EP0894584A1 - Barre de guidage pour la chaíne coupante d'une scie à chaíne - Google Patents

Barre de guidage pour la chaíne coupante d'une scie à chaíne Download PDF

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Publication number
EP0894584A1
EP0894584A1 EP98111780A EP98111780A EP0894584A1 EP 0894584 A1 EP0894584 A1 EP 0894584A1 EP 98111780 A EP98111780 A EP 98111780A EP 98111780 A EP98111780 A EP 98111780A EP 0894584 A1 EP0894584 A1 EP 0894584A1
Authority
EP
European Patent Office
Prior art keywords
groove
guide rail
guide
packing
groove base
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.)
Withdrawn
Application number
EP98111780A
Other languages
German (de)
English (en)
Inventor
Dieter Sellmann
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.)
Makita Engineering Germany GmbH
Original Assignee
Dolmar GmbH
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 Dolmar GmbH filed Critical Dolmar GmbH
Publication of EP0894584A1 publication Critical patent/EP0894584A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/12—Lubricating devices specially designed for chain saws

Definitions

  • the invention relates to a guide rail for the saw chain of a motor chain saw according to the preamble of claim 1.
  • a guide rail for the saw chain is one Chain saw with a convex filler integrated into the guide groove known, which partially covers the lubrication hole by the distance to reduce between the bottom of the groove and the clearing members, and thus one if possible complete capture of the lubricant by the foot parts of the To ensure clearing elements.
  • the lubricant gently rubs onto the groove base on both sides, especially on the side facing the drive. This goes to lost a lubricant on the bottom of the groove because the clearing members with does not come into contact with it and flows along the other Guide rail and emerges at undesirable places.
  • DE-35 28 433 C2 shows instead of that described in US 3,581,783 Packing a trapezoidal packing whose one surface is parallel runs to the bottom of the groove. Even if this is the route for contact between clearing elements and lubricants, a drainage of the Lubricant not prevented over the edges of the packing on the groove base are, so that similar problems as in US 3,581,783 occur.
  • DE-37 29 424 C2 describes a packing with a largely surface aligned parallel to the groove base, but in contrast to the Teaching according to DE 35 28 433 C2 on the one hand in the field of Lubrication hole is so deep that it is no longer covered, and to other in the surface is significantly enlarged to the longest possible Contact area between clearing elements and lubricant on the packing to reach. Due to the deepening there is a relatively larger one Amount of lubricant available because the clearing elements contain the lubricant take out of the recess. However, in this case, too considerable part of the lubricant distributed on the packing from Packing body and thus gets to the bottom of the groove, what the described follow.
  • the invention has for its object a guide rail for To develop a chain saw for a chain saw that allows draining of lubricant from the lubrication holes along the guide groove prevent the clearing members from being adequately wetted with lubricant and wear at the interface between packing and Keep clearing elements as low as possible.
  • the guide groove is in the groove base a packing, hereinafter called backstop, used the one Prevents the lubricant from flowing out.
  • This backstop lies preferably on the drive side of the lubrication hole and thus in the running direction the chain in front of the lubrication hole. It is advantageously dimensioned such that its greatest increase in the groove base the distance of a lower hook corresponds to a clearing element from the bottom of the groove.
  • Lubricant emerging from the lubrication hole flows up to the drive end back to the backstop, so that between backstop and Lubrication hole forms a reservoir of lubricant.
  • the continuous ones Clearing members are immersed there and come into sufficient contact with them large amounts of lubricant. Because the top point of the backstop otherwise the only part of the lock that is in contact with the clearers There is little wear and tear on contact.
  • the lubrication hole is in a recess of the bottom of the groove.
  • the depression is preferred of the groove base executed so that the drive-side boundary wall of the The depression drops approximately at right angles to the groove base, in the direction of the Chain rises flat and takes up the entire width of the groove base.
  • the backstop can be attached to the bottom of the groove or in one Deepening of the groove base to be anchored.
  • a rectangular backstop used.
  • the backstop can be made of plastic or a non-ferrous metal be. This allows at the narrow contact point between the clearing member and Backstop that minimizes wear from the outset, none at all Damage to the clearing elements may occur. Besides, these are materials inexpensive and easy to replace, so that the invention Backstop, especially in the preferred, simple one Embodiment, classified as a wearing part and easily replaced can be.
  • the constructional manufacturing tolerances of the guide groove can completely by inserting the backstop be balanced.
  • the distance between Backstop and the clearing element in relation to the inlet angle which i.a. is determined by the size of the sprocket, the Functionality further optimized.
  • Fig. 1 shows a schematic representation of a motor chain saw 1 with Guide rail 2, which is releasably attached to the saw body. On the edge of the Guide rail 2 runs a saw chain 3 in the direction P. On the A lubrication hole 9 can be seen in the guide rail.
  • the saw chain 3 has in the middle in the usual way
  • Side members 5 and 6 are clearing members 4, which have a foot part 4a have, which engages in a guide groove 8 of the rail 2.
  • Side links recognizable as the cutting links 5 or Links 6 formed and with the clearing members 4 by rivets 7 are articulated.
  • the guide groove 8 is from the groove base 8a and limited to the two groove walls 8b, the end face 8c each one Forms a support surface for the surrounding side links.
  • the foot parts 4a of the Clearing members 4 do not extend down to the groove base 8a. It can significant fluctuations in the groove depth occur due to Manufacturing tolerances are conditional.
  • the guide rail 2 has near its rear end at least one lubrication bore 9 lying perpendicular to the rail plane, which is in the region of the guide groove 8 close to the groove base 8a and one of the Push through the groove walls 8b.
  • the groove base 8a is in the area of Lubrication hole lowered so that the lubrication hole in a recess of the groove bottom 8d enters.
  • the depression of the groove bottom 8d is so held that the drive-side boundary wall of the recess 8d drops approximately at right angles to the groove base 8a and in the running direction of the Chain (P) rises flat.
  • a packing 10 is inserted into the bottom of the groove. This is cuboid and opposed at an angle of 45 ° the direction of movement is pushed into the groove base and fixed there.
  • This Packing can be made of plastic or non-ferrous metal, so that Räumglieder 4 on the small contact area are not damaged, and is adjust the height to the distance of the chain links from the groove base.
  • Lubricant entering through the lubrication hole fills the recess in the Groove bottom 8b and rises on the packing to the top of the barrier. Consequently the lubricant is prevented from running out and other sufficient lubricant in a reservoir (11) in which the foot parts 4a of the clearing members 4 engage. An expiration the oil in the direction of the drive part is thus prevented.
  • the packing 10 is classified as a wearing part and can easily be removed from the guide groove 8 be removed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP98111780A 1997-06-30 1998-06-26 Barre de guidage pour la chaíne coupante d'une scie à chaíne Withdrawn EP0894584A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19727782 1997-06-30
DE1997127782 DE19727782C2 (de) 1997-06-30 1997-06-30 Führungsschiene für die Sägekette einer Motorsäge

Publications (1)

Publication Number Publication Date
EP0894584A1 true EP0894584A1 (fr) 1999-02-03

Family

ID=7834107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111780A Withdrawn EP0894584A1 (fr) 1997-06-30 1998-06-26 Barre de guidage pour la chaíne coupante d'une scie à chaíne

Country Status (2)

Country Link
EP (1) EP0894584A1 (fr)
DE (1) DE19727782C2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581783A (en) * 1968-04-30 1971-06-01 Sandvikens Jernverks Ab Lubricating means for chain saw bar
CA1045519A (fr) * 1976-12-10 1979-01-02 Robin A. Plumbley Lame-guide a huileur de scie-chaine
DE3528433A1 (de) * 1985-08-08 1987-02-19 Stihl Maschf Andreas Fuehrungsschiene fuer eine saegekette einer motorkettensaege
EP0333354A1 (fr) * 1988-03-18 1989-09-20 Blount, Inc. Guide-chaîne laminé pour une scie à chaîne
DE19547353A1 (de) * 1995-02-28 1996-08-29 Stihl Maschf Andreas Führungsschiene mit einem Ölzufuhrkanal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873133C (de) * 1940-01-19 1953-04-13 Andreas Stihl Schmiereinrichtung fuer Kettensaegen
US2765823A (en) * 1953-02-12 1956-10-09 George M Kneifl Chain saw blade with oiling means
DE3729424A1 (de) * 1987-09-03 1989-03-16 Stihl Maschf Andreas Fuehrungsschiene fuer die saegekette einer motorkettensaege und verfahren und vorrichtung zu ihrer herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581783A (en) * 1968-04-30 1971-06-01 Sandvikens Jernverks Ab Lubricating means for chain saw bar
CA1045519A (fr) * 1976-12-10 1979-01-02 Robin A. Plumbley Lame-guide a huileur de scie-chaine
DE3528433A1 (de) * 1985-08-08 1987-02-19 Stihl Maschf Andreas Fuehrungsschiene fuer eine saegekette einer motorkettensaege
EP0333354A1 (fr) * 1988-03-18 1989-09-20 Blount, Inc. Guide-chaîne laminé pour une scie à chaîne
DE19547353A1 (de) * 1995-02-28 1996-08-29 Stihl Maschf Andreas Führungsschiene mit einem Ölzufuhrkanal

Also Published As

Publication number Publication date
DE19727782A1 (de) 1999-01-28
DE19727782C2 (de) 1999-10-14

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