CN215583378U

CN215583378U - Cup with bouncing nozzle

Info

Publication number: CN215583378U
Application number: CN202120570965.XU
Authority: CN
Inventors: 李世芳
Original assignee: Guangzhou Lizhituo Plastic Mould Co ltd
Current assignee: Guangzhou Lizhituo Plastic Mould Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-01-21
Anticipated expiration: 2031-03-19

Abstract

The utility model provides a bounce nozzle water cup which comprises a water cup main body and a suction nozzle, wherein a through mounting through hole is formed in the water cup main body, the suction nozzle is arranged in the mounting through hole and can slide outwards to a stretching position along a first direction and inwards to a retracting position along a second direction in the mounting through hole, a liquid outlet hole for communicating an inner cavity of the water cup main body with the outside is formed in the suction nozzle, and an elastic device for driving the suction nozzle to slide from the retracting position to the stretching position is arranged on the water cup main body or the suction nozzle; be provided with the buffering face on the inside wall of mounting hole, be provided with buffer portion on the lateral wall of suction nozzle, the suction nozzle is at the gliding in-process between extended position and withdrawal position, and buffer portion can be through the buffering face and compress tightly the frictional force in order to provide the speed that slows down the suction nozzle slip on the buffering face. The utility model can effectively prevent the suction nozzle from deforming and damaging due to violent collision with the cup body or external objects, is beneficial to prolonging the service life of the cup and is convenient to use.

Description

Cup with bouncing nozzle

Technical Field

The utility model relates to the technical field of water cups, in particular to a bouncing nozzle water cup.

Background

The drinking cup is often used for carrying liquid such as water, beverage and the like, for convenient drinking, a suction nozzle can be added to part of the drinking cups at present, the suction nozzle can be made into a telescopic structure so as to reduce the space occupied when the drinking cup is stored and carried, meanwhile, for convenient use, springs for driving the suction nozzle to automatically extend out can be arranged on the drinking cups, and after the drinking cup is opened, the springs can push the suction nozzle to bounce and extend out, so the drinking cup is also called as a bouncing nozzle drinking cup.

In the process of containing and carrying the water cup, liquid can be left in the suction nozzle, after the water cup is opened, the suction nozzle can be quickly ejected out by the spring, the liquid remained in the suction nozzle is easily thrown out along with the ejection of the suction nozzle, and the liquid in the water cup is easily sucked out by negative pressure generated by the quick sliding of the suction nozzle; in addition, the suction nozzle is easy to collide with a water cup or external articles during the ejection process, so that the suction nozzle or the water cup is easy to deform and damage, the service life of the water cup is influenced, large noise can be generated, and inconvenience is brought to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve one of the technical problems in the prior art and provides a bouncing nozzle water cup which is beneficial to prolonging the service life and is convenient to use.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the cup with the bouncing nozzle comprises a cup main body and a suction nozzle, wherein a through mounting through hole is formed in the cup main body, the suction nozzle is arranged in the mounting through hole and can slide outwards to a stretching position along a first direction and inwards to a retracting position along a second direction in the mounting through hole, a liquid outlet hole for communicating an inner cavity of the cup main body with the outside is formed in the suction nozzle, and an elastic device for driving the suction nozzle to slide from the retracting position to the stretching position is arranged on the cup main body or the suction nozzle;

be provided with the buffering face on the inside wall of mounting hole, be provided with buffering portion on the lateral wall of suction nozzle, the suction nozzle is in stretch out the position with gliding in-process between the withdrawal position, buffering portion can pass through the buffering face compresses tightly the frictional force in order to provide the speed that slows down suction nozzle slip on the buffering face.

Preferably, when the suction nozzle is located at the retracted position, the buffer part is pressed against the buffer surface.

Preferably, the displacement length of the buffer part and the buffer surface which are pressed and slide relatively is one third to one half of the whole displacement length of the suction nozzle which slides from the retraction position to the extension position.

Preferably, the buffer part is an elastic buffer convex ring which protrudes laterally on the outer side wall of the suction nozzle and surrounds the suction nozzle, and the buffer surface is an annular surface matched with the buffer convex ring.

Preferably, an inward convex buffer table is arranged on the inner wall of the mounting through hole, and the buffer surface is the inner wall surface of the buffer table.

Preferably, the buffering convex rings are circular rings, the number of the buffering convex rings is two or more, the buffering convex rings are distributed along a first direction, the diameter of each buffering convex ring is gradually increased, and the diameter of the cross section of each buffering surface is gradually increased along the first direction.

Preferably, a first sealing portion is arranged on the suction nozzle, a second sealing portion is arranged in the mounting through hole, and when the suction nozzle is located at the retraction position, the first sealing portion is pressed on the second sealing portion along the second direction to seal the mounting through hole.

Preferably, the first sealing portion is an elastic soft convex ring protruding towards the second direction, a convex seat is convexly arranged in the mounting through hole, and the second sealing portion is in a conical surface shape expanding outwards along the first direction.

Preferably, an upper cover which can be opened and closed is arranged on the cup main body, a first sealing part is arranged on the upper cover, the upper cover can be abutted against the suction nozzle in the buckling process and pushes the suction nozzle to slide from the extending position to the retracting position in the second direction, and the first sealing part is tightly pressed on the suction nozzle to seal the liquid outlet hole when the upper cover is buckled; the water cup comprises a water cup body and is characterized in that an exhaust hole for communicating an inner cavity of the water cup body with the outside is formed in the water cup body, a second sealing portion is arranged on the upper cover, and the second sealing portion is tightly pressed on the water cup body to seal the exhaust hole when the upper cover is buckled.

Preferably, the first sealing portion is a sealing surface having an arc shape, and the first sealing portion is in sliding contact with the suction nozzle during the engagement of the upper cover.

The utility model has the beneficial effects that: in the bouncing nozzle water cup, the elastic device can drive the suction nozzle to automatically slide out in use, and meanwhile, in the process of sliding out the suction nozzle, the buffering part can be pressed on the buffering surface when passing through the buffering surface, so that friction force is generated to slow down the sliding speed of the suction nozzle, liquid in the suction nozzle can be effectively reduced or avoided being thrown out or sucking out the liquid in the water cup main body, and meanwhile, the suction nozzle can be effectively prevented from being deformed and damaged due to violent collision with the water cup main body or external articles, the service life of the water cup is prolonged, and the water cup is convenient to use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a block diagram of a preferred embodiment of the present invention in a top closure;

FIG. 2 is a block diagram of the preferred embodiment of the present invention with the upper lid open;

FIG. 3 is an exploded block diagram of a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view of the preferred embodiment of the present invention with the upper cover snapped;

FIG. 5 is a cross-sectional structural view of the suction nozzle and the inner housing with the suction nozzle in an extended position in accordance with the preferred embodiment of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 5.

Wherein, in the figures, the respective reference numerals:

10. a cup body; 11. mounting a through hole; 12. a buffer surface; 13. a second seal portion; 14. a cup body; 15. a middle cover; 151. an outer housing; 152. an inner housing; 16. a water-proof ring; 17. an exhaust hole; 20. a suction nozzle; 21. a liquid outlet hole; 22. a buffer section; 23. a first seal portion; 24. a substrate; 25. a glue piece; 26. a lower connecting piece; 30. an upper cover; 31. a first sealing part; 32. connecting columns; 41. an elastic device; 42. pressing the button; 43. and (6) a toggle button.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 6, in a preferred embodiment of the present invention, there is provided a bouncing nozzle cup, including a cup main body 10 and a suction nozzle 20, wherein the cup main body 10 is provided with a through installation through hole 11, the suction nozzle 20 is disposed in the installation through hole 11 and can slide outwards to a protruding position along a first direction and inwards to a retracted position along a second direction in the installation through hole 11, a liquid outlet hole 21 for communicating an inner cavity of the cup main body 10 with the outside is disposed in the suction nozzle 20, and the cup main body 10 or the suction nozzle 20 is provided with an elastic device 41 for driving the suction nozzle 20 to slide from the retracted position to the protruding position; the inner side wall of the mounting through hole 11 is provided with a buffering surface 12, the outer side wall of the suction nozzle 20 is provided with a buffering part 22, and in the sliding process of the suction nozzle 20 between the extending position and the retracting position, the buffering part 22 can pass through the buffering surface 12 and is pressed on the buffering surface 12 to provide friction force for reducing the sliding speed of the suction nozzle 20. In the bouncing nozzle water cup, the elastic device 41 can drive the suction nozzle 20 to automatically slide out in use, meanwhile, in the process that the suction nozzle 20 slides out, the buffer part 22 can be pressed on the buffer surface 12 when passing through the buffer surface 12, so that friction force is generated to reduce the sliding speed of the suction nozzle 20, liquid in the suction nozzle 20 can be effectively reduced or avoided being thrown out or sucking out the liquid in the water cup main body 10, and meanwhile, the suction nozzle 20 can be effectively prevented from deforming and damaging due to violent collision with the water cup main body 10 or external articles, the service life of the water cup is prolonged, and the water cup is convenient to use.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

in this embodiment, when the suction nozzle 20 is located at the retracted position, the buffer portion 22 presses against the buffer surface 12, i.e. the suction nozzle 20 starts to be decelerated at the initial stage of the suction nozzle 20 from the retracted position to the extended position, so that the suction nozzle 20 can gradually start to slide, which helps balance the air pressure inside and outside the cup body 10. In this embodiment, the displacement length of the buffer part 22 and the buffer surface 12, which is compressed and slides relatively, is one third to one half of the whole displacement length of the suction nozzle 20 from the retracted position to the extended position, that is, in the proportional stroke of the total stroke of the suction nozzle 20 from the retracted position and outwards slides along the first direction, the buffer part 22 and the buffer surface 12 keep being compressed and continuously provide friction force, so as to reduce the acceleration of the suction nozzle 20, and in the rear stroke, the buffer part 22 can not be attached to the inner wall of the mounting through hole 11 any more, so that the suction nozzle 20 can be extended out relatively quickly in the rear stroke, thereby not increasing the extension time of the suction nozzle 20 too much, and being convenient for use. In other embodiments, the cushioning portion 22 may be configured to keep pressing and rubbing against the cushioning surface 12 during the whole extending process of the suction nozzle 20, or the cushioning stroke of the cushioning portion 22 and the cushioning surface 12 may be other proportion of the whole stroke of the suction nozzle 20, and the cushioning portion 22 and the cushioning surface 12 may also be configured to provide friction force during other periods, such as the later period and the middle period of the extending process of the suction nozzle 20, which can be flexibly adjusted and selected by those skilled in the art according to the needs, without being limited thereto.

In this embodiment, the buffer part 22 is an elastic buffer convex ring protruding laterally on the outer side wall of the suction nozzle 20 and surrounding the suction nozzle 20, the buffer surface 12 is an annular surface matched with the buffer convex ring, the elastic buffer convex ring helps to reduce the requirement on the processing precision, the influence of processing errors can be reduced, the speed reduction degree of the suction nozzle 20 can be flexibly controlled, the production and the manufacture are convenient, meanwhile, the structure can also provide a certain sealing function, and the liquid in the water cup main body 10 is prevented from leaking in the storage and carrying processes. In other embodiments, the buffer portion 22 may be other suitable structures such as a bump, a friction surface, etc. provided on the suction nozzle 20, and the shapes of the buffer portion 22 and the buffer surface 12 may be flexibly adjusted according to the need, but are not limited thereto.

In this embodiment, be provided with bellied cushion table inwards on the inner wall of installation through-hole 11, cushion face 12 is the internal face of cushion table, simple structure, the machine-shaping of being convenient for. In other embodiments, the shape and configuration of the cushioning surface 12 may be flexibly adjusted as desired.

In this embodiment, the number of the buffer convex rings is two, each buffer convex ring is distributed along the first direction, the diameter of each buffer convex ring is gradually increased, and the diameter of the cross section of the buffer surface 12 is gradually increased along the first direction, so that the pressing force of each buffer convex ring on the buffer surface 12 is different, and along with the extension of the suction nozzle 20, the pressing force of each buffer convex ring is changed along with the change of the pressing force, so that the resistance to the suction nozzle 20 can be gradually reduced, and the suction nozzle 20 can be smoothly extended. In other embodiments, the number of the buffer convex rings can be one, three, etc., and the cross-sectional diameters of the buffer surfaces 12 can be consistent, but are not limited to this; alternatively, the buffer convex ring and the buffer surface 12 may be in any other annular shape such as a square shape or an oval shape.

In this embodiment, be provided with first sealing 23 on the suction nozzle 20, be provided with second sealing 13 in the installation through-hole 11, when the suction nozzle 20 was located the withdrawal position, first sealing 23 compressed tightly on second sealing 13 with closed installation through-hole 11 along the second direction, can slow down the wearing and tearing of first sealing 23 and second sealing 13, and can reduce the hindrance to the suction nozzle 20 process of stretching out and retracting, can effectively reduce the dimensional relation requirement of suction nozzle 20 and installation through-hole 11, and the design and manufacturing of being convenient for helps increase of service life and guarantees sealed effect. In other embodiments, the side wall of the suction nozzle 20 can be sealed by abutting against the inner wall of the mounting through hole 11, but not limited thereto.

In this embodiment, the first sealing portion 23 is an elastic soft convex ring protruding in the second direction, a convex seat is convexly arranged in the mounting through hole 11, and the second sealing portion 13 is in a conical surface shape extending outward in the first direction, so that the first sealing portion 23 and the second sealing portion 13 can be in close contact, the sealing effect is ensured, the requirement on the processing precision of the product can be reduced, and the product cost is reduced and the yield is improved. In other embodiments, the shapes of the first sealing portion 23 and the second sealing portion 13 may be flexibly adjusted as needed, or a hard structure may be used, but the present invention is not limited thereto.

The cup body 10 is provided with an openable upper cover 30, the upper cover 30 is provided with a first sealing part 31, the upper cover 30 can abut against the suction nozzle 20 in the buckling process and push the suction nozzle 20 to slide from the extending position to the retracting position in the second direction, and the first sealing part 31 is tightly pressed on the suction nozzle 20 to seal the liquid outlet hole 21 when the upper cover 30 is buckled; the cup body 10 is provided with an exhaust hole 17 for communicating the inner cavity of the cup body 10 with the outside, the upper cover 30 is provided with a second sealing part, and the second sealing part is tightly pressed on the cup body 10 to seal the exhaust hole 17 when the upper cover 30 is buckled. In use, can promote the suction nozzle 20 withdrawal through lock upper cover 30, after opening upper cover 30, resilient means 41 can promote the suction nozzle 20 to stretch out, need not the hand and contact with suction nozzle 20, it is more sanitary, and also convenient to use, after suction nozzle 20 withdrawal, first sealing 31 can seal the play liquid hole 21 of suction nozzle 20, prevent that liquid spills in drinking cup main part 10, and when opening upper cover 30, second sealing no longer seals exhaust hole 17 thereupon, drinking cup main part 10 can be through the balanced internal and external pressure of exhaust hole 17, avoid causing the hindrance and prevent the interior liquid blowout of drinking cup main part 10 to the stretching out of suction nozzle 20, facilitate the use.

In this embodiment, the first sealing portion 31 is an arc-shaped sealing surface, and during the process of engaging the upper cover 30, the first sealing portion 31 is in sliding contact with the suction nozzle 20, and this shape of the sealing surface can adjust the direction of the force applied to the suction nozzle 20, thereby preventing the suction nozzle 20 from being forced to bend and deform, which contributes to prolonging the service life, and is convenient for engaging the upper cover 30, and is convenient for use. In other embodiments, the first sealing portion 31 may be selected from other suitable shapes, but is not limited thereto.

In this embodiment, the second sealing portion is an elastic and soft sealing block, and when the upper cover 30 is fastened, the sealing block is pressed against the outlet end of the vent hole 17, which is helpful for improving the sealing effect, reducing the requirement of processing precision, and facilitating production and manufacturing. In this embodiment, a connection column 32 is provided in the upper cover 30, and the sealing block is inserted into an inner hole of the connection column 32, in other embodiments, the sealing block may be installed by other methods such as bonding, or may be integrally formed on the upper cover 30; the second sealing portion may be a hard sealing surface or other sealing structure such as a plug, but is not limited thereto.

In this embodiment, the cup body 10 comprises a cup body 14 and a middle cover 15 connected to the cup body 14, the mounting through hole 11 is arranged on the middle cover 15 and is arranged obliquely, the suction nozzle 20 is correspondingly inclined, the first direction is an upward oblique direction, and the second direction is a downward oblique direction, so that the head of the suction nozzle 20 can be closer to the edge of the cup body 10, and the use is convenient; the middle cover 15 comprises an outer shell 151 and an inner shell 152 which are bonded together, a cylindrical structure is formed on the inner shell 152 to form an installation through hole 11, the processing and the forming are convenient, the outer shell 151 is screwed on the top of the cup body 14, and a water-stop ring 16 with a sealing function is arranged between the inner shell 152 and the upper edge of the cup body 14 in a cushioning mode. The suction nozzle 20 comprises a base body 24, a glue piece 25 and a lower connecting piece 26, the glue piece 25 is sleeved on the upper portion of the base body 24, the middle portion of the base body 24 penetrates through the liquid outlet hole 21, the lower connecting piece 26 is screwed at the lower end of the base body 24, when the suction nozzle 20 is located at a protruding position, the lower connecting piece 26 is abutted to the lower end of the cylindrical structure of the inner shell 152, the protruding position of the suction nozzle 20 can be located, and a certain sealing effect can be achieved. The colloid piece 25 is soft and is usually made of food-grade silica gel material, so that the comfort and safety during use are improved. In other embodiments, the shapes, structures, materials, etc. of the cup body 10 and the suction nozzle 20 can be flexibly adjusted according to the needs, for example, the cup body 10 and the suction nozzle 20 can be respectively of an integrated structure, or the middle cover 15 can be of an integrated structure, etc., and the orientation of the mounting through hole 11 can also be other directions, such as a lateral direction, etc., without being limited thereto. In this embodiment, the buffer portion 22 and the first sealing portion 23 are integrally formed on the plastic member 25, which facilitates molding and also helps to improve sealing performance, the second sealing portion 13 is a stepped end surface in the mounting through hole 11, and in other embodiments, the first sealing portion 23 and the buffer portion 22 can be separately molded and then mounted on the suction nozzle 20, but not limited thereto.

In this embodiment, the elastic device 41 is a spring sleeved outside the suction nozzle 20, and has a simple structure, and is convenient to manufacture and assemble, in other embodiments, the elastic device 41 may also adopt other elastic structures such as an elastic pull rope, or may also use the elastic structure of the suction nozzle 20 or the cup body 10 itself to drive the suction nozzle 20 to extend out.

In this embodiment, the upper cover 30 is pivoted on the middle cover 15 and can be rotated to open and close, a torsion spring for driving the upper cover 30 to rotate to open is arranged between the upper cover 30 and the middle cover 15, a lock catch for locking the upper cover 30 at the buckling position is arranged on the middle cover 15, the lock catch realizes locking and unlocking through the pressing button 42, after the pressing button 42 is pressed down to unlock the lock catch in use, the torsion spring can drive the upper cover 30 to automatically open, the use is convenient, meanwhile, the lock catch is also provided with the toggle button 43 for locking the action of the pressing button 42, and the accidental opening of the upper cover 30 is avoided. In other embodiments, the upper cover 30 may be detachably connected to open or close, or the upper cover 30 may not be included.

In use, the bottom of the suction nozzle 20 is generally connected to a suction tube extending to the bottom of the cup body 10 to facilitate the suction of the liquid in the cup body 10.

The water cup with the telescopic mouth and the water cup body 10 contained by the water cup provided by the utility model can be used for containing liquid beverages such as water, beverages, fresh milk and the like but not limited to the water cup, wherein the water cup is only a custom name of a person skilled in the art and is not limited to the application field of the water cup

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A cup with a bounce nozzle is characterized in that: the cup comprises a cup main body (10) and a suction nozzle (20), wherein a through mounting through hole (11) is formed in the cup main body (10), the suction nozzle (20) is arranged in the mounting through hole (11) and can slide outwards to a protruding position along a first direction and inwards to a retracting position along a second direction in the mounting through hole (11), a liquid outlet hole (21) for communicating an inner cavity of the cup main body (10) with the outside is formed in the suction nozzle (20), and an elastic device (41) for driving the suction nozzle (20) to slide to the protruding position from the retracting position is arranged on the cup main body (10) or the suction nozzle (20);

be provided with buffering face (12) on the inside wall of mounting hole (11), be provided with buffer (22) on the lateral wall of suction nozzle (20), suction nozzle (20) are in stretch out the position with gliding in-process between the withdrawal position, buffer (22) can pass through buffer (12) and compress tightly the frictional force in order to provide the speed of slowing down suction nozzle (20) slip on buffer (12).

2. The pop-up nozzle cup as claimed in claim 1, wherein: when the suction nozzle (20) is located at the retracted position, the buffer part (22) is pressed against the buffer surface (12).

3. The pop-up nozzle cup as claimed in claim 2, wherein: the displacement length of the buffer part (22) and the buffer surface (12) which are pressed and slide relatively is one third to one half of the whole displacement length of the suction nozzle (20) which slides from the retraction position to the extension position.

4. The pop-up nozzle cup as claimed in claim 1, wherein: the buffer part (22) is an elastic buffer convex ring which is protruded on the outer side wall of the suction nozzle (20) in the lateral direction and surrounds the suction nozzle (20), and the buffer surface (12) is an annular surface matched with the buffer convex ring.

5. The pop-up nozzle cup as claimed in claim 4, wherein: an inward convex buffer platform is arranged on the inner wall of the mounting through hole (11), and the buffer surface (12) is the inner wall surface of the buffer platform.

6. The pop-up nozzle cup as claimed in claim 4, wherein: the buffer convex rings are circular rings, the number of the buffer convex rings is two or more, the buffer convex rings are distributed along a first direction, the diameters of the buffer convex rings are gradually increased, and the diameters of the cross sections of the buffer surfaces (12) are gradually increased along the first direction.

7. The bounce nozzle cup according to any one of claims 1 to 6, wherein: the suction nozzle (20) is provided with a first sealing portion (23), a second sealing portion (13) is arranged in the mounting through hole (11), and when the suction nozzle (20) is located at the retraction position, the first sealing portion (23) is pressed on the second sealing portion (13) along the second direction to seal the mounting through hole (11).

8. The pop-up nozzle cup as claimed in claim 7, wherein: the first sealing part (23) is an elastic soft convex ring protruding towards the second direction, a convex seat is convexly arranged in the mounting through hole (11), and the second sealing part (13) is in a conical surface shape expanding outwards along the first direction.

9. The bounce nozzle cup according to any one of claims 1 to 6, wherein: an openable upper cover (30) is arranged on the cup main body (10), a first sealing part (31) is arranged on the upper cover (30), the upper cover (30) can be abutted against the suction nozzle (20) in the buckling process and can push the suction nozzle (20) to slide to the retraction position from the extension position towards the second direction, and the first sealing part (31) is pressed on the suction nozzle (20) to seal the liquid outlet hole (21) when the upper cover (30) is buckled; the water cup is characterized in that an exhaust hole (17) which communicates the inner cavity of the water cup body (10) with the outside is formed in the water cup body (10), a second sealing portion is arranged on the upper cover (30), and the second sealing portion is tightly pressed on the water cup body (10) to seal the exhaust hole (17) when the upper cover (30) is buckled.

10. The pop-up nozzle cup as claimed in claim 9, wherein: the first sealing part (31) is an arc-shaped sealing surface, and the first sealing part (31) is in sliding contact with the suction nozzle (20) in the process of fastening the upper cover (30).