WO2024090294A1

WO2024090294A1 - Reciprocating saw

Info

Publication number: WO2024090294A1
Application number: PCT/JP2023/037577
Authority: WO
Inventors: 智大鵜飼; 勇太山下
Original assignee: 株式会社マキタ
Priority date: 2022-10-25
Filing date: 2023-10-17
Publication date: 2024-05-02

Abstract

This reciprocating saw comprises: a motor; a reciprocating motion conversion mechanism which is disposed in front of the motor and which causes a blade to reciprocate on the basis of a rotational force of the motor; a battery mounting portion to which a battery is mounted; and a vise mounting portion which is disposed in front of the motor and which has a vise mounted thereto.

Description

Reciprocating Saw

The technology disclosed in this specification relates to a reciprocating saw.

In the technical field related to reciprocating saws, a saber saw to which a chain vice is attached is known, as disclosed in Patent Document 1.

Japanese Utility Model Application Publication No. 3-62722

When using an AC power source to power a reciprocating saw, a cord is required to connect the reciprocating saw to the wiring socket (a so-called outlet). Also, depending on the work site, it may be difficult to secure AC power. Also, when working with a reciprocating saw in a location far from the wiring socket, the cord must be long. If the cord is long, a voltage drop may occur, reducing work efficiency or making it impossible to work.

The technology disclosed in this specification aims to prevent any deterioration in the workability of a reciprocating saw to which a vise is attached.

This specification discloses a reciprocating saw. The reciprocating saw may include a motor, a reciprocating motion conversion mechanism that is disposed forward of the motor and that reciprocates the blade based on the rotational force of the motor, a battery mounting section to which a battery pack is attached, and a vice mounting section that is disposed forward of the motor and to which a vice is attached.

The technology disclosed in this specification prevents any decrease in the workability of the reciprocating saw to which the vise is attached.

FIG. 1 is a front perspective view showing a reciprocating saw according to a first embodiment. FIG. 2 is a rear perspective view showing the reciprocating saw according to the first embodiment. FIG. 3 is a view of the reciprocating saw according to the first embodiment as viewed from above. FIG. 4 is a view of the reciprocating saw according to the first embodiment as viewed from the right side. FIG. 5 is a cross-sectional view showing the reciprocating saw according to the first embodiment. FIG. 6 is an exploded view showing the reciprocating saw according to the first embodiment. FIG. 7 is a diagram showing the inside of the reciprocating saw according to the first embodiment. FIG. 8 is a diagram showing the inside of a reciprocating saw according to a modified example of the first embodiment. FIG. 9 is a diagram showing the inside of a reciprocating saw according to a modified example of the first embodiment. FIG. 10 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 11 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 12 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 13 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 14 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 15 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 16 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 17 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 18 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 19 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 20 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 21 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 22 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 23 is a diagram for explaining a modified example of the mounting method of the battery pack according to the first embodiment. FIG. 24 is a front perspective view showing the reciprocating saw according to the second embodiment. FIG. 25 is a rear perspective view showing the reciprocating saw according to the second embodiment. FIG. 26 is a view of the reciprocating saw according to the second embodiment as viewed from above. FIG. 27 is a view of the reciprocating saw according to the second embodiment as viewed from the right side. FIG. 28 is an exploded view showing a reciprocating saw according to the second embodiment. FIG. 29 is a diagram showing the inside of a reciprocating saw according to the second embodiment. FIG. 30 is a diagram showing the inside of a reciprocating saw according to a modified example of the second embodiment. FIG. 31 is a diagram showing the inside of a reciprocating saw according to a modified example of the second embodiment. FIG. 32 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 33 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 34 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 35 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 36 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 37 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 38 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 39 is a diagram for explaining a modified example of the mounting method of the battery pack according to the second embodiment. FIG. 40 is a view of the reciprocating saw according to the third embodiment as viewed from the right side. FIG. 41 is a cross-sectional view showing a reciprocating saw according to the third embodiment. FIG. 42 is a view of the rear part of the reciprocating saw according to the third embodiment, seen from the right side. FIG. 43 is an exploded perspective view from the rear showing the rear part of the reciprocating saw according to the third embodiment. FIG. 44 is a view of the reciprocating saw according to the fourth embodiment as seen from the right side. FIG. 45 is a cross-sectional view showing a reciprocating saw according to the fourth embodiment. FIG. 46 is a view of the reciprocating saw according to the fifth embodiment as viewed from the right side. FIG. 47 is a cross-sectional view showing a reciprocating saw according to the fifth embodiment.

