Negative pressure suction fixing device

Abstract

The present application provides a negative pressure suction fixing device, comprising a housing, a suction member, a negative pressure forming assembly, and a sealing member. An accommodating cavity is formed inside the housing; the suction member has an abutting surface; a suction cavity is recessed on the abutting surface; the suction cavity is communicated with the accommodating cavity; a mounting structure is provided on the abutting surface; the sealing member is connected to the mounting structure, so as to be arranged on the abutting surface; the sealing member is configured to abut against a suction surface; the sealing member can elastically deform to fit the surface of the suction surface; the suction cavity, the sealing member and the suction surface cooperate with each other to form a closed space; and the negative pressure forming assembly is configured to generate negative pressure in the accommodating cavity, so that negative pressure is formed in the closed space. The negative pressure suction fixing device is suctioned on a rough surface and is not prone to falling off.

Description

Negative pressure adsorption fixing device TECHNICAL FIELD

[0001] The present application relates to the technical field of holding member devices, in particular to a negative pressure adsorption fixing device. BACKGROUND

[0002] The negative pressure adsorption fixing device is a device that holds a holding member against an adsorption surface and generates negative pressure in the holding member to firmly adsorb the holding member to the adsorption surface. Since the holding member generates adsorption force by generating negative pressure inside, the sealing performance of the space formed by the holding member and the adsorption surface is required to be high. If air enters the sealed space, the holding member will fall off the adsorption surface.

[0003] However, the existing negative pressure adsorption fixing device can only be adsorbed on a smooth adsorption surface. When the negative pressure adsorption fixing device is adsorbed on a rough surface, the rough surface is uneven, and the holding member and the adsorption surface are difficult to cooperate to form a sealed space, which causes the negative pressure adsorption fixing device to be easily adsorbed on the rough surface. CONTENT OF THE INVENTION

[0004] The present application mainly provides a negative pressure adsorption fixing device, which solves the problem that the negative pressure adsorption fixing device is easily adsorbed on a rough surface.

[0005] In order to solve the above technical problem, the present application provides a negative pressure adsorption fixing device, which comprises a shell, a holding member, a negative pressure forming assembly and a sealing member. The inside of the shell has a receiving cavity. The holding member has an abutting surface; the abutting surface is concave with an adsorption cavity, and the adsorption cavity is communicated with the receiving cavity; the abutting surface has a mounting structure; the sealing member is connected with the mounting structure to be arranged on the abutting surface, and the sealing member is used to abut on the adsorption surface, and the sealing member can be elastically deformed to fit the surface of the adsorption surface, so that the adsorption cavity, the sealing member and the adsorption surface cooperate to form a sealed space. The negative pressure forming assembly is used to generate negative pressure in the receiving cavity to form negative pressure in the sealed space.

[0006] In one embodiment, the sealing member is a colloid.

[0007] In one embodiment, the mounting structure comprises a containing groove, and the sealing member is installed in the containing groove.

[0008] In one embodiment, the containing groove is annular, the containing groove is arranged around the outer periphery of the adsorption cavity, and the sealing member is annular.

[0009] In one embodiment, the negative pressure adsorption fixing device further comprises a release film, and the release film is arranged on the side of the sealing member away from the shell to protect the sealing member.

[0010] In an embodiment, the negative pressure adsorption fixing device further comprises a solar panel and a battery, the solar panel is installed on the shell, the solar panel has a light absorption surface, at least a part of the light absorption surface is exposed to the shell, the solar panel is used for converting solar energy into electric energy; the battery is used for supplying power to the negative pressure forming assembly, and the battery can store the electric energy converted by the solar panel.

[0011] In an embodiment, the negative pressure adsorption fixing device further comprises a charging interface, the charging interface is used for connecting with an external power supply to supply power to the battery.

[0012] In an embodiment, the negative pressure adsorption fixing device further comprises a first charging circuit, a second charging circuit and a comparator, the first charging circuit comprises a first switch module, the first charging circuit is used for connecting with the solar panel, the second charging circuit comprises a second switch module, the second switch module is used for connecting with the external power supply; one end of the first switch module is connected with the solar panel, and the other end of the first switch module is used for connecting with the battery; one end of the second switch module is connected with the external power supply, and the other end of the second switch module is used for connecting with the battery; a first input end of the comparator is connected with the first charging circuit, a second input end of the comparator is connected with the second charging circuit, and an output end of the comparator is used for outputting a comparison result, the first switch module is closed or opened in response to the comparison result of the comparator, and the second switch module is closed or opened in response to the comparison result of the comparator.

[0013] In an embodiment, the first charging circuit further comprises a first protection module, and the second charging circuit further comprises a second protection module; one end of the first protection module is connected with the first switch module, and the other end of the first protection module is connected with the battery; one end of the second protection module is connected with the second switch module, and the other end of the second protection module is connected with the battery; the first protection module and the second protection module are used for preventing reverse flow.

