RECIPROCATING SAW WITH FASTENING DEVICE FOR A SAW BLADE

Abstract

A reciprocating saw has a saw blade, a fastening device provided for the saw blade and holding the saw blade in a non-rotating fashion, a reciprocating lifting rod having a free end supporting the fastening device, a locking element provided for axially fixing the saw blade in the fastening device, and having an adjusting spring that acts in a direction of the saw blade, wherein the locking element is movable between a release position and a locked position and holds the saw blade in the locked position in a form-locked fashion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a longitudinal section through the fastening device in accordance with the present invention,

FIG. 2 is a depiction of the fastening device, viewed in the Y direction, in which the housing part is not shown in accordance with the present invention,

FIG. 3 shows the housing part that is not shown in FIG. 2 in accordance with the present invention,

FIG. 4 is a side view of the fastening device, viewed in the X direction in accordance with the present invention,

FIG. 5 is a sectional depiction of the fastening device along the cutting line B-B according to FIG. 1 in accordance with the present invention,

FIG. 6 is an incomplete sectional depiction of the fastening device along the cutting line A-A according to FIG. 2 in accordance with the present invention,

FIG. 7 shows a lifter rod with a connecting piece,

FIG. 8 is a depiction of the lifter rod rotated by 90° in relation to FIG. 7,

FIG. 9 is a sectional depiction of the lifter rod along the cutting line C-C according to FIG. 7 in accordance with the present invention,

FIG. 10 is a sectional depiction of another embodiment of a fastening device in accordance with the present invention,

FIG. 11 is a depiction of the fastening device according to FIG. 11, viewed in the Y direction, in which the housing part is not shown in accordance with the present invention,

FIG. 12 is a sectional depiction of the fastening device along the cutting line D-D according to FIG. 10 in accordance with the present invention, and

FIG. 13 shows a jigsaw in accordance with the present invention.

Claims

1. A reciprocating saw, comprising a saw blade; a fastening device provided for said saw blade and holding said saw blade in a non-rotating fashion; reciprocating lifting rod having a free end supporting said fastening device; a locking element provided for axially fixing said saw blade in said fastening device, and having an adjusting spring that acts in a direction of said saw blade, said locking element being movable between a release position and a locked position and holding said saw blade in said locked position in a form-locked fashion.

2. A reciprocating saw as defined in claim 1, wherein said saw blade has a recess, said locking element being supported so that it is movable in a lateral direction in relation to said saw blade and in the locked position engages in said recess of said saw blade.

3. A reciprocating saw as defined in claim 2; and further comprising a release button moving said locking element counter to a spring force of said adjusting spring out of said recess and into said release position.

4. A reciprocating saw as defined in claim 3, wherein said release button and said locking element are situated on opposite sides of said saw blade.

5. A reciprocating saw as defined in claim 1, wherein an element selected from the group consisting of said saw blade, said locking element and both has an oblique contact surface configured to move said locking element into its release position as said blade is being inserted axially into said fastening device.

6. A reciprocating saw as defined in claim 1, wherein said locking element is configured as a pin.

7. A reciprocating saw as defined in claim 1, wherein said adjusting spring is configured as a coil spring.

8. A reciprocating saw as defined in claim 1, wherein said locking element is configured as a pin, while said adjusting spring is configured as a coil spring.

9. A reciprocating saw as defined in claim 1, wherein said adjusting spring is integrally joined to said locking element.

10. A reciprocating saw as defined in claim 9, wherein said adjusting spring is configured as a leaf spring.

11. A reciprocating saw as defined in claim 2 wherein said saw blade has a slot extending in an axial direction from its fastening end to said recess for said locking element.

12. A reciprocating saw as defined in claim 1; and further comprising an ejection spring which exerts spring force on said saw blade in an axial direction counter to an insertion direction.

13. A reciprocating saw as defined in claim 1, wherein said fastening device has a housing composed of two half-shell which are joinable to each other; and a metal insert piece located inside of said housing and securing said saw blade in a non-rotating fashion.

14. A reciprocating saw as defined in claim 13, wherein said housing having said two half-shells is composed of plastic.

15. A reciprocating saw as defined in claim 13, wherein said two half-shells are joinable to each other in detent fashion.

16. A reciprocating saw as defined in claim 13; and further comprising a connecting piece which is attached to said lifting rod and enclosed by said two half-shells in form-locked manner.