Waterproof and insect-proof electronic scale

Abstract

The utility model discloses a waterproof insect-proof electronic scale, which comprises an electronic scale shell, a circuit mainboard, a bearing frame and a pressure sensor, the top of the electronic scale shell is provided with a bearing frame assembly hole, the bottom of the bearing frame passes through the bearing frame assembly hole to abut against the pressure sensor, and the electronic scale shell comprises an upper shell, a lower shell and an isolation cylinder; the bearing frame assembling hole is formed in the top end of the upper shell; the lower shell is arranged below the upper shell and is detachably connected with the upper shell, and a hollow area is formed between the lower shell and the upper shell; the isolation cylinder is arranged in the hollow area, the bottom end of the isolation cylinder downwards penetrates through the lower shell, and the top end of the isolation cylinder abuts against the bottom end face of the upper shell, so that the hollow area is divided into a cavity in the isolation cylinder and an electronic board assembly cavity outside the isolation cylinder; the pressure sensor is installed in the isolation cylinder, the circuit mainboard is installed in the electronic board assembly cavity, and the circuit mainboard and the electronic board assembly cavity are connected through a signal line. According to the waterproof and insect-proof electronic scale of the utility model, the isolation cylinder is used to isolate and protect the circuit mainboard from the outside.

Description

Technical Field

[0001] This utility model relates to the field of electronic scale technology, and more specifically to a waterproof and insect-proof electronic scale. Background Technology

[0002] An electronic scale is a tool for measuring the weight of objects and is commonly used in industrial production and daily life.

[0003] In related technologies, electronic scales mainly include a scale body, a weighing pan, a keypad, and a display screen. The scale body includes a scale body shell, a load-bearing frame, a pressure sensor, and a circuit board. The pressure sensor and circuit board are installed inside the scale body shell. The display screen and keypad are installed on the front side of the scale body shell. The top of the scale body shell has a through hole communicating with its inner cavity. The support feet at the bottom of the load-bearing frame pass through the through hole and directly contact the pressure sensor. However, in order to accommodate the insertion requirements of different support feet at the bottom of the load-bearing frame, the diameter of the through hole is often much larger than the diameter of the support feet. Furthermore, because electronic scales are used in environments such as vegetable markets, where the environment is humid and has many insects, moisture and insects can easily enter the scale body shell through the through hole, damaging the circuit board and affecting the normal use of the electronic scale.

[0004] Therefore, how to provide a reasonably designed electronic scale that prevents moisture and insects from entering the scale body through the through-hole on the top of the scale body and damaging the circuit board is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a waterproof and insect-proof electronic scale, which solves the technical problem that water vapor and mosquitoes can easily enter the scale body through the through hole at the top of the scale body and damage the circuit board.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A waterproof and insect-proof electronic scale includes an electronic scale housing, a circuit board, a load-bearing frame, and a pressure sensor assembled inside the electronic scale housing. The top of the electronic scale housing has a load-bearing frame mounting hole, and the bottom of the load-bearing frame passes through the load-bearing frame mounting hole and abuts against the pressure sensor. The electronic scale housing includes an upper housing, a lower housing, and an isolation cylinder. The load-bearing frame mounting hole is located at the top of the upper housing. The lower housing is disposed below the upper housing and detachably connected to it, forming a hollow area between the lower housing and the upper housing. The isolation cylinder is disposed within the hollow area, with its bottom end vertically penetrating the lower housing and its top end corresponding to the load-bearing frame mounting hole and abutting against the bottom end face of the upper housing, thereby dividing the hollow area into a cavity inside the isolation cylinder and an electronic board assembly cavity outside the isolation cylinder. The pressure sensor is installed inside the isolation cylinder, and the circuit board is installed inside the electronic board assembly cavity, and the two are connected by a signal line.

[0008] Preferably, a waterproof and insect-proof electronic scale further includes a partition plate, which is horizontally arranged inside the isolation cylinder and its peripheral end is fixedly connected to the inner wall of the isolation cylinder to divide the cavity inside the isolation cylinder into a sensor assembly cavity and a battery assembly cavity arranged vertically. The pressure sensor is installed in the sensor assembly cavity, and a battery is installed in the battery assembly cavity. The circuit board and the pressure sensor are both electrically connected to the battery.

