion 100; the bearing part 200, the movable part 100 is movably arranged on the bearing part 200, the bearing part 200 is provided with an elastic arm 210, the free end of the elastic arm 210 is abutted against the movable part 100, and the elastic arm 210 is used for driving the movable part 100 to move; one end of the memory alloy wire 300 is connected with the elastic arm 210, the other end of the memory alloy wire 300 is connected with the bearing part 200, and the distance from the connection point of the memory alloy wire 300 and the elastic arm 210 to the fixed end of the elastic arm 210 is less than the arm length of the elastic arm 210.
It can be understood that the driving motor of the present embodiment includes the movable portion 100, the bearing portion 200 and the memory alloy wire 300, by providing the elastic arm 210 on the bearing portion 200, one end of the memory alloy wire 300 is connected with the elastic arm 210, and the other end of the memory alloy wire 300 is connected with the bearing portion 200, which are arranged to: based on the lever principle, the free end of the elastic arm 210 is abutted against the movable part 100, when the memory alloy wire 300 is electrified, the memory alloy wire 300 is electrified and contracted to pull the elastic arm 210, and the elastic arm 210 moves under the action of tension to drive the free end of the elastic arm 210 to drive the movable part 100 to move; and because the distance from the connection point of the memory alloy wire 300 and the elastic arm 210 to the fixed end of the elastic arm 210 is less than the arm length of the elastic arm 210, the memory alloy wire 300 can pull the elastic arm 210 to generate a larger amplitude, i.e. the elastic arm 210 obtains a larger elasticity, so as to further enlarge the driving stroke of the movable part 100.
It is understood that the carrier 200 can be provided in one piece, for example, with an FPC or with a wire on metal to achieve circuit connection.
It is understood that the supporting portion 200 may be provided with a fixing portion at a position opposite to the elastic arm 210, one end of the memory alloy wire 300 is connected to the elastic arm 210, and the other end of the memory alloy wire 300 is connected to the fixing portion. In other embodiments, the supporting portion 200 may further have a fixing portion at an angular point or other position.
According to the utility model discloses driving motor has following beneficial effect at least: compared with the prior art that the driving stroke is increased by lengthening the length of the memory alloy wire 300, the driving motor of the embodiment can increase the driving stroke by arranging the elastic arm 210 to drive the movable part 100 to move, does not need to adopt the memory alloy wire 300 with the lengthened length, can reduce the occupied volume of the driving motor, and can more accurately control the driving stroke of the movable part 100 by controlling the contraction degree of the memory alloy wire 300.
Referring to fig. 2 and 3, according to some embodiments of the present invention, two opposite corners of the supporting portion 200 are provided with fixing portions 220 at two sides of each opposite corner, and two opposite corners of the supporting portion 200 are provided with elastic arms 210 at two sides of each opposite corner; the number of the memory alloy wires 300 is four, one memory alloy wire 300 is connected to one elastic arm 210 at one end, and the other memory alloy wire 300 is connected to the fixing portion 220 opposite to the elastic arm 210 at the other end.
It is understood that, by providing the fixing portion 220 on both sides of each of two opposite corners of the carrying portion 200 and providing the elastic arm 210 on both sides of each of the other two opposite corners of the carrying portion 200, one elastic arm 210 abuts on each of four different sides of the movable portion 100. One end of one memory alloy wire 300 is connected with one elastic arm 210, and the other end of one memory alloy wire 300 is connected with the fixing part 220 arranged opposite to the elastic arm 210, so that one elastic arm 210 and one fixing part 220 are correspondingly arranged on one memory alloy wire 300, and the elastic arm 210 and the fixing part 220 are in opposite relation. The reason why one elastic arm 210 is abutted on each of the four different sides of the movable portion 100 is to enable the elastic arm 210 to drive the movable portion 100 to translate or rotate.
