WO2021088406A1 - Strong hanging suction cup - Google Patents

Abstract

A strong hanging suction cup, comprising a suction cup main body (1) and a suction cup pressing cover (2); an adjustment screw rod (4) is mounted in the suction cup main body (1), a through-hole (3) corresponding to the position of the adjustment screw rod (4) is provided on the suction cup pressing cover (2), the adjustment screw rod (4) passes through the through hole (3) and is connected to an external screwing device, the suction cup main body (1) is provided with a suction portion (11) located in the middle and pressing portions (12) provided on edges, convex portions (8) are provided on the pressing portions (12), recessed sealing grooves (7) are formed at the bottom end of the outermost convex portion (8) and extend outward, upwardly protruding sealing rings (5) are provided at the outermost edges of the sealing grooves (7), and correspondingly pressing cover skirt portions (22) are provided with concave portions (9) corresponding to the convex portions (8) of the pressing portions (12) of the suction cup main body (1), and downwardly extending pressing cover outer rings (10) are provided at the outermost edges of the concave portions (9) of the pressing cover skirt portions (22). The strong hanging suction cup is convenient to use, has a wide application range, is easy to mount and dismount, has good sealing performance, has a strong suction performance, and can continuously bear the load up to 17 kilograms for 7 days or more when being used on a common ceramic tile for a heavy object test.

Description

A powerful pendant sucker Technical field

The application relates to a suction cup with a powerful pendant, which is used to connect various pendants in bathrooms and kitchens with walls, and belongs to a daily necessities.

Background technique

In daily life, in order to install pendants on the wall, such as bath towel bars, hooks, soap boxes, racks, towel racks, etc., one way is to use the punching mode, first drill a hole in the wall, and then nail it in Expansion screw holes, then use expansion screws to connect the pendant to the wall; the advantages of this installation method are: the installation is stable and not easy to fall off, the load-bearing capacity is large, and it can meet the placement of heavier objects; the disadvantages are: During the drilling process, the tiles may be cracked or broken, which affects the overall aesthetics; and the installation procedure is troublesome and requires professional tools, which is not easy for female installers to operate.

The other method is to use the punch-free mode. There are two commonly used now: one is viscose and the other is a suction cup; viscose pendants are easy to use, but have a small bearing capacity and cannot withstand the sun and rain. , It is easy to fall off after a long time of use, and it is not easy to remove when the pendant needs to be shifted. It is difficult to clean the adhesive on the wall after forcibly removing it.

The suction cup type pendant is easy to install and easy to use, and it can be fixed only by the suction force of the negative pressure formed inside the suction cup without any adhesive. However, many of the existing suction cup pendants are too simple in design or unreasonable in structure. The suction cups have poor sealing performance, low adsorption force, insufficient adhesion, and small bearing capacity. They can only carry lighter weight pendants. When the hanging weight is larger, Or for large pendants, either they cannot stick directly because of too much gravity, or they stick but have no endurance, and will fall off the wall after a period of installation.

In the existing design, the common defects are mainly reflected in the following two points: 1. The suction cup body is not equipped with a sealing structure, or the sealing structure position is defective, resulting in poor sealing of the outer circumference of the suction cup, between the suction cup body and between the suction cup and the wall The fit between the surfaces is not tight enough, and the vacuum state inside the suction cup is unstable. During use, air gradually leaks into the suction cup, and the adsorption force gradually fails, causing it to fall off; 2. The suction cup glands are mostly semi-circular or arc-shaped When it is in the adsorption state, the inner cavity forms a conical or trapezoidal cylinder, and the volume formed by adsorbing the inner cavity on the adsorption surface of the same area is small, so the vacuum degree is also small, the negative pressure strength is small, and the suction force of the suction cup is not strong. The connection with the wall is unstable and easy to deform. When the weight of the suspended object is too heavy, a downward sloping pull will be generated on the suction cup, which makes the suction cup easy to deform and fail, causing the suspended object to fall off.

In order to solve the above-mentioned defects in the prior art, it is necessary to design a powerful pendant suction cup with good sealing, strong adsorption, long-lasting adsorption, convenient opening and closing, simple displacement, and long service life to meet people's needs.

This application was born.

Summary of the invention

In view of the above-mentioned defects in the prior art, the purpose of this application is to provide a powerful pendant suction cup, which is convenient to use, has a wide application range, is simple to install and disassemble, has good sealing, strong adsorption, and long-lasting adsorption.

In order to achieve the above-mentioned purpose, the technical solution adopted in this application is:

A powerful pendant suction cup, comprising a suction cup main body, a suction cup gland, and an adjusting screw. It is characterized in that the adjustment screw is installed in the suction cup main body, and the suction cup gland is provided with a through hole corresponding to the position of the adjusting screw, and the adjusting screw passes through the through hole. The hole is connected with the external screwing device. The suction cup main body is provided with a suction part in the middle and a pressing part at the edge. At least one convex part is provided on the pressing part, and the position of the convex part is pressed by the pressing part. The outer ends of the parts are arranged inward one by one, and the bottom end of the outermost convex part extends outward to form a concave sealing groove. The outermost edge of the sealing groove is provided with an upwardly protruding sealing ring. Correspondingly, the suction cup gland is divided into two parts. The gland cylinder is located in the middle and the gland skirt is arranged on the periphery of the cylinder. The gland cylinder is set in a straight cylinder shape, and the gland cylinder extends outward to form a gland skirt perpendicular to it On the side part, the gland skirt is provided with a concave part corresponding to the convex part of the pressing part of the suction cup body, and the outermost edge of the concave part of the gland skirt is provided with a gland outer ring extending downward.

The further settings of this application are:

An upwardly protruding limit snap ring is provided on the suction part of the suction cup body, and the size of the internal cavity of the gland cylinder body is just enough to limit the limit snap ring in the cylinder.

further:

The adjusting screw is an integrated adjusting screw, which includes a screw base and a screw part. The screw base is pre-embedded in the suction cup main body, and the screw part passes through a through hole to be connected to an external tightening device.

Two convex parts are provided on the pressing part.

An upwardly protruding limit snap ring is provided on the suction part of the suction cup body, and the size of the internal cavity of the gland cylinder body is just enough to limit the limit snap ring in the cylinder.

The pressing part of the suction cup main body is designed to be thinner, and the sealing groove and the sealing ring of the pressing part are further thinned.

Preferably, the pressing portion is thinned to 2-4 mm, and the sealing ring is thinned to 1-2 mm.

Further preferably, the pressing portion is reduced to 3 mm, and the sealing ring is reduced to 1.5 mm.

The beneficial effects of the present invention are:

1. The gland cylinder of the present invention is set in a straight cylindrical shape, which is more effective than the traditional conical cylinder, effectively increasing the area of the bottom plane of the cylinder, that is, effectively increasing the contact area between the suction cup and the inside of the cylinder, that is, increasing the unit area Compared with the traditional conical or trapezoidal cylinder, the volume of the upper gland cylinder has more than doubled the contact surface in this design, thereby increasing the space for the shrinkage and deformation of the suction part, that is, increasing the vacuum of the suction cup. The force of negative pressure per unit area is increased, and the adsorption performance of the sucker is greatly enhanced.

2. In the present invention, at least one convex part is provided on the pressing part of the gland base, and an upwardly protruding sealing ring is arranged on the outermost edge of the pressing part; correspondingly, the gland skirt is provided with a concave part and a gland Outer ring, when the suction part of the gland base deforms and drives the pressing part of the gland base to shrink inward, the convex part and the outermost sealing ring are hardened by the concave part of the gland skirt and outside of the gland. The ring resists, effectively preventing the rubber sucker from shrinking toward the center of the sucker under vacuum, causing air leakage; especially a sealing ring is set at the outermost edge of the sucker body, this sealing ring passes the contraction force toward the center under the internal vacuum state With the outside atmospheric pressure, it tightly surrounds the outer edge of the gland and adheres to the wall tightly, acting as a sealing suction cup.

3. In the present invention, the sealing ring and pressing part of the suction cup body are designed to be thinner. When the adjusting screw is lifted, the suction part of the suction cup body is lifted upwards and deformed into a cylindrical shape, and negative pressure is formed inside to cause the pressing part around the suction cup body The connection with the connection part of the suction cup gland is more tightly fitting, and at the same time, the friction between the suction cup main body and the wall is enhanced, so that the suction cup adsorption force is more durable.

4. The powerful hook suction cup of the present invention not only has strong suction power and good sealing performance, it adopts the adjustment screw to adjust the negative pressure inside the suction cup, and realizes the clutch between the suction cup and the suction surface by controlling the size and presence of the internal pressure of the suction cup. It is easy to install and disassemble, can be reused, and has a wide range of applications; the adsorption force can also be adjusted according to the gravity of the pendant, and the maximum adsorption force can reach more than 17 kg.

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Description of the drawings

Figure 1 is a schematic structural diagram of a suction cup for a powerful pendant of the present application;

Figure 2 is a perspective view of a suction cup for a powerful pendant of this application;

Figure 3 is an exploded view of a suction cup for a powerful pendant in this application.

Numbers in the figure: 1-suction cup body, 11-suction part, 12-squeezing part, 13-seal groove, 2-suction cup gland, 21-gland cylinder body, 22-gland skirt, 3-way Hole, 4-adjusting screw, 41-screw base, 32-adjusting rod, 5-seal ring, 6-limiting snap ring, 7-seal groove, 8-protrusion, 9-recess, 10-gland outer ring .

Detailed ways

As shown in Figures 1 to 3, a powerful pendant suction cup involved in this application includes a suction cup main body 1, a suction cup gland 2. An integrated adjusting screw 4 is installed in the suction cup main body 1, and is provided on the suction cup gland 2. There is a through hole 3 corresponding to the position of the adjusting screw 4. The screw base 41 of the adjusting screw 4 is pre-embedded in the suction cup body 1, and the screw portion 42 passes through the through hole 3 and is connected to an external tightening device. The screw base 41 drives the main body of the suction cup to lift upwards, generating a vacuum between the rubber suction cup and the suction surface (wall), so that the suction cup product is tightly adsorbed on the wall.

In this application, in order to enhance the sealing performance of the suction cup and increase the suction force, the suction cup main body 1 is provided with a suction part 11 in the middle and a pressing part 12 arranged on the edge, and at least one pressing part 12 is provided on the pressing part 12 The convex parts 8 are arranged one by one from the outer end of the pressing part 12 inward. Preferably, the pressing portion 12 described in this embodiment is provided with two convex portions 8. The bottom end of the outermost convex portion 8 extends outward to form a concave sealing groove 7, and the outermost portion of the sealing groove 7 The rim is provided with a sealing ring 5 protruding upward; correspondingly, the suction cup gland 2 is divided into a gland cylinder portion 21 in the middle and a gland skirt portion 22 provided on the periphery of the cylinder. The cylinder part 21 is set in a straight cylindrical shape, and the gland cylinder part 21 extends outward to form a gland skirt part 22 perpendicular to it. The gland skirt part 22 is provided with a convex part 8 corresponding to the pressing part 12 of the suction cup body The concave portion 9 of the gland skirt portion 22 is provided with a gland outer ring 10 extending downward at the outermost edge of the concave portion 9 of the gland skirt portion 22, and the gland outer ring 10 is clamped in the sealing groove 7 of the pressing portion 12, The sealing ring 5 at the outermost edge of the pressed portion 12 is reversely buckled.

The above design of this application sets the gland cylinder 21 into a straight cylindrical shape, effectively increasing the area of the bottom plane of the cylinder, that is, effectively increasing the contact area between the suction cup and the inside of the cylinder, that is, increasing the capping cylinder per unit area. Compared with the traditional conical or trapezoidal cylinder, this design has more than doubled the contact surface, thereby increasing the space for the shrinkage and deformation of the suction part 11, that is, increasing the vacuum of the suction cup and increasing the unit area The force of the upper negative pressure greatly enhances the adsorption performance of the suction cup; the gland skirt 22 and the gland cylinder 21 are designed perpendicularly. When the suction cup is working, the suction cup body 1 removes the part covered by the gland cylinder 21 The suction surface shrinks into a straight bowl shape due to the vacuum state and separates from the suction surface. The entire part of the gland skirt 22 covering the suction cup body 1 is tightly attached to the suction surface (wall), increasing the bottom surface of the suction cup and The contact area between the walls, the enhanced sealing performance of the suction cup and the friction between the suction cup and the wall, thus increasing the suspended weight of the suction cup load.

