A kind of skeleton of sucking disc and sucking disc body

Abstract

This utility model discloses a suction cup frame and suction cup body. The frame includes a body with a receiving portion on its upper surface for connection with an external attachment. Reinforcing portions are provided around the receiving portion, with the thickness of the reinforcing portions gradually decreasing towards the side away from the receiving portion. A fitting portion is provided outside the reinforcing portions, with several circumferentially spaced dividing the fitting portion into several pressure plates. The suction cup uses the frame described above. This frame is encased in an elastic disc to form the suction cup. The frame has sufficient strength to prevent the suction cup from warping upwards when pressed down, while also better transmitting downward pressure to the edge of the elastic disc, further expelling air from the disc and thus making the elastic disc adhere more tightly to the base surface.

Description

Technical Field

[0001] This utility model relates to the field of daily necessities technology, and in particular to a suction cup frame and suction cup body. Background Technology

[0002] Suction cups are household items that attach directly to a base surface by adhering to it and creating a vacuum cavity in the center, utilizing the pressure difference between the inside and outside. They are widely used due to their ease of use; simply adhering to walls, object surfaces, etc., without the need for drilling, makes them convenient to fix and flexible to move. Currently, suction cups on the market include all-soft rubber suction cups and rubber-coated suction cups, with rubber-coated suction cups having stronger adhesion and wider application. Rubber-coated suction cups have a frame covered with a flexible material such as soft rubber, while the frame provides support and transmits pressure to the plate.

[0003] Pressing the suction cup causes it to deform inward, expelling the air inside. The suction cup frame then springs back under the deformation force, pulling the bottom of the cup upward to form a vacuum chamber. A vacuum is created between the center of the bottom surface of the cup and the base surface. The edge of the bottom surface of the cup adheres to the base surface, sealing the vacuum chamber and allowing the cup to adhere to the base surface. During use, it was found that when the suction cup is pressed to adhere, the edge of the suction cup initially seals against the base surface. Further pressing forces the air inside the suction cup to break through the edge and escape. The suction cup frame then rises due to the restoring force, creating a vacuum chamber in the center of the suction cup, allowing it to adhere to the base surface. Therefore, if the suction cup frame is thin, i.e., its strength is low, the air sealed inside the suction cup cannot be squeezed out through the edge. Instead, it is squeezed to the edge, forming an air band. When the suction cup is under load, the air in this air band enters the vacuum chamber, reducing the vacuum level and weakening the suction force. If the suction cup frame is thick, although it can squeeze out the air sealed inside the suction cup, the excessive elasticity of the frame will reduce the contact area between the suction cup and the base surface, making it easy for outside air to enter the vacuum cavity in the middle of the suction cup. This will also reduce the suction force of the suction cup. Utility Model Content

[0004] One of the purposes of this utility model is to provide a suction cup skeleton, which is made into a suction cup by being covered by an elastic disc. The suction cup can squeeze out the air in the middle of the disc, while the skeleton can transmit the downward pressure to the edge of the elastic disc, so that the disc and the base surface are more tightly attached.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A suction cup frame includes a body, with a receiving portion on the upper surface of the body for connecting with an external attachment, and a reinforcing portion around the receiving portion, the thickness of which gradually decreases towards the side away from the receiving portion; a fitting portion is provided on the outside of the reinforcing portion, and a plurality of partition seams are provided circumferentially at intervals along the edge of the fitting portion, the partition seams dividing the fitting portion into a plurality of pressure plates.

[0007] Preferably, the reinforcing part is provided with a plurality of hollowed-out parts spaced circumferentially, the hollowed-out parts are arc-shaped holes that rotate in the same direction, and the length of the hollowed-out parts matches the width of the reinforcing part.

[0008] Preferably, the thickness of the reinforcing portion near the receiving portion is 1.3-3.3 times the thickness of the side of the reinforcing portion away from the receiving portion.

[0009] Preferably, the thickness of the reinforcing part extends outward from 0.8 mm and gradually thins to 0.4 mm.

[0010] Preferably, the wall thickness of the bonding portion gradually decreases towards the side away from the receiving portion, and the wall thickness of the side where the reinforcing portion connects with the bonding portion smoothly transitions towards the bonding portion.

[0011] Preferably, the wall thickness of the bonding portion is uniformly 0.3-0.6 mm.

[0012] Preferably, the resilience of the body is 15-50N.

[0013] Preferably, an annular protrusion is provided at the junction of the reinforcing part and the fitting part, and the annular protrusion is provided on the upper surface of the body; a radially arranged reinforcing rib is connected to the outer side of the annular protrusion, and the end of the reinforcing rib extends to the pressure plate.

[0014] Preferably, the radius of the reinforcing part is not less than 1 / 3 of the radius of the main body.

[0015] Preferably, the radius of the reinforcing part is 2 / 3 to 4 / 5 of the radius of the main body.

[0016] Preferably, the body has a boss in the middle, and the receiving part is disposed on the upper surface of the boss; the hollow part is arranged circumferentially around the boss.

[0017] Preferably, the receiving part is a hollow protrusion, and there are snap-fit ​​edges on opposite sides of the protrusion.

[0018] In the above technical solution, the reinforcing part of the skeleton is designed with a wall thickness that gradually thins from the center outwards. This gives the center of the skeleton a strong resilience, while the resilience at the edges gradually weakens. When the suction cup is pressed down for adsorption, the edge of the suction cup first adheres to the base surface, sealing the inside of the suction cup. As the suction cup is pressed down further, the center of the skeleton has sufficient strength to compress the air sealed inside the cup, forcing it outwards and breaking through the edge of the suction cup to escape from inside. After the pressure on the suction cup is stopped, the skeleton body bounces upwards from the center, restoring its deformation. This creates a vacuum cavity in the center of the suction cup, allowing it to adhere to the base surface. However, the resilience in the center of the suction cup is greater than that at the edges. This results in a vacuum cavity formed by the rebound of the center of the suction cup, while the edges of the suction cup remain attached to the base surface and do not bounce up. Consequently, the area of ​​contact between the suction cup and the base surface is larger, preventing outside air from entering the vacuum cavity and thus extending the adsorption time of the suction cup.

[0019] The reinforcing section has several perforated sections spaced circumferentially. The perforated sections are arc-shaped holes that rotate in the same direction. When the body is coated with glue, the elastic discs on the upper and lower sides of the body are connected together through the perforated sections, which increases the connection strength between the elastic discs and the body. In addition, when the frame body drives the elastic discs to rebound upward, the spiral force of the arc-shaped perforated sections on the elastic discs can offset part of the radial rebound force that drives the discs to gather towards the center, further preventing the elastic discs from rebounding upward and reducing the contact area with the base surface.

[0020] The second objective of this utility model is to provide a suction cup body that includes a skeleton, which makes the suction cup body fit more tightly with the base surface, thereby extending the suction time of the suction cup.

[0021] To achieve the above objectives, the present invention adopts the following technical solution:

[0022] A suction cup body includes a skeleton, on which an elastic disc is covered. The lower surface of the elastic disc forms an adsorption cavity that is deep in the middle and shallow around the edges. The skeleton is the same as the skeleton of the suction cup described in the above-mentioned technical solution.

[0023] Preferably, the middle part of the adsorption cavity is the top surface, and the edge of the top surface gradually extends outward and downward to form the side wall of the adsorption cavity, and the side wall forms a sharp angle with the outer side wall of the elastic disk; the outer side wall of the elastic disk is cylindrical.

[0024] In the above technical solution, the suction cup uses the skeleton described above. The thickness of the skeleton gradually decreases from the middle to the periphery. This ensures that the middle part of the suction cup skeleton has sufficient strength to transmit the extrusion force to the suction cup and expel the air sealed inside the suction cup. At the same time, it can support the elastic disc to adhere more tightly to the base surface. Attached Figure Description

[0025] Figure 1This is a three-dimensional structural diagram of the suction cup skeleton of this utility model;

[0026] Figure 2 This is a top view of the skeleton of the suction cup of this utility model;

[0027] Figure 3 This is a bottom view of the skeleton of the suction cup of this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the suction cup body of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the suction cup body of this utility model from a second angle;

[0030] Figure 6 This is a cross-sectional view of the suction cup body of this utility model;

[0031] Figure 7 This is a schematic diagram of the adsorption effect of Experiment 1 of this utility model.

[0032] In the figure, 1 is the main body; 2 is the receiving part; 21 is the protrusion; 22 is the snap-fit ​​edge; 3 is the reinforcing part; 4 is the fitting part; 5 is the partition seam; 6 is the pressing plate; 7 is the hollow part; 8 is the annular protrusion; 9 is the reinforcing rib; 10 is the boss; 11 is the adsorption cavity; 12 is the top surface; 13 is the side wall; 14 is the outer side wall; 15 is the elastic disc; 16 is the air band; 17 is the vacuum cavity. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] like Figures 1 to 3As shown, the skeleton of a suction cup includes a body 1, which is generally bowl-shaped with a deeper center and shallower edges. The body 1 is coated with adhesive to form a disc. A receiving portion 2 for connecting to an external hanging device is provided on the upper surface of the body 1. The receiving portion 2 extends through the back of the disc for connection to the hanging device, which can be any of a hook, shelf, basket, or storage rack. Reinforcing portions 3 are provided around the receiving portion 2, with a radius not less than 1 / 3 of the radius of the body 1, and the thickness of the reinforcing portion 3 gradually decreases towards the side away from the receiving portion 2. A fitting portion 4 is connected to the outside of the reinforcing portion 3. Several dividing slits 5 are provided circumferentially along the edge of the fitting portion 4 away from the reinforcing portion 3, dividing the fitting portion 4 into several pressure plates 6. When the body is pressed into contact with the base surface and the pressing force is released, the rebound force of the body is 15-50N, preferably 45N. When the suction cup is pressed down for adsorption, the edge of the suction cup first adheres to the base surface, sealing the inside of the suction cup. As the suction cup is pressed further down, the central part of the frame has sufficient strength to compress the air sealed inside the cup, forcing it outwards and breaking through the edge of the suction cup to escape from inside. After pressing the suction cup stops, the frame body returns to its original shape and springs upwards from the center, thus forming a vacuum cavity in the center of the suction cup, which then adheres to the base surface. Because the thickness of the reinforcing part 3 of the body gradually thins towards the side away from the receiving part 2, the rebound force in the center of the suction cup is greater than that at the edge. This rebound in the center of the suction cup forms a vacuum cavity, while the edge of the suction cup remains attached to the base surface and does not spring up. This results in a larger and wider area of ​​contact between the suction cup and the base surface, preventing outside air from entering the vacuum cavity and enhancing the suction force of the suction cup. Furthermore, the partition 5 provides space for the deformation of the edge of the body 1 to make the suction cup more flat and further remove the air inside the suction cup. At the same time, the body 1 transmits the downward pressure to the pressure plate 6, which provides better support for the elastic disc and makes the suction cup better adhere to the base surface.

[0035] The reinforcing section 3 has several circumferentially spaced perforated sections 7, each perforated section 7 being an arc-shaped hole rotating in the same direction. When the body 1 is coated with adhesive, the elastic discs on the upper and lower sides of the body 1 are connected together through the perforated sections 7, increasing the connection strength between the elastic discs and the body 1. Furthermore, when the frame body 1 causes the elastic discs to rebound upwards, the rotating helical force exerted by the arc-shaped perforated sections 7 on the elastic discs can offset part of the radial rebound force that causes the discs to converge towards the center, further preventing the elastic discs from rebounding upwards and reducing the contact area with the base surface. Additionally, during the downward pressing of the suction cup, the rotating helical force exerted by the arc-shaped perforated sections 7 on the elastic discs can also prevent the edges from curling upwards, thus preventing the suction cup from adhering to the base surface. In this embodiment, the length of the perforated section 7 matches the width of the reinforcing section 3.

[0036] In one embodiment, the wall thickness of the reinforcing part 3 near the receiving part 2 is 1.3-3.3 times the wall thickness of the reinforcing part 3 on the side away from the receiving part 2, and preferably the thickness of the reinforcing part 3 gradually decreases from 0.8 mm to 0.4 mm outward.

[0037] In one embodiment, the wall thickness of the fitting portion 4 gradually decreases towards the side away from the receiving portion 2, and the wall thickness of the reinforcing portion 3 on the side connected to the fitting portion 4 smoothly transitions towards the fitting portion 4, that is, the thickness of the reinforcing portion 3 from the side near the receiving portion 2 to the edge of the fitting portion 4 gradually decreases from 0.8 mm to 0.4 mm.

[0038] In one embodiment, the fitting portion 4 surrounds the outer edge of the reinforcing portion 3, and the wall thickness of the fitting portion 4 matches the wall thickness of the reinforcing portion 3 on the side away from the receiving portion. The wall thickness of the fitting portion 4 is uniformly 0.3-0.6 mm, preferably 0.4 mm.

[0039] In a preferred embodiment, an annular protrusion 8 is provided at the junction of the reinforcing part 3 and the fitting part 4. The annular protrusion 8 is spaced from the partition 5 and is located on the upper surface of the body 1. A radially arranged reinforcing rib 9 is connected to the outer side of the annular protrusion 8. The end of the reinforcing rib 9 extends to the pressure plate 6. The annular protrusion 8 evenly transmits the downward pressure on the suction cup to the fitting part 4, making the downward pressure received by the suction cup in all directions more uniform. At the same time, the reinforcing rib 9 transmits the pressure to the pressure plate 6, making the pressure plate 6 fit more tightly to the base surface, further preventing the suction cup skeleton from warping or deforming.

[0040] In a preferred embodiment, the radius of the reinforcing part 3 is 2 / 3 to 4 / 5 of the radius of the body 1, preferably 3 / 4 of the radius of the body 1, and the diameter of the body 1 is 50-55 mm.

[0041] In one embodiment, a boss 10 is provided in the middle of the body 1. The boss 10 is a circular base, or it can be polygonal. The lower surface of the boss 9 is flat or curved and contacts the lower side of the external colloid. A receiving part 2 is provided on the upper surface of the boss 10. The receiving part 2 is a protrusion with a snap-fit ​​structure, that is, it is connected to the external hanger by snap-fit ​​and / or plug-in. Specifically, the receiving part 2 is a hollow protrusion 21. Snap-fit ​​edges 22 are provided on opposite sides of the protrusion 21. The external hanger is fitted onto the protrusion 21 through a slot and snapped onto the snap-fit ​​edges 10 to achieve connection. Hollowed-out parts 7 are arranged circumferentially around the boss 10, and the external elastic disc does not protrude above the upper surface of the boss 10.

[0042] The aforementioned frame needs to wrap around the disk during use. When using it, the disk is attached to the base surface, with the edge of the disk contacting the base surface to seal the air inside the disk. Pressing down on the disk with your hand squeezes the sealed air outward. The frame supports the disk to get closer to the base surface, eventually squeezing all the sealed air out of the suction cup. Then, the middle of the frame rebounds, causing the elastic disk to bounce upward, forming a vacuum cavity in the middle of the suction cup. The side wall of the suction cup is tightly attached to the base surface to seal the vacuum cavity.

[0043] like Figures 4 to 6 As shown, a suction cup body includes a frame 20, on which an elastic disc 15 is covered. The lower surface of the elastic disc 15 forms an adsorption cavity 11 that is deep in the middle and shallow around the edges. The frame 20 is the frame described in the above technical solution, including a body 1. The body 1 is generally bowl-shaped with a deep middle and shallow around the edges. The disc is formed by coating the body 1 with glue. A receiving part 2 for connecting with an external hanging object is provided on the upper surface of the body 1. The receiving part 2 extends through the back of the disc for connecting with the hanging object, which can be any one of hooks, shelves, baskets, or storage racks. A reinforcing part 3 is provided around the receiving part 2. The radius of the reinforcing part 3 is not less than 1 / 3 of the radius of the body 1, and the thickness of the reinforcing part 3 gradually decreases towards the side away from the receiving part 2. A fitting part 4 is connected to the outside of the reinforcing part 3. A number of partition slits 5 are provided circumferentially along the edge of the fitting part 4 away from the reinforcing part 3. The partition slits 5 divide the fitting part 4 into a number of pressure plates 6. When the suction cup is pressed down for adsorption, the edge of the suction cup first adheres to the base surface, sealing the inside of the suction cup. As the suction cup is pressed further down, the central part of the frame has sufficient strength to compress the air sealed inside the cup, forcing it outwards and breaking through the edge of the suction cup to escape from inside. After pressing the suction cup stops, the frame body returns to its original shape and springs upwards from the center, thus forming a vacuum cavity in the center of the suction cup, which then adheres to the base surface. Because the thickness of the reinforcing part 3 of the body gradually thins towards the side away from the receiving part 2, the rebound force in the center of the suction cup is greater than that at the edge. This rebound in the center of the suction cup forms a vacuum cavity, while the edge of the suction cup remains attached to the base surface and does not spring up. This results in a larger and wider area of ​​contact between the suction cup and the base surface, preventing outside air from entering the vacuum cavity and enhancing the suction force of the suction cup. Furthermore, the partition 5 provides space for the deformation of the edge of the body 1 to make the suction cup more flat and further remove the air inside the suction cup. At the same time, the body 1 transmits the downward pressure to the pressure plate 6, which provides better support for the elastic disc and makes the suction cup better adhere to the base surface.

[0044] The reinforcing section 3 has several circumferentially spaced perforated sections 7, each perforated section 7 being an arc-shaped hole rotating in the same direction. When the body 1 is coated with adhesive, the elastic discs on the upper and lower sides of the body 1 are connected together through the perforated sections 7, increasing the connection strength between the elastic discs and the body 1. Furthermore, when the frame body 1 causes the elastic discs to rebound upwards, the rotating helical force exerted by the arc-shaped perforated sections 7 on the elastic discs can offset part of the radial rebound force that causes the discs to converge towards the center, further preventing the elastic discs from rebounding upwards and reducing the contact area with the base surface. Additionally, during the downward pressing of the suction cup, the rotating helical force exerted by the arc-shaped perforated sections 7 on the elastic discs can also prevent the edges from curling upwards, thus preventing the suction cup from adhering to the base surface. In this embodiment, the length of the perforated section 7 matches the width of the reinforcing section 3.

[0045] In a preferred embodiment, the middle part of the adsorption cavity 11 is a top surface 12, which corresponds to the lower surface of the boss 10. The edge of the top surface 12 gradually extends outward and downward to form the side wall 13 of the adsorption cavity. The side wall 13 is an elastic disc body provided on the lower side of the reinforcing part and the bonding part. The outer side wall of the elastic disc body 15 is cylindrical, that is, the suction cup is a cylinder with a thickness of 2.5mm-4.5mm. A sharp angle α is formed between the side wall 13 and the outer side wall 14 of the elastic disc body 15. The sharp angle α fits more tightly with the base surface, avoiding gaps between the edge of the elastic disc body 15 and the base surface, so that air can enter the suction cup.

[0046] Experiment 1: The following three suction cup products with different wall thicknesses were used as examples for adsorption force testing: Product 1 – suction cup frame with a wall thickness of 0.3mm; Product 2 – suction cup frame with a wall thickness of 0.8mm; Product 3 – suction cup frame with a wall thickness gradually decreasing from 0.8mm towards the edge to 0.4mm. The initial contact area between the suction cup and the substrate was observed, and the change in the contact area between the suction cup and the substrate was observed after 4 weeks. The adsorption effect is shown in the attached figure. Figure 7 As shown, the details are as follows:

[0047] Appendix Figure 7 (a) is a schematic diagram of the suction area of ​​the suction cup of product 1 on the base surface. It can be seen that a vacuum cavity 17 is formed in the middle of the suction cup, and an annular air band 16 exists within the contact area between the suction cup and the base surface, meaning that the air sealed inside the suction cup has not been completely expelled; (See attached diagram) Figure 7 (d) is the contact area between the suction cup of product 1 and the base surface after 4 weeks, and it can be seen that the air band 16 is basically connected to the vacuum cavity 17 in the middle of the suction cup.

[0048] Appendix Figure 7 (b) is a schematic diagram of the suction area of ​​product 2's suction cup on the base surface. It can be seen that a vacuum cavity 17 is formed in the center of the suction cup, and the sidewalls of the suction cup are attached to the base surface; (See attached diagram) Figure 7(e) shows the contact area between the suction cup of product 2 and the base surface after 4 weeks. It can be seen that the area of ​​vacuum cavity 17 has increased significantly, while the base area between the suction cup and the base surface has decreased significantly.

[0049] Appendix Figure 7 (c) is a schematic diagram of the suction area of ​​product 3's suction cup on the base surface. It can be seen that a vacuum cavity 17 is formed in the center of the suction cup, and the sidewalls of the suction cup are attached to the base surface; (See attached diagram) Figure 7 (f) shows the contact area between the suction cup of product 3 and the base surface after 4 weeks. It can be seen that there is no significant change in the contact area and the vacuum chamber 17.

[0050] Experiment 2: A rebound force test was conducted on three suction cup frames with different wall thicknesses: Product 1 (0.3mm wall thickness), Product 2 (0.8mm wall thickness), and Product 3 (0.4mm wall thickness gradually decreasing from 0.8mm towards the edge). The frames were fully pressed onto the base surface, and then the upward rebound force of the frames was tested. The specific test results are as follows:

[0051] Resilience 12.5N 40.5N 19.8N

[0052] The embodiments are merely illustrative of the concept and implementation of this utility model and are not intended to limit it. Under the concept of this utility model, the technical solutions without substantial changes are still within the scope of protection.

Claims

1. A suction cup frame, comprising a body, characterized in that, The upper surface of the main body is provided with a receiving part for connecting with an external hanging part. A reinforcing part is provided around the receiving part, and the thickness of the reinforcing part gradually decreases towards the side away from the receiving part. A fitting part is provided on the outside of the reinforcing part, and a number of partition seams are provided circumferentially along the edge of the fitting part, which divides the fitting part into a number of pressure plates.

2. The skeleton of the suction cup as described in claim 1, characterized in that, The reinforcing part is provided with several hollowed-out parts spaced circumferentially. The hollowed-out parts are arc-shaped holes that rotate in the same direction, and the length of the hollowed-out parts matches the width of the reinforcing part.

3. The suction cup frame as described in claim 2, characterized in that, The thickness of the reinforcing part near the receiving part is 1.3-3.3 times the thickness of the side of the reinforcing part away from the receiving part.

4. The skeleton of the suction cup as described in claim 3, characterized in that, The thickness of the reinforcing part extends outward from 0.8 mm and gradually thins to 0.4 mm.

5. The skeleton of the suction cup as described in claim 4, characterized in that, The wall thickness of the bonding portion gradually decreases towards the side away from the receiving portion, and the wall thickness of the side where the reinforcing portion connects with the bonding portion smoothly transitions towards the bonding portion.

6. The skeleton of the suction cup as described in claim 4, characterized in that, The wall thickness of the bonding part is uniformly 0.3-0.6 mm.

7. The skeleton of the suction cup as described in any one of claims 1 to 6, characterized in that, The rebound force of the body is 15-50N.

8. The skeleton of the suction cup as described in any one of claims 1 to 6, characterized in that, An annular protrusion is provided at the junction of the reinforcing part and the fitting part, and the annular protrusion is provided on the upper surface of the body; a radially arranged reinforcing rib is connected to the outer side of the annular protrusion, and the end of the reinforcing rib extends to the pressure plate.

9. The skeleton of the suction cup as described in claim 8, characterized in that, The radius of the reinforcing part is 2 / 3 to 4 / 5 of the radius of the main body.

10. The skeleton of the suction cup as described in claim 2 or 6, characterized in that, The main body has a boss in the middle, and the receiving part is provided on the upper surface of the boss; the hollow part is arranged circumferentially around the boss.

11. The skeleton of the suction cup as described in claim 10, characterized in that, The receiving part is a hollow protrusion, and there are snap-fit ​​edges on opposite sides of the protrusion.

12. A suction cup body, comprising a frame, an elastic disc body covering the frame, wherein the lower surface of the elastic disc body forms an adsorption cavity that is deep in the center and shallow around the edges, characterized in that, The skeleton is the skeleton of the suction cup according to any one of claims 1 to 11.

13. The suction cup body as described in claim 12, characterized in that, The adsorption cavity has a top surface in the middle, and the edge of the top surface gradually extends outward and downward to form the side wall of the adsorption cavity. The side wall forms a sharp angle with the outer wall of the elastic disc. The outer wall of the elastic disc is cylindrical.

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