[0014] In an embodiment, the negative pressure adsorption fixing device further comprises a magnetic member, the magnetic member is installed on the shell, and the magnetic member is used for magnetically adsorbing the part to be fixed.

[0015] In an embodiment, the magnetic member can rotate relative to the shell to rotate the magnetic member to approach and move away from the shell, so as to adjust the included angle between the magnetic member and the shell.

[0016] In an embodiment, the shell has opposite first and second ends along the axial direction of the shell, the holding member is installed on the first end of the shell, and the magnetic member is installed on the second end of the shell.

[0017] In an embodiment, the negative pressure adsorption fixing device further comprises a rotating member, the rotating member is rotationally connected with the shell through a rotating shaft; and the magnetic member is fixedly installed on the rotating member.

[0018] In an embodiment, the rotating member is provided with a recess on a side away from the housing, and at least part of the magnetic member is installed in the recess.

[0019] In an embodiment, the negative pressure forming assembly comprises a driving member, a cylinder plug and a cylinder barrel, the cylinder barrel has an accommodating cavity in the interior, the accommodating cavity is communicated with the receiving cavity, and the cylinder plug is arranged in the accommodating cavity; the driving member is used to drive the cylinder plug to make the cylinder plug move to generate negative pressure in the receiving cavity.

[0020] In an embodiment, the negative pressure adsorption fixing device further comprises an opening assembly, the opening assembly comprises a first movable part and a switch member, one end of the first movable part is arranged outside the receiving cavity, and the other end of the first movable part is arranged in the receiving cavity; the first movable part can move towards the interior of the receiving cavity to touch the switch member to start the negative pressure forming assembly.

[0021] In an embodiment, the movement direction of the first movable part is perpendicular to the abutting surface; when the adsorption member is adsorbed on the adsorption surface, the first movable part can abut against the adsorption surface to move towards the interior of the receiving cavity under the pressure of the adsorption surface.

[0022] In an embodiment, the switch member is a two-way change-over switch, and the first movable part can also move towards the exterior of the receiving cavity to touch the two-way change-over switch to start the negative pressure forming assembly.

[0023] In an embodiment, the negative pressure adsorption fixing device further comprises an air inlet assembly, the air inlet assembly is used to communicate the receiving cavity with the exterior of the housing to enable the adsorption member to separate from the adsorption surface.

[0024] In an embodiment, the air inlet assembly comprises a second movable part, one end of the second movable part is arranged outside the housing, and the other end of the second movable part is arranged inside the housing; the second movable part can open an air path between the receiving cavity and the exterior of the housing when subjected to a pressing force.

[0025] The application provides a negative pressure adsorption fixing device, which comprises a shell, an adsorption piece, a negative pressure forming assembly and a sealing piece. The shell has a receiving cavity in the interior. The adsorption piece has an abutting surface, and the abutting surface is concavely provided with an adsorption cavity, which is communicated with the receiving cavity. The abutting surface is provided with a mounting structure. The sealing piece is connected with the mounting structure and arranged on the abutting surface. The sealing piece is used for abutting on the abutting surface and can be elastically deformed to match the surface of the abutting surface, so that the adsorption cavity, the sealing piece and the abutting surface cooperatively form a sealed space. The negative pressure forming assembly is used for generating negative pressure in the receiving cavity, so that the sealed space forms negative pressure. The negative pressure adsorption fixing device is provided with the sealing piece on the abutting surface of the adsorption piece, and the sealing piece has strong deformability. Therefore, when the negative pressure adsorption fixing device abuts on a rough adsorption surface, the sealing piece can be deformed to match the uneven profile of the adsorption surface, so as to match the surface of the adsorption surface. The adsorption piece can strengthen the sealing property of the space formed between the adsorption piece and the adsorption surface through the sealing piece, so that the negative pressure adsorption fixing device is not easy to fall off on the rough surface. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a structural schematic diagram of the negative pressure adsorption fixing device from one perspective according to an embodiment of the application;

[0027] Fig. 2 is a structural schematic diagram of the negative pressure adsorption fixing device from another perspective according to an embodiment of the application;

[0028] Fig. 3 is an exploded structural schematic diagram of Fig. 1;

[0029] Fig. 4 is a sectional view of the adsorption piece and the sealing piece according to an embodiment of the application;

[0030] Fig. 5 is a structural schematic diagram of the negative pressure adsorption fixing device according to another embodiment of the application;

[0031] Fig. 6 is a structural schematic diagram of the negative pressure adsorption fixing device without the adsorption piece according to an embodiment of the application;

[0032] Fig. 7 is a block diagram of a charging circuit of the negative pressure adsorption fixing device according to an embodiment of the application;

