WO2002070182A1 - Mecanisme de blocage de lame de scie - Google Patents

Mecanisme de blocage de lame de scie Download PDF

Info

Publication number
WO2002070182A1
WO2002070182A1 PCT/BG2001/000004 BG0100004W WO02070182A1 WO 2002070182 A1 WO2002070182 A1 WO 2002070182A1 BG 0100004 W BG0100004 W BG 0100004W WO 02070182 A1 WO02070182 A1 WO 02070182A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
bush
locking mechanism
housing
flat spring
Prior art date
Application number
PCT/BG2001/000004
Other languages
English (en)
Inventor
Nikolay Ivanov Ganchev
Original Assignee
Sparky Eltos
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 Sparky Eltos filed Critical Sparky Eltos
Priority to DE10196185T priority Critical patent/DE10196185B4/de
Priority to PCT/BG2001/000004 priority patent/WO2002070182A1/fr
Publication of WO2002070182A1 publication Critical patent/WO2002070182A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
    • B23D51/10—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for hand-held or hand-operated devices

Definitions

  • the preferred embodiment relates to a circular saw blade locking mechanism for power tools used in machine engineering, woodworking and as household tools.
  • a locking mechanism for circular saw blades whose construction is described in DE 195 32 494 A 1, is known.
  • the construction comprises a hollow casing with a shaped bush, which is fixedly attached to it. Above the bush in the hollow casing there is a pressing rest at whose upper distal end there is a cavity. A spring in the cavity is fixed with its end abutting the upper closed end of the hollow casing.
  • a circular saw groove is cut longitudinally and diametrically in the bush. At the lower end of said bush two partial grooves are cut with their planes perpendicular to blade groove. Their aggregate width is larger than that of the blade at its lug section. At the lower end of said bush, there are two pairs of opposite slots having fixing balls in them.
  • Each of said balls is in contact with the corresponding blade lug.
  • a fixing element which is movable axially along said bush.
  • a spherical groove is provided with a conical plane at its upper end. The diameter of said spherical groove is the same as that of said fixing balls.
  • a spring is mounted on the outer side of said fixing element. Said spring is constantly compressed by means of a limiting washer located in a slot in said shaped bush.
  • a locking mechanism for circular saw blades which comprises a housing with an element fixedly attached to said housing.
  • a groove is made lengthwise along the diameter of said element.
  • a locking bush which is movable axially.
  • Said bush is fixed in bottom end position by means of a shoulder and spiral spring. At its upper end, said bush abuts a stop washer.
  • the bottom end of the longitudinal groove is provided with a stop opening. In it is located the retention tooth of the saw blade.
  • the upper end of said groove has a uniform longitudinal section whereas at its opposite end the section is larger.
  • a flat spring is configured to fit in said lengthwise groove.
  • the upper end of the flat spring is shaped into a fixing tooth, which has been bent towards the outer edge of the housing element.
  • the width of the longitudinal groove together with the flat spring located in it is larger than the thickness of the saw blade in said longitudinal groove.
  • One advantage of the locking mechanism for saw blades is its simple construction and reliability during operation.
  • the use of a flat spring ensures dependable lateral movement restraint of the blade.
  • Fig. 1 is a lengthwise section of the locking mechanism for saw blades in a plane perpendicular to the plane of the blade.
  • Fig. 2 is a lengthwise section in a plane parallel to the plane of the saw blade.
  • the locking mechanism for saw blades includes a housing 1 with an element 2 fixedly attached to said housing.
  • a groove 3 is made lengthwise along the diameter of said element.
  • On the bottom outer surface of said element 2 is located a locking bush 4 which is movable axially.
  • Said bush is fixed in bottom end position by means of a shoulder 5 and spiral spring 6. At its upper end, said bush abuts a stop washer 7.
  • the bottom end of the longitudinal groove is provided with a stop opening 8. In it is located the retention tooth 9 of the saw blade 10.
  • the upper end of said groove 3 has a uniform longitudinal section whereas at its opposite end the section is larger.
  • a flat spring 11 is configured to fit in said lengthwise groove 3.
  • the upper end of the flat spring 11 is shaped into a fixing tooth 12, which has been bent towards the outer edge of the housing element 2.
  • the width of the longitudinal groove 3 together with the flat spring 11 located in it is larger than the thickness of the saw blade 10 in said longitudinal groove 3.
  • the locking mechanism for saw blades is used in the following way.
  • the latter pushes the locking bush 4 upwards.
  • the locking bush 4 moves downward to reach the shoulder 5 under the influence of the spiral spring 6.
  • the saw blade 10 is removed by raising manually the locking bush 4 and pulling it out of said longitudinal groove 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Drilling Tools (AREA)

Abstract

Selon la présente invention, le mécanisme de blocage comprend un logement (1) présentant un élément (2) attaché de manière fixe audit logement. Une gorge (3) est faite dans le sens de la longueur du diamètre dudit élément (2). Sur la surface extérieure inférieure dudit élément (2) est située une douille d'arrêt (4) qui peut être déplacée de manière axiale. Ladite douille d'arrêt (4) est fixée en position d'extrémité inférieure au moyen d'un épaulement (5) et d'un ressort à spirale (6). A son extrémité supérieure, ladite douille d'arrêt (4) aboute une rondelle d'arrêt (7). L'extrémité inférieure de la gorge longitudinale est équipée d'une ouverture d'arrêt (8). A l'intérieur se trouve la dent de retenue (9) de la lame de scie (10). Un ressort plat (11) est conçu pour s'ajuster dans ladite gorge (3) longitudinale. L'extrémité supérieure du ressort plat (11) se présente sous la forme d'une dent de fixation (12), qui a été pliée vers le bord extérieur de l'élément de logement (2). La largeur de la gorge (3) longitudinale associée au ressort plat (11) situé à l'intérieur est supérieure à l'épaisseur de la lame de scie (10) au niveau de ladite gorge (3) longitudinale.
PCT/BG2001/000004 2001-03-07 2001-03-07 Mecanisme de blocage de lame de scie WO2002070182A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10196185T DE10196185B4 (de) 2001-03-07 2001-03-07 Festspannmechanismus an einer Bearbeitungsmaschine, insbesondere einer Stichsäge
PCT/BG2001/000004 WO2002070182A1 (fr) 2001-03-07 2001-03-07 Mecanisme de blocage de lame de scie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BG2001/000004 WO2002070182A1 (fr) 2001-03-07 2001-03-07 Mecanisme de blocage de lame de scie

Publications (1)

Publication Number Publication Date
WO2002070182A1 true WO2002070182A1 (fr) 2002-09-12

Family

ID=3897302

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2001/000004 WO2002070182A1 (fr) 2001-03-07 2001-03-07 Mecanisme de blocage de lame de scie

Country Status (2)

Country Link
DE (1) DE10196185B4 (fr)
WO (1) WO2002070182A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2716828A1 (fr) * 1994-03-03 1995-09-08 Poe Scie sauteuse pourvue de moyens de fixation rapide d'une lame de scie à talons.
DE19532494A1 (de) * 1995-09-02 1997-03-06 Festo Tooltechnic Kg Schnellspannvorrichtung an einer Bearbeitungsmaschine
FR2745223A1 (fr) * 1996-02-22 1997-08-29 Production Outillage Electr Po Scie sauteuse pourvue de moyens de fixation rapide et de serrage lateral d'une lame de scie a talons

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299402A (en) * 1978-05-02 1981-11-10 Hoffman Simon J Blade holder for saber saw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2716828A1 (fr) * 1994-03-03 1995-09-08 Poe Scie sauteuse pourvue de moyens de fixation rapide d'une lame de scie à talons.
DE19532494A1 (de) * 1995-09-02 1997-03-06 Festo Tooltechnic Kg Schnellspannvorrichtung an einer Bearbeitungsmaschine
FR2745223A1 (fr) * 1996-02-22 1997-08-29 Production Outillage Electr Po Scie sauteuse pourvue de moyens de fixation rapide et de serrage lateral d'une lame de scie a talons

Also Published As

Publication number Publication date
DE10196185T5 (de) 2004-04-22
DE10196185B4 (de) 2009-11-26

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