Anti-cheating price computing scale

Abstract

An anti-cheating price computing scale comprises a scale body, the scale body comprises a shell and a seat body which are connected with each other, and a space between the shell and the seat body forms an accommodating cavity; the weighing device is arranged in the accommodating cavity and is used for measuring the weight of an object on the scale body; the anti-disassembly device is arranged in the containing cavity and electrically connected to the weighing device, the anti-disassembly device comprises an elastic switch, one of the shell and the base abuts against the end, not provided with the elastic switch, of the anti-disassembly device, and the other one of the shell and the base abuts against the elastic switch, so that the elastic switch is in a compressed state, and the anti-disassembly device and the weighing device are in a communicated state; the weighing device works normally; when the anti-disassembly device is separated from the seat body or the shell, the elastic switch automatically bounces off under the action of elastic force, the anti-disassembly device and the weighing device are in a disconnected state, and the weighing device stops working.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic scales, in particular to an anti-cheating pricing scale. Background Art

[0002] An electronic scale, also known as a digital indicating scale, is an electronic weighing instrument in which the load weight is balanced by the creep reaction of a sensor and the digital weighing result is displayed on a display screen. Accurate measurement results are the basis for protecting the rights and interests of consumers. If there is cheating behavior in the electronic scale, consumers may be misled or suffer economic losses; some dishonest merchants may manipulate the electronic scale to obtain extra profits, which will affect the interests of other honest operators.

[0003] The current mainstream anti-disassembly technology for electronic scales is mainly lead seals or anti-tear labels, which are mainly achieved through physical means. For example, anti-tear labels are pasted outside the screw hole positions on the electronic scale, or lead seals are applied at the joint positions of the scale body of the electronic scale. This method has drawbacks. Both anti-tear labels and lead seals are easily forged and cannot effectively prevent the electronic scale from being modified. Summary of the Utility Model

[0004] Aiming at the deficiencies in the background art, the purpose of the utility model is to provide an anti-cheating pricing scale.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-cheating pricing scale, comprising

[0007] A scale body, the scale body includes a housing and a base body connected to each other, and a receiving cavity is formed in the space between the housing and the base body;

[0008] A weighing device, arranged in the receiving cavity, for measuring the weight of an article on the scale body; and

[0009] An anti-disassembly device, arranged in the receiving cavity and electrically connected to the weighing device. The anti-disassembly device includes an elastic switch. One of the housing or the base body abuts against one end of the anti-disassembly device where the elastic switch is not provided, and the other abuts against the elastic switch, so that the elastic switch is in a compressed state, and the anti-disassembly device and the weighing device are in a connected state, and the weighing device works normally;

[0010] When the anti-disassembly device is separated from the base body or the housing, the elastic switch automatically pops open under the action of elastic force, the anti-disassembly device and the weighing device are in a disconnected state, and the weighing device stops working.

[0011] Further, the weighing device further includes a first controller and a weight sensor electrically connected to each other, and the first controller is used to receive the article weight data of the weight sensor.

[0012] Further, it further includes a second controller, and the second controller is electrically connected to the first controller and the anti-disassembly device respectively; when the elastic switch pops open, the second controller receives the disconnection signal and controls the first controller to stop working.

[0013] Further, it further includes a power supply, and the power supply is electrically connected to the first controller, the second controller and the anti-disassembly device respectively; after the first controller is powered off, the power supply supplies power to the first controller.

[0014] Further, it further includes a sealed box, and the power supply and the second controller are encapsulated in the sealed box.

[0015] Further, it further includes a bottom plate, the bottom plate is arranged on the inner bottom wall of the seat body, and the anti-disassembly device is installed on the bottom plate.

[0016] Further, a shrapnel is arranged on the top of the anti-disassembly device, an arc portion is arranged at one end of the shrapnel away from the elastic switch, and the convex surface of the arc portion abuts against the inner side wall of the housing; one side of the shrapnel facing the elastic switch abuts against the elastic switch, and a sliding hole adapted to the elastic switch is further arranged on the top of the anti-disassembly device, and the elastic switch is slidably connected in the sliding hole.

[0017] Further, the anti-disassembly device is further provided with a connection port, and the connection port is electrically connected to the second controller and the power supply respectively.

[0018] Further, the weighing body further includes a weighing pan, the weighing pan is arranged outside the housing, and the weight sensor is arranged below the weighing pan and connected to the weighing pan.

[0019] Further, the weighing body further includes a display screen and a numeric keypad, the display screen and the numeric keypad are electrically connected to the first controller respectively, the display screen and the numeric keypad are arranged on the side wall of the housing, and the display screen is arranged on one side of the numeric keypad.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1. An anti-cheating weighing scale proposed by the present utility model judges whether the weighing body of the electronic scale is disassembled through the anti-disassembly device, effectively reducing the situation where lawbreakers and merchants tamper with the internal configuration of the weighing scale; if lawbreakers and merchants forcibly disassemble the weighing body, the anti-disassembly device automatically locks the weighing device. This device has a simple structure and ingenious design, effectively protecting the rights and interests of consumers.

[0022] 2. A cheating-proof pricing scale proposed by the present utility model, through the setting of the weighing device, when in normal use, the first controller receives the data information of the weight sensor and the instructions of the digital keyboard, and presents the final result on the display screen.

[0023] 3. A cheating-proof pricing scale proposed by the present utility model, through the setting of the second controller, when the scale body is disassembled, the second controller obtains the signal that the elastic switch is disconnected, and the second controller will control the first controller to be locked and unable to work, making the entire scale body in a dead state, and finally can only be returned to the factory.

[0024] 4. A cheating-proof pricing scale proposed by the present utility model, through the setting of the power supply, the power supply supplies power to the second controller and the anti-disassembly device, and at the same time detects that after the first controller is powered off, it supplies reverse power to it to prevent the first controller from being unable to be locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of a cheating-proof pricing scale of the present utility model;

[0027] Figure 2 It is an exploded view of a cheating-proof pricing scale of the present utility model;

[0028] Figure 3 It is a schematic diagram of the anti-disassembly device of a cheating-proof pricing scale of the present utility model;

[0029] Figure 4 It is a cross-sectional view of a cheating-proof pricing scale of the present utility model;

[0030] Figure 5 For Figure 4 the enlarged view of part A.

[0031] In the figure, 10, housing; 20, base; 301, first controller; 302, weight sensor; 40, anti-disassembly device; 50, sealed box; 60, weighing pan; 70, display screen; 80, digital keyboard; 401, elastic switch; 201, bottom plate; 4021, arc part; 402, elastic piece; 403, connection port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will Figures 1-5 describe the present utility model in detail.

[0033] An anti-cheating pricing scale, such as Figure 1 As shown, the scale body includes a housing 10 and a base 20 connected to each other, with the space between the housing 10 and the base 20 forming an accommodating chamber; a weighing device, disposed in the accommodating chamber, for measuring the weight of an object on the scale body; and an anti-tampering device 40, disposed in the accommodating chamber and electrically connected to the weighing device, the anti-tampering device 40 including an elastic switch 401, one of the housing 10 or the base 20 abuts against an end of the anti-tampering device 40 where the elastic switch 401 is not provided, and the other abuts against the elastic switch 401, so that the elastic switch 401 is in a compressed state, the anti-tampering device 40 and the weighing device are in a connected state, and the weighing device operates normally;

[0034] When the anti-tamper device 40 is separated from the base 20 or the housing 10, the elastic switch 401 automatically springs open under the action of the elastic force, disconnecting the anti-tamper device 40 from the weighing device, and the weighing device stops working. Specifically, once the elastic switch 401 is opened, it cannot be restored to its original conductive state even if it is manually pressed back, further improving safety.

[0035] In this embodiment, if Figure 2 As shown, the weighing device further includes a first controller 301 and a weight sensor 302 electrically connected to each other. The first controller 301 is used to receive object weight data from the weight sensor 302 .

[0036] In this embodiment, a second controller is further included, which is electrically connected to the first controller 301 and the anti-disassembly device 40 respectively; when the elastic switch 401 is opened, the second controller receives a disconnection signal and controls the first controller 301 to stop working.

