JPH0637229B2 - Rechargeable electric cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rechargeable electric gear cutting machine.

(B) Conventional Technology As a conventional electric power cut-off machine, for example, a commercial power source type that is used by connecting to a commercial power source at the time of use, such as Japanese Patent Publication No. 52-11635, is widely used. This type of electric cutting machine has the drawback that it cannot be used unless an outlet is located near the place of use.

To address this drawback, rechargeable electric gear cutting machines have been commercialized and sold. This conventional rechargeable electric cutting machine is a so-called stand type, and the charger and the main body of the cutting machine are separate bodies, and the main body of the cutting machine is connected to the charger for charging. However, at the time of cutting off, the main body of the cutting machine can be removed from the charger and the cutting operation can be performed at any place of use, and the above-mentioned drawbacks of the commercial power supply type can be solved.

However, the main body of the above-mentioned gear cutting machine has a large reduction gear mechanism and a large lever for moving the cutting teeth up and down, so it is large and heavy, and an electric gear cutting machine equipped with a charging plug by equipping this with a charging mechanism. If it is constructed, there is a problem that it becomes larger and heavier.

In addition, when forming a cutting machine equipped with a charging plug, depending on the arrangement of the charging plug, motor, and reduction gear mechanism, the thickness of the cutting machine becomes thicker, and an excessive rotational moment is applied to the charging plug, causing There is a problem such as damage to the power supply, and the main body of the power cut-off machine easily falling off from the outlet during charging.

(C) Problems to be Solved by the Invention In view of the above-mentioned various problems, the present invention provides a lightweight, thin, compact rechargeable electric gear cutting machine in which an excessive rotational moment is not applied to a charging plug. It is something to do.

(D) Means for Solving the Problems The present invention is directed to a deceleration connected to a motor and a drive shaft in a mechanism part of a main body case that is composed of a mechanism part and a U-shaped grip part connected to the mechanism part. The gear mechanism is housed, and the drive wheel that is connected to the output end of the reduction gear mechanism and rotates on the front surface side of the mechanism mechanism is provided above the drive wheel so as to be movable up and down. In a rechargeable electric cutting machine having a cutting blade for forming a worm gear on a drive shaft of the motor, the motor is laterally installed in a lower portion of the mechanism portion, and the reduction gear mechanism is disposed above the motor. A charging plug is provided at the side of the motor and the reduction gear mechanism on the back surface of the portion so that the charging plug can be retracted and retracted, and at least a printed circuit board is housed in the upper side of the handle and at least a rechargeable battery is housed in the lower side of the handle. On the upper or lower side of the A transformer is housed, a first operation button for opening and closing an operation control contact provided on the printed circuit board and a second operation button for moving up and down are provided on the upper surface of the main body case, and further above the reduction gear mechanism of the mechanism section. In addition, a cutting blade operating mechanism for moving the cutting blade up and down in synchronization with the vertical movement of the second operation button is housed.

(E) Action Since the worm gear is used by the above means, the reduction gear mechanism can be made smaller and lighter, and the cutting blade can be moved up and down by the second operating means and the cutting blade operating mechanism. Is unnecessary, the size and weight of the machine are reduced, and the charging plug, the motor, and the reduction gear mechanism are not arranged in the thickness direction of the mechanical section of the main body of the gear cutting machine. No rotation moment is applied.

(F) Embodiment One embodiment of the present invention will be described below with reference to the drawings. The cutting machine shown in the figure is a handy rechargeable cutting machine, and the main body case
The drive wheel (can feed tooth) (1) is mounted on the front surface of the (K) so as to be rotatable, and the cutting blade (3) is provided above the drive wheel on the front surface so as to be vertically movable to rotate the can. It is something that opens while letting you go. The cutting machine is mainly composed of a drive wheel drive mechanism (A) for rotationally driving the drive wheel (1) and a cutting blade operating mechanism (B), and the drive wheel mechanism (A) is driven by a motor (5). It includes a mechanical component (A ₁ ) for driving the wheel (1) at a low speed and an electrical component (A ₂ ) for electrically controlling the motor.

