EP2421682A2 - Tierschermaschine - Google Patents
TierschermaschineInfo
- Publication number
- EP2421682A2 EP2421682A2 EP10714254A EP10714254A EP2421682A2 EP 2421682 A2 EP2421682 A2 EP 2421682A2 EP 10714254 A EP10714254 A EP 10714254A EP 10714254 A EP10714254 A EP 10714254A EP 2421682 A2 EP2421682 A2 EP 2421682A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- animal
- housing
- output shaft
- shearing
- machine according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000010008 shearing Methods 0.000 title claims abstract description 48
- 241001465754 Metazoa Species 0.000 title claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000010970 precious metal Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/24—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers specially adapted for shearing animals, e.g. sheep
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
Definitions
- the invention relates to an animal clipper according to the preamble of claim 1.
- DE 11 96 994 A describes an animal clipper which is driven by an electric motor.
- the housing of the device which also serves as a handle, has a shaving head at the front end.
- the shaving head consists of a fixed and a movable cutting comb, which oscillates back and forth in relation to the fixed cutting comb.
- the movable cutting comb is held and driven by a fork, which is movable around a joint back and forth.
- the drive of the movable cutting comb takes place in the meantime well-known way by the use of an eccentric. With the help of the eccentric, the rotational movement of a driving electric motor can be converted into the desired oscillating movement of the shaving head.
- the eccentric engages in a slot of the movably mounted fork.
- the drive torque of the electric motor used is transmitted via a reduction gear to the eccentric.
- a spur gear is used for this purpose.
- the drive unit consisting of electric motor, gearbox, eccentric and flywheel is completely housed within the housing of the animal clipper.
- the electric motor is mounted in the housing in such a way that the shaft of the electric motor is arranged in the direction of the housing longitudinal axis.
- Drive shaft and output shaft of a spur gear parallel spaced to each other.
- the oscillation axis of the output shaft of the spur gear drive connected Excenters is aligned approximately perpendicular to the fork connected to the movable cutting comb.
- the shaft of the electric motor is usually aligned so that it runs obliquely to the housing longitudinal axis.
- the worm wheel connected to the output shaft and the eccentric is driven by the electric motor via a worm connected to the motor shaft.
- the axis of the eccentric connected to the worm wheel is approximately perpendicular to the housing longitudinal axis and thereby extends approximately parallel to the swing axis of a rocking lever, which is now used instead of the fork described in DE 11 96 994 A to drive the movable cutting comb of the shaving head.
- Oscillating lever and cutting comb are not necessarily firmly connected to each other, but are usually in entraining engagement.
- worm gears are also relatively simple. However, there are sometimes significant problems with the use of a worm gear. Thus, worm gears have a high sliding friction, resulting in high wear and high heating. As a result, the efficiency of the entire drive unit is relatively poor. Excessively high temperatures cause equipment not to be able to operate permanently and therefore to be interrupted because the devices are used both for the see as well as get too hot for the animal. Due to the low efficiency, the realization of battery-operated animal clippers is also difficult, since the battery life of a battery of acceptable size for the shearing process is insufficient.
- the use of a planetary gear in the animal clipper according to the invention offers various advantages.
- the transmission operates with a high efficiency which is significantly improved compared to the transmissions hitherto used in the prior art. On battery operation, this allows significantly longer uninterrupted work cycles.
- Associated with the high efficiency is also a low, substantially negligible, hardly measurable heating, which allows a long uninterrupted working with the shearing machine according to the invention.
- the animal clipper according to the invention requires significantly reduced drive power.
- the planetary gear used in the invention can also be realized with an extremely small space and thus space-saving housed in the housing of the animal clipper according to the invention.
- the animal clipper of the invention differs from those of the prior art by a lower noise.
- the output shaft of the planetary gear can be arranged in parallel, in particular coaxially, to the shaft of the electric motor.
- housing shells can be used by worm gear driven shearing machines, whose internal structure is only slightly modify. The external appearance of an existing and proven product can thus be maintained if necessary. Also, many more parts of an existing animal razor design can continue to be used.
- planetary gear which are designed as single-stage gearbox.
- a planetary gear as a reduction gear allows the shaft of the electric motor and the output shaft of the planetary gear are arranged in particular coaxially. This facilitates the integration of the engine and reduction gear to a structural unit, a motor / gear unit.
- the motor / gear unit is mounted by means of one or more elastically deformable bearing elements in the housing, or the two housing shells typically used.
- rubber rings can be used here, in particular in the form of O-rings.
- the elastically deformable bearing elements on the one hand, the operating noise of the animal clipper during operation further reduced, and on the other hand vibrations that are uncomfortable for the operator of the animal clipper during operation, almost impossible.
- the motor / gear unit comprises a flange on which at least one rubber ring is arranged.
- the flange is preferably formed so that it serves as a spacer between the planetary gear and the housing.
- the flange is arranged in the region of the planetary gear and is slightly wider in its circumference than the planetary gear itself.
- Between the gearbox flange and the housing is at least one of the rubber rings used for mounting the motor / gear unit in the housing.
- the gear flange thus serves as a spacer between planetary gear and housing. This allows air circulation between the housing and planetary gear or electric motor. This serves to ensure that the housing, which serves as a handle of the animal clipper, is not partially heated up.
- a reduction ratio in the range of about 2: 1 to 8: 1, more preferably about 4: 1 to 5: 1 is preferably selected.
- a reduction ratio of about 4.4: 1 has proved to be favorable.
- the shearing machine according to the invention can be combined with differently designed shaving heads.
- shaving heads in which the drivable shearing blade is driven to oscillate to a particular linear movement, wherein the output shaft of the planetary gear are coupled via an eccentric and a rocker arm with the drivable shearing blade.
- the rocker arm is a front end which is coupled to the drivable shearing blade, and having a rear end which comprises a sliding member with which the eccentric is engaged.
- the rocker arm is rotatably mounted on the housing in a region between the front and the rear end about a swing axis.
- the output shaft of the planetary gear is arranged perpendicular to the swing axis of the eccentric. This ensures on the one hand a compact design, on the other hand, the friction losses, which are generated between the eccentric and the rocker arm and in the rocker arm about the swing axis, can be kept low.
- rocker arm The more precise the rocker arm is mounted, the lower the friction losses in the transmission of power from the drive shaft of the reduction gear to the drivable shearing blade and the better the shearing performance of the shaving head.
- the rocker arm has a key function in power transmission and is extremely stressed.
- the rocker arm is preferably made of a low-wear material, preferably a steel alloy, for example, a steel alloy with Cu and Mo as alloying components.
- the steel alloys preferably have a hardness of about 60 Rockwell.
- the rocker arm is produced as a sintered metal part, preferably sintered metal alloys of the DIN type SINT D39.
- rocker arm with a thin plastic coating.
- plastics polymer materials based on highly fluorinated hydrocarbons, for example PTFE and TFE copolymers, are particularly suitable.
- a groove into which a lock washer can be latched may be provided on the swing axle, a groove into which a lock washer can be latched.
- the rocker arm on the swing axle can be kept substantially free of axial play. This has a positive effect on the sectional view of the shaving head, so that with a minimized expenditure of time an optically optimal shearing result can be achieved.
- the output shaft of the planetary gear is aligned parallel to the longitudinal axis of the housing. It is particularly advantageous if the output shaft of the planetary gear is aligned substantially coaxially to the longitudinal axis of the housing. This also contributes to a compact design of the animal clipper and thus ensures that existing housing shells can be used by animal clippers with worm gear.
- the eccentric is formed by an eccentric cam, in particular a cylindrical eccentric cam whose axis is parallel to the output shaft of the transmission.
- the sliding element of the rocker arm in which engages the connected to the output shaft of the planetary gear eccentric, formed by a perpendicular to the output shaft of the planetary gear and parallel to the swing axis of the rocker arm groove.
- the surfaces of the groove walls are convexly curved, in particular cylindrical, so that the groove walls are only in one point in contact with the preferably cylindrical eccentric cam. Due to the clearance between the eccentric and groove a contact arises depending on the direction of vibration only between the eccentric cam and one of the two groove walls. The friction losses between eccentric and rocker arm are thus minimized, which has a further increase in efficiency and even lower heating of the animal clipper during operation result.
- the shaving head is held to the housing via a releasable connection.
- the output shaft of the reduction gear is releasably coupled to the drivable shearing blade.
- the front end of the rocker arm and the drivable shearing blade are engaged with each other.
- a DC motor is used as an electric motor, wherein the DC motor preferably at speeds in the range of about 5,000 to 17,000 min "1 , preferably about 8,000 to 13,000 min “ 1 , more preferably in the range of about 9,000 to 11,000 min "1 , is operable.
- Particularly preferred DC motors are equipped with stainless steel brushes. This ensures a long service life.
- brushless motors can be used, which are even more cost-effective to assess.
- the animal clipper according to the invention is particularly suitable for accumulator operation and therefore preferably comprises an energy source in the form of a rechargeable battery, which is preferably exchangeable.
- a rechargeable battery which is preferably exchangeable.
- Particularly suitable are Li-ion batteries, since they have a high energy density.
- Figure 1 is a perspective view of an animal clipper according to the invention.
- Figure 2 is a perspective view of the animal clipper of Figure 1 with the housing upper shell lifted;
- FIG. 4 shows a partial plan view of the animal clipper with the housing upper shell of FIG. 2 removed.
- the housing 2 of the animal clipper 1 consists of a housing lower shell 4 and a housing upper shell 5.
- the housing 2 is ergonomically shaped waisted and serves as a handle, at the front end of the shaving head 6 is mounted.
- the shaving head 6 is also aligned according to ergonomic aspects of the lower housing shell 4 to the upper housing shell 5 slightly sloping rising.
- the fixed shearing blade 7 of the shaving head 6 is fixed, but releasably connected to the housing 2.
- the movable shearing blade 8 arranged above the stationary shearing blade 7 can be moved back and forth in a known manner in a linear movement relative to the stationary shearing blade 7.
- the switch with the reference numeral 22 and the lid of the battery compartment with the reference numeral 23 are provided.
- FIG. 2 shows a further oblique view of the animal clipper 1 according to the invention from FIG. 1, wherein the upper housing shell is not shown in FIG is to allow an insight into the interior of the animal clipper 1.
- the lid 23 of the battery compartment 24 is also omitted.
- the movable shearing blade 8 is driven by the drive unit 21, which consists of the components electric motor 9, planetary gear 10, an eccentric and the rocker arm 12.
- the drive unit 21 is shown separately once again in FIG. There, the eccentric is provided with the reference numeral 11.
- the rocker arm 12 is rotatably supported via the swing axle 15, which is formed by a shaft, both in the housing lower shell 4 and in the housing upper shell 5, not shown, so that it can oscillate about the swing axle 15 back and forth.
- the oscillating axis 15 is aligned perpendicular to the longitudinal axis 3 of the housing 2 and is located approximately in the middle of the rocker arm 12.
- the movable shearing blade 8 (hereinafter also referred to as the top plate) is in entraining engagement with the first front end 13 of the rocking lever 12.
- the oscillating lever 12 is driven in the region of the second lower end 14 by the eccentric 11 shown in FIG.
- the eccentric 11 is seated on the output shaft 19 of the planetary gear 10, which is connected to the electric motor 9 to a motor / gear unit.
- the shaft of the electric motor 9 is aligned coaxially with the drive shaft and the output shaft 19 of the planetary gear 10.
- Electric motor 9 and planetary gear 10 have the same outer diameter and thereby form a very compact motor / gear unit.
- a flange 20 is attached, which is for example produced as a diecast part.
- the motor / gear unit is mounted in the housing via two rubber O-rings 17.
- a rubber O-ring 17 is located between the housing and the flange 20.
- the flange 20 forms a spacer of the planetary gear 10 to the housing, wherein an air circulation around the planetary gear 10 and the electric motor 9 is made possible.
- the consisting of planetary gear 10 and electric motor 9 motor / gear unit is coaxially aligned with the longitudinal axis 3 of the housing 2, whereby an extremely slim and ergonomically shaped Housing shape is possible.
- the battery compartment of the animal clipper 1 according to the invention is provided with the reference numeral 24.
- FIG. 3 shows the drive unit 21 of the animal clipper according to the invention consisting of electric motor 9, planetary gear 10, eccentric 11 and oscillating lever 12 from FIGS. 1 and 2 in an exploded oblique view.
- the eccentric 11 of the drive unit 21 is formed by a cylindrical eccentric cam whose axis extends parallel and eccentrically to the axis of the output shaft 19 of the planetary gear 10.
- the eccentric cam is rotatably mounted on the output shaft 19 about its axis.
- the eccentric cam engages in a groove 16 of the rocker arm 12.
- the rocker arm 12 has been moved forward along the axis of the output shaft 19.
- the groove 16 is inserted into a projection 18 in the region of the rear end 14 of the rocking lever 12, and perpendicular to the axis of the output shaft 19 and parallel to the swing axis 15.
- the walls of the groove 16 have cylindrical surfaces, whereby between the eccentric cam and the groove walls in each case only one point contact arises.
- the eccentric cam is approximately as wide as the groove 16, but there is a clearance fit between the eccentric cam and groove 16.
- the eccentric cam rolls on the cylindrical walls of the groove 16, since it is mounted rotatably about its own axis on the output shaft 19.
- the motor / gear unit composed of electric motor 9 and planetary gear 10 can be mounted non-rotatably in the housing of the animal clipper by the octagonal and slightly rounded design of flange 20 without further fastening means.
- the rocker arm 12 drives the shaving head 6, by engaging in the corresponding recess 26 provided the top plate 8 of the shaving head 6 and the Upper plate 8 in the horizontal back and forth in rapid succession (horizontal oscillation).
- the target speed of this process is, for example, 2,300 strokes per minute ("strokes per minute").
- the rocker arm 12 is the medium which transmits the power of the drive unit of the shearing machine directly to the shaving head 6.
- the more precise the rocker arm 12 can perform this power transmission the lower the friction losses that can occur in this process, and the better the cutting performance of the shaving head 6.
- the rocker arm 12 is extremely stressed by this key function in power transmission. For this reason, the rocker arm 12 is made of a virtually wear-free material. The best results in continuous operation were achieved with a special sintered metal alloy of the DIN type SINT D39.
- the cutting performance and thus the sectional image of the shorn animal coat depends primarily on the shaving head used. That is, the better the shaving head 6 can work, the better the result, both from a visual and a temporal point of view.
- the time required to achieve a particular shearing result is a decisive criterion for the professional user, especially with regard to the economic efficiency of the shearing machine.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- Animal Husbandry (AREA)
- Housing For Livestock And Birds (AREA)
- Dry Shavers And Clippers (AREA)
- Shearing Machines (AREA)
- Scissors And Nippers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009017517.2A DE102009017517B4 (de) | 2009-04-20 | 2009-04-20 | Tierschermaschine |
DE200910045545 DE102009045545A1 (de) | 2009-10-09 | 2009-10-09 | Tierschermaschine |
PCT/EP2010/054940 WO2010121941A2 (de) | 2009-04-20 | 2010-04-15 | Tierschermaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2421682A2 true EP2421682A2 (de) | 2012-02-29 |
EP2421682B1 EP2421682B1 (de) | 2014-10-15 |
Family
ID=42270504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10714254.9A Active EP2421682B1 (de) | 2009-04-20 | 2010-04-15 | Tierschermaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US8769824B2 (de) |
EP (1) | EP2421682B1 (de) |
ES (1) | ES2525348T3 (de) |
WO (1) | WO2010121941A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4082729A1 (de) * | 2021-04-27 | 2022-11-02 | Wuhan Shembao Pet Products Manufacturing Co., Ltd. | Von einem bürstenlosen aussenläufermotor angetriebener, elektrischer haarschneider |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2421682B1 (de) * | 2009-04-20 | 2014-10-15 | Aesculap Suhl GmbH | Tierschermaschine |
US9346179B2 (en) * | 2011-11-11 | 2016-05-24 | Sunbeam Products, Inc. | Electric hair cutting apparatus |
US10093029B2 (en) | 2012-07-31 | 2018-10-09 | Koninklijke Philips N.V. | Hair clipping device |
RU2638717C2 (ru) | 2012-07-31 | 2017-12-15 | Конинклейке Филипс Н.В. | Устройство для стрижки волос |
US9038276B2 (en) * | 2013-03-15 | 2015-05-26 | Wahl Clipper Corporation | Hair clipper with a rotary motor vibration and noise damper |
DE102015111690A1 (de) * | 2015-07-17 | 2017-01-19 | Wahl Gmbh | Schneidsatz einer Haarschneidemaschine mit Haartransportelement und Haarschneidemaschine mit Haartransportelement |
US10821617B2 (en) * | 2016-01-14 | 2020-11-03 | Nathan Hitson | Animal shears/clippers |
US10137581B2 (en) * | 2016-11-08 | 2018-11-27 | Andis Company | Drive for a hair cutting apparatus |
EP3424653A1 (de) * | 2017-07-07 | 2019-01-09 | Koninklijke Philips N.V. | Bewegungsübertragungseinheit, antriebsstrang und haarschneidevorrichtung |
CN114454222A (zh) * | 2022-03-23 | 2022-05-10 | 东莞凤铭科技交流有限公司 | 一种电推剪 |
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DE63053C (de) | P. BLACKIE in Redfern b. Sydney, New South Wales, und J | Schafscheere | ||
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2010
- 2010-04-15 EP EP10714254.9A patent/EP2421682B1/de active Active
- 2010-04-15 ES ES10714254.9T patent/ES2525348T3/es active Active
- 2010-04-15 WO PCT/EP2010/054940 patent/WO2010121941A2/de active Application Filing
-
2011
- 2011-10-17 US US13/274,554 patent/US8769824B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2010121941A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4082729A1 (de) * | 2021-04-27 | 2022-11-02 | Wuhan Shembao Pet Products Manufacturing Co., Ltd. | Von einem bürstenlosen aussenläufermotor angetriebener, elektrischer haarschneider |
Also Published As
Publication number | Publication date |
---|---|
WO2010121941A3 (de) | 2010-12-23 |
US8769824B2 (en) | 2014-07-08 |
US20120090182A1 (en) | 2012-04-19 |
EP2421682B1 (de) | 2014-10-15 |
WO2010121941A2 (de) | 2010-10-28 |
ES2525348T3 (es) | 2014-12-22 |
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