CN208994215U

CN208994215U - Handle and the first tank

Info

Publication number: CN208994215U
Application number: CN201820377717.1U
Authority: CN
Inventors: C.P.拉姆齐
Original assignee: Crown Cork and Seal Technologies Corp
Current assignee: Crown Packaging Technology Inc
Priority date: 2018-02-05
Filing date: 2018-03-20
Publication date: 2019-06-18
Anticipated expiration: 2028-03-20
Also published as: US20210047079A1; WO2019152053A1; EP3749584A1; CN110116860B; CN110116860A; SG11202006776XA

Abstract

The utility model relates to handles and the first tank.Handle includes band, the first protruding part and the second protruding part.Band has first end and opposite second end.First protruding part is positioned at the first end of band and has the first boss upwardly extended in first boss side.Second protruding part is positioned at the second end of band and has the second boss upwardly extended in second boss side.First protruding part and the second protruding part are configured to couple to the first tank, so that when the first tank is nested in the second tank, on the top for the upper contact surface that first boss and second boss are located at the second tank, so that first boss direction and second boss direction are arranged essentially parallel to contact surface.

Description

Handle and the first tank

Technical field

The utility model relates to handles and the first tank.

Background technique

For such as paint industry and household products bucket usually when sky can one be nested in another.Make bucket Nesting helps to stack, store and transport.

For can a kind of construction of nested bucket include the outwardly projecting stacking flange (bead) of side wall from bucket.When bucket is embedding When being set in another bucket being disposed below, the upper surface of bucket under Hp contacts is stacked, this controls each bucket and is nested into pair Answer in bucket how far.Stacking flange helps to minimize the space requirement for being nested bucket and helps to reduce what bucket was snapped together Possibility.Additional formation operation is needed however, being formed and stacking flange, this cannot be formed during expansion process.Equally, exist Contact between flange and the upper surface of lower bucket can result in the scuffing on flange, this can result in erosion, and because convex Edge is usually located at the center of the side wall of bucket, so the appearance of bucket is likely to be broken, such as the brand mark before bucket.

For can another construction of nested bucket include being laminated to piled barrels in another bucket being disposed below so that in upper bucket Handle ear on the outer surface of side wall contacts the upper surface of lower bucket.In general, handle ear is cylindrical, so that from embedding The axial load for covering bucket damages the upper surface of lower bucket, such as paints, and can result in and form two or more on an upper Dent.This can due to coating damage and cause corrode and can due to formed dent upper surface profile mismatch pair The lid answered and the loss for leading to sealing.

Utility model content

Describe it is a kind of for being connected to the handle of bucket, so as to improve by a bucket nest into another barrel neutralize by one Bucket releases nested from another bucket.Handle includes the protruding part (boss component) on both ends, is configured to It is connected to the corresponding handle ear of bucket.Each protruding part includes the boss (ledge) of at least one substantially flat, by structure It causes to be located on the top for the crimping (curl) for receiving the bucket for being nested bucket.In order to enable being nested bucket releases nested, handle quilt It is configured to rotate around handle ear, it will be by so as to cause the power on the top for receiving the crimping of bucket is applied to due to protruding part Nested bucket lift-off receives bucket (such as positive releasing is nested (positive de-nesting)).The positive nesting that releases is useful, because Bucket is typically due to be crowded together in the excessive axial load during transport or the dent in main wall.Handle provides lever Mechanism；Distance from the hoist point on handle to axis is about 140mm, and the distance of cam point to the axis from protrusion is About 10mm, this generates the lever ratios of about 14:1, so that its stacking for more easily releasing bucket.Positive releasing nesting Further advantage is that not needing nesting/stacking flange on the side wall of bucket.

Disclosed herein is a kind of for being connected to the handle of bucket.Handle includes band, the first protruding part and the second protrusion Component.Band has first end and opposite second end.First protruding part is positioned at the first end of band, and is had In the first boss that first boss side upwardly extends.Second protruding part is positioned at the second end of band, and is had The second boss that second boss side upwardly extends.First protruding part and the second protruding part are configured to couple to the first tank, So that first boss and second boss are configured to the upper contact table positioned at the second tank when the first tank is nested in the second tank On the top in face, so that first boss direction and second boss direction are arranged essentially parallel to contact surface.

Another aspect of the present disclosure provides a kind of method that first tank is nested into the second tank.This method comprises: will First tank is located in second tank, and first tank includes handle, which has the first protruding part and second Protruding part, first protruding part have the first boss upwardly extended in first boss side, second protruding part With the second boss upwardly extended in second boss side；And make the first boss and the second boss and described the The upper contact surface of two tanks is aligned, so that the first boss direction and the second boss direction are arranged essentially parallel on described Contact surface.

Another aspect of the present disclosure provides a kind of for the first tank to be released nested method from the second tank.This method packet It includes: so that the handle for being coupled to first tank rotates to the second position from first position.First tank includes handle, should Handle has the first protruding part and the second protruding part.First protruding part has to be upwardly extended in first boss side First boss, and second protruding part has the second boss upwardly extended in second boss side.In the handle The first position, the first boss and the second boss are located on the top of the upper contact surface of second tank, with The first boss direction and the second boss direction is caused to be arranged essentially parallel to the upper contact surface, and first tank It is positioned in second tank with the first depth.In the second position of the handle, the first boss and described Two boss contact the upper contact surface of second tank, thus the first boss direction and the second boss direction from The angled offset of the upper contact surface, and first tank is positioned in second tank with the second depth.Described One depth is greater than second depth.

The utility model content is provided for introducing the selection to design, by quilt in specific embodiment below It further describes.The utility model content is not intended to the key feature or essential characteristics for confirming theme claimed, It is not intended to limit the range of theme claimed.In addition, theme claimed is not limited to solve in the disclosure Any or whole disadvantage pointed out in arbitrary portion.

Detailed description of the invention

It can be understood in more detail from the description below by way of example in conjunction with attached drawing, in which:

Fig. 1 shows the front view of bucket according to the one side of the disclosure.

Fig. 2 shows the perspectives of the bucket shown in Fig. 1 with the handle being coupled according to the one side of the disclosure Figure.

Fig. 3 and Fig. 4 is respectively illustrated according to all aspects of this disclosure in not curved configuration and the handle not engaged with bucket The front view and rearview of hand.

Fig. 5 and Fig. 6 respectively illustrates the rear perspective view and front perspective view of the protruding part of handle shown in Fig. 3 and Fig. 4.

Fig. 7 shows the rearview of the protruding part of handle shown in Fig. 3 and Fig. 4.

Fig. 8 shows the alternative aspect of protruding part according to the one side of the disclosure.

Fig. 9-11 shows the multiple buckets being nested in one another according to the one side of the disclosure.

Figure 12 shows the perspective view for being nested in one another multiple barrels according to the one side of the disclosure.

Figure 13 shows being nested in one another with the handle in joint construction according to the one side of the disclosure Multiple barrels of side view.

Specific embodiment

Fig. 1 shows the front view of bucket 100 according to the one side of the disclosure.Bucket 100 may include tank, bucket or be used for Other containers of industry and household products.Bucket 100 includes side wall 102, base portion 104, crimping 106, first in command ear 108 and the Second chief ear 110.Side wall 102 has generally cylindrical in shape and extends to crimping 106 from base portion 104.Base portion 104 can be with It is stitched the bottom of side wall 102, and crimping 106 can be for example formed on via crimping process on the top of side wall 102. Each of first and second handle ears 108 and 110 are by using such as bolt, welding, binder or known in the art Other connection means be coupled to the outside of side wall 102.On the one hand, first in command ear 108 is relative to second handle ear Portion 110 is positioned on the opposite side of bucket 100, so that each handle ear 108 and 110 is separated from each other around the outside of bucket 100 180 degree.

Certain terms have been used for convenience in the de-scription and it is not limiting.Word " axial direction ", " longitudinal direction ", "left", "right", " upward ", " downward ", " rear ", " preceding ", " top " and " bottom " refer to direction referenced in attached drawing.Term " substantially " it is intended to mean that it is substantially or most of, but is not necessarily the whole of its defined.Term includes above The word of the word, its derivative and similar meaning listed.

Fig. 2 shows the perspective views of bucket 100 according to the one side of the disclosure.Bucket 100 includes lid 112 and the handle being coupled Hand 200.Lid 112 is configured to couple to the crimping 106 being positioned at the top of bucket 100.Bucket 100 may include tank, bucket Or other containers for industry and household products.

Handle 200 is configured to couple to the first and second handle ears 108 and 110 of bucket 100, as follows to retouch in more detail It states.Side wall 102, base portion 104, crimping 106 and lid 112 may include metal.Handle 200 may include plastics, such as poly- third Alkene copolymer, high density polyethylene (HDPE) or other suitable robust plastics usually hard and flexible.Alternatively, Hand 200 may include metal to improve sustainability.

Fig. 3 and Fig. 4 respectively illustrates the front view and rearview of the handle 200 according to all aspects of this disclosure.Handle 200 Including band 202, the first protruding part 204 and the second protruding part 206.When band 202, which is oriented substantially flat, to be placed, As shown in Figures 3 and 4, then axially A from first end 208 extends to second end 210 to band 202.Handle 200 along Axial direction A can be it is elongated so that width of the length of band 202 substantially than band 202 is longer.First protruding part 204 are positioned at the first end 208 of band 202, and the second protruding part 206 is positioned in the second end 210 of band 202 Place.On the one hand, the width at the center towards band 202 of band 202 is less than direction 208 He of the first and second ends of band 210 width, thus band 202 from first end 208 and band 202 tapered towards the center of band 202 from 210 direction of second end The center of band 202 is tapered.At alternative aspect, the width of band 202 is along the length on its in the axial direction A from first end 208 is substantially consistent to second end 210.The first end 208 of band 202 can be configured to be substantially similar to band Second end 210, so that first end 208 is with second end 210 basically about the central symmetry of band 202.First and second protrusions Component 204 and 206 can be coupled to band 202 or the first and second protruding parts 204 and 206 can be with band 202 1 It rises and is integrally formed, to limit integrated component.

Fig. 5 and Fig. 6 respectively illustrates the rear perspective view and front perspective view of the first protruding part 204, and Fig. 7 shows The rearview of one protruding part 204.Description provided below is about the first protruding part 204, however, it will be appreciated that this is retouched It states and also can be applied to the second protruding part 206.It will be appreciated by, the first protruding part 204 can be with the second lug boss Central symmetry of the part 206 basically about band 202.

First protruding part 204 includes inner surface 212 and outer surface 214.Inner surface 212 defines an access to outer surface 214 Chamber 216.Chamber 216 has substantially cylindrical in shape and extends on cavity direction C.Chamber 216 is suitable for receiving bucket 100 in it First in command ear 108.On the one hand, cavity direction C is substantially perpendicular to axial direction A.Outer surface 214 limits first boss 218 and additional boss 220.Preferably, first boss 218 and additional boss 220 are substantially plane and convex along first The periphery for playing component 204 extends and forms oblique angle therebetween.It will be realized that the first protruding part may include being located on its periphery Less or more boss.

With reference to Fig. 7, first boss 218 extends along boss direction L and additional boss 220 prolongs along offset direction L ' It stretches.Both boss direction L and offset direction L ' can angularly be deviated from axial direction A.Boss direction L and offset direction Both L ' may be substantially perpendicular to cavity direction C.On the one hand, first boss 218 and additional boss 220 are basically about axis It is symmetrical to direction A.At alternative aspect, first boss 218 and additional boss 220 are asymmetric, so that additional boss 220 can To have the length more shorter than the length of first boss 218, saving is used to manufacture the amount of the material of handle 200 by this.

First boss 218 is extended linearly from rear end 222 to front end 224 along boss direction L.First boss 218 includes the One rear portion 226 and the first front 228.First front 228 is extended to from the front end of first boss 218 224 positioned at first boss 218 On front end 224 and rear end 222 between point P.First rear portion 226 extends to rear end 222 from point P.Point P is in first boss The position of the center Ce near chamber 216 on 218.On the one hand, point P is spaced apart with the center of band 202 compares from chamber 216 The shorter distance of the distance at center Ce to the center of band 202.On the one hand, the first front 228 is oriented than the first rear portion 226 closer to band 202.

First boss 218 has the length between about 10mm and 50mm that front end 224 is extended to from rear end 222.? On the one hand, the length of first boss 218 is about 25mm.The length at the first rear portion 226 can be less than about 15mm.In a side The length in face, the first rear portion 226 can be less than about 10mm.First front 228 can have with the length at the first rear portion 226 not Same length.On the one hand, the length of the first front 226 is greater than the length at the first rear portion 226.It will be realized that additional boss 220 It can be configured to be substantially similar to first boss 218.

The outer surface 214 of first protruding part 204 further comprises that rear boss 230, first releases nested boss 232 and attached Add the nested boss 234 of releasing.Rear boss 230 is positioned on the top of the first protruding part 204 and releases first nested Boss 232 and additional release extend between nested boss 234.Rear boss 230 can have nonlinear or curve shape. First releases the first rear portion 226 that nested boss 232 is positioned adjacent to first boss 218, and the nested boss of additional releasing 234 are positioned adjacent to the rear portion (not being labeled) of additional boss 220.The nested boss 232 of first releasing is nested with additional releasing Both boss 234 can have nonlinear or curve shape.It will be realized that it is additional release nested boss 234 can be with It is configured to be substantially similar to the first releasing nesting boss 232.

Fig. 8 shows the another aspect of protruding part 304.Protruding part 304 can be configured to be substantially similar to first Protruding part 204, only in addition to protruding part 304 includes the first boss 318 with the first rear portion 326, first rear portion 326 have the length bigger than the length of the first front 328.The length of each section of first boss 218 and 318 can be based on handle The expected performance of hand 200 is selected, as further described herein.

Started using the method for handle 200 by the way that handle 200 is connected to bucket 100.First protruding part 218 is coupled To first in command ear 108, so that first in command ear 108 is positioned in chamber 216.Second protruding part 220 is coupled to Second handle ear 110, so that second handle ear 110 is positioned in the intracavitary of the second protruding part 220.First protruding part 218 and second protruding part 220 be fixed to the first and second handle ears 108 and 110 so that handle 200 can be wound on first The axis rotation extended between second handle ear 108 and 110.First protruding part 218 and the second protruding part 220 can be with It is fixed to the first and second handle ears 108 and 110 in the following way, such as by making the first and second protruding parts Each section is fixed on by 218 and 220 deformations with being assembled in (such as being snapped into) first and second handle ear 108 and 110 Together.Alternatively, the first protruding part 218 and the second protruding part 220 can for example pass through whole folder, rivet component, spiral shell Bolt or other pin-type for rotating between protruding part 218 and 220 and handle ear 108 and 110 of permission, which connect, is fixed to the One and second handle ear 108 and 110.

After handle 200 is coupled to bucket 100, bucket 100 can be nested into second barrel 100 '.Fig. 9-11 is shown The first side view, the second side view and the front view of one multiple bucket 100 being nested on the inside of another.Each bucket 100 can be with It is tapered slightly to allow bucket 100 and similar bucket 100 nested with substantially cylindrical in shape.Bucket each of 100 can be with It is configured to substantially similar with each of other buckets 100.

Bucket 100 is nested in second barrel of 100 ' inside, so that the first boss 218 and second of the first protruding part 204 is convex The second boss 219 of component 206 is played on the top of second barrel 100 ' of upper contact surface 106 '.When bucket 100 is stacked, Load will lead to the rotation of handle 200, thus the boss direction L of first boss 218 and second boss 219 boss direction (not by Mark) it is arranged essentially parallel to contact surface 106 '.In other words, both first boss 218 and second boss 219 are supported with flushing It is disposed by second barrel 100 ' of edge.Second boss 219 can be configured to be substantially similar to first boss 218.Upper contact Surface 106 ' can for example limit crimping.The linearity configuration of first and second boss 218 and 219 by by the weight of bucket 100 more It is evenly distributed in contact surface 106 ' and prevents the damage to upper contact surface 106 '.Linearity configuration basically prevents The excessive loads of the small area of supreme contact surface 106 ' lead to the damage to upper contact surface 106 '.

The length of first and second boss 218 and 219 can weight and/or quantity for example based on the bucket 100 being nested It is selected.For example, can choose the first and second of long length if 100 1, multiple buckets are nested in another top Boss 218 and 219 so as to by distribution of weight in the larger area of upper contact surface 106 '.On the contrary, if a small amount of bucket 100 1 It is a to be nested in another top, then can be selected according to acceptable bucket stress value, overall weight and similar mechanical parameter compared with First and second boss 218 and 219 of short length.

At alternative aspect, the first protruding part 204 and the second protruding part 206 only include single first boss respectively 218 and second boss 219.In this respect, handle 200 must be directed before being coupled to bucket 100, to ensure that first is convex The upper contact surface 106 ' of platform 218 and second boss 219 bucket 100 ' downwards.The benefit of this construction (such as asymmetrically shape) It is to save material and generate smaller and more beautiful product.

Figure 12 shows the perspective view for being nested in bucket 100 shown in Fig. 9-11 one another.The side of first boss 218 To the direction of L and second boss 219 can the slave first end 208 based on handle 200 to second end 210 desired length it is selected It selects.For example, the desired length of handle 200 be so that handle 200 lower section extend and contact below second barrel 100 ' The length of three barrel 100 ' ' of side wall.The desired length can contribute to prevent each bucket 100 from prematurely releasing nesting.This In example, the direction L of first boss 218 and the direction of second boss 219 be might be chosen such that when handle 200 contacts third When bucket 100 ' ', the first and second boss 218 and 219 are substantially flat located in upper contact surface 106 '.

After bucket 100 is nested in second barrel of 100 ' inside, second barrel 100 ' can be to be nested in second with bucket 100 Substantially similar manner is nested on the inside of subsequent bucket in bucket 100 '.As shown in Fig. 9-11, six buckets, 100 1 nestings On the inside of another.It will be realized that less or more bucket 100 can be nested together.

It is coupled to the handle 200 of each corresponding bucket 100 by rotating, can be moved one at a time from the bucket being nested Except each bucket 100.Figure 13 shows the side view for being nested bucket, and wherein bucket 100 is just released from nesting from second barrel 100 '.In order to So that bucket 100 releases nesting, handle 200, which is wound between the first in command ear 108 of bucket 100 and second handle ear 110, to be extended Axis be rotated upwardly to the second position from first position.The first position of handle 200 is by the first and second boss 218 and 219 Substantially flat the upper contact surface 106 ' against second barrel 100 ' of (contact) is placed to limit.The first of handle 200 Position, bucket 100 are positioned in second barrel 100 ' with the first depth, which corresponds to the spacing controlled by handle.? The second position of hand 200 by when handle is just rotated upwards the first and second boss 218 and 219 connect from second barrel 100 ' Touching surface 106 ' angularly deviates to limit.In the second position of handle 200, bucket 100 is positioned in second with the second depth In bucket 100 ', because protrusion can drive upper bucket far from lower bucket around the eccentric motion of ear's center line.On the one hand, in second It sets, is in the center Ce of chamber 116 with the distance between the contact between the first protruding part 204 and upper contact surface 106 ' It is maximum.At alternative aspect, in the second position, the crimping 106(that the axial direction A of handle 200 is arranged essentially parallel to bucket 100 is shown in Figure 13).

Rotation of the handle 200 from first position to the second position is by power from the first protruding part 204 and the second protruding part Both 206 are applied to second barrel 100 ' of upper contact surface 106 ', this is on the direction for leave second barrel 100 ' by bucket 100 from the One depth is promoted to the second depth.First depth be greater than the second depth so that handle 200 rotate when bucket 100 at least partly from It is removed for second barrel 100 '.On the one hand, handle 200 is wound on first in command ear 108 and from first position to the second position The axis extended between second chief ear 110 rotates less than 90 °.

The length and/or change at the first rear portion 226 of the first boss 218 of the first protruding part 204 of change can be passed through The length at the second rear portion (not being labeled) of the second boss 219 of the second protruding part 206 adjusts first from handle 200 It sets to the transformation of the second position of handle 200 (such as releasing nested stroke).The nested stroke distances of releasing (such as in the first depth And the second difference between depth) about between 2mm and 10mm.On the one hand, releasing nested stroke distances is about 6mm.

As handle 200 is transformed into the second position, the contact of first boss 218 and upper contact surface 106 ' from first position It is transformed into the first releasing nesting boss 232 and the contact of upper contact surface 106 '.Similarly, the second of the second protruding part 206 Boss 219 (is not marked with the nested boss of the second releasing that the contact of upper contact surface 106 ' is transformed into the second protruding part 206 Out) with the contact of upper contact surface 106 '.

After handle 200 is rotated to the second position, bucket 100 is released from nesting from second barrel 100 ', and bucket 100 can To be removed from second barrel 100 '.

These above-described specific embodiments are for explanatory purposes and to be not intended to and limit the scope of the present disclosure At other way described and claimed herein.The specific size and material explained herein are not intended to be limited to range.But it is ripe It knows and is nested the personnel of container and will be appreciated that in the presence of the modifications and variations from the embodiment.

Claims

1. a kind of handle, it is characterised in that: the handle includes:

Band with first end and opposite second end；

The first protruding part being positioned at the first end of the band, first protruding part have convex first The first boss that platform side upwardly extends；And

The second protruding part being positioned at the second end of the band, second protruding part have convex second The second boss that platform side upwardly extends,

Wherein, first protruding part and second protruding part are configured to couple to the first tank, so that when described the When one tank is nested in the second tank, the first boss and the second boss are configured to connect on second tank On the top for touching surface, so that the first boss direction and the second boss direction are arranged essentially parallel to the upper contact table Face.

2. handle according to claim 1, wherein when first protruding part and second protruding part are coupled When to first tank, the handle is configured to rotate between the first position and the second position,

Wherein, in the first position, the first boss and the second boss are located at the upper contact of second tank On the top on surface, so that the first boss direction and the second boss direction are arranged essentially parallel to the upper contact table Face, first tank are positioned in second tank with the first depth,

Wherein, in the second position, the first boss and the second boss contact the upper contact of second tank Surface, so that the first boss direction and the second boss direction are angularly deviated from the upper contact surface, it is described First tank is positioned in second tank with the second depth, and

Wherein, first depth is greater than second depth.

3. handle according to claim 2, wherein the handle is constructed such that the handle from the first position Power is applied to the upper contact from first protruding part and second protruding part by the rotation to the second position On surface, this promotes first tank to described second deeply from first depth on the direction for leaving second tank Degree.

4. handle according to claim 3, wherein the difference between first depth and second depth is about Between 2mm and 10mm.

5. handle according to claim 1, wherein first protruding part is limited to extended on the first cavity direction One chamber, the first boss direction are substantially perpendicular to first cavity direction, and wherein, and second protruding part limits The second chamber extended on the second cavity direction, the second boss direction are substantially perpendicular to second cavity direction.

6. handle according to claim 5, wherein first chamber of first protruding part and second protrusion Second chamber of component be suitable for received in it respectively first tank first in command ear and first tank second Handle ear, the first in command ear and the second handle ear are on the opposite side of first tank.

7. handle according to claim 5, wherein the first boss of first protruding part has the first front With the first rear portion, first front extends to the point P in the first boss, the point from one end of the first boss P is in the position at the center near first chamber in the first boss, and first rear portion is extended to from the point P The opposite end of the first boss, first front have the length different from the length at first rear portion.

8. handle according to claim 7, wherein first front is oriented than first rear portion closer to institute State band.

9. handle according to claim 8, wherein first protruding part further comprises that the first releasing nesting is convex Platform, described first, which releases nested boss, is nonlinear and is positioned adjacent to first rear portion.

10. handle according to claim 7, wherein the length of first front is greater than the length at first rear portion.

11. handle according to claim 7, wherein the length of the first boss is between about 10mm and 25mm.

12. handle according to claim 7, wherein the length at first rear portion is less than about 15mm.

13. handle according to claim 12, wherein the length at first rear portion is less than about 10mm.

14. handle according to claim 1, wherein the band includes plastics.

15. handle according to claim 1, wherein when the band is oriented substantially planar placement so that described When band in axial direction extends to the second end from the first end, the first boss direction and the second boss side It is angularly deviated to from the axial direction.

16. handle according to claim 15, wherein first protruding part has in addition to the first boss Additional boss, the additional boss are upwardly extended from the side that the first boss angularly deviates.

17. handle according to claim 16, wherein the first boss and the additional boss are basically about described Axial direction is symmetrical.

18. handle according to claim 1, wherein the band, first protruding part and second lug boss Part is formed integrally with housing casings together, to limit integrated component.

19. handle according to claim 1, wherein when the handle is coupled to first tank, the handle is produced The positive lever mechanism of the raw lever ratio with about 14:1.

20. the first tank is configured to be nested into the second tank, in which:

First tank is configured to be located in second tank, and first tank includes handle, and the handle has first Protruding part and the second protruding part, first protruding part have the first boss upwardly extended in first boss side, institute Stating the second protruding part has the second boss upwardly extended in second boss side；And

The first boss and the second boss are configured to be aligned with the upper contact surface of second tank, so that described One boss direction and the second boss direction are arranged essentially parallel to the upper contact surface.

21. the first tank according to claim 20, in which:

First protruding part is configured to couple to first in command ear；And

Second protruding part is configured to couple to second handle ear,

Wherein, first and second handle ear is located on the opposite side of the side wall of first tank.

22. the first tank according to claim 20, in which:

The handle for being coupled to first tank is configured to rotate to the second position from first position,

Wherein, in the first position, the first boss and the second boss are located at the upper contact surface of second tank Top on so that the first boss direction and the second boss direction are arranged essentially parallel to the upper contact surface, institute The first tank is stated to be positioned in second tank with the first depth,

Wherein, in the second position, first protruding part and second protruding part contact the institute of second tank Contact surface is stated, so that the first boss direction and the second boss direction are angularly inclined from the upper contact surface It moving, first tank is positioned in second tank with the second depth, and

Wherein, first depth is greater than second depth.

23. the first tank according to claim 22, wherein the difference between first depth and second depth exists Between about 2mm and 10mm.

24. the first tank according to claim 22, wherein first protruding part is coupled to first in command ear simultaneously And second protruding part is coupled to second handle ear, first and second handle ear is located at first tank On the opposite side of side wall, wherein so that handle rotation includes so that the handle is wound on the first in command ear and institute State the axis rotation extended between second handle ear.