DE8405010U1 - Vertical drilling aid for hand drills or rotary hammers - Google Patents

Description

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BOBEBT BOSCH OMBB ₁ 7000 Stuttgart 1

Senkraht drilling aid for Edgehflhrm a & flhjlfteA oAax._BftflrJl &m> j (_ ") State of the art

The innovation is based on an auxiliary device according to the Genus dee main aneprnohs. With a known Vorrieatung of this type is the firmly arranged beeugskerper ale Huleenfirmige tube formed. On her dea tool At the opposite end, the support foot is pivoted » the one with a pipe penetrating and serving as a pointer Traffic jam is connected. Burned down on her tool The hole is open at the end. Your upper sand forms eom with the BesugskSrper for who reach near this sand * the * rod-shaped pointer. When using one with a eolGhen device-equipped drill is it VJ unavoidable that in the open, open, huleea-shaped So your foreign bodies come in, they see the inner ones Fix or even pinch the wall of the pipes and the rod. The concern of the stick serving as a pointer in fiShre is thus hindered or made impossible.

In another, known embodiment, the pivotable support foot also serves as a pointer Rod connected, the end of which protrudes into a Sing serving as a reference body. This carries on the edition ef ate a transparent cover plate on the opposite side, which has a crosshair as an orientation aid. Of the

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Beaue "lfi6iff # F for dta show"? fctitetot thus from an in Ri of tune au * Böhi put open ", * ofif $" moderate structures. It HftBOi niant ve * Hiifi4twt ν · ρ4βπ, diaä sielt ί, η die tem tofffÖPBieta öeftilde Wia Behreti eatetesettdee Bebrkleia fto- • ftstmelt and look on the inside of the Deakeeaeifee feeteetat, so the position of the etafcfönnigea pointer is correct the ervibatea thread crayons aieat more geeeaea be kaaa. Sia Aueriebenea of the Maeeaiae with the help of beeehriefeeaea Verrieatuag iet therefore only then again mdgliah, wean 2uve * dio Xnr.eneeite of the Oeesseaeibe is riaigt. Particularly in the Boarea ia the Deeke, the device is within In no time useless again.

Advantages of the innovation

You new improper arrangement with the knowledgeable Characteristics of the main row, on the other hand, offered the advantage that drill bran or other foreign bodies from the pointer » from deesen camp and from the inside of the disc be kept away, which ensures the mobility of the pointer and sees through the cover plate The pointer remains intact when drilling into the ceiling.

for the measures listed in the uterana tests are advantageous developments and improvements of the performance specified in the main claim, possible. Particularly It is advantageous that the tapered part of the housing and the bearing for the support foot and / or the pointer on the one hand ad the support foot, the blessing on the one The bearing and the pointer, on the other hand, are each formed in one piece from *. In this way a particularly costly Inexpensive manufacture of the device possible, what noeh is increased by the fact that the two components are injection-molded from plastic. A particularly inexpensive installation option

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* speed results in aieh, wea the stock for the edition & A and / or align the pointer with the counterpart on this bearing. Ball joint forms.

drawing

An example of the innovation is shown in the drawing shown and explained in more detail in the following description. Ss aeigen Figure 1 shows a hammer drill with an attached Auxiliary device in the Drai & faioht, Figure 2 iron Side view of the auxiliary device, partly in section, and FIG. 3 a plan view of the device aaah Figure S.

Description of the delivery example

The hammer drill 1 shown in Figure 1 has at its front find a tool holder 2 into which a drill 3 is inserted. The clamp-like clamping piece 5 of an additional handle 6 running perpendicular to the plane of the drawing is fastened around the cylindrical spindle bearing U of the hammer drill 1. A profile rod 3 is slidably mounted in a surface passage bore with a% profile-shaped cross-section, which is supported by the clamping screw? is clamped. The axis of the profile bar 8 », which in turn is fastened in a clamping piece 9, runs parallel to the axis of the tool (drill 3).

The hammer drill 1 carries a device 10 for monitoring the angular position of the drilling tool 3 in relation to the workpiece upper surface 23. The device to is ultimately connected to the hammer drill 1 via the clamping piece 5. It has a holding device 11 for attachment to a questioning device 12. This consists of two essentially tubular, telescopically telescopic support

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element en 13, 1 ¹ *. In the embodiment shown in the drawing, the front support element 13, to which the holding device 11 is attached, is the inner support element, which dips into the outer support element 1U.

The inner support element 13 has a polygonal cross section which has at least two edges and which in FIG eixier adapted guide bore of the outer support element 1U slides. Inside the outer support element 1U a compression spring (not shown in the drawing) is arranged, which acts on the inner support element 13 and endeavors to keep the support element 13 always in a maximally extended position relative to the support element 1U, its extension movement being arranged in the support element 1U, which is also not shown in the drawing Stop is limited.

The device 10 is essentially pot-shaped auegeblichen housing 15, which is integrally connected to the starting device 11. Housing 15 and holding device 11 are expediently injection-molded from plastic. At its end facing the tool are to the housing 15 several, arranged in a star shape around the axis i6, with their respective narrow sides on the axis 16 aligned Seats 17 integrally formed. The narrow sides facing the axis 16 18 of the lugs 17 are designed so that they can accommodate a ball 19 between them and thus this serve as a warehouse. The ball 19 belongs to a structural unit that consists of a support foot 20, the ball 19 and a pointer 21 and zveekmaftiβweise made of plastic eggstüskig is injected. The support foot 20 and pointer 21 are thus connected to the housing 15 in an articulated manner. Approaches 17 have such a measure of inherent elasticity that the ball 19 AAOh passing the 2eigears 21 luroh between the Sitting 17 fceettfctaA · BffttMf dweh itioBt »» Bnwk auf

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the support foot 20 are spread until the ball 19 in the bearing formed by the narrow sides 18 of the lugs 17 can snap into place. Approaches 1? then spring back into hers Starting position back in which they serve the ball 19 as a bearing.

The lugs 17 are surrounded by a sleeve 22 made of elastic material, such as. B. rubber. The drawn-in end 23 of the sleeve 22 encloses the shaft 2k of the ^ -. Support foot 20, so that the ball joint 17 »18, 19 is sealed against the ingress of foreign bodies, such as cuttings, for example.

In the edge region of the cup-shaped part of the housing 15 facing away from the bearing 18 for the support foot 20, a transparent disk 25 is inserted. The inner wall of the housing 15 is shaped at its upper edge in such a way that the disk 25, which is likewise correspondingly shaped on its circumference, can be forced into the housing 15. The interior of the housing 15 is thus sealed against the ingress of foreign bodies. The disk 25 has a number of concentric rings 26 which, in cooperation with the tip 27 of the pointer 21, cooperate in a manner still to be described. The rings 26 are expediently formed by the edges 32 of annular surfaces 33 that are stepped relative to one another.

When working with the hammer drill 1, the support foot 20 of the device 10 is first of all on the workpiece surface 28 put on (see Figure 1). The angular position that the drill 3 assumes to the workpiece surface 28 is through The position of the tip 27 of the pointer 21 in relation to the concentric complaints 26 reveals you Aohee dee Bohrerβ 3 then runs vertically but ffvrfcft & ofcoftwf love 28, if

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sieve the pointer tip 27 is in a concentric position to the rings 26. If this is not the case, the deviation of the pointer tip 27 from this position indicates in which direction and by which hatred the hammer drill 1 must be swiveled in order to achieve an angularly correct drilling. In the event that a predetermined angular deviation of the drilling direction from the vertical is desired, the concentric rings 26 on the disk 25 are designated with corresponding angular dimensions, as can be seen from FIG. After the desired angular O position of the drill 3 to the workpiece surface 28 has been reached by pivoting the hammer drill 1 accordingly, the hammer drill is moved in the direction of the workpiece, whereby the support element 13, which is telescopically guided in the support element 1 **, moves into the support element against spring force \ h is pushed in until the drill tip rests on the tool surface 28. The support element 13 carries a depth measuring scale 29. On the outer surface of the support element 13 there is arranged a depth stop ring 31 which is clamped by means of a clamping screw 30 and with which the desired drilling depth can be set in conjunction with the scale 29.

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Claims (1)

B. 19233 16.2.198U Hz / Yes ROBEBT BOSCH GHBH, TOOO Stuttgart 1 Expectations 1. Auxiliary device for hand drills or rotary hammers, which allows the angular position of the drilling tool to be monitored in relation to the workpiece surface, with a being located on the workpiece surface supporting, pivotable and displaceable support foot is connected to a pointer »whose tip forms a display device in cooperation with a fixed reference body, characterized in that that aas pivot bearing (17 »18) for the support foot (20) and / or the pointer (21), as well as the pointer (21) itself from a housing (OK, 22), the support foot (20) of which facing away Opening is closed by a transparent disk (25), at least largely enclosed in a dust-tight manner are* 2. Device according to claim 1, characterized in that that part of the housing (10, 22) consists of a pivot bearing (17 »18) for the support foot (20) and / or the pointer (21) surrounding, with its one, retracted end (23) the shaft (2U) of the support foot (20) or the pointer (21) enclosing sleeve (22) made of elastic material, for example rubber. 3 · Device according to one of claims 1 or 2, characterized characterized in that the pot-shaped part (1?) of the housing ($ 1, 22) and the bearing (17 »13) for the support foot (20) d * n pointer (2T) «iaitftekig» «· # · * ied. Il «Il II ·« <· I ·· I I "Γ S! MIIIi • I S I «··· Il« II · « f - 2 - R. 19233 ^: U. Device according to one of claims 1 to 3, characterized «Marked that the support foot (20), the counterpart ! (19) to the bearing (17, 18) and the pointer (21) in one piece are trained. 5- device according to claims 3 and U, characterized in that that the bearing (IT, 18) for the support foot (20) and / or the pointer (21) together with the counterstack (19) on this bearing (17 »1 &) forms a ball joint. 6th Device according to one of Claims 1 to 5, characterized in that the parts (11, 1 ?, 17 and 19, 20, 21) are injection-molded plastic parts. 7. Device according to one of claims 1 to 6, characterized in that that the washer (25) is in the bearing (17 » 18) for the support foot (20) and / or pointer (21) facing away from the edge area of the pot-shaped part (15) of the housing (15, 22) is broken in. 8. Device according to one of claims 1 to 7, characterized in that the Seheibe (25) has concentric rings (26) which in cooperation with the tip (2?) ' Of the pointer (21) serve as an orientation aid. ^J ' 9. Apparatus according to claim 8, characterized in that that the rings (26) through the edges (32) of each other stepped ring surfaces (33) are formed. 10. Apparatus according to claim 8 or 9 «characterized in that the rings (26) at such a distance • are arranged to the center of the disc (25), daft ax f in cooperation with the 4-point tip (27) of the pointer (2t) the degree of "Winfcelabweobung von der S" n & ** oliten. • t t ·· fete ·· · ·· I «· · I · Il - 3 - R. 19833 11. Ver? I <* lrta & g o * otk eiaen der Anaprüabe 1 t> £ »19« geäcBneeiobnet, d * J der "offff & Pfflige Tail (15) dta 0§ & l" uj6s (19t ftfi) ftit ti »·» RAitteiiwielitttne (11) ν · ίΐ »ο4ββ leu. IS. Vepriofcta & t a * oh Aat ^ pueft 11, daduvoli d "£ Aw fteftfaral" t T "il (19) d ·· eehftu * ·· (U, 22) uad dl · lÄlt # tiiwieÄttt, fte (H) einetftokig 13. Tovviohtu & g n * eb eiatm d * r Aaspirftehe 1 tie 11, daduvob g «] MfiWioiohft« t _t Aa> 0 tie with BiIf «der Salteeinffiahtung (11)» 4 * * ift * r TraetioffiöÄ-euftg (ia) löetoM ¹ Terbuaden i »t, di · mm *« ·! la (13 »U) is formed, el & ee, TorssugeirelBe dae iuftere, on the or the BoHrÄanmer (1).