CN112649931B - Optical path rotary switching mechanism with rebound function - Google Patents
Optical path rotary switching mechanism with rebound function Download PDFInfo
- Publication number
- CN112649931B CN112649931B CN202011526077.4A CN202011526077A CN112649931B CN 112649931 B CN112649931 B CN 112649931B CN 202011526077 A CN202011526077 A CN 202011526077A CN 112649931 B CN112649931 B CN 112649931B
- Authority
- CN
- China
- Prior art keywords
- path switching
- optical path
- coil spring
- microswitch
- motor
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses an optical path rotary switching mechanism with a rebound function, which comprises a stepping motor, a rotating part fixing plate, a motor base, a microswitch and the like. On one hand, when a stepping motor driving circuit fails and cannot drive a stepping motor shaft to rotate, the volute spring is larger than the self-positioning torque of the stepping motor in the whole rotation range of the optical path switching lens base, so that the moment of the optical path switching lens base is applied to the optical path rotary switching mechanism by the volute spring and the optical path switching lens base rotates to a designed designated position; on the other hand, when the stepping motor works normally under the drive of the drive circuit, the stepping motor can reliably overcome the resistance moment applied to a shaft system by the volute spring, and the microswitch gear lever is contacted with the microswitch to be conducted to realize the rotation position positioning of the optical path switching lens base.
Description
Technical Field
The invention relates to the technical field of optical machine structural design, in particular to an optical path rotary switching mechanism with a rebound function.
Background
The existing rotary moving mechanism with the rebound function needs to directly connect an elastic element to a rotating shaft.
The invention aims to solve the problem that in a satellite optical remote sensing instrument, a rotary movable component with a rebound function is needed, an optical lens is supported to rotate by designing an optical path switching mechanism to play a role in switching optical paths of the instrument, one optical path in two (or more) optical paths is a necessary condition for realizing the most main function of the instrument, and a motor driving circuit has the risk of on-orbit failure, so that the most main function of the instrument cannot be realized.
Disclosure of Invention
The invention designs the performance of the driving moment and the holding moment of a stepping motor for driving the light path switching mechanism to rotate according to the driving moment and the holding moment of the stepping motor, which can not only rotate the light path switching mirror to the initial position in the power-off state of the motor, but also ensure that the motor has enough driving moment margin to rotate the light path switching mirror to enable a microswitch to be conducted and the light path switching mirror can stay at the position of a calibration light path to be held; meanwhile, the moment of the volute spiral spring is larger than the friction moment of the shaft system in the whole rotating range of the movable part, so that when the movable part is provided with a motor driving circuit and fails to drive the motor to rotate, the moment applied to the shaft system by the volute spiral spring can ensure that the light path switching mirror rotates to the initial position.
The technical scheme adopted by the invention is as follows: the utility model provides a light path rotary switching mechanism who possesses resilience function, includes step motor 1, rotating part fixed plate 2, motor cabinet 3, micro-gap switch 4, micro-gap switch shelves pole 5, light path switching mirror 6, light path switching mirror base 7, bearing frame 8, bearing frame support 9, moment test wheel 10, stopper 11, wind spring inner connecting rod 12, wind spring inner clamp plate 13, wind spring supporting seat 14, volute spiral spring 15, wind spring outer end clamp plate 16 and deep groove ball bearing 17. The motor base 3, the bearing seat support 9 and the coil spring support seat 14 are all connected with the rotating part fixing plate 2 through screws; the stepping motor 1 is connected with the motor base 3 through a screw, the light path switching mirror base 7 is connected with a shaft of the stepping motor 1 through a screw, the bearing base 8 is connected with the bearing base support 9 through a screw, and the deep groove ball bearing 17 is arranged inside the bearing base 8; one end of the optical path switching lens base 7 is supported by the stepping motor 1 shaft, and the other end is supported by the deep groove ball bearing 17; the microswitch 4 is fixed on the motor base 3 through a screw, the microswitch gear lever 5 is connected with the light path switching mirror base 7 through a screw, when the light path switching mirror base 7 rotates to the microswitch gear lever 5 to press on the microswitch 4, the rotation position of the light path switching mirror base 7 can be determined through receiving a microswitch conduction signal, namely, the positioning and the limiting of the light path switching mechanism during the anticlockwise rotation (seen from the direction of a motor shaft) are realized through the microswitch gear lever 5 and the microswitch 4; one end of a coil spring inner end connecting rod 12 is fixedly connected with the optical path switching mirror base 7, the other end of the coil spring inner end connecting rod is fixedly connected with a coil spring inner end pressing plate 13, the inner end of a volute spiral spring 15 is pressed and fixed on the coil spring inner end connecting rod 12 through the coil spring inner end pressing plate 13, the coil spring inner end connecting rod 12 extends the shaft of the optical path switching mirror base 7, and the problem that the volute spiral spring 15 cannot be directly connected to the shaft of the optical path switching mirror base 7 is solved; the outer end of the scroll spring 15 is pressed and fixed on the coil spring supporting seat 14 by a coil spring outer end pressing plate 16; the limiting block 11 made of polyimide is adhered to the coil spring supporting seat 14 through a 3M 2216 adhesive, and the limit position of rotation (viewed from the direction of a motor shaft) when the light path switching mechanism rotates clockwise can be adjusted through grinding the limiting block 11; the moment test wheel 10 is connected with the optical path switching lens base 7 through a screw, and the starting moment, the friction moment and the holding moment of the optical path switching mechanism can be tested through the suspension wire by the moment test wheel 10. The optical path switching lens 6 is fixed to the optical path switching lens holder (7) by using a 3M 2216 adhesive.