[0033] Fig. 8 is a block diagram of a connection structure of a comparator according to an embodiment of the application;

[0034] Fig. 9 is a structural schematic diagram of the rotation of a magnetic piece according to an embodiment of the application;

[0035] Fig. 10 is an exploded structural schematic diagram of Fig. 9;

[0036] Fig. 11 is a structural schematic diagram of a lower shell, a negative pressure forming assembly, an opening assembly and an air inlet assembly according to an embodiment of the application;

[0037] Fig. 12 is a structural schematic view of a negative pressure forming assembly, an opening assembly and an air inlet assembly according to an embodiment of the present application;

[0038] Fig. 13 is a structural schematic view of a negative pressure forming assembly (exploded view), an opening assembly and an air inlet assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0039] The application will be further described in details with reference to the accompanying drawings. In different embodiments, similar elements are denoted by similar reference numbers. In the following embodiments, many details are described in order to provide a better understanding of the present application. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can 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 in order to avoid the core of the present application being overwhelmed by too many descriptions, and it is not necessary to describe these related operations in details for those skilled in the art based on the description in the specification and general technical knowledge in the art.

[0040] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be adjusted or changed in sequence as long as it is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clear description of one embodiment, and do not mean that the sequence is necessary, unless otherwise stated that the sequence must be followed.

[0041] In this document, the serial numbers of components, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified.

[0042] The application provides a negative pressure adsorption fixing device which can be used for adsorption on an adsorption surface. Moreover, a connecting part is arranged on the negative pressure adsorption fixing device, so that a to-be-fixed part can be fixed on the negative pressure adsorption fixing device through the connecting part, thereby achieving the fixing of the to-be-fixed part on the adsorption surface. The connecting mode of the connecting part and the to-be-fixed part can be, but is not limited to, buckle connection, magnetic attraction connection, interference fit connection, etc. In an application scenario, the negative pressure adsorption fixing device can be used in a vehicle-mounted environment, and the negative pressure adsorption fixing device can be fixed on a vehicle body, and an electronic device can be fixed on the negative pressure adsorption fixing device through the connecting part, so that a user can watch the content displayed by the electronic device. Of course, the negative pressure adsorption fixing device is not limited to be applied in the vehicle-mounted environment, and can be applied in any application scenario in which a to-be-fixed part needs to be fixed.

[0043] Please refer to FIGS. 1-5, the negative pressure adsorption fixing device includes a shell 10, a holding part 20, a negative pressure forming assembly 30 and a sealing part 40. The inside of the shell 10 has a receiving cavity 11. Specifically, the shell 10 can include an upper shell and a lower shell, and the upper shell and the lower shell are detachably connected and cooperate to form the receiving cavity 11.

[0044] The holding part 20 is used for adsorption on an adsorption surface. The holding part 20 is installed on the shell 10. The holding part 20 can be installed on the end surface of the shell 10 in the axial direction, or can be installed on the annular side wall of the shell 10. As shown in FIG. 2, the end of the holding part 20 away from the shell 10 has an abutting surface 21. The abutting surface 21 is concave and has an adsorption cavity 22, and the adsorption cavity 22 is in communication with the receiving cavity 11, that is, the gas pressure in the adsorption cavity 22 is the same as that in the receiving cavity 11. The holding part 20 can be, for example, a suction cup or a suction ring. In order to prevent the holding part 20 and the adsorption surface from forming a sealed space that leaks, the material of the holding part 20 can be a flexible material, which has a deformable feature and can better fit the adsorption surface.

[0045] The abutting surface is provided with a mounting structure. The mounting structure is used for fixing and mounting the sealing part 40. The sealing part 40 is connected with the mounting structure and arranged on the abutting surface 21. The sealing part 40 is used for abutting on the adsorption surface, and can be elastically deformed to fit the surface of the adsorption surface, so that the adsorption cavity 22, the sealing part 40 and the adsorption surface cooperate to form a sealed space. For example, in an embodiment, the sealing part 40 can be a gel, such as a semi-solid or soft gel. Compared with a relatively hard gel such as rubber, the semi-solid or soft gel has stronger elastic deformation capability and can better deform into the shape of the uneven surface of the adsorption surface.

[0046] The negative pressure forming assembly 30 is used to generate negative pressure in the accommodation cavity 11. Since the accommodation cavity 11 is in communication with the sealed space, the negative pressure forming assembly 30 can cause the sealed space to form negative pressure, so that the suction holder 20 generates negative pressure suction effect. The negative pressure forming assembly 30 can stably generate negative pressure in the sealed space by energization. Compared with natural suction (such as by extruding air in the sealed space to make the suction holder 20 adhere to the adsorption surface), the negative pressure forming assembly 30 generates negative pressure in a more stable and reliable manner.

