CN201508238U - Straight-line type variable gap mechanism - Google Patents
Straight-line type variable gap mechanism Download PDFInfo
- Publication number
- CN201508238U CN201508238U CN 200920222319 CN200920222319U CN201508238U CN 201508238 U CN201508238 U CN 201508238U CN 200920222319 CN200920222319 CN 200920222319 CN 200920222319 U CN200920222319 U CN 200920222319U CN 201508238 U CN201508238 U CN 201508238U
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- Prior art keywords
- screw
- gap
- support
- slit
- slit sheet
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- Expired - Lifetime
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Abstract
A straight-line type variable gap mechanism, relates to a gap mechanism, solving the problem in the present cylinder type gap mechanism that even though the synchronous change can be changed can be implemented, the step angle error of a stepper motor is directly reflected on the position precision of the gap, so that the high-precision requirement is difficult to be implemented. A screw pair comprising an inner screw thread and a lead screw is arranged on a slide board of a gap piece, the lower end of the lead screw is supported on a support by a bearing, the upper end of the lead screw is directly hinged with an end cap, a magnet is fixed on the slide board of the gap piece, a Hall switch is fixed on the side of the support by a screw, and a synchronous belt pulley is connected with the lower end of the lead screw by a set screw. Due to the straight line distribution of the gaps with different width, the machine precision of the gap piece is easy to be guaranteed, the drive error can result in the positional error of the gap in the height direction and has no effect on a light path, the switching process of the gap can not result in the random error of the gap position, and the repeatability is good.
Description
Technical field
The utility model belongs to optical-mechanical, relates to a kind of variable gap mechanism that is used for various spectrometers, can satisfy the entrance slit and the exit slit demand of various layouts.
Background technology
Extensively use slit mechanism in spectrometer art, for adapting to the requirement of user to spectral bandwidth, slit mechanism can the stepping adjusting stitch wide usually.In conplane situation, the rotating disc type variable gap is the mechanism that easily realizes for monochromator incident and exit slit; And for monochromator incident and exit slit not in conplane situation, realize that the synchronous variable while of slit guarantees just difficulty relatively of higher precision again.Present useful drum type brake slit mechanism, though can realize variablely synchronously, the step angle error of stepper motor will directly be reflected on the positional precision of slit, be difficult to realize high-precision requirement.
The utility model content
The purpose of this utility model is for solving the drum type brake slit mechanism of present use, though can realize variable synchronously, but the step angle error of stepper motor will directly be reflected on the positional precision of slit, be difficult to realize the problem of high-precision requirement, and a kind of straight line variable gap mechanism is provided.The utility model comprises support, slit sheet slide plate, the slit sheet, pressing plate, screw, guide rod, press torsion spring, end cap, pin, screw, screw mandrel, Hall switch, magnet, screw, bearing, holding screw and synchronous pulley, end cap is arranged on the upper end of support, end cap is fixedlyed connected with support by pin and screw, slit sheet and pressing plate are fixed on the slit sheet slide plate with screw, guide rod supports is between support and end cap, press torsion spring to be arranged on the guide rod, form screw pair by internal thread and screw mandrel on the slit sheet slide plate, the lower end of screw mandrel by bearings on support, the upper end of screw mandrel is direct and the end cap formation is hinged, magnet is fixed on the slit sheet slide plate, on the side of support, synchronous pulley is connected with the lower end of screw mandrel by holding screw Hall switch by screw retention.
The utility model is because the slit straight line distribution of different in width, the machining precision of slit sheet is guaranteed easily, in the handoff procedure, driving error is only brought the site error of slit in short transverse, and this error can not brought any influence to light path, because the slit height of slit sheet suitably is higher than the height on fixed light hurdle, so pass through the height and the invariant position of the light of slit, therefore the slit handoff procedure can not bring the stochastic error of slit location, has good repeatability.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model, and Fig. 2 is an application state synoptic diagram of the present utility model.Reference numeral 21 among the figure is synchronous pulleys of stepper motor 22, the 23rd, and stretching pulley.
Embodiment
Embodiment one: (referring to Fig. 1, Fig. 2) present embodiment comprises support 1, slit sheet slide plate 2, slit sheet 3, pressing plate 4, screw 5, guide rod 6, press torsion spring 7, end cap 8, pin 9, screw 10, screw mandrel 11, Hall switch 12, magnet 13, screw 14, bearing 15, holding screw 16 and synchronous pulley 17, end cap 8 is arranged on the upper end of support 1, end cap 8 is fixedlyed connected with support 1 by pin 9 and screw 10, slit sheet 3 and pressing plate 4 usefulness screws 5 are fixed on the slit sheet slide plate 2, guide rod 6 is supported on and plays the effect that restriction slit sheet slide plate 2 rotates between support 1 and the end cap 8, press torsion spring 7 to be arranged on the guide rod 6, press the axial and radial play between torsion spring 7 elimination slit sheet slide plates 2 and the screw mandrel 11, form screw pair by internal thread and screw mandrel 11 on the slit sheet slide plate 2, the lower end of screw mandrel 11 is supported on the support 1 by bearing 15, the upper end of screw mandrel 11 is directly hinged with copper end cap 8 formations, magnet 13 is fixed on the slit sheet slide plate 2, Hall switch 12 is fixed on the side of support 1 by screw 14, they can detect the end positions of the slit sheet slide plate 2 that magnet 13 is housed, and synchronous pulley 17 is connected by the lower end of holding screw 16 with screw mandrel 11.
