An instrument with a water mist prevention function

Abstract

The present application relates to the technical field of instruments and meters, in particular to an instrument and meter with a waterproof fog function, comprising a supporting leg, an instrument lower shell, a display disc, an arc-shaped support plate group, an instrument upper shell, an instrument mirror and a defogging device, the defogging device can reciprocatingly rotate and apply hot air treatment, so that the problem of data deviation caused by the data reading error due to the water mist on the inner wall of the dial and the fuzzy display of the dial data value when the existing instrument and meter is used under the influence of the environment is solved, and the water mist can be collected and treated, so that the problem of circuit damage and the problem of the instrument and meter unable to be normally used caused by the liquid drops formed by the excessive water vapor gathered in the dial are solved.

Description

Technical Field

[0001] This invention relates to the field of instrumentation technology, specifically to an instrumentation device with anti-fog function. Background Technology

[0002] Instruments and meters are devices or equipment used to detect, measure, observe, and calculate various physical quantities, material compositions, and characteristic parameters. More broadly, instruments and meters can also have functions such as automatic control, alarm, signal transmission, and data processing. Examples include starting and regulating instruments, electric regulators, pressure gauges, microscopes, rangefinders, and multipliers used in automatic control during industrial production processes.

[0003] Currently, existing instruments and meters are prone to moisture ingress into the dial due to humid environments or large temperature differences between day and night. This causes water vapor to form on the inner wall of the dial, resulting in blurred data display. This not only affects the user's ability to read the data and causes data deviation, thus reducing the accuracy of the test results, but also causes excessive moisture to accumulate inside the dial and form droplets. These droplets can drip onto the internal circuitry, corroding the circuitry and causing short circuits, thereby affecting the normal use of the instrument and meter and making it inconvenient to use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an instrument with anti-fogging functionality. By incorporating a reciprocating defogging device below the instrument mirror and applying hot air, it solves the problem that existing instruments are prone to water fogging on the inner wall of the dial due to environmental factors, resulting in blurred data display and data reading errors, thus causing data deviations. Furthermore, the device can collect and process the water fog, preventing excessive moisture accumulation inside the dial from forming droplets that could damage circuitry and render the instrument unusable.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an instrument with anti-fog function, comprising: Support legs; The lower housing of the instrument is fixedly connected to the upper end of the support leg; The display panel is fixedly installed inside the lower housing of the instrument. The instrument comprises an arc-shaped support plate assembly, an upper housing, and an instrument mirror. The arc-shaped support plate assembly is fixedly installed on both the left and right ends of the upper surface of the lower housing. The upper housing is fixedly connected to the upper end of the arc-shaped support plate assembly, and an instrument mirror is fixedly installed in the middle of the inner side of the upper housing. A defogging device is provided between the lower housing and the upper housing of the instrument. A rotating shaft is rotatably mounted on the upper center of the display panel, with the upper end of the rotating shaft extending above the instrument mirror. The defogging unit is rotatably mounted in the middle of the rotating shaft, and the end of the defogging unit away from the rotating shaft extends to the front and rear sides of the lower housing of the instrument. The unit comprises a sponge block, an L-shaped plate, and a heating block. The sponge block is fixedly installed on the upper end of the defogging unit and is symmetrically distributed on the left and right. An L-shaped plate is fixedly connected to the upper end of the defogging unit near the rotating shaft, and a heating block is provided on the upper end of the L-shaped plate. The enclosure unit is provided inside the arc-shaped support plate group, and the end of the enclosure unit away from the arc-shaped support plate group is fixedly installed on the left and right side walls of the defogging unit.

[0006] Preferably, a detection head is installed at the lower end of the display panel, and the lower end of the detection head extends to the bottom of the lower housing of the instrument.

[0007] Preferably, the space between the lower and upper housings of the instrument is formed by the two arc-shaped support plate groups on the left and right along their arc direction, and the upper and lower housings of the instrument are located on the upper and lower sides of the arc-shaped channels, respectively.

[0008] Preferably, a rotating plate is rotatably mounted in the middle of the rotating shaft, and rectangular frames are fixedly connected to both ends of the rotating plate. Guide plates are symmetrically installed on the upper end of the rectangular frames, and sponge blocks are provided on the upper end of the guide plates. An arc-shaped slider is fixedly connected to the side wall of the rectangular frame away from the rotating plate. The arc-shaped slider is slidably mounted in the arc-shaped channel. A first deflector plate is provided on the side wall of the arc-shaped slider away from the rectangular frame. A T-shaped rod is provided inside the rectangular frame. The end of the T-shaped rod away from the rotating plate passes through the arc-shaped slider and is fixedly connected to the first deflector plate. A compression spring is sleeved on the T-shaped rod, and a sponge column is sleeved on the outside of the compression spring.

[0009] Preferably, a water outlet is provided at the bottom of the rectangular frame away from the rotating plate, and a water outlet pipe is provided below the water outlet. The lower end of the water outlet pipe passes through the side wall of the lower housing of the instrument and extends to the outside of the lower housing of the instrument.

[0010] Preferably, the arc-shaped channel has arc-shaped limiting grooves on both the upper and lower sides, and the arc-shaped slider has a first limiting protrusion fixedly provided at the middle of both the upper and lower end faces, and the first limiting protrusion is slidably disposed in the arc-shaped limiting groove.

[0011] Preferably, the inner side of the arc-shaped support plate assembly is symmetrically rotated with a vertical shaft. The lower end of the vertical shaft is connected to the upper end of the lower housing of the instrument through a torsion spring. A membrane roller is fixedly installed on the vertical shaft, and a retaining membrane is wound on the membrane roller. The ends of the retaining membrane are respectively fixedly connected to the side wall of the corresponding arc-shaped slider.

[0012] Preferably, the defogging device further includes a blower unit and a dust scraper unit. The blower unit is located in the middle of the left and right side walls of the rectangular frame, away from the rotating plate. The lower end of the blower unit is fixedly installed on the inner side wall of the lower housing of the instrument. The upper end of the rotating shaft is fixedly connected to the dust scraper unit, and the lower end of the dust scraper unit slides against the upper surface of the instrument mirror.

[0013] Preferably, a horizontal plate is fixedly installed at the middle of the left and right side walls of the rectangular frame away from the rotating plate, and a blower shaft is rotatably installed at the middle of the horizontal plate away from the rectangular frame. A blower blade is fixedly installed at the upper end of the blower shaft, and a blower gear is provided at the lower end of the blower shaft by means of a key connection. A ring internal gear meshes with one side of the blower gear, and the ring internal gear is fixedly connected to the inner side wall of the lower housing of the instrument near the upper end.

[0014] Preferably, a rotating rod is fixedly connected to the upper end of the rotating shaft, a wiping block is inserted into the middle of the rotating rod, a handle is fixedly provided at the middle of the upper end of the wiping block, an annular slide is opened on the upper end surface of the lower housing of the instrument, a second limiting protrusion is fixedly provided at the lower end surface of the rotating rod away from the rotating shaft, the slide of the second limiting protrusion is installed in the annular slide, and a second lever is fixedly installed at the upper end surface of the rotating rod away from the rotating shaft.

[0015] The beneficial effects of this invention are: 1. An instrument with waterproof and fog-proof function. The present invention sets the outer shell of the instrument into two parts: a lower shell and an upper shell, which are connected by an arc-shaped support plate group in the middle. This allows an arc-shaped channel to be formed between the lower shell and the upper shell, providing installation space for the defogging device. At the same time, the defogging device is provided with enclosure units on both sides to ensure the waterproof performance of the internal parts of the instrument with waterproof and fog-proof function.

[0016] 2. An instrument with anti-fogging function, wherein the anti-fogging unit in the anti-fogging device can reciprocate to scrape the lower end face of the instrument mirror, thereby removing water mist. At the same time, the heating block can heat the surface, improving the water mist evaporation efficiency. The anti-fogging unit can also drive the blower unit to operate and generate airflow towards the inner wall of the instrument mirror. With the cooperation of the heating block, the lower end face of the instrument mirror can be treated with hot air, which not only achieves the purpose of removing water mist, but also raises the temperature of the inner wall of the instrument mirror, thus having a certain anti-fogging function.

[0017] 3. An instrument with waterproof fog function, wherein the scraping unit can wipe the upper surface of the instrument mirror, improving the clarity of the instrument mirror, ensuring accurate readings by the user, and thus improving the accuracy of soil testing structure. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention after the instrument lens has been removed; Figure 3 This is the present invention. Figure 2 A schematic diagram of the instrument's three-dimensional structure after the upper housing has been removed; Figure 4 This is a top view of the present invention; Figure 5 In this invention Figure 4 A schematic diagram of the three-dimensional structure in AA section view; Figure 6 In this invention Figure 3 A magnified structural diagram at point B; Figure 7 This is a three-dimensional structural diagram of the rotating shaft, defogging unit, sponge block, L-shaped plate, heating block and blower unit in this invention; Figure 8 This is a three-dimensional structural diagram of the rotating shaft, defogging unit, sponge block, and blower unit in this invention; Figure 9 This is a three-dimensional structural diagram of the instrument housing, instrument mirror, and dust removal unit in this invention; Figure 10 In this invention Figure 9 A magnified structural diagram at point C.

[0020] In the picture: 1. Support legs; 2. Lower housing of the instrument; 3. Display panel; 31. Detection head; 4. Arc-shaped support plate assembly; 5. Upper housing of the instrument; 6. Instrument mirror; 7. Demisting device; 71. Rotating shaft; 72. Demisting unit; 721. Rotating plate; 722. Rectangular frame; 7221. Water outlet; 7222. Water outlet pipe; 723. Guide plate; 724. Arc-shaped slider; 7241. First limiting protrusion; 725. First lever; 726. T-shaped rod; 727. Sponge column; 728. Compression spring; 73. Sponge block; 74. L-shaped plate; 75. Heating block; 76. Enclosure unit; 761. Vertical shaft; 762. Film roller; 763. Enclosure film; 77. Blower unit; 771. Horizontal plate; 772. Blower shaft; 773. Blower gear; 774. Blower blade; 775. Annular internal gear ring; 78. Scraping unit; 781. Circular slide; 782. Rotating rod; 783. Wiping block; 784. Handle; 785. Second limit protrusion; 786. Second lever. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: See Figures 1 to 3 An instrument with anti-fog function, comprising: Outrigger 1; The lower housing 2 of the instrument is fixedly connected to the upper end of the support leg 1; Display panel 3 is fixedly installed inside the lower housing 2 of the instrument. A detection head 31 is installed at the lower end of the display panel 3, and the lower end of the detection head 31 extends to the bottom of the lower housing 2 of the instrument.

[0023] The instrument consists of an arc-shaped support plate assembly 4, an upper instrument housing 5, and an instrument mirror 6. The arc-shaped support plate assembly 4 is fixedly installed on the left and right ends of the upper surface of the lower instrument housing 2. The upper instrument housing 5 is fixedly connected to the upper end of the arc-shaped support plate assembly 4. The instrument mirror 6 is fixedly installed in the middle of the inner side of the upper instrument housing 5. The two arc-shaped support plate assemblies 4 form two arc-shaped channels between the lower instrument housing 2 and the upper instrument housing 5 along their arc direction. The upper instrument housing 5 and the lower instrument housing 2 are located on the upper and lower sides of the arc-shaped channels, respectively.

[0024] In practical operation, the instrument with waterproof and fog-proof function is a comprehensive soil tester. Its main function is to detect characteristic parameters such as soil moisture, organic matter content, and pH. Before use, the instrument with waterproof and fog-proof function is first placed above the soil area to be tested by manual means to keep it flat. Then, the detection head 31 is inserted into the soil to be tested. After the display panel 3 shows a stable reading area, the corresponding data is read manually to complete a single test operation.

[0025] Example 2: The technical solution is basically the same as that of Example 1. (See attached document for details.) Figures 1 to 6 The difference is: Defogging device 7 is provided between the lower housing 2 and the upper housing 5 of the instrument. A rotating shaft 71 is rotatably mounted on the upper middle part of the display disk 3, and the upper end of the rotating shaft 71 extends to the top of the instrument mirror 6. Defogging unit 72, wherein the defogging unit 72 is rotatably mounted in the middle of the rotating shaft 71 and the end of the defogging unit 72 away from the rotating shaft 71 extends to the front and rear sides of the lower housing 2 of the instrument; A rotating plate 721 is rotatably mounted in the middle of the rotating shaft 71. Rectangular frames 722 are fixedly connected to both ends of the rotating plate 721. Guide plates 723 are symmetrically mounted on the upper end of the rectangular frames 722. A sponge block 73 is provided on the upper end of the guide plate 723. An arc-shaped slider 724 is fixedly connected to the side wall of the rectangular frame 722 away from the rotating plate 721. The arc-shaped slider 724 is slidably mounted in the arc-shaped channel. A first deflector 725 is provided on the side wall of the arc-shaped slider 724 away from the rectangular frame 722. A T-shaped rod 726 is provided inside the rectangular frame 722. The end of the T-shaped rod 726 away from the rotating plate 721 passes through the arc-shaped slider 724 and is fixedly connected to the first deflector 725. A compression spring 728 is sleeved on the T-shaped rod 726. A sponge column 727 is sleeved on the outside of the compression spring 728.

[0026] The rectangular frame 722 has a water outlet 7221 at the bottom away from the rotating plate 721. A water outlet pipe 7222 is provided below the water outlet 7221. The lower end of the water outlet pipe 7222 passes through the side wall of the lower housing 2 of the instrument and extends to the outside of the lower housing 2 of the instrument.

[0027] The arc-shaped channel has arc-shaped limiting grooves on both the upper and lower sides. The arc-shaped slider 724 has a first limiting protrusion 7241 fixedly provided at the middle of both the upper and lower end faces. The first limiting protrusion 7241 is slidably disposed in the arc-shaped limiting groove.

[0028] The sponge block 73, L-shaped plate 74, and heating block 75 are fixedly installed on the upper end of the defogging unit 72 and are symmetrically distributed on the left and right. The L-shaped plate 74 is fixedly connected to the upper end face of the defogging unit 72 near the rotating shaft 71, and the heating block 75 is provided on the upper end of the L-shaped plate 74. The enclosure unit 76 is provided inside the arc-shaped support plate group 4, and the end of the enclosure unit 76 away from the arc-shaped support plate group 4 is fixedly installed on the left and right side walls of the defogging unit 72.

[0029] The arc-shaped support plate group 4 has a vertical shaft 761 that is symmetrically rotated back and forth on the inner side. The lower end of the vertical shaft 761 is connected to the upper end of the lower housing 2 of the instrument through a torsion spring. A membrane roller 762 is fixedly installed on the vertical shaft 761. A retaining membrane 763 is wound around the membrane roller 762. The ends of the retaining membrane 763 are respectively fixedly connected to the side wall of the corresponding arc-shaped slider 724.

[0030] It should be noted that in this embodiment, both the upper and lower ends of the enclosure film 763 are slidably fitted within the arc-shaped limiting groove, so that the enclosure film 763 can seal the arc-shaped channel.

[0031] In practical operation, before use, if the user finds that water mist forms on the inner wall of the instrument mirror 6 and affects data reading, the first dial 725 can be manually moved back and forth, thereby driving the arc-shaped slider 724, the rectangular frame 722, and the rotating plate 721 to rotate. During the rotation of the arc-shaped slider 724, the obstruction film 763 on one side will be wound up, and the obstruction film 763 on the other side will be unwound. Since a torsion spring is installed at the lower end of the vertical shaft 761, the wound obstruction film 763 will be wrapped around the film roller 762, thus making the arc-shaped channel start... Ultimately, the fog can be blocked, ensuring the airtightness of the instrument with waterproof fog function. During the rotation of the rectangular frame 722, the sponge block 73 can rotate, and the sponge block 73 scrapes away and absorbs the water fog generated on the inner wall of the instrument mirror 6. When the sponge block 73 reaches saturation, the excess water will flow into the rectangular frame 722 through the guide plate 723, and then be absorbed by the sponge column 727 inside the rectangular frame 722. During the defogging process, the heating block 75 can generate some heat, thereby improving the drying efficiency of the inner wall of the instrument mirror 6. After the defogging process is completed, the defogging unit 72 resets. At this time, the water outlet 7221 and the water outlet pipe 7222 are aligned. By manually pulling the first deflector 725 to the front and back, the T-shaped rod 726 is moved. The T-shaped rod 726 squeezes the sponge column 727, compressing the compression spring 728 and squeezing out the water inside. The squeezed water is discharged to the outside through the water outlet 7221 and the water outlet pipe 7222. Then, the first deflector 725 is released, and under the reaction force of the compression spring 728, both the first deflector 725 and the sponge column 727 automatically reset.

[0032] Example 3: The technical solution is basically the same as that of Example 2. (See attached document for details.) Figures 7 to 10 The difference is: The defogging device 7 also includes a blower unit 77 and a dust scraper unit 78. The blower unit 77 is located in the middle of the left and right side walls of the rectangular frame 722 away from the rotating plate 721. The lower end of the blower unit 77 is fixedly installed on the inner side wall of the lower housing 2 of the instrument. The upper end of the rotating shaft 71 is fixedly connected to the dust scraper unit 78. The lower end of the dust scraper unit 78 slides against the upper surface of the instrument mirror 6.

[0033] A horizontal plate 771 is fixedly installed at the middle of the left and right side walls of the rectangular frame 722, away from the rotating plate 721. A blower shaft 772 is rotatably installed at the middle of the horizontal plate 771, away from the rectangular frame 722. A blower blade 774 is fixedly installed at the upper end of the blower shaft 772. A blower gear 773 is provided at the lower end of the blower shaft 772 by means of a key connection. An annular internal gear ring 775 is meshed on one side of the blower gear 773. The annular internal gear ring 775 is fixedly connected to the inner side wall of the lower housing 2 of the instrument near the upper end.

[0034] A rotating rod 782 is fixedly connected to the upper end of the rotating shaft 71. A wiping block 783 is inserted into the middle of the rotating rod 782. A handle 784 is fixedly installed at the middle of the upper end of the wiping block 783. An annular slide 781 is opened on the upper end face of the lower housing 2 of the instrument. A second limiting protrusion 785 is fixedly installed on the lower end face of the rotating rod 782 away from the rotating shaft 71. The slide of the second limiting protrusion 785 is installed in the annular slide 781. A second lever 786 is fixedly installed on the upper end face of the rotating rod 782 away from the rotating shaft 71.

[0035] In specific operation, as the first dial plate 725 drives the rectangular frame 722 to reciprocate, the rectangular frame 722 will drive the blower gear 773 to reciprocate synchronously. Due to the action of the annular internal gear ring 775, the blower gear 773 and the blower shaft 772 will rotate and drive the blower blades 774. The rotation of the blower blades 774 generates airflow, which can blow air onto the inner wall of the instrument mirror 6, thereby improving the drying efficiency of the inner wall moisture and ensuring the defogging effect. When the upper surface of the instrument mirror 6 is blurry, the second dial 786 can be manually rotated to drive the rotating rod 782 and the wiping block 783 to rotate. When the wiping block 783 rotates, it can wipe the upper surface of the instrument mirror 6 to remove the surface dust. After wiping, the wiping block 783 can be pulled out by manually pulling the handle 784 upwards, then cleaned and put back.

[0036] The working principle of this invention during use: 1. Before use, manually place the waterproof and fog-proof instrument above the soil area to be tested to keep it flat. Then insert the detection head 31 into the soil to be tested. After the display panel 3 shows a stable reading, manually read the corresponding data to complete a single test. Second: When users find that water mist forms on the inner wall of the instrument mirror 6 and affects data reading, they can manually move the first dial 725 back and forth, thereby driving the arc-shaped slider 724, the rectangular frame 722, and the rotating plate 721 to rotate. During the rotation of the arc-shaped slider 724, it will cause the shielding film 763 on one side to roll up and the shielding film 763 on the other side to unroll. Since a torsion spring is installed at the lower end of the vertical shaft 761, the rolled-up shielding film 763 will be wrapped around the film roller 762, so that the arc-shaped channel can always be blocked, ensuring the airtightness of the instrument with anti-fog function. During the rotation of the rectangular frame 722, it can drive the sponge block 73 to rotate. The sponge block 73 scrapes away and absorbs the water mist on the inner wall of the instrument mirror 6. When the sponge block 73 is saturated, the excess water will be discharged through the... The water flows through the guide plate 723 into the rectangular frame 722, and is then absorbed by the sponge column 727 inside the rectangular frame 722. During the defogging process, the heating block 75 can generate some heat, thereby improving the drying efficiency of the inner wall of the instrument mirror 6. When the defogging process is over, the defogging unit 72 is reset. At this time, the water outlet 7221 and the water outlet pipe 7222 are aligned. By manually pulling the first deflector 725 to the front and back sides, the T-shaped rod 726 is driven to move. The T-shaped rod 726 squeezes the sponge column 727, and the compression spring 728 is compressed, thereby squeezing out the water inside. The squeezed water will be discharged to the outside through the water outlet 7221 and the water outlet pipe 7222. Then, the first deflector 725 is released. Under the reaction force of the compression spring 728, the first deflector 725 and the sponge column 727 will automatically reset. Third: During the process of the first dial plate 725 driving the rectangular frame 722 to reciprocate, the rectangular frame 722 will drive the blower gear 773 to reciprocate synchronously. Due to the action of the annular internal gear ring 775, the blower gear 773 and the blower shaft 772 will rotate and drive the blower blades 774. The rotation of the blower blades 774 generates airflow, which can blow air onto the inner wall of the instrument mirror 6, thereby improving the drying efficiency of the inner wall moisture and ensuring the defogging effect. Fourth: When the upper surface of the instrument mirror 6 is blurry, the second dial 786 can be manually rotated to drive the rotating rod 782 and the wiping block 783 to rotate. When the wiping block 783 rotates, it can wipe the upper surface of the instrument mirror 6 to remove the surface dust. After wiping, the wiping block 783 can be pulled out by manually pulling the handle 784 upwards, then cleaned and put back.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An instrument with waterproof and fog-proof function, characterized in that, include: Support leg (1); The lower housing (2) of the instrument is fixedly connected to the upper end of the support leg (1); Display panel (3), the lower housing (2) of the instrument is fixedly installed inside the display panel (3); Arc-shaped support plate assembly (4), upper housing of instrument (5) and instrument mirror (6), the upper end face of the lower housing of instrument (2) is fixedly provided with arc-shaped support plate assembly (4) at both ends, the upper end of the arc-shaped support plate assembly (4) is fixedly connected to the upper housing of instrument (5), and the instrument mirror (6) is fixedly installed in the middle of the inner side of the upper housing of instrument (5). Defogging device (7), a defogging device (7) is provided between the lower housing (2) and the upper housing (5) of the instrument; A rotating shaft (71) is rotatably mounted on the upper middle part of the display disk (3), and the upper end of the rotating shaft (71) extends to the top of the instrument mirror (6); Defogging unit (72), wherein the defogging unit (72) is rotatably mounted in the middle of the rotating shaft (71) and the end of the defogging unit (72) away from the rotating shaft (71) extends to the front and rear sides of the lower housing (2) of the instrument; The sponge block (73), L-shaped plate (74) and heating block (75) are fixedly installed on the upper end of the defogging unit (72) and the sponge block (73) is symmetrically distributed on the left and right. The L-shaped plate (74) is fixedly connected to the upper end face of the defogging unit (72) near the rotating shaft (71), and the heating block (75) is provided on the upper end of the L-shaped plate (74). The enclosure unit (76) is provided inside the arc-shaped support plate group (4). The end of the enclosure unit (76) away from the arc-shaped support plate group (4) is fixedly installed on the left and right side walls of the defogging unit (72).

2. An instrument with waterproof and fog-proof function according to claim 1, characterized in that: The lower end of the display panel (3) is equipped with a detection head (31), and the lower end of the detection head (31) extends to the lower housing (2) of the instrument.

3. An instrument with waterproof and fog-proof function according to claim 1, characterized in that: The two arc-shaped support plate groups (4) on the left and right sides form two arc-shaped channels between the lower housing (2) and the upper housing (5) of the instrument along their arc direction. The upper housing (5) and the lower housing (2) of the instrument are located on the upper and lower sides of the arc-shaped channels, respectively.

4. An instrument with waterproof and fog-proof function according to claim 1, characterized in that: A rotating plate (721) is rotatably mounted in the middle of the rotating shaft (71). A rectangular frame (722) is fixedly connected to both the front and rear ends of the rotating plate (721). A guide plate (723) is symmetrically mounted on the upper end of the rectangular frame (722). A sponge block (73) is provided on the upper end of the guide plate (723). An arc-shaped slider (724) is fixedly connected to the side wall of the rectangular frame (722) away from the rotating plate (721). The arc-shaped slider (724) is slidably mounted in the arc-shaped channel. Inside, a first lever plate (725) is provided on the side wall of the arc-shaped slider (724) away from the rectangular frame (722). A T-shaped rod (726) is provided inside the rectangular frame (722). The end of the T-shaped rod (726) away from the rotating plate (721) passes through the arc-shaped slider (724) and is fixedly connected to the first lever plate (725). A compression spring (728) is sleeved on the T-shaped rod (726), and a sponge column (727) is sleeved on the outside of the compression spring (728).

5. An instrument with waterproof and fog-proof function according to claim 4, characterized in that: The rectangular frame (722) has a water outlet (7221) at the bottom away from the rotating plate (721). A water outlet pipe (7222) is provided below the water outlet (7221). The lower end of the water outlet pipe (7222) passes through the side wall of the lower housing (2) of the instrument and extends to the outside of the lower housing (2).

6. An instrument with waterproof and fog-proof function according to claim 3, characterized in that: The arc-shaped channel has arc-shaped limiting grooves on both the upper and lower sides. The arc-shaped slider (724) has a first limiting protrusion (7241) fixedly installed at the middle of both the upper and lower end faces. The first limiting protrusion (7241) is slidably installed in the arc-shaped limiting groove.

7. An instrument with waterproof and fog-proof function according to claim 4, characterized in that: The arc-shaped support plate assembly (4) has a vertical shaft (761) that rotates symmetrically back and forth on its inner side. The lower end of the vertical shaft (761) is connected to the upper end of the lower housing (2) of the instrument through a torsion spring. A membrane roller (762) is fixedly installed on the vertical shaft (761). A retaining membrane (763) is wound around the membrane roller (762). The ends of the retaining membrane (763) are fixedly connected to the side walls of the corresponding arc-shaped slider (724).

8. An instrument with waterproof and fog-proof function according to claim 4, characterized in that: The defogging device (7) also includes a blower unit (77) and a dust scraper unit (78). The blower unit (77) is located in the middle of the left and right side walls of the rectangular frame (722) away from the rotating plate (721). The lower end of the blower unit (77) is fixedly installed on the inner side wall of the lower housing (2) of the instrument. The upper end of the rotating shaft (71) is fixedly connected to the dust scraper unit (78). The lower end of the dust scraper unit (78) slides against the upper surface of the instrument mirror (6).

9. An instrument with waterproof and fog-proof function according to claim 8, characterized in that: A horizontal plate (771) is fixedly installed at the middle of the left and right side walls of the rectangular frame (722) away from the rotating plate (721). A blower shaft (772) is rotatably installed at the middle of the horizontal plate (771) away from the rectangular frame (722). A blower blade (774) is fixedly installed at the upper end of the blower shaft (772). A blower gear (773) is provided at the lower end of the blower shaft (772) by a key connection. An annular internal gear ring (775) meshes on one side of the blower gear (773). The annular internal gear ring (775) is fixedly connected to the inner side wall of the lower housing (2) of the instrument near the upper end.

10. An instrument with waterproof and fog-proof function according to claim 8, characterized in that: A rotating rod (782) is fixedly connected to the upper end of the rotating shaft (71). A wiping block (783) is inserted into the middle of the rotating rod (782). A handle (784) is fixedly installed at the middle of the upper end of the wiping block (783). An annular slide (781) is opened on the upper surface of the lower housing (2) of the instrument. A second limiting protrusion (785) is fixedly installed on the lower surface of the rotating rod (782) away from the rotating shaft (71). The slide of the second limiting protrusion (785) is installed in the annular slide (781). A second lever (786) is fixedly installed on the upper surface of the rotating rod (782) away from the rotating shaft (71).

Images