Anti-cheating entry structure and method of electronic scale calibration mode
By designing a locking column and anti-dismantling device on the electronic scale, combined with the structure of the inner and outer joints, the problem of merchants illegally entering the calibration mode is solved, preventing cheating while facilitating calibration for manufacturers.
Patent Information
- Application Number
- CN202511032646.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-09-12
AI Technical Summary
In the prior art, merchants can easily open the electronic scale housing and enter the calibration mode through the short-circuit interface on the circuit board to change the weighing display reading, but there is a lack of effective protective measures.
An anti-cheating entry structure for the electronic scale calibration mode is designed, including a locking column, an anti-dismantling device, an inner butt joint, and an outer butt joint. The locking column and the anti-dismantling device cooperate to prevent merchants from directly opening the shell; the design of the inner butt joint and the outer butt joint makes it difficult for merchants to access the short-circuit interface, while providing manufacturers with a convenient way to enter the calibration mode.
It effectively prevents merchants from modifying weighing data through illegal means, ensures weighing accuracy, and facilitates manufacturers to carry out maintenance and calibration, thereby improving the security and convenience of anti-cheating.
Smart Images
Figure CN120628259A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an electronic scale, and in particular to an anti-cheating entry structure and method for an electronic scale calibration mode. Background Art
[0002] An electronic scale is a measuring tool that uses electronics and sensors to measure weight. It's frequently used in the buying and selling of agricultural products and other goods by weight. To ensure accurate readings, electronic scales undergo factory calibration. Weight calibration generally occurs in two ways: by entering calibration mode via the setup button on the display, or by using a short-circuit connector on the circuit board.
[0003] To gain additional profits, some unscrupulous merchants sometimes cheat by illegally calibrating or modifying electronic scales. This involves modifying the weighing data after entering calibration mode, causing the actual weight of an item to differ from the displayed weight, thereby profiting. To address this, some manufacturers have banned merchants from entering calibration mode via a button, preventing them from doing so. However, there are currently no effective safeguards against merchants opening the scale casing and entering calibration mode via a short-circuit interface on the circuit board, and this is therefore a workaround. Summary of the Invention
[0004] The present invention addresses the defects in the prior art that merchants can easily open the electronic scale housing and enter the calibration mode through the short-circuit interface on the circuit board to change the weighing display reading, and provides a new anti-cheating entry structure and method for the electronic scale calibration mode.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: An anti-cheating entry structure for an electronic scale calibration mode comprises an upper shell of an electronic scale, a lower shell of an electronic scale, and a circuit board, wherein the upper shell of the electronic scale and the lower shell of the electronic scale have an inner side surface and an outer side surface, the circuit board is arranged on the inner side surface of the lower shell of the electronic scale, a short-circuit interface is provided on the circuit board, a locking column is provided on the inner side surface of the upper shell of the electronic scale extending toward the lower shell of the electronic scale, the outer end portion of the locking column penetrates outward from the inner side surface of the lower shell of the electronic scale and reaches the outer side surface of the lower shell of the electronic scale, a locking hole is provided on the locking column where it exceeds the outer side surface of the lower shell of the electronic scale, an anti-disassembly device is provided at the locking hole to prevent the upper shell and the lower shell of the electronic scale from being opened, and a short-circuit interface is provided on the lower shell of the electronic scale. The short-circuit docking device includes an inner docking joint and an outer docking joint that are connected to each other, the inner docking joint faces the upper shell of the electronic scale, and the outer docking joint faces the lower shell of the electronic scale, and the short-circuit interface is connected to the inner docking joint through a line; a detachable docking joint cover is provided on the outer surface of the lower shell of the electronic scale, and the docking joint cover covers the outer docking joint; the lower shell of the electronic scale is also recessed inwardly at the outer docking joint to provide an inwardly recessed connecting seat, and an outer docking joint connection channel is provided in the inwardly recessed connecting seat, the upper part of the outer docking joint connection channel is covered by the docking joint cover, and the lower part of the outer docking joint connection channel is connected to the short-circuit docking device.
[0006] Among them, the locking column of the upper shell of the electronic scale passes through the outer side of the lower shell of the electronic scale to structurally connect the upper shell and the lower shell of the electronic scale. The locking hole on the locking column cooperates with the anti-dismantling device to lock the upper shell and the lower shell of the electronic scale. It cannot be disassembled without violent destruction, thereby preventing merchants from opening the electronic scale shell at will.
