Waterproof panel assembly and manufacturing method thereof

Abstract

The invention discloses a waterproof panel assembly and a manufacturing method thereof, the waterproof panel assembly comprises a shell, a diaphragm and a waterproof layer, the surface of the shell is provided with a waterproof groove, the waterproof groove is arranged in a circle in the circumferential direction of the shell, the side wall of the waterproof groove is also provided with a notch, and the notch is communicated with the waterproof groove. The diaphragm is connected to the shell, and the shell is completely covered with the diaphragm. The waterproof layer is arranged in the waterproof groove and located between the shell and the membrane, the waterproof layer is formed through in-membrane injection molding through the notch, and the waterproof layer is tightly attached to the waterproof groove and the membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of home appliance control panels, and in particular to a waterproof panel assembly and a manufacturing method thereof. Background Art

[0002] Traditional home appliance control panels mostly use a diaphragm structure, which has a simple structure but limited waterproof performance. In actual use, especially in humid environments such as kitchens and bathrooms, moisture can easily penetrate into the inside of the diaphragm, causing a short circuit in the circuit, which not only affects the normal use of the product, but may also cause safety hazards. Therefore, improving the waterproof performance of the diaphragm panel has become an urgent problem to be solved. In the related technology, the existing home appliance control panel needs to ensure waterproof performance. Generally, after the diaphragm and the shell are bonded, secondary processing such as filling resin and waterproof glue can be performed, but this filling requires additional manpower, affects processing efficiency, and the waterproof performance is average. There is also a method of directly injection molding the diaphragm and the shell as one to ensure the sealing between the diaphragm and the shell, but this method is prone to bulging of the wires and has a high defective rate, which is not conducive to use. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a waterproof panel assembly, which can significantly improve the waterproof performance of the membrane, ensure that the home appliance product can operate stably under various usage environments, and the membrane manufacturing method is simple and the production efficiency is high.

[0004] The present invention also provides a method for manufacturing the waterproof panel assembly.

[0005] According to the first aspect of the present invention, the waterproof panel assembly comprises a shell, a membrane and a waterproof layer. The surface of the shell is provided with a waterproof groove, the waterproof groove is arranged around the circumference of the shell, and the side wall of the waterproof groove is also provided with a notch, the notch is connected to the waterproof groove. The membrane is connected to the shell, and the membrane completely covers the shell. The waterproof layer is arranged in the waterproof groove and is located between the shell and the membrane. The waterproof layer is injected through the notch through the membrane, and the waterproof layer is tightly fitted with the waterproof groove and the membrane.

[0006] The waterproof panel assembly according to the embodiment of the present invention has at least the following beneficial effects: by setting a waterproof groove around the shell surface and filling it with a waterproof layer, an effective waterproof barrier is formed, which effectively prevents moisture from penetrating into the inside of the diaphragm, and greatly reduces the risk of short circuit caused by moisture intrusion. It should be emphasized that compared with the two methods of secondary processing and filling resin, waterproof glue and other materials after the diaphragm and the shell are bonded, or the diaphragm and the shell are directly integrally injection molded, the former has general waterproof performance, and the latter is prone to wire bulging and a high defective rate. The waterproof layer proposed in the present invention is injection molded in the membrane through a notch, and is tightly fitted with the waterproof groove and the diaphragm, which not only enhances the stability of the structure, but also further improves the waterproof effect, ensures the reliability of long-term use, and does not require secondary processing, thereby improving production efficiency. At the same time, due to the close combination of the waterproof layer and the diaphragm, the difficulty and cost of maintenance are reduced.

[0007] According to some embodiments of the present invention, there are four notches, and the four notches are equidistant and evenly arranged along the circumference of the shell.

[0008] According to some embodiments of the present invention, a plurality of through holes are provided in the waterproof groove, and the waterproof layer partially extends into the through holes to reinforce the waterproof layer and the shell.

