CN204964958U - Electromagnetic type light ring device that bore is big, thickness is thin - Google Patents
Electromagnetic type light ring device that bore is big, thickness is thin Download PDFInfo
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- CN204964958U CN204964958U CN201520727449.8U CN201520727449U CN204964958U CN 204964958 U CN204964958 U CN 204964958U CN 201520727449 U CN201520727449 U CN 201520727449U CN 204964958 U CN204964958 U CN 204964958U
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Abstract
The utility model discloses an electromagnetic type light ring device that bore is big, thickness is thin, comprises a base, the base on be equipped with the light ring hole that forms the light path, still be equipped with on the base two can along opposite direction slide with the blade that changes the light ring hole size and through from then drive two blades along the gliding driving lever of opposite direction, its technical scheme's main points are the base on still be equipped with and drive driving lever pivoted driving lever drive arrangement, driving lever drive arrangement including with driving lever fixed connection's magnetite, twined the coil and make and to drive thereby the magnetite rotation drives driving lever pivoted coil former. The utility model discloses thereby driving two blades by the rotation of two coil interaction drive driving levers and along the size of opposite direction slip in order to adjust the light ring hole, having left out motor and gear drive, simple structure is fit for heavy -calibre, the little light ring structure in space.
Description
[technical field]
The utility model belongs to field of optical equipment, specifically relates to the electromagnetic type iris apparatus that a kind of bore is large, thickness is thin.
[background technology]
In the aperture system field of monitoring camera, along with deepening continuously of application, iris apparatus type of service tends to heavy caliber and ultrathin development gradually, so just can more, more effectively control light therethrough camera lens, thus reach the logical light quantity controlling camera lens, ensure that the drawing that camera lens presents is optimum.Heavy caliber iris apparatus, under the controlled prerequisite meeting small-bore aperture, more can control by more light therethrough camera lens; Space after the lower thickness of device for mechanical structure between the more effective guarantee lens wearer of energy.But especially electromagnetic type iris apparatus is also rarely found for heavy caliber and extra-thin iris apparatus in the market.
The utility model is exactly make in view of the situation.
[utility model content]
The utility model object overcomes the deficiencies in the prior art, provides a kind of structure simple and the electromagnetic type iris apparatus that bore is large, thickness is thin.
The utility model is achieved through the following technical solutions:
A kind of bore is large, the electromagnetic type iris apparatus that thickness is thin, include base 1, described base 1 is provided with the diaphragm hole 2 forming light path, described base 1 is also provided with two blades 3 that can slide to change diaphragm hole 2 size in opposite direction and by from then the driving lever 4 that slides in opposite direction of drive two blades 3, it is characterized in that: described base 1 is also provided with the driving lever drive unit 5 that described driving lever 4 can be driven to rotate, described driving lever drive unit 5 includes the magnetite 7 be fixedly connected with described driving lever 4, be tied with coil make it possible to drive the rotation of described magnetite 7 thus drive the coil former 6 that described driving lever 4 rotates.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: described magnetite 7 be enclosed within to coordinate on described driving lever 4 and with driving lever 4 outer wall fixing, the axle center hole of described driving lever 4 is inserted with the locating shaft 8 that together can rotate to reduce with described driving lever 4, magnetite 7 rotation friction, and the inner top of described coil former 6 is provided with the pilot hole 9 for locating described locating shaft 8.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: described coil former 6 comprises the drive coil installation portion 601 for being wound around drive coil and the system for being wound around the imperial coil of system drives coil installation portion 602, described coil former 6 is also provided with multiple aperture 603, and described aperture 603 interpolation has the splicing ear 10 for being connected with external circuit by imperial to described drive coil and system coil.