Compared with the prior art, the invention has the following effects:
(1) Aiming at the condition that the ultraviolet high-spectrum atmospheric composition detector needs to break down in a motor driving circuit, the light path switching movable component of the ultraviolet high-spectrum atmospheric composition detector ensures that the light path switching mirror stays at the position of rotating out of a main light path, and the requirement can be met by using a volute spiral spring device.
(2) According to the invention, the inner end connecting rod 12 of the coil spring connected with the optical path switching mirror base 7 is designed, so that the shaft system rotating shaft is extended, the connection and fixation of the volute spiral spring and the shaft system are more flexible and convenient, the fixation of the coil spring is more reliable, and the problem that the volute spiral spring cannot be directly fixed with the rotating shaft is solved.
(3) According to the invention, a reasonable working torque range of the volute spiral spring is designed according to the driving torque and the self-positioning torque of the stepping motor, so that a shaft system can reliably rotate to a specified position and a microswitch gear lever can be ensured to touch a microswitch to realize positioning when the motor can be normally driven by a motor driving circuit to rotate; and the spiral spring can drive the shaft system to rotate to the designed position of the main rotary light path when the stepping motor drive circuit fails and cannot drive the shaft system to rotate.
Drawings
FIG. 1 is a model assembly diagram of an optical path rotary switching mechanism;
fig. 2 is an exploded view of the optical path switching mechanism;
FIG. 3 is a view showing the operation of the spiral spring.
Wherein, each part name and theory of operation:
1 is a stepping motor;
2 is a rotating part fixing plate;
3 is a motor base;
4 is a microswitch;
5 is a microswitch gear lever;
6 is an optical path switching mirror;
7 is a light path switching lens base;
8 is a bearing seat;
9 is a bearing seat support;
10 is a torque testing wheel;
11 is a limiting block;
12 is an inner end connecting rod of the coil spring;
13 is an inner end pressing plate of the coil spring;
14 is a coil spring supporting seat;
15 is a volute spiral spring;
16 is an outer end pressing plate of the coil spring;
17 is a deep groove ball bearing.
Detailed Description
The invention is mainly characterized in that: through with the wind spring connecting rod of optical path switching microscope base, expanded the axle for the connection of wind spring and shafting adds in a flexible way, makes the optical path switching subassembly that can't directly connect volute spiral spring at the epaxial also can possess the function of kick-backing. According to the driving torque and the torque keeping performance of the motor, a volute spiral spring with a reasonable working torque range is designed, so that the volute spiral spring can reliably rotate the optical path switching mirror to a position where the most main functions of the instrument are required when the motor is in a power-off state; meanwhile, when the motor can work in a normal state, the light path switching mirror can be reliably rotated to reset or rotate the microswitch to other specified positions, and the microswitch can be electrified and kept at the position.
