Measurement and analysis instrument, instrument housing and its water retaining structure

Abstract

The utility model provides a kind of measuring and analysis instrument, instrument shell and its water retaining structure, water retaining structure includes water retaining eave, and water retaining eave includes pedestal and eave board;The pedestal of water retaining eave is detachably connected with the shell of measuring and analysis instrument, and the pedestal extends to the front side of shell;Eave board is located at the front end of pedestal, and protrudes upwards on pedestal;The rear side wall of eave board, the front side wall of shell and the upper surface of the front side extension part of pedestal to shell form a groove in enclosure.This utility model's processing mould structure does not need to set slider, can be realized only by split mould, cost is cheap, all outer surfaces of shell can be made into skin grain or other patterns, and appearance quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of detection instrument technology, specifically to a measuring and analyzing instrument, an instrument housing and its water-blocking structure. Background Technology

[0002] In existing measurement and analysis instruments, when using a water-retaining eaves structure on the movable door of the instrument, the water-retaining eaves structure is manufactured as an integral part of the instrument door structure of the instrument housing. If an additional soft water-retaining curtain structure is required, an additional structure for fixing the water-retaining curtain needs to be prepared on the door, or additional parts for fixing need to be added.

[0003] Since the water-retaining eaves structure and the instrument door structure are manufactured as a single piece, and since the water-retaining eaves have a raised structure, additional sliders need to be set on the mold for molding, which will increase the cost.

[0004] The existing traditional instrument door structure has a mold parting surface PS as shown in the figure. Figure 9b As shown, the parting direction of the two halves of the mold is as follows: Figure 9b As shown by the middle arrow, since the water-blocking eaves structure has an undercut with the mold opening direction, affecting direct demolding, the mold design includes a slider 400.

[0005] like Figure 10 As shown, the water-retaining eaves are equipped with a raised structure, i.e., an eaves plate, to prevent water flowing down the door from splashing out again. Obviously, the eaves plate structure will have an undercut with the mold opening direction. To achieve this undercut structure, a slider 400 needs to be designed. When the mold opens, the slider 400 first slides upwards to the position indicated by the dotted line, ensuring that the lower bottom surface 410 of the slider 400 is higher than the upper surface 122 of the eaves plate. Then, the slider 400 moves in the same direction as the mold opening direction, i.e., according to... Figure 10 First, it moves in direction ①, then in direction ②. Ultimately, because it moved in direction ①, it will form a shape like this... Figure 9a The shadowed slider travel space S1 causes obvious marks on the door. Existing technology can hardly hide the slider flash, and even strengthening the mold closing force cannot completely eliminate the slight break marks on the edge.

[0006] Since existing technology cannot avoid using sliders, when the slider's stroke direction is perpendicular to the instrument panel door surface, it is impossible to create a textured surface on the instrument panel door within the slider's stroke space S1, which is not conducive to appearance design.

[0007] When additional flexible water curtain structures are required on the instrument panel door, more complex sliding block structures are needed for molding, further increasing costs. Furthermore, the need for additional parts to secure the flexible water curtain adds extra parts management, assembly processes, and component costs.

[0008] Because the water-retaining eaves protrude from the surface, they are more prone to damage. In existing technology, when the water-retaining eaves are damaged, the entire instrument door structure needs to be replaced. Similarly, when the water curtain structure is damaged, the entire door structure needs to be replaced.

[0009] In view of this, the inventors of this application have designed a measuring and analyzing instrument, an instrument housing, and a water-blocking structure thereof. Utility Model Content

[0010] The technical problem to be solved by this utility model is to overcome the defect in the prior art that requires additional sliders to be set on the mold because the water-retaining eaves have a raised structure, and to provide a measuring and analyzing instrument, an instrument housing and its water-retaining structure.

[0011] The present invention solves the above-mentioned technical problems through the following technical solution:

[0012] This utility model provides a water-blocking structure for measuring and analyzing instruments, characterized in that the water-blocking structure includes a water-blocking eave, the water-blocking eave includes a base and an eave plate; the base of the water-blocking eave is detachably connected to the housing of the measuring and analyzing instrument, and the base extends towards the front side of the housing; the eave plate is located at the front end of the base and protrudes upward from the base; the rear side wall of the eave plate, the front side wall of the housing, and the upper surface of the portion of the base extending towards the front side of the housing enclose and form a groove.

[0013] According to one or more embodiments of the present invention, the housing includes an instrument door, and the base of the water-retaining eaves is detachably connected to the instrument door.

[0014] According to one or more embodiments of the present invention, the base is provided with a mating connection structure, and the housing is provided with a connection matching structure, wherein the connection matching structure and the mating connection structure are mutually matched.

[0015] According to one or more embodiments of the present invention, the mating connection structure is a dovetail groove or a dovetail tenon, and the connection matching structure is a dovetail tenon or a dovetail groove that matches the mating connection structure.

[0016] According to one or more embodiments of the present invention, the base is further provided with an anti-rotation structure, and when the water-blocking eaves are installed and connected to the housing, the anti-rotation structure abuts against the outer wall of the housing.

[0017] According to one or more embodiments of the present invention, the anti-rotation structure is disposed in the groove, and when the water-retaining eaves are installed and connected to the housing, the anti-rotation structure abuts against the front sidewall of the housing.

[0018] According to one or more embodiments of the present invention, the water-blocking structure further includes a water-blocking curtain, which is located below the water-blocking eaves. The water-blocking curtain includes a connecting part and a curtain; the connecting part is detachably connected to the water-blocking eaves.

[0019] According to one or more embodiments of the present invention, the water curtain is made of a soft material.

[0020] According to one or more embodiments of the present invention, the connecting part of the water curtain is provided with a C-shaped snap-fit ​​groove, and the rear side of the water curtain is provided with a snap-fit ​​groove connecting plate, the snap-fit ​​groove connecting plate protruding upward from the base; the C-shaped snap-fit ​​groove is fastened and wrapped around the snap-fit ​​groove connecting plate from top to bottom.

[0021] According to one or more embodiments of the present invention, a hook is provided at the lower part of the base of the water-blocking eaves, and a locking hole is provided at the lower part of the connecting part of the water-blocking curtain. The hook can be inserted into the locking hole to fix the water-blocking eaves and the water-blocking curtain.

[0022] This utility model also provides a housing for a measuring and analyzing instrument, characterized in that the housing includes a water-blocking structure for the measuring and analyzing instrument as described above.

[0023] This utility model also provides a measuring and analyzing instrument, characterized in that the measuring and analyzing instrument includes a measuring and analyzing instrument housing as described above, and the measuring and analyzing instrument housing is disposed on the wiring port side of the measuring and analyzing instrument.

[0024] The measuring and analytical instrument, instrument housing, and its water-blocking structure of this utility model have at least the following advantages:

[0025] I. Compared with the traditional structure, the detachable design of the water-blocking structure and the instrument housing of this utility model makes the mold structure of the water-blocking structure and the instrument housing simple. The molds of the two parts, the instrument housing and the water-blocking eaves structure, do not require other sliding block or inclined top structures, but only split molds, which is inexpensive.

[0026] Second, compared with the traditional structure, the water-blocking structure design of this utility model allows all the outer surfaces of the instrument housing to be made into leather texture or other patterns, which can improve the appearance quality.

[0027] Third, the water-blocking structure of this utility model can simultaneously fix and flatten the water curtain by simply fixing the water-blocking eaves, while the traditional structure requires an additional flattening and clamping structure.

[0028] Fourth, the dual active waterproofing system, consisting of the eaves drainage groove and the detachable soft water curtain, achieves a balance of efficient water drainage, reliable sealing and convenient maintenance, and has the comprehensive advantages of simplified molds, optimized appearance and strong environmental adaptability. Attached Figure Description

[0029] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0030] Figure 1 This is a perspective view of an embodiment of the housing of the measuring and analyzing instrument of this utility model.

[0031] Figure 2 This is a schematic diagram of the connection and matching structure of an embodiment of the housing of the measuring and analyzing instrument of this utility model.

[0032] Figure 3 This is a top-view perspective three-dimensional schematic diagram of the water-retaining eaves structure in one embodiment of the water-retaining structure for measuring and analyzing instruments of this utility model.

[0033] Figure 4 This is a three-dimensional schematic diagram of the water-retaining eaves structure from an upward angle in one embodiment of the water-retaining structure for measuring and analyzing instruments according to this utility model.

[0034] Figure 5 This is a top-view perspective three-dimensional schematic diagram of a water-blocking curtain structure in one embodiment of the water-blocking structure for measuring and analyzing instruments of this utility model.

[0035] Figure 6 This is a three-dimensional schematic diagram of the water curtain structure from an upward angle in one embodiment of the water-blocking structure for measuring and analyzing instruments according to this utility model.

[0036] Figure 7 This is a first cross-sectional view of an embodiment of the water-blocking structure for measuring and analyzing instruments according to the present invention, in its assembled state.

[0037] Figure 8 This is a second cross-sectional view of an embodiment of the water-blocking structure for measuring and analyzing instruments according to this utility model, showing the assembly state.

[0038] Figure 9a This is a structural diagram of an instrument door with a water-retaining eaves in the prior art.

[0039] Figure 9b This is a schematic diagram of the mold opening for an instrument door with a water-retaining eave in the prior art.

[0040] Figure 10 This is a schematic diagram of the sliding block movement direction after the instrument door with a water-retaining eaves is opened in the prior art.

[0041] [Attached image labels]

[0042] 100. Water-retaining eaves

[0043] 110. Base

[0044] 111. Matching connection structure

[0045] 112. Anti-rotation structure

[0046] 113. Hook

[0047] 120. Eaves

[0048] 121. Trench

[0049] 122. The upper surface of the eaves board

[0050] 130. Snap-on slot connecting plate

[0051] 131. Depression

[0052] 200. Instrument panel door

[0053] 210. Connection Matching Structure

[0054] 300. Water curtain

[0055] 310. Connecting parts

[0056] 311. C-type card slot

[0057] 312. Card hole

[0058] 313. Structural planes

[0059] 320. Door Curtain

[0060] 400, slider

[0061] 410. The bottom surface of the slider Detailed Implementation

[0062] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0063] Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used in all drawings to denote the same or similar parts. Furthermore, although the terminology used in this invention is selected from commonly known and used terminology, some terms mentioned in this specification may have been chosen by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of the description herein. Moreover, the invention should be understood not only by the actual terminology used, but also by the meaning implied by each term. Also, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale.

[0064] It should be noted that in this utility model, the terms "front", "rear", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0065] See Figures 1-8 The present invention provides a water-blocking structure for measuring and analyzing instruments, characterized in that the water-blocking structure includes a water-blocking eave 100, which includes a base 110 and an eaves plate 120.

[0066] The base 110 of the water-retaining eaves 100 is detachably connected to the housing of the measuring and analyzing instrument, and the base 110 extends towards the front of the housing;

[0067] The eaves plate 120 is located at the front end of the base 110 and protrudes upward from the base 110; the rear side wall of the eaves plate 120, the front side wall of the shell, and the upper surface of the portion of the base 110 extending towards the front of the shell form a groove 121.

[0068] Preferably, the housing of the measuring and analyzing instrument includes a box, an instrument door 200, a side panel, a rear panel, and other parts of the housing, that is, the base 110 of the water-retaining eaves 100 can be detachably connected to one or more of the above-mentioned housing parts.

[0069] Preferably, the base 110 of the water-retaining eaves 100 can be detachably connected to the housing of the measuring and analyzing instrument using a tenon-and-mortise structure, a snap-fit ​​structure, or the like. After the water-retaining eaves 100 are installed and connected to the housing, the water-retaining eaves 100 and the housing automatically enclose to form a groove 121. The groove 121 can be used to guide water, actively intercepting, changing, and diverting the water flow. The upward-protruding eaves 120 can block the water flow, while the groove 121 can collect and guide the water flow to both sides.

[0070] This invention features a detachable connection between the water-retaining eaves 100 and the housing, eliminating the need for a slider 400 in the mold structure of the water-retaining eaves 100 and the housing. This can be achieved solely through a split mold, resulting in lower costs. Furthermore, since the slider 400 is unnecessary, all outer surfaces of the housing can be textured with leather or other patterns, enhancing its appearance compared to traditional instrument housing structures.

[0071] This utility model is a water-blocking structure for measuring and analyzing instruments, applicable to the pharmaceutical, biochemical, water treatment, beer, beverage and other food production industries. It can be used in measuring and analyzing instruments for multiple parameters such as pH, conductivity, and dissolved oxygen.

[0072] See Figures 1-8 As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, the housing includes an instrument door 200, and the base of the water-blocking eaves 100 is detachably connected to the instrument door 200.

[0073] It should be noted that, since the instrument door 200 is usually located at the wiring or connection point of the measuring and analytical instrument, the purpose of setting the water-retaining eaves 100 to the instrument door 200 of the housing of the measuring and analytical instrument is to provide a water-draining function for the opening position of the wiring or connection point of the measuring and analytical instrument.

[0074] See Figure 2 , Figure 3 and Figure 7 As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, a mating connection structure 111 is provided on the base 110, and a connecting matching structure 210 is provided on the shell, wherein the connecting matching structure 210 and the mating connection structure 111 are mutually matched.

[0075] It should be noted that the matching structure 210 and the mating connection structure 111 are matched with each other, which can be either a matching of structural shapes or a matching of physical forces. The matching of structural shapes includes a pair of interlocking connection structures, and the matching of physical forces includes the connection method between the permanent magnet and the magnetic conductive material.

[0076] Preferably, the connecting structure 111 and the matching structure 210 can be configured as a dovetail joint and dovetail tenon, a snap fastener and a slot, or a pair of magnets. Through the matching connection of the connecting structure 111 and the matching structure 210, the water-retaining eaves 100 can be easily disassembled from the housing.

[0077] See Figure 2 , Figure 3 and Figure 7As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, the mating connection structure 111 is a dovetail groove or a dovetail tenon, and the connecting matching structure 210 is a dovetail tenon or a dovetail groove that matches the mating connection structure 111.

[0078] Dovetail grooves and dovetail tenons can be easily installed by sliding insertion and are sturdy.

[0079] See Figure 3 and Figure 8 As a preferred embodiment of the water-blocking structure for measuring and analyzing instruments of this utility model, the base 110 is also provided with an anti-rotation structure 112. When the water-blocking eaves 100 are installed and connected to the housing, the anti-rotation structure 112 abuts against the outer wall of the housing.

[0080] It should be noted that the anti-rotation structure 112 abuts against the outer wall of the shell, which can be either the front or rear side wall of the shell, or the anti-rotation structure 112 abuts against both the front and rear side walls of the shell. The anti-rotation structure 112 abuts against the outer wall of the shell, which can prevent the water-retaining eaves 100 from rotating in the corresponding direction.

[0081] See Figure 3 and Figure 8 As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, the anti-rotation structure 112 is provided in the groove 121. When the water-blocking eaves 100 are installed and connected to the housing, the anti-rotation structure 112 abuts against the front side wall of the housing.

[0082] The anti-rotation structure 112 presses against the front side wall of the shell, preventing the water-retaining eaves 100 from rotating along the edge of the shell. Figure 8 The middle arrow R rotates clockwise. Because in Figure 8 In the embodiment, the rear side of the water-blocking eaves 100 has a snap-fit ​​connecting plate 130 that works with the C-shaped snap-fit ​​groove 311 of the water-blocking curtain 300 to prevent the water-blocking eaves 100 from rotating counterclockwise. Therefore, it is only necessary to set the anti-rotation structure 112 on the front side of the housing, and there is no need to set the anti-rotation structure 112 on the rear side of the housing.

[0083] See Figures 5-8 As a preferred embodiment of the water-blocking structure for measuring and analyzing instruments of this utility model, the water-blocking structure also includes a water-blocking curtain 300, which is located below the water-blocking eaves 100. The water-blocking curtain 300 includes a connecting part 310 and a curtain 320; the connecting part 310 is detachably connected to the water-blocking eaves 100.

[0084] The detachable connection between the connecting part 310 and the water-retaining eaves 100 can be a snap-on connection or a magnetic connection.

[0085] As a preferred embodiment of the water-blocking structure for measuring and analyzing instruments of this utility model, the water-blocking curtain 300 is made of soft material.

[0086] The water curtain 300 is made of soft material and can be easily installed and removed from the water curtain 100. The curtain 320, made of soft material, can block water without obstructing the wiring of measuring and analyzing instruments.

[0087] See Figures 3-8 As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, the connecting part 310 of the water curtain 300 is provided with a C-shaped snap-fit ​​groove 311, and the rear side of the water-blocking eaves 100 is provided with a snap-fit ​​groove connecting plate 130, which protrudes upward from the base 110; the C-shaped snap-fit ​​groove 311 is fastened and wrapped around the snap-fit ​​groove connecting plate 130 from top to bottom.

[0088] Preferably, the structure of the C-shaped snap-fit ​​groove 311 and the snap-fit ​​groove connecting plate 130 is hidden on the rear side of the housing, so as not to affect the aesthetics of the front.

