CN210488203U - Focusing device - Google Patents
Focusing device Download PDFInfo
- Publication number
- CN210488203U CN210488203U CN201921935725.4U CN201921935725U CN210488203U CN 210488203 U CN210488203 U CN 210488203U CN 201921935725 U CN201921935725 U CN 201921935725U CN 210488203 U CN210488203 U CN 210488203U
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- Prior art keywords
- focusing device
- coil
- base
- reed
- shell
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- 238000009434 installation Methods 0.000 claims abstract description 19
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims 3
- 239000003292 glue Substances 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
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Abstract
The utility model discloses a focusing device belongs to image equipment technical field, including shell and base, the base is established the bottom of shell, the installation inner chamber has been seted up in the shell, be equipped with reed, lens mount, magnet group, coil and lower reed in the installation inner chamber, go up the reed with the reed is established respectively down the upper and lower both ends of lens mount, the coil casing is established the outside of lens mount, magnet group is eight edges of octagon distribution shell. Corresponding to eight sides of the coil, respectively. The magnet group is arranged on the outer side of the coil in an octagonal manner, the range of the magnet group surrounded by the coil is increased by increasing the number of magnets, so that the magnetic field intensity is increased, the driving force of the magnetic field for moving the lens seat up and down during focusing is increased, the lens seat can bear heavier lenses, and the stroke of moving the lens seat up and down is larger and more stable.
Description
Technical Field
The utility model relates to an image equipment technical field especially relates to a focusing device.
Background
The focusing device mainly has the advantages that a lens mounted on a lens carrier seat is driven to move up and down along the central axis direction, so that the focusing function is realized, the magnetic field part of the existing focusing device is generally provided with four magnets, the driving force to the lens carrier seat is small due to the fact that the magnetic field force formed by the four magnets is small, the focusing stroke is small, the lens carrier seat is difficult to apply to a camera with a large size, and the application range is narrow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drive the big focusing device of power.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a focusing device, includes shell and base, the base is established the bottom of shell, set up the installation inner chamber in the shell, installation inner intracavity is equipped with reed, lens mount, magnet group, coil and lower reed, go up the reed with the reed is established respectively down the upper and lower both ends of lens mount, the coil cover is established the outside of lens mount, magnet group is the octagon and distributes the outside of coil.
The magnet group is arranged on the outer side of the coil in an octagonal shape, so that the range surrounded by the coil is increased and the number of magnets is increased, the magnetic field intensity is increased, namely, the driving force of the magnetic field for the lifting movement of the lens seat during focusing is increased, the lifting movement of the lens seat is more stable, and the lens seat is suitable for lenses with larger specifications.
Preferably, the cross section of the installation inner cavity is regular octagon, the magnet group comprises four corner magnets and four side magnets, the four corner magnets are respectively fixed on the inner wall of each inclined side of the installation inner cavity, and the four corner magnets are respectively fixed on the inner wall of each straight side of the installation inner cavity.
Through setting up the installation inner chamber that the cross-section is regular octagon, make angle magnet and limit magnet all fix the inner wall at the installation inner chamber to realize the octagon distribution of magnet group, be convenient for assemble.
Preferably, the thickness of the corner magnets is greater than the thickness of the side magnets.
Because the cross-section of installation inner chamber is the octagon, and the distance of octagon four corners to coil is greater than the distance of the four sides of octagon to coil, consequently sets up the thickness that angle magnet is greater than the thickness of limit magnet, has realized having increased magnetic field intensity under the condition that does not influence the assembly, has realized the increase of drive power.
Preferably, the lower spring plate is an octagonal thin plate, positioning holes are formed in each inclined edge of the lower spring plate respectively, first positioning blocks protruding upwards are arranged at four corners of the base respectively, and the positioning holes correspond to the first positioning blocks one to one.
The positioning of the lower reed is realized, and the left and right movement of the lower reed is limited.
Preferably, the lower spring plate is further provided with a deformation groove and a narrow groove, the deformation groove is formed in one side of the positioning hole and extends clockwise to the adjacent straight edge, and the narrow groove is formed in the inner side of the positioning hole in parallel and extends clockwise to the adjacent straight edge.
And a narrow groove is formed for improving the k value of the lower reed, so that the up-and-down motion linearity is better, and the focusing precision is improved.
Preferably, the surface of the housing is provided with an annular boss protruding upward.
Thereby reduced the plastic part of equipment through setting up annular boss, be convenient for assemble and saved material and cost of labor.
Preferably, the shell is equipped with a plurality of jack catchs that extend downwards, the jack catch inserts the coil with between the lens mount, the outside of lens mount is equipped with a plurality of spacing kicking blocks, and is a plurality of the jack catch is established respectively between two spacing kicking blocks of adjacent setting.
The jack catch sets up the inboard at the coil, has played the magnetic conduction effect and has increased magnetic field force, and the jack catch is established between two spacing kicking blocks that set up adjacently, has played the effect of only revolving to the lens seat.
Preferably, the four corners of the base are respectively provided with a second positioning block, the outer side of the shell is respectively attached to the second positioning blocks, and the inner side of the second positioning blocks is provided with glue dispensing grooves.