The elastic arm 210 drives the mobile part 100 to translate: the memory alloy wire 300 is electrified to contract, and the memory alloy wire 300 drives the elastic arm 210 to move under the action of tension so as to drive the movable part 100 to translate. Specifically, one fixing portion 220 on one side of each of two opposite corners of the carrier 200 may be provided, and the two fixing portions 220 in parallel relationship and respectively located at the two opposite corners may be energized to energize the two memory alloy wires 300 respectively connected to the two fixing portions 220. The memory alloy wire 300 is contracted after being electrified, so that the two elastic arms 210 (namely, one elastic arm 210 on one side of each of the other two opposite corners of the bearing part 200) which are arranged opposite to the two fixed parts 220 are driven to move, and the free ends of the two elastic arms 210 simultaneously act to clamp two opposite sides of the movable part 100; at this time, the other fixing portion 220 on the other side of each of two opposite corners of the carrying portion 200 is energized to energize the memory alloy wire 300 connected to the other fixing portion 220, and the memory alloy wire 300 contracts after being energized to generate a pulling force to move the elastic arm 210 opposite to the other fixing portion 220. In this process, the two opposite sides of the movable portion 100 are clamped by the free ends of the two elastic arms 210, that is, the two elastic arms 210 on the two opposite sides of the movable portion 100 generate forces with equal magnitude and opposite directions, and the resultant force is zero; when the movable portion 100 is simultaneously pushed by the free end of the elastic arm 210 disposed opposite to the other fixed portion 220, the movable portion 100 can be translated while being clamped, so as to drive the movable portion 100 to translate in the X-axis direction or in the Y-axis direction.
The elastic arm 210 drives the movable part 100 to rotate: for example, the movable part 100 is driven to rotate clockwise or counterclockwise. The specific process is as follows: for one fixing portion 220 on one side of each of two opposite corners of the carrier 200, two fixing portions 220 in a parallel relationship and respectively located at the two opposite corners are energized, so that two memory alloy wires 300 respectively connected to the two fixing portions 220 are energized. The memory alloy wire 300 is electrically energized and then contracted, thereby moving the two elastic arms 210 (i.e., one elastic arm 210 on one side of each of the other two opposite corners of the substrate 230) disposed opposite to the two fixed portions 220, and the free ends of the two elastic arms 210 respectively act on the two opposite sides of the movable portion 100, thereby driving the movable portion 100 to rotate. Because the free ends of the two elastic arms 210 act on the two opposite sides of the movable portion 100, each elastic arm 210 will generate two pairs of moment of couple, and apply different currents, i.e. increasing and decreasing moments, at the same time, so as to realize clockwise or counterclockwise rotation of the movable portion 100.
In other embodiments, one end to which a plurality of memory alloy wires 300 are connected may be further disposed at different positions of one elastic arm 210, and the other ends of the plurality of memory alloy wires 300 are connected to one fixing portion 220 disposed opposite to the one elastic arm 210, so that by applying currents of different magnitudes to the plurality of memory alloy wires 300, for example, in order to achieve driving translation, the currents of the memory alloy wires 300 close to the fixing end of the elastic arm 210 are set to be maximum for the elastic arm 210 perpendicular to the translation direction (X-axis direction or Y-axis direction), and are sequentially decreased in a decreasing manner, the currents of the memory alloy wires 300 gradually distant from the fixing end of the elastic arm 210 are gradually decreased, and the driving stroke is increased by the difference in the currents of the different memory alloy wires 300 at different positions of the one elastic arm 210.
In other embodiments, each of two opposite corners of the supporting portion 200 is provided with a stepped notch having two steps, and a fixing portion 220 is provided on a sidewall of one step of the stepped notch, so that space can be effectively saved.
The driving motor of the present embodiment can drive the movable portion 100 not only to move horizontally, but also to rotate the movable portion 100.
