CN113131709A - Motor assembly, motor mounting structure and zoom - Google Patents
Motor assembly, motor mounting structure and zoom Download PDFInfo
- Publication number
- CN113131709A CN113131709A CN202110487766.7A CN202110487766A CN113131709A CN 113131709 A CN113131709 A CN 113131709A CN 202110487766 A CN202110487766 A CN 202110487766A CN 113131709 A CN113131709 A CN 113131709A
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- Prior art keywords
- side plate
- coil
- hole
- motor assembly
- magnet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a motor component, a motor mounting structure and a zoom lens, wherein the motor component comprises a magnet yoke, a magnet and a moving piece, wherein the magnet yoke is annularly arranged in an up-and-down direction in a surrounding manner so as to form a through hole extending in the up-and-down direction; the magnet is arranged on the inner wall of the through hole and used for forming a closed magnetic field together with the magnetic yoke; the moving piece is provided with a coil, the coil part is positioned in the through hole, and the winding direction of the coil is vertical to the length direction of the through hole, so that the coil can move in the through hole after being electrified for focusing of the zoom lens. According to the motor assembly provided by the invention, the closed magnetic field is formed by the magnet and the annular magnetic yoke, so that the motor assembly is simpler in structure and smaller in size, the overall size of the zoom lens is smaller, the required installation space is small, and the application range is wider.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a motor assembly, a motor mounting structure and a zoom lens.
Background
With the rapid development of high and new technologies, zoom lenses have been widely used, the zoom lens changes a shooting range by changing a focal length, a motor is arranged inside the zoom lens, and zooming of the zoom lens is realized by driving of the motor. At present, the motor arranged in the zoom lens for zooming has a complex structure and a large volume, so that the overall size of the zoom lens is large, the required installation space is large, and the application range is limited.
Disclosure of Invention
The invention mainly aims to provide a motor component, a motor mounting structure and a zoom lens, and aims to solve the problems of large integral size, large required mounting space and limited application range of the zoom lens caused by large volume and complex structure of a motor in the zoom lens.
To achieve the above object, the present invention provides a motor assembly, including:
a yoke disposed in a ring shape surrounding in an up-down direction to form a through hole extending in the up-down direction;
the magnet is arranged on the inner wall of the through hole and used for forming a closed magnetic field together with the magnet yoke; and the number of the first and second groups,
and the moving piece is provided with a coil, the coil part is positioned in the through hole, and the winding direction of the coil is vertical to the length direction of the through hole, so that the coil can move in the through hole after being electrified for focusing of the zoom lens.
Optionally, the yoke comprises:
the side plates extend along the up-down direction, and each side plate comprises a first side plate and a second side plate which are oppositely arranged along the front-back direction;
the bottom plate is connected with the lower end of the first side plate and the lower end of the second side plate; and the number of the first and second groups,
the cover plate is connected with the upper end of the first side plate and the upper end of the second side plate;
wherein the magnet is mounted on the side plate, and the coil part is wound around the outer periphery of the side plate.
Optionally, one of the first side plate and the second side plate is used for mounting the magnet, and the other is provided with the coil in a winding manner.
Optionally, the cover plate is provided with a limiting groove;
the upper end of the first side plate is provided with an installation block extending towards the cover plate, and the installation block is used for being matched with the limiting groove to be fixedly connected with the cover plate and the first side plate.
Optionally, the left end and/or the right end of the second side plate extend to form a limiting block.
Optionally, a first limiting block is formed by extending the left end of the second side plate, a second limiting block is formed by extending the right end of the second side plate, and the length of the first limiting block in the vertical direction is greater than the length of the second limiting block in the vertical direction.
Optionally, the limiting block is provided with a positioning hole and a positioning column.
The invention also provides a motor mounting structure, which comprises:
the fixing seat is provided with a cavity with an upward opening; and the number of the first and second groups,
motor element, install in hold the intracavity, motor element includes:
a yoke disposed in a ring shape surrounding in an up-down direction to form a through hole extending in the up-down direction;
the magnet is arranged on the inner wall of the through hole and used for forming a closed magnetic field together with the magnet yoke; and the number of the first and second groups,
and the moving piece is provided with a coil, the coil part is positioned in the through hole, and the winding direction of the coil is vertical to the length direction of the through hole, so that the coil can move in the through hole after being electrified for focusing of the zoom lens.
