US 7,451,546 B2
Jigsaw machine
Stefano Delfini, Bettlach (Switzerland); Daniel Saegesser, Langenthal (Switzerland); and Thomas Ruoff, Kaempfelbach-Bilfingen (Germany)
Assigned to Robert Bosch GmbH, Stuttgart (Germany)
Appl. No. 10/581,830
PCT Filed Jul. 07, 2005, PCT No. PCT/EP2005/053256
§ 371(c)(1), (2), (4) Date Jun. 05, 2006,
PCT Pub. No. WO2006/032550, PCT Pub. Date Mar. 30, 2006.
Claims priority of application No. 10 2004 045 624 (DE), filed on Sep. 21, 2004.
Prior Publication US 2007/0107238 A1, May 17, 2007
Int. Cl. B27B 19/04 (2006.01); B23D 51/10 (2006.01)
U.S. Cl. 30—392  [30/393] 5 Claims
OG exemplary drawing
 
1. A hand-held jigsaw machine with a machine housing (11), a saw blade (13) that is drivable in a reciprocating motion by a motor and that includes a sawtooth strip (131) and a saw blade back (132) diametrically opposed thereto, with a support device (20) with a support roller (23) that supports the saw blade on its back (132), a holder (22) that is fixed to the housing (11) and accommodates the support roller (23) between two arms (222, 223), and a guide device (21) for guiding and supporting the saw blade (13) transversely to the saw direction and that includes guide elements (24, 25) located on opposite sides of the saw blade (13) at an adjustable distance from each other,
wherein the guide device (21) is integrated in the holder (22) of the support device (20), wherein the guide elements (24, 25) are designed as guide disks (26, 27) that have an outer diameter that is greater than the outer diameter of the support roller (23) and enclose the support roller (23) between them, wherein the guide device (21) includes a displacement member (28) for axially displacing the guide disks (26, 27), and wherein the displacement member (28) is coupled with a manual actuating member (29), wherein the displacement member (28) has two identical displacement disks (30, 31), the axial width of which varies across the circumference, wherein one displacement disk (30, 31) each is located between a guide disk (26, 27) and an arm (222, 223) of the holder (22), and wherein a compression spring (37) is located in the interior of support roller (23) that bears against the two guide disks (26, 27) and presses against the displacement disks (30, 31).