At the same time, in the present application, the pressing part 12 of the suction cup main body 1 is provided with convex parts 8 one by one from the outside to the inside, and a sealing groove 7 and a sealing ring 5 are arranged on the outside of the convex part 8; The concave part 9 and the gland outer ring 10, the two parts are interlocked to form an internal sealing system; on the one hand, the close fit of multiple concave and convex parts forms a curved pressing surface, which greatly increases the gland skirt The contact area between 22 and the pressing part 12 of the gland base 1 greatly enhances the sealing performance between the suction cup bodies; on the other hand, the gland outer ring 10 of the suction cup gland 2 extended outward abuts against the suction cup body 1 In the recessed sealing groove 7, the outer ring of the suction cup body 1 is pressed tightly to form a sealing ring on the outer periphery of the suction cup body 1, and the suction cup body 1 is closely attached to the suction surface (wall), so that the bottom surface of the suction cup and the wall The friction force is greatly enhanced, thereby effectively enhancing the sealing and adhesion of the two, blocking the external air from entering the adsorption chamber, ensuring the durability of the strong adsorption force of the suction cup, and avoiding the failure of the suction cup; finally, after passing the suction cup body 1 most The sealing ring 5 on the outer edge is buckled on the outer ring 10 of the suction cup gland 2 to tightly combine the suction cup body 1 and the suction cup gland 2, which not only enhances the shape stability of the suction cup body, and avoids strong negative pressure. In the pressed state, the suction cup main body 1 is displaced relative to the suction cup gland 2, and the leakage of external air is blocked.

Through the clever design of the above-mentioned parts, the suction cup of the pendant of the present application greatly increases the sealing performance and adsorption force of the suction cup, which ensures the effective performance of the suction cup. The design of the suction cup gland straight cylinder increases the vacuum space per unit area and increases the negative pressure in the cylinder, that is, increases the suction force of the suction cup; the gland skirt 22 is perpendicular to the gland cylinder 21 The design increases the contact area and friction between the rubber surface of the suction cup and the wall, and enhances the suction and sealing performance of the suction cup. The pressing part 12 of the suction cup body 1 is designed with a plurality of concentric upward convex rings, which are matched with the grooves designed in the gland skirt part 22, and the combination of the two can effectively prevent the rubber suction cup from shrinking toward the center of the suction cup under vacuum. In particular, a sealing ring 5 is provided at the outermost edge of the suction cup body. This sealing ring tightly surrounds the outer edge of the gland and adheres tightly under the internal vacuum state through the contraction force toward the center and the outside atmospheric pressure. On the wall, it functions as a sealing suction cup.

The convex and concave parts on the suction cup body, the outer ring of the gland, the sealing groove 7, the sealing ring 5, etc. are designed to greatly increase the adhesion and sealing between the suction cup body and between the suction cup and the suction surface (wall); The increase of can prevent the external air from leaking inward, ensure the stability of the strong internal negative pressure, and ensure the durability of the suction cup. At the same time, the strong adsorption force keeps the external sealing parts under tension, so that the contact is closer, and the sealing is further enhanced. The two promote each other, resulting in the suction cup pendant of the present application with good adsorption and sealing. According to the applicant's determination, the suction cup bearing capacity of this application has been directly increased from about 5 kg of ordinary suction cups to 15-17 kg, and the absorption durability is more than 2-3 times that of ordinary suction cups.

In order to ensure the structural stability of the suction part 11 of the rubber suction cup and prevent the downward action of the intercepting load when the suction cup is working, the suction cup and the gland are offset, the suction part 11 of the suction cup body 1 is provided with an upwardly protruding limit. The position retaining ring 6 is the size of the internal cavity of the gland cylinder portion 21 just to restrict the limit retaining ring 6 in the cylinder. At the same time, during the adsorption process, the contact area between the stop ring 6 and the inner wall of the gland cylinder portion 21 is gradually increased, the friction between the suction cup and the inner wall of the gland is enhanced, and the deviation between the two is prevented.

In order to make the suction cup more compliant during use, closer contact with the wall, and better adsorption, the suction cup base 1 is made of soft materials, preferably rubber or silica gel, and other materials with good elasticity can also be used. The flexible material with strong toughness is further designed to reduce the thickness of the pressing part 12 of the suction cup body 1, especially the sealing groove 7 and the sealing ring 5 of the pressing part 12 are further thinned. The applicant found that when the pressing part is thinned to 2-4 mm, and the sealing ring is thinned to 1-2 mm, the suction performance and sealing effect of the suction cup are particularly good. Through the applicant’s repeated trials, the optimal combination is adopted in this embodiment, that is, the pressing portion is reduced to 3 mm, and the sealing ring is reduced to 1.5 mm. Setting this thickness not only ensures that the suction cup body 1 is deformed. It has certain elasticity when it is clamped with the suction cup gland 2, which increases the tightness and sealing of the connection between the two, and also ensures the stability of the suction cup body 1 itself, and enhances the friction between the suction cup body 1 and the wall. . When the adjusting screw 4 is lifted, the suction part 12 of the suction cup main body 1 is also lifted upward to deform into a cylindrical shape, and a negative pressure is formed inside so that the pressing part 12 around the suction cup main body 1 fits the wall more closely.

The suction cup gland 2 can be made of hard materials. When negative pressure is generated inside the suction cup, the gland cylinder body 21 is fixed in shape and does not deform. The adjusting screw 4 drives the suction portion 11 of the suction cup body 1 to lift up. The limit snap ring 6 moves upward to be clamped in the gland cylinder part 21, and the maximum deformation formed can make the uppermost end of the limit snap ring 6 directly abut on the inner surface of the bottom of the suction cup gland 2, forming The cylindrical suction plate has a stable structure and sufficient pressure. The maximum negative pressure can be formed. The weight of the pendant can be more than 17 kg, which is 3-5 times higher than the load-bearing capacity of the ordinary pendant suction cup.

The use process of the present invention: at the beginning, the suction cup body 1 and the suction cup gland 2 are in a separated state, only the limit snap ring 6 on the suction cup body abuts on the suction cup gland 2 and makes point contact with it, and the two pass through the adjusting screw 4 Connection; When using, just place the suction cup in a proper position on the wall, hold the gland skirt 22 with one hand, and rotate the tightening device with the other hand to make the adjusting screw 4 gradually move out of the through hole 3. As a result, the suction part 11 of the suction cup body 1 is driven to contract inward, and gradually rise upward to transform into a cylindrical shape, so that a negative pressure is formed inside, and the stop snap ring 6 is in point contact with the inner surface of the gland cylinder 21 of the suction cup gland 2 When it comes into contact with the surface until it abuts against the bottom of the gland cylinder 21, the maximum negative pressure is formed; at this time, since the gland skirt 22 is provided with the recess 9 and the gland outer ring 10, when the gland base 1 is adsorbed When the portion 11 deforms and drives the pressing portion 12 of the gland base 1 to shrink inward, the convex portion 8 and the outermost sealing ring 5 are hardened by the concave portion 9 of the gland skirt 22 and the gland outer ring 10 To resist, the contact area between the gland skirt 22 and the pressing portion 12 of the gland base 1 is enhanced, and the sealing performance of the suction cup and the friction with the wall are enhanced, and at the same time, the outer ring is restricted from continuing to The center shrinks, causing air leakage; when you need to remove the suction cup for displacement, you only need to rotate the tightening device in the reverse direction to gradually move the adjusting screw 4 from the through hole 3, thereby driving the screw base 41 and the suction cup body 1 to reset, so that The suction cup main body 1 and the suction cup gland 2 are gradually separated, the internal negative pressure is released, and the hook suction cup can be separated from the wall surface, and the operation is simple.

In order to reflect the product performance of this application, the applicant selected two suction cup products similar to this application for comparison with this product. All three include a suction cup part, a gland part, and an adjusting screw. The bottom area of the three products is the same. The structure is basically the same. The structure difference between the suction cup part and the gland part is shown in Table 1. Then, each product is adsorbed on the ceramic tile, and the weight suspension test is performed to detect the contact area of the suction cup and the wall under the working condition of the suction cup. The maximum load of the suction cup and the number of days that the suction cup can last under the maximum load; the contact area between the suction cup and the wall is referenced by the test result of product 2 as a unit of count. The results are shown in Table 2:

Table 1. Different suction cup structures with the same bottom area

Table 2. The effect of different suction cup structures with the same bottom area on the performance of suction cups

product	Contact area with wall	Maximum load (KG)	Sustainable days
Product one	0.34	5	3
Product two	1	10	3
This application	1.5	17.5	7