According to some embodiments of the present invention, the supporting portion 200 includes a base plate 230 and a fixing plate 240, the fixing plate 240 is disposed on the base plate 230, the movable portion 100 is movably disposed on the fixing plate 240, one of the base plate 230 and the fixing plate 240 is provided with the elastic arm 210, and the other is provided with the fixing portion 240.
Referring to fig. 2 and 3, the carrier 200 includes a substrate 230 and a fixing plate 240, and the elastic arms 210 are disposed on the substrate 230 and the fixing portions 220 are disposed on the fixing plate 240, so that the memory alloy wires 300 connected to the fixing portions 220 can be controlled to be energized, respectively, and the elastic arms 210 can be controlled to be energized. The present embodiment can facilitate wiring by providing the carrier part 200 as the substrate 230 and the fixing plate 240.
In other embodiments, the fixing plate 240 is provided with the elastic arm 210, and the substrate 230 is provided with the fixing portion 240.
Referring to fig. 3, according to some embodiments of the present invention, the base plates 230 are provided in a plurality, and each base plate 230 is independent of the other base plate, and the elastic arms 210 are correspondingly provided on different base plates 230.
It is understood that, by providing several substrates 230, and each substrate 230 is independent of the other, it is convenient to drive each individual elastic arm 210. Specifically, the substrate 230 is made of a conductive material, the fixing plate 240 is made of a conductive material, the substrate 230 and the fixing plate 240 are insulated from each other, pins are disposed on both the substrate 230 and the fixing plate 240 on the same side of the carrying portion 200, the pins on the substrate 230 and the pins on the fixing plate 240 form terminals, and the terminals are convenient for wiring. The power-on control is realized by the substrate 230 and the fixing plate 240, so that the memory alloy wire 300 connected with the fixing part 220 can be powered on after the substrate 230 and the fixing plate 240 are conductive. The memory alloy wire 300 will have a driving force after being electrified, so that the memory alloy wire 300 can pull the elastic arm 210 to move after being electrified and contracted, so as to further drive the movable part 100 to move.
According to some embodiments of the present invention, the height between the two memory alloy wires 300 disposed in different directions is different.
It can be understood that the difference in height between the two memory alloy wires 300 arranged in different directions is to prevent the memory alloy wires 300 from winding, crossing or contacting, so as to better realize the driving of the elastic arm 210 correspondingly connected with the single memory alloy wire 300.
Referring to fig. 2 and 3, according to some embodiments of the present invention, the elastic arm 210 is provided with a connection piece 211, a distance from the connection piece 211 to a fixed end of the elastic arm 210 is less than an arm length of the elastic arm 210, heights between the connection pieces 211 on two adjacent elastic arms 210 are different, heights between two adjacent fixing portions 220 are different, and a height of the connection piece 211 is the same as a height of the fixing portion 220 disposed opposite to the connection piece 211, one end of one memory alloy wire 300 is connected to one connection piece 211, and the other end of one memory alloy wire 300 is connected to the fixing portion 220 disposed opposite to the connection piece 211.
It can be understood that, by connecting one end of one memory alloy wire 300 with the connecting piece 211 on one elastic arm 210 and the other end of one memory alloy wire 300 with the fixing part 220 opposite to the connecting piece 211, the connecting piece 211 on one elastic arm 210 has the same height as the fixing part 220 opposite to the connecting piece 211, and the connecting pieces 211 on two adjacent elastic arms 210 have different heights and the two adjacent fixing parts 220 have different heights, the purpose of this arrangement is to make the heights between two memory alloy wires 300 arranged in different directions different, so as to prevent the winding intersection or contact between the memory alloy wires 300, and the like, and to influence the driving effect of the movable part 100. In other embodiments, the fixing portion 220 may be L-shaped, so as to set the height of the memory alloy wire 300 connected to the fixing portion 220, and to save the space in the driving motor, thereby reducing the volume of the driving motor.
It is understood that the resilient arm 210 and the connecting piece 211 may be integrally formed.
