Thermoplastic elastomer sucker
By combining a thermoplastic polyurethane protective layer, a carbon fiber support layer, and a high-viscosity gel bonding layer, the problems of easy aging and poor structural adhesion of traditional suction cup materials are solved, enabling stable adsorption of the suction cup on complex surfaces and convenient assembly and disassembly.
Patent Information
- Application Number
- CN202520428146.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional suction cup materials are prone to aging and are temperature sensitive. Their structural design cannot effectively adhere to complex surfaces, resulting in short service life, poor adsorption stability, and inconvenient assembly and disassembly.
The suction cup employs a combination design of a thermoplastic polyurethane protective layer, a carbon fiber support layer, an airtight layer, and a high-viscosity gel bonding layer, along with a detachable connection structure, to enhance its weather resistance, adhesion, and sealing performance.
It extends the lifespan of the suction cup, improves the adsorption stability and success rate on complex surfaces, and is convenient and quick to connect.
Smart Images

Figure CN223868379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elastomer suction cup technology, specifically to a thermoplastic elastomer suction cup. Background Technology
[0002] In the field of adsorption devices, traditional suction cups have long played a vital role in industrial production, daily life, and numerous technological applications. Currently, most common traditional suction cups are made of materials such as silicone and nitrile rubber. Their working principle is primarily based on vacuum negative pressure; by squeezing out the air inside the suction cup, the external atmospheric pressure enables adsorption of objects.
[0003] However, traditional suction cups have gradually revealed many obvious limitations in practical use. From a material perspective, while silicone has a certain degree of flexibility, it is prone to aging and cracking when exposed to ultraviolet radiation or oil contamination for extended periods. Its lifespan is often only about 6-12 months, which not only increases usage costs but also frequently affects the continuity of production or use. Nitrile rubber suction cups are quite sensitive to temperature changes. They harden and lose their elasticity in low-temperature environments (below -10℃), while softening easily in high-temperature environments (above 60℃), leading to a significant decrease in adsorption capacity or even adsorption failure, severely limiting their application in certain special environments.
[0004] In terms of structural design, traditional suction cups mostly adopt a flat-bottom structure. This structure has a acceptable adsorption effect on flat objects, but its adhesion is seriously insufficient when facing curved or rough surfaces. According to statistics, the success rate of traditional suction cups on such complex surfaces is only between 65% and 75%, which cannot meet the needs of some working scenarios with high requirements for adsorption stability.
[0005] In existing technologies, silicone is prone to aging and cracking when exposed to ultraviolet light or oil for a long time, with a service life of only 6-12 months. Nitrile rubber is prone to hardening at low temperatures and softening at high temperatures, leading to adsorption failure. In addition, existing suction cups are inconvenient to replace, requiring multiple structures or bolts for disassembly and assembly. Therefore, this device provides a thermoplastic elastomer suction cup. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a thermoplastic elastomer suction cup to solve the aforementioned technical problems.
[0007] The present invention adopts the following technical solution: a thermoplastic elastomer suction cup, including a suction cup body, a connecting block fixedly installed on the top of the suction cup body, and a storage groove opened on the top of the connecting block;
[0008] A spring is fixedly installed on the bottom inner wall of the storage slot, an insert block is fixedly installed on the top of the spring, and two limiting blocks are fixedly installed on the top of the connecting block.
[0009] A connecting insert is provided above the connecting block, and two positioning slots and a slot are provided on the top of the connecting insert.
[0010] The suction cup body includes a protective outer layer, a reinforcing middle layer, and an inner layer. The reinforcing middle layer is fixedly installed on one side of the protective outer layer, and the inner layer is fixedly installed on one side of the reinforcing middle layer.
[0011] As a further improvement to the above solution, the protective outer layer includes a thermoplastic polyurethane protective layer and a silica auxiliary adsorption layer, wherein the silica auxiliary adsorption layer is fixedly installed on one side of the thermoplastic polyurethane protective layer.
[0012] As a further improvement to the above solution, the reinforced intermediate layer includes a carbon fiber support layer and a foamed thermoplastic elastomer support layer, wherein the foamed thermoplastic elastomer support layer is fixedly installed on one side of the carbon fiber support layer.
[0013] As a further improvement to the above solution, the inner layer includes an airtight layer and a high-viscosity gel bonding layer, wherein the high-viscosity gel bonding layer is fixedly installed on one side of the airtight layer.
[0014] As a further improvement to the above solution, the carbon fiber support layer is made of carbon fiber, and the foamed thermoplastic elastomer support layer is made of foamed thermoplastic elastomer.
[0015] As a further improvement to the above solution, the thermoplastic polyurethane protective layer is made of thermoplastic polyurethane, and the silica-assisted adsorption layer is made of silica-assisted material.
[0016] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:
[0017] 1. The airtight layer ensures a good sealing environment inside the suction cup, maintaining a vacuum negative pressure. It is the key inner layer for achieving the adsorption function, improving the suction cup's adsorption force and stability, reducing the decrease in adsorption force caused by air leakage, and enabling the suction cup to maintain the adsorption state for a long time. The high-viscosity gel bonding layer can better adhere to the surface of the object when the suction cup comes into contact with it, filling tiny gaps and pores, further enhancing the sealing effect. It also improves the suction cup's adaptability to objects of different shapes and surface conditions, making the adsorption tighter and more reliable.
[0018] 2. Positioning the connecting insert through the positioning groove and the limiting block allows the connecting insert to slide into the inside of the connecting block. Rotating the connecting insert allows the limiting block to lock the connecting insert in place, and the spring drives the insert to slide into the inside of the slot. This allows the suction cup body to be connected tightly to the connecting insert through the connecting block. When disassembly is required, simply press the insert and rotate the connecting insert to disengage the connecting insert from the inside of the connecting block, making the connection of the device convenient and quick. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a partial three-dimensional structural diagram of the connecting block in this utility model;
[0022] Figure 3 This is a partial three-dimensional structural diagram of the thermoplastic polyurethane protective layer in this utility model.
[0023] Figure 4 This is a schematic diagram of the exploded portion of the high-viscosity gel bonding layer in this utility model.
[0024] Figure Labels
[0025] 1. Suction cup body; 2. Connecting block; 3. Storage slot; 4. Spring; 5. Insert block; 6. Limiting block; 7. Connecting insert; 8. Positioning slot; 9. Slot; 10. Protective outer layer; 11. Reinforced intermediate layer; 12. Inner layer; 13. Thermoplastic polyurethane protective layer; 14. Silica auxiliary adsorption layer; 15. Carbon fiber support layer; 16. Foamed thermoplastic elastomer support layer; 17. Airtight layer; 18. High-viscosity gel bonding layer. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0028] This utility model embodiment provides a thermoplastic elastomer suction cup, including a suction cup body 1, a connecting block 2 fixedly installed on the top of the suction cup body 1, and a storage groove 3 opened on the top of the connecting block 2;
[0029] A spring 4 is fixedly installed on the bottom inner wall of the storage slot 3, and an insert block 5 is fixedly installed on the top of the spring 4. Two limit blocks 6 are fixedly installed on the top of the connecting block 2.
[0030] A connecting insert 7 is provided above the connecting block 2. Two positioning slots 8 are provided on the top of the connecting insert 7, and a slot 9 is provided on the top of the connecting insert 7.
[0031] The suction cup body 1 includes a protective outer layer 10, a reinforcing middle layer 11, and an inner layer 12. The reinforcing middle layer 11 is fixedly installed on one side of the protective outer layer 10, and the inner layer 12 is fixedly installed on one side of the reinforcing middle layer 11.
[0032] Furthermore, the connecting insert 7 is positioned by the positioning groove 8 and the limiting block 6, allowing the connecting insert 7 to slide into the inner side of the connecting block 2. Rotating the connecting insert 7 allows the limiting block 6 to limit and lock the connecting insert 7, and the spring 4 drives the insert 5 to slide into the inner side of the slot 9. This allows the suction cup body 1 to be connected tightly to the connecting insert 7 through the connecting block 2. When disassembly is required, simply press the insert 5 and rotate the connecting insert 7 to disengage the connecting insert 7 from the inner side of the connecting block 2, making the connection of the device convenient and quick.
[0033] In a further preferred embodiment of the present invention, the protective outer layer 10 includes a thermoplastic polyurethane protective layer 13 and a silica auxiliary adsorption layer 14, wherein the silica auxiliary adsorption layer 14 is fixedly installed on one side of the thermoplastic polyurethane protective layer 13.
[0034] Furthermore, the thermoplastic polyurethane protective layer 13, as the outermost protective layer of the suction cup, is in direct contact with the external environment, protecting the internal structure from the effects of ultraviolet rays, chemicals, dust, and abrasion; it significantly extends the service life of the suction cup, reduces aging and damage caused by external factors, and enables the suction cup to maintain stable performance even in harsh environments; the silica-assisted adsorption layer 14 increases the friction and adhesion with the surface of the adsorbed object during the adsorption process, helping to improve the adsorption force; even if the surface of the adsorbed object has slight unevenness or roughness, it can achieve more firm adsorption, improving the success rate and stability of adsorption.
[0035] In a further preferred embodiment of the present invention, the reinforced intermediate layer 11 includes a carbon fiber support layer 15 and a foamed thermoplastic elastomer support layer 16, wherein the foamed thermoplastic elastomer support layer 16 is fixedly installed on one side of the carbon fiber support layer 15.
[0036] Furthermore, the carbon fiber support layer 15 provides the main structural support for the suction cup, enhancing its overall strength and resistance to deformation; it maintains the shape stability of the suction cup when subjected to large pressure or external force; the foamed thermoplastic elastomer support layer 16 prevents the suction cup from failing due to deformation, ensuring the reliability of the adsorption process; and it acts as a buffer when the suction cup comes into contact with the object being adsorbed, reducing the impact force on the object being adsorbed and the suction cup itself.
[0037] Effect: Prevents scratches or damage to the surface of the object being attracted due to excessive impact, while protecting the internal structure of the suction cup and extending its service life.
[0038] In a further preferred embodiment of the present invention, the inner layer 12 includes an airtight layer 17 and a high-viscosity gel bonding layer 18, with the high-viscosity gel bonding layer 18 fixedly installed on one side of the airtight layer 17.
[0039] Furthermore, the airtight layer 17 ensures a good sealing environment inside the suction cup, maintaining a vacuum negative pressure. It is the key inner layer 12 for realizing the adsorption function, improving the adsorption force and stability of the suction cup, reducing the decrease in adsorption force due to air leakage, and enabling the suction cup to maintain the adsorption state for a long time. The high-viscosity gel bonding layer 18 can better adhere to the surface of the object when the suction cup comes into contact with the adsorbed object, filling tiny gaps and pores, further enhancing the sealing effect. It improves the adaptability of the suction cup to objects with different shapes and surface conditions, making the adsorption tighter and more reliable.
[0040] In a further preferred embodiment of the present invention, the carbon fiber support layer 15 is made of carbon fiber, and the foamed thermoplastic elastomer support layer 16 is made of foamed thermoplastic elastomer.
[0041] Furthermore, the carbon fiber support layer 15 is made of carbon fiber reinforced thermoplastic composite material. Carbon fiber has the characteristics of high strength and high modulus, which can effectively enhance the rigidity and support capacity of the material.
[0042] In a further preferred embodiment of this utility model, the thermoplastic polyurethane protective layer 13 is made of thermoplastic polyurethane, and the silica-assisted adsorption layer 14 is made of silica-assisted material.
[0043] Furthermore, the thermoplastic polyurethane protective layer 13 is made of thermoplastic polyurethane material with high UV resistance and chemical corrosion resistance. TPU has good abrasion resistance, flexibility and tear resistance, and can effectively resist the erosion of the external environment; the silica-assisted adsorption layer 14 is a thermoplastic elastomer with added nano-sized silica particles; the addition of nano-silica enhances the surface roughness and friction of the material.
[0044] The specific operation involves positioning the connecting insert 7 via the positioning groove 8 and the limiting block 6, allowing the connecting insert 7 to slide into the inner side of the connecting clip 2. Rotating the connecting insert 7 causes the limiting block 6 to lock and limit its position, while the spring 4 causes the insert 5 to slide into the inner side of the slot 9. This allows the suction cup body 1 to be tightly connected to the connecting insert 7 via the connecting clip 2. When disassembly is required, simply press the insert 5 and rotate the connecting insert 7 to disengage it from the inner side of the connecting clip 2, making the connection of the device convenient and quick. The dense layer 17 ensures a good sealing environment inside the suction cup and maintains a vacuum negative pressure. It is the key inner layer 12 for realizing the adsorption function, improves the adsorption force and stability of the suction cup, reduces the decrease in adsorption force caused by air leakage, and enables the suction cup to maintain the adsorption state for a long time. The high-viscosity gel bonding layer 18 can better adhere to the surface of the object when the suction cup comes into contact with the object being adsorbed, fills tiny gaps and pores, and further enhances the sealing effect. It improves the adaptability of the suction cup to objects with different shapes and surface conditions, making the adsorption tighter and more reliable.
[0045] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A thermoplastic elastomer suction cup, characterized in that: include; The suction cup body (1) has a connecting block (2) fixedly installed on its top, and the connecting block (2) has a storage groove (3) on its top. A spring (4) is fixedly installed on the bottom inner wall of the storage slot (3), and a plug (5) is fixedly installed on the top of the spring (4). Two limiting blocks (6) are fixedly installed on the top of the connecting block (2). A connecting insert (7) is provided above the connecting block (2), and two positioning grooves (8) are provided on the top of the connecting insert (7), and a slot (9) is provided on the top of the connecting insert (7); The suction cup body (1) includes a protective outer layer (10), a reinforcing middle layer (11) and an inner layer (12). The reinforcing middle layer (11) is fixedly installed on one side of the protective outer layer (10), and the inner layer (12) is fixedly installed on one side of the reinforcing middle layer (11).
2. The thermoplastic elastomer suction cup as described in claim 1, characterized in that: The protective outer layer (10) includes a thermoplastic polyurethane protective layer (13) and a silica-assisted adsorption layer (14), wherein the silica-assisted adsorption layer (14) is fixedly installed on one side of the thermoplastic polyurethane protective layer (13).
3. The thermoplastic elastomer suction cup as described in claim 1, characterized in that: The reinforced intermediate layer (11) includes a carbon fiber support layer (15) and a foamed thermoplastic elastomer support layer (16), wherein the foamed thermoplastic elastomer support layer (16) is fixedly installed on one side of the carbon fiber support layer (15).
4. A thermoplastic elastomer suction cup as described in claim 1, characterized in that: The inner layer (12) includes an airtight layer (17) and a high-viscosity gel bonding layer (18), wherein the high-viscosity gel bonding layer (18) is fixedly installed on one side of the airtight layer (17).
5. A thermoplastic elastomer suction cup as described in claim 3, characterized in that: The carbon fiber support layer (15) is made of carbon fiber, and the foamed thermoplastic elastomer support layer (16) is made of foamed thermoplastic elastomer.
6. A thermoplastic elastomer suction cup as described in claim 2, characterized in that: The thermoplastic polyurethane protective layer (13) is made of thermoplastic polyurethane, and the silica-assisted adsorption layer (14) is made of silica-assisted material.