A weighing assembly and coffee machine

Abstract

The utility model relates to the technical field of circuit board, propose a kind of weighing assembly and coffee machine, a kind of weighing assembly, comprising: weight sensor, the weight sensor is used to detect the weight of the object to be weighed;Circuit board, the circuit board is electrically connected with weight sensor by wire;Waterproof and moisture-proof structure, the waterproof and moisture-proof structure includes the board protection component for wrapping encapsulation circuit board and / or the gluing protection component for weight sensor. By setting waterproof and moisture-proof structure, effectively solve the problem of moisture-proof performance deficiency caused by screw fixing mode of traditional electronic scale. Waterproof and moisture-proof structure includes board protection component and / or gluing protection component, wherein board protection component can be overall encapsulation to circuit board, prevent water vapor intrusion;Gluing protection component is sealed protection to the key connecting part of weight sensor, board protection component can avoid steam, water mist erosion electronic components on circuit board, to reduce short-circuit, burn out and other fault risks.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit boards, specifically to a weighing assembly and a coffee machine. Background Technology

[0002] The core control circuit board of an electronic scale acts as the "brain" of the entire weighing system, responsible for processing weight sensor signals, performing data calculations, controlling display output, and implementing calibration functions. However, the screw-fixed circuit board mounting method commonly used in the industry has a significant drawback: it fails to provide adequate moisture protection and lacks sufficient safety. During use, steam or water vapor can adhere to the electronic components, causing short circuits and burnout of the circuit board. This renders the scale unusable for consumers, shortens the lifespan of the weighing components, and ultimately leads to numerous consumer complaints and after-sales issues.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] This invention proposes a weighing assembly and coffee machine. By incorporating a waterproof and moisture-proof structure, it completely encapsulates the circuit board, its electrical components, and the wire connections between the circuit board and the wires, thus completely solving the problem of poor moisture protection in traditional screw-fixed installation methods. In traditional installation methods, the circuit board is directly exposed or simply fixed, allowing moisture to easily penetrate through gaps. In this solution, the waterproof and moisture-proof structure provides comprehensive protection, ensuring that the circuit board, electrical components, and wire connections are all protected, effectively preventing steam, water vapor, and other moisture from adhering to the circuit board and electrical components.

[0005] A weighing assembly designed for this purpose includes: A weight sensor, used to detect the weight of the object to be weighed; A circuit board, which is electrically connected to a weight sensor via wires; A waterproof and moisture-proof structure, comprising a board protection assembly for encapsulating a circuit board and / or an adhesive protection assembly for a weight sensor.

[0006] The board protection assembly includes a hollow heat shrink tubing, which encapsulates the entire circuit board and the wire connection points between the wires and the circuit board.

[0007] The plate protection assembly includes a heat-sealing layer for sealing the side opening of the heat shrink tubing, and the wire passes through the heat-sealing layer and extends out of the heat shrink tubing; The heat-sealing layers on both sides of the heat-shrink tubing form a relatively sealed moisture shielding zone to prevent moisture from seeping in. The circuit board, electrical components installed on the circuit board, and wire fixing connections are all located within the moisture shielding zone.

[0008] The heat-sealing layer seals the gap between the heat-shrink tubing opening and the wire in a hot-melt state, thereby forming a hot-melt adhesive seal at the heat-shrink tubing opening.

[0009] The heat shrink tubing is longer than the overall length of the circuit board. The hot melt adhesive seal between the heat shrink tubing and the wire is far from the circuit board, and the heat seal layer does not contact the side of the circuit board.

[0010] The heat shrink tubing is a flexible insulating material.

[0011] The first end of the circuit board is provided with a first wire that is electrically connected to the weight sensor. The adhesive protective assembly includes a first adhesive protective layer disposed between the weight sensor and the first wire. The first end of the first wire is fixed to the first end of the circuit board by welding. The weight sensor is provided with a first terminal that is electrically connected to the second end of the first wire. The second end of the first wire and the first terminal are wrapped with adhesive to form a first adhesive protective layer for wrapping and encapsulating the second end of the first wire and the first terminal.

[0012] The weight sensor has strain gauges at both the upper and lower parts. The adhesive protective assembly includes a second adhesive protective layer disposed on the strain gauges of the weight sensor. The upper and / or lower strain gauges are wrapped with adhesive to form a second adhesive protective layer for wrapping and encapsulating the upper and / or lower strain gauges.

[0013] The second end of the circuit board is provided with a second wire that is electrically connected to the second terminal block, and the second wire is fixed to the second end of the circuit board by welding.

[0014] A coffee machine includes a body on which the aforementioned weighing assembly is provided.

[0015] The beneficial technical effects of this utility model are as follows: By incorporating a waterproof and moisture-proof structure, the circuit board, its electrical components, and the connections between the circuit board and the wires are completely encapsulated, thoroughly solving the problem of poor moisture protection in traditional screw-fixed installation methods. In traditional installation methods, the circuit board is directly exposed or simply fixed, allowing moisture to easily penetrate through gaps. The waterproof and moisture-proof structure provides comprehensive protection, keeping the circuit board, electrical components, and wire connections under protection, effectively preventing steam, water mist, and other moisture from adhering to the circuit board and electrical components.

[0016] By incorporating a waterproof and moisture-proof structure, not only are short circuits and burnouts of electronic components due to moisture prevented, ensuring normal use by consumers, but the lifespan of the weighing components is also significantly extended, reducing consumer complaints and after-sales issues caused by malfunctions, and improving product reliability and user satisfaction. Simultaneously, the encapsulation of the wire connection points solves the problem of these areas being vulnerable to moisture intrusion, ensuring the stability of the circuit connections and further enhancing the overall moisture-proof performance of the structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the planar structure of a circuit board assembly according to an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of a circuit board assembly according to an embodiment of the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a schematic diagram of a circuit board without heat shrink tubing in one embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the circuit board after heat shrink tubing is installed in an embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of a heat-shrinkable tube with a heat-sealing layer according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of a weight sensor connected to a first wire according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the lower structure of a weight sensor according to an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] See Figures 1-8 A weighing assembly, comprising: Weight sensor 5, which is used to detect the weight of the object to be weighed; Circuit board 1, which is electrically connected to weight sensor 5 via wire 2; The waterproof and moisture-proof structure 3 includes a board protection component for wrapping the encapsulated circuit board 1 and / or an adhesive protection component for the weight sensor 5.

[0027] By incorporating a waterproof and moisture-proof structure 3, the insufficient moisture-proof performance of traditional electronic scales due to their screw-fixing method is effectively solved. The waterproof and moisture-proof structure 3 includes a plate protection component and / or an adhesive-coated protection component. The plate protection component completely encapsulates the circuit board 1 to prevent moisture intrusion; the adhesive-coated protection component seals and protects the critical connection points of the weight sensor 5. The plate protection component prevents steam and water mist from corroding the electronic components on the circuit board 1, thereby reducing the risk of short circuits, burnout, and other malfunctions. Furthermore, this design extends the service life of the weighing components, reduces consumer complaints and after-sales issues caused by moisture on the circuit board 1, and improves the overall product quality.

[0028] The board protection assembly includes a hollow heat shrink tubing 301, which encapsulates the entire circuit board 1 and the wire connection 4 between the wire 2 and the circuit board 1.

[0029] The board protection assembly uses hollow heat shrink tubing 301, which can completely wrap the entire circuit board 1 and the wire connection 4 between the wires 2 and the circuit board 1, forming a physical barrier layer to prevent external moisture from penetrating. The heat shrink tubing 301's wrapping and encapsulation method has a simple structure, ensuring that the encapsulated circuit board 1 still maintains a certain level of mechanical strength and insulation performance. Compared with traditional screw fixing or simple glue application methods, the heat shrink tubing 301 has superior sealing performance and can effectively prevent the electronic components on the circuit board 1 from failing due to moisture.