[0007] In contrast, in order to facilitate the manufacturer to calibrate the electronic scale, this solution leads the short-circuit interface on the circuit board to the inner docking connector, and then to the outer docking connector. When the manufacturer needs to enter the calibration mode, there is no need to destroy the anti-dismantling device to open the electronic scale shell, which is convenient for the manufacturer to repair. At the same time, this solution also takes into account the situation where merchants use the outer docking connector to enter the calibration mode. Therefore, this solution also sets a recessed connection seat at the outer docking connector and sets an outer docking connector connection channel in the recessed connection seat, so that the outer docking connector is recessed into the lower shell of the electronic scale, thereby increasing the difficulty for merchants to access the outer docking connector. Without the various professional tools that manufacturers generally have, merchants also find it difficult to enter the outer docking connector connection channel of the recessed connection seat to short-circuit the outer docking connector, thereby achieving an anti-cheating entry structure that prevents merchants from cheating but facilitates manufacturers to enter the calibration mode for repairs. In addition, this solution also sets a docking connector cover on the outer docking connector connection channel to block the outer docking connector connection channel, so that it can better meet the daily use needs of the electronic scale.
[0008] Preferably, the anti-cheating entry structure of the electronic scale calibration mode described above, the anti-dismantling device includes an anti-dismantling fastener and a locking rope, the anti-dismantling fastener is provided with a fastener through hole, the locking rope passes through the locking hole and the fastener through hole to connect the outer end of the locking column and the anti-dismantling fastener, and the fastener through hole is provided with a lead seal.
[0009] Preferably, in the above-mentioned anti-cheating entry structure of the electronic scale calibration mode, the outer docking joint connecting the channel includes an upper channel part, a middle channel part, and a lower channel part, and the upper channel part, the middle channel part, and the lower channel part are arranged from top to bottom and their widths increase successively, and the width of the outer docking joint is greater than the width of the upper channel part.
[0010] Preferably, in the anti-cheating entry structure of the electronic scale calibration mode described above, the width of the upper portion of the channel is greater than 3 mm and less than 4 mm, and the width of the outer docking joint is greater than 4 mm and less than 6 mm.
[0011] Preferably, the anti-cheating entry structure of the electronic scale calibration mode described above also includes a short-circuit calibration workpiece, which includes two symmetrically arranged rotating parts, which are hinged to each other and form a hinged part. The rotating part forms a hand-held part above the hinged part, and the rotating part forms a touch part below the hinged part. The short-circuit calibration workpiece cooperates with the outer docking joint connection channel to form an insertion position and a touch position. In the insertion position, the two touch parts are close to each other and the total width of the two touch parts is smaller than the width of the upper part of the channel. In the touch position, the two touch parts are separated from each other and each touches the two pin needles of the outer docking joint.
[0012] Preferably, in the anti-cheating entry structure of the electronic scale calibration mode described above, the lower part of the touch part is also provided with an extension part extending outward, and the two pin needles of the outer docking joint form an angle A, and the angle of the angle A is 20°~40°. The opening of the angle A faces the upper part of the channel. In the touch position, the two touch parts are separated from each other and the extension parts on the touch part each touch the two pin needles of the outer docking joint.
[0013] Preferably, in the above-mentioned anti-cheating entry structure of the electronic scale calibration mode, the short-circuit docking device also includes an outer connecting seat body and an inner connecting seat body arranged upper and lower, the outer docking joint is arranged in the outer connecting seat body, the inner docking joint is arranged in the inner connecting seat body, the upper part of the outer connecting seat body is connected to the lower part of the channel, and a snap-on hook is provided on the indented connecting seat, and the snap-on hook hooks the lower part of one side of the outer connecting seat body.
[0014] Preferably, in the above-mentioned anti-cheating entry structure of the electronic scale calibration mode, the circuit board is also provided with a docking seat at the short-circuit interface, the docking seat is provided with a docking cavity, the short-circuit interface is located in the docking cavity, and also includes a short-circuit socket, the short-circuit socket is provided with a short-circuit plug adapted to the short-circuit interface, the short-circuit plug is inserted into the docking cavity and connected to the short-circuit interface, the short-circuit socket is also provided with a barb downwardly, and the docking seat is matched with a groove, and the short-circuit socket is engaged with the docking seat through the barb and the groove.
[0015] Preferably, the anti-cheating entry structure for the electronic scale calibration mode described above further includes a locking screw, which locks the docking head cover and the outer side surface of the lower shell of the electronic scale.
[0016] A method for preventing cheating entry into an electronic scale calibration mode, using the aforementioned anti-cheating entry structure for the electronic scale calibration mode, further comprising the following steps: S1. Remove the docking connector cover from the outer surface of the lower shell of the electronic scale to expose the outer docking connector connection channel; S2. Take the short-circuit calibration workpiece, place it in the insertion position, and then move the contact portion of the short-circuit calibration workpiece downward until it reaches the bottom of the lower part of the channel; S3, driving the handheld portion of the short-circuit calibration workpiece to rotate outward with the hinge portion as the center, thereby driving the two contact portions of the short-circuit calibration workpiece or the extension portions on the contact portions to respectively contact the two pins of the outer docking connector, thereby forming a contact position; S4. When the touch position is formed, if the current voltage V at the short-circuit interface obtained by the circuit board is less than or equal to the preset short-circuit voltage threshold, it is determined to be a short-circuit state; S5. Keep the short-circuit calibration workpiece at the touch position until the time T entering the short-circuit state is greater than or equal to the preset minimum short-circuit time threshold and less than or equal to the preset maximum short-circuit time threshold, and then move the short-circuit calibration workpiece away from the touch position. At this time, the calibration mode is performed.
[0017] This solution has the following beneficial effects: 1. This solution prevents merchants from directly opening the electronic scale casing and accessing the short-circuit interface on the circuit board through the interaction of the anti-tamper device and the locking hole. If the anti-tamper device is damaged, it means that the merchant is very likely to have cheated, which helps to quickly identify cheating merchants.
[0018] 2. This solution uses an inward-recessed connector, an outward-facing connector connection channel, and a short-circuit connector device to bring the short-circuit interface on the circuit board to the lower shell of the electronic scale, making it easier for manufacturers to enter the calibration mode for repair and debugging. At the same time, merchants cannot effectively access the outward-facing connector without the same professional tools as the manufacturer, which effectively prevents merchants from cheating through the outward-facing connector.
[0019] 3. The coordination between the structural settings of the upper, middle and lower parts of the channel, the structural settings of the outer butt joints and the structural settings of the short-circuit calibration workpiece further increases the difficulty for merchants to access the outer butt joints, and can achieve better anti-cheating effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the local structure of the outer side of the lower shell of the electronic scale in the present invention. Figure 1 ; Figure 3 It is a partial cross-sectional view of the present invention; Figure 4 This is a structural diagram of the lower shell of the electronic scale in the present invention; Figure 5 This is a schematic diagram of the local structure of the outer side of the lower shell of the electronic scale in the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the partial structure of the inner side of the lower shell of the electronic scale in the present invention. Figure 1 ; Figure 7 It is a structural schematic diagram of the recessed connecting seat and the short-circuit docking device in the present invention; Figure 8 This is a schematic diagram of the structure of the present invention when the short-circuit calibration workpiece is in the insertion position; Figure 9 This is a schematic diagram of the structure of the present invention when the short-circuit calibration workpiece is in the contact position; Figure 10 This is a schematic diagram of the structure of the inward-facing connecting seat hooking the outer connecting seat body in the present invention; Figure 11 This is a schematic diagram of the exploded structure of the circuit board and the short-circuit socket in the present invention; Figure 12 It is a structural diagram of the circuit board and the short-circuit socket in the present invention.