Combining Table 1 and Table 2, it can be seen that the gland of product 1 is arc-like, without the gland skirt, the inside of the gland is an arc-shaped cavity, and the suction cup is set on a plane, and there is no between the two. For any concavo-convex snap ring, in the adsorption state, the gland only covers the outer circumference of the suction cup, the sealing performance is not high, and the contact area between the suction cup and the wall is small, the negative pressure formed inside is also small, and the bearing capacity is small. And the negative pressure state is unstable. After the suspension exceeds 5KG, the suction cup will be deformed and shifted and fall off. When it is at the maximum load of 5KG, the sustainable days are only 3 days; the second product is equipped with a skirt part, and A concave-convex snap ring is set between the suction cups, and the contact area between the suction cup and the wall is increased, and the sealing performance is improved. When the rotating screw increases, the negative pressure formed inside increases compared with the product, and the bearing capacity doubles However, when the suspension exceeds 10KG, because there is no sealing ring and groove structure, the suction cup body is displaced relative to the suction cup gland, causing air leakage, causing the suction cup to fail and causing it to fall off; the product of this application passes through the suction cup and the gland. An ingenious design, matching each other, the straight-cylinder-shaped gland cylinder body is arranged perpendicular to the skirt part, which greatly increases the contact area and friction between the rubber surface of the suction cup and the wall, which is the second product of the product. 1.5 times, which enhances the suction force and sealing of the suction cup; the pressing part of the suction cup body is designed with a plurality of concentric upward convex rings, which are matched with the corresponding grooves designed on the skirt of the gland, and the two cooperate effectively to prevent The rubber suction cup shrinks toward the center of the suction cup under vacuum, which further improves the overall adsorption performance and sealing performance of the suction cup, so that the maximum bearing capacity of the product of this application can reach 17.5 kg, and it can last up to 7 days, which can meet the daily requirements. In daily life, various pendants, racks, etc. have a wide range of requirements for the load-bearing capacity of the suction cup.

The above content is a further detailed description of the technical solutions provided in conjunction with the preferred embodiments of the invention. It cannot be considered that the specific implementation of the invention is limited to the above descriptions. For those of ordinary skill in the art to which the invention belongs, Without departing from the inventive concept of the present invention, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (7)

1. A powerful pendant suction cup, comprising a suction cup main body, a suction cup gland, and an adjusting screw. It is characterized in that the adjustment screw is installed in the suction cup main body, and the suction cup gland is provided with a through hole corresponding to the position of the adjusting screw, and the adjusting screw passes through the through hole. The hole is connected with the external screwing device. The suction cup main body is provided with a suction part in the middle and a pressing part at the edge. At least one convex part is provided on the pressing part, and the position of the convex part is pressed by the pressing part. The outer ends of the parts are arranged inward one by one, and the bottom end of the outermost convex part extends outward to form a concave sealing groove. The outermost edge of the sealing groove is provided with an upwardly protruding sealing ring. Correspondingly, the suction cup gland is divided into two parts. The gland cylinder is located in the middle and the gland skirt is arranged on the periphery of the cylinder. The gland cylinder is set in a straight cylinder shape, and the gland cylinder extends outward to form a gland skirt perpendicular to it On the side part, the gland skirt is provided with a concave part corresponding to the convex part of the pressing part of the suction cup body, and the outermost edge of the concave part of the gland skirt is provided with a gland outer ring extending downward.
2. A powerful pendant suction cup according to claim 1, wherein the suction part of the suction cup body is provided with an upwardly protruding limit snap ring, and the size of the internal cavity of the gland cylinder body is just enough to limit the position. The snap ring is confined in the barrel.
3. A powerful pendant suction cup according to claim 1, wherein the adjusting screw is an integrated adjusting screw, comprising a screw base and a screw part, the screw base is pre-embedded in the suction cup body, and the screw part passes through the through hole Connect with external tightening device.
4. A powerful pendant suction cup according to claim 1, wherein the pressing part is provided with two convex parts.
5. A powerful pendant suction cup according to any one of claims 1 to 4, wherein the pressing part of the suction cup body is designed to be thinner, and the sealing groove and the sealing ring of the pressing part are further thinned.
6. A strong pendant suction cup according to claim 5, wherein the pressing part is thinned to 2-4 mm, and the sealing ring is thinned to 1-2 mm.
7. The powerful suspension sucker according to claim 6, wherein the pressing part is thinned to 3 mm, and the sealing ring is thinned to 1.5 mm.

Images