[0037] In this embodiment, a power supply is further included. The power supply is electrically connected to the first controller 301 , the second controller and the anti-tampering device 40 . After the first controller 301 is powered off, the power supply supplies power to the first controller 301 .

[0038] In this embodiment, a sealed box 50 is further included, and the power supply and the second controller are packaged in the sealed box 50. Specifically, the first controller 301 and the second controller are both control circuit boards.

[0039] In this embodiment, if Figure 3 and Figure 5 As shown, the switch further includes a base plate 201, which is mounted on the inner bottom wall of the base body 20. The anti-tamper device 40 is mounted on the base plate 201. The base plate 201 is provided with a plug-in hole, and the switch is provided with a plug-in block that matches the plug-in hole. The base plate 201 is provided with a plug-in hole, and the switch is provided with a plug-in block that matches the plug-in hole.

[0040] In this embodiment, a shrapnel 402 is provided at the top of the anti-disassembly device 40. An arc portion 4021 is provided at one end of the shrapnel 402 away from the elastic switch 401. The convex surface of the arc portion 4021 abuts against the inner side wall of the housing 10. One side of the shrapnel 402 facing the elastic switch 401 abuts against the elastic switch 401. A sliding hole adapted to the elastic switch 401 is further provided at the top of the anti-disassembly device 40, and the elastic switch 401 is slidably connected in the sliding hole. Further, the anti-disassembly device 40 is further provided with a connection port 403, and the connection port 403 is electrically connected to the second controller and the power supply respectively.

[0041] In this embodiment, as Figure 4 shown, the weighing body further includes a weighing pan 60. The weighing pan 60 is provided outside the housing 10, and the weight sensor 302 is provided below the weighing pan 60 and connected to the weighing pan 60.

[0042] In this embodiment, the weighing body further includes a display screen 70 and a numeric keypad 80. The display screen 70 and the numeric keypad 80 are respectively electrically connected to the first controller 301. The display screen 70 and the numeric keypad 80 are provided on the side wall of the housing 10, and the display screen 70 is provided on one side of the numeric keypad 80.

[0043] Specifically, a sensitive contact probe is provided at one end of the elastic switch 401 away from the shrapnel 402. When the shrapnel 402 is in a compressed state, the sensitive contact probe is electrically connected to the switch. When the shrapnel 402 bounces open, the sensitive contact probe is disconnected from the switch. The second controller obtains the disconnection signal of the anti-disassembly device 40, and the second controller controls the first controller 301 to stop working.

[0044] With the above technical solution, it is very difficult for humans to remove the second controller unless the entire weighing body is destroyed, and the position of the anti-disassembly device 40 can be flexibly set so that the position of the anti-disassembly device 40 randomly appears at any part of the weighing body. In this way, only the factory staff know the position of the anti-disassembly device 40 of each weighing body, making it more costly and difficult for unscrupulous merchants to find the accommodation cavity. [[ID=!6]]

[0045] Since the shrapnel 402 is in a compressed state, once the housing 10 is opened or the base 20 is moved, the shrapnel 402 is easily bounced open. When the second controller receives the disconnection signal of the anti-disassembly device 40, the first controller 301 is locked by the second controller, and then the first controller stops working, and the weighing body cannot conduct transactions.

[0046] In other embodiments, the second controller may also be communicatively connected to the first controller 301 by wireless communication. It is relatively easy to turn on or off the control circuit through the second controller. A switching element can be set in the control circuit of the first controller 301, and then the second controller can control the on and off of the switching element to turn on or off the control circuit. On the other hand, in this embodiment, a self-destruction program can be set in the first controller 301. The self-destruction program overwrites the original program of the first controller 301 by covering the data, making the first controller 301 irrecoverable. This makes the first controller 301 equivalent to a disposable item. Once the elastic piece 402 fails, the first controller 301 can still ensure the conduction or disconnection of the control circuit, and it cannot return to the original conductive state after disconnection, further ensuring that the control circuit can be effectively disconnected when the scale is disassembled to prevent continued transactions. The above self-destruction program is common knowledge in the field of computer programming and can overwrite the original data through any existing data covering algorithm, because data covering is irreversible.