Optionally, a fixing groove is formed in a side wall of the cavity, and a magnetic yoke of the motor assembly is correspondingly installed in the fixing groove.
The present invention further provides a zoom lens, including a motor mounting structure, the motor mounting structure including:
the fixing seat is provided with a cavity with an upward opening; and the number of the first and second groups,
motor element, install in hold the intracavity, motor element includes:
a yoke disposed in a ring shape surrounding in an up-down direction to form a through hole extending in the up-down direction;
the magnet is arranged on the inner wall of the through hole and used for forming a closed magnetic field together with the magnet yoke; and the number of the first and second groups,
and the moving piece is provided with a coil, the coil part is positioned in the through hole, and the winding direction of the coil is vertical to the length direction of the through hole, so that the coil can move in the through hole after being electrified for focusing of the zoom lens.
According to the technical scheme, the motor assembly comprises a magnet yoke, a magnet and a moving piece, the magnet yoke is annularly provided with a through hole, the magnet is installed on the inner wall of the through hole, the magnet yoke has the magnetic conduction effect, the magnet installed on the inner wall of the through hole and the magnet yoke form a closed magnetic field together, a coil is arranged on the moving piece, the coil is partially located in the through hole, the winding direction of the coil is perpendicular to the length direction of the through hole, when the coil is electrified, force can be generated in the closed magnetic field to push the coil to move in the through hole, and the coil drives the moving piece to move, so that focusing of the zoom lens is achieved. At present, the motor in the zoom lens is through two magnetism differences the magnetite forms magnetic field, and is through one in this scheme the magnetite and annular set up the yoke forms closed magnetic field, makes motor element's structure is simpler, and the size reduces, and then makes zoom lens's whole size less, and required installation space is little, and the range of application is wider.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a perspective view of one embodiment of a motor assembly provided by the present invention;
fig. 2 is a top view of the motor assembly provided in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
With the rapid development of high and new technologies, zoom lenses have been widely used, the zoom lens changes a shooting range by changing a focal length, a motor is arranged inside the zoom lens, and zooming of the zoom lens is realized by driving of the motor. At present, the motor arranged in the zoom lens for zooming has a complex structure and a large volume, so that the overall size of the zoom lens is large, the required installation space is large, and the application range is limited. In view of this, the present invention improves and designs the motor assembly, so that the motor assembly has a simpler structure and a reduced size, and further, the zoom lens has a smaller overall size, a small required installation space, and a wider application range.
Fig. 1 and 2 show an embodiment of the present invention.
In the embodiment of the present invention, as shown in fig. 1 and 2, the motor assembly 100 includes a magnetic yoke 1, a magnet 2, and a moving member 3, wherein the magnetic yoke 1 is annularly disposed in an up-down direction to form a through hole extending in the up-down direction; the magnet 2 is arranged on the inner wall of the through hole and is used for forming a closed magnetic field together with the magnet yoke 1; the moving member 3 is provided with a coil 31, a part of the coil 31 is located in the through hole, and the winding direction of the coil 31 is perpendicular to the length direction of the through hole, so that the coil 31 can move in the through hole after being electrified for focusing of the zoom lens.
By using the motor assembly 100, it is helpful to reduce the overall size of the zoom lens. Motor element 100 includes yoke 1, magnetite 2 and moving part 3, yoke 1 is the annular setting and is formed with the through-hole, magnetite 2 install in the inner wall of through-hole, yoke 1 has the effect of magnetic conduction, makes and installs the through-hole inner wall magnetite 2 with yoke 1 forms closed magnetic field jointly, be equipped with coil 31 on the moving part 3, coil 31 part is located in the through-hole, just coil 31's wire winding direction with the length direction of through-hole is perpendicular, works as coil 31 circular telegram can produce power in the closed magnetic field, promotes coil 31 is in remove in the through-hole, coil 31 drives moving part 3 removes, realizes zoom's focusing. At present, the motor in the zoom is through two magnetism differences magnetite 2 forms the magnetic field, and is through one in this scheme magnetite 2 and annular set up yoke 1 forms closed magnetic field, makes motor element 100's structure is simpler, and the size reduces, and then makes the whole size of zoom less, and required installation space is little, and the range of application is wider.
