WO2018104742A1 - Accouplement de transmission - Google Patents

Accouplement de transmission Download PDF

Info

Publication number
WO2018104742A1
WO2018104742A1 PCT/GB2017/053688 GB2017053688W WO2018104742A1 WO 2018104742 A1 WO2018104742 A1 WO 2018104742A1 GB 2017053688 W GB2017053688 W GB 2017053688W WO 2018104742 A1 WO2018104742 A1 WO 2018104742A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
engagement
male
female
teeth
Prior art date
Application number
PCT/GB2017/053688
Other languages
English (en)
Inventor
Aaron James WILCOCK
David FARAM
Original Assignee
Kenwood Limited
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 Kenwood Limited filed Critical Kenwood Limited
Publication of WO2018104742A1 publication Critical patent/WO2018104742A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08—Driving mechanisms
    • A47J43/085—Driving mechanisms for machines with tools driven from the lower side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/31—Couplings
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08—Driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/104—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting only by friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections

Definitions

  • the present invention relates to a drive coupling for a blender or other food processor. More particularly, the present invention relates to a coupling arranged to reduce vibration in a blender.
  • Blenders are often removable containers having a blender tool for coupling to a blender drive outlet of a powered base unit.
  • the drive outlet drives the blender tool in rotational motion in order to blend, cut and/or mix ingredients.
  • the blender container can be removed for dispensing the processed ingredients and for cleaning.
  • the transmission of the rotational force between the base unit and the blender tool can lead to excessive vibration of the blender, especially at the point of coupling between the container and the drive outlet. This can result in excessive wear on the blender tool and drive outlet, as well as being noisy and unpleasant for the user.
  • vibrations can be exacerbated in several ways, including misalignment (due to tolerance and manufacturing issues, it is very difficult to achieve a sufficiently close alignment of the male and female connectors when the parts are made for user assembly), being run at high speed (operation speed of blenders is typically more than 10,000 RPM and may be more than 30,000 RPM) and reduced/uneven contact points.
  • aspects and/or embodiments seek to provide an improved coupling for use with a food processor such as a blender.
  • a detachable drive coupling for a food processor comprising: a male coupling member and a female coupling member provided respectively on detachable components of the food processor, the coupling members comprising cooperating engagement elements for transmitting drive; and a resilient member arranged to be located in a radial gap between the male and female coupling members when coupled together.
  • the resilient member acts to dampen vibrations caused by the drive, and thus reduce wear on the coupling, as well as reducing or eliminating noise-generating contacts between the male and female engaging members. It can also provide a firm, resilient, frictional contact between the coupling members while maintaining ease of fit for a use. Moreover the resilient member allows the coupling members to remain aligned once connected.
  • the male coupling member may be a drive connection for a processor such as a blender, which extends from a lower surface of a food container such as the blender goblet
  • the female coupling member may be a drive outlet of a processor base, such as the base unit of a blender.
  • the resilient member may be arranged between a body portion of the male coupling member and a chamber portion of the female coupling member, from which the discrete engagement elements extend, spaced around the members, the body portion of the male coupling member and the chamber portion of the female coupling member preferably being substantially circular in cross-section, for example cylindrical.
  • the resilient member may form a cushion between the outer wall of the male member and the inner wall of the female member, at least in the spaces between the engagement elements.
  • the engagement elements which may be correspondingly shaped formations such as splines or teeth and associated recesses, preferably extend from the body portion and chamber portion respectively along at least a part of the length of each member, for example being provided on at least a portion of respective axially extending surfaces of each of the coupling members, together to form an axially extending engagement region of the coupling.
  • engagement teeth may be formed along the length of the male coupling member, and corresponding recesses may be provided on the female coupling member.
  • the resilient member may be located at least partially in the engagement region of the coupling, for example in an axial gap in the engagement elements.
  • At least a part of the male coupling member and/or the female coupling member may be formed of a metallic material.
  • the engagement elements or teeth, and/or the corresponding recesses are preferably formed of metal such as case-hardened steel, stainless steel or aluminium for good transmission of drive force.
  • the resilient member may be seated in a recessed groove formed in the engagement region, between first and second engaging portions, which may be a groove in the teeth or splines, or may be a groove in the body portion or chamber portion.
  • the recessed groove may for example be approximately half way along the engagement region, and retains the resilient member in position, as well as ensuring the resilient member interposes between the two coupling members.
  • the recessed groove is formed on the male engagement member.
  • Engagement teeth are preferably provided in at least one or both of the engagement portions.
  • the engagement teeth may extend from both the first engaging portion and the second engaging portions, and may be aligned.
  • the teeth may each be shaped with a drive face arranged to engage against a corresponding drive face of a recess.
  • the drive faces may for example be flat faces arranged to be aligned in use. Engagement teeth, with corresponding recesses, provide a secure engagement formation for the transmission of drive through the coupling.
  • the resilient member is a flexible annular member, such as an O-ring.
  • the resilient member is preferably manufactured from artificial rubber such as nitrile rubber.
  • a food processor or blender comprising the coupling as defined above. Whilst the invention has been described in the field of domestic food processing and preparation machines, it can also be implemented in any field of use where efficient, effective and convenient preparation and/or processing of material is desired, either on an industrial scale and/or in small amounts.
  • the field of use includes the preparation and/or processing of: chemicals; pharmaceuticals; paints; building materials; clothing materials; agricultural and/or veterinary feeds and/or treatments, including fertilisers, grain and other agricultural and/or veterinary products; oils; fuels; dyes; cosmetics; plastics; tars; finishes; waxes; varnishes; beverages; medical and/or biological research materials; solders; alloys; effluent; and/or other substances.
  • the invention described here may be used in any kitchen appliance and/or as a standalone device.
  • This includes any domestic food-processing and/or preparation machine, including both top-driven machines (e.g., stand-mixers) and bottom-driven machines (e.g., food processors). It may be implemented in heated and/or cooled machines.
  • the invention may also be implemented in both hand-held (e.g., hand blenders) and table-top (e.g., blenders) machines. It may be used in a machine that is built-in to a work-top or work surface, or in a stand-alone device.
  • the invention can also be implemented as a stand-alone device, whether motor-driven or manually powered.
  • Figure 1 illustrates a cross sectional view of an embodiment of a blender coupling
  • Figure 2 illustrates a side view of the male engaging member
  • Figure 3 illustrates a bottom view of the male engaging member
  • Figure 4 illustrates a top view of the engaging members in use. Specific Description
  • FIG. 1 illustrates a cross sectional view of an embodiment of a blender coupling.
  • the coupling comprises a male engaging member 1 and a female engaging member 3.
  • the male engaging member 1 can form part of a drive outlet of a blender base unit or stand, while the female engaging member can form a part of the drive connection for a removable blender container, or vice versa.
  • the coupling thus allows a blender tool to be removably coupled to a blender drive outlet.
  • the female engaging member 3 comprises a chamber portion 5 for receiving the male member, which is substantially circular in cross-section, for example being substantially cylindrical, and has engagement formations comprising a plurality of recesses 7 in the chamber 5 wall extending axially along the wall for receiving engagement teeth of the male engaging member to form an engagement portion of the coupling.
  • the male engaging member 1 comprises engagement formations in the form of engagement teeth formed axially along a body portion thereof and together forming a first engaging portion 9 and a second engaging portion 1 1 on either side of an axial gap forming a groove 17.
  • the engaging portions comprise a plurality of engagement teeth 13 extending substantially radially outwardly from a central axis 15 of the male engagement member 1 .
  • the number of engagement teeth 13 on each of the engaging portions 9 and 1 1 is four, though any number are in principle possible.
  • the recessed groove 17 contains a resilient member 19 in the form of an O-ring that partially protrudes radially from the recessed groove 17 into a radial gap between the axial walls of the male and female member, and can be in the form of a compressible seal member.
  • the groove is situated approximately half way down the axis 15 of the engaging part of the male engaging member such that the height of the upper 9 and lower 1 1 engaging portions is approximately equal.
  • the recessed groove 17 acts to prevent the O-ring slipping off the male engaging member. It also acts to ensure that the O-ring interposes between the central body of the male engaging member 1 and the chamber 5 wall of the female engaging member 3.
  • the O-ring is preferably made of an artificial rubber such as nitrile rubber, but may also be natural rubber or a suitable thermoplastic elastomer.
  • the first engaging portion 9 terminates in a lip 21 that acts to prevent the male engaging member 1 from being pushed too far into the chamber 5 of the female engaging member 3.
  • the male engaging member 1 is inserted into the female engaging member 3 such that the engagement teeth 13 interlock with at least some of the recesses 7 of the chamber 5 wall of the female engaging member 3.
  • the flexible seal 19 acts to guide the male 1 and female 3 engaging members into an accurate alignment during insertion.
  • the flexible seal 19 may contact both the chamber 5 wall and the body of the male engaging member 1 once it has been inserted into the female engaging member 3, acting to centre the male member 1 , and to provide a firm, frictional, resilient contact between the male engaging member 1 and the female engaging member 5. In this way, noise generating metal-to-metal contacts between the two engaging members are reduced or eliminated and cushioned by the flexible seal, and vibrations are dampened.
  • the flexible seal can be manufactured from an artificial rubber, such as nitrile rubber, but may alternatively be manufactured from a natural rubber or a suitable thermoplastic elastomer.
  • Rotational motion is transmitted from the engaging member driven by the blender drive outlet to the other engaging member via the engagement teeth 13 and the recesses 7 in the chamber 5 wall.
  • Either of the male engaging member 1 or the female engaging member 3 can be driven directly by the drive outlet, with the non-directly driven member being attached to the blender tool mounted in the removable blender container.
  • the male engaging member 1 is shown in more detail in Figures 2 and 3.
  • FIG 2 illustrates a side view of the male engaging member.
  • the male engaging member 1 is divided into two engaging portion 9 and 1 1 , each of which comprises a plurality of engagement teeth 13 extending from a central body 23 and 25, which is preferably substantially circular in cross-section, for example cylindrical, in the radial direction from a central axis 15.
  • a compressible seal 19 seated in a recessed grove of the male engagement member 1 divides the engaging portion into the two engaging parts 9 and 1 1.
  • Figure 3 illustrates a bottom view of the male engaging member.
  • the recessed groove 17 divides the male engaging member 1 into a first 9 and second 1 1 engaging portion.
  • Engagement teeth 13 extend from a central body of each of the engaging portions 9 and 1 1 in a substantially radial direction.
  • each engaging portion 9 and 1 1 comprises four engagement teeth 13.
  • the four engagement teeth 13 on each engaging portion 9 and 1 1 are arranged at right angles to each other around the central axis 15 of the male engaging member.
  • the engagement teeth 13 on each of the portions 9 and 1 1 are aligned with the engaging teeth 13 on the other portion.
  • the leading edge of the engagement teeth 13 is shaped to match the faces of the recesses in the female engaging member when in use. This acts to prevent point loading when the coupling is being driven by the drive outlet of a food processor.
  • Figure 4 illustrates a cross sectional top view of an embodiment of the blender coupling.
  • the male engagement member 1 is inserted into the female engaging member 3 such that the leading faces of the engagement teeth 13 are in contact with faces of the recesses 7.
  • the male engagement member 1 has a reduced number of engagement teeth 13 compared to the number of recesses in the female engaging member 3 to reduce the potential for tolerance differences and maintain a more uniform contact pattern between the two parts.
  • the male engaging member 1 has four engagement teeth 13 on each engaging portion 9 and 1 1 , with the female engaging member 3 having eight recesses 7 arranged at forty-five degrees to each other around the chamber wall of the female engaging member. Maintaining more recesses 7 than there are engagement teeth 13 allows the male 1 and female 3 engaging members to be fitted together more easily, though an equal number of recesses 7 and engagement teeth 13 is also possible.
  • the male engaging member has four engagement teeth on each of its engaging portions.
  • each engaging portion can have four engagement teeth, with the female engaging member having 8 recesses (as described above), but with the engagement teeth on each portion arranged in pairs separated by forty-five degrees, with the other pair on the other side of the engaging member.
  • the engagement teeth on each portion in the examples described above are also aligned with the engagement teeth on the other portion of the male engagement member, such that corresponding engagement teeth on each portion are inserted into the same recess in the female engaging member.
  • the engagement teeth on each portion can be offset from each other so that they engage different recesses in the chamber wall of the female engaging member.
  • the engagement teeth on the first portion can be offset from those on the second portion by forty-five degrees, such that they engage with alternating recesses to each other.
  • engagement teeth can be provided on only one of the engaging portions.
  • the other engaging portion can then, in some examples, be equipped with additional flexible seals that engage the female engaging member.
  • the engagement teeth can be manufactured from metal, such as: case-hardened steel; stainless steel; or aluminium for example, to ensure a good transmission of motive force from the directly driven coupling member to the receiving coupling member.
  • the resilient member will then act to damp or eliminate vibrations and/or noise that results as a use of using metal engagement members.
  • the flexible seal can be an O-ring, as described above, but may alternatively be any flexible and/or compressible seal or seals known in the art. It may be formed from multiple disjoint parts arranged in the recessed groove of the male engaging member.
  • the male engaging member can also alternatively comprise more than one recessed groove containing a compressible seal, such that the male engaging member is divided into more than two engaging parts. This can help to keep the male engaging member centred in the chamber of the female engaging member in use, as well as providing additional vibrational damping.
  • the coupling can be used to transmit power from the drive outlet of a blender power unit to a blender tool.
  • the power unit may be a base stand that sits on a work surface, or may be a hand-held unit.
  • the coupling can alternatively be used in a food processor to transmit power from a drive outlet in the food processor base unit to a food processing tool, for example for mixing ingredients.
  • any feature in one aspect of the invention may be applied to other aspects of the invention, in any appropriate combination.
  • method aspects may be applied to system aspects, and vice versa.
  • any, some and/or all features in one aspect can be applied to any, some and/or all features in any other aspect, in any appropriate combination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

L'invention concerne un accouplement de transmission démontable pour un robot de cuisine, comprenant : un élément d'accouplement mâle (1) et un élément d'accouplement femelle disposés respectivement sur des composants démontables du robot de cuisine, les éléments d'accouplement (1, 3) comprenant des éléments de prise coopérants destinés à une transmission de mouvement ; et un élément élastique (19) disposé pour être situé dans un espace radial entre les éléments d'accouplement mâle et femelle lorsqu'ils sont accouplés.
PCT/GB2017/053688 2016-12-07 2017-12-07 Accouplement de transmission WO2018104742A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1620795.3A GB2560489B (en) 2016-12-07 2016-12-07 Drive coupling
GB1620795.3 2016-12-07

Publications (1)

Publication Number Publication Date
WO2018104742A1 true WO2018104742A1 (fr) 2018-06-14

Family

ID=58159845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2017/053688 WO2018104742A1 (fr) 2016-12-07 2017-12-07 Accouplement de transmission

Country Status (2)

Country Link
GB (1) GB2560489B (fr)
WO (1) WO2018104742A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11974699B2 (en) 2021-04-05 2024-05-07 Conair Llc Drive coupling for a food processing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992715A (en) * 1959-08-27 1961-07-18 Oster Mfg Co John Readily separable torque transmitting coupling
EP1702545A1 (fr) * 2005-03-18 2006-09-20 Whirlpool Corporation Dispositif d'accouplement d'arbres pour appareil mélangeur
EP2220981A2 (fr) * 2009-01-24 2010-08-25 Vorwerk & Co. Interholding GmbH Appareil ménager fonctionnant avec un moteur électrique
EP2407071A1 (fr) * 2010-07-13 2012-01-18 Vorwerk & Co. Interholding GmbH Appareil ménager fonctionnant avec un moteur électrique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7566186B2 (en) * 2005-05-20 2009-07-28 Vita-Mix Corporation Drive coupler for a blender

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992715A (en) * 1959-08-27 1961-07-18 Oster Mfg Co John Readily separable torque transmitting coupling
EP1702545A1 (fr) * 2005-03-18 2006-09-20 Whirlpool Corporation Dispositif d'accouplement d'arbres pour appareil mélangeur
EP2220981A2 (fr) * 2009-01-24 2010-08-25 Vorwerk & Co. Interholding GmbH Appareil ménager fonctionnant avec un moteur électrique
EP2407071A1 (fr) * 2010-07-13 2012-01-18 Vorwerk & Co. Interholding GmbH Appareil ménager fonctionnant avec un moteur électrique

Also Published As

Publication number Publication date
GB201620795D0 (en) 2017-01-18
GB2560489A (en) 2018-09-19
GB2560489B (en) 2022-08-31

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