CN205607415U - Photoelectric encoder - Google Patents
Photoelectric encoder Download PDFInfo
- Publication number
- CN205607415U CN205607415U CN201620228447.9U CN201620228447U CN205607415U CN 205607415 U CN205607415 U CN 205607415U CN 201620228447 U CN201620228447 U CN 201620228447U CN 205607415 U CN205607415 U CN 205607415U
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- Prior art keywords
- aperture
- photoelectric encoder
- light
- width
- grating
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Abstract
The utility model provides a photoelectric encoder, inside light source, lens, the center of placing in proper order of including of this photoelectric encoder is provided with the optics dish of rotation axis, is provided with the scale and the light receiving element that fix the grating, and its innovation point lies in: optics dish main part be rotatable disc, and disk substrate centre that this optics coiled is equipped with the central through hole, the rotation axis is through this central through hole and optics dish through connection, and disk substrate is last to be equipped with the grating and to see through the district, and the grating sees through and is equipped with the rectangular raster way in the district, and the rectangular raster says that the width from the width of one end to the other end is the linear change, one end and other end end -to -end connection that the rectangular raster was said, the width of one end is the raster width, and the other end width that is the linear change trends towards infinitely smallly. The utility model discloses can detach higher harmonic under the prerequisite that does not improve manufacturing cost, realize high -efficient, high accuracyization.
Description
Technical field
This utility model relates to encoder techniques field, particularly relates to a kind of photoelectric encoder.
Background technology
Photoelectric encoder is detection driving member displacement, the sensor of angular acceleration, can realize opto-electronic conversion.
Range of application is wide, is applied not only on elevator be additionally operable to Digit Control Machine Tool, radar, boats and ships etc., China market year
Demand is about at 300,000, and wherein elevator expense just reaches 100,000, and manufacturer of current China is less, as
Changchun optical instrument factory, astronomical instrument research center, Chinese Academy of Sciences Nanjing etc., the most only Changchun optical instrument factory tool
Having industrialized production ability, other production scale of enterprise are the most less.Photoelectric encoder market more than 50% at present
Be imported product.The photoelectric coding of the gain the national patent that Hai'an Shen Ling electrical equipment Manufacturing Co., Ltd produces
Device, material, processing technique and overall structure aspects at parts have originality, have not only filled up domestic sky
In vain, and alternative import, and with whole ladder outlet.Product capacity of resisting disturbance is strong, dependable performance, price with enter
It is less expensive that mouth product compares ratio, and therefore the market competitiveness is stronger.
Photoelectric encoder is light, mechanical, electrical integration product, is that one utilizes photoelectricity transformation principle to detect driving member
Displacement, angular velocity, the sophisticated sensor element of angular acceleration.It is by rotating shaft system, circle code-disc system, photoelectricity
System forms.General, photoelectric encoder component includes light source, slit, dynamic grating, light-receiving device, each portion
Rigging position between part, height will be absolutely accurate, as it is shown in figure 1, existing photoelectric encoder component is being adjusted
Being not affixed to together after trying to dispatch from the factory, use support to arrange light source and slit, dynamic grating is around axle sleeve, light
Device and circuit board connect, and user assembles the screw of the separation member of photoelectric encoder, light-receiving device and support and fixes post
Threaded.But, so assembling product out can incorrect relative to position, it is impossible to guarantee light source, slit,
Dynamic grating and light-receiving device on one wire, such as the height between dynamic grating and support, dynamic grating and light-receiving device it
Between height, dynamic grating is the most inaccurate in the position at center, just can will use through again debugging.Such as China
Patent (Application No.: 200810201951.X) discloses a kind of photoelectric encoder component, including being provided with light
Source, slit and screw fix the support of post, dynamic grating, light-receiving device, and light-receiving device is arranged above with circuit board, dynamic light
The centrally disposed axle sleeve of grid, described light-receiving device uses with the axle sleeve of described dynamic grating threadeds；Described light-receiving device leads to
Cross screw to fix male screw with the screw of described support and be connected.The position of described dynamic grating is by arranging dynamic grating and being subject to
The seben extracted out between light device and after installation determines.Described photoelectric encoder component is screwed in motor
On.Described photoelectric encoder component is radially fixed on motor shaft by screw.This technical scheme mainly solves
Direction is that easy for installation, time is fast, easily operates, low cost, and increase the service life aspect, it is well known that,
Connecting simply by threaded screw, effect is not the most preferable, although by by photoelectric encoder component and electricity
Arbor has carried out the coupling of installation direction, but practical effect the most superior, therefore there are to be modified
Problem.
