Closed light sensor

Abstract

The utility model discloses a closed type light sensor, which belongs to the technical field of light sensors, and comprises a back shell, a face shell, a lens, a detection plate and a sealing ring, the back shell is concaved inwards to form an accommodating groove and a groove surrounding the accommodating groove, the sealing ring is embedded in the groove, one side of the face shell is provided with a convex ring corresponding to the groove, and the convex ring is provided with a convex surface. When the face shell is connected with the back shell in a locking mode, the protruding ring extrudes the sealing ring to seal the containing groove. According to the technical scheme, only the sealing ring is additionally arranged to achieve sealing, a protection structure does not need to be additionally arranged inside or on the periphery of an original light sensor, interference of the protection structure to light signals is eliminated, meanwhile, the structure of the light sensor is optimized, the size of the light sensor is reduced, cost is low, and disassembly and assembly are easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical sensors, and in particular relates to a sealed optical sensor. Background Art

[0002] With the continuous update and iteration of testing equipment and the continuous improvement of performance requirements, how to ensure the accuracy and reliability of electrical performance testing lies in how the electrical performance testing device can receive light-sensing signals while being isolated from interference from the external environment, and the testing device needs to be connected to the outside world through a cable.

[0003] Chinese patent publication number CN2319964Y discloses a photoelectric signal receiver that encapsulates internal electronic components by potting with glue. After potting, the internal cavity is filled with colloid. Although this eliminates interference from water and dust and achieves a waterproof and dustproof effect, the optical signal transmission loss in the colloid is large. The setting of the colloid also makes it impossible to disassemble the internal parts and the receiver shell.

[0004] CN220603694U provides a waterproof laser rangefinder, which is equipped with a waterproof protective cover on the outside of the protective shell of the laser rangefinder. The addition of multiple isolation measures results in more parts and a larger volume. The outer surface of the laser rangefinder is increased, and the amount of light reflected by its own surface increases, which also increases the interference with the light signal. In addition, the isolation structure complicates the structure and increases the difficulty of disassembly and assembly. Utility Model Content

[0005] The utility model provides a sealed optical sensor, which is used to solve the problems of severe interference with optical signals and difficulty in assembly and disassembly of the existing sealed optical sensors.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A sealed optical sensor includes a back shell, a front shell, a lens, a detection plate and a sealing ring. The back shell is concave to form a accommodating groove and a groove surrounding the accommodating groove. The sealing ring is embedded in the groove. A convex ring corresponding to the groove is provided on one side of the front shell. When the front shell is locked and connected to the back shell, the convex ring squeezes the sealing ring to seal the accommodating groove.

[0008] Specifically, the housing is provided with a window for assembling a lens for transmitting optical signals, and the detection board is provided with a photosensitive element on the surface facing the window.

[0009] Specifically, both the back shell and the front shell have a black anodized layer. The black anodized layer eliminates interference from the outer surface of the optical sensor itself on the optical signal. At the same time, the black anodized layer on the inner wall of the accommodating groove reduces interference from the inner surface of the optical sensor on the optical signal that has passed through the lens.

[0010] Specifically, the accommodating groove protrudes from the bottom of the groove to form a platform, and the detection plate is placed on the platform and is locked and connected by fixing screws, thereby reducing the distance between the detection plate and the lens.

[0011] Specifically, the back shell includes a back shell main body, a first mounting hole is provided on the shell main body at the outer periphery of the groove, and a second mounting hole is provided at a position corresponding to the first mounting hole of the face shell. The flat head screw passes through the second mounting hole and the first mounting hole in sequence to lock the back shell and the face shell together.

[0012] Specifically, mounting screws for locking the connection surface shell are respectively provided at the four corners of the back shell.

[0013] Specifically, the back shell is provided with a wire hole connected to the accommodating groove, and a circuit connector with interference fit is clamped in the wire hole. The detection board is connected to a detection board circuit, and the detection board circuit is connected to the circuit connector.

[0014] Specifically, the surface of the convex ring facing the sealing ring is a plane.

[0015] The technical solution provided by the utility model has the following advantages compared with the existing technology:

[0016] A sealing ring is used in conjunction with a locking structure between the back shell and the front shell to seal the gap. Relative to the isolation protective structure, only the sealing ring is added, and there is no need to add a protective structure inside or around the original light sensor. Therefore, the volume of the light sensor does not increase, that is, the outer surface of the light sensor does not increase, which reduces the interference of the light signal reflected by the outer surface of the light sensor itself and eliminates the influence of the protective structure on the light signal. At the same time, the structure of the light sensor is optimized, its volume is reduced, and the cost is low and it is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall structural diagram of the light sensor in this embodiment;

[0018] Figure 2 is an exploded diagram of the optical sensor in this embodiment;

[0019] Figure 3 FIG. 2 is a structural diagram of a panel of the light sensor in this embodiment.

[0020] As shown in the figure:

[0021] 10. Back shell; 11. Back shell body; 12. Accommodation groove; 13. Groove; 14. Platform; 15. Wire hole; 16. First mounting hole; 17. First locking hole; 20. Surface shell; 21. Window; 22. Convex ring; 23. Second mounting hole; 24. Second locking hole; 30. Flat head screw; 40. Lens; 50. Fixing screw; 60. Detection board; 70. Line connector; 80. Sealing ring; 90. Mounting screw. DETAILED DESCRIPTION

[0022] For ease of understanding, the sealed optical sensor is described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations and positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1 As shown, the optical sensor in this embodiment includes a back shell 10 and a front shell 20 that is locked and connected to one side of the back shell 10 by a flat head screw 30. A window 21 for assembling a lens 40 is provided in the middle of the front shell 20 for transmitting optical signals. The lens 40 is made of highly transparent quartz glass to ensure that external optical signals are transmitted with maximum losslessness. The flat head screw 30 extends outward after passing through the back shell 10 and the front shell 20. This extended portion is used to install the sealed optical sensor. The surfaces of the back shell 10, the front shell 20, and the flat head screw 30 all have a black anodized layer. The black anodized layer has anti-oxidation and anti-reflective properties, which can minimize the influence of the component itself on the detection signal when collecting optical signals.

[0026] like Figure 2As shown, the back shell 10 includes a back shell body 11, a receiving groove 12 formed by the inward concave portion of the back shell body 11 and a groove 13 surrounding the receiving groove 12, a platform 14 formed by a protrusion from the bottom of the receiving groove 12, a wire hole 15 opened at the bottom of the back shell body 11 and connected to the receiving groove 12, and four first mounting holes 16 and four first locking holes 17 provided on the shell body around the groove 13. The four first locking holes 17 are respectively located at the four corners of the back shell body 11.

[0027] Continue as Figure 2 As shown, the position of the window 21 is set corresponding to the position of the platform 14, and a detection board 60 is provided on the platform 14, which is locked and connected by a fixing screw 50. The detection board 60 is specifically a PCBA detection board, which is used to receive optical signals, convert the optical signals into recognizable and processable electrical signals, and output the electrical signals. Therefore, one side of the detection board 60 is provided with a photosensitive element for sensing the optical signal, and the surface with the photosensitive element faces the window 21; the detection board 60 is connected to a detection board circuit (not shown in the figure), and a circuit connector 70 with an interference fit therewith is clamped in the wire hole 15 to seal the wire hole 15 to achieve sealing of the accommodating groove 12. The detection board circuit is connected to the line connector 70 for transmitting electrical signals to ensure stable signal transmission while preventing external air and moisture from entering the accommodating groove 12.

[0028] like Figure 2 and Figure 3 As shown, the groove 13 is annular, and a sealing ring 80 is embedded in the groove 13. A convex ring 22 corresponding to the groove 13 is provided on one side of the face shell 20. The surface of the convex ring 22 facing the sealing ring 80 is flat. Under the action of the flat head screw 30 and the mounting screw 90, the face shell 20 is locked and connected to the back shell 10, and the convex ring 22 squeezes the sealing ring 80 to seal the accommodating groove 12.

[0029] Continue as Figure 2 and Figure 3 As shown, the face shell 20 is provided with a second mounting hole 23 at a position corresponding to the first mounting hole 16, and the flat head screw 30 passes through the second mounting hole 23 and the first mounting hole 16 in sequence to lock the back shell 10 and the face shell 20 together. The face shell 20 is provided with a raised column at a position corresponding to the first locking hole 17, and the column is provided with a second locking hole 24. The mounting screw 90 passes through the first locking hole 17 and is screwed into the second locking hole 24 to lock the face shell 20 on the back shell 10.

[0030] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some or all of the technical features therein may be replaced with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of the present invention.

Claims

1. A sealed optical sensor, characterized in that: It includes a back shell, a front shell, a lens, a detection plate and a sealing ring. The back shell is concave to form a accommodating groove and a groove surrounding the accommodating groove. A sealing ring is embedded in the groove. A convex ring corresponding to the groove is provided on one side of the front shell. When the front shell is locked and connected to the back shell, the convex ring squeezes the sealing ring to seal the accommodating groove.

2. The sealed optical sensor according to claim 1, wherein: The surface shell is provided with a window for assembling a lens for transmitting light signals, and the detection board is provided with a photosensitive element on the surface facing the window.

3. The sealed optical sensor according to claim 1, wherein: The back shell surface and the front shell surface both have a black anodized layer.

4. The sealed optical sensor according to claim 1, wherein: The accommodating groove protrudes from the bottom of the groove to form a platform, and the detection board is placed on the platform and is locked and connected by fixing screws.

5. The sealed optical sensor according to claim 1, wherein: The back shell includes a back shell main body, a first mounting hole is provided on the shell main body on the outer periphery of the groove, and a second mounting hole is provided on the face shell at a position corresponding to the first mounting hole. A flat head screw passes through the second mounting hole and the first mounting hole in sequence to lock the back shell and the face shell together.

6. The sealed optical sensor according to claim 1, wherein: Mounting screws for locking and connecting the front shell are respectively provided at the four corners of the back shell.

7. The sealed optical sensor according to claim 1, wherein: The back shell is provided with a wire hole connected to the accommodating groove, and a line connector with an interference fit is clamped in the wire hole.

8. The sealed optical sensor according to claim 1, wherein: The surface of the convex ring facing the sealing ring is a plane.

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