[1] Body case The body case (K) is made of synthetic resin and has screws (6) (7)
(8) Formed in a flat shape (left-right width L ₁ >> front-back width L ₂ ) from the front case (K ₁ ) and the rear case (K ₂ ) that are detachably connected by (9) And a substantially U-shaped handle portion (12) connected to the mechanism portion (10) so as to have a mechanism portion (10) mainly containing the mechanical component (A ₁ ) and a rectangular handle window (11).
Consists of. The front case (K ₁ ) is divided into a first part (K ₁₁ ) corresponding to the mechanical part (10) and a second part (K ₁₂ ) other than the first part (K ₁₁ ), and both parts (K ₁₁ ) (K ₁₂ ). ) The protrusion and the groove are engaged with each other at the joint portion, and the second portion (K ₁₂ ) to the first portion (K ₁₁ )
The tongue piece (13) projecting so as to overlap with the first portion (K ₁₁ ) is polymerized and fixed by a screw (not shown).

[2] Drive Wheel Drive Mechanism-Mechanical Components (A ₁ ) Next, the drive wheel drive mechanism (A) will be described. The machine component (A ₁ ) is mainly composed of a DC motor (5) and a reduction gear mechanism (14). The drive shaft (15) of the motor (5) projects toward the top (right end in FIG. 1) in the lower part of the mechanism (10), and the electric terminals (16) and (16) end (left end in FIG. 1). ) Side, is perpendicular to the thickness direction of the mechanism part (10) (direction parallel to the paper surface of FIG. 1), and is installed horizontally toward the horizontal direction, and integrally with the first part (K ₁₁ ). Partition walls to be erected (17) (1
The drive shaft (15) is attached to 8) so as to penetrate the partition wall (17),
With a screw (not shown) that penetrates the partition wall (17), the partition wall (1
It is stuck to 7).

The reduction gear mechanism (14) is arranged above the motor (5) in the mechanism section (10) and is mounted on the drive wheel (1) rotatably provided so as to project from the front surface of the main body case (K) and to rotate the motor drive shaft (15). ) Decelerating the rotation of the gear, the metal worm gear (21) fixed to the drive shaft (15) and the large diameter synthetic resin gear (22) meshing with it.
And a small-diameter gear (23) located in front of the first part (K
₁₁ ), a first gear (G ₁ ) rotatably supported by a metal shaft (24) protruding inwardly, and a small-diameter gear of the first gear (G ₁ ).
A metal shaft having a large diameter synthetic resin gear (25) meshing with (23) and a small diameter metal gear (26) located behind the synthetic resin gear and protruding inward from the first portion (K ₁₁ ). 27) A bearing that is rotatably supported by the second gear (G ₂ ) and a small-diameter gear (26) of the second gear (G ₂ ) that meshes with the first portion (K ₁₁ ) It comprises a third gear (G ₃ ) fixed to the rear end of a metal shaft (29) rotatably supported by the cylinder (28). A screw groove (31) is formed at the front end of the shaft (29), that is, a portion protruding from the front case (K ₁ ), and the drive wheel (1) is detachably screwed to this portion.
The direction of the screw groove (31) is the rotation direction (X) of the shaft (29) and the drive wheel.
It is formed so that the screwing direction of (1) is opposite. The axis
The rear end of (24) (27) (29) is a metal support plate (34) fixed by a screw (not shown) screwed into the boss (32) (33) of the front case (K ₁ ). It is supported.

The gear ratio of the above reduction gear mechanism (14) is set to 268: 1, for example, and the gear ratio of the worm gear (21) and the first gear (G ₁ ) is 33: 1, which is large with a small gear. The following reduction ratio is obtained.

[3] drive wheel drive mechanism - electrical components (A ₂₎ electric components of the drive wheel drive mechanism (A) (A ₂₎ is as shown in Figure 15, the AC utility power outlet for plugging into (not shown) Charging plug (35), step-down transformer (T) connected to this, three secondary (rechargeable) consisting of Ni-Cd battery connected to the secondary side of this transformer through rectifier diode (D ₁ ). Battery (b ₁ ) (b ₂ ) (b ₃ ), operation control switch (S) installed in the energizing circuit of the motor (5), reverse current blocking diode connected in series to the secondary side of the transformer (T) (D ₃ ), a light emitting diode (LED) and a resistor (R) that light up when charging, a diode (D ₂ ) that is connected to light up the light emitting diode (LED) during operation
Consists of.

Referring to FIG. 3, the charging plug (35) has pivot shafts (3
5a) (35a) projecting base part (35b) made of synthetic resin and two plug blades (35c) (35c) insert-molded into this, and the motor (5) of the rear case (K ₂ ) ) Is mounted on the upper side of the gear mechanism (14) and near the handle window (11) close to the left side (FIG. 1) of the gear mechanism (14) so as to be retractable by rotation. Specifically, a plug accommodating recess (37) is formed in the protruding portion (36) that partially protrudes according to the thickness of the motor (5) of the rear case (K ₂ ), and this recess (37 ) Inside the rear case (K ₂ ) from the inside of the rear case (K ₂ ) to the recess (37) in the bearing groove (38) (38) shaft (35a)
It is stored so that (35a) is in a fitted state. Then, the plug (15) is immersed in the recess (37) and is flush with the protrusion (36) (see FIG. 3), and the plug blades (35c) (35c) are recessed (3).
It is configured so as to be rotatable between 7) and a protruding state (see FIG. 4) in which the rear case (K ₂ ) is vertically projected. On the other hand, the second part (K ₁₂ ) of the front case (K ₁ )
The terminal block (41) (41) with the fixed contact plates (39) (39) attached to the rear case (K ₂ ) is integrally projected to face the plug (15), and the charging plug ( 15) is stored in the recess (37) and the front case (K ₁ )
When the rear case (K ₂ ) and the rear case (K ₂ ) are joined, the pivot shafts (35a) (35a) are fitted into the bearing recesses (42) (42) provided in the terminal blocks (41) (41). (43) is a T-shaped leaf spring installed between the terminal blocks (41) (41) and the support plate (34), and the base (43a) is provided in the recess between the terminal blocks (41) (41). The terminal block (41) (41) wall and the protrusion (34a) by fitting and fitting the support plate (34) with the protrusion (34a) rearward.
Position the left and right with and connect the base (43a) to the terminal block (41) (4
Place it on the step ribs (44) (44) provided in 1), and place it on the horizontal part (43b).
Place the charging plug (3) on the support plate (34) (see Fig. 1).
The protruding / withdrawing state caused by the rotation of 5) is retained by elastic deformation of the protrusion (not shown) provided on the base (35b). Charging plug (15) plug blade (3
5c) (35c) When protruding, plug blade (35c) (35c) base (35b)
The more protruding rear end is elastically contacted with the contact plates (39) (39), the plug blades (35c) (35c) and the contact plates (39) (39) are held in an electrically connected state, and the plug blade (35c ) (35c) When immersed, this electrical connection is released.

The transformer (T) is positioned and arranged by the ribs (45) ... at a position close to the motor (5) in the lower storage space (12A) of the handle portion (12). Since this position is close to the charging plug (35), the high voltage wiring can be short. Two of the secondary batteries (b ₂ )
(b ₃ ) is a rib (46) on the rear side of the transformer (T) on the lower side (12A) ...
And the rising wall (47) of the case (K ₁ ) are positioned and arranged, and the remaining one (b ₁ ) is a rib at the rear end of the upper side (12B) of the handle (12). ... and the rising wall (47) of the front case (K ₁ ) are positioned and arranged. The former two (b ₂ ) and (b ₃ ) are in direct contact, the other one (b ₁ ) is electrically connected using the contact plate (49), and the three are connected in series. .

The operation control switch (S) is a rib (51) of the front case (K ₁ ) ...
The fixed contact plate (54) and the movable contact plate (55) attached to the printed circuit board (53) inserted between the movable contact plate and the rib (52).
It is mainly composed of a first push button (first operating means) (56) for pressing 5). The first push button (56) is shown in FIG.
Half round groove (57a) and the rear case of forming the standing wall (47) of ₁₎ (K ₂₎
A hole composed of a semi-circular groove (57b) formed in the rising wall (58) of
A cylindrical part (56a) which can be inserted into (57) and a first part which is integrally connected to the lower end of the cylindrical part (56a) so as to face the pressing part (55a) of the movable contact plate (55). Cylindrical part (56a) similar to the operating part (56b)
A second operating portion (56) which is continuously provided on the opposite side to the first operating portion (56b) at the lower end and is formed by obliquely notching the upper surface of the tip side corner portion to form an inclined surface (50).
It consists of c). The tubular portion (56a) engages with the peripheral edge (58) of the hole (57) at one end and forms a stepped portion (59) for keeping the movable contact plate (55) in contact with the fixed contact plate (54). is doing.

Various measures have been taken to facilitate the engagement of the stepped portion (59). First cylindrical portion (56a) a pair of which is formed on the front side and the rear side and each front case (K ₁₎ and rear case (K ₂₎ of the lower guide rib (61) (61) (the rear case side is not shown) Guide grooves (62) and (62) (front side not shown) are formed. The guide ribs (61) (61) are extended in the vertical direction, but the upper part (61a) and the lower part (61b) are laterally displaced, that is, the lower part (61b) is the leading part with respect to the upper part (61a). It is formed so as to deviate toward the (right end in FIG. 1) side. This guide rib (6
1) When the push button (56) is pushed due to the eccentric configuration of (61), the push button (56) is displaced to the front side. Next, a coil spring (63d) is formed between the cylindrical spring receiver (56d) formed inside the cylindrical portion (56a) (see FIG. ₁ ) and the disc-shaped spring receiver (63) formed integrally with the front case (K ₁ ). 64) is installed, and the disc-shaped spring receiver is attached to the center of the cylindrical spring receiver (56d).
By displacing the center of (63) toward the beginning, the coil spring
The lower part is offset from the upper part of (64) (see Fig. 1)
Therefore, the push button (56) receives the force of moving in the front direction by the original shape restoring force of the coil spring (64).

Further, the pressing portion (55a) of the movable contact plate (55) is bent downward to form a mountain shape, and the pressing portion (55a) is pressed by the pressing protrusion (65) of the first operating portion (56b). With this structure, when the push button (56) is pressed, the elastic force of the movable contact plate (55) urges the pressing portion (55a) in the leading direction. Further, the rear side of the upper surface of the tubular portion (56a) is formed as a low step portion (65) and an inclined surface (67) is formed between the tubular portion (56a) and the high step portion (66). With this structure, press the thumb with the push button (56).
Pushing the top surface tends to generate force in the front direction.

The diodes (D ₁ ) (D ₂ ) (D ₃ ) and the resistor (R) are attached to the lower surface side of the printed circuit board (53), and the light emitting diode (LED) extends the front side of the printed circuit board (53). Further, the tip end is exposed to the upper surface from the window (68) formed on the upper surface of the first portion (K ₁₁ ) and provided upright on the front surface side of the third gear (G ₃ ).