The operation principle of the optical path switching mirror rotation switching mechanism having the rebound function is shown in fig. 1. The device comprises a stepping motor 1, a rotating part fixing plate 2, a motor base 3, a microswitch 4, a microswitch stop lever 5, a light path switching mirror 6, a light path switching mirror base 7, a bearing base 8, a bearing base support 9, a moment testing wheel 10, a limiting block 11, a coil spring inner end connecting rod 12, a coil spring inner end pressing plate 13, a coil spring support base 14, a volute spiral spring 15, a coil spring outer end pressing plate 16 and a deep groove ball bearing 17. The motor base 3, the bearing seat support 9 and the coil spring support seat 14 are all connected with the rotating part fixing plate 2 through screws; the stepping motor 1 is connected with the motor base 3 through a screw, the light path switching mirror base 7 is connected with a shaft of the stepping motor 1 through a screw, the bearing base 8 is connected with the bearing base support 9 through a screw, and the deep groove ball bearing 17 is installed inside the bearing base 8; one end of the optical path switching mirror base 7 is supported by the stepping motor 1 shaft, and the other end is supported by the deep groove ball bearing 17; the microswitch 4 is fixed on the motor base 3 through a screw, the microswitch gear lever 5 is connected with the light path switching mirror base 7 through a screw, when the light path switching mirror base 7 rotates to the microswitch gear lever 5 to press on the microswitch 4, the rotation position of the light path switching mirror base 7 can be determined through receiving a microswitch conduction signal, namely, the positioning and the limiting of the light path switching mechanism during the anticlockwise rotation (seen from the direction of a motor shaft) are realized through the microswitch gear lever 5 and the microswitch 4; one end of a coil spring inner end connecting rod 12 is fixedly connected with the optical path switching mirror base 7, the other end of the coil spring inner end connecting rod is fixedly connected with a coil spring inner end pressing plate 13, the inner end of a volute spiral spring 15 is pressed and fixed on the coil spring inner end connecting rod 12 through the coil spring inner end pressing plate 13, the coil spring inner end connecting rod 12 extends the shaft of the optical path switching mirror base 7, and the problem that the volute spiral spring 15 cannot be directly connected to the shaft of the optical path switching mirror base 7 is solved; the outer end of the spiral spring 15 is pressed and fixed on the coil spring supporting seat 14 by a coil spring outer end pressing plate 16; a limiting block 11 made of polyimide is arranged on a coil spring supporting seat 14 through a 3M 2216 adhesive, and the limiting position of the rotation of the light path switching mechanism (viewed from the direction of a motor shaft) when the light path switching mechanism rotates clockwise can be adjusted through the coping limiting block 11; the moment test wheel 10 is connected with the optical path switching lens base 7 through a screw, and the starting moment, the friction moment and the holding moment of the optical path switching mechanism can be tested through the moment test wheel 10 by using a suspension wire.
The optical path switching mechanism is assembled as shown in fig. 2 in an exploded view.
The self-positioning moment of the stepping motor 1 is 14.7mN m, and the starting moment of the stepping motor 1 working at rated power is 73.5mN m. Preliminarily, the working torque range of the volute spiral spring is determined to be 20-34mn × m, so that the volute spiral spring 15 can drive the connecting rod 12 at the inner end of the coil spring to rotate under the power-off state of the motor, the optical path switching mirror seat 7 is led out of a main optical path, and meanwhile, the motor 1 can overcome the moment applied to a shafting by the volute spiral spring 15 to drive the optical path switching mirror seat 7 to rotate.
Obtaining the working requirement conditions of the scroll spring as shown in the table 1:
TABLE 1 scroll spring operating requirements
| Minimum working torque | Maximum working torque | Working torsion angle | End structure |
| 20mN·m | 34mN·m | 85° | Inner end movable |
The parametric volute springs shown in the tables 2 and 3 are designed according to the original conditions of the volute springs, the selected material is a stainless steel belt with the brand number of 3Cr19Ni9Mo2N, the material belongs to a mature material used in aerospace, the space environment adaptability is good, and the use conditions can be met.