Referring to fig. 1, according to some embodiments of the present invention, the movable portion 100 is provided with four grooves 101, and one memory alloy wire 300 is positioned in one groove 101.
It can be understood that, by providing four grooves 101 in the movable portion 100 and one memory alloy wire 300 in one groove 101, space in the driving motor is saved, thereby facilitating the reduction in size of the driving motor.
Referring to fig. 3, according to some embodiments of the present invention, the elastic arm 210 includes a fixed portion 212 and a deformation portion 213, the fixed portion 212 and the deformation portion 213 are connected to form an L shape, the fixed portion 212 is perpendicular to the movable portion 100, the fixed portion 212 is a fixed end of the elastic arm 210, and a free end of the deformation portion 213 abuts against the movable portion 100.
It can be understood that the elastic arm 210 includes a fixed portion 212 and a deformation portion 213, the fixed portion 212 and the deformation portion 213 are connected to form an L shape, the fixed portion 212 is a fixed end of the elastic arm 210, and a distance from a connection point of the memory alloy wire 300 and the deformation portion 213 of the elastic arm 210 to the fixed portion 212 is smaller than an arm length of the elastic arm 210 (i.e., smaller than a length of the deformation portion 213), and by disposing the memory alloy wire 300 close to the fixed portion 212 of the elastic arm 210, when the memory alloy wire 300 connected to one end of the deformation portion 213 of the elastic arm 210 is energized, the memory alloy wire 300 is energized to contract and then drives the deformation portion 213 to generate a large deformation, so that a free end of the deformation portion 213 drives the movable portion 100 to move, and a driving stroke is increased.
It is understood that the deformation portion 213 may be disposed parallel to the movable portion 100. In other embodiments, an angle may also be provided between the deformed portion 213 and the movable portion 100, and the free end of the deformed portion 213 may be able to abut against the movable portion 100.
Referring to fig. 2 and 3, according to some embodiments of the present invention, the wear-resistant portion 102 is disposed at a position of the movable portion 100 corresponding to the free end of the elastic arm 210, and the free end of the elastic arm 210 abuts against the wear-resistant portion 102.
It can be understood that, the wear-resistant portion 102 is disposed at the position of the movable portion 100 corresponding to the free end of the elastic arm 210, so that when the memory alloy wire 300 is powered on, the memory alloy wire 300 drives the elastic arm 210 to move, and when the free end of the elastic arm 210 abuts against the movable portion 100 and pushes the movable portion 100 to move, friction between the free end of the elastic arm 210 and the movable portion 100 can be effectively reduced, so as to ensure the service life of the elastic arm 210.
It is understood that the movable portion 100 may be made of a wear-resistant material.
According to the second aspect embodiment of the present invention, an image pickup apparatus includes the drive motor according to the first aspect embodiment of the present invention.
According to the utility model discloses camera equipment has following beneficial effect at least: by adopting the driving motor, the driving stroke of the movable part can be increased to realize the anti-shake effect, and the interference of overlarge magnetism on the camera equipment can not be generated; in addition, the occupied volume of the image pickup apparatus can be effectively reduced.
Other configurations and operations of the image pickup apparatus according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.
A drive motor according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 5 as one specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.
