Anti-disassembly structure of weighing apparatus and weighing apparatus structure
By setting the anti-tamper circuit board and the normally closed state of the anti-tamper switch in the weighing instrument, the problem of unauthorized disassembly of the weighing instrument is solved, the safety and compliance of the equipment are achieved, and self-healing protection and remote recovery functions are provided.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-24
AI Technical Summary
Existing electronic scales or price-computing scales are easily disassembled by third parties without authorization, resulting in malicious modification of circuits or sensors, which can lead to manipulation of weighing results and pose a risk of commercial fraud or evasion of supervision.
Design an anti-tamper structure including an anti-tamper circuit board and an anti-tamper switch. By setting the anti-tamper switch to be normally closed and connecting it to the circuit board, the circuit board is locked when it is removed, preventing unauthorized disassembly and modification.
It effectively prevents weighing instruments from being illegally disassembled or modified, improves equipment safety and reliability, provides compliance assurance, and tracks illegal operations by recording logs in the cloud, reducing manufacturer liability and lowering return-to-factory costs.
Smart Images
Figure CN224034758U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of weighing apparatus, in particular to a weighing apparatus anti-disassembly structure and weighing apparatus structure. BACKGROUND
[0002] Weighing apparatus is the instrument that utilizes hooke's law or the lever balance principle of force to determine the mass of object. For example, electronic scale or pricing scale, the electronic scale or pricing scale on the market at present mostly is not anti-disassembly, therefore can exist following shortcoming:
[0003] First, if third party is privately disassembled, manufacturer can not trace back the responsibility of tampering and bear legal risk;
[0004] Second, when the scale does not have anti-disassembly design, internal circuit or sensor can be maliciously disassembled and refitted, resulting in weighing result being manipulated, being used for commercial fraud or evading supervision.
[0005] Therefore, the present application provides a weighing apparatus anti-disassembly structure and weighing apparatus structure. CONTENT OF UTILITY MODEL
[0006] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a weighing apparatus anti-disassembly structure, which is provided with an anti-disassembly device, can effectively prevent others from disassembling, and when the bottom plate or the main body front cover is disassembled, the anti-disassembly switch resets, the anti-disassembly circuit board identifies and locks the circuit board, and the weighing apparatus cannot be used, thereby overcoming the problems caused by private disassembly or malicious refitting of others.
[0007] The utility model further provides a weighing apparatus structure.
[0008] The weighing apparatus anti-disassembly structure comprises a main body, a main body upper cover, a bottom plate, a main body front cover, a control panel and an anti-disassembly device.
[0009] The main body upper cover is provided with a first mounting groove, is hollow inside, and is provided with an opening at the bottom.
[0010] The bottom plate is arranged below the opening of the main body upper cover.
[0011] The main body front cover is arranged at the opening of the first mounting groove.
[0012] The control panel is arranged inside the main body front cover and located in the first mounting groove.
[0013] The anti-disassembly device is arranged in the first mounting groove.
[0014] The anti-disassembly device comprises an anti-disassembly circuit board and an anti-disassembly switch arranged on the anti-disassembly circuit board, a first step is arranged on the bottom plate for abutting against the anti-disassembly switch, a second step is arranged on the inner side of the main body front cover for abutting against the anti-disassembly circuit board, so that the anti-disassembly switch is in a normally closed state, and the anti-disassembly circuit board is electrically connected with the control panel.
[0015] After the anti-disassembly device is installed in place, the anti-disassembly switch is in a normally closed state, and when someone disassembles from the bottom plate or the main body front cover, the anti-disassembly switch is reset, the anti-disassembly circuit board recognizes and plays a role in locking the circuit board, and the main body front cover is mainly locked through the circuit board to achieve the effect of anti-disassembly.
[0016] In some embodiments of the utility model, the control panel comprises a first circuit board, a display screen and a plurality of operation buttons arranged on the first circuit board, and the display screen and the plurality of operation buttons are electrically connected with the first circuit board.
[0017] In some embodiments of the utility model, the surface of the main body front cover is further covered with a protective layer.
[0018] In some embodiments of the utility model, a placing groove is arranged on the main body upper cover and located at the first mounting groove, and the protective layer is embedded in the placing groove.
[0019] In some embodiments of the utility model, the anti-disassembly device further comprises a battery, the battery is electrically connected with the anti-disassembly circuit board, and the anti-disassembly switch is electrically connected with the anti-disassembly circuit board.
[0020] In some embodiments of the utility model, a containing groove is further arranged on the upper end surface of the main body upper cover, the battery is arranged in the containing groove, a first channel is arranged between the containing groove and the first mounting groove, and a waterproof head is arranged at the first channel.
[0021] In some embodiments of the utility model, a second channel for the anti-disassembly switch to pass through is arranged at the bottom of the first mounting groove, and the anti-disassembly switch is arranged towards the bottom plate.
[0022] In some embodiments of the utility model, a sealing gasket is further arranged at the second channel corresponding to the bottom of the first mounting groove, the sealing gasket comprises a horizontal part and a protruding part arranged on the horizontal part, and the inside of the protruding part is hollow for covering the anti-disassembly switch.
[0023] In some embodiments of the utility model, the control panel is locked on the main body front cover through a plurality of first screws, and the main body front cover is locked on the main body upper cover through a plurality of second screws.
[0024] In some embodiments of the utility model, the main body front cover is further provided with a avoiding position for avoiding the display and the operation buttons.
[0025] In some embodiments of the utility model, the anti -disassembly circuit board is locked in the first installation groove bottom through third screw, one third screw is locked on the main part upper cover after passing through the anti -disassembly circuit board, the other third screw is locked on the main part upper cover after passing through the first step and the anti -disassembly circuit board.
[0026] In some embodiments of the utility model, the cylindrical part is arranged on the main part upper cover, and an internal thread hole is arranged on the cylindrical part and used for being threadedly connected with the third screw.
[0027] In some embodiments of the utility model, the anti -disassembly structure further includes a communication module, and the communication module is electrically connected with the anti -disassembly circuit board.
[0028] According to the utility model provides a kind of weighing instrument structure, including anti -disassembly structure, adopt a kind of the structure of anti -disassembly structure of weighing instrument. BRIEF DESCRIPTION OF DRAWINGS
[0029] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.
[0030] Wherein:
[0031] Figure 1 It is the structure schematic view of the utility model weighing instrument;
[0032] Figure 2 It is the explosion schematic view of the utility model weighing instrument;
[0033] Figure 3 It is the section schematic view of the utility model weighing instrument;
[0034] Figure 4 It is the local structure schematic view of the utility model main part upper cover;
[0035] Figure 5 It is the structure schematic view of the utility model main part upper cover;
[0036] Figure 6 It is the local enlarged view of the utility model Figure 5 ;
[0037] Figure 7 It is the structure schematic view of the utility model main part front cover;
[0038] Figure 8 It is the structure schematic view of the utility model control panel;
[0039] Figure 9 It is the structure schematic view of the utility model anti -disassembly device;
[0040] Figure 10It is the structure schematic view of the sealing gasket.
[0041] Label explanation:
[0042] 10, main body upper cover; 11, first installation groove; 12, placing groove; 13, containing groove; 14, first channel; 15, second channel; 16, cylindrical part; 20, bottom plate; 21, first step; 30, main body front cover; 31, second step; 40, control panel; 41, first circuit board; 42, display screen; 43, operation button; 50, anti-disassembly device; 51, anti-disassembly circuit board; 52, anti-disassembly switch; 60, protective layer; 70, sealing gasket; 71, horizontal part; 72, protruding part; 80, sealing cover. DETAILED DESCRIPTION
[0043] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear, explicit, the following will be combined with the drawings and examples, and the utility model will be further described in detail. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model. Example 1
[0044] Please refer to Figures 1 to 10 It is an anti-disassembly structure of a weighing apparatus as an embodiment 1 of the utility model, comprising: main body upper cover 10, bottom plate 20, main body front cover 30, control panel 40, anti-disassembly device 50, first installation groove 11 is arranged on the main body upper cover 10, the main body upper cover 10 is hollow, and the bottom is provided with an opening; the bottom plate 20 is arranged at the opening below the main body upper cover 10; the main body front cover 30 is arranged at the opening of the first installation groove 11; the control panel 40 is arranged inside the main body front cover 30 and is located in the first installation groove 11; the anti-disassembly device 50 is arranged in the first installation groove 11; the anti-disassembly device 50 comprises anti-disassembly circuit board 51 and anti-disassembly switch 52 arranged on the anti-disassembly circuit board 51, the first step 21 is arranged on the bottom plate 20 and is used to abut against the anti-disassembly switch 52, the second step 31 is arranged inside the main body front cover 30 and is used to abut against the anti-disassembly circuit board 51, and the anti-disassembly circuit board 51 is electrically connected with the control panel 40. After the anti-disassembly device 50 of the utility model is installed in place, the anti-disassembly switch 52 is in a normally closed state, when someone removes from the bottom plate 20 or the main body front cover 30, the anti-disassembly switch 52 resets, that is, the anti-disassembly switch is in an open circuit state, the anti-disassembly circuit board 51 recognizes and plays a locking circuit board, and it mainly achieves the effect of anti-disassembly by locking the circuit board.
