A suction cup device with adjustable suction

Abstract

The utility model provides a kind of adjustable suction force sucking disc device, including sucking disc seat, rear shell, piston structure, driving mechanism, elastic reset structure and outer cover shell.Sucking disc seat front end is equipped with first adsorption surface, and inside is formed first accommodating cavity;Rear shell is connected with sucking disc seat rear end, and inside is equipped with second accommodating cavity with first accommodating cavity intercommunication;Piston structure includes piston body and the threaded rod connected with it slidingly set in first accommodating cavity, threaded rod is worn second accommodating cavity and is fixed in piston body;Driving mechanism is located rear shell rear end, and is threadedly connected with threaded rod, for driving piston body axial movement;Elastic reset structure is set in second accommodating cavity;Outer cover shell is sleeved in sucking disc seat and rear shell outside, and is surrounded with first adsorption surface and forms negative pressure space, and this negative pressure space is communicated with first accommodating cavity, for forming negative pressure by piston body movement, and the outer cover shell is equipped with hook.The structure of the device is simple, and the adsorption effect is better, and the applicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of adsorption and fixing device technology, and in particular to a suction cup device with adjustable suction force. Background Technology

[0002] Suction cup devices are widely used in daily life and industrial installation scenarios for temporary fixation or detachable hanging on smooth surfaces. However, existing suction cup devices generally suffer from the following problems: Firstly, the suction force is fixed, resulting in poor adaptability. Existing suction cup structures typically rely on the material elasticity and size design of the suction cup body to form the suction force. Once designed, this suction force is not adjustable and is difficult to adjust according to different installation surfaces or usage requirements. This leads to insufficient suction force when the surface is not smooth or uneven, making it easy for the suction cup to fall off. Furthermore, when frequent disassembly is required, the suction may be too tight, making operation difficult and resulting in poor ease of use.

[0003] Secondly, the negative pressure formation mechanism is simplistic, resulting in unstable adsorption. Most common suction cups currently employ a pressure-and-exhaust method, where internal air is expelled by forcefully pressing the suction cup, creating negative pressure between the suction cup and the mounting surface for adsorption. However, this method is highly dependent on the pressing operation, and the sealing effect is limited by the tightness of the suction cup's edge. It is prone to negative pressure leakage or insufficient adsorption force, especially when reused or when small particles are present on the surface, making it difficult to meet stability requirements.

[0004] In summary, existing suction cup devices still have significant technical bottlenecks in terms of adjustable adsorption force and reliable negative pressure control, and there is an urgent need for a suction cup device with improved structure, adjustable and stable adsorption effect to solve these problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a suction cup device with adjustable suction force and better adsorption effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable suction cup device, characterized in that it comprises: a suction cup base, a rear housing, a piston structure, a drive structure, an elastic reset structure, and an outer cover; the front end of the suction cup base is provided with a first adsorption surface for adhering to the mounting surface, and the interior of the suction cup base is surrounded to form a first accommodating cavity extending axially; one end of the rear housing is connected to the rear end of the suction cup base, and the interior of the rear housing is provided with a second accommodating cavity communicating with the first accommodating cavity; the piston structure includes a piston body slidably disposed in the first accommodating cavity and a threaded rod connected thereto, the threaded rod passing through the second accommodating cavity and fixedly connected to the piston body; the drive structure is disposed at the rear end of the rear housing and threadedly connected to the threaded rod, for driving the piston body to move axially by rotation; the elastic reset structure is disposed in the second accommodating cavity, one end of which abuts against the rear housing, and the other end abuts against the piston body; the outer cover is sleeved on the outside of the suction cup base and the rear housing, the front end of which extends to the front of the first adsorption surface and forms a negative pressure space between itself and the first adsorption surface, the negative pressure space communicating with the first accommodating cavity, for generating negative pressure when the piston body moves; the outer cover is provided with a hook.

[0007] Furthermore, the rear outer periphery of the rear housing is provided with an annular toothed groove structure, and the drive structure includes a rotating handwheel and a limiting gear. The limiting gear is set in the inner cavity of the rotating handwheel and sleeved on the toothed groove structure, and is used to realize step-by-step limit adjustment when the rotating handwheel rotates.

[0008] Furthermore, a friction pad is provided between the limiting gear and the rear housing to provide frictional resistance during rotation.

[0009] Furthermore, the handwheel is provided with a threaded connection part in the middle, which has an internal thread structure for threaded connection with the threaded rod.

[0010] Furthermore, the outer circumference of the rotating handwheel is provided with an anti-slip part to enhance the grip friction when manually rotating it.

[0011] Furthermore, a limiting support ring is provided inside the rear housing, and the elastic reset structure is a helical compression spring, with one end of the spring abutting against the limiting support ring and the other end abutting against the piston body.

[0012] Furthermore, the limiting support ring is provided with an anti-rotation mating hole in the middle, and the threaded rod is provided with a mating part that mates with the anti-rotation mating hole. The mating part is at least partially provided in the anti-rotation mating hole to prevent the threaded rod from rotating with the drive structure when it moves axially.

[0013] Furthermore, a sealing ring is embedded on the outer peripheral surface of the piston body. The sealing ring is used to seal against the inner wall of the first receiving cavity to prevent air leakage.

[0014] Furthermore, the front end of the suction cup seat is provided with a sealing cover assembly, which is installed at the opening of the first receiving cavity. The front end face of the sealing cover assembly is provided with a groove, and the groove is provided with a second adsorption surface. The sealing cover assembly is provided with multiple drainage ports in the circumference to connect the negative pressure space with the first receiving cavity.

[0015] Furthermore, the hooks include two, which are respectively disposed on the outer surface of the outer casing and are symmetrically arranged with respect to the axial center line of the suction cup device. The two hooks are located in the lower region of the outer casing.

[0016] The aforementioned adjustable suction cup device enables active adjustment of the negative pressure inside the suction cup, allowing for flexible control of the suction force according to different usage scenarios, thus enhancing adaptability and practicality. Compared to the traditional pressure-type exhaust method for creating negative pressure, this device employs a piston suction principle, resulting in stronger sealing, more stable negative pressure, and effectively improved suction reliability. The rotating handwheel in the drive structure, combined with the limiting gear and toothed structure, forms a stepped adjustment mechanism. Simultaneously, the limiting support ring and anti-rotation structure prevent the threaded rod from rotating with the handwheel, thereby ensuring smooth axial movement of the piston body and high operational precision. Furthermore, the overall structure of the device is detachable for easy maintenance. The negative pressure chamber formed at the front end of the outer casing enhances the suction force, and the outer casing is equipped with hooks, expanding the suction cup's mounting function and improving overall performance. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the suction cup device provided by this utility model; Figure 2 This is an exploded view of the suction cup device provided by this utility model; Figure 3 This is a cross-sectional view of the suction cup device provided by this utility model. Figure 4 This is a front view of the rear housing provided according to the present invention; Figure 5 This is a front view of the suction cup holder provided according to this utility model. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figures 1 to 3As shown, this application provides an adjustable suction cup device, comprising: a suction cup base 1, with a first adsorption surface at its front end for adhering to a mounting surface, and a first accommodating cavity 11 extending axially inside the suction cup base 1; a rear housing 2, one end of which is connected to the rear end of the suction cup base 1, and a second accommodating cavity communicating with the first accommodating cavity 11 inside the rear housing 2; a piston structure 3, including a piston body 31 slidably disposed within the first accommodating cavity 11 and a threaded rod 32 connected thereto, the threaded rod 32 passing through the second accommodating cavity and fixedly connected to the piston body 31; and a drive mechanism 4. Located at the rear end of the rear housing 2 and threadedly connected to the threaded rod 32, it is used to drive the piston body 31 to move axially by rotation; the elastic reset structure 5 is located in the second receiving cavity, with one end abutting against the rear housing 2 and the other end abutting against the piston body 31; the outer cover 6 is sleeved on the outside of the suction cup seat 1 and the rear housing 2, with its front end extending to the front of the first adsorption surface and forming a negative pressure space 100 between it and the first adsorption surface, the negative pressure space 100 communicating with the first receiving cavity 11, and used to generate negative pressure when the piston body 31 moves; the outer cover 6 is provided with a hook 7.

[0020] The adjustable suction cup device provided in this embodiment, through the setting of a piston structure 3 controlled by a drive mechanism 4 and the negative pressure space 100 connecting the first receiving cavity 11 and the outer casing 6, allows the user to precisely control the suction force of the suction cup through manual adjustment. Compared with existing suction cup structures that rely on material elasticity or pressure-induced air release to create negative pressure, this device has the advantages of strong controllability and high adaptability. This structure makes the suction force no longer fixed, improving its adaptability to different surface materials and smoothness conditions, avoiding the problems of falling off due to insufficient suction force or disassembly difficulties due to excessive suction force, and significantly improving the flexibility and convenience of use. At the same time, the use of mechanical drive to create negative pressure effectively reduces the dependence on pressing operations, enhancing the repeatability and stability of the suction process. The closed structure of the negative pressure space, combined with the sealing design, helps to maintain the negative pressure state, reduces air leakage, improves the overall suction reliability and service life, and overcomes the technical bottleneck of unstable suction effect in traditional suction cups during repeated use.

[0021] like Figure 2As shown, the rear housing 2 has an annular toothed groove structure 21 on its outer periphery at the rear end. The drive mechanism 4 includes a rotating handwheel 41 and a limiting gear 42. The limiting gear 42 is located inside the rotating handwheel 41 and sleeved on the toothed groove structure 21, used to achieve stepped limit adjustment when the rotating handwheel 41 rotates. This structure significantly improves the controllability and operating feel of the adsorption force adjustment. Through the design of the stepped limiting structure, users can obtain clear graded feedback during rotation adjustment, avoiding adjustment errors caused by excessive rotation or excessive angle, and enhancing the accuracy and stability of adjustment. At the same time, this limiting structure can also prevent the adsorption force from becoming unbalanced due to accidental rotation during transportation or operation, improving the safety and reliability of the product. The overall structure takes into account both adjustment sensitivity and operational stability, solving the problems of no positioning feedback and low adjustment accuracy in traditional rotating structures.

[0022] like Figure 2 As shown, a friction pad 43 is provided between the limit gear 42 and the rear housing 2 to provide frictional resistance during rotation. By providing the friction pad 43, the friction control capability of the limit gear 42 during rotation is effectively enhanced, improving the stability and tactile feedback of the handwheel during rotation, and preventing excessive slippage or rebound during adjustment. This structure not only improves the adjustment experience but also extends the service life of the gear and tooth groove, reducing the risk of wear caused by frequent operation. Furthermore, the friction pad has good pressure resistance and fatigue resistance, helping to maintain long-term stable limit function and improving the safety and reliability of the product.

[0023] like Figure 2 and Figure 3 As shown, a threaded connection part 44 is provided in the middle of the rotating handwheel 41. The threaded connection part 44 has an internal thread structure for threaded connection with the threaded rod 32. By setting the threaded connection part 44 in the middle of the rotating handwheel 41, stable and efficient power transmission between the handwheel and the threaded rod 32 is achieved. The rotary-linear conversion structure facilitates intuitive operation by the user and allows for adjustment of the adsorption force without complex tools or multiple structures.

[0024] like Figure 2 As shown, the outer circumference of the rotating handwheel 41 is provided with an anti-slip part 45 to enhance the grip friction when manually rotating it. This structure not only enhances the user-friendliness of the device but also effectively reduces the risk of misoperation or adjustment errors caused by slippage, improving overall safety and accuracy. Furthermore, the anti-slip design achieves improved operational performance without requiring additional power or complex structures, offering advantages of simplicity and significant effectiveness, making it particularly suitable for repetitive adjustments in various scenarios such as home and industrial settings.

[0025] like Figure 2As shown, a limiting support ring 22 is provided inside the rear housing 2, and the elastic reset structure 5 is a helical compression spring. One end of the spring abuts against the limiting support ring 22, and the other end abuts against the piston body 31. The combination of the limiting support ring 22 and the helical compression spring constructs a simple and stable reset system. Compared to traditional negative pressure adsorption structures without a reset function, this embodiment can achieve automatic piston reset without requiring manual pulling or pushing back by the user, improving the operating efficiency and ease of use of the device. Simultaneously, this structure helps maintain negative pressure control accuracy in frequent use scenarios, avoiding problems such as insufficient suction or inability to release due to piston position drift, and enhancing the response speed and consistency of the adsorption and release processes.

[0026] like Figure 4 As shown, the limiting support ring 22 has an anti-rotation mating hole in the middle, and the threaded rod 32 has a mating part 33 that mates with the anti-rotation mating hole. The mating part 33 is at least partially disposed in the anti-rotation mating hole to prevent the threaded rod 32 from rotating with the drive mechanism 4 when moving axially. By setting the anti-rotation mating structure, the motion control capability of the drive mechanism 4 on the threaded rod 32 is significantly improved, so that it only moves axially and does not rotate with the rotating handwheel 41, avoiding mechanical damage or loss of control of the adsorption force caused by structural torsion.

[0027] like Figure 2 As shown, a sealing ring 34 is embedded on the outer peripheral surface of the piston body 31. The sealing ring 34 is used to seal against the inner wall of the first receiving cavity 11 to prevent air leakage. The sealing ring 34 significantly improves the sealing performance of the suction cup device during the formation and maintenance of negative pressure, effectively solving the problem of suction force attenuation or suction cup failure caused by air leakage.

[0028] like Figure 5 As shown, the front end of the suction cup base 1 is provided with a sealing cover assembly 12, which is installed at the opening of the first receiving cavity 11. The front face of the sealing cover assembly 12 has a groove, within which a second adsorption surface is provided. The sealing cover assembly 12 also has multiple drainage ports 13 arranged circumferentially to connect the negative pressure space 100 with the first receiving cavity 11. The sealing cover assembly 12 not only improves the structural strength of the front end of the suction cup device but also enhances the local adhesion and sealing effect of the adsorption surface through the design of the groove and the second adsorption surface, effectively improving the overall adsorption capacity. The introduction of the drainage ports 13 ensures the efficiency and uniformity of negative pressure transmission, overcoming the uneven or delayed adsorption caused by single-point exhaust. During installation, the 12 can be fitted with nail-free adhesive to adapt to different wall surfaces for double fixation, improving the fixing effect. Furthermore, after the suction cup solid adhesive has a certain service life and ages and fails, it can be re-fixed to the wall by applying nail-free adhesive, increasing the product's service life, reducing usage costs for consumers, and reducing after-sales hassles for manufacturers.

[0029] like Figure 1As shown, there are two hooks 7, each disposed on the outer surface of the outer casing 6, and symmetrically arranged with respect to the axial center line of the suction cup device. The two hooks 7 are located in the lower region of the outer casing 6. By setting two symmetrical hooks 7, the suspension function of the suction cup device is significantly enhanced, enabling dual-point support and effectively improving the stability of the load, avoiding instability such as swaying and rotation that can occur when a single hook structure is suspended with heavy objects. At the same time, the symmetrical arrangement helps to distribute the suction force evenly, avoiding problems such as suction cup warping and air leakage caused by uneven force, thus improving safety and load reliability. The reasonable placement of the hooks 7 in the lower region makes it convenient for users to hang and retrieve items without interfering with the negative pressure formation area, which is conducive to expanding the application scenarios of the suction cup device, such as in kitchens, bathrooms, and car interiors.

[0030] The above description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A suction cup device with adjustable suction force, characterized in that, include: The suction cup base (1) has a first adsorption surface at its front end for adhering to the mounting surface, and the suction cup base (1) is surrounded by a first receiving cavity (11) extending axially. The rear housing (2) is connected at one end to the rear end of the suction cup seat (1), and the rear housing (2) has a second receiving cavity that communicates with the first receiving cavity (11); The piston structure (3) includes a piston body (31) slidably disposed in the first receiving cavity (11) and a threaded rod (32) connected thereto. The threaded rod (32) passes through the second receiving cavity and is fixedly connected to the piston body (31). The drive mechanism (4) is located at the rear end of the rear housing (2) and is threadedly connected to the threaded rod (32) for rotating to drive the piston body (31) to move axially. An elastic reset structure (5) is disposed in the second receiving cavity, with one end abutting against the rear housing (2) and the other end abutting against the piston body (31). The outer casing (6) is fitted outside the suction cup seat (1) and the rear casing (2), with its front end extending to the front of the first adsorption surface and forming a negative pressure space (100) between it and the first adsorption surface. The negative pressure space (100) is connected to the first receiving cavity (11) and is used to form a negative pressure when the piston body (31) moves. The outer casing (6) is provided with hooks (7).

2. The adjustable suction cup device according to claim 1, characterized in that, The rear housing (2) has an annular toothed groove structure (21) on its outer periphery. The drive mechanism (4) includes a rotating handwheel (41) and a limiting gear (42). The limiting gear (42) is located in the inner cavity of the rotating handwheel (41) and sleeved on the toothed groove structure (21) to achieve step-by-step limiting adjustment when the rotating handwheel (41) rotates.

3. The adjustable suction cup device according to claim 2, characterized in that, A friction pad (43) is provided between the limiting gear (42) and the rear housing (2) to provide frictional resistance during rotation.

4. The adjustable suction cup device according to claim 2, characterized in that, The rotating handwheel (41) is provided with a threaded connection part (44) in the middle. The threaded connection part (44) has an internal thread structure and is used to connect with the threaded rod (32) in a threaded engagement.

5. The adjustable suction cup device according to claim 4, characterized in that, The outer circumferential surface of the rotating handwheel (41) is provided with an anti-slip part (45) to enhance the grip friction when manually rotating.

6. The adjustable suction cup device according to claim 1, characterized in that, The rear housing (2) is provided with a limiting support ring (22), and the elastic reset structure (5) is a helical compression spring. One end of the spring abuts against the limiting support ring (22), and the other end abuts against the piston body (31).

7. The adjustable suction cup device according to claim 6, characterized in that, The limiting support ring (22) has an anti-rotation mating hole in the middle, and the threaded rod (32) has a mating part (33) that mates with the anti-rotation mating hole. The mating part (33) is at least partially disposed in the anti-rotation mating hole to prevent the threaded rod (32) from rotating with the drive mechanism (4) when it moves axially.

8. The adjustable suction cup device according to claim 1, characterized in that, A sealing ring (34) is embedded on the outer peripheral surface of the piston body (31). The sealing ring (34) is used to seal against the inner wall of the first receiving cavity (11) to prevent air leakage.

9. The adjustable suction cup device according to claim 1, characterized in that, The suction cup seat (1) is provided with a sealing cover assembly (12) at the front end. The sealing cover assembly (12) is installed at the opening of the first receiving cavity (11). Its front end face is provided with a groove, and a second adsorption surface is provided in the groove. The sealing cover assembly (12) is provided with multiple drainage ports (13) in the circumferential direction to connect the negative pressure space (100) with the first receiving cavity (11).

10. The adjustable suction cup device according to claim 1, characterized in that, The hooks (7) include two, which are respectively disposed on the outer surface of the outer casing (6) and are symmetrically arranged with respect to the axial center line of the suction cup device. The two hooks (7) are located in the lower region of the outer casing (6).

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