An integrated optoelectronic switch

Abstract

The utility model relates to integrated photoelectric switch, including casing, light emitting unit, light guide unit, a plurality of light receiving unit and PCB board. PCB board is located at casing bottom opening, light emitting unit is located on the upper surface of PCB board, is used for emitting divergent light, light guide unit is located in the casing, and is located the top of light emitting unit, is used for converting divergent light into the vertical light that is perpendicular with casing lateral wall, a plurality of light receiving unit array formula distribution is on the casing, and is located vertical light light path, and light receiving unit is used for receiving vertical light, and converts it into electric signal, a plurality of light receiving unit is connected with PCB board electricity respectively, is used for giving the external device with the pin output of electric signal on PCB board. Compared with the prior art that sets up multiple single photoelectric switch to satisfy angle detection demand, the integrated photoelectric switch provided by the utility model integrates a plurality of light receiving units through light guide unit, has the advantages such as small space occupation, low production cost.

Description

Technical Field

[0001] This utility model relates to the field of photoelectric switch technology, and in particular to an integrated photoelectric switch. Background Technology

[0002] A photointerrupter is a photoelectric sensor that detects the presence, position, and movement of an object by blocking a beam of light. Due to its high reliability, high precision, and non-contact characteristics, it can be widely used in fields such as automation control, precision instruments, and security.

[0003] When optical interrupters are used in certain fields, they need to have multi-angle detection capabilities. Currently, this is generally achieved by setting up multiple individual photoelectric switch products, but this solution takes up a lot of space and is costly.

[0004] Therefore, there is an urgent need for an integrated product with multi-angle detection capabilities to solve the technical problems of large space occupation and high manufacturing costs caused by the use of multiple individual photoelectric switches in the existing technology. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0006] To address this issue, this invention provides an integrated photoelectric switch. By setting a light guiding unit, multiple light receiving units can be integrated into one unit, thereby achieving multi-angle detection. This solves the technical problems of large space occupation and high manufacturing cost caused by using multiple individual photoelectric switches in the prior art.

[0007] An integrated photoelectric switch according to an embodiment of the present invention includes: The casing has a PCB board connected to the bottom opening. The light-emitting unit is connected to the upper surface of the PCB board and is used to emit divergent light. A light guide unit, located inside the housing and above the light-emitting unit, is used to convert the diffused light into vertical light that is perpendicular to the side wall of the housing. Multiple light-receiving units are arrayed on the housing and located in the optical path of vertical light rays. The light-receiving units are used to receive vertical light rays and convert them into electrical signals. Multiple light-receiving units are also electrically connected to the PCB board to output electrical signals from pins on the PCB board to external devices.

[0008] Furthermore, the light guide unit includes a body, a first light guide portion, and a second light guide portion; The first light guide is located at the end of the main body near the light-emitting unit, and is used to convert the divergent light emitted by the light-emitting unit into parallel light parallel to the side wall of the housing. The second light guide is located at the end of the body away from the light-emitting unit, and the second light guide is used to convert parallel light into vertical light.

[0009] Furthermore, the first light guide is a convex lens, and the light-emitting unit is located at the focal point of the convex lens; The second light guide is a polyhedral prism, and the angle between the inclined surface of the polyhedral prism and the horizontal plane is 45°. The book's main body is a cylindrical structure made of optical material, with convex lenses and polyhedral cone prisms connected to the two openings on either side of the cylindrical structure.

[0010] Furthermore, the light guide unit is characterized in that its body is made of optical material; The first and second light guide parts are directly machined on the main body.

[0011] Preferably, the first light guide is a spherical arc surface located at the end of the body, and the light-emitting unit is located at the focal point of the spherical arc surface.

[0012] Preferably, the second light guide is a polyhedral conical groove located at the end of the main body, and the number of conical surfaces of the polyhedral conical groove is adapted to the number of light-receiving units; The angle between the conical surface of the polyhedral conical groove and the horizontal plane is 45°.

[0013] Furthermore, the housing includes a first mounting portion, a second mounting portion, and a support portion; The support is vertically mounted on the PCB board; The first mounting part is connected to the support part and is parallel to the PCB board; the light guide unit is connected to the first mounting part. There are multiple second mounting parts, which are vertically mounted on the PCB board and distributed in an array on the outer periphery of the support. Multiple light-receiving units are respectively located on multiple second mounting parts.

[0014] Furthermore, the feature is that a plurality of second mounting portions are respectively spaced apart from the support portion; The support has multiple openings spaced at equal intervals around its circumference, and the position and size of the multiple openings are adapted to the position and size of the multiple light-receiving units.

[0015] One of the above technical solutions has at least the following advantages or beneficial effects: In an embodiment of this utility model, an integrated photoelectric switch is provided above the light-emitting unit. The light-guiding unit converts the divergent light emitted by the light-emitting unit into vertical light perpendicular to the sidewall of the housing, thereby changing the light propagation path. Then, the vertical light is received by multiple light-receiving units located on the outer periphery of the housing. These light-receiving units convert the received optical signal into an electrical signal, which is ultimately output to an external device via pins on a PCB board. Compared to existing technologies that use multiple individual photoelectric switches to meet angle detection requirements, the integrated photoelectric switch provided by this utility model integrates multiple light-receiving units into one unit via the light-guiding unit, offering advantages such as small footprint and low manufacturing cost. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an integrated photoelectric switch according to an embodiment of the present invention is shown; Figure 2 This invention provides a schematic diagram of the structure of the housing in an integrated photoelectric switch according to an embodiment of the present invention. Figure 3 This invention provides a schematic diagram of the structure of a light guide unit in an integrated photoelectric switch according to an embodiment of the present invention. Figure 4 A top view of an integrated photoelectric switch according to an embodiment of the present invention is shown.

[0017] [Explanation of Labels in the Attached Image] 10. Housing; 11. First mounting part; 12. Second mounting part; 13. Support part; 20. Light-emitting unit; 30. Light guide unit; 31. Body; 32. First light guide section; 33. Second light guide section; 40. Light-receiving unit; 50. PCB board; 60. Pin. Detailed Implementation

[0018] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] To address at least one of the technical problems existing in the prior art or related technologies, this utility model provides an integrated photoelectric switch with multi-angle detection function. (See attached image) Figure 1 and Figure 4 The integrated photoelectric switch specifically includes a housing 10, a light-emitting unit 20, a light-guiding unit 30, multiple light-receiving units 40, and a PCB board 50.

[0020] The PCB board 50 is located at the bottom opening of the housing 10. The light-emitting unit 20 is connected to the upper surface of the PCB board 50 and is used to emit divergent light. The light-guiding unit 30 is located inside the housing 10 and above the light-emitting unit 20. It is used to convert the divergent light into vertical light perpendicular to the side wall of the housing 10. Multiple light-receiving units 40 are arrayed on the housing 10 and located on the optical path of the vertical light. The light-receiving units 40 are used to receive the vertical light and convert it into an electrical signal. The multiple light-receiving units 40 are also electrically connected to the PCB board 50 and can output the electrical signal to an external device through the pins 60 on the PCB board 50.

[0021] Here, the light emitted by the light-emitting unit 20 is a divergent light, and the light guide unit 30 is used to change the propagation path of the light. By converting the divergent light into a vertical light, multiple light-receiving units 40 are set on the optical path of the vertical light. The multiple light-receiving units 40 are equally spaced around the light guide unit 30, so that the light emitted by the light-emitting unit 20 can radiate to the light-receiving units 40 at different angles.

[0022] When an object is placed between the light guide unit 30 and the light receiving unit 40, the light on this light path is blocked, and the corresponding light receiving unit 40 cannot receive the light, thus it cannot generate an electrical signal. There is also no electrical signal output on the corresponding pin 60, which indicates that there is an object at the light receiving unit 40 corresponding to this pin 60.

[0023] Therefore, it can be seen that the photoelectric switch in this embodiment sets up a light guide unit 30 and arranges multiple light receiving units 40 at equal intervals around the light guide unit 30. By determining whether a certain light receiving unit 40 can receive a light signal, it can be determined whether there is an object at this location, thus realizing multi-angle detection of the object.

[0024] Compared to existing technologies that use multiple individual photoelectric switches to achieve multi-angle detection, the photoelectric switch in this embodiment is an integrated product with advantages such as small size, small footprint, and high production cost. It can be widely used in equipment that requires multi-angle detection.

[0025] In this embodiment of the disclosure, see Figure 1 and Figure 3 The light guide unit 30 includes a body 31, a first light guide portion 32, and a second light guide portion 33. The first light guide portion 32 is located at the end of the body 31 near the light-emitting unit 20 and is used to convert the divergent light emitted by the light-emitting unit 20 into parallel light parallel to the sidewall of the housing 10. The second light guide portion 33 is located at the end of the body 31 away from the light-emitting unit 20 and is used to convert the parallel light into perpendicular light.

[0026] In an exemplary embodiment, the first light guide 32 is a convex lens, the second light guide 33 is a polyhedral cone prism, and the body 31 is a cylindrical structure made of optical material. The convex lens and the polyhedral cone prism are disposed at the openings on both sides of the cylindrical structure.

[0027] The light-emitting unit 20 is located at the focal point of the convex lens. Only when the light-emitting unit 20 is located at the focal point can the divergent light emitted by the light-emitting unit 20 be refracted by the convex lens and become parallel light rays.

[0028] The tip of the polyhedral prism is positioned towards the light-emitting unit 20, and the number of its inclined surfaces matches the number of multiple light-receiving units 40. The angle between each inclined surface and the plane is 45°. When parallel light rays strike the inclined surface, specular reflection occurs. Since the angle between the inclined surface and the horizontal plane is 45°, the incident angle of the parallel light rays is also 45°. After reflection by the inclined surface, the light rays become perpendicular to the side wall of the housing 10.

[0029] In other exemplary embodiments, the first light guide 32, the second light guide 33 and the body 31 are an integral structure. To ensure the refractive index of the first light guide 32 and the reflectivity of the second light guide 33, the body 31 is made of optical material, and the first light guide 32 and the second light guide 33 are directly processed on the body 31.