[4] Cutting Blade Operating Mechanism (B) Next, the structure of the cutting blade operating mechanism (B) will be described. This mechanism (B) is attached to the upper part of the first part (K ₁₁ ) of the body case (K). Referring to FIG. 5, (71) has a rotary shaft (73) which is rotatably supported in a shaft hole (72) formed in the first portion (K ₁₁ ) and is provided in the main body case (K). A metal blade support plate that is rotatably attached, and the cutting blade (3) is detachably fixed to the tip of the rotating shaft (73), and the cutting blade (3) is a fulcrum (74), that is, the rotating shaft (73). It is freely rotatable around its central axis. The tip fixing portion (73a) of the rotating shaft (73) is smaller in diameter than other portions and is formed in a square shape (as long as it is non-circular), and the fixing portion (73a) is provided with a synthetic resin lever (75). Cutting edge after being press-fitted in the hole (76)
(3) is a screw hole formed in the fixing portion (73a) by being fitted into the fixing portion (73a) by being fitted into the fixing portion (73a) by the square hole (77).
It is fixed to the fixing portion (73a) by a screw (79) screwed to the (78).

The lever (75) is press-fitted to attach the support plate (71) to the main case.
It has a function of holding it so that it will not easily come off from (K) and a function of a spacer that keeps the distance of the cutting blade (3) from the front of the main body case (K) constant, and The handle piece (75a) is integrally formed in the front part of the edge, and it also functions as a blade-raising lever that rotates the lever (75) upward by placing a finger on the handle piece (75a). Has been done. In addition, the claw piece (7
The rear end of 5a) comes into contact with the upper surface of the arm support base (90) described later to regulate the rotation of the cutting blade (3) in the pulling down direction.

The cutting blade (3) has a substantially rectangular shape as shown in FIG. 14, and has a fulcrum (74) between the lower end of the side edge (3A) on the leading side and the lower end of the side edge (3B) on the rear side (right side in the figure). ) Is formed as a center, and an arcuate cutting edge (3C) is formed, and a lower end corner portion on the leading side (corner side corner portion) is cut out to form an acute bite edge (3D). The support plate
(71) has one end locked inside the main body case (K) and the other end supporting plate
A coil spring (82) locked to the protrusion (71d) formed on (71) urges the coil spring in the P direction of FIG. 5, that is, in the blade lowering direction.

(83) is a synthetic resin second push button (second operation means) provided on the upper surface of the body case (K) on the top side of the first push button (56) with reference to FIGS. 6 and 13. ), A tubular part (83a) that slides up and down in a button hole (84) formed on the upper surface of the main body case (K) and a blade operating first operating part (83b) integrally formed at the lower end of the tubular part (83a) A spring receiver (85) formed on the main body case (K) and a spring receiver (83
d) (see FIG. 1) is constantly urged upward by a coil spring (86) provided between the coil spring and the coil spring. The second operating portion (83
c) is the first push button (56) locked in the operating state (see FIG. 8)
The slope located above the slope (50) of the second operating portion (56c) of the
(87) is formed, and the second push button (83) is pushed, so that the first push button (56)
Is moved in the rear direction, and the engagement of the push button (56) is released.
The slopes (50) (87) may have either one. (89)
(89) is a pair of guide ribs formed on the front case (K ₁ ) and the rear case (K ₂ ) (the rear case side is not shown), and the tubular portion (83a)
It is fitted in a pair of grooves (91) (91) (front side not shown) formed in front of and behind, and guides the tubular portion (83a) up and down. (92)
Is a synthetic resin actuating lever rotatably supported by a shaft (93) projecting in the main body case (K). The second push button (83) is provided in the middle part.
A first engaging portion (92a) protruding so as to abut and engage with the operating portion (83b) when is pressed, and a protruding portion on the support plate (71) at the tip when the operating lever (92) rotates. It has the 2nd engaging part (92b) which abuts and engages with the pin (71a). This actuating lever (92) is integrally formed with an actuating arm (92c) that is easily elastically deformed in the middle upper part,
At the tip of the blade support plate (7
The pin-shaped engaging portion (9) that engages with the engaging groove portion (71b) formed in (1)
4) is formed, and the operating arm (92c) with respect to the shaft (93)
The release arm (92d) on the opposite side to the second operation part of the first push button (56)
It is formed so as to face the (56c), and when the first push button (56) descends, the second operating portion (56c) pushes the release arm portion (92d) and the above-mentioned engaging groove portion (71b) and engaging portion ( 94) Release the engagement with.

