Sucking disc with edge locking structure

Abstract

The utility model discloses a suction cup with an edge locking structure. According to the suction cup, the edge locking structure is formed between the suction cup shell and the back of the rubber coating piece, the pressing and locking effects are achieved, the number of parts is reduced, and therefore the overall thickness of the suction cup product is effectively reduced. The lock teeth of the edge locking structure and the annular protrusion capable of elastically deforming are arranged, so that when the suction cup is attached to the surface, the lock teeth tightly press the annular protrusion to achieve tight engagement, and the vacuum degree in the suction cup can be maintained easily; and the lock teeth continuously apply pressure to the rubber coating piece by clamping the annular bulge, so that the periphery of the suction cup is tightly attached to the surface to be attached, and the suction force of the suction cup is enhanced. By means of the meshing effect between the multiple evenly-distributed locking teeth of the suction cup shell and the rubber coating piece, stress borne by the outside can be dispersed when a heavy object is hung, one-way pressure borne by the suction cup can be dispersed and reduced, and the stability and durability of the suction cup are improved.

Description

Technical Field

[0001] The utility model relates to the field of suction cups, in particular to a suction cup with a locking edge structure. Background Art

[0002] Suction cups are products that can be attached to the wall. In order to achieve a stable clamping and locking effect, existing rubber-coated suction cup products often need to adopt a combination design of three or more parts, which not only increases the complexity and manufacturing cost of the product, but also increases the overall thickness of the product, which is not conducive to miniaturization and lightweight design. In addition, the matching clearance between multiple parts and the limitations of manufacturing accuracy make it difficult to ensure the clamping force of traditional suction cup products, which are easily affected by the external environment and use conditions, such as vibration, temperature changes, etc., resulting in fluctuations and instability of the preload force.

[0003] Chinese patent publication number CN219782207U discloses a suction cup bracket, which simplifies the structure of the suction cup through an integrally formed threaded column and a connecting seat, and introduces a locking device to achieve the fixation and compression of the suction cup. The locking device is composed of a locking part and a compression part, which is fixed to the suction cup through a threaded connection, and the compression part is used to press the end face of the suction cup to enhance the compression effect; the suction cup bracket reduces the number of parts, reduces the product thickness, and improves the stability of the compression force. Although the design of the above document is simplified compared to the traditional multi-component suction cup, the combination of its threaded column, connecting seat and locking device still makes the overall structure relatively complex, increasing the difficulty of manufacturing and assembly; and its threaded connection fastening method may be loosened due to the influence of the use environment, resulting in a decrease in the compression force; in addition, the compression part of the locking device can usually only apply pressure to a specific area of ​​the suction cup, which may cause uneven distribution of the compression force on the suction cup; under long-term use, this uneven compression force may cause damage to the suction cup, affecting its service life and adsorption effect.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model overcomes the shortcomings of the above-mentioned technology and provides a suction cup with a locking edge structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A suction cup with a locking structure comprises a rubber-coated part 1, wherein a frame is provided inside the rubber-coated part 1, and a suction cup shell 3 which covers the rubber-coated part 1 and the frame is connected to the back of the frame; a locking structure is formed between the suction cup shell 3 and the back of the rubber-coated part 1 for realizing the bite between the two when the suction cup is in a flattened state, and the locking structure comprises: a plurality of locking teeth 41 protruding downwardly on the inner wall of the suction cup shell 3 near the outer periphery and evenly distributed in the circumferential direction, and one or more circles of elastically deformable annular protrusions 42 protruding upwardly on the back of the rubber-coated part 1; the locking teeth 41 are used to be pressed into the inside of the annular protrusion 42 when the suction cup is in a flattened state, and the annular protrusion 42 is used to be depressed downward by force when the suction cup is in a flattened state to form a bite between the locking teeth 41.

[0008] Preferably, the annular protrusion 42 is a soft rubber protrusion.

[0009] Preferably, the annular protrusion 42 is provided with a deformation contact portion 5 which is a planar structure when the suction cup is in a normal state and a concave structure when the suction cup is in a flattened state.

[0010] Preferably, a hollow layer 6 is formed between the suction cup shell 3 and the rubber-coated component 1 , and the plurality of locking teeth 41 are located in the hollow layer 6 .

[0011] Preferably, the locking teeth 41 are in a shape that is wide at the top and narrow at the bottom.

[0012] Preferably, the bottom of the locking tooth 41 is provided with a plane contact portion 411 located in the middle and arc contact portions 412 with rounded corners disposed on the left and right sides of the plane contact portion 411 .

[0013] Preferably, the distances between any two adjacent locking teeth 41 are consistent.

[0014] Preferably, the suction cup housing 3 is provided with a bayonet 31 , and the back of the frame is provided with a buckle 21 that cooperates with the bayonet 31 and is engaged with the bayonet 31 .

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The suction cup of this case forms a locking structure between the suction cup shell frame and the back of the rubber-coated component frame, which not only achieves the effect of compression and locking, but also reduces the number of parts, thereby effectively reducing the overall thickness of the suction cup product. The arrangement of the locking teeth frame and the elastically deformable annular protrusion frame of the locking structure enables the locking teeth frame to press the annular protrusion frame to achieve tight engagement when the suction cup is attached to the surface, which is beneficial to maintaining the vacuum inside the suction cup; and the locking teeth frame continuously applies pressure to the rubber-coated component frame by biting the annular protrusion frame, ensuring that the periphery of the suction cup is closely attached to the surface to be attached, so as to enhance the suction force of the suction cup itself. In addition, when the rubber-coated component frame is subjected to the pulling force from the suction cup shell frame in the corresponding directions of the suction cup shell frame, these pulling forces will generate stress inside the suction cup, and through the bite effect between the multiple evenly distributed locking teeth frame of the suction cup shell frame and the rubber-coated component frame, the external stress when hanging heavy objects can be dispersed, which helps to disperse and reduce the unidirectional pressure on the suction cup, and improve the stability and durability of the suction cup.

[0017] 2. The lock teeth in this case are designed to be wide at the top and narrow at the bottom, and can be gradually pressed into the annular protrusion from narrow to wide. As the lock teeth are pressed in, the contact between them and the annular protrusion becomes closer and closer, thereby improving the sealing effect between the suction cup and the adsorbed object, helping to reduce air leakage and enhancing the adsorption force of the suction cup; and the design of the lock teeth that are wide at the top and narrow at the bottom can better disperse stress when subjected to external force, avoiding local damage caused by stress concentration. The flat contact portion at the bottom of the lock teeth provides a stable contact surface, so that the lock teeth can ensure close contact with the annular protrusion during the biting process, effectively reducing air leakage, thereby enhancing the sealing and adsorption stability of the suction cup. The setting of the arc contact portion can reduce friction resistance and stress concentration, making the biting process smoother and more stable, and reducing the wear on the annular protrusion during the pressing process, further improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the suction cup in this case when it is in a normal state.

[0019] Figure 2 It is a structural schematic diagram of the suction cup shell in this case.

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of point A.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the suction cup in this case when it is in a flattened state. DETAILED DESCRIPTION

[0022] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0023] like Figures 1 to 4 As shown, a suction cup with a locking structure comprises a rubber-coated part 1 for contacting a surface to be attached, wherein a frame is provided inside the rubber-coated part 1, and a suction cup shell 3 which covers the rubber-coated part 1 and the frame is connected to the back of the frame; a locking structure for realizing bite between the suction cup shell 3 and the back of the rubber-coated part 1 when the suction cup is in a flattened state is formed, and the locking structure comprises: a plurality of locking teeth 41 which are uniformly distributed in an array along the circumferential direction and protrude downwardly on the inner wall of the suction cup shell 3 near the outer periphery, and one or more circles of elastically deformable annular protrusions 42 which are protruded upwardly on the back of the rubber-coated part 1; the locking teeth 41 are used to be pressed into the inside of the annular protrusion 42 when the suction cup is in a flattened state, and the annular protrusion 42 is used to be depressed downward by force when the suction cup is in a flattened state to form a bite between the locking teeth 41. In specific implementation, the rubber-coated part 1 is wrapped with soft rubber (i.e., annular protrusions) around the back and leaves a gap, the frame 1 can be embedded in the soft rubber on the back, and the front of the rubber-coated part 1 is the attachment surface that contacts the surface to be attached. The frame 1 is a hard rubber frame, and the rubber-coated part 1 and the frame form a suction cup rubber-coated part.

[0024] During specific implementation, the working process of the suction cup is as follows:

[0025] At the beginning, the suction cup is in a normal state. After the suction cup is pressed, the rubber-coated component 1 exhausts air outwards, and the back adsorption surface will be deformed due to contact with the wall surface. At this time, the suction cup shell 3 is pressed down synchronously, and the locking teeth 41 are also pressed down synchronously with the suction cup shell 3; when the bottom surface of the suction cup shell 3 is pressed against the wall surface, only a small amount of air remains in the middle of the suction cup, and the locking teeth 41 continue to apply pressure to the rubber-coated component 1 by biting the annular protrusion 42 to ensure that the periphery of the back adsorption surface of the suction cup is in close contact with the wall surface; and in the process of pressing down until the bottom surface of the suction cup shell 3 is against the wall surface, the locking teeth 41 gradually bite from contact, shallow, and deep, and the annular protrusion 42 is gradually deformed by the action of the locking teeth 41; in the fully compressed state, the locking teeth 41 bite the annular protrusion 42, causing the annular protrusion 42 to deform, and the suction cup shell 3 presses against the rubber-coated component 1 through the locking teeth 41, so that the suction surface of the suction cup is more closely fitted to the wall surface. After the bottom surface of the suction cup shell 3 is pressed down to abut against the wall surface, and the suction surface of the suction cup is completely in contact with the wall surface, the suction cup shell 3 pops up to leave a slight gap.

[0026] As described above, this case forms a locking structure between the suction cup shell 3 and the back of the rubber-coated part 1, which not only achieves the effect of compression and locking, but also reduces the number of parts, thereby effectively reducing the overall thickness of the suction cup product. The arrangement of the locking teeth 41 of the locking structure and the elastically deformable annular protrusion 42 enables the locking teeth 41 to press the annular protrusion 42 to achieve a tight bite when the suction cup is attached to the surface, which is conducive to maintaining the vacuum inside the suction cup; and the locking teeth 41 continuously apply pressure to the rubber-coated part 1 by biting the annular protrusion 42, ensuring that the periphery of the suction cup is close to the surface to be attached, so as to enhance the suction force of the suction cup itself. In addition, when the rubber-coated part 1 is subjected to the pulling force from the suction cup shell 3 in the corresponding directions of the suction cup shell 3, these pulling forces will generate stress inside the suction cup, and through the bite action between the multiple evenly distributed locking teeth 41 of the suction cup shell 3 and the rubber-coated part 1, the stress borne by the outside when hanging heavy objects can be dispersed, which helps to disperse and reduce the unidirectional pressure on the suction cup, and improve the stability and durability of the suction cup.

[0027] As described above, in a specific implementation, the annular protrusion 42 is a soft rubber protrusion. The soft rubber protrusion is a protrusion made of a soft rubber material. In this way, by using soft rubber, the annular protrusion 42 has good flexibility and elasticity, can fit tightly with the lock tooth 41, and enhances the stability of the engagement with the lock tooth 41. In addition, the soft rubber material has good wear resistance and anti-aging properties, and can maintain a stable adsorption effect during long-term use, thereby extending the service life.

[0028] like Figure 1 FIG. 4 is a schematic cross-sectional structure diagram of the suction cup in a normal state, wherein the deformation contact portion 5 of the annular protrusion 42 is a planar structure; Figure 4 It is a schematic diagram of the cross-sectional structure of the suction cup in a flattened state, in which the deformation contact portion 5 of the annular protrusion 42 is a concave structure; thus, the deformation contact portion 5 is designed as a planar structure when the suction cup is in a normal state, which can provide a larger contact area when the locking tooth 41 is pressed down, so that the locking tooth 41 can more easily form an engagement with the annular protrusion 42, and the plane is less likely to cause damage to the locking tooth 41 than the protrusion.

[0029] like Figure 1 As shown, in a specific implementation, a hollow layer 6 is formed between the suction cup shell 3 and the rubber-coated part 1, and a plurality of the locking teeth 41 are located in the hollow layer 6. In this way, the setting of the hollow layer 6 allows space to be left between the suction cup shell 3 and the rubber-coated part 1. When the suction cup contacts and seals the adsorbed object, the air inside the hollow layer 6 can be discharged to form a negative pressure, so that the suction cup can be firmly adsorbed on the object and provide a strong adsorption force. Moreover, a plurality of locking teeth 41 are located in the hollow space, which can also provide the necessary space for the locking teeth under normal conditions, thereby preventing the locking teeth from not contacting other parts when not pressed down, and avoiding wear or damage caused by contact.

[0030] like Figure 3 As shown, in a specific implementation, the locking tooth 41 is in a shape of being wide at the top and narrow at the bottom. The bottom of the locking tooth 41 is provided with a plane contact portion 411 in the middle and arc contact portions 412 with rounded corners disposed on the left and right sides of the plane contact portion 411.

[0031] As described above, the lock tooth 41 is set in a shape that is wide at the top and narrow at the bottom, and can be gradually pressed into the annular protrusion from narrow to wide. As the lock tooth is pressed in, the contact between it and the annular protrusion becomes closer and closer, thereby improving the sealing effect between the suction cup and the adsorbed object, helping to reduce air leakage and enhancing the adsorption force of the suction cup; and the design of the lock tooth that is wide at the top and narrow at the bottom can better disperse stress when subjected to external force, avoiding local damage caused by stress concentration. The flat contact portion 411 at the bottom of the lock tooth provides a stable contact surface, so that the lock tooth can ensure close contact with the annular protrusion during the biting process, effectively reducing air leakage, thereby enhancing the sealing and adsorption stability of the suction cup. The setting of the arc contact portion 412 can reduce friction resistance and stress concentration, making the biting process smoother and more stable, and reducing the wear on the annular protrusion during the pressing process, further improving the service life.

[0032] As a preferred implementation, the spacing between two adjacent locking teeth 41 is consistent. Specifically, the spacing between two adjacent locking teeth 41 can be the width of a single locking tooth 41. In this way, each locking tooth can bear a similar bite force, so that the locking teeth can be more evenly distributed on the annular protrusion during the bite process, which not only reduces the risk of local damage caused by uneven force, but also allows the suction cup to be more stably attached to the object.

[0033] like Figure 4 As shown, in a specific implementation, the suction cup housing 3 is provided with a bayonet 31, and the back of the frame is provided with a buckle 21 that is engaged with the bayonet 31. In this way, the suction cup housing 3 is engaged with the frame, and disassembly and installation are more convenient.

[0034] As mentioned above, this case protects a suction cup with a locking edge structure, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A suction cup with a locking edge structure, characterized in that The invention comprises a rubber-coated part (1), wherein a frame (2) is arranged inside the rubber-coated part (1), and a suction cup shell (3) covering the rubber-coated part (1) and the frame (2) is connected to the back of the frame (2); a locking structure is formed between the suction cup shell (3) and the back of the rubber-coated part (1) for realizing the bite of the two when the suction cup is in a flattened state, and the locking structure comprises: a plurality of locking teeth (41) protruding downwardly on the inner wall of the suction cup shell (3) near the outer circumference and evenly distributed along the circumferential direction, and one or more circles of elastically deformable annular protrusions (42) protruding upwardly on the back of the rubber-coated part (1); the locking teeth (41) are used to be pressed into the inside of the annular protrusion (42) when the suction cup is in a flattened state, and the annular protrusion (42) is used to be depressed downwardly by force when the suction cup is in a flattened state to form a bite between the locking teeth (41).

2. The suction cup with a locking edge structure according to claim 1, characterized in that: The annular protrusion (42) is a soft rubber protrusion.

3. The suction cup with a locking edge structure according to claim 1, characterized in that: The annular protrusion (42) is provided with a deformation contact portion (5) which is a planar structure when the suction cup is in a normal state and a concave structure when the suction cup is in a flattened state.

4. The suction cup with a locking edge structure according to claim 1, characterized in that: A hollow layer (6) is formed between the suction cup shell (3) and the rubber-coated component (1), and the plurality of locking teeth (41) are located in the hollow layer (6).

5. The suction cup with a locking edge structure according to claim 1, characterized in that: The locking teeth (41) are in a shape that is wide at the top and narrow at the bottom.

6. The suction cup with a locking edge structure according to claim 5, characterized in that: The bottom of the locking tooth (41) is provided with a plane contact portion (411) located in the middle and arc contact portions (412) with rounded corners arranged on the left and right sides of the plane contact portion (411).

7. The suction cup with a locking edge structure according to claim 1, characterized in that: The spacing between any two adjacent locking teeth (41) is consistent.

8. The suction cup with a locking edge structure according to claim 1, characterized in that: The suction cup housing (3) is provided with a snap-in opening (31), and the back of the frame (2) is provided with a snap-in buckle (21) that cooperates with the snap-in opening (31) and snaps into place.

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