The magnet yoke 1 is provided with the through hole, the magnet 2 is installed in the through hole, and the coil 31 is partially located in the through hole. Specifically, in the present embodiment, as shown in fig. 1, the yoke 1 includes side plates extending in the up-down direction, including a first side plate 111 and a second side plate 112 disposed opposite to each other in the front-back direction, a bottom plate 12, and a cover plate 13; the bottom plate 12 connects the lower end of the first side plate 111 and the lower end of the second side plate 112; the cover plate 13 connects the upper end of the first side plate 111 and the upper end of the second side plate 112; the magnet 2 is mounted on the side plate, and the coil 31 is partially wound around the outer periphery of the side plate. The magnetic yoke 1 is a closed annular structure and is formed by enclosing the side plate, the bottom plate 12 and the cover plate 13 together, the magnet 2 is mounted on the side plate and forms a closed magnetic field together with the magnetic yoke 1, the coil 31 is partially wound on the periphery of the side plate, when the coil 31 is electrified, force can be generated in the closed magnetic field to push the coil 31 to move up and down along the side plate, the coil 31 moves to drive the moving member 3 to move, and a lens arranged on the moving member 3 realizes zooming.
The side plates include the first side plate 111 and the second side plate 112, the magnet 2 is mounted on the side plates, and the coil 31 is partially wound around the periphery of the side plates, and the specific installation positions of the magnet 2 and the coil 31 are not limited, and the magnet 2 may be mounted on the first side plate 111 or the second side plate 112, the coil 31 may be wound around the periphery of the first side plate 111 or the second side plate 112 on which the magnet 2 is mounted, or the magnet 2 may be mounted on one of the first side plate 111 and the second side plate 112, and the coil 31 may be wound around the other periphery. In this embodiment, as shown in fig. 1, one of the first side plate 111 and the second side plate 112 is used for mounting the magnet 2, and the other is provided with the coil 31 around the outer periphery thereof. When the magnet 2 is mounted on the first side plate 111 or the second side plate 112, and the coil 31 is wound around the periphery of the first side plate 111 or the second side plate 112 on which the magnet 2 is mounted, the coil 31 needs to simultaneously bypass the magnet 2, and the size of the coil 31 is large, so that the overall size of the motor assembly 100 is increased, and the size of the entire zoom lens is affected. In order to make the size of the coil 31 as small as possible, specifically, the coil 31 and the magnet 2 are respectively disposed on the first side plate 111 and the second side plate 112 which are oppositely disposed, so that the size of the coil 31 wound on the first side plate 111 is small, the overall size of the motor assembly 100 is small, and further, the size of the zoom lens on which the motor assembly 100 is mounted is reduced, the required mounting space is reduced, which is helpful for improving the application range of the zoom lens.
The cover plate 13 is connected to the first side plate 111 and the second side plate 112. Specifically, in the present embodiment, as shown in fig. 1, the cover plate 13 is provided with a limiting groove 13 a; the upper end of the first side plate 111 is provided with an installation block 111a extending towards the cover plate 13, and the installation block 111a is used for being matched with the limiting groove 13a so as to fixedly connect the cover plate 13 and the first side plate 111. Through the cooperation of the mounting block 111a and the limiting groove 13a, the first side plate 111 and the second side plate 112 are detachably connected with the cover plate 13, so that the coil 31 can be conveniently inserted into the through hole of the magnetic yoke 1, and the mounting block is convenient to mount and simple to process and manufacture.
The magnet yoke 1 is provided with a fixing structure for fixing. Specifically, in the present embodiment, the left end and/or the right end of the second side plate 112 extends to form a stopper. The magnet yoke 1 provided with the magnet 2 can be fixedly installed by providing the stopper at the left and/or right end of the second side plate 112.
Specifically, in this embodiment, as shown in fig. 1, a first stopper 112a is formed at the left end of the second side plate 112 in an extending manner, a second stopper 112b is formed at the right end of the second side plate 112 in an extending manner, and the length of the first stopper 112a in the vertical direction is greater than the length of the second stopper 112b in the vertical direction. The limiting blocks are respectively arranged at the left end and the right end of the second side plate 112, so that the magnetic yoke 1 is more reliably fixed and installed.
More specifically, in this embodiment, the limiting block is provided with a positioning hole a and a positioning column B. And the magnetic yoke 1 is fixed through the positioning hole A and the positioning column B.
