CN210889688U

CN210889688U - Powerful pendant sucking disc

Info

Publication number: CN210889688U
Application number: CN201921916420.9U
Authority: CN
Inventors: 唐舜风
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-06-30
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a powerful pendant sucking disc, including sucking disc main part, sucking disc gland, adjusting screw installs in the sucking disc main part, is provided with the through-hole that corresponds with the adjusting screw position on the sucking disc gland, and adjusting screw passes the through-hole and is connected with outside screwing device, the sucking disc main part is provided with the absorption portion in the middle of being located and locates the portion of sticising at edge, is equipped with the convex part in the portion of sticising, outwards extends the sunken seal groove that forms in the convex part bottom in the outside, is equipped with the bellied sealing washer that makes progress in the outermost edge of seal groove, correspondingly, is equipped with the concave part that corresponds with the convex part of sucking disc main part pressfitting in gland shirt rim portion, is equipped with the gland outer lane of downward extension in the most. The utility model discloses a powerful couple sucking disc convenient to use, application scope are wide, the installation is simple with the dismantlement, and the leakproofness is good, and the adsorptivity is powerful, can load 17 kilograms on ordinary ceramic tile is experimental to the heavy object, and continuous bearing is more than 7 days.

Description

Powerful pendant sucking disc

Technical Field

The application relates to a powerful pendant sucking disc, which is used for connecting various pendants in a bathroom and a kitchen with a wall body and belongs to daily necessities.

Background

In daily life, in order to install a pendant, such as a bath towel bar, a hook, a soap box, a storage rack, a towel rack and the like, on a wall body, one method is to adopt a punching mode, firstly drill a hole on the wall body, then drive an expansion screw hole, and then connect the pendant on the wall body by an expansion screw for fixing; the advantages of adopting the installation mode are: the mounting is stable and not easy to fall off, the bearing capacity is large, and the placement of articles with large weight can be met; the disadvantages are that: the ceramic tile may be cracked or broken during the drilling process, so that the overall aesthetic property is affected; moreover, the installation procedure is cumbersome, requires specialized tools, and is not easy for female installers to operate.

The other way is to adopt a punching-free mode, and two modes are generally adopted at present: one is viscose and one is a sucker; the viscose type hanging piece is convenient to use, small in bearing capacity, incapable of withstanding sunlight and rain, easy to fall off after long use, not easy to uncover when the hanging piece needs to be displaced, and difficult to clean up viscose on the wall surface after being uncovered forcibly.

The sucker type pendant is convenient to install and use, and can be fixed without any adhesive agent only by virtue of the adsorption force brought by negative pressure formed in the sucker. However, many existing sucker pendants are too simple in design or unreasonable in structure, the sucker is poor in sealing performance, small in adsorption force, insufficient in adhesion performance and bearing capacity, and only can bear light pendants, when the pendants with large mass or large volume need to be hung, the pendants cannot be directly stuck due to too large gravity, or cannot be stuck due to too large endurance force, and fall off from the wall surface automatically after being installed for a period of time.

In the existing design, the common defects are mainly reflected in the following two points: firstly, the sucker body is not provided with a sealing structure, or the position of the sealing structure is provided with defects, so that the periphery of the sucker is poor in sealing performance, the joint between the sucker bodies and between the sucker and the wall surface is not tight enough, the vacuum state in the sucker is unstable, air gradually leaks into the sucker in the use process, the adsorption force gradually loses efficacy, and the sucker falls off; the sucking disc gland is mostly arranged in a semicircular or arc shape, the inner cavity forms a conical or trapezoidal cylinder body when the sucking disc gland is in an adsorption state, the volume formed by the adsorption inner cavity on the adsorption surface with the same area is small, so that the vacuum degree is small, the negative pressure strength is small, the sucking disc adsorption force is not strong, the sucking disc gland is not stable in connection with the wall surface and is easy to deform, when the weight of a suspended object is too large, a downward-inclined pulling force is generated on the sucking disc, the sucking disc is easy to deform and lose efficacy, and therefore the suspended object falls off.

In order to solve the defects existing in the prior art, a strong pendant sucker which has good sealing performance, strong adsorbability, long adsorption duration, convenient opening and closing, simple displacement and long service life needs to be designed to meet the needs of people.

The present application has resulted therefrom.

SUMMERY OF THE UTILITY MODEL

To the defect that above-mentioned prior art exists, the aim at of this application provides a powerful pendant sucking disc, and its convenient to use, application scope are wide, the installation is simple with the dismantlement, and the leakproofness is good, and the adsorptivity is powerful, adsorbs lastingly.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

the utility model provides a powerful pendant sucking disc, includes sucking disc main part, sucking disc gland, adjusting screw, its characterized in that: the adjusting screw is arranged in the sucker main body, the sucker press cover is provided with a through hole corresponding to the position of the adjusting screw, the adjusting screw passes through the through hole to be connected with an external screwing device, the sucker main body is provided with an adsorption part in the middle and a pressing part at the edge, at least one convex part is arranged on the pressing part, the positions of the convex parts are inwards arranged one by one from the outer end of the pressing part, the bottom end of the convex part at the outermost side extends outwards to form a sunken sealing groove, the outermost edge of the sealing groove is provided with a sealing ring which protrudes upwards, correspondingly, the sucker gland is divided into a gland cylinder body part positioned in the middle and a gland skirt part arranged on the periphery of the cylinder body, the gland cylinder body is arranged into a straight cylinder shape, the gland cylinder body extends outwards to form a gland skirt edge part vertical to the gland cylinder body, the skirt part of the gland is provided with a concave part corresponding to the convex part of the pressing part of the sucker body, and the outermost edge of the concave part of the skirt part of the gland is provided with a gland outer ring which extends downwards.

The application further provides that:

the sucking part of the sucking disc main body is provided with an upward protruding limiting snap ring, and the size of the inner cavity of the gland cylinder body part just limits the limiting snap ring in the cylinder body.

Further:

adjusting screw formula adjusting screw as an organic whole, including screw rod base and screw rod portion, the screw rod base pre-buried in the sucking disc main part, screw rod portion passes the through-hole and is connected with outside screwing device.

Two convex parts are arranged on the pressing part.

The pressing part of the sucker main body is thinned, and the sealing groove and the sealing ring of the pressing part are further thinned.

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

Further preferably, the pressing part is thinned to 3 mm, and the sealing ring is thinned to 1.5 mm.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a gland barrel part sets to the straight tube type, more traditional conical barrel, effectively increase barrel bottom plane part's area, effectively increase sucking disc and the inside area of contact of barrel promptly, increased the volume of gland barrel on the unit area promptly, compare traditional conical or trapezoidal barrel, this design has increased the contact surface more than one time to increased the space that the absorption portion shrink deformation increases, increased the vacuum of sucking disc promptly, increased the strength of negative pressure on the unit area, strengthened the adsorption performance of sucking disc greatly.

2. The utility model is provided with at least one convex part on the compressing part of the gland base, and the outermost edge of the compressing part is provided with a sealing ring which protrudes upwards; correspondingly, the skirt part of the gland is provided with a concave part and an outer ring of the gland, when the adsorption part of the gland base deforms to drive the pressing part of the gland base to contract inwards, the convex part and the sealing ring at the outermost edge of the gland base are propped against by the concave part of the skirt part of the gland and the outer ring of the gland, and the rubber sucker is effectively prevented from contracting towards the center of the sucker in a vacuum state to cause air leakage; particularly, a sealing ring is arranged at the outermost edge of the sucker main body, and the sealing ring tightly surrounds the outer edge of the gland and is tightly attached to a wall body by the shrinkage force towards the center and the outside atmospheric pressure in the internal vacuum state, so that the function of sealing the sucker is achieved.