[0009] Preferably, the load-bearing frame includes a weighing pan frame and a support leg. The weighing pan frame is arranged above the upper housing, and the support leg is fixed to the bottom of the weighing pan frame and passes through the mounting hole of the load-bearing frame to abut against the pressure detection end at the top of the pressure sensor.

[0010] Preferably, a waterproof and insect-proof electronic scale further includes a sealing bushing, which is arranged inside the mounting hole of the load-bearing frame. Its outer ring wall is sealed and fixed to the hole wall of the mounting hole of the load-bearing frame, and its inner ring wall is tightly fitted and slidably connected to the support leg.

[0011] Preferably, the isolation cylinder is formed by multiple vertical plates and welded together. The multiple vertical plates are arranged in the hollow area and penetrate the lower shell vertically downwards at their bottom ends, and abut against the bottom end face of the upper shell around the mounting hole of the load-bearing frame. The peripheral end of the partition plate is fixed to the inner side plate surface of the multiple vertical plates.

[0012] Preferably, both the partition plate and any of the upright plates are provided with wire-passing holes for threading wires.

[0013] Preferably, a sealing sleeve is provided between the threading hole and the wire.

[0014] Preferably, a waterproof and insect-proof electronic scale further includes a battery sealing plate, which is detachably connected to the battery assembly cavity to encapsulate the battery.

[0015] Preferably, a display screen mounting hole is provided on the front side panel of the upper housing, and a display screen electrically connected to the circuit motherboard is mounted in the display screen mounting hole.

[0016] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a waterproof and insect-proof electronic scale, the main effects and advantages of which are:

[0017] 1. The circuit board is isolated from the outside world by using an isolation cylinder. When moisture and insects from the outside enter the electronic scale through the mounting holes of the load-bearing frame, they can only stay in the inner cavity of the isolation cylinder and will not enter the electronic board mounting cavity to damage the circuit board.

[0018] 2. The sealing bushing can prevent mosquitoes from entering the sensor assembly cavity through the mounting holes of the load-bearing frame and damaging the pressure sensor, and can also reduce the entry of moisture and extend the service life of the pressure sensor.

[0019] 3. Use separators and insulating cylinders to separate the battery from the pressure sensor and circuit board to prevent battery acid leakage from causing contamination and corrosion to the pressure sensor and circuit board. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is another schematic diagram of the overall structure provided by this utility model;

[0023] Figure 3 Top view of the overall structure provided by this utility model;

[0024] Figure 4 for Figure 3 Cross-sectional view along the AA direction;

[0025] Figure 5 This is an exploded view of the overall structure of this utility model;

[0026] Figure 6This is a schematic diagram of the overall structure of this utility model after an explosion from another angle;

[0027] Figure 7 This is a schematic diagram showing the connection between the isolation cylinder and the partition plate in this utility model.

[0028] Among them: 100-circuit main board, 200-support frame, 300-pressure sensor, 400-battery, 201-support foot, 1-upper housing, 2-lower housing, 3-isolation cylinder, 4-electronic board assembly cavity, 5-partition plate, 6-sensor assembly cavity, 7-battery assembly cavity, 8-sealing bushing, 9-battery sealing plate, 11-display screen assembly hole, 31-vertical plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] See appendix Figure 1 To be continued Figure 7This utility model discloses a waterproof and insect-proof electronic scale, including an electronic scale housing, a circuit board 100, a load-bearing frame 200, and a pressure sensor 300 assembled inside the electronic scale housing. The top of the electronic scale housing has a load-bearing frame mounting hole, and the bottom of the load-bearing frame 200 passes through the load-bearing frame mounting hole and abuts against the pressure sensor 300. The electronic scale housing includes an upper housing 1, a lower housing 2, and an isolation cylinder 3. The load-bearing frame mounting hole is located at the top of the upper housing 1. The lower housing 2 is arranged below the upper housing 1 and is detachably connected to it, forming a hollow area between the lower housing 2 and the upper housing 1. The isolation cylinder 3 is arranged in the hollow area, with its bottom end vertically penetrating the lower housing 2 and its top end corresponding to the load-bearing frame mounting hole and abutting against the bottom end face of the upper housing 1, thereby dividing the hollow area into a cavity inside the isolation cylinder 3 and an electronic board mounting cavity 4 outside the isolation cylinder 3. The pressure sensor 300 is installed inside the isolation cylinder 3, and the circuit board 100 is installed inside the electronic board mounting cavity 4, and the two are connected by a signal line.

[0033] When this electronic scale is used in the vegetable market, the main circuit board 100 is installed in the electronic board assembly cavity 4. Due to the blocking effect of the isolation cylinder 3, water vapor and mosquitoes can only be confined to the inner cavity of the isolation cylinder 3 after entering the electronic scale through the load-bearing frame assembly hole, and will not enter the electronic board assembly cavity 4 to damage the main circuit board 100.

[0034] In some specific examples, a waterproof and insect-proof electronic scale also includes a partition plate 5, which is horizontally arranged inside the isolation cylinder 3 and its peripheral end is fixedly connected to the inner wall of the isolation cylinder 3 to divide the cavity inside the isolation cylinder 3 into a sensor assembly cavity 6 and a battery assembly cavity 7 arranged vertically. The pressure sensor 300 is installed in the sensor assembly cavity 6, and the battery 400 is installed in the battery assembly cavity 7. The circuit board 100 and the pressure sensor 300 are both electrically connected to the battery 400.

[0035] The pressure sensor 300 and the battery 400 are separated by the partition plate 5 in the isolation cylinder 3 and arranged vertically. Acid leakage from the battery 400 will not cause contamination or corrosion to the circuit board 100 in the electronic board assembly cavity 4 and the pressure sensor 300 in the sensor assembly cavity 6.

[0036] In some specific examples, the load-bearing frame 200 includes a weighing pan frame and a support foot 201. The weighing pan frame is arranged above the upper housing 1, and the support foot 201 is fixed to the bottom of the weighing pan frame and passes through the load-bearing frame mounting hole to abut against the pressure detection end at the top of the pressure sensor 300.

[0037] Furthermore, a waterproof and insect-proof electronic scale also includes a sealing bushing 8, which is arranged inside the mounting hole of the load-bearing frame. Its outer ring wall is sealed and fixed to the hole wall of the mounting hole of the load-bearing frame, and its inner ring wall is tightly fitted and slidably connected to the support foot 201.

[0038] The support feet 201 of the load-bearing frame 200 are inserted into the inner ring of the sealing bushing 8 located in the load-bearing frame assembly hole, which can prevent mosquitoes from entering the sensor assembly cavity 6 and damaging the pressure sensor 300. In addition, the design of the sealing bushing 8 can reduce the amount of water vapor entering the sensor assembly cavity 6 through the load-bearing frame assembly hole, thus protecting the pressure sensor 300.

[0039] In some specific examples, the isolation cylinder 3 is formed by multiple vertical plates 31 and welded and fixed. The multiple vertical plates 31 are arranged in the hollow area and the bottom ends penetrate vertically through the lower shell 2, while the top ends abut against the bottom end face of the upper shell 1 around the mounting hole of the load-bearing frame. The peripheral end of the partition plate 5 is fixed to the inner side plate surface of the multiple vertical plates 31.

[0040] Specifically, both the partition plate 5 and any of the upright plates 31 are provided with wire-passing holes for threading wires, and a sealing sleeve is provided between the wire-passing hole and the wire.

[0041] Specifically, a waterproof and insect-proof electronic scale also includes a battery sealing plate 9, which is detachably connected to the battery assembly cavity 7 to encapsulate the battery 400.

[0042] Specifically, a display screen mounting hole 11 is provided on the front side panel of the upper housing 1, and a display screen that is electrically connected to the circuit board 100 is mounted in the display screen mounting hole 11.