[0047] A cheating-proof weighing scale provided by the present utility model has the following usage method:

[0048] During specific use, when the cheating-proof electronic scale is in a normal state, the elastic switch 401 is pressed by the elastic piece 402, so that the sensitive contact probe on the elastic switch 401 is in close contact with the switch. When an illegal person and a merchant disassemble the scale body, the elastic piece 402 will quickly bounce off under the elastic action, and at the same time, the sensitive contact probe of the elastic switch 401 is disconnected. The second controller receives the disconnection signal and controls the first controller 301 to stop working and lock itself, making the entire scale body in a dead state. Finally, it can only be returned to the factory, and it requires the staff to repair and restart the first controller 301 at the factory to prevent the merchant from cheating on the scale body.

[0049] The above embodiments are only used to illustrate the technical concept and features of the present utility model, and their purpose is to enable those skilled in the art to understand the content of the present utility model and implement it, and cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An anti-cheating weighing scale, characterized in that, including a weighing body, the weighing body includes a housing and a base body connected to each other, and a space between the housing and the base body forms a receiving cavity; a weighing device, arranged in the receiving cavity, for measuring the weight of an article on the weighing body; and an anti-tampering device, arranged in the receiving cavity and electrically connected to the weighing device, the anti-tampering device includes an elastic switch, one of the housing or the base body abuts against one end of the anti-tampering device where the elastic switch is not provided, and the other abuts against the elastic switch, so that the elastic switch is in a compressed state, and the anti-tampering device and the weighing device are in a connected state, and the weighing device works normally; when the anti-tampering device is separated from the base body or the housing, the elastic switch automatically pops open under the action of elastic force, the anti-tampering device and the weighing device are in a disconnected state, and the weighing device stops working.

2. The anti-cheating weighing scale according to claim 1, characterized in that, The weighing device further includes a first controller and a weight sensor that are electrically connected to each other, and the first controller is used to receive the article weight data of the weight sensor.

3. The anti-cheating price scale according to claim 2, wherein, It further includes a second controller, and the second controller is electrically connected to the first controller and the anti-tampering device respectively; when the elastic switch pops open, the second controller receives a disconnection signal and controls the first controller to stop working.

4. The anti-cheating weighing scale according to claim 3, characterized in that, It further includes a power supply, and the power supply is electrically connected to the first controller, the second controller and the anti-tampering device respectively; after the first controller is powered off, the power supply supplies power to the first controller.

5. The anti-cheating pricing scale according to claim 4, characterized in that, It further includes a sealed box, and the power supply and the second controller are encapsulated in the sealed box.

6. The anti-cheating weighing scale according to claim 1, wherein It further includes a bottom plate, the bottom plate is arranged on the inner bottom wall of the base body, and the anti-tampering device is installed on the bottom plate.

7. The anti-cheating weighing scale according to claim 1, wherein A shrapnel is arranged on the top of the anti-tampering device, an arc portion is arranged at one end of the shrapnel away from the elastic switch, and the convex surface of the arc portion abuts against the inner side wall of the housing; one side of the shrapnel facing the elastic switch abuts against the elastic switch, and a sliding hole adapted to the elastic switch is further arranged on the top of the anti-tampering device, and the elastic switch is slidably connected in the sliding hole.

8. The anti-cheating weighing scale according to claim 4, characterized in that, The anti-tampering device is further provided with a connection port, and the connection port is electrically connected to the second controller and the power supply respectively.

9. The anti-cheating pricing scale according to claim 2, characterized in that, The weighing body further includes a weighing pan, the weighing pan is arranged outside the housing, and the weight sensor is arranged below the weighing pan and connected to the weighing pan.

10. The anti-cheating pricing scale according to claim 9, characterized in that, The weighing body further includes a display screen and a numeric keypad, the display screen and the numeric keypad are electrically connected to the first controller respectively, the display screen and the numeric keypad are arranged on the side wall of the housing and the display screen is arranged on one side of the numeric keypad; the first controller receives and processes the data of the weight sensor and the instructions of the numeric keypad, and further controls the display screen to display the weight of the article.

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