JPH10166217A - Hand-carrying type machine tool provided with parallel stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a separate fastening means for locking a parallel stopper necessary, and improve its handlability. SOLUTION: A base plate 22 capable of being placed on a work is provided with upward bent parallel side walls 26, 26, and the side walls are provided with notches 32. A guide ruler 34 of a parallel stopper 35 parallels the notches to be lengthwise slidable, and can serve as a guide for the base plate 22 so that it can be positionedfixed to the base plate. The upward bent side walls 26 of the base plate 22 have the notches 32 arranged so as to be matched with the side wall on the rear side, close to the side wall 28 on the rear side. The guide ruler 34 can be inserted into the notches especially from above, the base plate 22 holds a curved flat spring 29 in the range of the side wall 28 on the rear side, and the inserted guide ruler 34 can be supported by the flat spring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand-held machine tool, which is provided with a base plate that can be mounted on a work, and the base plate has parallel side walls bent upward. , The side wall is provided with a notch, and the guide ruler of the parallel stopper can be guided so as to be parallel to the notch and slidable in the longitudinal direction so as to be fixed to the base plate.

[0002]

2. Description of the Related Art Hand-held machine tools in which a hand-held machine tool formed as a turning saw is provided with a parallel stop are already known from EP 0157005. In this known hand-held machine tool, a parallel stop is passed through a notch through an upwardly bent side wall provided in a base plate of the grinding saw, and is hooked onto the base plate with respect to the base plate. Further, it can be detachably locked by a tightening device provided with a tightening screw.

[0003] Such an arrangement has the advantage that the clamping device can be disengaged from the saw together with the parallel stopper if it is not desired to carry out an operation using the parallel stopper. However, this clamping device is a separate component with a relatively cumbersome structure, and the clamping screw must be turned for disengagement or locking.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to improve a hand-held machine tool of the type mentioned at the outset, so that a separate clamping means for locking the parallel stop is not required, and moreover. It is an object of the present invention to provide a hand-held machine tool that is lightweight and has better handleability for adjusting various parallel cuts.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, according to an embodiment of the present invention, an upwardly bent side wall of a base plate is close to and close to a rear side wall. A guide ruler is insertable in this notch, in particular from above, and the base plate is provided with a curved leaf spring in the region of the rear side wall. It is held so that the inserted guide ruler can be supported by the leaf spring.

[0006]

The hand-held machine tool according to the present invention has the following advantages. That is, since a separate fastening means for locking or unlocking the parallel stopper is not required for the hand-held machine tool, the parallel stopper is reciprocated in a ratchet manner without separately rotating the fastening screw. Adjustable.

Since the fastening means is formed on the base plate and formed as a leaf spring having a hook-shaped grip, the base plate or the entire hand-held machine tool can be manufactured at low cost. It is possible and lighter. in this case,
Such a fastening means allows a particularly smooth and quick stepless adjustment of the parallel stop.

The fact that the leaf spring is integrated into the rear side wall of the base plate makes the base plate and thus the entire hand-held machine tool particularly lightweight and easy to use.

Since the rear side wall has a slit-shaped notch in the bent area from the base plate in parallel with the base plate, the integrally incorporated leaf spring can be formed, for example, by stamping. It can be easily manufactured.

Since the notch is undercut on the side wall so that the guide ruler can be penetrated, the inserted guide ruler cannot be advanced upward, and therefore the guide ruler is easily prevented from being lost. ing.

[0011] The leaf spring has, on the side facing the guide ruler, at least one inclined surface supported by the guide ruler, and the inclined surface attempts to press the guide ruler downwardly against the base plate. Thereby, the parallel stopper is also prevented from being lost on the other long side.

The leaf spring and the guide ruler are formed in a form-fitting manner, ie, by fitting, into and out of each other by notches and / or projections engaging with each other in and out, so that they can be parallelized. In particular, locking of the stopper in which slippage is prevented can be achieved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a grinding saw 10 in a perspective view. The grinding saw 10 includes a motor housing 12 serving as a main hand grip, and a transmission housing 14 is flanged to the motor housing 12. The transmission housing 14 carries a knob-shaped grip 16 serving as an auxiliary handgrip in the upper region and a stroke rod 18 in the downwardly directed region.
Holding. The stroke rod 18 holds the saw blade 20 for lifting operation. The transmission housing 14 is pivotally movable via a joint 24 to the base plate 22.
And can be adjusted to different angular positions of the saw blade 20 with respect to the base plate 22 via means not shown. The base plate 22 holds two upwardly bent side walls 26, both side walls 26, immediately adjacent the rear side wall 28, holding an open notch 32 at the top. A parallel stopper 35 can be inserted into the notch 32 by its guide ruler 34 and slidably lockable. Guide ruler 3 on the right as seen in the drawing
4 holds a side stop portion 36 which serves to abut against a guide edge, for example the outer edge of the board to be cut. Restoration saw 10
Can be guided parallel to the guide edge by the side stopper portion 36 during sawing, so that a parallel and straight cut can be guided. The guide ruler 34 is supported by the leaf spring 29 on a small width surface 33 adjacent to the rear side wall 28. The leaf spring 29 is supported in contact with the rear side wall 28, and is disposed on the side wall 28 so as not to be lost. The leaf spring 29 is curved and is pre-loaded or pre-loaded on the narrow surface 33 so that the guide ruler 34
Alternatively, the entire parallel stopper 35 is fastened and fixed to the base plate 22.

When the leaf spring 29 is separated from the narrow surface 33 of the guide ruler 34 by the hook-shaped grip 30 provided on the leaf spring 29, the desired position of the side stopper portion 36 with respect to the specified tool engagement line is achieved. The guide ruler 34 can be easily reciprocated in a stepless manner without resistance until the guide ruler 34 is moved.

FIG. 2 shows a hand-held circular saw 40. The hand-held circular saw 40 includes a motor housing 42, which holds an upwardly directed handgrip 46 and a saw blade housing 44. The saw blade housing 44 covers the saw blade 50 in the upper region. A turning hood 51 is put on the saw blade 50 on the lower side. The saw blade housing 44 is pivotally connected to the base plate 52 via a joint 54 in the lower region. The saw blade housing 44 is connected to the base plate 52 by the motor housing 42 and the saw blade 5.
By moving it with 0 (not described in detail), various beveling angles can be adjusted. The base plate 52 has two vertical side walls 56 parallel to each other. The side walls 56 extend parallel to the feed direction. The side walls 56 transition to a front side wall 57 and a rear side wall 58 bent upward. The side walls 56 are adjacent to the rear side wall 58 and hold one open guide opening 62 at the top. The guide ruler 64 of the parallel stopper 65 is inserted into these guide openings 62.

A guide ruler 64 is provided on the opposite side of the machine for applying and supporting the hand-held circular saw 40 on a guide edge, not shown, for example a guide strip or the outer edge of the workpiece to be cut. Side stopper part 66 of
Holding. The guide ruler 64 has a narrow surface 63,
A curved leaf spring 59 is fixed to the rear side wall 58 so as not to be lost, and is detachably fastened and fixed.

FIG. 3 is a partial cross-sectional view of another embodiment of the base plate 82. Base plate 82
Has two parallel side walls 86 bent perpendicularly upward and a rear side wall 88. The rear side wall 88 is formed as a curved leaf spring. The rear side wall 88 is partially separated from the base plate 82 by parallel longitudinal slits 89 located in the area where the side wall 88 is bent from the base plate 82. As a result, the rear side wall 88 curved in the direction of the guide opening 92 can be relatively easily displaced by operating the grip 90, so that the parallel stopper 95 can be easily moved to a desired position. It can be adjusted steplessly.

The open guide opening 92 has a slit-like, undercut-shaped locking notch 98 on the left side as viewed in the drawing. A small width surface 93 ′ on the left side as viewed in the drawing of the guide ruler 94 is fitted into the locking notch 98 so as to be prevented from being lost.

FIG. 4 shows a part of the embodiment shown in FIG. 3 in a longitudinal sectional view. In this case, the base plate 82
The contour of the upper open lateral guide opening 92 provided with the locking notch 98 and the function of the rear side wall 88 acting as a leaf spring can be clearly seen. The small width surface 93 ′ on the left side as viewed in the drawing of the guide ruler 94 is obliquely fitted into the locking notch 98, and the small width surface 93 on the right side in the drawing is in the inclined position,
It is supported on the corresponding edge of the rear side wall 88. Since the rear side wall 88 holds the inclined surfaces 97 at the upper and lower parts, the guide ruler 94 can be inserted into the guide opening 92 from above particularly easily as shown in FIG.

The guide ruler 94 shown in FIG. 5 is ready for use. In this case, the guide ruler 94
Is inserted into the guide opening 92, and the upper edge of the narrow surface 93 on the right side in the drawing is formed on the lower inclined surface 9 on the rear side wall 88.
7 supported. This inclined surface 97 is formed by a guide ruler 94.
The lower edge of the narrow surface 93 is pressed downward against the base plate 82, thereby preventing the parallel stopper 95 from inadvertently moving upward. Prevents loss.

Hook-shaped grip 90 on rear side wall 88
Can be released in a direction away from the parallel stopper 95 toward the right side in the drawing, so that the tightening pressure on the guide ruler 94 can be released. This guide ruler 94
Can be easily and steplessly moved to a desired position of the side stopper portion 96.

FIG. 6 is an exploded perspective view similar to FIG. However, the parallel stopper 115 holds a guide ruler 114 different from that of the embodiment of FIG. A small width surface 113 of the guide ruler 114 on the right side as viewed in the drawing holds a plurality of notches 120 'and projections 119' in a regular arrangement. Correspondingly, the rear side wall 108, which is formed as a leaf spring as in the embodiment of FIG. 3, also has a notch 120 and a projection 119 is held. When the rear side wall 108 is pulled back when the hook-shaped grip 110 is operated, the parallel stopper 115 is moved smoothly, that is, in a ratchet manner until the desired distance between the side stopper portion 116 and the base plate 102 is achieved. , Can be slid in the guide opening 112. Instead of the rear side wall 108, a front side wall (not shown) and a guide opening 112 of the side wall 106 at an appropriate distance from the front side wall can be provided. And can be movably arranged.

[Brief description of the drawings]

FIG. 1 is a perspective view of a grinding saw provided with a parallel stopper according to the present invention.

FIG. 2 is a perspective view of a hand-held circular saw having a parallel stopper according to the present invention.

FIG. 3 is an exploded perspective view of a base plate and an associated parallel stopper.

FIG. 4 is a longitudinal sectional view showing a process of inserting a parallel stopper shown in FIG. 3;

5 is a longitudinal sectional view showing a state in which the parallel stopper shown in FIG. 4 is locked to a base plate.

FIG. 6 is an exploded perspective view of a parallel stopper and a base plate that can be locked in a form-connected manner.

[Explanation of symbols]

10 grinding saw, 12 motor housing, 14
Transmission housing, 16 grips, 18 stroke rod, 20 saw blades, 22 base plate, 24
Joint, 26 side wall, 28 rear side wall,
29 leaf spring, 30 grip, 32 notch,
33 small width surface, 34 guide ruler, 35 parallel stopper, 36 side stopper part, 40 hand-held circular saw, 42 motor housing, 44 saw blade housing, 46 hand grip, 50 saw blade, 51
Swing hood, 52 base plate, 54 joint, 56 side wall, 57 front side wall, 58 rear side wall, 59 leaf spring, 62 guide opening, 6
3 small width surface, 64 guide ruler, 65 parallel stopper, 66 side stopper part, 82 base plate, 86 side wall, 88 rear side wall, 89 longitudinal slit, 90 grip, 92 guide opening,
93, 93 'narrow surface, 94 guide ruler, 95
Parallel stopper, 96 Side stopper, 97
Inclined surface, 98 locking notch, 102 base plate, 106 side wall, 108 rear side wall, 11
0 grip, 112 guide opening, 113 narrow surface, 114 guide ruler, 115 parallel stopper,
116 Side stopper portion, 119, 119 '
Protrusion, 120, 120 'notch

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Steffen Weber Filderstadt Roggenstrasse 69 Germany

Claims (8)

[Claims] A hand-held machine tool (10, 40) comprising a base plate (22, 52,
82, 102), and the base plate has parallel side walls (26, 102) bent upward.
28, 56, 57, 86, 88, 102, 108), and the side walls are notched (32, 62, 92, 11).
2), and a parallel stopper (35, 6
5,95,115) guide rulers (34,64,94,
114) can be guided parallel and longitudinally slidably to the base plate (22, 52, 82, 102) so that the position can be fixed to the base plate (22, 52, 82, 102). Upwardly folded sidewalls (26, 56, 86, 106) are positioned near and aligned with the rear sidewalls (28, 58, 88, 108). Notch (3
2, 62, 92, 112) into which the guide rulers (34, 64, 94, 114) can be inserted, and the base plate (22, 52, 82, 102)
A curved leaf spring (29, 59, 88, 108) is held in the range of the rear side wall (28, 58, 88, 108), and the guide ruler (3) inserted into the leaf spring is inserted into the leaf spring.
4, 64, 94, 114), wherein the hand-held machine tool has a parallel stopper. 2. The leaf spring (29, 59, 88, 10).
8) is a grip (3
2. The hand-held machine tool according to claim 1, wherein the hand-held machine tool holds (0, 60, 90, 110). 3. A rear side wall (88, 10) of the base plate (82, 102).
The hand-held machine tool according to claim 1 or 2, which is incorporated in (8). 4. A slit-shaped notch (89, 109) parallel to the base plate (82, 102) in a range where the rear side wall (88, 108) is bent from the base plate (82, 102). 4. The hand-held machine tool according to claim 3, comprising: 5. The notch (32, 62, 92, 11)
2) is undercut on the side opposite to the rear side wall (28, 58, 88, 108), and the inserted guide ruler (34, 64, 94, 114) is notched (32). The hand-held machine tool according to any one of claims 1 to 4, wherein the hand-held machine tool is prevented from moving out of the vehicle. 6. The leaf spring (29, 59, 88, 10).
8) has at least one inclined surface (97) supported by the guide ruler (34, 64, 94, 114), and the inclined surface (97) has the guide ruler (34, 64, 9).
, 114) downward to the base plate (22,
The hand-held machine tool according to any one of claims 1 to 5, wherein the hand-held machine tool is about to be pressed against the machine tool (52, 82, 102). 7. Hand-held tool according to claim 1, wherein the leaf spring (108) is engageable with the guide ruler (114) in a form-fitting manner, ie by fitting. machine. 8. The leaf spring (108) or the rear side wall (28, 58, 88) carries at least one notch and / or protrusion (119, 120),
The notch and / or the protrusion is used as a guide ruler (114).
At least one projection and / or notch (119 ', 120') provided in the housing.
8. The hand-held machine tool according to any one of items 1 to 7.