EP3067175A1 - Sawing assistance device for a chain saw - Google Patents

Abstract

The invention relates to a saw auxiliary device for a chain saw (52), comprising a base element (10) with a holding device (18) to which the chain saw (52) can be fixed in a detachable manner. In order to enable improved handling and guidance of the chain saw supported on the base element (10), a base frame (80) is provided with guide means (82) to which the base element (10) can be suspended and along which the hinged base element (10) can be guided is.

Description

The invention relates to a Sägehilfsvorrichtung for a chainsaw according to the preamble of claim 1.

Such a Sägehilfsvorrichtung is already out of the DE 20 2014 105 200 U1 and comprises a basic element with a holding device to which the chainsaw can be fixed quickly and detachably. The base element serves as a support and guide element, by means of which the chain saw is to be moved along the surface of the object to be cut.

By the known Sägehilfsvorrichtung is thereby achieved that, for example, in dressing work in carpentry and carpentry a very good dimensional accuracy and angular accuracy is achieved with appropriate cuts with the chainsaw example of rafters, squared timbers and boards. The known Sägehilfsvorrichtung allows a local independence in the processing of the object to be cut, since this can be used anywhere in a gasoline-powered chainsaw with internal combustion engine.

However, there are other applications, for example, when trimming insulation materials, in which in addition to the universal use of the content of the base chain saw improved handling and leadership is desirable.

Object of the present invention is therefore to provide a Sägehilfsvorrichtung of the aforementioned type which allows improved handling and management of the content of the base element Chainsaw.

This object is achieved by a Sägehilfsvorrichtung with the features of claim 1. Advantageous embodiments with expedient developments of the invention are specified in the remaining claims.

In order to provide a saw auxiliary device of the type mentioned above, which allows improved handling and management of the content of the base chain saw, a base frame is provided with a guide device according to the invention, to which the base element can be suspended and along which the hinged base element is feasible. About the base frame thus supported on the base element chainsaw is supported or added to the weight of the base member and the chainsaw, so that the chainsaw when trimming a corresponding object particularly easy to handle and run, for example, only the force to move the chainsaw through the Operator must be applied. In addition, the guide along the base frame allows a very precisely adjustable and exact cut of the chainsaw with high dimensional accuracy and angular accuracy.

The sawing auxiliary device described is ideal for trimming insulating and insulating materials, such as insulation boards or the like. Of course, the Sägehilfsvorrichtung is also suitable for trimming wood, especially rafters, squared timbers or boards. In this case, the base element is not guided along the corresponding surface of the object to be cut, but rather along the guide means of the frame, so that the present invention desired ease of use can be achieved particularly well.

At the basic element, which already in the DE 20 2014 105 200 U1 is described, the contents of which should be expressly included here, can be by means of the mounting device in a simple manner, a commercial chainsaw, and in particular a gasoline-powered chainsaw with internal combustion engine, with set quickly and easily with a few simple steps. The chainsaw can thus be very easily and quickly connected to the saw assist device, thus allowing angular and dimensionally accurate trimming of respective objects such as insulation materials, woods or the like. The Sägehilfsvorrichtung thus allows the carpenter or joiner a cost-effective application, in which he can supplement his usually already existing chainsaw in a simple way to a cost-effective device, whereby he wins a variety of universal applications.

In a further embodiment of the invention, it has been found to be advantageous to provide a base support on which the at least one object to be sawed can be positioned and on which the base frame is supported. The base support is preferably positioned at a height that allows optimal and easy operation of the chainsaw.

It is also advantageous if the guide device is vertically displaceable along respective supports of the base frame. In this way, an optimum height position of the guide device can be adjusted relative to the object to be sawn.

In this context, it has also proven to be advantageous if in each case at least one of the opposing supports has a toothing, which is in engagement with a respective associated toothed wheel of a height adjustment device of the guide device. This results in a particularly simple and comfortable adjustment, and in particular when, in a further embodiment of the invention, the respective gears are connected to each other via a shaft which, for example manually by means of a crank or electrically or the like by means of a drive can be actuated.

A further advantageous embodiment of the invention provides that the guide device is releasably fixable by means of a fixing element relative to the associated support. In this way, a particularly high quality of the section of the respective object can be achieved.

