A packaging structure for a photodetector

Abstract

This utility model relates to a packaging structure for a photoelectric detector, including a base, a shell, a detector body, and a drying mechanism. The shell is fixed to the top of the base with bolts, and the detector body is fixed inside the shell with a sealing frame. The drying mechanism is installed inside the shell and is used to dry the air around the detector body. Through the built-in drying mechanism, the air inside the packaging can be dried in a targeted manner, effectively absorbing moisture around the detector body and avoiding problems such as oxidation and corrosion of the photosensitive element and signal interference caused by moisture. This significantly improves the stability and service life of the detector in high humidity or temperature change scenarios. With the help of the transparent glass plate on the top of the shell, the staff can directly observe the color change of the color-changing desiccant in the release box without disassembling the packaging, and quickly determine its moisture saturation state, solving the pain point of the desiccant being hidden and difficult to monitor in traditional packaging.

Description

Technical Field

[0001] This utility model relates to the field of photodetector technology, specifically to a photodetector packaging structure. Background Technology

[0002] In the field of environmental monitoring, photoelectric detectors need to be in complex working environments for a long time. Among them, humid environment is a key issue affecting the stability and service life of the detector. For example, in the humidity monitoring scenario of food processing workshop, the workshop needs to maintain a high air humidity in order to ensure the freshness of the food. Existing photodetector packaging structures mostly achieve basic sealing only through sealing rings, lacking a targeted internal drying mechanism. Humid air easily accumulates inside the packaging, leading to problems such as oxidation and corrosion of the photosensitive elements in the detector body and signal transmission interference. Although some improved packaging has built-in desiccant, the desiccant is usually fixed in a hidden position inside the packaging, making it impossible to visually observe its moisture saturation state. It is difficult for operators to determine when to replace it. Either the dehumidification fails due to untimely replacement, or resources are wasted due to excessively frequent replacement, which causes great trouble to the long-term stable operation of the photodetector. Therefore, we need to provide a packaging structure for photodetectors. Utility Model Content

[0003] The purpose of this invention is to provide a packaging structure for a photoelectric detector. Relying on the transparent glass plate on the top of the outer shell, the operator can directly observe the color change of the color-changing desiccant in the release box without disassembling the packaging, and quickly determine its moisture absorption saturation state, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a photodetector packaging structure, comprising: The device comprises a base, a housing, a detector body, and a drying mechanism. The housing is fixed to the top of the base by bolts, the detector body is fixed inside the housing by a sealing frame, and the drying mechanism is installed inside the housing for drying the air around the detector body. The drying mechanism includes a dispensing box, a mounting sleeve, and a sleeve. The sleeve is embedded in one side of the outer shell, and the mounting sleeve is threaded onto the inner thread of the sleeve. The dispensing box for storing the color-changing desiccant is threaded onto the inner thread of the mounting sleeve.

[0005] Preferably, the surface of the dispensing box has multiple ventilation grooves distributed around it, and the opening of the dispensing box faces the mounting sleeve.

[0006] Preferably, a sealing ring is movably fitted onto the surface of the mounting sleeve. When the mounting sleeve is installed with the sleeve, the sealing ring is located between the protrusion of the sleeve and the mounting sleeve. The sealing ring is configured as a rubber ring.

[0007] Preferably, a transparent glass plate is embedded in the top of the outer shell, and the transparent glass plate is used to observe the color change of the desiccant in the dispensing box.

[0008] Preferably, an adhesive ring is provided between the base and the outer shell, and the bottom of the adhesive ring is fixed to the top of the base.

[0009] Preferably, the bolt component includes a fixing block and a bolt part. Four fixing blocks are evenly distributed on the surface of the outer shell. The bolt part is slidably installed in each of the four fixing blocks, and a threaded hole for threaded connection with the bolt part is opened in the base.

