Anti-cheating structure for electronic scale

Abstract

The utility model discloses an anti-cheating structure for an electronic scale, which comprises a PCB (printed circuit board), a fixed seat, a surface cover fixed relative to the fixed seat, an insertion block arranged on the surface cover, and a conductive piece and a conductive elastic piece which are arranged on the fixed seat and connected with the PCB, and the conductive elastic piece is abutted against the insertion block to keep an elastic deformation state. When the surface cover is detached relative to the fixed seat, the insertion block is driven to be separated from the conductive elastic piece, so that the conductive elastic piece deforms and restores to contact with the conductive piece so as to output a locking electric signal to the PCB; by adopting the structure, when a user disassembles the surface cover, the insertion block is separated from the conductive elastic piece, so that the conductive elastic piece and the conductive piece are connected to output a locking electric signal to the PCB, and the user cannot perform cheating modification behaviors after locking.

Description

Technical Field

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

[0002] As a weighing tool, an electronic scale is required to have high weighing accuracy. However, it is easy to disassemble the electronic scale and modify the weighing accuracy of its mainboard module, making it have a weighing cheating function. In order to prevent this from happening, existing electronic scales generally use pressure sensors, photoelectric sensors and other detection elements to detect whether the bottom shell and the top shell of the electronic scale have been disassembled. This increases the number of electronic components and thus increases the cost, and makes the internal structure of the electronic scale more complicated, making it inconvenient to assemble the electronic scale.

[0003] The applicant disclosed an anti-cheating structure for electronic scales in a patent with authorization announcement number CN218330226U. The electronic scale is provided with a lead seal between the protective cover and the bottom shell of the scale body. By observing the integrity of the lead seal, it is possible to check whether the electronic scale has been disassembled for weighing cheating settings. However, this anti-cheating measure has a lag. After the merchant disassembles the electronic scale for cheating, it is necessary for supervisory personnel to check to discover the existence of cheating. Therefore, a new anti-cheating structure for electronic scales is currently proposed. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an anti-cheating structure for an electronic scale, in which when a user removes the face cover, the plug-in block is separated from the conductive elastic part, so that the conductive elastic part and the conductive part are connected to output a locking electrical signal to the PCB board, and after locking, the user cannot perform cheating modification behavior.

[0005] The technical solution adopted by the utility model to solve the technical problem is an anti-cheating structure for an electronic scale, comprising a PCB board, a fixing seat, a face cover relatively fixed to the fixing seat, an insert block arranged on the face cover, and a conductive member and a conductive elastic member arranged on the fixing seat and connected to the PCB board, wherein the conductive elastic member abuts against the insert block to maintain an elastic deformation state, and when the face cover is detached from the fixing seat, the insert block is driven to separate from the conductive elastic member, so that the conductive elastic member is deformed and restored to contact the conductive member, thereby outputting a locking electrical signal to the PCB board.

[0006] As a further improvement of the present invention, the insert block is arranged between the conductive member and the conductive elastic member and is made of insulating material.

[0007] As a further improvement of the present invention, the conductive elastic member includes a fixing portion, a contact portion abutting against the plug block, and an elastic bending portion arranged between the fixing portion and the contact portion, and the contact portion can be reset and rotated around the elastic bending portion.

[0008] As a further improvement of the present invention, the conductive elastic member includes a fixing portion and a spring arranged on the fixing portion.

[0009] As a further improvement of the present invention, the fixing seat includes a bottom shell and a mounting structure arranged on the bottom shell, and the conductive member and the conductive elastic member can be detachably connected to the mounting structure.

[0010] As a further improvement of the utility model, the mounting structure is provided with a guide column, and the conductive member and the conductive elastic member are provided with a guide through hole for the guide column to be inserted.

[0011] As a further improvement of the utility model, the upper surface of the mounting structure is provided with a matching groove matching with the insert block.

[0012] As a further improvement of the present invention, both the conductive member and the conductive elastic member have an L-shaped fixing portion.

[0013] As a further improvement of the present invention, the conductive member has a fixing portion and a matching portion connected to the top of the fixing portion, and the matching portion is bent toward a side away from the insert block.

[0014] As a further improvement of the utility model, both the front and rear sides of the insert block are provided with limit blocks, and the conductive member and the conductive elastic member are located between the two limit blocks.

[0015] The beneficial effects of the utility model are at least:

[0016] 1. Compared with anti-cheating means such as lead seals, the present application is real-time and can directly lock the electronic scale when others want to cheat by removing the cover. Compared with the anti-cheating structure of setting micro switches in the upper and lower directions, the present application can prevent the electronic scale from being accidentally subjected to a large impact by making the conductive elastic part abut against the plug-in block, and the conductive elastic part resets and triggers the locking electrical signal when disassembled, thereby preventing the internal structure of the electronic scale from shifting at the moment of impact, causing the micro switch trigger structure to not be pressed, causing the micro switch to operate, and causing the electronic scale to be locked incorrectly. Moreover, since the electronic scale is usually subjected to downward pressure when in use, the present application can also avoid damage caused by deformation of the entire machine during long-term use, and the structure of the present application is simple.