The glue dispensing groove is used for adding glue, so that the shell is bonded with the base through the glue, the second positioning block is arranged, the shell is limited when the assembly is realized, and the assembly of the shell and the base is facilitated.
Preferably, the optical filter further comprises an optical filter, wherein an optical filter mounting groove is formed in the bottom of the base, and the optical filter is arranged in the optical filter mounting groove.
The filter direct mount of being convenient for need not to set up other mounting structure in the bottom of base, has improved the utilization in space.
Preferably, copper nuts are embedded on the opposite corners of the bottom of the base.
The installation of the focusing device is facilitated.
The utility model has the advantages that: the magnet group is arranged on the outer side of the coil in an octagonal shape, so that the range surrounded by the coil is increased and the number of magnets is increased, the magnetic field intensity is increased, namely, the driving force of the magnetic field for the lifting movement of the lens seat during focusing is increased, the lifting movement of the lens seat is more stable, and the lens seat is suitable for lenses with larger specifications.
Drawings
The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic diagram of the arrangement of the magnet assembly of the present invention;
FIG. 4 is a schematic structural view of the lower spring plate of the present invention;
fig. 5 is a schematic structural diagram of the base of the present invention.
Wherein: the lens holder comprises a shell 1, a base 2, an installation inner cavity 11, an upper reed 31, a lens holder 4, a magnet group 5, a coil 6, a lower reed 32, a corner magnet 51, a side magnet 52, a first positioning hole 21, a positioning hole 321, a deformation groove 322, a narrow groove 323, a second positioning hole 22, an annular boss 12, a clamping jaw 13, a limiting top block 41, a glue dispensing groove 42, a filter installation groove 23 and a copper nut 24.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The focusing device of the embodiment is shown in the attached drawings 1-2, and comprises a shell 1 and a base 2, wherein the base 2 is arranged at the bottom of the shell 1, the shell 1 is a regular octagonal shell with an upper opening and a lower opening, an installation inner cavity 11 with a projection shape and an octagonal shape is formed by cutting four corners of a square at 45 degrees, the side obtained by cutting the corners is a bevel side, and the rest side of the original square is a straight side;
as shown in fig. 3, an upper spring 31, a lens mount 4, a magnet assembly 5, a coil 6 and a lower spring 32 are disposed in the mounting cavity 11, wherein the upper spring 31 and the lower spring 32 are respectively disposed at the upper end and the lower end of the lens mount 4, the coil 6 is sleeved on the outer side of the lens mount 4, the magnet assembly 5 includes four corner magnets 51 and four side magnets 52, the four corner magnets 51 are respectively fixed on the inner wall of each inclined side of the mounting cavity 11, and the four corner magnets 51 are respectively fixed on the inner wall of each straight side of the mounting cavity 11.
The magnet assembly 5 is easily assembled by fixing the corner magnets 51 and the side magnets 52 to the inner wall of the mounting cavity 11 so that the magnets 5 are distributed in an octagonal shape outside the coil 6.
The thickness of the corner magnet 51 is greater than that of the side magnet 52, and the cross section of the installation cavity 11 is octagonal, and the distance from four corners of the octagonal to the coil 6 is greater than that from four sides of the octagonal to the coil 6, so that the thickness of the corner magnet 51 is greater than that of the side magnet 52, the magnetic field intensity is increased under the condition that the assembly is not affected, and the increase of the driving force is realized.
As shown in fig. 4 and 5, the lower spring plate 32 is an octagonal thin plate, each of the oblique sides of the lower spring plate 32 is respectively provided with a positioning hole 321, the base 2 is a quadrilateral base 2, four corners of the base 2 are respectively provided with a first positioning block 21 protruding upwards, and the positioning holes 321 correspond to the first positioning blocks 21 one by one. The positioning of the lower spring plate 32 is realized, the assembly of the lower spring plate 32 is convenient, and the horizontal movement of the lower spring plate 32 is avoided.
The lower spring plate 32 is further provided with a deformation groove 322 and a narrow groove 323, the deformation groove 322 and the narrow groove 323 are both in a "C" shape, the deformation groove 322 is opened at one side of the positioning hole 321 and extends clockwise to the adjacent straight edge, and the narrow groove 323 is opened at the inner side of the positioning hole 321 in parallel and extends clockwise to the adjacent straight edge.
The deformation of the lower spring plate 32 is realized by arranging the deformation groove 322, the lens holder 4 is pushed to move up and down by the deformation of the upper spring plate 31 and the lower spring plate 32, and the ratio of the width of the narrow groove 323 to the width of the deformation groove 322 is set to be 1: 3-1: 4, the k value of the lower spring plate 32 is improved, so that the up-and-down motion linearity is better, and the focusing precision is improved.
The lower spring 32 is also provided with an electrode plate for energizing the lower spring 32.
The surface of the housing 1 is provided with an annular boss 12 projecting upward. The annular boss 12 is arranged, so that the assembled plastic parts are reduced, the assembly is facilitated, and the material cost and the labor cost are saved.