[0089] like Figure 3 As shown, a recessed portion 131 is provided on the front side of the snap-fit ​​connecting plate 130 to accommodate the C-shaped snap-fit ​​groove 311. This not only prevents the C-shaped snap-fit ​​groove 311 from sliding, but also increases the aesthetics of the connection structure.

[0090] See Figures 3-8 As a preferred embodiment of the water-blocking structure of the present invention for measuring and analyzing instruments, a hook 113 is provided at the lower part of the base 110 of the water-blocking eaves 100, and a locking hole 312 is provided at the lower part of the connecting part 310 of the water-blocking curtain 300. The hook 113 can be inserted into the locking hole 312 to fix the water-blocking eaves 100 and the water-blocking curtain 300.

[0091] In a specific embodiment of the water-blocking structure for measuring and analyzing instruments of this utility model, its assembly method with the instrument door 200 of the housing is as follows:

[0092] First, install the water curtain 300 onto the water barrier 100. Then, cover and assemble the C-shaped locking groove 311 of the water curtain 300 and the locking groove connecting plate 130 of the water barrier 100. Next, utilize the soft material of the water curtain 300 to pass through the locking holes 312 of the water curtain 300, finally hooking onto the structural surface 313 of the connecting part 310 of the water curtain 300, completing the assembly of the water curtain 300 and the water barrier 100. The structure after assembly is as follows. Figure 7 and Figure 8As shown, the water curtain 300 is inserted into and wraps around the snap-fit ​​connecting plate 130 of the water-retaining eaves 100 via a C-shaped snap-fit ​​groove 311. The rigidity of the snap-fit ​​connecting plate 130 ensures the overall flatness of the water curtain 300, which is made of soft material. Additionally, the C-shaped snap-fit ​​groove 311 of the water curtain 300 conceals the water-retaining eaves 100, improving its appearance. The engagement state of the hooks 113 of the water-retaining eaves 100 with the snap holes 312 of the water curtain 300 is visible. Figure 7 .

[0093] After assembly, the water-blocking structure is then passed through, as follows Figure 3 The dovetail groove shown, and Figure 2 The dovetail tenons shown fit together as follows: Figure 1 Slide the assembly in direction D as shown, and finally assemble it as follows. Figure 1 The instrument door 200 shown includes a water-retaining eaves 100 and a water-retaining curtain 300. After assembly, the dovetail tenons of the instrument door 200 and the dovetail grooves of the water-retaining eaves 100 are as shown... Figure 7 As shown, the relative relationship between the C-shaped snap-fit ​​groove 311 of the final water curtain 300, the snap-fit ​​groove connecting plate 130 of the water baffle 100, and the instrument door 200 is evident. Figure 7 The anti-rotation structure 112 of the water-retaining eaves 100 is as follows: Figure 8 As shown, its function is to prevent the water-retaining eaves 100 structure from rotating after assembly by pressing against the outer wall of the instrument door 200 with the anti-rotation structure 112. Figure 8 Rotating in the direction of arrow R serves a stabilizing function.

[0094] The water-blocking structure of this utility model for measuring and analyzing instruments has the following advantages:

[0095] I. Compared with the traditional structure, the detachable design of the water-blocking structure and the instrument housing of this utility model makes the mold structure of the water-blocking structure and the instrument housing simple. The molds of the two parts, the instrument housing and the water-blocking eaves structure, do not require other sliding block or inclined top structures, but only split molds, which is inexpensive.

[0096] Second, compared with the traditional structure, the water-blocking structure design of this utility model allows all the outer surfaces of the instrument housing to be made into leather texture or other patterns, which can improve the appearance quality.

[0097] Third, the water-blocking structure of this utility model can simultaneously fix and flatten the water curtain by simply fixing the water-blocking eaves, while the traditional structure requires an additional flattening and clamping structure.

[0098] This utility model also provides a housing for a measuring and analyzing instrument, the housing including the water-blocking structure for the measuring and analyzing instrument as described above.

[0099] This utility model also provides a measuring and analyzing instrument, which includes the measuring and analyzing instrument housing as described above, and the measuring and analyzing instrument housing is disposed on the wiring port side of the measuring and analyzing instrument.

[0100] This utility model relates to a housing for measuring and analyzing instruments, as well as the measuring and analyzing instruments themselves. These instruments are applicable to the pharmaceutical, biochemical, water treatment, and food production industries, including beer and beverage manufacturing. The measuring and analyzing instruments can measure and analyze multiple parameters such as pH, conductivity, and dissolved oxygen. Because the use of these measuring and analyzing instruments involves the risk of splashing chemical reagents or other liquids, a housing structure is required on the side of the connection port for protection.

[0101] This utility model discloses a measuring and analytical instrument and its housing. Through the integration of a multi-layered waterproof system consisting of a water-retaining eave and a soft water-retaining curtain, it achieves superior protective performance. The eaves and groove structure at the front of the water-retaining eave actively intercept and guide water flow, effectively preventing liquid from spreading to door seams. The detachable soft water-retaining curtain forms a reliable seal, significantly enhancing waterproofing capabilities with this dual protection. Simultaneously, the detachable design, with a simple dovetail tenon joint connecting the water-retaining structure and the housing, ensures overall structural strength while facilitating assembly and maintenance. This also simplifies the mold structure for both the water-retaining structure and the instrument housing, allowing for future design flexibility in the housing's appearance, and enhancing the instrument's durability and reliability in complex environments.

[0102] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water-blocking structure for measuring and analyzing instruments, characterized in that, The water-blocking structure includes a water-blocking eaves, and the water-blocking eaves include a base and an eaves board; The base of the water-retaining eaves is detachably connected to the housing of the measuring and analyzing instruments, and the base extends towards the front of the housing; The eaves are located at the front end of the base and protrude upward from the base; the rear sidewall of the eaves, the front sidewall of the shell, and the upper surface of the portion of the base extending towards the front of the shell form a groove.

2. The water-blocking structure for measuring and analyzing instruments as described in claim 1, characterized in that, The housing includes an instrument door, and the base of the water-retaining eaves is detachably connected to the instrument door.

3. The water-blocking structure for measuring and analyzing instruments as described in claim 1, characterized in that, The base is provided with a mating connection structure, and the housing is provided with a connection matching structure, wherein the connection matching structure and the mating connection structure are mutually matched.

4. The water-blocking structure for measuring and analyzing instruments as described in claim 3, characterized in that, The mating connection structure is a dovetail groove or a dovetail tenon, and the connection matching structure is a dovetail tenon or a dovetail groove that matches the mating connection structure.

5. The water-blocking structure for measuring and analyzing instruments as described in claim 3, characterized in that, The base is also provided with an anti-rotation structure. When the water-retaining eaves are installed and connected to the shell, the anti-rotation structure presses against the outer wall of the shell.

6. The water-blocking structure for measuring and analyzing instruments as described in claim 5, characterized in that, The anti-rotation structure is disposed in the groove, and when the water-retaining eaves are installed and connected to the housing, the anti-rotation structure abuts against the front side wall of the housing.

7. The water-blocking structure for measuring and analyzing instruments as described in claim 1, characterized in that, The water-blocking structure also includes a water-blocking curtain, which is located below the water-blocking eaves. The water-blocking curtain includes a connecting part and a curtain; the connecting part is detachably connected to the water-blocking eaves.

8. The water-blocking structure for measuring and analyzing instruments as described in claim 7, characterized in that, The water curtain is made of soft material.

9. The water-blocking structure for measuring and analyzing instruments as described in claim 7, characterized in that, The connecting part of the water curtain is provided with a C-shaped snap-fit ​​groove, and the rear side of the water curtain is provided with a snap-fit ​​groove connecting plate, which protrudes upward from the base; the C-shaped snap-fit ​​groove is fastened and wrapped around the snap-fit ​​groove connecting plate from top to bottom.

10. The water-blocking structure for measuring and analyzing instruments as described in claim 7, characterized in that, The base of the water-blocking eaves is provided with a hook, and the connecting part of the water-blocking curtain is provided with a locking hole. The hook can be inserted into the locking hole to fix the water-blocking eaves and the water-blocking curtain.

11. A housing for a measuring and analyzing instrument, characterized in that, The housing of the measuring and analyzing instrument includes a water-retaining structure for the measuring and analyzing instrument as described in any one of claims 1-10.

12. A measuring and analyzing instrument, characterized in that, The measuring and analyzing instrument includes the measuring and analyzing instrument housing as described in claim 11, the measuring and analyzing instrument housing being disposed on the wiring port side of the measuring and analyzing instrument.

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