Moisture-proof mechanism for surveying instrument lens

Abstract

The utility model discloses a surveying instrument lens moistureproof mechanism, the moistureproof mechanism comprises a housing, a heating plate and a moistureproof bag, the housing is an annular structure, the housing is provided with an annular installation cavity, and the installation cavity is internally provided with the heating plate with a matched structure, so that the heating plate can heat water vapor in a lens at the inner side of the housing; a moisture-proof box is fixedly installed on the top of the shell, and a moisture-proof bag is installed in a box body of the moisture-proof box and used for absorbing evaporated water vapor. A shell on the moisture-proof mechanism seals the outer side of a lens of the surveying instrument, and meanwhile, a heating plate is mounted in the shell to heat air in the lens, so that vaporized air rises and enters a moisture-proof bag in a moisture-proof box to be adsorbed, and external humid air is prevented from entering the lens to affect use of the lens of the surveying instrument; therefore, surveying and mapping accuracy of optical elements in the surveying instrument lens is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying and mapping instruments, in particular to a moisture-proof mechanism for the lens of a surveying and mapping instrument. Background Technique

[0002] A surveying and mapping instrument is an instrument and device designed and manufactured for surveying and mapping operations, including data acquisition, processing, output, etc. It is various instruments used for measurement work in the stages of planning, design, construction, and operation management in engineering construction, such as instruments for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry. A surveying and mapping instrument is usually installed on a surveying and mapping instrument support for measurement.

[0003] The internal components of a surveying and mapping instrument are all optical and electrical components, which have high requirements for air temperature and humidity. When the humidity is too high, it will affect the measurement accuracy of the surveying and mapping instrument. Currently, the lens of a surveying and mapping instrument is not provided with a moisture-proof mechanism. When the surveying and mapping instrument is used in an environment with high temperature and humidity, a large number of water vapor molecules will enter the surveying lens, affecting the measurement accuracy of the surveying and mapping instrument. Content of the Utility Model

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a moisture-proof mechanism for the lens of a surveying and mapping instrument to solve the technical problem that the existing surveying and mapping instrument lens is not provided with a moisture-proof mechanism, so that when the surveying and mapping instrument is used in an environment with high temperature and humidity, a large number of water vapor molecules will enter the surveying lens, affecting the measurement accuracy of the surveying and mapping instrument.

[0005] According to the technical solution provided by the embodiment of the present application, a moisture-proof mechanism for the lens of a surveying and mapping instrument includes a moisture-proof mechanism. The moisture-proof mechanism is installed outside the lens of the surveying and mapping instrument body for protecting the lens from moisture.

[0006] The moisture-proof mechanism includes a housing, a heating plate, and a moisture-proof bag. The housing is a ring-shaped structure, and a ring-shaped installation cavity is provided on the housing. A heating plate with a suitable structure is installed in the installation cavity to heat the water vapor in the lens on the inner side of the housing. A moisture-proof box is fixedly installed on the top of the housing, and a moisture-proof bag is installed in the box body of the moisture-proof box for absorbing the evaporated water vapor.

[0007] Further, the moisture-proof box is an open box body, the bottom of which is connected to the inside of the housing, and a cover plate is installed at the top opening for closing the opening of the moisture-proof box.

[0008] Further, a partition is provided at the inlet of the moisture-proof box, and a plurality of air inlet holes are provided on the partition, so that the evaporated water vapor enters the moisture-proof bag through the plurality of air inlet holes.

[0009] Further, a sealing groove is provided at the front end of the surveying and mapping instrument body, and a sealing gasket is placed in the sealing groove for sealing the connection between the housing and the surveying and mapping instrument body.

[0010] Furthermore, two connection terminals and several fixing rods are also provided at the rear end of the housing, and corresponding connection ports and several fixing slots are provided on the mapping instrument body. The two connection terminals are snap-fitted onto the respective connection ports, and the several fixing rods are snap-fitted into the corresponding fixing slots.

[0011] Furthermore, the inner diameter of the housing is larger than the diameter of the lens, so that there is a gap between the lens and the housing for water vapor to evaporate and rise.

[0012] Furthermore, the inside of the moisture-proof bag uses activated carbon particles and calcium chloride particles to adsorb water vapor.

[0013] In summary, the beneficial effects of the present application are as follows: By providing a moisture-proof mechanism with a heating plate outside the lens, the housing on the moisture-proof mechanism seals the outside of the lens of the mapping instrument. At the same time, a heating plate is installed inside the housing to heat the air inside the lens, so that the vaporized air rises and enters the moisture-proof bag in the moisture-proof box for adsorption, preventing external humid air from entering the lens and affecting the use of the mapping instrument lens, thereby improving the mapping accuracy of the optical elements inside the mapping instrument lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a schematic diagram of the exploded structure of the present utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the moisture-proof mechanism of the present utility model

[0018] Reference numerals in the figures: Moisture-proof mechanism - 100, Housing - 110, Heating plate - 120, Moisture-proof bag - 130, Moisture-proof box - 140, Cover plate - 141, Partition - 142, Sealing gasket - 150, Connection terminal - 160, Fixing rod - 170, Mapping instrument body - 200, Connection port - 201, Fixing slot - 202, Lens - 300. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the related utility model and not for limiting the utility model. Additionally, it should be noted that for the sake of description, only parts related to the utility model are shown in the drawings.