In one or more embodiments, the reciprocating saw may include a motor, a reciprocating motion conversion mechanism that is disposed forward of the motor and that reciprocates the blade based on the rotational force of the motor, a battery mounting section to which a battery pack is attached, and a vice mounting section that is disposed forward of the motor and to which a vice is attached.

In the above configuration, a battery pack, which is a DC power source, is used as the power source for the reciprocating saw, eliminating the need to connect a cord to the reciprocating saw. This prevents a decrease in the workability of the reciprocating saw to which the vice is attached. In addition, because the power source for the reciprocating saw is a battery pack, there is no need to secure an AC power source at the work site. This allows the worker to carry out work using the reciprocating saw without being restricted by the work environment.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor and the battery attachment portion may each be disposed forward of the grip portion.

In the above configuration, the battery pack, which is a heavy object, is positioned forward of the grip section, which reduces the load on the worker when performing cutting work using a vice.

In one or more embodiments, the battery mounting portion may be located rearward of the motor.

The above configuration improves the weight balance of the reciprocating saw, reducing the load on the operator when cutting using a vice.

In one or more embodiments, the battery mounting portion may be located below the motor.

In one or more embodiments, the vice may be attached to the vice mounting portion by being inserted from one side of the vice mounting portion to the other in the left-right direction, and the battery pack may be attached to the battery mounting portion by being inserted from one side of the battery mounting portion to the other in the left-right direction.

In the above configuration, for example, when the vice is attached to the vice attachment section by being inserted from the left side toward the right, and the battery pack is attached to the battery attachment section by being inserted from the left side toward the right, the vice is positioned on the left side of the reciprocating saw, and the battery pack protrudes from the left side of the reciprocating saw. This prevents a decrease in workability during cutting work using a vice.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor may be disposed forward of the grip portion, and the battery attachment portion may be disposed rearward of the grip portion.

In the above configuration, the battery pack, which is a heavy object, is positioned behind the grip, improving the weight balance of the reciprocating saw.

In one or more embodiments, the battery attachment portion may be located at the rear end of the grip portion.

The above configuration improves the weight balance of the reciprocating saw.

In one or more embodiments, the battery pack may be attached to the battery mounting portion by being inserted from one side of the battery mounting portion to the other.

With the above configuration, the worker can smoothly attach and detach the battery pack to and from the battery attachment section.

In one or more embodiments, the battery pack may be attached to the battery mounting portion by being inserted downward from the top of the battery mounting portion.

In one or more embodiments, the reciprocating saw may include a controller that controls the motor. The controller may be located rearward of the motor.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor, the battery mounting portion, and the controller may each be disposed forward of the grip portion.

In the above configuration, the battery pack, motor, and controller, which are heavy objects, are positioned forward of the grip unit, which reduces the load on the worker when cutting using a vice.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor and the battery attachment portion may each be disposed forward of the grip portion, and the controller may be disposed rearward of the grip portion.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor and the controller may each be disposed forward of the grip portion, and the battery attachment portion may be disposed rearward of the grip portion.

The above configuration improves the weight balance of the reciprocating saw.

In one or more embodiments, the reciprocating saw may include a grip portion. The motor may be disposed forward of the grip portion, and the battery attachment portion and the controller may each be disposed rearward of the grip portion.

The following describes an embodiment with reference to the drawings. In the embodiment, the positional relationship of each part is described using the terms left, right, front, rear, top, and bottom. These terms indicate relative positions or directions based on the center of the reciprocating saw. The reciprocating saw has a motor 8 as a power source.

In this embodiment, the direction parallel to the rotation axis AX of the motor 8 is referred to as the axial direction, the direction going around the rotation axis AX is referred to as the circumferential direction or rotation direction, and the radial direction of the rotation axis AX is referred to as the radial direction.

In this embodiment, the rotation axis AX extends in the front-rear direction. The axial direction parallel to the rotation axis AX is the front-rear direction. In addition, in the radial direction, a position closer to the rotation axis AX or a direction approaching it is appropriately referred to as the radial inner side, and a position farther from the rotation axis AX or a direction moving away from it is appropriately referred to as the radial outer side.

[First embodiment]
Fig. 1 is a front perspective view of the reciprocating saw 1A according to this embodiment. Fig. 2 is a rear perspective view of the reciprocating saw 1A according to this embodiment. Fig. 3 is a view of the reciprocating saw 1A according to this embodiment from above. Fig. 4 is a view of the reciprocating saw 1A according to this embodiment from the right side. Fig. 5 is a cross-sectional view of the reciprocating saw 1A according to this embodiment. Fig. 6 is an exploded view of the reciprocating saw 1A according to this embodiment. Fig. 7 is a view showing the inside of the reciprocating saw 1A according to this embodiment.

The reciprocating saw 1A includes a rear housing 2, an intermediate housing 3, a front housing 4, a battery mounting section 5, a vice mounting section 6, a controller 7, a motor 8, a fan 9, a reciprocating motion conversion mechanism 10, a slider 11, and a guide shoe 12.

The rear housing 2 is made of synthetic resin. The rear housing 2 includes a left housing 2L and a right housing 2R that is disposed to the right of the left housing 2L. The left housing 2L and the right housing 2R form a pair of half-split housings. The rear housing 2 is composed of a pair of half-split housings. The left housing 2L and the right housing 2R are fixed by a number of screws 2S.

The rear housing 2 includes a grip portion 21 and a controller accommodating portion 22. The grip portion 21 is held by the operator. The controller accommodating portion 22 accommodates the controller 7. The grip portion 21 is rod-shaped and long in the front-rear direction. The controller accommodating portion 22 is located in front of the grip portion 21.

A trigger lever 14 is disposed on the grip portion 21. The trigger lever 14 is operated by the operator to start the motor 8. By operating the trigger lever 14, the motor 8 is switched between being driven and being stopped.

The intermediate housing 3 is disposed in front of the rear housing 2. The intermediate housing 3 is cylindrical. The rear end of the intermediate housing 3 is fixed to the front end of the rear housing 2. The intermediate housing 3 houses the motor 8.

The front housing 4 is disposed in front of the intermediate housing 3. The front housing 4 is cylindrical. The rear end of the front housing 4 is fixed to the front end of the intermediate housing 3. The front housing 4 houses the reciprocating motion conversion mechanism 10.

The battery mounting section 5 is disposed at the bottom of the controller housing section 22. The battery pack 13 is mounted on the battery mounting section 5. The battery pack 13 functions as a DC power source for the reciprocating saw 1A. The battery pack 13 is detachable from the battery mounting section 5. The battery pack 13 is mounted on the battery mounting section 5 by being inserted into the battery mounting section 5 from the left side to the right side of the battery mounting section 5. The battery pack 13 is removed from the battery mounting section 5 by being removed from the battery mounting section 5 to the left. The battery pack 13 includes a secondary battery. In this embodiment, the battery pack 13 includes a rechargeable lithium ion battery. When mounted on the battery mounting section 5, the battery pack 13 can supply power to the reciprocating saw 1A. The motor 8 is driven based on the power supplied from the battery pack 13.

The controller 7 controls at least the motor 8. The controller 7 has a circuit board and a number of electronic components mounted on the circuit board. Examples of the electronic components include a microcomputer and switching elements. The controller 7 is housed in the rear housing 2.

The motor 8 is the power source of the reciprocating saw 1A. The motor 8 is an electric motor. The motor 8 is an inner rotor type brushless motor. The motor 8 has a stator 15 and a rotor 16. The stator 15 is disposed around the rotor 16. The rotor 16 rotates relative to the stator 15. The rotor 16 rotates about the rotation axis AX. The rotation axis AX extends in the front-to-rear direction.

The stator 15 has a cylindrical stator core 15A, a rear insulator 15B fixed to the rear of the stator core 15A, a front insulator 15C fixed to the front of the stator core 15A, and multiple coils 15D wound around the teeth of the stator core 15A via the rear insulator 15B and the front insulator 15C.

The rotor 16 has a rotor core 16A, a permanent magnet 16B, and a rotor shaft 16C. A sensor board 17 is attached to the rear insulator 15B, which detects the rotation of the rotor 16 by detecting the position of the permanent magnet 16B.

