CN202854401U - Chopper with adjustable duty cycle - Google Patents
Chopper with adjustable duty cycle Download PDFInfo
- Publication number
- CN202854401U CN202854401U CN 201220613439 CN201220613439U CN202854401U CN 202854401 U CN202854401 U CN 202854401U CN 201220613439 CN201220613439 CN 201220613439 CN 201220613439 U CN201220613439 U CN 201220613439U CN 202854401 U CN202854401 U CN 202854401U
- Authority
- CN
- China
- Prior art keywords
- chopper
- wheel disc
- adjustable
- cover board
- platen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The utility model discloses a chopper with an adjustable duty cycle, which comprises a motor and chopping boards. The chopper with an adjustable duty cycle is characterized in that a wheel disc is coaxially and fixedly connected onto a driving shaft of the motor; positioning holes are uniformly distributed circumferentially on the wheel disc; a pressure disc is arranged at the outer side of the wheel disc; bulges in match with the positioning holes are arranged on the pressure disc; a fastening nut in match with the outer side thread of the driving shaft is arranged at the outer side of the pressure disc; light through holes are uniformly distributed circumferentially on the chopping boards; the two chopping boards, which are a front chopping board and a back chopping board, are stacked together and arranged between the pressure disc and the wheel disc; the chopping boards are provided with ring-shaped chutes in match with the bulges; a back cover board is connected onto the shell of the motor; a front cover board is connected onto the back cover board; the chopping boards are arranged inside the cavity between the back cover board and the front cover board; the back cover board and the front cover board are respectively provided with a through hole corresponding to the light though holes of the chopping boards. By adjusting the relative positions of the two chopping boards to enable the overlap angle of the light through holes to vary, light transmittance area varies, and the duty cycle can then be adjusted in a certain range.
Description
Technical field
The utility model relates to a kind of chopper chopper, particularly the adjustable chopper of a kind of dutycycle.
Background technology
The optics chopper is generally used for Feebleness Light Signal Examining, and by modulating carried out chopping the light by photometry, the reference voltage signal of output and light modulating signal Frequency Synchronization adopts lock-in amplifier to realize the faint light measuring system simultaneously; Adopt the chopper disk that is evenly distributed in the mechanical chopper of tradition, namely logical light equated with the time of obstructed light, the generation dutycycle is 50% modulated light signal, but in the application of some special reality, as needing to change the dutycycle of modulated light signal in the atom magnetometer, this traditional chopper can not satisfy its demand.
The utility model content
In order to satisfy the demand, the utility model provides a kind of dutycycle adjustable chopper, and dutycycle is adjustable.
The technical solution adopted in the utility model is: the chopper that a kind of dutycycle is adjustable, comprise motor and chopper blade, it is characterized in that the coaxial wheel disc that is fixedly connected with on the motor driving shaft, wheel disc is provided with circumferential equally distributed pilot hole, the wheel disc outside is provided with platen, platen is provided with the projection that cooperates with pilot hole, and the platen outside is provided with the clamp nut with driving shaft outer end threaded engagement; Chopper blade is provided with circumferential equally distributed light hole, and two chopper blades are stacked together and are arranged between platen and wheel disc, is front chopper blade and rear chopper blade, and chopper blade is provided with the ring-type chute that cooperates with projection.
Be connected with rear cowl on the described motor housing, be connected with shroud upper panel on the rear cowl, chopper blade places in the cavity between rear cowl, shroud upper panel, is respectively equipped with a through hole corresponding with the chopper blade light hole on rear cowl, the shroud upper panel; The shroud upper panel center is provided with a mounting hole.
Described mounting hole is provided with cover plate.
Described front chopper blade is provided with opening, and corresponding opening circumferentially is provided with scale mark on rear chopper blade.
Described light hole is more than two weeks.
Described platen edge is provided with the installation gap.
The utility model changes the overlapping angle of light hole by the relative position of regulating two chopper blades, glazed area is changed, thereby regulate dutycycle within the specific limits.
Description of drawings
Fig. 1 is the utility model embodiment structural representation that explodes.
Number in the figure title: 1 motor; 2 rear cowls; 3 wheel discs; 4 driving shafts; 5 rear chopper blades; 6 front chopper blades; 7 platens; 8 clamp nuts; 9 shroud upper panels; 10 pilot holes; 11 projections; 12 ring-type chutes; 13 openings; 14 scale marks.