[0020] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe this application in detail with reference to the drawings and in conjunction with the embodiments.

[0021] The moisture-proof mechanism for the surveying instrument lens, the structure is as Figures 1 - 3 shown, including a moisture-proof mechanism 100, which is installed outside the lens 300 of the surveying instrument body 200 for moisture protection of the lens 300; the moisture-proof mechanism 100 includes a housing 110, a heating plate 120 and a moisture-proof bag 130. The housing 110 is a ring structure, on which a ring-shaped installation cavity is provided, and a heating plate 120 with a suitable structure is installed in the installation cavity to heat the water vapor in the lens 300 on the inner side of the housing 110. And a moisture-proof box 140 is fixedly installed on the top of the housing 110, and a moisture-proof bag 130 is installed in the box body of the moisture-proof box 140 for absorbing the evaporated water vapor.

[0022] When the moisture-proof mechanism 100 protects the lens 300 installed on the surveying instrument body 200 from moisture, the lens 300 is screwed to the lens 300 installation port on the surveying instrument body 200, and the housing 110 on the moisture-proof mechanism 100 is sleeved outside the lens 300 so that the front end of the lens 300 abuts against the opening at the front end of the housing 110. At the same time, a sealing gasket 150 made of silicone material is installed in the sealing groove on the surveying instrument body 200. When the housing 110 is clamped to the surveying instrument, the sealing gasket 150 seals the connection between the housing 110 and the surveying instrument body 200 to prevent water vapor from entering the lens 300 and affecting the use of the surveying instrument lens 300. At the same time, a heating plate 120 with a suitable structure is installed in the installation cavity of the housing 110, so that the heating plate 120 is electrically connected to the module power supply on the surveying instrument body 200, so that the heating plate 120 heats the air inside the housing 110, so that the water liquid in the air vaporizes and rises, and enters the moisture-proof box 140 communicated with the top of the housing 110, so that the water vapor is adsorbed by the moisture-proof bag 130 placed in the moisture-proof box 140, so that the inside of the lens 300 is kept dry, preventing water vapor from interfering with the use of the lens 300, thereby improving the surveying accuracy of the surveying instrument lens 300.

[0023] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the moisture-proof box 140 is an open box body, its bottom is connected to the inside of the housing 110, and a cover plate 141 is installed at the opening at its top for closing the opening of the moisture-proof box 140, which is convenient for taking out the moisture-proof bag 130 that has adsorbed water vapor after opening the cover plate 141 and replacing the moisture-proof bag 130.

[0024] As a preferred embodiment, please refer to Figure 3, a partition 142 is provided at the inlet of the moisture-proof box 140, and a number of air inlet holes are provided on the partition 142 so that the evaporated water vapor enters the moisture-proof bag 130 through the number of air inlet holes.

[0025] As a preferred embodiment, please refer to Figure 1 and Figure 2 , a sealing groove is provided at the front end of the mapping instrument body 200, and a sealing gasket 150 is placed in the sealing groove for sealing the connection between the outer shell 110 and the mapping instrument body 200 to prevent water vapor in the air from entering the inside of the lens 300.

[0026] As a preferred embodiment, please refer to Figure 1 and Figure 2 , two connection terminals 160 and a number of fixing rods 170 are further provided at the rear end of the outer shell 110, and corresponding connection ports 201 and a number of fixing grooves 202 are provided on the mapping instrument body 200. The two connection terminals 160 are snapped onto the respective connection ports 201 so that the connection ports 201 are electrically connected to the module power supply on the mapping instrument body 200, thereby enabling the module power supply to provide power to the heating plate 120, and the number of fixing rods 170 are snapped into the corresponding respective fixing grooves 202 so that the outer shell 110 is fixed to the mapping instrument body 200.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the inner diameter of the outer shell 110 is larger than the diameter of the lens 300 so that there is a gap between the lens 300 and the outer shell 110 for the evaporation and rise of water vapor.

[0028] As a preferred embodiment, please refer to Figure 3 , the inside of the moisture-proof bag 130 uses activated carbon particles and calcium chloride particles to adsorb water vapor.

[0029] The working principle of the moisture-proof mechanism for the mapping instrument lens of the present utility model is:

[0030] When the moisture-proof mechanism 100 prevents moisture from the lens 300 installed on the mapping instrument body 200, the lens 300 is screwed to the lens 300 mounting port on the mapping instrument body 200. The outer shell 110 of the moisture-proof mechanism 100 is sleeved outside the lens 300, so that the front end of the lens 300 abuts against the opening at the front end of the outer shell 110. At the same time, a sealing gasket 150 made of silica gel is installed in the sealing groove on the mapping instrument body 200. When the outer shell 110 is snapped onto the mapping instrument, the sealing gasket 150 seals the connection between the outer shell 110 and the mapping instrument body 200 to prevent water vapor from entering the lens 300 and affecting the use of the mapping instrument lens 300. At the same time, a heating plate 120 with a suitable structure is installed in the installation cavity of the outer shell 110, so that the heating plate 120 is electrically connected to the module power supply on the mapping instrument body 200, so that the heating plate 120 heats the air inside the outer shell 110, so that the water liquid in the air vaporizes and rises, and enters the moisture-proof box 140 connected to the top of the outer shell 110, so that the water vapor is adsorbed by the moisture-proof package 130 placed in the moisture-proof box 140, so that the inside of the lens 300 is kept dry, preventing water vapor from interfering with the use of the lens 300, thereby improving the mapping accuracy of the mapping instrument lens 300.

[0031] The beneficial effects of the moisture-proof mechanism for the mapping instrument lens of the present utility model are as follows:

[0032] First, by setting a moisture-proof mechanism 100 with a heating plate 120 outside the lens 300, the outer shell 110 on the moisture-proof mechanism 100 seals the outside of the lens 300 of the mapping instrument. At the same time, a heating plate 120 is installed inside the outer shell 110, so that the heating plate 120 heats the air inside the lens 300, so that the vaporized air rises and enters the moisture-proof package 130 in the moisture-proof box 140 for adsorption, preventing external humid air from entering the inside of the lens 300 and affecting the use of the mapping instrument lens 300, thereby improving the mapping accuracy of the optical elements inside the mapping instrument lens 300;

[0033] Second, by setting a sealing gasket 150 made of silica gel at the connection between the moisture-proof mechanism 100 and the lens 300 and the mapping instrument body 200, the sealing gasket 150 seals the connection to prevent humid water vapor from entering the lens 300, so that the inside of the mapping instrument lens 300 is kept dry and the mapping accuracy of the mapping instrument lens 300 is improved.

[0034] The above description is only for the preferred embodiments of the present application and the description of the technical principle and other solutions. At the same time, the scope of the utility model involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features. At the same time, it should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) with similar functions disclosed in the present application.

Claims

1. The moisture-proof mechanism of the surveying instrument lens is characterized by: It comprises a moisture-proof mechanism (100), wherein the moisture-proof mechanism (100) is installed on the outside of a lens (300) of a surveying instrument body (200) and is used to protect the lens (300) from moisture; The moisture-proof mechanism (100) comprises an outer shell (110), a heating plate (120) and a moisture-proof bag (130); the outer shell (110) is an annular structure, and an annular installation cavity is provided on the outer shell (110); a heating plate (120) with a suitable structure is installed in the installation cavity, so that the plate heats the water vapor in the lens (300) inside the outer shell (110); a moisture-proof box (140) is fixedly installed on the top of the outer shell (110), and a moisture-proof bag (130) is installed in the box body of the moisture-proof box (140) for absorbing the water vapor after evaporation.

2. The moisture-proof mechanism for the surveying and mapping instrument lens according to claim 1 is characterized in that: The moisture-proof box (140) is an open box body, the bottom of which is connected to the inside of the housing (110), and a cover plate (141) is installed at the top opening to close the opening of the moisture-proof box (140).

3. The moisture-proof mechanism for the surveying and mapping instrument lens according to claim 2 is characterized in that: A partition (142) is provided at the inlet of the moisture-proof box (140), and a plurality of air inlet holes are provided on the partition (142), so that evaporated water vapor enters the moisture-proof bag (130) through the plurality of air inlet holes.

4. The moisture-proof mechanism for the surveying and mapping instrument lens according to claim 1 is characterized by: The front end of the surveying instrument body (200) is provided with a sealing groove, in which a sealing gasket (150) is placed for sealing the connection between the housing (110) and the surveying instrument body (200).

5. The moisture-proof mechanism for the surveying and mapping instrument lens according to claim 1 is characterized by: The rear end of the housing (110) is also provided with two connection terminals (160) and a plurality of fixing rods (170), and the surveying instrument body (200) is provided with corresponding connection ports (201) and a plurality of fixing grooves (202), the two connection terminals (160) are snap-fitted to each of the connection ports (201), and the plurality of fixing rods (170) are snap-fitted to each of the corresponding fixing grooves (202).

6. The moisture-proof mechanism for the surveying and mapping instrument lens according to claim 1 is characterized by: The inner diameter of the housing (110) is greater than the diameter of the lens (300), so that a gap exists between the lens (300) and the housing (110) for water vapor to evaporate and rise.

Images