CN210518257U - Reflection-type photoelectric switch for short-distance measurement - Google Patents
Reflection-type photoelectric switch for short-distance measurement Download PDFInfo
- Publication number
- CN210518257U CN210518257U CN201921207633.4U CN201921207633U CN210518257U CN 210518257 U CN210518257 U CN 210518257U CN 201921207633 U CN201921207633 U CN 201921207633U CN 210518257 U CN210518257 U CN 210518257U
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- China
- Prior art keywords
- light pipe
- fluorescent tube
- receiving
- photoelectric switch
- receiving light
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- 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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Abstract
The utility model discloses a short range measuring reflection photoelectric switch, by the casing, the launching fluorescent tube is constituteed with receiving fluorescent tube, the launching fluorescent tube is with receiving fluorescent tube syntropy parallel arrangement, the launching fluorescent tube forms the light beam contained angle with the axis of receiving fluorescent tube, make the launching fluorescent tube's transmission beam shine into receiving fluorescent tube through reflective energy maximum intensity, obtain the response of confirming, it is high to detect the precision, the casing is provided with the upper and lower protruding piece that is used for fixed launching fluorescent tube and receiving fluorescent tube, it can not take place the skew to ensure the light beam contained angle, high stability, and this photoelectric switch is applicable to the counting currency machine, the mahjong machine, check out test set such as medical equipment, and the steam generator is simple in structure, the production assembly is convenient.
Description
Technical Field
The utility model relates to a range finding photoelectric sensor, especially a short-range measuring reflection type photoelectric switch.
Background
The reflective photoelectric switch is a small photoelectric element, mainly composed of a transmitting light pipe and a receiving light pipe, the transmitting light pipe transmits light beam to object and reflects it to the receiving light pipe to form synchronous loop, so as to detect the object, but the light spot of the transmitting light pipe reflected light beam will gradually diffuse with the distance extension, causing the receiving light pipe to lose the sensing to the reflected light beam, thus resulting in detection error, low measurement accuracy, difference of sensing distance and weak stability.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a short-range measuring reflection-type photoelectric switch with simple structure and high detection precision.
The utility model provides a technical scheme that its technical problem adopted is:
a reflection-type photoelectric switch for short-distance measurement is composed of a casing, and a transmitting light tube and a receiving light tube which are arranged in the casing, wherein the transmitting light tube and the receiving light tube are arranged in parallel in the same direction, the axes of the transmitting light tube and the receiving light tube form a light beam included angle, the casing is provided with a pair of accommodating cavities for accommodating the transmitting light tube and the receiving light tube, the side wall of the accommodating cavity, which is far away from the axis of the casing, is provided with an upper convex part, and the side wall of the accommodating cavity is provided with a lower convex part opposite to the upper convex part.
The shell is provided with a light blocking sheet and is positioned between the transmitting light pipe and the receiving light pipe.
The top ends of the light blocking sheet, the emitting light tube and the receiving light tube are positioned on the same horizontal plane.
The front side and the rear side of the shell are provided with installation clamping feet.
The bottom surface of casing is provided with the reference column.
The included angle of the light beams ranges from 30 degrees to 35 degrees.
The utility model has the advantages that: the utility model discloses a transmitting light pipe's transmission beam shines into in the receiving light pipe through reflective energy maximum intensity, obtains definite response, and it is high to detect the precision, and the casing is provided with the upper and lower protruding piece that is used for fixed transmitting light pipe and receiving light pipe, ensures that the light beam contained angle can not take place the skew, and stability is strong, and this photoelectric switch is applicable to check out test set such as counting currency machine, mahjong machine, medical equipment, has simple structure, production assembly is convenient, detect the advantage that the precision is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without creative work belong to the scope of the present invention.
The directional or positional relationships "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., are those shown in the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.
Referring to fig. 1 to 3, a reflective photoelectric switch for close-range measurement comprises a housing 1, and an emitting light pipe 2 and a receiving light pipe 3 which are installed in the housing 1, wherein the emitting light pipe 2 and the receiving light pipe 3 are arranged in parallel in the same direction, a light beam included angle 4 is formed between the emitting light pipe 2 and the axis of the receiving light pipe 3, the light beam included angle 4 ranges from 30 degrees to 35 degrees, the reflection sensing distance can be accurately controlled to be 15-18mm, the emitting light beam of the emitting light pipe 2 can be irradiated into the receiving light pipe 3 with maximum intensity through reflection to obtain exact sensing, the detection accuracy is high, the housing 1 is provided with a pair of accommodating cavities 5 for placing the emitting light pipe 2 and the receiving light pipe 3, the side wall of the accommodating cavity 5 far away from the central axis of the housing 1 is provided with an upper convex part 6, the side wall of the accommodating cavity 5 is provided with a lower convex part 7 opposite to the upper convex, after assembly, the transmitting light pipe 2 is in contact with the upper convex part 6 and the lower convex part 7, and a gap between the transmitting light pipe 2 and the lower convex part 7 is coated with connecting glue, so that the assembly is quick and the installation is firm, a light beam included angle 4 formed by the transmitting light pipe 2 and the receiving light pipe 3 is fixed, and the assembly method of the receiving light pipe 3 is the same.
The shell 1 is provided with a light blocking sheet 8 and is positioned between the transmitting light pipe 2 and the receiving light pipe 3, and the top ends of the light blocking sheet 8, the transmitting light pipe 2 and the receiving light pipe 3 are positioned on the same horizontal plane, so that the interference of the transmitting light pipe 2 on the receiving light pipe 3 is reduced, and the false alarm rate is reduced.
The front side and the rear side of the shell 1 are provided with mounting clamping feet 9, and the bottom surface of the shell 1 is provided with a positioning column 10, so that the whole photoelectric switch can be conveniently mounted and fixed.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (6)
1. A reflective photoelectric switch for short-distance measurement comprises a shell (1), and a transmitting light pipe (2) and a receiving light pipe (3) which are arranged in the shell (1), wherein the transmitting light pipe (2) and the receiving light pipe (3) are arranged in parallel in the same direction, the reflective photoelectric switch is characterized in that a beam included angle (4) is formed between the transmitting light pipe (2) and the axis of the receiving light pipe (3), the shell (1) is provided with a pair of accommodating cavities (5) for placing the transmitting light pipe (2) and the receiving light pipe (3), the side wall of each accommodating cavity (5) far away from the central axis of the shell (1) is provided with an upper convex part (6), and the side wall of each accommodating cavity (5) is provided with a lower convex part (7) opposite to the upper convex part (6).
2. Reflective optoelectric switch for close-up measurement according to claim 1, characterized in that the housing (1) is provided with a light barrier (8) and is located between the transmitting light pipe (2) and the receiving light pipe (3).
3. Reflective optoelectronic switch for close-up measurement according to claim 2, characterized in that the tips of the light barrier (8), the emitting light pipe (2) and the receiving light pipe (3) are in the same horizontal plane.
4. A short-range measuring reflective optoelectronic switch according to claim 1, characterized in that the front and rear sides of the housing (1) are provided with mounting feet (9).
5. A close-measuring reflective optoelectronic switch according to claim 1, characterized in that the bottom surface of the housing (1) is provided with positioning posts (10).
6. A close-measuring reflective optoelectronic switch according to claim 1, wherein said included beam angle (4) is in the range of 30 ° to 35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921207633.4U CN210518257U (en) | 2019-07-29 | 2019-07-29 | Reflection-type photoelectric switch for short-distance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921207633.4U CN210518257U (en) | 2019-07-29 | 2019-07-29 | Reflection-type photoelectric switch for short-distance measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210518257U true CN210518257U (en) | 2020-05-12 |
Family
ID=70586240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921207633.4U Expired - Fee Related CN210518257U (en) | 2019-07-29 | 2019-07-29 | Reflection-type photoelectric switch for short-distance measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210518257U (en) |
-
2019
- 2019-07-29 CN CN201921207633.4U patent/CN210518257U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |