EP3023354A1 - Handheld tool gear closure and handheld machine tool - Google Patents
Handheld tool gear closure and handheld machine tool Download PDFInfo
- Publication number
- EP3023354A1 EP3023354A1 EP14194224.3A EP14194224A EP3023354A1 EP 3023354 A1 EP3023354 A1 EP 3023354A1 EP 14194224 A EP14194224 A EP 14194224A EP 3023354 A1 EP3023354 A1 EP 3023354A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hand tool
- transmission
- closure
- base body
- housing
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/12—Means for driving the impulse member comprising a crank mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/008—Cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1611—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of an orifice, capillary or labyrinth passage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/121—Housing details
Definitions
- the present invention relates to a hand tool transmission closure with a base body for closing a transmission housing opening of a transmission housing of a hand tool machine, in particular a hammer drill or combi hammer.
- the present invention also relates to a hand tool with a hand tool gear lock.
- a percussion with a piston, connecting rod and an anvil can be arranged within the gear housing of a typical hand tool.
- a lubricant in the transmission housing for example a transmission oil
- the lubricant is introduced into the transmission housing via the transmission housing opening.
- the gear housing opening is closed by a base body of a hand tool gearbox closure.
- the main body may be formed as a plug.
- the object is achieved in that the hand tool gearbox closure has a tube protruding from the base body, which runs in the gearbox housing when the base body closes the gearbox housing opening.
- the hand tool gearbox closure has an air channel which extends through the base body in a first air duct section and through the tube in a second air duct section, so that an air mass can flow through and into the transmission housing through the air duct.
- an air mass which is expanded due to the machine tool operation and especially by heating the lubricant located in the transmission housing, now escape from the transmission housing.
- an undesired escape of the lubricant from the transmission housing is avoided.
- the invention includes the recognition that a lubricant, in particular oil, must not escape from a transmission housing, since otherwise the lubricating capacity drops, on the one hand, and, on the other hand, contaminates the surface of the machine tool that is visible to the user.
- the invention also includes the recognition that increases by the closed design of a gear housing and its closure by means of a body without air duct, the internal pressure of a transmission case during operation of the machine tool to an undesirably high pressure level.
- a high pressure level is detrimental to the life and in particular the work performance data, for example, the delivered impact energy of the power tool.
- the hand tool closure according to the invention contributes to eliminating these disadvantages.
- the tube has an inner diameter between 0.2 and 0.8 mm.
- the inside diameter can be between 0.4 and 0.6 mm. It has proved to be particularly advantageous if the inner diameter of the tube is 0.5 mm.
- the tube is made of metal.
- the tube may be made of a temperature resistant plastic or the like.
- the tube protrudes from the base body in such a way that it ends in the vicinity of a percussion mechanism arranged in the gear housing when the base body closes the gear housing opening.
- the tube ends near a connecting rod of the striking mechanism.
- the tube may protrude from the body so that it reaches up to the axis of movement of the connecting rod, without interfering with the range of movement of the connecting rod, i. especially without coming into contact with the connecting rod.
- the tube is dimensioned in such a way, in particular with regard to length, inner diameter and / or Abragwinkel of the body that a capillary increase of lubricant is avoided within the tube.
- a typical transmission oil with a viscosity of 5-20 mm 2 / s at 100 ° C, a density between 850 kg / m 3 to 900 kg / m 3 at 20 ° C and a surface tension of 20 - 30 N. / m is at 100 ° C, so is the preferred Inner diameter of the tube of 0.5 mm already sufficiently large to prevent adverse capillary increase of the gear oil in the tube.
- the hand tool gear lock has a pressure valve arranged in the first air duct section.
- About the pressure valve occurring in the transmission housing pressure can be degraded.
- a negative pressure occurring in the transmission housing can be compensated via the pressure valve.
- the pressure valve may be formed as a plate-shaped membrane with a central opening, which is preferably arranged on a pin, in particular on a centrally arranged pin of the base body.
- the plate-shaped membrane may be made of an elastomeric material, a rubber, or other elastically deformable material, or at least have such.
- the pressure valve may be designed so that it opens only when exceeding a predetermined pressure difference, for example 2 bar, between ambient pressure and transmission pressure. This is advantageous, for example, if the machine tool has an electropneumatic hammer mechanism for which a desired overpressure is desirable.
- the base body has an annular pressure distribution chamber, which is closed by the pressure valve designed as a plate-shaped membrane, in particular when the transmission internal pressure and ambient pressure (air pressure outside the transmission housing) are substantially equal.
- the base body has a sealing ring, which is arranged to seal the base body circumferentially to the transmission housing opening.
- the base body is designed as a plug.
- a plug function of the main body can be effected, for example, by a sealing ring provided on the main body.
- the main body can have lamellae, which are designed to hold the main body in a gear housing opening frictionally.
- the object is achieved in that the hand tool machine has a prescribed hand tool gear lock.
- a hand tool gear lock 10 in Fig. 1 has a base body 1, which is provided for closing a transmission housing opening, not shown.
- the hand tool gear lock 10 has a protruding from the base body 1 tube 2, which is provided in the present case as a metal tube.
- the hand tool transmission closure 10 has an air channel, which is formed by a first air duct section L1, which runs through the base body 1, and by a second air duct section L2, which extends through the tube 2. Through this air channel formed by the air duct sections L1, L2, an air mass LM can flow into and out of the transmission housing, not shown.
- the tube 2 has an inner diameter D of 0.5 mm. Since the tube 2 protrudes from the underside of the main body 1, the tube 2 extends within a transmission housing when the main body 1 closes a transmission housing opening.
- a sealing ring 6 is arranged, which in the present case consists of an elastically deformable rubber.
- the hand tool transmission closure 10 has a pressure valve 3 which is arranged in the first air duct section L1 and which in the present case is designed as a plate-shaped membrane with a central opening 3 '.
- the designed as a plate-shaped diaphragm pressure valve 3 is arranged on a central pin 4 of the base body 1.
- the main body 1 has an annular pressure distribution chamber 5, which is closed by the pressure valve 3 designed as a plate-shaped membrane.
- an air mass LM can escape from the transmission housing, which is illustrated by the dashed line pointing away from the main body 1 with arrow. Furthermore, an air mass LM can pass from the transmission environment into the transmission housing, not shown, via the pressure valve 3, which is indicated by the dashed line pointing in the direction of the tube 2 with an arrow.
- the pressure regulating function of the pressure valve 3 will be described with reference to FIGS 4 to 6 explained in more detail below.
- Fig. 2 shows the hand tool gear 10, which closes a gear housing opening 70 of a gear housing 80.
- the base body 1 of the hand tool transmission closure 10 is held by a circumferentially extending sealing ring 6 in the gear housing opening 70 and held by a arranged below a swing plate 50 leaf spring 40 in its position.
- the tube 2 protrudes from the base body 1 in such a way that the tube 2 ends in the vicinity of a connecting rod 30 of the striking mechanism 60. More specifically, stands out the tube 2 in such a way from the base body 1 that it reaches up to the axis of movement A of the connecting rod 30, without interfering with the range of movement of the connecting rod 30, that is, in particular without coming into contact with the connecting rod 30 - regardless of a respective Pleuellage.
- an air exchange of the gear housing 80 is achieved without a lubricant can escape from selbigem.
- Fig. 3 shows the hand tool gear 10 with the base body 2 and the bottom projecting tube 2, wherein in Fig. 3 a rear view of the hand tool transmission closure 10 is shown (viewing direction from the right with respect to Fig. 2 Marked in Fig. 3 is a section AA, whose section AA below with reference to Fig. 4 is explained in more detail.
- the in Fig. 4 Section AA shows the hand tool transmission closure 10 in its state when transmission internal pressure DI within the transmission housing 80 and ambient pressure DU outside the transmission housing 80 are substantially equal. Trained as a plate-shaped diaphragm pressure valve 3 rests on the pin 4 of the body 1 in undeflected state. There is no exchange of air via the first and second air duct section L1, L2 and the pressure valve 3 instead. This is the case, for example, if the hand tool was not in operation for a long time or during operation of the power tool when pressure equalization has already taken place.
- Fig. 5 shows the state of the hand tool transmission closure 10 when the transmission internal pressure DI exceeds the ambient pressure DU, ie there is an overpressure in the transmission housing. This is the case, for example, when the percussion mechanism has heated a lubricant in the transmission housing.
- An air mass LM flows according to the dashed arrow into the protruding from the base body 1 tube 2 and moves along the defined by the tube 2 air duct section L2 in the direction of the body 1. From there, the air mass LM passes in accordance with the dashed arrow direction in the pressure distribution 5, wherein the pressure distribution chamber 5 is arranged in the first air passage portion L1 of the base body 1.
- the pressure valve 3 By means of an elastic deflection of the pressure valve 3 provided as a plate-shaped membrane, the air mass LM on the upper side of the main body 1 can escape therefrom.
- the pressure valve 3 designed as a plate-shaped diaphragm is lifted off by a first valve seat 1 'located on the outer circumference of the main body 1. After pressure equalization, the pressure valve 3 returns to its in Fig. 4 shown starting position back.
- Fig. 6 now shows the state of the hand tool transmission closure 10 when the transmission internal pressure DI falls below the ambient pressure DU, ie, there is a negative pressure in the transmission housing 80. This is for example the case when the percussion cools down after a tool operation.
- An air mass LM indicated by the dashed arrow can flow into the annular pressure distribution chamber 5 on the upper side of the main body 1 via the pressure valve 3 designed as a plate-shaped membrane.
- the pressure valve 3 designed as a plate-shaped diaphragm is lifted off a second valve seat 1 "located on the central pin 4 of the main body 1.
- the air mass LM flows along the first air duct section L1 continues through the main body 1 until it reaches the air duct section L2 of the tube 2 protruding from the main body 1, to emerge from the tube 2 at the end thereof, as illustrated by the dashed arrow 2.
- the pressure valve 3 After pressure equalization has taken place, the pressure valve 3 returns to its in Fig. 4 shown starting position back.
- FIG Fig. 7 A hand tool 100 according to the invention is shown in FIG Fig. 7 shown.
- This has a tool housing 90 which encloses a transmission housing 80.
- a percussion 60 is arranged with a connecting rod 30.
- the hand tool gear lock 10 is arranged in a gear housing opening 70 and is covered on the upper side by a swing plate 50 of the power tool 100.
- the tube 2 protruding from the base body 1 of the hand tool transmission closure 10 terminates in the vicinity of the connecting rod 30 of the percussion mechanism 60. Tubes 2 protruding from the base body 1 prevent undesired escape of the lubricant from the transmission housing 80.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Handwerkzeuggetriebeverschluss mit einem Grundkörper zum Verschließen einer Getriebegehäuseöffnung eines Getriebegehäuses einer Handwerkzeugmaschine, insbesondere eines Bohrhammers oder Kombihammers, wobei der Handwerkzeuggetriebeverschluss ein vom Grundkörper abragendes Röhrchen aufweist, das im Getriebegehäuse verläuft, wenn der Grundkörper die Getriebegehäuseöffnung verschließt, wobei der Handwerkzeuggetriebeverschluss einen Luftkanal aufweist, der in einem ersten Luftkanalabschnitt durch den Grundkörper und in einem zweiten Luftkanalabschnitt durch das Röhrchen verläuft, so dass eine Luftmasse durch den Luftkanal in das und aus dem Getriebegehäuse strömen kann.Hand tool transmission closure with a base body for closing a transmission housing opening of a transmission housing of a hand tool, in particular a hammer drill or combihammer, wherein the hand tool transmission closure has a projecting from the base tube, which runs in the transmission housing when the body closes the gear housing opening, wherein the hand tool transmission closure has an air duct, the in a first air duct section through the base body and in a second air duct section through the tube, so that an air mass can flow through the air duct into and out of the transmission housing.
Description
Die vorliegende Erfindung betrifft einen Handwerkzeuggetriebeverschluss mit einem Grundkörper zum Verschließen einer Getriebegehäuseöffnung eines Getriebegehäuses einer Handwerkzeugmaschine, insbesondere eines Bohrhammers oder Kombihammers. Die vorliegende Erfindung betrifft ebenfalls eine Handwerkzeugmaschine mit einem Handwerkzeuggetriebeverschluss.The present invention relates to a hand tool transmission closure with a base body for closing a transmission housing opening of a transmission housing of a hand tool machine, in particular a hammer drill or combi hammer. The present invention also relates to a hand tool with a hand tool gear lock.
Innerhalb des Getriebegehäuses einer typischen Handwerkzeugmaschine kann ein Schlagwerk mit einem Kolben, Pleuel sowie einem Döpper angeordnet sein. Diese werden durch ein in dem Getriebegehäuse befindliches Schmiermittel, beispielsweise ein Getriebeöl, geschmiert, um möglichst reibungsarm zusammenzuwirken. Typischerweise wird das Schmiermittel über die Getriebegehäuseöffnung in das Getriebegehäuse eingebracht. Um zu vermeiden, dass das Schmiermittel aus dem Getriebegehäuse austritt, wird die Getriebegehäuseöffnung durch einen Grundkörper eines Handwerkzeuggetriebeverschlusses verschlossen. Der Grundkörper kann als Stopfen ausgebildet sein.Within the gear housing of a typical hand tool, a percussion with a piston, connecting rod and an anvil can be arranged. These are lubricated by a lubricant in the transmission housing, for example a transmission oil, in order to cooperate with as little friction as possible. Typically, the lubricant is introduced into the transmission housing via the transmission housing opening. In order to avoid that the lubricant exits the gear housing, the gear housing opening is closed by a base body of a hand tool gearbox closure. The main body may be formed as a plug.
Es ist Aufgabe der vorliegenden Erfindung, einen verbesserten Handwerkzeuggetriebeverschluss bereitzustellen, der eine erhöhte Lebensdauer einer Handwerkzeugmaschine begünstigt. Ebenfalls ist es Aufgabe der vorliegenden Erfindung, eine Handwerkzeugmaschine mit einem derart verbesserten Handwerkzeuggetriebeverschluss bereitzustellen.It is an object of the present invention to provide an improved hand tool transmission closure, which favors an increased life of a hand tool. It is also an object of the present invention to provide a hand tool with such an improved hand tool gear lock.
Bezüglich des Handwerkzeuggetriebeverschlusses wird die Aufgabe dadurch gelöst, dass der Handwerkzeuggetriebeverschluss ein vom Grundkörper abragendes Röhrchen aufweist, das im Getriebegehäuse verläuft, wenn der Grundkörper die Getriebegehäuseöffnung verschließt. Der Handwerkzeuggetriebeverschluss weist einen Luftkanal auf, der in einem ersten Luftkanalabschnitt durch den Grundkörper und in einem zweiten Luftkanalabschnitt durch das Röhrchen verläuft, so dass eine Luftmasse durch den Luftkanal in das und aus dem Getriebegehäuse strömen kann.With regard to the hand tool gearbox closure, the object is achieved in that the hand tool gearbox closure has a tube protruding from the base body, which runs in the gearbox housing when the base body closes the gearbox housing opening. The hand tool gearbox closure has an air channel which extends through the base body in a first air duct section and through the tube in a second air duct section, so that an air mass can flow through and into the transmission housing through the air duct.
Vorteilhafterweise kann nun eine Luftmasse, die aufgrund des Werkzeugmaschinenbetriebs und speziell durch Erhitzung des im Getriebegehäuse befindlichen Schmiermittels expandiert wird, aus dem Getriebegehäuse entweichen. Durch das erfindungsgemäße vom Grundkörper abragende Röhrchen, wird ein unerwünschtes Austreten des Schmiermittels aus dem Getriebegehäuse vermieden.Advantageously, an air mass, which is expanded due to the machine tool operation and especially by heating the lubricant located in the transmission housing, now escape from the transmission housing. As a result of the tube projecting from the main body according to the invention, an undesired escape of the lubricant from the transmission housing is avoided.
Die Erfindung schließt die Erkenntnis ein, dass ein Schmiermittel, insbesondere Öl, nicht aus einem Getriebegehäuse austreten darf, da sonst zum einen die Schmierleistung sinkt, zum anderen die für den Anwender sichtbare Oberfläche der Werkzeugmaschine verschmutzt. Die Erfindung schließt ebenfalls die Erkenntnis ein, dass durch die geschlossene Bauweise eines Getriebegehäuses und dessen Verschließen mittels eines Grundkörpers ohne Luftkanal, der Innendruck eines Getriebegehäuses während des Betriebs der Werkzeugmaschine auf ein unerwünscht hohes Druckniveau steigt. Ein hohes Druckniveau ist der Lebensdauer und insbesondere auch den Arbeitsleistungsdaten, zum Beispiel der abgegebenen Schlagenergie der Handwerkzeugmaschine abträglich. Der erfindungsgemäße Handwerkzeugverschluss trägt zu einer Beseitigung dieser Nachteile bei.The invention includes the recognition that a lubricant, in particular oil, must not escape from a transmission housing, since otherwise the lubricating capacity drops, on the one hand, and, on the other hand, contaminates the surface of the machine tool that is visible to the user. The invention also includes the recognition that increases by the closed design of a gear housing and its closure by means of a body without air duct, the internal pressure of a transmission case during operation of the machine tool to an undesirably high pressure level. A high pressure level is detrimental to the life and in particular the work performance data, for example, the delivered impact energy of the power tool. The hand tool closure according to the invention contributes to eliminating these disadvantages.
In einer bevorzugten Ausgestaltung weist das Röhrchen einen Innendurchmesser zwischen 0,2 und 0,8 mm auf. Der Innendurchmesser kann zwischen 0,4 und 0,6 mm aufweisen. Als besonders vorteilhaft hat es sich herausgestellt, wenn der Innendurchmesser des Röhrchens 0,5 mm beträgt. Durch einen derart gewählten Innendurchmesser wird vorteilhafter Weise eine im Zuge des Werkzeugbetriebs im Getriebegehäuse auftretende Druckpulsation wirksam gedämpft.In a preferred embodiment, the tube has an inner diameter between 0.2 and 0.8 mm. The inside diameter can be between 0.4 and 0.6 mm. It has proved to be particularly advantageous if the inner diameter of the tube is 0.5 mm. By such a selected inner diameter advantageously occurring in the course of the tool operation in the transmission housing pressure pulsation is effectively damped.
Im Sinne einer verbesserten Temperaturstabilität hat es sich als vorteilhaft herausgestellt, wenn das Röhrchen aus Metall besteht ist. Alternativ kann das Röhrchen aus einem temperaturbeständigen Kunststoff oder Ähnlichem bestehen.In terms of improved temperature stability, it has proven to be advantageous if the tube is made of metal. Alternatively, the tube may be made of a temperature resistant plastic or the like.
Um eine weitere Sicherheitsreserve für ein schmiermittelfreien Luftaustausch durch den erfindungsgemäßen Handwerkzeuggetriebeverschluss zu ermöglichen, hat es sich als vorteilhaft herausgestellt, wenn das Röhrchen derart vom Grundkörper abragt, dass es in der Nähe eines im Getriebegehäuse angeordneten Schlagwerks endet, wenn der Grundkörper die Getriebegehäuseöffnung verschließt. Bevorzugt endet das Röhrchen in der Nähe eines Pleuels des Schlagwerks. Das Röhrchen kann derart vom Grundkörper abragen, dass es bis an die Bewegungsachse des Pleuels heranreicht, ohne in den Bewegungsbereich des Pleuels einzugreifen, d.h. insbesondere ohne mit dem Pleuel in Kontakt zu kommen.In order to enable a further safety margin for a lubrication-free air exchange by the hand tool gear lock according to the invention, it has proven to be advantageous if the tube protrudes from the base body in such a way that it ends in the vicinity of a percussion mechanism arranged in the gear housing when the base body closes the gear housing opening. Preferably, the tube ends near a connecting rod of the striking mechanism. The tube may protrude from the body so that it reaches up to the axis of movement of the connecting rod, without interfering with the range of movement of the connecting rod, i. especially without coming into contact with the connecting rod.
Es hat sich als vorteilhaft herausgestellt, wenn das Röhrchen derart dimensioniert ist, insbesondere hinsichtlich Länge, Innendurchmesser und/oder Abragwinkel vom Grundkörper, dass ein kapillarer Anstieg von Schmiermittel innerhalb des Röhrchens vermieden wird. Ist beispielsweise innerhalb des Getriebegehäuses ein typisches Getriebeöl mit einer Viskosität von 5-20 mm2/s bei 100° C, einer Dichte zwischen 850 kg/m3 bis 900 kg/m3 bei 20° C sowie einer Oberflächenspannung von 20 - 30 N/m bei 100° C befindlich, so ist der bevorzugte Innendurchmesser des Röhrchens von 0,5 mm bereits hinreichend groß, um einen nachteiligen kapillaren Anstieg des Getriebeöls im Röhrchen zu verhindern.It has proven to be advantageous if the tube is dimensioned in such a way, in particular with regard to length, inner diameter and / or Abragwinkel of the body that a capillary increase of lubricant is avoided within the tube. If, for example, within the transmission housing, a typical transmission oil with a viscosity of 5-20 mm 2 / s at 100 ° C, a density between 850 kg / m 3 to 900 kg / m 3 at 20 ° C and a surface tension of 20 - 30 N. / m is at 100 ° C, so is the preferred Inner diameter of the tube of 0.5 mm already sufficiently large to prevent adverse capillary increase of the gear oil in the tube.