A further advantageous embodiment provides that respective guide elements are provided on the base element, by means of which the base element can be suspended in respective corresponding guide elements of the guide device and slidable along this. By the cooperating guide elements on the side of the base member and on the side of the guide means an extremely simple guidance of the chainsaw can be created.

Finally, it has proven to be advantageous if the base support or the base frame is arranged on a collecting container for sawdust, sawdust or the like. The collecting container is preferably dimensioned in height so that the base support or the base frame are arranged at a height that allows easy positioning of the respective object to be sawn or a simple us comfortable handling of the chainsaw.

Fig. 1

eine Perspektivansicht auf eine erfindungsgemäße Sägehilfsvorrichtung für eine Kettensäge, mit einem Grundelement, an welcher die Kettensäge schnell-lösbar festgelegt ist, mit einem Grundgestell mit einer Führungseinrichtung, an welcher das Grundelement mit der Kettensäge einhängbar und entlang welcher das eingehängte Grundelement führbar ist, mit einem plattenartigen Grundträger, auf welchem das Grundgestell angeordnet ist, und mit einem Auffangbehältnis für Sägemehl, Sägespäne oder dergleichen, auf welchem der Grundträger ruht;

Fig. 2

eine Perspektivansicht auf das Grundelement der Sägehilfsvorrichtung mit einer Halterungsvorrichtung, an welcher die Kettensäge schnell-lösbar festlegbar ist;

Fig.3

eine perspektivische Rückansicht auf das an der Führungseinrichtung eingehängte Grundelement mit der daran festgelegten Kettensäge, wobei das Grundelement entlang der Führungseinrichtung verschiebbar ist;

Fig. 4

eine perspektivische Draufsicht auf das Grundelement mit der Kettensäge in der an der Führungseinrichtung des Grundgestells eingehängten Position;

Fig. 5

eine perspektivische Seitenansicht auf das Grundgestell mit der Führungseinrichtung, entlang welcher das eingehängte Grundelement mit der Kettensäge verlagerbar ist;

Fig. 6

eine perspektivische Seitenansicht auf zwei Stützen des Grundgestells, von welchen eine Stütze eine Verzahnung aufweist, welche mit einem zugeordneten Zahnrad einer Höhenverstelleinrichtung der Führungseinrichtung in Eingriff ist, wobei das Zahnrad mittels einer Kurbel betätigbar ist;

Fig. 7

eine Perspektivansicht auf eine weitere Stütze des Grundgestells auf der der Stütze mit Verzahnung gemäß Fig. 6 gegenüberliegenden Seite des Grundgestells, welche ebenfalls eine Verzahnung aufweist, welche mit einem zugehörigen Zahnrad der Höhenverstelleinrichtung der Führungseinrichtung in Eingriff ist, wobei die beiden Zahnräder auf beiden Seiten des Grundgestells über eine Welle miteinander verbunden sind, welche mittels der Kurbel betätigbar ist.

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings; these show in:

Fig. 1

a perspective view of an inventive saw auxiliary device for a chain saw, comprising a base member to which the chain saw is quickly detachably fixed, with a base frame with a guide device, on which the base element with the chain saw suspended and along which the hinged base element is feasible, with a plate-like base support on which the base frame is arranged, and with a collecting container for sawdust, sawdust or the like, on which rests the base support;

Fig. 2

a perspective view of the basic element of the Sägehilfsvorrichtung with a mounting device to which the chainsaw is quickly detachable fixable;

Figure 3

a rear perspective view of the hung on the guide means basic element with the chainsaw fixed thereto, wherein the base member along the guide means is slidable;

Fig. 4

a perspective top view of the base element with the chain saw in the hinged to the guide means of the base frame position;

Fig. 5

a side perspective view of the base frame with the guide means along which the hinged base element is displaceable with the chain saw;

Fig. 6

a side perspective view of two supports of the base frame, of which a support has a toothing, which is in engagement with an associated gear of a height adjustment of the guide means, wherein the gear is actuated by means of a crank;

Fig. 7

a perspective view of another support of the base frame on the support with teeth according to Fig. 6 opposite side of the base frame, which also has a toothing, which is in engagement with a corresponding gear of the height adjustment of the guide means, wherein the two gears are connected to each other on both sides of the base frame via a shaft which is actuated by means of the crank.

In Fig. 1 is shown in a perspective view of the overall structure of the Sägehilfsvorrichtung for a chain saw 52. The Sägehilfsvorrichtung includes as essential ingredients in particular in connection with Fig. 2 Ninth element explained in more detail, one in connection with the Fig. 3 to 5 Guide device 82 explained in more detail along which the base element 10 can be displaced with the chain saw 52, a base frame 80, by means of which the guide device 82 is supported so as to be vertically displaceable in a manner which will be described below plate-like base support 84, on which the base frame 80 is supported, and a collecting container 86, on which the base support 84 rests.

In Fig. 2 is shown in a perspective view, the base member 10 with omitted chainsaw 52, as this already in the DE 20 2014 105 200 U1 is described. The base element 10 comprises a flat metal plate, in the present case of an aluminum alloy, with a rectangular basic shape and with a central, likewise substantially rectangular recess 12. On one of the two longitudinal sides 14 of the recess 12 extends - substantially transversely to the base element 10 - a holding plate 16 of a holding device 18, which is presently also formed as a metal plate made of an aluminum alloy. This holding plate 16 is pivotable near the base element 10 about a pivot axis S, which is formed by two bearing pieces 20 for receiving corresponding bearing pin 22. The pivot axis S of the holding plate 16 of the holding device 18 extends at least substantially parallel to the base member 10 and to the corresponding longitudinal side 14 of the recess 12. From the holding plate 16 is in the present case approximately at right angles to the support bar 24 from which a threaded bolt 26 is fixed. This threaded bolt 26 extends through a support plate 28 fastened to the base plate 10 in the region of an arcuate guide groove 30, which has the pivot axis S to the center. On the threaded bolt 26, a handle 32 is screwed with a thread 34, so that the holding plate 16 - by means of the support bar 24 - by means of cooperating components - the threaded bolt 26 and the handle 32 - on the support plate 28 can be fixed. An adapted to the guide groove 30 arcuate upper cheek 36 of the support plate 28 carries an angle scale 38, by means of which an angular position of the support plate 16 can be adjusted relative to the plane of the base member 10 and fixed by means of the handle 32. By pivoting about the pivot axis S thus the angle of the cut can be adjusted.

It can also be seen that in each case a strip-like guide element 40 is provided on both longitudinal sides of the plate-shaped base element 10, which - as in the present case - can be designed in several parts. By the guide member 40 is thereby over the entire length of a guide slot 42nd formed, which is tuned in contour and cross-section on a leg 46 of a guide rail 44 of the guide means 82 described in more detail below. Furthermore, a guide element 78 can be seen, which in the present case is designed as a strip and parallel or behind a trailing edge 70 (FIG. Fig. 4 ) of the sword 62 runs. This further guide element 78 is also referred to as a splitting wedge and serves to better guide the sword 62 within the object to be sawn.

In synopsis of Fig. 2 With Fig. 5 , which shows the saw auxiliary device in a perspective side view, it can also be seen that on a front narrow side of the base member 10, two handles 50 are provided, by means of which the saw auxiliary device or the chainsaw 52 can be manually pulled. In principle, a drive would also be conceivable here by means of which the basic element 10 or the chain saw 52 could be moved along the guide device 82.

Further recognizable are respective fastening elements 54 of the holding device 18, by means of which corresponding fastening elements 56 (FIG. Fig. 5 ) received on sides of the chainsaw 52 and thus the chainsaw 52 can be fixed to the support device 18. As chain saw-side fastening elements 56 serve in the present case respective bolts, by means of which a cover 58 (FIG. Fig. 3 ) of the chain 60 can be fixed to the chainsaw 52. Usually, namely, the cover 58, which is commonly referred to as a lid, determined by means of two screws, which cooperate with the bolts, from the outside. At the same time thereby the sword 62 of the chainsaw 52 is set. If the screws used in normal operation without Sägehilfsvorrichtung be solved and removed, then the cover 58, which is penetrated by the body side of the chain saw 52 arranged bolts, can be removed, together with the sword 62 and guided on this chain 60.

Fig. 5 In addition, it can be seen that the upper flank 64 of the blade 62 serves as the leading edge of the sawing aid with which the cut is made. Consequently, it is clear that in this case the chain 60 in the region of the upper edge 64 from the structure 66 of the chainsaw 52 runs away. This running direction of the chain 60 is indicated by an arrow 68 on the upper flank 64. Accordingly, the chain 60 runs in the region of a trailing edge 70 according to the arrow 72 to the structure 66 and the motor of the chain saw back. Since respective teeth on the leading edge 64 thus carry their cutting edge on the underside, this means that sawdust or sawdust are transported in the downward direction.

Out Fig. 2 It can be seen that the fastening elements 54 on the side of the holding device 18 are associated with an adapter 74, which are arranged alternately the holding plate 16 recessed receptacle 76. In other words, the fastening elements 54 are presently arranged on the adapter 74, which in turn is held by means of corresponding fastening elements, for example screws, within the receptacle 76 of the retaining plate 16. By means of this adapter 74, it is possible to provide the fastening elements 54 at different distances or in different configurations, depending on the different chain saw model. This makes it possible in particular to fix different chainsaws from different manufacturers to the sawing aid, in which the respectively suitable adapter 74 is used. On the base member 10, a groove is also provided as a marking 48, which marks the course or the position of the effected by the chain 60 section at the top of the base member 10.

In addition, now the base frame 80 with the guide means 82 in particular on the basis of Fig. 3 to 7 be explained:

The base frame 80 in this case comprises the guide device 82, which is essentially formed by the two guide rails 44, which are end-worn by means of a respective frame arm 88. The two frame arms 88 are connected by means of two supports 90, 92 with a lower bracket leg 94. Each one support 90 - as in the 6 and 7 shown - on the respective end side of the guide rails 44 is provided with a toothing 96, in which engages a respective, non-recognizable gear. The two respective gears are connected via a shaft 98, which in the Fig. 3 and 4 can be seen and runs within one of the two guide rails 44. The Shaft 98 is also actuated by a crank 100. By actuating the crank 100 thus the two gears, which are in engagement with the corresponding serrations 96 on the corresponding supports 90, are moved. As a result, the entire guide device, so the two guide rails 44 and the two frame arms 88, according to height along the supports 90, 92 höhenverlagert. Thus, in the present case, the gears 98 connected to one another via the shaft 98, which can be actuated by the crank 100 and mesh with the respective toothing 96, form a height adjustment device 102 by means of which the guide device 82 can be displaced vertically along the associated supports 90, 92. For example, in the Fig. 1 and 5 recognizable fixing element 104, which is presently designed as a handle with a threaded bolt which braces the guide means 82 against one of the respective supports 90, 92, while the guide means 82 is fixed in the height set by the height adjustment device 102.

As within the scope of the invention includes to consider that instead of the manual solution chosen here for height adjustment and fixation and an automatic, such as electric, drive could be selected.

In particular from the Fig. 3 and 4 the concrete guidance of the base element 10 along the guide rails 44 of the guide device 82 can be seen. In particular, it can be seen that the respective inner legs 46 of the overall cross section approximately U-shaped guide rails 44 with the guide slots 42 of the respective guide elements 40 on the side of the base member 10 are engaged. The base member 10 can be suspended from above into the guide device 82 by the two guide slots 42 are suspended in the associated legs 46. Thus, in the present case, the base member 10 is held with the chain saw 52 substantially by its own weight on the guide means 82.

The console legs 94 of the base frame 80 are - as this particular Fig. 1 and the 4 and 5 is recognizable - supported on the plate-like base support 84. Within this plate-like base support 84, which is designed substantially rectangular in shape, is an equally rectangular recess 106th provided, which extends below the guide device 82. In this recess 106, on the one hand, the sword 62 of the chainsaw 52 can dip. On the other hand, the recess 106 releases a receiving space formed by the collecting container 86, in which sawdust, sawdust or the like can be collected.

The base support 84 is preferably removable from the containment receptacle 86 to deflate it. The height of the collecting container 86 is preferably dimensioned such that a simple and favorable positioning of the respective object on the base support 84 or a simple handling of the chain saw 52 results.

As an object to be cut, in the present case, an insulating board 108 in the Fig. 1 and 5 indicated. Fig. 5 shows that the guide device 82 is set so that the insulation board 108 fits exactly between the base support 84 and the undersides of the guide rails 44 of the guide device 82. This results in a particularly favorable positioning - and optionally fixing - the insulation board 108th

Out Fig. 5 Finally, it can be seen that a protective bar 110 of the chain saw 52 is still freely movable, so that by moving forward of the protective bar 110, a blocking of the movement of the chain 60 can be achieved.

Since the saw cut is accomplished with the upper or leading edge 64 of the sword 62 and consequently the chain 60 runs according to the arrow 68 on the leading edge 64 from the structure or motor 66 of the chainsaw 52 to the wood surface, can - depending on the material to be cut - a Retaining device may be required, which prevents the base member 10 and the chain saw 52 is lifted excessively in a wedging of the respective teeth 64 in the material or lifted from the guide device 82. This can be done, for example, by forming a rear grip between the respective guide elements 40 on the side of the saw auxiliary device and the guide rails 44. This can, for example, by a suitable design of the guide slot 42, for example, with a transverse extending web or the like, take place. If it then comes to a force occurring as a result of tilting the moving chain 60, which could cause a lifting of the base member 10 and thus the entire chain saw 52, this retainer, which is presently provided in the region of the guide means 48, ensures that it does not come to a lifting of the base element 10.

As a retaining device, it would also be conceivable to provide a corresponding transverse element on the further guide element 78, which in the present case runs behind or parallel to the trailing edge 70 of the blade 62. Consequently, for example, a further strip running transversely thereto, which forms the retaining element, could be arranged on the further guide element 78 in the form of the strip.

LIST OF REFERENCE NUMBERS

10

basic element

12

recess

14

long sides

16

Retaining plate

18

mounting device

20

bearing pieces

22

bearing bolt

24

supporting strip

26

threaded bolt

28

support plate

30

guide

32

handle

34

thread

36

upper beam

38

angle scale

40

guide element

42

guide slot

44

guide rail

46

leg

48

mark

50

handles

52

chainsaw

54

fasteners

56

fasteners

58

cover

60

Chain

62

sword

64

leading edge

66

construction

68

arrow

70

trailing edge

72

arrow

74

adapter

76

admission

78

guide element

80

base frame

82

guide means

84

base support

86

collecting container

88

frame arms

90

Support

92

Support

94

console leg

96

gearing

98

wave

100

crank

102

height adjustment device

104

fixing element

106

recess

108

Insulation Board

110

guard

S

swivel axis

Claims (8)

Sawing aid for a chain saw (52), having a base element (10) with a holding device (18) on which the chain saw (52) can be fixed in a detachable manner,
characterized in that
a base frame (80) with a guide device (82) is provided, on which the base element (10) can be suspended and along which the hinged base element (10) can be guided. Sawing aid according to claim 1,
characterized in that
a base support (84) is provided, on which the at least one object to be sawed (108) is positionable and on which the base frame (80) is supported. Sawing aid according to claim 1 or 2,
characterized in that
the guide device (82) is vertically displaceable along respective supports (90, 92) of the base frame (80). Sawing aid according to claim 3,
characterized in that
in each case at least one of the mutually opposite supports (90) has a toothing (96) which engages with a respective associated toothed wheel of a height adjustment device (102) of the guide device (82). Sawing aid according to claim 3 or 4,
characterized in that
the respective gears are interconnected via a shaft (98) operable by means of a crank (100) or a drive. Sawing aid according to one of claims 3 to 5,
characterized in that
the guide device (82) is releasably fixable relative to the associated support (90) by means of a fixing element (104). Sawing aid according to one of the preceding claims,
characterized in that
respective guide elements (40) are provided on the base element (10), by means of which the base element (10) can be suspended in respectively corresponding guide elements (44) of the guide device (82) and can be displaced along it. Sawing aid according to one of the preceding claims,
characterized in that
the base support (84) or the base frame (80) on a collecting container (86) for sawdust, sawdust and the like is arranged.

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