TABLE 2 scroll spring Material
| Material | Material brand | Modulus of elasticity E | Thickness d | Ultimate tensile strength |
| Stainless steel band | 3Cr19Ni9Mo2N | 200GPa | 0.3mm | 1900MPa |
TABLE 3 scroll spring sizing information
| Width of cross section | Width of cross section | Inner diameter of coil spring | Outer diameter of coil spring | Pitch of | Number of coil spring turns | Spring rate of coil |
| 10mm | 0.3mm | 7mm | 25mm | 1mm | 9 | 0.1736mN*m/° |
According to the actual designed scroll spring, the working diagram of the scroll spring shown in FIG. 3 is obtained: as shown in fig. 3, the outer end of the volute spiral spring is fixed, the inner end of the volute spiral spring rotates clockwise 120 ° from the free state of the volute spiral spring to reach the working position of the main rotary light path, and a moment of about 20.8mn × m is applied to the shafting of the light path switching mechanism by applying a moment to the inner end connecting rod 12 of the volute spiral spring connected to the light path switching mirror holder 7, where the moment is greater than the self-positioning torque of the stepping motor, so that it can be ensured that the light path switching mirror holder 7 stays at the position of the main rotary light path, and the position corresponds to the position where the inner end connecting rod 12 of the volute spiral spring rotates clockwise (viewed from the motor shaft direction) and contacts with the stopper 11, that is, the limit position where the light path switching mirror holder 7 rotates clockwise (viewed from the motor shaft direction); the inner end of the volute spring 15 rotates clockwise by 81 degrees from the position of a main rotating optical path to reach the reset position of the microswitch, under the position, the volute spring 15 applies a moment of about 34.9mN m to the shafting of the optical path switching mechanism anticlockwise, the stepping motor 1 has a starting moment of 73.5mN m, and the optical path switching lens base 7 can be reliably driven to rotate so that the microswitch 4 is switched on when a driving circuit and software of the stepping motor 1 can work normally, so that the optical path switching lens base 7 can be reliably driven to touch the microswitch 4 through the lever 5 of the microswitch so that the microswitch 4 is switched on to obtain a feedback electric signal to realize positioning.
Claims (1)
1. The utility model provides an optical path rotary switching mechanism who possesses resilience function which characterized in that: the device comprises a stepping motor (1), a rotating part fixing plate (2), a motor base (3), a microswitch (4), a microswitch gear lever (5), a light path switching mirror (6), a light path switching mirror base (7), a bearing block (8), a bearing block support (9), a torque testing wheel (10), a limiting block (11), a connecting rod (12) at the inner end of a coil spring, a pressing plate (13) at the inner end of the coil spring, a coil spring supporting seat (14), a volute spiral spring (15), a pressing plate (16) at the outer end of the coil spring and a deep groove ball bearing (17); the motor base (3), the bearing seat support (9) and the coil spring support seat (14) are all connected with the rotating part fixing plate (2) through screws; the stepping motor (1) is connected with the motor base (3) through screws, the light path switching mirror base (7) is connected with a shaft of the stepping motor (1) through screws, the bearing seat (8) is connected with the bearing seat support (9) through screws, and the deep groove ball bearing (17) is installed inside the bearing seat (8); one end of the optical path switching lens seat (7) is supported by a stepping motor (1) shaft, and the other end is supported by a deep groove ball bearing (17); the microswitch (4) is fixed on the motor base (3) through a screw, the microswitch stop lever (5) is connected with the light path switching mirror base (7) through a screw, when the light path switching mirror base (7) rotates to the state that the microswitch stop lever (5) presses on the microswitch (4), the rotation position of the light path switching mirror base (7) can be determined through receiving a microswitch on signal, namely, the positioning and the limiting seen from the motor shaft direction when the light path switching mechanism rotates anticlockwise are realized through the microswitch stop lever (5) and the on microswitch (4); one end of a connecting rod (12) at the inner end of the coil spring is fixedly connected with the optical path switching mirror base (7), the other end of the connecting rod is fixedly connected with a pressing plate (13) at the inner end of the coil spring, the inner end of a volute spiral spring (15) is pressed and fixed on the connecting rod (12) at the inner end of the coil spring by the pressing plate (13) at the inner end of the coil spring, and the connecting rod (12) at the inner end of the coil spring extends the shaft of the optical path switching mirror base (7), so that the problem that the volute spiral spring (15) cannot be directly connected to the shaft of the optical path switching mirror base (7) is solved; the outer end of the scroll spring (15) is pressed and fixed on the coil spring supporting seat (14) by a coil spring outer end pressing plate (16); a limiting block (11) made of polyimide is adhered to the coil spring supporting seat (14) through a 3M 2216 adhesive, and the limiting position of the rotation of the optical path switching mechanism when the optical path switching mechanism rotates clockwise when viewed from the direction of the motor shaft can be adjusted through the grinding limiting block (11); the moment test wheel (10) is connected with the optical path switching lens base (7) through a screw, and the starting moment, the friction moment and the holding moment of the optical path switching mechanism can be tested by using a suspension wire through the moment test wheel (10); the optical path switching lens 6 is fixedly adhered to the optical path switching lens base (7) by using a 3M 2216 adhesive;
