Moisture measuring instrument

Abstract

The utility model discloses a humidity measuring instrument which comprises a shell, a control module arranged in the shell and a probe electrically connected with the control module, a push button linked with the probe is arranged on the shell, a sliding part is integrally arranged or fixed on the push button, the probe is arranged on the sliding part, a through hole for the probe to stretch out and draw back is formed in the shell, and the probe is arranged in the through hole. According to the utility model, the probe is prevented from being arranged outside, and the probe can be pushed out when in use, so that the accuracy of a test result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a moisture meter. Background Art

[0002] Chinese Patent No. CN200720071123.X discloses a pin-type moisture meter, which includes a housing, a control board, a battery, a battery cover, a liquid crystal, a button, and also includes an instrument end cover and two electrode pointers. By inserting the electrode pointers into the wood specimen to be measured, the humidity of the required wood can be obtained.

[0003] Problems existing in the above patent: The probes of the existing moisture meters are exposed, and impurities are likely to adhere to the surface of the probes. If not used for a long time, they will solidify or oxidize, resulting in inaccurate test results during the next use. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a moisture meter.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A moisture meter, which includes a housing, a control module arranged in the housing, and a probe electrically connected to the control module. A push button linked to the probe is arranged on the housing. A sliding part located in the housing is integrally provided or fixed on the push button. The probe is arranged on the sliding part. A through hole for the probe to stretch in and out is opened on the housing. Operating the push button enables the probe to fully enter the housing or enables the probe to at least partially extend out of the housing.

[0006] As a preferred technical solution of the utility model, a guide plate is arranged in the housing along the sliding direction of the probe, and a moving hole for the guide plate to pass through is opened on the sliding part.

[0007] As a preferred technical solution of the utility model, a cover plate is detachably connected to the sliding part. The cover plate and the sliding part cooperate with each other, and a pin hole for fixing the probe is formed between the two.

[0008] As a preferred technical solution of the utility model, a positioning rod is integrally provided or fixed on the cover plate. A positioning groove is arranged at the outer end of the positioning rod. A positioning convex block matched with the positioning groove is arranged on the inner wall of the housing. When the probe moves outwards, the positioning groove of its positioning rod is clamped and fixed with the positioning convex block.

[0009] As a preferred technical solution of the utility model, the inner end of the probe extends outside the pin hole.

[0010] As a preferred technical solution of the utility model, the control module includes a control circuit board, a display screen, a button, a humidity detection module, and a wire. The two ends of the wire are respectively electrically connected to the control circuit board and the probe.

[0011] As a preferred technical solution of the present utility model, the housing includes an upper housing and a lower housing assembled up and down. The display screen and the buttons are exposed on the surface of the upper housing, the push button is exposed on the surface of the lower housing, and a sliding groove for the push button to move is formed on the lower housing.

[0012] In summary, the beneficial effects of the present utility model are as follows: The probe is linked with the push button. When in use, at least part of the probe is pushed out of the housing, and when not in use, the probe is placed in the housing, avoiding oxidation or attachment of impurities on the external part of the probe, which affects the test results. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic diagram of the bottom structure of the present utility model;

[0015] Figure 3 is a schematic diagram of the internal structure of the present utility model;

[0016] Figure 4 is Figure 3 an enlarged view of part A;

[0017] Figure 5 is a schematic diagram of the structure of the cooperation between the probe and the push button in the present utility model.

[0018] Reference numerals: 1, housing; 2, probe; 3, control module; 4, push button; 5, sliding part; 6, guide plate; 7, sliding groove; 8, cover plate; 9, needle hole; 10, positioning rod; 11, positioning groove; 12, positioning convex block; 13, control circuit board; 14, display screen; 15, button; 16, wire; 17, upper housing; 18, lower housing; 19, moving hole. Detailed Embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and the drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present utility model.

[0020] The specific embodiments of the present utility model will be described below in conjunction with the drawings.

[0021] As Figures 1 to 5The humidity meter shown includes a shell 1, a control module 3 arranged in the shell 1, and a probe 2 electrically connected to the control module 3. The shell 1 is provided with a push button 4 linked to the probe 2. The push button 4 is integrally provided with or fixed with a sliding portion 5 located in the shell 1. The probe 2 is arranged on the sliding portion 5. The shell 1 is provided with a through hole for the probe 2 to be extended and retracted. The push button 4 is operated to make the probe 2 completely enter the shell 1 or make the probe 2 at least partially extend out of the shell 1.

[0022] The probe 2 is linked to the push button 4. When in use, the probe 2 is at least partially pushed out of the housing 1. When not in use, the probe 2 is stored in the housing 1 to prevent the external part of the probe 2 from being oxidized or adhering to impurities, which may affect the test results.

[0023] A guide plate 6 is arranged in the housing 1 along the sliding direction of the probe 2 , and a movable hole 19 for the guide plate 6 to pass through is opened on the sliding portion 5 , so that the push button 4 slides more stably.

[0024] The sliding part 5 is detachably connected with a cover plate 8, which cooperates with the sliding part 5 to form a pinhole 9 for fixing the probe 2, which can be threaded, plug-in or snap-in.

[0025] A positioning rod 10 is integrally arranged or fixed on the cover plate 8, a positioning groove 11 is arranged at the outer end of the positioning rod 10, and a positioning protrusion 12 cooperating with the positioning groove 11 is arranged on the inner wall of the shell 1. The positioning protrusion 12 can also be arranged on the positioning rod 10, and the positioning groove 11 is arranged in the shell 1. When the probe 2 moves outward, the positioning groove 11 of the positioning rod 10 is clamped and fixed with the positioning protrusion 12, which plays the role of in-position feedback, allowing the user to sense whether the probe 2 is pushed out in place.

[0026] The inner end of the probe 2 extends to the outside of the needle hole 9, so as to facilitate the flexible connection between the probe 2 and the wire 16. The probe 2 is solid or hollow inside.

[0027] The control module 3 includes a control circuit board 13, a built-in power supply (not shown in the figure), a display screen 14, a button 15, a humidity detection module (not shown in the figure) and a wire 16, and the two ends of the wire 16 are electrically connected to the control circuit board 13 (humidity detection module) and the probe 2 respectively.

[0028] The housing 1 comprises an upper shell 17 and a lower shell 18 assembled from top to bottom. The display screen 14 and the key 15 are exposed on the surface of the upper shell 17, and the push button 4 is exposed on the surface of the lower shell 18. A slide groove 7 for the push button 4 to move is provided on the lower shell 18. The layout is reasonable and will not be compacted in the same position.

[0029] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A humidity measuring instrument, comprising a housing (1), a control module (3) disposed in the housing (1), and a probe (2) electrically connected to the control module (3), characterized in that: The housing (1) is provided with a push button (4) linked to the probe (2); a sliding portion (5) located in the housing (1) is integrally provided or fixed to the push button (4); the probe (2) is arranged on the sliding portion (5); a through hole for the probe (2) to be extended and retracted is provided on the housing (1); the push button (4) is operated to allow the probe (2) to enter the housing (1) completely or to extend the probe (2) at least partially out of the housing (1).

2. The hygrometer according to claim 1, characterized in that: A guide plate (6) is arranged inside the housing (1) along the sliding direction of the probe (2), and a movable hole (19) for the guide plate (6) to pass through is provided on the sliding portion (5).

3. The hygrometer according to claim 1 or 2, characterized in that: The sliding part (5) is detachably connected to a cover plate (8), and the cover plate (8) and the sliding part (5) cooperate with each other to form a pinhole (9) for fixing the probe (2) therebetween.

4. The hygrometer according to claim 3, characterized in that: A positioning rod (10) is integrally arranged or fixed on the cover plate (8), a positioning groove (11) is arranged at the outer end of the positioning rod (10), and a positioning protrusion (12) cooperating with the positioning groove (11) is arranged on the inner wall of the shell (1), and when the probe (2) moves outward, the positioning groove (11) of the positioning rod (10) is fixedly engaged with the positioning protrusion (12).

5. The hygrometer according to claim 3, characterized in that: The inner end of the probe (2) extends outside the pinhole (9).

6. The hygrometer according to claim 1 or 4, characterized in that: The control module (3) comprises a control circuit board (13), a display screen (14), a button (15), a humidity detection module and a wire (16), wherein two ends of the wire (16) are electrically connected to the control circuit board (13) and the probe (2) respectively.

7. The hygrometer according to claim 6, characterized in that: The housing (1) comprises an upper shell (17) and a lower shell (18) assembled from top to bottom, the display screen (14) and the key (15) are exposed on the surface of the upper shell (17), the push button (4) is exposed on the surface of the lower shell (18), and a slide groove (7) for the push button (4) to move is provided on the lower shell (18).

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