Chinese patent (application number: 200710005925.5) discloses a kind of optical-electricity encoder (incremental encoding
Device or absolute encoder), it has relative to the mark forming compulsory figure (increment figure or simulation random figure)
Chi, can the detector of Relative Displacement, wherein, it has multiple photosensitive system, its for by described figure should
This inspection range simultaneously detected at least is split on detection direction, and detects in each detection region respectively.Should
Technical scheme proposes the addition using multiple photosensitive systems, enabling use simple small optical system and
Wide inspection range is measured by photosensitive system.But this technical scheme yet suffers from so that internal optics
Increase, and easily the dirt on scale is produced sensitive.
Therefore, still there is the assembly working with motor in existing photoelectric encoder component, common staff is not
Easily installing or just do not install at all, needing professional and precision equipment just can complete, the time is the most long,
Cost is high.Common procurement business does not possess in this condition, can bring the biggest inconvenience to user.Thus
Visible, the existing photoelectric encoder set-up time is long, operation difficulty, and cost is high, performance is improved not becomes photoelectricity
The technical bottleneck of encoder.
Utility model content
For overcoming the set-up time of photoelectric encoder present in prior art long, operation difficulty, cost is high, performance
Improving problem not, this utility model provides a kind of photoelectric encoder.
The technical solution adopted in the utility model is: a kind of photoelectric encoder, includes depending on inside this photoelectric encoder
The light source of secondary placement, lens, it is provided centrally with the optical disc of rotary shaft, is provided with the scale of fixed grating and is subject to
Optical element, its innovative point is: described optical disc main body is rotatable circular disc, the dish base centre of this optical disc
Being provided with central through hole, described rotary shaft is run through with optical disc by this central through hole and is connected, and dish base is provided with grating
Through district, grating is provided with rectangular light turnpike through in district, and rectangular light turnpike is from the width of the width of one end to the other end
Degree linearly changes；One end of rectangular light turnpike is connected with other end head and the tail, and the width of one end is raster width,
The other end width linearly changed trends towards infinitely small.
On this basis, described photoelectric encoder also includes optical imaging system, and described optical imaging system is arranged
Between scale and photo detector, this optical imaging system includes imaging len and aperture combination, and imaging len sets
It is placed in before aperture combination.
On this basis, the combination of described aperture includes the first aperture and the second aperture, the first aperture and the second aperture
On be provided with removable aperture plate, described removable aperture plate size and shape is all with aperture size mutually
Join；This first aperture and the second aperture symmetry are respectively fixedly disposed at crack both sides.
On this basis, the structure of described first aperture and the second aperture is identical, this first aperture and the second aperture
Concrete structure be: the first aperture and the second aperture all include aperture body and driving means, and driving means is installed
On aperture body, described aperture body central is provided with a loophole, and is provided with in connection moving
Dynamic aperture plate, this removable aperture plate realizes covering or opening or reduce transparent aperture of loophole.
On this basis, described driving means is to be provided with the motor of output shaft, the output shaft of this motor and aperture
Intrinsic removable aperture plate is connected, it is achieved the motion of automatic traction aperture plate.
On this basis, also include several photosensitive systems, several photosensitive systems described all with optical imagery system
System configuration side by side.
On this basis, described photosensitive system is provided with 3～5.
On this basis, described photo detector includes multiple light receiving element and light shielding part, and this light shielding part is arranged at
On light receiving element, described light receiving element is evenly distributed in the same direction and for detecting the bright of described light
Secretly, described light shielding part is used for blocking described light, controls the light and shade of light.
On this basis, described light receiving element number is 5～10.
