Sucking disc with elastic negative pressure structure

Abstract

The utility model discloses a suction cup with an elastic negative pressure structure, which is characterized in that a plurality of elastic pressure arms extending downwards from the top wall of a suction cup shell are arranged on the suction cup shell, so that the suction cup has the elastic negative pressure structure capable of self-adaptively adjusting and maintaining a negative pressure state; on one hand, the elastic pressing arms can be elastically unfolded and tightly abut against the back of the suction cup body when the suction cup is subjected to external force through the self-adaptive adjusting capacity, so that the contact area and the sealing performance between the suction cup and an external to-be-attached face are increased, air leakage is effectively prevented, and the adsorption stability is remarkably improved; and on the other hand, external force from different directions can be uniformly dispersed and counteracted, so that a stable adsorption effect can be kept under various conditions. In addition, when the suction cup is in a flattened state, the suction cup can resist the influence of external vibration or slight displacement through uniform distribution and elastic supporting of the elastic pressing arms, and long-time stable suction is kept.

Description

Technical Field

[0001] The utility model relates to the field of suction cups, in particular to a suction cup with an elastic negative pressure structure. Background Art

[0002] Suction cups are products that can be attached to the wall. With the improvement of living standards, people's demands for suction cup products are becoming more and more diversified, and the performance requirements for suction cups are also increasing. Especially in complex and changeable working environments, suction cups not only need to have a stable fixing effect, but also need to be able to adaptively respond to external forces from all directions, such as squeezing and pulling. These external forces may cause the fit between traditional suction cups and the adsorption surface to decrease, thereby affecting the stability and durability of their adsorption.

[0003] Chinese patent announcement number CN219782207U discloses a suction cup bracket, which simplifies the structure of the suction cup through an integrated threaded column and a connecting seat, and introduces a locking device to ensure the firm fixation and compression of the suction cup. It can reduce the overall thickness of the product and improve the stability of the clamping force. However, the above suction cup bracket mainly relies on the locking device to achieve the fixation and compression of the suction cup, and does not adaptively adjust the negative pressure state. When faced with complex and changeable external forces, the above design may not be able to ensure a close fit between the suction cup and the adsorption surface, thereby affecting the adsorption effect. In addition, since the above suction cup bracket does not take into account the force distribution problem under the action of external force, when the suction cup is close to the surface, it may not be able to effectively cope with the extrusion pressure and pulling pressure from all directions, which may cause the suction cup to loosen or fall off in certain areas, reducing its overall stability.

[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 an elastic negative pressure structure.

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

[0007] A suction cup with an elastic negative pressure structure comprises a suction cup shell 1 and a suction cup body 2 connected to the inside of the suction cup shell 1, wherein the suction cup body 2 is used to fit with an external surface to be attached; the suction cup shell 1 is provided with an elastic negative pressure structure capable of adaptively adjusting and maintaining a negative pressure state, wherein the elastic negative pressure structure comprises: a plurality of elastic pressure arms 3 extending downward from the top wall of the suction cup shell 1; the elastic pressure arms 3 can elastically expand when subjected to force and adaptively rebound when not subjected to force, and when the suction cup is in a flattened state, the ends thereof can abut against the back of the suction cup body 2.

[0008] Preferably, the plurality of elastic pressure arms 3 are evenly distributed in an array along the circumferential direction.

[0009] Preferably, the top wall of the suction cup shell 1 is provided with a plurality of openings 11 in a circumferentially uniform array, each opening is provided with a first side wall 111 facing the center of the suction cup shell 1 and closest to the center of the suction cup shell 1, and each elastic pressure arm 3 extends obliquely downwardly by bending from the corresponding first side wall 111 as a starting point.

[0010] Preferably, the diameter of the opening 11 is larger than the extension width of the elastic pressure arm 3 .

[0011] Preferably, the elastic pressure arm 3 is provided with an arc-shaped extension portion 31 extending from the top wall of the suction cup outer shell 1, bending from the inside to the outside and extending downward, and a supporting portion 32 extending downward from the end of the arc-shaped extension portion 31, and the supporting portion 32 is used to abut against the back of the suction cup body 2 when the suction cup is in a flattened state.

[0012] Preferably, the abutting portion 32 is provided with a plane 321 located in the middle and arc surfaces 322 arranged on the left and right sides of the plane 321 .

[0013] Preferably, a hollow layer 6 is formed between the suction cup outer shell 1 and the suction cup body 2 , and the plurality of elastic pressure arms 3 are located in the hollow layer 6 .

[0014] Preferably, the suction cup body 2 includes a rubber-coated part 21 and a skeleton 22 arranged in the rubber-coated part 21; the front side of the rubber-coated part 21 is an adsorption surface that fits with the external surface to be attached, and the periphery of the rubber-coated part 21 is provided with a raised step 211 that can cover a part of the skeleton 22; the raised step 211 is provided with a limiting raised portion 2110 that covers the top of the skeleton 22 and is used to limit the elastic pressure arm 3 when the suction cup is in a flattened state.

[0015] Preferably, an annular reinforcing rib 5 is protruded on the inner side wall of the suction cup housing 1 , and the annular reinforcing rib 5 is formed by protruding continuously in sequence along the outer circumference of the remaining three side walls of all the openings 11 except the first side wall 111 connected to the elastic pressure arm 3 .

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The suction cup of this case has a plurality of elastic pressure arms extending downward from the top wall of the suction cup shell and evenly distributed in an array, so that the suction cup of this case has an elastic negative pressure structure that can adaptively adjust and maintain a negative pressure state; and through the adaptive adjustment ability, on the one hand, when the suction cup is subjected to external force, the elastic pressure arm can be elastically unfolded and tightly pressed against the back of the suction cup body, thereby increasing the contact area and sealing between the suction cup and the external surface to be attached, effectively preventing air leakage and significantly improving the adsorption stability; on the other hand, it can evenly disperse and offset external forces from different directions, so as to ensure that a stable adsorption effect can be maintained under various circumstances. In addition, when the suction cup is in a flattened state, through the uniform distribution and elastic support of the elastic pressure arm, the suction cup can resist the influence of external vibration or slight displacement and maintain stable adsorption for a long time. 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 three-dimensional structural schematic diagram of the suction cup shell in this case.

[0020] Figure 3 It is a top view of the suction cup housing in this case.

[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 4As shown, a suction cup with an elastic negative pressure structure includes a suction cup shell 1 and a suction cup body 2 connected to the inside of the suction cup shell 1, wherein the suction cup body 2 is used to fit with an external surface to be attached; the suction cup shell 1 is provided with an elastic negative pressure structure capable of adaptively adjusting and maintaining a negative pressure state, wherein the elastic negative pressure structure includes: a plurality of elastic pressure arms 3, wherein the plurality of elastic pressure arms 3 extend downward from the top wall of the suction cup shell 1 and are evenly distributed in an array; the elastic pressure arms 3 can be elastically expanded when subjected to force and adaptively rebound when not subjected to force, and when the suction cup is in a flattened state, the end thereof abuts against the back of the suction cup body 2. The back of the suction cup body 2 is the top of the suction cup body 2. In specific implementation, the elastic pressure arms 3 are made of elastic material. In this case, multiple elastic pressure arms 3 are arranged, which can elastically deform when subjected to external pressure so that the suction cup can adaptively adjust its shape and size to better adapt to the contour of the attachment surface; and when a tight fit is formed between the suction cup body 2 and the external surface to be attached, since the end of the elastic pressure arm is tightly against the back of the suction cup body 2, and the elastic pressure arm 3 itself has a certain resilience, they will work together to maintain this negative pressure state, so that when there are slight pressure changes or vibrations outside, the elastic pressure arm 3 can also absorb these changes through its elastic deformation, thereby maintaining the stability of the negative pressure inside the suction cup; thereby realizing the function of adaptively adjusting and maintaining the negative pressure state.

[0024] As described above, the suction cup of this case has a plurality of elastic pressure arms 3 extending downward from the top wall of the suction cup shell 1 and evenly distributed in an array, so that the suction cup of this case has an elastic negative pressure structure that can adaptively adjust and maintain a negative pressure state; and through the adaptive adjustment capability, on the one hand, when the suction cup is subjected to external force, the elastic pressure arms 3 can be elastically unfolded and tightly pressed against the back of the suction cup body 2, thereby increasing the contact area and sealing between the suction cup and the external surface to be attached, effectively preventing air leakage and significantly improving the adsorption stability; on the other hand, it can evenly disperse and offset external forces from different directions, so as to ensure that a stable adsorption effect can be maintained under various circumstances. In addition, when the suction cup is in a flattened state, through the uniform distribution and elastic support of the elastic pressure arms 3, the suction cup can resist the influence of external vibrations or slight displacements and maintain stable adsorption for a long time.

[0025] like Figure 2 and Figure 3As shown, in a specific implementation, the top wall of the suction cup shell 1 is provided with a plurality of openings 11 in a circumferentially uniform array, each opening is provided with a first side wall 111 facing the center of the suction cup shell 1 and closest to the center of the suction cup shell 1, and each elastic pressure arm 3 is bent and extended obliquely downward with the corresponding first side wall 111 as a starting point. In this way, by providing a uniform array of openings 11 on the top wall of the suction cup shell 1, and providing a first side wall 111 in each opening, and the elastic pressure arm 3 is bent and extended obliquely downward from the first side wall 111, so that the elastic pressure arm 3 forms a cantilever structure connected only to one side wall of the opening 11, on the one hand, it is easier to exhaust when pressing down through the opening design, and on the other hand, it can be easier to press down when abutting against the suction cup body 2 through the cantilever structure connected to one side; and the setting of the elastic pressure arm 3 bending and extending obliquely downward enables the elastic pressure arm 3 to deform more smoothly and abut against the back of the suction cup body 2 when the suction cup is subjected to external pressure, so as to transmit and disperse the pressure more evenly, which is conducive to optimizing the negative pressure distribution inside the suction cup and improving the uniformity and stability of the adsorption effect.

[0026] like Figure 3 As shown, in a specific implementation, the diameter of the opening 11 is larger than the extension width of the elastic pressure arm 3, and the extension width is the straight-line distance in the transverse direction from the extension start point to the extension end point of the elastic pressure arm 3. In this way, since the diameter of the opening 11 is larger than the extension width of the elastic pressure arm 3, a larger deformation space is provided for the elastic pressure arm 3, and the elastic pressure arm 3 does not completely block the opening, and the air can flow out smoothly from the opening, thereby improving the adsorption effect.

[0027] like Figure 1 and Figure 2As shown, in a specific implementation, the elastic pressure arm 3 is provided with an arc-shaped extension portion 31 extending from the top wall of the suction cup outer shell 1, which is bent from the inside to the outside and extends downward, and a supporting portion 32 extending downward from the end of the arc-shaped extension portion 31, and the supporting portion 32 is used to abut against the back of the suction cup body 2 when the suction cup is in a flattened state. The supporting portion 32 is provided with a plane 321 located in the middle and arc surfaces 322 arranged on the left and right sides of the plane 321. In this way, through the setting of the arc-shaped extension portion 31 of the elastic pressure arm 3 of this case, the necessary flexibility and deformation ability can be provided to the elastic pressure arm 3 through the arc, and the elastic pressure arm 3 can disperse stress more evenly when subjected to force. The setting of the supporting portion 32 allows the supporting portion to fit tightly on the suction cup body when the suction cup is subjected to external pressure. The abutment portion 32 is provided with a plane 321 in the middle and arc surfaces 322 arranged on the left and right sides of the plane 321. The plane 321 can provide a stable surface that directly contacts the back of the suction cup body, and the arc surface 322 can help to adapt and maintain the sealing effect through slight deformation when there are slight unevenness on the back of the suction cup body, so as to ensure a tight fit on the suction cup body. Moreover, the plane 321 and the arc surface 322 are not easy to cause pressure or damage to the back of the suction cup body when pressing down.

[0028] like Figure 1 As shown, in a specific implementation, a hollow layer 6 is formed between the suction cup outer shell 1 and the suction cup body 2, and the plurality of elastic pressure arms 3 are located in the hollow layer 6. In this way, necessary space can be provided for the plurality of elastic pressure arms 3 under normal conditions, so that the elastic pressure arms 3 are prevented from not contacting other parts when not in a downward pressure state, thereby avoiding wear or damage caused by contact.

[0029] like Figure 1 As shown, the suction cup body 2 includes a rubber-coated part 21 and a skeleton 22 arranged in the rubber-coated part 21; the front of the rubber-coated part 21 is an adsorption surface that fits with the external surface to be attached, and the periphery of the rubber-coated part 21 is provided with a raised step 211 that can cover a part of the skeleton 22; the raised step 211 is provided with a limiting protrusion 2110 that covers the top of the skeleton 22 and is used to limit the elastic pressure arm 3 when the suction cup is in a flattened state. In a specific implementation, the skeleton is a hard rubber skeleton. In this way, through the setting of the limiting protrusion 2110, it can play a role of limiting and blocking when the elastic pressure arm 3 is pressed down and elastically deformed, preventing the elastic pressure arm 3 from being damaged due to excessive deformation, ensuring the service life of the elastic pressure arm 3, and ensuring the stability of the suction cup in this case.

[0030] like Figure 2As shown, in a specific implementation, an annular reinforcing rib 5 is convexly provided on the inner side wall of the suction cup housing 1, and the annular reinforcing rib 5 is formed by continuously protruding in sequence along the outer periphery of the remaining three side walls of all openings 11 except the first side wall 111 connected to the elastic pressure arm 3. Specifically, the annular reinforcing rib 5 extends from a certain point of a side wall of the starting opening as a starting point along the remaining three side walls of each opening 11 except the first side wall, and then extends to a certain point of the adjacent opening 11 and continues to extend according to the extension path of the first opening, and then extends the remaining openings 11 according to the extension path of the first opening until they are connected back to the starting point, thus forming the annular reinforcing rib 5. In this way, by setting the annular reinforcing rib 5, the remaining three side walls of the opening 11 that are not connected to the elastic pressure arm 3 can be strengthened to enhance the structural strength and stability of the suction cup housing 1.

[0031] The workflow of this case is as follows:

[0032] After assembly, the suction cup is in a normal state, and a certain gap is maintained between the elastic pressure arm 3 and the suction cup body 2; when the suction cup shell 1 is pressed down by force, the elastic pressure arm 3 is pressed down synchronously, and the elastic pressure arm 3 gradually contacts the suction cup body 2 and applies pressure; as the pressure increases, the elastic pressure arm 3 undergoes elastic deformation and tightly rests against the suction cup body 2; and during the downward pressure process, the uniform distribution of the elastic pressure arm 3 ensures that the pressure can be evenly transmitted to the suction cup body 2, thereby achieving a good sealing and adsorption effect; after the downward pressure is completed, the elastic pressure arm 3 will adaptively rebound according to the direction of the force, which helps to alleviate the impact of external shock and vibration on the suction cup, and further improve its stability and reliability. In addition, when the suction cup as a whole is subjected to external forces such as pulling, squeezing, etc., each elastic pressure arm 3 will undergo corresponding elastic deformation according to the direction and magnitude of the force, thereby achieving adaptive adjustment and maintaining a negative pressure state.

[0033] As mentioned above, this case protects a suction cup with an elastic negative pressure 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 an elastic negative pressure structure, characterized in that The invention comprises a suction cup shell (1) and a suction cup body (2) connected to the inside of the suction cup shell (1), wherein the suction cup body (2) is used to fit with an external surface to be attached; the suction cup shell (1) is provided with an elastic negative pressure structure capable of adaptively adjusting and maintaining a negative pressure state, wherein the elastic negative pressure structure comprises: a plurality of elastic pressure arms (3) extending downward from the top wall of the suction cup shell (1); the elastic pressure arms (3) are capable of elastically expanding when subjected to force and adaptively rebounding when not subjected to force, and when the suction cup is in a flattened state, the ends of the elastic pressure arms (3) are able to abut against the back of the suction cup body (2).

2. The suction cup with an elastic negative pressure structure according to claim 1, characterized in that: A plurality of elastic pressure arms (3) are evenly distributed in an array along the circumferential direction.

3. The suction cup with an elastic negative pressure structure according to claim 1, characterized in that: The top wall of the suction cup shell (1) is provided with a plurality of openings (11) in a uniform array along the circumferential direction, each opening being provided with a first side wall (111) facing the center of the suction cup shell (1) and closest to the center of the suction cup shell (1), and each elastic pressure arm (3) is bent and extended obliquely downward with the corresponding first side wall (111) as a starting point.

4. The suction cup with an elastic negative pressure structure according to claim 3, characterized in that: The diameter of the opening (11) is greater than the extension width of the elastic pressure arm (3).

5. A suction cup with an elastic negative pressure structure according to any one of claims 1 to 4, characterized in that: The elastic pressure arm (3) is provided with an arc-shaped extension portion (31) extending from the top wall of the suction cup housing (1) and bending from the inside to the outside and extending downward, and a supporting portion (32) extending downward from the end of the arc-shaped extension portion (31), and the supporting portion (32) is used to abut against the back of the suction cup body (2) when the suction cup is in a flattened state.

6. The suction cup with an elastic negative pressure structure according to claim 5, characterized in that: The abutting portion (32) is provided with a plane (321) located in the middle and arc surfaces (322) arranged on the left and right sides of the plane (321).

7. The suction cup with an elastic negative pressure structure according to claim 1, characterized in that: A hollow layer (6) is formed between the suction cup shell (1) and the suction cup body (2), and the plurality of elastic pressure arms (3) are located in the hollow layer (6).

8. The suction cup with an elastic negative pressure structure according to claim 1, characterized in that: The suction cup body (2) comprises a rubber-coated part (21) and a frame (22) arranged in the rubber-coated part (21); the front side of the rubber-coated part (21) is an adsorption surface that fits with an external surface to be attached, and the periphery of the rubber-coated part (21) is provided with a raised step (211) that can cover a part of the frame (22); the raised step (211) is provided with a limiting raised portion (2110) that covers the upper part of the frame (22) and is used to limit the elastic pressure arm (3) when the suction cup is in a flattened state.

9. The suction cup with an elastic negative pressure structure according to claim 3 or 4, characterized in that: An annular reinforcing rib (5) is protruded on the inner side wall of the suction cup housing (1), and the annular reinforcing rib (5) is formed by successively protruding along the outer circumference of the remaining three side walls of all the openings (11) except the first side wall (111) connected to the elastic pressure arm (3).

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