Dustproof cover, dustproof connecting assembly and electrical equipment

Abstract

The utility model relates to the technical field of equipment connection and dust prevention, in particular to a dustproof cover, a dustproof connection assembly and electrical equipment. The dustproof cover comprises an annular shell, a first dustproof layer and a second dustproof layer; the first dustproof layer is connected to the inner circumference of the annular shell, a first cutting groove is formed in the first dustproof layer, and the first cutting groove divides the first dustproof layer into a plurality of first sections which can be elastically gathered and separated; the second dustproof layer is connected to the inner circumference of the annular shell, a second cutting groove is formed in the second dustproof layer, and the second cutting groove divides the second dustproof layer into a plurality of second segments which can be elastically gathered and separated; a first dustproof cavity is defined by the annular shell, the first dustproof layer and the second dustproof layer. The dustproof cover is good in dustproof effect and convenient to use, and the connection terminal can be plugged into and pulled out of the jacks of the electronic and electrical equipment without moving the dustproof cover away from the jacks.

Description

Technical Field

[0001] This application relates to the technical field of dust prevention for device connection, and particularly to a dust cover, a dust-proof connection assembly, and an electrical device. Background Art

[0002] Electronic and electrical devices have widely entered people's lives and affect all aspects of life.

[0003] Whether for functions such as data transmission or charging (power supply), electronic and electrical devices usually have jacks. The jacks form channels for the interior of the electronic and electrical devices to contact the external environment. When using electronic devices, dust and debris are likely to enter the electronic devices through the jacks. Currently, the jacks are not dust-proof, so the exposed connection terminals in the jacks are likely to contact oxygen or water vapor in the air and cause oxidation. To protect the connection terminals, the usual measures are to make an independent cover to cover the jacks or use rubber plugs to block the jacks. Before connecting the device for charging (power supply) or data transmission, the cover needs to be opened or the rubber plug needs to be pulled out, and then the connection terminal is inserted into the jack. After use, the cover needs to be covered again or the rubber plug needs to be plugged back into the jack, and the operation is relatively cumbersome. Utility Model Content

[0004] This application provides a dust cover, a dust-proof connection assembly, and an electrical device, which can improve the dust-proof effect at the jacks of the device, simplify the connection operation at the jacks, and improve the convenience of use.

[0005] In a first aspect, this application provides a dust cover, including:

[0006] An annular housing;

[0007] A first dust-proof layer connected to the annular housing. The first dust-proof layer is provided with a first cut groove, and the first cut groove divides the first dust-proof layer into several first segments that can elastically gather and separate;

[0008] A second dust-proof layer connected to the annular housing. The second dust-proof layer is provided with a second cut groove, and the second cut groove divides the second dust-proof layer into several second segments that can elastically gather and separate;

[0009] A first dust-proof cavity is formed by enclosing between the annular housing, the first dust-proof layer, and the second dust-proof layer.

[0010] In some embodiments, the first cut groove is a three-pronged groove, a cross-shaped groove, or a rice-shaped groove;

[0011] And / or, the second cut groove is a three-pronged groove, a cross-shaped groove, or a rice-shaped groove.

[0012] In some embodiments, both the first cut groove and the second cut groove are centrosymmetric figures, and the symmetry centers of the first cut groove and the second cut groove coincide with the axis of the annular housing.

[0013] In some embodiments, the first cut groove and the second cut groove are arranged circumferentially offset along the annular housing.

[0014] In some embodiments, the first cut groove and the second cut groove have different shapes.

[0015] In some embodiments, the first dust-proof layer is located at the first end of the annular housing. A connecting portion is provided at the second end of the annular housing. The connecting portion extends from the second end of the annular housing towards the outer periphery of the annular housing, and a connecting hole is provided in the connecting portion.

[0016] In some embodiments, the first dust-proof layer and the second dust-proof layer are arranged parallel to each other.

[0017] In some embodiments, a third dust-proof layer is further included. The third dust-proof layer is provided with a third cut groove, and the third cut groove divides the third dust-proof layer into several third segments that can elastically gather and separate;

[0018] A second dust-proof cavity is formed by enclosing between the annular housing, the second dust-proof layer and the third dust-proof layer.

[0019] In a second aspect, the present application provides a dust-proof connection assembly, including a first connecting member, a second connecting member, and the dust-proof cover according to any one of the above. The first connecting member is provided with a connection jack that cooperates with the second connecting member, and the dust-proof cover covers the outer periphery of the connection jack and is connected to the first connecting member.

[0020] In a third aspect, the present application provides an electrical device, including a device body and the dust-proof connection assembly in the above embodiments, and the first connecting member is provided on the device body.

[0021] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art: Just cover the dust-proof cover on the jack of the device through the annular housing. When a connection terminal such as a plug is not inserted into the jack of the device, multiple first segments of the first dust-proof layer gather into a whole to play a first-level dust-proof role, and only a very small amount of dust can enter the first dust-proof cavity through the first cut groove; multiple second segments of the second dust-proof layer gather into a whole to play a second-level dust-proof role. Due to the isolation of the first dust-proof layer, the air in the first dust-proof cavity is approximately in a non-flowing state, and the dust in the first dust-proof cavity is very difficult to pass through the second cut groove of the second dust-proof layer to reach the jack of the device.

[0022] When it is necessary to insert a connection terminal such as a plug into the jack of a device, the connection terminal can be directly inserted into the jack through the first cutting groove and the second cutting groove; when the connection terminal passes through the first cutting groove, it squeezes a plurality of first split petals, causing the plurality of first split petals to undergo elastic deformation and separate from each other; when the connection terminal passes through the second cutting groove, it squeezes a plurality of second split petals, causing the plurality of second split petals to undergo elastic deformation and separate from each other.

[0023] When pulling the connection terminal out of the jack of the device, the second split petals recover their deformation and elastically gather together, and the second dust-proof layer automatically returns to the dust-proof state of closing the jack; the first split petals recover their deformation and elastically gather together, and the first dust-proof layer automatically returns to the dust-proof state of closing the jack and the first dust-proof cavity. There is no need to remove and reinstall the dust cover, which improves the convenience of operation. Brief Description of the Drawings

[0024] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0027] Figure 1 Top view of the dust cover provided by an embodiment of the present application;

[0028] Figure 2 Top view of the dust cover provided by another embodiment of the present application;

[0029] Figure 3 Front view of the dust cover provided by an embodiment of the present application;

[0030] Figure 4 Side view of the dust cover provided by an embodiment of the present application;

[0031] Figure 5 Longitudinal sectional view of the dust cover provided by an embodiment of the present application;

[0032] Figure 6 Top view of the dust-proof connection assembly provided by an embodiment of the present application;

[0033] Figure 7 is Figure 6 a longitudinal sectional view of the dust-proof connection component in

[0034] Description of the reference numerals in the drawings:

[0035] 10 - annular housing; 11 - connecting portion; 20 - first dust-proof layer; 21 - first cut groove; 30 - second dust-proof layer; 31 - second cut groove; 40 - first connecting member; 50 - second connecting member. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] For ease of description, spatially relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure relative to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "upper", "front", "rear", etc. Such spatially relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or attitude change or movement state change, then these directional indications will also change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "on other elements or features". Therefore, the exemplary term "below" may include the orientations of above and below. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatially relative relationship descriptors used in the text are interpreted accordingly.

[0039] In order to solve the problem in the prior art that when a connection terminal is connected to a jack of a device, it is necessary to remove a dust cover or a dust plug, resulting in cumbersome operation. The present application provides a dust cover, a dust-proof connection assembly and an electrical device, which can ensure good dust-proof performance and can realize the connection between the connection terminal and the jack of the device without removing the dust cover, thereby improving the convenience of operation.

[0040] An embodiment of the present application provides a dust cover, as Figure 1 and Figures 3 to 5 shown. The dust cover mainly includes an annular housing 10, a first dust-proof layer 20 and a second dust-proof layer 30. The annular housing 10 has a structure of an annular housing 10 with both ends open. The first end of the annular housing 10 is used for a connection terminal such as a plug to be inserted, and the second end of the annular housing 10 is used to be connected to the device, so that the annular housing 10 is arranged around the outer periphery of the jack of the device to protect the jack.

[0041] Both the first dust-proof layer 20 and the second dust-proof layer 30 are connected to the inner periphery of the annular housing 10. The first dust-proof layer 20 is arranged near the first end of the annular housing 10, and the second dust-proof layer 30 is arranged near the second end of the annular housing 10. By means of the first dust-proof layer 20 and the second dust-proof layer 30, the openings at the first end and the second end of the annular housing 10 are separated, so as to play a role in dust-proofing the jack. In order to ensure that the connection terminal can pass through the first dust-proof layer 20 and the second dust-proof layer 30 and be inserted into the jack of the device, the first dust-proof layer 20 is provided with a first cut groove 21, and the first cut groove 21 divides the first dust-proof layer 20 into several first lobes that can elastically gather and separate; the second dust-proof layer 30 is provided with a second cut groove 31, and the second cut groove 31 divides the second dust-proof layer 30 into several second lobes that can elastically gather and separate; the annular housing 10, the first dust-proof layer 20 and the second dust-proof layer 30 enclose a first dust-proof cavity.

[0042] The elastic gathering and separation referred to in the present application mainly means that both the first lobes and the second lobes can undergo elastic deformation. In a state without external force extrusion, the multiple first lobes of the first dust-proof layer 20 maintain their initial shapes, gather together and are generally in the same plane; the multiple second lobes of the second dust-proof layer 30 maintain their initial shapes, gather together and are generally in the same plane. When subjected to external force extrusion, both the first lobes and the second lobes can undergo elastic bending deformation, so that the first lobes gathered in the same plane are separated from each other, and the second lobes gathered in the same plane are separated from each other. After the external force extrusion is removed, both the first lobes and the second lobes can recover their initial shapes under the action of their own elasticity.

[0043] In other words, both the first dust-proof layer 20 and the second dust-proof layer 30 are made of elastic materials such as rubber and silica gel. The annular housing 10 can be made of the same materials as the first dust-proof layer 20 and the second dust-proof layer 30. One of the first dust-proof layer 20 and the second dust-proof layer 30 can be integrally formed with the annular housing 10, and the other can be connected to the inner circumference of the annular housing 10 by means of gluing or hot melting. Then, a first cut groove 21 is formed through the first dust-proof layer 20 from the first end opening of the annular housing 10, and a second cut groove 31 is formed through the second dust-proof layer 30 from the second end opening of the annular housing 10.

[0044] During the installation and use process, only need to cover the dust-proof cover on the jack of the device through the annular housing 10, so that the second end of the annular housing 10 surrounds the outer circumference of the jack. When the connection terminal such as a plug is not inserted into the jack of the device, multiple first segments of the first dust-proof layer 20 gather together to form a whole to play a first-level dust-proof role, and only a very small amount of dust can enter the first dust-proof cavity through the first cut groove 21; multiple second segments of the second dust-proof layer 30 gather together to form a whole to play a second-level dust-proof role. Due to the isolation of the first dust-proof layer 20, the air in the first dust-proof cavity is approximately in a non-flowing state, and the dust in the first dust-proof cavity is difficult to pass through the second cut groove 31 of the second dust-proof layer 30 to reach the jack of the device.

[0045] When it is necessary to insert the connection terminal such as a plug into the jack of the device, just directly insert the connection terminal through the first cut groove 21 and the second cut groove 31 into the jack; when the connection terminal passes through the first cut groove 21, it squeezes multiple first segments, causing the multiple first segments to elastically deform and separate from each other; when the connection terminal passes through the second cut groove 31, it squeezes multiple second segments, causing the multiple second segments to elastically deform and separate from each other.

[0046] When the connection terminal is pulled out of the jack of the device, the second segments recover their deformation and elastically gather together, and the second dust-proof layer 30 automatically returns to the dust-proof state of closing the jack. The first segments recover their deformation and elastically gather together, and the first dust-proof layer 20 automatically returns to the dust-proof state of closing the jack and the first dust-proof cavity. There is no need to disassemble and reinstall the dust-proof cover, which improves the convenience of operation.

[0047] Such as Figure 1 and Figure 5As shown, in a specific embodiment provided by the present application, the annular housing 10 adopts a cylindrical structure with a rectangular cross-section; both the first dust-proof layer 20 and the second dust-proof layer 30 are square and adapted to the inner circumference of the annular housing 10. The first cutting groove 21 is a cross-shaped groove, which can be formed by a single punching with a cross-shaped cutter, or can be formed by distributed punching with a linear cutter. The cross-shaped groove evenly divides the first dust-proof layer 20 to form four first sub-petals; when subjected to external extrusion, the four first sub-petals can undergo elastic deformation and separate along the first cutting groove 21; after removing the extrusion limit, the four first sub-petals can reset to a dust-proof state where they are generally in the same plane, achieving the first layer of protection for the jack, so that only a very small amount of dust can enter the first dust-proof cavity between the first dust-proof layer 20 and the second dust-proof layer 30 through the first cutting groove 21.

[0048] The second cutting groove 31 on the second dust-proof layer 30 also adopts a cross-shaped groove. The processing and forming process of the second cutting groove 31 can refer to the first cutting groove 21. The second cutting groove 31 evenly divides the second dust-proof layer 30 to form four second sub-petals; when subjected to external extrusion, the four second sub-petals can undergo elastic deformation and separate along the second cutting groove 31; after removing the extrusion limit, the four second sub-petals can reset to a dust-proof state where they are generally in the same plane, forming the second layer of protection for the jack.

[0049] Due to the isolation effect of the first dust-proof layer 20 and the second dust-proof layer 30, the air in the first dust-proof cavity hardly flows, making it difficult for the dust in the first dust-proof cavity to reach the jack through the second cutting groove 31, greatly improving the dust-proof effect of the dust-proof cover.

[0050] And when inserting the connection terminal, there is no need to remove the dust-proof cover. Just insert the connection terminal through the first cutting groove 21 and the second cutting groove 31 to squeeze the first sub-petals and the second sub-petals to undergo elastic deformation; after pulling out the connection terminal, the first sub-petals recover their deformation and gather together, automatically restoring to the dust-proof state, and the second sub-petals recover their deformation and gather together, automatically restoring to the dust-proof state, improving the convenience of operation.

[0051] Both the above-mentioned first cutting groove 21 and the second cutting groove 31 adopt cross-shaped grooves. The cross-shaped first cutting groove 21 evenly divides the first dust-proof layer 20 into four first sub-petals of comparable size. The connection terminal is inserted along the center of the first cutting groove 21, and the four first sub-petals generate the same degree of deformation, facilitating the connection terminal to pass through the first dust-proof layer 20 and the first sub-petals to synchronously recover their deformation; the cross-shaped second cutting groove 31 evenly divides the second dust-proof layer 30 into four second sub-petals of comparable size. The connection terminal is inserted along the center of the second cutting groove 31, and the four second sub-petals can generate the same degree of deformation, facilitating the connection terminal to pass through the second dust-proof layer 30 and the second sub-petals to synchronously recover their deformation.

[0052] It can be understood that the first grooving 21 can also adopt a three-pronged groove (refer to Figure 2 ), a cross-shaped groove or a groove with other shapes; the second grooving 31 can also adopt a three-pronged groove, a cross-shaped groove or a groove with other shapes. The first grooving 21 and the second grooving 31 preferably adopt a centrosymmetric figure, and at the same time, the symmetry center of the first grooving 21 and the symmetry center of the second grooving 31 coincide with the axis of the annular housing 10. When installing the dust cover, the axis of the annular housing 10 is aligned with the axis of the jack, so that during the insertion process of the connection terminal, it can be inserted along the symmetry center of the first grooving 21 and the symmetry center of the second grooving 31, uniformly squeezing the first split flap and the second split flap to deform, facilitating the connection terminal to pass through the first dust-proof layer 20 and the second dust-proof layer 30; at the same time, it is beneficial for the first split flap and the second split flap to restore the deformation and maintain a good dust-proof state after the connection terminal is pulled out.

[0053] The first dust-proof layer 20 and the second dust-proof layer 30 are preferably arranged parallel to each other, so that the distances from each part of the first dust-proof layer 20 to the second dust-proof layer 30 are equal, providing the same and sufficient bending deformation space for each first split flap of the first dust-proof layer 20.

[0054] The shapes of the first grooving 21 and the second grooving 31 can be the same or different. When the shapes of the first grooving 21 and the second grooving 31 are the same, it is convenient to punch and cut the first grooving 21 and the second grooving 31 with a cutter of the same model. When the shapes of the first grooving 21 and the second grooving 31 are different, it is convenient for the two to be misaligned in the circumferential direction of the annular housing 10, reducing the probability of dust being directly blown through the first grooving 21 and the second grooving 31.

[0055] When the shapes of the first grooving 21 and the second grooving 31 are the same, the first grooving 21 and the second grooving 31 can also be arranged with a circumferential misalignment along the annular housing 10, so that the same groove edges of the first grooving 21 and the second grooving 31 are misaligned to a certain extent in the circumferential direction of the annular housing 10, and the probability of dust being directly blown through the first grooving and the second grooving 31 can also be reduced.

[0056] Exemplarily, when both the first grooving 21 and the second grooving 31 are cross-shaped grooves, the symmetry centers of the first grooving 21 and the second grooving 31 both coincide with the axis of the annular housing 10, and the first grooving 21 and the second grooving 31 are arranged with a 45° circumferential misalignment along the annular housing 10. Such an arrangement makes the groove edges of the first grooving 21 and the groove edges of the second grooving 31 misaligned by 45° in the circumferential direction of the annular housing 10.

[0057] When both the first cut groove 21 and the second cut groove 31 are three-fork grooves, the adjacent groove sides of the first cut groove 21 are spaced 120°, the adjacent groove sides of the second cut groove 31 are spaced 120°, the symmetry centers of the first cut groove 21 and the second cut groove 31 both coincide with the axis of the annular housing 10, and the first cut groove 21 and the second cut groove 31 can be arranged with a 60° circumferential dislocation along the annular housing 10.

[0058] As Figure 1 and Figure 2 shown, in order to facilitate connecting and covering the dust-proof cover outside the periphery of the jack to protect the jack, the dust-proof cover provided in the embodiment of the present application further provides a connecting portion 11 at the second end of the annular housing 10, that is, the end away from the first dust-proof layer 20. The connecting portion 11 extends from the second end of the annular housing 10 to the outer periphery of the annular housing 10, and can adopt the shape of the connecting ear shown in the figure. A connecting hole is opened on the connecting portion 11 or the connecting ear, so that the dust-proof cover can be installed and fixed by passing a fastening member such as a screw through the connecting hole. Two groups of connecting ears can be provided on the opposite sides of the annular housing 10 as shown in the figure, or four groups can be evenly provided around the annular housing 10 respectively.

[0059] It can be understood that the dust-proof cover can not only be installed and fixed through the connecting portion 11, but also the second end of the annular housing 10 can be directly sleeved on the outer periphery of the part to be protected for fixation. The cross-section of the annular housing 10 can not only be rectangular, but also can be set to be circular, elliptical or other shapes, and the shapes of the first dust-proof layer 20 and the second dust-proof layer 30 are adapted to the cross-section shape of the annular housing 10.

[0060] In order to improve the dust-proof effect, in some embodiments, the dust-proof cover may further include a third dust-proof layer connected to the inner circumference of the annular housing 10. The third dust-proof layer is arranged on the side of the second dust-proof layer 30 away from the first dust-proof layer 20, that is, the third dust-proof layer is arranged close to the second end of the annular housing 10, so as to form a second dust-proof cavity between the inner circumference of the annular housing 10, the second dust-proof layer 30 and the third dust-proof layer. The third dust-proof layer is also made of an elastic material, and the third dust-proof layer is provided with a third cut groove, and the third cut groove divides the third dust-proof layer into several third lobes that can elastically gather and separate. The settings of the third cut groove and the third dust-proof layer can respectively refer to the first cut groove 21, the second cut groove 31, and the first dust-proof layer 20 and the second dust-proof layer 30.

[0061] The setting of the third dust-proof layer not only adds an additional protective layer, but also provides a buffer space for dust accumulation in the second dust-proof cavity formed between the second dust-proof layer 30 and the third dust-proof layer. The air flow is relatively slower than that in the first dust-proof cavity, so that the dust passing through the first cut groove 21 and the second cut groove 31 accumulates in the second dust-proof cavity.

[0062] As Figure 6 and Figure 7As shown in the figure, an embodiment of the present application further provides a dust-proof connection assembly, including a first connector 40, a second connector 50, and the dust-proof cover provided in the above embodiment. The second connector 50 can be a plug, and the first connector 40 is provided with a connection jack for plugging the plug. The dust-proof cover is installed and connected to the first connector 40, so that the annular housing 10 covers the outer periphery of the connection jack.

[0063] An embodiment of the present application further provides an electrical device, including a device body and the dust-proof connection assembly provided in the above embodiment. The first connector 40 is arranged on the device body. The dust-proof cover is connected to the first connector 40 to protect the connection jack on the first connector 40. The second connector 50 is used to cooperate with the connection jack of the first connector 40 to realize the electrical connection between the device body and an external device or a power source.

[0064] The above dust-proof cover and dust-proof connection assembly can be applied not only to electrical devices, but also to the connection between daily electronic devices. This application will not elaborate further.

[0065] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0066] Although the terms first, second, third, etc. may be used in this document to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0067] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A dust cover, characterized in that, Comprising: A circular housing; A first dust-proof layer connected to the circular housing, the first dust-proof layer having a first cut groove, the first cut groove dividing the first dust-proof layer into a plurality of first lobes capable of elastically converging and separating; A second dust-proof layer connected to the circular housing, the second dust-proof layer having a second cut groove, the second cut groove dividing the second dust-proof layer into a plurality of second lobes capable of elastically converging and separating; A first dust-proof cavity is formed by enclosing between the circular housing, the first dust-proof layer and the second dust-proof layer.

2. The dust cover according to claim 1, wherein The first cut groove is a three-pronged groove, a cross-shaped groove or a rice-shaped groove; And / or, the second cut groove is a three-pronged groove, a cross-shaped groove or a rice-shaped groove.

3. The dust cover according to claim 2, characterized in that, Both the first cut groove and the second cut groove are centrosymmetric figures, and the symmetry centers of the first cut groove and the second cut groove coincide with the axis of the circular housing.

4. The dust cover according to claim 3, characterized in that, The first cut groove and the second cut groove are arranged in a circumferential dislocation along the circular housing.

5. The dust cover according to claim 3, characterized in that, The shapes of the first cut groove and the second cut groove are different.

6. The dust cover according to any one of claims 1-5, characterized in that, The first dust-proof layer is located at the first end of the circular housing, and a connecting portion is provided at the second end of the circular housing. The connecting portion extends from the second end of the circular housing towards the outer periphery of the circular housing, and the connecting portion is provided with a connecting hole.

7. The dust cover according to claim 6, characterized in that, The first dust-proof layer and the second dust-proof layer are arranged parallel to each other.

8. The dust cover according to claim 6, characterized in that, It further includes a third dust-proof layer, the third dust-proof layer having a third cut groove, the third cut groove dividing the third dust-proof layer into a plurality of third lobes capable of elastically converging and separating; A second dust-proof cavity is formed by enclosing between the circular housing, the second dust-proof layer and the third dust-proof layer.

9. A dust-proof connection component, characterized in that, Comprising a first connecting member, a second connecting member and the dust-proof cover according to any one of claims 1-8, the first connecting member being provided with a connecting jack for cooperating with the second connecting member, and the dust-proof cover covering the outer periphery of the connecting jack and being connected to the first connecting member.

10. An electrical device, characterized in that, Comprising an equipment body and the dust-proof connecting assembly according to claim 9, the first connecting member being provided on the equipment body.

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