Negative pressure adsorption device and suction cup

Abstract

The utility model relates to the technical field of adsorption fixing devices, in particular to a negative pressure adsorption device and a suction cup. The negative pressure adsorption device comprises a shell, a suction cup and an air extractor, the suction cup is fixedly connected with the shell, the suction cup is provided with a concave cavity, the suction cup is used for being attached to a to-be-adsorbed wall face so that a closed space can be formed in the concave cavity, a first flow channel is formed in the cavity wall of the concave cavity, and the concave cavity comprises a first part and a second part; the second part is located on the radial outer side of the first part, and the first runner is used for communicating the first part with the second part; the suction cup is provided with an air hole located in the first part, and the air exhaust device exhausts air in the concave cavity through the air hole. The first part and the second part of the concave cavity are communicated through the first flow channel in the air exhaust process, so that the situation that the first part is attached to the wall surface when the suction cup deforms, and air in the second part is continuously exhausted is avoided; the arrangement of the first flow channel improves the air exhaust effect, increases the pressure difference inside and outside the sucker, and improves the adsorption force of the sucker.

Description

Technical Field

[0001] The utility model relates to the technical field of adsorption and fixing devices, in particular to a negative pressure adsorption device and a suction cup. Background Art

[0002] Negative pressure devices can be used as a fixing tool. They generally include a suction cup and use the negative pressure between the cup and the wall to fix the object. This device has the advantages of easy installation, no damage to the wall, and is reusable.

[0003] Negative pressure suction devices generate suction force by creating a vacuum inside the suction cup. However, in some applications, this can be insufficient. For example, when the load is heavy, the suction cup can become loose or even detach from the wall. To increase the suction force, increasing the suction cup's surface area is a possible approach. However, this increases raw material costs and can make it unsuitable for use on narrow surfaces. Utility Model Content

[0004] The utility model mainly solves the problem of insufficient adsorption force of a negative pressure adsorption device.

[0005] According to the first aspect, an embodiment provides a negative pressure adsorption device, including a shell, a suction cup and an exhaust device, the suction cup is fixedly connected to the shell, the suction cup is provided with a concave chamber, the concave chamber is open toward a side away from the shell, the suction cup is used to fit with the wall to be adsorbed to form a closed space in the concave chamber, the concave chamber includes a first part and a second part, the second part is located radially outside the first part, a first flow channel is provided on the cavity wall of the concave chamber, the first flow channel is used to connect the first part with the second part; the exhaust device is arranged inside the shell, the suction cup is provided with an air hole located in the first part, the air hole is connected to the exhaust device, and the exhaust device is used to extract the gas in the concave chamber through the air hole.

[0006] In some embodiments, the first flow channel extends in a radial direction of the suction cup.

[0007] In some embodiments, a plurality of the first flow channels are provided, and the plurality of the first flow channels are circumferentially spaced apart on the suction cup.

[0008] In some embodiments, a plurality of protrusions are provided on the cavity wall of the concave cavity, and the protrusions extend from the first portion to the second portion, and the first flow channel is formed between two adjacent protrusions.

[0009] In some embodiments, a groove is provided on the cavity wall of the concave cavity, the groove extends from the first portion to the second portion, and the groove forms the first flow channel.

[0010] In some embodiments, a second flow channel is provided on the cavity wall of the concave cavity, the second flow channel is arranged to cross the first flow channel and is connected to the first flow channel, and the first flow channel and the second flow channel are used to connect various parts of the concave cavity.

[0011] In some embodiments, the first flow channel extends radially along the suction cup, and the second flow channel is an annular flow channel, which is circumferentially arranged on the suction cup.

[0012] In some embodiments, multiple groups of protrusions are provided on the suction cup, and each group of protrusions is arranged in a circular array on the suction cup. Two adjacent groups of protrusions are spaced apart in the radial direction of the suction cup, and the second flow channel is formed between the two adjacent groups of protrusions. In each group of protrusions, the first flow channel is formed between two adjacent protrusions.

[0013] In some embodiments, the suction cup is provided with a wave-shaped structure extending along the circumference of the suction cup.

[0014] In some embodiments, the negative pressure adsorption device includes a seal, and a groove is provided on the edge of the suction cup. The seal is arranged in the groove and is used to seal and fit with the wall surface.