[0047] The negative pressure adsorption fixing device is provided with the sealing member 40 on the abutting surface 21 of the suction holder 20. The sealing member 40 has strong deformability. Therefore, when the negative pressure adsorption fixing device abuts against the rough adsorption surface, the sealing member 40 can deform to match the uneven profile of the adsorption surface, so as to fit the surface of the adsorption surface. The suction holder 20 can strengthen the airtightness of the space formed between the suction holder 20 and the adsorption surface through the sealing member 40, so that the negative pressure adsorption fixing device is not easy to fall off from the rough surface.

[0048] Please refer to FIG. 2 and FIG. 4. In an embodiment, the mounting structure includes a receiving groove 211, and the sealing member 40 is mounted in the receiving groove 211. The connection between the sealing member 40 and the suction holder 20 is more reliable, and the sealing member 40 is prevented from falling off from the suction holder 20. The thickness of the sealing member 40 can be slightly higher than the groove depth of the receiving groove 211. When the negative pressure adsorption fixing device abuts against the adsorption surface, the adsorption surface abuts against the sealing member 40. Compared with the abutment between the suction holder 20 and the adsorption surface, the abutment between the sealing member 40 and the sealing member 40 can achieve better sealing effect of the sealed space.

[0049] In an embodiment, the receiving groove 211 is annular, and the receiving groove 211 is arranged around the outer periphery of the adsorption cavity 22. The sealing member 40 is annular. By setting the shape of the sealing member 40 as annular, the outer periphery of the adsorption cavity 22 can be sealed with the adsorption surface by the sealing member 40, and the airtightness of the sealed space is improved. The annular shape can be a circular ring, a square ring or other irregular shape ring, as long as the ring can enclose a closed shape.

[0050] Please refer to FIG. 5. In an embodiment, the negative pressure adsorption fixing device further includes a release film 50, which is arranged on the side of the sealing member 40 away from the housing 10, and is used to protect the sealing member 40. In the factory state, the release film 50 can protect the sealing member 40 during transportation and storage, and prevent the sealing member 40 from adhering dust on the surface. If too many solid particles adhere to the surface of the sealing member 40, the airtightness of the sealed space may be weakened, and the adsorption of the negative pressure adsorption fixing device may be deteriorated.

[0051] Please refer to FIG. 3, the negative pressure adsorption fixing device further comprises a solar panel 60 and a battery. The solar panel 60 is an element capable of converting solar energy into electric energy. The solar panel 60 is installed on the shell 10, and the solar panel 60 has a light absorption surface 61, at least a part of the light absorption surface 61 is exposed to the shell 10, preferably, in order to improve the energy conversion rate of the solar panel 60, the entire light absorption surface 61 is exposed to the shell 10, so that the solar panel 60 can fully convert solar energy. The battery is used to supply power to the negative pressure forming assembly 30, and the battery can store the electric energy converted by the solar panel 60. By installing the solar panel 60 on the shell 10, when driving during the day, the solar panel 60 can convert solar energy into electric energy and store it in the battery during the day, that is, the battery can be continuously supplied with power by the solar panel 60 during the day, so that the battery can continuously supply power to the negative pressure forming assembly 30, improve the problem of insufficient battery endurance of the negative pressure adsorption fixing device, and the user does not need to charge the power frequently, thereby improving the user experience. When not driving during the day, the solar panel 60 can also convert solar energy into electric energy to supplement the electric energy decayed when the battery is naturally placed, so that the battery of the negative pressure adsorption fixing device can also have sufficient electric energy for power supply at night.

[0052] As shown in FIG. 3 and FIG. 6, in an embodiment, the shell 10 has a first end surface 121 and a second end surface 131 which are relatively away along the axial direction of the shell 10. The holding member 20 is installed on the first end surface 121 of the shell 10, the cavity wall of the adsorption cavity 22 is provided with a first communication hole 221, and the first end surface 121 of the shell 10 is provided with a second communication hole 1211. The adsorption cavity 22 communicates with the accommodation cavity 11 through the first communication hole 221 and the second communication hole 1211. The solar panel 60 is installed on the second end surface 131 of the shell 10. Since the holding member 20 is installed on the first end surface 121 of the shell 10, the first end surface 121 of the shell 10 is generally directed towards the vehicle body, and the second end surface 131 of the shell 10 is directed towards the vehicle window. Installing the solar panel 60 on the second end surface 131 of the shell 10 is conducive to the solar panel 60 absorbing solar energy through the vehicle window.

[0053] As shown in FIG. 3, in an embodiment, the negative pressure adsorption fixing device further comprises a charging interface 70 for connecting with an external power source to supply power to the battery. Even if the solar panel 60 can charge the battery with the solar panel 60, the battery storage capacity may still be depleted when driving for a long time at night. Therefore, in this embodiment, the negative pressure adsorption fixing device can have two charging modes of solar panel 60 charging and external power charging at the same time, thereby improving the reliability of the negative pressure adsorption fixing device when driving at night and on cloudy and rainy days.