On this basis, described light receiving element is photodiode.
Compared with prior art, the beneficial effects of the utility model are as follows:
(1) photoelectric encoder of the present utility model, optical disc main body is rotatable circular disc, the dish of this optical disc
Base centre is provided with central through hole, and rotary shaft is run through with optical disc by this central through hole and is connected, can be so that light
Disc spins works, and dish base is provided with grating and is provided with rectangular light turnpike, rectangular light through district, grating through in district
Turnpike linearly changes from the width of the width of one end to the other end；One end of rectangular light turnpike and other end head and the tail
Connecting, the width of one end is raster width, and the other end width linearly changed trends towards infinitely small, rectangular light
The particular arrangement of turnpike, can remove higher hamonic wave on the premise of not improving manufacturing cost, it is achieved efficiently,
High precision int.
(2) photoelectric encoder of the present utility model, photoelectric encoder also includes optical imaging system, and light studies
As system is arranged between scale and photo detector, effectively prevent the increase of optical system volume, improve optics and compile
Code device progress of miniaturization, and this optical imaging system include imaging len and aperture combination, imaging len arrange
Before aperture combines, simple in construction, easy for installation.
(3) photoelectric encoder of the present utility model, aperture combines and includes the first aperture and the second aperture, and first
Being provided with removable aperture plate on aperture and the second aperture, removable aperture plate size and shape is all and light
Circle size matches；This first aperture and the second aperture symmetry are respectively fixedly disposed at crack both sides, are effectively improved
The extension in the visual field on scale, and figure or the shape of picture can be maintained.
(4) photoelectric encoder of the present utility model, aperture includes aperture body and driving means, driving means
It is arranged on aperture body, aperture body central is provided with a loophole, and is provided with in connection moving
Dynamic aperture plate, this removable aperture plate realizes covering or opening or reduce transparent aperture, effectively of loophole
Maintaining image definition, driving means is to be provided with the motor of output shaft, the output shaft of this motor and aperture body
Interior removable aperture plate is connected, it is achieved the motion of automatic traction aperture plate, and automaticity improves.
(5) photoelectric encoder of the present utility model, also included photosensitive system is all arranged side by side with optical imaging system
Configuration, being preferably provided with number is 3～5, and position arrangement rationally, can improve the efficiency of signal detection, expands
The permissible range assembled.
(6) photoelectric encoder of the present utility model, photo detector includes multiple light receiving element and light shielding part,
This light shielding part is arranged on light receiving element, and light receiving element is evenly distributed in the same direction and be used for detecting institute
Stating the light and shade of light, light shielding part is used for blocking described light, controls the light and shade of light, it is ensured that light or figure
Case does not has overlapping generation in the case of staggered each other, is effectively improved picture quality.
Accompanying drawing explanation
Fig. 1 is the internal principle assumption diagram of this utility model photoelectric encoder；
Fig. 2 is this utility model photoelectric encoder optical disc structural representation；
Fig. 3 is this utility model photoelectric encoder photo detector structural representation；
Fig. 4 is this utility model photoelectric encoder iris diaphragm structure schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that this
Specific embodiment described by place, only in order to explain this utility model, is not used to limit this utility model.
This utility model relates to a kind of photoelectric encoder, as shown in Figure 1: this photoelectric encoder 111 is internal to be included
The light source 1, the lens 2 that are sequentially placed, it is provided centrally with the optical disc 3 of rotary shaft, is provided with fixed grating
Scale 4 and photo detector 7, optical disc 3 main body is rotatable circular disc, as shown in Figure 2: this optical disc 3
Dish base centre is provided with central through hole 31, and rotary shaft 32 is run through even with optical disc 3 by this central through hole 31
Connecing, dish base is provided with grating and is provided with rectangular light turnpike 33, rectangular light turnpike 33 through district, grating through in district
Linearly change from the width of the width of one end to the other end；One end of rectangular light turnpike 33 and other end head and the tail
Connecting, the width of one end is raster width, and the other end width linearly changed trends towards infinitely small.This enforcement
The optical disc structure of example can be so that optical disc rotary work, and dish base is provided with grating and passes through district through district, grating
Inside be provided with rectangular light turnpike, the particular arrangement of rectangular light turnpike, can on the premise of not improving manufacturing cost,
Remove higher hamonic wave, it is achieved efficient, high precision int.