A plurality of limiting top blocks 41 are arranged on the outer side of the lens mount 4, in the embodiment, the number of the limiting top blocks 41 is eight, the coil 6 is in an octagonal ring shape, and the eight limiting top blocks 41 respectively abut against each inner angle of the inner wall of the coil 6; the upper opening of shell 1 is equipped with a plurality of jack catch 13 that extend downwards, and in this embodiment, jack catch 13 is four, and jack catch 13 inserts coil 6 with between the lens mount 4, four jack catch 13 establish respectively between two spacing kicking blocks 41 of adjacent setting. The jack catch 13 is arranged on the inner side of the coil 6, plays a role of magnetic conduction to increase magnetic field force, and the jack catch 13 is arranged between the two adjacent limiting jacking blocks 41, and plays a role of rotation stopping on the lens holder 4.
The four corners of base 2 are equipped with second locating piece 22 respectively, and the outside of shell 1 is laminated with second locating piece 22 respectively to support the hypotenuse in the shell 1 outside, the inboard of second locating piece 22 still is seted up and is had some glue groove 42, and some glue groove 42 is used for adding glue, makes shell 1 and base 2 adhere. Glue dispensing groove 42 is used for adding glue, makes shell 1 and base 2 pass through the glue bonding, and sets up second locating piece 22, and to shell 1 spacing when realizing the assembly, the assembly of shell 1 and base 2 of being convenient for, second locating piece 22 is established in the outside of first locating piece.
The optical filter device further comprises an optical filter (not shown in the drawing), the bottom of the base 2 is provided with an optical filter installation groove 23, and the optical filter is arranged in the optical filter installation groove 23. The filter direct mount of being convenient for need not to set up other mounting structure in the bottom of base 2, has improved the utilization in space.
The magnet group 5 is arranged on the outer side of the coil 6 in an octagonal shape, so that the range of the magnet group 5 surrounding the coil 6 is increased, the number of magnets is increased, the magnetic field intensity is increased, namely, the driving force of the magnetic field on the lifting movement of the lens seat 4 during focusing is increased, the lifting movement of the lens seat 4 is more stable, and the lens is suitable for lenses with larger specifications.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a focusing device, its characterized in that, includes shell and base, the base is established the bottom of shell, set up the installation inner chamber in the shell, installation inner chamber is equipped with reed, lens mount, magnet group, coil and lower reed, go up the reed with the reed is established respectively down the upper and lower both ends of lens mount, the coil cover is established the outside of lens mount, the magnet group is the octagon and distributes the outside of coil.
2. The focusing device as claimed in claim 1, wherein the cross section of the mounting cavity is a regular octagon, the magnet assembly includes four corner magnets and four side magnets, the four corner magnets are respectively fixed on the inner wall of each bevel side of the mounting cavity, and the four corner magnets are respectively fixed on the inner wall of each straight side of the mounting cavity.
3. The focusing device of claim 2, wherein the thickness of the corner magnets is greater than the thickness of the side magnets.
4. The focusing device as claimed in claim 1, wherein the bottom spring is an octagonal thin plate, each of the oblique sides of the bottom spring has a positioning hole, each of the four corners of the base has a first positioning block protruding upward, and the positioning holes correspond to the first positioning blocks one by one.
5. The focusing device as claimed in claim 4, wherein the lower spring plate is further provided with a deformation groove and a narrow groove, the deformation groove is formed on one side of the positioning hole and extends clockwise to the adjacent straight edge, and the narrow groove is formed on the inner side of the positioning hole in parallel and extends clockwise to the adjacent straight edge.
6. The focusing device of claim 1, wherein the surface of the housing is provided with an annular projection projecting upward.
7. The focusing device of claim 1, wherein the housing has a plurality of claws extending downward, the claws are inserted between the coil and the lens holder, the outer side of the lens holder has a plurality of limit stoppers, and the claws are respectively disposed between two adjacent limit stoppers.
8. The focusing device of claim 1, wherein four corners of the base are respectively provided with a second positioning block, the outer side of the housing is respectively attached to the second positioning blocks, and the inner side of the second positioning blocks is further provided with a dispensing slot.
9. The focusing device of claim 1, further comprising a filter, wherein a filter mounting groove is formed at the bottom of the base, and the filter is disposed in the filter mounting groove.
10. The focusing device of claim 1, wherein a copper nut is embedded in a diagonal of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935725.4U CN210488203U (en) | 2019-11-11 | 2019-11-11 | Focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935725.4U CN210488203U (en) | 2019-11-11 | 2019-11-11 | Focusing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210488203U true CN210488203U (en) | 2020-05-08 |
Family
ID=70510692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921935725.4U Expired - Fee Related CN210488203U (en) | 2019-11-11 | 2019-11-11 | Focusing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210488203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285972A (en) * | 2021-12-23 | 2022-04-05 | 盛泰光电科技股份有限公司 | Periscopic camera |
-
2019
- 2019-11-11 CN CN201921935725.4U patent/CN210488203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285972A (en) * | 2021-12-23 | 2022-04-05 | 盛泰光电科技股份有限公司 | Periscopic camera |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |