Self-resetting dustproof cover assembly and lock

Abstract

The utility model relates to the technical field of door locks, in particular to a self-resetting dustproof cover assembly and a lockset, the self-resetting dustproof cover assembly comprises a handle, a dustproof cover, an elastic piece, a protruding piece and a connecting piece; the handle is provided with a lock hole, a through hole and a double-V-shaped spiral curved surface; the lock hole and the through hole are distributed along a first direction; the double-V-shaped spiral curved surface is arranged on the peripheral side of the through hole; the double-V-shaped spiral curved surface is provided with a first low-point area and a second low-point area which are arranged in the first direction. At least part of the connecting piece is inserted into the through hole, and the connecting piece is connected to the dustproof cover; at least part of the elastic piece is arranged in the through hole, one end of the elastic piece acts on the handle, and the other end of the elastic piece acts on the connecting piece; the elastic piece has elastic acting force which faces the inner side of the handle all the time and acts on the connecting piece. The protruding piece is arranged on the dustproof cover and attached to the double-V-shaped spiral curved surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to door lock technical field, concretely relates to self-resetting dust cover assembly and lockset. BACKGROUND

[0002] The door lock is provided with a lock hole, dust and sundries are easy to enter the door lock through the lock hole, therefore, part door lock will be equipped with dust cover, when the door lock is in the non -use stage, dust cover covers the lock hole opening to avoid dust and sundries through the lock hole enter the door lock, prolongs the service life of door lock.

[0003] The conventional dust cover needs the user to move it to the predetermined position accurately to switch the lock hole between the opening state and the closing state, the user can need to move for many times or fix the dust cover after moving it, leading to the experience of the user not being good, in addition, the user is easy to forget to reset the dust cover after unlocking, thereby leading to the lock hole being exposed to the outside environment, making the service life of the door lock not as expected, to avoid this point, the use of the user needs to be required, further reducing the experience of the user.

[0004] Therefore, how to solve the above-mentioned prior art existing user's operation dust cover experience not good and the service life of the door lock is easy not as expected, becomes the subject that the utility model wants to research and solve. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a self-resetting dust cover assembly and lockset.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] Self-resetting dust cover assembly, including handle, dust cover, elastic part, convex piece, connecting piece;

[0008] The handle is provided with a lock hole, a perforation and a double-V-shaped spiral curved surface;The lock hole and the perforation are distributed along the first direction;

[0009] The double-V-shaped spiral curved surface is arranged on the circumferential side of the perforation;The double-V-shaped spiral curved surface has a first low point area and a second low point area arranged along the first direction;

[0010] At least part of the connecting piece is inserted into the perforation, and the connecting piece is connected to the dust cover;

[0011] At least part of the elastic part is arranged in the perforation, one end of the elastic part acts on the handle, and the other end of the elastic part acts on the connecting piece;

[0012] The elastic part has an elastic force always acting on the connecting piece and the inside of the handle, so as to promote the automatic reset of the dust cover.

[0013] The convex piece is arranged on the dustproof cover and is attached to the double-V-shaped spiral surface;

[0014] The self-resetting dustproof cover assembly has a locking state and an opening state. In the locking state, the convex piece is at least in the first low point area, and the dustproof cover covers the lock hole opening. When the dustproof cover is in the opening state, the convex piece is at least in the second low point area, and the dustproof cover is away from the lock hole and extends in the first direction.

[0015] In the above scheme, when in use, the handle is installed on the door, at least part of the dustproof cover is attached to the outer side surface of the handle, and the dustproof cover can rotate relative to the handle around the axis of the connecting piece. Initially, the dustproof cover is in the locking state, the convex piece is at least in the first low point area, and part of the dustproof cover covers the lock hole opening. After rotating the dustproof cover in the clockwise direction or the counterclockwise direction and the rotation angle is less than 90 degrees, due to the fact that the elastic piece always has a force towards the inner side of the handle, the dustproof cover can automatically reset to re-enter the locking state. After rotating the dustproof cover in the clockwise direction or the counterclockwise direction and the rotation angle is greater than 90 degrees, again due to the elastic piece, the part of the dustproof cover for covering the lock hole automatically enters the predetermined area. At this time, the dustproof cover is in the opening state, the convex piece is at least in the second low point area, and compared to when in the locking state, the dustproof cover has rotated by 180 degrees. The double-V-shaped spiral surface cooperates with the elastic piece and the convex piece to adjust the dustproof cover. During the process in which the convex piece moves away from the first low point area or the second low point area, the force of the elastic piece gradually increases within a certain time period, thereby providing sufficient force for subsequent traction of the dustproof cover.

[0016] Through the above arrangement, it is not necessary to accurately rotate the dustproof cover to make it enter the locking state or the opening state, thereby avoiding the situation that the dustproof cover is not closed due to the fact that the dustproof cover is not moved to the position, improving the user's experience, and avoiding the fact that the service life of the door lock is shortened due to the user's mistake. At the same time, when rotating the dustproof cover, only the hand needs to be used for operation without the aid of tools, the operation is simple, and the adjustment process is fast. In addition, the overall structure is simple, and even if the dustproof cover is deviated due to external factors, it can also automatically reset, thereby having the anti-vibration feature.

[0017] Further technical solutions also include a limiting part, at least part of which is arranged in the through hole, and the limiting part is connected to the connecting piece to limit the separation of the connecting piece from the through hole. The limiting part and the dustproof cover can be regarded as a plugging structure, which can not only plug the through hole opening but also plug the connecting piece in the through hole.

[0018] Further technical solutions, the end of the connecting piece away from the dustproof cover is provided with a threaded hole, the limiting part is provided as a screw, and the limiting part is threadedly connected with the connecting piece. The limiting part and the connecting piece are threadedly connected and can rotate together.

[0019] Further technical solutions, the screw rod outside is sleeved with a gasket. The gasket is arranged between the screw head and the connecting piece, which can reduce friction and buffer.

[0020] Further technical solutions, the elastic member is arranged in a spring structure. The elastic member can adopt different structures or objects according to actual needs, such as a rubber elastic element.

[0021] Further technical solutions, the elastic member is arranged as a compression spring.

[0022] Further technical solutions, the convex member includes two convex points arranged on the dust cover and fitted on the double-V-shaped spiral surface, and the two convex points are respectively arranged on the symmetric two sides of the connecting piece.

[0023] When the dust cover is in the locked state or the open state, the two convex points are respectively in the first low point area and the second low point area.

[0024] In the first direction, the first low point area and the second low point area are respectively arranged on the two sides of the through hole.

[0025] The arrangement of the two convex points makes the movement of the dust cover more stable, and of course, the use of a single convex point is not limited. When the dust cover is in the locked state or the open state, the two convex points are respectively in the first low point area and the second low point area, at this time, the force of the elastic member is at the minimum point, and when the two convex points are away from the first low point area and the second low point area, the force of the elastic member is at least not at the minimum point.

[0026] Further technical solutions, the side surface of the convex point away from the dust cover is a slope or an arc surface.

[0027] The side surface of the convex point away from the dust cover can be arranged as a slope or an arc surface, and such arrangement reduces the resistance received by the convex point during movement, and facilitates quick rotation of the dust cover.

[0028] Further technical solutions, the double-V-shaped spiral surface is composed of two curved surfaces, wherein two curved surfaces are arranged on the two sides of the first low point area, and the other two curved surfaces are arranged on the two sides of the second low point area.

[0029] The two convex points are respectively arranged as a near-point convex point and a far-point convex point, when the dust cover is in the locked state, the near-point convex point and the far-point convex point are respectively in the first low point area and the second low point area; when the dust cover is in the open state, the near-point convex point and the far-point convex point are respectively in the second low point area and the first low point area.

[0030] When the near-point convex point is attached to any one of the two curved surfaces close to the first low-point area, the near-point convex point can be moved to the first low-point area under the action of the elastic member; when the near-point convex point is attached to any one of the two curved surfaces close to the second low-point area, the near-point convex point can be moved to the second low-point area under the action of the elastic member; the far-point convex point can be arranged in reference to the near-point convex point.

[0031] Also provided herein is a lock including the self-resetting dust cover assembly of any of the above embodiments.

[0032] As to the "first", "second", etc. used herein, they do not particularly mean the order or sequence, nor limit the present application, but are merely used to distinguish components or operations described by the same technical terms.

[0033] As to the "connection" or "positioning" used herein, it can mean that two or more components or devices are in direct physical contact with each other or in indirect physical contact with each other, or can mean that two or more components or devices are in operation or action with each other.

[0034] As to the "contain", "include", "have", etc. used herein, they are all open terms, i.e. meaning containing but not limited to.

[0035] As to the words (terms) used herein, except for special notes, they generally have the usual meanings of each word used in this field, in the content of the present application, and in the special content. Some words used to describe the present application will be discussed below or elsewhere in the specification to provide additional guidance for those skilled in the art on the description of the present application.

[0036] As to the "front", "back", "up", "down", "left", "right", etc. used herein, they are all directional words, which in the present application are only used to illustrate the positional relationship between structures, and are not used to limit the protection scheme and the specific direction in actual implementation.

[0037] The working principle and advantages of the utility model are as follows: when using, the handle is installed on the door, at least part of the dust cover is attached to the outer side surface of the handle, and the dust cover can rotate relative to the handle around the connecting piece axis; initially, the dust cover is in the locked state, the convex piece is at least in the first low point area, and part of the dust cover covers the lock hole opening, after rotating the dust cover in the clockwise direction or the counterclockwise direction and the rotation angle is less than 90 degrees, because the elastic piece always has the force towards the inner side of the handle, the dust cover can be automatically reset to enter the locked state again; after rotating the dust cover in the clockwise direction or the counterclockwise direction and the rotation angle is greater than 90 degrees, because of the elastic piece, the part of the dust cover for covering the lock hole automatically enters the predetermined area, at this time, the dust cover is in the open state, the convex piece is at least in the second low point area, and compared with when being in the locked state, the dust cover rotates by one hundred and eighty degrees; the double V-shaped spiral curved surface cooperates with the elastic piece to adjust the dust cover, and in the process that the convex piece moves away from the first low point area or the second low point area, the force of the elastic piece gradually increases in a certain time period, thereby providing sufficient force for subsequent traction of the dust cover movement. Through the above setting, the dust cover does not need to be accurately rotated to enter the locked state or the open state, thereby avoiding the situation that the dust cover is not closed due to the dust cover not being moved to the position, improving the use experience of the user, avoiding the shortening of the service life of the door lock due to the mistake of the user; meanwhile, when rotating the dust cover, only the hand operation is needed without the aid of tools, the operation is simple, and the adjustment process is fast; in addition, the overall structure is simple, and even if the dust cover is deviated due to the vibration caused by external factors, the dust cover can also be automatically reset, and the dust cover has the anti-vibration characteristic. BRIEF DESCRIPTION OF DRAWINGS

[0038] ATTACHMENT Figure 1 It is the explosion map of the self-resetting dust cover assembly of the utility model embodiment;

[0039] ATTACHMENT Figure 2 It is Figure 1 It is the enlarged view of A in the middle;

[0040] ATTACHMENT Figure 3 It is the structure schematic view of the dust cover, the convex piece and the connecting piece of the utility model embodiment;

[0041] ATTACHMENT Figure 4 It is Figure 3 It is the structure schematic view of another perspective;

[0042] ATTACHMENT Figure 5 It is the structure schematic view of the self-resetting dust cover assembly of the utility model embodiment in the locked state;

[0043] ATTACHMENT Figure 6 It is Figure 5 It is the structure schematic view of another perspective;

[0044] ATTACHMENT Figure 7A sectional view of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0045] The Figure 8 A demonstration diagram in one application form of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0046] The Figure 9 A structural schematic diagram of the self-resetting dustproof cover assembly in an open state;

[0047] The Figure 10 A first use state schematic diagram of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0048] The Figure 11 A second use state schematic diagram of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0049] The Figure 12 A third use state schematic diagram of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0050] The Figure 13 A fourth use state schematic diagram of the self-resetting dustproof cover assembly of the embodiment of the present application;

[0051] The Figure 14 For Figure 7 An enlarged view of B.

[0052] In the above drawings: 1, handle; 11, lock hole; 12, through hole; 13, double-V-shaped spiral curved surface; 131, first low point area; 132, second low point area; 2, dustproof cover; 3, elastic piece; 4, protruding piece; 5, connecting piece; 51, threaded hole; 6, limiting part; 7, gasket. DETAILED DESCRIPTION

[0053] The present application will be further described below in conjunction with the drawings and embodiments:

[0054] Embodiment: The present application will be clearly explained below by means of drawings and detailed description, and any person skilled in the art can change and modify the technology taught by the present application after understanding the embodiments of the present application, without departing from the spirit and scope of the present application.

[0055] The terms used in this paper are only for describing specific embodiments and are not intended to limit the present application. The singular forms such as "a", "this", "this", "this" and "the" as used herein also include the plural forms.

[0056] Referring to Figures 1-14 , the self-resetting dustproof cover assembly comprises a handle 1, a dustproof cover 2, an elastic piece 3, a protruding piece 4, and a connecting piece 5;

[0057] The handle 1 is provided with a lock hole 11, a through hole 12 and a double-V-shaped spiral curved surface 13; the lock hole 11 and the through hole 12 are distributed along a first direction;

[0058] The double-V-shaped spiral curved surface 13 is arranged on the circumferential side of the through hole 12; the double-V-shaped spiral curved surface 13 has a first low point area 131 and a second low point area 132 arranged along the first direction;

[0059] At least part of the connecting piece 5 is inserted into the through hole 12, and the connecting piece 5 is connected to the dustproof cover 2;

[0060] At least part of the elastic piece 3 is arranged in the through hole 12, one end of the elastic piece 3 acts on the handle 1, and the other end of the elastic piece 3 acts on the connecting piece 5;

[0061] The elastic piece 3 has an elastic force always acting on the inside of the handle 1 and acting on the connecting piece 5, so as to facilitate the automatic reset of the dustproof cover 2;

[0062] The protruding piece 4 is arranged on the dustproof cover 2 and is attached to the double-V-shaped spiral curved surface 13;

[0063] The self-resetting dustproof cover assembly has a locking state and an opening state; in the locking state, the protruding piece 4 is at least in the first low point area 131, and the dustproof cover 2 covers the opening of the lock hole 11; when the dustproof cover 2 is in the opening state, the protruding piece 4 is at least in the second low point area 132, and the dustproof cover 2 is away from the lock hole 11 and extends along the first direction.

[0064] The length extension direction of the handle 1 is defined as the X direction, and the first direction in the present application is parallel to Figure 1 the X direction.

[0065] It should be noted that the inside of the handle 1 and the outside of the handle 1 can be understood as follows: taking the handle 1 installed on the door and the door in the closed state as an example, taking the house as a reference, the handle 1 is installed on the side of the door away from the inside of the house, at this time, the inside of the house is the inside of the handle 1, and the outside of the house is the outside of the handle 1. The first direction is referred to the accompanying drawings, and no more explanation is given.

[0066] In use, the handle 1 is installed on the door, at least part of the dust cover 2 is attached to the outer surface of the handle 1, and the dust cover 2 can rotate relative to the handle 1 around the axis of the connecting piece 5; initially, the dust cover 2 is in a locked state, the protruding piece 4 is at least in the first low point area 131, and part of the dust cover 2 covers the opening of the lock hole 11; after rotating the dust cover 2 in the clockwise direction or the counterclockwise direction and the rotation angle is less than 90 degrees, due to the elastic piece 3 always having a force towards the inner side of the handle 1, the dust cover 2 can automatically reset to re-enter the locked state; after rotating the dust cover 2 in the clockwise direction or the counterclockwise direction and the rotation angle is greater than 90 degrees, again due to the elastic piece 3, the part of the dust cover 2 used to cover the lock hole 11 automatically enters the predetermined area, at this time, the dust cover 2 is in an open state, the protruding piece 4 is at least in the second low point area 132, and compared to when it is in the locked state, the dust cover 2 has rotated by 180 degrees; the double-V-shaped spiral curved surface 13 cooperates with the protruding piece 4 and the elastic piece 3 to adjust the dust cover 2, and in the process of the protruding piece 4 moving away from the first low point area 131 or the second low point area 132, the force of the elastic piece 3 gradually increases within a certain time period, providing sufficient force for subsequent traction of the dust cover 2.

[0067] As Figure 10 , Figure 11 , the angle a and the angle b are less than ninety degrees, and after the dust cover 2 is loosened, the dust cover 2 can automatically move to enter the locked state; as Figure 12 , Figure 13 , the angle c and the angle d are greater than ninety degrees, and after the dust cover 2 is loosened, the dust cover 2 can automatically move to enter the open state.

[0068] Through the above settings, it is not necessary to accurately rotate the dust cover 2 to make it enter the locked state or the open state, avoiding the situation that the dust cover 2 is not closed due to the dust cover 2 not being moved to the right position, improving the user's experience, and avoiding shortening the service life of the door lock due to the user's mistake; at the same time, when rotating the dust cover 2, only the hand is needed for operation without the aid of tools, the operation is simple, and the adjustment process is relatively fast; in addition, the overall structure is simple, and even if the dust cover 2 is offset due to external factors, it can also automatically reset, having a shockproof feature.

[0069] The effects of the above settings are as follows: the above design can be used for bidirectional rotation of the dust cover 2, and can also be used in situations such as vertical placement and horizontal placement of the dust cover 2.

[0070] The double-V-shaped spiral curved surface 13 is arranged along the circumference of the through hole 12, when the handle 1 is placed horizontally and the double-V-shaped spiral curved surface 13 faces upwards, the first low point area 131 and the second low point area 132 are low-lying areas on the double-V-shaped spiral curved surface 13, which can be specifically referred to in the accompanying Figure 2 .

[0071] At the beginning, the elastic member 3 can have a pre-tightening force to make the dust cover 2 in a locked state.

[0072] Referring to Figure 6 In the embodiment, a limiting part 6 is further included, which is at least partially arranged in the through hole 12 and connected to the connecting member 5 to limit the connecting member 5 from being separated from the through hole 12.

[0073] Here, the connecting member 5 and the elastic member 3 are both arranged in the through hole 12, the connecting member 5 is inserted into the through hole 12 to provide a basis for the rotation of the dust cover 2, and the arrangement of the through hole 12 reduces the space required by the application. The limiting part 6 can also limit the elastic member 3, but here it is only described as limiting the connecting member 5. The limiting part is connected to the connecting member 5, and the connecting member 5 is connected to the dust cover 2, wherein at least the dust cover 2 and the connecting member 5 can move synchronously, and the limiting part can also move synchronously with the two according to specific arrangement. The limiting part 6 and the dust cover 2 can be considered as a sealing structure, which can seal the opening of the through hole 12 and also seal the connecting member 5 in the through hole 12.

[0074] Referring to Figure 6 , Figure 14 In the embodiment, a threaded hole 51 is arranged at the end of the connecting member 5 away from the dust cover 2, the limiting part 6 is arranged as a screw, and the limiting part 6 is threadedly connected to the connecting member 5.

[0075] As mentioned above, the limiting part can also move synchronously with the dust cover 2 and the connecting member 5 according to specific arrangement, and the embodiment conforms to this case, the limiting part 6 is threadedly connected to the connecting member 5, and the two can rotate together. The head of the screw is generally outside the through hole 12 and has a size larger than the opening size of the through hole 12, the screw rod can be fully inserted into the through hole 12, and the cross-sectional size of the connecting member 5 is generally smaller than the opening size of the through hole 12, and the specific size is not limited.

[0076] Referring to Figure 6 , Figure 14 In the embodiment, a gasket 7 is arranged outside the screw rod of the screw.

[0077] The gasket 7 is arranged between the head of the screw and the connecting member 5, which can reduce friction, buffer, etc., which is a conventional arrangement and will not be described in detail.

[0078] In the embodiment, the elastic member 3 is arranged as a spring structure.

[0079] The elastic member 3 can adopt different structures or objects according to actual needs, such as rubber elastic elements, etc., and in the embodiment, a spring structure is adopted, but the use of other structures or objects is not limited.

[0080] In the embodiment, the elastic member 3 is arranged as a compression spring.

[0081] The elastic member 3 in the embodiment is a compression spring, but a torsion spring or other spring structure can also be used.

[0082] Referring to Figure 2 , Figure 3 In the embodiment, the protruding member 4 includes two protrusions mounted on the dust cover 2 and abutting against the double-V-shaped spiral curved surface 13, and the two protrusions are respectively located on the two symmetrical sides of the connecting member 5.

[0083] When the dust cover 2 is in the locked state or the opened state, the two protrusions are respectively located in the first low point area 131 and the second low point area 132.

[0084] In the first direction, the first low point area 131 and the second low point area 132 are respectively located on the two sides of the through hole 12.

[0085] As mentioned above, when the dust cover 2 is in the locked state, the protruding member 4 is at least located in the first low point area 131, and if the protruding member 4 is only located in the first low point area 131, the protruding member 4 only includes a single protrusion. However, the use of two protrusions makes the movement of the dust cover 2 more stable, and of course, the use of a single protrusion is not limited.

[0086] When the dust cover 2 is in the locked state or the opened state, the two protrusions are respectively located in the first low point area 131 and the second low point area 132, and at this time, the force of the elastic member 3 is at the minimum point. When the two protrusions are away from the first low point area 131 and the second low point area 132, the force of the elastic member 3 is at least not at the minimum point.

[0087] Referring to Figure 4 In the embodiment, the side surface of the protrusion away from the dust cover 2 is a bevel or an arc surface.

[0088] The side surface of the protrusion away from the dust cover 2 can be a bevel or an arc surface. Such a setting reduces the resistance received by the protrusion during movement, facilitating the quick rotation of the dust cover 2.

[0089] Referring to Figure 2 In the embodiment, the double-V-shaped spiral curved surface 13 is composed of four curved surfaces (which can be replaced by bevels according to actual conditions), two of which are located on the two sides of the first low point area 131, and the other two are located on the two sides of the second low point area 132.

[0090] The two protrusions are respectively a near-point protrusion and a far-point protrusion. When the dust cover 2 is in the locked state, the near-point protrusion and the far-point protrusion are respectively located in the first low point area 131 and the second low point area 132. When the dust cover 2 is in the opened state, the near-point protrusion and the far-point protrusion are respectively located in the second low point area 132 and the first low point area 131.

[0091] When the near-point convex point is attached to any one of the two curved surfaces near the first low-point area 131, the near-point convex point can be moved to the first low-point area 131 under the action of the elastic member 3; when the near-point convex point is attached to any one of the two curved surfaces near the second low-point area 132, the near-point convex point can be moved to the second low-point area 132 under the action of the elastic member 3; the setting of the far-point convex point can refer to the near-point convex point.

[0092] To avoid misunderstanding, it is supplemented here that when the near-point convex point or the far-point convex point is attached to any one of the two curved surfaces near the first low-point area 131, the near-point convex point or the far-point convex point can be moved to the first low-point area 131 under the action of the elastic member 3, and the two near-point convex points in the foregoing description correspond to each other, and the two far-point convex points in the foregoing description correspond to each other.

[0093] In the locked state, of the two convex points, the one closest to the lock hole is the near-point convex point, and the other is the far-point convex point.

[0094] Also provided herein is a lock, which comprises the self-resetting dust cover assembly in any of the foregoing embodiments.

[0095] The foregoing embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A self-resetting dust cover assembly, characterized in that: it comprises a handle (1), a dust cover (2), an elastic member (3), a protruding member (4), and a connecting member (5); the handle (1) is provided with a locking hole (11), a through hole (12), and a double-V-shaped spiral surface (13); the locking hole (11) and the through hole (12) are distributed along a first direction; the double-V-shaped spiral surface (13) is arranged on the periphery of the through hole (12); the double-V-shaped spiral surface (13) has a first low point area (131) and a second low point area (132) arranged along the first direction; at least part of the connecting member (5) is inserted into the through hole (12), and the connecting member (5) is connected to the dust cover (2); at least part of the elastic member (3) is arranged in the through hole (12), one end of the elastic member (3) acts on the handle (1), and the other end of the elastic member (3) acts on the connecting member (5); the elastic member (3) has an elastic force always acting on the connecting member (5) towards the inside of the handle (1), so as to facilitate the automatic resetting of the dust cover (2); the protruding member (4) is arranged on the dust cover (2) and is attached to the double-V-shaped spiral surface (13); the self-resetting dust cover assembly has a locked state and an open state; in the locked state, the protruding member (4) is at least in the first low point area (131), and the dust cover (2) covers the opening of the locking hole (11); when the dust cover (2) is in the open state, the protruding member (4) is at least in the second low point area (132), and the dust cover (2) is away from the locking hole (11) and extends along the first direction. It further comprises a limiting part (6) arranged at least partially in the through hole (12), the limiting part (6) being connected to the connecting member (5) to limit the separation of the connecting member (5) and the through hole (12). The end of the connecting member (5) away from the dust cover (2) is provided with a threaded hole (51), the limiting part (6) is a screw, and the limiting part (6) is threadedly connected to the connecting member (5). The outer side of the screw rod of the screw is provided with a gasket (7). The elastic member (3) is arranged in a spring structure. The elastic member (3) is arranged as a compression spring. The protruding member (4) comprises two protruding points arranged on the dust cover (2) and attached to the double-V-shaped spiral surface (13), and the two protruding points are respectively on the symmetrical sides of the connecting member (5); When the dust cover (2) is in the locked state or the open state, the two protruding points are respectively in the first low point area (131) and the second low point area (132). The side surface of the protruding point away from the dust cover (2) is a bevel or an arc surface.

2. The self-resetting dirt shield cover assembly of claim 1, wherein: The double-V-shaped spiral surface (13) is composed of four curved surfaces, two of which are on the two sides of the first low point area (131), and the other two are on the two sides of the second low point area (132).

3. The self-resetting dirt shield cover assembly of claim 2, wherein: ​ 4. The self-resetting dirt shield cover assembly of claim 3, wherein: ​ 5. The self-resetting dirt shield assembly of any of claims 1-4, wherein: ​ 6. The self-resetting dirt shield cover assembly of claim 5, wherein: ​ 7. The self-resetting dirt shield assembly of any of claims 1-4, wherein: ​ ​ 8. The self-resetting dirt shield cover assembly of claim 7, wherein: ​ 9. The self-resetting dirt shield cover assembly of claim 7, wherein: ​ The two convex points are respectively near-point convex point and far-point convex point, when the dustproof cover (2) is in the locked state, the near-point convex point and the far-point convex point are respectively in the first low point area (131) and the second low point area (132); when the dustproof cover (2) is in the open state, the near-point convex point and the far-point convex point are respectively in the second low point area (132) and the first low point area (131); When the near-point convex point or the far-point convex point is attached to any one of the two curved surfaces close to the first low point area (131), under the action of the elastic piece (3), the near-point convex point or the far-point convex point can be moved to the first low point area (131); when the near-point convex point or the far-point convex point is attached to any one of the two curved surfaces close to the second low point area (132), under the action of the elastic piece (3), the near-point convex point or the far-point convex point can be moved to the second low point area (132).

10. A lock, comprising the self-resetting dustproof cover assembly of any one of claims 1-9.

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