As shown in Figure 3: the photo detector of above-mentioned the present embodiment includes multiple light receiving element 71 and light shielding part 72,
This light shielding part 72 is arranged on light receiving element, and light receiving element 71 is evenly distributed in the same direction and be used for
The light and shade of detection light, light shielding part 72 is used for shutting out the light, and controls the light and shade of light.Wherein, as preferably,
Light receiving element 71 number is 6, and light receiving element 71 is chosen as photodiode.The structure of photo detector
Arrange and can ensure that with specific configuration light or pattern do not have overlapping generation in the case of staggered each other, have
Effect improves picture quality.
As shown in Figure 1: photoelectric encoder 111 also includes optical imaging system, optical imaging system is arranged at mark
Between chi 4 and photo detector 7, this optical imaging system includes imaging len 5 and aperture combination 6, and imaging is saturating
Mirror 5 is arranged at before aperture combination 6.This utility model includes optical imaging system, be positioned in scale and
Between photo detector, can effectively prevent the increase of optical system volume, the miniaturization improving optical encoder enters
Journey, and this optical imaging system include imaging len and aperture combination, imaging len be arranged at aperture combination before,
Simple in construction, easy for installation.
As shown in Fig. 1,2,4: aperture combination 6 includes the first aperture 61 and the second aperture 62, the first aperture
61 and second are provided with removable aperture plate 614 on aperture 62, removable aperture plate 614 size with
Shape all matches with aperture size；This first aperture 61 and the second aperture 62 symmetry are respectively fixedly disposed at folder
Seam both sides.The structure of aperture combination arranges and includes the first aperture and the second aperture, is effectively improved the visual field on scale
Extension, and figure or the shape of picture can be maintained.
Concrete, as shown in Figure 4: above-mentioned first aperture 61 is identical with the structure of the second aperture 62, and this is first years old
Aperture 61 with the concrete structure of the second aperture 62 is: the first aperture 61 and the second aperture 62 all include that aperture is originally
Body 611 and driving means 612, driving means 612 is arranged on aperture body 611, in aperture body 611
Being provided with a loophole 613 in the heart, and be provided with removable aperture plate 614 in connection, this may move
Aperture plate 614 realizes covering or opening or reduce transparent aperture of loophole.Concrete, aperture includes aperture
Body and driving means, and it is provided with removable aperture plate in connection, this removable aperture plate realizes
Covering or opening or reduce transparent aperture of loophole, effectively maintains image definition, and driving means realizes automatically
Driving the motion of aperture plate, automaticity improves.
Concrete, driving means 612 is the motor being provided with output shaft 615, the output shaft of this motor and aperture
Removable aperture plate 614 in body 611 is connected, it is achieved the motion of automatic traction aperture plate.
As shown in Figure 1: preferred as the present embodiment, the structure of above-mentioned photoelectric encoder also includes 3 senses
Photosystem 8,3 photosensitive systems 8 all configure side by side with optical imaging system, and the configuration of photosensitive system can change
The efficiency of kind signal detection, expands the permissible range assembled.
Described above illustrate and describes preferred embodiment of the present utility model, as previously mentioned, it should be understood that this reality
It is not limited to form disclosed herein with novel, is not to be taken as the eliminating to other embodiments, and can use
In other combinations various, amendment and environment, and can be in utility model contemplated scope described herein, by upper
State teaching or the technology of association area or knowledge is modified.And the change that those skilled in the art are carried out and change are not
Depart from spirit and scope of the present utility model, the most all should be at the protection domain of this utility model claims
In.
