A spliced ​​infrared sensor

Abstract

This utility model discloses a splicing infrared sensor, including an infrared sensing end, a housing, a docking base, and a mounting post. The bottom of the mounting post is fixedly connected to the top of the docking base. The infrared sensing end is fixedly mounted on the top of the housing. The mounting post is located inside the housing. A sealing mechanism is provided on the surface of the mounting post. The sealing mechanism includes a fixing frame, and a sealing sleeve is fitted onto the inner wall of the fixing frame. The surface of the fixing frame has extrusion holes arranged in a circular array. The interior of the housing contains the same number of metal beads as the extrusion holes. By setting up a sealing mechanism, when the mounting post drives the fixing frame and sealing sleeve into the housing, the outer surface of the sealing sleeve fits against the inner wall of the housing. Then, the metal beads are extruded from the outside of the sealing sleeve into the extrusion holes, which further improves the tightness between the sealing sleeve and the fixing frame and prevents loosening.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically a splicing infrared sensor. Background Technology

[0002] An infrared sensor is a sensor that can sense infrared radiation emitted by a target and uses the physical properties of infrared radiation to make measurements. According to the detection mechanism, it can be divided into two types: photon detectors and thermal detectors.

[0003] For example, patent announcement number CN 215178176 U discloses a splicing infrared sensor. The key technical points of this sensor are: it includes an infrared sensing end, a docking base at the bottom of the infrared sensing end, a splicing port at the junction of the infrared sensing end and the docking base, a support platform, an elastic support rod on the outer wall of the support platform, and an arc-shaped locking piece at the top of the elastic support rod. This invention connects the splicing port to the interior of the docking base via a guide positioning rod, avoiding misalignment during splicing and thus increasing the speed of splicing the device. Simultaneously, the combination of guide grooves and limiting rods further improves the accuracy of splicing. The elastic support rod and arc-shaped locking piece further enhance the splicing speed, enabling the device to be both quickly spliced ​​and quickly disassembled, reducing the operational difficulty of the device.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Although this type of splicing infrared sensor can be quickly assembled and disassembled, there is no sealing device between the splicing port and the docking base during use. Such precision optoelectronic sensing devices usually need to meet a certain level of protection standards to resist environmental corrosion. Although no sealing structure is set at the factory, the airtight protection standard can be guaranteed through standardized mechanical processing. However, the airtightness index at the factory cannot be restored after secondary assembly. Furthermore, if only sealing rings are set, they are prone to loosening after repeated disassembly, which can easily cause problems such as component corrosion and reduced service life. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a splicing infrared sensor with the advantage of auxiliary sealing. This solves the problem that no sealing device is set between the splicing port and the docking base. Such precision photoelectric sensing devices usually need to meet a certain level of protection standards to resist environmental corrosion. Although no sealing structure is set at the factory, the airtight protection standard can be guaranteed by processing with uniform mechanical equipment. However, the airtightness index at the factory cannot be restored after secondary assembly. Furthermore, if only a sealing ring is set for sealing, it is easy to loosen after repeated disassembly, which can easily cause problems such as component corrosion and reduced service life.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a splicing infrared sensor, comprising an infrared sensing end, a housing, a docking base, and a mounting post, wherein the bottom of the mounting post is fixedly connected to the top of the docking base, the infrared sensing end is fixedly mounted on the top of the housing, the mounting post is located inside the housing, and a sealing mechanism is provided on the surface of the mounting post.

[0008] The sealing mechanism includes a fixing frame, the inner wall of which is fitted with a sealing sleeve, and the surface of the fixing frame is provided with extrusion holes arranged in a ring array. The interior of the outer shell is provided with the same number of metal beads as the extrusion holes.

[0009] As a preferred embodiment of this utility model, the interior of the outer shell is provided with an annular groove, the bottom of the outer shell is provided with a through groove, the outer side of the mounting post is provided with an annular frame, the surface of the annular frame is slidably connected to the inner wall of the through groove, and the surface of the metal bead is in contact with the top of the annular frame.

[0010] As a preferred embodiment of this utility model, the inner wall of the outer shell has openings arranged in a ring array, and the top of the inner wall of the ring frame has a beveled corner.

[0011] As a preferred embodiment of this utility model, the surface of the mounting column is threaded with a torsion ring, the top of the torsion ring is fixedly connected with a support plate, and the top of the support plate is in contact with the bottom of the ring frame.