[0017] 2. When the plug is set to an insulating material, the plug can be closely attached to the conductive part and the conductive elastic part, making the structure of the whole machine more compact and effective, and preventing accidental locking.

[0018] 3. The conductive member and the conductive elastic member are arranged on the mounting structure of the bottom shell, so as to isolate the conductive member and the conductive elastic member from other electronic components and reduce the occurrence of short circuit and false touch locking.

[0019] 4. The conductive member and the conductive elastic member are detachably connected to the mounting structure through a threaded structure, and the conductive member and the conductive elastic member are prevented from deviating through the provision of a guide column.

[0020] 5. The setting of the matching groove can make the plug-in block completely inserted between the conductive part and the conductive elastic part, thus preventing the conductive elastic part from accidentally contacting the conductive part. Similarly, the setting of the limit block can further prevent the deviation of the conductive part and the conductive elastic part, so that the conductive part and the conductive elastic part can be triple-locked to avoid accidental locking.

[0021] 6. In the case of compact structural installation, for example, when the plug is tightly inserted and fits between the conductive part and the conductive elastic part, the setting of the matching part can provide guidance when the plug is inserted, avoiding pushing the conductive part to one side of the conductive elastic part during insertion, thereby directly damaging the conductive part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model in a normal state;

[0023] Figure 2 It is a structural explosion diagram of the utility model;

[0024] Figure 3 This is a structural front view of the utility model in a normal state;

[0025] Figure 4 It is a structural front view of the utility model after the plug-in block is separated from the conductive member. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] Reference Figure 1-4 The utility model proposes an anti-cheating structure for an electronic scale, comprising a PCB board, a fixing seat 1, a face cover 2 fixed relatively to the fixing seat 1, an insert block 3 arranged on the face cover 2, and a conductive member 4 and a conductive elastic member 5 arranged on the fixing seat 1 and connected to the PCB board. The conductive elastic member 5 abuts against the insert block 3 to maintain an elastic deformation state. When the face cover 2 is detached from the fixing seat 1, the insert block 3 is driven to separate from the conductive elastic member 5, so that the conductive elastic member 5 is deformed and restored to contact the conductive member 4, thereby outputting a locking electrical signal to the PCB board.

[0028] In the prior art, some anti-cheating measures are to check whether the electronic scale has been disassembled for weighing cheating settings by observing the integrity of the lead seal, but this anti-cheating measure has a lag. After the merchant disassembles the electronic scale for cheating, it is necessary for supervisors to check to discover the existence of cheating. This application can directly lock the electronic scale when others want to cheat by removing the cover to modify the behavior, thereby avoiding the possibility of cheating.

[0029] In the prior art, there is also an anti-cheating method that presses the micro switch by the upper and lower covers of the electronic scale. After the upper and lower covers are closed, the micro switch is pressed in the up and down directions to maintain a normally closed state. When the upper and lower covers are separated, the micro switch is actuated to lock the electronic scale. However, there are corresponding technical problems. First, since the upper and lower covers of the electronic scale press the micro switch in the up and down directions, when the electronic scale is transported or subjected to a large impact at ordinary times, it is easy to cause the micro switch to actuate instantly, causing the electronic scale to be locked; second, when used for a long time or subjected to a large impact, the micro switch will be damaged due to the deformation of the whole machine, causing the electronic scale to be locked. In addition, in order to reliably press the micro switch, it is necessary to ensure that it is pressed tightly but not over-pressed to cause damage. Therefore, the difficulty and cost are very high in terms of process and design.

[0030] The present application adopts a method of blocking the conductive member 4 and the conductive elastic member 5 on the left and right. Even if the electronic scale is subjected to a large impact, the conductive member 4 and the conductive elastic member 5 will not be deformed or damaged. For example, when the face cover 2 is subjected to a large impact, the plug block 3 will move downward for a distance, but the plug block 3 is used to block the connection between the conductive member 4 and the conductive elastic member 5. Even if it moves downward for a distance, the impact force will not act on the conductive member 4. When acting on the conductive elastic member 5, the conductive elastic member 5 will not be affected because it is elastic.

[0031] Reference Figure 1-4 The plug block 3 is arranged between the conductive member 4 and the conductive elastic member 5 and is made of insulating material. When the plug block 3 is set to be made of insulating material, the plug block 3 can be tightly fitted on the conductive member 4 and the conductive elastic member 5, making the structure of the whole machine more compact and effective, and also preventing accidental touch and lock.

[0032] Of course, the insert block 3 may not be insulated, as long as it is separated from the conductive member 4 by a certain distance.

[0033] Reference Figure 2 It can be seen that the conductive elastic member 5 includes a fixed portion 41, a contact portion 52 abutting against the plug block 3, and an elastic bending portion 53 arranged between the fixed portion 41 and the contact portion 52, and the contact portion 52 can be reset and rotated around the elastic bending portion 53; the conductive elastic member 5 is a spring sheet structure, which can maintain a deformed state for a long time and is not easy to fatigue.

[0034] As a further improvement of the present invention, the conductive elastic member 5 includes a fixing portion 41 and a spring disposed on the fixing portion 41 .