Claims (10)
1. a photoelectric encoder, the internal light source (1) including being sequentially placed of this photoelectric encoder (111), lens (2), it is provided centrally with the optical disc (3) of rotary shaft, it is provided with scale (4) and the photo detector (7) of fixed grating, it is characterized in that: described optical disc (3) main body is rotatable circular disc, the dish base centre of this optical disc (3) is provided with central through hole (31), described rotary shaft (32) is run through with optical disc (3) by this central through hole (31) and is connected, dish base is provided with grating through district, grating is provided with rectangular light turnpike (33) through in district, rectangular light turnpike (33) linearly changes from the width of the width of one end to the other end；One end of rectangular light turnpike (33) is connected with other end head and the tail, and the width of one end is raster width, and the other end width linearly changed trends towards infinitely small.
Photoelectric encoder the most according to claim 1, it is characterized in that: described photoelectric encoder (111) also includes optical imaging system, described optical imaging system is arranged between scale (4) and photo detector (7), this optical imaging system includes imaging len (5) and aperture combination (6), and imaging len (5) is arranged at before aperture combination (6).
Photoelectric encoder the most according to claim 2, it is characterized in that: described aperture combination (6) includes the first aperture (61) and the second aperture (62), being provided with removable aperture plate (614) on first aperture (61) and the second aperture (62), described removable aperture plate (614) size and shape all matches with aperture size；This first aperture (61) and the second aperture (62) symmetry are respectively fixedly disposed at crack both sides.
Photoelectric encoder the most according to claim 3, it is characterized in that: described first aperture (61) is identical with the structure of the second aperture (62), this first aperture (61) with the concrete structure of the second aperture (62) is: the first aperture (61) and the second aperture (62) all include aperture body (611) and driving means (612), driving means (612) is arranged on aperture body (611), described aperture body (611) is provided with a loophole (613) in the heart, and it is provided with removable aperture plate (614) in connection, this removable aperture plate (614) realizes covering or opening or reduce transparent aperture of loophole (613).
Photoelectric encoder the most according to claim 4, it is characterized in that: described driving means (612) is the motor being provided with output shaft (615), the output shaft (615) of this motor is connected with the removable aperture plate (614) in aperture body (611), it is achieved the motion of automatic traction aperture plate.
Photoelectric encoder the most according to claim 1, it is characterised in that: also include that several photosensitive systems (8), described several photosensitive systems (8) all configure side by side with optical imaging system.
Photoelectric encoder the most according to claim 6, it is characterised in that: described photosensitive system (8) is provided with 3～5.
Photoelectric encoder the most according to claim 1, it is characterized in that: described photo detector (7) includes multiple light receiving element (71) and light shielding part (72), this light shielding part (72) is arranged on light receiving element (71), described light receiving element (71) is evenly distributed in the same direction and for detecting the light and shade of light, described light shielding part (72) is used for shutting out the light, and controls the light and shade of light.
Photoelectric encoder the most according to claim 8, it is characterised in that: described light receiving element (71) number is 5～10.
Photoelectric encoder the most according to claim 8, it is characterised in that: described light receiving element (71) is photodiode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228447.9U CN205607415U (en) | 2016-03-23 | 2016-03-23 | Photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228447.9U CN205607415U (en) | 2016-03-23 | 2016-03-23 | Photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205607415U true CN205607415U (en) | 2016-09-28 |
Family
ID=56963759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620228447.9U Expired - Fee Related CN205607415U (en) | 2016-03-23 | 2016-03-23 | Photoelectric encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205607415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651320A (en) * | 2016-03-23 | 2016-06-08 | 海安县申菱电器制造有限公司 | Photoelectric encoder |
| CN108534810A (en) * | 2018-03-07 | 2018-09-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoder and dynamic grating |
-
2016
- 2016-03-23 CN CN201620228447.9U patent/CN205607415U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651320A (en) * | 2016-03-23 | 2016-06-08 | 海安县申菱电器制造有限公司 | Photoelectric encoder |
| WO2017161905A1 (en) * | 2016-03-23 | 2017-09-28 | 海安县申菱电器制造有限公司 | Optical encoder |
| CN105651320B (en) * | 2016-03-23 | 2017-12-29 | 海安县申菱电器制造有限公司 | A kind of photoelectric encoder |
| CN108534810A (en) * | 2018-03-07 | 2018-09-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoder and dynamic grating |
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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: 20160928 Termination date: 20190323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |