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EP0734822A2 - Wall grooving device - Google Patents

Wall grooving device Download PDF

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Publication number
EP0734822A2
EP0734822A2 EP96810078A EP96810078A EP0734822A2 EP 0734822 A2 EP0734822 A2 EP 0734822A2 EP 96810078 A EP96810078 A EP 96810078A EP 96810078 A EP96810078 A EP 96810078A EP 0734822 A2 EP0734822 A2 EP 0734822A2
Authority
EP
European Patent Office
Prior art keywords
housing
stop
pawl
locking
slide
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
Application number
EP96810078A
Other languages
German (de)
French (fr)
Other versions
EP0734822A3 (en
EP0734822B1 (en
Inventor
Hans Rupprecht
Armin Below
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0734822A2 publication Critical patent/EP0734822A2/en
Publication of EP0734822A3 publication Critical patent/EP0734822A3/en
Application granted granted Critical
Publication of EP0734822B1 publication Critical patent/EP0734822B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/183—Hand tools, e.g. portable, motor driven

Definitions

  • the invention relates to a wall slot device with a housing having two handles, which contains a drive unit for a slot tool consisting of at least one disk and can be pivoted relative to a slide about a pivot bearing arranged in its first end region against the force of a spring parallel to the disk plane of the slot tool, wherein the carriage in its second end region has a locking rail projecting in the direction of the housing and serving to accommodate an adjustable depth stop, and the housing has a locking pawl which interacts with the locking rail and can be actuated by a locking switch arranged on one of the handles,
  • electrical pipes are to be laid that serve to accommodate individual electrical cables.
  • the electrical pipes are usually fastened in the formwork before it is poured with concrete.
  • wall slot devices are used, with the help of which two parallel slots are milled into the brick wall. The depth and the distance between the two slots depend on the number and diameter of the electrical pipes to be laid. Using a suitable stripping tool, the part of the brick wall located between the slots is broken out, so that a receiving groove for receiving the electrical tubes is created.
  • a wall slot device with a housing, a drive unit connected to the housing for a slot tool consisting of at least one disk and a slide is known.
  • the housing In the starting position, the housing is in an oblique position with respect to the slide, so that the slot tool does not protrude beyond the side of the slide lying on a surface.
  • the housing is parallel to the disk plane of the slot tool by an in A pivot bearing arranged in a first end region of the slide can be pivoted into a working position against the force of a spring element, with a free end of a locking rail projecting from the slide in the direction of the housing resting against a locking tongue of a pawl arranged in the housing to limit the pivoting movement between the housing and the slide.
  • This pawl is connected to a locking switch arranged in a handle which, when actuated, causes this pawl to rotate about its longitudinal axis and thus also the locking tongue against the force of a spring part. When you release the locking switch, the pawl turns back to its original position.
  • a depth stop is arranged on the locking rail, which can be adjusted in stages along the locking rail.
  • the invention has for its object to provide a wall slot device with which a fatigue-free, simple and safe production of slots with constant depth in substrates, in particular masonry, is possible.
  • the object is achieved in that the depth stop can be fixed on the pawl.
  • the housing is pivoted with respect to the slide and thus also with respect to the locking rail.
  • the depth stop is fixed on the pawl of the housing. A lifting of the housing from the depth stop is no longer possible, although the spring arranged between the housing and the slide is under prestress. The force emanating from the spring therefore does not have to be additionally applied during the slitting process.
  • the housing is expediently fixed to the depth stop with the aid of the tefen stop, which has a locking arm which projects in the direction of the pawl and cooperates with a stop of the pawl.
  • the pawl is preferably provided with a guide contour, which causes the locking arm to deflect elastically. As a result, the locking arm can laterally deflect when the housing is pivoted relative to the slide before the connection between the locking arm and the stop is established.
  • the stop arranged on the pawl is formed by a stop surface which faces away from the locking rail or the slide.
  • the free end of the locking arm is angled and designed as a stop edge running essentially parallel to the stop surface of the pawl. So that this type of fixing is possible when a boundary surface of the housing bears against the depth stop, the distance between the stop surface of the depth stop facing the pawl and the stop edge of the locking arm advantageously corresponds at least to the distance between the boundary surface of the housing facing the depth stop and the stop surface trained stop of the pawl.
  • the locking arm is preferably made of spring steel.
  • the wall slot device shown in FIG. 1 is composed of a housing 1, a drive unit 2 connected to the housing 1 for a slot tool 4 consisting of at least one disk 5, and a slide 3.
  • the housing 1 is parallel to the disk plane of the slot tool 4 pivotable about a pivot bearing 6 arranged in a first end region of the device against the force of a spring 7.
  • rollers 23 are arranged, which are intended to better move the carriage 3 on a surface U to be machined.
  • the rollers 23 are arranged in such a way that the carriage 3 or the entire device can only be moved in the directions running parallel to the longitudinal extent of the device.
  • a gear, not shown, connected to the drive unit 2 has an output shaft 24 which extends at right angles to the longitudinal direction of the housing 1 and to which two disks 5 forming the slot tool 4 are fastened.
  • the housing 1 Both in the first end region connected to the slide 3 via the rotary bearing 6 and in a second end region, the housing 1 has a projecting handle 9, 10.
  • the handle 10 arranged in the first end region of the device has an electrical switch 25 which sets the drive unit 2 in motion when actuated.
  • the handle 9 arranged in the second end region of the device has a locking switch 11 which, when actuated, rotates a pawl 12 which serves to limit the pivoting movement between the housing 1 and the slide 3 against the force of a spring element 8.
  • a locking switch 11 In the locked position of the pawl 12 - the locking switch 11 is not pressed - as shown in FIG. 2, a locking tongue 13 of the pawl 12 is supported on the free end of a locking rail 17 projecting from the slide 3 in the direction of the housing 1.
  • a depth stop 18 Arranged on this locking rail 17 is a depth stop 18, which has a clamping region (not shown in any more detail) and can be adjusted in stages along this locking rail 17.
  • the clamping area interacts positively with a toothed area 29 of the locking rail 17.
  • the depth stop 18 can be set to a desired slot depth from the slide 3 protruding setting scale 19.
  • the pawl 12 By actuating the locking switch 11, as shown in FIG. 3, the pawl 12 is rotated from a locking position into an open position with the aid of transmission elements. In this way, the locking tongue 13 arranged on the pawl 12 releases the locking rail 17 and the housing 1 can be pivoted relative to the locking rail 17 or relative to the slide 3.
  • the housing 1 is fixed relative to the depth stop 18 set to the desired slot depth how the locking switch 11 is operated.
  • the device is thus in the working position and the disks 5 of the slotting tool 4 protrude beyond the side of the slider 3 lying on the surface U to be machined by the amount that can be read from the setting scale 19.
  • the housing 1 is fixed on the depth stop 18 with the aid of the depth stop 18, which has a locking arm 28 which projects in the direction of the pawl 12 and cooperates with a stop 14 of the pawl 12.
  • the stop 14 is formed by a stop surface which faces away from the locking rail 17 or the slide 3.
  • the free end of the locking arm 28 is angled and designed as a stop edge 21 which extends essentially parallel to the stop 14 of the pawl 12 and which allows the stop 14 to reach behind and thus fix the housing 1 to the depth stop 18 and thus also to the slide 3.
  • the stop 14 of the pawl 12 can only reach behind if, when the housing 1 is pivoted relative to the slide 3, the stop 14 is displaced essentially parallel to the stop edge 21 of the locking arm 28.
  • the pawl 12 has a guide contour 15, which causes an elastic deflection of the locking arm 28 with simultaneous, substantially parallel displacement of the stop edge 21.
  • the angled free end of the locking arm 28 bears against the guide contour 15 of the pawl 12 and is from this laterally offset.
  • the locking arm 28 formed from an elastic material is biased.
  • the distance A1 advantageously corresponds to a stop surface 27 of the depth stop facing the pawl 12 18 and a stop edge 21 of the locking arm 28 at least the distance A2 between a limiting surface 26 of the housing 1 facing the depth stop 18 and the stop 14 of the pawl 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Sewage (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Vending Machines For Individual Products (AREA)
  • Formation And Processing Of Food Products (AREA)

Abstract

The machine for cutting a slot in a wall has two handles (9,10) on a housing (1) containing a drive (2) for the cutting disc (5). It pivots about one end of a trolley (3) in a bearing (6) against the force of a spring (7). At the other end of the trolley is a rail (17) used for locking the housing so that a defined depth of cut is given. The housing has a latch (12) operated by a switch in one of the handles. The boss (18) marking the depth of cut has an arm (28) protruding upwards with which the latch works. The arm is made from spring steel.

Description

Die Erfindung betrifft ein Mauerschlitzgerät mit einem zwei Handgriffe aufweisenden Gehäuse, das eine Antriebseinheit für ein aus wenigstens einer Scheibe bestehendes Schlitzwerkzeug enthält und gegenüber einem Schlitten um ein in seinem ersten Endbereich angeordnetes Drehlager gegen die Kraft einer Feder parallel zur Scheibenebene des Schlitzwerkzeuges verschwenkbar ist, wobei der Schlitten in seinem zweiten Endbereich eine in Richtung Gehäuse abragende, der Aufnahme eines verstellbaren Tiefenanschlages dienende Verriegelungsschiene und das Gehäuse eine mit der Verriegelungsschiene zusammenwirkende Sperrklinke aufweist, die von einem an einem der Handgriffe angeordneten Verriegelungsschalter betätigbar ist,The invention relates to a wall slot device with a housing having two handles, which contains a drive unit for a slot tool consisting of at least one disk and can be pivoted relative to a slide about a pivot bearing arranged in its first end region against the force of a spring parallel to the disk plane of the slot tool, wherein the carriage in its second end region has a locking rail projecting in the direction of the housing and serving to accommodate an adjustable depth stop, and the housing has a locking pawl which interacts with the locking rail and can be actuated by a locking switch arranged on one of the handles,

Für Elektro-Installationen in Neu-, Um- oder Zubauten sind Elektrorohre zu verlegen, die der Aufnahme einzelner Elektrokabel dienen. Bei betonierten Bauteilen wie Böden, Decken oder Wänden werden die Elektrorohre in der Regel in der Schalung befestigt, bevor diese mit Beton ausgegossen wird. Für die weitere Verlegung der aus den betonierten Bauteilen ragenden Elektrorohre in gemauerten Wänden werden Mauerschlitzgeräte verwendet, mit deren Hilfe zwei parallel zueinander verlaufende Schlitze in die gemauerte Wand eingefräst werden. Die Tiefe und der Abstand beider Schlitze voneinander hängen ab von der Anzahl und dem Durchmesser der zu verlegenden Elektrorohre. Mittels eines geeigneten Ausbrechwerkzeuges wird der sich zwischen den Schlitzen befindliche Teil der gemauerten Wand ausgebrochen, so dass eine der Aufnahme der Elektrorohre dienende Aufnahmenut entsteht.For electrical installations in new buildings, conversions or additions, electrical pipes are to be laid that serve to accommodate individual electrical cables. In the case of concrete components such as floors, ceilings or walls, the electrical pipes are usually fastened in the formwork before it is poured with concrete. For the further laying of the electrical pipes protruding from the concrete components in brick walls, wall slot devices are used, with the help of which two parallel slots are milled into the brick wall. The depth and the distance between the two slots depend on the number and diameter of the electrical pipes to be laid. Using a suitable stripping tool, the part of the brick wall located between the slots is broken out, so that a receiving groove for receiving the electrical tubes is created.

Aus der DE-OS 38 15 245 ist ein Mauerschlitzgerät mit einem Gehäuse, eine mit dem Gehäuse in Verbindung stehende Anstriebseinheit für ein aus wenigstens einer Scheibe bestehendes Schlitzwerkzeug und einem Schlitten bekannt. In der Ausgangsstellung nimmt das Gehäuse gegenüber dem Schlitten eine schräge Lage ein, so dass das Schlitzwerkzeug die an einem Untergrund aufliegende Seite des Schlittens nicht überragt. Das Gehäuse ist parallel zur Scheibenebene des Schlitzwerkzeuges um ein in einem ersten Endbereich des Schlittens angeordnetes Drehlager gegen die Kraft eines Federelementes in eine Arbeitsposition verschwenkbar, wobei zur Begrenzung der Schwenkbewegung zwischen Gehäuse und Schlitten eine vom Schlitten in Richtung Gehäuse abragende Verriegelungsschiene mit ihrem freien Ende an einer Sperrzunge einer im Gehäuse angeordneten Sperrklinke anliegt. Diese Sperrklinke ist mit einem in einem Handgriff angeordneten Verriegungsschalter verbunden, der beim Betätigen ein Verdrehen dieser Sperrklinke um ihre Längsachse und somit auch der Sperrzunge gegen die Kraft eines Federteiles bewirkt. Beim Loslassen des Verriegelungsschalters dreht sich die Sperrklinke in ihre Ausgangslage zurück. Auf der Verriegelungsschiene ist ein Tiefenanschlag angeordnet, der entlang der Verriegelungsschiene stufenweise verstellbar ist.From DE-OS 38 15 245 a wall slot device with a housing, a drive unit connected to the housing for a slot tool consisting of at least one disk and a slide is known. In the starting position, the housing is in an oblique position with respect to the slide, so that the slot tool does not protrude beyond the side of the slide lying on a surface. The housing is parallel to the disk plane of the slot tool by an in A pivot bearing arranged in a first end region of the slide can be pivoted into a working position against the force of a spring element, with a free end of a locking rail projecting from the slide in the direction of the housing resting against a locking tongue of a pawl arranged in the housing to limit the pivoting movement between the housing and the slide. This pawl is connected to a locking switch arranged in a handle which, when actuated, causes this pawl to rotate about its longitudinal axis and thus also the locking tongue against the force of a spring part. When you release the locking switch, the pawl turns back to its original position. A depth stop is arranged on the locking rail, which can be adjusted in stages along the locking rail.

Bei diesem bekannten Gerät muss die Bedienungsperson neben der für den Schlitzvorgang notwendigen hohen Anpresskraft auch jene Kraft während des gesamten Schlitzvorganges aufbringen, die für das Zusammendrücken der zwischen dem Schlitten und dem Gehäuse angeordneten Feder notwendig ist. Diese zusätzliche Belastung führt schnell zu Ermüdungserscheinungen, so dass die Anpresskraft nachlässt. Die Folge davon sind unterschiedlich tiefe Schlitze.In this known device, the operator must apply not only the high contact pressure required for the slitting process but also the force during the entire slitting process which is necessary for compressing the spring arranged between the carriage and the housing. This additional load quickly leads to signs of fatigue, so that the contact pressure decreases. The result of this are slots of different depths.

Der Erfindung liegt die Aufgabe zugrunde ein Mauerschlitzgerat zu schaffen, mit dem ein ermüdungsfreies, einfaches und sicheres Herstellen von Schlitzen mit gleichbleibender Tiefe in Untergründen, insbesondere Mauerwerken, möglich ist.The invention has for its object to provide a wall slot device with which a fatigue-free, simple and safe production of slots with constant depth in substrates, in particular masonry, is possible.

Erfindungsgemäss wir die Aufgabe dadurch gelöst, dass der Tiefenanschlag an der Sperrklinke festlegbar ist.According to the invention, the object is achieved in that the depth stop can be fixed on the pawl.

Zum Herstellen der Schlitze in dem Untergrund wird das Gehäuse gegenüber dem Schlitten und somit auch gegenüber der Verriegelungsschiene verschwenkt. Sobald das Gehäuse an dem Tiefenanschlag zur Anlage gelangt, erfolgt eine Festlegung des Tiefenanschlages an der Sperrklinke des Gehäuses. Ein Abheben des Gehäuses von dem Tiefenanschlag ist dadurch nicht mehr möglich, obwohl die zwischen dem Gehäuse und dem Schlitten angeordnete Feder unter Vorspannung steht. Die von der Feder ausgehende Kraft muss somit während des Schlitzvorganges nicht zusätzlich aufgebracht werden.To produce the slots in the base, the housing is pivoted with respect to the slide and thus also with respect to the locking rail. As soon as the housing comes into contact with the depth stop, the depth stop is fixed on the pawl of the housing. A lifting of the housing from the depth stop is no longer possible, although the spring arranged between the housing and the slide is under prestress. The force emanating from the spring therefore does not have to be additionally applied during the slitting process.

Das Festlegen des Gehäuses an dem Tiefenanschlag erfolgt zweckmässigerweise mit Hilfe des Tefenanschlages, der einen in Richtung Sperrklinke abragenden, mit einem Anschlag der Sperrklinke zusammenwirkenden Verriegelungsarm aufweist.The housing is expediently fixed to the depth stop with the aid of the tefen stop, which has a locking arm which projects in the direction of the pawl and cooperates with a stop of the pawl.

Vorzugsweise ist die Sperrklinke mit einer Führungskontur versehen, die ein elastisches Ausweichen des Verriegelungsarmes bewirkt. Dadurch kann der Verriegelungsarm beim Verschwenken des Gehäuses gegenüber dem Schlitten vor der Herstellung der Verbindung zwischen Verriegelungsarm und Anschlag seitlich ausweichen.The pawl is preferably provided with a guide contour, which causes the locking arm to deflect elastically. As a result, the locking arm can laterally deflect when the housing is pivoted relative to the slide before the connection between the locking arm and the stop is established.

Der an der Sperrklinke angeordnete Anschlag ist gebildet von einer Anschlagfläche, die von der Verriegelungsschiene bzw. dem Schlitten abgewandt ist. Das freie Ende des Verriegelungsarmes ist abgewinkelt und als im wesentlichen parallel zur Anschlagfläche der Sperrklinke verlaufende Anschlagkante ausgebildet. Damit diese Art der Festlegung möglich ist, wenn eine Begrenzungsfläche des Gehäuses an dem Tiefenanschlages anliegt, entspricht vorteilhafterweise der Abstand zwischen der der Sperrklinke zugewandten Anschlagfläche des Tiefenanschlages und der Anschlagkante des Verriegelungsarmes wenigstens dem Abstand zwischen der dem Tiefenanschlag zugewandten Begrenzungsfläche des Gehäuses und dem als Anschlagfläche ausgebildeten Anschlag der Sperrklinke.The stop arranged on the pawl is formed by a stop surface which faces away from the locking rail or the slide. The free end of the locking arm is angled and designed as a stop edge running essentially parallel to the stop surface of the pawl. So that this type of fixing is possible when a boundary surface of the housing bears against the depth stop, the distance between the stop surface of the depth stop facing the pawl and the stop edge of the locking arm advantageously corresponds at least to the distance between the boundary surface of the housing facing the depth stop and the stop surface trained stop of the pawl.

Aus funktionellen Gründen ist der Verriegelungsarm vorzugsweise aus Federstahl gebildet.For functional reasons, the locking arm is preferably made of spring steel.

Die Erfindung wird anhand von Zeichnungen, die ein Ausführungsbeispiel wiedergeben, näher erläutert. Es zeigen:

Fig. 1
ein erfindungsgemässes Mauerschlitzgerät in der Ruhestellung;
Fig. 2 - 5
einen Schnitt durch den Verriegelungsmechanismus des Mauerschlitzgerätes gemäss Fig. 1; das Gehäuse ist gegenüber dem Schlitten unterschiedlich geneigt angeordnet.
The invention is explained in more detail with reference to drawings which show an exemplary embodiment. Show it:
Fig. 1
a wall slot device according to the invention in the rest position;
Figs. 2-5
a section through the locking mechanism of the wall slot device according to FIG. 1; the housing is arranged at a different angle to the slide.

Das in Fig. 1 dargestellte Mauerschlitzgerät setzt sich aus einem Gehäuse 1, einer mit dem Gehäuse 1 in Verbindung stehenden Antriebseinheit 2 für ein aus wenigstens einer Scheibe 5 bestehendes Schlitzwerkzeug 4 und einem Schlitten 3 zusammen. Gegenüber dem Schlitten 3 ist das Gehäuse 1 parallel zur Scheibenebene des Schlitzwerkzeuges 4 um ein in einem ersten Endbereich des Gerätes angeordnetes Drehlager 6 gegen die Kraft einer Feder 7 verschwenkbar.The wall slot device shown in FIG. 1 is composed of a housing 1, a drive unit 2 connected to the housing 1 for a slot tool 4 consisting of at least one disk 5, and a slide 3. Compared to the slide 3, the housing 1 is parallel to the disk plane of the slot tool 4 pivotable about a pivot bearing 6 arranged in a first end region of the device against the force of a spring 7.

In den Ecken des Schlittens 3 sind Rollen 23 angeordnet, die dem besseren Verschieben des Schlittens 3 auf einem zu bearbeitenden Untergrund U dienen sollen. Die Rollen 23 sind derartig angeordnet, dass ein Verschieben des Schlittens 3 bzw. des gesamten Gerätes nur in den parallel zur Längserstreckung des Gerätes verlaufenden Richtungen erfolgen kann.In the corners of the carriage 3, rollers 23 are arranged, which are intended to better move the carriage 3 on a surface U to be machined. The rollers 23 are arranged in such a way that the carriage 3 or the entire device can only be moved in the directions running parallel to the longitudinal extent of the device.

Ein mit der Antriebseinheit 2 in Verbindung stehendes, nicht dargestelltes Getriebe weist eine Abtriebswelle 24 auf, die rechtwinklig zur Längsrichtung des Gehäuses 1 verläuft und an der zwei, das Schlitzwerkzeug 4 bildende Scheiben 5 befestigt sind.A gear, not shown, connected to the drive unit 2 has an output shaft 24 which extends at right angles to the longitudinal direction of the housing 1 and to which two disks 5 forming the slot tool 4 are fastened.

Auf der Oberseite des Gehäuses 1 ist ein Absaugstutzen 20 zwischen beiden Handgriffen 9. 10 angeordnet, an dem mittels Halterungselementen 22 ein zwischen den Handgriffen 9, 10 aus dem Gehäuse 1 ragendes Elektrokabel 16 anklipsbar ist.On the upper side of the housing 1 there is a suction nozzle 20 between the two handles 9. 10, to which an electrical cable 16 protruding from the housing 1 between the handles 9, 10 can be clipped by means of mounting elements 22.

Sowohl in dem über das Drehlager 6 mit dem Schlitten 3 verbundenen ersten Endbereich als auch in einem zweiten Endbereich besitzt das Gehäuse 1 jeweils einen abragenden Handgriff 9, 10.Both in the first end region connected to the slide 3 via the rotary bearing 6 and in a second end region, the housing 1 has a projecting handle 9, 10.

Der im ersten Endbereich des Gerätes angeordnete Handgriff 10 weist einen Elektroschalter 25 auf, der bei Betätigung die Antriebseinheit 2 in Bewegung setzt.The handle 10 arranged in the first end region of the device has an electrical switch 25 which sets the drive unit 2 in motion when actuated.

Der im zweiten Endbereich des Gerätes angeordnete Handgriff 9 besitzt einen Verriegelungsschalter 11, der bei Betätigung eine der Begrenzung der Schwenkbewegung zwischen Gehäuse 1 und Schlitten 3 dienende Sperrklinke 12 gegen die Kraft eines Federelementes 8 verdreht. In der verriegelten Stellung der Sperrklinke 12 - der Verriegelungsschalter 11 ist nicht gedrückt - stützt sich, wie in Fig. 2 dargestellt, eine Sperrzunge 13 der Sperrklinke 12 am freien Ende einer vom Schlitten 3 in Richtung Gehäuse 1 abragenden Verriegelungsschiene 17 ab.The handle 9 arranged in the second end region of the device has a locking switch 11 which, when actuated, rotates a pawl 12 which serves to limit the pivoting movement between the housing 1 and the slide 3 against the force of a spring element 8. In the locked position of the pawl 12 - the locking switch 11 is not pressed - as shown in FIG. 2, a locking tongue 13 of the pawl 12 is supported on the free end of a locking rail 17 projecting from the slide 3 in the direction of the housing 1.

An dieser Verriegelungsschiene 17 ist ein, einen nicht näher dargestellten Klemmbereich aufweisenden Tiefenanschlag 18 angeordnet, der entlang dieser Verriegelungsschiene 17 stufenweise verstellbar ist. Der Klemmbereich wirkt dabei formschlüssig mit einem verzahnten Bereich 29 der Verriegelungsschiene 17 zusammen. Anhand einer ebenfalls vom Schlitten 3 abragenden Einstellskala 19 kann der Tiefenanschlag 18 auf eine gewünschte Schlitztiefe eingestellt werden.Arranged on this locking rail 17 is a depth stop 18, which has a clamping region (not shown in any more detail) and can be adjusted in stages along this locking rail 17. The clamping area interacts positively with a toothed area 29 of the locking rail 17. Using one too the depth stop 18 can be set to a desired slot depth from the slide 3 protruding setting scale 19.

Durch das Betätigen des Verriegelungsschalters 11, wie in Fig. 3 dargestellt, wird die Sperrklinke 12 mit Hilfe von Übertragungselementen aus einer Verriegelungsstellung in eine Öffnungsstellung verdreht. Auf diese Weise gibt die an der Sperrklinke 12 angeordnete Sperrzunge 13 die Verriegelungsschiene 17 frei und das Gehäuse 1 kann gegenüber der Verriegelungsschiene 17 bzw. gegenüber dem Schlitten 3 verschwenkt werden.By actuating the locking switch 11, as shown in FIG. 3, the pawl 12 is rotated from a locking position into an open position with the aid of transmission elements. In this way, the locking tongue 13 arranged on the pawl 12 releases the locking rail 17 and the housing 1 can be pivoted relative to the locking rail 17 or relative to the slide 3.

Gelangt wie in Fig. 5 dargestellt eine dem Tiefenanschlag 18 zugewandte Begrenzungsfläche 26 des Gehäuses 3 an einer Anschlagfläche 27 des auf der Verriegelungschiene 17 angeordneten Tiefenanschlags 18 zur Anlage, so erfolgt eine Festlegung des Gehäuses 1 gegenüber dem auf die gewünschte Schlitztiefe eingestellten Tiefenanschlag 18 so lange, wie der Verriegelungsschalter 11 betätigt wird. Das Gerät befindet sich somit in Arbeitsposition und die Scheiben 5 des Schlitzwerkzeuges 4 überragen die auf dem zu bearbeitenden Untergrund U aufliegende Seite des Schlittens 3 um jenen Betrag, der von der Einstellskala 19 ablesbar ist. Das Festlegen des Gehäuses 1 an dem Tiefenanschlag 18 erfolgt mit Hilfe des Tiefenanschlages 18, der einen in Richtung Sperrklinke 12 abragenden, mit einem Anschlag 14 der Sperrklinke 12 zusammenwirkenden Verriegelungsarm 28 aufweist. Der Anschlag 14 ist gebildet von einer Anschlagfläche, die von der Verriegelungsschiene 17 bzw. dem Schlitten 3 abgewandt ist. Das freie Ende des Verriegelungsarmes 28 ist abgewinkelt und als im wesentlichen parallel zum Anschlag 14 der Sperrklinke 12 verlaufende Anschlagkante 21 ausgebildet, die ein Hintergreifen des Anschlages 14 und somit ein Festlegen des Gehäuses 1 an dem Tiefenanschlag 18 und somit auch an dem Schlitten 3 ermöglicht.If, as shown in FIG. 5, a limiting surface 26 of the housing 3 facing the depth stop 18 comes to rest against a stop surface 27 of the depth stop 18 arranged on the locking rail 17, the housing 1 is fixed relative to the depth stop 18 set to the desired slot depth how the locking switch 11 is operated. The device is thus in the working position and the disks 5 of the slotting tool 4 protrude beyond the side of the slider 3 lying on the surface U to be machined by the amount that can be read from the setting scale 19. The housing 1 is fixed on the depth stop 18 with the aid of the depth stop 18, which has a locking arm 28 which projects in the direction of the pawl 12 and cooperates with a stop 14 of the pawl 12. The stop 14 is formed by a stop surface which faces away from the locking rail 17 or the slide 3. The free end of the locking arm 28 is angled and designed as a stop edge 21 which extends essentially parallel to the stop 14 of the pawl 12 and which allows the stop 14 to reach behind and thus fix the housing 1 to the depth stop 18 and thus also to the slide 3.

