Sucker structure with small pressing force

Abstract

The utility model discloses a sucking disc structure with small pressing force, which comprises a sucking disc, the sucking disc 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 back plate is a hard material part, the rubber body is a soft material part, the back plate comprises an inner ring part and an outer ring part, and the outer ring part is arranged around the inner ring part. The curvature of the inner ring part is X, the curvature of the outer ring part is Y, and Y is larger than X. The rubber body is tightly combined with one face of the back plate, the hard back plate can assist the soft rubber body in adsorption and can improve the adsorption effect, the inner ring part of the back plate is arranged to be gentle, namely similar to a flat plate shape, the outer ring part of the back plate is arranged to be bent, when the back plate is pressed, force is applied to the middle of the inner ring part, and the inner ring part can deform easily. The required applied force can be reduced, the stress of the colloid is better, and the adsorption effect of the suction cup can be improved on the premise that the pressing force is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sucking disc relates to a sucking disc structure with small pressing force. BACKGROUND

[0002] The sucking disc generally is equipped with sucking disc cover, backplate and sucking disc rubber surface, the sucking disc rubber surface covers in the backplate, the backplate is located in the sucking disc cover, the user can drive the backplate to press to the wall and deformation through the pressing structure, thereby can drive the sucking disc rubber surface to adsorb on the wall, in the prior art, the backplate of sucking disc is generally set as cambered surface structure, make the backplate required pressing force degree is bigger, inconvenient for the user operation. SUMMARY

[0003] The utility model discloses at least one of the prior art problems, and for this purpose, the utility model provides a sucking disc structure with small pressing force, which can solve the problem of large pressing force required for the sucking disc.

[0004] A sucking disc structure with small pressing force according to the first aspect of the utility model, comprising: a sucking disc, the sucking disc includes a backplate and a rubber body, one side of the backplate is tightly combined with the rubber body, the backplate is provided with a connecting part on the other side, the backplate is made of hard material, the rubber body is made of soft material, the backplate includes an inner ring part and an outer ring part, the outer ring part is arranged around the inner ring part, the curvature of the inner ring part is X, and the curvature of the outer ring part is Y, Y>X.

[0005] The rubber body is tightly combined with one side of the backplate, the hard backplate can assist the soft rubber body in adsorption, and the adsorption effect can be improved. Since Y>X, the inner ring part of the backplate is relatively flat, and the outer ring part is relatively curved. When the backplate is pressed, force is applied to the middle part of the inner ring part, and the inner ring part can easily deform to reduce the required force. Meanwhile, the outer ring part can press and cover the rubber body for adsorption when the inner ring part deforms, the rubber body is better stressed, and the adsorption effect of the sucking disc can be improved under the premise of reducing the pressing force.

[0006] According to some embodiments of the utility model, the inner ring part is provided as an approximately planar structure, and the outer ring part is provided as a cambered surface structure.

[0007] According to some embodiments of the utility model, the backplate further includes a first thickness part and a second thickness part, the middle part of the backplate is provided as the first thickness part, the second thickness part is arranged around the first thickness part, and the thickness of the second thickness part is greater than that of the first thickness part.

[0008] According to some embodiments of the utility model, the thickness of the second thickness part gradually increases in the direction from inside to outside.

[0009] According to some embodiments of the present application, the distance from the outer side of the second thickness part to the outer side of the first thickness part in the projection direction is A, and A = 2mm-12mm.

[0010] According to some embodiments of the present application, the projection area of the inner ring part in the projection direction is D, and the projection area of the back plate in the projection direction is L, and D / L = 0.034-0.36.

[0011] According to some embodiments of the present application, the curvature radius of the arc surface structure is R, and R = 12.5mm-50mm.

[0012] According to some embodiments of the present application, the back plate can have a pore, and the projection area of the pore in the projection direction is K, and the projection area of the colloid in the projection direction is J, and K:J < 0.2.

[0013] According to some embodiments of the present application, K = 0.