The invention also provides a motor mounting structure, which comprises a fixed seat and the motor assembly 100, wherein the fixed seat is provided with a cavity with an upward opening; the motor assembly 100 is installed in the cavity, the specific structure of the motor assembly 100 refers to the above embodiments, and the specific structure of the motor assembly 100 is shown in fig. 1. It can be understood that, since the motor mounting structure of the present invention adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Specifically, in this embodiment, a fixing groove is formed in a sidewall of the cavity, and the yoke 1 of the motor assembly 100 is correspondingly installed in the fixing groove. Second curb plate 112 in yoke 1 is equipped with the stopper, be equipped with on the stopper locating hole A with reference column B, through locating hole A with reference column B will yoke 1 is fixed the fixed slot, through the lateral wall that holds the chamber sets up the fixed slot, can with yoke 1 is installed in the fixed slot, reduces motor element 100 is in hold the required space of intracavity installation, make motor mounting structure's size reduces, is applied to the zoom after, helps reducing zoom's size, makes zoom's range of application bigger.
The invention also provides a zoom lens, which comprises a motor mounting structure, and the specific structure of the motor mounting structure refers to the embodiment. The motor mounting structure is mounted to achieve focusing of the zoom lens, and the motor mounting structure is small in size, so that the size of the zoom lens using the motor mounting structure is reduced, the mounting space required by the zoom lens is reduced, and the application range of the zoom lens is widened.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A motor assembly for a zoom lens, the motor assembly comprising:
a yoke disposed in a ring shape surrounding in an up-down direction to form a through hole extending in the up-down direction;
the magnet is arranged on the inner wall of the through hole and used for forming a closed magnetic field together with the magnet yoke; and the number of the first and second groups,
and the moving piece is provided with a coil, the coil part is positioned in the through hole, and the winding direction of the coil is vertical to the length direction of the through hole, so that the coil can move in the through hole after being electrified for focusing of the zoom lens.
2. The motor assembly of claim 1, wherein the yoke comprises:
the side plates extend along the up-down direction, and each side plate comprises a first side plate and a second side plate which are oppositely arranged along the front-back direction;
the bottom plate is connected with the lower end of the first side plate and the lower end of the second side plate; and the number of the first and second groups,
the cover plate is connected with the upper end of the first side plate and the upper end of the second side plate;
wherein the magnet is mounted on the side plate, and the coil part is wound around the outer periphery of the side plate.
3. The motor assembly according to claim 2, wherein one of the first side plate and the second side plate is used for mounting the magnet, and the other is provided with the coil around the outer periphery thereof.
4. The motor assembly of claim 2, wherein the cover plate is provided with a retaining groove;
the upper end of the first side plate is provided with an installation block extending towards the cover plate, and the installation block is used for being matched with the limiting groove to be fixedly connected with the cover plate and the first side plate.
5. The motor assembly of claim 4, wherein the left end and/or the right end of the second side plate is extended to form a stopper.
6. The motor assembly as claimed in claim 5, wherein a first stopper is formed at a left end of the second side plate, and a second stopper is formed at a right end of the second side plate, and a length of the first stopper in the up-down direction is greater than a length of the second stopper in the up-down direction.
7. The motor assembly of claim 5, wherein the limiting block is provided with a positioning hole and a positioning column.
8. A motor mounting structure characterized by comprising:
the fixing seat is provided with a cavity with an upward opening; and the number of the first and second groups,
an electric motor assembly as claimed in any one of claims 1 to 7, mounted within the cavity.
9. The motor mounting structure according to claim 8, wherein a fixing groove is formed in a side wall of the cavity, and the yoke of the motor assembly is correspondingly mounted in the fixing groove.
10. A zoom lens comprising the motor mounting structure according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487766.7A CN113131709A (en) | 2021-04-30 | 2021-04-30 | Motor assembly, motor mounting structure and zoom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487766.7A CN113131709A (en) | 2021-04-30 | 2021-04-30 | Motor assembly, motor mounting structure and zoom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113131709A true CN113131709A (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110487766.7A Pending CN113131709A (en) | 2021-04-30 | 2021-04-30 | Motor assembly, motor mounting structure and zoom |
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| Country | Link |
|---|---|
| CN (1) | CN113131709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024104389A1 (en) * | 2022-11-15 | 2024-05-23 | 中山联合光电研究院有限公司 | Voice coil motor, zoom lens, and photographing device |
-
2021
- 2021-04-30 CN CN202110487766.7A patent/CN113131709A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024104389A1 (en) * | 2022-11-15 | 2024-05-23 | 中山联合光电研究院有限公司 | Voice coil motor, zoom lens, and photographing device |
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