3. The utility model discloses the sealing washer of well sucking disc main part carries out the attenuate design with the portion of sticising, and when adjusting screw was promoted, the absorption portion of sucking disc main part upwards promoted to become cylindricly, and inside negative pressure that forms causes is connected between the connecting portion of sucking disc main part peripheral pressfitting portion and sucking disc gland and pastes the clothes closely more, strengthens the frictional force between sucking disc main part and the wall simultaneously, makes the sucking disc adsorption affinity more lasting.

4. The powerful hook sucker of the utility model has strong suction and good sealing performance, adopts the mode of adjusting the screw rod to adjust the negative pressure inside the sucker, realizes the clutch between the sucker and the suction surface by controlling the internal pressure of the sucker and the existence of the internal pressure, is convenient to install and disassemble, can be repeatedly used, and has wide practical range; the adsorption force can be adjusted according to the gravity of the pendant, and the maximum adsorption force can reach more than 17 kilograms.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of a suction cup for a high power pendant of the present application;

FIG. 2 is a perspective view of a powerful pendant chuck of the present application;

fig. 3 is an exploded view of a powerful pendant suction cup of the present application.

Reference numbers in the figures: the suction cup comprises a suction cup main body 1, an adsorption part 11, a pressing part 12, a sealing groove 13, a suction cup gland 2, a gland cylinder part 21, a gland skirt part 22, a through hole 3, an adjusting screw rod 4, a screw rod base 41, an adjusting rod part 32, a sealing ring 5, a limiting snap ring 6, a sealing groove 7, a convex part 8, a concave part 9 and a gland outer ring 10.

Detailed Description

As shown in fig. 1-3, the application relates to a powerful pendant sucker, which comprises a sucker main body 1 and a sucker gland 2, wherein an integrated adjusting screw 4 is installed in the sucker main body 1, a through hole 3 corresponding to the position of the adjusting screw 4 is arranged on the sucker gland 2, a screw base 41 of the adjusting screw 4 is embedded in the sucker main body 1, a screw portion 42 passes through the through hole 3 and is connected with an external screwing device, the screw base 41 drives the sucker main body to be lifted upwards by screwing the adjusting screw 4, and vacuum is generated between a rubber sucker and an adsorption surface (wall body), so that the sucker product is tightly adsorbed on the wall surface.

In this application, in order to strengthen the leakproofness of sucking disc, increase the adsorption affinity, sucking disc main part 1 is provided with the portion of sticising 12 that is located the middle absorption portion 11 and locates the edge, is equipped with at least one convex part 8 on the portion of sticising 12, convex part 8 position inwards set up one by the portion of sticising 12 outer end. Preferably, the pressing part 12 in this embodiment is provided with two protrusions 8, the bottom end of the outermost protrusion 8 extends outwards to form a concave sealing groove 7, and the outermost edge of the sealing groove 7 is provided with a sealing ring 5 protruding upwards; correspondingly, the sucker gland 2 is divided into a gland cylinder body 21 positioned in the middle and a gland skirt part 22 arranged on the periphery of the cylinder body, the gland cylinder body 21 is arranged in a straight cylinder shape, the gland cylinder body 21 extends outwards to form the gland skirt part 22 vertical to the gland cylinder body, the gland skirt part 22 is provided with a concave part 9 corresponding to a convex part 8 of the sucker main body pressing part 12, the outermost edge of the concave part 9 of the gland skirt part 22 is provided with a gland outer ring 10 extending downwards, the gland outer ring 10 is clamped in a sealing groove 7 of the pressing part 12, and the sealing ring 5 at the outermost edge of the pressing part 12 is reversely buckled.

According to the design, the gland cylinder body part 21 is set to be in a straight cylinder shape, the area of the plane part at the bottom of the cylinder body is effectively increased, namely the contact area between the sucker and the inside of the cylinder body is effectively increased, namely the volume of the gland cylinder body in unit area is increased, compared with the traditional conical or trapezoidal cylinder body, the contact surface is increased by more than one time, so that the space for increasing the shrinkage deformation of the adsorption part 11 is increased, namely the vacuum degree of the sucker is increased, the force of negative pressure in unit area is increased, and the adsorption performance of the sucker is greatly enhanced; gland skirt portion 22 is perpendicular design with gland barrel portion 21, when the sucking disc during operation, the adsorption plane that the sucking disc main part 1 covered except gland barrel portion 21 contracts into the bowl form of straight section of thick bamboo because of vacuum state and breaks away from the adsorption plane outward, the part that whole gland skirt portion 22 covered on sucking disc main part 1 is all hugged closely on adsorption plane (wall body), the area of contact between sucking disc bottom surface and the wall body has been increased, the sucking disc sealing performance of reinforcing and the frictional force between sucking disc and the wall body, consequently, the weight of hanging of the sucking disc load of increase.

Meanwhile, the convex parts 8 are arranged on the pressing part 12 of the sucker main body 1 one by one from outside to inside, and the sealing groove 7 and the sealing ring 5 are arranged on the outer sides of the convex parts 8; the two parts are buckled with each other in a ring manner to form an internal sealing system by matching with a concave part 9 arranged on a gland skirt edge part 22 of the sucker gland 2 and a gland outer ring 10; on one hand, the concave-convex parts are tightly matched to form a curved pressing surface, so that the contact area between the gland skirt edge part 22 and the pressing part 12 of the gland base 1 is greatly increased, and the sealing performance between the sucker bodies is greatly enhanced; on the other hand, the outwards extended gland outer ring 10 of the sucker gland 2 abuts against the inside of the sealing groove 7 of the sucker main body 1 to tightly press the outer ring of the sucker main body 1, a sealing ring is formed on the periphery of the sucker main body 1, the sucker main body 1 is tightly attached to the adsorption surface (wall), so that the friction force between the bottom surface of the sucker and the wall surface is greatly enhanced, the sealing property and the attachment force of the sucker main body and the adsorption surface are effectively enhanced, external air is prevented from entering the adsorption cavity, the durability of strong adsorption force of the sucker is ensured, and the failure of the sucker is avoided; finally, the sealing ring 5 at the outermost edge of the sucker main body 1 is reversely buckled on the gland outer ring 10 of the sucker gland 2, and the sucker main body 1 and the sucker gland 2 are tightly combined, so that the shape stability of the sucker body is enhanced, the sucker main body 1 is prevented from shifting relative to the sucker gland 2 in a strong negative pressure state, and external air is prevented from leaking inwards.

The pendant sucking disc of this application is mutually supported through the ingenious design of several above-mentioned parts, greatly increased's the leakproofness and the adsorption affinity of sucking disc, has guaranteed the effective performance of sucking disc promptly. The design of the sucker gland straight cylinder body increases the vacuum space on a unit area, increases the negative pressure in the cylinder body, namely increases the adsorption force of the sucker; the pressing cover skirt part 22 and the pressing cover barrel body part 21 are designed vertically, so that the contact area and the friction force between the rubber surface of the sucking disc and a wall body are increased, and the adsorption force and the sealing performance of the sucking disc are enhanced. A plurality of concentric upward raised circular rings are designed on the pressing part 12 of the sucker main body 1, the grooves in the skirt part 22 of the gland are correspondingly designed in a matching way, the rubber sucker is effectively prevented from shrinking to the center of the sucker in a vacuum state in a matching way by the two rings, particularly, a sealing ring 5 is arranged at the outermost edge of the sucker main body, the sealing ring tightly surrounds the outer edge of the gland and tightly attaches to a wall body through the shrinking force to the center and the outside atmospheric pressure in the internal vacuum state, and the function of sealing the sucker is achieved.

