Waterproof and breathable weight scale

Abstract

The utility model discloses a waterproof and breathable weight scale, which comprises a scale body and a scale pan, the scale pan is installed above the scale body, a sealing film is arranged between the scale pan and the upper surface of the scale body, the scale body comprises a lower shell, an upper shell connected to the lower shell, the upper shell and the lower shell form an inner cavity, a sealing ring is arranged between the upper shell and the lower shell, the lower shell is provided with a plurality of through holes distributed along the up-down direction, the upper end of the plurality of through holes is communicated with the inner cavity, a breathable film is arranged at the lower end of the through hole, a cover plate is arranged on the side of the breathable film away from the upper shell, and the cover plate is connected with the lower shell. The utility model has the following advantages: the waterproof and dustproof IP69K is realized, the transient ventilation performance avoids the weighing error caused by the pressure difference between the inside and outside of the scale during the weighing, the problem of internal condensation is avoided, and the service life is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of weighing technology, and in particular to a waterproof and breathable weighing scale. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] Traditional weighing scales used in food processing, chemical, and aquatic product industries often face challenges such as liquid splashes, high-pressure water washing, and high humidity environments. While existing products employ partial waterproofing designs, such as IP65 ratings, they are still prone to sealing failure and circuit corrosion under prolonged high-temperature and high-pressure washing. The main issues are: 1. Internal condensation: Temperature changes cause pressure fluctuations within the sealed cavity, easily leading to condensation that adheres to electronic components and corrodes them; 2. Poor air permeability: A completely sealed structure cannot balance internal and external air pressure, affecting sensor accuracy and causing abnormal weighing performance; 3. Waterproofing limitations: A truly long-term seal cannot be achieved, failing to withstand the demands of high-temperature and high-pressure washing environments. Furthermore, traditional structures have cleaning dead zones that are prone to bacterial growth, failing to meet stringent hygiene standards. Additionally, current technologies often use one-way valves for ventilation, which cannot simultaneously meet the IP69K waterproof standard. Therefore, a weighing scale with both high-precision waterproofing and ventilation capabilities is urgently needed.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a waterproof and breathable weighing scale that addresses the shortcomings of the existing technology. While achieving IP69K waterproof and dustproof performance, the instantaneous breathability avoids weighing errors caused by the pressure difference between the inside and outside during weighing, and also avoids the problem of internal condensation, thus significantly improving the service life.

[0006] This application discloses a waterproof and breathable weighing scale, including:

[0007] A scale body and a scale pan, wherein the scale pan is mounted above the scale body, and a sealing film is provided between the scale pan and the upper surface of the scale body;

[0008] The scale body includes a lower shell and an upper shell connected to the lower shell, the upper shell and the lower shell forming an inner cavity, and a sealing ring is provided between the upper shell and the lower shell;

[0009] The lower housing has multiple through holes distributed in the vertical direction. The upper ends of the multiple through holes are connected to the inner cavity. A breathable membrane is provided at the lower end of the through holes. A cover plate is provided on the side of the breathable membrane away from the upper housing, and the cover plate is connected to the lower housing.

[0010] Furthermore, in the aforementioned waterproof and breathable weighing scale, a groove is provided on the surface where the lower shell and the upper shell are joined, and the sealing ring is installed in the groove.

[0011] Furthermore, in the aforementioned waterproof and breathable weighing scale, the sealing ring is an O-ring.

[0012] Furthermore, in the aforementioned waterproof and breathable weighing scale, the air permeability of the breathable membrane is 1800 ml / min / cm. 2 @70mbar.

[0013] Furthermore, in the aforementioned waterproof and breathable weighing scale, the breathable membrane is made of ePTFE material.

[0014] Furthermore, in the aforementioned waterproof and breathable weighing scale, both the sealing membrane and the sealing ring are made of highly elastic food-grade hollow silicone material.

[0015] Furthermore, in the aforementioned waterproof and breathable weighing scale, the thickness of the sealing membrane is 0.3 mm.

[0016] Furthermore, in the aforementioned waterproof and breathable weighing scale, the lower housing has several perforated holes around the inner cavity.

[0017] Furthermore, in the aforementioned waterproof and breathable weighing scale, the upper and lower housings are connected by fasteners.

[0018] In summary, the structure adopted in this embodiment of the present invention has the following advantages:

[0019] The waterproof and breathable weighing scale of this invention features an inwardly recessed upper and lower shell sealing section, completely separated from the overall assembly structure. The perforated structure reduces water accumulation. The sealing section uses highly elastic food-grade hollow silicone, which facilitates better bonding with the shell and maintains durable compressive elasticity. The breathable membrane is located at the bottom of the lower shell and is designed to prevent impact from high-pressure water flow. An outer cover plate provides protection and ensures the membrane's lifespan. While achieving IP69K waterproof and dustproof performance, it balances internal and external air pressure. Instantaneous breathability prevents weighing errors caused by pressure differences during weighing and avoids internal condensation that corrodes components, significantly extending the scale's lifespan.

[0020] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front view of the waterproof and breathable weighing scale in this embodiment of the utility model;

[0023] Figure 2 This is a cross-sectional view of the waterproof and breathable weighing scale in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the waterproof and breathable weighing scale in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the ventilated structure of the lower shell of the waterproof and breathable weighing scale in this embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the upper shell of the waterproof and breathable weighing scale in this embodiment of the present invention.

[0027] The reference numerals in the above attached figures are as follows: 1. Scale body; 11. Upper shell; 12. Lower shell; 2. Scale pan; 3. Sealing membrane; 4. Sealing ring; 5. Breathable membrane; 6. Cover plate; 7. Hole. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0030] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0031] Reference Figures 1 to 5 As shown in the figure, this application discloses a waterproof and breathable weighing scale, including:

[0032] The scale body 1 and the scale pan 2 are mounted on top of the scale body 1, and a sealing film 3 is provided between the scale pan 2 and the upper surface of the scale body 1.

[0033] The scale body 1 includes a lower housing 12 and an upper housing 11 connected to the lower housing 12. The upper housing 11 and the lower housing 12 form an inner cavity, and a sealing ring 4 is provided between the upper housing 11 and the lower housing 12.

[0034] refer to Figure 3 and Figure 4 The lower housing 12 is provided with a plurality of through holes distributed in the vertical direction. The upper ends of the plurality of through holes are connected to the inner cavity. A breathable membrane 5 is provided at the lower end of the through holes. A cover plate 6 is provided on the side of the breathable membrane 5 away from the upper housing 11, and the cover plate 6 is connected to the lower housing 12.

[0035] Specifically, in this embodiment, the surface where the lower housing 12 and the upper housing 11 are joined is provided with a groove, and the sealing ring 4 is installed in the groove.

[0036] In this embodiment, the scale body 1 is made of high-strength engineering plastic, and the scale pan 2 is made of stainless steel 304. The corners of the scale pan 2 are rounded to facilitate cleaning and prevent bacterial growth. The sealing structure between the upper shell 11 and the lower shell 12 has an independent inner cavity, which can prevent waterproofing failure due to assembly and locking errors. The cover plate 6 can cover the breathable membrane 5, and the cover plate 6, which plays a protective role, can ensure the service life of the breathable membrane 5.

[0037] Specifically, in this embodiment, the sealing ring 4 is an O-ring.

[0038] Specifically, in this embodiment, the air permeability of the breathable membrane 5 is 1800 ml / min / cm. 2 @70mbar. While maintaining IP69K water and dust resistance, the breathability reaches 1800ml / min / cm². 2 A 70mbar breathable membrane 5 is installed at the bottom of the lower housing 12. To prevent damage from high-pressure water jets, the breathable membrane 5 is concealed, and the outer cover plate 6 ensures its lifespan. The IP69 waterproof rating means: the first digit 6 indicates the highest level of protection against solid objects, providing complete protection and preventing solid objects of any size (such as dust) from entering the equipment. The second digit 9 indicates the highest level of protection against liquids, meaning the equipment can withstand the impact of high-pressure water jets without penetration or damage.

[0039] Specifically, in this embodiment, the breathable membrane 5 is made of ePTFE material. The ePTFE fabric is made by laminating a polytetrafluoroethylene microporous membrane with ordinary fabric using a special process. This fabric combines the excellent waterproof and breathable properties of the ePTFE membrane, making it a top-tier waterproof and breathable material currently available.

[0040] Specifically, in this embodiment, both the sealing membrane 3 and the sealing ring 4 are made of highly elastic food-grade hollow silicone material. The use of highly elastic food-grade hollow silicone for the sealing portion makes it easier for the sealing performance to bond with the shell and maintain durable compressive elasticity.

[0041] Specifically, in this embodiment, the thickness of the sealing film 3 is 0.3 mm. (Refer to...) Figure 2 The sealing membrane 3 is also a circular structure. It is provided at the connection between the weighing pan 2 and the weighing body 1. It is made of highly elastic food-grade hollow silicone material with a thickness of 0.3mm. It will not affect the weighing while ensuring a seal.

[0042] Specifically, in this embodiment, the lower housing 12 is provided with a plurality of perforated holes 7 around the inner cavity. The perforated holes 7 can better drain water and prevent water accumulation inside the scale.

[0043] For details, please refer to Figure 2 and Figure 5 In this embodiment, the upper housing 11 and the lower housing 12 are connected by fasteners, including but not limited to screws, bolts, or other fastening structures. Several threaded holes are provided on the surface of the lower housing 12 near the upper housing 11, and multiple screws pass through the upper housing 11 and are threadedly connected to the lower housing 12. The bottom of the lower housing 12 is also provided with multiple feet forming the scale body 1.

[0044] With the above structure, the sealing parts of the upper shell 11 and lower shell 12 are recessed and completely separated from the overall assembly structure. An open frame structure is adopted, and the hollow hole structure 7 reduces water accumulation. The sealing part uses high-elasticity food-grade hollow silicone, which makes it easier to combine with the shell and maintain durable compressive elasticity. The breathable membrane 5 is set at the bottom of the lower shell 12. To prevent the impact of high-pressure water flow, a hidden design is adopted. The outer cover plate 6 ensures the service life of the breathable membrane 5. In this embodiment, the waterproof and breathable weighing scale achieves IP69K waterproof and dustproof performance while balancing the internal and external air pressure. The instantaneous breathability avoids weighing errors caused by the pressure difference between the inside and outside during weighing, and also avoids the problem of internal condensation corroding components, significantly improving the service life.

[0045] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0046] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0047] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A waterproof and breathable weighing scale, characterized in that, include: A scale body and a scale pan, wherein the scale pan is mounted above the scale body, and a sealing film is provided between the scale pan and the upper surface of the scale body; The scale body includes a lower shell and an upper shell connected to the lower shell, the upper shell and the lower shell forming an inner cavity, and a sealing ring is provided between the upper shell and the lower shell; The lower housing has multiple through holes distributed in the vertical direction. The upper ends of the multiple through holes are connected to the inner cavity. A breathable membrane is provided at the lower end of the through holes. A cover plate is provided on the side of the breathable membrane away from the upper housing, and the cover plate is connected to the lower housing.

2. The waterproof and breathable weighing scale according to claim 1, characterized in that, The surface where the lower housing and the upper housing meet is provided with a groove, and the sealing ring is installed in the groove.

3. The waterproof and breathable weighing scale according to claim 1, characterized in that, The sealing ring is an O-ring.

4. The waterproof and breathable weighing scale according to claim 1, characterized in that, The air permeability of the breathable membrane is 1800 ml / min / cm. 2 @70mbar.

5. The waterproof and breathable weighing scale according to claim 1, characterized in that, The breathable membrane is made of ePTFE material.

6. The waterproof and breathable weighing scale according to claim 1, characterized in that, Both the sealing membrane and the sealing ring are made of highly elastic food-grade hollow silicone material.

7. The waterproof and breathable weighing scale according to claim 1, characterized in that, The thickness of the sealing film is 0.3 mm.

8. The waterproof and breathable weighing scale according to claim 1, characterized in that, The lower housing has several perforated holes around the inner cavity.

9. The waterproof and breathable weighing scale according to claim 1, characterized in that, The upper and lower housings are connected by fasteners.

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