[0035] Reference Figure 1 and Figure 2 It can be seen that the fixing base 1 includes a bottom shell 11 and a mounting structure 12 arranged on the bottom shell 11 , and the conductive member 4 and the conductive elastic member 5 can be detachably connected to the mounting structure 12 .

[0036] The conductive member 4 and the conductive elastic member 5 are arranged on the mounting structure 12 of the bottom shell 11 , so as to isolate the conductive member 4 and the conductive elastic member 5 from other electronic components, thereby reducing the occurrence of short circuit and false touch locking.

[0037] As a further improvement of the utility model, the mounting structure 12 is provided with a guide column 121, and the conductive member 4 and the conductive elastic member 5 are provided with a guide through hole 42 for inserting the guide column 121; the conductive member 4 and the conductive elastic member 5 are detachably connected to the mounting structure through a threaded structure, and the conductive member 4 and the conductive elastic member 5 are prevented from deviating by the setting of the guide column 121.

[0038] As a further improvement of the present invention, a matching groove 122 matching with the plug block 3 is provided on the upper surface of the mounting structure 12; the setting of the matching groove 122 can make the plug block 3 completely inserted between the conductive part 4 and the conductive elastic part 5, thereby preventing the conductive elastic part 5 from accidentally contacting the conductive part 4, for example, avoiding the situation where the plug block 3 moves upward for a certain distance when vibrated, resulting in the plug block 3 failing to effectively block the conductive elastic part 5, thereby causing the conductive elastic part 5 to contact the conductive part 4 and be incorrectly locked.

[0039] As a further improvement of the present invention, the conductive member 4 and the conductive elastic member 5 both have an L-shaped fixing portion 41 .

[0040] As a further improvement of the present invention, the conductive member 4 has a fixing portion 41 and a matching portion 43 connected to the top of the fixing portion 41 , and the matching portion 43 is bent toward a side away from the insert block 3 .

[0041] In the case of compact structural installation, for example, when the plug block 3 is tightly inserted and fits between the conductive member 4 and the conductive elastic member 5, the setting of the matching portion 43 can provide guidance when the plug block 3 is inserted, thereby avoiding pushing the conductive member 4 to one side of the conductive elastic member 5 during insertion, thereby directly damaging the conductive member 4.

[0042] As a further improvement of the present invention, limit blocks 31 are provided on the front and rear sides of the plug block 3, and the conductive member 4 and the conductive elastic member 5 are located between the two limit blocks 31; the setting of the limit blocks 31 can also further prevent the deviation of the conductive member 4 and the conductive elastic member 5, so that the conductive member 4 and the conductive elastic member 5 can achieve triple locking to avoid accidental locking, wherein the triple locking specifically includes the guide column 121, the threaded connection and the limit block 31.

Claims

1. An anti-cheating structure for an electronic scale, characterized in that: The invention comprises a PCB board, a fixing seat (1), a cover (2) fixed relative to the fixing seat (1), an insert block (3) arranged on the cover (2), and a conductive member (4) and a conductive elastic member (5) arranged on the fixing seat (1) and connected to the PCB board, wherein the conductive elastic member (5) abuts against the insert block (3) to maintain an elastic deformation state, and when the cover (2) is detached from the fixing seat (1), the insert block (3) is driven to separate from the conductive elastic member (5), so that the conductive elastic member (5) is deformed and restored to contact the conductive member (4), thereby outputting a locking electrical signal to the PCB board.

2. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The insert block (3) is arranged between the conductive member (4) and the conductive elastic member (5) and is made of insulating material.

3. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The conductive elastic member (5) comprises a fixing portion (41), a contact portion (52) abutting against the plug block (3), and an elastic bending portion (53) arranged between the fixing portion (41) and the contact portion (52), wherein the contact portion (52) can be reset and rotated around the elastic bending portion (53).

4. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The conductive elastic member (5) comprises a fixing portion (41) and a spring arranged on the fixing portion (41).

5. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The fixing seat (1) comprises a bottom shell (11) and a mounting structure (12) arranged on the bottom shell (11), and the conductive member (4) and the conductive elastic member (5) are both detachably connected to the mounting structure (12).

6. The anti-cheating structure for electronic scales according to claim 5, characterized in that: The mounting structure (12) is provided with a guide column (121), and the conductive member (4) and the conductive elastic member (5) are provided with a guide through hole (42) into which the guide column (121) can be inserted.

7. The anti-cheating structure for electronic scales according to claim 5, characterized in that: The upper surface of the mounting structure (12) is provided with a matching groove (122) matching with the insert block (3).

8. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The conductive member (4) and the conductive elastic member (5) both have an L-shaped fixing portion (41).

9. The anti-cheating structure for electronic scales according to claim 1, characterized in that: The conductive member (4) comprises a fixing portion (41) and a matching portion (43) connected to the top of the fixing portion (41), and the matching portion (43) is bent towards a side away from the plug block (3).

10. The anti-cheating structure for electronic scales according to claim 1, characterized in that: Limit blocks (31) are provided on both the front and rear sides of the insert block (3), and the conductive member (4) and the conductive elastic member (5) are located between the two limit blocks (31).

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