Liquid level gauge

Abstract

This application provides a liquid level gauge, relating to the field of vehicle technology. The liquid level gauge includes a gauge body and a float assembly. The gauge body is provided with a first slide groove, a second slide groove, a one-way slide groove, and a third slide groove, which are connected end-to-end to form an annular slide groove. The float assembly includes a sliding member and a float body. When using this application, the float body, driven by the buoyancy of the liquid to be measured in the container, will move the sliding member from the bottom to the top of the one-way slide groove. After the user completes the measurement, the position of the sliding member on the one-way slide groove will not change. The user can then determine the liquid level height in the container by observing the position of the scale markings corresponding to the float body. By using the liquid level gauge of this application embodiment, the liquid level height of the coolant in the tank can be measured, making it convenient for users to quickly determine the liquid level height in the tank.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a liquid level gauge. Background Technology

[0002] The expansion tank (also known as the expansion reservoir, auxiliary water tank, or compensating water tank) is an important component of the automotive engine cooling system, used to hold coolant.

[0003] Currently, the location of the expansion tank in vehicles varies. During vehicle operation, problems such as expansion tank aging and debris covering the tank can occur, making it impossible to observe the coolant level in the expansion tank during after-sales vehicle maintenance. Utility Model Content

[0004] This application provides a liquid level gauge to solve the technical problem of not being able to observe the coolant level in the expansion tank during after-sales vehicle maintenance.

[0005] This application provides a liquid level gauge, including:

[0006] The ruler body is provided with scale markings arranged from the bottom end to the top end of the ruler body. The ruler body is provided with a first sliding groove, a second sliding groove, a one-way sliding groove and a third sliding groove. The first sliding groove, the second sliding groove, the one-way sliding groove and the third sliding groove are connected end to end to form an annular sliding groove. The extension direction of the first sliding groove and the one-way sliding groove is the same as that from the bottom end to the top end of the ruler body.

[0007] A float assembly includes a slider and a float body. The slider is slidably connected to the annular groove, and the float body is disposed on the slider. The one-way groove allows the slider to pass unidirectionally from the bottom end to the top end of the scale. The float body is configured such that, when located at the bottom end of the one-way groove and placed into a test container, the buoyancy of the test liquid in the test container drives the slider to move from the bottom end to the top end of the scale on the one-way groove, and stops moving when it is located on the surface of the test liquid.

[0008] In one possible implementation, a unidirectional barb group is provided on at least one sidewall of the unidirectional groove extending in the direction of extension. The unidirectional barb group includes a plurality of unidirectional barbs, and each of the unidirectional barbs in the unidirectional barb group is arranged sequentially at intervals along the direction of extension of the unidirectional groove. The unidirectional barbs are used to allow the slider to pass unidirectionally from the bottom end of the unidirectional groove to the top end of the unidirectional groove.

[0009] In one possible implementation, a spacer plate and a connector are also included. The annular groove extends through the ruler body along its thickness direction to form an annular through groove. The spacer plate is disposed within the annular through groove to form the inner annular wall of the annular through groove. The spacer plate is connected to the ruler body via the connector.

[0010] In one possible implementation, the connector is a connecting plate with a clearance opening configured to avoid the float assembly when the slider slides on the annular groove.

[0011] In one possible implementation, a fixing plate is also included, the surface of which is perpendicular to the extension direction from the bottom end to the top end of the ruler.

[0012] In one possible implementation, the fixing plate is perpendicular to the ruler body.

[0013] In one possible implementation, the fastener includes at least one hook for engaging with the container opening along the wall of the container to be tested.

[0014] In one possible implementation, an indicator plate is also included, the sliding element is a sliding rod, one end of the sliding rod is connected to the float body, the sliding rod passes through the annular through groove, and one end of the sliding rod extends out of one side of the annular through groove and is connected to the float body, and the other end of the sliding rod extends out of the other side of the annular through groove and is connected to the indicator plate.

[0015] In one possible implementation, the surface of the indicator plate is perpendicular to the extension direction from the bottom end to the top end of the ruler.

[0016] In one possible implementation, the unidirectional barbs in the unidirectional barb group are distributed at equal intervals.

[0017] This application provides a liquid level gauge. A sliding element is connected to the top of the one-way chute via a unidirectional chute. Because a float is mounted on the sliding element, when using the gauge, the float, driven by the buoyancy of the liquid in the container, moves the sliding element from the bottom to the top of the unidirectional chute, i.e., upwards relative to the chute. When the float is on the surface of the liquid, it stops moving upwards relative to the chute. After measurement, when the gauge is removed from the container, the sliding element does not move downwards relative to the chute. Since the float is not under buoyancy at this point, its position on the chute remains unchanged. The user can then determine the liquid level by observing the position of the scale markings on the float. When the liquid level gauge of this application needs to be used again, the user can first manually move the slider located on the one-way slide upwards until it reaches the top of the one-way slide. Then, the slider is moved from the top of the one-way slide to the third slide. Next, the slider located on the third slide is moved sequentially to the first and second slides. Finally, the slider on the second slide is moved to the bottom of the one-way slide to complete the movement of the slider. The liquid level of the liquid to be tested in the container can then be measured. By using the liquid level gauge of this application, the liquid level in the container to be tested in the vehicle can be measured, solving the technical problem that the liquid level of the coolant in the container to be tested cannot be observed. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 A schematic diagram of the structure of a liquid level gauge provided for an embodiment of this application;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0022] Figure 4 for Figure 1 A structural diagram from another angle;

[0023] Figure 5 for Figure 1 Another structural diagram from a different angle;

[0024] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0025] Figure 7 This is a schematic diagram of the structure of a liquid level gauge used to measure a container in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10 - Container to be tested;

[0028] 100 - Ruler body; 110 - Scale markings;

[0029] 200 - Annular groove; 210 - First groove; 220 - Second groove; 230 - Unidirectional groove; 240 - Third groove;

[0030] 300 - Float assembly; 310 - Slider; 320 - Float body;

[0031] 400 - One-way barbs;

[0032] 500-Spare plate;

[0033] 600 - Connector; 610 - Clearance opening;

[0034] 700 - Fixing plate; 710 - Fixing component;

[0035] 800 - Indicator Panel.

[0036] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, and a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0041] The expansion tank (also known as the expansion reservoir, auxiliary water tank, or compensating water tank) is an important component of the automotive engine cooling system. Its core function is to dynamically adjust the coolant volume by accommodating volume fluctuations caused by temperature changes (expansion when heated, contraction when cooled).

[0042] Currently, the location of the expansion tank in vehicles varies, especially in various pure electric vehicles. During vehicle operation, problems such as expansion tank aging and debris covering the tank occur, making it impossible to observe the coolant level in the expansion tank during after-sales vehicle maintenance.

[0043] To address the technical problem of not being able to observe the coolant level in the expansion tank during after-sales vehicle maintenance, this application proposes a coolant level gauge. The gauge includes a gauge body and a float assembly. The gauge body has graduations arranged from the bottom to the top of the gauge body. The gauge body also has a first groove, a second groove, a one-way groove, and a third groove, which are sequentially connected end-to-end to form an annular groove. The extension directions of the first groove and the one-way groove are both parallel to the direction from the bottom to the top of the gauge body. The top ends of the scale bodies are in the same direction; the float assembly includes a slider and a float body. The slider is slidably connected to the annular groove, and the float body is disposed on the slider. The one-way groove is used to allow the slider to pass unidirectionally from the bottom end to the top end of the scale body. The float body is configured such that when it is located at the bottom end of the one-way groove and is placed into the container to be tested, under the buoyancy drive of the liquid to be tested in the container to be tested, it drives the slider to move from the bottom end to the top end of the scale body on the one-way groove. When it is located on the surface of the liquid to be tested, it stops moving.

[0044] When using the liquid level gauge of this application, first slide the sliding member on the annular groove, causing the sliding member to drive the float to the bottom of the one-way groove. Then, vertically place the entire liquid level gauge from the bottom to the top of the gauge into the container to be measured, so that the bottom of the gauge rests against the bottom wall of the container. During this process, driven by the buoyancy of the liquid to be measured in the container, the float will drive the sliding member to move from the bottom to the top of the one-way groove, that is, move upward relative to the one-way groove. When the float is on the surface of the liquid to be measured, the float will stop moving upward relative to the one-way groove, thus the sliding member can no longer move upward. The slider moves upward relative to the one-way chute. Because of the one-way chute, the slider can only move upward on the one-way chute and cannot move downward. When the user finishes the measurement and pulls the entire liquid level gauge out of the container, the slider will not move downward relative to the one-way chute. Since the float is not subjected to buoyancy at this time, the position of the slider on the one-way chute will not change, that is, the position of the float will not change. Then, the user can determine the liquid level height in the container by observing the position of the scale mark corresponding to the float.

[0045] When the liquid level gauge of this application needs to be used again, the user can first manually move the slider located on the one-way slide upwards until it reaches the top of the one-way slide. Then, the slider is moved from the top of the one-way slide to the third slide. Next, the slider located on the third slide is moved sequentially to the first and second slides. Finally, the slider on the second slide is moved to the bottom of the one-way slide to complete the movement of the slider. The liquid level of the liquid to be tested in the container can then be measured. By using the liquid level gauge of this application, the liquid level of the coolant in the expansion tank can be measured, solving the technical problem that the liquid level of the coolant in the expansion tank cannot be observed during after-sales vehicle maintenance.

[0046] The technical solution of the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0047] In the embodiments of this application, reference is made to Figures 1 to 3 As shown, an embodiment of this application provides a liquid level gauge, including a gauge body 100 and a float assembly 300.

[0048] The ruler body 100 is provided with scale markings 110, which are arranged from the bottom end to the top end of the ruler body 100. The ruler body 100 is provided with a first sliding groove 210, a second sliding groove 220, a one-way sliding groove 230 and a third sliding groove 240. The first sliding groove 210, the second sliding groove 220, the one-way sliding groove 230 and the third sliding groove 240 are connected end to end to form an annular sliding groove 200. The extension direction of the first sliding groove 210 and the one-way sliding groove 230 is the same as that from the bottom end to the top end of the ruler body 100.

[0049] The float assembly 300 includes a slider 310 and a float body 320. The slider 310 is slidably connected to the annular groove 200, and the float body 320 is disposed on the slider 310. The one-way groove 230 is used to allow the slider 310 to pass unidirectionally from the bottom end to the top end of the ruler 100. The float body 320 is configured such that when it is located at the bottom end of the one-way groove 230 and is placed into the test container 10, the buoyancy of the test liquid in the test container 10 drives the slider 310 to move from the bottom end to the top end of the ruler 100 on the one-way groove 230. When it is located on the surface of the test liquid, it stops moving.

[0050] In the liquid level gauge of this application embodiment, the length direction of the gauge body 100 is from the bottom end to the top end of the gauge body 100. The gauge body 100 is provided with scale markings 110 along its length direction. The scale markings 110 include equally spaced scale lines and numerical markings corresponding to the scale lines.

[0051] Specifically, the graduation value of scale mark 110 is 1mm, and the measuring range can be 0–300mm.

[0052] It should be noted that the scale division and range can be adjusted and set as needed.

[0053] The ruler 100 is provided with a first slide groove 210, a second slide groove 220, a one-way slide groove 230 and a third slide groove 240. The first slide groove 210, the second slide groove 220, the one-way slide groove 230 and the third slide groove 240 are connected end to end to form an annular slide groove 200. The extension direction of the first slide groove 210 and the one-way slide groove 230 is the same as the direction from the bottom end to the top end of the ruler 100. That is, the extension direction of the first slide groove 210 and the one-way slide groove 230 is the length direction of the ruler 100, that is, the up and down direction. When measuring the liquid level, the extension direction of the first slide groove 210 and the one-way slide groove 230 is the same as the height direction of the liquid level.

[0054] The slider 310 is slidably connected to the annular groove 200, meaning that the slider 310 can slide on the annular groove 200. When the slider 310 slides onto the one-way groove 230, the slider 310 can only move from the bottom end of the one-way groove 230 to the top end of the one-way groove 230. That is, the one-way groove 230 makes the slider 310 only able to move upward on the one-way groove 230 and not downward on the one-way groove 230.

[0055] It should be noted that the slider 310 can move freely on the first slide groove 210, the second slide groove 220 and the third slide groove 240 without any unidirectional restriction. The slider 310 can only enter the bottom of the unidirectional slide groove 230 from the second slide groove 220 and then pass into the unidirectional slide groove 230. It cannot enter the unidirectional slide groove 230 from the top of the unidirectional slide groove 230.

[0056] Driven by the buoyancy of the liquid to be tested in the test container 10, the float 320 will float on the surface of the liquid to be tested. It should be noted that the density of the float 320 is less than the density of the liquid to be tested, so as to ensure that the float 320 can float on the surface of the liquid to be tested.

[0057] Specifically, the float body 320 can be a hollow shell structure.

[0058] Reference Figure 1 and Figure 7As shown, when using the liquid level gauge of this application, firstly, slide the sliding member 310 on the annular groove 200, so that the sliding member 310 drives the float 320 to slide to the bottom of the one-way groove 230. Then, vertically place the entire liquid level gauge from the bottom to the top of the gauge body 100 into the container 10 to be measured, so that the bottom of the gauge body 100 abuts against the bottom wall of the container 10. During this process, driven by the buoyancy of the liquid to be measured in the container 10, the float 320 will drive the sliding member 310 to move from the bottom to the top of the one-way groove 230, that is, move upward relative to the one-way groove 230. When the float 320 is on the surface of the liquid to be measured, the float 320 will stop moving upward relative to the one-way groove 230, thus the sliding member... 310 can no longer move upward relative to the one-way chute 230. Furthermore, because the one-way chute 230 allows the slider 310 to only move unidirectionally from the bottom to the top of the one-way chute 230, it can only move upward and not downward. When the user completes the measurement and pulls the entire level gauge out of the container 10, the slider 310 will not move downward relative to the one-way chute 230. Since the float 320 is not subjected to buoyancy at this time, the position of the slider 310 on the one-way chute 230 will not change, meaning the position of the float 320 will not change. The user can then determine the liquid level height in the container 10 by observing the position of the scale mark 110 corresponding to the float 320.

[0059] When the liquid level gauge of this application needs to be used again, the user can first manually move the slider 310 located on the one-way slide 230 upwards until the slider 310 reaches the top of the one-way slide 230. Then, the slider 310 is moved from the top of the one-way slide 230 to the third slide 240. Then, the slider 310 located on the third slide 240 is moved sequentially to the first slide 210 and the second slide 220. Finally, the slider 310 on the second slide 220 is moved to the bottom of the one-way slide 230 to complete the movement of the slider 310. Then, the liquid level of the liquid to be tested in the test container 10 can be measured. By using the liquid level gauge of this application embodiment, the liquid level of the coolant in the expansion tank can be measured, solving the technical problem that the liquid level of the coolant in the expansion tank cannot be observed during after-sales vehicle maintenance.

[0060] In other embodiments, refer to Figure 2 and Figure 3As shown, at least one sidewall of the one-way groove 230 is provided with a one-way barb group. The one-way barb group includes a plurality of one-way barbs 400. The one-way barbs 400 in the one-way barb group are arranged sequentially at intervals along the extension direction of the one-way groove 230. The one-way barbs 400 are used to allow the sliding member 310 to pass unidirectionally from the bottom end of the one-way groove 230 to the top end of the one-way groove 230.

[0061] In this embodiment, the one-way groove 230 enables the one-way passage of the sliding member 310 by providing a one-way barb group on the side wall.

[0062] Specifically, the one-way barb 400 includes a root fixedly connected to the side wall of the one-way groove 230 and a tip extending into the one-way groove 230. The side of the one-way barb 400 facing the bottom of the one-way groove 230 is an inclined surface, and the angle between the inclined surface and the side wall of the one-way groove 230 can be 30° to 60°. When the slider 310 moves upward, the one-way barb 400 undergoes elastic deformation under the action of tangential force, allowing the slider 310 to pass upward. When the slider 310 moves downward, the one-way barb 400 abuts against the slider 310 due to the rigid support of the root, forming a mechanical self-locking, which prevents the slider 310 from moving downward.

[0063] Furthermore, the unidirectional barb 400 is made of a high elastic modulus material such as spring steel or PEEK engineering plastic. When the slider 310 moves upward, it bends temporarily and returns to its original shape after passing through. When the slider 310 moves downward, the material rigidity and barb angle prevent it from rebounding, forming a physical blockage that prevents the slider 310 from moving downward.

[0064] In one embodiment, reference is made to... Figure 2 As shown, it also includes a spacer plate 500 and a connector 600. The annular groove 200 penetrates the ruler body 100 to form an annular through groove. The spacer plate 500 is disposed in the annular through groove to form the inner ring wall of the annular through groove. The spacer plate 500 is connected to the ruler body 100 through the connector 600.

[0065] The annular groove 200 can have a bottom wall. When the annular groove 200 does not have a bottom wall, the annular groove 200 forms an annular through groove that penetrates the ruler body 100.

[0066] In this embodiment, the annular groove 200 is an annular through groove penetrating the ruler body 100. Specifically, the first groove 210 penetrates the ruler body 100 to form the first through groove, the second groove 220 penetrates the ruler body 100 to form the second through groove, the third groove 240 penetrates the ruler body 100 to form the third through groove, and the unidirectional groove 230 penetrates the ruler body 100 to form the fourth through groove. The spacer plate 500 is disposed between the first through groove and the fourth through groove and between the second through groove and the third through groove to form the sidewall of the first groove 210 near the fourth through groove, the sidewall of the fourth groove near the first through groove, the sidewall of the second groove 220 near the third through groove, and the sidewall of the third groove 240 near the second through groove. The spacer plate 500 is connected to the ruler body 100 by the connector 600, and the connector 600 fixes and positions the spacer plate 500.

[0067] Because the annular groove 200 penetrates the ruler body 100 to form an annular through groove, it is convenient for the user to adjust the position of the slider 310 on the annular through groove, and to make it convenient for the user to quickly slide the slider 310 to the bottom of the one-way groove 230.

[0068] In some embodiments, reference is made to Figure 2 As shown, the connector 600 is a connecting plate, and the connecting plate is provided with a clearance opening 610. The clearance opening 610 is configured to avoid the float assembly 300 when the slider 310 slides on the annular groove 200.

[0069] The connector 600 can be a connecting rod, a connecting bolt, a connecting buckle, etc. In this embodiment, the connector 600 is a connecting plate, and the connecting plate is provided with a clearance opening 610. When the sliding member 310 slides on the annular groove 200 to the position of the connecting plate, the clearance opening 610 avoids the float assembly 300, so as to prevent the connecting plate from blocking the float assembly 300.

[0070] In other possible embodiments, refer to Figure 5 As shown, it also includes a fixing plate 700, which is disposed on the top of the ruler 100. The fixing plate 700 is provided with a fixing member 710, which is used to connect with the container to be measured 10 to fix the ruler 100.

[0071] In this embodiment, when the ruler 100 is placed into the container 10 to be tested and the bottom end of the ruler 100 is pressed against the bottom wall of the container 10, the fixing member 710 on the fixing plate 700 is connected to the container 10 to be tested, thereby fixing the ruler 100, positioning the ruler 100, preventing the ruler 100 from shifting or deviating, and thus improving the accuracy of measuring the liquid level height.

[0072] In another possible embodiment, refer to Figure 5 As shown, the surface of the fixing plate 700 is perpendicular to the extension direction from the bottom end to the top end of the ruler 100.

[0073] In this embodiment, since the fixing plate 700 and the ruler 100 are perpendicular to each other, when the ruler 100 is placed into the container 10 to be measured and the bottom end of the ruler 100 is pressed against the bottom wall of the container 10, the user only needs to ensure that the fixing plate 700 is parallel to the horizontal plane to ensure that the ruler 100 is perpendicular to the bottom wall of the container 10 to be measured, preventing the ruler 100 from tilting at too large an angle, thereby further improving the accuracy of measuring the liquid level height.

[0074] In some possible embodiments, refer to Figure 5 As shown, the fastener 710 includes at least one hook for engaging with the container opening edge of the container 10 to be tested.

[0075] The fastener 710 can be an adhesive, a snap-fit, a bolted connector 600, a magnetic connector 600, etc. In this embodiment, the fastener 710 includes at least one hook. The fastener 700 is snapped onto the container opening of the container 10 to be tested via the hook, thereby fixing and positioning the fastener 700, and thus fixing and positioning the ruler 100.

[0076] In other embodiments, refer to Figure 6 As shown, it also includes an indicator plate 800, a sliding member 310 which is a sliding rod, one end of which is connected to the float body 320, the sliding rod passes through an annular groove, and one end of the sliding rod extends out of the annular groove and is connected to the float body 320, and the other end of the sliding rod extends out of the annular groove and is connected to the indicator plate 800.

[0077] In this embodiment, by setting an indicator plate 800, users can quickly read the scale mark 110 corresponding to the float body 320, that is, users can quickly obtain the liquid level height of the liquid to be tested in the container 10.

[0078] In another embodiment, reference Figure 6 As shown, the surface of the indicator plate 800 is perpendicular to the extension direction from the bottom end to the top end of the ruler 100.

[0079] In this embodiment, when the float 320 is located on the surface of the liquid to be measured, the indicator plate 800 will be parallel to the surface of the liquid to be measured because the indicator plate 800 and the ruler 100 are perpendicular to each other. This improves the accuracy of the scale value in the scale mark 110 corresponding to the indicator plate 800, and thus improves the accuracy of measuring the liquid level height.

[0080] In one embodiment, reference is made to... Figure 2 and Figure 3 As shown, the unidirectional barbs in the unidirectional barb group are distributed at equal intervals of 400.

[0081] In this embodiment, the unidirectional barbs 400 in the unidirectional barb group are arranged at equal intervals, so that the sliding member 310 is subjected to uniform force, which improves the stability of the sliding member 310 sliding on the annular groove 200, extends the service life of the sliding member 310, and enhances the unidirectional blocking reliability of the unidirectional groove 230, avoiding the phenomenon of sliding member 310 slippage.

[0082] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0083] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A liquid level gage, characterized by, include: A ruler body (100) is provided with scale markings (110), which are arranged from the bottom end of the ruler body (100) to the top end of the ruler body (100). The ruler body (100) is provided with a first sliding groove (210), a second sliding groove (220), a one-way sliding groove (230) and a third sliding groove (240). The first sliding groove (210), the second sliding groove (220), the one-way sliding groove (230) and the third sliding groove (240) are connected end to end to form an annular sliding groove (200). The extension direction of the first sliding groove (210) and the one-way sliding groove (230) is the same as that from the bottom end of the ruler body (100) to the top end of the ruler body (100). A float assembly (300) includes a slider (310) and a float body (320). The slider (310) is slidably connected to the annular groove (200), and the float body (320) is disposed on the slider (310). The one-way groove (230) is used to allow the slider (310) to pass unidirectionally from the bottom end to the top end of the ruler (100). The float body (320) is configured such that when it is located at the bottom end of the one-way groove (230) and placed into the test container (10), the buoyancy of the test liquid in the test container (10) drives the slider (310) to move from the bottom end to the top end of the ruler (100) on the one-way groove (230), and stops moving when it is located on the surface of the test liquid.

2. The liquid level gage of claim 1, wherein, At least one sidewall of the one-way groove (230) extending in the direction of extension is provided with a group of one-way barbs. The group of one-way barbs includes a plurality of one-way barbs (400). Each of the one-way barbs (400) in the group of one-way barbs is arranged in sequence at intervals along the direction of extension of the one-way groove (230). The one-way barbs (400) are used to allow the sliding member (310) to pass unidirectionally from the bottom end of the one-way groove (230) to the top end of the one-way groove (230).

3. The liquid level gage of claim 1, wherein, It also includes a spacer plate (500) and a connector (600). The annular groove (200) penetrates the ruler body (100) along the thickness direction to form an annular through groove. The spacer plate (500) is disposed in the annular through groove to form the inner ring wall of the annular through groove. The spacer plate (500) is connected to the ruler body (100) through the connector (600).

4. The liquid level checking scale according to claim 3, characterized in that, The connector (600) is a connecting plate, and the connecting plate is provided with a clearance opening (610). The clearance opening (610) is configured to avoid the float assembly (300) when the sliding member (310) slides on the annular groove (200).

5. The dipstick according to any one of claims 1 to 4, characterized in that It also includes a fixing plate (700), which is disposed on the top of the ruler (100). The fixing plate (700) is provided with a fixing member (710), which is used to connect with the container to be tested (10) to fix the ruler (100).

6. The liquid level checking scale according to claim 5, characterized in that, The surface of the fixing plate (700) is perpendicular to the extension direction from the bottom end to the top end of the ruler (100).

7. The liquid level gauge according to claim 5, characterized in that, The fastener (710) includes at least one hook for engaging with the container opening along the wall of the container to be tested (10).

8. The liquid level checking scale according to claim 3, wherein It also includes an indicator plate (800), the sliding member (310) is a sliding rod, one end of the sliding rod is connected to the float body (320), the sliding rod passes through the annular through groove, and one end of the sliding rod extends out of the annular through groove and is connected to the float body (320), and the other end of the sliding rod extends out of the annular through groove and is connected to the indicator plate (800).

9. The liquid level checking scale according to claim 8, characterized in that, The surface of the indicator plate (800) is perpendicular to the extension direction from the bottom end to the top end of the ruler (100).

10. The liquid level checking scale according to claim 2, wherein, The unidirectional barbs (400) in the unidirectional barb group are distributed at equal intervals.

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