[0043] This utility model discloses a waterproof and insect-proof electronic scale, which uses a three-chamber structure to separate the circuit board 100, pressure sensor 300, and battery 400. Specifically, an isolation cylinder 3 divides the hollow area between the upper shell 1 and the lower shell 2 into an inner cavity connected to the outside and an electronic board assembly cavity 4 isolated from the outside. External insects and moisture will not enter the electronic board assembly cavity 4 through the load-bearing frame assembly hole at the top of the upper shell 1, thus preventing damage to the circuit board 100. A partition plate 5 further divides the inner cavity of the isolation cylinder 3 into a sensor assembly cavity 6 and a battery assembly cavity 7, arranged vertically. If the battery 400 leaks acid in the battery assembly cavity 7, it will not flow into the electronic board assembly cavity 4 and the sensor assembly cavity 6, causing contamination and corrosion to the circuit board 100 and the pressure sensor 300. A sealing bushing 8 arranged inside the load-bearing frame assembly hole prevents external insects from entering the sensor assembly cavity 6 and damaging the pressure sensor 300. Furthermore, the pressure sensor 300 is more stably connected to the load-bearing frame 200 after being raised by the partition plate 5.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waterproof and insect-proof electronic scale, comprising an electronic scale housing, a circuit board (100) assembled within the electronic scale housing, a load-bearing frame (200), and a pressure sensor (300), wherein the top of the electronic scale housing has a load-bearing frame mounting hole, and the bottom of the load-bearing frame (200) passes through the load-bearing frame mounting hole and abuts against the pressure sensor (300), characterized in that, The electronic scale housing includes: The upper housing (1) has the load-bearing frame assembly hole located at the top of the upper housing (1); The lower housing (2) is arranged below the upper housing (1) and detachably connected thereto, and a hollow area is formed between the lower housing (2) and the upper housing (1); An isolation cylinder (3) is arranged in the hollow area. The bottom end of the isolation cylinder (3) penetrates the lower shell (2) vertically downward and the top end of the upper shell (1) abuts against the bottom end face of the load-bearing frame assembly hole, so as to divide the hollow area into a cavity inside the isolation cylinder (3) and an electronic board assembly cavity (4) outside the isolation cylinder (3). The pressure sensor (300) is installed inside the isolation cylinder (3), and the circuit board (100) is installed inside the electronic board assembly cavity (4), and the two are connected by a signal line.

2. The waterproof and insect-proof electronic scale according to claim 1, characterized in that, It also includes a partition plate (5), which is horizontally arranged inside the isolation cylinder (3) and its peripheral end is fixedly connected to the inner wall of the isolation cylinder (3) to divide the cavity inside the isolation cylinder (3) into a sensor assembly cavity (6) and a battery assembly cavity (7) arranged vertically. The pressure sensor (300) is installed in the sensor assembly cavity (6) and the battery (400) is installed in the battery assembly cavity (7). The circuit board (100) and the pressure sensor (300) are both electrically connected to the battery (400).

3. A waterproof and insect-proof electronic scale according to claim 2, characterized in that, The load-bearing frame (200) includes a weighing pan frame and a support foot (201). The weighing pan frame is arranged above the upper housing (1). The support foot (201) is fixed to the bottom of the weighing pan frame and passes through the mounting hole of the load-bearing frame to abut against the pressure detection end at the top of the pressure sensor (300).

4. A waterproof and insect-proof electronic scale according to claim 3, characterized in that, It also includes a sealing bushing (8), which is arranged in the mounting hole of the load-bearing frame. Its outer ring wall is sealed and fixed to the hole wall of the mounting hole of the load-bearing frame, and its inner ring wall is tightly attached to and slidably connected to the support foot (201).

5. A waterproof and insect-proof electronic scale according to claim 2, characterized in that, The isolation cylinder (3) is formed by multiple vertical plates (31) and welded and fixed. The multiple vertical plates (31) are arranged in the hollow area and their bottom ends penetrate vertically through the lower shell (2) downwards. Their top ends abut against the bottom end face of the upper shell (1) around the mounting hole of the load-bearing frame. The peripheral end of the partition plate (5) is fixed on the inner side plate surface of the multiple vertical plates (31).

6. A waterproof and insect-proof electronic scale according to claim 5, characterized in that, Both the partition plate (5) and any of the upright plates (31) are provided with wire-passing holes for threading wires.

7. A waterproof and insect-proof electronic scale according to claim 6, characterized in that, A sealing sleeve is provided between the threading hole and the wire.

8. A waterproof and insect-proof electronic scale according to any one of claims 2-7, characterized in that, It also includes a battery sealing plate (9), which is detachably connected to the battery assembly cavity (7) to encapsulate the battery (400).

9. A waterproof and insect-proof electronic scale according to any one of claims 1-7, characterized in that, The front side panel of the upper housing (1) is provided with a display screen mounting hole (11), and a display screen that is electrically connected to the circuit board (100) is installed in the display screen mounting hole (11).

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