Reference numeral (95) is a U-shaped leaf spring mounted on the main body case (K), and when the cutting blade (3) is in the lowered state, the protrusion (71) of the blade support plate (71) is
The blade support plate (71) is slightly urged in the blade pulling direction by abutting against the c), and even when the cutting blade (3) is difficult to catch due to a dead battery etc., the blade support plate (71) is pulled up to the support plate (71). A force is exerted on the cutting blade (3) to facilitate the lifting of the cutting blade (3).

(96) is a can support provided on the front surface of the main body case (K).
Is appropriately separated from the case (K). Reference numeral (97) is a canister holding shaft, and reference numeral (98) is a magnet for attracting a can lid attached to an arm (99) which is rotatable in a horizontal direction.

In the above-mentioned component arrangement, the mounting position of the charging plug (35) is close to the heavy motor (5) and the reduction gear mechanism (14), and the motor (5) and the reduction gear are centered around the charging plug (35). generally opposite the mechanism (14), by taking the weight balance between the left and right which like follows a heavy transformer (T) and a secondary battery (b ₁₎ are arranged - a (b ₃₎ The center of gravity (O) of the device is at the position shown in FIG. 3 and is close to the charging plug (35). As a result, when the charging plug (35) is plugged into a power outlet for charging, an excessive rotational moment is not applied to the charging plug, and the charging plug (3
5) It is possible to prevent damage to the part.

In addition, the charging plug (35), the motor (5), and the reduction gear mechanism (14) are arranged laterally (including the top and bottom, left and right) of each other without overlapping in the thickness direction of the mechanism section (10). Since it is installed, it is possible to make the mechanism section (10) thinner, and by making the center of gravity of the cutting machine in the thickness direction of the mechanism section (10) close to the charging plug (35), the charging plug (35) Does not apply an excessive rotational moment to the other direction.

The operation of the above configuration will be described. Cutting blade in the initial state
Assuming that (3) is in the pulled-up state (see the alternate long and short dash line in FIG. 6), in order to perform the cutting operation, hold the can (N) with your left hand and hold its edge (winding part) with the drive wheel ( 1) Place it on top, and contact the side surface with the support base (96). Then, when the first push button (56) is pressed, the operating lever (92) is rotated to release the engagement between the blade support plate (71) and the operating lever (92), and the cutting blade (3) is lowered, The edge (3D) comes into contact with the lid (N ₁ ) (see FIG. 7). Further, when the first push button (56) is pushed, the contacts (54) (55) come into contact and the operation control switch (S) is turned on.
It is held by the engagement of (59) (see FIG. 8). When the operation control switch (S) is turned on, the drive wheel (1) starts to rotate, the can (N) rotates, and the cutting edge (3) automatically moves from the edge (3D) to the lid (N ₁ ) easily. The bite lid (N ₁ ) is cut. When the second push button (83) is pushed halfway after the lid (N ₁ ) has been cut off, the second actuating portion (83c) comes into contact with the second actuating portion (56c) of the first push button (56) and the first push button (83). (56)
Is released from its engagement and returns to the upper position, and the operation control switch
(S) turns off and the motor (5) stops (see FIG. 6).
Next, hold the can (N) with your left hand and push the second push button (83) all the way to rotate the operating lever (92).
The blade support plate (71) rotates to pull up the cutting blade (3), and the pulled-up state is held by the engagement between the engaging portion (94) and the engaging groove portion (71b), and the initial state is restored. . The can (N) can be removed in this state.

If the secondary battery is discharged during the above cut-off operation,
Although the cutting blade bites in as shown in Fig. 14, the cutting edge (3) has a circular arc shape centered on the fulcrum (74), so when the push button (83) is pressed, the cutting edge (N ₁ The cutting blade (3) can be easily pulled up without being caught on the incision edge (100) of (1). If it is difficult to pull up with the push button (83), the lever (75) can be held by hand.

The present invention is not limited to the above embodiment, the transformer (T) may be provided on the upper side portion (12A) of the handle portion (12), and the battery may be provided on the lower side portion (12B) instead. . Also, blade support plate
(71) is engaged with the operating lever (92) to hold the blade raised state. However, this engaging mechanism is deleted and the cutting blade (3) is pressed only when the second push button (83) is pressed. ) May be raised. In this case, the release arm (92
Also delete a). The operation control switch (S) may be replaced with a seesaw type switch or the like.

(G) Effect According to the present invention configured as described above, it is possible to reduce the weight of the reduction gear mechanism and the blade up / down movement lever by eliminating or reducing the weight of the blade, and to arrange the charging plug, the motor, and the reduction gear mechanism. By devising it, it can be made thinner, and by properly disposing the printed circuit board, transformer, and secondary battery in the extra space of the handle part, the body can be made smaller, and the overall weight is light and thin. We can provide a cutting machine. In addition, the effect that the excessive rotational moment is not applied to the charging plug is great.

[Brief description of drawings]

1 to 15 show an embodiment of the present invention. FIG. 1 is a rear view of a partial cross section with a rear case removed, FIG. 2 is an overall front view, and FIG. 3 is an overall view. Rear view, FIG. 4 is an overall top view, FIG. 5 is a sectional view taken along line VV of FIG. 1, and FIG.
FIGS. 8 to 9 are explanatory views showing different operating states, FIG.
Figures 10 and 10 are explanatory views showing different operating states,
FIG. 11 is an exploded perspective view of essential parts, FIGS. 12 and 13 are perspective views of parts, FIG. 14 is an explanatory view of a chopping operation, and FIG. 15 is an electric circuit diagram. (1) …… Drive wheel, (3) …… Cutting blade, (5) …… Motor, (10)
...... Mechanism part, (12) …… Handle part, (14) …… Reduction gear mechanism,
(21) …… Worm gear, (35) …… Charging plug, (53) ……
Printed circuit board, (54) (55) ... contacts, (56) ... first push button (first operating means), (83) ... second push button (second operating means), (K) ... main body case , (B ₁ )-(b ₃ ) …… Secondary battery,
(T) …… Trance.

Claims (1)

[Claims] Claim: What is claimed is: 1. A motor and a reduction gear mechanism connected to the drive shaft are housed in a mechanism portion of a main body case which is composed of the mechanism portion and a U-shaped grip portion connected to the mechanism portion. A rechargeable electric motor equipped with a driving wheel that is connected to the output end of the reduction gear mechanism and rotates on the front side of the driving wheel, and a cutting blade that is vertically movable above the driving wheel and that cooperates with the driving wheel to cut the can lid. In the gear cutting machine, a worm gear is formed on a drive shaft of the motor, and the motor is laterally provided in a lower portion inside the mechanism portion. The reduction gear mechanism is disposed above the motor. The motor and the reduction gear mechanism on the back surface of the mechanism portion. A charging plug is provided on the side of the handle so that it can be retracted and retracted, at least a printed circuit board is housed in the upper side of the handle, and at least a rechargeable battery is housed in the lower side of the handle. The main body A first operation button for opening and closing the operation control contact provided on the printed circuit board and a second operation button for moving up and down are provided on the upper surface of the base, and the second operation button is provided above the reduction gear mechanism of the mechanism section. A rechargeable electric cutting machine that houses a cutting blade operating mechanism that moves the cutting blade up and down in conjunction with the vertical movement of the cutting blade.