A fixing device for ensuring zero position movement of a photoelectric detector

Abstract

The utility model provides a fixing device for ensuring the zero position movement of a photoelectric detector, including a lens fixing part, a detector fixing part, a positioning cone and a first fixing bolt, wherein a first connecting column is provided on the periphery of the lens fixing part, the first connecting column is provided with a first threaded hole, the upper end of the first threaded hole is provided with a first conical inclined surface, a first connecting hole is provided on the periphery of the detector fixing part, the upper end of the first connecting hole is provided with a second conical inclined surface, the positioning cone includes a first cone located at the lower end and a second cone located at the upper end, a fixing hole is provided at the center of the positioning cone, and the first fixing bolt can be threadedly connected with the first threaded hole after passing through the fixing hole. The utility model can ensure the assembly accuracy of the lens fixing part and the detector fixing part during assembly by respectively adapting the first cone and the second cone arranged coaxially with the first conical inclined surface arranged on the lens fixing part and the second conical inclined surface arranged on the detector fixing part, and the operation is convenient, which greatly improves the assembly efficiency.

Description

Technical Field

[0001] The utility model relates to the field of infrared thermal imagers, in particular to a fixing device for ensuring zero position movement of a photoelectric detector. Background Art

[0002] Infrared thermal imaging technology is a technology that uses infrared imaging measuring instruments to "see" or "measure" the heat energy radiated by an object. Infrared rays cannot be perceived by the human eye due to their long wavelength. However, in the infrared world, as long as the temperature of an object is above absolute zero, it will radiate heat outward. Therefore, we can image it by detecting its heat. During the assembly process of the infrared thermal imager, the center of the lens and the center of the detector need to coincide accurately, otherwise it will affect the thermal imaging effect. However, the center is easily misaligned due to tolerance problems during the assembly process, and it is difficult to meet the requirement that the center of the detector and the center of the lens still maintain a small zero position movement after the movement is disassembled for secondary debugging and then reassembled.

[0003] In the prior art, there are generally three ways to connect the lens fixing part and the detector fixing part of an infrared thermal imager: 1. Directly lock with fixing screws: The lens fixing part is provided with an internal thread connecting column, and the detector fixing part is provided with a bolt through hole. When connecting, the fixing screw passes through the bolt through hole of the detector fixing part and is screwed into the internal thread connecting column of the lens fixing part to fix the lens fixing part and the detector fixing part. However, due to the large tolerance of the outer diameter of the screw, the assembly accuracy requirement cannot be met; 2. Drill holes and insert locating pins after installation: Although it can meet the assembly accuracy requirement, it is difficult to operate and requires the installed whole machine to operate, and the probability of damage to the appearance of the whole machine is high; 3. Fix with glue after installation and adjustment: Although this method can also meet the assembly requirements, the whole machine cannot be disassembled, and secondary adjustment and maintenance cannot be performed quickly and effectively. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the assembly accuracy cannot be met, the utility model provides a fixing device capable of ensuring the assembly accuracy and used for ensuring the zero position movement of the photoelectric detector.

[0005] The utility model provides a fixing device for ensuring the zero-position movement of a photoelectric detector, including a lens fixing member, a detector fixing member, a positioning cone and a first fixing bolt. The periphery of the lens fixing member is provided with two centrally symmetrical first connecting columns, the first connecting column is provided with a first threaded hole, the upper end of the first threaded hole is provided with a first conical inclined surface, the periphery of the detector fixing member is provided with a first connecting hole corresponding to the position of the first connecting column and having a diameter larger than the aperture of the first threaded hole, the upper end of the first connecting hole is provided with a second conical inclined surface, the positioning cone includes a first cone located at the lower end and adapted to the first conical inclined surface after passing through the first connecting hole, and a second cone located at the upper end and coaxially arranged with the first cone and adapted to the second conical inclined surface, an axially through fixing hole is provided at the center of the positioning cone, the diameter of the fixing hole is larger than the screw diameter of the first fixing bolt, and the first fixing bolt can be threadedly connected to the first threaded hole after passing through the fixing hole.

[0006] As a further improvement of the present invention, the fixing device for ensuring the zero position movement of the photoelectric detector also includes a second fixing bolt, two centrally symmetrical second connecting columns are also provided on the periphery of the lens fixing component, the second connecting columns are provided with second threaded holes, and the periphery of the detector fixing component is also provided with a second connecting hole corresponding to the position of the second connecting column, and the second fixing bolt can pass through the second connecting hole and be threadedly connected to the second threaded hole.

[0007] As a further improvement of the present invention, the first connecting post and the second connecting post are both integrally formed with the lens fixing member.

[0008] As a further improvement of the present invention, a circular fixing hole is provided in the center of the lens fixing piece.

[0009] As a further improvement of the present invention, a square fixing hole is provided in the center of the detector fixing piece.

[0010] As a further improvement of the present invention, the inclination angles of the first conical inclined surface and the second conical inclined surface are the same.

[0011] As a further improvement of the present invention, an annular spacing groove is provided between the first frustum and the second frustum.

[0012] The beneficial effect of the utility model is that the utility model can ensure the assembly accuracy of the lens fixing component and the detector fixing component during assembly by respectively adapting the first frustum and the second frustum coaxially arranged with the first conical inclined surface arranged on the lens fixing component and the second conical inclined surface arranged on the detector fixing component. The utility model has a simple structure, is easy to operate, and greatly improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a fixing device for ensuring zero position movement of a photoelectric detector according to the utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of a fixing device for ensuring zero position movement of a photoelectric detector according to the utility model;

[0015] Figure 3 It is a structural schematic diagram of a positioning cone of a fixing device for ensuring zero position movement of a photoelectric detector according to the utility model;

[0016] Figure 4 It is a cross-sectional view of a fixing device for ensuring zero position movement of a photoelectric detector according to the utility model;

[0017] Figure 5 yes Figure 4 A partial enlarged view of the .

[0018] Figure markings: 1-lens fixing member; 2-detector fixing member; 3-positioning cone; 4-first fixing bolt; 5-second fixing bolt; 11-first connecting column; 12-second connecting column; 13-first threaded hole; 14-circular fixing hole; 15-first conical slope; 21-first connecting hole; 22-second connecting hole; 23-square fixing hole; 24-second conical slope; 31-first cone; 32-second cone; 33-fixing hole. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation description may be based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0020] In the description of the utility model, if there is a description of quantity, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of first or second, it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] like Figures 1 to 5 As shown, the utility model discloses a fixing device for ensuring zero position movement of a photoelectric detector, comprising a lens fixing member 1, a detector fixing member 2, a positioning cone 3 and a first fixing bolt 4, wherein the periphery of the lens fixing member 1 is provided with two centrally symmetrical first connecting columns 11, the first connecting columns 11 are provided with a first threaded hole 13, the upper end of the first threaded hole 13 is provided with a first conical inclined surface 15, the periphery of the detector fixing member 2 is provided with a first connecting hole 21 corresponding to the position of the first connecting column 11 and having a diameter larger than the aperture of the first threaded hole 13, the first connecting A second conical inclined surface 24 is provided at the upper end of the connecting hole 21, and the positioning frustum 3 includes a first frustum 31 located at the lower end and adapted to the first conical inclined surface 15 after passing through the first connecting hole 21, and a second frustum 32 located at the upper end and coaxially arranged with the first frustum 31 and adapted to the second conical inclined surface 24. An axially through-going fixing hole 33 is provided at the center of the positioning frustum 3, and the diameter of the fixing hole 33 is larger than the screw diameter of the first fixing bolt 4. The first fixing bolt 4 can be threadedly connected with the first threaded hole 13 after passing through the fixing hole 33.

[0023] During assembly, the detector fixing part 2 is prevented from being placed on the lens fixing part 1, and the positioning cone 3 is placed in the first connecting hole 21 of the detector fixing part 2, and then the first fixing bolt 4 is passed through the fixing hole 33 and threadedly connected with the first threaded hole 13. At this time, the hypotenuses of the first cone 31 and the second cone 32 of the positioning cone 3 are respectively fitted with the side walls of the first conical inclined surface 15 and the second conical inclined surface 24 of the lens fixing part 1. Due to the inclined surface matching, during the process of tightening the first fixing bolt 4, the positioning cone 3 will effectively fix the relative positions of the detector fixing part 2 and the lens fixing part 1, thereby greatly improving the assembly accuracy, and the assembly accuracy will not be affected even if a secondary disassembly and assembly is performed.

[0024] In the present utility model, the fixing device for ensuring the zero position movement of the photoelectric detector also includes a second fixing bolt 5, and the periphery of the lens fixing member 1 is also provided with two centrally symmetrical second connecting columns 12, and the second connecting columns 12 are provided with second threaded holes, and the periphery of the detector fixing member 2 is also provided with a second connecting hole 22 corresponding to the position of the second connecting column 12, and the second fixing bolt 5 can pass through the second connecting hole 22 and be threadedly connected with the second threaded hole. The second fixing bolt 5 is provided to further ensure the fixing effect of the lens fixing member 1 and the detector fixing member 2.

[0025] In the present invention, the first connecting post 11 and the second connecting post 12 are integrally formed with the lens fixing member 1 , thereby ensuring the connection strength and facilitating manufacturing.

[0026] In the utility model, a circular fixing hole 14 for connecting with the lens assembly is provided at the center of the lens fixing member 1 .

[0027] In the utility model, a square fixing hole 23 for connecting with the movement is provided at the center of the detector fixing member 2 .

[0028] In the present invention, the first conical inclined surface 15 and the second conical inclined surface 24 have the same inclination angle, which is convenient for processing.

[0029] In the present invention, an annular spacing groove is provided between the first frustum 31 and the second frustum 32 to facilitate processing.

[0030] The utility model can ensure the assembly accuracy of the lens fixing member 1 and the detector fixing member 2 during assembly by coaxially arranged first cone 31 and second cone 32, which are respectively adapted to the first conical inclined surface 15 arranged on the lens fixing member 1 and the second conical inclined surface 24 arranged on the detector fixing member 2. It has a simple structure, is easy to operate, and greatly improves the assembly efficiency.

[0031] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A fixing device for ensuring zero position movement of a photoelectric detector, characterized in that: It includes a lens fixing part, a detector fixing part, a positioning cone and a first fixing bolt, the periphery of the lens fixing part is provided with two centrally symmetrical first connecting columns, the first connecting column is provided with a first threaded hole, the upper end of the first threaded hole is provided with a first conical inclined surface, the periphery of the detector fixing part is provided with a first connecting hole corresponding to the position of the first connecting column and having a diameter larger than the aperture of the first threaded hole, the upper end of the first connecting hole is provided with a second conical inclined surface, the positioning cone includes a first cone located at the lower end and adapted to the first conical inclined surface after passing through the first connecting hole, and a second cone located at the upper end and coaxially arranged with the first cone and adapted to the second conical inclined surface, an axially through fixing hole is provided at the center of the positioning cone, the diameter of the fixing hole is larger than the screw diameter of the first fixing bolt, and the first fixing bolt can be threadedly connected to the first threaded hole after passing through the fixing hole.

2. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 1, characterized in that: The fixing device for ensuring the zero position movement of the photoelectric detector also includes a second fixing bolt. Two centrally symmetrical second connecting columns are also provided on the periphery of the lens fixing component. The second connecting columns are provided with second threaded holes. The periphery of the detector fixing component is also provided with a second connecting hole corresponding to the position of the second connecting column. The second fixing bolt can pass through the second connecting hole and be threadedly connected to the second threaded hole.

3. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 2, characterized in that: The first connecting post and the second connecting post are both integrally formed with the lens fixing member.

4. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 1, characterized in that: A circular fixing hole is arranged at the center of the lens fixing piece.

5. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 1, characterized in that: A square fixing hole is arranged at the center of the detector fixing piece.

6. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 1, characterized in that: The first tapered slope and the second tapered slope have the same inclination angle.

7. The fixing device for ensuring zero position movement of a photoelectric detector according to claim 1, characterized in that: An annular spacing groove is provided between the first frustum and the second frustum.

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