[0021] Description of Reference Numerals 100, electronic scale lower shell; 110, docking joint cover; 120, recessed connection seat; 121, snap hook; 130, outer docking joint connection channel; 131, upper channel; 132, middle channel; 133, lower channel; 140, locking screw; 200, short-circuit docking device; 210, inner docking joint; 220, outer docking joint; 230, outer connection seat; 240, inner connection seat; 300, circuit board; 310, short-circuit interface; 320, docking Seat; 321, docking cavity; 330, groove; 400, anti-dismantling device; 430, anti-dismantling fastener; 431, fastener through hole; 432, lead sealing part; 440, locking rope; 500, short-circuit calibration workpiece; 510, rotating part; 520, hinged part; 530, hand-held part; 540, touch part; 550, extension part; 600, short-circuit socket; 610, short-circuit plug; 620, barb; 700, upper shell of electronic scale; 710, locking column; 720, locking hole. DETAILED DESCRIPTION
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention: An anti-cheating entry structure for an electronic scale calibration mode includes an electronic scale upper shell 700, an electronic scale lower shell 100, and a circuit board 300. The electronic scale upper shell 700 and the electronic scale lower shell 100 have inner and outer sides. The circuit board 300 is arranged on the inner side of the electronic scale lower shell 100. A short-circuit interface 310 is provided on the circuit board 300. A locking column 710 is provided on the inner side of the electronic scale upper shell 700 extending toward the electronic scale lower shell 100. The outer end of the locking column 710 penetrates outward from the inner side of the electronic scale lower shell 100 and reaches the outer side of the electronic scale lower shell 100. The locking column 710 is provided with a locking hole 720 at a position beyond the outer side of the electronic scale lower shell 100. The locking hole 720 is provided with an anti-disassembly device 400 for preventing the electronic scale upper shell 700 and the electronic scale lower shell 100 from being opened. The electronic scale lower shell 100 is provided with a short-circuit The short-circuit docking device 200 includes an inner docking joint 210 and an outer docking joint 220 that are connected to each other, the inner docking joint 210 faces the upper shell 700 of the electronic scale, and the outer docking joint 220 faces the lower shell 100 of the electronic scale, and the short-circuit interface 310 is connected to the inner docking joint 210 through a line; a detachable docking joint cover 110 is provided on the outer surface of the lower shell 100 of the electronic scale, and the docking joint cover 110 covers the outer docking joint 220; the lower shell 100 of the electronic scale is also recessed inwardly at the outer docking joint 220 to provide an inwardly recessed connecting seat 120, and an outer docking joint connecting channel 130 is provided in the inwardly recessed connecting seat 120, and the upper part of the outer docking joint connecting channel 130 is covered by the docking joint cover 110, and the lower part of the outer docking joint connecting channel 130 is connected to the short-circuit docking device 200.
[0023] When a merchant wants to cheat, there are two ways. One is to violently destroy the anti-tampering device 400, thereby opening the electronic scale upper shell 700 and the electronic scale lower shell 100. This allows them to cheat by short-circuiting the short-circuit interface 310 on the circuit board 300 and entering calibration mode. However, this method will inevitably destroy the anti-tampering device 400, leaving obvious signs of damage on the electronic scale, making it easy to detect and thus discouraging many merchants from cheating. The other method requires opening the docking connector cover 110 and entering the outer docking connector connection channel 130 of the recessed connector 120 to dock the outer docking connector 220. However, this operation is more difficult for merchants who do not have the professional tools that manufacturers typically have, thus also discouraging many merchants from cheating. For manufacturers, this solution allows them to enter calibration mode and process the electronic scale through the outer docking connector 220 without opening the electronic scale upper shell 700 and the electronic scale lower shell 100, thus achieving the purpose of preventing cheating and facilitating manufacturer maintenance and calibration.
[0024] like Figure 2As shown, preferably, the anti-disassembly device 400 includes an anti-disassembly fastener 430 and a locking rope 440. The anti-disassembly fastener 430 is provided with a fastener through hole 431. The locking rope 440 passes through the locking hole 720 and the fastener through hole 431 to connect the outer end of the locking column 710 and the anti-disassembly fastener 430. A lead seal part 432 is provided at the fastener through hole 431.
[0025] The interconnectedness of the locking cords 440 and the seal 432 effectively deter merchants from tampering. If a merchant cuts the locking cord 440, a portion of the locking cord 440 remains trapped by the seal 432, making it impossible to replace the locking cord 440. This makes it easier to detect signs of tampering by the merchant. Similarly, if a merchant breaks the seal 432, it is difficult to restore it later, thus discouraging merchants from attempting to commit illegal acts.
[0026] like Figure 7 、 8 As shown in Figure 9, preferably, the outer butt joint connecting channel 130 includes an upper channel portion 131, a middle channel portion 132, and a lower channel portion 133. The upper channel portion 131, the middle channel portion 132, and the lower channel portion 133 are arranged from top to bottom and their widths increase successively. The width of the outer butt joint 220 is greater than the width of the upper channel portion 131.
[0027] Preferably, the width of the upper channel portion 131 is greater than 3 mm and less than 4 mm, and the width of the outer butt joint 220 is greater than 4 mm and less than 6 mm.
[0028] The upper channel part 131, the middle channel part 132, the lower channel part 133, and the upper channel part 131 with a width greater than 3 mm and less than 4 mm, which increase in width from top to bottom, make the entrance of the outer docking joint connection channel 130 narrow, thereby isolating most daily necessities from entering.
[0029] The gradually enlarged channel middle portion 132 and channel lower portion 133 relative to the channel upper portion 131 facilitate the setting of the outer docking joint 220. Since the outer docking joint 220, the inner docking joint 210, and the short-circuit interface 310 are each formed by two pin needles, a short circuit state can be formed by connecting the two pin needles. Therefore, this solution sets the distance between the two pin needles to be greater than 4 mm and less than 6 mm. On the one hand, it will not occupy too much internal space inside the lower shell 100 of the electronic scale. On the other hand, because the distance between the two pin needles is greater than the width of the channel upper portion 131, even if the merchant uses a long tool such as a steel wire to enter the channel upper portion 131, it is impossible to touch the two pin needles at the same time and cause a short circuit.
[0030] The shape of the upper channel portion 131 can be circular, square, or any other shape, as long as the maximum width of the upper channel portion 131 is less than 4 mm and the narrowest width is greater than 3 mm. The width of the upper channel portion 131 can be, for example, 3.1 mm, 3.5 mm, or 3.9 mm, and the distance between two pins can be, for example, 4.1 mm, 5 mm, or 5.9 mm. During configuration, ensure that the distance between the two pins is greater than the maximum width of the upper channel portion 131.
[0031] like Figure 8 、 9 As shown, as an option, a short-circuit calibration workpiece 500 is also included, and the short-circuit calibration workpiece 500 includes two symmetrically arranged rotating parts 510, the two rotating parts 510 are hinged to form a hinge part 520, the rotating part 510 forms a hand-held part 530 above the hinge part 520, and the rotating part 510 forms a touch part 540 below the hinge part 520. The short-circuit calibration workpiece 500 cooperates with the outer docking joint connection channel 130 to form an insertion position and a touch position. In the insertion position, the two touch parts 540 are close to each other and the total width of the two touch parts 540 is smaller than the width of the upper part 131 of the channel. In the touch position, the two touch parts 540 are separated from each other and each touches the two pin needles of the outer docking joint 220.
[0032] like Figure 7 、 8 As shown in Figures 9 and 9, preferably, an extension portion 550 is further extended outward from the lower portion of the touching portion 540, and the two pin needles of the outer docking joint 220 form an angle A, and the angle of the angle A is 20°~40°. The opening of the angle A faces the upper portion 131 of the channel. In the touching position, the two touching portions 540 are separated from each other and the extension portions 550 on the touching portion 540 respectively touch the two pin needles of the outer docking joint 220.
[0033] This structural setting of the short-circuit calibration workpiece 500 can allow the two rotating parts 510 to rotate around the hinge part 520, so that the two rotating parts 510 can move closer to or apart from each other. When the manufacturer needs to recalibrate, the two rotating parts 510 are first closed to form an insertion position. The overall width of the touch part 540 at the insertion position is smaller than the width of the upper part 131 of the channel, so that the touch part 540 can smoothly pass through the upper part 131 and the middle part 132 of the channel in turn to reach the lower part 133 of the channel. At this time, the manufacturer rotates the two rotating parts 510 to separate them from each other through the hand-held part 530 located outside the outer docking joint connection channel 130, and allows the touch parts 540 of the two rotating parts 510 to touch the two pin needles of the outer docking joint 220 respectively, thereby forming a touch position.
[0034] The two pins of the outer docking joint 220 can also be arranged to form an angle A, thereby further enhancing its anti-cheating function. In this case, if the two rotating parts 510 of the short-circuit calibration workpiece 500 are simply separated from each other, it will be difficult for the two contact portions 540 to simultaneously contact the two pins of the outer docking joint 220. However, by providing an extension portion 550 below the contact portion 540, the extended length of the extension portion 550 can be used to contact the two pins of the outer docking joint 220. The direction of the extension portion 550 can be arranged horizontally and perpendicular to the direction of expansion of the two contact portions 540. The expansion direction of the contact portion 540 is consistent with the direction of the outward expansion of the two pins to form the angle. This allows for a relatively larger space for the extension portion 550 and allows the extension portion 550 to more accurately contact the two pins when the contact position is established. In addition, when setting the extension portion 550, the problem of the extension portion 550 extending from the upper portion 131 of the channel also needs to be considered. Therefore, the total length of the two extension portions 550 in the extension direction should also be less than the width of the upper portion 131 of the channel, that is, less than 4 mm.
[0035] like Figure 6 、 7 As shown in Figures 8, 9 and 10, preferably, the short-circuit docking device 200 also includes an outer connecting seat body 230 and an inner connecting seat body 240 arranged up and down, the outer docking joint 220 is arranged in the outer connecting seat body 230, and the inner docking joint 210 is arranged in the inner connecting seat body 240, the upper part of the outer connecting seat body 230 is communicated with the lower part 133 of the channel, and the recessed connecting seat 120 is provided with a snap-on hook 121, and the snap-on hook 121 hooks the lower part of one side of the outer connecting seat body 230.
[0036] The structural arrangement of the outer connecting seat body 230 and the inner connecting seat body 240, on the one hand, can provide protection for the outer butt joint 220 and the inner butt joint 210; on the other hand, the separate seat body formed by the connection of the outer connecting seat body 230 and the inner connecting seat body 240 can be manufactured separately, and then assembled into the lower part 133 of the channel through the outer connecting seat body 230, thereby improving production efficiency; and the recessed connecting seat 120 is provided with a snap hook 121, which can hook the lower part of the outer connecting seat body 230 after the outer connecting seat body 230 is inserted into the lower part 133 of the channel, so that the short-circuit docking device 200 can be firmly connected to the lower part 133 of the channel, thereby preventing the electronic scale from falling due to the shaking caused by picking up and putting down the weighing object during use.
[0037] like Figure 11 、 12As shown, preferably, the circuit board 300 is further provided with a docking seat 320 at the short-circuit interface 310, and a docking cavity 321 is provided on the docking seat 320, and the short-circuit interface 310 is located in the docking cavity 321. It also includes a short-circuit socket 600, and a short-circuit plug 610 adapted to the short-circuit interface 310 is provided on the short-circuit socket 600. The short-circuit plug 610 is inserted into the docking cavity 321 and connected to the short-circuit interface 310. A barb 620 is further provided downwardly on the short-circuit socket 600, and a groove 330 is provided on the docking seat 320. The short-circuit socket 600 is engaged with the docking seat 320 through the barb 620 and the groove 330.
[0038] This structural arrangement allows the circuit board 300 to form a plug-in fit between the short-circuit interface 310 and the short-circuit socket 600, facilitating the separate processing and subsequent assembly of the circuit board 300 and the short-circuit socket 600, thereby improving production efficiency. The short-circuit socket 600 and its short-circuit plug 610 and barb 620 can be made of soft plastic. During the insertion of the barb 620, the manufacturer can simply apply a slight downward pressure to insert the barb 620 into the groove 330 so that the two engage, effectively securing the electronic scale during use. When removal is necessary, the manufacturer can also remove the short-circuit socket 600 from the docking socket 320 by pressing the barb 620 inward with their hands or using tools such as pliers, facilitating repair and replacement.
[0039] The short-circuit socket 600 and the inner docking head 210 of the short-circuit docking device 200 are connected to each other by wires. During assembly, the short-circuit socket 600 is directly plugged into the docking socket 320, and the short-circuit docking device 200 is directly plugged into the recessed connector 120, which makes assembly convenient and quick.
[0040] like Figure 2 、 3 5, as an example, it further includes a locking screw 140, which locks the joint cover 110 to the outer side of the electronic scale lower shell 100. This ensures the stability of the joint cover 110 after it is closed, and the locking screw 140 is also more convenient to remove.
[0041] A method for preventing cheating entry into an electronic scale calibration mode, using the aforementioned anti-cheating entry structure for the electronic scale calibration mode, further comprising the following steps: S1. Remove the docking connector cover 110 from the outer surface of the electronic scale lower housing 100 to expose the outer docking connector connection channel 130; S2. Take the short-circuit calibration workpiece 500 and place it in the insertion position. Then, move the contact portion 540 of the short-circuit calibration workpiece 500 downward until it reaches the bottom of the channel lower portion 133. S3. Driving the hand-held portion 530 of the short-circuit calibration workpiece 500 so that the two hand-held portions 530 rotate outward with the hinge portion 520 as the center, thereby driving the two contact portions 540 of the short-circuit calibration workpiece 500 or the extension portion 550 on the contact portion 540 to contact the two pins of the outer docking connector 220, thereby forming a contact position; S4. When the touch position is formed, if the current voltage V at the short-circuit interface 310 obtained by the circuit board 300 is less than or equal to the preset short-circuit voltage threshold, it is determined to be a short-circuit state; S5. Keep the short-circuit calibration workpiece 500 at the touch position until the time T entering the short-circuit state is greater than or equal to the preset minimum short-circuit time threshold and less than or equal to the preset maximum short-circuit time threshold, and then move the short-circuit calibration workpiece 500 away from the touch position. At this time, the calibration mode is performed.
[0042] The short-circuit calibration workpiece 500 is made of a conductive material, such as metal, so that the short-circuit calibration workpiece 500 is both conductive and strong. The short-circuit voltage threshold can be set to 0.2V, the minimum short-circuit time threshold can be set to 2 seconds, and the maximum short-circuit time threshold can be set to 4 seconds. Alternatively, the minimum short-circuit time threshold can be set to 1 second, and the maximum short-circuit time threshold can be set to 2 seconds. This creates another threshold, meaning that a short-circuit touch is not a simple touch, nor does it maintain the short-circuit state for a long time. Instead, the touch position must be released within a certain time to enter the calibration mode.
[0043] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.
Claims
1. An anti-cheating entry structure for an electronic scale calibration mode, comprising an electronic scale upper shell (700), an electronic scale lower shell (100), and a circuit board (300), wherein the electronic scale upper shell (700) and the electronic scale lower shell (100) have inner and outer side surfaces, the circuit board (300) is arranged on the inner side surface of the electronic scale lower shell (100), and a short-circuit interface (310) is provided on the circuit board (300), characterized in that: The inner side of the electronic scale upper shell (700) is provided with a locking column (710) extending in the direction of the electronic scale lower shell (100), and the outer end of the locking column (710) penetrates outward from the inner side of the electronic scale lower shell (100) and reaches the outer side of the electronic scale lower shell (100). The locking column (710) is provided with a locking hole (720) at a position beyond the outer side of the electronic scale lower shell (100). The locking hole (720) is provided with an anti-disassembly device (400) for preventing the electronic scale upper shell (700) and the electronic scale lower shell (100) from being opened. The electronic scale lower shell (100) is provided with a short-circuit docking device (200), and the short-circuit docking device (200) includes an inner docking joint (210) and an outer docking joint (220) connected to each other. The inner docking joint (210) faces the electronic scale. The upper shell (700) is provided with the outer butt joint (220) facing the lower shell (100) of the electronic scale, and the short-circuit interface (310) is connected to the inner butt joint (210) through a line; a detachable butt joint cover (110) is provided on the outer surface of the lower shell (100) of the electronic scale, and the butt joint cover (110) covers the outer butt joint (220); the lower shell (100) of the electronic scale is also provided with a recessed connection seat (120) recessed inwardly at the outer butt joint (220), and an outer butt joint connection channel (130) is provided in the recessed connection seat (120), the upper part of the outer butt joint connection channel (130) is covered by the butt joint cover (110), and the lower part of the outer butt joint connection channel (130) is communicated with the short-circuit docking device (200).
2. The anti-cheating entry structure for an electronic scale calibration mode according to claim 1, characterized in that: The anti-disassembly device (400) comprises an anti-disassembly fastener (430) and a locking rope (440). The anti-disassembly fastener (430) is provided with a fastener through hole (431). The locking rope (440) passes through the locking hole (720) and the fastener through hole (431) to connect the outer end of the locking column (710) and the anti-disassembly fastener (430). A lead seal portion (432) is provided at the fastener through hole (431).
3. The anti-cheating entry structure for an electronic scale calibration mode according to claim 1, characterized in that: The outer butt joint connecting channel (130) comprises an upper channel portion (131), a middle channel portion (132), and a lower channel portion (133); the upper channel portion (131), the middle channel portion (132), and the lower channel portion (133) are arranged from top to bottom and have increasing widths; the width of the outer butt joint (220) is greater than the width of the upper channel portion (131).
4. The anti-cheating entry structure for an electronic scale calibration mode according to claim 3, characterized in that: The width of the upper portion (131) of the channel is greater than 3 mm and less than 4 mm, and the width of the outer butt joint (220) is greater than 4 mm and less than 6 mm.
5. The anti-cheating entry structure for an electronic scale calibration mode according to claim 3, characterized in that: The short-circuit calibration workpiece (500) is also included. The short-circuit calibration workpiece (500) includes two symmetrically arranged rotating parts (510), the two rotating parts (510) are hinged to form a hinge portion (520), the rotating part (510) forms a hand-held part (530) at a position above the hinge portion (520), and the rotating part (510) forms a touch portion (540) at a position below the hinge portion (520). The short-circuit calibration workpiece (500) cooperates with the outer docking joint connection channel (130) to form an insertion position and a touch position. In the insertion position, the two touch portions (540) are close to each other and the total width of the two touch portions (540) is smaller than the width of the upper part (131) of the channel. In the touch position, the two touch portions (540) are separated from each other and each touches two pins of the outer docking joint (220).
6. The anti-cheating entry structure for an electronic scale calibration mode according to claim 5, characterized in that: The lower portion of the contact portion (540) is further provided with an extension portion (550) extending outward, and the two pin needles of the outer butt joint (220) form an angle A, the angle of the angle A is 20° to 40°, and the opening of the angle A faces the upper portion (131) of the channel. In the contact position, the two contact portions (540) are separated from each other and the extension portion (550) on the contact portion (540) respectively contacts the two pin needles of the outer butt joint (220).
7. The anti-cheating entry structure for an electronic scale calibration mode according to claim 3, characterized in that: The short-circuit docking device (200) further comprises an outer connecting seat body (230) and an inner connecting seat body (240) arranged upper and lower, the outer docking joint (220) being arranged in the outer connecting seat body (230), the inner docking joint (210) being arranged in the inner connecting seat body (240), the upper portion of the outer connecting seat body (230) being connected to the lower portion (133) of the channel, and a snap-on hook (121) being arranged on the indented connecting seat (120), the snap-on hook (121) being hooked to the lower portion of one side of the outer connecting seat body (230).
8. The anti-cheating entry structure for an electronic scale calibration mode according to claim 1, characterized in that: The circuit board (300) is further provided with a docking seat (320) at the short-circuit interface (310), and a docking cavity (321) is provided on the docking seat (320). The short-circuit interface (310) is located in the docking cavity (321). The circuit board (300) further includes a short-circuit socket (600), and a short-circuit plug (610) adapted to the short-circuit interface (310) is provided on the short-circuit socket (600). The short-circuit plug (610) is inserted into the docking cavity (321) and connected to the short-circuit interface (310). A barb (620) is further provided downwardly on the short-circuit socket (600), and a groove (330) is provided on the docking seat (320). The short-circuit socket (600) is engaged with the docking seat (320) through the barb (620) and the groove (330).
9. The anti-cheating entry structure for an electronic scale calibration mode according to claim 1, characterized in that: It also includes a locking screw (140), which locks the joint cover (110) and the outer side surface of the electronic scale lower shell (100).
10. A method for preventing cheating entry into an electronic scale calibration mode, characterized in that: The anti-cheating entry structure of the electronic scale calibration mode according to claim 6 further comprises the following steps: S1. Remove the docking joint cover (110) from the outer surface of the electronic scale lower shell (100), thereby exposing the outer docking joint connection channel (130); S2, taking the short-circuit calibration workpiece (500), placing the short-circuit calibration workpiece (500) in an insertion position, and then moving the contact portion (540) of the short-circuit calibration workpiece (500) downward until it reaches the bottom of the channel lower portion (133); S3, driving the handheld portion (530) of the short-circuit calibration workpiece (500) so that the two handheld portions (530) rotate outward with the hinge portion (520) as the center, thereby driving the two contact portions (540) of the short-circuit calibration workpiece (500) or the extension portion (550) on the contact portion (540) to respectively contact the two pins of the outer docking joint (220), thereby forming a contact position; S4, when the touch position is formed, if the current voltage V at the short-circuit interface (310) obtained by the circuit board (300) is less than or equal to a preset short-circuit voltage threshold, it is determined to be a short-circuit state; S5, maintaining the short-circuit calibration workpiece (500) at the touch position until the time T for entering the short-circuit state is greater than or equal to a preset minimum short-circuit time threshold and less than or equal to a preset maximum short-circuit time threshold, and then moving the short-circuit calibration workpiece (500) away from the touch position, at which time the calibration mode is performed.