JPH1142608A - Bench circular sawing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obstruct the start-up of a motor in a state that it does not move slantwise downward by a method in which an obstruction means obstructs the start-up of the motor by an operation means with a main body locked by a lock means. SOLUTION: With a circular sawing machine main body 4 positioned at an upper dead point, a lock pin is coupled with the lower part of the control long hole of an actuation link, the slant movement of the actuation link is regulated by the cooperation with a roller pin engaged with the upper end of the control long hole, and the main body 4 is held at the upper dead point. The rotational movement of a safety cover 18 in the direction to expose a circular saw blade is hindered, and the exposure of the blade is hindered. The stopper part 41 of a lever 34 is made in the opposite state of the end 18a of the cover 18, the rotational movement in the direction to expose the circular saw blade of the cover 18 is hindered double. In this state, the stopper plate 43c of a lock-off button 43 contacts the end surface 16b of a trigger 16 which forms the inlet of a receiving groove 16a to prevent the push of the trigger 16, preventing the start-up of a motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tabletop circular saw machine.

[0002]

2. Description of the Related Art In general, a desk circular saw of this type includes a base and a circular saw main body attached to the base so as to be vertically tiltable, and the circular saw main body is a motor for rotating a circular saw blade. A blade case that partially covers the circular saw blade, a cover position that covers the circular saw blade exposed from the blade case, and a safety cover that is movable to an exposed position that exposes the circular saw blade. ing. In such a tabletop circular sawing machine, a device provided with means for moving the safety cover from the cover position to the exposure position as the circular sawing machine body descends from the top dead center position has been proposed. As means, for example, those utilizing the gravity of the safety cover or utilizing various link mechanisms linked to the movement of the circular saw machine body are known. In addition, these desk circular saws are provided with a lock device for keeping the circular saw main body at the top dead center position when not in use for safety of work. Kimiaki 62-52
No. 89, Japanese Patent Publication No. 60-71113 and German Patent No. 3119573 disclose a structure in which a circular saw body is directly fixed on a base.

[0003]

In the above-mentioned conventional locking device, the circular sawing machine itself can be maintained at the top dead center position, but the locking function of maintaining the safety cover at the cover position cannot be performed. There is a disadvantage that the circular saw blade may be exposed due to inadvertent movement of the safety cover.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, a tabletop circular sawing machine according to the present invention comprises a base, and a circular sawing machine main body mounted to be tiltable up and down with respect to the base. The saw body is a motor that rotationally drives the circular saw blade, a blade case that partially covers the circular saw blade, a cover position that covers the circular saw blade exposed from the blade case, and an exposure that exposes the circular saw blade. A safety cover movable to and
The safety cover is tiltably attached to the base so that the base and the safety cover are tilted downward from a top dead center position of the circular saw body so that the safety cover moves from the cover position to the exposure position. Table circular saw having an operating link movably linked to the circular saw, wherein the circular saw is provided with a lever attached to the body of the circular saw, the lever being capable of restricting movement of the safety cover to the exposed position at the cover position. Is done.

[0005] The circular saw machine body further includes a lock pin capable of locking an operating link when the circular saw machine body is located at the top dead center position. The lock pin is arranged so as to be able to fit into the control long hole of the operating link when the circular sawing machine body is located at the top dead center position, and the lock pin is provided with a spring. It is preferable that the lever is always urged toward the fitting position with respect to the control slot, and is linked to the lever so that the lever can move from the fitting position with respect to the control slot to the disengagement position.

Further, it is preferable that the lever can operate a lock-off switch for locking a trigger for starting and stopping the motor at a motor stop position.

[0007]

In the tabletop circular saw machine according to the present invention, the movement of the safety cover from the circular saw blade exposing position to the cover position is restricted by the lever, and this prevents the operating link from tilting with respect to the base. The positional relationship between the main body and the operation link is fixed, and the downward tilting of the circular saw body from the top dead center position is restricted.

In addition, by directly locking the operation link with the lock pin, and particularly by fitting the lock pin into the control slot of the operation link, the circular saw body is more securely locked at the top dead center position. can do.

Further, the lock pin is always urged by the spring toward the fitting position with respect to the control elongated hole,
The locked state can be reliably maintained, and if the lock pin is disengaged from the engagement with the control slot by operating the lever, the circular sawing machine can be tilted downward. In addition, since the operating link also tilts by lowering from the top dead center position of the circular sawing machine main body, even if the lever is released, the lock pin does not fit into the control elongated hole but only abuts the operating link and locks again. The safety cover can be kept in a position that allows the safety cover to move to the circular saw blade exposure position.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a tabletop circular saw 1 entirely shown in a front view and a rear view, respectively. 2, a fixed arm 3 erected and fixed to the base 2, and a circular saw main body 4 mounted on the fixed arm 3 and opposed to the base 2 so as to be tiltable in a vertical direction. On the upper surface of the base 2, a fence member 5 for guiding a side surface of the work is attached.

As shown in FIG. 3, the circular saw body 4 has a motor housing 7 containing a motor 6 and a gear housing 1 containing a reduction gear 9 meshed with a motor shaft 8 of the motor 6.
0, a blade case 13 accommodating a circular saw blade 12 exchangeably mounted on the output shaft 11 of the reduction gear 9, and a connecting portion 14 between the fixed arm 3 provided on the blade case 13 (see FIGS. 1 and 2). 2).

An operation handle 15 for vertically operating the circular saw machine body 4 is provided on a part of the outer periphery of the motor housing 7 so as to project therefrom.
A trigger 16 for activating a switch (not shown) for starting and stopping is provided. The connecting portion 14 is rotatably connected to the fixed arm 3 via a support shaft 17, and the circular saw body 4 can be tilted up and down around the support shaft 17 by operating the operation handle 15. I have. Further, between the fixed arm 3 and the connecting portion 14, a circular saw main body 4 is provided.
(Not shown) that constantly urges the spring upward.

As shown in FIG. 3, an opening 13a is formed in a portion of the blade case 13 facing the center of the circular saw blade 12, and a mounting plate 19 for mounting a safety cover 18 is formed in the opening 13a. The mounting plate 19 has one end side supported by the supporting screw 20 so as to be tiltable with respect to the blade case 13, and the other end side detachably fastened to the blade case 13 by a fixing bolt 21. I have.

Opening 1 provided at the center of mounting plate 19
A cap 22 has a substantially fan-shaped safety cover 18 that covers a portion of the circular saw blade 12 exposed from the blade case 13 from the outside of the blade case 13. 24. A spiral spring 25 having one end secured to the mounting plate 19 and the other end secured to the safety cover 18.
2 urges in the clockwise direction (return rotation direction) in FIG.
It usually covers a portion of the circular saw blade 12 exposed from the blade case 13.

On the back surface of the cap 22, the cap 22
A control abutting plate 27, which is in contact with one end of an operation link 26 for controlling the rotation of the actuator, is protrudingly provided.
Alternatively, as shown in FIG. 2, the other end is tiltably connected to an upper end of a bracket 28 erected below the fixed arm 3 via a support pin 29. An arc-shaped control slot 30 is formed at the center of the operation link 26 in the longitudinal direction of the operation link 26, and a roller pin 31 attached to the blade case 13 is fitted into the control slot 30. doing. The radius of curvature of the circular arc portion on one side of the control elongated hole 30 is set smaller than that of the circular arc portion on the other side. The operating link 26 is tilted by the control of the roller pin 31 fitted in the control elongated hole 30 with the downward tilting of the circular saw machine body 4, and is brought into contact with the control abutment plate 27 of the cap 22. One end of the safety cover 18 together with the cap 22 is pressed against the urging force of the spring 25 as shown in FIG.
At a position counterclockwise, exposing the circular saw blade 12.

On the back side of the circular sawing machine body 4, the circular sawing machine body 4 is positioned at the top dead center shown in FIGS. 1 and 2, ie, as shown in FIG. 3
A lock device 32 for keeping the position fitted to the upper end 30a of the “0” is provided. As shown in FIG. 2, the locking device 32 is located at a position slightly eccentric with respect to the center of the circular sawing machine main body 4 and the center in the radial direction passing through the center of the circular sawing machine main body 4 and its pivot point, that is, the center of the support shaft 17. A rod 33 extending substantially parallel to the line L; a lever 34 having one end connected to the rod 33 and the other end projecting in the same direction as the operation handle 15 beyond the outer peripheral portion of the blade case 13; It has a lock plate 35 which is fixed and the other end of which extends to the intersection with the operation link 26.

At the lower end of the lock plate 35, there is formed a groove 37 for engaging with a lock pin 36 inserted into the connecting portion 14 of the circular saw machine body 4. As shown in FIG. 4, the groove 37 has a circular portion 37a and an elongated hole 37b continuous with the circular portion 37a. The elongated hole 37b extends in a direction substantially perpendicular to the rod 33 from the circular portion 37a. ing.

As shown in FIG. 5A, the front and rear side plates 14a and 14a of the connecting portion 14 of the circular saw body 4 are opposed to each other.
Insertion holes 38 and 39 for the lock pin 36 are formed in the 14b, and the lock pin 36 is held between the side plates 14a and 14b with one end and the other end inserted into the insertion holes 38 and 39, respectively. The lock pin 36 is provided with a collar 40 having a diameter larger than the diameter of the insertion holes 38 and 39 substantially in the middle, and the distance between the collar 40 of the lock pin 36 and the end on the side plate 14a side is between the side plates 14a and 14b. The length is slightly longer than the distance, and as shown in FIG. 5B, the end on the side plate 14a side is inserted into the insertion hole 3 while the collar 40 is in contact with the rear side plate 14b.
9 so as to be in a non-projecting state to the outside.

At the other end of the lock pin 36, a small-diameter neck portion 3 that fits into the long hole 37b of the groove 37 of the lock pin 36 is provided.
6a are formed, and the head 36b at the tip is
5 and is connected to the lock plate 35. The circular portion 37a of the groove 37 has a larger diameter than the head 36b at the tip of the lock pin 36,
When the lock pin 36 is attached to the lock plate 35, it serves as an insertion hole for the head 36b.

Also, between the end of the connecting portion 35a of the lock plate 35 and the rod 33 and the back surface of the blade case 13 facing the lock plate 35, the lock pin 36 moves the lock pin 36 toward the operation link 26. A compression coil spring 45 that urges the blade case 13 in the clockwise direction in FIG. 5A around the rod 33 is interposed.
Rib 4 for receiving and shielding it from the outside
6 are integrally formed.

The connecting portion 1 of the circular saw machine body 4 of the lock pin 36
When the circular saw machine body 4 has reached the top dead center position, the lock pin 3 is attached to the lock pin 3 as shown in FIG.
6 faces the lower part of the control slot 30 of the operating link 26, and as shown in FIG. 5A, the lock pin 36 is set to be engageable with the lower part of the control slot 30 of the operating link 26 by the urging force of the compression coil spring 45. Have been.

Lever 34 connected to the upper end of rod 33
Is provided with a gripping portion 47 by the operator at the distal end portion.
When the operator moves the lever 34 in the direction away from the blade case 13 in FIG. 2 while holding the grip portion 47 from the state shown in FIG. 2A, the lock plate 35 rotates against the urging force of the compression coil spring 45. Then, as shown in FIG. 5B, the lock pin 36 can be detached from the control long hole 30 of the operation link 26.

As shown in FIG. 2, the lever 34 has the circular saw machine body 4 at the top dead center, and the circular saw blade 12 is completely covered by the safety cover 18. As shown in FIG. 6A, a stopper bent toward the blade case 13 at a position close to the end 18 a in the direction of arrow A in FIG. 2 (the end in the rotating direction exposing the circular saw blade 12). A portion 41 is provided. When the lock pin 36 shown in FIG. 5A is engaged with the lower part of the control slot 30 of the operation link 26, the stopper portion 41 faces the end portion 18a of the safety cover 18, and the circular saw blade of the safety cover 18 5B, while preventing rotation in the direction of exposing 12
The lock pin 36 shown in FIG.
0 in the disengaged state with respect to the circular saw blade 12 of the safety cover 18.
Is allowed to rotate in the direction in which the image is exposed. Also,
An L-shaped thick portion 42 is integrally formed at a portion of the end portion 18a of the safety cover 18 facing the stopper portion 41.

As described above, the lever 34 extends in the same direction as the operation handle 15, and as shown in FIG. 6A, the grip portion 47 of the lever 34 of the operation handle 15 is provided.
A lock-off button 43 linked to the trigger 16 is attached to the part opposite to the operation handle 15 so as to be able to move in and out of the operation handle 15. The lock-off button 43 is provided on the shaft 4 slidably attached to the operation handle 15.
3a and a shaft portion 43 located outside the operating handle 15
A head 43b having a larger diameter than a and a stopper plate 43c located inside the operation handle 15 and locked in a groove 15a formed on an inner wall of the operation handle 15 are provided. A spring 44 for constantly urging the lock-off button 43 outwardly of the operation handle 15 is provided between the stopper plate 43c and the inner wall of the operation handle 15 opposed to the stopper plate 43c and having the groove 15a. Intervened.

Here, when the lock pin 36 of FIG. 5A is engaged with the lower part of the control slot 30 of the operation link 26, the lever 34 is located at a position separated from the lock-off button 43. As shown in FIG. 6A, the stopper plate 43c is locked to the groove 15a to be kept in the protruding position with respect to the operation handle 15, and the lever 34 is used to release the lock pin 36 from the control slot 30 of the operation link 26. When you move to the state of 5B,
As shown in FIG. 6B, the head 43a of the lock-off button 43
Is pressed by the lever 34, the lock-off button 43 is pushed into the operation handle 15 against the spring 44, and the head 43a is set to reach the push position where it comes into contact with the outer surface of the operation handle 15.

The trigger 16 has a substantially U-shaped cross section.
Inside the operation handle 15, a receiving groove 16a that can receive a part of the stopper plate 43c of the lock-off button 43 is formed. When the lock-off button 43 is in the pushing position shown in FIG.
Forms the entrance of the receiving groove 16a.
6B to prevent the trigger 16 from being pushed.
In the protruding position shown in (1), the stopper plate 43c is located to face the receiving groove 16a, so that the motor 6 can be started by pushing the trigger 16.

Next, the operation of the above embodiment will be described.
First, when the circular saw body 4 is located at the top dead center position shown in FIGS. 1 and 2, as shown in FIG.
6 is engaged with the lower part of the control slot 30 of the operation link 26, and the upper end 30 of the control slot 30 of the operation link 26 is set.
The tilting of the operating link 26 is regulated by the cooperation with the roller pin 31 fitted in a, and the circular saw machine body 4 is maintained at the top dead center position. The circular saw blade 1 of the safety cover 18
Rotation in the direction in which the circular saw blade 2 is exposed is prevented, and the circular saw blade 12 is prevented from being exposed. In this state, as shown in FIG. 6A, since the stopper portion 41 of the lever 34 is opposed to the end 18a of the safety cover 18, the rotation of the safety cover 18 in the direction of exposing the circular saw blade 12 is two times. Heavily prevented.
Further, in this state, the stopper plate 43c of the lock-off button 43 abuts on the end face 16b of the trigger 16 forming the entrance of the receiving groove 16a to prevent the trigger 16 from being pushed and prevent the motor 6 from starting.

Next, the lever 34 is moved to the compression coil spring 4
5 moves out of the blade case 13 against FIG.
As shown in FIG. 6B, the lock pin 36 is disengaged from the control slot 30 of the operating link 26, and at the same time, the stopper 41 of the lever 34 is moved to the end 1 of the safety cover 18 as shown in FIG.
2a, the circular saw machine body 4 is tilted downward by gripping the operation handle 15 and the safety cover 18 is rotated in the direction in which the circular saw blade 12 is exposed (see FIG. 2). (Rotation in the direction opposite to the arrow A) becomes possible. Further, as the lock-off button 43 separates from the head 43a of the lock-off button 43 of the lever 34, the lock-off button 43 reaches the protruding position shown in FIG. 6B by the action of the spring 44. With mating,
The motor 6 can be started by pressing the trigger 16.

When the operation handle 15 is grasped from this state and the circular saw body 4 is tilted downward, the operation link 26 is tilted due to the movement of the engagement position of the roller pin 31 with the control elongated hole 30 of the operation link 26. The safety cover 18 rotates in the direction of arrow A in FIG. 2 to expose the circular saw blade 12.

When the circular saw machine body 4 is tilted downward from the top dead center position at one end, even if the lever 34 is released,
The lock pin 36 comes into contact with the periphery of the control slot 30 of the operation link 26 to maintain the state shown in FIGS. 5B and 6B.
The rotation of the circular saw blade 12 in the direction of exposing the circular saw blade 12 is performed without any trouble, and the work of cutting the work can be performed by the circular saw blade 12 by starting the motor 6 by pressing the trigger 16.

When the operating handle 15 is released after the work is cut, the circular saw body 4 returns to the top dead center position by a spring (not shown). By the urging force of the compression coil spring 45, the operation link 26 is automatically returned to the engagement position with the control elongated hole 30, and the above-described top dead center lock function can be performed again.

[0032]

According to the tabletop circular sawing machine of the present invention, the lock at the top dead center position of the circular sawing machine body and the locking at the circular saw blade cover position of the safety cover can be simultaneously performed by the lever. Inadvertent exposure of the saw blade is prevented. Further, there is no need to separately provide a lock device for the circular sawing machine body and a lock device for the safety cover, so that there is an advantage that the structure is simplified.

Further, the locking function is further improved by directly locking the operating link with the lock pin, particularly by fitting the lock pin into the control elongated hole of the operating link.

Further, the lock pin is always urged by the spring toward the fitting position with respect to the control slot, so that
There is an advantage that the operability of locking and unlocking is improved.

[Brief description of the drawings]

FIG. 1 is a front view of a desk circular saw according to an embodiment of the present invention.

FIG. 2 is a rear view of FIG. 2;

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view of the lock plate shown in FIG. 2;

5 is a sectional view taken along line VV of FIG. 2 and FIG.
FIG. 7 is a sectional view similar to FIG. A, showing a state in which the lock pin is detached from the control slot of the operation lever.

6 is a view taken along the line VI-VI in FIG. 2, and FIG. 6 is a view similar to the view shown in FIG. 5, corresponding to the state shown in FIG. It is.

[Explanation of symbols]

 Reference Signs List 1 desktop circular saw machine 2 base 4 circular saw machine body 6 motor 12 circular saw blade 13 blade case 16 trigger 18 safety cover 26 operating link 30 control long hole 31 roller pin 34 lever 36 lock pin 41 stopper section 43 lock-off button 45 compression coil spring

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 21, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

[0007] be able to keep the top dead center position circular saw Body in locking device of the prior art
Inadvertent driving of the motor at the top dead center position cannot be prevented.
No.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

In order to solve the above-mentioned problems of the prior art, a tabletop circular saw according to claim 1 of the present application comprises a base,
Circular sawing machine attached to be able to tilt up and down with respect to the base
And a circular saw blade provided in the circular saw body to rotationally drive the circular saw blade.
Motor, operating means for starting the motor,
For preventing activation of the motor by the operating means.
Locking means and locking the circular saw body at the top dead center position
Locking means operable for
When the step locks the circular saw machine body at the top dead center position,
And the blocking means starts the motor by the operating means.
It is configured to prevent movement.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] Further , the tabletop circular saw machine according to claim 2 is based on claim 1.
Wherein the operating means is a trigger and the blocking means is
Between the allow position and the stop position allowing the operation of the trigger
A lock-off button capable of moving
When the circular saw machine is locked at the top dead center position by
A lock-off button is located in the blocking position and the lock-off button is
When the lock by the lock means is released, the lock-off button
Is located at the release position .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] Further, the tabletop circular saw machine of claim 3 is claim 2.
In the above, the trigger and the lock-off button are
Operable by user to move circular saw body up and down
The locking means is provided on one end side.
A lock for locking the table circular saw to the top dead center position.
Extending in the same direction as the handle at the other end.
And a rod having a lever, wherein the lever has
A grip portion for gripping by a user is provided.
The grip is located opposite the lock-off button, and
The lock-off button is operated by a holding part.
It is.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

In the tabletop circular saw machine according to the first aspect of the present invention, the circular saw
The board body is locked at the top dead center position by locking means
The motor cannot be started in the state.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

The tabletop circular saw according to claim 2 is a lock means.
Blocking means when the circular saw body is locked at the top dead center by
Lock-off button is in the blocking position,
Therefore, the operation of the trigger as the operation means is prevented, and
In other words, the starting of the motor is prevented.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Further, in the desk circular saw of claim 3, the lever is provided with a lever.
By gripping and moving the grip, the handle
Lock off button can be operated.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

Opening 1 provided at the center of mounting plate 19
A cap 22 has a substantially fan-shaped safety cover 18 that covers a portion of the circular saw blade 12 exposed from the blade case 13 from the outside of the blade case 13. 24. A spiral spring 25 having one end secured to the mounting plate 19 and the other end secured to the safety cover 18.
The biased into 2 in the counterclockwise direction (recovery pivoting direction), the portion of the circular saw blade 12 exposed from the blade case 13 in which normally covers.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

On the back surface of the cap 22, the cap 22
A control abutting plate 27, which is in contact with one end of an operation link 26 for controlling the rotation of the actuator, is protrudingly provided.
Alternatively, as shown in FIG. 2, the other end is tiltably connected to an upper end of a bracket 28 erected below the fixed arm 3 via a support pin 29. An arc-shaped control slot 30 is formed at the center of the operation link 26 in the longitudinal direction of the operation link 26, and a roller pin 31 attached to the blade case 13 is fitted into the control slot 30. doing. The radius of curvature of the circular arc portion on one side of the control elongated hole 30 is set smaller than that of the circular arc portion on the other side. The operating link 26 is tilted by the control of the roller pin 31 fitted in the control elongated hole 30 with the downward tilting of the circular saw machine body 4, and is brought into contact with the control abutment plate 27 of the cap 22. One end of the safety cover 18 together with the cap 22 is pressed against the urging force of the spring 25 as shown in FIG.
Rotates clockwise Te odor, is to expose the circular saw blade 12.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

As shown in FIG. 5A, the front and rear side plates 14a of the connecting portion 14 of the circular saw machine body 4 facing each other,
Insertion holes 38 and 39 for the lock pin 36 are formed in 14b, and the lock pin 36 is held between the side plates 14a and 14b with one end and the other end inserted into the insertion holes 38 and 39, respectively. Locking pin 36 is substantially than the diameter of the insertion hole 38, 39 in an intermediate portion provided with a collar 40 of larger diameter, the distance between the ends of the collar 40 and the side plate 14 b side of the lock pin 36 side plate 14a, between 14b slightly longer than the distance, as shown in Figure 5B, the side plate 14 b side of the end portion insertion hole 3 while the collar 40 is in contact with the side plate 14 a of the rear side
9 so as to be in a non-projecting state to the outside.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019] The above is the other end of the lock pin 36 lock-flops
A small-diameter neck portion 36a that fits into the long hole portion 37b of the groove 37 of the rate 35 is formed, and a head portion 36b at the tip is locked to the outer surface of the lock plate 35 so as to be connected to the lock plate 35. The circular portion 37a of the groove 37 has a larger diameter than the head 36b at the tip of the lock pin 36, and serves as an insertion hole for the head 36b when the lock pin 36 is attached to the lock plate 35. .

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

Here, when the lock pin 36 of FIG. 5A is engaged with the lower part of the control slot 30 of the operation link 26, the lever 34 is located at a position separated from the lock-off button 43. As shown in FIG. 6A, the stopper plate 43c is locked to the groove 15a to be kept in the protruding position with respect to the operation handle 15, and the lever 34 is used to release the lock pin 36 from the control slot 30 of the operation link 26. When you move to the state of 5B,
The head 43 b of the lock-off button 43 as shown in FIG. 6B
It is but lock-off button 43 is pushed by the lever 34 is pushed in against by operating handle 15 to the spring 44, is set to the head 43 b reaches in contact with depressed position on the outer surface of the operating handle 15 .

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

Next, the lever 34 is moved to the compression coil spring 4
5 moves out of the blade case 13 against FIG.
As shown in FIG. 6B, the lock pin 36 is disengaged from the control slot 30 of the operating link 26, and at the same time, the stopper 41 of the lever 34 is moved to the end 1 of the safety cover 18 as shown in FIG.
2a, the circular saw machine body 4 is tilted downward by gripping the operation handle 15 and the safety cover 18 is rotated in the direction in which the circular saw blade 12 is exposed (see FIG. 2). (Rotation in the same direction as the arrow A). Further, the lever 34 is moved to the retracted position shown in Figure 6B The filtrate <br/> Kkuofubotan 43 abuts the head 43 b of the lock off button 43 by the anti-spring 44, thereby receiving the stopper plate 43c Trigger 16 with fitting in groove 16a
Of the motor 6 can be activated by pushing the.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

[0032]

The tabletop circular saw according to the first aspect of the present invention.
The lock at the top dead center position of the circular saw
Motor start in position, that is, the circular saw body is cut
Prevents the motor from starting when it is not tilted downward
it can.

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

The tabletop circular saw machine according to claim 2 operates the trigger.
The operation of the motor can be prevented by mechanically preventing operation.
You.

[Procedure amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

Further, in the tabletop circular saw machine according to claim 3, the lever is provided with a lever.
By gripping and moving the gripping part, the top of the circular saw machine dies
Release the point lock and release the motor start prevention at the same time.
I can.

[Procedure amendment 18]

[Document name to be amended] Statement

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

Is a rear view of FIG. 1;

[Procedure amendment 19]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

[Procedure amendment 20]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

Claims (4)

[Claims] 1. A circular saw machine, comprising: a base; a circular saw main body attached to the base so as to be vertically tiltable; the circular saw main body partially includes a motor for driving a circular saw blade to rotate; A cover case for covering the circular saw blade exposed from the blade case, a safety cover movable to an exposed position for exposing the circular saw blade, and a tiltably attached to the base, An actuation link that operatively links the base and the safety cover so that the safety cover can move from the cover position to the exposure position with a downward tilt from the top dead center position of the circular saw body; A table circular saw machine, wherein a lever capable of restricting movement of the safety cover to the exposed position at the cover position is attached to the circular saw machine body. 2. The tabletop circle according to claim 1, wherein the circular sawing machine main body is provided with a lock pin capable of locking the operation link when the circular sawing machine main body is located at the top dead center position. Sawing machine. 3. The operation link has a control elongated hole that fits into a pin provided on the circular sawing machine main body, and the lock pin is provided when the circular sawing machine main body is located at the top dead center position. The operating link is arranged so as to be fittable in the control slot, and is always urged by a spring toward a fitting position with respect to the control slot, and is linked to the lever. 3. The tabletop circular saw machine according to claim 2, wherein the tabletop circular sawing machine is movable from a fitting position to a disengaging position with respect to. 4. The tabletop circular saw machine according to claim 1, wherein the lever is capable of operating a lock-off switch for locking a trigger for starting and stopping the motor at a motor stop position.