Negative pressure adsorption fixing device

Abstract

The utility model provides a negative pressure adsorption fixing device. The negative pressure adsorption fixing device comprises a shell, an adsorption holding piece, a negative pressure forming assembly and a magnetic piece. An accommodating cavity is formed in the shell; the sucking and holding piece is mounted on the shell and is used for being adsorbed on the adsorption surface; an adsorption cavity is formed in the end, away from the shell, of the adsorption piece and communicates with the containing cavity; the adsorption cavity is matched with the adsorption surface to form a closed space; the negative pressure forming assembly is used for generating negative pressure in the containing cavity so that negative pressure can be formed in the closed space. The magnetic piece is mounted on the shell; the magnetic part is used for magnetically adsorbing a to-be-fixed part; the magnetic part can rotate relative to the shell so that the magnetic part can be rotationally close to and away from the shell, and the included angle between the magnetic part and the shell can be adjusted. According to the negative pressure adsorption fixing device, the included angle between the magnetic piece and the shell can be adjusted, and therefore the requirement that a user needs to conveniently adjust the angle of the to-be-fixed piece relative to the adsorption face in a large range is met.

Description

Technical Field

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

[0002] When driving a car, the driver often uses an electronic device to navigate the driving route. In the process of using an electronic device for navigation, the electronic device needs to be fixed. Usually, the electronic device can be fixed to the vehicle body by an adsorption device. Since the adsorption device is adsorbed on the vehicle body by negative pressure, it can be adsorbed on more positions of the vehicle body. After the adsorption device is adsorbed on the vehicle body, the adsorption device can be detachably connected to the electronic device to achieve the fixation of the electronic device on the adsorption device.

[0003] However, after the current adsorption device is connected to the electronic device, the angle of the electronic device relative to the driving seat is unique and cannot be adjusted. When the user wants to adjust the angle of the electronic device relative to the driving seat, the adsorption device can only be removed from the vehicle body and readjusted to the position where the adsorption device is adsorbed on the vehicle body, which is troublesome for the user. Moreover, even if the position where the adsorption device is adsorbed on the vehicle body is adjusted, the angle of the electronic device relative to the driving seat is still small due to the structure of the vehicle body, and it is difficult for the user to adjust the angle of the electronic device relative to the driving seat over a large range. Utility Model Content

[0004] The present application mainly provides a negative pressure adsorption fixing device, which can solve the problem that when the negative pressure adsorption fixing device fixes the part to be fixed, the angle of the part to be fixed relative to the adsorption surface is difficult to adjust.

[0005] In order to solve the above technical problems, the present application provides a negative pressure adsorption fixing device, which includes a shell, a suction holding member, a negative pressure forming assembly and a magnetic member. The shell has a receiving chamber inside; the suction holding member is installed on the shell, and the suction holding member is used to be adsorbed on the adsorption surface; the suction holding member is provided with an adsorption chamber at one end away from the shell, and the adsorption chamber is connected with the receiving chamber; the adsorption chamber is used to cooperate with the adsorption surface to form a closed space; the negative pressure forming assembly is used to generate negative pressure in the receiving chamber to form a negative pressure in the closed space; the magnetic member is installed on the shell; the magnetic member is used for magnetic adsorption with the member to be fixed; the magnetic member can rotate relative to the shell, so that the magnetic member rotates closer to and farther from the shell, so as to adjust the angle between the magnetic member and the shell.

[0006] In one embodiment, the shell has a first end and a second end opposite to each other along the axial direction of the shell, the suction member is installed at the first end of the shell, and the magnetic member is installed at the second end of the shell.

[0007] In one embodiment, the magnetic member and the housing rotate relative to each other along a rotation axis, and the axial direction of the rotation axis is perpendicular to the axial direction of the housing.

[0008] In one embodiment, the negative pressure adsorption fixing device further includes a rotating member, which is rotatably connected to the housing via a rotating shaft; and the magnetic member is fixedly mounted on the rotating member.

[0009] In one embodiment, a groove is provided on a side of the rotating member away from the housing, and at least a portion of the magnetic member is installed in the groove.

[0010] In one embodiment, the rotating member has a first connecting portion and a mounting portion, the housing is provided with a second connecting portion, the first connecting portion and the second connecting portion are rotatably connected via a rotating shaft; and the magnetic member is fixedly mounted on the mounting portion.

[0011] In one embodiment, the negative pressure adsorption fixing device also includes a solar panel and a battery. The solar panel is installed on the outer shell. The solar panel has a light absorbing surface. At least a portion of the light absorbing surface is exposed to the outer shell. The solar panel is used to convert solar energy into electrical energy; the battery is used to supply power to the negative pressure forming component, and the battery can store the electrical energy converted by the solar panel.

[0012] In one embodiment, the magnetic member is installed on a side of the solar panel away from the housing, and the magnetic member exposes at least a portion of the light absorbing surface.

[0013] In one embodiment, the magnetic member is annular or arc-shaped.

[0014] In one embodiment, the negative pressure forming component includes a driving member, a cylinder plug and a cylinder barrel, the interior of the cylinder barrel has a accommodating chamber, the accommodating chamber is communicated with the receiving chamber, and the cylinder plug is arranged in the accommodating chamber; the driving member is used to drive the cylinder plug to cause the cylinder plug to pull, so that negative pressure is generated in the receiving chamber.

[0015] In one embodiment, the negative pressure adsorption fixing device also includes an opening component, which includes a first movable part and a switch component, one end of the first movable part is arranged outside the receiving cavity, and the other end of the first movable part is arranged inside the receiving cavity; the first movable part can move toward the inside of the receiving cavity to trigger the switch component to start the negative pressure forming component.

[0016] In one embodiment, the adsorption cavity of the adsorption member has an adsorption port, which is used to abut against the adsorption surface; the movement direction of the first movable part is parallel to the axial direction of the adsorption port; when the adsorption member is adsorbed on the adsorption surface, the first movable part can abut against the adsorption surface and move toward the inside of the accommodating cavity under the pressure of the adsorption surface.

[0017] In one embodiment, the switch member is a two-way conversion switch, and the first movable portion can also move toward the outside of the accommodating cavity to trigger the two-way conversion switch to start the negative pressure forming component.

[0018] In one embodiment, the negative pressure adsorption fixing device further includes an air intake assembly, which is used to connect the receiving cavity with the outside of the shell so that the adsorption member can be separated from the adsorption surface.

[0019] In one embodiment, the air intake assembly includes a second movable part, one end of which is arranged outside the shell, and the other end of the second movable part is arranged inside the shell; the second movable part can open the air path between the accommodating cavity and the outside of the shell when subjected to pressing force.

[0020] The present application provides a negative pressure adsorption fixing device, including a shell, a suction holding member, a negative pressure forming assembly and a magnetic member. The shell has a receiving chamber inside; the suction holding member is installed on the shell, and the suction holding member is used to be adsorbed on the adsorption surface; the suction holding member is provided with an adsorption chamber at one end away from the shell, and the adsorption chamber is connected to the receiving chamber; the adsorption chamber is used to cooperate with the adsorption surface to form a closed space; the negative pressure forming assembly is used to generate negative pressure in the receiving chamber, so that negative pressure is formed in the closed space; the magnetic member is installed on the shell; the magnetic member is used to magnetically adsorb with the part to be fixed; the magnetic member can rotate relative to the shell, so that the magnetic member can rotate closer to and farther from the shell, so as to adjust the angle between the magnetic member and the shell. The negative pressure adsorption fixing device of the present application realizes a detachable connection between the negative pressure adsorption fixing device and the part to be fixed by installing the magnetic member on the shell, and the magnetic member can be magnetically adsorbed with the part to be fixed. Furthermore, by arranging the magnetic part to be rotatable relative to the outer shell to adjust the angle between the magnetic part and the outer shell, the angle of the part to be fixed connected to the magnetic part relative to the adsorption surface can be adjusted without removing the suction part, thereby satisfying the user's need to adjust the angle of the part to be fixed relative to the adsorption surface conveniently and over a large range. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a negative pressure adsorption fixing device provided in one embodiment of the present application from one perspective;

[0022] Figure 2 A schematic structural diagram of a negative pressure adsorption fixing device provided in one embodiment of the present application from another perspective;

[0023] Figure 3 A schematic diagram of the structure of the rotation of a magnetic member provided in one embodiment of the present application;

[0024] Figure 4 for Figure 3 Schematic diagram of the explosion structure;

[0025] Figure 5 for Figure 1 Schematic diagram of the explosion structure;

[0026] Figure 6 A schematic diagram of the structure of a negative pressure adsorption fixing device for removing a suction and holding member provided in one embodiment of the present application;

[0027] Figure 7A schematic diagram of the structure of a lower shell, a negative pressure forming component, an opening component, and an air intake component provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of the structure of a negative pressure forming component, an opening component, and an air intake component provided in an embodiment of the present application;

[0029] Fig. 9 A schematic structural diagram of a negative pressure forming component (explosion diagram), an opening component, and an air intake component provided in one embodiment of the present application. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, 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 part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0031] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0032] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0033] The present application provides a negative pressure adsorption fixing device. The negative pressure adsorption fixing device can be used to adsorb on an adsorption surface. In one application scenario, the negative pressure adsorption fixing device can be used in a vehicle environment. The negative pressure adsorption fixing device can be fixed to the vehicle body, and the electronic device can be fixed to the negative pressure adsorption fixing device through a magnetic suction part, so that the user can view the content displayed by the electronic device. Of course, the negative pressure adsorption fixing device is not limited to use in a vehicle environment, and can also be used in any application scenario where the part to be fixed needs to be fixed.

[0034] like Figure 1 , 2 5, the negative pressure adsorption fixing device includes a housing 10, a suction member 20, a negative pressure forming component 30 and a magnetic member 40. The housing 10 has a receiving chamber 11 inside. Specifically, the housing 10 may include an upper shell 12 and a lower shell 13, the upper shell 12 and the lower shell 13 are detachably connected, and the upper shell 12 and the lower shell 13 cooperate to form the receiving chamber 11.

[0035] The suction member 20 is mounted on the housing 10, and the suction member 20 is used to be adsorbed on the adsorption surface. The suction member 20 can be mounted on the end surface of the housing 10 along the axial direction, or on the annular side wall of the housing 10. Figure 2 As shown, the end of the suction member 20 away from the housing 10 is provided with an adsorption chamber 21, which is connected to the receiving chamber 11, that is, the internal gas pressure of the adsorption chamber 21 is the same as that of the receiving chamber 11. The adsorption chamber 21 is used to cooperate with the adsorption surface to form a closed space.

[0036] like Figure 2 and Figure 5 As shown, the negative pressure forming component 30 is used to generate negative pressure in the receiving chamber 11. Since the receiving chamber 11 is connected to the enclosed space, the negative pressure forming component 30 can form negative pressure in the enclosed space so that the suction member 20 produces a negative pressure suction effect. The negative pressure forming component 30 can stably generate negative pressure in the enclosed space by energizing. Compared with natural suction (such as squeezing out the air in the enclosed space to make the suction member 20 adsorb on the suction surface), the negative pressure forming component 30 generates negative pressure in a more stable and reliable way.

[0037] like Figure 1-4 As shown, the magnetic component 40 is installed on the housing 10. The magnetic component 40 is used for magnetic adsorption with the part to be fixed. Among them, in the application of fixing electronic equipment, the holding component 20 can be used to hold the vehicle body, and the magnetic component 40 can be used to magnetically attract the electronic equipment. Of course, the magnetic component 40 can also be used to magnetically attract the vehicle body, and the holding component 20 can be used to attract the electronic equipment. Usually, the shell of the electronic equipment is made of metal, and the metal shell can be magnetically adsorbed with the magnetic component 40, or the electronic equipment will have a metal part or a magnetic part inside, and the metal part or the magnetic part can be magnetically adsorbed with the magnetic part 40. This embodiment can reliably connect the electromagnetic device to the negative pressure adsorption fixing device by utilizing the characteristics that electronic equipment usually has.

[0038] Please refer to Figure 1-3, the magnetic part 40 can rotate relative to the housing 10, so that the magnetic part 40 rotates closer to and farther from the housing 10, so as to adjust the angle between the magnetic part 40 and the housing 10. Since the housing 10 is fixed on the adsorption surface by the suction member 20, the housing 10 and the adsorption surface are relatively fixed, therefore, the rotation of the magnetic part 40 relative to the housing 10 is the rotation of the magnetic part 40 relative to the adsorption surface, and the rotation of the magnetic part 40 can adjust the angle between the magnetic part 40 and the adsorption surface. In a vehicle environment, when the housing 10 is fixed to the vehicle body by the suction member 20, the user can drive the magnetic part 40 to rotate relative to the housing 10, thereby adjusting the angle of the electronic device fixed on the magnetic part 40 relative to the driving position, so that the user can select a suitable angle of the display screen of the electronic device facing the user. This adjustment method does not require the user to remove the negative pressure adsorption fixing device, and can adjust the angle of the electronic device, which brings convenience to the user. In addition, the rotation angle of the magnetic part 40 relative to the housing 10 is large, and the angle of the electronic device relative to the user will not be too limited by the structure of the vehicle body itself, which can meet the user's need to adjust the angle of the fixed part relative to the driving position in a wide range.

[0039] Therefore, the negative pressure adsorption fixing device of the present application can achieve a detachable connection between the negative pressure adsorption fixing device and the part to be fixed by installing the magnetic part 40 on the shell 10, and the magnetic part 40 can be magnetically adsorbed to the part to be fixed. In addition, the magnetic part 40 can be magnetically connected to the part to be fixed, whether it is the side close to the shell or the side away from the shell; the part to be fixed can also be rotated at any angle along the contact surface of magnetic adsorption, so that the relative position of the negative pressure adsorption fixing device and the part to be fixed can change more.

[0040] Furthermore, by arranging the magnetic part 40 to be rotatable relative to the outer shell 10 to adjust the angle between the magnetic part 40 and the outer shell 10, the angle of the part to be fixed connected to the magnetic part 40 relative to the adsorption surface can be adjusted without removing the negative pressure adsorption fixing device, thereby satisfying the user's need to conveniently and widely adjust the angle of the part to be fixed relative to the adsorption surface.

[0041] Please refer to Figure 5 and Figure 6 In one embodiment, the housing 10 has a first end 14 and a second end 15 opposite to each other along the axial direction of the housing 10. The suction member 20 is mounted on the first end 14 of the housing 10, and the magnetic member 40 is mounted on the second end 15 of the housing 10. The first end 14 includes a first end surface 141 and a portion of an annular side wall of the housing 10 close to the first end surface 141, and the second end 15 includes a second end surface 151 and a portion of an annular side wall of the housing 10 close to the second end surface 151. In one embodiment, as Figure 2 and Figure 6The suction member 20 is mounted on the first end surface 141 of the housing 10, a first connecting hole 211 is provided in the cavity wall of the suction chamber 21, and a second connecting hole 1411 is provided in the first end surface 141 of the housing 10. The suction chamber 21 is connected with the receiving chamber 11 through the first connecting hole 211 and the second connecting hole 1411. By mounting the suction member 20 and the magnetic member 40 at both ends of the housing 10, generally, the suction member 20 will be sucked on the suction surface, and the magnetic member 40 is located further away from the suction surface. The magnetic member 40 is not easily interfered by the suction surface when rotating, so that the rotation angle of the magnetic member 40 can be designed to be larger.

[0042] The magnetic component 40 and the housing 10 rotate relative to each other along the rotation axis, and the axial direction of the rotation axis is perpendicular to the axial direction of the housing 10. In one embodiment, the housing 10 is roughly cylindrical, and the axial direction of the rotation axis is perpendicular to the axial direction of the cylinder. The range of the rotation angle a of the relative rotation of the magnetic component 40 and the housing 10 can be 0<a≤270 degrees. In one embodiment, the second end face 151 of the housing 10 is set as a plane, and when the magnetic component 40 is in an initial state, the magnetic component 40 is stacked on the second end face 151, and the angle between the side of the magnetic component 40 close to the second end face 151 and the second end face 151 is 0; when the magnetic component 40 starts to rotate from the initial state, the magnetic component 40 rotates in a direction away from the second end face 151.

[0043] like Figure 1-4 As shown, in one embodiment, the negative pressure adsorption fixing device also includes a rotating member 50, and the rotating member 50 is rotatably connected to the housing 10 through a rotating shaft. The magnetic member 40 is fixedly mounted on the rotating member 50. Since it is difficult for the magnetic member 40 to change its structure to install the rotating shaft, this embodiment adopts a method of fixing the magnetic member 40 on the rotating member 50 so that the magnetic member 40 can be rotatably connected to the housing 10. Among them, the magnetic member 40 can be mounted on the rotating member 50 in a non-detachable connection or a detachable connection. In one embodiment, a groove 51 is provided on the side of the rotating member 50 away from the housing 10, and at least part of the magnetic member 40 is installed in the groove 51. A cover body can be provided on the groove 51, and the cover body can serve as a protective cover to protect the magnetic member 40 inside the rotating member 50. In other embodiments, the magnetic member 40 can also be embedded in the rotating member 50, or the magnetic member 40 can also be arranged on the surface of the rotating member 50 by means of adhesive or the like.

[0044] In one embodiment, if Figure 4As shown, the rotating member 50 has a first connecting portion 511 and a mounting portion 512, and the housing 10 is provided with a second connecting portion 16, and the first connecting portion 511 and the second connecting portion 16 are rotatably connected via a rotating shaft. The magnetic member 40 is fixedly mounted on the mounting portion 512. The first connecting portion 511 can be arranged on the side wall of the mounting portion 512, and the second connecting portion 16 can be arranged on the side wall of the housing 10, so that in the initial state ( Figure 1 ), the side of the rotating member 50 close to the second end surface 151 can be well fitted on the second end surface 151, so that in the initial state, the negative pressure adsorption fixing device is relatively compact as a whole, which is convenient for storage and carrying.

[0045] In one embodiment, if Figure 5 As shown, the negative pressure adsorption fixing device also includes a solar panel 60 and a battery. The solar panel 60 is mounted on the outer shell 10. The solar panel 60 is a component that can convert solar energy into electrical energy. The solar panel 60 has a light absorbing surface 61, and at least part of the light absorbing surface 61 is exposed from the outer shell 10. The battery is used to supply power to the negative pressure forming component 30, and the battery can store the electrical energy converted by the solar panel 60. As a result, the solar panel 60 can convert solar energy into electrical energy during the day and store it in the battery, which can improve the problem of insufficient battery life of the negative pressure adsorption fixing device. The user does not need to use the power supply to charge frequently, which improves the user experience.

[0046] Furthermore, the solar panel 60 is mounted on the second end surface 151, and the magnetic member 40 can be mounted on the side of the solar panel 60 away from the housing 10, and the magnetic member 40 exposes at least part of the light absorbing surface 61, so that in the initial state, the magnetic member 40 will not block the light absorbing surface 61, so that the solar panel 60 can work. Based on this, the magnetic member 40 can be designed to be annular or arc-shaped. For example, Figure 1 In the embodiment of the present invention, the mounting portion 512 of the magnetic member 40 and the rotating member 50 are both designed to be annular.

[0047] like Figure 7-9 In one embodiment, the negative pressure forming assembly 30 includes a driving member 31, a cylinder plug 32 and a cylinder barrel 33. The cylinder barrel 33 has a receiving chamber inside, which is communicated with the receiving chamber 11, and the cylinder plug 32 is arranged in the receiving chamber. The driving member 31 is used to drive the cylinder plug 32 so that the cylinder plug 32 is pulled to generate negative pressure in the receiving chamber 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 is working by controlling the start and stop of the driving member 31.

[0048] The driving member 31 may be a motor, and the output shaft of the motor may drive the cylinder plug 32 to move through a transmission mechanism, for example, the cylinder plug 32 may be driven to and fro through a crank mechanism.

[0049] like Figure 2 , Figure 7-9 In one embodiment, the negative pressure adsorption fixing device further includes an opening component 70. The opening component 70 includes a first movable portion 71 and a switch member 72, one end of the first movable portion 71 is disposed outside the receiving chamber 11, and the other end of the first movable portion 71 is disposed inside the receiving chamber 11. The first movable portion 71 can move toward the inside of the receiving chamber 11 to trigger the switch member 72 to start the negative pressure forming component 30. Thus, the user can operate the first movable portion 71 from the outside of the housing 10 to move so as to start the negative pressure forming component 30, which is convenient for the user to manipulate the first movable portion 71, and the user can also decide when to perform negative pressure adsorption.

[0050] In one embodiment, the adsorption chamber 21 of the suction member 20 has an adsorption port, and the adsorption port is used to abut on the adsorption surface. The movement direction of the first movable part 71 is parallel to the axial direction of the adsorption port. When the suction member 20 is adsorbed on the adsorption surface, the first movable part 71 can abut the adsorption surface, and move toward the inside of the receiving chamber 11 under the pressure of the adsorption surface, thereby starting the negative pressure forming component 30. Therefore, when the user presses the suction member 20 on the adsorption surface, the first movable part 71 can be automatically started, and the negative pressure forming component 30 and the user's pressing action can be performed simultaneously. The user does not need to operate the first movable part 71, so that the starting process of the negative pressure forming component 30 can be simplified. Preferably, the part of the first movable part 71 located outside the shell 10 is arranged inside the adsorption chamber 21 of the suction member 20. Of course, in other embodiments, the part of the first movable part 71 located outside the shell 10 can also be arranged outside the adsorption chamber 21.

[0051] In one embodiment, the switch member 72 is a two-way conversion switch, and the first movable portion 71 can also move toward the outside of the receiving chamber 11 to trigger the two-way conversion switch to start the negative pressure forming component 30. Since the suction member 20 may loosen during the suction process, when the suction member 20 loosens, the user needs to press the negative pressure adsorption fixing device again, which is troublesome. By setting a two-way conversion switch, the first movable portion 71 can start the negative pressure forming component 30 when it is pressed or released, thereby preventing the suction member 20 from loosening, so that the suction member 20 can be more stably adsorbed on the adsorption surface.

[0052] like Figure 7-9In one embodiment, the negative pressure adsorption fixing device further includes an air intake component 80, which is used to connect the receiving chamber 11 with the outside of the shell 10 so that the suction member 20 can be separated from the adsorption surface. By providing the air intake component 80, the user can actively and smoothly separate the suction member 20 from the adsorption surface. For example, the air intake component 80 includes a second movable portion 81 and a blocking portion, one end of the second movable portion 81 is arranged outside the shell 10, and the other end of the second movable portion 81 is arranged inside the shell 10; when the second movable portion 81 is subjected to a pressing force, the blocking portion can be moved to connect the air path between the receiving chamber 11 and the outside of the shell 10.

[0053] In other embodiments, the negative pressure adsorption fixing device can also stop working the negative pressure forming component 30 by pressing a button and disconnecting the circuit of the negative pressure forming component 30, so that the user can remove the suction member 20 from the adsorption surface.

[0054] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A negative pressure adsorption fixing device, characterized in that: include: A housing, wherein the housing has a receiving cavity inside; A suction member, the suction member is mounted on the housing, and the suction member is used to be adsorbed on the adsorption surface; an adsorption cavity is provided at one end of the suction member away from the housing, and the adsorption cavity is communicated with the receiving cavity; the adsorption cavity is used to cooperate with the adsorption surface to form a closed space; A negative pressure forming component, the negative pressure forming component is used to generate negative pressure in the receiving cavity so as to form negative pressure in the enclosed space; And a magnetic part, which is installed on the shell; the magnetic part is used for magnetic adsorption with the part to be fixed; the magnetic part can rotate relative to the shell, so that the magnetic part can rotate closer to and farther from the shell, so as to adjust the angle between the magnetic part and the shell.

2. The negative pressure adsorption fixing device according to claim 1, characterized in that: The shell has a first end and a second end opposite to each other along the axial direction of the shell, the suction member is installed at the first end of the shell, and the magnetic member is installed at the second end of the shell.

3. The negative pressure adsorption fixing device according to claim 2, characterized in that: The magnetic member and the housing rotate relatively along a rotation axis, and an axial direction of the rotation axis is perpendicular to an axial direction of the housing.

4. The negative pressure adsorption fixing device according to claim 1, characterized in that: The negative pressure adsorption fixing device also includes a rotating member, which is rotatably connected to the housing via a rotating shaft; and the magnetic member is fixedly mounted on the rotating member.

5. The negative pressure adsorption fixing device according to claim 4, characterized in that: A groove is provided on a side of the rotating member away from the housing, and at least a portion of the magnetic member is installed in the groove.

6. The negative pressure adsorption fixing device according to claim 4, characterized in that: The rotating member has a first connecting portion and a mounting portion, the housing is provided with a second connecting portion, the first connecting portion and the second connecting portion are rotatably connected via the rotating shaft; the magnetic member is fixedly mounted on the mounting portion.

7. The negative pressure adsorption fixing device according to claim 1, characterized in that: It also includes a solar panel and a battery. The solar panel is installed on the outer shell. The solar panel has a light absorbing surface. At least a portion of the light absorbing surface is exposed from the outer shell. The solar panel is used to convert solar energy into electrical energy. The battery is used to supply power to the negative pressure forming component. The battery can store the electrical energy converted by the solar panel.

8. The negative pressure adsorption fixing device according to claim 7, characterized in that: The magnetic component is installed on a side of the solar panel away from the housing, and the magnetic component exposes at least a portion of the light absorbing surface.

9. The negative pressure adsorption fixing device according to claim 8, characterized in that: The magnetic piece is annular or arc-shaped.

10. The negative pressure adsorption fixing device according to claim 1, characterized in that: The negative pressure forming component includes a driving member, a cylinder plug and a cylinder barrel. The interior of the cylinder barrel has a accommodating chamber, the accommodating chamber is communicated with the receiving chamber, and the cylinder plug is arranged in the accommodating chamber; the driving member is used to drive the cylinder plug to cause the cylinder plug to pull, so that negative pressure is generated in the receiving chamber.

11. The negative pressure adsorption fixing device according to claim 1, characterized in that: It also includes an opening component, which includes a first movable part and a switch component, one end of the first movable part is arranged outside the receiving cavity, and the other end of the first movable part is arranged inside the receiving cavity; the first movable part can move toward the inside of the receiving cavity to trigger the switch component to start the negative pressure forming component.

12. The negative pressure adsorption fixing device according to claim 11, characterized in that: The adsorption cavity of the adsorption member has an adsorption port, which is used to abut against the adsorption surface; the movement direction of the first movable part is parallel to the axial direction of the adsorption port; when the adsorption member is adsorbed on the adsorption surface, the first movable part can abut against the adsorption surface to move toward the inside of the accommodating cavity under the pressure of the adsorption surface.

13. The negative pressure adsorption fixing device according to claim 12, characterized in that: The switch member is a two-way conversion switch, and the first movable portion can also move toward the outside of the accommodating cavity to trigger the two-way conversion switch to start the negative pressure forming component.

14. The negative pressure adsorption fixing device according to claim 1, characterized in that: It also includes an air intake assembly, which is used to connect the receiving cavity with the outside of the shell so that the suction member can be separated from the suction surface.

15. The negative pressure adsorption fixing device according to claim 14, characterized in that: The air intake assembly includes a second movable part, one end of which is arranged outside the shell, and the other end of the second movable part is arranged inside the shell; the second movable part can open the air path between the accommodating cavity and the outside of the shell when subjected to pressing force.

Images