The design of the convex part, the concave part, the outer ring of the gland, the sealing groove 7, the sealing ring 5 and the like on the sucker body greatly increases the bonding performance and the sealing performance between the sucker bodies and between the sucker and the adsorption surface (wall body); the increase of leakproofness can prevent outside gas to inwards reveal, has guaranteed the stability of inside powerful negative pressure, guarantees the persistence of the big suction of sucking disc. Meanwhile, the strong adsorption force enables an external sealing part to be in a tensioning state continuously, so that the contact is tighter, the sealing performance is further enhanced, the mutual promotion of the strong adsorption force and the external sealing part results in that the sucker pendant has good adsorption performance, sealing performance and adsorption durability, and through the determination of the applicant, the bearing capacity of the sucker is directly improved to 15-17 kilograms from about 5 kilograms of a common sucker, and the adsorption durability is more than 2-3 times of that of the common sucker.

In order to guarantee the structural stability of the rubber sucker adsorption part 11 and prevent the sucker from generating deviation between the sucker and the gland due to the downward action of load interception during the work, the adsorption part 11 of the sucker main body 1 is provided with an upward protruding limit snap ring 6, and the size of an inner cavity of the gland barrel body part 21 just limits the limit snap ring 6 in the barrel. Meanwhile, the contact area between the limiting snap ring 6 and the inner wall of the gland cylinder body part 21 is gradually increased in the adsorption process, the friction force between the sucker and the inner wall of the gland is enhanced, and the mutual offset of the sucker and the inner wall of the gland is prevented.

In order to make the sucking disc more obedient when using, more inseparable with the contact of wall body, the adsorptivity is better, sucking disc base 1 adopt soft materials to make, preferably adopt materials such as rubber or silica gel, can also adopt other good elasticity, the strong soft materials of toughness, it is further right the sucking disc main part 1 sticis portion 12 carry out the attenuate design, in particular, in the seal groove 7 of portion 12 that sticiss, sealing washer 5 department further attenuate. The applicant found that suction cup adsorption and sealing are particularly good when the compression part is thinned to 2-4 mm and the sealing ring is thinned to 1-2 mm. Adopt the optimum combination in this embodiment through the applicant's trial and error, promptly the portion attenuate to 3 millimeters that sticiss, sealing washer attenuate to 1.5 millimeters, set up and have certain elasticity when this thickness has not only guaranteed that sucking disc main part 1 and sucking disc gland 2 joint have when warping, increase the compact type and the leakproofness that the two is connected, also guaranteed simultaneously that sucking disc main part 1 itself has certain stability, the frictional force between reinforcing sucking disc main part 1 and the wall. When the adjusting screw rod 4 is lifted, the suction part 12 of the suction cup main body 1 is driven to be lifted upwards to be changed into a cylindrical shape, and negative pressure is formed inside the suction cup main body so that the pressing part 12 on the periphery of the suction cup main body 1 is tightly attached to the wall surface.

The sucking disc gland 2 can be made of hard materials, when the inside of the sucking disc generates negative pressure, the shape of the gland cylinder body part 21 is fixed and does not deform, the adjusting screw rod 4 drives the adsorption part 11 of the sucking disc main body 1 to be lifted upwards, the limiting clamp ring 6 moves upwards and is clamped in the gland cylinder body part 21, the formed maximum deformation can enable the uppermost end of the limiting clamp ring 6 to be directly abutted against the inner surface of the bottommost part of the sucking disc gland 2, the formed cylindrical sucking disc is stable in structure and abundant in pressure, the formed maximum negative pressure can bear the weight of a pendant which is more than 17 kilograms, and the bearing capacity of the pendant is improved by 3-5 times compared with that of a common sucking disc pendant.

The utility model discloses a use: at first, the sucker main body 1 and the sucker gland 2 are in a separated state, only the limiting snap ring 6 on the sucker main body is abutted against the sucker gland 2 and generates point contact with the sucker gland, and the sucker main body and the limiting snap ring are connected through the adjusting screw rod 4; when the suction cup is used, the suction cup is integrally arranged at a proper position of a wall surface, one hand is abutted against the skirt part 22 of the gland, the other hand is rotated to rotate the screwing device, the adjusting screw rod 4 is gradually moved out of the through hole 3, so that the adsorption part 11 of the suction cup main body 1 is driven to shrink inwards and gradually lift upwards to deform into a cylinder shape, negative pressure is formed inside, the limiting snap ring 6 is in point-to-surface contact with the inner surface of the gland cylinder body part 21 of the suction cup gland 2 from point contact to surface contact until the limiting snap ring is abutted against the bottommost part of the gland cylinder body; at this time, because the pressing cover skirt part 22 is provided with the concave part 9 and the pressing cover outer ring 10, when the adsorption part 11 of the pressing cover base 1 deforms to drive the pressing part 12 of the pressing cover base 1 to contract inwards, the convex part 8 and the outermost edge of the sealing ring 5 are supported by the concave part 9 of the hard pressing cover skirt part 22 and the pressing cover outer ring 10, so that the contact area between the pressing cover skirt part 22 and the pressing part 12 of the pressing cover base 1 is increased, the sealing performance of the sucking disc and the friction force between the sucking disc and the wall surface are enhanced, and the outer ring is limited to continuously contract towards the center to cause air leakage; when the sucking disc shifts when needs take off, only need the reverse rotation device of screwing, make adjusting screw 4 move into from through-hole 3 gradually to drive screw rod base 41 and sucking disc main part 1 and reset, make sucking disc main part 1 and sucking disc gland 2 separate gradually, release inside negative pressure, can realize that the couple sucking disc breaks away from with the wall, easy operation.

In order to embody the product performance of the application, the applicant selects two sucker products similar to the application to compare with the product, wherein the sucker products comprise a sucker part, a gland part and an adjusting screw rod, the bottom areas of the three products are the same, the structures of the adjusting screw rods are basically the same, the structural difference of the sucker part and the gland part is shown in table 1, the products are respectively adsorbed on ceramic tiles, a heavy object suspension test is carried out, and the contact area between the sucker and the wall surface, the maximum load of the sucker and the sustainable days of the sucker at the maximum load are detected under the working state of the sucker; the contact area of the sucker and the wall surface is referred to by taking the detection result of the product II as 1 counting unit, and the result is shown in the table 2:

TABLE 1 different suction cup structures of the same floor area

Product(s)	Sucking disc part	Gland part
			Product one	Plane setting has not any unsmooth snap ring	Arc-like shape without gland skirt edge part
Product two	Has no thinning design, is provided with a concave-convex snap ring and has no sealing ring at the edge	Is provided with a gland skirt part which is provided with a concave-convex snap ring, and the gland cylinder body part is conical
			This application	The sucker pressing part is provided with a convex part, a sealing groove and a sealing ring for thinning design	Is provided with a gland skirt part, a concave part and a gland outer ring, and the gland cylinder part is in a straight cylinder shape

TABLE 2 Effect of different sucker structures of the same base area on the performance of the sucker product

Product(s)	Area of contact with wall	Maximum load (KG)	Number of days of continuance
				Product one	0.34	5	3
Product two	1	10	3
				This application	1.5	17.5	7

The pressing cover of the product I is arc-like, a pressing cover skirt edge part is not arranged, an arc-shaped cavity is arranged in the pressing cover, the sucking disc part is arranged in a plane, any concave-convex clamping ring is not arranged between the pressing cover and the sucking disc part, the pressing cover only covers the periphery of the sucking disc part in an adsorption state, the sealing performance is not high, the contact area between the sucking disc and a wall body is small, the negative pressure formed in the sucking disc part is small, the bearing capacity is small, the negative pressure state is unstable, the sucking disc part is immediately deformed and displaced to cause falling after the sucking disc part is hung above 5KG, and when the sucking disc part is hung at the maximum load of 5KG, the sustainable days are 3 days; the second product is provided with the skirt part, a concave-convex clamping ring is arranged between the skirt part and the sucker part, the contact area between the sucker and a wall body is increased, the sealing performance is improved, when the rotary screw is improved, the negative pressure formed inside is increased compared with the first product, and the bearing capacity is improved in multiples, but when the suspension exceeds 10KG, the sucker body is displaced relative to the sucker gland to cause air leakage and the sucker to lose efficacy due to no sealing ring or groove structure, so that the dropping is caused; the product of the application is mutually matched through a plurality of ingenious designs on the sucking disc and the gland, and the cylinder body part of the straight cylinder type gland is vertically arranged with the skirt edge part, so that the contact area and the friction force between the rubber surface of the sucking disc and a wall body are greatly increased, which are 1.5 times of those of the product II, and the adsorption force and the sealing property of the sucking disc are enhanced; design a plurality of concentric ascending bellied rings of concentric on the pressing part of sucking disc main part, the cooperation corresponds the recess of design in gland shirt rim portion, both cooperate and effectively prevent rubber suction cup to the sucking disc center shrink under vacuum state, the holistic adsorption efficiency of sucking disc and sealing performance have further been improved, the biggest bearing capacity that makes the product of this application reaches 17.5 kilograms, and sustainable day reaches 7 days of a specified duration, can satisfy in daily life, various pendant, the requirement to the sucking disc bearing capacity such as supporter, application scope is wide.

The above description is provided for the purpose of describing the preferred embodiments of the present invention in more detail, and it should not be construed that the embodiments of the present invention are limited to the description above, and it will be apparent to those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a powerful pendant sucking disc, includes sucking disc main part, sucking disc gland, adjusting screw, its characterized in that: the adjusting screw is arranged in the sucker main body, the sucker press cover is provided with a through hole corresponding to the position of the adjusting screw, the adjusting screw passes through the through hole to be connected with an external screwing device, the sucker main body is provided with an adsorption part in the middle and a pressing part at the edge, at least one convex part is arranged on the pressing part, the positions of the convex parts are inwards arranged one by one from the outer end of the pressing part, the bottom end of the convex part at the outermost side extends outwards to form a sunken sealing groove, the outermost edge of the sealing groove is provided with a sealing ring which protrudes upwards, correspondingly, the sucker gland is divided into a gland cylinder body part positioned in the middle and a gland skirt part arranged on the periphery of the cylinder body, the gland cylinder body is arranged into a straight cylinder shape, the gland cylinder body extends outwards to form a gland skirt edge part vertical to the gland cylinder body, the skirt part of the gland is provided with a concave part corresponding to the convex part of the pressing part of the sucker body, and the outermost edge of the concave part of the skirt part of the gland is provided with a gland outer ring which extends downwards.

2. A power pendant suction cup as defined in claim 1, further comprising: the sucking part of the sucking disc main body is provided with an upward protruding limiting snap ring, and the size of the inner cavity of the gland cylinder body part just limits the limiting snap ring in the cylinder body.

3. A power pendant suction cup as defined in claim 1, further comprising: adjusting screw formula adjusting screw as an organic whole, including screw rod base and screw rod portion, the screw rod base pre-buried in the sucking disc main part, screw rod portion passes the through-hole and is connected with outside device of screwing.

4. A power pendant suction cup as defined in claim 1, further comprising: two convex parts are arranged on the pressing part.

5. A power pendant suction cup according to any of claims 1-4 wherein: the pressing part of the sucker main body is thinned, and the sealing groove and the sealing ring of the pressing part are further thinned.

6. A power pendant suction cup as defined in claim 5, wherein: the pressing part is thinned to 2-4 mm, and the sealing ring is thinned to 1-2 mm.

7. A power pendant suction cup as defined in claim 6, wherein: the part attenuate to 3 millimeters that sticiss, the sealing washer attenuate to 1.5 millimeters.