[0014] According to some embodiments of the present application, the side of the back plate and the colloid closely combined is provided with a plurality of grooves and / or convex columns, each groove is arranged at intervals around the middle part of the back plate, and the groove is arranged extending from inside to outside.

[0015] According to some embodiments of the present application, the suction disc is disc-shaped.

[0016] According to some embodiments of the present application, the back plate is arranged in a wave shape up and down in the direction around the central axis.

[0017] The 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 understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a sectional view of some back plate embodiments in the present application;

[0020] Figure 2 is a structural schematic view of some back plate embodiments in the present application;

[0021] Figure 3 is Figure 2 is a schematic view of another direction;

[0022] Figure 4A sectional view of some backboard embodiments of the utility model;

[0023] Figure 5 A size schematic view of some backboard embodiments of the utility model;

[0024] Figure 6 A structure schematic view of some suction cup embodiments;

[0025] Figure 7 An exploded structure view of some suction cup embodiments.

[0026] Reference signs:

[0027] Backboard 110, inner ring part 111, outer ring part 112, first thickness part 113, second thickness part 114, connecting part 115, groove 116, convex column 117, glue body 120. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "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, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the features limited by "first", "second" can be explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] In the description of the utility model, it is understood that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication 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.

[0031] Referring to Figures 1 to 4 , according to the first aspect of the utility model discloses a kind of sucking disc structure of small pressing force, including sucking disc, sucking disc includes backplate 110 and glue body 120, glue body 120 is closely combined with one side of backplate 110, backplate 110 another side is equipped with connecting portion 115, backplate 110 is equipped as hard material piece, glue body 120 is equipped as soft material piece, backplate 110 includes inner ring portion 111 and outer ring portion 112, outer ring portion 112 is arranged around inner ring portion 111, the curvature of inner ring portion 111 is X, the curvature of outer ring portion 112 is Y, Y>X.Glue body 120 is closely combined in one side of backplate 110, hard backplate 110 can assist soft glue body 120 adsorption, can improve adsorption effect, and by setting the inner ring portion 111 of backplate 110 as relatively gentle, i.e. approximately as flat plate, while outer ring portion 112 can be set relatively curved, when pressing backplate 110, it will force the middle part of inner ring portion 111, and inner ring portion 111 can easily deform, can reduce the size of required force, while inner ring portion 111 can drive the bending structure of outer ring portion 112 to press and cover glue body 120 adsorption with smaller deformation when deforming, glue body 120 is better stressed, can reduce the degree of pressing under the premise of improving the adsorption effect of sucking disc.

[0032] Specifically, glue body 120 can be closely combined with the side of backplate 110 for adsorption, the closely combined mode can be bonding or by secondary injection molding connection, so backplate 110 and glue body 120 only need the above-mentioned combined connection to be made into sucking disc, simple structure, without assembling complex accessories, backplate 110 another side is equipped with connecting portion 115, connecting portion 115 can be used to place articles or be used to connect hooks, support rods and other accessories, so as to expand the use of sucking disc, and hard backplate 110 can provide support for soft glue body 120, to improve the load-bearing performance of sucking disc, backplate 110 can provide certain pressure covering force to glue body 120 after deformation, thereby improving the adsorption performance of sucking disc, and the curvature of inner ring portion 111 of backplate 110 is small, relatively gentle, while the curvature of outer ring portion 112 is large, the structure is relatively curved, so that backplate 110 can form a roughly bowl-shaped structure, and it can be understood that when pressing the sucking disc, inner ring portion 111 is pressed, and the gentle structure of inner ring portion 111 is more easily deformed than the curved and arched structure, thereby reducing the degree of pressing required, after inner ring portion 111 is pressed, outer ring portion 112 can generate force towards glue body 120 under the action of deformation of inner ring portion 111, thereby generating further pressure covering force to glue body 120, thereby improving the adsorption effect of sucking disc, and after inner ring portion 111 is easily deformed, outer ring portion 112 is not easy to turn over when pressing.

[0033] Referring to Figures 1 to 4In some embodiments of the utility model, the inner ring part 111 is provided with an approximate plane structure, and the outer ring part 112 is provided with a curved surface structure. Specifically, the inner ring part 111 can be directly provided with an approximate plane structure, which is convenient for manufacturing, and the approximate plane structure is more convenient for pressing and has better deformation capacity.

[0034] It should be noted that when the gel 120 is formed by secondary injection molding on the back plate 110, the inner ring part 111 of the back plate 110 will be subjected to pressure, so that the inner ring part 111 will form a shrinkage zone, and the inner ring part 111 will be formed into an approximate plane structure.

[0035] Referring to Figure 4 In some embodiments of the utility model, the back plate 110 further comprises a first thickness part 113 and a second thickness part 114, the middle part of the back plate 110 is provided with the first thickness part 113, the second thickness part 114 is arranged around the first thickness part 113, and the thickness of the second thickness part 114 is greater than that of the first thickness part 113. Specifically, the thickness of the middle part of the back plate 110 and the thickness of the outer ring part can be different, so that the first thickness part 113 and the second thickness part 114 can be divided in the back plate 110. In order to facilitate the pressing of the back plate 110, the thickness of the first thickness part 113 in the middle part can be set smaller, and the second thickness part 114 of the outer ring part can be set thicker, so as to improve the structural strength and the pressing force of the gel 120, meet the load bearing requirement, so that the suction cup can reduce the pressing force and maintain certain load bearing performance.

[0036] Referring to Figure 4 In some embodiments of the utility model, the thickness of the second thickness part 114 gradually increases in the direction from inside to outside. Specifically, the second thickness part 114 can gradually thicken along the radial direction of the back plate 110 and in the direction from inside to outside. By gradually increasing the thickness of the second thickness part 114, the back plate 110 is not easy to form a stress concentration area, and the back plate 110 is more uniform in stress when pressed, the adsorption is more durable, and the structure of thin inside and thick outside is easy to press and deform. Further, the suction cup can further improve the adsorption effect under the premise of reducing the required pressing force.

[0037] It is conceivable that the second thickness part 114 can also be provided with a stepped structure, and the thickness can gradually increase in the direction from inside to outside in a stepped structure. The specific number of layers is not limited here. The stepped structure can not only meet the above technical effects, but also make the gel 120 and the back plate 110 more firmly combined.

[0038] Referring to Figure 5In some embodiments of the utility model, the distance of the second thickness part 114 outside to the first thickness part 113 outside is projected along the adsorption direction and is set as A, A = 2mm-12mm. Specifically, the greater the range of the second thickness part 114, the better the adsorption effect, but the greater the required pressing force, which is inconvenient for the user to press. Through experiments, when A is set in the above range, it can be convenient for the user to press, and a certain adsorption effect can be provided, which can meet the use requirement.

[0039] Referring to Figure 5 In some embodiments of the utility model, the projection area of the inner ring part 111 projected along the adsorption direction is set as D, the projection area of the back plate 110 projected along the adsorption direction is set as L, and D / L = 0.034-0.36. It should be noted that Table 1 below is the test data of the suction cup with a diameter of 55mm:

[0040]

[0041] Table 1 Test data of the suction cup with a diameter of 55mm

[0042] Specifically, the size of the range between the inner ring part 111 and the outer ring part 112 affects the pressing force required by the suction cup and the adsorption effect of the suction cup. The smaller the projection area D of the inner ring part 111 projected along the adsorption direction, the more the back plate 110 is arched as a whole, so the required pressing force is greater, and the negative pressure cavity capable of exhausting is greater. On the contrary, when D is greater, the shape of the back plate 110 is flatter, the required pressing force is smaller, and the negative pressure cavity capable of exhausting is smaller. In order to balance the pressing force and the adsorption effect, according to Table 1, when D:L = 0.034, the required pressing force of the suction cup is greater, but the adsorption effect of the suction cup is good. When D:L = 0.36, the required pressing force of the suction cup is very small, which is convenient for the user to press, but the adsorption effect of the suction cup is general. When D:L = 0.105, the required pressing force of the suction cup is moderate, the adsorption effect is moderate, it can be convenient to press and can be firmly adsorbed, and it can meet the use requirement.

