Sucking disc and manufacturing method of sucking disc

Abstract

The invention relates to the technical field of sucker manufacturing, in particular to a sucker and a manufacturing method of the sucker. The suction cup comprises a suction cup body and a sealing ring, the suction cup body comprises a connecting part located in the center and a supporting part connected to the outer ring of the connecting part, a cavity is defined by the connecting part and the supporting part, an installation face is formed on the supporting part, the sealing ring is arranged on the installation face, and the sealing ring is arranged on the sealing ring. And the sealing ring is formed on the mounting surface through injection molding. By the adoption of the mode, the reliability and sealing performance of connection between the suction cup body and the sealing ring can be improved.

Description

Technical Field

[0001] This invention relates to the field of suction cup manufacturing technology, and in particular to a suction cup and a method for manufacturing a suction cup. Background Technology

[0002] Suction cups are widely used in electronic device stands, helping to vacuum-adhere the device to a surface for stable support. To enhance stability after adhesion, existing suction cups often include a sealing ring, which is then glued to the suction cup.

[0003] Using adhesive to fix the sealing ring on a suction cup has several drawbacks in practical applications. For example, the suction cup itself is made of silicone, and the sealing ring is also a relatively soft material, making it difficult to secure them together during the bonding process. Furthermore, adhesive bonding is prone to melting or aging and failing in high-temperature environments, resulting in a weak bond between the sealing ring and the suction cup. Summary of the Invention

[0004] This invention provides a suction cup and a method for manufacturing the suction cup, which can improve the reliability and sealing performance of the connection between the suction cup body and the sealing ring.

[0005] The present invention discloses a suction cup, comprising: a suction cup body and a sealing ring. The suction cup body includes a connecting portion located at the center and a supporting portion connected to the outer ring of the connecting portion. The connecting portion and the supporting portion enclose a cavity. A mounting surface is formed on the supporting portion, and a sealing ring is disposed on the mounting surface. The sealing ring is injection molded onto the mounting surface.

[0006] Optionally, the support portion includes an expansion portion and a supporting portion connected to each other. The expansion portion is frustum-shaped, with its small end connected to the connecting portion and its large end connected to the supporting portion. The sealing ring is located on the supporting portion.

[0007] Optionally, the plane containing the supporting portion is parallel to the plane containing the connecting portion.

[0008] Optionally, the area corresponding to the sealing ring of the supporting portion is provided with a textured surface.

[0009] Optionally, the hardness of the sealing ring is less than the hardness of the suction cup body.

[0010] Optionally, the hardness of the sealing ring is at least 10A less than the hardness of the suction cup body.

[0011] Optionally, the hardness of the suction cup body is 30A-60A.

[0012] Optionally, the hardness of the sealing ring is 0A-20A.

[0013] Optionally, the connecting part is provided with a vent hole, which is used to connect a negative pressure source.

[0014] Optionally, the connecting part is also provided with positioning holes.

[0015] Optionally, the suction cup body is made of solid silicone, and the sealing ring is made of liquid silicone.

[0016] The present invention also discloses a method for manufacturing a suction cup, used to manufacture a suction cup as described in any one of the above claims, the method comprising:

[0017] The suction cup body is made of solid silicone. The suction cup body includes a connecting part located at the center and a support part connected to the outer ring of the connecting part. The mounting part and the support part surround to form a cavity, and a mounting surface is formed on the support part. The suction cup body is installed in the suction cup mold, and the suction cup mold forms a first cavity on the mounting surface for injection molding of the sealing ring; Heat the suction cup mold to 100-200 degrees Celsius; Liquid silicone is injected into the first cavity and fills the first cavity completely; The suction cup mold is cooled so that the liquid silicone forms a sealing ring on the mounting surface.

[0018] The beneficial effects of the suction cup and its manufacturing method provided in this invention are as follows: A cavity is formed by the connecting portion located at the center and the supporting portion connected to the outer ring of the connecting portion. In practical applications, the connecting portion can be connected to external components (such as electronic device brackets, negative pressure sources, etc.). The supporting portion is arranged around the connecting portion to facilitate the formation of a sealed space between it and the table surface. A mounting surface is formed on the supporting portion, and a sealing ring is injection molded onto the mounting surface, ensuring a seamless fit between the sealing ring and the mounting surface. This eliminates gaps that may result from adhesive bonding, improving the reliability and sealing of the connection between the suction cup body and the sealing ring, reducing air leakage inside the cavity, and thus enhancing the suction force and stability of the suction cup. Attached Figure Description

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the suction cup structure provided in an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the suction cup provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the manufacturing process of the suction cup provided in an embodiment of the present invention.

[0020] The labels for the attached figures are as follows: 100. Suction cup; 110. Suction cup body; 112. Connecting part; 114. Support part; 1142. Mounting surface; 1144. Expansion part; 1146. Supporting part; 120. Sealing ring; 130. Vent hole; 140. Positioning hole. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a suction cup 100, including: a suction cup body 110 and a sealing ring 120. The suction cup body 110 includes a connecting portion 112 located at the center and a support portion 114 connected to the outer ring of the connecting portion 112. The connecting portion 112 and the support portion 114 surround to form a cavity. A mounting surface 1142 is formed on the support portion 114, and a sealing ring 120 is disposed on the mounting surface 1142. The sealing ring 120 is injection molded on the mounting surface 1142.

[0023] Specifically, the suction cup body 110 is the main body that bears the structure and generates the adsorption force, while the sealing ring 120 is an auxiliary component that enhances the sealing performance and improves the adsorption stability. Through the cooperation between the suction cup body 110 and the sealing ring 120, the suction cup 100 can be adsorbed onto a relatively rough table surface. When the air inside the cavity is discharged to form a negative pressure, an adsorption force can be generated to fix the suction cup 100 to the table surface. In the vacuum adsorption state, the sealing ring 120 can fit more tightly with the table surface to ensure the vacuum adsorption effect.

[0024] The suction cup 100 provided in this embodiment of the application has a cavity formed by a connecting portion 112 located at the center and a support portion 114 connected to the outer ring of the connecting portion 112. In practical applications, the connecting portion 112 can be connected to external components (such as electronic device brackets, negative pressure sources, etc.). The support portion 114 is arranged around the connecting portion 112 to form a sealed space with the table surface. A mounting surface 1142 is formed on the support portion 114, and a sealing ring 120 is injection molded on the mounting surface 1142, so that the sealing ring 120 and the mounting surface 1142 fit seamlessly, eliminating gaps that may be caused by glue bonding. This improves the reliability and sealing of the connection between the suction cup body 110 and the sealing ring 120, reduces air leakage inside the cavity, and thus enhances the adsorption force and adsorption stability of the suction cup 100.

[0025] like Figure 1 and Figure 2As shown, the support portion 114 includes an expansion portion 1144 and a supporting portion 1146 connected to each other. The expansion portion 1144 is frustum-shaped. The small end of the expansion portion 1144 is connected to the connecting portion 112, and the large end of the expansion portion 1144 is connected to the supporting portion 1146. The sealing ring 120 is located on the supporting portion 1146.

[0026] Specifically, the expansion portion 1144 is frustum-shaped, with its smaller end connected to the connecting portion 112 and its larger end connected to the supporting portion 1146, forming a structure that gradually expands outward from the connecting portion 112. The supporting portion 1146 is the end structure of the supporting portion 114 and is the part that directly contacts the table surface through the sealing ring 120. The frustum-shaped expansion portion 1144 has good mechanical properties. The structure that expands outward from the connecting portion 112 can evenly distribute the pressure generated during adsorption to the supporting portion 1146, avoiding localized stress concentration that could lead to deformation or damage to the supporting portion 114. At the same time, the smooth connection between the expansion portion 1144, the connecting portion 112, and the supporting portion 1146 makes the overall structure of the suction cup body 110 stronger. It is less prone to deformation when bearing the weight of electronic devices and minor external impacts, thus improving the load-bearing capacity and structural stability of the suction cup 100.

[0027] In an optional embodiment of this application, the plane where the supporting portion 1146 is located is parallel to the plane where the connecting portion 112 is located.

[0028] Specifically, the plane of the supporting part 1146 is parallel to the plane of the connecting part 112, ensuring that the end face of the supporting part 1146 is a flat planar structure. When in contact with the smooth table surface, it can form a comprehensive and uniform contact area, avoiding sealing failure due to local warping. The sealing ring 120 is set on the parallel supporting part 1146, which can be subjected to uniform pressure, tightly adhering to the table surface and the supporting part 1146, completely blocking the passage for air to enter the cavity, significantly improving sealing reliability and extending the adsorption retention time of the suction cup 100. In addition, the plane of the supporting part 1146 is parallel to the plane of the connecting part 112, which simplifies the mold design of the suction cup body 110, eliminating the need for a complex inclined structure and reducing the difficulty and cost of mold processing.

[0029] In an optional embodiment of this application, the area corresponding to the abutment portion 1146 and the sealing ring 120 is provided with a textured surface.

[0030] Specifically, the raised texture is provided on the surface of the supporting portion 1146 and is only distributed in the area corresponding to the sealing ring 120. That is, after the sealing ring 120 is injection molded, it will cover and embed itself in the raised texture. The shape of the raised texture can be designed according to actual needs, such as grid pattern, stripe, dotted protrusions / grooves, etc. The above-mentioned form helps to increase the contact area between the sealing ring 120 and the supporting portion 1146, and can enhance the connection strength and stability between the sealing ring 120 and the supporting portion 1146.

[0031] In an optional embodiment of this application, the hardness of the sealing ring 120 is less than the hardness of the suction cup body 110.

[0032] Specifically, the suction cup body 110 has a high hardness, which can withstand the weight of electronic devices, external impacts, and pressure generated by negative pressure, maintaining the overall structural stability and avoiding deformation; the sealing ring 120 has a lower hardness and better flexibility, which can adapt to the surface roughness of different tabletops. Even if there are minor scratches or protrusions on the tabletop, it can deform itself to fit tightly and fill the contact gap, solving the problem that the hard material sealing ring 120 is difficult to adapt to non-absolutely smooth tabletops, and significantly improving the sealing effect and adsorption stability.

[0033] In an optional embodiment of this application, the hardness of the sealing ring 120 is at least 10A less than the hardness of the suction cup body 110.

[0034] Specifically, the hardness unit "A" here refers to Shore hardness, which is used for hardness testing of elastomers (such as silicone). The higher the value, the greater the hardness of the material. The hardness of the sealing ring 120 is at least 10A less than that of the suction cup body 110, which ensures that the sealing ring 120 has sufficient flexibility, while the suction cup body 110 has sufficient structural strength.

[0035] In an optional embodiment of this application, the hardness of the suction cup body 110 is 30A-60A.

[0036] Specifically, a hardness of 30A-60A ensures that the suction cup body 110 has sufficient structural strength to support the weight of electronic devices such as mobile phones and tablets, while also possessing a certain degree of flexibility to ensure usability during use. The preferred hardness of the suction cup body 110 is 40A-50A.

[0037] In an optional embodiment of this application, the hardness of the sealing ring 120 is 0A-20A.

[0038] Specifically, a Shore hardness range of 0A-20A falls into the low hardness category, possessing extremely strong flexibility and deformation capacity, allowing it to fully conform to the minute irregularities of the tabletop and even fill in minor scratches and gaps. This design effectively reduces air leakage inside the cavity, extends the suction cup 100's adsorption and retention time, and ensures stable support for electronic equipment. The preferred hardness range for the sealing ring 120 is 0A-5A.

[0039] like Figure 1 As shown, a vent hole 130 is provided on the connecting part 112, which is used to connect a negative pressure source.

[0040] Specifically, the vent 130 on the connecting part 112 facilitates the connection of a negative pressure source to the cavity of the suction cup 100 when the suction cup 100 is applied to the electronic device bracket. Activation of the negative pressure source creates a vacuum in the cavity of the suction cup 100, ensuring stable adhesion of the suction cup 100 to the adhesion surface. Specifically, the negative pressure source includes a pressure sensor and a pump. The pressure sensor, connected to the vent 130 via a pipe, monitors the internal pressure of the suction cup 100 cavity in real time, allowing for timely detection of leaks caused by sealing failure, impurities on the surface, structural aging, etc. When the pressure falls below a set threshold (i.e., insufficient adhesion), the pump is activated to evacuate the cavity of the suction cup 100, maintaining a sufficient negative pressure within the cavity, thus ensuring stable adhesion of the suction cup 100 to the adhesion surface.

[0041] like Figure 1 As shown, the connecting part 112 is also provided with a positioning hole 140, which is used for installation and positioning with other components. Specifically, in the suction cup bracket, a mounting post (not shown in the figure) that is adapted to the positioning hole 140 can be extended and formed on the bracket base. The mounting post is inserted into the positioning hole 140 to achieve the initial installation and positioning of the suction cup 100 and the bracket base.

[0042] In an optional embodiment of this application, the suction cup body 110 is made of solid silicone, and the sealing ring 120 is made of liquid silicone.

[0043] Specifically, solid silicone possesses good structural strength, aging resistance, and temperature resistance, making it suitable as a load-bearing material for the suction cup body 110. It can be manufactured into a pre-defined structure through processes such as injection molding and compression molding. Liquid silicone possesses excellent flowability, flexibility, and adhesion properties, making it suitable as a material for the sealing ring 120. It can be formed on the mounting surface 1142 of the solid silicone suction cup body 110 through injection molding, forming an integrated structure after cooling. Both are silicone materials with good compatibility, and during injection molding, they can form tight intermolecular bonds, further enhancing the connection strength.

[0044] like Figure 3 As shown, the present invention also discloses a method for manufacturing a suction cup 100, used to manufacture the suction cup 100 in the foregoing embodiments, the method comprising: S100. A suction cup body 110 is made of solid silicone. The suction cup body 110 includes a connecting part 112 located at the center and a support part 114 connected to the outer ring of the connecting part 112. The mounting part and the support part 114 surround each other to form a cavity. A mounting surface 1142 is formed on the support part 114.

[0045] Specifically, solid silicone is used as the raw material to ensure the structural precision and strength of the suction cup body 110, laying the foundation for the subsequent injection molding of the sealing ring 120. The suction cup body 110 can be manufactured by injection molding.

[0046] S200. The suction cup body 110 is installed in the suction cup mold, and the suction cup mold forms a first cavity on the mounting surface 1142 for the sealing ring 120 to be injection molded.

[0047] Specifically, the prepared suction cup body 110 is installed into the suction cup mold. The suction cup mold can position the suction cup body 110 to ensure that the mounting surface 1142 corresponds to the first cavity in the mold, thereby ensuring that the sealing ring 120 can be accurately injected onto the mounting surface 1142.

[0048] S300, heat the suction cup mold to 100-200 degrees.

[0049] Specifically, the specific temperature setting can be controlled according to different ratios of liquid silica gel.

[0050] S400, Inject liquid silicone into the first cavity and fill the first cavity completely.

[0051] Specifically, liquid silicone is injected into the first cavity of the suction cup mold using injection molding equipment. The liquid silicone exhibits excellent fluidity at high temperatures, allowing it to fully fill all parts of the first cavity and ensure tight contact with the mounting surface 1142 of the suction cup body 110. Furthermore, it is necessary to ensure complete filling of the liquid silicone to guarantee that the resulting sealing ring 120 is free of defects such as air bubbles or insufficient material.

[0052] S500, cooling suction cup mold, so that liquid silicone forms a sealing ring 120 on the mounting surface 1142.

[0053] Specifically, after the liquid silicone is filled, the suction cup mold is cooled to allow the liquid silicone to solidify in the first cavity, forming a sealing ring 120 that tightly adheres to the mounting surface 1142. After cooling, the suction cup mold is opened, and the finished suction cup 100 can be removed.

[0054] The above manufacturing method involves directly injection molding liquid silicone onto a solid silicone suction cup body 110 to form a sealing ring 120 made of liquid silicone. The hardness of the liquid silicone is controlled to be lower than that of the solid silicone, allowing the sealing ring 120 to achieve a sealing effect on rough surfaces. The solid silicone, being harder than the sealing ring 120, provides sufficient support for the suction cup body 110. Since the sealing ring 120 is directly injection molded onto the suction cup body 110, no glue is needed. Furthermore, due to the properties of liquid and solid silicone, the liquid silicone adheres well to the solid silicone during injection molding, ensuring the connection strength and sealing performance at the joint.

[0055] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. A suction cup, characterized in that, include: The suction cup body includes a connecting part located at the center and a supporting part connected to the outer ring of the connecting part. The connecting part and the supporting part enclose a cavity. A mounting surface is formed on the supporting part, and a sealing ring is disposed on the mounting surface. The sealing ring is injection molded onto the mounting surface.

2. The suction cup according to claim 1, characterized in that, The support portion includes an expansion portion and a supporting portion connected to each other. The expansion portion is frustum-shaped. The small end of the expansion portion is connected to the connecting portion, and the large end of the expansion portion is connected to the supporting portion. The mounting surface is located on the supporting portion.

3. The suction cup according to claim 2, characterized in that, The plane containing the supporting part is parallel to the plane containing the connecting part.

4. The suction cup according to claim 2 or 3, characterized in that, The area corresponding to the sealing ring of the supporting part is provided with a textured surface.

5. The suction cup according to any one of claims 1-3, characterized in that, The hardness of the sealing ring is less than the hardness of the suction cup body.

6. The suction cup according to claim 5, characterized in that, The hardness of the sealing ring is at least 10A less than the hardness of the suction cup body.

7. The suction cup according to claim 6, characterized in that, The hardness of the suction cup body is 30A-60A.

8. The suction cup according to claim 6, characterized in that, The hardness of the sealing ring is 0A-20A.

9. The suction cup according to any one of claims 1-3, characterized in that, The connecting part is provided with a vent hole, which is used to connect a negative pressure source.

10. The suction cup according to any one of claims 1-3, characterized in that, The suction cup body is made of solid silicone, and the sealing ring is made of liquid silicone.

11. A method for manufacturing a suction cup, used to manufacture the suction cup according to any one of claims 1-10, characterized in that, The method includes: The suction cup body is made of solid silicone. The suction cup body includes a connecting part located at the center and a support part connected to the outer ring of the connecting part. The mounting part and the support part surround to form a cavity, and a mounting surface is formed on the support part. The suction cup body is installed in the suction cup mold, and the suction cup mold forms a first cavity on the mounting surface for injection molding of the sealing ring; Heat the suction cup mold to 100-200 degrees Celsius; Liquid silicone is injected into the first cavity and fills the first cavity completely; The suction cup mold is cooled so that the liquid silicone forms a sealing ring on the mounting surface.

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