An automatic switch structure and testing device for testing electronic backpacks for water meters

Abstract

This application relates to the technical field of water meter production and testing equipment, and discloses an automatic switch structure and testing device for testing water meter electronic backpacks. The automatic switch structure includes: a cover plate, which is flip-mounted on the testing machine body; a pressure trigger, which is rotatably mounted on the testing machine body and has opposing force-applying and triggering ends, with the force-applying end facing the cover plate; a return elastic element, which is connected to the pressure trigger and applies a bidirectional elastic force to keep the pressure trigger horizontal; and a start switch, which is electrically connected to the testing turntable assembly and is positioned above the triggering end. The force-applying end moves downward by pressing down on the cover plate, causing the triggering end to move upward and press the start switch. The testing turntable assembly is activated by the jogging press of the start switch. This solves the problems of low efficiency and inconvenience caused by manually closing the cover of the water meter electronic backpack and pressing the start switch in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of water meter production and testing equipment, and in particular to an automatic switch structure and testing device for testing electronic backpacks for water meters. Background Technology

[0002] A smart water meter is a new type of water meter that uses modern microelectronics, modern sensing technology, and smart IC card technology to measure water consumption and transmit water usage data for settlement transactions. Existing photoelectric water meters include a meter head and an electronic backpack. The meter head contains several digit wheels with numerical codes printed on their surfaces, each wheel representing a digit. The meter's reading can be clearly read through a window on the meter head surface. The electronic backpack includes a housing and a photoelectric module for automatic meter reading. A light-reflecting strip is provided on the surface of the digit wheel, or a light-transmitting window is provided on the digit wheel body. This allows the photoelectric module to collect different coded information at different angular displacements of the digit wheels. By collecting the coded information from the digit wheels, the photoelectric module determines the rotational angular displacement of the digit wheels and then determines the digit that each digit wheel should display, thus achieving remote electronic meter reading.

[0003] Existing electronic water meter backpacks can be assembled onto the meter head. During production, these backpacks need to be tested to ensure the accuracy of the detected rotation count compared to the actual rotation count. This requires powering on an external rotating device and transmitting the detected rotation count to the system for comparison. Currently, the process is entirely manual. A cover with a data transmitter (infrared transmitter) is manually placed over the backpack to connect it to the internal data transmitter (data transmission contact). Then, the start switch is pressed, causing the motor to rotate at a set speed for a certain period. The activated backpack then detects the motor's rotation and transmits this information via a data receiver (infrared receiver) cover, which is manually placed over the backpack and transmitted to the receiver. This manual process of covering the backpack and pressing the start switch is inefficient and inconvenient.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide an automatic switch structure and testing device for testing water meter electronic backpacks, so as to solve the problems of low efficiency and inconvenience caused by the process of manually closing the cover of the water meter electronic backpack and then pressing the start switch in the prior art.

[0006] The technical solution of this application is as follows:

[0007] On one hand, this application proposes an automatic switch structure for testing an electronic backpack for water meters, which is installed on the testing machine body. The testing machine body includes a testing turntable assembly, wherein the automatic switch structure includes:

[0008] A cover plate, which can be flipped and mounted on the main body of the testing machine;

[0009] The pressure trigger is rotatably mounted on the test machine body and has opposing force-applying end and triggering end, with the force-applying end facing the cover plate.

[0010] The return elastic element is connected to the pressure trigger element and applies a bidirectional elastic force to the pressure trigger element to keep the pressure trigger element horizontal.

[0011] The start switch is electrically connected to the test turntable assembly and is located above the trigger end.

[0012] The force-applying end moves downward by pressing down the cover plate, causing the trigger end to move upward and press the start switch. The test turntable assembly is started by jogging the start switch.

[0013] Optionally, a bracket is fixedly installed on the testing machine body, and the pressure trigger is rotatably mounted on the bracket through a hinge position, with the force-applying end and the trigger end located on both sides of the hinge position, respectively.

[0014] The support includes: a base, which is fixedly mounted on the testing machine body;

[0015] The two uprights are fixed to the base and spaced apart. The pressure trigger is hinged to the two uprights.