The utility model discloses drive motor includes:
the bearing part 200, the bearing part 200 includes a substrate 230 and a fixing plate 240, the fixing plate 240 is disposed on the substrate 230, two sides of each of two opposite corners of the fixing plate 240 are provided with fixing portions 220, and two sides of each of the other two opposite corners of the substrate 230 are provided with elastic arms 210; two opposite corners of the fixing plate 240 form staggered diagonal lines with the other two opposite corners of the base plate 230; the fixing portion 220 is provided in an L-shape;
the movable part 100 is provided with four grooves 101, and the positions of the movable part 100, which correspond to the free ends of the four elastic arms 210, are respectively provided with four wear-resistant parts 102; the movable part 100 is movably arranged on the fixed plate 240;
the elastic arm 210 comprises a fixed part 212 and a deformed part 213, the fixed part 212 and the deformed part 213 are connected to form an L shape, the fixed part 212 is perpendicular to the movable part 100, the fixed part 212 is the fixed end of the elastic arm 210, the deformed part 213 is parallel to the movable part 100, and the free end of the deformed part 213 is abutted with the wear-resistant part 102; the deformation part 213 is further provided with a connecting piece 211, the distance from the connecting piece 211 to the fixed end of the elastic arm 210 is smaller than the arm length of the elastic arm 210 (the set arm length resisted by the elastic arm 210 is longer, and the effect of enlarging the stroke is generated), the connecting pieces 211 on two adjacent elastic arms 210 are different in height, the two adjacent fixing parts 220 are different in height, and the height of the connecting piece 211 is the same as that of the fixing parts 220 which are oppositely arranged; the function of the spring arm 210 is to allow the cantilevered portion of the spring arm 210 (i.e., the deformation portion 213) to form a hinged (approximately rotating) effect at the free end.
Four memory alloy wires 300, one end of one memory alloy wire 300 is connected with one connecting piece 211, and the other end of one memory alloy wire 300 is connected with a fixing part 220 which is arranged opposite to the connecting piece 211; a memory alloy wire 300 is located within one of the grooves 101.
According to the utility model discloses the driving motor, through so setting up, can reach some effects as follows at least:
the movable portion 100 is driven to rotate, for example, the movable portion 100 is driven to rotate clockwise or counterclockwise, the process is as follows: for one fixing portion 220 on one side of each of two opposite corners of the fixing plate 240, two fixing portions 220 in a parallel relationship and respectively located at the two opposite corners are energized to energize two memory alloy wires 300 respectively connected to the two fixing portions 220. The memory alloy wire 300 is electrically energized and then contracted, thereby moving the two elastic arms 210 (i.e., one elastic arm 210 on one side of each of the other two opposite corners of the substrate 230) disposed opposite to the two fixing portions 220. Since the elastic arm 210 includes the fixed portion 212 and the deformed portion 213, the free end of the deformed portion 213 abuts against the wear-resistant portion 102 of the movable portion 100, the distance from the connecting piece 211 to the fixed portion 212 is smaller than the arm length of the elastic arm 210 (i.e., the length of the deformed portion 213), and the connecting piece 211 on the deformed portion 213 is pulled by the memory alloy wire 300 so that the free ends of the deformed portions 213 of the two elastic arms 210 simultaneously act on opposite sides of the movable portion 100, thereby achieving the purpose of driving the movable portion 100 to rotate. Since the free ends of the deformation parts 213 of the two elastic arms 210 act on two opposite sides of the movable portion 100, each elastic arm 210 will generate two pairs of moment of couple, and apply different currents, i.e. increasing and decreasing moments, at the same time, the movable portion 100 can be rotated clockwise or counterclockwise.
The movable portion 100 is driven to translate, for example, the movable portion 100 is driven to translate along the X-axis direction or along the Y-axis direction, the process is as follows: for one fixing portion 220 on one side of each of two opposite corners of the fixing plate 240, two fixing portions 220 in a parallel relationship and respectively located at the two opposite corners are energized to energize two memory alloy wires 300 respectively connected to the two fixing portions 220. The memory alloy wire 300 is contracted after being energized, thereby moving the two elastic arms 210 (i.e., one elastic arm 210 on one side of each of the other two opposite corners of the substrate 230) disposed opposite to the two fixed parts 220, so that the free ends of the deformed parts 213 of the two elastic arms 210 simultaneously act to clamp the opposite sides of the movable part 100; at this time, the other fixing portion 220 on the other side of one of the two opposite corners of the fixing plate 240 is energized to energize the memory alloy wire 300 connected to the other fixing portion 220, and the memory alloy wire 300 contracts after being energized to generate a pulling force to move the elastic arm 210 disposed opposite to the other fixing portion 220. In this process, the two opposite sides of the movable part 100 are clamped by the free ends of the deformation parts 213 of the two elastic arms 210, i.e. the two elastic arms 210 on the two opposite sides of the movable part 100 generate forces with equal magnitude and opposite directions, and the resultant force is zero; when the movable part 100 is simultaneously pushed by the free ends of the deforming portions 213 of the elastic arms 210 disposed opposite to the other fixing portion 220, the movable part 100 can be caused to translate while being clamped, so as to cause the movable part 100 to be driven to translate in the X-axis direction or in the Y-axis direction.