[0030] Correspondingly, the first light guide part 32 is a spherical arc surface provided on the body 31 near the end of the light-emitting unit 20, which is equivalent to a convex lens.

[0031] The second light guide part 33 is a polyhedral conical groove located at the end of the body 31 away from the light-emitting unit 20, which is equivalent to a polyhedral conical prism. The number of inclined surfaces of the polyhedral conical groove is matched with the number of light-receiving units 40, and the angle between the inclined surface and the horizontal plane is 45°.

[0032] Here, it can be understood that the first light guide 32 uses the principle of light refraction to refract diverging light into parallel light, and the second light guide 33 uses the principle of light reflection to convert parallel light into perpendicular light, thereby changing the propagation path of light.

[0033] In an exemplary embodiment, see Figure 1 and Figure 2 The housing 10 includes a first mounting portion 11, a second mounting portion 12, and a support portion 13. The support portion 13 is vertically mounted on the PCB board 50 and has a cylindrical structure. The first mounting portion 11 is located at the upper end of the support portion 13. The first mounting portion 11 has a plate-like structure and is parallel to the PCB board 50. The light guide unit 30 is fixedly connected to the lower surface of the first mounting portion 11.

[0034] There are multiple second mounting parts 12, which are vertically mounted on the PCB board 50 and distributed in an array on the outer periphery of the support part 13. Multiple light-receiving units 40 are respectively mounted on the second mounting parts 12.

[0035] The support part 13 is provided with multiple openings at equal intervals around its circumference. The position and size of the multiple openings are adapted to the position and size of the multiple light-receiving units 40, so that vertical light can pass through the openings and shine directly on the light-receiving unit 40.

[0036] The above describes the specific structure of the integrated photoelectric switch in this embodiment. The photoelectric switch integrates multiple light-receiving units 40 into one unit by setting a light-guiding unit 30, so that the photoelectric switch has a multi-angle detection function to meet the needs of devices with multi-angle detection requirements.

[0037] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection of components within two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An integrated photoelectric switch, characterized in that, include: The casing has a PCB board connected to the bottom opening. A light-emitting unit is connected to the upper surface of the PCB board and is used to emit divergent light. A light guide unit is disposed inside the housing and located above the light-emitting unit, for converting the divergent light into vertical light perpendicular to the side wall of the housing; Multiple light-receiving units are arrayed on the housing and located in the optical path of the vertical light rays. The light-receiving units are used to receive the vertical light rays and convert them into electrical signals. The multiple light-receiving units are also electrically connected to the PCB board, and are used to output the electrical signal from the pins on the PCB board to the external device.

2. The integrated photoelectric switch as described in claim 1, characterized in that, The light guide unit includes a body, a first light guide part, and a second light guide part; The first light guide is located at the end of the body near the light-emitting unit, and is used to convert the divergent light emitted by the light-emitting unit into parallel light parallel to the side wall of the housing; The second light guide is located at the end of the body away from the light-emitting unit, and the second light guide is used to convert the parallel light into the vertical light.

3. The integrated photoelectric switch as described in claim 2, characterized in that, The first light guide is a convex lens, and the light-emitting unit is located at the focal point of the convex lens; The second light guide is a polyhedral cone prism, and the angle between the inclined surface of the polyhedral cone prism and the horizontal plane is 45°. The main body of the book is a cylindrical structure made of optical material, and the convex lens and the polyhedral cone prism are connected to the two openings on both sides of the cylindrical structure.

4. The integrated photoelectric switch as described in claim 2, characterized in that, The body of the light guide unit is made of optical material; The first light guide portion and the second light guide portion are directly processed on the body.

5. The integrated photoelectric switch as described in claim 4, characterized in that, The first light guide is a spherical arc surface located at the end of the main body, and the light-emitting unit is located at the focal point of the spherical arc surface.

6. The integrated photoelectric switch as described in claim 4, characterized in that, The second light guide is a polyhedral conical groove located at the end of the main body, and the number of conical surfaces of the polyhedral conical groove is adapted to the number of light-receiving units; The angle between the conical surface of the polyhedral conical groove and the horizontal plane is 45°.

7. The integrated photoelectric switch as described in claim 1, characterized in that, The housing includes a first mounting part, a second mounting part, and a support part; The support portion is vertically disposed on the PCB board; The first mounting part is connected to the support part and is parallel to the PCB board; the light guide unit is connected to the first mounting part. The number of the second mounting parts is multiple, and the multiple second mounting parts are vertically disposed on the PCB board and distributed in an array on the outer periphery of the support part; The plurality of light-receiving units are respectively disposed on the plurality of second mounting portions.

8. The integrated photoelectric switch as described in claim 7, characterized in that, Multiple second mounting portions are respectively spaced apart from the support portion; The support portion is provided with multiple openings at equal intervals around its circumference, and the positions and sizes of the multiple openings are respectively adapted to the positions and sizes of the multiple light-receiving units.

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