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: be respectively equipped with board in circuit board slot 604, Hall element slot 605 and magnetic post slot 606 at described coil former 6 outer wall, be inserted with flexible PCB, the Hall element 11 be electrically connected with flexible PCB in described board in circuit board slot 604, Hall element slot 605, magnetic post slot 606 respectively and described diaphragm hole 2 can be made when no power to be in the permanent magnetism pillar 12 of closed condition.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: described base 1 is integrally formed with mount pad 101, described driving lever 4 and driving lever drive unit 5 are located on described mount pad 101, described mount pad 101 is snapped with the two pieces of baffle plates 14 arranged in opposite directions, the semicircular indentations that two pieces of baffle plates 14 are provided with forms circular mounting hole 15 when arranging in opposite directions, described magnetite 7 and coil former 6 to be located in described mounting hole 15 and to stretch out mounting hole 15, and described mounting hole 15 passing hole inwall card has the bell housing 16 be enclosed within described coil former 6.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: described coil former 6 covers on described magnetite 7, be provided with snapping bottom described coil former 6 and be fixed on button pin 607 in described baffle plate 14, go back buckle in described base 1 to have and the coil cap 13 coordinated bottom described coil former 6, described coil cap 13 is also provided with the described pilot hole 9 for locating described locating shaft 8.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, it is characterized in that: described driving lever 4 comprises the drive pin 402 that the central authorities be fixed with described magnetite 7 inwall engage round platform 401 and are located at two ends, described base 1 is provided with and inserts arcuate socket 21 for limiting described driving lever 4 rotational angle for described drive pin 402, two described blades 3 are provided with and insert again to make two described blades 3 make the bar hole 17 of reverse motions for two drive pins 402 after described arcuate socket 21 stretches out.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, is characterized in that: on described base 1, be provided with the base rail 18 for reducing friction when described blade 3 moves.
The electromagnetic type iris apparatus that bore described above is large, thickness is thin, is characterized in that: the lateral edges of two described blades 3 is equipped with pilot hole 19, and on described base 1, the corresponding blade inserting described blade 3 slip of restriction in described pilot hole 19 that is provided with links up with 20.
Compared with prior art, the utility model has the following advantages:
1, the utility model is interacted by two coils and drives driving levers to rotate thus drive two blades to slide the size regulating diaphragm hole in opposite direction, and eliminate motor and gear drive, structure is simple, is applicable to the iris diaphragm structure that heavy caliber, space are little.
2, the utility model is provided with locating shaft, instead of driving lever and magnetite is directly placed on base, decreases contact area thus greatly reduces rotation friction.
[accompanying drawing explanation]
Fig. 1 is the utility model stereographic map 1;
Fig. 2 is the utility model stereographic map 2;
Fig. 3 is the utility model cut-open view;
Fig. 4 is the utility model explosive view;
Fig. 5 is the planimetric map under the utility model diaphragm hole full-gear;
Fig. 6 is the planimetric map under the utility model diaphragm hole full off state;
Fig. 7 is the stereographic map 1 of the utility model coil former;
Fig. 8 is the stereographic map 2 of the utility model coil former;
Fig. 9 is the stereographic map of the utility model coil cap;
Figure 10 is the stereographic map of the utility model magnetite;
Figure 11 is the stereographic map of the utility model driving lever;
Figure 12 is the stereographic map of the utility model Hall element.
In figure: 1 is base; 101 is mount pad; 2 is diaphragm hole; 3 is blade; 4 is driving lever; 401 is central authorities' engaging round platforms; 402 is drive pin; 5 is driving lever drive unit; 6 is coil former; 601 is drive coil installation portion; 602 is the imperial coil installation portion of system; 603 is aperture; 604 is board in circuit board slot; 605 is Hall element slot; 606 is magnetic post slot; 607 is button pin; 7 is magnetite; 8 is locating shaft; 9 is pilot hole; 10 is splicing ear; 11 is Hall element; 12 is permanent magnetism pillar; 13 is coil cap; 14 is baffle plate; 15 is mounting hole; 16 is bell housing; 17 is bar hole; 18 is base rail; 19 is pilot hole; 20 is blade hook; 21 is arcuate socket; 22 is lock pair hole.
