DE7023805U - Dust collecting device for drills, rotary hammers or the like - Google Patents

Description

Henry Neuchâtel, Essen

Dust catching device for drills, rotary hammers

or similar

The drilling of holes with the usual hand-operated barcr Drills or Schl-tg-drills as well as that Mortising slots or recesses using so-called hammer drills in plaster or stone is often undesirable unö annoying dust. Ss are Machines of the type mentioned are known which are provided with a dust extraction bladder or can be connected by a hose are. Dust extraction fans of this type make the machine more difficult to handle and make it difficult for the worker hindering addition, irrespective of whether the C - * \; Iä £ «on the tool is built on or carried on the back of the worker or with a connecting hose on the floor finds. Furthermore, bellows made of rubber or plastic are known which have a slip-on sleeve at one end own and with this on the drilling machines usually present, containing the drill chuck shaft bearing Bearing neck are attachable. Such bellows are subject in particular due to the material abrasion on the Inner surface of its rubber or plastic wall through in uen creases scrubbing and grinding rock dust rapid wear, so that their folds tear through prematurely and become leaky.

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Just as difficult as the avoidance of a disruptive development of dust is when drilling holes or chiseling slots and the like, the attachment and guidance of the Drill or chisel. When drilling holes in smooth and hard stone pins, the drill bit can run very easily, if a hole has not been made beforehand, and when chipping ozw. Sxemmen bind direction and ^: efe of a groove or groove freehand only difficult to pause.

The invention of course set itself the task of accruing Collect and remove dust using a device that is as simple and inexpensive as possible and light in weight, at the same time, it also makes it easier to apply and guide the tool target.

This task is done with a dust collector for Drills, hammer drills or the like, which surrounds the tool clamped in the machine in a sleeve-like manner and in The longitudinal direction is elastically resiliently compressible, according to the invention primarily achieved in that the Device a frustoconical coil spring made of helical has wound flat steel, the turns of which interlock tightly, and that the clock spring on one on the Lagerhala of the machine sealingly attachable ring body is attached with a lockable Dust drainage nozzle is provided. The application of a clock spring has the advantage that it is elastic in the longitudinal direction

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resiliently compressible part of the device made of wear-resistant, normal steel instead of a significantly less abrasion-resistant non-metallic material and has a high transverse stability, which will be discussed below. The ring body can fit the bearing neck of the machine and enclose the clock spring in the diameter as far as possible, with the drainage nozzle in front of the bearing neck is arranged on the ring body, but a preferred embodiment consists in the fact that the ring body supports the bearing shark. surrounds the machine at a radial distance and the discharge nozzle is arranged in the area of the storage shed. Through this is therefore outside the zone of moving tools and machine parts, i.e. behind the rotating one in the case of a drilling machine Chuck created a large dust saramel space, come to rest in the accumulating dust and get ansaiu "η can = The dust drainage nozzle can be used for smaller amounts of dust closed by a lid and the im Annular body accumulated and deposited dust, for example, poured out after drilling a hole from the device will. In the case of particularly large amounts of dust, a dust bag or, if necessary, can be attached to the dust drainage connection a hose can be connected.

There is an advantageous embodiment of the device in that at the last turn on the free, berjungten A guide shoe is arranged at the end of the coil spring, one of which has a passage opening for the tool provided, transversely to the longitudinal axis of the clock spring and a rear waiting at an angle having angled edge part. This clocking

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• chuh facilitates in connection and taking advantage of the Another advantage of the clock spring is that it has high transverse stability despite elastic flexibility in the longitudinal direction owns, the preparation and use of tools is very beneficial. When drilling holes, the middle part lies centering of the guide shoe and impermeable to dust outside of the borehole a on the work surface. When chiseling a groove or the like, the tool in one Angle to the work surface held and in the longitudinal direction of the continued to be chiselled groove, takes over in dieaem Edge part of the guide shoe that is angled backwards and rests on the work surface to the side of the Hille a favorable and satisfactory lateral guidance of the chisel tool in relation to the work surface. Here contributes the fact that the more the nickel spring is compressed are sol], the spring force to be overcome increases, contributing to the fact that a largely constant depth is easier the groove to be chiselled can be paused.

In the drawing is an embodiment of a dust collector shown according to the invention. the

The device has a cone-shaped clock spring 1, which bsstsht from helically wound flat steel and whose windings interlock dust-tight and that

Boring chuck 2 together with a clamped tool 3 of a drilling machine 4 sleeve-like with elastically resilient compressibility surrounds in the longitudinal direction. The clock spring 1 is attached to an annular body 5 which is placed on the storage sharks 6

the drill 4 can be plugged in a sealing manner and the storage sharks surrounds with radial Abetand so that bearing neck 6 and Annular body 5 delimit an annular cylindrical dust chamber. The ring body 5 has the bearing neck in the area dea 6 surrounding dust collection space 5 a dust drain ■ port 8, to which / dust bag 9 is connected. Is the collection volume of the jam maintenance room sufficient;> for the amounts of dust generated e.g. when drilling a hole alone The dust bag 9 was removed and replaced by a cover that closes the dust drainage connection 8 will. At the foremost turn of the clock spring a guide shoe 10 is arranged, which has a transverse to Longitudinal axis of the clock spring and a passage opening for the tool 3 having the middle part ■ and one angled backwards at an angle Edge part 12 has. With a machine that does not turn but only hitting with a shot is worked to the work surface guided chisel, the guide shoe 10 is supported with its angled edge part 12 on the work surface.

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Claims (3)

1. StaubauT "". <§ ■.-Rrichtung for drills, hammer drill or the like, the clamped into the machine tool sleeve fa · _ο »are ^ and resiliently Matching Caps longitudinally !. * is lekbar characterized in that it has a frustoconical coil spring '!) made of helically wound flat steel, the turns of which intermesh tightly, and that the coil spring is attached to a hinge that can be sealed onto the bearing neck (6) of the machine (4). ; is attached by (5), which is covered with a lockable dust *. support (8) is provided. 2. Dust collecting device according to claim 1, characterized in that d »ß the single body (5) the bearing neck (6) with radial Distance surrounds and in the area of the ringzylindriechen Staubbamiielraujnes (7) between the bearing neck and ßingkcx'per the dust drainage nozzle (8) is arranged. 3. Dust collecting device according to claim 1 or 2, characterized in that that a guide shoe (10) is arranged on the last turn at the free, tapered end of the clock spring (1) iet, the one with a passage opening for the tool (3) provided, transverse to the longitudinal axis of the clock spring extending middle part (11) and one at an angle to has backward angled R portion (12).