By adopting the driving motor, the driving stroke of the movable part can be increased so as to realize the anti-shake effect; in addition, the occupied volume can be effectively reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A drive motor, comprising:
a movable portion;
the bearing part is movably arranged on the movable part and provided with an elastic arm, the free end of the elastic arm is abutted against the movable part, and the elastic arm is used for driving the movable part to move;
one end of the memory alloy wire is connected with the elastic arm, the other end of the memory alloy wire is connected with the bearing part, and the distance from the connection point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is smaller than the arm length of the elastic arm.
2. The drive motor according to claim 1, wherein both sides of each of two opposite corners of the carrier portion are provided with the fixing portions, and both sides of each of the other two opposite corners of the carrier portion are provided with the elastic arms; the number of the memory alloy wires is four, one end of one memory alloy wire is connected with one elastic arm, and the other end of the other memory alloy wire is connected with the fixing part which is arranged opposite to the elastic arm.
3. The driving motor of claim 2, wherein the bearing portion comprises a base plate and a fixed plate, the fixed plate is disposed on the base plate, the movable portion is movably disposed on the fixed plate, one of the base plate and the fixed plate is disposed with the elastic arm, and the other is disposed with the fixed portion.
4. The driving motor as claimed in claim 3, wherein the base plates are provided in plural numbers, and each base plate is independent of the other base plate, and the elastic arms are correspondingly provided on different base plates.
5. The drive motor according to claim 2, 3 or 4, wherein the heights between two memory alloy wires arranged in different directions are different.
6. The drive motor according to claim 5, wherein the elastic arm is provided with a connecting piece, a distance from the connecting piece to the fixed end of the elastic arm is smaller than an arm length of the elastic arm, a height between the connecting pieces on two adjacent elastic arms is different, a height between two adjacent fixed portions is different, and a height of the connecting piece is the same as a height of the fixed portions disposed opposite to each other, one end of one memory alloy wire is connected to one connecting piece, and the other end of one memory alloy wire is connected to the fixed portion disposed opposite to the connecting piece.
7. The drive motor according to claim 2, 3 or 4, wherein the movable portion is provided with four grooves, and one of the memory alloy wires is located in one of the grooves.
8. The drive motor according to claim 1, wherein the elastic arm includes a fixed portion and a deformable portion, the fixed portion and the deformable portion are connected to form an L-shape, the fixed portion is perpendicular to the movable portion, the fixed portion is a fixed end of the elastic arm, and a free end of the deformable portion abuts against the movable portion.
9. The drive motor according to claim 1, wherein the movable portion is provided with a wear portion at a position corresponding to a free end of the elastic arm, the free end of the elastic arm abutting against the wear portion.
10. An image pickup apparatus characterized by comprising the drive motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022638000.8U CN213957719U (en) | 2020-11-13 | 2020-11-13 | Drive motor and image pickup apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022638000.8U CN213957719U (en) | 2020-11-13 | 2020-11-13 | Drive motor and image pickup apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN213957719U true CN213957719U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022638000.8U Active CN213957719U (en) | 2020-11-13 | 2020-11-13 | Drive motor and image pickup apparatus |
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| CN (1) | CN213957719U (en) |
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