A suction cup body structure and a vacuum suction cup using the suction cup body structure

Abstract

This invention relates to a suction cup main structure and a vacuum suction cup using the suction cup main structure. The suction cup main structure, by providing a first annular sealing part and a second annular sealing part with a corrugated bottom surface on the adsorption surface of the suction cup, forms two effective seals during use. This not only makes it suitable for adsorbing and gripping various materials well, but also provides good material adsorption force, greatly improving construction safety. By providing an inner annular gravity sealing part and an outer annular gravity sealing part that cooperate with the second annular sealing part, the three elements are organically combined, easily achieving rapid and smooth sealing of uneven surfaces while maintaining superior adsorption effect, effectively solving the slippage problem between the suction cup and the object to be adsorbed.

Description

Technical Field

[0001] This invention relates to the field of vacuum suction cups, and more particularly to a suction cup body structure and a vacuum suction cup using the suction cup body structure. Background Technology

[0002] Currently, vacuum suction cups are widely used for adsorbing and gripping materials such as ceramic tiles, slabs, marble, granite, steel plates, and glass. Therefore, they are frequently used in installation and maintenance work. In use, the vacuum suction cup is placed on the material, and a negative pressure space is created between the suction cup's rubber pad and the material to achieve adsorption and gripping. However, existing vacuum suction cups have the following drawbacks: First, they can only effectively adsorb smooth, flat materials and are not suitable for gripping rough, textured, uneven, or curved surfaces, limiting their application range. Second, when applying vertical force from the side of the vacuum suction cup, slippage between the suction cup and the material is very likely, posing a significant risk of detachment. Third, during construction, if the rubber pad is accidentally touched while adsorbing uneven or rough surfaces, the suction cup can easily detach instantly, posing a significant safety hazard. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention provides a suction cup main structure and a vacuum suction cup using the suction cup main structure, which can not only be well applied to the adsorption and gripping of various materials, but also has good adsorption force on materials, greatly improving construction safety.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A suction cup main structure includes a main keel and a rubber disc connected to the main keel. One side of the rubber disc is an adsorption surface, the middle part of the adsorption surface is a plane, and the edge is an outwardly inclined slope. The end of the slope forms an adsorption cup opening. A first annular sealing part is provided in the middle of the slope. A second annular sealing part is provided on the periphery of the plane, spaced apart from the first annular sealing part. The bottom side of the second annular sealing part is a corrugated surface. The vertical distance from the bottom of the first annular sealing part to the adsorption cup opening is not less than the vertical distance from the bottom of the second annular sealing part to the adsorption cup opening.

[0006] The first annular sealing part and the rubber disc are integrally formed and are made of EPDM rubber, while the second annular sealing part is made of silicone or memory rubber.

[0007] The first annular sealing portion includes at least two rings of sealing protrusions arranged in sequence;

[0008] The second annular sealing part has an air extraction port on its inner plane. When adsorbing the object to be adsorbed, under the action of external force, the space enclosed by the second annular sealing part, the adsorption surface and the object to be adsorbed can be drawn into a negative pressure space through the air extraction port.

[0009] The suction cup main structure of this application is applied to a vacuum suction cup. When using it to adsorb materials, after a negative pressure space is created through the air extraction port, the first annular sealing part and the second annular sealing part form two seals. By combining the selection of the two sealing materials and the setting of their position and height, two effective seals are obtained. Therefore, it can be used to effectively adsorb and grasp various materials such as flat surfaces, smooth surfaces, rough surfaces, textured surfaces, uneven surfaces, and curved surfaces, which greatly improves the safety during construction. For uneven surfaces, it is more suitable for adsorbing and grasping uneven surfaces with a height of less than 5mm.

[0010] Specifically, the vertical distance from the bottom of the first annular sealing part to the adsorption cup opening is not less than the vertical distance from the bottom of the second annular sealing part to the adsorption cup opening. This allows the space between the two seals to be effectively vacuumed, thus effectively utilizing the sealing function of the first annular sealing part. If the vertical distance from the bottom of the first annular sealing part to the adsorption cup opening is less than the vertical distance from the bottom of the second annular sealing part to the adsorption cup opening, it will be difficult to vacuum the space between them, thus making it difficult to effectively utilize the sealing effect of the first annular sealing part. The first annular sealing part is located in the middle of the slope rather than at the edge. Its combination with the edge slope can provide better sealing and adsorption, and it is also less likely to affect the adsorption effect of the suction cup on the material due to contact. The bottom side of the second annular sealing part is a corrugated surface, which is conducive to quickly adsorbing the sealing concave and convex surfaces and achieving a better adsorption effect. Specifically, during adsorption, the horizontal vertical adsorption can reach about 180 kg, and the lateral adsorption can reach about 130 kg.

[0011] In one example, during construction, the material to be adsorbed often needs to be adjusted to an inclined or vertical angle, which can easily cause slippage between the suction cup and the material. To solve this problem, the following settings are made: The main keel is designed as a ring, specifically a circular ring or an elliptical ring, etc. On the plane, there are inner and outer ring gravity sealing parts, which are integrally formed with the adhesive disc on both sides of the second ring sealing part. The cross-section of the inner and outer ring gravity sealing parts is a kind of inverted triangle structure. The vertical distance from the bottom of the inner ring gravity sealing part to the adsorption disc opening is greater than the vertical distance from the bottom of the outer ring gravity sealing part to the adsorption disc opening. The vertical distance from the bottom of the outer ring gravity sealing part to the adsorption disc opening is not less than the vertical distance from the bottom of the first ring sealing part to the adsorption disc opening. The inner, second, and outer ring gravity sealing parts correspond to the positions of the main keel.

[0012] The combination of the inner and outer annular gravity seals with the second annular seal solves the problem of slippage between the suction cup and the material at inclined or vertical angles, greatly improving construction safety. For uneven surfaces, it is suitable for adsorbing and gripping materials with an unevenness of less than 5mm. The second annular seal with a corrugated bottom is organically and physically combined with the two gravity annular seal lines, which can easily achieve rapid and smooth sealing of uneven surfaces while maintaining good adsorption force. When all three are aligned with the main keel, the adsorption effect is better and slippage is less likely.

[0013] Preferably, the vertical distance from the bottom of the inner annular gravity sealing part and the outer annular gravity sealing part to the adsorption disk opening is greater than the vertical distance from the bottom of the second annular sealing part to the adsorption disk opening, which can improve the adsorption and gripping effect and further solve the problem of suction cup slippage during construction.

[0014] In one example, a sealing buffer groove is formed on the planes immediately inside the inner annular gravity seal and outside the outer annular gravity seal, respectively, which facilitates the effective adsorption of the two gravity sealing lines and the second annular seal. Specifically, during adsorption, horizontal vertical adsorption can reach approximately 320 kg, and lateral adsorption can reach approximately 260 kg. Without the aforementioned technical features, the load capacity will be slightly less than this.

[0015] In one example, the first annular sealing part, the inner annular gravity sealing part, the outer annular gravity sealing part, and the rubber disc are made of 50-degree EPDM rubber, while the second annular sealing part is made of 10-degree silicone or 80-degree memory rubber. This configuration allows the first and second annular sealing parts to achieve a superior sealing effect, resulting in an unexpected adsorption effect and a significant increase in adsorption force.

[0016] In one example, without affecting the adsorption and gripping effect, i.e., ensuring the sealing effect, the second annular sealing part is detachably connected to the adsorption surface to facilitate replacement and maintenance of the second annular sealing part. A first rubber magnet ring is bonded to the second annular sealing part, and a second rubber magnet ring that cooperates with and attracts the first rubber magnet ring is bonded to the adsorption surface. Pressure-sensitive adhesive is used for bonding.

[0017] In one example, a limiting groove is also formed on the adsorption surface corresponding to the second annular seal to engage the second annular seal, which can further fix the second annular seal and prevent it from falling off.

[0018] In one example, the air extraction port includes air holes formed on the rubber disc and filter cotton that covers the air holes; a film integrally formed with the rubber disc is provided in the air holes on the top side of the filter cotton, and the film has arc-shaped or cross-shaped cuts to form an invisible air extraction port. This design facilitates backflow prevention and dust blocking; specifically, during air extraction, part of the film is lifted upwards under the action of airflow, thereby ensuring smooth air extraction and blocking dust to a certain extent; after air extraction is completed, the lifted film returns to its original position. Since the film is set against the filter cotton, it prevents airflow from returning to the negative pressure space, thereby avoiding pressure loss in the negative pressure space, ensuring the pressure stability of the negative pressure space, and thus ensuring the stability of adsorption and gripping of materials.

[0019] Preferably, the air holes above the film are provided with ball bearings with a diameter smaller than that of the air holes. Specifically, steel balls can be used but are not limited to. During air extraction, the ball bearings float and roll without affecting the extraction. After the extraction is completed, the ball bearings sink and press down on the film, which can better prevent backflow. Specifically, without the use of ball bearings, the good adsorption force can last for about 2 hours; with the use of ball bearings, it can last for about 9 hours.

[0020] Preferably, the arc-shaped cut is a semi-circular cut, which simultaneously achieves a good airflow backflow prevention effect and a dust blocking effect.

[0021] Preferably, the adsorption surface has a groove corresponding to the air hole, and a filter cotton is embedded in the groove. This arrangement facilitates the replacement of the filter cotton, thereby ensuring smooth air extraction during use.

[0022] In one example, the inclined plane makes an angle of 60 degrees with the vertical direction.

[0023] This application also provides a vacuum suction cup, including the suction cup body structure of any of the above examples, and a handle structure fixed to the main keel with the suction surface facing away from it. The handle structure includes a front seat and a rear seat fixed to the main keel, and a handle is mounted on the front seat and the rear seat. A pressure relief switch is provided at the front of the handle.

[0024] The adsorption surface is also provided with a pressure gauge vent hole that communicates with the negative pressure space. A pressure gauge fixed to the main structure of the suction cup is provided on the left rear side of the handle structure. The pressure gauge has a diameter of 25mm. This arrangement makes it easy to read the pressure gauge value, as the pressure gauge is not easily obstructed.

[0025] Preferably, the pressure gauge is located on the suction cup main body structure at an angle of 40-70 degrees to the left and rear of the handle's central axis, which is the optimal position.

[0026] Preferably, the pressure gauge is a luminous pressure gauge, which is convenient for construction in the dark or at night.

[0027] In one example, the pressure gauge readings are divided into red, yellow, and green zones, from lowest to highest. The red zone (0-20 Pa) represents a severe danger zone where work is prohibited; the yellow zone (20-35 Pa) represents a danger warning zone where work should stop; and the green zone (35-100 Pa) represents a safe zone where work is recommended. This arrangement enhances safety during construction.

[0028] In one example, the disc can be, but is not limited to, a circular or oval disc structure.

[0029] The present invention employs the above-described structure and has the following advantages:

[0030] 1. The suction cup main structure of this application is applied to a vacuum suction cup. When using it to adsorb materials, after a negative pressure space is created through the air extraction port, the first annular sealing part and the second annular sealing part form two seals. By combining the selection of the two sealing materials and the setting of the position and height, two effective seals are obtained. Therefore, it can be used to effectively adsorb and grasp various materials such as flat surfaces, smooth surfaces, rough surfaces, textured surfaces, uneven surfaces, and curved surfaces, which greatly improves the safety during construction. For uneven surfaces, it is more suitable for adsorption and grasping of unevenness heights of less than 5mm.

[0031] Specifically, the vertical distance from the bottom of the first annular sealing part to the adsorption cup opening is not less than the vertical distance from the bottom of the second annular sealing part to the adsorption cup opening. This allows the space between the two seals to be effectively vacuumed, thus effectively utilizing the sealing function of the first annular sealing part. If the vertical distance from the bottom of the first annular sealing part to the adsorption cup opening is less than the vertical distance from the bottom of the second annular sealing part to the adsorption cup opening, it will be difficult to vacuum the space between them, thus making it difficult to effectively utilize the sealing effect of the first annular sealing part. The first annular sealing part is located in the middle of the slope rather than at the edge. Its combination with the edge slope can provide better sealing and adsorption, and it is also less likely to affect the adsorption effect of the suction cup on the material due to contact. The bottom side of the second annular sealing part is a corrugated surface, which is conducive to quickly adsorbing the sealing concave and convex surfaces and achieving a better adsorption effect. Specifically, during adsorption, the horizontal vertical adsorption can reach about 180 kg, and the lateral adsorption can reach about 130 kg.

[0032] 2. The combination of the inner and outer annular gravity sealing parts with the second annular sealing part can solve the problem of slippage between the suction cup and the material under inclined or vertical angles, greatly improving the safety of construction. For uneven surfaces, it can be suitable for adsorbing and gripping materials with an unevenness of less than 5mm. The second annular sealing part with a corrugated bottom side is organically and physically combined with the two gravity annular sealing lines, which can easily achieve quick and smooth sealing of uneven surfaces, while maintaining good adsorption force. When all three are directly opposite the main keel, the adsorption effect is better and slippage is less likely.

[0033] Furthermore, a sealing buffer groove is respectively opened on the planes close to the inner side of the inner annular gravity seal and the outer side of the outer annular gravity seal, which is conducive to giving full play to the good adsorption effect of the two gravity sealing lines and the second annular seal. In specific adsorption, horizontal vertical adsorption can reach about 320 kg, and lateral adsorption can reach about 260 kg. Without the above-mentioned technical features, the load value will be slightly less.

[0034] 3. Effectively utilize the material properties of the combined first and second annular sealing parts to achieve excellent adsorption and sealing performance.

[0035] 4. By using two rubber magnet rings, the problem of replacing and maintaining the second annular seal is solved while ensuring the adsorption and sealing effect. The setting of the limit slot further improves the fixation of the second annular seal.

[0036] 5. The concealed air extraction port facilitates backflow prevention and dust blocking. Specifically, during air extraction, part of the film is lifted upwards by the airflow, ensuring smooth air extraction and blocking dust to a certain extent. After air extraction is completed, the lifted film returns to its original position. Since the film is attached to the filter cotton, it prevents the airflow from returning to the negative pressure space, thereby avoiding pressure loss in the negative pressure space and ensuring the pressure stability of the negative pressure space, thus ensuring the stability of the adsorption and gripping of materials.

[0037] A ball bearing with a diameter smaller than that of the pore is placed in the pore above the film. When the air is being pumped out, the ball bearing floats and rolls without affecting the pumping process. After the pumping is completed, the ball bearing sinks and presses down on the film, which can better prevent backflow. Specifically, without the ball bearing, the suction force can be maintained for about 2 hours; with the ball bearing, the suction force can be maintained for about 9 hours.

[0038] The filter cotton is embedded for easy replacement.

[0039] 6. The electric vacuum suction cup provided in this application has a pressure gauge positioned for easy reading; the reading is divided into different design forms, making construction safer. Attached Figure Description

[0040] Figure 1 This is a cross-sectional view of the suction cup main body structure according to one embodiment of the present invention;

[0041] Figure 2 for Figure 1 A scaled bottom view of the second annular seal section.

[0042] Figure 3 This is a cross-sectional view of the suction cup main body structure according to another embodiment of the present invention;

[0043] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;

[0044] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of section B during the air extraction process;

[0045] Figure 6 for Figure 5 Another structural diagram;

[0046] Figure 7 for Figure 5 A bottom view of the non-working state after the filter cotton has been removed;

[0047] Figure 8 This is a schematic diagram of the structure of a vacuum chuck according to one embodiment of the present invention;

[0048] Figure 9 This is a schematic diagram of the structure of a vacuum suction cup according to another embodiment of the present invention.

[0049] In the diagram, 1 is the main structure of the suction cup, 2 is the handle structure, and 3 is the pressure gauge.

[0050] 11. Main keel; 12. Rubber disc; 13. First annular sealing part; 14. Second annular sealing part; 15. Air extraction port; 16. Inner annular gravity sealing part; 17. Outer annular gravity sealing part; 18. First rubber magnet ring; 19. Second rubber magnet ring; 121. Flat surface; 122. Inclined surface; 123. Limiting groove; 124. Groove; 125. Adsorption disc opening; 126. Sealing buffer groove; 151. Air hole; 152. Filter cotton; 153. Film; 154. Ball bearing; 1531. Arc-shaped cut.

[0051] 21. Front seat, 22. Rear seat, 23. Handle, 24. Pressure relief switch. Detailed Implementation

[0052] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0053] like Figure 1-2As shown, in this embodiment, the suction cup main structure includes a main keel 11 and a rubber disc 12 connected to the main keel 11. One side of the rubber disc 12 is an adsorption surface. The middle part of the adsorption surface is a plane 121, and the edge is an outwardly inclined slope 122. The end of the slope forms an adsorption opening 125. A first annular sealing part 13 is provided in the middle of the slope 122. A second annular sealing part 14 is provided at the edge of the plane 121, spaced from the first annular sealing part 13. The bottom side of the second annular sealing part 14 is a corrugated surface. The vertical distance from the bottom of the first annular sealing part 13 to the adsorption opening 125 is not less than the vertical distance from the bottom of the second annular sealing part 14 to the adsorption opening 125.

[0054] The top of the second annular sealing portion 14 is positioned lower than the top of the first annular sealing portion 13;

[0055] The first annular sealing part 13 and the rubber disc 12 are integrally formed and are made of EPDM rubber. The second annular sealing part 14 is made of silicone or memory rubber.

[0056] The first annular sealing portion 13 includes at least two rings of sealing protrusions arranged in sequence;

[0057] The second annular sealing part 14 has an air extraction port 15 on its inner plane. When adsorbing the object to be adsorbed, under the action of external force, the space enclosed by the second annular sealing part 14, the adsorption surface and the object to be adsorbed can be drawn into a negative pressure space through the air extraction port 15.

[0058] The suction cup main structure of this application is applied to a vacuum suction cup. When using it to adsorb materials, after the air extraction port 15 creates a negative pressure space, the first annular sealing part 13 and the second annular sealing part 14 form two seals. By combining the selection of the two sealing materials and the setting of the position and height, two effective seals are obtained, so it can be used to effectively adsorb and grasp various materials such as flat surfaces, smooth surfaces, rough surfaces, textured surfaces, uneven surfaces, and curved surfaces, which greatly improves the safety during construction. For uneven surfaces, it is more suitable for adsorption and grasping of unevenness heights of less than 5mm. Specifically, the vertical distance from the bottom of the first annular sealing part 13 to the adsorption cup opening 125 is not less than the vertical distance from the bottom of the second annular sealing part 14 to the adsorption cup opening 125. This allows the space between the two seals to be effectively vacuumed, thus effectively utilizing the sealing function of the first annular sealing part 13. If the vertical distance from the bottom of the first annular sealing part 13 to the adsorption cup opening 125 is less than the vertical distance from the bottom of the second annular sealing part 14 to the adsorption cup opening 125, it will be difficult to vacuum the space between them, thus making it difficult to effectively utilize the sealing effect of the first annular sealing part 13. The first annular sealing part 13 is located in the middle of the inclined surface rather than at the edge. Its combination with the edge inclined surface can have a better sealing and adsorption effect, and it is also less likely to affect the adsorption effect of the suction cup on the material due to contact. The bottom side of the second annular sealing part 14 is a corrugated surface, which is conducive to quickly adsorbing the sealing concave and convex surfaces and achieving a better adsorption effect. Specifically, during adsorption, the horizontal vertical adsorption can reach about 180 kg, and the lateral adsorption can reach about 130 kg.

[0059] like Figure 3-4As shown, in a specific embodiment, since the material to be adsorbed often needs to be adjusted to an inclined or vertical angle during construction, there is a problem that the suction cup and the material are prone to slippage. To solve this problem, the following settings are made: The main keel 11 is ring-shaped, specifically a circular ring or an elliptical ring, etc. On the plane, there are inner ring gravity sealing parts 16 and outer ring gravity sealing parts 17, which are integrally formed with the adhesive disc on both sides of the second ring sealing part 14. The cross-sections of the inner ring gravity sealing part 16 and the outer ring gravity sealing part 17 are inverted triangular structures. The vertical distance from the bottom of the inner ring gravity sealing part 16 to the adsorption disc opening 125 is greater than the vertical distance from the bottom of the outer ring gravity sealing part 17 to the adsorption disc opening 125. The vertical distance of 25 is not less than the vertical distance from the bottom of the first annular sealing part 13 to the adsorption cup opening 125. The inner annular gravity sealing part 16, the second annular sealing part 14, and the outer annular gravity sealing part 17 correspond to the positions of the main keel 11. The cooperation between the inner annular gravity sealing part 16 and the outer annular gravity sealing part 17 and the second annular sealing part 14 can solve the problem of slippage between the suction cup and the material under inclined or vertical angles, greatly improving the safety of construction. For uneven surfaces, it can be suitable for adsorbing and gripping materials with uneven heights of less than 5m. The second annular sealing part 14, with a corrugated bottom, is organically and physically combined with the two gravity annular sealing lines, which can easily achieve rapid and smooth sealing of uneven surfaces, while maintaining good adsorption force. When the three are directly opposite the main keel 11, the adsorption effect is better and slippage is less likely.

[0060] like Figure 8 Or 9, the disc can be, but is not limited to, a circular or oval disc structure.

[0061] Furthermore, in a preferred embodiment, the vertical distance from the bottom of the inner annular gravity sealing part 16 and the outer annular gravity sealing part 17 to the adsorption cup opening 125 is greater than the vertical distance from the bottom of the second annular sealing part 14 to the adsorption cup opening 125, which can improve the adsorption and gripping effect and further solve the problem of suction cup slippage during construction.

[0062] Furthermore, in a preferred embodiment, a sealing buffer groove 126 is respectively formed on the planes adjacent to the inner side of the inner annular gravity sealing part 16 and the outer side of the outer annular gravity sealing part 17, which facilitates the better adsorption effect of the two gravity sealing lines and the second annular sealing part 14. Specifically, during adsorption, horizontal vertical adsorption can reach approximately 320 kg, and lateral adsorption can reach approximately 260 kg. Without the aforementioned technical features, the load capacity would be slightly less.

[0063] In one specific embodiment, the first annular sealing part 13, the inner annular gravity sealing part 16, the outer annular gravity sealing part 17, and the rubber disc 12 are made of 50-degree EPDM rubber, and the second annular sealing part 14 is made of 10-degree silicone or 80-degree memory rubber. This arrangement can give full play to the superior sealing effect of the first annular sealing part 13 and the second annular sealing part 14, resulting in an unexpected adsorption effect and a significant improvement in adsorption force.

[0064] like Figure 1 As shown in Figure 3, in a specific embodiment, without affecting the adsorption and gripping effect, that is, ensuring the sealing effect, in order to facilitate the replacement and maintenance of the second annular sealing part 14, a first rubber magnet ring 18 is bonded to the bottom of the second annular sealing part 14, and a second rubber magnet ring 19 that cooperates with and attracts the first rubber magnet ring 18 is bonded to the adsorption surface, wherein pressure-sensitive adhesive is used for bonding.

[0065] Furthermore, a limiting groove 123 is formed on the adsorption surface corresponding to the second annular sealing part 14 to engage the second annular sealing part 14, which can further fix the second annular sealing part 14 and prevent it from falling off.

[0066] like Figure 5-7 As shown, in a specific embodiment, the air extraction port 15 includes an air hole 151 formed on the rubber disc 12 and a filter cotton 152 that covers the air hole 151. A film 153 integrally formed with the rubber disc 12 is provided in the air hole 151 at the bottom of the filter cotton 152. The film 153 has an arc-shaped cut 1531 or a cross-shaped cut to form an invisible air extraction port. This design facilitates preventing backflow of air and blocking dust. Specifically, during air extraction, part of the film is lifted upwards under the action of airflow, thereby ensuring smooth air extraction and blocking dust to a certain extent. After air extraction is completed, the lifted film returns to its original position. Because the film is attached to the filter cotton 152, it prevents airflow from returning to the negative pressure space, thereby avoiding pressure loss in the negative pressure space and ensuring the pressure stability of the negative pressure space, thus ensuring the stability of the adsorption and gripping of materials.

[0067] Furthermore, in a preferred embodiment, the arc-shaped cut 1531 is a semi-circular cut, which simultaneously achieves a good airflow backflow prevention effect and a dust blocking effect.

[0068] Furthermore, in a preferred embodiment, a groove 124 is provided on the adsorption surface corresponding to the air hole 151, and a filter cotton 152 is embedded in the groove 124. This arrangement facilitates the replacement of the filter cotton 152, thereby ensuring smooth air extraction during use.

[0069] Furthermore, a preferred embodiment is as follows: the air hole above the film 153 is provided with a ball bearing 154 with a diameter smaller than the diameter of the air hole, specifically, but not limited to, steel balls; during air extraction, the ball bearing 154 floats and rolls without affecting air extraction; after air extraction is completed, the ball bearing 154 sinks down and presses down on the film 153, which can better prevent backflow. Specifically, without the ball bearing 154, the good adsorption force can last for about 2 hours; with the ball bearing 154, it can last for about 9 hours.

[0070] In one specific embodiment, the inclined plane 122 makes an angle of 60 degrees with the vertical direction.

[0071] like Figure 8 As shown, in a specific embodiment, this application also provides a vacuum suction cup, including a suction cup main body structure 1 of any of the above embodiments, and a handle structure 2 fixed to the main keel with its back facing the suction surface. The handle structure 2 includes a front seat 21 and a rear seat 22 fixed to the main keel 1. A handle 23 is mounted on the front seat 21 and the rear seat 22. A pressure relief switch 24 is provided at the front of the handle 23. The suction surface is also provided with a pressure gauge vent hole communicating with the negative pressure space. The pressure gauge vent hole can also be set as an invisible vent hole. A pressure gauge 3 fixed to the suction cup main body structure is provided on the left rear side of the handle structure 2 for measuring the pressure value of the negative pressure space. The pressure gauge 3 has a diameter of 25mm. With this setting, the pressure gauge 3 is not easily obstructed and the pressure gauge value can be read conveniently.

[0072] Furthermore, in a preferred embodiment, the pressure gauge 3 is located on the suction cup main body structure at a position 40-70 degrees to the left and rear of the central axis of the handle 23.

[0073] Furthermore, in a preferred embodiment, the pressure gauge 3 is a luminous pressure gauge, which is convenient for construction in the dark or at night.

[0074] Furthermore, a preferred embodiment is as follows: for construction safety, the pressure gauge can be set as follows: the reading of the pressure gauge 3 is divided into a red background reading area, a yellow background reading area, and a green background reading area in ascending order. The negative pressure in the red background reading area between 0 and 20 Pa is a severely dangerous area where construction is prohibited; the negative pressure in the yellow background reading area between 20 and 35 Pa is a danger warning area where construction should be stopped; and the negative pressure in the green background reading area between 35 and 100 Pa is a safe area where construction is recommended.

[0075] The suction cup main structure or vacuum suction cup in the above embodiments can be applied to both manual suction cups and electric suction cups.

[0076] The specific embodiments described above should not be construed as limiting the scope of protection of this invention. Any alternative modifications or variations made to the embodiments of this invention by those skilled in the art will fall within the scope of protection of this invention. All aspects not detailed in this invention are well-known to those skilled in the art.

Claims

1. A suction cup body structure characterized by, The main keel and the rubber disc connected with the main keel, one side of the rubber disc is the adsorption surface, the middle part of the adsorption surface is a plane, the edge is an outwardly inclined slope, the end of the slope forms the adsorption disc opening, the middle part of the slope is provided with the first annular sealing part, the side of the plane is provided with the second annular sealing part which is spaced from the first annular sealing part, the bottom side of the second annular sealing part is the corrugated surface, the vertical distance from the bottom of the first annular sealing part to the adsorption disc opening is not less than the vertical distance from the bottom of the second annular sealing part to the adsorption disc opening; The first annular sealing part and the rubber disc are integrally formed, the material of the first annular sealing part and the rubber disc is the ethylene-propylene-diene rubber, the material of the second annular sealing part is the silica gel or the memory rubber; The first annular sealing part comprises at least two sealing convex parts arranged in sequence; The plane in the second annular sealing part is provided with the air outlet part, when the object to be adsorbed is adsorbed, the space surrounded by the second annular sealing part, the adsorption surface and the object to be adsorbed can be extracted into the negative pressure space through the air outlet part under the action of the external force; The main keel is annular, the plane of the adsorption surface is further provided with the inner annular gravity sealing part and the outer annular gravity sealing part which are integrally formed with the rubber disc on both sides of the second annular sealing part, the cross section of the inner annular gravity sealing part and the outer annular gravity sealing part is the inverted triangular structure, the vertical distance from the bottom of the inner annular gravity sealing part to the adsorption disc opening is greater than the vertical distance from the bottom of the outer annular gravity sealing part to the adsorption disc opening, the vertical distance from the bottom of the outer annular gravity sealing part to the adsorption disc opening is not less than the vertical distance from the bottom of the first annular sealing part to the adsorption disc opening, the inner annular gravity sealing part, the second annular sealing part and the outer annular gravity sealing part correspond to the position of the main keel.

2. The suction cup body structure according to claim 1, characterized by The vertical distance from the bottom of the inner annular gravity sealing part and the outer annular gravity sealing part to the adsorption disc opening is greater than the vertical distance from the bottom of the second annular sealing part to the adsorption disc opening.

3. The suction cup body structure according to claim 2, characterized in that, The plane close to the inner side of the inner annular gravity sealing part and the outer side of the outer annular gravity sealing part is respectively provided with a sealing buffer groove.

4. The chuck body structure of claim 2, wherein The material of the first annular sealing part, the inner annular gravity sealing part, the outer annular gravity sealing part and the rubber disc is the ethylene-propylene-diene rubber of 50 degrees, the material of the second annular sealing part is the silica gel of 10 degrees or the memory rubber of 80 degrees.

5. The chuck body structure according to any one of claims 1 to 4, characterized in that, The second annular sealing part is detachably connected with the adsorption surface, the first rubber magnet ring is attached to the second annular sealing part, the second rubber magnet ring which is attracted to the first rubber magnet ring is attached to the adsorption surface.

6. The suction cup body structure according to claim 5, characterized in that, The limiting clamping groove is further formed on the adsorption surface corresponding to the second annular sealing part, so as to clamp the second annular sealing part.

7. The suction cup body structure of claim 1, wherein The air outlet part comprises the air hole provided on the rubber disc and the filter cotton which covers the air hole; The rubber sheet which is integrally formed with the rubber disc is provided in the air hole on the top side of the filter cotton, the arc-shaped cut or the cross-shaped cut is provided on the rubber sheet, so as to form the invisible air outlet.

8. The chuck body structure of claim 7, wherein The ball with the diameter smaller than the diameter of the air hole is provided in the air hole above the rubber sheet.

9. The suction cup body structure of claim 7, wherein, The recess is provided on the adsorption surface corresponding to the air hole, the filter cotton is embedded in the recess.

10. The suction cup body structure of claim 1, wherein The angle between the slope and the vertical direction is 60 degrees.

11. A vacuum chuck, characterized by The suction cup body structure comprises the suction cup body structure of any one of claims 1-4, and a handle structure fixed to the main keel and facing away from the adsorption surface, the handle structure comprising a front seat and a rear seat fixed to the main keel, and a handle arranged on the front seat and the rear seat, and a pressure relief switch arranged on the front part of the handle. The adsorption surface is further provided with a pressure gauge vent hole in communication with the negative pressure space, and the left rear side of the handle structure is provided with a pressure gauge fixed to the suction cup body structure.

12. The vacuum chuck according to claim 11, characterized in that The pressure gauge is arranged on the suction cup body structure at a position between 40-70 degrees left rear of the central axis of the handle.

13. The vacuum chuck of claim 11, wherein, The pressure gauge is a luminous pressure gauge.

14. The vacuum chuck of claim 11, wherein, The pressure gauge is divided into a red background number area, a yellow background number area and a green background number area from small to large in order of the number shown, the negative pressure in the red background number area is between 0-20 Pa, which is a severe danger prohibited construction area, the negative pressure in the yellow background number area is between 20-35 Pa, which is a danger warning stop construction area, and the negative pressure in the green background number area is between 35-100 Pa, which is a safe recommended construction area.

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