Embodiment
The utility model embodiment as shown in Figure 1, the chopper that this dutycycle is adjustable is provided with motor 1 and chopper blade, the coaxial wheel disc 3 that is fixedly connected with on the motor driving shaft 4, wheel disc 3 is provided with three circumferential equally distributed pilot holes 10, wheel disc 3 outsides are provided with platen 7, platen 7 is provided with the projection 11 that cooperates with pilot hole 10, and platen 7 outsides are provided with the clamp nut 8 with driving shaft 4 outer end threaded engagement; Chopper blade is provided with circumferential equally distributed light hole of two weeks, two all light hole quantity are different, light hole width on the same circumference and adjacent light hole sideline spacing equate, chopper blade is provided with two, two chopper blades are stacked together, be arranged on 3 on platen 7 and wheel disc, be respectively front chopper blade 6 and rear chopper blade 5, chopper blade is provided with and the projection 11 ring-type chutes 12 that cooperate, chopper blade can be rotated in the certain angle scope, regulate the overlapping angle of light hole on two chopper blades, thereby make dutycycle interior adjustable 0 to 50%; Be connected with rear cowl 2 on the motor housing, be connected with shroud upper panel 9 on the rear cowl 2, chopper blade places in the cavity of 9 of rear cowls 2, shroud upper panel, is respectively equipped with a through hole corresponding with the chopper blade light hole on rear cowl 2, the shroud upper panel 9, is used for injecting and penetrating of light; Shroud upper panel 9 centers are provided with a mounting hole, screw clamp nut 8 when being used for regulating dutycycle; Front chopper blade 6 is provided with opening 13, is provided with pointer in mouthful, and corresponding opening circumferentially is provided with scale mark 14 on rear chopper blade 5, makes when regulating dutycycle visual.During use, regulate according to actual needs the relative position of two chopper blades, the overlapping angle of light hole is changed, obtain the dutycycle of needs, simple in structure, easy to implement.
Can be provided with cover plate on the mounting hole when the utility model is implemented, be used for protection; The platen edge is provided with the installation gap, fixing during convenient the adjustment; Light hole can be made as the above signal that is used for obtaining different frequency of two weeks.
Claims (6)
1. chopper that dutycycle is adjustable, comprise motor (1) and chopper blade, it is characterized in that the upper coaxial wheel disc (3) that is fixedly connected with of motor driving shaft (4), wheel disc (3) is provided with circumferential equally distributed pilot hole (10), wheel disc (3) outside is provided with platen (7), platen (7) is provided with the projection (11) that cooperates with pilot hole (10), and platen (7) outside is provided with the clamp nut (8) with driving shaft (4) outer end threaded engagement; Chopper blade is provided with circumferential equally distributed light hole, and two chopper blades are stacked together and are arranged between platen (7) and wheel disc (3), are front chopper blade (6) and rear chopper blade (5), and chopper blade is provided with the ring-type chute (12) that cooperates with projection (11).
2. the adjustable chopper of dutycycle according to claim 1, it is characterized in that being connected with on the described motor housing rear cowl (2), be connected with shroud upper panel (9) on the rear cowl (2), chopper blade places in the cavity between rear cowl (2), shroud upper panel (9), is respectively equipped with a through hole corresponding with the chopper blade light hole on rear cowl (2), the shroud upper panel (9); Shroud upper panel (9) center is provided with a mounting hole.
3. the adjustable chopper of dutycycle according to claim 2 is characterized in that described mounting hole is provided with cover plate.
4. the adjustable chopper of dutycycle according to claim 1 is characterized in that described front chopper blade (6) is provided with opening (13), and corresponding opening circumferentially is provided with scale mark (14) on rear chopper blade (5).
5. the adjustable chopper of dutycycle according to claim 1 is characterized in that described light hole is more than two weeks.
6. the adjustable chopper of dutycycle according to claim 1 is characterized in that described platen (7) edge is provided with the installation gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613439 CN202854401U (en) | 2012-11-20 | 2012-11-20 | Chopper with adjustable duty cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613439 CN202854401U (en) | 2012-11-20 | 2012-11-20 | Chopper with adjustable duty cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854401U true CN202854401U (en) | 2013-04-03 |
Family
ID=47985583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220613439 Expired - Fee Related CN202854401U (en) | 2012-11-20 | 2012-11-20 | Chopper with adjustable duty cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965809A (en) * | 2020-07-31 | 2020-11-20 | 电子科技大学 | Adjustable attenuator for ultraviolet/infrared/visible light full wave band |
| CN113559805A (en) * | 2021-08-24 | 2021-10-29 | 忻州师范学院 | Multi-channel photocatalytic reaction device and reaction method thereof |
-
2012
- 2012-11-20 CN CN 201220613439 patent/CN202854401U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965809A (en) * | 2020-07-31 | 2020-11-20 | 电子科技大学 | Adjustable attenuator for ultraviolet/infrared/visible light full wave band |
| CN113559805A (en) * | 2021-08-24 | 2021-10-29 | 忻州师范学院 | Multi-channel photocatalytic reaction device and reaction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model |