Sucker structure with lasting adsorption

Abstract

The utility model discloses a sucking disc structure with lasting adsorption, which comprises a sucking disc piece, the sucking disc piece comprises a back plate and a rubber body, the rubber body is tightly combined with one surface of the back plate, the other surface of the back plate is provided with a connecting part, the surface of the rubber body for adsorption is provided with a vacuum area and an adsorption area, the adsorption area is arranged around the vacuum area, the curvature of the vacuum area is X, the curvature of the adsorption area is Y, and X is greater than Y, the back plate is made of a hard material, the rubber body is made of a soft material, the hard back plate can provide supporting and pressing force for the soft rubber body, the bearing capacity and the adsorption capacity of the suction cup can be improved, the rubber body is tightly combined to one face of the back plate, the structure of the suction cup can be simplified on the premise that the adsorption effect is kept, machining is convenient, and the service life of the suction cup is prolonged. The colloid is provided with a vacuum area and an adsorption area, the curvature of the vacuum area is large, so that the vacuum area is good in rebound effect and can generate a continuous vacuum cavity, the curvature of the adsorption area is small, the adsorption area can be fully attached to the wall face, the effective contact area is large, and the bearing performance of the suction cup piece is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sucking disc related technical field, especially a sucking disc structure of adsorption persistence. BACKGROUND

[0002] The general sucking disc part adsorption effect is general, and the bearing capacity is poor, and the adsorption is not persistent, and will fail to fall after using for a period of time, in the prior art, in order to improve the adsorption effect, the sucking disc usually has a framework, a colloid and a pressing plate, the framework is arranged in the colloid, the pressing plate can cooperate with the colloid, and the pressing plate can assist the colloid to adsorb, so as to improve the adsorption effect, but the above structure is relatively complex, the manufacturing cost is relatively high, and the more components, the more affecting the cooperation degree of the components, and further affecting the performance of the product. In addition, the sucking disc cavity is designed as a bowl shape, when the sucking disc adsorbs, the air in the sucking disc cavity is discharged, and a relatively narrow annular adsorption edge is formed at the edge of the sucking disc. After the sucking disc bears, air leakage is easy to occur from the adsorption edge, so that the vacuum cavity of the sucking disc loses vacuum, and the sucking disc falls. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a sucking disc structure of adsorption persistence, which can solve the problem of complex sucking disc structure.

[0004] According to the sucking disc structure of adsorption persistence provided by the utility model, the hard back plate can provide support and pressure for the soft colloid, improve the bearing capacity and adsorption capacity of the sucking disc, the colloid is tightly combined with one side of the back plate, the sucking disc structure is simplified under the premise of maintaining the adsorption effect, and the colloid is provided with a vacuum area and an adsorption area, the curvature of the vacuum area is relatively large, the vacuum area has good rebound effect after the sucking disc is pressed, a continuous vacuum cavity can be formed, the curvature of the adsorption area is relatively small, the adsorption area can be fully attached to the wall surface, the effective contact area is large, and the bearing capacity of the sucking disc part is good.

[0005] According to the sucking disc structure of adsorption persistence provided by the utility model, the hard back plate can provide support and pressure for the soft colloid, improve the bearing capacity and adsorption capacity of the sucking disc, the colloid is tightly combined with one side of the back plate, the sucking disc structure is simplified under the premise of maintaining the adsorption effect, and the colloid is provided with a vacuum area and an adsorption area, the curvature of the vacuum area is relatively large, the vacuum area has good rebound effect after the sucking disc is pressed, a continuous vacuum cavity can be formed, the curvature of the adsorption area is relatively small, the adsorption area can be fully attached to the wall surface, the effective contact area is large, and the bearing capacity of the sucking disc part is good.

[0006] According to some embodiments of the utility model, the vacuum area is a spherical surface.

[0007] According to some embodiments of the utility model, the adsorption area is a conical surface, and the conical surface is inclined towards the back plate in the direction from outside to inside.

[0008] According to some embodiments of the present application, the projection area of the adsorption area along the adsorption direction is A, the projection area of the vacuum area along the adsorption direction is B, and B / (A+B)=0.40-0.45.

[0009] According to some embodiments of the present application, the radius of curvature of the spherical surface is R, and R=15mm-327mm.

[0010] According to some embodiments of the present application, the diameter of the suction cup part is D, and R / D=0.95-1.

[0011] According to some embodiments of the present application, the back plate comprises an inner ring part and an outer ring part, the outer ring part is arranged around the inner ring part, and the inner ring part is provided as an approximately planar structure.

[0012] According to some embodiments of the present application, the outer ring part is provided as a curved surface structure.

[0013] According to some embodiments of the present application, the projection area of the inner ring part along the adsorption direction is M, the projection area of the back plate along the adsorption direction is N, and M:N=0.034-0.36.

[0014] According to some embodiments of the present application, the colloidal substance has a planar part and a curved surface part on the side close to the back plate, the planar part is arranged in the middle of the colloidal substance, the curved surface part is arranged around the planar part, and the spherical surface is arranged opposite to the planar part and part of the curved surface part.

[0015] According to some embodiments of the present application, the back plate can have a pore, the projection area of the pore along the adsorption direction is K, the projection area of the colloidal substance along the adsorption direction is J, and K:J<0.2.

[0016] According to some embodiments of the present application, K=0.

[0017] According to some embodiments of the present application, the back plate and the colloidal substance are tightly combined on one side, and a plurality of grooves and / or a plurality of convex columns are arranged, each groove is arranged around the middle part of the back plate, and the groove is arranged extending from inside to outside.

[0018] According to some embodiments of the present application, the suction cup part is provided as a disc shape.

[0019] According to some embodiments of the present application, the back plate is arranged in a wave shape up and down along the direction around the central axis.

[0020] According to some embodiments of the present application, a hanging part is further included, and the hanging part can be detachably connected with the connecting part.

[0021] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be learned by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and additional aspects and advantages of the present application will become apparent from and will be elucidated with reference to the embodiments described hereinafter with reference to the following drawings, in which:

[0023] Figure 1 Structure sectional view of some embodiments of the suction disc part;

[0024] Figure 2 Structure schematic view of some embodiments of the colloid in the present application;

[0025] Figure 3 Structure schematic view of some embodiments of the colloid in the present application; Figure 2 Schematic view of another direction;

[0026] Figure 4 Structure sectional view of some embodiments of the colloid in the present application; Figure 2 Structure sectional view of some embodiments of the colloid in the present application;

[0027] Figure 5 Size relationship schematic view of some embodiments of the suction disc part in the present application;

[0028] Figure 6 Schematic view of some embodiments of the suction disc part;

[0029] Figure 7 Exploded view of some embodiments of the suction disc part;

[0030] Figure 8 Schematic view of some embodiments of the suction disc part.

[0031] Reference signs:

[0032] Suction disc part 100, colloid 110, vacuum area 111, spherical surface 1111, adsorption area 112, conical surface 1121, flat surface part 113, arc surface part 114, back plate 120, inner ring part 121, outer ring part 122, groove 123, connecting part 124, convex column 125;

[0033] Hanging part 200. DETAILED DESCRIPTION

[0034] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0035] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0036] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] Referring to Figures 1 to 6 According to the adsorbing and lasting suction cup structure of the first aspect of the utility model, the suction cup piece 100 includes a back plate 120 and a glue body 110, one side of the glue body 110 is tightly combined with the back plate 120, the other side of the back plate 120 is provided with a connecting part 124, the side for adsorption of the glue body 110 has a vacuum area 111 and an adsorption area 112, the adsorption area 112 is arranged around the vacuum area 111, the curvature of the vacuum area 111 is X, the curvature of the adsorption area 112 is Y, X>Y, the back plate 120 is made of hard material, and the glue body 110 is made of soft material. The hard back plate 120 can provide support and pressure for the soft glue body 110, improve the bearing capacity and adsorption capacity of the suction cup, the glue body 110 is tightly combined with one side of the back plate 120, which can simplify the suction cup structure and facilitate processing under the premise of maintaining the adsorption effect, and the glue body 110 is provided with the vacuum area 111 and the adsorption area 112, the curvature of the vacuum area 111 is larger, the vacuum area 111 has good rebound effect after pressing the suction cup, can generate a continuous vacuum cavity, and the curvature of the adsorption area 112 is smaller, which is more gentle, can be fully attached to the wall surface, has a large effective contact area and good bearing performance.

[0038] Specifically, the colloid 110 can be connected with the back plate 120 in a close manner, which can be bonding or by secondary injection molding, so that the back plate 120 and the colloid 110 can be made into the suction cup piece 100 by the above connection, which is simple in structure and does not need to be assembled with a complex accessory, the other side of the back plate 120 is provided with a connecting part 124, which can be used to place an article or connect a hook, a supporting rod and other accessories, so as to expand the use of the suction cup piece 100, and the hard back plate 120 can provide support for the soft colloid 110 and improve the bearing capacity of the suction cup piece 100, the back plate 120 can provide a certain pressure covering force for the colloid 110 after being pressed to deform, so as to improve the adsorption performance of the suction cup piece 100, and in actual use, the back plate 120 is pressed to drive the vacuum area 111 to deform and exhaust, and the vacuum area 111 with large curvature can have better rebound effect, so as to form a continuous vacuum cavity, and the contact area with small curvature can be closely attached to the wall surface to maintain an effective sealing distance and an effective contact area, and the suction cup has good bearing capacity.

[0039] It should be noted that through experiments, when the diameter D of the suction cup piece 100 is 30mm, X can be set to 0.01-0.067, and Y can be set to 0.009-0.019, when X=0.034 and Y=0.012, the suction cup piece 100 has the best adsorption effect, when the diameter D of the suction cup piece 100 is 55mm, X can be set to 0.006-0.036, and Y can be set to 0.003-0.013, when X=0.019 and Y=0.006, the suction cup piece 100 has the best adsorption effect, and when the diameter D of the suction cup piece 100 is 100mm, X can be set to 0.003-0.02, and Y can be set to 0.002-0.006, when X=0.01 and Y=0.004, the suction cup piece 100 has the best adsorption effect.

[0040] Referring to Figures 1 to 5 In some embodiments of the present application, the vacuum area 111 is provided as a spherical surface 1111. Specifically, the side of the vacuum area 111 for adsorption is provided as a spherical surface 1111, and the space between the spherical surface 1111 and the adsorbed wall surface is used as a negative pressure area for discharging air, and the adsorption area 112 is substantially in contact with the wall surface, by providing the spherical surface 1111 at the vacuum area 111, the concave degree of the vacuum area 111 can be larger, the colloid 110 is uniformly stressed, air can be easily discharged, and the vacuum area 111 is more easily rebounded after the colloid 110 is pressed and adsorbed, a continuous vacuum cavity can be generated, the adsorption is more reliable, and the adsorption time is more durable.

[0041] Referring to Figure 4In some embodiments of the utility model, the adsorption area 112 is provided as a conical surface 1121 which is inclined towards the back plate 120 in the direction from outside to inside. Specifically, the adsorption area 112 is provided as a conical surface 1121 on the side which is adsorbed to the wall surface, and the conical surface 1121 is inclined towards the back plate 120 in the direction from outside to inside along the radial direction of the back plate 120, so that before adsorption, the outer ring of the adsorption area 112 is in abutment with the wall surface, and after pressing the suction cup piece 100, the inclined conical surface 1121 can be attached to the wall surface, so that the vacuum area 111 can be fully deformed, facilitating exhaust, the conical surface 1121 can be fully attached to the wall surface, and air leakage is not easy, the effective contact area can be improved, the adsorption effect of the suction cup can be improved, and the load bearing capacity of the suction cup can be improved.

[0042] It should be noted that the following Table 1 is the test data of several commonly used specifications of suction cups:

[0043]

[0044]

[0045] Table 1 Test data of several commonly used specifications of suction cups

[0046] Referring to Figure 1 In some embodiments of the utility model, the projection area of the adsorption area 112 along the adsorption direction is A, the projection area of the vacuum area 111 along the adsorption direction is B, and B / (A+B) = 0.40-0.45. Specifically, before pressing and adsorbing the suction cup piece 100, the suction cup piece 100 is placed on the plane to be installed, and the adsorption direction is substantially perpendicular to the plane to be installed. The adsorption area 112 is projected onto the plane to be installed along the adsorption direction, and the projection area is A. Similarly, the projection area of the vacuum area 111 is B. As can be seen from the test data in Table 1, the size ratio of the projection areas of the adsorption area 112 and the vacuum area 111 affects the pressing force, load bearing capacity and adsorption durability of the suction cup. When the diameter of the suction cup piece 100 is fixed, the larger the setting range of the vacuum area 111, the larger B is, and A decreases. After increasing the vacuum area 111, the pressing height increases, and the larger the pressing force required by the user, the larger the adsorption area 112, the smaller the effective contact area between the adsorption area 112 and the plane to be installed, which will result in poor load bearing performance, poor adsorption durability, and difficulty in pressing, which is not convenient for users to use. On the contrary, B is small, and A increases. Although the contact area increases, the required pressing force is small, and the pressing is easy, but the pressing height is small, the rebound is small, which is not conducive to the formation of a vacuum cavity, and will result in a decrease in the adsorption durability of the suction cup piece 100, which cannot meet the use requirements. Through experiments, when B / (A+B) = 0.40-0.45, the required pressing force, load bearing capacity and durability of the suction cup are good. For example, when the diameter of the suction cup is 30mm, A is 3.987cm 2 , and B is 3.077cm2 , B / (A+B) = 0.44, at this time, the maximum load of the suction cup piece 100 is 1.5 kg, the load time is 150 days, the required pressing force is 80N, and each performance can be balanced, which can have good loadability, long adsorption, and moderate pressing force required, which can meet the user's use requirements, and when the diameter of the suction cup is 30mm, A is 4.108cm 2 , B is 2.956cm 2 , B / (A+B) = 0.42, at this time, the maximum load of the suction cup piece 100 is 1.5 kg, the load time is 78 days, the required pressing force is 76N, and each performance is also good.

[0047] With reference to Figure 5 In some embodiments of the present application, the radius of curvature of the spherical surface 1111 is R, R = 15mm-327mm. Specifically, the radius of curvature of the spherical surface 1111 affects the size of the negative pressure area at the vacuum area 111, the smaller the radius of curvature of the spherical surface 1111, the greater the curvature, the greater the degree of concave, the pressing height of the vacuum area 111 increases, the required pressing force increases, and the vacuum area 111 increases, the adsorption area 112 decreases, the effective contact area becomes smaller, which affects the loadability of the suction cup piece 100, and the greater the radius of curvature of the spherical surface 1111, the more gentle the spherical surface 1111, the smaller the required pressing height, although the required pressing force is small, but the vacuum area 111 has poor resilience, which is not conducive to the formation of the vacuum cavity, and the adsorption durability of the suction cup piece 100 is poor, therefore, through tests, R = 15mm-327mm can meet the use requirements.

[0048] With reference to Figure 5In some embodiments of the utility model, the diameter of the suction disc part 100 is D, and R / D = 0.95-1. Specifically, referring to table 1, when B / (A+B) is within the range of 0.40-0.45, the diameter D of the suction disc part 100 is 30mm, the radius of curvature R is 29mm, R / D = 0.97, at this time, the maximum load is 1.5kg, the load time is 150 days, the required pressing force is 80N, the required pressing force for installation is moderate, the area is moderate, the load capacity is good, and the durability is good. When the diameter D of the suction disc part 100 is 55mm, the radius of curvature R is 53.3mm, R / D = 0.97, at this time, the maximum load is 5kg, the load time is 150 days, the required pressing force is 110N, the required pressing force for installation is moderate, the area is moderate, the load capacity is good, and the durability is good. When the diameter D of the suction disc part 100 is 100mm, the radius of curvature R is 97mm, R / D = 0.97, at this time, the maximum load is 10kg, the load time is 150 days, the required pressing force is 110N, the required pressing force for installation is moderate, the area is moderate, the load capacity is good, and the durability is good. It can be seen that when R / D is within the range of 0.95-1, the required pressing force for installation can be reduced, the load capacity is good, and the suction durability is also good.

[0049] In some embodiments of the utility model, the back plate 120 includes an inner ring part 121 and an outer ring part 122, the outer ring part 122 is arranged around the inner ring part 121, the inner ring part 121 is arranged as an approximately planar structure, and the required pressing force is small. The outer ring part 122 is arranged as a curved surface structure, specifically, compared with the structure that the back plate 120 is a whole curved surface, arranging the inner ring part 121 as an approximately planar structure can make the inner ring part 121 be easy to deform, and the outer ring part 122 is not easy to be turned up after pressing.

[0050] It should be noted that when the colloidal body 110 is secondarily injection molded on the back plate 120, the inner ring part 121 of the back plate 120 will be subjected to pressure, so that the inner ring part 121 will form a shrinkage area, and the inner ring part 121 will be molded as an approximately planar structure.

[0051] In some embodiments of the utility model, the projection area of the inner ring part 121 along the suction direction is M, the projection area of the back plate 120 along the suction direction is N, and M:N = 0.034-0.36. Table 2 below is the test data of the 55mm suction disc part 100.

[0052]

[0053] Table 2 test data of the 55mm suction disc

[0054] Specifically, the size of the range provided between the inner ring part 121 and the outer ring part 122 affects the pressing force required by the suction cup piece 100 and the suction effect of the suction cup piece 100. The smaller the projection area M of the inner ring part 121 projected along the suction direction, the more the back plate 120 is arched as a whole, and thus the greater the required pressing force and the larger the negative pressure cavity capable of exhausting. Conversely, the larger M is, the flatter the shape of the back plate 120, the smaller the required pressing force, and the smaller the negative pressure cavity capable of exhausting. In order to balance the pressing force and the suction effect, according to Table 2, when M:N = 0.034, the required pressing force of the suction cup piece 100 is large, but the suction effect of the suction cup piece 100 is good. When M:N = 0.36, the required pressing force of the suction cup piece 100 is small, which is convenient for the user to press, but the suction effect of the suction cup piece 100 is general. When M:N = 0.105, the required pressing force of the suction cup piece 100 is moderate, and the suction effect is moderate, which can facilitate pressing and firm suction, and can meet the use requirements.

[0055] Referring to Figure 1 In some embodiments of the present application, the colloidal body 110 has a flat part 113 and an arc part 114 on one side close to the back plate 120. The flat part 113 is arranged in the middle of the colloidal body 110, and the arc part 114 is arranged around the flat part 113. The spherical surface 1111 is arranged opposite to the flat part 113 and part of the arc part 114. Specifically, the flat part 113 corresponds to the inner ring part 121 of the back plate 120, and the arc part 114 corresponds to the outer ring part 122 of the back plate 120. The range of the spherical surface 1111 on the other side of the colloidal body 110 covers the flat part 113 and part of the arc part 114. The inner ring part 121 of the back plate 120 is easy to deform and can drive the spherical surface 1111 to press towards the wall surface. In order to exhaust as much as possible and deform, the spherical surface 1111 needs to be as close to the wall surface as possible. Therefore, the spherical surface 1111 also needs to deform outward, and the outer ring part 122 corresponding to the arc part 114 can generate an outward deformation force on the spherical surface 1111. Therefore, the above structure can drive the spherical surface 1111 to deform and exhaust sufficiently, and the vacuum area 111 has good resilience, so as to improve the suction effect of the suction cup piece 100.

[0056] In some embodiments of the utility model, backboard 120 can have porosity, the projection area of porosity along adsorption direction is set as K, the projection area of colloid 110 along adsorption direction is set as J, K:J < 0.2. Specifically, the porosity can be set on backboard 120, the deformation ability of backboard 120 can be improved, and the required pressing force is reduced, but because the other side of the adsorption surface of colloid 110 has backboard 120 barrier, backboard 120 can prevent air from penetrating into the adsorbed negative pressure area from colloid 110, when the porosity is set on backboard 120, air can penetrate from the porosity, through test, when the vacuum degree of suction cup piece 100 is-60kPa, K:J is set as 0%, 2%, 4%, 6%, 8%, 12%, 16% respectively, the time required for the vacuum degree of suction cup to drop 10kPa is 78 days, 73 days, 64 days, 45 days, 31 days, 24 days, 22 days respectively, therefore, when K:J < 0.2, the adsorption time of suction cup piece 100 can meet the use demand.

[0057] In some embodiments of the utility model, K = 0, specifically, it can be understood that when K = 0, the face of backboard 120 and colloid 110 close combination is not provided with porosity, at this time, backboard 120 can completely cover the outside surface of colloid 110 barrier, the effect of preventing gas penetration is good, and then the adsorption durability of suction cup can be improved.

[0058] In some embodiments of the utility model, backboard 120 is made of plastic material, and colloid 110 is made of elastic material. Specifically, backboard 120 can be made of plastic material, such as PP, PC, PET and the like, which can have a certain hardness, also has certain elasticity, and also can be injection molded, which is convenient for manufacturing, and colloid 110 can be made of soft and elastic materials such as silica gel and rubber, which has good adsorption effect.

[0059] Referring to Figure 7 In some embodiments of the utility model, the face of backboard 120 and colloid 110 close combination is provided with a plurality of grooves 123 and a plurality of convex columns 125, when only the grooves are set, each groove 123 is arranged around the middle part of backboard 120 at intervals, and the grooves 123 are arranged from inside to outside. Specifically, the grooves 123 can be set as strip-shaped grooves extending from inside to outside, and each groove 123 can be uniformly arranged around the middle part of backboard 120 at intervals, by setting the grooves 123, backboard 120 can be deformed conveniently, the required pressing force of backboard 120 can be reduced, and the close combination of colloid 110 and backboard 120 can be facilitated.

[0060] It should be noted that the back plate 120 on the side close to the glue body 110 can also be provided with the convex column 125 only, and the glue body 110 can wrap the convex column 125, so that the contact area of the glue body 110 and the back plate 120 is increased, the connection between the glue body 110 and the back plate 120 is more firm, and when the suction cup is pressed, the convex column 125 can act on the glue body 110, so that the glue body 110 is uniformly stressed, and the pressing force on the wall surface is improved.

[0061] It is conceivable that the back plate 120 can be provided with the groove 123 and the convex column 125 at the same time.

[0062] With reference to Figures 1 to 7 In some embodiments of the present application, the suction cup 100 is provided in a disc shape. Specifically, the back plate 120 and the glue body 110 can be provided in a circular shape, so that the suction cup 100 is in a disc shape as a whole. It can be understood that the suction cup in a disc shape has good adsorption performance, and each of the above embodiments can be provided in a disc shape.

[0063] With reference to Figure 6 In some embodiments of the present application, the back plate 120 is provided in a wave shape in the direction around the central axis. Specifically, the radial cross section of the back plate 120 can be provided in a wave shape in the direction around the central axis of the back plate 120, so that the back plate 120 can be provided in a wave shape. By providing the structure, the deformation of the back plate 120 can be facilitated, and the strength of the back plate 120 can be improved through the wave structure, so that the pressing force on the glue body 110 can be improved.

[0064] With reference to Figure 8 In some embodiments of the present application, the hanging piece 200 can be detachably connected with the connecting part 124, and the hanging piece 200 can be provided with a connecting part 124 matched with the connecting part 124, so that the hanging piece 200 can be connected with the suction cup 100 through the connecting part 124, and the hanging piece 200 can be used for hanging objects, and the user can first install the hanging piece 200 on the connecting part 124 of the back plate 120, and then press the hanging piece 200 to drive the suction cup 100 to adsorb.

[0065] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A suction cup structure with long-lasting adsorption, characterized in that, The utility model relates to a suction cup (100) comprising a back plate (120) and a rubber body (110) tightly combined with one side of the back plate (120), the other side of the back plate (120) being provided with a connecting part (124), the side for adsorption of the rubber body (110) having a vacuum area (111) and an adsorption area (112), the adsorption area (112) being arranged around the vacuum area (111), the curvature of the vacuum area (111) being X, the curvature of the adsorption area (112) being Y, X > Y, the back plate (120) being made of hard material, and the rubber body (110) being made of soft material. The vacuum area (111) is a spherical surface (1111).

2. A suction cup structure according to claim 1, wherein The adsorption area (112) is a conical surface (1121) inclined towards the back plate (120) from outside to inside.

3. The suction cup structure of claim 1, wherein, The projection area of the adsorption area (112) along the adsorption direction is A, and the projection area of the vacuum area (111) along the adsorption direction is B, B / (A+B) = 0.40-0.

45.

4. A suction lasting pad structure according to one of claims 1 to 3, characterized in that The radius of curvature of the spherical surface (1111) is R, R = 15mm-327mm.

5. The suction-cup structure according to claim 2, wherein The diameter of the suction cup (100) is D, and R / D = 0.95-1.

6. A suction cup structure according to claim 5, wherein The back plate (120) comprises an inner ring part (121) and an outer ring part (122), the outer ring part (122) being arranged around the inner ring part (121), and the inner ring part (121) being an approximately planar structure.

7. The suction-cup structure according to claim 1, wherein The outer ring part (122) is an arc surface structure.

8. A suction cup structure according to claim 7, wherein The projection area of the inner ring part (121) along the adsorption direction is M, and the projection area of the back plate (120) along the adsorption direction is N, M:N = 0.034-0.

36.

9. A suction cup structure according to claim 8, wherein The rubber body (110) has a planar part (113) and an arc surface part (114) close to one side of the back plate (120), the planar part (113) being arranged in the middle of the rubber body (110), the arc surface part (114) being arranged around the planar part (113), and the spherical surface (1111) being arranged opposite to the planar part (113) and part of the arc surface part (114).

10. The suction-cup structure according to claim 2, wherein The back plate (120) can have apertures, the projection area of the apertures along the adsorption direction being K, and the projection area of the rubber body (110) along the adsorption direction being J, K:J < 0.

2.

11. The suction-cup structure according to claim 1, wherein One side of the back plate (120) and the rubber body (110) tightly combined is provided with a plurality of grooves (123) and / or a plurality of convex columns (125), each groove (123) being arranged around the middle of the back plate (120) at intervals and extending from inside to outside.

12. A suction cup structure according to claim 11, wherein K＝0。 13. The suction-cup structure according to claim 1, wherein The suction cup (100) is disc-shaped.

14. The suction-cup structure according to claim 1, wherein The back plate (120) is arranged in a wave shape with ups and downs along the direction around the central axis.

15. The suction-cup structure according to claim 1, wherein The utility model also comprises a hanging part (200) which can be detachably connected with the connecting part (124).

16. The suction-cup structure according to claim 1, wherein ​

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