Vacuum chuck

Abstract

The application provides a vacuum chuck and relates to the technical field of chucks. The vacuum chuck comprises a gland, a reset elastic member, a middle shell and an adsorption sheet. The inside of the middle shell is provided with a pressure bearing plate. The inside of the middle shell is divided into an upper chamber and a lower chamber by the pressure bearing plate. The middle part of the pressure bearing plate is provided with a pressure plate middle hole. The lower surface of the pressure bearing plate is provided with a pressure bearing ring. The outer side of the pressure bearing ring is provided with a pressure relief chamber. The outer side surface of the pressure relief chamber comprises a holding surface and a pressure relief surface. The adsorption sheet comprises a hard adsorption sheet and a soft adsorption sheet. The lower end of the hard adsorption sheet is embedded in the inside of the soft adsorption sheet. The outer edge side of the adsorption surface of the hard adsorption sheet is provided with a pressure relief plate. The pressure relief plate is installed in the pressure relief chamber. The vacuum chuck has the characteristics of simple structure, convenient assembly and low production cost. Through the design of double elastic force, the vacuum chuck has the characteristics of large adsorption force and long-lasting suction force. Through the mode of pressing adsorption and rotating release, the vacuum chuck has the characteristics of convenient and fast installation and use.

Description

Technical Field

[0001] This invention relates to the field of suction cup technology, and in particular to a vacuum suction cup. Background Technology

[0002] Suction cup hooks are tools that use the pressure difference between the inside and outside of an adhesive pad to adhere to objects. They are typically used on smooth surfaces such as walls, glass, and tiles. They are easy to install and remove, protect the wall from damage, and are reusable, making them widely used in both industrial and household applications.

[0003] A simple suction cup hook consists of two parts: a suction cup made of soft rubber and a hook. The suction cup is pressed to expel air from its interior and then adheres to the object. To remove it, you need to manually pry it open or use other tools to pry it open. This type of suction cup has the problems of weak suction force and inconvenient removal.

[0004] Complex suction cup hooks, such as the vacuum suction cup in patent application number 2013105288025, disclose a vacuum suction cup that includes a cover and an adsorption plate, a height adjustment component located between the cover and the adsorption plate, and a pressure seat located between the height adjustment component and the adsorption plate. The height adjustment component, pressure seat, and other structural components are complex in design and difficult to manufacture, resulting in problems such as complex structure, difficulty in assembly, and high production costs. Summary of the Invention

[0005] To address the problems of the prior art, this invention provides a vacuum suction cup, comprising a pressure cap, a reset elastic element, a middle shell, and an adsorption sheet. It features a simple structure, convenient assembly, and low production cost. Through a dual-elasticity design, it possesses strong and long-lasting adsorption force. Furthermore, by using a press-to-adsorb and rotation-to-release mechanism, it offers convenient and quick installation and use.

[0006] Therefore, the technical solution of the present invention is a vacuum suction cup, which includes a pressure cap, a reset elastic element, a middle shell, and an adsorption sheet. The middle shell is provided with a pressure plate inside, which divides the interior of the middle shell into an upper chamber and a lower chamber. The upper chamber is used to install the pressure cap and the reset elastic element, and the lower chamber is used to install the adsorption sheet. The middle part of the pressure plate is provided with a pressure plate central hole, and the lower surface of the pressure plate is provided with a pressure ring. The adsorption sheet includes a hard adsorption sheet and a soft adsorption sheet.

[0007] Furthermore, a decompression chamber is provided on the outer side of the pressure bearing ring. The outer surface of the decompression chamber includes a retaining surface and a decompression surface. The retaining surface is concentric with the outer ring surface of the pressure bearing ring, and the decompression surface is an arc-shaped surface. One end of the decompression surface is connected to the retaining surface, and the other end of the decompression surface extends toward the outer ring surface of the pressure bearing ring.

[0008] Furthermore, the lower end of the rigid suction pad is embedded inside the soft suction pad, or the lower end of the rigid suction pad is attached to the upper surface of the soft suction pad. A decompression plate is provided on the outer edge of the adsorption surface of the rigid suction pad, and the decompression plate is installed in the decompression chamber.

[0009] Furthermore, an annular seat is provided in the middle of the lower surface of the cap, and multiple reinforcing ribs are provided on the outer ring surface of the annular seat.

[0010] Furthermore, the annular seat has a pressure cap connector inside, and the outer surface of the pressure cap connector has multiple pressure cap inserts.

[0011] Furthermore, a reset elastic element is installed between the pressure cover and the middle shell, and the reset elastic element is a spring or a reset sheet.

[0012] Furthermore, a hollow sleeve is provided in the middle of the lower surface of the reset spring, an annular boss is provided in the middle of the inner surface of the sleeve, and multiple spring support feet are provided at the outer edge of the lower surface of the reset spring.

[0013] Furthermore, the lower surface of the adsorption sheet is provided with an adsorption groove, which is spherical or conical in shape.

[0014] Furthermore, multiple ring-shaped suction pad supports are provided above the suction surface of the rigid suction pad.

[0015] Furthermore, a suction plug is provided in the middle of the upper surface of the rigid suction plug, the outer surface of the suction plug is provided with an annular buckle, and the upper end of the suction plug is provided with multiple suction slots spaced apart.

[0016] The beneficial effect of the present invention is that, during the assembly of the vacuum suction cup, a reset spring is placed in the upper chamber of the middle shell, an adsorption plate is installed in the lower chamber of the middle shell, and then the pressure cap connector of the pressure cap is inserted into the inside of the adsorption plate connector of the adsorption plate, thus completing the entire assembly process. Therefore, the present invention has the characteristics of simple structure, convenient assembly, and low production cost.

[0017] When using the vacuum suction cup, it is installed by pressing down the cover. When the cover is pressed down, the cover drives the reset spring to deform downwards, and at the same time, it drives the adsorption plate to deform downwards, expelling air from the adsorption groove at the lower end of the adsorption plate until the adsorption groove is completely in contact with the adsorption surface. At this point, the cover is released, and the adsorption plate returns to its original shape under its own elastic force. The reset spring also returns to its original shape under its own elastic force. Under the action of the dual elastic forces, a vacuum negative pressure is generated between the adsorption plate and the adsorption surface, thereby generating suction force to fix the vacuum suction cup to the adsorption surface. Due to the action of the dual elastic forces, the vacuum suction cup has a strong and long-lasting adsorption force.

[0018] When removing the vacuum suction cup, rotate the middle shell. The decompression plate of the adsorption sheet moves from the holding surface to the decompression surface in the decompression chamber. The decompression surface pushes the decompression plate up, thus peeling off one end of the adsorption sheet. This releases the vacuum pressure between the adsorption sheet and the adsorption surface, allowing the vacuum suction cup to be separated from the adsorption surface and removed. The vacuum suction cup is installed by pressing the cap and removed by rotating the middle shell, making installation and use convenient and quick. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 yes Figure 1 A sectional view;

[0021] Figure 3 yes Figure 1 Exploded view;

[0022] Figure 4 yes Figure 3 Another perspective illustration;

[0023] Figure 5 This is a schematic diagram of the gland structure;

[0024] Figure 6 This is a schematic diagram of the reset spring.

[0025] Figure 7 This is a schematic diagram of the middle shell;

[0026] Figure 8 yes Figure 7 A sectional view;

[0027] Figure 9 This is a schematic diagram of the adsorption sheet structure;

[0028] Figure 10 This is a schematic diagram of the rigid suction plate structure;

[0029] Figure 11 yes Figure 9 Another perspective illustration;

[0030] Figure 12 This is a schematic diagram of the structure of a soft absorbent sheet.

[0031] Explanation of symbols in the diagram:

[0032] 1. Pressure cap; 11. Annular seat; 12. Reinforcing rib; 13. Pressure cap connector; 14. Pressure cap insert; 2. Reset spring; 21. Sleeve; 22. Annular boss; 23. Spring support foot; 3. Middle shell; 31. Pressure plate; 32. Pressure plate central hole; 33. Pressure ring; 34. Decompression chamber; 341. Holding surface; 342. Decompression surface; 4. Rigid suction plate; 41. Suction plate support foot; 42. Suction plate connector; 421. Annular buckle; 422. Suction plate slot; 43. Decompression plate; 431. Decompression groove; 5. Soft suction plate; 51. Adsorption groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-12 As shown, the present invention provides a vacuum suction cup, which includes a pressure cap 1, a middle shell 3, and an adsorption plate. The pressure cap 1 is installed in the upper chamber of the middle shell 3 and is used as a pressing component when installing the vacuum suction cup. The adsorption plate is installed in the lower chamber of the middle shell 3 and is used to generate a vacuum negative pressure between itself and the adsorption surface, thereby generating suction to fix the vacuum suction cup to the adsorption surface. The middle shell 3 is used to install and fix the pressure cap 1 and the adsorption plate, and at the same time, it is used to decompress the adsorption plate. By rotating the middle shell 3, the vacuum negative pressure between the adsorption plate and the adsorption surface is released, thereby separating the vacuum suction cup from the adsorption surface and removing it.

[0035] The lower surface of the pressure cap 1 is provided with an annular seat 11 in the middle. The outer ring surface of the annular seat 11 is provided with a plurality of reinforcing ribs 12. The reinforcing ribs 12 are used to strengthen and fix the annular seat 11 and the lower surface of the pressure cap 1, thereby improving the structural strength and stress resistance of the annular seat 11.

[0036] The annular seat 11 is provided with a pressure cap connector 13 inside. The pressure cap connector 13 is used for the fixed connection between the pressure cap 1 and the adsorption sheet. The pressure cap connector 13 is cylindrical in shape. Multiple pressure cap inserts 14 are provided on the outer surface of the pressure cap connector 13. The upper end of the pressure cap insert 14 is connected to and fixed between the annular seat 11 and the pressure cap connector 13, which also serves to strengthen and fix the structure.

[0037] A reset elastic element is provided between the pressure cap 1 and the middle shell 3. The reset elastic element can be a spring or a reset spring 2, etc. The reset elastic element plays a reset and rebound role after the pressure cap 1 is pressed down. Since the lower end of the pressure cap 1 is fixedly connected to the adsorption sheet through the pressure cap joint 13, the reset elastic element can increase the reset pull of the adsorption sheet, thereby increasing the adsorption force and adsorption durability of the adsorption sheet.

[0038] The reset spring 2 is made of elastic material. A hollow sleeve 21 is provided in the middle of the lower surface of the reset spring 2. When the reset spring 2 is installed, it is sleeved on the outside of the pressure cap joint 13 through the hollow sleeve 21. An annular boss 22 is provided in the middle of the inner surface of the sleeve 21. The annular boss 22 is used for snapping and fixing the adsorption sheet.

[0039] Multiple spring support feet 23 are provided on the outer edge of the lower surface of the reset spring 2. Since the elastic force of the elastic material is proportional to its deformation, the spring support feet 23 provide sufficient deformation space for the pressing deformation of the reset spring 2, ensuring that the reset spring 2 has sufficient elastic force.

[0040] The inner shell 3 is provided with a pressure plate 31, which divides the inner shell 3 into an upper chamber and a lower chamber. The upper chamber is used to install the pressure cap 1 and the reset elastic element, and the lower chamber is used to install the adsorption sheet. The pressure plate 31 is provided with a pressure plate central hole 32 in the middle. The lower surface of the pressure plate 31 is provided with a pressure ring 33, which is used to support the downward pressure of the adsorption sheet. The outer side of the pressure ring 33 is provided with a decompression chamber 34. The outer surface of the decompression chamber 34 includes a retaining surface 341 and a decompression surface 342. The retaining surface 341 is concentric with the outer ring surface of the pressure ring 33. The decompression surface 342 is an arc-shaped surface. One end of the decompression surface 342 is connected to the retaining surface 341, and the other end of the decompression surface 342 extends towards the outer ring surface of the pressure ring 33. That is, one end of the decompression surface 342 is connected to the retaining surface 341, and the other end of the decompression surface 342 is tightened inward.

[0041] The adsorption sheet includes a rigid adsorption sheet 4 and a flexible adsorption sheet 5. The lower end of the rigid adsorption sheet 4 is embedded inside the flexible adsorption sheet 5, that is, the flexible adsorption sheet 5 is wrapped around the lower end of the rigid adsorption sheet 4 through a secondary injection molding process. The lower surface of the adsorption sheet has an adsorption groove 51, which is spherical or conical in shape. Both the rigid adsorption sheet 4 and the flexible adsorption sheet 5 are made of elastic material. The combination of the rigid adsorption sheet 4 and the flexible adsorption sheet 5 increases the adsorption force and adsorption durability of the adsorption sheet.

[0042] In one specific embodiment, the adsorption sheet includes a rigid adsorption sheet 4 and a soft adsorption sheet 5. The rigid adsorption sheet 4 is attached to the top of the soft adsorption sheet 5. Both the rigid adsorption sheet 4 and the soft adsorption sheet 5 are made of elastic material. The superposition of the rigid adsorption sheet 4 and the soft adsorption sheet 5 increases the adsorption force and adsorption durability of the adsorption sheet.

[0043] The rigid suction plate 4 has multiple ring-shaped suction plate support legs 41 above its suction surface. After the suction plate is assembled, the suction plate support legs 41 cooperate with the pressure ring 33. The upper surface of the rigid suction plate 4 has a suction plate connector 42 in the middle. The outer surface of the suction plate connector 42 has a ring buckle 421. The upper end of the suction plate connector 42 has multiple spaced suction plate slots 422.

[0044] The outer edge of the adsorption surface of the rigid suction plate 4 is provided with a decompression plate 43, and decompression grooves 431 are provided on both sides of the decompression plate 43. The decompression plate 43 is used to release the vacuum negative pressure between the adsorption plate and the adsorption surface, thereby separating the vacuum suction cup from the adsorption surface and removing it.

[0045] Both the suction plate support 41 and the decompression plate 43 are located outside the soft suction plate 5. The suction plate support 41 is tightly fitted with the pressure ring 33, and the decompression plate 43 is installed in the decompression chamber 34.

[0046] When assembling the vacuum suction cup of the present invention, a reset spring 2 is placed in the upper chamber of the middle shell 3, and an adsorption plate is installed in the lower chamber of the middle shell 3. The suction plate connector 42 of the rigid suction plate 4 is fastened to the sleeve 21 of the reset spring 2 through an annular buckle 421 and an annular boss 22. Then, the pressure plate connector 13 of the pressure plate 1 is inserted into the inside of the suction plate connector 42 to complete the entire assembly process. Therefore, the present invention has the characteristics of simple structure, convenient assembly and low production cost.

[0047] After the pressure cap 1 is assembled, the pressure cap connector 13 and the suction plate connector 42 are in a tightened and fixed connection state, and the suction plate connector 42 and the sleeve 21 of the reset spring 2 are in a snap-fit ​​fixed state. At this time, the upper ends of the suction plate connector 42 and the reset spring 2 are tightly fitted with the pressure cap 1, and the pressure cap insert 14 is inserted into the suction plate slot 422.

[0048] When the suction plate connector 42 and the sleeve 21 of the reset spring 2 are in a snap-fit ​​fixed state, the suction plate support 41 and the pressure bearing ring 33 are tightly fitted together, and the decompression plate 43 is located in the decompression chamber 34. When the decompression plate 43 is in the initial state, it is located at the holding surface 341. When the decompression plate 43 is in the decompression state, it is located at the decompression surface 342. The specific decompression process is as follows: by rotating the middle shell 3, the position of the decompression plate 43 in the decompression chamber 34 moves from the holding surface 341 to the decompression surface 342. Since the other end of the decompression surface 342 tightens inward, the decompression surface 342 will push the decompression plate 43, thereby opening one end of the suction plate. By rotating the middle shell 3, the vacuum negative pressure between the suction plate and the suction surface is released, thereby separating the vacuum suction cup from the suction surface and removing it.

[0049] When in use, the vacuum suction cup of the present invention is installed by pressing down the cover 1. When the cover 1 is pressed down, since the cover 1 is fastened and fixedly connected with the reset spring 2 and the adsorption sheet, the cover 1 drives the reset spring 2 to deform downward, and at the same time drives the adsorption sheet to deform downward, expelling the air in the adsorption groove 51 at the lower end of the adsorption sheet, until the adsorption groove 51 is completely attached to the adsorption surface after deformation. At this time, the cover 1 is released, and the adsorption sheet recovers its deformation under its own elastic force. The reset spring 2 also recovers its deformation under its own elastic force. Under the action of the double elastic force, a vacuum negative pressure is generated between the adsorption sheet and the adsorption surface, thereby generating suction to fix the vacuum suction cup to the adsorption surface. Due to the action of the double elastic force, the vacuum suction cup has a large and long-lasting adsorption force.

[0050] When removing the vacuum suction cup, rotate the middle shell 3. The decompression plate 43 of the adsorption sheet moves from the holding surface 341 to the decompression surface 342 in the decompression chamber 34. As the other end of the decompression surface 342 tightens inward, it pushes the decompression plate 43 up, thereby peeling off one end of the adsorption sheet. This releases the vacuum pressure between the adsorption sheet and the adsorption surface, allowing the vacuum suction cup to be separated from the adsorption surface and removed. The vacuum suction cup is installed by pressing the cover and removed by rotating the middle shell, making installation and use convenient and quick.

[0051] The vacuum suction cup of this invention is a brand-new type of vacuum suction cup. Compared with existing vacuum suction cups, it avoids complex structural forms and adopts a simple structure, realizing a brand-new usage method of press-to-install and rotation-to-release. It solves the problem of insufficient suction force in traditional press-to-install and the problems of complex structure and inconvenient assembly in vacuum suction cups that require rotation to install and release.

[0052] However, the above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A vacuum suction cup, characterized in that, The device includes a pressure cap, a reset elastic element, a middle shell, and an adsorption sheet. The middle shell has a pressure plate inside, which divides the interior of the middle shell into an upper chamber and a lower chamber. The upper chamber is used to install the pressure cap and the reset elastic element, and the lower chamber is used to install the adsorption sheet. The pressure plate has a central hole in its center, and a pressure ring on its lower surface. The adsorption sheet includes a rigid adsorption sheet and a soft adsorption sheet. A decompression chamber is located outside the pressure ring. The outer surface of the decompression chamber includes a retaining surface and a decompression surface. The retaining surface is concentric with the outer ring surface of the pressure ring, and the decompression surface is arc-shaped. One end of the decompression surface is connected to the retaining surface, and the other end extends towards the outer ring surface of the pressure ring. A decompression plate is located on the outer edge of the adsorption surface of the rigid adsorption sheet. The decompression plate is installed in the decompression chamber, and decompression grooves are provided on both sides of the decompression plate.

2. A vacuum suction cup according to claim 1, characterized in that, The lower end of the rigid suction pad is embedded inside the soft suction pad, or the lower end of the rigid suction pad is attached to the upper surface of the soft suction pad.

3. A vacuum suction cup according to claim 1, characterized in that, The lower surface of the cover is provided with an annular seat in the middle, and the outer ring surface of the annular seat is provided with multiple reinforcing ribs.

4. A vacuum suction cup according to claim 3, characterized in that, The annular seat has a pressure cap connector inside, and the outer surface of the pressure cap connector has multiple pressure cap inserts.

5. A vacuum suction cup according to claim 1, characterized in that, The reset elastic element is installed between the pressure cover and the middle shell, and the reset elastic element is a spring or a reset spring sheet.

6. A vacuum suction cup according to claim 5, characterized in that, The lower surface of the reset spring has a hollow sleeve in the middle, the inner surface of the sleeve has an annular boss in the middle, and the outer edge of the lower surface of the reset spring has multiple spring feet.

7. A vacuum suction cup according to claim 1, characterized in that, The lower surface of the adsorption sheet is provided with an adsorption groove, which is either spherical or conical in shape.

8. A vacuum suction cup according to claim 7, characterized in that, The rigid suction pad has multiple ring-shaped suction pad supports above its adsorption surface.

9. A vacuum suction cup according to claim 8, characterized in that, The hard absorber The upper surface of the sheet is provided with a suction connector in the middle, the outer surface of the suction connector is provided with an annular buckle, and the upper end of the suction connector is provided with multiple suction slots spaced apart.

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