[0016] Optionally, the pressure trigger includes a pressure plate, the pressure end of which is provided with an arc-shaped surface, the arc-shaped surface being located on the downward movement path of the cover plate;

[0017] During the downward movement of the cover plate, one edge of the cover plate first contacts the curved surface and presses down on the pressure end, and then separates from the edge of the curved surface to allow the pressure end to return to its original position.

[0018] Optionally, the return elastic element includes a bidirectional telescopic spring, one end of which is fixed to the pressure trigger and the other end is fixed to the bracket.

[0019] Optionally, the return spring includes a bidirectional toggle spring connected to the pressure trigger and the column.

[0020] Optionally, the distance between the force-applying end of the pressure-applying trigger and the rotation center of the pressure-applying trigger is a first length, and the distance between the triggering end of the pressure-applying trigger and the rotation center of the pressure-applying trigger is a second length, wherein the first length is less than the second length.

[0021] Optionally, the test machine body is provided with a suspension bracket, which is located on the side of the pressure trigger that is away from the cover plate;

[0022] The start switch is mounted on the suspension bracket, with the button of the start switch facing downwards, and the trigger end of the pressure trigger is located below the start switch.

[0023] On the other hand, a testing device for a water meter electronic backpack includes: a testing machine body, the testing machine body including a testing platform and a testing turntable assembly located below the testing platform;

[0024] The mounting holes for the electronic backpack are located on the test platform.

[0025] Infrared signal transmission module, the infrared signal transmission module is mounted on the cover plate;

[0026] And as described above, the automatic switch structure has a cover plate that can be flipped up and set on the test platform;

[0027] The mounting holes for the electronic backpack are used to embed the electronic backpack of the water meter to be tested, so that the rotating monitoring sensor of the electronic backpack of the water meter is opposite to the turntable of the test turntable assembly;

[0028] The cover plate is placed over the opening of the water meter electronic backpack so that the infrared signal transmission module can be connected to the data transmission module of the water meter electronic backpack to receive the rotation information of the turntable detected by the water meter electronic backpack.

[0029] Optionally, the test turntable assembly also includes: a drive motor, which is connected to a start switch via a circuit;

[0030] The vertical shaft is fixedly mounted on the shaft of the drive motor, and the turntable is mounted on the vertical shaft.

[0031] Optionally, the turntable is adjustable on the vertical shaft via a height adjustment mechanism;

[0032] The bottom of the turntable is provided with a sleeve, which is fitted onto the vertical shaft. The height adjustment component includes a locking screw, which passes through the side wall of the sleeve.

[0033] The beneficial effects of the automatic switch structure and testing device for testing electronic water meter backpacks provided in this application are at least as follows: By flipping a cover plate on the testing machine body, the electronic water meter backpack to be tested is placed on the testing machine body and limited, so that the rotating wheel monitoring sensor of the electronic water meter backpack is opposite to the testing turntable assembly. Therefore, when the testing turntable assembly starts to rotate, the rotating wheel monitoring sensor of the electronic water meter backpack can detect the rotation information. By rotating a pressure trigger member on the testing machine body, and under the bidirectional elastic force of the return elastic member, the pressure trigger member is kept horizontal in the initial state. When the flipped cover plate covers the electronic water meter backpack, the force-applying end of the pressure trigger member moves downward due to the downward pressure of the cover plate, causing the trigger end to move upward and press the start switch. This causes the testing turntable assembly to start by the jogging press of the start switch. After starting, the testing turntable assembly rotates according to a preset speed and time, thus allowing the rotating wheel monitoring sensor of the electronic water meter backpack to detect the rotation information. After the preset time is reached, the test turntable assembly automatically stops. Then, when the operator flips the cover away from the water meter's electronic backpack, the cover moves upward, and the force-applying end of the pressure trigger moves upward along the edge of the cover, causing the trigger end to move downward and away from the start switch. Thus, the start switch is not triggered during the cover opening process. In this way, the cover acts like the lid of the water meter's electronic backpack; flipping the cover replaces the original action of fastening the lid, and the start switch is pressed during the flipping process. This reduces testing steps, thereby reducing the operator's workload and improving testing efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a testing device for an electronic water meter backpack according to an embodiment of this application during use;

[0035] Figure 2 This is a right view of a testing device for an electronic water meter backpack according to an embodiment of this application during use.

[0036] Figure 3 for Figure 2 Enlarged view of point A;

[0037] Figure 4 This is a schematic diagram of the automatic switch structure of a test water meter electronic backpack according to an embodiment of this application;

[0038] Figure 5 This is a schematic diagram illustrating the working principle of an automatic switch structure for a test water meter electronic backpack according to an embodiment of this application, wherein... Figure 5 Figure (a) is a cross-sectional view at the moment before contact during the downward flipping process. Figure 5 Figure (b) is a cross-sectional view at the moment of detachment during the downward flipping process. Figure 5 Figure (c) is a cross-sectional view showing the completion moment of the downward flipping process. Figure 5 Figure (d) is a cross-sectional view at the moment of separation during the upward flipping process;

[0039] Figure 6 This is a schematic diagram of the structure of a water meter electronic backpack testing device in its open state during use, according to an embodiment of this application.

[0040] Figure 7 This is an exploded view of a test device for an electronic water meter backpack according to an embodiment of this application during use.

[0041] The following are the labels in the diagram: 10. Water meter electronic backpack; 100. Test machine body; 110. Test turntable assembly; 111. Drive motor; 112. Vertical shaft; 113. Turntable; 114. Locking screw; 120. Test platform; 121. Electronic backpack mounting hole; 130. Infrared signal transmission module; 200. Automatic switch structure; 210. Cover plate; 220. Pressure trigger; 221. Force end; 222. Trigger end; 223. Hinge; 224. Pressure plate; 225. Curved surface; 230. Return elastic element; 231. Telescopic spring; 240. Start switch; 241. Suspension bracket; 250. Bracket; 251. Base; 252. Column. Detailed Implementation

[0042] This application provides an automatic switch structure and testing device for testing electronic backpacks used for water meters. To make the purpose, technical solution, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0043] It should be noted that in annotations, leader lines with arrows represent non-solid areas such as holes and slots, or non-specific solid features such as higher-level features, or specific directions. Leader lines without arrows represent solid features or specific lower-level features.

[0044] When a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings and are for ease of description only, and should not be construed as limiting the scope of the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0045] Example 1

[0046] like Figure 1 , Figure 2 As shown, this application also proposes an automatic switch structure 200 for testing a water meter electronic backpack, which is installed on the testing machine body 100 to test the water meter electronic backpack 10. The testing machine body 100 includes a testing turntable assembly 110, which is activated and rotated after being powered on, so that the rotating wheel monitoring sensor of the water meter electronic backpack 10 can detect the rotation information. The system of the testing device then compares the detected rotation information with standard rotation information, thereby determining whether the water meter electronic backpack 10 is qualified in measuring the water consumption of the water meter. The automatic switch structure 200 is used to control the opening of the testing turntable assembly 110. For ease of structural description, the direction facing the testing machine body 100 when the operator is using it is considered the front-back direction, the operator is located in front of the testing machine body 100 for operation, the testing machine body 100 is placed horizontally, the direction perpendicular to the front-back direction in the horizontal plane is considered the left-right direction, and the height direction of the testing machine body 100 is considered the up-down direction.

[0047] like Figure 2 , Figure 3As shown, the automatic switch structure 200 of this embodiment mainly includes: a cover plate 210, a pressure trigger 220, a return elastic member 230, and a start switch 240. The cover plate 210 is rotatably mounted on the test machine body 100, with its rear end hinged to the test machine body 100, allowing its front end to rotate up and down around the central axis. The pressure trigger 220 is rotatably mounted on the front end of the test machine body 100 and has a force-applying end 221 and a trigger end 222 facing each other in the front-rear direction. The force-applying end 221 is located at the front end and faces the cover plate 210. The return elastic member 230 is connected to the pressure trigger 220 and applies a bidirectional elastic force to the pressure trigger 220 so that the pressure trigger 220 remains horizontal in its initial position. Thus, when the force-applying end 221 can be pressed down or lifted, and when the force-applying end 221 is released, the return elastic member 230 returns the pressure trigger 220 to its horizontal position. The start switch 240 is electrically connected to the test turntable assembly 110. The start switch 240 is positioned above the trigger end 222. When the trigger end 222 is pressed and rotated at an angle, it can be raised or lowered to press or disengage from the start switch 240. Therefore, as the cover plate 210 covers the water meter electronic backpack 10 downwards, the force-applying end 221 moves downwards due to the downward pressure of the cover plate 210, causing the trigger end 222 to move upwards and press the start switch 240. The test turntable assembly 110 is then activated by the intermittent pressing of the start switch 240. The cover plate 210 flips downwards to cover the water meter electronic backpack 10, functioning similarly to a lid covering the water meter electronic backpack 10 during testing. Furthermore, the start switch 240 is automatically triggered during the flipping process to initiate the test.

[0048] like Figure 2 , Figure 3As shown, the automatic switch structure 200 of the test water meter electronic backpack in this embodiment uses a flip-up cover 210 on the test machine body 100 to limit the water meter electronic backpack 10 placed on the test machine body 100, so that the rotating wheel monitoring sensor of the water meter electronic backpack 10 is opposite to the test turntable assembly 110. Therefore, when the test turntable assembly 110 starts to rotate, the rotating wheel monitoring sensor of the water meter electronic backpack 10 can detect the rotation information. A pressure trigger 220 is rotatably mounted on the test machine body 100, and under the bidirectional elastic force of the return elastic member 230, the pressure trigger 220 remains horizontal in its initial state. When the flipped cover 210 covers the water meter electronic backpack 10 below, the force-applying end 221 of the pressure trigger 220 moves downward due to the downward pressure of the cover 210, causing the trigger end 222 to move upward and press the start switch 240. This causes the test turntable assembly 110 to start by the jogging press of the start switch 240. After starting, the test turntable assembly 110 rotates according to a preset speed and time, allowing the rotating wheel monitoring sensor of the water meter electronic backpack 10 to detect the rotation information. After the preset time is reached, the test turntable assembly 110 automatically stops. Then, when the operator flips the cover 210 away from the water meter electronic backpack 10 below, the cover 210 moves upward, and the force-applying end 221 of the pressure trigger 220 moves upward due to the upward movement of the edge of the cover 210, causing the trigger end 222 to move downward and away from the start switch 240. Thus, the start switch 240 is not triggered during the opening of the cover 210. In this way, the cover plate 210 is equivalent to the cover of the water meter electronic backpack 10. By flipping the cover plate 210, the original action of closing the cover can be replaced. In addition, the start switch 240 can be pressed during the flipping of the cover plate 210, reducing the testing steps, thereby reducing the labor intensity of the operator and improving the testing efficiency.

[0049] like Figure 2 , Figure 3 As shown, the upper surface of the testing machine body 100 in this embodiment is a testing platform 120. A cover plate 210 is hinged to the testing platform 120, and the water meter electronic backpack 10 can be embedded in the testing platform 120 for testing. The testing turntable assembly 110 is located below the testing platform 120. A bracket 250 is fixedly installed on the front surface of the testing platform 120. The bracket 250 is vertically arranged, and a pressure trigger 220 is rotatably mounted on the bracket 250 via a hinge point 223. The hinge point 223 can be a hinge rod or other rotatable structure. The force-applying end 221 and the trigger end 222 are located on the front and rear sides of the hinge point 223, respectively. Therefore, when the force-applying end 221 is pressed down, the trigger end 222 can be lifted upwards. Figure 4As shown, the bracket 250 specifically includes a base 251 and left and right side columns 252. The base 251 can be fixedly mounted on the testing machine body 100 with screws, and the position of the base 251 is adjustable. For example, a waist-shaped hole is opened on the base 251 along the front-back direction, so that the position of the base 251 can be adjusted during installation. This allows adjustment of the distance between the entire bracket 250 and the front end of the cover plate 210, thereby adjusting the distance between the force-applying end 221 and the front end of the cover plate 210. The side columns 252 are fixed on the base 251 and spaced apart. The pressure-applying trigger 220 is hinged to the side columns 252. The bracket 250 provides stable support for the pressure-applying trigger 220, and the position of the pressure-applying trigger 220 on the testing machine body 100 can be adjusted.

[0050] like Figure 3 , Figure 5 As shown, the pressure trigger 220 in this embodiment can be a pressure plate 224, which extends a predetermined length in the front-back direction. The pressure end of the pressure plate 224 is provided with an arc-shaped surface 225, which is located on the downward movement path of the cover plate 210. During the downward movement of the cover plate 210, one edge of the cover plate 210 first contacts the arc-shaped surface 225 and presses down on the pressure end, then disengages from the edge of the arc-shaped surface 225, allowing the pressure end to return to its original position. Therefore, by using the arc-shaped surface 225 to engage with the front edge of the cover plate 210, it is convenient for the pressure end to smoothly disengage from the front end of the cover plate 210 after being pressed downwards and moved a certain distance by the cover plate 210. The process of the cover plate 210 contacting and separating from the arc surface 225 during the flipping process is smoother. In addition, the front end of the cover plate 210 can be rounded, which makes it easier for the cover plate 210 to contact and then separate from the arc surface 225 of the pressure end during the pressing or lifting process.

[0051] The return elastic element 230 in this embodiment can adopt various structural forms, such as Figure 3 , Figure 4 As shown, one structure includes a bidirectional telescopic spring 231, one end of which is fixed to the pressure trigger 220 and the other end is fixed to the bracket 250. In another structure, the return elastic member 230 includes a bidirectional toggle spring, which is connected to the pressure trigger 220 and the column 252 (not shown in the figure).

[0052] like Figure 2 , Figure 4 , Figure 5As shown, in this embodiment, the distance between the force-applying end 221 of the pressure-applying trigger 220 and the rotation center of the pressure-applying trigger 220 is a first length L1, and the distance between the trigger end 222 of the pressure-applying trigger 220 and the rotation center of the pressure-applying trigger 220 is a second length L2. The first length L1 is less than the second length L2. Because the front end of the pressure trigger 220 is long and the rear end is short, due to the lever effect, the cover plate 210 needs to be lifted from below the force application end 221. For example, under the elastic force of the return elastic member 230, the force application end 221 can also lock the cover plate 210. When the front end of the cover plate 210 is pressed down below the force application end 221, the force application end 221 presses down on the cover plate 210 and applies a certain pressure to the cover plate 210. This pressure is amplified under the lever effect of the pressure trigger 220, making the cover plate 210 more stably cover the water meter electronic backpack 10, and it is not easy for the water meter electronic backpack 10 to squeeze and easily push up the force application end 221. This can prevent the water meter electronic backpack 10 from easily pushing up the cover plate 210 during the test, thus ensuring the stability of the test. After the test, the staff can lift the cover 210 and apply a pulling force slightly greater than the squeezing force of the water meter electronic backpack 10 to flip the cover 210. The magnitude of the pulling force applied by the staff can be adjusted by adjusting the fixed position of the telescopic spring 231. For example, both the upper and lower ends of the telescopic spring 231 are connected to adjustable sliders, which are slidably set on the pressure trigger 220 and the base 251, respectively. By adjusting the position of the adjustable sliders back and forth and locking them, the position of the telescopic spring 231 from the hinge position 223 can be adjusted.

[0053] like Figure 2 , Figure 6 As shown, the testing machine body 100 of this embodiment is provided with a suspension bracket 241, which is located on the side of the pressure trigger 220 away from the cover plate 210. The start switch 240 is provided on the suspension bracket 241, and the button of the start switch 240 faces downward. The trigger end 222 of the pressure trigger 220 is located below the start switch 240. In the specific structure, the suspension bracket 241 is located in front of the bracket 250. When the operator performs the test, they are positioned in front of the suspension bracket 241, which can block the start switch 240 and protect it.

[0054] The specific usage process of the automatic switch structure 200 in this embodiment is as follows: (e.g.) Figure 4 , Figure 5 As shown in Figure (a), the front end of the cover plate 210 is pressed down, and the front end of the cover plate 210 begins to move downward and contact the force-applying end 221 of the pressure trigger 220, as shown in Figure (a). Figure 5As shown in Figure (b), the front end of the cover plate 210 begins to push the force-applying end 221 downwards, causing the pressure-applying trigger 220 to begin rotating. The force-applying end 221 moves downwards while the trigger end 222 on the other end moves upwards. During this process, the upward-moving trigger end 222 presses the button of the start switch 240 upwards, thus activating the start switch 240. The front end of the cover plate 210 continues to press downwards. Before the trigger end 222 is fully depressed, the force-applying end 221 moves downwards and forwards due to the rotation of the pressure-applying trigger 220. The front end of the cover plate 210 moves downwards past the limit position of the force-applying end 221, causing the force-applying end 221 to disengage from the cover plate 210. Figure 5 As shown in Figure (c), under the action of the return elastic element 230, the trigger end 222 moves downward and returns to its original position due to the lack of applied force, immediately disengaging from the button of the start switch 240, thus achieving a jog of the start switch 240. Figure 5 As shown in Figure (d), after the test is completed, the staff pulls the cover plate 210 upward, and the cover plate 210 flips backward and upward. During the upward movement, the front edge of the cover plate 210 pushes the force-applying end 221 upward and forward to rotate. The trigger end 222 at the other end moves downward and backward, thus moving away from the start switch 240 and avoiding triggering the start switch 240. As the force-applying end 221 moves upward and forward under the rotation of the pressure trigger 220, the continued upward movement of the cover plate 210 will cause the force-applying end 221 to detach from the front edge of the cover plate 210, and the cover plate 210 continues to flip upward to complete the process.

[0055] Example 2

[0056] like Figure 1 , Figure 6 , Figure 7As shown, this embodiment proposes a testing device for a water meter electronic backpack, including: a testing machine body 100, an electronic backpack mounting hole 121, an infrared signal transmission module 130, and an automatic switch structure 200 as described above. The testing machine body 100 includes a testing platform 120 and a testing turntable assembly 110 located below the testing platform 120. Specifically, the testing machine body 100 can be a box structure, and the testing platform 120 is the upper surface of the box structure. The electronic backpack mounting hole 121 is formed on the testing platform 120 and extends into the interior of the testing machine body 100. The infrared signal transmission module 130 is disposed on the cover plate 210, specifically on the inner surface, so that the infrared signal transmission module 130 can be matched with the water meter electronic backpack 10 by flipping the cover plate 210. The cover 210 of the automatic switch structure 200 is flip-mounted on the test platform 120. The electronic backpack mounting hole 121 is used to engage the water meter electronic backpack 10 to be tested, so that the rotating wheel monitoring sensor of the water meter electronic backpack 10 is aligned with the rotating disk 113 of the test rotating disk assembly 110. The cover 210 covers the opening of the water meter electronic backpack 10, allowing the infrared signal transmission module 130 to connect with the data transmission module (e.g., data transmission contacts) of the water meter electronic backpack 10 to receive the rotation information of the rotating disk 113 detected by the water meter electronic backpack 10. Therefore, the existing cover of the water meter electronic backpack 10 with the infrared signal transmission module 130 is improved to a cover 210 with the infrared signal transmission module 130, which can be easily closed by flipping the cover 210, facilitating operation.

[0057] like Figure 2 , Figure 7 As shown, the test turntable assembly 110 in this embodiment further includes a drive motor 111 and a vertical shaft 112. The drive motor 111 is connected to a start switch 240 via a circuit. The vertical shaft 112 is fixedly mounted on the rotating shaft of the drive motor 111, and the turntable 113 is mounted on the vertical shaft 112. In the specific structure, the drive motor 111 and the vertical shaft 112 are located inside the test machine body 100. When the start switch 240 is triggered, it sends a start signal to the system of the test device, thereby controlling the drive motor 111 to rotate at a predetermined speed and for a predetermined time. The system pre-stores the number of rotations of the turntable 113 within the predetermined time. When the system receives the number of rotations detected by the water meter electronic backpack 10, it compares the results to determine the quality of the water meter electronic backpack 10.

[0058] like Figure 2 , Figure 7As shown, in this embodiment, the turntable 113 is adjustablely mounted on the vertical shaft 112 via a height adjustment component. A sleeve is provided at the bottom of the turntable, and the sleeve is fitted onto the vertical shaft. The height adjustment component includes a locking screw 114, which passes through the side wall of the sleeve. The height of the turntable 113 can be adjusted via the height adjustment component, thereby facilitating the debugging of the entire device and ensuring the stability of the test.

[0059] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An automatic on-off structure for testing an electronic back-pack of a water meter, for being disposed on a test machine body, the test machine body comprising a test turntable assembly, characterized in that, The automatic switch structure comprises: a cover plate, which is reversibly arranged on the testing machine body; a pressure trigger, which is rotatably arranged on the testing machine body and has opposite force applying end and trigger end, the force applying end is arranged towards the cover plate; a return elastic member, which is connected to the pressure trigger and applies bidirectional elastic force to the pressure trigger to keep the pressure trigger horizontal; a starting switch, which is electrically connected to the testing turntable assembly, the starting switch is arranged above the trigger end; the force applying end is moved downward by the pressing of the cover plate, so that the trigger end is moved upward to press the starting switch, and the testing turntable assembly is started by the touch press of the starting switch; the distance between the force applying end of the pressure trigger and the rotation center of the pressure trigger is a first length, the distance between the trigger end of the pressure trigger and the rotation center of the pressure trigger is a second length, the first length is less than the second length, when the front end of the cover plate is pressed below the force applying end, the force applying end presses the cover plate and applies a certain pressure to the cover plate, the pressure is amplified under the leverage of the pressure trigger, so that the cover plate is more stably covered on the electronic back pack of the water meter, thereby avoiding the electronic back pack of the water meter easily pushing the cover plate during testing.

2. The automatic on-off structure of a test water meter electronic back-pack according to claim 1, characterized in that, a bracket is fixedly arranged on the testing machine body, the pressure trigger is rotatably arranged on the bracket through a hinged position, and the force applying end and the trigger end are respectively located on two sides of the hinged position; the bracket comprises a base, which is fixedly installed on the testing machine body; two side columns, which are fixed on the base and are arranged in a spaced manner, and the pressure trigger is hinged on the two side columns.

3. The automatic on-off structure of a test water meter electronic back-pack according to claim 2, characterized in that, the pressure trigger comprises a pressure plate, the pressure end of the pressure plate is provided with an arc surface, and the arc surface is located on the downward moving path of the cover plate; during the downward movement of the cover plate, one end edge of the cover plate first contacts the arc surface to press the pressure end, and then separates from the edge of the arc surface to reset the pressure end.

4. The automatic on-off structure of a test water meter electronic back-pack according to claim 2, wherein, the return elastic member comprises a bidirectional extension spring, one end of the extension spring is fixed on the pressure trigger, and the other end is fixed on the bracket.

5. The automatic on-off structure of a test water meter electronic back-pack according to claim 2, wherein, the return elastic member comprises a bidirectional button spring, which is connected to the pressure trigger and the column.

6. The automatic on-off structure of a test water meter electronic back-pack according to claim 1, wherein, a suspension bracket is arranged on the testing machine body, and the suspension bracket is located on the side of the pressure trigger away from the cover plate; the starting switch is arranged on the suspension bracket, and the button of the starting switch faces downward, and the trigger end of the pressure trigger is located below the starting switch.

7. A testing device for an electronic back-pack of a water meter, characterized in that, comprises: a testing machine body, which comprises a testing platform and a testing turntable assembly located below the testing platform; the automatic switch structure of any one of claims 1-6, the cover plate of the automatic switch structure is reversibly arranged on the testing platform; an electronic back pack mounting hole, which is formed on the testing platform; An infrared signal transmission module is arranged on the cover plate; The electronic backpack mounting hole is used for clamping the electronic backpack of the water meter to be tested, so that the rotating wheel monitoring sensor of the electronic backpack of the water meter is opposite to the rotating disc of the test rotating disc assembly; The cover plate is covered on the box opening of the electronic backpack of the water meter, so that the infrared signal transmission module is opposite to the data transmission module of the electronic backpack of the water meter to receive the rotating information of the rotating disc detected by the electronic backpack of the water meter.

8. The test apparatus for a water meter electronic backpack of claim 7, wherein, The test rotating disc assembly further comprises a driving motor connected to the starting switch through an electric circuit; A vertical shaft is fixedly arranged on the rotating shaft of the driving motor, and the rotating disc is arranged on the vertical shaft.

9. The test apparatus for a water meter electronic backpack of claim 8, wherein, The rotating disc is adjustably arranged on the vertical shaft through a height adjusting member; The bottom of the rotating disc is provided with a sleeve, the sleeve is sleeved on the vertical shaft, and the height adjusting member comprises a locking screw member penetrating through the side wall of the sleeve.

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