[0012] As a preferred embodiment of this invention, a movable ring is fixedly connected to the inner wall of the ring frame, and an anti-jamming ring is fixedly connected to the top of the movable ring. The inner wall of the anti-jamming ring is slidably connected to the surface of the mounting column.

[0013] As a preferred embodiment of this invention, limiting plates are provided on both sides of the metal bead, the bottom of the limiting plates is fixedly connected to the top of the ring frame, and the sealing sleeve is a rubber sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting a sealing mechanism, when the mounting column drives the fixing frame and sealing sleeve into the housing, the outer surface of the sealing sleeve fits against the inner wall of the housing. Then, the metal beads are squeezed from the outside of the sealing sleeve into the extrusion hole, which can further improve the tightness between the sealing sleeve and the fixing frame and avoid loosening.

[0016] 2. This utility model, by setting an annular groove, a through groove, and an annular frame, makes the diameter of the metal ball smaller than that of the annular groove, which facilitates the movement of the metal ball. The through groove facilitates the adjustment of the annular frame to move the metal ball up and down, so that the metal ball is at the same height as the extrusion hole.

[0017] 3. By setting an opening and a beveled chamfer, when the metal bead is at the same height as the extrusion hole on the surface of the fixed frame, the beveled chamfer facilitates the metal bead to roll into the opening. At this time, the ring frame continues to rise and can extrude the metal bead, so that the metal bead is extruded into the extrusion hole through the sealing sleeve, which has an extrusion positioning effect on the sealing sleeve. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional exploded cross-sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the three-dimensional structure at point A in the middle;

[0021] Figure 4 This is a three-dimensional exploded view of the support column, outer shell, and ring frame of this utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the ring frame of this utility model.

[0023] In the diagram: 1. Infrared sensor; 2. Housing; 3. Docking base; 4. Mounting post; 5. Sealing mechanism; 51. Fixing bracket; 52. Sealing sleeve; 53. Compression hole; 54. Metal bead; 6. Annular groove; 7. Through groove; 8. Annular frame; 9. Through port; 10. Beveled chamfer; 11. Torsion ring; 12. Support plate; 13. Movable ring; 14. Anti-jamming ring; 15. Limiting plate. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 5 As shown, the present invention provides a splicing infrared sensor, including an infrared sensing end 1, a housing 2, a docking base 3 and a mounting post 4. The bottom of the mounting post 4 is fixedly connected to the top of the docking base 3. The infrared sensing end 1 is fixedly installed on the top of the housing 2. The mounting post 4 is located inside the housing 2. A sealing mechanism 5 is provided on the surface of the mounting post 4.

[0026] The sealing mechanism 5 includes a fixing frame 51, a sealing sleeve 52 is fitted on the inner wall of the fixing frame 51, and extrusion holes 53 are arranged in a ring array on the surface of the fixing frame 51. The outer shell 2 is provided with the same number of metal beads 54 as the extrusion holes 53.

[0027] The inner surface of the outer casing 2 is provided with an annular groove 6, and the bottom of the outer casing 2 is provided with a through groove 7. An annular frame 8 is provided on the outer side of the mounting post 4. The surface of the annular frame 8 is slidably connected to the inner wall of the through groove 7, and the surface of the metal bead 54 is in contact with the top of the annular frame 8.

[0028] The top of the mounting post 4 has a mounting cavity, and the infrared signal processing module is installed inside the cavity. When the mounting post 4 enters the interior of the housing 2, the surface of the sealing sleeve 52 fits against the inner wall of the housing 2, thereby sealing the gap between the top of the mounting post 4 and the top of the fixing bracket 51.

[0029] Thus, the inner wall of the outer shell 2 is provided with a ring array of openings 9, and the top of the inner wall of the ring frame 8 is provided with a beveled chamfer 10. The height of the inner wall of the opening 9 is the same as the inner diameter of the extrusion hole 53, and slightly larger than the diameter of the metal bead 54, so that the metal bead 54 can move horizontally through the opening 9 to the extrusion hole 53.

[0030] In addition, a movable ring 13 is fixedly connected to the inner wall of the ring frame 8, and an anti-jamming ring 14 is fixedly connected to the top of the movable ring 13. The inner wall of the anti-jamming ring 14 is slidably connected to the surface of the mounting column 4. When the ring frame 8 moves up and down, it can drive the movable ring 13 to slide on the surface of the mounting column 4, thereby guiding the ring frame 8. At the same time, the inner wall of the anti-jamming ring 14 is rounded to prevent the inner wall of the movable ring 13 from rubbing against the threaded groove on the surface of the mounting column 4.

[0031] Limiting plates 15 are provided on both sides of the metal bead 54. The bottom of the limiting plate 15 is fixedly connected to the top of the ring frame 8. The sealing sleeve 52 is a rubber sleeve. The limiting plate 15 can make the metal bead 54 rise and fall vertically.

[0032] The working principle and usage process of this utility model are as follows: When it is necessary to install the mounting column 4 and the outer shell 2, the mounting column 4 can be moved to the inside of the outer shell 2, and the ring frame 8 can be moved into the arc groove through the through groove 7. When the top of the mounting column 4 is in contact with the top of the inner wall of the outer shell 2, the torsion ring 11 is rotated to drive the support plate 12 to move upward, and the support plate 12 drives the ring frame 8 to move upward. At this time, the ring frame 8 drives the metal ball 54 to move upward. When the metal ball 54 is at the same horizontal height as the through groove 7, the metal ball 54 can roll along the inclined surface of the inclined chamfer 10 into the through groove 7, so that most of the metal ball 54 is inside the through groove 7. At this time, the ring frame 8 continues to move upward, which can squeeze the metal ball 54, so that the metal ball 54 is squeezed into the extrusion hole 53 through the sealing sleeve 52. The metal ball 54 drives part of the sealing sleeve 52 to be squeezed into the extrusion hole 53, thereby further improving the tightness of the connection between the sealing sleeve 52 and the fixing frame 51 and avoiding loosening.

[0033] Meanwhile, the compression effect of the metal ball 54 on the sealing sleeve 52 can achieve the splicing and positioning effect of the outer shell 2, the fixing frame 51 and the mounting column 4. When it needs to be disassembled, the torsion ring 11 is rotated in the opposite direction to drive the support plate 12 to move downward. Then, the ring frame 8 is pulled down. When the ring frame 8 no longer compresses the metal ball 54, the elasticity of the sealing sleeve 52 can push the metal ball 54 back into the annular groove 6. At this time, the compression and positioning effect on the fixing frame 51 and the mounting column 4 is released. Then, the docking base 3 is pulled down to make the mounting column 4 separate from the outer shell 2, and the disassembly can be completed. The installation and disassembly are relatively convenient, and the sealing and stability are good.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 spliced infrared sensor, comprising an infrared sensing end (1), a shell (2), a docking base (3) and a mounting column (4), characterized in that: The bottom of the mounting post (4) is fixedly connected to the top of the docking base (3), the infrared sensing end (1) is fixedly installed on the top of the outer shell (2), the mounting post (4) is located inside the outer shell (2), and a sealing mechanism (5) is provided on the surface of the mounting post (4). The sealing mechanism (5) includes a fixing frame (51), the inner wall of the fixing frame (51) is fitted with a sealing sleeve (52), the surface of the fixing frame (51) is provided with extrusion holes (53) arranged in a ring array, and the interior of the outer shell (2) is provided with the same number of metal beads (54) as the extrusion holes (53).

2. The splicing infrared sensor according to claim 1, characterized in that: The inner side of the outer shell (2) is provided with an annular groove (6), the bottom of the outer shell (2) is provided with a through groove (7), the outer side of the mounting column (4) is provided with an annular frame (8), the surface of the annular frame (8) is slidably connected to the inner wall of the through groove (7), and the surface of the metal bead (54) is in contact with the top of the annular frame (8).

3. A splicing infrared sensor according to claim 2, characterized in that: The inner wall of the outer shell (2) has openings (9) arranged in a ring array, and the top of the inner wall of the ring frame (8) has a beveled corner (10).

4. A splicing infrared sensor according to claim 2, characterized in that: The mounting post (4) is threaded with a torsion ring (11), and a support plate (12) is fixedly connected to the top of the torsion ring (11). The top of the support plate (12) is in contact with the bottom of the ring frame (8).

5. A splicing infrared sensor according to claim 2, characterized in that: The inner wall of the ring frame (8) is fixedly connected to a movable ring (13), and the top of the movable ring (13) is fixedly connected to an anti-jamming ring (14). The inner wall of the anti-jamming ring (14) is slidably connected to the surface of the mounting column (4).

6. A splicing infrared sensor according to claim 2, characterized in that: Limiting plates (15) are provided on both sides of the metal bead (54). The bottom of the limiting plate (15) is fixedly connected to the top of the ring frame (8). The sealing sleeve (52) is a rubber sleeve.

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