the self-positioning moment of the stepping motor (1) is 14.7mN m, the starting moment of the stepping motor (1) working under rated power is 73.5mN m, the working torque range of the scroll spring is preliminarily determined to be 20-34mN m, the scroll spring (15) can drive the inner end connecting rod (12) of the coil spring to rotate under the power-off state of the motor, the optical path switching mirror base (7) is taken out of a main optical path, and meanwhile, the motor (1) can overcome the moment applied to a shaft system by the scroll spring (15) to drive the optical path switching mirror base (7) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526077.4A CN112649931B (en) | 2020-12-22 | 2020-12-22 | Optical path rotary switching mechanism with rebound function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526077.4A CN112649931B (en) | 2020-12-22 | 2020-12-22 | Optical path rotary switching mechanism with rebound function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112649931A CN112649931A (en) | 2021-04-13 |
| CN112649931B true CN112649931B (en) | 2022-12-16 |
Family
ID=75358884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011526077.4A Active CN112649931B (en) | 2020-12-22 | 2020-12-22 | Optical path rotary switching mechanism with rebound function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112649931B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2812273Y (en) * | 2005-07-20 | 2006-08-30 | 常州市凯隆电器有限公司 | Spiral spring resetting mechanism for circuit breaker handle |
| CN108956516A (en) * | 2018-08-28 | 2018-12-07 | 中国科学院合肥物质科学研究院 | Ultraviolet EO-1 hyperion Atmospheric components survey meter path switching mechanisms |
| CN109324008A (en) * | 2018-12-03 | 2019-02-12 | 中国科学院合肥物质科学研究院 | Ultraviolet EO-1 hyperion Atmospheric components survey meter sunlight calibrates window baffle movable part |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4607160A (en) * | 1982-09-21 | 1986-08-19 | Omron Tateisi Electronics Co. | Non-contact switching device |
| JP2003241119A (en) * | 2002-02-21 | 2003-08-27 | Mitsubishi Electric Corp | Optical switch |
| TWI546570B (en) * | 2013-07-01 | 2016-08-21 | 台灣東電化股份有限公司 | Optical anti-shake apparatus with switchable light path |
| CN107526146A (en) * | 2017-07-27 | 2017-12-29 | 中国科学院长春光学精密机械与物理研究所 | Optical element switching mechanism and optical element switching method |
-
2020
- 2020-12-22 CN CN202011526077.4A patent/CN112649931B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2812273Y (en) * | 2005-07-20 | 2006-08-30 | 常州市凯隆电器有限公司 | Spiral spring resetting mechanism for circuit breaker handle |
| CN108956516A (en) * | 2018-08-28 | 2018-12-07 | 中国科学院合肥物质科学研究院 | Ultraviolet EO-1 hyperion Atmospheric components survey meter path switching mechanisms |
| CN109324008A (en) * | 2018-12-03 | 2019-02-12 | 中国科学院合肥物质科学研究院 | Ultraviolet EO-1 hyperion Atmospheric components survey meter sunlight calibrates window baffle movable part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112649931A (en) | 2021-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0615491Y2 (en) | Small motor for automobile | |
| US7514845B2 (en) | Vibrational actuator and method for driving vibrational actuator | |
| CN108317483B (en) | Focusing structure of zooming imaging lamp | |
| CN112649931B (en) | Optical path rotary switching mechanism with rebound function | |
| US7481126B2 (en) | Precision table | |
| CN117072515B (en) | Spacing adjustable telescoping device | |
| CN210879493U (en) | Screw tightening mechanism with controllable inclination angle alignment | |
| US5052119A (en) | Angular micro-positioning device | |
| US6757985B2 (en) | Precise positioning of an object | |
| CN113375234B (en) | Water fetching device and air conditioner | |
| JP5521512B2 (en) | Actuator | |
| CN2798121Y (en) | Precise switching mechanism for optical lens | |
| JP4222240B2 (en) | Control door drive | |
| CN215257363U (en) | Turning force adjusting device and X-ray machine | |
| CN217029611U (en) | Elastic clamping rotating shaft | |
| CN112032507A (en) | Electric actuator mechanism | |
| JPH08295254A (en) | Control valve that has operation threshold | |
| US7511241B1 (en) | Rotary indexing mechanism for a mechanically activated control | |
| CN217111460U (en) | Adjustable valve body fatigue test equipment | |
| CN216216311U (en) | Motor fixed through axial force bearing | |
| CN114076161B (en) | Friction moment adjusting mechanism | |
| CN216905420U (en) | Simple AFC tuning mechanism of linear accelerator | |
| CN218721092U (en) | Lamp set | |
| CN210533907U (en) | Scroll spring fatigue test device | |
| CN211929399U (en) | Electromagnetic switch for kitchen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |