EP1950015A1 - Guide-chaîne pour scies à chaînes - Google Patents

Guide-chaîne pour scies à chaînes Download PDF

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Publication number
EP1950015A1
EP1950015A1 EP07101354A EP07101354A EP1950015A1 EP 1950015 A1 EP1950015 A1 EP 1950015A1 EP 07101354 A EP07101354 A EP 07101354A EP 07101354 A EP07101354 A EP 07101354A EP 1950015 A1 EP1950015 A1 EP 1950015A1
Authority
EP
European Patent Office
Prior art keywords
guide
guide bar
protrusions
recesses
guide plates
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Withdrawn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
EP07101354A
Other languages
German (de)
English (en)
Inventor
Li-Chua Chang
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP07101354A priority Critical patent/EP1950015A1/fr
Publication of EP1950015A1 publication Critical patent/EP1950015A1/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Withdrawn legal-status Critical Current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
    • B27B17/02—Chain saws equipped with guide bar
    • B27B17/025—Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material

Definitions

  • the present invention relates to a guide bar for a chain saw and the guide bar includes a plurality of protrusions and recesses on two guide plates so as to reinforce the structure of the guide bar.
  • a chain saw includes a motor and a guide bar which includes two guide plates and a spacer plate which is sandwiched between the two guide plates.
  • the guide bar usually is made by metal and a groove is defined along a periphery of the guide bar so as to receive the chain therein.
  • a conventional guide bar 60 of a chain saw is shown in Fig. 5 and generally includes two guide plates 62 and a spacer plate 61 which is sandwiched between the two guide plates 62.
  • the spacer plate 61 is shorter than the guide plates 62 so as to form a groove 63 which is defined along the guide bar 60.
  • the chain 70 is connected to the guide bar 60 and movable in the slot 63. When cutting objects, the chain 70 shakes and hits the guide plates 62 and the shocks are transferred to the whole chain saw. A huge noise generates due to the vibration of the chain 70 and the guide bar 60.
  • FIG. 6 Another conventional guide bar 80 is disclosed in Fig. 6 and includes two guide plates 82 and a spacer plate 81 which is sandwiched between the two guide plates 82.
  • the spacer plate 81 is shorter than the guide plates 82 so as to form a groove 83 which is defined along the guide bar 80 so as to receive the chain 90 therein.
  • the spacer plate 81 has a first through hole 811 and each of the two guide plates 82 has a second through hole 821 which communicates with the first through hole 811.
  • the vibration can be reduced when it is transferred to the first and second through holes 811, 821 so as to reduce the shaking.
  • the first and second through holes 811, 821 reduce the strength of the guide bar 80.
  • the object contacts the guide bar 80 and because the guide plates 82 have flat outer surfaces so that the friction between the object and the guide bar 80 increases and affects the cutting efficiency. Once the guide plates 82 are worn out, the whole guide bar has to be replaced.
  • the present invention intends to provide a guide bar for a chain saw and the guide plates of the guide bar includes multiple protrusions on outer side and recesses in inner side so as to reinforce structural strength of the guide bar and reduces the friction between the guide bar and the object to be cut.
  • the present invention relates to a guide bar for chain saws and the guide bar comprises a first guide plate having a plurality of first protrusions extending from an outer side thereof, a second guide plate having a plurality of second protrusions extending from an outer side thereof, and a spacer plate which is sandwiched between the first and second guide plates.
  • a groove is defined along an outer periphery of the spacer plate and located between the first and second guide plates.
  • the primary object of the present invention is to provide a guide bar of a chain saw wherein the two guide plates each have protrusions on out side thereof to provide better structural strength of the guide bar and less friction between the guide bar and the object to be cut.
  • the guide bar 1 of the present invention is connected to a chain saw 50 and a chain 40 is engaged with the guide bar 1.
  • the guide bar 1 of the present invention a first guide plate 10, a second guide plate 30 and a spacer plate 20.
  • the first guide plate 10 has a plurality of first protrusions 11 extending from an outer side thereof and a plurality of first recesses 111 are defined in an inner side thereof.
  • the first recesses 111 are located corresponding to the first protrusions 11.
  • the second guide plate 30 has a plurality of second protrusions 31 extending from an outer side thereof and a plurality of second recesses 311 are defined in an inner side thereof.
  • the second recesses 311 are located corresponding to the second protrusions 31.
  • the first and second protrusions 11,31 are located symmetrically relative to the spacer plate 20.
  • the spacer plate 20 is sandwiched between the first and second guide plates 10, 30.
  • a groove 21 is defined along an outer periphery of the spacer plate 20 and located between the first and second guide plates 10, 30 so as to receive the chain 40.
  • the first and second guide plates 10, 30 are connected with each other by welding, riveting or any known method.
  • the first protrusions 11 and the second protrusions 31 project from the outer surfaces of the first and second guide plates 10, 30 such that when the chain saw 50 is cutting a bulky object, only the first and second protrusions 11, 31 contact the object such that only limited friction is occurred between the guide bar 1 and the object.
  • the first protrusions 11 and recesses 111 and the second protrusions 31 and recesses 311 reinforce the structural strength of the first and second guide plates 10, 30.
  • the shocks or vibration can be shared by the protrusions 11, 31 and recesses 111, 311 by slightly deformation to reduce the shaking during using the chain saw 50.
  • the first and second protrusions 11,31 and the first and second protrusions 31 and recesses 311 can be arranged in any known pattern or shapes.
  • the first and second protrusions 11, 31 are curved protrusions.
  • the first and second protrusions 11, 31 can also be elongated ridges or different sizes and shapes.
EP07101354A 2007-01-29 2007-01-29 Guide-chaîne pour scies à chaînes Withdrawn EP1950015A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07101354A EP1950015A1 (fr) 2007-01-29 2007-01-29 Guide-chaîne pour scies à chaînes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07101354A EP1950015A1 (fr) 2007-01-29 2007-01-29 Guide-chaîne pour scies à chaînes

Publications (1)

Publication Number Publication Date
EP1950015A1 true EP1950015A1 (fr) 2008-07-30

Family

ID=38068681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07101354A Withdrawn EP1950015A1 (fr) 2007-01-29 2007-01-29 Guide-chaîne pour scies à chaînes

Country Status (1)

Country Link
EP (1) EP1950015A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017178295A1 (fr) * 2016-04-15 2017-10-19 Husqvarna Ab Barre de guidage légère pour scie à chaîne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5569401A (en) * 1978-11-18 1980-05-26 Tsutomu Sakanishi Guide bar for chain saw
FR2599292A1 (fr) 1986-06-02 1987-12-04 Bruccheri Gaetan Dispositif d'anti-blocage pour scies a chaine
US5216814A (en) * 1991-03-18 1993-06-08 National Research Council Of Canada Chain saw guide bar
JPH06297403A (ja) 1993-04-13 1994-10-25 Miyanaga:Kk チェンソー用案内板
US5564192A (en) * 1994-06-15 1996-10-15 Andreas Stihl Guide bar for a saw chain of a motor-driven chain saw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5569401A (en) * 1978-11-18 1980-05-26 Tsutomu Sakanishi Guide bar for chain saw
FR2599292A1 (fr) 1986-06-02 1987-12-04 Bruccheri Gaetan Dispositif d'anti-blocage pour scies a chaine
US5216814A (en) * 1991-03-18 1993-06-08 National Research Council Of Canada Chain saw guide bar
JPH06297403A (ja) 1993-04-13 1994-10-25 Miyanaga:Kk チェンソー用案内板
US5564192A (en) * 1994-06-15 1996-10-15 Andreas Stihl Guide bar for a saw chain of a motor-driven chain saw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017178295A1 (fr) * 2016-04-15 2017-10-19 Husqvarna Ab Barre de guidage légère pour scie à chaîne
US11230028B2 (en) 2016-04-15 2022-01-25 Husqvarna Ab Lightweight chainsaw guide bar

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