[embodiment]
Below in conjunction with accompanying drawing, the utility model technical characteristic is described in further detail so that described those skilled in the art understand.
A kind of bore is large, the electromagnetic type iris apparatus that thickness is thin, as shown in Figures 1 to 12, include base 1, described base 1 is provided with the diaphragm hole 2 forming light path, described base 1 is also provided with two blades 3 that can slide to change diaphragm hole 2 size in opposite direction and by from then the driving lever 4 that slides in opposite direction of drive two blades 3, described base 1 is also provided with the driving lever drive unit 5 that described driving lever 4 can be driven to rotate, described driving lever drive unit 5 includes the magnetite 7 be fixedly connected with described driving lever 4, be tied with coil make it possible to drive the rotation of described magnetite 7 thus drive the coil former 6 that described driving lever 4 rotates.Total is paid hole 22 by lock and is fixed in camera lens group.
This device is mainly rotated by the rotating drive driving lever 4 of magnetite 7, is driven the start back and forth of two blades by the rotation of driving lever 4.The different pivot angle of driving lever 4 and aperture area be changing into direct relation, using driving lever 4 horizontal direction as 0 °, when driving lever 4 and the angle of horizontal direction are 31.0 °, aperture is in full off state, as shown in Figure 6; When driving lever 4 and the angle of horizontal direction are-31.0 °, aperture is in opening, as shown in Figure 5.When needing the clear aperture of different size, respond to the different angles of driving lever 4 and horizontal direction mainly through Hall element 11, the different Voltage Feedback of corresponding output controls the size of aperture switch, thus when light is weak, open large clear aperture, when light is strong, open little clear aperture.
Further, described magnetite 7 be enclosed within to coordinate on described driving lever 4 and with driving lever 4 outer wall fixing, the axle center hole of described driving lever 4 is inserted with the locating shaft 8 that together can rotate to reduce with described driving lever 4, magnetite 7 rotation friction, and the inner top of described coil former 6 is provided with the pilot hole 9 for locating described locating shaft 8.The setting of locating shaft 8 decreases the contact area with base 1, thus decreases rotation friction, has the effect of location concurrently simultaneously.Bore is large, thickness is thin to adopt the aperture of the utility model drive unit really to realize, and the utility model aperture not only maximum logical light mouth diameter can reach ∮ 18.1mm, and thickness is thin, and the operation thickness that need take only has 1.84mm.Design length is about 52.9mm, width 37.7mm.Leading portion operation thickness is 1.84mm, is applicable to the iris diaphragm structure that heavy caliber, space are little.
Be respectively equipped with board in circuit board slot 604, Hall element slot 605 and magnetic post slot 606 in described coil former 6 outer wall circumference, be inserted with flexible PCB (not shown), the Hall element 11 be electrically connected with flexible PCB in described board in circuit board slot 604, Hall element slot 605, magnetic post slot 606 respectively and described diaphragm hole 2 can be made when no power to be in the permanent magnetism pillar 12 of closed condition.
Described coil former 6 comprises the drive coil installation portion 601 for being wound around drive coil and the system for being wound around the imperial coil of system drives coil installation portion 602, described drive coil installation portion 601 and the imperial coil installation portion 602 of system are equipped with the ring groove for winding around, the side of close Hall element slot 605 is drive coil installation portion 601, described coil former 6 is also provided with multiple aperture 603, and described aperture 603 interpolation has the splicing ear 10 for being connected with external circuit by imperial to drive coil and system coil.Two coils are coupled together by four splicing ears 10.
Described base 1 is integrally formed with mount pad 101, described driving lever 4 and driving lever drive unit 5 are located on described mount pad 101, described mount pad 101 is snapped with the two pieces of baffle plates 14 arranged in opposite directions, the semicircular indentations that two pieces of baffle plates 14 are provided with forms circular mounting hole 15 when arranging in opposite directions, described magnetite 7 and coil former 6 to be located in described mounting hole 15 and to stretch out mounting hole 15, and described mounting hole 15 passing hole inwall card has the bell housing 16 be enclosed within described coil former 6.