[0015] In some embodiments, the negative pressure adsorption device includes a bracket, which is used to fix the object, and the bracket is rotatably connected to the shell to adjust the placement angle of the object.

[0016] According to the second aspect, an embodiment provides a suction cup, which is the suction cup in the negative pressure adsorption device described in any of the above embodiments.

[0017] According to the negative pressure adsorption device of the above embodiment, the suction cup can fit with the wall to form a closed space in the concave chamber, and the exhaust device can extract the air in the concave chamber. The suction cup is deformed during the exhaust process. The first flow channel arranged on the suction cup can connect the first part and the second part of the concave chamber to avoid the first part fitting with the wall when the suction cup is deformed, thereby hindering the continued extraction of gas from the second part; the provision of the first flow channel can improve the exhaust effect, increase the pressure difference between the inside and outside of the suction cup, and thereby improve the adsorption force of the suction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional view of an embodiment of the negative pressure adsorption device of the present invention;

[0019] Figure 2 for Figure 1 A front view of the negative pressure adsorption device;

[0020] Figure 3 for Figure 1 Right view of the negative pressure adsorption device;

[0021] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0022] Figure 5 for Figure 1 A top view of the negative pressure adsorption device;

[0023] Figure 6 for Figure 1 A bottom view of the negative pressure device in FIG.

[0024] Figure 7 for Figure 1 A three-dimensional view of the negative pressure device from another angle;

[0025] Figure 8 This is a three-dimensional view of another embodiment of the negative pressure adsorption device of the present invention;

[0026] Figure 9 for Figure 8 A three-dimensional view of the medium negative pressure adsorption device from another angle.

[0027] Reference numerals:

[0028] 1. Shell; 2. Suction cup; 21. Concave chamber; 211. First part; 212. Second part; 22. First flow channel; 23. Air hole; 24. Protrusion; 25. Second flow channel; 3. Vacuum device; 4. Sealing element; 5. Bracket; 51. Magnetic element; 52. Solar panel; 53. Rotating shaft; 6. Starting element. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0030] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0031] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0032] In a negative pressure suction device, the suction cup's holding force depends on its area and the pressure differential inside and outside the cup. Increasing the cup's area increases raw material costs and reduces its applicability. Since atmospheric pressure in the operating environment is fixed, it's necessary to reduce the pressure inside the cup to increase the pressure differential. Providing flow channels within the cup connects its various components, allowing for more complete discharge of gas within the cup, reducing pressure within the cup and improving its holding force.

[0033] It should be noted that the placement of the negative pressure adsorption device shown in the following figures is only used to illustrate its structure and should not be understood as limiting its usage orientation. For example, the negative pressure adsorption device can be used to secure a mobile phone in a car: the suction cup at one end of the housing faces downward and is adsorbed on the car body, while the bracket at the other end of the housing faces upward and is used to place the phone. In other application scenarios, the negative pressure adsorption device can also be arranged with the suction cup facing upward and the bracket facing downward.

[0034] Please refer to Figure 1-Figure 5 In one embodiment, a negative pressure adsorption device is provided, including a shell 1, a suction cup 2 and an air extraction device 3.

[0035] The suction cup 2 is fixedly connected to the shell 1. The suction cup 2 is provided with a concave chamber 21. The concave chamber 21 opens toward the side away from the shell 1. The suction cup 2 is used to fit the wall to be adsorbed to form a closed space in the concave chamber 21. The shape of the suction cup 2 can be round, square, etc. The material of the suction cup 2 can be a flexible material, such as rubber, silicone, soft PVC (Polyvinyl Chloride), etc. The connection method between the suction cup 2 and the shell 1 can be injection molding. Specifically, a snap-fit ​​structure can be provided on the suction cup 2, and the shell 1 is fixed to the snap of the suction cup 2 by injection molding. After the suction cup 2 fits the wall, the gas in the concave chamber 21 can be extracted by the vacuum device 3, or the gas in the concave chamber 21 can be discharged by squeezing the suction cup 2, so that the suction cup 2 is fixed to the wall under the action of the internal and external pressure difference.

[0036] A first flow channel 22 is provided on the wall of the concave chamber 21. The concave chamber 21 includes a first portion 211 and a second portion 212. The second portion 212 is located radially outward of the first portion 211. The first flow channel 22 is used to connect the first portion 211 and the second portion 212. The air extraction device 3 is disposed within the housing 1. The suction cup 2 is provided with an air hole 23 located in the first portion 211. The air hole 23 is connected to the air extraction device 3, and the air extraction device 3 is used to extract the gas in the concave chamber 21 through the air hole 23.

[0037] The radially outward position is not limited to circular suction cups 2. For suction cups of other shapes, such as square ones, the second portion 212 being located radially outward of the first portion 211 can be understood as: the first portion 211 being located in the middle area of ​​the concave chamber 21, and the second portion 212 being located on the periphery of the first portion 211. The first flow channel 22 is used to allow gas within the concave chamber 21 to circulate. When extracting gas from the concave chamber 21, gas within the concave chamber 21 can be extracted regardless of whether the air hole 23 is located in the first portion 211 or the second portion 212.

[0038] The first flow channel 22 provided on the suction cup 2 can connect the first part 211 of the concave chamber 21 with the second part 212, thereby preventing the first part 211 from adhering to the wall when the suction cup 2 is deformed, thereby hindering the continued extraction of gas from the second part 212; the provision of the first flow channel 22 can improve the exhaust effect, increase the pressure difference between the inside and outside of the suction cup 2, and thereby improve the adsorption force of the suction cup 2.

[0039] In some embodiments, please refer to Figure 1-Figure 5 The suction cup 2 is circular in shape, with air holes 23 provided in the first portion 211. The first flow channel 22 extends radially along the suction cup 2 and connects the first portion 211 with the second portion 212 of the concave chamber 21. When air is drawn through the air holes 23, the air in the first portion 211, which is closest to the air holes 23, is drawn out first. The middle portion of the suction cup 2 is in contact with the wall, and the first flow channel 22 allows the air in the second portion 212 to be drawn out further.

[0040] In other embodiments, the first flow channel 22 may also be in a spiral shape or a broken line shape, as long as the first portion 211 is connected to the second portion 212 .

[0041] In some embodiments, please refer to Figure 1-Figure 5The suction cup 2 is circular in shape, with the air holes 23 provided in the first portion 211. Multiple first flow channels 22 are provided, and the multiple first flow channels 22 are arranged circumferentially on the suction cup 2. Specifically, the first flow channels 22 extend from the first portion 211 to the second portion 212, and the multiple first flow channels 22 extend radially from the first portion 211 to the second portion 212. The number of first flow channels 22 can be two, three, five, etc., and adjacent first flow channels 22 can have the same angle or different angles, as long as they function to connect the first portion 211 and the second portion 212.

[0042] When air is extracted through the air holes 23 of the first part 211, the gas in the second part 212 can flow into the first part 211 along the multiple first flow channels 22 and be extracted. The exhaust process is smoother, a lower pressure can be reached inside the suction cup 2, and a larger pressure difference is formed with the outside of the suction cup 2, thereby improving the adsorption force of the suction cup 2.

[0043] In some embodiments, please refer to Figure 1-Figure 5 The concave chamber 21 is provided with a plurality of protrusions 24 on its wall. The protrusions 24 extend from the first portion 211 to the second portion 212, with the first flow channel 22 formed between two adjacent protrusions 24. Specifically, the protrusions 24 can be fan-shaped. During the process of evacuating the concave chamber 21, the protrusions 24 gradually conform to the wall surface, while the grooves between two adjacent protrusions 24 form the first flow channel 22, allowing gas to flow from the second portion 212 to the first portion 211. In other embodiments, the protrusions 24 can also be triangular, trapezoidal, or other shapes.

[0044] In some embodiments, a groove is provided on the wall of the concave chamber 21, extending from the first portion 211 to the second portion 212, forming the first flow channel 22. Specifically, a groove can be provided on the inner wall of the concave chamber 21, connecting the first portion 211 and the second portion 212 of the concave chamber 21, forming the first flow channel 22 for gas circulation.

[0045] In some embodiments, please refer to Figure 1-Figure 5 A second flow channel 25 is provided on the wall of the concave chamber 21. The second flow channel 25 is arranged to intersect with the first flow channel 22 and communicate with the first flow channel 22. The first flow channel 22 and the second flow channel 25 are used to connect the various parts of the concave chamber 21. Specifically, the second flow channel 25 can be an annular flow channel that can connect the first part 211 and the second part 212 of the concave chamber 21 along the circumferential direction. The first flow channel 22 and the second flow channel 25 are arranged to intersect each other to connect the various parts of the concave chamber 21.

[0046] During the process of the vacuum device 3 extracting air through the air hole 23, the gas can flow along the first flow channel 22 and the second flow channel 25. Even if the part of the suction cup 2 close to the air hole 23 is in contact with the wall, it cannot hinder the gas flow. The vacuum process is smoother, and the gas in the concave chamber 21 can be extracted to the maximum extent. The pressure difference between the inside and outside of the suction cup 2 is greater, and the suction cup 2 has a greater adsorption force.

[0047] In some embodiments, please refer to Figure 1-Figure 5 The first flow channel 22 extends radially along the suction cup 2, while the second flow channel 25 is an annular flow channel arranged circumferentially on the suction cup 2. Specifically, in this embodiment, two second flow channels 25 are provided: one is provided in the second portion 212 of the concave chamber 21, and the other is provided in the first portion 211 of the concave chamber 21. The air holes 23 are directly connected to the second flow channels 25, and multiple first flow channels 22 are connected between the two second flow channels 25. During the air extraction process, the gas in the concave chamber 21 flows along the second flow channels 25 and the first flow channels 22 into the air holes 23 and is extracted.

[0048] In other embodiments, multiple second flow channels 25 may be provided. For example, two, three, five, etc. second flow channels 25 may be provided in the second portion 212 of the concave chamber 21. Furthermore, the second flow channel 25 may be provided in multiple discontinuous sections, as long as each section extends along the circumference of the concave chamber 21 and communicates with the first flow channel 22.

[0049] In some embodiments, please refer to Figure 8 and Figure 9 The suction cup 2 is provided with multiple groups of protrusions 24. Each group of protrusions 24 is arranged in a circular array on the suction cup 2, with adjacent groups of protrusions 24 spaced apart in the radial direction of the suction cup 2. Within each group of protrusions 24, a first flow channel 22 is formed between two adjacent protrusions 24, and an annular second flow channel 25 is formed between two adjacent groups of protrusions 24. Through the arrangement of these multiple groups of protrusions 24, the various parts of the concave chamber 21 of the suction cup 2 are fully connected, making the air extraction process smoother, and the gas within the concave chamber 21 can be extracted to the maximum extent possible. The pressure difference between the inside and outside of the suction cup 2 is greater, and the suction cup 2 has a stronger suction force.

[0050] In some embodiments, please refer to Figure 1 and Figure 5 The suction cup 2 is provided with a corrugated structure extending in the circumferential direction of the suction cup 2. Specifically, the corrugated structure forms a second flow channel 25, which extends in the circumferential direction of the suction cup 2, and the extended shape is a corrugated shape. The extended shape of the second flow channel 25 can also be a sawtooth shape, and form a closed annular flow channel on the suction cup 2. The above arrangement can reduce the deformation resistance of the suction cup 2 during the air extraction process, making the air extraction process smoother. In other embodiments, the extended shape of the second flow channel 25 can also be a square corrugated shape, etc.

[0051] In some embodiments, please refer to Figure 1 、 Figure 3 and Figure 4 The negative pressure suction device includes a seal 4. The edge of the suction cup 2 is provided with a groove, and the seal 4 is disposed within the groove and is used to seal against the wall. Specifically, the seal 4 can be a sealing ring, and the material of the seal 4 can be softer than the suction cup 2, such as silicone. The provision of the seal 4 can improve the adhesion between the suction cup 2 and the wall, thereby improving the airtightness of the concave chamber 21 and preventing the suction cup 2 from loosening.

[0052] In some embodiments, please refer to Figure 1 、 Figure 6 and Figure 7 The negative pressure adsorption device includes a bracket 5 for securing an object. The bracket 5 is rotatably connected to the housing 1 to adjust the placement angle of the object. Specifically, the bracket 5 may be an annular bracket 5. The housing 1 may be provided with a rotating shaft 53, on which the bracket 5 is rotatably mounted. The bracket 5 can be used to hold a mobile phone, and the placement angle of the mobile phone can be adjusted by rotating it.

[0053] In some embodiments, the annular bracket 5 may be further embedded with a magnetic member 51, which can be used to adsorb electronic devices, such as mobile phones. Alternatively, the magnetic member 51 is used to adsorb metal walls, while the suction cup 2 is used to adsorb electronic devices and other items. The annular bracket 5 may also be provided with a charging coil. When a mobile phone is fixed by the annular bracket 5, the charging coil can charge the electronic device placed on the bracket 5. A solar panel 52 may also be provided in the middle of the annular bracket 5 or on the shell 1. The electricity generated by the solar panel 52 can be stored and then used to power the exhaust device 3, or to charge electronic devices through the charging coil.

[0054] In some embodiments, please refer to Figure 1-Figure 5 The air extraction device 3 further includes an activation element 6, which can be disposed within the concave chamber 21 of the suction cup 2 to activate the air extraction device 3 upon detecting contact between the suction cup 2 and the wall. For example, the activation element 6 can be a travel switch, a photoelectric sensor switch, a distance detection switch, etc. In other embodiments, the activation element 6 can be disposed on the housing 1, and the user can manually operate the activation element 6 to activate or deactivate the air extraction device 3.

[0055] The following describes an embodiment of the suction cup of the present invention.

[0056] The suction cup in this embodiment has the same structure as the suction cup 2 in the negative pressure adsorption device in any of the above embodiments, and will not be described in detail here.

[0057] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A negative pressure adsorption device, characterized in that: include: case; A suction cup, the suction cup being fixedly connected to the shell, the suction cup being provided with a concave chamber, the concave chamber being open toward a side away from the shell, the suction cup being adapted to adhere to a wall surface to be adsorbed to form a closed space within the concave chamber, the concave chamber comprising a first portion and a second portion, the second portion being located radially outward of the first portion, a first flow channel being provided on a cavity wall of the concave chamber, the first flow channel being adapted to connect the first portion with the second portion; An exhaust device is arranged inside the shell, and the suction cup is provided with an air hole located in the first part, the air hole is connected to the exhaust device, and the exhaust device is used to extract the gas in the concave chamber through the air hole.

2. The negative pressure adsorption device according to claim 1, characterized in that: The first flow channel extends in a radial direction of the suction cup.

3. The negative pressure adsorption device according to claim 2, characterized in that: A plurality of the first flow channels are provided, and the plurality of the first flow channels are circumferentially spaced apart on the suction cup.

4. The negative pressure adsorption device according to claim 1, characterized in that: A plurality of protrusions are provided on the cavity wall of the concave cavity. The protrusions extend from the first portion to the second portion, and the first flow channel is formed between two adjacent protrusions.

5. The negative pressure adsorption device according to claim 1, characterized in that: A groove is provided on the cavity wall of the concave cavity, and the groove extends from the first part to the second part, and the groove forms the first flow channel.

6. The negative pressure adsorption device according to claim 1, characterized in that: A second flow channel is provided on the cavity wall of the concave cavity. The second flow channel is arranged to cross the first flow channel and is communicated with the first flow channel. The first flow channel and the second flow channel are used to connect various parts of the concave cavity.

7. The negative pressure adsorption device according to claim 6, characterized in that: The first flow channel extends in a radial direction of the suction cup, and the second flow channel is an annular flow channel. The annular flow channel is circumferentially arranged on the suction cup.

8. The negative pressure adsorption device according to claim 7, characterized in that: The suction cup is provided with multiple groups of protrusions, each group of protrusions is arranged in a circular array on the suction cup, two adjacent groups of protrusions are spaced apart in the radial direction of the suction cup, the second flow channel is formed between the two adjacent groups of protrusions, and the first flow channel is formed between two adjacent protrusions in each group of protrusions.

9. The negative pressure adsorption device according to claim 1, characterized in that: The suction cup is provided with a wave-shaped structure extending along the circumference of the suction cup.

10. The negative pressure adsorption device according to any one of claims 1 to 8, characterized in that: A sealing member is included, and a slot is provided on the edge of the suction cup. The sealing member is arranged in the slot and is used for sealing and fitting with the wall surface.

11. The negative pressure adsorption device according to any one of claims 1 to 8, characterized in that: The utility model comprises a bracket, wherein the bracket is used for fixing an article, and the bracket is rotatably connected to the shell to adjust the placement angle of the article.

12. A suction cup, characterized in that: The suction cup is the suction cup in the negative pressure adsorption device according to any one of claims 1 to 11.

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