[0010] Preferably, a wire is provided on one side of the detector body, one end of the wire passes through one side of the outer shell and extends therefrom, and a sealing sleeve is provided at the connection between the wire and the outer shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a built-in drying mechanism to specifically dry the air inside the package, effectively adsorbing moisture around the detector body. This prevents photosensitive elements from oxidizing and corroding, causing signal interference, and significantly improves the stability and lifespan of the detector in high humidity or temperature variation scenarios. Thanks to the transparent glass plate on the top of the outer shell, staff can directly observe the color change of the color-changing desiccant inside the container without disassembling the package, quickly determining its moisture saturation state. This solves the pain point of traditional packaging where the desiccant is hidden and difficult to monitor. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional bottom view of the structure of this utility model; Figure 3 This is a three-dimensional sectional view of the outer shell of this utility model; Figure 4 This is an exploded perspective view of the drying mechanism of this utility model.

[0013] In the diagram: 1. Base; 2. Outer shell; 3. Detector body; 4. Drying mechanism; 41. Drop box; 42. Mounting sleeve; 43. Sleeve; 5. Vent groove; 6. Sealing ring; 7. Transparent glass plate; 8. Adhesive layer ring; 9. Bolt; 91. Fixing block; 92. Bolt part; 10. Wire; 11. Sealing sleeve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a packaging structure for a photodetector, comprising: The base 1, housing 2, detector body 3 and drying mechanism 4 are provided. The housing 2 is fixed to the top of the base 1 by bolts 9. The detector body 3 is fixed inside the housing 2 by a sealing frame. The drying mechanism 4 is installed inside the housing 2 and is used to dry the air around the detector body 3. The drying mechanism 4 includes a dispensing box 41, a mounting sleeve 42, and a sleeve 43. The sleeve 43 is embedded in one side of the outer shell 2. The mounting sleeve 42 is installed on the inner thread of the sleeve 43. The dispensing box 41 for storing color-changing desiccant is installed on the inner thread of the mounting sleeve 42. Specifically, the built-in drying mechanism 4 can specifically dry the air inside the package, effectively adsorbing moisture around the detector body 3, avoiding problems such as oxidation and corrosion of photosensitive elements and signal interference due to moisture, and significantly improving the stability and service life of the detector in high humidity or temperature change scenarios. With the help of the transparent glass plate 7 on the top of the outer shell 2, the staff can directly observe the color change of the color-changing desiccant in the delivery box 41 without disassembling the package, and quickly determine its moisture absorption saturation state, solving the pain point of the desiccant being hidden and difficult to monitor in traditional packaging.

[0016] The surface of the dispensing box 41 is surrounded by multiple ventilation grooves 5, and the opening of the dispensing box 41 faces the mounting sleeve 42. Furthermore, the venting groove 5 and the delivery box 41 are integrally formed, allowing humid air inside the outer shell 2 to enter the delivery box 41 and come into contact with the desiccant. The coordinated design of the venting groove 5 and the delivery box 41 ensures the desiccant's moisture absorption efficiency for the air inside the package, solving the problem of low dehumidification efficiency caused by insufficient moisture absorption area of ​​traditional desiccants, and further improving the stability of the drying process inside the package.

[0017] A sealing ring 6 is movably fitted onto the surface of the mounting sleeve 42. When the mounting sleeve 42 and the sleeve 43 are installed, the sealing ring 6 is located between the protrusion of the sleeve 43 and the mounting sleeve 42. The sealing ring 6 is set as a rubber ring. Specifically, the sealing ring 6 is made of nitrile rubber. When the mounting sleeve 42 and the sleeve 43 are screwed together, the sealing ring 6 is squeezed between the port of the sleeve 43 and the protrusion of the mounting sleeve 42, forming a radial seal. The synergistic effect of the sealing ring 6, the mounting sleeve 42, and the sleeve 43 can prevent external air or moisture from seeping into the interior of the outer shell 2 from the threaded connection between the mounting sleeve 42 and the sleeve 43, thus avoiding damage to the closed and dry environment inside the package. This solves the problem that the sealing of the drying mechanism 4 is prone to failure and leads to a decrease in dehumidification effect, and improves the overall sealing and moisture-proof performance of the package.

[0018] A transparent glass plate 7 is embedded in the top of the outer casing 2. The transparent glass plate 7 is used to observe the color change of the desiccant in the release box 41. It is worth noting that the transparent glass plate 7 is made of high-transmittance float glass, and its edges are sealed and fixed to the mounting groove on the top of the outer shell 2 with glass glue. The transparent glass plate 7 works in conjunction with the dispensing box 41 and the ventilation strip. The staff can observe the color change of the desiccant in the dispensing box 41 through the transparent glass plate 7 and the ventilation strip. This structure solves the problem of the desiccant being hidden in traditional packaging and its moisture absorption status being difficult to judge intuitively. The desiccant usage can be grasped without disassembling the packaging, providing a visual basis for timely replacement of the desiccant and ensuring that the inside of the packaging is always in a dry state.

[0019] An adhesive ring 8 is provided between the base 1 and the outer shell 2, and the bottom of the adhesive ring 8 is fixed to the top of the base 1. It should be noted that the adhesive ring 8 is made of elastic epoxy adhesive material, and its bottom is fixed to the top of the base 1 by adhesive bonding. When the outer shell 2 is fixed to the base 1 by the bolt 9, the adhesive ring 8 is deformed by the compression of the outer shell 2 and the base 1, filling the gap between the base 1 and the outer shell 2. The synergistic sealing of the adhesive ring 8 with the base 1 and the outer shell 2 can prevent the external humid air from seeping in from the joint between the base 1 and the outer shell 2, solving the problem that traditional bolt fixing relies solely on metal bonding for sealing and is prone to poor sealing due to processing errors. This further improves the moisture-proof performance of the bottom of the package and protects the detector body 3 from external moisture corrosion.

[0020] The bolt component 9 includes a fixing block 91 and a bolt part 92. Four fixing blocks 91 are evenly distributed on the surface of the outer shell 2. The bolt part 92 is slidably installed in each of the four fixing blocks 91, and the base 1 has a threaded hole that is threadedly connected to the bolt part 92. Furthermore, the fixing block 91 of the bolt component 9 is integrally formed with the outer shell 2 and is made of aluminum alloy; the bolt part 92 is made of carbon steel, which passes through the through hole of the fixing block 91 and is screwed into the threaded hole in the base 1; the four fixing blocks 91 are evenly distributed around the outer shell 2, and the coordinated connection of the bolt part 92 with the fixing block 91 and the base 1 can make the outer shell 2 and the base 1 bear force evenly, avoiding deformation of the outer shell 2 due to excessive local force; this connection structure solves the problem of deformation and sealing failure of the outer shell 2 caused by uneven distribution of fixing points in traditional packaging, improves the overall structural stability of the packaging, and facilitates the disassembly and assembly of the outer shell 2 and the base 1, providing convenience for subsequent detector maintenance.

[0021] A wire 10 is provided on one side of the detector body 3. One end of the wire 10 passes through one side of the outer shell 2 and extends therein. A sealing sleeve 11 is provided at the connection between the wire 10 and the outer shell 2. The sealing sleeve 11 at the connection between the wire 10 and the outer shell 2 is made of silicone rubber. The inner wall of the sealing sleeve 11 is tightly fitted with the wire 10, and the outer wall is interference-fitted with the through hole of the wire 10 in the outer shell 2. The coordinated sealing of the sealing sleeve 11, the wire 10, and the outer shell 2 can prevent external moisture from seeping into the interior of the outer shell 2 through the through hole of the wire 10, and at the same time avoid the insulation layer from being damaged due to friction between the metal edge of the wire 10 and the outer shell 2. This structure solves the problem that the traditional wire 10 is prone to sealing gaps at the through point, which leads to moisture infiltration and wear of the wire 10. It not only ensures the sealing performance, but also improves the safety and service life of the wire 10 connection.

[0022] The detector body 3 involved in this application is a photodetector, which is implemented using existing mature technology and connected to an external PLC controller and power supply. This is a conventional technical means in this field, so its specific circuit connection, control logic and working process will not be described in detail.

[0023] All threaded mounting surfaces in this application utilize a modified triangular thread with a self-locking function. The thread helix angle is designed to be 1.5°-2.5° to enhance the anti-loosening effect. After phosphating, the thread surface is coated with an 8-12μm Dacromet coating and impregnated with silicone sealant to form a sealing layer, resulting in excellent corrosion resistance. In addition, the thread can effectively expel dust, and it can still be used normally even if a small amount of dust adheres to it.

[0024] This device inserts a bolt 92 through a fixing block 91 and connects it to a threaded hole inside the outer casing 2. A rubber ring 8 is provided between the base 1 and the outer casing 2. The rubber ring 8 is deformed by the pressure of the outer casing 2, thereby improving the sealing effect. The sensor body is fixed inside the outer casing 2 by a sealing frame. It converts optical signals into electrical signals, which are transmitted through a wire 10. One end of the wire 10 passes through one side of the outer casing 2 and extends to connect with external equipment. A sealing sleeve 11 is provided at the connection between the wire 10 and the outer casing 2 to enhance the sealing effect. The desiccant that has become damp and discolored is placed into the delivery box 41. The opening of the dispensing box 41 is threaded and fixed to the mounting sleeve 42. Then, the mounting sleeve 42 with the dispensing box 41 is threaded and fixed to the sleeve 43. That is, the desiccant in the dispensing box 41 is located inside the outer shell 2. A sealing ring 6 is provided between the sleeve 43 and the mounting sleeve 42 to achieve a sealing effect. In this closed environment where the desiccant is located inside the outer shell 2, the air inside the outer shell 2 is dried. Since the top of the outer shell 2 is embedded with a transparent glass plate 7, it is convenient to observe the color change of the desiccant through the transparent glass plate 7 and the air vent 5, thereby reminding personnel to replace it. The desiccant is a color-changing silica gel desiccant.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packaging structure for a photodetector, characterized in that, include: The base (1), the outer shell (2), the detector body (3) and the drying mechanism (4) are provided. The outer shell (2) is fixed to the top of the base (1) by bolts (9). The detector body (3) is fixed inside the outer shell (2) by a sealing frame. The drying mechanism (4) is installed inside the outer shell (2) and is used to dry the air around the detector body (3). The drying mechanism (4) includes a dispensing box (41), a mounting sleeve (42) and a sleeve (43). The sleeve (43) is embedded in one side of the outer shell (2). The mounting sleeve (42) is threaded on the sleeve (43), and the dispensing box (41) for storing the color-changing desiccant is threaded on the mounting sleeve (42).

2. The packaging structure of a photodetector according to claim 1, characterized in that: The surface of the dispensing box (41) is provided with a plurality of ventilation grooves (5), and the opening of the dispensing box (41) faces the mounting sleeve (42).

3. The packaging structure of a photodetector according to claim 2, characterized in that: The mounting sleeve (42) is movably fitted with a sealing ring (6). When the mounting sleeve (42) and the sleeve (43) are installed, the sealing ring (6) is located between the protrusion of the sleeve (43) and the mounting sleeve (42). The sealing ring (6) is set as a rubber ring.

4. The packaging structure of a photodetector according to claim 1, characterized in that: The top of the outer shell (2) is embedded with a transparent glass plate (7), which is used to observe the color change of the desiccant in the delivery box (41).

5. The packaging structure of a photodetector according to claim 1, characterized in that: An adhesive ring (8) is provided between the base (1) and the outer shell (2), and the bottom of the adhesive ring (8) is fixed to the top of the base (1).

6. The packaging structure of a photodetector according to claim 1, characterized in that: The bolt component (9) includes a fixing block (91) and a bolt part (92). Four fixing blocks (91) are evenly distributed on the surface of the outer shell (2). The bolt part (92) is slidably installed in each of the four fixing blocks (91), and a threaded hole is provided in the base (1) for threaded connection with the bolt part (92).

7. The packaging structure of a photodetector according to claim 1, characterized in that: The detector body (3) has a wire (10) on one side. One end of the wire (10) passes through one side of the outer shell (2) and extends therein. A sealing sleeve (11) is provided at the connection between the wire (10) and the outer shell (2).

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