Described coil former 6 covers on described magnetite 7, be provided with snapping bottom described coil former 6 and be fixed on button pin 607 in described baffle plate 14, go back buckle in described base 1 to have and the coil cap 13 coordinated bottom described coil former 6, described coil cap 13 is also provided with the described pilot hole 9 for locating described locating shaft 8.The upper and lower side of locating shaft 8 is positioned in the pilot hole 9 of coil former 6 and coil cap 13 respectively, as shown in Figure 3.
Described driving lever 4 comprises the drive pin 402 that the central authorities be fixed with described magnetite 7 inwall engage round platform 401 and are located at two ends, described base 1 is provided with and inserts arcuate socket 21 for limiting described driving lever 4 rotational angle for described drive pin 402, two described blades 3 are provided with and insert again to make two described blades 3 make the bar hole 17 of reverse motions for two drive pins 402 after described arcuate socket 21 stretches out.
Described base 1 is also provided with the base rail 18 for reducing friction when described blade 3 moves.
The lateral edges of two described blades 3 is equipped with pilot hole 19, and on described base 1, the corresponding blade inserting described blade 3 slip of restriction in described pilot hole 19 that is provided with links up with 20.
Utility model works principle is: power supply connects drive coil and the imperial coil of system by splicing ear 10 again by flexible PCB, when accessing current signal, drive coil produces magnetic field, magnetic field is in corresponding formation S pole, coil former 6 two ends and N pole, and change polarity with the change of current signal, permanent magnet magnetite 7 is by two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, permanent magnet magnetite 7 is changed and corresponding rotation with current signal, and in like manner the imperial permanent magnet magnetite 7 of the imperial end-coil access current signal time system of system changes with current signal and rotates.Acting force due to drive coil is greater than the reacting force of the imperial coil of system, and then drive driving lever 4 slowly to rotate, then act on the bar hole 17 on two blades 3 by the drive pin 402 at two ends on driving lever 4, make the closed slip of two blade 3 switches, thus present the diaphragm hole 2 of different size, to control different light sizes through the diaphragm hole 2 on base 1.Meanwhile, Hall element 11 responds to the different pivot angles of driving lever 4 and magnetite 7, exports corresponding feedback voltage signal, thus controls the aperture bore of different size.In addition, the effect of permanent magnetism pillar 12 is exactly make permanent magnet magnetite 7 fixedly turn to side under cold state by the acting force in magnetic field, thus aperture is in closed condition under cold condition.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain of the present utility model.
Claims (9)
1. a bore is large, the electromagnetic type iris apparatus that thickness is thin, include base (1), described base (1) is provided with the diaphragm hole (2) forming light path, described base (1) is also provided with two blades (3) that can slide to change diaphragm hole (2) size in opposite direction and by from then the driving lever (4) that slides in opposite direction of drive two blades (3), it is characterized in that: described base (1) is also provided with the driving lever drive unit (5) that described driving lever (4) can be driven to rotate, described driving lever drive unit (5) includes the magnetite (7) be fixedly connected with described driving lever (4), be tied with coil to make it possible to drive (7) rotation of described magnetite thus the coil former (6) driving described driving lever (4) to rotate.
2. the electromagnetic type iris apparatus that bore is large according to claim 1, thickness is thin, it is characterized in that: described magnetite (7) is enclosed within described driving lever (4) and goes up and coordinate with driving lever (4) outer wall fixing, the axle center hole of described driving lever (4) is inserted with the locating shaft (8) that together can rotate to reduce with described driving lever (4), magnetite (7) rotation friction, and the inner top of described coil former (6) is provided with the pilot hole (9) for locating described locating shaft (8).
3. the electromagnetic type iris apparatus that bore is large according to claim 1, thickness is thin, it is characterized in that: described coil former (6) comprises the drive coil installation portion (601) for being wound around drive coil and the system for being wound around the imperial coil of system drives coil installation portion (602), described coil former (6) is also provided with multiple aperture (603), and described aperture (603) interpolation has the splicing ear (10) for being connected with external circuit by imperial to described drive coil and system coil.
4. the electromagnetic type iris apparatus that bore is large according to claim 2, thickness is thin, it is characterized in that: be respectively equipped with board in circuit board slot (604), Hall element slot (605) and magnetic post slot (606) at described coil former (6) outer wall, be inserted with flexible PCB, the Hall element (11) be electrically connected with flexible PCB in described board in circuit board slot (604), Hall element slot (605), magnetic post slot (606) respectively and described diaphragm hole (2) can be made when no power to be in the permanent magnetism pillar (12) of closed condition.
5. bore is large according to claim 2, the electromagnetic type iris apparatus that thickness is thin, it is characterized in that: described base (1) is integrally formed with mount pad (101), described driving lever (4) and driving lever drive unit (5) are located on described mount pad (101), described mount pad (101) is snapped with the two pieces of baffle plates (14) arranged in opposite directions, the semicircular indentations that two pieces of baffle plates (14) are provided with forms circular mounting hole (15) when arranging in opposite directions, described magnetite (7) and coil former (6) to be located in described mounting hole (15) and to stretch out mounting hole (15), described mounting hole (15) passing hole inwall card has the bell housing (16) be enclosed within described coil former (6).
6. the electromagnetic type iris apparatus that bore is large according to claim 5, thickness is thin, it is characterized in that: described coil former (6) covers on described magnetite (7), described coil former (6) bottom is provided with snapping and is fixed on button pin (607) in described baffle plate (14), go back buckle in described base (1) and have the coil cap (13) coordinated with described coil former (6) bottom, described coil cap (13) is also provided with the described pilot hole (9) for locating described locating shaft (8).
7. bore is large according to claim 2, the electromagnetic type iris apparatus that thickness is thin, it is characterized in that: described driving lever (4) comprises the drive pin (402) that the central authorities be fixed with described magnetite (7) inwall engage round platform (401) and are located at two ends, described base (1) is provided with for the arcuate socket (21) of described drive pin (402) insertion for limiting described driving lever (4) rotational angle, two described blades (3) are provided with and insert again to make two described blades (3) make the bar hole (17) of reverse motions for two drive pins (402) after described arcuate socket (21) stretches out.
8. the electromagnetic type iris apparatus that bore is large according to claim 1, thickness is thin, is characterized in that: the base rail (18) rubbed when being provided with on described base (1) for reducing described blade (3) motion.
9. the electromagnetic type iris apparatus that bore is large according to claim 1, thickness is thin, it is characterized in that: the lateral edges of two described blades (3) is equipped with pilot hole (19), upper corresponding being provided with of described base (1) inserts interior blade hook (20) limiting described blade (3) and slide of described pilot hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727449.8U CN204964958U (en) | 2015-09-18 | 2015-09-18 | Electromagnetic type light ring device that bore is big, thickness is thin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727449.8U CN204964958U (en) | 2015-09-18 | 2015-09-18 | Electromagnetic type light ring device that bore is big, thickness is thin |
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| Publication Number | Publication Date |
|---|---|
| CN204964958U true CN204964958U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520727449.8U Active CN204964958U (en) | 2015-09-18 | 2015-09-18 | Electromagnetic type light ring device that bore is big, thickness is thin |
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| CN (1) | CN204964958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137697A (en) * | 2015-09-18 | 2015-12-09 | 中山联合光电科技股份有限公司 | Electromagnetic aperture apparatus with large caliber and thin thickness |
-
2015
- 2015-09-18 CN CN201520727449.8U patent/CN204964958U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137697A (en) * | 2015-09-18 | 2015-12-09 | 中山联合光电科技股份有限公司 | Electromagnetic aperture apparatus with large caliber and thin thickness |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |