WO2016012989A2 - Improved compressor and kit for repairing and inflating an inflatable article comprising the same - Google Patents

Improved compressor and kit for repairing and inflating an inflatable article comprising the same Download PDF

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Publication number
WO2016012989A2
WO2016012989A2 PCT/IB2015/055631 IB2015055631W WO2016012989A2 WO 2016012989 A2 WO2016012989 A2 WO 2016012989A2 IB 2015055631 W IB2015055631 W IB 2015055631W WO 2016012989 A2 WO2016012989 A2 WO 2016012989A2
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
compressor according
reel
compressor
outer casing
Prior art date
Application number
PCT/IB2015/055631
Other languages
French (fr)
Other versions
WO2016012989A3 (en
Inventor
Maurizio Marini
Original Assignee
Tek Global S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tek Global S.R.L. filed Critical Tek Global S.R.L.
Priority to JP2017524132A priority Critical patent/JP2017522501A/en
Priority to KR1020177004987A priority patent/KR20170069998A/en
Priority to EP15767258.5A priority patent/EP3172437A2/en
Publication of WO2016012989A2 publication Critical patent/WO2016012989A2/en
Publication of WO2016012989A3 publication Critical patent/WO2016012989A3/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/16Auto-repairing or self-sealing arrangements or agents
    • B29C73/166Devices or methods for introducing sealing compositions into articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/40Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
    • B65H75/42Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44Constructional details
    • B65H75/4418Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
    • B65H75/4428Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism
    • B65H75/4431Manual stop or release button
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/06Mobile combinations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14Provisions for readily assembling or disassembling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/34Handled filamentary material electric cords or electric power cables

Abstract

A portable compressor comprising an outer casing (2) having an air intake (3), an electric motor (10) housed in the outer casing (2) and cooled by the air intake (3), a pressure generator (11) driven by the electric motor (10), an electric wire (20) for powering the electric motor (10) and a spring retractor (19) which is preloaded to maintain the electric wire (20) in a retracted condition.

Description

"IMPROVED COMPRESSOR AND KIT FOR REPAIRING AND INFLATING AN INFLATABLE ARTICLE COMPRISING THE SAME"
TECHNICAL FIELD
The present invention relates to a portable compressor and a kit for repairing and inflating inflatable articles comprising said compressor.
BACKGROUND ART
One purpose of the present invention is to provide a portable compressor, meaning a compressor that can be transported without the use of trolleys or wheels, that is inexpensive, compact and easy to use.
This is particularly useful as part of a kit for repairing and inflating inflatable articles supplied in particular to inflate and repair tires.
The purpose of the present invention is achieved with a compressor as claimed in claim 1. BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described with reference to the accompanying drawings, illustrating some non-limiting embodiments thereof and referring:
- Figure 1: to a perspective view of a compressor according to the present invention;
- Figure 2: an exploded perspective view of figure 1. - Figure 3: a cross sectional view on a vertical plane along the line III-III in figure 1 ;
- Figure 4: an exploded perspective view of selected components of the compressor shown in figure 1. BEST MODE FOR CARRYING OUT THE INVENTION
In figure 1 denoted as a whole by reference numeral 1 is a portable compressor preferably for use in combination with a container of a sealant liquid to be injected into an inflatable article. The compressor 1 comprises an outer casing 2 having an air intake 3 and a control panel 4 having for example a screen of a pressure gauge 5 and one or more buttons 6, 7. Advantageously the button 6 starts/stops the compressor 1. The compressor 1 further comprises a tube 8 held by frictional force in a groove 9 defined by the outer casing 2 for example when the compressor is not in use. The tube 8 is connected to an inflatable article (not illustrated) and allows the latter to be inflated when the compressor 1 is started.
The compressor 1 further comprises (figure 2) an electric motor 10, preferably a direct current motor, housed within the outer casing 2, a pressure generator 11 driven by the electric motor 10 and a pneumatic relief valve 12 arranged downstream of the pressure generator 11. Preferably, the pressure generator 11 is a reciprocating pressure generator and comprises a speed reducer 13 connected to the electric motor 10, a connecting rod and crank mechanism 14 and a piston slidingly housed in a cylinder head 15. The cylinder head 15 defines the delivery side of the pressure generator 11 fluidically connected to the tube 8. The pneumatic relief valve 12 is arranged downstream of the delivery side of the pressure generator 11 so as to be able to adjust and in particular reduce the pressure inside the tube 8 when the latter is pressurized and connected to the inflatable article. The compressor 1 further comprises a pressure gauge having the screen 5 and connected to the tube 8 downstream of the delivery side of the pressure generator 11 to allow a user to adjust the pressure of the inflatable article by operating the compressor 1 to increase the pressure and by opening the relief valve 12 using the button 7 to reduce the pressure.
The compressor 1 further comprises an inner structure 16 on which the electric motor 10 and preferably also the pressure generator 11 and the relief valve 12 are mounted. The inner structure 16 has a peripheral portion 17 which defines the groove 9 in the outer casing 2. According to a preferred embodiment of the present invention, the inner structure 16 and the peripheral portion 17 are a single body, more specifically made of plastic material, and the outer casing 2 comprises a shell 18 which defines the air intake 3 and encloses the electric motor 10, the pressure generator 11 and the relief valve 12 with the inner structure 16 and the peripheral portion 17.
According to the present invention, on the opposite side of the electric motor 10 with respect to the inner structure 16, the compressor 1 comprises a retractor 19 for an electric cable 20 that supplies power to the electric motor 10. The retractor 19 is a spring retractor and comprises a reel 21 rotatable around an axis that is transverse, in particular perpendicular, with respect to an axis B of the electric motor 10. In this way the retractor
19 is alongside the electric motor 10 and the pressure generator 11 so that the compressor 1 is compact. For the same reason, the reel 21 is of the disc type so that the electric wire 20 can be wound either in a single turn having an increasing radius, as illustrated in figure 2, or so that the number of overlapping turns is equal to or more than the number of turns side by side along the axis A. By way of example in figure 2 the turns of the electric wire
20 overlap and there are no turns side by side. Turns that are arranged side by side have a substantially constant winding radius. The risk of the electric wire 20 getting tangled up during rewinding is thus reduced to a minimum. The retractor 19 further comprises a spring 22, preferably a band spring, arranged between the reel 21 and the inner structure 16 and preloaded so that the electric wire is maintained in a retracted condition for example as illustrated in figure 2. The band spring 22 has a portion 23 that is rigidly fixed to the reel 21 and a portion 24 that is fixed to the inner structure 16, a plurality of elastic coils being arranged between the portions 23, 24. The elastic coils are loaded when the electric wire 20 is unwound and are unloaded when the electric wire 20 is rewound .
The retractor 19 is enclosed in a shell 25 of the outer casing 2 so that when the electric wire 20 is rewound it is protected and/or concealed in an inner compartment 26 of the casing 2 defined by the shell 25 and by the inner structure 16. The compartment 26 protects the electric motor 10 from any contamination by dirt and/or debris that could become attached to the electric wire 20 when the latter is unwound outside the shell 25.
The retractor 19 further comprises a locking device 27 configured to lock the reel 21 in a desired angular position against the action of the spring 22 when the electric wire 20 is extracted by a length decided upon by the user. The locking device 27 is disconnected preferably manually to allow the electric wire 20 to be completely rewound. According to a preferred embodiment of the present invention, the locking device 27 is a ratchet gear and comprises a ring gear 28 preferably with asymmetrical teeth and a mobile pawl maintained in an engaged position with the ring gear 28 by means of a spring. When the electric wire 20 is extracted the ring gear 28 turns in relation to the pawl. When the user has pulled out the required length but the locking device 27 has been tripped through the action of the spring on the pawl, the angular position of the reel 21 is locked in the direction of winding by the pawl. When the user disconnects the locking device 27, in the example that is illustrated the user disengages the pawl manually by pressing a button, the reel 21 is released and wound up under the action of the spring 22.
The outer casing 2, more specifically the shell 25, defines a seat 29 (illustrated in negative in figure 2) to house and hold in place a power plug 30 connected to the electric wire 20. The electric wire 20 passes from the compartment 26 to the seat 29 through a door P in the outer casing, specifically in the shell 25. In the configuration in which the electric wire 20 is completely rewound, the latter is inside the compartment 26 and the plug 30 is outside the outer casing 2 (figure 4) .
The electric connection between the electric motor 10 and the electric wire 20 is made by brushing connections comprising fixed contacts 31, 32 respectively for the negative and the positive pole and mobile contacts 33, 34 carried by the reel 21. The fixed contacts 31, 32 are connected to the electric motor 10 and are carried by the inner structure 16 and the mobile contacts 33, 34 are connected to the electric wire 20 on the reel 21. The fixed contacts 31, 32 are preferably circular contacts and are electrically isolated from one another.
The rotation of the reel 21 is guided both radially and in the direction parallel to the axis A by means of sliding bearing surfaces. To reduce costs, the bearings are preferably exclusively sliding bearings to avoid the need for ball bearings.
According to a preferred embodiment of the present invention the reel 21 is radially guided by a sliding coupling comprising a pin 35 and a bushing 36. The pin 35 may be a single body or, according to the example of an embodiment in figure 2 and 4, a first portion 35' of the pin 35 is carried by the shell 25 and a second portion 35' ' of the pin 35 is carried by the inner structure 16. To prevent wobbling or swinging movements, the reel 21 comprises a guiding surface 37 which surrounds the spring 22 even in a non-continuous way. The guiding surface 37 is defined by a front shoe and is arranged on the opposite side of a recess 38 in the reel 21 on which the electric wire 20 is wound with respect to a wall 38 of the reel 21 that is transverse with respect to the axis A.
Figure 4 also illustrates an interlocking coupling to lock the portion 24 of the spring 22. Preferably the interlocking coupling comprises one or more projections 39 and the portion 24 is C-shaped to engage with the projection 39. To permit the correct winding of the coils of the spring 22, the portion 24 comes into contact with radial supports arranged along a curved or circular path around the axis A. According to the embodiment illustrated in figure 4, the radial supports have the same shape as the projection 39 so that the projections that are not engaged with the portion 24 act as radial supports.
The advantage of the compressor 1 according to the present invention is as follows.
The retractor simplifies the management of the electric wire, especially after its use.
Lastly it is clear that modifications and variations may be made to the compressor according to the present invention without departing from the scope of protection, as set forth in the appended claims.
To make it portable and, in particular, to make it suitable for repairing and inflating tires, the pressure generator 11 delivers a maximum pressure of 10 bar, preferably of 6 bar for light motor vehicles.
The outer casing may be made of a plastic material obtained by means of a pressing process.
The electric wire 20 and the plug 30 are suitable for transmitting direct electrical current and for being connected for example to the battery of a light motor vehicle, such as a car, or a heavy motor vehicle such as a van or lorry.
The compressor 1 as described herein may be used in combination with a container for a sealant liquid to be injected manually into an inflatable article, for example a tire .
The compressor 1 may be modified and comprise a releasable fluidic and mechanical connection to maintain the container of sealant liquid in a position for use and, at the same time in at least one configuration for use, fluidically connected to the delivery side of the pressure generator 11. The fluidic and mechanical connection may comprise a smaller seat to house an appendix of the sealant container or a larger and deeper seat to house the container in its entire height or in almost its entire height in the position for use. In both of these embodiments, the sealant liquid is injected by means of the pressure and/or flow of pressurized air generated by the pressure generator 11.
A fan 40 or other cooling system, preferably an air cooling system, is connected to the electric motor 10 to prevent overheating during use through the forced conduction of air inside the outer casing 2 through the air intakes 3.
According to the present embodiment the axis A is substantially vertical in the normal position in which the compressor is placed (figure 1) . It is possible, in particular when the compressor is used in combination with a container for a sealant liquid housed in a deep seat, for the retractor 19 to be on one side of the compressor and for the axis A to be substantially horizontal.

Claims

1. A portable compressor comprising an outer casing (2) having an air intake (3), an electric motor (10) housed in the outer casing (2) and cooled by the air intake (3), a pressure generator (11) driven by the electric motor (10), an electric wire (20) for powering the electric motor (10) and a spring retractor (19) which is preloaded to maintain the electric wire (20) in a retracted condition.
2. The compressor according to claim 1, characterized in that the spring retractor (19) comprises a reel (21) rotatable around a first axis (A) transverse with respect to a second rotation axis (B) of the electric motor (10) .
3. The compressor according to claim 2, characterized in that the reel (21) comprises a wall (39) transverse to the first axis (A) and a band spring (22) arranged on the opposite side with respect to a recess (38) of the reel (21) within which the electrical wire (20) can be wound.
4. The compressor according to any one of the preceding claims, characterized in that the spring retractor (19) is protected by an inner compartment (26) delimited by the outer casing (2) towards the outside.
5. The compressor according to claim 4, characterized in that the outer casing (2) comprises a shell (25) defining in part the compartment (26), and a seat (29) for retaining a power plug (30) connected to the electric wire (20) .
6. The compressor according to any one of the preceding claims, characterized in that it comprises an inner structure (16) on which at least the electric motor (10) and the pressure generator (11) are mounted and in that the reel (21) is arranged on the opposite side of the electric motor (10) with respect to the inner structure (16) .
7. The compressor according to claim 6, characterized by comprising fixed electrical contacts (31, 32) carried by the inner structure (16) and connected to the electric motor (10) and in that the spring retractor (19) comprises mobile electrical contacts (33, 34) brushing fixed electrical contacts (31, 32) for electrically connecting the electric wire (20) to the electric motor (10) .
8. The compressor according to any one of the preceding claims, characterized in that the reel (21) is of disc type .
9. The compressor according to any one of the preceding claims, characterized in that the spring retractor (19) is guided in rotation by way of at least a front shoe (37) .
10. A kit for repairing and inflating inflatable articles comprising a compressor according to any one of the preceding claims and a container for a sealant liquid that can be injected into an inflatable article to be repaired.
PCT/IB2015/055631 2014-07-25 2015-07-24 Improved compressor and kit for repairing and inflating an inflatable article comprising the same WO2016012989A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017524132A JP2017522501A (en) 2014-07-25 2015-07-24 Improved compressor and inflatable article repair and expansion kit comprising the same
KR1020177004987A KR20170069998A (en) 2014-07-25 2015-07-24 Improved compressor and kit for repairing and inflating an inflatable article comprising the same
EP15767258.5A EP3172437A2 (en) 2014-07-25 2015-07-24 Improved compressor and kit for repairing and inflating an inflatable article comprising the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2014A000597 2014-07-25
ITTO20140597 2014-07-25

Publications (2)

Publication Number Publication Date
WO2016012989A2 true WO2016012989A2 (en) 2016-01-28
WO2016012989A3 WO2016012989A3 (en) 2016-03-17

Family

ID=51799253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/055631 WO2016012989A2 (en) 2014-07-25 2015-07-24 Improved compressor and kit for repairing and inflating an inflatable article comprising the same

Country Status (4)

Country Link
EP (1) EP3172437A2 (en)
JP (1) JP2017522501A (en)
KR (1) KR20170069998A (en)
WO (1) WO2016012989A2 (en)

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US10850459B2 (en) 2016-07-27 2020-12-01 The Yokohama Rubber Co., Ltd. Puncture repair kit

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JPS5980355U (en) * 1982-11-20 1984-05-30 ブラザー工業株式会社 Cord winding device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10850459B2 (en) 2016-07-27 2020-12-01 The Yokohama Rubber Co., Ltd. Puncture repair kit
DE112017003798B4 (en) 2016-07-27 2023-06-15 The Yokohama Rubber Co., Ltd. hole repair kit

Also Published As

Publication number Publication date
JP2017522501A (en) 2017-08-10
WO2016012989A3 (en) 2016-03-17
EP3172437A2 (en) 2017-05-31
KR20170069998A (en) 2017-06-21

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