CN114248285A

CN114248285A - Special intelligent mechanical arm of electronic commerce product show robot

Info

Publication number: CN114248285A
Application number: CN202210015711.0A
Authority: CN
Inventors: 林泉君
Original assignee: Zhejiang Business College
Current assignee: Zhejiang Business College
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-03-29

Abstract

The invention discloses an intelligent mechanical arm special for an electronic commerce product display robot, and relates to the field of electronic commerce product display. This special intelligent manipulator of electronic commerce product show robot includes the pallet, shifting arm and clamping arm, the quantity of clamping arm is two sets of and is the symmetrical formula and distributes, shifting arm fixed connection is at the top of pallet, the first riser of bottom both sides fixedly connected with and the second riser of pallet, lower extreme fixedly connected with gag lever post between first riser and the second riser, the first bearing of fixedly connected with is located at the lateral wall center of first riser, the fixedly connected with second bearing is located at the lateral wall center of second riser, the axle center department rotation of first bearing and second bearing is connected with the lead screw. This special intelligent manipulator of electronic commerce product show robot compares and presss from both sides tightly in traditional gripper, and the device can not shelter from to the outer wall of bottle, the all-round show of being convenient for, and the bottle atress is even moreover, can not be broken, also can not produce tight vestige of clamp.

Description

Special intelligent mechanical arm of electronic commerce product show robot

Technical Field

The invention relates to the technical field of electronic commerce product display, in particular to an intelligent manipulator special for an electronic commerce product display robot.

Background

Electronic commerce generally refers to a novel business operation mode in which, in wide commercial and trade activities worldwide, in an internet open network environment, buyers and sellers conduct various commercial and trade activities in an unfenced manner based on a server application mode, and various commercial activities, transaction activities, financial activities and related comprehensive service activities of online shopping of consumers, online transactions and online electronic payments among merchants are realized.

In the exhibition, in order to show the products to the audience better, the special intelligent manipulator for the electronic commerce product display robot is often needed, the products can be well shown to the audience, the functions of attracting eyes and increasing human vitality can be achieved, most of the existing manipulators adopt a mechanical claw type external clamping assembly, when bottle-like objects need to be shown in the exhibition, the mechanical claw is used for grabbing the bottles, which is very inconvenient and can cause the bottles to loosen, the outer surfaces of the bottles are smooth and inconvenient to grab because most of cylindrical shape, and the bottles can be broken even if the bottles are serious due to the trace generated on the outer surfaces of the bottles when the force is too large, and the mechanical claw can shield the outer walls of the bottles when the bottles are grabbed by the mechanical claw, so that the display effect is influenced, aiming at the defects of the prior art, the invention discloses the special intelligent manipulator for the electronic commerce product display robot, to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention discloses an intelligent manipulator special for an electronic commerce product display robot, which aims to solve the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the special intelligent manipulator for the electronic commerce product display robot comprises a flat rack, moving arms and clamping arms, wherein the number of the clamping arms is two, the clamping arms are symmetrically distributed, the moving arms are fixedly connected to the top of the flat rack, a first vertical plate and a second vertical plate are fixedly connected to two sides of the bottom of the flat rack, a limiting rod is fixedly connected to the lower end between the first vertical plate and the second vertical plate, a first bearing is fixedly connected to the center of the side wall of the first vertical plate, a second bearing is fixedly connected to the center of the side wall of the second vertical plate, a lead screw is rotatably connected to the axes of the first bearing and the second bearing, the right end of the lead screw penetrates through the second bearing to extend rightwards and is fixedly connected with a driven gear, a motor body is fixedly mounted at the right end of the top of the flat rack, and a driving gear is fixedly connected to the output end of the right end of the motor body, the driving gear is meshed with the driven gear, the upper end of the side wall of the clamping arm is fixedly connected with a connecting rod, one end of the connecting rod, which is far away from the clamping arm, is fixedly connected with a limiting block, the limiting block is provided with a limiting hole and is connected with the limiting rod in a sliding manner through the limiting hole, the upper end of the side wall of the limiting block is provided with a threaded hole, the limiting block is in threaded connection with a lead screw through the threaded hole, the thread turning directions from the middle part to the two ends of the lead screw are opposite, an inner cavity is arranged inside the clamping arm, a rectangular opening is arranged outside the clamping arm, a positioning mounting plate is fixedly connected in the inner cavity of the clamping arm, the side wall of the positioning mounting plate is fixedly connected with an air bag main body, the air bag main body is just opposite to the rectangular opening of the clamping arm, the top of the air bag main body is fixedly connected with a connecting hose, and the connecting hose is communicated with the inner cavity of the air bag main body, circular logical groove has been seted up at the top of removal arm, the top of coupling hose passes the circular logical groove that presss from both sides tight arm and upwards extend and pass the removal arm and upwards extend.

Preferably, one end of the connecting hose, which is far away from the airbag main body, is fixedly connected with the air pump, and the outer part of the clamping arm is coated by a rubber pad.

Preferably, the top of pallet is equipped with the installation mechanism corresponding with motor main part, installation mechanism includes cardboard and installation rail, installation rail fixed connection is at the top of pallet, cardboard fixed connection is in motor main part's bottom.

Preferably, the side of the mounting rail is provided with a clamping groove corresponding to the clamping plate, the top of the mounting rail is provided with an opening corresponding to the motor main body, the clamping plate is movably clamped in the clamping groove of the mounting rail, the motor main body is movably clamped in the opening of the mounting rail, the top of the clamping plate is provided with two sets of locking holes, and the top of the mounting rail is fixedly connected with two sets of locking sleeves.

Preferably, the inner chamber has been seted up to the inside of locking sleeve, sliding connection has the sliding block in the inner chamber of locking sleeve, the bottom fixedly connected with check lock lever of sliding block, the top fixedly connected with handle pull rod of sliding block, the spring has been cup jointed on the handle pull rod.

Preferably, the bottom of the locking rod passes through the locking sleeve and the mounting rail and is movably inserted into the locking hole.

Preferably, the top of the handle pull rod penetrates through the locking sleeve and extends upwards, the top of the spring abuts against an inner cavity of the locking sleeve, the bottom of the spring abuts against the top of the sliding block, and the spring is in a compressed state.

Preferably, the first bearing, the second bearing, the screw rod and the central axis of the driven gear coincide with each other, and the screw rod is located above the limiting rod.

Preferably, the top of the clamping arm is provided with an opening corresponding to the connecting hose, and the bottom of the pallet is also provided with an opening corresponding to the connecting hose.

The invention discloses an intelligent manipulator special for an electronic commerce product display robot, which has the following beneficial effects:

1. the intelligent manipulator special for the electronic commerce product display robot is convenient to grab bottle bodies when in use, so that the bottle bodies can be displayed in all directions by the device main body, when the bottle bodies are clamped and fastened, the air bag main body is directly stretched into the bottle body, the inside of the bottle body is rough, the friction force is large, the air bag main body is utilized to inflate and apply pressure to the inner wall of the inner cavity of the bottle body, when the air bag main body is inflated and expanded, the stress area of the inner cavity of the bottle bodies is large, the bottle bodies are not easy to break, and the pressure is convenient to control through the air pump, so that when the bottle bodies are displayed, the clamping and fixing effects on the bottle bodies are good, compared with the clamping of the traditional mechanical claws, the device can not shield the outer wall of the bottle body, is convenient to display in all directions, is uniform in stress of the bottle bodies, and can not break, clamping traces can not be generated, the integrity of the appearance of the bottle body is ensured, and the requirements of users are met.

2. This special intelligent mechanical hand of electronic commerce product show robot, installation mechanism through setting up makes the user be convenient for install and pull down motor main part, consequently makes the later stage be convenient for better maintain and overhaul motor main part, also is convenient for change motor main part when motor main part damages, just so can guarantee that motor main part's fault rate is little, makes the regulation to pressing from both sides tight arm keep accurate, consequently guarantees the tight effect of clamp to bottle class article, satisfies the user demand.

3. This special intelligent mechanical hand of electronic commerce product show robot, the interval between the two sets of clamping arms of motor main part control, adjust to the bottleneck size, in motor main part during operation, can drive the driving gear and rotate, the driving gear drives the slave wheel gear and rotates, the slave wheel gear drives the screw rod and rotates, because the screw thread at the middle part to both ends of screw rod revolves to opposite, drive two sets of stoppers and move in opposite directions or opposite movements this moment, the stopper slides along the gag lever post, the stopper drives the connecting rod motion, the connecting rod drives and presss from both sides the clamping arm motion, when interval to bottleneck size between the clamping arm is adjusted, control the shifting arm downstream this moment and make two sets of clamping arms be located inside the bottle, the gag lever post can support and spacing two sets of stoppers, guarantee device's stability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view showing the structure of the main body of the apparatus of the present invention;

FIG. 3 is a block diagram of the stopper of the present invention;

FIG. 4 is a structural view of a lead screw of the present invention;

FIG. 5 is a cross-sectional view of the overall construction of the present invention;

FIG. 6 is an installation view of the motor body of the present invention;

FIG. 7 is a view of the mounting rail structure of the present invention;

fig. 8 is a cross-sectional view of the locking sleeve of the present invention.

In the figure: 1. a pallet; 2. a moving arm; 3. a first vertical plate; 4. a second vertical plate; 5. a limiting rod; 6. a first bearing; 7. a second bearing; 8. a screw rod; 9. a slave wheel gear; 10. a motor main body; 11. a driving gear; 12. a clamp arm; 13. a connecting rod; 14. a limiting block; 15. a limiting hole; 16. a threaded hole; 17. positioning the mounting plate; 18. an airbag main body; 19. a connecting hose; 20. clamping a plate; 21. a locking hole; 22. mounting a rail; 23. a locking sleeve; 24. a slider; 25. a locking lever; 26. a handle pull rod; 27. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-8, an intelligent manipulator special for an e-commerce product display robot comprises a flat rack 1, two sets of moving arms 2 and two sets of clamping arms 12, wherein the two sets of clamping arms 12 are symmetrically distributed, the moving arms 2 are fixedly connected to the top of the flat rack 1, a first vertical plate 3 and a second vertical plate 4 are fixedly connected to two sides of the bottom of the flat rack 1, a limit rod 5 is fixedly connected to the lower end between the first vertical plate 3 and the second vertical plate 4, a first bearing 6 is fixedly connected to the center of the side wall of the first vertical plate 3, a second bearing 7 is fixedly connected to the center of the side wall of the second vertical plate 4, a lead screw 8 is rotatably connected to the axes of the first bearing 6 and the second bearing 7, the right end of the lead screw 8 passes through the second bearing 7 to extend rightwards and is fixedly connected with a driven wheel gear 9, a motor main body 10 is fixedly mounted at the right end of the top of the flat rack 1, a driving gear 11 is fixedly connected to the right end of the motor main body 10, the driving gear 11 is engaged with the driven gear 9, the upper end of the side wall of the clamping arm 12 is fixedly connected with a connecting rod 13, one end of the connecting rod 13, which is far away from the clamping arm 12, is fixedly connected with a limiting block 14, a limiting hole 15 is formed in the limiting block 14, the limiting block 14 is connected to the limiting rod 5 in a sliding manner through the limiting hole 15, the upper end of the side wall of the limiting block 14 is provided with a threaded hole 16, the limiting block 14 is in threaded connection with the lead screw 8 through the threaded hole 16, the thread turning directions from the middle part to the two ends of the lead screw 8 are opposite, an inner cavity is formed in the clamping arm 12, a rectangular opening is formed in the outer side of the clamping arm 12, a positioning mounting plate 17 is fixedly connected in the inner cavity of the clamping arm 12, the side wall of the positioning mounting plate 17 is fixedly connected with an airbag main body 18, the airbag main body 18 is opposite to the rectangular opening of the clamping arm 12, the top of the airbag main body 18 is fixedly connected with a connecting hose 19, and the connecting hose 19 is communicated with the inner cavity of the airbag main body 18, the top of the moving arm 2 is provided with a circular through groove, and the top of the connecting hose 19 passes through the clamping arm 12 to extend upwards and passes through the circular through groove of the moving arm 2 to extend upwards.

As a technical optimization scheme of the invention, one end of the connecting hose 19, which is far away from the air bag main body 18, is fixedly connected with the air pump, the outer part of the clamping arm 12 is coated by a rubber pad, and the arranged rubber pad can avoid the bottle body objects from being damaged due to collision, and can buffer and absorb shock.

As a technical optimization scheme of the invention, the first bearing 6, the second bearing 7, the screw rod 8 and the driven gear 9 are superposed, the screw rod 8 is positioned above the limiting rod 5, and the screw rod 8 can stably rotate along the inner parts of the first bearing 6 and the second bearing 7.

As a technical optimization of the present invention, the top of the clamping arm 12 is opened with an opening corresponding to the connecting hose 19, and the bottom of the pallet 1 is also opened with an opening corresponding to the connecting hose 19.

When the device is used, bottle-like objects can be clamped, supported and lifted for display by the device, when the device is operated, the movable arm 2 can be controlled to be positioned above the bottle-like objects, the movable arm 2 is fixedly arranged on a mechanical arm, so the rotary translation can be realized, the specific realization mode is the prior art, and the repeated description is omitted, the invention focuses on the grabbing and fixing of the bottle-like objects, when the movable arm 2 is controlled to be positioned above the bottle-like objects, the space between two groups of clamping arms 12 can be controlled by the motor main body 10 at the moment, the bottle mouth size is adjusted, when the motor main body 10 works, the driving gear 11 can be driven to rotate, the driving gear 11 drives the driven gear 9 to rotate, the driven gear 9 drives the screw rod 8 to rotate, and because the screw threads from the middle part to the two ends of the screw rod 8 are in opposite directions, the two groups of limiting blocks 14 are driven to move oppositely or oppositely, stopper 14 slides along gag lever post 5, stopper 14 drives connecting rod 13 motion, connecting rod 13 drives and presss from both sides tight arm 12 motion, when interval to bottleneck size between the tight arm 12 of regulation clamp, control moving arm 2 downstream this moment and make two sets of tight arms 12 of clamp be located inside the bottle, accessible air pump is inflated to two sets of coupling hose 19 this moment, coupling hose 19 conveys atmospheric pressure and gas to in the inner chamber of gasbag main part 18, make gasbag main part 18 inflation volume increase and extrude the inner wall of bottle, when pressure makes gasbag main part 18 be greater than the self gravity of bottle to the static friction of bottle, can support the bottle fixed and snatch this moment, can all-round show bottle itself through the removal rotation of the moving arm 2 that sets up, and then realize carrying out all-round show to electronic commerce bottle class product.

For those skilled in the art, when the device is used, the bottle body object can be conveniently grabbed, so that the device body can comprehensively display the bottle body object, when the bottle body object is clamped and fastened, the air bag body 18 directly extends into the bottle body, the interior of the bottle body is rough, the friction force is large, the air bag body 18 is used for inflating and applying pressure to the inner wall of the inner cavity of the bottle body, when the air bag body 18 is inflated and expanded, the stress area of the inner cavity of the bottle body object is large, the bottle body is not easy to break, and the pressure is convenient to control through the air pump, so that when the bottle body object is displayed, the clamping and fixing effect on the bottle body object is good, compared with the traditional clamping of a mechanical claw, the device can not shield the outer wall of the bottle body, is convenient to comprehensively display, and the bottle body is uniformly stressed and cannot break, and clamping marks can not be generated, the integrity of the appearance of the bottle body is ensured, and the requirements of users are met.

Example 2:

example 2 is a modification of example 1.

As a technical optimization scheme of the invention, the top of the pallet 1 is provided with a mounting mechanism corresponding to the motor main body 10, the mounting mechanism comprises a clamping plate 20 and a mounting rail 22, the mounting rail 22 is fixedly connected to the top of the pallet 1, and the clamping plate 20 is fixedly connected to the bottom of the motor main body 10.

As a technical optimization scheme of the invention, a clamping groove corresponding to the clamping plate 20 is arranged on the side surface of the mounting rail 22, an opening corresponding to the motor main body 10 is formed in the top of the mounting rail 22, the clamping plate 20 is movably clamped in the clamping groove of the mounting rail 22, the motor main body 10 is movably clamped in the opening of the mounting rail 22, two groups of locking holes 21 are formed in the top of the clamping plate 20, two groups of locking sleeves 23 are fixedly connected to the top of the mounting rail 22, and when the motor main body 10 is clamped in the opening of the mounting rail 22, the driving gear 11 is clamped with the driven gear 9.

As a technical optimization scheme of the invention, an inner cavity is formed in the locking sleeve 23, a sliding block 24 is connected in the inner cavity of the locking sleeve 23 in a sliding manner, a locking rod 25 is fixedly connected to the bottom of the sliding block 24, a handle pull rod 26 is fixedly connected to the top of the sliding block 24, a spring 27 is sleeved on the handle pull rod 26, and a user can conveniently pull the sliding block 24 through the arranged handle pull rod 26, so that the locking rod 25 can be conveniently pulled.

As a technical optimization scheme of the invention, the bottom of the locking rod 25 passes through the locking sleeve 23 and the mounting rail 22 and is movably inserted into the locking hole 21, the top of the handle pull rod 26 passes through the locking sleeve 23 and extends upwards, the top of the spring 27 abuts against the inner cavity of the locking sleeve 23, the bottom of the spring 27 abuts against the top of the sliding block 24, the spring 27 is in a compressed state, the counter-acting force of the spring 27 can be applied to the sliding block 24, and the locking rod 25 is ensured to be stably inserted into the locking hole 21, so that the fixing and mounting effects on the motor body 10 are ensured.

When the motor main body 10 is used, the arranged motor main body 10 is convenient to mount and dismount, so that later-stage workers can conveniently maintain, overhaul and replace the motor main body 10, when the motor main body 10 is mounted, firstly, the handle pull rod 26 can be pulled upwards, the handle pull rod 26 drives the sliding block 24 to move upwards, the sliding block 24 drives the locking rod 25 to move upwards and simultaneously compress the spring 27, at the moment, the clamping plate 20 can be aligned to the mounting rail 22 and clamped, the motor main body 10 is pushed to be completely clamped, then the handle pull rod 26 is loosened, the spring 27 stretches and drives the sliding block 24 to move, the sliding block 24 drives the locking rod 25 to be inserted into the locking hole 21, so that the motor main body 10 is mounted and fixed, when the motor main body 10 needs to be maintained and dismounted to be overhauled at later stage, the operation of taking down the motor main body 10 can be opposite to the mounting process, simple operation, time saving and labor saving.

To technical personnel in the field, this device makes the user be convenient for install and pull down motor main body 10 through the installation mechanism that sets up, consequently makes the later stage be convenient for better maintain and overhaul motor main body 10, also is convenient for change motor main body 10 when motor main body 10 damages, just so can guarantee that motor main body 10's fault rate is little for the regulation to pressing from both sides tight arm 12 keeps accurate, consequently guarantees the tight effect of clamp to bottle class article, satisfies the user demand.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a special intelligent robot of electronic commerce product show robot, includes pallet (1), removal arm (2) and clamping arm (12), its characterized in that: the number of the clamping arms (12) is two, the clamping arms are symmetrically distributed, the moving arms (2) are fixedly connected to the top of the pallet (1), a first vertical plate (3) and a second vertical plate (4) are fixedly connected to two sides of the bottom of the pallet (1), and a limiting rod (5) is fixedly connected to the lower end between the first vertical plate (3) and the second vertical plate (4);

the utility model discloses a lead screw, including the lateral wall center of first riser (3) fixedly connected with first bearing (6), the lateral wall center of second riser (4) fixedly connected with second bearing (7), the axle center department of first bearing (6) and second bearing (7) rotates and is connected with lead screw (8), the right-hand member of lead screw (8) passes second bearing (7) and extends right and fixedly connected with from pinion gear (9).

2. The intelligent manipulator special for e-commerce product display robot as claimed in claim 1, wherein: the motor comprises a flat rack (1), a motor main body (10) is fixedly mounted at the right end of the top of the flat rack (1), a driving gear (11) is fixedly connected at the output end of the right end of the motor main body (10), the driving gear (11) is meshed with a driven gear (9), a connecting rod (13) is fixedly connected at the upper end of the side wall of a clamping arm (12), a limiting block (14) is fixedly connected at one end of the connecting rod (13) far away from the clamping arm (12), a limiting hole (15) is formed in the limiting block (14), the limiting block (14) is connected on a limiting rod (5) in a sliding mode through the limiting hole (15), a threaded hole (16) is formed in the upper end of the side wall of the limiting block (14), the limiting block (14) is in threaded connection with a screw rod (8) through the threaded hole (16), the middle of the screw rod (8) is opposite to the thread turning directions at the two ends, and an inner cavity is arranged inside of the clamping arm (12), the rectangle opening has been seted up in the outside of pressing from both sides tight arm (12), fixedly connected with location mounting panel (17) in the inner chamber of pressing from both sides tight arm (12), the lateral wall fixedly connected with gasbag main part (18) of location mounting panel (17), gasbag main part (18) are just to the rectangle opening part of pressing from both sides tight arm (12), the top fixedly connected with coupling hose (19) of gasbag main part (18), coupling hose (19) are linked together with the inner chamber of gasbag main part (18), circular logical groove has been seted up at the top of removal arm (2), the top of coupling hose (19) is passed and is pressed from both sides tight arm (12) and upwards extend and pass the circular logical groove of removal arm (2) and upwards extend.

3. The smart manipulator dedicated to an e-commerce product display robot as claimed in claim 2, wherein: one end of the connecting hose (19) far away from the air bag main body (18) is fixedly connected with the air pump, and the outer part of the clamping arm (12) is coated by a rubber pad.

4. The intelligent manipulator special for e-commerce product display robot as claimed in claim 1, wherein: the top of pallet (1) is equipped with the installation mechanism corresponding with motor main part (10), installation mechanism includes cardboard (20) and installation rail (22), installation rail (22) fixed connection is at the top of pallet (1), cardboard (20) fixed connection is in the bottom of motor main part (10).

5. The smart manipulator dedicated to an e-commerce product display robot as claimed in claim 4, wherein: the side of installation rail (22) is equipped with the draw-in groove corresponding with cardboard (20), the opening corresponding with motor main part (10) is seted up at the top of installation rail (22), cardboard (20) activity joint is in the draw-in groove of installation rail (22), motor main part (10) activity joint is in the opening of installation rail (22), two sets of locking holes (21) have been seted up at the top of cardboard (20), the top fixedly connected with two sets of locking sleeve (23) of installation rail (22).

6. The intelligent manipulator special for e-commerce product display robot as claimed in claim 5, wherein: the inner chamber has been seted up to the inside of locking sleeve (23), sliding connection has sliding block (24) in the inner chamber of locking sleeve (23), bottom fixedly connected with check lock lever (25) of sliding block (24), the top fixedly connected with handle pull rod (26) of sliding block (24), spring (27) have been cup jointed on handle pull rod (26).

7. The smart manipulator dedicated to an e-commerce product display robot as claimed in claim 6, wherein: the bottom of the locking rod (25) passes through the locking sleeve (23) and the mounting rail (22) and is movably inserted in the locking hole (21).

8. The smart manipulator dedicated to an e-commerce product display robot as claimed in claim 6, wherein: the top of the handle pull rod (26) penetrates through the locking sleeve (23) and extends upwards, the top of the spring (27) abuts against the inner cavity of the locking sleeve (23), the bottom of the spring (27) abuts against the top of the sliding block (24), and the spring (27) is in a compressed state.

9. The intelligent manipulator special for e-commerce product display robot as claimed in claim 1, wherein: the first bearing (6), the second bearing (7), the screw rod (8) and the central axis of the driven gear (9) are overlapped, and the screw rod (8) is located above the limiting rod (5).

10. The intelligent manipulator special for e-commerce product display robot as claimed in claim 1, wherein: the top of the clamping arm (12) is provided with an opening corresponding to the connecting hose (19), and the bottom of the pallet (1) is also provided with an opening corresponding to the connecting hose (19).