[0043] Referring to Figure 5In some embodiments of the utility model, curvature radius of cambered surface structure is set as R, R = 12.5mm-50mm. Specifically, curvature radius R of cambered surface structure is related to pressing force and adsorption effect of suction cup, when cambered surface structure is more curved, namely curvature radius R is smaller, although the pressure of colloid 120 is good, but the pressing force required by user is large, and it is inconvenient for user to press, and when cambered surface structure is more gentle, namely curvature radius R is larger, although the pressing force required is small, but the adsorption effect of suction cup is poor, through test, when curvature radius R of cambered surface structure is set as 50mm, the adsorption effect of suction cup is general, but the pressing force required is minimum, when R is set as 12.5mm, the pressing force required is larger, but the adsorption effect of suction cup is good, and when R is set as 38.9, the pressing force required is small, and the adsorption effect of suction cup is good, and suction cup can facilitate user to press and can be adsorbed firmly.

[0044] In some embodiments of the utility model, backboard 110 can have aperture, the projection area of aperture along adsorption direction is set as K, the projection area of colloid 120 along adsorption direction is set as J, K: J < 0.2, specifically, the number and shape of aperture are not limited here, by setting aperture, the deformation ability of backboard 110 can be improved, and the pressing force required is reduced, but because the other side of adsorption surface of colloid 120 has backboard 110 barrier, backboard 110 can prevent air from penetrating into adsorbed negative pressure area from colloid 120, when backboard 110 is provided with aperture, air can penetrate from aperture, through test, when the vacuum degree of suction cup is -60kPa, when K: J is equal to 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 can meet the use demand.

[0045] It is conceivable that aperture can be provided with strip shape or circular shape and the like, and aperture can be provided with multiple, and each aperture can be arranged at intervals around the middle part of backboard 110.

[0046] In some embodiments of the utility model, K = 0, specifically, it can be understood that when K = 0, aperture is not provided on the surface of backboard 110 and colloid 120 close combination, at this time, backboard 110 can completely cover and block the outside surface of colloid 120, and the effect of preventing gas penetration is good, and then the adsorption durability of suction cup can be improved.

[0047] Refer to Figure 7In some embodiments of the utility model, the backboard 110 and the colloid 120 are closely combined on one side which is provided with a plurality of grooves 116 and a plurality of convex columns 117, when only the grooves 116 are provided, the grooves 116 are arranged around the middle part of the backboard 110 at intervals, and the grooves 116 extend from inside to outside. Specifically, the grooves 116 can be provided as strip-shaped grooves extending from inside to outside, and the grooves 116 can be evenly arranged around the middle part of the backboard 110 at intervals. By providing the grooves 116, the backboard 110 can be easily deformed, the pressing force required by the backboard 110 can be reduced, and the close combination of the colloid 120 and the backboard 110 can be facilitated.

[0048] It should be noted that the side of the backboard 110 and the colloid 120 closely combined can also be provided only with the convex columns 117, the colloid 120 can wrap the convex columns 117, the contact surface of the colloid 120 and the backboard 110 can be increased, the connection of the colloid 120 and the backboard 110 can be more firm, and when the suction cup is pressed, the convex columns 117 can act on the colloid 120, the colloid 120 can be uniformly stressed, and the pressing force on the wall surface can be improved.

[0049] It can be conceived that the backboard 110 can also be provided with the grooves 116 and the convex columns 117 at the same time.

[0050] It can be conceived that the grooves 116 can also extend to the outer edge of the backboard 110, and the shape of the grooves 116 is not limited to the above-mentioned embodiments, and can also be square, circular and the like.

[0051] Referring to Figures 1 to 7 In some embodiments of the utility model, the suction cup is provided in a disc shape. Specifically, the outer contour of the backboard 110 and the colloid 120 can both be circular, so that the suction cup as a whole is in a disc shape. It can be understood that the suction cup in a disc shape has good adsorption performance, and each of the above-mentioned embodiments can be provided as a suction cup in a disc shape.

[0052] Referring to Figure 6 In some embodiments of the utility model, the backboard 110 is arranged in a wave shape in the direction around the central axis thereof. Specifically, the radial cross section of the backboard 110 can be arranged in a wave shape in the direction around the central axis of the backboard 110, so that the backboard 110 can be deformed, the strength of the backboard 110 can be improved through the wave structure, and the pressing force on the colloid 120 can be improved.

[0053] It should be noted that the back plate 110 is made of plastic material, and the glue body 120 is made of elastic material. Specifically, the back plate 110 can be made of plastic material such as PP, PC, PET, etc., which can have a certain hardness, a certain elasticity, and can be injection molded for easy manufacturing. The glue body 120 can be made of soft and elastic materials such as silica gel and rubber, which has good adsorption effect.

[0054] In the description of the present specification, 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 present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present application have been shown and described, those skilled 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 present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A suction cup structure requiring low pressing force, characterized in that, The utility model relates to a suction cup, including: Suction cup, the suction cup includes backboard (110) and colloid (120), the colloid (120) is closely combined with one side of backboard (110), the other side of backboard (110) is equipped with connecting portion (115), backboard (110) is equipped with hard material piece, colloid (120) is equipped with soft material piece, backboard (110) includes inner ring portion (111) and outer ring portion (112), the outer ring portion (112) is arranged around the inner ring portion (111), the curvature of inner ring portion (111) is X, the curvature of outer ring portion (112) is Y, Y>X.

2. The suction cup structure according to claim 1, wherein The inner ring portion (111) is provided as an approximately planar structure, and the outer ring portion (112) is provided as a curved surface structure.

3. The suction plate structure according to claim 1 or 2, wherein The backboard (110) further includes a first thickness portion (113) and a second thickness portion (114), the middle portion of the backboard (110) is provided as the first thickness portion (113), the second thickness portion (114) is arranged around the first thickness portion (113), and the thickness of the second thickness portion (114) is greater than the thickness of the first thickness portion (113).

4. The suction cup structure according to claim 3, wherein The thickness of the second thickness portion (114) gradually increases in the direction from inside to outside.

5. The suction cup structure according to claim 4, wherein The distance from the outside of the second thickness portion (114) to the outside of the first thickness portion (113) projected in the adsorption direction is A, and A=2mm-12mm.

6. The suction cup structure according to claim 2, wherein The projection area of the inner ring portion (111) projected in the adsorption direction is D, the projection area of the backboard (110) projected in the adsorption direction is L, and D / L=0.034-0.

36.

7. The suction cup structure according to claim 2, wherein The radius of curvature of the curved surface structure is R, and R=12.5mm-50mm.

8. The suction cup structure according to claim 1, wherein The backboard (110) can have an aperture, the projection area of the aperture projected in the adsorption direction is K, the projection area of the colloid (120) projected in the adsorption direction is J, and K:J<0.

2.

9. The suction cup structure according to claim 8, wherein K=0.

10. The suction cup structure according to claim 1, wherein The side of the backboard (110) closely combined with the colloid (120) is provided with a plurality of grooves (116) and / or a plurality of convex columns (117), each of the grooves (116) is arranged at intervals around the middle portion of the backboard (110), and the grooves (116) extend in the direction from inside to outside.

11. The suction cup structure according to claim 1, wherein The suction cup is provided as a disc.

12. The suction cup structure according to claim 1, wherein The backboard (110) is arranged in a wave shape in the up-and-down direction around the central axis thereof.

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