CN212100373U

CN212100373U - Garbage can

Info

Publication number: CN212100373U
Application number: CN202020178070.7U
Authority: CN
Inventors: 石天剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-12-08
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a garbage can, include: a cylinder, a first frame, a second frame and a cover. The cylinder body comprises a port and an inner space which are communicated; the first frame body is arranged on the cylinder body and comprises a first connecting unit and a first through hole which is surrounded by the first connecting unit, the first through hole is communicated with the port, and the opening direction of the first through hole is the same as that of the port; the second frame body comprises a second connecting unit and a second port, the second connecting unit is connected with the first connecting unit through the second frame body to be detachably connected with the first frame body, the second port is communicated with the first port, and the opening direction of the second port is the same as that of the port; the cover body is pivoted to the second frame body and can selectively shield at least part of the second through opening.

Description

Garbage can

Technical Field

The utility model relates to a garbage can.

Background

The trash can has the advantage that unnecessary objects, trash and the like can be collected together, so that the objects can be simultaneously processed and discarded after being accumulated to a certain amount. The common garbage can types can be generally divided into two types, namely a garbage can with a cover body and a garbage can without a cover body, wherein the garbage can without a cover body is very convenient for a user to quickly throw garbage due to an open type barrel body, and the hand can be effectively kept clean; the trash can with the cover has the advantage that the trash can be isolated from the outside.

However, the trash can with the cover has a connecting pivot mechanism between the cover and the can, so that the cover cannot be smoothly applied to other trash cans without a cover, and once the usage habit of the user changes or the trash can is changed, the user often needs to purchase another type of trash can, which is disadvantageous in need of improvement.

Therefore, there is a need for a new and improved trash can to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a garbage can let the user come from the accessory of line change garbage can according to use custom, use occasion to satisfy the user demand.

To achieve the above object, the present invention provides a garbage can, including: a cylinder, a first frame, a second frame and a cover. The cylinder body comprises a port and an inner space which are communicated with each other; the first frame body is arranged on the cylinder body and comprises a first connecting unit and a first through hole which is surrounded by the first connecting unit, the first through hole is communicated with the port, and the opening direction of the first through hole is the same as that of the port; the second frame body comprises a second connecting unit and a second port, the second connecting unit is connected with the first connecting unit through the second frame body to be detachably connected with the first frame body, the second port is communicated with the first port, and the opening direction of the second port is the same as that of the port; the cover body is pivoted to the second frame body and can selectively shield at least part of the second through opening.

The second connecting unit is a plurality of hooks hooked on the first connecting unit so as to connect the second frame body with the first frame body.

The first frame body comprises a first top portion and a first surrounding portion, the first top portion is transversely connected with the first surrounding portion and used for supporting the second frame body, the first surrounding portion surrounds the first through hole, and the hook members penetrate through the first through hole and then laterally hook and abut against the first surrounding portion.

The second frame body comprises a second top part and a second surrounding part, the second top part is transversely connected with the second surrounding part, the second surrounding part surrounds the second through hole, and the plurality of hook parts are arranged on the second surrounding part; when the second frame body is connected with the first frame body, the second top part is pressed against the first top part, the second surrounding part extends into the first through hole, and then the second surrounding part and the first surrounding part are in interference blocking relation in the direction vertical to the opening of the port.

The cylinder further comprises a center line, the first top part comprises a first inclined section which extends and is close to the center line towards the port, the second top part comprises a second inclined section which extends and is close to the center line towards the port; when the second frame body is connected with the first frame body, the second inclined section presses against the first inclined section.

The hook pieces integrally extend to the second surrounding part, the second surrounding part and the first surrounding part are abutted against each other in the side direction, and the length of the second surrounding part is at least half of that of the first surrounding part in the opening direction of the port.

The cover body is provided with a throw-in opening in the same direction as the opening of the port, the area of the throw-in opening is smaller than half of the area of the second through opening, and a shielding plate is detachably combined with the cover body and embedded into the throw-in opening, so that the shielding plate shields the throw-in opening.

The garbage can further comprises at least one hanging unit, the at least one hanging unit comprises a positioning assembly and a hanging piece, the positioning assembly is arranged on one side, back to the second frame body, of the first frame body, the hanging piece is detachably connected with the positioning assembly and is suspended in the inner space, and the hanging piece is combined with a deodorizing unit.

The cover body and the second frame body are the same in color, and the color of the second frame body is different from that of the first frame body.

The hook pieces integrally extend to the second surrounding part, the second surrounding part and the first surrounding part are abutted against each other in the side direction, and the length of the second surrounding part is at least half of that of the first surrounding part in the opening direction of the port; the cover body is provided with a throw-in opening in the same direction as the opening of the port, the area of the throw-in opening is smaller than half of the area of the second through opening, and a shielding plate is detachably combined with the cover body and embedded into the throw-in opening, so that the shielding plate shields the throw-in opening; the garbage can further comprises two hanging units, each hanging unit comprises a positioning component and a hanging piece, the positioning component is arranged on one side, back to the second frame body, of the first frame body, the hanging piece is detachably connected with the positioning component and is suspended in the inner space, and the hanging piece is combined with a deodorization unit; the cover body and the second frame body have the same color, and the color of the second frame body is different from that of the first frame body; the first frame body further comprises a first bottom and a first lip, the first bottom is transversely connected with the first surrounding part, the hook members penetrate through the first through opening and then are hooked to the part of the first bottom, the first connecting unit comprises the part of the first surrounding part and the part of the first bottom, the first lip transversely protrudes out of the first bottom to form a sleeving part together, the sleeving part is used for sleeving the cylinder body, and the first bottom is pressed against the end face of the cylinder body; the positioning component and the first lip are arranged at intervals, and one end of the cylinder is inserted between the positioning component and the first lip; the positioning assembly comprises two positioning slide rails, the two positioning slide rails are detachably screwed on the first bottom, and the hanging piece is detachably connected with the two positioning slide rails in a sliding manner; in the direction of the central line, the ratio of the length of each hook part to the length of the second surrounding part is between 0.8 and 1; the included angle between the first inclined section and the central line is between 60 and 70 degrees; the hook pieces are four in number and are symmetrically arranged on the second frame body; the first top further comprises a first flat section connected to the end of the first inclined section away from the port of the cylinder, the second top further comprises a second flat section connected to the end of the second inclined section away from the port of the cylinder, the first and second flat sections are perpendicular to the center line, and when the second frame is connected to the first frame, the second flat section presses against the first flat section; the second frame further comprises a second lip part, the second lip part protrudes from the second top part to form an accommodating part together, the cover body is pivoted to the second lip part, and when the cover body covers at least part of the second through hole, the cover body is accommodated in the accommodating part; a plurality of reinforcing ribs are arranged on the cover body; the cover body is convexly provided with a clamping part, the second frame body further comprises a plug-in port and a blocking part, the blocking part is movably and transversely arranged on the plug-in port, when the clamping part is inserted into the plug-in port, the blocking part is positioned above the clamping part in an interference manner, so that the cover body cannot pivot to keep shielding the second through port, and when the blocking part is used for external control movement and leaves the position above the clamping part, the cover body can freely pivot to open and close; at least one elastic piece is elastically propped between the cover body and the second frame body, so that the cover body has the tendency of swinging towards the direction away from the second through hole; the second inclined section completely covers the first inclined section; in the direction perpendicular to the center line, the part of the first surrounding part, which is not abutted against the second surrounding part, is far away from the center line; the cover body, the first frame body and the second frame body are made of plastics, and the cylinder body is made of metal; the color of the second frame body is selected from blue, green, yellow and red.

The utility model has the advantages that: the utility model discloses a garbage can locates the second framework with the lid pivot to connect first framework through second framework detachably, and, the lid runs through and is equipped with the input mouth, and a sunshade detachably imbeds the input mouth, via above-mentioned structure, gives the garbage can have diversified usage pattern, and can change the use thereupon along with service environment, use habit's change. In addition, no matter what kind of use state, the original first frame body and the original cylinder body can be continuously used, and the cover body and the second frame body can change corresponding colors along with different preset recovery objects, so that the identification effect of environmental recovery is achieved.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of the cover and the shielding plate according to an embodiment of the present invention.

Fig. 3 is an elevational sectional view of fig. 1.

Fig. 4 is a side sectional view of fig. 1.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6 is a perspective view of the cover opened.

Fig. 7 is a perspective view with the barrel removed.

Fig. 8 is an exploded view of fig. 7.

Fig. 9 is an exploded view from another perspective of fig. 7.

Figure 10 is an exploded view of the hanger unit.

Fig. 11 is a bottom view of the second frame body.

Fig. 12 is a side view of the second frame body.

Fig. 13 is a side view of the second frame body in another direction.

1, a cylinder body; 11: a port; 12, an inner space; 13, a central line; 2, a first frame body; 21, a first connecting unit; 22, a first through opening; 23: a first top; 231 a first inclined section; 232, a first flat section; 24, a first surrounding part; 25: a first bottom; 26: a first lip; 27, a sleeve joint part; 3, a second frame body; 31, a second connecting unit; 311, hook elements; 32, a second port; 33: a second top; 331 a second flat section; 332 a second inclined section; 34, a second surrounding part; 35, a second lip; 36, a receptacle; 37, a plug interface; 38, a blocking part; 4, a cover body; 41, a throwing port; 42, reinforcing ribs; 43, a clamping part; 5, a shielding plate; 6, hanging unit; 61, a positioning component; 611, positioning the slide rail; 62, a hanging part; 63, a deodorization unit; and 7, an elastic piece.

Detailed Description

The following description is given by way of example only, and not by way of limitation, of the scope of the invention.

Referring to fig. 1 to 13, an embodiment of the present invention is shown, in which the garbage can includes a can body 1, a first frame body 2, a second frame body 3 and a cover body 4.

The cylinder 1 comprises a port 11 and an inner space 12 which are communicated with each other; the first frame 2 is disposed on the cylinder 1, the first frame 2 includes a first connecting unit 21 and encloses a first through opening 22, the first through opening 22 is communicated with the port 11, and the opening direction of the first through opening 22 is the same as the opening direction of the port 11; the second frame 3 includes a second connecting unit 31 and encloses a second opening 32, the second frame 3 is detachably connected to the first frame 2 by the second connecting unit 31 connecting the first connecting unit 21, the second opening 32 is communicated with the first opening 22, and the opening direction of the second opening 32 is the same as the opening direction of the opening 11; the cover 4 is pivotally connected to the second frame 3 to selectively cover at least a portion of the second opening 32, and a plurality of ribs 42 are preferably disposed on the cover 4 to enhance the structural strength.

According to the use requirement and environmental consideration, the garbage can be quickly changed into a use mode with a cover or without the cover by removing or installing the second frame body 3; in any type, the first frame 2 does not need to be detached from the cylinder 1, and the first frame 2 can keep the rim of the port 11 of the cylinder 1 framed, thereby protecting the structural integrity of the rim of the port 11, so that the rim of the port 11 is not deformed by the impact of an improper garbage disposal angle. In addition, the first frame 2 can more reliably cover the rough edge and sharp portion of the port 11 caused by improper processing, thereby protecting the user from being cut. In addition, the first frame 2 can also clamp and position the garbage bag in the barrel 1, so that the garbage bag cannot slip off the barrel 1 due to a heavy object.

In this embodiment, the cylinder 1 is made of metal, so as to have a sturdy and durable structure; the cover 4, the first frame 2 and the second frame 3 are made of plastic, so as to have comfortable and smooth hand feeling and have the advantage of rapid production.

More specifically, the cover 4 protrudes with a locking portion 43, the second frame 3 further includes a plug port 37 and a blocking portion 38, the blocking portion 38 is movably disposed across the plug port 37, when the locking portion 43 is inserted into the plug port 37, the blocking portion 38 is disposed above the locking portion 43 in an interfering manner, so that the cover 4 cannot pivot to keep shielding the second through port 32, thereby effectively avoiding the occurrence of an erroneous opening; when the stopping portion 38 is moved away from the upper side of the engaging portion 43 for external operation, the cover 4 can be freely pivoted to open and close. In this embodiment, at least one elastic element 7 is elastically abutted between the cover 4 and the second frame 3, so that the cover 4 tends to swing away from the second opening 32, and when the blocking portion 38 is pressed away from the upper side of the locking portion 43, the cover 4 is automatically lifted, thereby facilitating the disposal of garbage.

More specifically, the cover 4 is provided with an inlet 41, the opening direction of the inlet 41 is the same as the opening direction of the port 11, the area of the inlet 41 is smaller than half of the area of the second opening 32, a shielding plate 5 is detachably coupled to the cover 4 and is embedded in the inlet 41, and the shielding plate 5 shields the inlet 41. The above-mentioned configuration provides another usage mode for the user to choose, i.e. remove the shielding plate 5, so that the input port 41 is normally exposed, in this mode, the user can quickly dispose the garbage through the input port 41 without lifting the cover 4, and the small area of the input port 41 can ensure that the animals are hard to turn the garbage, and the garbage in the inner space 12 is less likely to fall to the outside due to unexpected factors (such as wind blowing).

Preferably, the cover 4 and the second frame 3 have the same color, and the color of the second frame 3 is different from the color of the first frame 2, for example but not limited to, the color of the second frame 3 is selected from blue, green, yellow, and red, and has the purpose of environmental recycling identification, such as: blue represents recycled paper, green represents recycled glass, yellow represents recycled metal, and red represents recycled plastic; of course, the user may also match colors according to the color of the surrounding environment.

From the above, it is fully understood that various changes in form and practical applications of the garbage can will be made, and the structure of the assembly will be explained in detail. Specifically, the second connecting unit 31 is a plurality of hook members 311, the hook members 311 are hooked on the first connecting unit 21, so that the second frame 3 is connected to the first frame 2, and the hooking connection is quite favorable for quick connection and separation; in the present embodiment, the hook members 311 are four in number and symmetrically disposed on the second frame 3, so as to evenly and smoothly hook and connect the first frame 2.

The first frame 2 includes a first top portion 23 and a first surrounding portion 24, the first top portion 23 is transversely connected to the first surrounding portion 24, the first top portion 23 is used for supporting the second frame 3, the first surrounding portion 24 surrounds the first through opening 22, and the plurality of hook members 311 are disposed through the first through opening 22 and then laterally hooked against the first surrounding portion 24. The existing first through hole 22 is used as the through space for the hook members 311, so that the structural continuity of the first frame 2 can be ensured without additionally providing through holes, and the first frame 2 can also protect the hook members 311 located at the inner side from being collided by foreign objects.

The second frame 3 comprises a second top portion 33 and a second surrounding portion 34, the second top portion 33 is transversely connected to the second surrounding portion 34, the second surrounding portion 34 surrounds the second opening 32, and the hook members 311 are disposed on the second surrounding portion 34; when the second frame 3 is connected to the first frame 2, the second top portion 33 presses against the first top portion 23, the second surrounding portion 34 extends into the first opening 22, and the second surrounding portion 34 and the first surrounding portion 24 are in an interference blocking relationship in a direction perpendicular to the opening direction of the port 11, so that when a collision occurs, the first surrounding portion 24 can limit and block the second surrounding portion 34, and the second frame 3 is effectively prevented from being displaced and separated from the first frame 2.

In this embodiment, the second surrounding portion 34 and the first surrounding portion 24 are laterally abutted against each other, so that the first surrounding portion 24 can securely restrain the second surrounding portion 34, and the first frame 2 and the second frame 3 have better bonding tightness; in addition, in the opening direction of the port 11, the length of the second surrounding portion 34 is preferably at least half of the length of the first surrounding portion 24, so that the two have sufficient contact area, and the first surrounding portion 24 can provide more and more uniform supporting force to the second surrounding portion 34.

The cylinder 1 further includes a central line 13, the first top 23 includes a first inclined section 231, the first inclined section 231 extends toward the port 11 and is close to the central line 13, the second top 33 includes a second inclined section 332, the second inclined section 332 extends toward the port 11 and is close to the central line 13, the first inclined section 231 and the second inclined section 332 are configured to help guide the garbage into the inner space 12, so that the garbage does not accumulate on the first frame 2 or the second frame 3; when the second frame 3 is connected to the first frame 2, the second inclined section 332 presses against the first inclined section 231. In this embodiment, after the second frame 3 is combined with the first frame 2, the second inclined section 332 completely covers the first inclined section 231 to prevent the dirt from being stuck in the gap therebetween; moreover, the included angle between the first inclined section 231 and the central line 13 is preferably between 60 degrees and 70 degrees, so as to have the effect of better actuating the garbage located above to slide and roll.

The first top portion 23 further includes a first flat portion 232, the first flat portion 232 is connected to an end of the first inclined portion 231 away from the port 11 of the cylinder 1, the second top portion 33 further includes a second flat portion 331, the second flat portion 331 is connected to an end of the second inclined portion 332 away from the port 11 of the cylinder 1, the first flat portion 232 and the second flat portion 331 are perpendicular to the center line 13, when the second frame 3 is connected to the first frame 2, the second flat portion 331 presses against the first flat portion 232, which not only increases a contact area between the first frame 2 and the second frame 3, but also effectively resists an external force along the center line 13.

It should be noted that the hook members 311 preferably extend integrally with the second surrounding portion 34, so as to simplify the assembly and provide better connection. Preferably, the portion of the first surrounding portion 24 not abutting against the second surrounding portion 34 is further away from the central line 13 in a direction perpendicular to the central line 13, so that the hook members 311 can have a larger structural size or can have a larger space. Preferably, the ratio of the length of each hook element 311 to the length of the second surrounding portion 34 in the direction of the center line 13 is between 0.8 and 1, so that the hooking range and the contact area are more uniformly distributed.

The first frame 2 further includes a first bottom 25 and a first lip 26, the first bottom 25 is transversely connected to the first surrounding portion 24, the hook members 311 are inserted through the first through hole 22 and then hooked to a portion of the first bottom 25, in other words, in this embodiment, the first connecting unit 21 includes a portion of the first surrounding portion 24 and a portion of the first bottom 25. Specifically, the first lip 26 transversely protrudes from the first bottom 25 to form a sleeve 27, the sleeve 27 is sleeved on the cylinder 1, and the first bottom 25 presses against the end surface of the cylinder 1, so as to increase the stability of the first frame 2 framed on the cylinder 1. More specifically, the second frame 3 further includes a second lip 35, the second lip 35 protrudes from the second top 33 to form a containing portion 36, the cover 4 is pivotally connected to the second lip 35, and when the cover 4 covers at least a portion of the second opening 32, the cover 4 is contained in the containing portion 36, so as to prevent the cover 4 from being collided alone.

The garbage can further comprises at least one hanging unit 6, the at least one hanging unit 6 comprises a positioning component 61 and a hanging piece 62, the positioning component 61 is arranged on one side of the first frame body 2, which is back to the second frame body 3, the hanging piece 62 is detachably connected with the positioning component 61 and is suspended in the inner space 12, and the hanging piece 62 is combined with a deodorization unit 63 to effectively eliminate bad smell in the inner space 12.

In this embodiment, the positioning element 61 and the first lip 26 are disposed at an interval, and one end of the cylinder 1 is inserted between the positioning element 61 and the first lip 26. Specifically, the positioning assembly 61 includes two positioning rails 611, and the two positioning rails 611 are detachably screwed to the first bottom 25, so as to be conveniently added, removed or moved according to different sizes of the hanging member 62; the hanging member 62 is detachably slidably connected to the two positioning rails 611, so as to facilitate replacement of the deodorizing unit 63.

To sum up, the utility model discloses a garbage can locates the lid pivot in the second framework to connect first framework through second framework detachably, and, the lid runs through and is equipped with the input mouth, and a sunshade detachably imbeds the input mouth, via above-mentioned structure, gives the garbage bin has diversified user mode appearance, and can change the use thereupon along with service environment, use custom's change. In addition, no matter what kind of use state, the original first frame body and the original cylinder body can be continuously used, and the cover body and the second frame body can change corresponding colors along with different preset recovery objects, so that the identification effect of environmental recovery is achieved.

Claims

1. A trash can, characterized in that: the method comprises the following steps:

a cylinder body, which comprises a port and an inner space;

the first frame body is arranged on the cylinder body and comprises a first connecting unit and a first through hole which is surrounded by the first connecting unit, the first through hole is communicated with the port, and the opening direction of the first through hole is the same as that of the port;

a second frame body which comprises a second connecting unit and is surrounded with a second port, the second frame body is detachably connected with the first frame body by the second connecting unit being connected with the first connecting unit, the second port is communicated with the first port, and the opening direction of the second port is the same as that of the port;

a cover body pivoted to the second frame body and capable of selectively shielding at least part of the second through opening.

2. The trash can of claim 1, wherein: the second connecting unit is a plurality of hooks hooked on the first connecting unit so as to connect the second frame body with the first frame body.

3. The trash can of claim 2, wherein: the first frame body comprises a first top portion and a first surrounding portion, the first top portion is transversely connected with the first surrounding portion and used for supporting the second frame body, the first surrounding portion surrounds the first through hole, and the hook members penetrate through the first through hole and then laterally hook and abut against the first surrounding portion.

4. The trash can of claim 3, wherein: the second frame body comprises a second top part and a second surrounding part, the second top part is transversely connected with the second surrounding part, the second surrounding part surrounds the second through hole, and the plurality of hook parts are arranged on the second surrounding part; when the second frame body is connected with the first frame body, the second top part is pressed against the first top part, the second surrounding part extends into the first through hole, and then the second surrounding part and the first surrounding part are in interference blocking relation in the direction vertical to the opening of the port.

5. The trash can of claim 4, wherein: the cylinder further comprises a center line, the first top part comprises a first inclined section which extends and is close to the center line towards the port, the second top part comprises a second inclined section which extends and is close to the center line towards the port; when the second frame body is connected with the first frame body, the second inclined section presses against the first inclined section.

6. The trash can of claim 4, wherein: the hook pieces integrally extend to the second surrounding part, the second surrounding part and the first surrounding part are abutted against each other in the side direction, and the length of the second surrounding part is at least half of that of the first surrounding part in the opening direction of the port.

7. The trash can of claim 1, wherein: the cover body is provided with a throw-in opening in the same direction as the opening of the port, the area of the throw-in opening is smaller than half of the area of the second through opening, and a shielding plate is detachably combined with the cover body and embedded into the throw-in opening, so that the shielding plate shields the throw-in opening.

8. The trash can of claim 1, wherein: the first frame body is provided with a first inner space, the second frame body is provided with a second inner space, the first inner space is provided with a first hanging unit, the second inner space is provided with a second hanging unit, the first hanging unit is provided with a positioning assembly, the second hanging unit is provided with a hanging piece, the positioning assembly is arranged on one side, back to the second frame body, of the first frame body, the hanging piece is detachably connected with the positioning assembly and is hung in the inner space, and.

9. The trash can of any one of claims 1-8, wherein: the cover body and the second frame body are the same in color, and the color of the second frame body is different from that of the first frame body.

10. The trash can of claim 5, wherein: the hook pieces integrally extend to the second surrounding part, the second surrounding part and the first surrounding part are abutted against each other in the side direction, and the length of the second surrounding part is at least half of that of the first surrounding part in the opening direction of the port; the cover body is provided with a throw-in opening in the same direction as the opening of the port, the area of the throw-in opening is smaller than half of the area of the second through opening, and a shielding plate is detachably combined with the cover body and embedded into the throw-in opening, so that the shielding plate shields the throw-in opening; the garbage can further comprises two hanging units, each hanging unit comprises a positioning component and a hanging piece, the positioning component is arranged on one side, back to the second frame body, of the first frame body, the hanging piece is detachably connected with the positioning component and is suspended in the inner space, and the hanging piece is combined with a deodorization unit; the cover body and the second frame body have the same color, and the color of the second frame body is different from that of the first frame body; the first frame body further comprises a first bottom and a first lip, the first bottom is transversely connected with the first surrounding part, the hook members penetrate through the first through opening and then are hooked to the part of the first bottom, the first connecting unit comprises the part of the first surrounding part and the part of the first bottom, the first lip transversely protrudes out of the first bottom to form a sleeving part together, the sleeving part is used for sleeving the cylinder body, and the first bottom is pressed against the end face of the cylinder body; the positioning component and the first lip are arranged at intervals, and one end of the cylinder is inserted between the positioning component and the first lip; the positioning assembly comprises two positioning slide rails, the two positioning slide rails are detachably screwed on the first bottom, and the hanging piece is detachably connected with the two positioning slide rails in a sliding manner; in the direction of the central line, the ratio of the length of each hook part to the length of the second surrounding part is between 0.8 and 1; the included angle between the first inclined section and the central line is between 60 and 70 degrees; the hook pieces are four in number and are symmetrically arranged on the second frame body; the first top further comprises a first flat section connected to the end of the first inclined section away from the port of the cylinder, the second top further comprises a second flat section connected to the end of the second inclined section away from the port of the cylinder, the first and second flat sections are perpendicular to the center line, and when the second frame is connected to the first frame, the second flat section presses against the first flat section; the second frame further comprises a second lip part, the second lip part protrudes from the second top part to form an accommodating part together, the cover body is pivoted to the second lip part, and when the cover body covers at least part of the second through hole, the cover body is accommodated in the accommodating part; a plurality of reinforcing ribs are arranged on the cover body; the cover body is convexly provided with a clamping part, the second frame body further comprises a plug-in port and a blocking part, the blocking part is movably and transversely arranged on the plug-in port, when the clamping part is inserted into the plug-in port, the blocking part is positioned above the clamping part in an interference manner, so that the cover body cannot pivot to keep shielding the second through port, and when the blocking part is used for external control movement and leaves the position above the clamping part, the cover body can freely pivot to open and close; at least one elastic piece is elastically propped between the cover body and the second frame body, so that the cover body has the tendency of swinging towards the direction away from the second through hole; the second inclined section completely covers the first inclined section; in the direction perpendicular to the center line, the part of the first surrounding part, which is not abutted against the second surrounding part, is far away from the center line; the cover body, the first frame body and the second frame body are made of plastics, and the cylinder body is made of metal; the color of the second frame body is selected from blue, green, yellow and red.