Sucking disc

Abstract

The utility model discloses an adsorption device, and particularly relates to a suction cup used for being externally connected with an object to solve the problem that an elastic framework of an existing suction cup is difficult to flatten, so that the adsorption force is poor. The suction cup comprises an elastic framework which is in a disc shape formed by a plurality of blades extending in the radial direction, and the adjacent blades are connected through bent ribs; the flexible rubber disc covers the elastic framework and is used for being attached to an adsorbed surface; the height of any blade is gradually reduced from inside to outside in the radial direction of the elastic framework, so that a concave cavity is formed in the lower side of the soft rubber disc, when external force presses the middle of the elastic framework towards the adsorbed face, the multiple blades are far away from one another, the bent ribs are stretched to be in an extending state from a bent state, and the bent ribs are in a closed state. And the concave cavity is compressed to be smaller, so that the soft rubber disc is attached to the adsorbed surface. According to the suction cup, the bent ribs are arranged between the blades of the elastic framework, the elastic framework can be better flattened through structural deformation that the bent ribs are stretched to be in the stretching state from the bent state, and therefore the soft rubber disc wrapping the elastic framework can be better attached to the sucked face; furthermore, more air between the soft rubber disc and the adsorbed surface is discharged, so that a larger pressure difference is generated, and the adsorption force of the suction disc is larger.

Description

Technical Field

[0001] The present application relates to an adsorption device, and in particular to a suction cup for externally loading objects. Background Art

[0002] In daily life, it is often necessary to hang items on walls, windows, and cabinets, such as towel hangers in bathrooms, and cleaning tools such as brooms and mops. Generally, a hook or mounting base is mounted by drilling holes in the relevant plane and using screws, or a mounting base is bonded by glue. However, the method of using screws requires drilling holes in the relevant plane, which damages the plane, and the method of using glue is prone to unstable connection and leaves stains on the relevant plane that are difficult to clean. Therefore, in the prior art, a suction cup is usually used to attach the hook or mounting base. The mount is adsorbed on the relevant plane to avoid damaging the relevant plane or leaving stains on it. This type of suction cup has high requirements for adsorption force. Therefore, an elastic skeleton is provided in the soft rubber disc adsorbed on the relevant plane to improve the shape retention ability of the soft rubber disc. The elastic skeleton and one side of the soft rubber disc are both formed into a conical cavity. When one side of the conical cavity is brought close to the relevant plane and the suction cup is pressed, the elastic skeleton and the soft rubber disc are flattened, and the air in the conical cavity is discharged, so that the suction cup can be broken by atmospheric pressure to be adsorbed on the relevant plane. The magnitude of the adsorption force is related to the amount of air discharged from the conical cavity. When the elastic skeleton in the existing design is pressed from the conical disc body to the flat disc body, the deformation of the conical disc body usually needs to rely on the deformation ability of its material to flatten it. Therefore, for the elastic skeleton that needs to have a certain shape retention ability, the degree of its flattening is limited, resulting in poor adsorption force.

[0003] To this end, it is necessary to improve the form of the existing suction cup skeleton so that it has better flattening ability, so as to provide a suction cup that has a certain shape retention ability and can be fully flattened, thereby improving the adsorption force of the suction cup. Utility Model Content

[0004] The present application aims to solve the problem of elastic skeletons being difficult to flatten in the prior art to a certain extent, and to provide a suction cup with better adsorption force. To this end, the present application provides a suction cup comprising:

[0005] The elastic skeleton is formed into a disk shape consisting of a plurality of blades extending in the radial direction, and adjacent blades are connected by bending ribs;

[0006] A soft rubber disc, coated on the elastic skeleton, for fitting with the adsorbed surface;

[0007] The height of any of the blades gradually decreases from the inside to the outside along the radial direction of the elastic skeleton, so that a concave cavity is formed on the lower side of the soft rubber disc. When an external force presses the middle part of the elastic skeleton toward the adsorbed surface, the blades move away from each other, the bending ribs are stretched from a bent state to an elongated state, and the concave cavity is compressed and becomes smaller so that the soft rubber disc fits the adsorbed surface.

[0008] In some embodiments, in a state without external force, the bending ribs bend and extend along the spacing direction of the adjacent blades, so that when the blades move away from each other, the bending ribs can be stretched.

[0009] In some embodiments, the bending rib is composed of one or more continuous "V"-shaped or "U"-shaped structures.

[0010] In some embodiments, when the bending rib is composed of one or more continuous "V"-shaped or "U"-shaped structures, the opening of the "V"-shaped or "U"-shaped structure of the bending rib faces the inside or outside of the elastic skeleton.

[0011] In some embodiments, the distance between the connection point between the bending rib and the blade and the inner end of the blade is more than half the length of the blade.

[0012] In some embodiments, a short groove is provided on the blade near the outer end, and the distance between the connection between the bending rib and the blade and the inner end of the blade does not exceed the distance between the short groove and the inner end of the blade.

[0013] In some embodiments, the short slot extends along the length direction of the blade to the outer edge of the blade, so that the blades on both sides of the short slot are formed into two fins. When external force presses the middle part of the elastic skeleton, several of the blades move away from each other, and the two fins on each blade also move away from each other.

[0014] In some embodiments, a pressure plate is further included, which is formed into an elastic disc shape that is concave toward the side of the adsorbed surface and abuts against the side of the elastic skeleton facing away from the adsorbed surface. A plurality of protrusions are provided on the blade near the outer end facing away from the adsorbed surface. The distance between the connection between the bending rib and the blade and the inner end of the blade does not exceed the distance between the protrusion and the inner end of the blade. When an external force presses the middle of the pressure plate and then presses the middle of the elastic skeleton, the outer edge of the pressure plate presses the protrusion so that the soft rubber disc fits the adsorbed surface.

[0015] In some embodiments, a short groove is provided on the blade near the outer end, and the short groove extends along the length direction of the blade to the outer edge of the blade, so that the blade on both sides of the short groove is formed into two fins, and the protrusion is provided on the fin.

[0016] In some embodiments, it also includes a connector fixedly connected to the side of the elastic skeleton facing away from the adsorbed surface, and a pressure block detachably matched with the connector. A through hole is provided in the middle of the pressure plate, and the pressure plate is passed through the connector through the through hole and is clamped between the elastic skeleton and the pressure block.

[0017] In some embodiments, an annular step portion is provided on the connector at the connection with the elastic skeleton, and a mating portion that cooperates with the annular step portion is provided on the pressure plate facing the adsorbed surface. When the pressure block is connected to the connector, the mating portion is clamped between the pressure block and the annular step portion.

[0018] In some embodiments, the pressing block includes a cover body and a tubular body connected to the cover body at one end, the connecting body is formed into a columnar shape and fixedly connected to the elastic frame at one end, the tubular body is sleeved on the connecting body, and when the pressing block is connected to the connecting body, the pressure plate is clamped between the annular step portion and the end of the tubular body away from the cover body;

[0019] The tubular body is provided with a slot, and a hook extends from one end of the connector away from the elastic frame, and the pressing block and the connector are connected to the slot via the hook to form a detachable connection;

[0020] Alternatively, the tubular body is provided with an internal thread and the connecting body is provided with an external thread. When the pressure plate is clamped between the annular step portion and the end of the tubular body away from the cover body, the pressure block and the connecting body form a detachable connection through the screw connection between the internal thread and the external thread.

[0021] In some embodiments, an external component is further included, which is sleeved on the tubular body and clamped between the cover body and the pressure plate. An annular pressure rib is provided on the side facing the pressure plate. The projection of the annular pressure rib on the adsorbed surface is located between the bending rib and the projection of the protrusion on the adsorbed surface. When an external force presses the cover body toward the adsorbed surface, the cover body presses the external component and then presses the pressure plate through the annular pressure rib.

[0022] In some embodiments, the external component is formed as a shell with an opening toward the pressure plate, including an elastic cantilever located in the shell of the external component and extending toward the pressure plate. One side of the external component abuts against the cover body, and the other side abuts against the pressure plate through the elastic cantilever.

[0023] In some embodiments, an adjusting member is further included, which is sleeved on the tubular body and clamped between the cover body and the external member. The adjusting member is provided with a plurality of inclined surfaces facing the cover body, and the plurality of inclined surfaces are connected end to end to form a ring sleeved on the tubular body. The pressure block is provided with a slider that abuts against the inclined surface. When the soft rubber disc is attached to the adsorbed surface, the annular pressure rib presses the pressure disc and then presses the protrusion, so that the outer edge of the soft rubber disc is always attached to the adsorbed surface. The adjusting member is rotated, and the slider slides from the bottom end of the inclined surface to the top end of the inclined surface, so that the pressure block is lifted in the direction away from the adsorbed surface, and then the middle part of the elastic skeleton is pulled by pulling the connector, so that the middle part of the soft rubber disc is away from the adsorbed surface.

[0024] In some embodiments, an upper stop portion and a lower stop portion are respectively provided at the top end and the bottom end, and a limit block is provided on the pressure block. When the adjusting member rotates, the limit block is limited between the upper stop portion and the lower stop portion to prevent the slider from falling off the inclined surface.

[0025] In some embodiments, the upper stopper is formed as a protrusion located at and extending out of the top end, and the lower stopper is formed as a vertical surface at the top end of the other inclined surface adjacent to the bottom end of any inclined surface.

[0026] In some embodiments, it also includes a pressure plate that rests against the side of the elastic skeleton facing away from the adsorbed surface, a connector fixedly connected to the side of the elastic skeleton facing away from the adsorbed surface, a pressure block detachably matched with the connector, and an external component. The external component and the pressure plate are sequentially sleeved on the connector in a direction away from the adsorbed surface and clamped between the pressure block and the elastic skeleton. A hook or a hanging seat is connected to the external component for external loading.

[0027] The suction cup of the present application uses pre-bent and deformed bending ribs between the blades of the elastic skeleton, so that the suction cup is pressed on the adsorbed surface. When the blades of the elastic skeleton move away from each other, the bending ribs are stretched from a bent state to a relatively straight and elongated state, thereby making the elastic skeleton flatter, so that the soft rubber disc coated on the elastic skeleton fits better with the adsorbed surface, thereby discharging more air between the soft rubber disc and the adsorbed surface, thereby making the suction cup have greater suction force; at the same time, the blades are connected by means of bending ribs, so that the elastic skeleton can remain as a whole in a natural state without external force, so that the conical cavity on the soft rubber disc remains in a regular state, avoiding the formation of air cavities on the soft rubber disc due to problems such as mutual misalignment of the blades, thereby reducing the adsorption capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic diagram showing the soft rubber disc covered on the elastic frame disclosed in the present application is shown;

[0030] Figure 2 A schematic diagram showing a first viewing angle of the elastic skeleton disclosed in the present application is shown;

[0031] Figure 3 A schematic diagram showing a second viewing angle of the elastic skeleton disclosed in the present application is shown;

[0032] Figure 4 A schematic diagram of a pressure plate disclosed in the present application is shown;

[0033] Figure 5 A schematic diagram of the pressure plate disclosed in the present application pressing on the elastic frame and soft rubber plate assembly is disclosed;

[0034] Figure 6 A schematic diagram of a combination of an elastic skeleton and a connector disclosed in the present application is disclosed;

[0035] Figure 7 A side sectional view of the connector with a pressure plate sleeved on the connector disclosed in the present application is disclosed;

[0036] Figure 8 A schematic diagram of the combined state of the pressing block and the connector disclosed in this application is disclosed;

[0037] Figure 9 A schematic diagram of the compact disclosed in this application is disclosed;

[0038] Figure 10 A schematic diagram of the external component disclosed in this application is disclosed;

[0039] Figure 11 A schematic diagram of the assembly of the external connector and the pressure plate disclosed in the present application is disclosed;

[0040] Figure 12 A schematic diagram of the regulating member disclosed in this application is disclosed;

[0041] Figure 13 Disclosed is an exploded schematic diagram of the suction cup with a hook disclosed in the present application.

[0042] Reference numerals:

[0043] 1. Elastic skeleton; 11. Blade; 111. Short groove; 112. Fin; 12. Bending rib; 13. Protrusion

[0044] 2. Soft plastic disc;

[0045] 3. Pressing plate; 31. Through hole; 32. Fitting portion;

[0046] 4. Connector; 41. Annular step portion; 42. Hook;

[0047] 5. Pressing block; 51. Cover; 52. Tubular body; 53. Slot; 54. Slider; 55. Limiting block;

[0048] 6. External parts; 61. Annular rib; 62. Elastic cantilever;

[0049] 7. Adjusting member; 71. Inclined surface; 711. Bottom end; 712. Top end; 72. Upper stopper; 73. Lower stopper. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0053] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0054] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0055] like Figure 1 、 2 As shown, the present application discloses a suction cup, which includes an elastic skeleton 1 and a soft rubber disc 2. The soft rubber disc 2 has good elasticity and flexibility and can withstand a certain degree of stretching and tearing. Therefore, it is generally made of plastic materials such as TPE, silicone, rubber (vulcanized) and soft PVC. When the soft rubber disc 2 is attached to the adsorbed surface, even if there are slight unevenness on the adsorbed surface, the material deformation ability of the soft rubber disc 2 can be used to fill the small unevenness, thereby improving the adsorption capacity of the suction cup. The soft rubber disc 2 is coated on the elastic skeleton 1. The elastic skeleton 1 needs to provide a certain amount of support for the soft rubber disc 2 so that the soft rubber disc 2 maintains a relatively stable shape to avoid arbitrary deformation of the soft rubber disc 2. Therefore, the material of the elastic skeleton 1 is generally selected from hard PVC, PP, PS, ABS and other plastic materials that are relatively harder than the soft rubber disc 2, or sheets with anti-static, flocking and metal-plated properties.

[0056] In the absence of external force, the combination of the elastic skeleton 1 and the soft rubber disc 2 is used to form a cavity on the side that fits with the adsorbed surface. The cavity is generally conical or dome-shaped, and the outer edge of the cavity is generally circular, or elliptical, chamfered square or other regular shapes. When the suction cup is required to be adsorbed on the adsorbed surface, one side of the cavity is generally facing the adsorbed surface, and then the other side of the suction cup is pressed to expel the air in the cavity. Therefore, a certain air pressure difference is formed between the space between the suction cup and the adsorbed surface and the outside world, and then the atmospheric pressure is used to press the suction cup onto the adsorbed surface to complete the adsorption action. In this process, the suction cup becomes flatter than when it is not adsorbed. Therefore, considering that the deformation ability of the elastic skeleton 1 is worse than that of the soft rubber disc 2, such as Figure 2 、 3As shown, the elastic skeleton 1 is formed into a disc shape consisting of a number of blades 11. The blades 11 extend radially along the elastic skeleton 1, that is, from the middle position of the elastic skeleton 1 to the edge position of the elastic skeleton 1. When the suction cup is pressed against the adsorbed surface, the spacing between the blades 11 increases. The closer to the edge of the elastic skeleton 1, the greater the increase in the spacing between the blades 11. The lengths of the blades 11 can be the same. In this case, the edge of the elastic skeleton 1 is circular. The lengths of the blades 11 can also be different. In this case, the edge of the elastic skeleton 1 can be elliptical, chamfered square, or other shapes. At the same time, the height of the blades 11 gradually decreases from the inside to the outside along the radial direction of the elastic skeleton 1, so that the blades 11 are formed into an arc surface or an inclined surface, thereby forming a spherical or conical cavity on the side of the elastic skeleton 1 facing the adsorbed surface.

[0057] Since the blades 11 are similar to cantilevers extending from the middle of the elastic skeleton 1, any blade 11 may be misaligned with other blades 11 when the external force is uneven, thereby causing the soft rubber disc 2 coated on the elastic skeleton 1 to deviate, making the side of the soft rubber disc 2 facing the adsorbed surface irregular. When the soft rubber disc 2 is pressed on the adsorbed surface, air channels or air cavities are generated, making it impossible for the suction cup to be adsorbed on the adsorbed surface or the adsorption force is poor. Therefore, bending ribs 12 are also provided on adjacent blades 11. The material of the bending ribs 12 and the blades 11 can be the same or different, but the deformation ability of the bending ribs 12 is worse than that of the soft rubber disc 2, so that several blades 11 are connected as a whole through the bending ribs 12, avoiding dislocation of the blades 11 and allowing the elastic skeleton 1 to maintain its shape in the absence of external force. When the suction cup is pressed against the adsorbed surface, the elastic skeleton 1 is compressed and deformed, the distance between adjacent blades 11 increases, and the bending ribs 12 are stretched from a bent state to an elongated state by the two blades 11 connected thereto. Therefore, the projected area of ​​the elastic skeleton 1 on the adsorbed surface increases, and the concave cavity of the suction cup becomes smaller, so that the soft rubber disc 2 fits the adsorbed surface. The bending ribs 12 connecting the blades 11 of the present application are stretched by utilizing the structural deformation ability of the bending ribs 12 during the adsorption process of the suction cup, so that the spacing between the blades 11 is increased more thoroughly, and then when the suction cup is compressed, the side facing the adsorbed surface is closer to a plane, and the space formed between the suction cup and the adsorbed surface is smaller, that is, more air is discharged, so the pressure difference with the outside world is equal, and a greater adsorption force is generated.

[0058] Furthermore, if Figure 3 As shown, the bending ribs 12 extend along the spacing direction of adjacent blades 11, that is, the circumferential bending of the elastic skeleton 1, so that when the blades 11 move away from each other, the bending ribs 12 are stretched in the direction in which the blades 11 move away from each other, so that the bending ribs 12 can be fully stretched, that is, the blades 11 can reach the maximum degree of distance from each other, and thus the soft rubber disc 2 can be fully flattened.

[0059] Of course, the bending ribs 12 can also be extended in other directions. However, regardless of the direction, the bending ribs 12 should have a component in the direction in which the blades 11 move away from each other, so that the bending ribs 12 can maintain a certain tension on the blades 11 in this direction. However, in the design of the suction cup, its own weight should be as small as possible. Therefore, setting the extension direction of the bending ribs 12 in the direction of the spacing between adjacent blades 11 can minimize the volume of the bending ribs 12 and thus reduce the suction cup's own weight, thereby avoiding a reduction in the suction cup's adsorption force.

[0060] Specifically, if Figure 3 As shown, the shape of the bending rib 12 can be a "V" shape, and the two arms of the "V" shape are respectively connected to a blade 11. When the two blades 11 connected by a bending rib 12 move away from each other, the opening of the "V" shape expands, so that the length of the bending rib 12 in the direction in which the blades 11 move away from each other increases, that is, the bending rib 12 is stretched to an elongated state. The bending rib 12 of this shape utilizes the micro-deformation of the material at the connection between the two arms of the "V" shape to form a larger structural deformation of the bending rib 12, resulting in good deformation ability and deformation recovery ability, thereby improving the life of the elastic skeleton 1. Of course, the bending rib 12 can also be set to a "U" shape, that is, the connection between the two arms of the bending rib 12 is smoothly transitioned, so that the bottom of the entire "U" shape is slightly deformed when the two adjacent blades 11 move away from each other, thereby avoiding the stress caused by the sharp corners at the connection between the two arms of the "V" shape, and further improving the reliability of the bending rib 12.

[0061] Furthermore, the opening of the "V"-shaped or "U"-shaped structure of the bending rib 11 is toward the inside or outside of the elastic frame 1. Since the bottom of the "V"-shaped or "U"-shaped structure of the bending rib 11 is a protrusion relative to the connection between the bending rib 11 and the two blades 11, when the opening of the "V"-shaped or "U"-shaped structure is toward the inside of the elastic frame 1, that is, the bottom of the "V"-shaped or "U"-shaped structure is closer to the edge of the elastic frame 1 than the connection between the bending rib 11 and the two blades 11, when the bending rib 11 is stretched and extended, the two arms of the entire bending rib 11 will drive the part of the soft rubber disc 2 located at the connection between the bending rib 11 and the blades 11 to expand, so that the soft rubber disc The disk 2 has better flatness when adsorbed on the adsorbed surface; when the opening of the "V"-shaped or "U"-shaped structure is facing the outside of the elastic skeleton 1, that is, the bottom of the "V"-shaped or "U"-shaped structure is farther away from the edge of the elastic skeleton 1 than the connection between the bending rib 11 and the two blades 11, so the bending rib 11 can be as close to the edge of the elastic skeleton 1 as possible while remaining within the edge of the elastic skeleton 1 as possible, so that the middle and edge parts of all blades 11 close to the elastic skeleton 1 can be connected, thereby making the integrity of the elastic skeleton 1 better, avoiding the possible misalignment of the blade 11 with other blades 11 when the external force is uneven, thereby reducing the adsorption capacity.

[0062] In some embodiments, when the distance between two adjacent blades 11 in their natural state is large, in order to keep the bending rib 12 in a smaller volume and have better deformation ability, the bending rib 12 can be composed of multiple "V"-shaped or "U"-shaped structures, that is, forming the shape of a planar spring, so that the length difference between the bending state and the stretched state of the bending rib 12 is maximized, and the number of "V"-shaped or "U"-shaped structures can be adjusted according to the material deformation ability of the bending rib 12 and the distance between the two adjacent blades 11.

[0063] In some embodiments, since the blades 11 extend radially along the elastic skeleton 1, that is, the inner ends of the blades 11 are located at the center of the elastic skeleton 1 and the inner ends of all the blades 11 are connected as one, the outer ends of the blades 11 are formed as the outer edges of the elastic skeleton 1. Therefore, in order to connect the outer ends of all the blades 11 as one through the bending ribs 12, and reduce the possibility of the blades 11 being dislocated with other blades 11 when the external force is uneven, the distance between the connection between the bending ribs 12 and the two adjacent blades 11 and the inner end of the blade 11 should be greater than half the length of the blade 11, that is, the connection between the bending ribs 12 and the two adjacent blades 11 is located on the blade 11 within half the length range close to the outside of the elastic skeleton 1, so that the inner and outer ends of all the blades 11 can be connected as one, thereby making the elastic skeleton 1 have better integrity.

[0064] In some embodiments, a short groove 111 is provided on the blade 11 near the outer end. Since the blade 11 extends from the middle to the outside along the radial direction of the elastic skeleton 1, the closer to the outer end, the larger the circumferential width of the blade 11. Therefore, if the blade 11 is curved, the greater the deformation amplitude required to deform into a plane. Therefore, the larger circumferential width here is difficult to be compressed into a completely flat plane, making it difficult for the side of the soft rubber disc 2 that is in contact with the adsorbed surface to form a flat plane. The provision of the short groove 111 makes the width of the blade 11 near the outer end substantially smaller, thereby reducing the difficulty of deformation at the outer end of the blade 11. At the same time, the short groove 111 is formed by removing part of the material on the blade 11, which can also reduce the overall weight of the suction cup, thereby reducing the influence of the suction cup's own weight on the adsorption effect. At the same time, since one purpose of setting the bending rib 12 is to connect the blade 11 as a whole, and the purpose of setting the short groove 111 is to reduce the integrity of the wider part of the blade 11, the short groove 111 should be as close as possible to the outer end of the blade 11 or extend to the outer edge of the blade 11, and be radially staggered with the bending rib 12 in the blade 11, that is, the bending rib 12 is closer to the inner end of the blade 11 than the short groove 111.

[0065] Further, if Figure 3As shown, the short slot 111 extends along the length direction of the blade 11 to the outer edge of the blade 11, so that the short slot 111 divides the outer end of the blade 11 into two parts, forming two fins 112 located on both sides of the short slot 111. When the external force presses the middle of the elastic skeleton 2, the outer end of the blade 11, that is, the part of the soft rubber disc 2 corresponding to the two fins 112, first contacts the adsorbed surface. Therefore, during the external force application process, the two fins 112 are always subjected to force. As the elastic skeleton 2 becomes continuously flattened, just like the adjacent blades 11 move away from each other, the two fins 112 will also gradually move away. Therefore, the short slot 111 extends to the outer edge of the blade 11, further improving the deformation ability of the outer end of the blade 11, making the elastic skeleton 1 more easily deformed by compression.

[0066] In some embodiments, as Figure 4 As shown, the suction cup also includes a pressure plate 3 for compressing the elastic skeleton 1 coated with the soft rubber disc 2, that is, external force applies pressure to the elastic skeleton 1 coated with the soft rubber disc 2 by compressing the pressure plate 3, and the pressure plate 3 is formed into an elastic disc shape that is concave toward the side of the adsorbed surface, that is, it is similar to the overall shape of the elastic skeleton 1, so that when the middle of the pressure plate 3 is pressed, the middle of the pressure plate 3 transmits the pressure to the middle of the elastic skeleton 1, and then the top of the conical cavity of the suction cup is subjected to the maximum pressure, and the outer edge of the pressure plate 3 always presses the outer edge of the elastic skeleton 1, so that the outer edge of the soft rubber disc 2 can always maintain a close fit with the adsorbed surface, so that when the air between the suction cup and the adsorbed surface is discharged, a negative pressure cavity is formed between the suction cup and the adsorbed surface to ensure the adsorption force of the suction cup. At the same time, since when the suction cup is compressed, the elastic frame 1 and the soft rubber disc 2 are deformed more greatly relative to the pressure plate 3, the combination of the elastic frame 1 and the soft rubber disc 2 will slide relative to the pressure plate 3 in the radial direction of the elastic frame 1. Once the pressure plate 3 contacts the soft rubber disc 2, since the soft rubber disc 2 is very easy to deform, the friction between the pressure plate 3 and the soft rubber disc 2 may cause the soft rubber disc 2 to twist or deform abnormally, thereby affecting the sealing effect. Therefore, a plurality of protrusions 13 are provided on the side of the blade 11 near the outer end away from the adsorbed surface, and the protrusions 13 expose the soft rubber disc 2. Outside the rubber disc 2, when external force presses the pressure plate 3 to press it tightly against the combination of the elastic skeleton 1 and the soft rubber disc 2, the outer edge of the pressure plate 3 presses the protrusion 13. Even when the combination of the elastic skeleton 1 and the soft rubber disc 2 slides relative to the pressure plate 3 in the radial direction of the elastic skeleton 1, since the pressure plate 3 and the soft rubber disc 2 bracket do not contact each other, and the protrusion 13 with relatively high hardness presses against the pressure plate 3, the sliding resistance between the two is much smaller than the sliding resistance when the pressure plate 3 and the soft rubber disc 2 are in direct contact, thereby preventing the pressure plate 3 from causing the soft rubber disc 2 to twist or other abnormal deformation.

[0067] Furthermore, in order to ensure that the edge of the suction cup fits the surface to be adsorbed to the greatest extent, Figure 2As shown, the protrusion 13 is located on the two fins 112 formed by the short groove 111 dividing the blade 11, that is, a protrusion 13 is provided on each fin 112 on the outer edge of the elastic frame 1, as shown in FIG. Figure 5 As shown, the pressure plate 3 presses on the protrusion 13, thereby ensuring that the edge of the elastic skeleton 1 is evenly compressed, so as to press the soft rubber plate 2 onto the adsorbed surface to ensure its sealing.

[0068] In some embodiments, in order to smoothly install and fix the pressure plate 3, as shown in FIG. Figure 4 、 6 As shown in Figures 7 and 8, a connector 4 is provided on the suction cup, one end of the connector 4 is fixed to the side of the elastic skeleton 1 facing away from the adsorption surface, and the other end is detachably connected to a pressure block 5. The pressure plate 3 is passed through the connector 4 through a through hole 31 provided thereon, and is pressed against the elastic skeleton 1 through the pressure block 5, so that the pressure plate 3 can be smoothly assembled with other components and maintain a relatively fixed state, so that when an external force presses the suction cup, the pressure plate 3 can be pressed against the edge of the elastic skeleton 1, and then the edge of the soft rubber disc 2 is pressed against the adsorbed surface, thereby ensuring good sealing and the integrity between the various components of the suction cup.

[0069] Specifically, since the elastic frame 1 is formed into a dish shape with a high middle portion and a low outer edge, and the shape of the pressure plate 3 is similar to that of the elastic frame 1, and it presses on the protrusion 13 on the elastic frame 1, Figure 4 、 6 As shown in Figures 7 and 8, an annular step portion 41 is provided at the connection between the connector 1 and the elastic frame 1, and a matching portion 32 is provided on the pressure plate 3 to abut against the annular step portion 41. When the pressure block 5 is installed on the connector 4, the matching portion 32 of the pressure plate 3 abuts against the annular step portion 41, and the side facing away from the matching portion 32 abuts against the pressure block 5, that is, the pressure block 5 and the annular step portion 41 clamp the pressure plate 3, so that the elastic frame 1, the soft rubber disc 2, the pressure plate 3, the connector 4, and the pressure block 5 form a whole. When an external force presses the pressure block 5 When the suction cup is sucked, the pressure block 5 presses the middle part of the pressure plate 3, and then presses the elastic skeleton 1 through the connector 4, and finally presses the middle part of the soft rubber disc 2, making it close to the adsorbed surface. At this time, the pressure plate 3 also presses the protrusion 13 on the elastic skeleton 1, so that the edge of the soft rubber disc 2 is kept in close contact with the adsorbed surface. Therefore, the air between the soft rubber disc 2 and the adsorbed surface is discharged, thereby forming a negative pressure cavity between the suction cup and the adsorbed surface, so that the suction cup is pressed against the adsorbed surface by atmospheric pressure, so that it can be adsorbed on the adsorbed surface.

[0070] Specifically, if Figure 9 As described above, the pressing block 5 is configured as a combination of a cover 51 and a tubular body 52. ​​The cover 51 is disc-shaped, and the tubular body 52 is a hollow tube, one end of which is fixedly connected to the cover 51. Figure 6 、 7As shown, the connector 4 is formed into a columnar shape so that the tubular body 52 can be sleeved on the connector 4, so as to use the annular plane on the end of the tubular body 52 away from the cover body 51 to press the pressure plate 3 onto the annular step portion 41. This design of the pressure block 5 is conducive to the connection between the pressure block 5 and the connector 4, and can achieve the purpose of pressing the pressure plate 3. The way in which the pressure block 5 and the connector 4 are detachably connected can be selected according to needs, such as snap-on, screw-on, tight fit, etc., that is, as long as it can be achieved that the pressure block 5 can be connected to the connector 4 along the direction of pressing the pressure plate 3. When the connection between the pressure block 5 and the connector 4 is snap-on, such as Figure 9 As shown, the pressing block 5 is provided with a slot 53, as shown in FIG. Figure 6 As shown, a hook 42 is provided on the connecting body 4, and the hook 42 is formed as a protrusion at the end of the cantilever extending toward the pressure block 5. There are two hooks 42 symmetrically provided, and correspondingly, there are also two slots 53. When the connecting body 4 is inserted into the tubular body 52, the hook 42 hooks the side wall of the slot 53, thereby connecting the pressure block 5 and the connecting body 4 as a whole. Obviously, the distance between the hook 42 and the annular step portion 41 is equal to the distance between the slot 53 and the end of the tubular body 52 away from the cover body 51. Therefore, when the hook 42 is engaged with the slot 53, the annular plane of the tubular body 52 away from the cover body 51 just presses the pressure plate 3 that is in contact with the annular step portion 42. When the connection between the pressure block 5 and the connector 4 is threaded, an internal thread can be set in the tubular body 52, and an external thread can be set on the outside of the connector 4, and then the pressure block 5 can be screwed onto the connector 4 so that the two are connected as one. This connection method makes the distance between the pressure block 5 and the annular step portion 42 adjustable to accommodate pressure plates 3 of different thicknesses or provide different clamping degrees to the pressure plate 3 through the pressure block 5 and the annular step portion 42 during assembly, thereby improving the adaptability of the product.

[0071] The suction cup provided by the present invention is mainly used to hang items, such as connecting hooks to hang brooms, mops, kitchen utensils and other household tools, or using multiple suction cups to connect a carrier to hang towels or carry other items. For this purpose, in some embodiments, such as Figure 10 、 11 As shown, the suction cup of the present invention also includes an external component 6, which is sleeved on the tubular body 52 and clamped between the cover body 51 and the pressure plate 3. An annular pressure rib 61 is provided on the external component 6 facing the pressure plate 3. The external component 6 presses the pressure plate 3 through the annular pressure rib 61 so that the pressure plate 3 presses the elastic skeleton 1.

[0072] In the above method, the annular pressure rib 61 is used to transmit external pressure to the pressure plate 3, and finally press on the soft rubber disc 2. In this process, it is necessary to press the edge position of the soft rubber disc 2, that is, by pressing the protrusion 13 on the elastic skeleton 1, so that the edge of the soft rubber disc 2 is kept in close fit with the adsorbed surface. Therefore, the position where the annular pressure rib 61 presses the pressure plate 3 should not be located outside the position where the pressure plate 3 presses the protrusion 13, and the pressure plate 3 will become relatively flat when it is pressed. Therefore, the distance between the protrusion 13 and the center of the pressure plate 13 will be slightly offset outward when the pressure plate 3 is pressed. Therefore, the projection of the annular pressure rib 61 on the adsorbed surface should be located inside the projection of the protrusion 13 on the adsorbed surface. In addition, since the pressure plate 3 compresses the protrusion 13 so that the blades 11 of the elastic frame 1 are separated from each other, the pressure plate 3 cannot directly press on the blades 11, nor can it press on the elastic frame 1 through the soft rubber disc 2 wrapped on the elastic frame 1. Therefore, in order to avoid the annular pressure rib 61 pressing the pressure plate 3, so that the pressure plate 3 is in direct contact with the soft rubber disc 2 or the elastic frame 1, affecting the structural deformation of the bending rib 12, the projection of the annular pressure rib 61 on the adsorbed surface should be located outside the projection of the bending rib 12 on the adsorbed surface, so as to ensure the structural deformation ability of the bending rib 12 and ultimately ensure a good adsorption effect. Therefore, Figure 11 As shown, the projection of the annular pressing rib 61 on the adsorbed surface is located between the projections of the bending rib 12 and the protrusion 13 on the adsorbed surface.

[0073] Furthermore, the external component 6 is formed into a shell with an opening facing the pressure plate 3. When the suction cup is not adsorbed on the adsorbed surface, at least a portion of the pressure plate 3 or the soft rubber plate 2 can be exposed from the shell. When the suction cup is adsorbed on the adsorbed surface, the external component 6 is at least covered outside the pressure plate 3, that is, the pressure plate 3 no longer exposes the shell of the external component 6, so that when observed from the outside, the parts on the suction cup are exposed to the external component 6 as little as possible, thereby improving the aesthetics of the product. Therefore, the external component 6 needs to have a certain amount of movable margin relative to the pressure plate 3 in the direction perpendicular to the adsorbed surface. At the same time, the external component 6 needs to be kept as stable as possible so that it will not shake randomly when hanging items. Therefore, Figure 10 、 11As shown, an elastic cantilever 62 extends from the shell of the external component 6 toward one side of the pressure plate 3, so that one side of the external component 6 abuts against the cover body 51, and the other side abuts against the pressure plate 3 through the elastic cantilever 62. Through the deformation of the elastic cantilever 62, the external component 6 can be displaced relative to the pressure plate 3, and the elastic force of the elastic cantilever 62 keeps the external component 6 relatively fixed in a position perpendicular to the direction of the adsorbed surface. Preferably, three elastic cantilevers 62 are provided, and are evenly distributed along the circumference of the external component 6 so that the external component 6 does not deflect. The length direction of the elastic cantilever 62 projected on the adsorbed surface is preferably along the radial direction of the elastic skeleton 1, and the outer end of the elastic cantilever 62 is connected to the shell of the external component 6, so that when the elastic cantilever 62 is compressed and deformed to a certain extent, its inner end can abut on the connector 1 or the protrusion in the middle of the pressure plate 3, thereby limiting the range of motion of the external component 6.

[0074] In some embodiments, in order to facilitate the adjustment of the suction force of the suction cup, as Figure 12 、 13 As shown, an adjusting member 7 is also provided, which is sleeved on the tubular body 52 of the pressing block 5 and clamped on the cover body 51 and the external member 6. The adjusting member 7 is provided with a plurality of inclined surfaces 71 on the side facing the cover body 51, and the plurality of inclined surfaces 71 are connected end to end to form a ring sleeved on the tubular body 52. ​​Different parts of the inclined surface 71 are at different distances from the external member 6. By pressing the pressing block 5 on different positions on the inclined surface 71, the middle part of the elastic skeleton 1 is stretched to different degrees perpendicular to the direction of the adsorbed surface through the connector 4 connected to the pressing block 5, thereby pulling the middle part of the soft rubber disc 2 to adjust the size of the cavity between the suction cup and the adsorbed surface, thereby adjusting the adsorption force of the suction cup. Figure 9As shown, the pressing block 5 is provided with a slider 54, which abuts against the inclined surface 71 and can slide along the inclined surface 71. When the suction cup needs to be adsorbed on the adsorbed surface and the size of the adsorption force needs to be adjusted, the soft rubber disc 2 is first attached to the adsorbed surface, and the cover body 51 is pressed, and then the connecting body 1 is pressed through the tubular body 52 to compress the middle part of the elastic skeleton 1, so that the middle part of the elastic skeleton 1 drives the middle part of the soft rubber disc 2 close to the adsorbed surface. At this time, the cover body 51 also presses the external component 6 through the compression adjustment member 7, so that the annular pressure rib 61 of the external component 6 presses the outer edge of the pressure plate 3, and then presses the protrusion 13 on the elastic skeleton 1, and finally makes the outer edge of the soft rubber disc 2 closely fit the adsorbed surface, so that the soft rubber disc 2 and A negative pressure cavity is formed between the adsorbed surfaces so that the suction cup is adsorbed to the adsorbed surfaces. In order to make the adsorption force stronger, the adjusting member 7 is rotated at this time, and the slider 53 on the pressing block 5 has the bottom end 711 on the inclined surface 71 sliding toward the top end 712. Therefore, the adjusting member 7 drives the pressing block 5 to move away from the adsorbed surface, so that the pressing block 5 pulls the connecting member 4, and then pulls the middle part of the soft rubber disc 2 away from the adsorbed surface through the elastic skeleton 1, while the edge of the soft rubber disc 2 is always pressed tightly against the adsorbed surface, and the outside air cannot enter the negative pressure cavity. Therefore, the volume of the negative pressure cavity between the soft rubber disc 2 and the adsorbed surface increases, so that the pressure difference between the negative pressure cavity and the outside world is further increased, so that the suction cup can be adsorbed more tightly on the adsorbed surface.

[0075] Furthermore, in order to prevent the slider 54 from sliding out of the inclined surface 71, a stop structure is provided between the pressing block 5 and the adjusting key 7, specifically, as shown in FIG. Figure 9 、 12 As shown, an upper stopper 72 is provided at the top end 712 of the inclined surface 71, a lower stopper 73 is provided at the bottom end 711, and a limit block 55 is provided on the pressing block 5. When the adjusting member 7 rotates, the limit block 55 is limited between the upper stopper 72 and the lower stopper 73, that is, the limit block 55 can only move within the range between the upper stopper 72 and the lower stopper 73. The limit block 55 is also provided on the pressing block 5, thereby limiting the relative rotation range of the pressing block 5 and the adjusting member 7. To simplify the product structure, the upper stopper 72 is provided at the top end 712 and is formed as a protrusion extending from the top end 712. The lower stopper 73 is formed as a vertical surface at the top end 712 of the other inclined surface 71 adjacent to the bottom end 711 of any inclined surface 71. In this case, the limit block 55 and the slider 54 are positioned at the same position in the radial direction of the cover body 51, or the two are formed as one body, so as to simplify the overall structure.

[0076] In some embodiments, the elastic skeleton 1, the pressure plate 3, the external component 6, and the pressure block 5 are arranged in sequence along the direction away from the adsorbed surface, and the elastic skeleton 1 is fixed to one end of the connector 4, the pressure plate 3 and the external component 6 are both sleeved on the connector 4, and the pressure block 5 is connected to the other end of the connector 4, so that the pressure block 5 can press the pressure plate 3 and the external component 6 on the elastic skeleton 1, thereby connecting the various components into a whole. In addition to pressing the pressure plate 3, the external component 6 has another function, such as Figure 13 The connector 6 may be provided with a hook to hang objects, and a mounting may be provided on the connector 6 to form a hanger or storage rack using multiple suction cups. Therefore, in order to improve the applicability of the suction cups, both the hook and the mounting may be detachably connected to the connector 6, making the suction cups a universal platform for hanging or storing objects.

Claims

1. A suction cup, characterized in that: include: The elastic skeleton (1) is formed into a disk shape consisting of a plurality of blades (11) extending in the radial direction, and adjacent blades (11) are connected by bending ribs (12); A soft rubber disc (2) is coated on the elastic skeleton (1) and is used to fit the adsorbed surface; The height of any of the blades (11) gradually decreases from the inside to the outside along the radial direction of the elastic skeleton (1), so that a concave cavity is formed on the lower side of the soft rubber disc (2). When an external force presses the middle part of the elastic skeleton (1) toward the adsorbed surface, the blades (11) move away from each other, the bending ribs (12) are stretched from a bent state to an elongated state, and the concave cavity is compressed and becomes smaller so that the soft rubber disc (2) fits the adsorbed surface.

2. The suction cup according to claim 1, wherein In a state without external force, the bending ribs (12) bend and extend along the spacing direction of adjacent blades (11), so that when the blades (11) move away from each other, the bending ribs (12) can be stretched.

3. The suction cup according to claim 2, characterized in that The bending rib (12) is composed of one or more continuous "V"-shaped or "U"-shaped structures.

4. The suction cup according to claim 3, characterized in that When the bending rib (12) is composed of one or more continuous "V"-shaped or "U"-shaped structures, the opening of the "V"-shaped or "U"-shaped structure of the bending rib (12) faces the inside or outside of the elastic skeleton (1).

5. The suction cup according to claim 1, wherein The distance between the connection point between the bending rib (12) and the blade (11) and the inner end of the blade (11) exceeds half the length of the blade (11).

6. The suction cup according to any one of claims 1 to 5, characterized in that: A short slot (111) is provided on the blade (11) near the outer end, and the distance between the connection between the bending rib (12) and the blade (11) and the inner end of the blade (11) does not exceed the distance between the short slot (111) and the inner end of the blade (11).

7. The suction cup according to claim 6, characterized in that The short slot (111) extends along the length direction of the blade (11) to the outer edge of the blade (11), so that the blade (11) on both sides of the short slot (111) is formed into two fins (112). When an external force presses the middle part of the elastic skeleton (1), the plurality of blades (11) move away from each other, and the two fins (112) on each blade (11) also move away from each other.

8. The suction cup according to any one of claims 1 to 5 and 7, characterized in that: It also includes a pressure plate (3) formed into an elastic disc shape that is concave toward the side of the adsorbed surface and abuts against the side of the elastic skeleton (1) facing away from the adsorbed surface. A plurality of protrusions (13) are provided on the blade (11) near the outer end and away from the adsorbed surface. The distance between the connection between the bending rib (12) and the blade (11) and the inner end of the blade (11) does not exceed the distance between the protrusion (13) and the inner end of the blade (11). When an external force presses the middle of the pressure plate (3) and then presses the middle of the elastic skeleton (1), the outer edge of the pressure plate (3) presses the protrusion (13) so that the soft rubber disc (2) is attached to the adsorbed surface.

9. The suction cup according to claim 8, wherein When a short slot (111) is provided on the blade (11) near the outer end, and the short slot (111) extends along the length direction of the blade (11) to the outer edge of the blade (11), so that the blade (11) on both sides of the short slot (111) is formed into two fins (112), the protrusion (13) is provided on the fin (112).

10. The suction cup according to claim 9, characterized in that It also includes a connector (4) fixedly connected to the side of the elastic skeleton (1) facing away from the adsorbed surface, and a pressure block (5) detachably matched with the connector (4); a through hole (31) is provided in the middle of the pressure plate (3); the pressure plate (3) is passed through the connector (4) through the through hole (31) and is clamped between the elastic skeleton (1) and the pressure block (5).

11. The suction cup according to claim 10, wherein An annular step portion (41) is provided on the connector (4) at the connection with the elastic skeleton (1), and a matching portion (32) matching with the annular step portion (41) is provided on the pressure plate (3) on the side facing the adsorbed surface. When the pressure block (5) is connected to the connector (4), the matching portion (32) is clamped between the pressure block (5) and the annular step portion (41).

12. The suction cup according to claim 11, wherein The pressing block (5) includes a cover body (51) and a tubular body (52) connected to the cover body (51) at one end. The connecting body (4) is formed into a columnar shape and fixedly connected to the elastic skeleton (1) at one end. The tubular body (52) is sleeved on the connecting body (4). When the pressing block (5) is connected to the connecting body (4), the pressure plate (3) is clamped between the annular step portion (41) and the end of the tubular body (52) away from the cover body (51). The tubular body (52) is provided with a slot (53), and a hook (42) extends from one end of the connector (4) away from the elastic frame (1), and the pressing block (5) and the connector (4) are connected to the slot (53) via the hook (42) to form a detachable connection; Alternatively, the tubular body (52) is provided with an internal thread, and the connecting body (4) is provided with an external thread. When the pressure plate (3) is clamped between the annular step portion (41) and the end of the tubular body (52) away from the cover body (51), the pressure block (5) and the connecting body (4) are detachably connected by screwing the internal thread and the external thread.

13. The suction cup according to claim 12, wherein: The invention also includes an external component (6) which is sleeved on the tubular body (52) and clamped between the cover body (51) and the pressure plate (3). An annular pressure rib (61) is provided on the side facing the pressure plate (3). The projection of the annular pressure rib (61) on the adsorbed surface is located between the projection of the bending rib (12) and the projection of the protrusion (13) on the adsorbed surface. When an external force presses the cover body (51) toward the adsorbed surface, the cover body (51) presses the external component (6) and then presses the pressure plate (3) through the annular pressure rib (61).

14. The suction cup according to claim 13, wherein The external component (6) is formed into a shell with an opening toward the pressure plate (3), and includes an elastic cantilever (62) located in the shell of the external component (6) and extending toward the pressure plate (3). One side of the external component (6) abuts against the cover body (51), and the other side abuts against the pressure plate (3) through the elastic cantilever (62).

15. The suction cup according to claim 14, wherein The invention also includes an adjusting member (7) which is sleeved on the tubular body (52) and clamped between the cover body (51) and the external member (6). The adjusting member (7) is provided with a plurality of inclined surfaces (71) on the side facing the cover body (51). The plurality of inclined surfaces (71) are connected end to end to form a ring which is sleeved on the tubular body (52). The pressing block (5) is provided with a slider (54) which abuts against the inclined surface (71). When the soft rubber disc (2) is attached to the adsorbed surface, the annular pressure rib (61) is pressed by the pressure. The pressure plate (3) is tightened and the protrusion (13) is pressed, so that the outer edge of the soft rubber disk (2) is always in contact with the adsorbed surface. The adjusting member (7) is rotated, and the slider (54) slides from the bottom end (711) of the inclined surface (71) to the top end (712) of the inclined surface (71), so that the pressure block (5) is lifted in a direction away from the adsorbed surface. Then, the middle part of the elastic skeleton (1) is pulled by pulling the connecting body (4), so that the middle part of the soft rubber disk (2) is away from the adsorbed surface.

16. The suction cup according to claim 15, wherein An upper stopper (72) and a lower stopper (73) are respectively provided at the top end (712) and the bottom end (711), and a limit block (55) is provided on the pressing block (5). When the adjusting member (7) rotates, the limit block (55) is limited between the upper stopper (72) and the lower stopper (73) to prevent the slider (54) from falling off the inclined surface (71).

17. The suction cup according to claim 16, wherein The upper stop portion (72) is formed as a protrusion located at the top end (712) and extending out of the top end (712), and the lower stop portion (73) is formed as a vertical surface at the top end (712) of the other inclined surface (71) adjacent to the bottom end (711) of any inclined surface (71).

18. The suction cup according to any one of claims 1-5, 7, 9-17, characterized in that: The invention also includes a pressure plate (3) resting against the side of the elastic skeleton (1) facing away from the adsorbed surface, a connector (4) fixedly connected to the side of the elastic skeleton (1) facing away from the adsorbed surface, a pressure block (5) detachably matched with the connector (4), and an external component (6). The external component (6) and the pressure plate (3) are sequentially sleeved on the connector (4) in a direction away from the adsorbed surface and are clamped between the pressure block (5) and the elastic skeleton (1). A hook or a hanging seat is connected to the external component (6) for external loading.

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