CN220088582U - Closing cap structure, power supply unit and electronic atomizing equipment - Google Patents

Abstract

The utility model provides a sealing cover structure, a power supply device and electronic atomization equipment. The shell is provided with a containing cavity and an inlet end positioned at one end of the containing cavity, the shell is provided with a first limiting structure protruding radially, a first limiting surface extending circumferentially is arranged at the position, away from the inlet end, of the first limiting structure, and a yielding groove connected with one end of the first limiting surface is formed between the first limiting structure and the side wall of the shell; the end cover is used for being assembled at the inlet end of the shell, and the end cover radially protrudes to form a second limiting structure capable of passing through the abdication groove along the axial direction. The closing cap structure of this scheme closes and opens convenient operation swift, and user experience is better, can save material cost and processing cost, more can satisfy electronic atomizing equipment's demand.

Description

Closing cap structure, power supply unit and electronic atomizing equipment

Technical Field

The utility model belongs to the technical field of electronic atomization, and particularly relates to a sealing cover structure, a power supply device and electronic atomization equipment.

Background

An electronic atomizing device is a device that atomizes an atomizing medium to form an aerosol, and common electronic atomizing devices are either disposable or replaceable. Whether disposable or replaceable cartridge type electronic atomizing devices, most of the batteries are not detachable, and the batteries are not recycled and easily pollute air and water sources, so that the damage is extremely large.

In order to solve the problem that the battery is not easy to recycle, electronic atomization equipment with detachable battery appears on the market, the battery is generally installed from the tail part of a shell of the electronic atomization equipment, and then the battery is tightly pressed and fixed at the tail part of the shell through an end cover. Conventional end cap and housing mating means typically employ a threaded or snap-fit connection. The thread structure is limited by materials, hardware is generally adopted, the material cost and the processing cost are high, and although plastic can also be used as the thread structure, the cost of the forming die is extremely high; the buckle connection structure is very mature, like the battery cover of remote controller, but this kind of connected mode needs sufficient area just to install and dismantle, when being applied to the less electronic atomizing equipment of volume, the finger is installed and is dismantled inconveniently, and user experience feels poor.

Disclosure of Invention

The utility model aims to provide a sealing cover structure, a power supply device and electronic atomization equipment, which are low in material cost and processing cost, convenient and quick to assemble and disassemble, better in user experience and capable of meeting the requirements of the electronic atomization equipment.

In order to solve the above technical problems, the present utility model is thus implemented, providing a capping structure, including:

the shell is provided with an accommodating cavity and an inlet end positioned at one end of the accommodating cavity, the shell is provided with a first limiting structure protruding radially, a first limiting surface extending circumferentially is arranged on the first limiting structure away from the inlet end, and a yielding groove connected with one end of the first limiting surface is formed between the first limiting structure and the side wall of the shell;

the end cover is used for being assembled at the inlet end and radially protrudes to form a second limiting structure capable of axially passing through the abdication groove;

the end cover can drive the second limiting structure to move from the inlet end to one side of the first limiting surface along the yielding groove, and drive the second limiting structure to a position opposite to the first limiting surface along the circumferential rotation so as to cover the inlet end.

Further, the first limiting structure comprises an abutting part which is located at one end, far away from the yielding groove, of the first limiting surface.

Further, the first limiting structure comprises a clamping protrusion protruding out of the first limiting surface, and a limiting groove is formed between the clamping protrusion and the abutting part.

Further, the side, close to the abdication groove, of the clamping protrusion is an inclined surface, and the side, close to the abutting portion, of the clamping protrusion is a smooth curved surface.

Further, the side, away from the assembling direction of the end cover, of the second limiting structure is provided with a second limiting surface matched with the first limiting surface; the clamping protrusion circumferentially separates the first limiting surface into a first limiting section close to the abdication groove and a second limiting section positioned in the limiting groove;

in the axial direction, the minimum distance between the second limiting surface and the first limiting surface is 0-0.5mm; and/or the groove depth of the limiting groove is 0.2mm.

Further, when the end cover is tightly covered on the end face of the inlet end and the second limiting structure is located on one side of the first limiting surface, the distance between the second limiting surface and the first limiting section is 0.2-0.5mm, the distance between the second limiting surface and the clamping protrusion is 0-0.1mm, and the distance between the second limiting surface and the second limiting section is at least 0.2mm.

Further, the distance between the end part of the clamping protrusion and the first limiting section is 0.1-0.2mm.

Further, the first limiting structure comprises a limiting groove which is formed by recessing the first limiting surface and is connected with the abutting part.

Further, the opening width of the abdication groove close to the inlet end gradually expands towards the direction of the inlet end.

Further, the shell is provided with two first limiting structures which are symmetrical with each other in a central axis of the shell, and the two first limiting structures are spaced to form two symmetrical yielding grooves;

the end cover is provided with two symmetrical second limiting structures.

Further, the cover structure further comprises an elastic reset piece assembled on the inner side of the end cover and protruding towards the assembling direction of the end cover, and the elastic reset piece is used for providing elastic force for the end cover to be far away from the inlet end when the end cover is covered on the inlet end.

Further, one side of the end cover, which is away from the shell, is provided with anti-skid patterns and/or grooves for being matched with external equipment; and/or the number of the groups of groups,

the periphery of the end cover is provided with spaced convex points.

Further, one surface of the end cover, which is away from the shell, is a cambered surface which is concave towards the shell.

Further, the first limiting structure is arranged on the inner side wall of the shell, the second limiting structure is arranged on the outer side wall of the end cover, and the end cover is inserted into the inlet end of the accommodating cavity; or,

the first limit structure is arranged on the outer side wall of the shell, the second limit structure is arranged on the inner side wall of the end cover, and the end cover is sleeved on the inlet end of the shell.

Further, the shell comprises a shell with the accommodating cavity and a limiting ring connected to the shell and located at the inlet end, and the first limiting structure is arranged on the limiting ring.

Further, a bone position is arranged on the outer side of the limiting ring, the limiting ring is riveted on the inner side of the shell, and the bone position is abutted against the inner side wall of the shell; or,

the limiting ring is integrally injection-molded in the shell; or,

the stop collar is a portion of the housing at the inlet end.

Further, there is provided a power supply device including a cover structure as claimed in any one of the above, the housing being for housing a battery, the housing being provided with electrodes exposed in the housing for electrical connection with the battery.

Further, a first electrode is arranged at one end, far away from the inlet end, of the accommodating cavity, and a second electrode is arranged on the inner side wall of the accommodating cavity.

Further, there is provided an electronic atomizing apparatus including the power supply device as described above and an atomizer mounted to the housing and electrically connected to the electrode.

Compared with the prior art, the sealing cover structure, the power supply device and the electronic atomization device have the beneficial effects that:

the battery may be fitted into the housing through the receiving chamber via the inlet end. When the end cover is assembled, the end cover can be covered from the inlet end of the shell and the shell, in the covering process, the second limiting structure can pass through the abdication groove, and when the end cover is covered in place, the second limiting structure is positioned on one side, which is close to one end of the abdication groove and is away from the inlet end, of the first limiting surface, so that the end cover can be rotated to enable the second limiting structure to be overlapped with the first limiting surface in the axial direction, the second limiting structure can be abutted on the first limiting surface, the end cover and the shell cannot be loosened, and the end cover and the shell can be covered stably; when the end cover needs to be opened, the end cover is rotated to enable the second limiting structure to be opposite to the abdication groove in the axial direction, at the moment, the second limiting structure can pass through the abdication groove and cannot be blocked by the first limiting structure, and therefore the end cover can be separated from the shell to be opened. The closing cap structure of this scheme is low to electronic atomizing equipment size requirement, and the lid closes and opens convenient operation swift, and user experience is better, and the part of closing cap structure is little to the material restriction moreover, and processing is simple, can practice thrift material cost and processing cost, can more satisfy electronic atomizing equipment's application demand.

Drawings

FIG. 1 is a schematic view of an electronic atomizing apparatus according to an embodiment of the present utility model, taken along a central axis;

fig. 2 is a schematic view showing a three-dimensional exploded structure of an electronic atomizing apparatus according to an embodiment of the present utility model;

fig. 3 is a schematic exploded perspective view of a capping structure according to an embodiment of the utility model.

In the drawings, each reference numeral denotes: 10. a capping structure; 1. a limiting ring; 11. a first limit structure; 12. a relief groove; 111. a first limiting surface; 112. an abutting portion; 113. a clamping protrusion; 114. a limit groove; 1111. a first limit section; 1112. the second limiting section; 2. an end cap; 21. a second limit structure; 22. anti-skid lines; 23. a groove; 211. the second limiting surface; 3. an elastic reset piece; 20. a housing; 30. an atomizer; 401. a first electrode; 402. a second electrode; 50. and a battery.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this embodiment, in combination with fig. 1 to 3, an electronic atomizing apparatus is provided, including a power supply device and an atomizer 30, where the power supply device includes a cover structure 10, where the cover structure 1 includes a housing 20 and an end cap 2, the housing 20 has a housing cavity for housing a battery 50, the housing 20 is provided with an electrode exposed in the housing cavity for electrically connecting with the battery 50, one end of the housing cavity is an inlet end, the atomizer 30 is fixed at one end of the housing 20 far away from the inlet end and electrically connected with the electrode, and therefore, the battery 50 can be sealed by the cover structure 10 after assembled in the housing cavity and electrically connected with the atomizer 30 through the electrode to realize power supply to the atomizer 30.

The shell 20 is provided with a first limiting structure 11 protruding radially, a first limiting surface 111 extending circumferentially is arranged at the end, facing away from the inlet, of the first limiting structure 11, and a yielding groove 12 connected with one end of the first limiting surface 111 is formed between the first limiting structure 11 and the side wall of the shell 20; the end cap 2 is adapted to be fitted to the inlet end of the housing 20, the end cap 2 radially protruding to form a second limit structure 21 which is able to pass through the relief groove 12 in the axial direction. The end cover 2 can drive the second limiting structure 21 to move from the inlet end to one side of the first limiting surface 111 along the yielding groove 12, and drive the second limiting structure 21 to a position opposite to the first limiting surface 111 along the circumferential rotation so as to cover the inlet end.

The battery 50 may be fitted into the housing 20 through the receiving chamber via the inlet end. When the end cover 2 is assembled, the end cover 2 can be covered with the shell 20 from the inlet end of the shell 20, in the covering process, the second limiting structure 21 can pass through the abdication groove 12, when the end cover 2 is covered in place, the second limiting structure 21 is positioned on one side, which is close to one end of the abdication groove 12 and is away from the inlet end, of the first limiting surface 111, so that the end cover 2 can be rotated to enable the second limiting structure 21 to be overlapped with the first limiting surface 111 in the axial direction, the second limiting structure 21 can be abutted on the first limiting surface 111, the end cover 2 and the shell 20 cannot be loosened, and the covering between the end cover 2 and the shell 20 is stable; when the end cover 2 needs to be opened, the end cover 2 is rotated so that the second limiting structure 21 and the abdication groove 12 are opposite in the axial direction, at this time, the second limiting structure 21 can pass through the abdication groove 12 without being blocked by the first limiting structure 11, and therefore, the end cover 2 can be separated from the housing 20. The closing cap structure 10 of this scheme is low to electronic atomizing equipment size requirement, need not to be with the help of structures such as guide way, and dead scheduling problem of card can not appear in relative activity in-process to end cover and casing, and the lid closes and opens convenient operation swift, and user experience is better, and the part of closing cap structure 10 is little to the material restriction moreover, and processing is simple, can practice thrift material cost and processing cost, can more satisfy electronic atomizing equipment's application demand.

Further, the housing 20 includes a housing having a receiving cavity and a stop collar 1 connected to the housing and located at the inlet end, and the first stop structure 11 is disposed on the stop collar 1. The housing may serve as a holder for the battery 50, and the housing may be a single component or may be composed of a plurality of components. It will be appreciated that the stop collar 1 may be provided as a separate component or as part of some of the components of the electronic atomising device. Specifically, in this embodiment, the outside of the stop collar 1 is provided with a bone position, the stop collar 1 is riveted on the inner side of the housing, and the bone position is abutted on the inner side wall of the housing, so that the stop collar 1 and the housing are fixed and stable.

In some embodiments, the stop collar 1 may be integrally injection molded in the housing, the tail end of the housing may have a plastic portion, and the stop collar 1 may be made of a hard material such as metal or ceramic, so that the stop collar 1 may be integrally injection molded in the plastic portion of the tail end of the housing, and the connection is more stable and reliable.

In some embodiments, the stop collar 1 may be a part of the housing, that is, the stop collar 1 and the housing are made of the same material and integrally provided, for example, the stop collar 1 and the housing may be made of metal materials, the stop collar 1 and the housing may also be made of plastic materials, and may be integrally processed during processing, so that the processing steps are simplified, and the number of parts of the electronic atomization device may also be reduced when the stop collar 1 and the housing are used as one component.

Further, in this embodiment, the end of the accommodating cavity far away from the inlet end is provided with the first electrode 401, the inner side wall of the accommodating cavity is provided with the second electrode 402, and one end of the battery 50 abuts against the first electrode 401 when assembled in the accommodating cavity, in order to ensure the reliability of the abutment between the battery 50 and the first electrode 401, the cover structure 10 further includes an elastic reset member 3 assembled on the inner side of the end cover 2 and protruding towards the assembling direction of the end cover 2, and the elastic reset member 3 is used for providing an elastic force of the end cover 2 far away from the inlet end when the end cover 2 is covered on the inlet end. The elastic reset piece 3 adopts a spring, so that the elastic force provided by the spring can tightly connect the battery 50 and the first electrode 401 on one hand, and can provide extrusion force for the end cover 2 on the other hand, so that the second limiting surface 211 and the first limiting surface 111 are tightly abutted and are not easy to rotate and loosen; in addition, the elastic force provided by the elastic restoring member 3 can eject the end cap 2 when the end cap 2 is opened, without the need of pulling out the end cap 2 by an external force when the end cap 2 is rotated to the open position.

In some embodiments, the elastic restoring member 3 may also be a metal spring or a soft elastic pad, and of course, the elastic restoring member 3 may also be a spring structure integrally formed with the end cover 2.

In some embodiments, the first electrode 401 may adopt a spring structure, so that the end cover 2 may not be provided with the elastic reset member 3, when the battery 50 is assembled in the accommodating cavity, the elastic force provided by the first electrode 401 may achieve reliable connection with the battery 50, and the elastic force provided by the first electrode 401 may also provide an axially outward restoring force for the end cover 2 through the battery 50, so that the second limiting surface 211 and the first limiting surface 111 may also abut tightly, and prevent sliding between them.

Further, the first limiting structure 11 includes an abutment 112 at an end of the first limiting surface 111 away from the yielding groove 12. The abutment portion 112 is configured to block the second limiting structure 21 from moving in a direction away from the yielding groove 12, so that the end cover 2 can only rotate within a predetermined angle range in the covering process, the rotation angle can be adaptively set according to practical situations, in order to raise the degree of distinction between covering and loosening, and not to make the rotation travel unacceptable to a user, the predetermined angle range can be between 0 ° and 360 °, and as an example, the predetermined angle can be specifically 30 °, 45 °, 60 °, 90 °, 120 ° and so on.

Further, the first limiting structure 11 includes a clamping protrusion 113 protruding from the first limiting surface 111, and a limiting groove 114 is formed between the clamping protrusion 113 and the abutting portion 112; the side of the clamping convex 113 close to the abdication groove 12 is an inclined surface, and the side of the clamping convex 113 close to the abutting part 112 is a smooth curved surface. The protruding 113 of card can realize that end cover 2 opens the card sense when the lid, and user experience is better, moreover, under the elasticity effect of elasticity reset piece 3, second limit structure 21 can the joint in spacing groove 114, and protruding 113 of card can further prevent that end cover 2 from rotating not hard up.

In some embodiments, the first limiting structure 11 may not include the locking protrusion 113, and the first limiting surface 111 is directly recessed to form the limiting groove 12 connected to the abutting portion 112, so that the first limiting structure 11 may be directly locked into the limiting groove 12 when the end cap 2 is screwed in place.

Further, the side of the second limiting structure 21 facing away from the assembling direction of the end cover 2 is provided with a second limiting surface 211 matched with the first limiting surface 111; the clamping protrusion 113 separates the first limiting surface 111 into a first limiting section 1111 close to the relief groove 12 and a second limiting section 1112 located in the limiting groove 114 in the circumferential direction; the minimum distance between the second limiting surface 211 and the first limiting surface 111 is 0-0.5mm in the axial direction, so that the end cover 2 can rotate relative to the housing 20; and/or, the groove depth of the limiting groove 114 is 0.2mm, so that the second limiting structure 21 can be limited when being clamped in the limiting groove 114, and can not move rotationally to the yielding groove 12 to cause the end cover 2 to be loosened.

Further, the spacing between the end of the catch 113 and the first stop 1111 is 0.1-0.2mm. This gives the user a click feel and allows the user to more directly feel the position of the rotation of the end cap 2.

Further, the length of the first limiting section 1111 is greater than that of the second limiting section 1112, the ratio of the length of the first limiting section 1111 to the length of the second limiting section 1112 can be 1.5-3, preferably 2, and the length of the second limiting section 1112 is equal to or similar to the length of the second limiting structure 21 (the difference between 0 mm and 0.1 mm), so that the second limiting structure 21 has a longer rotating path at the first limiting section 1111 in the covering or opening process of the end cover 2, and gives a user sufficient opening or closing experience, and the second limiting structure 21 is blocked by the abutting part 112 at the second limiting section 1112, so that the user can rotate in place, and when the end cover 2 is released, the second limiting structure 21 is embedded in the limiting groove 114 under the action of the elastic reset piece 3, the end cover 2 is not easy to rotate loose, and the structure is stable and reliable.

In some embodiments, the length of the second stop 1112 may be at least 1mm greater than the length of the second stop 21, such that the second stop 21 is movable within the stop slot 114.

Further, when the end cover 2 is tightly covered on the end face of the inlet end and the second limiting structure 21 is located at one side of the first limiting surface 111, the distance between the second limiting surface 211 and the first limiting section 1111 is 0.2-0.5mm, the distance between the second limiting surface 211 and the clamping protrusion 113 is 0-0.1mm, and the distance between the second limiting surface 211 and the second limiting section 1112 is at least 0.2mm.

The overall diameter of electronic atomizing equipment is 17mm, and the external diameter of end cover 2 can be less than the external diameter of electronic atomizing equipment, if 15-17mm, when closing lid structure 10 used on electronic atomizing equipment of this kind of size, still can very convenient and fast open or the operation that closes, through the setting of size between above-mentioned first spacing face 111 and the second spacing face 211, the in-process of rotatory end cover 2, second limit structure 21 can experience relaxed sensation when first spacing section 1111, the user can experience the sensation that end cover 2 is screwed gradually when second limit structure 21 passes through card protruding 113, can break away from suddenly when second limit structure 21 reaches second spacing section 1112 and block protruding 113 and insert in spacing groove 114, the user can experience rotatory sensation in place, and user experience has been promoted.

Further, the opening width of the relief groove 12 near the inlet end is gradually widened toward the inlet end. In this way, in the process of covering the end cover 2, the second limiting structure 21 can be aligned with the opening of the yielding groove 12 more easily, and the assembly is more convenient and quick.

Further, in the embodiment, the limiting ring 1 is provided with two first limiting structures 11, the two first limiting structures 11 are symmetrical about the central axis of the limiting ring 1, and two symmetrical yielding grooves 12 are formed by the two first limiting structures 11 at intervals; the end cap 2 is provided with two symmetrical second limiting structures 21. In the process of assembling the end cover 2, the two second limiting structures 21 can respectively pass through the two abdicating grooves 12, and after the end cover 2 is rotated towards the corresponding direction, the two second limiting structures 21 can rotate into the corresponding limiting grooves 114 of the first limiting structures 11, and under the action of the elastic resetting piece 3, the two second limiting structures 21 can respectively be clamped with the corresponding limiting grooves 114, so that the structure is more balanced, and the end cover 2 and the limiting ring 1 are more reliable in the use process. It should be understood that the stop collar 1 and the end cap 2 may be provided with a first stop structure 11 and a second stop structure 21, respectively; the limiting ring 1 is respectively provided with more than three first limiting structures 11, and the end cover 2 is provided with second limiting structures 21 corresponding to the first limiting structures 11 in number and positions.

Further, the side of the end cover 2 facing away from the limit ring 1 is provided with anti-skid patterns 22 and/or grooves 23 for being matched with external equipment; and/or the peripheral side of the end cap 2 is provided with spaced bumps. The anti-skid patterns 22 can be a plurality of arc-shaped protrusions which are coaxial with the end cover 2 and are spaced, and can provide friction force when a user presses the end cover 2 and rotates, so that the end cover 2 is driven to rotate; the shape of the groove 23 can be a straight line shape, a cross shape, a regular polygon shape and the like, and a user can use a screwdriver, a wrench and other tools with corresponding shapes to be embedded in the groove 23 so as to drive the end cover 2 to rotate to open or close; the protruding points may be uniformly distributed on the peripheral side of the end cap 2, and it should be understood that the peripheral side of the end cap 2 is exposed to the outside at this time, and the protruding points may be hemispherical, cylindrical, prismatic, etc., so that a user can open or close the end cap 2 by screwing the outside of the end cap 2.

Further, one surface of the end cover 2, which is away from the limiting ring 1, is a cambered surface which is recessed towards the limiting ring 1. The setting through the cambered surface can be more inseparable with user's finger laminating on the one hand, and antiskid effect and application of force effect are better, and on the other hand end cover 2's tip can not be protruding, places electronic atomizing equipment on plane such as desktop more easily.

In this embodiment, the first limit structure 11 is disposed on the inner side wall of the limit ring 1, the second limit structure 21 is disposed on the outer side wall of the end cover 2, the end cover 2 is inserted into the inlet end of the accommodating cavity, at this time, the inner side wall of the limit ring 1 and one side of the first limit structure 11 close to the inlet end can form a caulking groove, and the end part of the end cover 2 is embedded in the caulking groove when inserted into the limit ring 1, so that the end faces of the end cover 2 and the limit ring 1 are flush, and the integrity is better. In some embodiments, the first limiting structure 11 is disposed on an outer sidewall of the limiting ring 1, the second limiting structure 21 is disposed on an inner sidewall of the end cover 2, and the end cover 2 is sleeved on an inlet end of the limiting ring 1.

In some embodiments, the features on the first limiting structure 11 and the second limiting structure 21 may be replaced with each other, that is, the original first limiting structure 11 may be disposed on the end cover 2, and the original second limiting structure 21 may be disposed on the limiting ring 1, so that the cover 2 and the limiting ring 1 can be covered and loosened.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (19)

1. A closure structure comprising:

the shell is provided with an accommodating cavity and an inlet end positioned at one end of the accommodating cavity, the shell is provided with a first limiting structure protruding radially, a first limiting surface extending circumferentially is arranged on the first limiting structure away from the inlet end, and a yielding groove connected with one end of the first limiting surface is formed between the first limiting structure and the side wall of the shell;

the end cover is used for being assembled at the inlet end and radially protrudes to form a second limiting structure capable of axially passing through the abdication groove;

the end cover can drive the second limiting structure to move from the inlet end to one side of the first limiting surface along the yielding groove, and drive the second limiting structure to a position opposite to the first limiting surface along the circumferential rotation so as to cover the inlet end.