Embodiment two: the Hall switch 12 of (referring to Fig. 1, Fig. 2) present embodiment is two, and other is identical with embodiment one.
Embodiment three: (referring to Fig. 2) present embodiment is an application example of straight line variable gap mechanism, and two straight line variable gap mechanisms become angle to arrange that corner dimension is any.The driven in synchronism of straight line variable gap mechanism is driven synchronously by stepper motor 22 and realizes with the synchronous pulley in 20 and two straight line variable gap mechanisms 17.The slit height difference of two straight line variable gap mechanisms, slit separation is also different, is to have realized that by the synchronous pulley 17 of the different numbers of teeth in two straight line variable gap mechanisms certain gear ratio makes the slit sheet slide plate 2 in two mechanisms move different distance thereby switch synchronously; Also can realize the scaling-based shift of two mechanisms by the different pitch of the screw mandrel in two mechanisms; If the space allows, and can be that the slit separation of two slits is identical, can reduce the part kind like this.
The utility model can be realized non-coplanar two slits interlock.The rectilinear motion of slit sheet drives the slit sheet slide plate with internal thread by screw mandrel and realizes, rotation by guide rod restriction slit sheet slide plate, eliminate axially and radial play with pressing torsion spring, screw mandrel and guide rod are installed in parallel on the support, have perforate to play the effect on light hurdle on the support, and slit height is remained unchanged, screw mandrel is by motor-driven, motor can drive two straight slit mechanisms simultaneously by band transmission synchronously, and two slit mechanisms can be two planes of any angle.On the slit sheet slide plate magnet is housed, Hall switch is housed on the support, can feed back signal to electrical system, with slit sheet position, accurate location.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. straight line variable gap mechanism, it comprises support (1), slit sheet slide plate (2), slit sheet (3), pressing plate (4), screw (5), guide rod (6), press torsion spring (7), end cap (8), pin (9), screw (10), screw mandrel (11), Hall switch (12), magnet (13), screw (14), bearing (15), holding screw (16) and synchronous pulley (17), end cap (8) is arranged on the upper end of support (1), end cap (8) is fixedlyed connected with support (1) by pin (9) and screw (10), slit sheet (3) and pressing plate (4) are fixed on the slit sheet slide plate (2) with screw (5), guide rod (6) is supported between support (1) and the end cap (8), press torsion spring (7) to be arranged on the guide rod (6), it is characterized in that: have internal thread and screw mandrel (11) to form screw pair on the slit sheet slide plate (2), the lower end of screw mandrel (11) is supported on the support (1) by bearing (15), the upper end of screw mandrel (11) is direct and end cap (8) formation is hinged, magnet (13) is fixed on the slit sheet slide plate (2), Hall switch (12) is fixed on the side of support (1) by screw (14), and synchronous pulley (17) is connected by the lower end of holding screw (16) with screw mandrel (11).
2. a kind of straight line variable gap according to claim 1 mechanism, it is characterized in that: Hall switch (12) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222319 CN201508238U (en) | 2009-09-01 | 2009-09-01 | Straight-line type variable gap mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222319 CN201508238U (en) | 2009-09-01 | 2009-09-01 | Straight-line type variable gap mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508238U true CN201508238U (en) | 2010-06-16 |
Family
ID=42469365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920222319 Expired - Lifetime CN201508238U (en) | 2009-09-01 | 2009-09-01 | Straight-line type variable gap mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201508238U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616576A (en) * | 2014-12-17 | 2015-05-13 | 成都科创佳思科技有限公司 | Slit device |
| CN107356330A (en) * | 2017-08-24 | 2017-11-17 | 中国科学院国家天文台南京天文光学技术研究所 | High-resolution spectrometer slit switches and clamp system |
| CN110285883A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of rotational electric slit |
| CN111442839A (en) * | 2020-04-10 | 2020-07-24 | 中国科学院西安光学精密机械研究所 | Device capable of switching optical slits on line |
-
2009
- 2009-09-01 CN CN 200920222319 patent/CN201508238U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616576A (en) * | 2014-12-17 | 2015-05-13 | 成都科创佳思科技有限公司 | Slit device |
| CN107356330A (en) * | 2017-08-24 | 2017-11-17 | 中国科学院国家天文台南京天文光学技术研究所 | High-resolution spectrometer slit switches and clamp system |
| CN107356330B (en) * | 2017-08-24 | 2018-09-18 | 中国科学院国家天文台南京天文光学技术研究所 | High-resolution spectrometer slit switches and clamp system |
| CN110285883A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of rotational electric slit |
| CN111442839A (en) * | 2020-04-10 | 2020-07-24 | 中国科学院西安光学精密机械研究所 | Device capable of switching optical slits on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100616 |
|
| CX01 | Expiry of patent term |