Wie die Fig. 4 zeigt, kann ein Hintergreifen des Anschlages 14 der Sperrklinke 12 nur dann erfolgen, wenn beim Verschwenken des Gehäuses 1 gegenüber dem Schlitten 3 eine im wesentlichen parallele Verschiebung des Anschlages 14 gegenüber der Anschlagkante 21 des Verriegelungsarmes 28 erfolgt. Die Sperrklinke 12 weist eine Führungskontur 15 auf, die ein elastisches Ausweichen des Verriegelungsarmes 28 unter gleichzeitiger, im wesentlichen paralleler Versetzung der Anschlagkante 21 bewirkt. Während des Verschwenkens des Gehäuses 1 liegt das abgewinkelte freie Ende des Verriegelungsarmes 28 an der Führungskontur 15 der Sperrklinke 12 an und wird von dieser seitlich versetzt. Dabei wird der aus einem elastischen Material gebildete Verriegelungsarm 28 vorgespannt. Beim Erreichen der Arbeitsposition - die Begrenzungsfläche 26 des Gehäuses 1 liegt an der Anschlagfläche 27 des Tiefenanschlages 18 an - verlässt das freie Ende des Verriegelungsarmes 28 die Führungskontur 15 der Sperrklinke 12 und der Verriegelungsarm 28 federt in seine ursprüngliche Lage zurück und hintergreift dabei den Anschlag 14 der Sperrklinke 12.As shown in FIG. 4, the stop 14 of the pawl 12 can only reach behind if, when the housing 1 is pivoted relative to the slide 3, the stop 14 is displaced essentially parallel to the stop edge 21 of the locking arm 28. The pawl 12 has a guide contour 15, which causes an elastic deflection of the locking arm 28 with simultaneous, substantially parallel displacement of the stop edge 21. During the pivoting of the housing 1, the angled free end of the locking arm 28 bears against the guide contour 15 of the pawl 12 and is from this laterally offset. The locking arm 28 formed from an elastic material is biased. When the working position is reached - the boundary surface 26 of the housing 1 lies against the stop surface 27 of the depth stop 18 - the free end of the locking arm 28 leaves the guide contour 15 of the pawl 12 and the locking arm 28 springs back into its original position and engages behind the stop 14 the pawl 12.

Damit ein Hintergreifen des als Anschlagfläche ausgebildeten Anschlages 14 der Sperrklinke 12 mit der Anschlagkante 21 des Verriegelungsarmes 28 möglich ist, wenn die Begrenzungsfläche 26 des Gehäuses 1 an dem Tiefenanschlag 18 anliegt, entspricht vorteilhafterweise der Abstand A1 zwischen einer der Sperrklinke 12 zugewandten Anschlagfläche 27 des Tiefenanschlages 18 und einer Anschlagkante 21 des Verriegelungsarmes 28 wenigstens dem Abstand A2 zwischen einer dem Tiefenanschlag 18 zugewandten Begrenzungsfläche 26 des Gehäuses 1 und dem Anschlag 14 der Sperrklinke 12.In order for the stop 14 of the pawl 12, designed as a stop surface, to reach behind the stop edge 21 of the locking arm 28 when the boundary surface 26 of the housing 1 abuts the depth stop 18, the distance A1 advantageously corresponds to a stop surface 27 of the depth stop facing the pawl 12 18 and a stop edge 21 of the locking arm 28 at least the distance A2 between a limiting surface 26 of the housing 1 facing the depth stop 18 and the stop 14 of the pawl 12.

Ein Aufklappen des Gehäuses 1 gegenüber dem Schlitten 3 bzw. ein Abheben des Gehäuses 1 von dem Tiefenanschlag 18 ist somit nicht möglich, obwohl die zwischen dem Gehäuse 1 und dem Schlitten 3 angeordnete Feder 7 unter Vorspannung steht. Nach dem Loslassen des Verriegelungsschalters 11 dreht sich die Sperrklinke 12 in ihre Ausganglage zurück, so dass die Verriegelung zwischen dem Anschlag 14 der Sperrklinke 12 und der Anschlagkante 21 des Verriegelungsarmes 28 aufgehoben wird. Das Gerät kann seine Ausgangsstellung wieder einnehmen, indem das Gehäuse 1 und der Schlitten 3 auseinanderklappen.It is therefore not possible to open the housing 1 relative to the slide 3 or to lift the housing 1 off the depth stop 18, although the spring 7 arranged between the housing 1 and the slide 3 is under prestress. After releasing the locking switch 11, the pawl 12 rotates back into its starting position, so that the locking between the stop 14 of the pawl 12 and the stop edge 21 of the locking arm 28 is released. The device can return to its starting position by unfolding the housing 1 and the slide 3.

Claims (5)

Mauerschlitzgerät mit einem zwei Handgriffe (9, 10) aufweisenden Gehäuse (1), das eine Antriebseinheit (2) für ein aus wenigstens einer Scheibe (5) bestehendes Schlitzwerkzeug (4) enthält und gegenüber einem Schlitten (3) um ein in seinem ersten Endbereich angeordnetes Drehlager (6) gegen die Kraft einer Feder (7) parallel zur Scheibenebene des Schlitzwerkzeuges (4) verschwenkbar ist, wobei der Schlitten (3) in seinem zweiten Endbereich eine in Richtung Gehäuse (1) abragende, der Aufnahme eines verstellbaren Tiefenanschlages (18) dienende Verriegelungsschiene (17) und das Gehäuse (1) eine mit der Verriegelungsschiene (17) zusammenwirkende Sperrklinke (12) aufweist, die von einem an einem der Handgriffe (9, 10) angeordneten Verriegelungsschalter (11) betätigbar ist, dadurch gekennzeichnet, das der Tiefenanschlag (18) an der Sperrklinke (12) festlegbar ist.Wall slot device with a housing (1) having two handles (9, 10), which contains a drive unit (2) for a slot tool (4) consisting of at least one disk (5) and opposite one slide (3) in its first end region arranged pivot bearing (6) can be pivoted against the force of a spring (7) parallel to the disk plane of the slitting tool (4), the slide (3) in its second end region projecting in the direction of the housing (1) to accommodate an adjustable depth stop (18 ) serving locking rail (17) and the housing (1) has a locking pawl (12) which interacts with the locking rail (17) and can be actuated by a locking switch (11) arranged on one of the handles (9, 10), characterized in that the depth stop (18) on the pawl (12) can be fixed. Gerät nach Anspruch 1, dadurch gekennzeichnet, dass der Tiefenanschlag (18) einen in Richtung Sperrklinke (12) abragenden, mit einem Anschlag (14) der Sperrklinke (12) zusammenwirkenden Verriegelungsarm (28) aufweist.Device according to Claim 1, characterized in that the depth stop (18) has a locking arm (28) which projects in the direction of the pawl (12) and which interacts with a stop (14) of the pawl (12). Gerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Sperrklinke (12) eine Führungskontur (15) aufweist, die ein elastisches Ausweichen des Verriegelungsarmes (28) bewirkt.Apparatus according to claim 1 or 2, characterized in that the pawl (12) has a guide contour (15) which causes the locking arm (28) to deflect elastically. Gerät nach Anspruche 2 oder 3, dadurch gekennzeichnet, dass der Abstand (A1) zwischen einer der Sperrklinke (12) zugewandten Anschlagfläche (27) des Tiefenanschlages (18) und einer Anschlagkante (21) des Verriegelungsarmes (28) wenigstens dem Abstand (A2) zwischen einer dem Tiefenanschlag (18) zugewandten Begrenzungsfläche (26) des Gehäuses (1) und dem Anschlag (14) der Sperrklinke (12) entspricht.Device according to claim 2 or 3, characterized in that the distance (A1) between a stop surface (27) of the depth stop (18) facing the pawl (12) and a stop edge (21) of the locking arm (28) is at least the distance (A2) between a limiting surface (26) of the housing (1) facing the depth stop (18) and the stop (14) of the pawl (12). Gerät nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Verriegelungsarm (28) aus Federstahl gebildet ist.Device according to one of claims 2 to 4, characterized in that the locking arm (28) is formed from spring steel.
EP96810078A 1995-03-30 1996-02-07 Wall grooving device Expired - Lifetime EP0734822B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511725A DE19511725A1 (en) 1995-03-30 1995-03-30 Wall slot device
DE19511725 1995-03-30

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EP0734822A2 true EP0734822A2 (en) 1996-10-02
EP0734822A3 EP0734822A3 (en) 1998-02-18
EP0734822B1 EP0734822B1 (en) 2002-10-23

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EP96810078A Expired - Lifetime EP0734822B1 (en) 1995-03-30 1996-02-07 Wall grooving device

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US (1) US5676126A (en)
EP (1) EP0734822B1 (en)
JP (1) JP3662334B2 (en)
KR (1) KR100387020B1 (en)
AT (1) ATE226497T1 (en)
DE (2) DE19511725A1 (en)
ES (1) ES2185754T3 (en)

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EP1777047A1 (en) * 2005-10-21 2007-04-25 HILTI Aktiengesellschaft Protective cover
US20170225358A1 (en) * 2011-01-18 2017-08-10 Husqvarna Ab Cutting and dust or slurry collecting assembly and working machine
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Also Published As

Publication number Publication date
EP0734822A3 (en) 1998-02-18
JP3662334B2 (en) 2005-06-22
ATE226497T1 (en) 2002-11-15
DE19511725A1 (en) 1996-10-02
KR100387020B1 (en) 2003-10-04
KR960033675A (en) 1996-10-22
US5676126A (en) 1997-10-14
ES2185754T3 (en) 2003-05-01
EP0734822B1 (en) 2002-10-23
DE59609805D1 (en) 2002-11-28
JPH08281640A (en) 1996-10-29

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