[0054] Further, referring to FIG. 7 and FIG. 8, the negative pressure adsorption fixing device further comprises a first charging circuit 81, a second charging circuit 82 and a comparator 83. The first charging circuit 81 comprises a first switch module 811, and the first charging circuit 81 is configured to be connected with the solar panel 60. The second charging circuit 82 comprises a second switch module 821, and the second switch module 821 is configured to be connected with an external power supply.

[0055] One end of the first switch module 811 is connected with the solar panel 60, and the other end of the first switch module 811 is configured to be connected with the battery. One end of the second switch module 821 is connected with the external power supply, and the other end of the second switch module 821 is configured to be connected with the battery. A first input end of the comparator 83 is connected with the first charging circuit 81, and a second input end of the comparator 83 is connected with the second charging circuit 82. An output end of the comparator 83 is configured to output a comparison result, wherein the comparison result can be a comparison result of a charging current of the first charging circuit 81 and a charging current of the second charging circuit 82. The first switch module 811 is closed or opened in response to the comparison result of the comparator 83, and the second switch module 821 is closed or opened in response to the comparison result of the comparator 83.

[0056] For example, when the solar panel 60 charges the battery and the user does not connect the external power supply, the charging current of the first charging circuit 81 is greater than the charging current of the second charging circuit 82, the comparator 83 outputs a first comparison result, the first switch module 811 is closed in response to the first comparison result of the comparator 83, and the second switch module 821 is opened in response to the second comparison result of the comparator 83. When the external power supply is connected, the charging current of the second charging circuit 82 is greater than the charging current of the first charging circuit 81, the comparator 83 outputs a second comparison result, the first switch module 811 is opened in response to the first comparison result of the comparator 83, and the second switch module 821 is closed in response to the second comparison result of the comparator 83, that is, when the user connects the external power supply, the second charging circuit 82 where the external power supply is located is connected, and the first charging circuit 81 where the solar panel 60 is located is disconnected, so as to avoid that the two charging modes work at the same time.

[0057] Further, the first charging circuit 81 further comprises a first protection module 812, and the second charging circuit 82 further comprises a second protection module 822. One end of the first protection module 812 is connected with the first switch module 811, and the other end of the first protection module 812 is connected with the battery. One end of the second protection module 822 is connected with the second switch module 821, and the other end of the second protection module 822 is connected with the battery. The first protection module 812 and the second protection module 822 are configured to prevent reverse current. The first protection module 812 and the second protection module 822 can be diodes, for example.

[0058] In an embodiment, as shown in FIGS. 1-3, the negative pressure adsorption fixing device further comprises a magnetic member 91, which is mounted on the shell 10, preferably mounted on the end of the shell 10 away from the first end face 121. In an embodiment, the magnetic member 91 can be mounted on the side of the solar panel 60 away from the shell 10, and the magnetic member 91 exposes at least part of the light-adsorbing surface 61. For example, the magnetic member 91 can be arranged in a ring shape or an arc shape.

[0059] The magnetic member 91 is used for magnetic adsorption with the to-be-fixed member. That is, in this embodiment, the connecting portion is configured as the magnetic member 91. In the application of fixing electronic devices, the vehicle body can be held by the holding member 20, and the electronic devices can be magnetically adsorbed by the magnetic member 91. Of course, the vehicle body can be magnetically adsorbed by the magnetic member 91, and the electronic devices can be held by the holding member 20. Generally, the shell of the electronic device is made of metal material, and the shell made of metal material can be magnetically adsorbed by the magnetic member 91, or the electronic device has a metal member or a magnetic adsorption member inside, which can be magnetically adsorbed by the magnetic member 91. This embodiment can reliably connect the electronic devices to the negative pressure adsorption fixing device by taking advantage of the characteristics that the electronic devices usually have.

[0060] Further, the negative pressure adsorption fixing device can further comprise a wireless charging coil, which can wirelessly charge the electronic devices when the magnetic member 9150 magnetically adsorbs the electronic devices.

[0061] In an embodiment, as shown in FIGS. 9 and 10, the magnetic member 91 can rotate relative to the shell 10 to rotate the magnetic member 91 relative to the shell 10 to approach and move away from the shell 10, so as to adjust the included angle between the magnetic member 91 and the shell 10. Since the shell 10 is fixed to the adsorbing surface by the holding member 20, the shell 10 is relatively fixed to the adsorbing surface, and thus the rotation of the magnetic member 91 relative to the shell 10 is the rotation of the magnetic member 91 relative to the adsorbing surface, and the rotation of the magnetic member 91 can adjust the angle between the magnetic member 91 and the adsorbing surface. In a vehicle-mounted environment, when the shell 10 is fixed to the vehicle body by the holding member 20, the user can adjust the angle of the electronic devices fixed to the magnetic member 91 relative to the driving position by driving the magnetic member 91 to rotate relative to the shell 10, so that the user can select the angle of the display screen of the electronic devices facing the user, which can adjust the angle of the electronic devices without the user disassembling the negative pressure adsorption fixing device, and brings convenience to the user. Moreover, the rotation angle of the magnetic member 91 relative to the shell 10 is large, and the angle of the electronic devices relative to the user is not too limited by the structure of the vehicle body itself, which can meet the needs of the user to adjust the angle of the to-be-fixed member relative to the driving position in a large range.

[0062] Therefore, the negative pressure adsorption fixing device of the present application can realize the detachable connection between the negative pressure adsorption fixing device and the fixed part by installing the magnetic part 91 on the shell 10, and the magnetic part 91 can be magnetically connected with the fixed part. In addition, the magnetic part 91 can be magnetically connected with the fixed part no matter which side of the magnetic part 91 is closer to the shell or farther away from the shell. The fixed part can also rotate at any angle along the contact surface of the magnetic adsorption, so that the relative position of the negative pressure adsorption fixing device and the fixed part can be changed more. In addition, the magnetic part 91 can be rotated relative to the shell 10 to adjust the included angle between the magnetic part 91 and the shell 10, so that the angle of the fixed part connected with the magnetic part 91 relative to the adsorption surface can be adjusted without disassembling the negative pressure adsorption fixing device, thereby meeting the needs of users to conveniently and widely adjust the angle of the fixed part relative to the adsorption surface.

[0063] Please refer to FIG. 9 and FIG. 10. In an embodiment, the shell 10 has opposite first end 12 and second end 13 along the axial direction of the shell 10. The holding part 20 is installed on the first end 12 of the shell 10, and the magnetic part 91 is installed on the second end 13 of the shell 10. The first end 12 includes a first end surface 121 and a partial annular side wall of the shell 10 close to the first end surface 121, and the second end 13 includes a second end surface 131 and a partial annular side wall of the shell 10 close to the second end surface 131. By installing the holding part 20 and the magnetic part 91 on the two ends of the shell 10 respectively, generally, the holding part 20 will be held on the adsorption surface, and the position of the magnetic part 91 is farther away from the adsorption surface, so that the magnetic part 91 is not easily interfered by the adsorption surface when rotating, and the angle of the magnetic part 91 can be designed to be larger.

[0064] The magnetic part 91 rotates relative to the shell 10 along the rotation axis 93, and the axial direction of the rotation axis 93 is perpendicular to the axial direction of the shell 10. In an embodiment, the shell 10 is substantially cylindrical, and the axial direction of the rotation axis 93 is perpendicular to the axial direction of the cylinder. The rotation angle a of the relative rotation between the magnetic part 91 and the shell 10 can be 0 < a ≤ 270 degrees. In an embodiment, the second end surface 131 of the shell 10 is a flat surface, the magnetic part 91 is stacked on the second end surface 131 in the initial state, and the angle between the side of the magnetic part 91 close to the second end surface 131 and the second end surface 131 is 0. When the magnetic part 91 rotates from the initial state, the magnetic part 91 rotates in the direction away from the second end surface 131.

[0065] As shown in FIG. 9 and FIG. 10, in an embodiment, the negative pressure adsorption fixing device further comprises a rotating member 92, which is rotatably connected to the shell 10 through a rotating shaft 93. The magnetic member 91 is fixedly installed on the rotating member 92. Since the magnetic member 91 is difficult to change its structure to install the rotating shaft 93, the embodiment adopts the way of fixing the magnetic member 91 on the rotating member 92, so that the magnetic member 91 can be rotatably connected to the shell 10. The way of installing the magnetic member 91 on the rotating member 92 can be non-detachable connection or detachable connection. In an embodiment, the side of the rotating member 92 away from the shell 10 is provided with a groove, and at least part of the magnetic member 91 is installed in the groove. A cover can be provided on the groove, which can be used as a protective cover to protect the magnetic member 91 inside the rotating member 92. In other embodiments, the magnetic member 91 can also be embedded in the rotating member 92, or the magnetic member 91 can also be provided on the surface of the rotating member 92 by means of adhesive or the like.

[0066] As shown in FIG. 11-13, in an embodiment, the negative pressure forming assembly 30 comprises a driving member 31, a cylinder plug 32 and a cylinder barrel 33. The cylinder barrel 33 has an accommodating cavity in the inside, which is in communication with the receiving cavity 11, and the cylinder plug 32 is arranged in the accommodating cavity. The driving member 31 is used to drive the cylinder plug 32 to make the cylinder plug 32 move to generate negative pressure in the receiving cavity 11. Since the negative pressure forming assembly 30 is driven by the driving member 31, the user can control whether the negative pressure forming assembly 30 works by controlling the start and stop of the driving member 31.

[0067] The driving member 31 can be a motor. The output shaft of the motor can drive the cylinder plug 32 to move through a transmission mechanism, for example, a crank mechanism.

[0068] As shown in FIG. 11-13, in an embodiment, the negative pressure adsorption fixing device further comprises an opening assembly 111. The opening assembly 111 comprises a first movable part 1111 and a switch member 1112. One end of the first movable part 1111 is arranged outside the receiving cavity 11, and the other end of the first movable part 1111 is arranged inside the receiving cavity 11. The first movable part 1111 can move towards the inside of the receiving cavity 11 to touch the switch member 1112 to start the negative pressure forming assembly 30. In this way, the user can operate the first movable part 1111 from the outside of the shell 10 to start the negative pressure forming assembly 30, which is convenient for the user to operate the first movable part 1111, and the user can also decide when to perform negative pressure adsorption.

[0069] In one embodiment, the first movable part 1111 is perpendicular to the holding surface 21. When the holding member 20 is adsorbed on the adsorbing surface, the first movable part 1111 can abut against the adsorbing surface to move to the inside of the accommodating cavity 11 under the pressure of the adsorbing surface, thereby starting the negative pressure forming assembly 30. Thus, when the user presses the holding member 20 on the adsorbing surface, the first movable part 1111 can be automatically started, and the negative pressure forming assembly 30 can be simultaneously started with the pressing action of the user. The user does not need to manipulate the first movable part 1111, thereby simplifying the starting process of the negative pressure forming assembly 30. Preferably, the part of the first movable part 1111 outside the shell 10 is arranged inside the adsorbing cavity 22 of the holding member 20. Of course, in other embodiments, the part of the first movable part 1111 outside the shell 10 can be arranged outside the adsorbing cavity 22.

[0070] In one embodiment, the switch part 1112 is a bidirectional switch, and the first movable part 1111 can also move to the outside of the accommodating cavity 11 to actuate the bidirectional switch to start the negative pressure forming assembly 30. Since the holding member 20 can be loosened during the holding process, the user needs to press the negative pressure adsorption fixing device again when the holding member 20 is loosened, which is troublesome. By arranging the bidirectional switch, the first movable part 1111 can start the negative pressure forming assembly 30 when it is pressed or released, thereby preventing the holding member 20 from loosening and enabling the holding member 20 to be more stably adsorbed on the adsorbing surface.

[0071] As shown in FIGS. 11-13, in one embodiment, the negative pressure adsorption fixing device further comprises an air inlet assembly 112 for enabling the accommodating cavity 11 to communicate with the outside of the shell 10, thereby enabling the holding member 20 to be separated from the adsorbing surface. By arranging the air inlet assembly 112, the user can actively and smoothly separate the holding member 20 from the adsorbing surface. For example, the air inlet assembly 112 comprises a second movable part 1121 and a blocking part, one end of the second movable part 1121 is arranged outside the shell 10, and the other end of the second movable part 1121 is arranged inside the shell 10; the second movable part 1121 can move the blocking part to communicate the air path between the accommodating cavity 11 and the outside of the shell 10 when it is pressed.

[0072] In other embodiments, the negative pressure adsorption fixing device can also be pressed to disconnect the circuit of the negative pressure forming assembly 30, thereby stopping the negative pressure forming assembly 30 from working, and enabling the user to take the holding member 20 off the adsorbing surface.

[0073] The above application of specific examples is used to illustrate the present application and is not intended to limit the present application. According to the idea of the present application, those skilled in the art can make several simple deductions, modifications or substitutions.

Claims

1. A negative pressure suction fixing device characterized by comprising: The application relates to a negative pressure forming device, which comprises the following parts: a shell, the inside of the shell having a receiving cavity; a suction piece, the suction piece having a contact surface; a suction cavity is concavely arranged on the contact surface, the suction cavity being communicated with the receiving cavity; the contact surface has a mounting structure; a sealing piece, the sealing piece being connected with the mounting structure and arranged on the contact surface, the sealing piece being used for being in contact with the suction cavity, the sealing piece being capable of being elastically deformed to be matched with the surface of the suction cavity, so that the suction cavity, the sealing piece and the contact surface form a closed space; and a negative pressure forming assembly, the negative pressure forming assembly being used for generating negative pressure in the receiving cavity, so that the closed space forms negative pressure.

2. The negative pressure suction fixing device according to claim 1, wherein The sealing piece is a colloid.

3. The negative pressure suction fixing device according to claim 1, wherein The mounting structure comprises a containing groove, and the sealing piece is arranged in the containing groove.

4. The negative pressure suction fixing device according to claim 3, wherein The containing groove is annular, the containing groove is arranged around the outer periphery of the suction cavity, and the sealing piece is annular.

5. The negative pressure suction fixing device according to claim 1, wherein A release film is further arranged on the side of the sealing piece away from the shell, and is used for protecting the sealing piece.

6. The negative pressure suction fixing device according to claim 1, wherein A solar panel and a battery are further arranged, the solar panel is arranged on the shell, the solar panel has a light absorption surface, at least part of the light absorption surface is exposed to the shell, the solar panel is used for converting solar energy into electric energy, and the battery is used for supplying power to the negative pressure forming assembly and is capable of storing the electric energy converted by the solar panel.

7. The negative pressure suction fixing device according to claim 6, wherein A charging interface is further arranged, the charging interface is used for being connected with an external power supply to supply power to the battery.

8. The negative pressure suction fixing device according to claim 7, wherein A first charging circuit, a second charging circuit and a comparator are further arranged, the first charging circuit comprises a first switch module, the first charging circuit is used for being connected with the solar panel, the second charging circuit comprises a second switch module, and the second switch module is used for being connected with the external power supply; one end of the first switch module is connected with the solar panel, the other end of the first switch module is used for being connected with the battery, one end of the second switch module is connected with the external power supply, the other end of the second switch module is used for being connected with the battery, a first input end of the comparator is connected with the first charging circuit, a second input end of the comparator is connected with the second charging circuit, and an output end of the comparator is used for outputting a comparison result, the first switch module is closed or opened in response to the comparison result of the comparator, and the second switch module is closed or opened in response to the comparison result of the comparator.

9. The negative pressure suction fixing device according to claim 8, wherein The first charging circuit further comprises a first protection module, the second charging circuit further comprises a second protection module, one end of the first protection module is connected with the first switch module, the other end of the first protection module is connected with the battery, one end of the second protection module is connected with the second switch module, the other end of the second protection module is connected with the battery, and the first protection module and the second protection module are used for preventing reverse flow.

10. The negative pressure suction fixing device according to claim 1, wherein A magnetic piece is further arranged on the shell, and the magnetic piece is used for being magnetically adsorbed with a to-be-fixed piece.

11. The negative pressure suction fixing device according to claim 10, wherein The magnetic member is capable of rotating relative to the shell to rotate the magnetic member to approach and move away from the shell to adjust the included angle between the magnetic member and the shell.

12. The negative pressure suction fixture according to claim 11, wherein The shell has opposite first and second ends along the axial direction of the shell, the holding member is mounted to the first end of the shell, and the magnetic member is mounted to the second end of the shell.

13. The negative pressure suction fixing device according to claim 11, wherein The negative pressure adsorption fixing device further comprises a rotating member, the rotating member is rotationally connected to the shell through a rotating shaft, and the magnetic member is fixedly mounted to the rotating member.

14. The negative pressure suction fixture according to claim 13, wherein The side of the rotating member away from the shell is provided with a groove, and at least part of the magnetic member is mounted in the groove.

15. The negative pressure suction fixture according to claim 1, wherein The negative pressure forming assembly comprises a driving member, a cylinder plug and a cylinder barrel, the cylinder barrel has an accommodating cavity in the interior thereof, the accommodating cavity is communicated with the containing cavity, and the cylinder plug is arranged in the accommodating cavity; the driving member is used to drive the cylinder plug to move to generate negative pressure in the containing cavity.

16. The negative pressure suction fixture according to claim 1, wherein The opening assembly comprises a first movable part and a switch member, one end of the first movable part is arranged outside the containing cavity, and the other end of the first movable part is arranged in the containing cavity; the first movable part is capable of moving towards the interior of the containing cavity to actuate the switch member to start the negative pressure forming assembly.

17. The negative pressure suction fixture according to claim 16, characterized in that The movement direction of the first movable part is perpendicular to the abutting surface; when the holding member is adsorbed on the adsorption surface, the first movable part is capable of abutting against the adsorption surface to move towards the interior of the containing cavity under the pressure of the adsorption surface.

18. The negative pressure suction fixture according to claim 16, wherein The switch member is a two-way change-over switch, and the first movable part is also capable of moving towards the exterior of the containing cavity to actuate the two-way change-over switch to start the negative pressure forming assembly.

19. The negative pressure suction fixture according to claim 1, wherein The air inlet assembly is used to communicate the containing cavity with the exterior of the shell to enable the holding member to separate from the adsorption surface.

20. The negative pressure suction fixture according to claim 19, wherein The air inlet assembly comprises a second movable part, one end of the second movable part is arranged outside the shell, and the other end of the second movable part is arranged inside the shell; the second movable part is capable of opening the air path between the containing cavity and the exterior of the shell under the pressing force.

Images