Portable gas concentration measuring device

Abstract

The utility model relates to the technical field of gas concentration measuring devices, and discloses a portable gas concentration measuring device which comprises a gas concentration measuring instrument body, an air collecting head is fixedly installed at the right end of the gas concentration measuring instrument body, and a protection mechanism is arranged outside the gas concentration measuring instrument body. The protection mechanism comprises a protection cover plate and guide grooves, the guide grooves are formed in the outer walls of the front face and the back face of the gas concentration measuring instrument body, the protection cover plate is arranged to protect keys and a display screen on the gas concentration measuring instrument body, and the protection cover plate is pulled to drive sliding columns to slide along the guide grooves. According to the gas concentration measuring instrument, the protective cover plate and the keys and the display screen on the gas concentration measuring instrument body are staggered, and then the protective cover plate can be overturned by utilizing the characteristic that the sliding column can rotate in the guide groove, that is, the protective cover plate can be overturned without being taken down from the gas concentration measuring instrument body.

Description

Technical Field

[0001] The utility model relates to the technical field of gas concentration measuring devices, and particularly relates to a portable gas concentration measuring device. Background Art

[0002] The gas concentration measuring device mainly measures the occupancy of a certain gas in the air to check whether it meets the air standard under the current space. The commonly seen handheld gas concentration measuring device is similar in volume and shape to a calculator and a multimeter, and only a pump for collecting air is provided at the end. Therefore, it is more convenient to use and carry. However, most gas concentration measuring devices do not have corresponding protective structures at the key parts and display parts, and it is easy to damage the keys and the display screen due to the dropping of the gas concentration measuring device during carrying. Content of the Utility Model

[0003] The purpose of the utility model is to provide a portable gas concentration measuring device to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A portable gas concentration measuring device, including a gas concentration measuring instrument body, an air collection head is fixedly installed at the right end of the gas concentration measuring instrument body, and a protection mechanism is arranged outside the gas concentration measuring instrument body;

[0005] The protection mechanism includes a protection cover plate and a guide groove. The guide groove is opened on the front and back outer walls of the gas concentration measuring instrument body. The protection cover plate covers the gas concentration measuring instrument body. A sliding column is fixedly installed on the inner side of the protection cover plate, and the sliding column is slidably arranged in the guide groove. A fixed seat is fixedly installed on the left outer wall of the protection cover plate. A rotating plate is rotatably connected to the fixed seat through a pin shaft. A torsion spring is movably sleeved on the outer wall of the pin shaft. One end of the torsion spring is fixedly connected to the outer wall of the rotating plate, and the other end is fixedly connected to the outer wall of the fixed seat.

[0006] Further, grooves are opened on the front and back of the gas concentration measuring instrument body. The grooves are internally communicated with the guide groove. Elastic cards are arranged inside the grooves. The left and right ends of the elastic cards are fixedly connected to the inner walls of the grooves. There are two groups of elastic cards arranged up and down. The sliding column is clamped between the upper and lower elastic cards.

[0007] Further, a transparent window is fixedly installed on the top of the protection cover plate, and the transparent window is directly opposite to the display screen on the gas concentration measuring instrument body.

[0008] Further, anti-slip protrusions are arranged on the upper surface of the protection cover plate, and the anti-slip protrusions are staggered from the transparent window.

[0009] Further, anti-slip stripes are provided on the outer walls of both the protective cover plate and the gas concentration measuring instrument body. The anti-slip stripes on the gas concentration measuring instrument body are located on the front and back surfaces of the gas concentration measuring instrument body, and the anti-slip stripes on the protective cover plate are located on the front and back surfaces of the protective cover plate.

[0010] Further, an installation ring is fixedly installed at the right end of the gas concentration measuring instrument body, and an anti-loss rope ring is fixedly installed inside the installation ring. The installation ring is close to the upper right corner of the gas concentration measuring instrument body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. A protective cover plate is provided to protect the keys and display screen on the gas concentration measuring instrument body. By pulling the protective cover plate, the sliding column slides along the guiding groove, so that the protective cover plate is staggered from the keys and display screen on the gas concentration measuring instrument body. Then, taking advantage of the fact that the sliding column can rotate in the guiding groove, the protective cover plate can be flipped, that is, the protective cover plate can be flipped without removing it from the gas concentration measuring instrument body. A rotating plate is provided to block the left side of the protective cover plate to ensure that the protective cover plate can fully protect the structure on the upper surface of the gas concentration measuring instrument body. When the protective cover plate is flipped, the rotating plate can rotate under force without hindering the flipping of the protective cover plate. A torsion spring is provided to push the rotating plate to reset;

[0013] 2. A transparent window is provided so that the user can observe whether the display screen on the gas concentration measuring instrument body is lit during transportation, thereby avoiding power damage caused by the gas concentration measuring instrument body being always open. Anti-slip protrusions are provided to increase the friction between the protective cover plate and the palm, thereby preventing the protective cover plate from slipping off the hand. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the explosion view of the protection mechanism of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the protective cover plate of the present utility model;

[0017] Figure 4 is the present utility model Figure 3 is a schematic structural diagram of the enlarged structure at A of the present utility model;

[0018] Figure 5 is a schematic structural diagram of the elastic card and the sliding column of the present utility model.

[0019] In the figure: 1. Main body of the gas concentration measuring instrument; 2. Air collection head; 3. Protection mechanism; 301. Protection cover plate; 302. Guide groove; 303. Slide post; 304. Rotating plate; 305. Fixed seat; 306. Pin shaft; 307. Torsion spring; 4. Transparent window; 5. Anti-slip protrusion; 6. Anti-slip stripe; 7. Mounting ring; 8. Anti-loss rope ring; 9. Groove; 10. Elastic card. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Please refer to Figures 1-5 , the present invention provides a technical solution: a portable gas concentration measuring device, including a main body 1 of the gas concentration measuring instrument, an air collection head 2 is fixedly installed at the right end of the main body 1 of the gas concentration measuring instrument, and a protection mechanism 3 is arranged outside the main body 1 of the gas concentration measuring instrument;

[0022] The protection mechanism 3 includes a protection cover plate 301 and a guide groove 302. The guide groove 302 is opened on the front and back outer walls of the main body 1 of the gas concentration measuring instrument. The protection cover plate 301 covers the main body 1 of the gas concentration measuring instrument. A slide post 303 is fixedly installed on the inner side of the protection cover plate 301. The slide post 303 is slidably arranged in the guide groove 302. A fixed seat 305 is fixedly installed on the left outer wall of the protection cover plate 301. The fixed seat 305 is rotatably connected to a rotating plate 304 through a pin shaft 306. A torsion spring 307 is movably sleeved on the outer wall of the pin shaft 306. One end of the torsion spring 307 is fixedly connected to the outer wall of the rotating plate 304, and the other end is fixedly connected to the outer wall of the fixed seat 305. The protection cover plate 301 is provided to protect the keys and display screen on the main body 1 of the gas concentration measuring instrument. By pulling the protection cover plate 301 to drive the slide post 303 to slide along the guide groove 302, the protection cover plate 301 is staggered from the keys and display screen on the main body 1 of the gas concentration measuring instrument. Then, by using the characteristic that the slide post 303 can rotate in the guide groove 302, the protection cover plate 301 can be flipped, that is, the protection cover plate 301 can be flipped without removing it from the main body 1 of the gas concentration measuring instrument. The rotating plate 304 is provided to block the left side of the protection cover plate 301 to ensure that the protection cover plate 301 can fully protect the structure on the upper surface of the main body 1 of the gas concentration measuring instrument. When the protection cover plate 301 is flipped, the rotating plate 304 can rotate under force without hindering the flipping of the protection cover plate 301. The torsion spring 307 is provided to push the rotating plate 304 to reset;

[0023] The front and back of the main body 1 of the gas concentration measuring instrument are provided with grooves 9. The grooves 9 are internally communicated with the guide grooves 302. An elastic card 10 is arranged inside the grooves 9. The left and right ends of the elastic card 10 are fixedly connected to the inner walls of the grooves 9. There are two sets of elastic cards 10 arranged up and down. The sliding column 303 is stuck between the two elastic cards 10 arranged up and down. By using the limit of the elastic card 10 on the sliding column 303, when the protective cover plate 301 covers the upper surface of the main body 1 of the gas concentration measuring instrument, it is not easy to slide, thereby ensuring that the protective cover plate 301 always protects the keys and the display screen on the main body 1 of the gas concentration measuring instrument during the transportation process;

[0024] A transparent window 4 is fixedly installed on the top of the protective cover plate 301. The transparent window 4 faces the display screen on the main body 1 of the gas concentration measuring instrument. The transparent window 4 is provided to enable the user to observe whether the display screen on the main body 1 of the gas concentration measuring instrument lights up during transportation, thereby avoiding power damage caused by the main body 1 of the gas concentration measuring instrument being always opened;

[0025] Anti-slip protrusions 5 are arranged on the upper surface of the protective cover plate 301. The anti-slip protrusions 5 are staggered from the transparent window 4. When the protective cover plate 301 is flipped to the lower part of the main body 1 of the gas concentration measuring instrument, the anti-slip protrusions 5 are provided to increase the friction between the protective cover plate 301 and the palm, thereby avoiding the protective cover plate 301 slipping from the hand;

[0026] Anti-slip stripes 6 are arranged on the outer walls of both the protective cover plate 301 and the main body 1 of the gas concentration measuring instrument. The anti-slip stripes 6 on the main body 1 of the gas concentration measuring instrument are located on the front and back of the main body 1 of the gas concentration measuring instrument. The anti-slip stripes 6 on the protective cover plate 301 are located on the front and back of the protective cover plate 301. Arranging the anti-slip stripes 6 on the protective cover plate 301 can make the protective cover plate 301 more easily stressed when pulling the protective cover plate 301. Arranging the anti-slip stripes 6 on the main body 1 of the gas concentration measuring instrument increases the friction between the palm and the main body 1 of the gas concentration measuring instrument and reduces the probability of slipping;

[0027] An installation ring 7 is fixedly installed at the right end of the main body 1 of the gas concentration measuring instrument. An anti-loss rope ring 8 is fixedly installed inside the installation ring 7. The installation ring 7 is close to the upper right corner of the main body 1 of the gas concentration measuring instrument. The installation ring 7 is provided for installing the anti-loss rope ring 8. The anti-loss rope ring 8 is provided for being sleeved on the arm to avoid the gas concentration measuring device slipping.

[0028] Working principle: When in use, when transporting the gas concentration measuring device, the protective cover plate 301 covers the upper surface of the gas concentration measuring instrument body 1 to protect the keys and display screen on the gas concentration measuring instrument body 1. At this time, the rotating plate 304 is pulled by the torsion spring 307 to block the left side of the protective cover plate 301, providing all-round protection for the gas concentration measuring instrument body 1. When using the gas concentration measuring instrument body 1, pull the protective cover plate 301 to drive the sliding column 303 to move to the leftmost end of the guide groove 302, and then rotate the protective cover plate 301 to turn the protective cover plate 301 to the lower side of the gas concentration measuring instrument body 1. Then push the protective cover plate 301 to the right to drive the sliding column 303 to move to the elastic card 10, and the elastic card 10 will hold the sliding column 303 to fix the protective cover plate 301. At this time, the gas concentration measuring instrument body 1 can be operated normally.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A portable gas concentration measuring device, comprising a gas concentration measuring instrument body (1), an air sampling head (2) being fixedly mounted on the right end of the gas concentration measuring instrument body (1), characterized in that: A protection mechanism (3) is provided outside the gas concentration measuring instrument body (1); The protection mechanism (3) comprises a protection cover plate (301) and a guide groove (302). The guide groove (302) is provided on the front and back outer walls of the gas concentration measuring instrument body (1). The protection cover plate (301) covers the gas concentration measuring instrument body (1). A sliding column (303) is fixedly installed on the inner side of the protection cover plate (301). The sliding column (303) is slidably arranged in the guide groove (302). A fixed seat (305) is fixedly installed on the left outer wall of the protection cover plate (301). The fixed seat (305) is rotatably connected to a rotating plate (304) via a pin shaft (306). A torsion spring (307) is movably sleeved on the outer wall of the pin shaft (306). One end of the torsion spring (307) is fixedly connected to the outer wall of the rotating plate (304), and the other end is fixedly connected to the outer wall of the fixing seat (305).

2. A portable gas concentration measuring device according to claim 1, characterized in that: The front and back sides of the gas concentration measuring instrument body (1) are provided with grooves (9), the grooves (9) are connected to the inside of the guide groove (302), an elastic card (10) is arranged inside the groove (9), the left and right ends of the elastic card (10) are fixedly connected to the inner wall of the groove (9), the elastic card (10) is provided with two groups, an upper group and an lower group, and the sliding column (303) is clamped between the upper and lower elastic cards (10).

3. A portable gas concentration measuring device according to claim 1, characterized in that: A transparent window (4) is fixedly mounted on the top of the protective cover plate (301), and the transparent window (4) is directly opposite to the display screen on the gas concentration measuring instrument body (1).

4. A portable gas concentration measuring device according to claim 1, characterized in that: The upper surface of the protective cover plate (301) is provided with an anti-slip protrusion (5), and the anti-slip protrusion (5) is staggered with the transparent window (4).

5. A portable gas concentration measuring device according to claim 1, characterized in that: The outer walls of the protective cover plate (301) and the gas concentration measuring instrument body (1) are both provided with anti-slip stripes (6); the anti-slip stripes (6) on the gas concentration measuring instrument body (1) are located on the front and back sides of the gas concentration measuring instrument body (1); and the anti-slip stripes (6) on the protective cover plate (301) are located on the front and back sides of the protective cover plate (301).

6. A portable gas concentration measuring device according to claim 1, characterized in that: A mounting ring (7) is fixedly mounted on the right end of the gas concentration measuring instrument body (1), an anti-lost rope ring (8) is fixedly mounted inside the mounting ring (7), and the mounting ring (7) is close to the upper right corner of the gas concentration measuring instrument body (1).

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