[0009] According to some embodiments of the present invention, a fusion adhesive is provided on a surface of the membrane facing the shell, and the fusion adhesive is arranged around the circumference of the membrane and can completely cover the waterproof groove to fit tightly with the waterproof layer.

[0010] According to some embodiments of the present invention, a bonding adhesive is further provided on a surface of the membrane facing the shell, and the bonding adhesive is provided on the inner side of the fusion adhesive to enable the shell to be bonded to the membrane.

[0011] According to some embodiments of the present invention, the shell is disc-shaped, the diaphragm is correspondingly disc-shaped, and the waterproof groove is an annular groove and is arranged close to the edge of the shell.

[0012] According to some embodiments of the present invention, the membrane is provided with a plurality of button portions, and a display portion is also provided at the center of the membrane, and the plurality of button portions are evenly arranged around the display portion.

[0013] According to some embodiments of the present invention, the shell is provided with a light-transmitting groove, which corresponds to the position of the display part, and the shell is provided with a plurality of air-avoiding through holes, which are arranged around the light-transmitting groove, and each of the air-avoiding through holes corresponds one-to-one to the position of each of the button parts.

[0014] According to some embodiments of the present invention, the diaphragm is provided with a positioning through hole, and the shell is correspondingly provided with a positioning protrusion, and the positioning protrusion partially extends into the positioning through hole to position and connect the diaphragm and the shell.

[0015] A method for manufacturing a waterproof panel assembly according to a second aspect of the present invention comprises the following steps:

[0016] Manufacturing the housing by injection molding;

[0017] manufacturing the diaphragm;

[0018] Bonding the membrane to the shell, so that the membrane completely covers the surface of the shell having the waterproof groove;

[0019] The waterproof layer is formed by intra-membrane injection molding of the bonded panel assembly.

[0020] The panel assembly according to the embodiment of the present invention has at least the following beneficial effects: The method for manufacturing the waterproof panel assembly proposed in the present invention organically combines the steps of shell manufacturing, diaphragm manufacturing and waterproof layer injection molding, simplifies the production process and improves production efficiency. The waterproof layer formed by the in-membrane injection molding technology fits tightly with the shell and the diaphragm body without gaps or bubbles, effectively preventing moisture penetration and improving the waterproof performance of the product. The waterproof layer has a strong bonding force with the shell and the diaphragm body, can resist external shocks and vibrations, and prolongs the service life of the product. By optimizing the production process and improving production efficiency, secondary processing is reduced, the yield rate is improved, and the production cost is reduced.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 It is an exploded schematic diagram of a waterproof panel assembly according to an embodiment of the present invention;

[0024] Figure 2 The present invention is a flowchart of a method for manufacturing a waterproof panel assembly according to an embodiment of the present invention.

[0025] Reference numerals: housing 100 ; waterproof groove 110 ; through hole 111 ; notch 120 ; light-transmitting groove 130 ; air-avoiding through hole 140 ; ​​positioning protrusion 150 ; membrane 200 ; display portion 210 ; button portion 220 ; positioning through hole 230 ; waterproof layer 300 . DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution. In the description of the present invention, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the description of the present specification, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] Traditional home appliance control panels mostly use a diaphragm structure, which has a simple structure but limited waterproof performance. In actual use, especially in humid environments such as kitchens and bathrooms, moisture can easily penetrate into the diaphragm, causing a short circuit, which not only affects the normal use of the product, but may also cause safety hazards. Therefore, improving the waterproof performance of diaphragm panels has become an urgent problem to be solved.

[0031] For this purpose, refer to Figure 1 The present invention provides a waterproof panel assembly, including a housing 100, a membrane 200 and a waterproof layer 300. The surface of the housing 100 is provided with a waterproof groove 110, and the waterproof groove 110 is arranged around the circumference of the housing 100. The side wall of the waterproof groove 110 is also provided with a notch 120, and the notch 120 is connected to the waterproof groove 110. The membrane 200 is connected to the housing 100, and the membrane 200 completely covers the housing 100. The waterproof layer 300 is arranged in the waterproof groove 110 and is located between the housing 100 and the membrane 200. The waterproof layer 300 is formed by intramold injection molding through the notch 120, and the waterproof layer 300 is tightly fitted with the waterproof groove 110 and the membrane 200.

[0032] Specifically, the housing 100 with the waterproof groove 110 is prepared by an injection molding process. The waterproof groove 110 surrounds the housing 100 in a circle, and the groove depth and width are set according to actual needs to ensure sufficient waterproof effect. A number of notches 120 are opened on the side wall of the waterproof groove 110. The size and position of the notches 120 need to ensure that the waterproof layer 300 can be smoothly injected and evenly distributed. The pre-prepared diaphragm 200 is connected to the housing 100 by bonding or hot pressing, etc., to ensure that the diaphragm 200 completely covers the surface of the housing 100 without gaps or bubbles. Then the waterproof layer 300 is injected into the membrane through the notch 120 to ensure that the waterproof layer 300 evenly fills the waterproof groove 110 and fits tightly with the housing 100 and the diaphragm 200. After the waterproof material is cured, a solid waterproof barrier is formed. It should be noted that the waterproof layer 300 can be a material with good waterproof performance such as polyurethane, epoxy resin, etc.

[0033] It is understandable that by setting a waterproof groove 110 around the surface of the housing 100 and filling the waterproof layer 300, an effective waterproof barrier is formed, which effectively prevents moisture from penetrating into the inside of the diaphragm, greatly reducing the risk of short circuit caused by moisture intrusion. It should be emphasized that compared with the two methods of secondary processing and filling resin, waterproof glue and other materials after the diaphragm 200 and the housing 100 are bonded, or the diaphragm 200 and the housing 100 are directly integrally injection molded, the former has general waterproof performance, and the latter is prone to line bulging and high defective rate. The waterproof layer 300 proposed in the present invention is injected into the film through the notch 120, and is closely fitted with the waterproof groove 110 and the diaphragm 200, which not only enhances the stability of the structure, but also further improves the waterproof effect, ensures the reliability of long-term use, and does not require secondary processing, improves production efficiency, and at the same time, due to the close combination of the waterproof layer 300 and the diaphragm 200, reduces the difficulty and cost of maintenance.

[0034] Specifically, refer to Figure 1 In some embodiments, the housing 100 is provided with four notches 120, and the four notches 120 on the waterproof groove 110 are configured to be evenly distributed along the circumference of the housing 100, and the angle intervals between each notch 120 are equal, for example, a notch 120 is provided every 90 degrees. This layout not only ensures that the waterproof layer 300 can flow evenly and fill the entire waterproof groove 110 during the injection molding process, but also enhances the structural strength of the waterproof layer 300 and prevents rupture caused by local stress concentration. By equidistantly and evenly arranging the notches 120, the bonding force between the waterproof layer 300 and the waterproof groove 110 is improved, so that the waterproof layer 300 is more firmly attached to the housing 100, and the waterproof performance is further enhanced. At the same time, this design also simplifies the production process and improves production efficiency.

[0035] Furthermore, a plurality of through holes 111 are provided in the waterproof groove 110, and these through holes 111 are arranged along the circumference or a specific path of the waterproof groove 110. During the injection molding process of the waterproof layer 300, the material of the waterproof layer 300 will partially extend into these through holes 111 to form a mechanical locking structure. This not only increases the contact area between the waterproof layer 300 and the housing 100, but also physically reinforces the waterproof layer 300 to prevent it from falling off or shifting during use.

[0036] It should be noted that a fusion adhesive and a fitting adhesive are respectively provided on the surface of the side of the diaphragm 200 facing the shell 100. The fusion adhesive is arranged around the circumference of the diaphragm 200 and completely covers the waterproof groove 110 to ensure a close fit with the waterproof layer 300. The fitting adhesive is arranged on the inner side of the fusion adhesive to achieve direct bonding between the shell 100 and the diaphragm 200. These two adhesives can be different types of materials, such as hot melt adhesive, pressure-sensitive adhesive, etc., which are selected according to specific needs. It should be emphasized that the role of the fusion adhesive is that when the shell 100 and the diaphragm 200 are injected into the membrane to form the waterproof layer 300, when high temperature is generated, the fusion adhesive fuses with the waterproof layer 300 to achieve a close fit between the shell 100 and the diaphragm 200, thereby further enhancing the waterproof effect.

[0037] Reference Figure 1 In some embodiments, the housing 100 is disc-shaped, the diaphragm 200 is disc-shaped accordingly, the waterproof groove 110 is an annular groove, and is arranged near the edge of the housing 100. Specifically, the diaphragm 200 is provided with a plurality of button parts 220, and a display part 210 is also arranged in the center of the diaphragm 200, and the plurality of button parts 220 are evenly arranged around the display part 210. Further, the housing 100 is provided with a light-transmitting groove 130, the light-transmitting groove 130 corresponds to the position of the display part 210, and the housing 100 is provided with a plurality of air-avoiding through holes 140, the plurality of air-avoiding through holes 140 are arranged around the light-transmitting groove 130, and each air-avoiding through hole 140 corresponds to the position of each button part 220. The disc shape meets the appearance requirements of most home appliance control panels, and the layout of the button part 220 and the display part 210 is convenient for user operation. The design of the light-transmitting groove 130 and the air-avoiding through hole 140 ensures the clarity and sensitivity of the buttons and the display.

[0038] It should be noted that the waterproof panel assembly proposed by the present invention may also be a rectangle, a triangle or other geometric shapes, which is not the only limitation.

[0039] Reference Figure 1 The diaphragm 200 is provided with a positioning through hole 230, and the housing 100 is correspondingly provided with a positioning protrusion 150, and the positioning protrusion 150 partially extends into the positioning through hole 230 to position and connect the diaphragm 200 and the housing 100. The positioning through hole 230 and the positioning protrusion 150 realize the precise positioning connection between the diaphragm 200 and the housing 100, simplifying the assembly process and improving production efficiency and product quality.

[0040] Reference Figure 2 Furthermore, the present invention also proposes a method for manufacturing a waterproof panel assembly, comprising the following steps:

[0041] S100: manufacturing a housing by injection molding;

[0042] S200: manufacturing diaphragm;

[0043] S300: bonding the diaphragm and the housing to each other, so that the diaphragm completely covers the surface of the housing having the waterproof groove;

[0044] S400: The laminated panel components are molded into a waterproof layer through intra-membrane injection molding.

[0045] It is understood that in a specific embodiment, first, according to the design requirements, a suitable injection molding material and mold are selected, and the molten plastic is injected into the mold, and the housing 100 with a waterproof groove 110 and a notch 120 is formed through a high pressure and cooling process. The dimensional accuracy and surface finish of the housing 100 must be ensured during the injection molding process so that the subsequent steps can proceed smoothly. The diaphragm 200 can be manufactured in a variety of ways, such as printing, etching or thin film deposition. According to specific needs, circuit patterns, key marks and display areas are formed on the diaphragm 200. The material of the diaphragm 200 must have good conductivity, light transmittance and weather resistance to ensure the performance and life of the product. Then, an appropriate amount of bonding adhesive and fusion adhesive are applied to the back side of the diaphragm 200 (the side facing the housing 100), and the diaphragm 200 is aligned with the housing 100 so that the waterproof groove 110 and the notch 120 are aligned with the corresponding positions on the diaphragm 200. Then, the diaphragm 200 is tightly bonded to the housing 100 by hot pressing or mechanical pressing. During the bonding process, it is necessary to ensure that the diaphragm 200 completely covers the surface of the waterproof groove 110 of the housing 100 without bubbles or gaps. Finally, the bonded panel assembly is placed in the injection mold and the waterproof material is injected. The waterproof material flows into the waterproof groove 110 through the notch 120 under high pressure, and expands along the side wall and bottom of the waterproof groove 110, and finally fits tightly with the diaphragm 200 body. During the injection molding process, parameters such as injection pressure, speed and temperature need to be controlled to ensure that the waterproof layer 300 is uniform, dense and defect-free. After the waterproof material is cured, a solid waterproof barrier is formed.

[0046] It is easy to understand that the waterproof panel assembly manufacturing method proposed in the present invention organically combines the steps of manufacturing the housing 100, manufacturing the diaphragm 200, and injection molding the waterproof layer 300, thereby simplifying the production process and improving production efficiency. The waterproof layer 300 formed by the membrane injection molding technology fits tightly with the housing 100 and the diaphragm 200 body without gaps or bubbles, effectively preventing moisture penetration and improving the waterproof performance of the product. The waterproof layer 300 has a strong bonding force with the housing 100 and the diaphragm 200 body, can resist external shocks and vibrations, and prolongs the service life of the product. By optimizing the production process and improving production efficiency, secondary processing is reduced, the yield rate is improved, and the production cost is reduced.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A waterproof panel assembly, characterized in that: include: The shell body has a waterproof groove on its surface, the waterproof groove is arranged around the circumference of the shell body, and a notch is also arranged on the side wall of the waterproof groove, the notch is connected to the waterproof groove; A diaphragm is connected to the housing, and the diaphragm completely covers the housing; The waterproof layer is arranged in the waterproof groove and is located between the shell and the diaphragm. The waterproof layer is formed by intra-membrane injection molding through the notch. The waterproof layer is tightly fitted to the waterproof groove and the diaphragm.

2. The waterproof panel assembly according to claim 1, characterized in that: There are four notches, and the four notches are equidistant and evenly arranged along the circumference of the shell.

3. The waterproof panel assembly according to claim 1, characterized in that: A plurality of through holes are arranged in the waterproof groove, and the waterproof layer partially extends into the through holes to reinforce the waterproof layer and the shell.

4. The waterproof panel assembly according to claim 1, characterized in that: A fusion adhesive is arranged on one side surface of the membrane facing the shell. The fusion adhesive is arranged around the circumference of the membrane and can completely cover the waterproof groove to fit tightly with the waterproof layer.

5. The waterproof panel assembly according to claim 4, characterized in that: A bonding adhesive is also provided on one side of the membrane facing the shell, and the bonding adhesive is provided on the inner side of the fusion adhesive so as to make the shell and the membrane bonded.

6. The waterproof panel assembly according to claim 1, characterized in that: The shell is in the shape of a disk, the diaphragm is in the shape of a disk accordingly, and the waterproof groove is an annular groove and is arranged close to the edge of the shell.

7. The waterproof panel assembly according to claim 1, characterized in that: The membrane is provided with a plurality of button parts, and a display part is also provided at the center of the membrane, and the plurality of button parts are evenly arranged around the display part.

8. The waterproof panel assembly according to claim 7, characterized in that: The shell is provided with a light-transmitting groove, which corresponds to the position of the display part. The shell is provided with a plurality of air-avoiding through holes, which are arranged around the light-transmitting groove, and each of the air-avoiding through holes corresponds to the position of each of the button parts one by one.

9. The waterproof panel assembly according to claim 8, characterized in that: The diaphragm is provided with a positioning through hole, and the shell is correspondingly provided with a positioning convex point, and the positioning convex point partially extends into the positioning through hole to position and connect the diaphragm and the shell.

10. A method for manufacturing a waterproof panel assembly, used for manufacturing the waterproof panel assembly according to any one of claims 1 to 9, characterized in that: The steps include: Manufacturing the housing by injection molding; manufacturing the diaphragm; Bonding the membrane to the shell, so that the membrane completely covers the surface of the shell having the waterproof groove; The waterproof layer is formed by intra-membrane injection molding of the bonded panel assembly.

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