In einer besonders bevorzugten Ausgestaltung, weist der Handwerkzeuggetriebeverschluss einen im ersten Luftkanalabschnitt angeordnetes Druckventil auf. Über das Druckventil kann ein im Getriebegehäuse auftretender Überdruck abbaubar sein. Bevorzugt ist über das Druckventil ein im Getriebegehäuse auftretender Unterdruck ausgleichbar.In a particularly preferred embodiment, the hand tool gear lock has a pressure valve arranged in the first air duct section. About the pressure valve occurring in the transmission housing pressure can be degraded. Preferably, a negative pressure occurring in the transmission housing can be compensated via the pressure valve.
Das Druckventil kann als tellerförmige Membran mit zentraler Öffnung ausgebildet sein, die bevorzugt an einem Zapfen, insbesondere an einem zentral angeordneten Zapfen des Grundkörpers, angeordnet ist. Somit ergibt sich zum einen ein besonders robustes, zum anderen ein leicht montierbares Druckventil. Die tellerförmige Membran kann aus einem Elastomerwerkstoff, einem Gummi, oder einem anderen elastisch verformbaren Werkstoff bestehen, oder wenigstens einen solchen aufweisen.The pressure valve may be formed as a plate-shaped membrane with a central opening, which is preferably arranged on a pin, in particular on a centrally arranged pin of the base body. Thus, on the one hand results in a particularly robust, on the other hand, an easily mounted pressure valve. The plate-shaped membrane may be made of an elastomeric material, a rubber, or other elastically deformable material, or at least have such.
Das Druckventil kann derart ausgelegt sein, das es erst mit dem Überschreiten einer vorbestimmten Druckdifferenz, beispielsweise 2 Bar, zwischen Umgebungsdruck und Getriebedruck öffnet. Dies ist beispielsweise vorteilhaft, wenn die Werkzeugmaschine ein elektropneumatisches Schlagwerk aufweist für das ein Sollüberdruck wünschenswert ist.The pressure valve may be designed so that it opens only when exceeding a predetermined pressure difference, for example 2 bar, between ambient pressure and transmission pressure. This is advantageous, for example, if the machine tool has an electropneumatic hammer mechanism for which a desired overpressure is desirable.
Ebenfalls bevorzugt weist der Grundkörper eine ringförmige Druckverteilkammer auf, die durch das als tellerförmige Membran ausgebildete Druckventil verschlossen ist, insbesondere wenn Getriebeinnendruck und Umgebungsdruck (Luftdruck außerhalb des Getriebegehäuses) im Wesentlichen gleich sind.Also preferably, the base body has an annular pressure distribution chamber, which is closed by the pressure valve designed as a plate-shaped membrane, in particular when the transmission internal pressure and ambient pressure (air pressure outside the transmission housing) are substantially equal.
In einer bevorzugten Ausgestaltung weist der Grundkörper einen Dichtring auf, der angeordnet ist, den Grundkörper umfangseitig zur Getriebegehäuseöffnung abzudichten.In a preferred embodiment, the base body has a sealing ring, which is arranged to seal the base body circumferentially to the transmission housing opening.
Bevorzugt ist der Grundkörper als Stopfen ausgebildet. Eine Stopfen-Funktion des Grundkörpers kann beispielsweise durch einen am Grundkörper vorgesehenen Dichtring bewirkt sein. Alternativ oder zusätzlich kann der Grundkörper Lamellen aufweisen, die ausgebildet sind, den Grundkörper in einer Getriebegehäuseöffnung kraftschlüssig zu halten.Preferably, the base body is designed as a plug. A plug function of the main body can be effected, for example, by a sealing ring provided on the main body. Alternatively or additionally, the main body can have lamellae, which are designed to hold the main body in a gear housing opening frictionally.
Bezüglich der Handwerkzeugmaschine wird die Aufgabe dadurch gelöst, dass die Handwerkzeugmaschine einen vorbeschriebenen Handwerkzeuggetriebeverschluss aufweist. Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zur sinnvollen weiteren Kombination zusammenfassen.With regard to the hand tool machine, the object is achieved in that the hand tool machine has a prescribed hand tool gear lock. Further advantages will become apparent from the following description of the figures. In the figures, various embodiments of the present invention are shown. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into a meaningful further combination.
In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert.In the figures, identical and similar components are numbered with the same reference numerals.
Es zeigen:
- Fig. 1
- eine schematische und perspektivische Darstellung eines Schnitts durch einen erfindungsgemäßen Handwerkzeuggetriebeverschlusses;
- Fig. 2
- eine schematische Darstellung des Handwerkzeuggetriebeverschlusses aus
Fig. 1 , der eine Getriebegehäuseöffnung verschließt; - Fig. 3
- eine schematische Darstellung des Handwerkzeuggetriebeverschlusses aus
Fig. 2 in rückseitiger Darstellung und eingezeichneter Schnittlinie A-A; - Fig. 4
- eine schematische Schnittdarstellung des Handwerkzeuggetriebeverschlusses entsprechend der Schnittline A-A aus
Fig. 3 , wenn Getriebeinnendruck und Umgebungsdruck im Wesentlichen gleich sind; - Fig. 5
- eine zweite schematische Schnittdarstellung des Handwerkzeuggetriebeverschlusses entsprechend der Schnittline A-A auf
Fig. 3 , wenn der Getriebeinnendruck den Umgebungsdruck übersteigt; - Fig. 6
- eine dritte schematische Schnittdarstellung des Handwerkzeuggetriebeverschlusses entsprechend der Schnittline A-A auf
Fig. 3 , wenn der Getriebeinnendruck den Umgebungsdruck unterschreitet; - Fig. 7
- eine schematische Darstellung einer Handwerkzeugmaschine mit einem erfindungsgemäßen Handwerkzeuggetriebeverschluss.
- Fig. 1
- a schematic and perspective view of a section through a hand tool gear lock according to the invention;
- Fig. 2
- a schematic representation of the hand tool gearbox closure
Fig. 1 closing a transmission housing opening; - Fig. 3
- a schematic representation of the hand tool gearbox closure
Fig. 2 in reverse and drawn section line AA; - Fig. 4
- a schematic sectional view of the hand tool gear lock according to the section line AA
Fig. 3 when transmission internal pressure and ambient pressure are substantially equal; - Fig. 5
- a second schematic sectional view of the hand tool gear lock according to the section line AA
Fig. 3 when the transmission internal pressure exceeds the ambient pressure; - Fig. 6
- a third schematic sectional view of the hand tool gear lock according to the section line AA
Fig. 3 when the transmission internal pressure falls below the ambient pressure; - Fig. 7
- a schematic representation of a power tool with a hand tool gear lock according to the invention.
Ein Handwerkzeuggetriebeverschluss 10 in
Vorliegend weist das Röhrchen 2 einen Innendurchmesser D von 0,5 mm auf. Da das Röhrchen 2 von der Unterseite des Grundkörpers 1 abragt, verläuft das Röhrchen 2 innerhalb eines Getriebegehäuses, wenn der Grundkörper 1 eine Getriebegehäuseöffnung verschließt. Umfangsseitig am Grundkörper 1 ist ein Dichtring 6 angeordnet, der vorliegend aus einem elastisch verformbaren Gummi besteht.In the present case, the
Wie in
Durch das Druckventil 3 kann eine Luftmasse LM aus dem Getriebegehäuse entweichen, was durch den vom Grundkörper 1 wegweisende gestrichelte Linie mit Pfeil verdeutlicht ist. Des Weiteren kann eine Luftmasse LM aus der Getriebeumgebung in das nicht gezeigte Getriebegehäuse über das Druckventil 3 gelangen, was durch den in Richtung des Röhrchens 2 weisende gestrichelte Linie mit Pfeil angedeutet ist. Die Druckregelfunktion des Druckventils 3 wird mit Bezug auf die
Wie ebenfalls aus
Der in
Eine erfindungsgemäße Handwerkzeugmaschine 100 ist in
- DD
- Innendurchmesser des RöhrchensInner diameter of the tube
- DIDI
- GetriebeinnendruckGearbox internal pressure
- DUYOU
- Umgebungsdruckambient pressure
- L1L1
- erster Luftkanalabschnittfirst air duct section
- L2L2
- zweiter Luftkanalabschnittsecond air duct section
- LMLM
- Luftmasseair mass
- 11
- Grundkörperbody
- 1'1'
- erster Ventilsitzfirst valve seat
- 1"1"
- zweiter Ventilsitzsecond valve seat
- 22
- Röhrchentube
- 33
- Druckventilpressure valve
- 3'3 '
- zentrale Öffnungcentral opening
- 44
- zentraler Zapfencentral pin
- 55
- Druckverteilkammerpressure distribution
- 66
- Dichtringseal
- 1010
- HandwerkzeuggetriebeverschlussHand Tools Transmission closure
- 3030
- Pleuelpleuel
- 4040
- Blattfederleaf spring
- 5050
- Schwingplattevibration plate
- 6060
- Schlagwerkstriking mechanism
- 7070
- GetriebegehäuseöffnungGearbox housing opening
- 8080
- Getriebegehäusegearbox
- 9090
- Werkzeuggehäusetool housing
- 100100
- HandwerkzeugmaschineHand tool
Claims (10)
dadurch gekennzeichnet, dass das Röhrchen (2) einen Innendurchmesser (D) zwischen 0,2 und 0,8 mm, bevorzugt 0,5 mm aufweist.Hand tool transmission closure (10) according to claim 1,
characterized in that the tube (2) has an inner diameter (D) between 0.2 and 0.8 mm, preferably 0.5 mm.
dadurch gekennzeichnet, dass das Röhrchen (2) derart vom Grundkörper (1) abragt, dass es in der Nähe eines im Getriebegehäuse (80) angeordneten Schlagwerks (60), insbesondere eine Pleuels (30) des Schlagwerks (60) endet, wenn der Grundkörper (1) die Getriebegehäuseöffnung (70) verschließt.Hand tool transmission closure (10) according to claim 1 or 2,
characterized in that the tube (2) protrudes from the base body (1) in such a way that it ends in the vicinity of a percussion mechanism (60) arranged in the transmission housing (80), in particular a connecting rod (30) of the percussion mechanism (60) (1) the transmission housing opening (70) closes.
dadurch gekennzeichnet, dass der Handwerkzeuggetriebeverschluss (10) ein im ersten Luftkanalabschnitt (L1) angeordnetes Druckventil (3) aufweist, über das ein im Getriebegehäuse (80) auftretender Überdruck abbaubar ist.Hand tool transmission closure (10) according to one of the preceding claims,
characterized in that the hand tool gearbox closure (10) has a pressure valve (3) arranged in the first air duct section (L1) via which an overpressure occurring in the gearbox housing (80) is degradable.
dadurch gekennzeichnet, dass über das Druckventil (3) ein im Getriebegehäuse (80) auftretender Unterdruck ausgleichbar ist.Hand tool transmission closure (10) according to claim 4,
characterized in that via the pressure valve (3) in the transmission housing (80) occurring negative pressure is compensated.
dadurch gekennzeichnet, dass das Druckventil (3) als tellerförmige Membran mit zentraler Öffnung (3') ausgebildet ist, die an einem Zapfen (4) des Grundkörpers (1) angeordnet ist.Hand tool transmission closure (10) according to claim 4 or 5,
characterized in that the pressure valve (3) as a plate-shaped membrane with a central opening (3 ') is formed, which is arranged on a pin (4) of the base body (1).
dadurch gekennzeichnet, dass der Grundkörper (1) eine ringförmige Druckverteilkammer (5) aufweist, die durch das als tellerförmige Membran ausgebildete Druckventil (3) verschlossen ist, wenn Getriebeinnendruck (DI) und Umgebungsdruck (DU) im Wesentlichen gleich sind.Hand tool transmission closure (10) according to claim 6,
characterized in that the base body (1) has an annular pressure distribution chamber (5), which is closed by the pressure valve (3) designed as a plate-shaped membrane, when the transmission internal pressure (DI) and ambient pressure (DU) are substantially equal.
dadurch gekennzeichnet, dass der Grundkörper (1) einen Dichtring (6) aufweist, der angeordnet ist, den Grundkörper (1) umfangsseitig zur Getriebegehäuseöffnung (70) abzudichten.Hand tool transmission closure (10) according to one of the preceding claims,
characterized in that the base body (1) has a sealing ring (6) which is arranged, the base body (1) circumferentially to the transmission housing opening (70) to seal.
dadurch gekennzeichnet, dass der Grundkörper (1) als Stopfen ausgebildet ist.Hand tool transmission closure (10) according to one of the preceding claims,
characterized in that the base body (1) is designed as a plug.
dadurch gekennzeichnet, dass die Handwerkzeugmaschine (100) einen Handwerkzeuggetriebeverschluss (10) nach einem der vorangehende Ansprüche aufweist.Hand tool (100), in particular hammer drill or combi hammer, with a housing (80) enclosed by a tool housing (80) which is accessible via a gear housing opening (70),
characterized in that the hand tool machine (100) comprises a hand tool transmission closure (10) according to one of the preceding claims.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14194224.3A EP3023354A1 (en) | 2014-11-21 | 2014-11-21 | Handheld tool gear closure and handheld machine tool |
EP15798069.9A EP3221230B1 (en) | 2014-11-21 | 2015-11-20 | Handheld tool gear closure and handheld machine tool |
US15/527,236 US10562171B2 (en) | 2014-11-21 | 2015-11-20 | Hand-held power tool transmission closure and hand-held power tool |
PCT/EP2015/077192 WO2016079284A1 (en) | 2014-11-21 | 2015-11-20 | Hand-held machine tool transmission closure and hand-held machine tool |
CN201580063453.1A CN107000196B (en) | 2014-11-21 | 2015-11-20 | Hand tool driver closing device and hand tool machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14194224.3A EP3023354A1 (en) | 2014-11-21 | 2014-11-21 | Handheld tool gear closure and handheld machine tool |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3023354A1 true EP3023354A1 (en) | 2016-05-25 |
Family
ID=52000641
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14194224.3A Withdrawn EP3023354A1 (en) | 2014-11-21 | 2014-11-21 | Handheld tool gear closure and handheld machine tool |
EP15798069.9A Active EP3221230B1 (en) | 2014-11-21 | 2015-11-20 | Handheld tool gear closure and handheld machine tool |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15798069.9A Active EP3221230B1 (en) | 2014-11-21 | 2015-11-20 | Handheld tool gear closure and handheld machine tool |
Country Status (4)
Country | Link |
---|---|
US (1) | US10562171B2 (en) |
EP (2) | EP3023354A1 (en) |
CN (1) | CN107000196B (en) |
WO (1) | WO2016079284A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4039414A1 (en) * | 2021-02-09 | 2022-08-10 | Hilti Aktiengesellschaft | Electro-pneumatic percussion mechanism |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3023204A1 (en) * | 2014-11-21 | 2016-05-25 | HILTI Aktiengesellschaft | Handheld tool gear closure and handheld machine tool |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0133520A2 (en) * | 1983-08-11 | 1985-02-27 | Jacob Berg GmbH & Co. KG | Container closure with venting means |
GB2380442A (en) * | 2001-09-14 | 2003-04-09 | Bosch Gmbh Robert | A hand-held machine tool with pressure compensating device |
US20070251913A1 (en) * | 2006-04-28 | 2007-11-01 | Silgan Plastics Corporation | Container with venting closure assembly |
EP2433755A1 (en) * | 2009-05-20 | 2012-03-28 | Makita Corporation | Powered tool |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3422982A (en) * | 1967-04-17 | 1969-01-21 | Dana Corp | Breather for a gear housing |
US3693651A (en) * | 1970-08-19 | 1972-09-26 | Vernay Laboratories | Valve assembly |
US3866789A (en) * | 1974-01-16 | 1975-02-18 | Reliance Electric Co | Vent plug for gear case |
DE4300441C1 (en) * | 1993-01-09 | 1993-12-02 | Inst Maschinenelemente Uni Stu | Ventilation valve for transmission housing - has venting valve set at upper end of oil collecting chamber with drain valve back into housing. |
JP5560004B2 (en) * | 2009-08-05 | 2014-07-23 | 株式会社マキタ | Work tools |
CN101949444A (en) | 2010-09-29 | 2011-01-19 | 上海汽车变速器有限公司 | Oil baffle type ventilation mechanism |
CN202176700U (en) | 2011-07-28 | 2012-03-28 | 比亚迪股份有限公司 | Ventilation plug and automobile gearbox with ventilation plug |
JP5536813B2 (en) | 2012-02-22 | 2014-07-02 | 富士重工業株式会社 | Breather equipment |
CN103358287B (en) | 2012-03-31 | 2016-04-06 | 苏州宝时得电动工具有限公司 | Electric hammer |
CN202746552U (en) | 2012-08-20 | 2013-02-20 | 盛瑞传动股份有限公司 | Breather for automatic transmission |
CN104769366B (en) * | 2012-09-14 | 2018-03-23 | 英格索尔-兰德公司 | Air-breather |
CN203962943U (en) | 2014-07-04 | 2014-11-26 | 上海汽车变速器有限公司 | For the nylon breather plug of speed changer |
CN204491366U (en) | 2014-12-17 | 2015-07-22 | 徐工集团工程机械股份有限公司道路机械分公司 | Vibrating wheels ventilating structure |
-
2014
- 2014-11-21 EP EP14194224.3A patent/EP3023354A1/en not_active Withdrawn
-
2015
- 2015-11-20 WO PCT/EP2015/077192 patent/WO2016079284A1/en active Application Filing
- 2015-11-20 CN CN201580063453.1A patent/CN107000196B/en active Active
- 2015-11-20 EP EP15798069.9A patent/EP3221230B1/en active Active
- 2015-11-20 US US15/527,236 patent/US10562171B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0133520A2 (en) * | 1983-08-11 | 1985-02-27 | Jacob Berg GmbH & Co. KG | Container closure with venting means |
GB2380442A (en) * | 2001-09-14 | 2003-04-09 | Bosch Gmbh Robert | A hand-held machine tool with pressure compensating device |
US20070251913A1 (en) * | 2006-04-28 | 2007-11-01 | Silgan Plastics Corporation | Container with venting closure assembly |
EP2433755A1 (en) * | 2009-05-20 | 2012-03-28 | Makita Corporation | Powered tool |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4039414A1 (en) * | 2021-02-09 | 2022-08-10 | Hilti Aktiengesellschaft | Electro-pneumatic percussion mechanism |
WO2022171322A1 (en) * | 2021-02-09 | 2022-08-18 | Hilti Aktiengesellschaft | Electropneumatic percussion mechanism |
Also Published As
Publication number | Publication date |
---|---|
CN107000196B (en) | 2021-05-11 |
CN107000196A (en) | 2017-08-01 |
EP3221230B1 (en) | 2018-10-24 |
WO2016079284A1 (en) | 2016-05-26 |
US10562171B2 (en) | 2020-02-18 |
EP3221230A1 (en) | 2017-09-27 |
US20170334057A1 (en) | 2017-11-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102015205556A1 (en) | PISTON ARRANGEMENT FOR SHOCK ABSORBER | |
DE102010012918A1 (en) | Clamping device for a endless drive means with a combination valve | |
DE102014015946A1 (en) | Cooling duct cover and piston provided with a cooling channel cover | |
DE102005051472A1 (en) | Hydraulic tensioner with a venting mechanism | |
EP3221230B1 (en) | Handheld tool gear closure and handheld machine tool | |
DE2251861A1 (en) | COMBINATION OF THE WORK SPRING GUIDE AND THE BREAKING DEVICE FOR AUTOMATIC GUNS | |
DE2015270A1 (en) | Chisel device for a hammer drill to produce a blind hole | |
DE102013003405A1 (en) | overflow | |
DE102010051018A1 (en) | cylinder device | |
DE2035452B2 (en) | Device for driving fasteners | |
DE102011106514B4 (en) | Pyrotechnic actuator with ventilation, hood stand and belt tensioner with such an actuator | |
DE112017002642T5 (en) | Assembly for producing a thermostatic element | |
DE900061C (en) | Arrangement of plate valves on telescopic shock absorbers, especially for motor vehicles | |
EP3098028A1 (en) | Handheld tool gear closure and handheld machine tool | |
EP3221091B1 (en) | Handheld tool gear closure and handheld machine tool | |
DE102016203770A1 (en) | Flüssigkeitsnebelabscheideeinrichtung | |
DE202005005912U1 (en) | Compressed gas powered firearm | |
DE202014105513U1 (en) | Poppet valve for a compressor | |
DE1233681B (en) | Closure for ventilating and ventilating oil-carrying spaces, especially for gear boxes | |
EP3098029A1 (en) | Handheld tool gear closure and handheld machine tool | |
DE102010031037A1 (en) | Vibration damper, has valves movable by pressure in operating chambers against force of springs in closing position, designed as seat valves and arranged within hollow piston rod, and sleeve fixed within hollow piston rod | |
DE102016120887A1 (en) | Self-contained chain tensioner with damping valve | |
DE10213865B4 (en) | Explosion protection valve | |
DE102010010725A1 (en) | Hydraulic clamping element, has ventilation device limiting vent channel and with surface area deformed in pressure chamber such that surface area rests on other surface area and closes vent channel | |
DE102018215184B4 (en) | damper device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20161126 |