Cutting tool for electric hair clippers

The invention relates to a cutting tool for electric hair clippers according to the preamble of claim 1 and a hair clipper according to the preamble of claim 13. Such cutting rates and clippers are known for example from DE 297 24 477 U1.

Also known are so-called hot scissors. Examples electrically heatable scissors are known from DE 196 26 069 A1 or DE 101 07 284 A1 known. The advantage of such scissors is in that simultaneously with the cutting, the cut surfaces sealed the individual hair with the hot cutting will. This promotes hair regeneration, aims to prevent split ends and protect the hair from environmental influences. In case of permanent Application receives the hair more volume and shine. A disadvantage of the actuated with such a manually Scissors connected time for a haircut.

The aim of the invention is a cutting set for an electrical Hair clippers and hair clippers for at the disposal of or a seal the cut surfaces the hair allows analogous to hot scissors.

The goal is inventively achieved by a cutting set for electric hair clippers with the characterizing Features of claim 1 and by a hair clipper with the characterizing features of claim . 13

The cutting head according to the invention for electric hair clippers has a trimmer and a resting on the clipping comb Razor, which has a drive side fixed Driver is for oscillatory movement, wherein at least an electrically heatable element in the area of Clipping comb and / or of the cutting blade is arranged. By electrically heated elements, the cutters and / or heated the trimmer so that when cutting the hair clipper by the cooperating heated Cutting edges of the clipping comb and the cutting blade, an effect is obtained analogously to a hot scissors. Surprisingly it has been found that the short contact time between the cutting edges and the hair, as for high-speed electrical equipment is typical, perfectly sufficient, required sealing of the cut surfaces of the cut to ensure hair ends.

A further advantage occurs that the high temperatures the cutting set germs, bacteria and pathogens are killed. The effected thereby thermal disinfection leads to a high hygienic standard without special additional Measures.

Preferably, each is an electrically heatable element arranged region of the clipping comb and in the region of the cutting blade. The two acting together cutting edge of Clipping comb and the cutting blade thus have the same temperature on what for sealing the cut surfaces of the individual hairs is particularly favorable.

In an advantageous embodiment of the invention is the electrically heatable element with a trimmer or the Razor bonded layer or in the trimmer or the razor integrated liner, the layer or the liner thermally with the cutting edges of the clipping comb is coupled or of the clipping blade.

Preferably, the at least one electrically heatable Element is a ceramic board with integrated thermal conductor, a Hybridheizelement, a strip heater, a heating resistor or a Transistor.

In an advantageous development of the invention is the Trimmer provided with a protective ridge. Protecting comb isolated thermally prevents the outer surfaces of the clipping comb and characterized dependable inadvertent contact between the hot cutting comb and skin. He closes by any Risk of burns from the skin.

Preferably, the protective comb is firmly connected to the trimmer and can not be removed by the user, so that maximum protection is granted. By the comb-like structure protection of the comb it is ensured that on the one hand the cutting comb is thermally insulated, on the other hand, however, the Teeth of the clipping comb is mostly open, so that the Hair can be easily detected and cut.

Preferably, the at least one electrically heatable Element control electronics provided. This is a allows selective adjustment of the temperature.

In an advantageous development of the invention is the Control electronics in the blade set, the handset of the electrical Clippers or in an external module, which via a supply line from the handset or the cutting rate connected, accommodated. it is preferred the design, wherein the control electronics housed in the cutting set is because in this case, the heated blade set is independent of the handset and thus already known electrical Hair clippers with the new invention heated blade set can be equipped.

In an advantageous development of the invention is the Control electronics via a battery or a plug-in transformer for Network operation powered, the battery in the handset is integrated or in an external module, which via a Lead connected to the handset or the cutting rate is housed, and wherein the plug via a transformer Lead connected to the handset or the cutting rate is. If the control electronics powered by a rechargeable battery, which housed in an external module and a supply line is directly connected to the cutting head or the control electronics via a plug-in transformer for mains operation supplied with current, the plug-in transformer via a feed line is connected to the cutting head, the cutting set regardless of the handset and can thus for existing electric hair clippers are used.

Preferably, in the clipping comb or shearing blades is a temperature sensor arranged. This monitors the heating temperature, so that they are controlled by the control electronics can.

Preferably, the temperature of the at least one electrically heatable element set to a certain value, adjustable in plural stages, or continuously adjustable. In order to allow a broader scope, is while a control in steps or stepless control the temperature preferred.

Preferably, the rotational speed of the oscillating driver variable. By varying the speed is the average speed affected, which affect the sealing process Has. The sealing process can therefore by Varying the rotational speed to be optimized, with the choice of optimal speed of the hair thickness of the person to be treated and the operating speed of the user is dependent.

Finally, the effect of the thermal initially described Disinfection in accordance with an advantageous development of the Invention at standstill of the hair clipper, especially be in work breaks, activated. For this, manually or automatically controlled, a disinfection process initiated be, in which the cutter set at the drive switched off is heated for a predetermined time.

Depending on the thermal resistance of microorganisms to be destroyed or pathogens of communicable diseases is a temperature between about 60 ° C and 170 ° C at a heating time from 5 minutes and to take into account one hour according to the following tables.<tables><table><tgroup cols="4"><tbody><row><entry align="center"><b>Temp. In ° C</b></entry><entry align="center"><b>killing time</b></entry><entry align="left"><b>Killed or inactive pathogens</b></entry><entry align="center"><b>resistance levels</b></entry></row><row><entry align="center">80-100</entry><entry align="center">5-10 min</entry><entry align="left">Vegetative bacteria, fungi, mushroom pores</entry><entry align="center">I</entry></row><row><entry align="center">105</entry><entry align="center">5-10 min</entry><entry align="left">Spores of B. anthracis spores, B. subtilis, HAV / HBV</entry><entry align="center">II</entry></row><row><entry align="center">121 134</entry><entry align="center">15 min 3 min</entry><entry align="left">Native Erdsporen, spores of B. searothermophilus clostridial spores</entry><entry align="center">III</entry></row><row><entry align="center">134</entry><entry align="center">&gt; 30 min</entry><entry align="left">Spores of thermophilic Gram-positive rods</entry><entry align="center">IV</entry></row><row><entry align="center">134</entry><entry align="center">1 hour</entry><entry align="left">Prions (CJD, vCJD, BSE)</entry><entry align="center">V</entry></row></tbody></tgroup></table></tables><tables><table><tgroup cols="3"><tbody><row><entry align="center"><b>Temp. In ° C</b></entry><entry align="center"><b>killing time</b></entry><entry align="left"><b>Killed or inactive pathogens</b></entry></row><row><entry align="center">62.5</entry><entry align="center">30 min</entry><entry align="left">TBC pathogens, pathogenic streptococci, polioviruses</entry></row><row><entry align="center">80</entry><entry align="center">30 min</entry><entry align="left">Vegetative bacteria, yeasts, molds, all the viruses (including AIDS viruses). Exception: hepatitis viruses</entry></row><row><entry align="center">98-100</entry><entry align="center">10 min</entry><entry align="left">All vegetative species of bacteria, all viruses, including hepatitis A, B, C</entry></row></tbody></tgroup></table></tables>

Depending on the desired disinfection standard can thus individually predeterminable or festvoreingestellter disinfection cycle (Temperature and holding time) can be provided. The Activation of the disinfection process can in the simplest case individually manually, for example via an on housing or otherwise mounted actuator button is triggered. Alternatively, the trigger can automatically when Inserting the hair clipper in a corresponding charging stand done. This has the advantage that the disinfectant is triggered at least every time you charge. After all can the disinfection process according to other criteria, For example, at certain intervals, an integrated Control means are activated.

Thermal disinfection can thus also be used be if the hair clipper in the other conventional, ie is to be operated in a cold state. Furthermore, a over the normal operating temperature beyond heating be made to particularly resistant microorganisms, such as shown in the foregoing table reliably kill prions.

The hair clipper according to the invention is with an inventive Cutting set equipped. It can for the cutting set necessary components such as control and Power supply in different components of the hair clipper be arranged or an external module.

The invention is described in detail using the following figures explained.

It shows:<sl><li>figure 1 a plan view of an embodiment of the invention Cutting assembly,</li><li>figure 2a a side view of the cutting assembly of Figure 1,</li><li>figure 2b a longitudinal section through the cutting head of Figure 1,</li><li>figure 3 an exploded view of a second embodiment a cutting assembly according to the invention,</li><li>4a a plan view of the underside of the clipping comb of Figure 3 with inserted electrically heatable element,</li><li>4b a section along the line A - A of Figure 4a,</li><li>figure 5 an exploded view of a third embodiment a cutting assembly according to the invention,</li><li>6a a plan view of the underside of the clipping comb of Figure 5 with inserted electrically heatable element,</li><li>figure 6b a section along the line A - A of Figure 6a, </li><li>figure 7 a perspective view of a cutting assembly according to the invention to a power supply via a battery in an external Module,</li><li>figure 8 a perspective view of a cutting assembly according to the invention to a power supply via a plug-in transformer,</li><li>figure 9 a perspective view of a hand-held device for an electrical Hair clipper with inserted cutting set and a power supply via a battery in an external module,</li><li>figure 10 a perspective view of a hand-held device for an electrical Hair clipper with a cutting head and a Power supply via a plug-in transformer,</li><li>figure 11 a perspective view of a hand-held device for an electrical Hair clipper with inserted cutting set and integrated power supply,</li><li>figure 12 a perspective view of the handset of Figure 11 with open the handset,</li><li>figure 13a a longitudinal section through the hand-held device of Figure 11, </li><li>figure 13b an enlarged detail from Figure 13a</li><li>Figures 14a to 14g are schematic representations of different arrangements of the Control electronics and the power supply battery by means of a for an electrically heatable element and</li><li>Figures 15a to 15c are schematic representations of different arrangements of the Control electronics and the power supply by means of a plug transformer for an electrically heatable element.</li></sl>

1 shows a first embodiment of a cutting assembly 20 with a trimmer 1 and an on-hook Shearing blades 2, which has a drive side fixed Driver 9 oscillating parallel to the longitudinal axis of the clipping comb 1 is movable. The shearing blade 2 is formed by two Cutting pressure springs 10 pressed against the cutting comb. Of the Trimmer 1 is set on a cutting support 8 via two Screw 13 is fixed.

In the cutting comb 1 and the cutting blade 2 is in each case an electrically heatable element 3 as an insert integrated (see. Figure 2b). The electrically heatable elements 3 are connected to the Trimmer 1 or the shearing blade 2 and thermally coupled heat so the cutting edges of the clipping comb 1 and the cutting blade 2. The size and performance of the electrically heatable Elements 3 are on the mass to be heated of the Clipping comb 1 and the cutting blade 2 matched. The heatable Elements 3 are, for example, a ceramic board with Thermal conductor, a Hybridheizelement, a strip heater, a heating resistor or a transistor, and are positioned that the heating power distribution optimally on the to be heated cutting edges of the clipping comb 1 and the cutting blade 2 effect.

The trimmer 1 and the cutting blade 2 are connected by a protective comb 7, which preferably consists of plastic, isolated (See FIGS. 1, 3 and 5). The protective ridge 7 is about two Screws 13 rigidly connected to the cutting comb 1 and may from Users will not be removed. It serves all Risk of burns to skin be excluded. Around Cutting edges of the clipping comb 1 and the cutting blade 2 is the Protection comb 7 comb designed so that the cutting edges the clipping comb 1 and the cutting blade 2 as a known Aufsteckkamm partially open lie. This design of the Protection comb 7 ensures that the hair easily detected can be and cut. The external dimensions of the cutting unit carrier 8 including the protective comb 7 are designed, that the blade set 20 of the invention in a conventional 30 handsets fitted for electric hair clippers can be.

On cutting set 20 a lever 11 is mounted, with wherein the relative position between the cutting comb 1 and the Razor 2 and therefore the cutting length can be changed can. However, the cut length can also by the configuration protection of the ridge 7 can be defined by the distance between the outer surface of the protective ridge 7 and the cutting edges selected the clipping comb 1 and the cutting blade 2 in accordance becomes. Protecting comb 7 assumes therefore in addition to Insulation of the heated cutting edges of the clipping comb 1 and the cutting blade 2, the function of a known Aufsteckkamms.

Figure 3 shows an exploded view of a second embodiment a cutting assembly according to the invention 20. In the cutting comb is 1 from the underside, the electrically heated Element 3, which via feed lines 4 with a control electronics 6 is connected, is used, so that it on the Trimmer 1 rests. The electrically heatable element 3 come here to lie beneath the teeth of the clipping comb. 1 The shearing blades 2 is not heated. The control electronics 6 is inserted into a through opening of the clipping comb. 1 The trimmer 1 is made of a heat conductive material, so that through the contact between the cutting comb 1 and the electrically heatable element 3 the cutting edge of is heated clipping comb 1, when the electrically heatable Element is heated. Not shown is a on the cutting comb 1 arranged temperature sensor which is connected to the control electronics 6 is connected and the temperature of the clipping comb 1 measure and to the control electronics 6 for regulating the temperature passes.

The trimmer 1 is inserted into the protection comb 7, of which it is surrounded on the entire back. on the Trimmer 1, the shearing blade 2 is placed, which the Driver 9 is connected via a contact bridge 12 and the two cutting pressure springs 10 pressed against the cutting comb 1 becomes. To the control electronics 6, two contactors for 5 the contact between the cutting head 20 and the handset 30 attached. When contactor 5 to punching and bending parts Contact plates, contact plates or pins inserted will. The arrangement of the control electronics 6 in the cutting set 20 allows, with a suitable power supply from a Handset 30 independent operation of the electrically heatable Element 3, so that the cutting head 20 of the invention also to handheld devices 30 of known electric clippers can be placed.

Figure 5 shows an exploded view of a third embodiment the cutting assembly 20 of the invention, while Figures 6a and 6b, this embodiment in the assembled State show. This cutting unit 20 differs from the first embodiment in that the clipping comb 1, the electrically heatable element 3, which via the leads 4 is connected to the contactors 5, placed is, while the associated control electronics 6 is not in the Blade set 20 is, for example, but in the handset 30 is arranged.

In the figures 14a to 14g and 15a to 15c are schematically different ways of arrangement of electrically heated Element 3, 6 control electronics and power supply shown. The different components can be either in the cutting unit 20, the handset 30 or a be arranged external module 40th The dot-dash line indicated here the cutting head 20, while the broken Line, the handset 30 and the solid line, the external Module 40 symbolize.

In Figure 14a, the electrically heatable element 3 is in Cutting set 20 arranged, while both the control electronics 6 as well as the power supply via a battery 41 in an external Module 40 are arranged, which at the handset 30 connected. Figure 14 b shows the same arrangement of electrically heatable element 3, the electronic control unit 6 and the battery 41, the external module 40 directly to the cutting set 20 is coupled.

Figures 14c and 14d show an embodiment, in which both the electrically heatable element 3 as well as the control electronics 6 are arranged in the cutting unit 20, wherein the power from the battery 41 in the external module 40 happens. In the variant shown in FIG 14c is the external module 40 is connected to the handset 30, while in the variant shown in Figure 14d, the external module 40 is connected directly to the cutting set 20th

Figure 14e shows the embodiment in which the electrically heatable element 3 arranged in the blade set 20 is, while both the control electronics 6 and the Battery 41 are arranged in the handset 30th Alternatively, as shown in Figure 14f, both the electrically heatable Element 3 and the control electronics 6 in the his blade set 20 arranged while the battery 41 in the Hand-held device 30 is arranged. In the 14g in FIG Pictured Embodiment, the electrically heatable element 3 in the cutting unit 20 arranged, while the control electronics 6 is disposed in the handheld device 30 and the power supply via the battery 41 is realized in the external module 40th

Figures 15a to 15c show three embodiments for an electric hair clipper, wherein the power supply the electronic control system 6 via a plug-in transformer 50, via a supply line 51 either from the handset 30, or is the cutting head 20 connected, is realized. In Figure 15a the electrically heatable element 3 in the blade set 20 arranged, while the control electronics 6 in the handset 30 is arranged. The plug-in transformer 50 is connected via the cable 51 the handset 30. In the 15b represented in FIG Embodiment, both the electrically heatable element 3 as well as the control electronics 6 in the blade set 20 arranged while the plug-in transformer 50 via the feed line 51 is connected to the handset 30th Alternatively, as in Figure 15c illustrates the plug-in transformer 50 via the supply line be 51 directly connected to the blade set 20th

Figures 7 and 8 show an embodiment of the cutting assembly 20, in which the blade set 20 completely independent can be operated from the handset 30th The electrically heatable Element 3 and the electronic control unit 6 are in the cutting set 20. The power supply of the control electronics 6 happens as shown in Figure 7 via the external module 40, in which the battery 41 is disposed, and which have a Lead 44 is connected to the cutting head 20 (see. Also Figure 14d). On the external module 40, a control element 43 for switching and regulating the temperature of the electrically heatable element 3, wherein the temperature of the electrically heatable element 3 on a display element 42 is shown. In Figure 8, the cutting head 20 in which the electrically heatable element 3 and the control electronics 6 are integrated on the lead 51 with the plug-in transformer 50 connected for network operation (see also FIG. 15c).

In Figures 9 and 10 show two exemplary embodiments are shown, in which the power supply to the handset 30 connected. Figure 9 shows the variant in which the realized power from the battery 41 in the external module 40 is, which via the supply line 44 to the handset 30 connected. is located on the handset 30, an on / off switch 31, with which both the heating function of the electric heatable element 3 and the cutting function of the Cutting assembly 20 on and off. On handset 30 is arranged consisting of four LEDs, a status display 32, which the user of the current temperature the electrically heatable element 30 informed. For example light from the four lights on the control display 32 the more diodes, the warmer the electrically heatable Element 3 is. Alternatively, in place of the status display 32. Also, a display panel of the handset 30 be that the absolute temperature of the electrically heated Elements 3 displays. In the embodiments illustrated in Figure 10 is the embodiment of the handheld device 30 identical to that shown in Figure 9 embodiment, wherein the power supply of the handset 30 via the plug-in transformer 50 realized that what on the lead 51 to Handset 30 is connected.

In the figures 11 to 13 an embodiment is shown, wherein all of the electrically heatable Cutting set 20 required components such as electrically heated Element 3, the electronic control unit 6 and the power supply, integrated into the handset 30 and the cutting head 20 are such that no external module 40 is necessary. The electrically heatable element 3 is as in Figure 3 described on the trimmer. 1 The control electronics 6 is also integrated into the blade set 20th The battery 41 is disposed in the handset 30 so that the handset 30 operated independently of the external module 40 or the network can be. In the direction away from the cutting head 20 end of Handset 30 is a socket 39 inserted to the Battery 41 charge if required. The socket 39 is to connected via load contact plates 38 with the battery 41st The battery 41 contacts a board 33, which has two supply lines 34 is connected to a motor 36 and for controlling the motor 36 serves. The motor 36 is connected via an eccentric 37 to the Driver 9 of the cutting assembly 20 is connected, so that on this the shearing blade 20 oscillating with respect to the cutting comb 1 is movable. In addition, over the on / off switch 31 also the speed of the motor 36 and thus the cutting speed be varied. The sealing operation during cutting the hair with the heated cutting edge of the cutting set 20 can thus be optimized, with the choice of optimal Speed ​​of the hair thickness of the person to be treated and the operating speed of the user dependent. Of the Contact between the cutting unit 20 and the handset 30 is guaranteed by the contactor 5, which at two retaining springs rest 35 on the leads 34 to the circuit board 33 connected.

LIST OF REFERENCE NUMBERS

<dl tsize="2" compact="compact"><dt>1</dt><dd>trimmer</dd><dt>2</dt><dd>razor</dd><dt>3</dt><dd>electrically heatable element</dd><dt>4</dt><dd>lead</dd><dt>5</dt><dd>contactor</dd><dt>6</dt><dd>control electronics</dd><dt>7</dt><dd>protection Crest</dd><dt>8th</dt><dd>Cutting set carrier</dd><dt>9</dt><dd>entrainment</dd><dt>10</dt><dd>Cutting pressure spring</dd><dt>11</dt><dd>adjusting</dd><dt>12</dt><dd>contact bridge</dd><dt>13</dt><dd>screw</dd><dt>20</dt><dd>cutting set</dd><dt>30</dt><dd>handset</dd><dt>31</dt><dd>On off switch</dd><dt>32</dt><dd>status display</dd><dt>33</dt><dd>circuit board</dd><dt>34</dt><dd>Supply of the motor</dd><dt>35</dt><dd>retaining spring</dd><dt>36</dt><dd>motor</dd><dt>37</dt><dd>eccentric</dd><dt>38</dt><dd>Charging contact plate</dd><dt>39</dt><dd>socket</dd><dt>40</dt><dd>external module</dd><dt>41</dt><dd>battery pack</dd><dt>42</dt><dd>display element</dd><dt>43</dt><dd>control element</dd><dt>44</dt><dd>lead</dd><dt>50</dt><dd>plug-in transformer</dd><dt>51</dt><dd>lead</dd></dl>