2. The cover structure of claim 1, wherein the first limiting structure includes an abutment at an end of the first limiting surface remote from the relief groove.

3. The closure structure of claim 2, wherein the first limiting structure includes a detent projection protruding from the first limiting surface, and a limiting groove is formed between the detent projection and the abutment.

4. The cover structure according to claim 3, wherein a side of the locking protrusion, which is close to the relief groove, is an inclined surface, and a side of the locking protrusion, which is close to the abutment portion, is a smooth curved surface.

5. The closure structure in accordance with claim 3, wherein the side of the second spacing structure facing away from the assembly direction of the end cap has a second spacing surface that mates with the first spacing surface; the clamping protrusion circumferentially separates the first limiting surface into a first limiting section close to the abdication groove and a second limiting section positioned in the limiting groove;

in the axial direction, the minimum distance between the second limiting surface and the first limiting surface is 0-0.5mm; and/or the groove depth of the limiting groove is 0.2mm.

6. The closure assembly of claim 5 wherein said end cap is snugly received against said end face of said inlet end and said second spacing structure is located on one side of said first spacing surface, said second spacing surface being spaced from said first spacing section by a distance of 0.2-0.5mm, said second spacing surface being spaced from said snap tab by a distance of 0-0.1mm, and said second spacing surface being spaced from said second spacing section by a distance of at least 0.2mm.

7. The closure structure in accordance with claim 5, wherein a spacing between the end of the snap tab and the first stop segment is 0.1-0.2mm.

8. The closure structure of claim 2, wherein the first stop feature comprises a stop slot recessed from the first stop surface that interfaces with the abutment.

9. The closure structure of claim 1, wherein the relief groove tapers in width toward the inlet end in a direction toward the inlet end.

10. The cover structure according to claim 9, wherein the housing is provided with two first limiting structures, the two first limiting structures are symmetrical about a central axis of the housing, and the two first limiting structures are spaced apart to form two symmetrical relief grooves;

the end cover is provided with two symmetrical second limiting structures.

11. The closure structure of claim 1, further comprising a resilient return member mounted to an inner side of the end cap and protruding in a mounting direction of the end cap, the resilient return member for providing a resilient force of the end cap away from the inlet end when the end cap is positioned over the inlet end.

12. The cover structure according to claim 1, wherein the side of the end cap facing away from the housing is provided with anti-slip threads and/or grooves for cooperation with external equipment; and/or the number of the groups of groups,

the periphery of the end cover is provided with spaced convex points.

13. The closure structure in accordance with claim 12, wherein a face of the end cap facing away from the housing is a cambered surface recessed toward the housing.

14. The cover structure according to claim 1, wherein the first limiting structure is disposed on an inner side wall of the housing, the second limiting structure is disposed on an outer side wall of the end cover, and the end cover is inserted into an inlet end of the accommodating cavity; or,

the first limit structure is arranged on the outer side wall of the shell, the second limit structure is arranged on the inner side wall of the end cover, and the end cover is sleeved on the inlet end of the shell.

15. The closure structure in accordance with any one of claims 1-14, wherein the housing includes a shell having the receiving cavity and a stop collar coupled to the shell and located at the inlet end, the first stop structure being disposed on the stop collar.

16. The closure structure of claim 15, wherein a bone site is disposed on the outside of the stop collar, the stop collar is riveted to the inside of the housing, and the bone site abuts against the inside wall of the housing; or,

the limiting ring is integrally injection-molded in the shell; or,

the stop collar is a portion of the housing at the inlet end.

17. A power supply device comprising a cover structure as claimed in any one of claims 1 to 16, the housing being adapted to receive a battery, the housing being provided with electrodes exposed in the housing for electrical connection with the battery.

18. The power supply device according to claim 17, wherein the end of the housing chamber remote from the inlet end is provided with a first electrode and the inner side wall of the housing chamber is provided with a second electrode.

19. An electronic atomizing apparatus comprising the power supply set forth in claim 17 and an atomizer mounted to said housing and electrically connected to said electrodes.