DE1882204U - HAND CIRCULAR SAW. - Google Patents

Description

□ R.-ING. PR.-ING. DIPL.-INGä. M.SC.

HÖGER - EUg! MAIER - LEGAL LAW

LkXI ^ STUTTQART NO. 383743

"Sl '7 STUTTGARTS, U H LAN D STR.16 postschbck ST3T. Sarcs

August 29, 1963

company C * i ¹ . Closer & öie « _? Stuttgart - fire brook

The invention relates to an optionally over collected by a protective hood circular saw _s over © articulated arm inen at a fixed point in aöhsparallelei? HioSitttog he ¥ "~ is pivotable and arranged on the wedge, a gap _s is the
via a lever linkage its position during the Terschwenken: -? "the circular saw changes so" that it is in the. essential ..sai ^. '. its cutting edge parallel to the circumference of the circular saw blade and its lower edge slightly above the lowest saw blade blade. ©. · .--- i% t.

A 32 937 h ■ -2

y - 105

August 29, 1963

In the tin prior Sechnik belonging circular saws of this type is that the riving knife directing its movement lever linkage formed by a feagEebel _s which is articulated the saw blade at the bearing neck of the axis and projecting at its the circumference of the Kreissägebalttes end carries the riving knife "

A control lever articulated on the one hand to the saw lever and on the other hand to a stationary rope, for example on the wall of the circular saw over the protective hood, causes the gextfüifeohtep - when the saw is swiveled, the riving knife moves in a "" 3 way that the Distance of the riving knife chord voia- the circumference of the circular saw blade in every phase of movement of the riving knife

borrowed is retained »'. .., - ··· - ■ - ■ '"'

Due to the above-mentioned arrangement of the cantilever levers of the known Koatriiktioaen on the bearing neck of the lattice axis ₉ , unfavorable bearing conditions for the cantilever lever are created, which result from the fact that the position of the iraghebellage- rs ■ only its, low material thickness " corresponds to this one! Bearing neck asx ^ e very large Iiarohmess ■ ser is eyeoMnet» The cantilever has thus "d: e no-t = · agile lateral Pühraag ₅ so that the riving knife even when it occurs, there is less of a lateral movement onto the riving knife. o ^ er forces from the plane dee

A 32 937 h

y - 105

29-3- August 1963

Because of the existing disproportion between the? The length of the guide lever and the diameter of the bearing neck cannot be avoided ₉ that you see the bearing of the ö? Ragh @ lever within a very short time where the surface of the bearing neck is attacked by great friction, forces *

These Haehteile are now in hand-held circular saws of the- @ li% ^a axigs> mentioned type according to the invention Teraiiedensi that- "the cantilever of the lever linkage at Sdhweiikarai a, nßermit1; fg ^; -atm» circular saw blade is arranged »the erfiadimgsgenäß-föM Mg neck © of the circular saw blade independent Eager'ia ^ g. Equipped- the-correct choice of the term- wiseHeü -: d? © r length of the 'saw lever bearing and the * ^ · ίΐΓ © 1ΐ! Ϋβ »8-6ΐ ^: Ε - Se ^ f "fendea Lageraohse", whereby the invented ter-laysiB ^; The arrangement of the lever pivot point is suitable in any case. Bearing eye allows the Sräghebel "- It can 'si ^©: li s © ~" with eiae reliable uad more stable arrangement' create the Spaitlretles Although results look transit the Storage- außermittige- of Xragheb'els relatif to the axis of Sreissägeblattes _ninth. that - when the circular saw is pivoted, a change in the distance between the riving knife and the circumference of the saw blade occurs - but this can be achieved by arranging the stationary control lever bearing point ₉ as well as des -.- question lever pivot point ^ clread Abs-tändsäsiderung are controlled in such a way ₉ that. '

A 32 937 h '. ~ 4

7 - 105 ■ ·., ■

August 29, 1963 '· "- ....., ..., * · .-." - "

in all cases in partial or το 11 au :. s gifted Su * -. stand the circular saw blade ■ oils Spaltkeilsohneide in Deia the rules corresponding region in Be ^ ng is the Uafang the circular saw blade, x ^ obei in full aviBge & GitfökaS ^ m state, the Scliiieiä © with appropriate curvature usag.e.iilir parallel SUB3 circumferential äes saw blade runs _o

Such a control of the riving knife leaves nothing to be desired. according to the invention errsicheaj when the stationary 'pivot point of the' control lever approximately in the I plane of the benchmark of the d-ie. Band circle saw-carrying Sehwenkarmes lies; and .if furthermore the point of the saw lever in the fully swung-out .Zixstaixd 'S! es circular saw blade approx. A diametrically opposite to the splitting wedge gate the end is.

The riving knife can see here in its Ge.br.auchsia ^ yet characterized stabilize _s that these are laterally guided .iä% Iind au this purpose, in which the saw unit überfaagändea ß-ehäiise fixedly disposed dee on the sides gap wedge-fitting guide elements, for example, Guide radii ^v ₉ arranged ».

A 32 937 II, J -105. /

29 August.fl963

In the drawing, © is in Au posed. Show it"

Invention =

. 1

Represent,

the circular saw

Saw unit in sol being oils protective hood

ei that

Pig. .2 ■■ -eiae

■ aggregate. indi © B

Fig. "9 · v _v .. a © partially begunTbroeiiese Draufäietoit";

In the case of the hand-held circular saw "^ aggregat ia & erhslb a protective hood 10 .. anoi protective housing" shown in the: .. drawing ' ^: .12- ~ the circular saw blade 14 bearing not shown on a' // © lie the circular saw blade Drive motor takes up ο-'The- saw-. aggregate JLsFt ₉ - "as from the two Pig» 1 and 2 h.ß ~ £ w or.ge.lit ₉ - arranged swiveling within - the hood and. For this "purpose, a cantilever arm marked 18 is attached _{to an?} ring-shaped side ' SM drive motor tew" that protrudes into the protective hood ©! I <~ dringtο Das-Kreissägeblatt.14 is in a well-known way with the help of tone 3ö.habennmis@!i#iTben 22 and 24 on the M ©, törwelle.

A 32 937 h '- 6

y - 105

August 29, 1963 ■

The support lever 18, with 'an' end piece 26 protruding beyond the circumference of the circular saw blade, is attached to a reinforced wall part 30 of the protective hood with the aid of a pivot axis 28
hinged bar _? and, disposed on the pivot axis 23 Hüekho! spring 32 tries ₉ "the saw unit RECOVERY as shown in I ¹ Ig ₀ 2 retracted St to keep β As Removing 4p drawing clearly 'seen ₉ is -the Sohutaliaube on a so-called
'' Footplate 34-, which together with the step of the saw blade one
suitable slot open _s in the plane ä W a ^ äer-iAtrhsbolzen 36 ■■ _; swiveling * U3id · in "not, .shown white .in the respective.; ':' Inclined position can be determined, so that with the hand-held circular saw · -. l · ■ also miter cuts can be made durelifülirea« In per se ”known f _:: ; _; :

I ■: i '.. V V'

Way is the circular saw blade 14 is designated by 38! ©! ⁰ column ß; § wedge arranged _{s of} this. -Tip 40 always a cracked%? load is above the lowest saw blade edge «. The cutting edge. JkZ ':'. \ This gap wedge is curved ₉ to be about 'the Vm £ ANGA <;. ■ _% shape of the blade corresponds " This splitting wedge is articulated on a pivoting lever 44 and arranged on a slide guide edge 46 of the same in a manner known from sigh; . '■ """. ·. ■■ '■ -.

The pivoting lever 44 is with its other Heb'eleMe "'iii * Besug on
Axis of the circular saw blade off-center on a pivot axis 48 so
articulated j that its pivot point in τοίΐ pivoted state
of the circular saw blade approximately diametrically opposite, on the splitting

■ A 32 937 Ii y- 105

August 29, 1963

chisel tip lies. (S. Mg. L) ". , The swivel lever. 44 is about Eintn at an attachment 50 articulated control lever 52 at. 54 ttit the reinforced wall part 30 of the protective hood - connected »

Due to the off-center with respect to the axis of the circular saw blade .-. R

■ ■ --- ■ ν -.-! Storage of the swivel lever 44 at 48 was it H) o possible _s füi? its ξ mounting on the relatively narrow pivot lever a bearing eye 56 and ■ '! so that a bearing guide of sufficient length is to be provided so that · \,

stable and safe storage that meets the requirements! tof the pivot lever 44 could be reached » To a distraction $ .e; s' :. 1 riving knife from the l $ h <än @ of the circular saw blade 14 _s .. are arranged opposite one another in the ß-ehäuse z-wsi guide rollers 37 or ρ 58 s which with their circumference touch the 'side surfaces of the riving knife and' watch when swiveling the saw unit roll on it. Due to the inventive arrangement of the pivot lever 44, the control lever 52 -, with © pivoting-in || of the sugar unit in the protective hood, the distance between the riving knife blade 42 is relatively larger than that of the circular saw blade, but due to the special arrangement of the pivot axis'48 in · - · "one that goes through the axis' of the circular saw blade ', in, iron.' . Winkelet νοϊτ about 50 ° sur foot plate 34 facing plane ensured, -.. That in any position of the extended Sügeaggre- · gates the required Sclineidenabstasid from the periphery of the circular saw \ _- sheet is given, the lower well of the riving knife tip 40 of the ' Saw blade edge. ■ · '·' .- '«. _Β

Claims (1)

Circular saw, where a swivel arm articulated to a fixed point can be freely swiveled in an axially parallel direction and on which a riving knife is arranged "which is operated via a lever" rod so changes its position during the pivoting of the circular saw that substantially with its inner · = "he edge parallel zwa circumference of the circular saw blade and -ist- slightly above DER lowermost blade edge with ssiner lower edge, characterized ₉ that a d ^ r lever of the Hetoelge stänges on the Sete / enkaru off-center smi ^ circular saw blade arranged •. j. net is. '' ο Handkreis / Haeh Anspruca 1, characterized in ₉ that the Schwenkana in the fully swiveled-out state of the circular saw blade t ¹ . approximately 'dieametral opposite to the splitting wedge front end is. 3. Circular saw according to /.as claim 1 or 2 _S thereby gekennseicknet _s _: that for the lateral guidance of the riving knife in the G-housing. "" Guide elements "", for example guide roller: * ^ are arranged in a stationary manner on the sides of the riving knife.