[0045] Specifically, please refer to Figure 2 , Figure 8The control panel 40 comprises a first circuit board 41, a display screen 42 and a plurality of operation buttons 43 arranged on the first circuit board 41, the display screen 42 and the plurality of operation buttons 43 are electrically connected with the first circuit board 41, and the anti-disassembly circuit board 51 is also electrically connected with the first circuit board 41. The surface of the main body front cover 30 is further covered with a protective layer 60, the control panel 40 is protected by the protective layer 60, and the waterproof effect can be achieved. Specifically, the main body upper cover 10 is provided with a placing groove 12 at the first mounting groove 11, and the protective layer 60 is embedded in the placing groove 12.
[0046] In order to prevent the weighing apparatus from being disassembled in the case of power failure, the anti-disassembly device 50 further comprises a battery, the battery is electrically connected with the anti-disassembly circuit board 51, the anti-disassembly switch 52 is electrically connected with the anti-disassembly circuit board 51, each component is powered by the battery, and the anti-disassembly effect is more effective; specifically, the main body upper cover 10 is further provided with a containing groove 13 at the upper end face, the battery is arranged in the containing groove 13, and the battery is convenient to replace; the containing groove 13 and the first mounting groove are provided with a first channel 14, and a waterproof head is arranged at the first channel 14. The wires pass through the waterproof head and are electrically connected with the anti-disassembly circuit board 51 and the battery at both ends, and a sealing cover 80 is arranged at the opening of the containing groove 13 to achieve the waterproof effect.
[0047] Specifically, please refer to Figure 2 , Figures 4-6, the first mounting groove 11 bottom is provided with a second passage 15 for preventing the switch 52 from passing through, and the preventing switch 52 is arranged towards the bottom plate 20. The anti-disassembly structure further comprises a communication module electrically connected with the anti-disassembly circuit board 51, and the communication module can adopt an Internet card / WIFI and the like for sending and receiving information. The preventing switch 52 can adopt a micro switch, an optical coupler and the like, when the user disassembles the main body upper cover 10, the travel switch is released, the chip on the anti-disassembly circuit board 51 detects that the switch is open, the first circuit board 41 is locked, the log or abnormal event is sent to the cloud server through the communication module, the server receives the abnormality and records it, and the cloud server can control the locking and unlocking of the first circuit board 41; preferably, the switch preferably uses a travel switch, which has a large stroke and can prevent the scale from being deformed due to the pressing of a heavy object on the scale disc for a moment, thereby affecting the release of the switch; the battery of the utility model can use a button cell, and the button cell can cooperate with the chip TAMPER function to ensure that the chip TAMPER function can ensure low-power operation even in a power-off state; or a lithium ion battery is used for power supply, and a microcontroller with low-power interrupt management is used. When the bottom plate 20 or the main body front cover 30 is abnormally disassembled, the switch circuit generates a trigger signal, the microcontroller detects the level jump through the GPIO interface in real time, and immediately triggers the interrupt service program to record the abnormal event to the nonvolatile memory and lock the first circuit board 41. The whole anti-disassembly device 50 adopts a dynamic power consumption management strategy, maintains a μA level sleep current in the standby state, ensures long-term endurance, and guarantees the real-time responsiveness of the safety protection function.
[0048] The control panel 40 is locked on the main body front cover 30 by a plurality of first screws, and the main body front cover 30 is locked on the main body upper cover 10 by a plurality of second screws. The main body front cover 30 is further provided with a avoiding position for avoiding the display and the operation key 43.
[0049] For details, please refer to Figure 2 、 Figure 10 The first mounting groove 11 bottom is further provided with a sealing gasket 70 corresponding to the second passage 15, and the sealing gasket 70 comprises a horizontal part 71 and a protruding part 72 arranged on the horizontal part 71, and the protruding part 72 is hollow inside for covering the preventing switch 52; the anti-disassembly circuit board 51 is locked in the first mounting groove 11 bottom by a third screw, one of the third screws directly passes through the anti-disassembly circuit board 51 and is locked on the main body upper cover 10, and the other third screw passes through the first step 21 and the anti-disassembly circuit board 51 and is locked on the main body upper cover 10. Specifically, the main body upper cover 10 is provided with a cylindrical part 16, and the cylindrical part 16 is provided with an internal thread hole for thread connection with the third screw.
[0050] The anti-disassembly switches 52 of the embodiment can be provided in plurality, for example, two are provided in the embodiment, and multi-path anti-disassembly can be realized, and the switches are connected in series on the circuit, the logic of the keys is "and", the structure uses studs or screws or the first step 21 to support all the switches, so that the switch is closed, the microcontroller on the first circuit board 41 detects that the level always remains low, when one of the anti-disassembly switches 52 is disconnected, the keys connected in series are also disconnected, the microcontroller detects the level change, and triggers locking (the switches can be connected in series by using terminal connectors, which can enable the electronic scale to be modularized, and each module can be locked).
[0051] The bottom plate 20 in the embodiment is locked by using lead seal screws and special-shaped screws, and needs special tools to disassemble, so that the difficulty of illegal disassembly is increased, and the first circuit board 41 is filled with epoxy resin, and cannot be restored after being damaged, so that the anti-disassembly effect is further improved. Embodiment 2
[0052] Please refer to Figures 1 to 10 It is a kind of weighing apparatus structure of embodiment 2 of the utility model, including anti-disassembly structure, using the anti-disassembly structure of one kind of weighing apparatus in embodiment 1.
[0053] In summary, after the anti-disassembly device of the utility model is installed in place, the anti-disassembly switch is in a normally closed state, when someone disassembles from the bottom plate or the main body front cover, the anti-disassembly switch resets, the anti-disassembly circuit board identifies and plays a locking circuit board, mainly by locking the circuit board to achieve the effect of anti-disassembly;Specifically, it has the following advantages:
[0054] First, using this scheme can significantly improve the safety, reliability and compliance of the electronic scale;
[0055] Second, after the anti-disassembly device is triggered, the cloud records logs, which can prove whether the device is illegally disassembled and modified, and avoid unnecessary liability of the manufacturer;
[0056] Third, the locking structure and the anti-disassembly device double protect, the locking structure locks the shell by anti-disassembly screws, lead seal screws and the like, and directly blocks the contact;When the circuit detects an abnormality, data erasure is triggered, and logs are sent;
[0057] Fourth, self-healing anti-disassembly, authorized personnel are allowed to remotely recover after triggering protection, reducing the cost of returning to the factory.
[0058] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various non-essential improvements are made by using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.
Claims
1. A tamper-evident structure for a weighing instrument, characterized in that The application relates to a tamper-proof structure of a weighing apparatus. The tamper-proof structure comprises a main body upper cover, a bottom plate, a main body front cover, a control panel and a tamper-proof device. The main body upper cover is internally hollow and is provided with a first mounting groove and an opening at the bottom. The bottom plate is arranged at the opening of the main body upper cover. The main body front cover is arranged at the opening of the first mounting groove. The control panel is arranged on the inner side of the main body front cover and is located in the first mounting groove. The tamper-proof device is arranged in the first mounting groove.
2. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The tamper-proof device comprises a tamper-proof circuit board and a tamper-proof switch arranged on the tamper-proof circuit board.
3. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The bottom plate is provided with a first step for abutting against the tamper-proof switch.
4. A tamper-proof structure of a weighing apparatus according to claim 3, wherein The inner side of the main body front cover is provided with a second step for abutting against the tamper-proof circuit board.
5. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The control panel comprises a first circuit board, a display screen and a plurality of operation buttons arranged on the first circuit board.
6. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The display screen and the plurality of operation buttons are electrically connected with the first circuit board.
7. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The tamper-proof device further comprises a battery which is electrically connected with the tamper-proof circuit board.
8. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The tamper-proof switch is electrically connected with the tamper-proof circuit board.
9. A tamper-proof structure of a weighing apparatus according to claim 1, wherein The main body upper cover is further provided with a containing groove at the upper end surface.
10. A weighing installation, characterized in that The battery is arranged in the containing groove. A first channel is arranged between the containing groove and the first mounting groove. A waterproof head is arranged at the first channel. The first mounting groove is provided with a second channel at the bottom for the tamper-proof switch to pass through. The tamper-proof switch is arranged towards the bottom plate. The first mounting groove is further provided with a sealing gasket at the bottom corresponding to the second channel. The sealing gasket comprises a horizontal part and a protruding part arranged on the horizontal part. The protruding part is internally hollow for covering the tamper-proof switch. The control panel is locked on the main body front cover through a plurality of first screws. The main body front cover is locked on the main body upper cover through a plurality of second screws. The tamper-proof circuit board is locked in the bottom of the first mounting groove through third screws. One of the third screws directly passes through the tamper-proof circuit board and is locked on the main body upper cover. The other third screw passes through the first step and the tamper-proof circuit board and is locked on the main body upper cover. The tamper-proof structure further comprises a communication module which is electrically connected with the tamper-proof circuit board. The tamper-proof structure of the weighing apparatus is adopted. The tamper-proof structure of the weighing apparatus is adopted.