[0030] The plate protection assembly includes a heat-sealing layer 302, which is used to seal the side opening of the heat shrink tubing 301, and the wire 2 passes through the heat-sealing layer 302 and extends out of the heat shrink tubing 301; The heat-sealing layers 302 on both sides of the heat-shrink tubing 301 form a relatively sealed water vapor shielding area to prevent water vapor from penetrating. The circuit board 1, the electrical components installed on the circuit board 1, and the wire fixing connection 4 are all located within the water vapor shielding area.

[0031] The heat-sealing layer 302 is used to seal the side opening of the heat-shrink tubing 301 while allowing the wire 2 to pass through, thereby forming a relatively sealed moisture-shielding area inside the heat-shrink tubing 301. This structure effectively prevents external moisture from seeping in, ensuring that the circuit board 1, electrical components, and wire fixing connection 4 are all in a dry environment. The combination of the heat-sealing layer 302 and the heat-shrink tubing 301 not only enhances the sealing performance but also prevents seal failure caused by the movement of the wire 2.

[0032] The heat-sealing layer 302 seals the gap between the opening of the heat-shrink tube 301 and the wire 2 in a hot-melt state, so as to form a hot melt adhesive seal at the opening of the heat-shrink tube 301.

[0033] When in a hot-melt state, the heat-sealing layer 302 can completely fill the tiny gap between the opening of the heat-shrink tubing 301 and the wire 2, forming a hot-melt adhesive seal to prevent moisture from entering through the gap between the wire 2 and the heat-shrink tubing 301.

[0034] The length of the heat shrink tubing 301 is greater than the overall length of the circuit board 1. The hot melt adhesive seal between the heat shrink tubing 301 and the wire 2 is far away from the circuit board 1, and the heat sealing layer 302 does not contact the side of the circuit board 1.

[0035] The length of the heat shrink tubing 301 is greater than the overall length of the circuit board 1, and the hot melt adhesive seal is far away from the circuit board 1, ensuring that the heat seal layer 302 does not directly contact the side of the circuit board 1, thus avoiding damage to the components on the circuit board 1 caused by high temperatures during the hot melt process. This design improves process safety while ensuring a good sealing effect.

[0036] The heat shrink tubing 301 is a flexible insulating material.

[0037] The first end of the circuit board 1 is provided with a first wire 201 that is electrically connected to the weight sensor 5. The adhesive protective assembly includes a first adhesive protective layer 6 disposed between the weight sensor 5 and the first wire 201. The first end of the first wire 201 is fixed to the first end of the circuit board 1 by welding. The weight sensor 5 is provided with a first terminal 501 that is electrically connected to the second end of the first wire 201. The second end of the first wire 201 and the first terminal 501 are wrapped with adhesive to form a first adhesive protective layer 6 for wrapping and encapsulating the second end of the first wire 201 and the first terminal 501.

[0038] The first adhesive protective layer 6 forms a reliable sealing structure by wrapping the second end of the first wire 201 and the first terminal 501 with adhesive, preventing moisture from entering from the connection between the weight sensor 5 and the wire 2.

[0039] The weight sensor 5 is provided with strain gauges 502 in both the upper part 503 and the lower part 504. The adhesive protective assembly includes a second adhesive protective layer disposed on the strain gauges 502 of the weight sensor 5. The strain gauges 502 in the upper part 503 and / or the lower part 504 are wrapped with adhesive to form a second adhesive protective layer for wrapping and encapsulating the strain gauges 502 in the upper part 503 and / or the lower part 504.

[0040] The second adhesive protective layer wraps the strain gauge 502 of the upper part 503 and / or lower part 504 of the weight sensor 5 with adhesive to prevent water vapor, dust and other pollutants from corroding the strain gauge 502, and to ensure that its sensitivity and measurement accuracy are not affected by the environment.

[0041] The second end of the circuit board 1 is provided with a second wire 202 that is electrically connected to the second terminal 7. The second wire 202 is fixed to the second end of the circuit board 1 by welding.

[0042] A coffee machine includes a body on which the aforementioned weighing assembly is provided.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A weighing assembly, characterized in that, include: Weight sensor (5), the weight sensor (5) is used to detect the weight of the object to be weighed; Circuit board (1), which is electrically connected to weight sensor (5) via wire (2); Waterproof and moisture-proof structure (3), the waterproof and moisture-proof structure (3) includes a board protection assembly for wrapping the encapsulated circuit board (1) and / or an adhesive protection assembly for the weight sensor (5).

2. The weighing assembly according to claim 1, characterized in that: The board protection assembly includes a heat shrink tubing (301) with a hollow structure. The entire circuit board (1) and the wire fixing connection (4) between the wire (2) and the circuit board (1) are wrapped and encapsulated by the heat shrink tubing (301).

3. The weighing assembly according to claim 2, characterized in that: The plate protection assembly includes a heat-sealing layer (302) for sealing the side opening of the heat shrink tubing (301), and the wire (2) passes through the heat-sealing layer (302) and extends out of the heat shrink tubing (301); A relatively sealed water vapor shielding area is formed between the heat sealing layer (302) on both sides of the heat shrink tubing (301) and the heat shrink tubing (301) to prevent water vapor from penetrating. The circuit board (1), the electrical components installed on the circuit board (1), and the wire fixing connection (4) are all located within the water vapor shielding area.

4. The weighing assembly according to claim 3, characterized in that: The heat-sealing layer (302) seals the gap between the opening of the heat-shrink tube (301) and the wire (2) in the heat-melt state, so as to form a hot melt adhesive seal at the opening of the heat-shrink tube (301).

5. The weighing assembly according to claim 4, characterized in that: The length of the heat shrink tubing (301) is greater than the overall length of the circuit board (1). The hot melt adhesive seal between the heat shrink tubing (301) and the wire (2) is far away from the circuit board (1), and the heat seal layer (302) does not contact the side of the circuit board (1).

6. The weighing assembly according to claim 2, characterized in that: The heat shrink tubing (301) is a flexible insulating material.

7. The weighing assembly according to claim 1, characterized in that: The circuit board (1) has a first wire (201) that is electrically connected to the weight sensor (5) at its first end. The adhesive protective assembly includes a first adhesive protective layer (6) disposed between the weight sensor (5) and the first wire (201). The first end of the first wire (201) is fixed to the first end of the circuit board (1) by welding. The weight sensor (5) is provided with a first terminal (501) electrically connected to the second end of the first wire (201). The second end of the first wire (201) and the first terminal (501) are wrapped with adhesive to form a first adhesive protective layer (6) for wrapping and encapsulating the second end of the first wire (201) and the first terminal (501).

8. The weighing assembly according to claim 7, characterized in that: The weight sensor (5) is provided with strain gauges (502) on both the upper part (503) and the lower part (504). The adhesive protective assembly includes a second adhesive protective layer disposed on the strain gauges (502) of the weight sensor (5). The strain gauges (502) on the upper part (503) and / or the lower part (504) are wrapped with adhesive to form a second adhesive protective layer for wrapping and encapsulating the strain gauges (502) on the upper part (503) and / or the lower part (504).

9. The weighing assembly according to claim 7, characterized in that: The second end of the circuit board (1) is provided with a second wire (202) that is electrically connected to the second terminal (7). The second wire (202) is fixed to the second end of the circuit board (1) by welding.

10. A coffee machine, comprising a body, characterized in that: The machine body is provided with the weighing assembly as described in any one of claims 1-9.

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