At least a portion of the motor 8 is housed in the motor case 18. The intermediate housing 3 includes the motor case 18. A gear case 19 is disposed in front of the motor case 18. The front housing 4 includes the gear case 19 and a cover 19C that covers the gear case 19. The cover 19C is made of rubber and is insulating. The reciprocating motion conversion mechanism 10 is housed in the gear case 19.

The stator 15 is disposed inside the motor case 18. The stator 15 is fixed to the motor case 18.

The rear end of the rotor shaft 16C is rotatably supported by the rotor bearing 20. The rotor bearing 20 is held in the motor case 18.

The fan 9 is fixed to the front of the rotor shaft 16C. When the rotor shaft 16C rotates, the fan 9 rotates. When the fan 9 rotates, an airflow is generated around the motor 8. The motor 8 is cooled by the airflow generated by the rotation of the fan 9.

A pinion gear 24 is provided at the front end of the rotor shaft 16C. The pinion gear 24 is disposed inside the gear case 19. The rotor shaft 16C is connected to the reciprocating motion conversion mechanism 10 via the pinion gear 24.

The reciprocating motion conversion mechanism 10 converts the rotational motion of the rotor 16 into reciprocating motion in the forward and backward directions. The reciprocating motion conversion mechanism 10 is disposed forward of the motor 8. The reciprocating motion conversion mechanism 10 reciprocates the blade 31 held by the slider 11 in the forward and backward directions based on the rotational force of the motor 8. The slider 11 holds the blade 31 via the blade holder 30.

The reciprocating motion conversion mechanism 10 has a bevel gear 25 to which the pinion gear 24 is connected, a support shaft 26 to which the bevel gear 25 is fixed, and an eccentric pin 27 provided at an eccentric position of the bevel gear 25. The support shaft 26 is rotatably supported by

bearings

28 and 29. A slider block 11A is provided on the slider 11. At least a portion of the eccentric pin 27 is disposed inside the slider block 11A. The bevel gear 25 rotates around a rotation axis BX perpendicular to the rotation axis AX. As the bevel gear 25 rotates and the eccentric pin 27 revolves around the rotation axis BX, the eccentric pin 27 moves left and right inside the slider block 11A. As the eccentric pin 27 moves left and right inside the slider block 11A while revolving around the rotation axis BX, the slider 11 reciprocates forward and backward.

The slider 11 is reciprocated in the front-rear direction by the rotational force of the motor 8 transmitted via the reciprocating motion conversion mechanism 10. The slider 11 is guided in the front-rear direction by slider guide 90 and slider guide 91. The slider 11 has a holder portion 11B that holds a blade 31, which is a type of tip tool. The holder portion 11B is provided at the front end of the slider 11. The slider 11 functions as a tip tool holding portion to which the tip tool is attached. The guide shoe 12 is provided on the front side of the slider 11.

The vice 40 is attached to the vice attachment portion 6. The vice 40 is fixed to the object to be cut. The vice 40 has a fixed member 41 that is brought into contact with the object to be cut, a winding member 42 that is connected to the fixed member 41 and wound around the object to be cut, a fastener 43 that is operated to tighten the winding member 42, and an attachment member 44 that is attached to the vice attachment portion 6.

The vice mounting portion 6 is disposed forward of the motor 8. The vice mounting portion 6 is disposed forward of the reciprocating motion conversion mechanism 10. The vice mounting portion 6 includes a hole provided in the front end portion of the front housing 4. The mounting member 44 includes a rod-shaped member that is inserted into the hole of the vice mounting portion 6. In this embodiment, the winding member 42 is a chain. In this embodiment, the vice 40 is a so-called chain vice.

The vice 40 is detachable from the vice mounting portion 6. The vice 40 is attached to the vice mounting portion 6 by inserting the mounting member 44 into the vice mounting portion 6 from the left side to the right side of the vice mounting portion 6. The vice 40 is removed from the vice mounting portion 6 by removing the mounting member 44 from the vice mounting portion 6 to the left.

When cutting a pipe, for example, as the cutting object, the operator abuts the fixing member 41 against a part of the pipe and wraps the winding member 42 around the pipe. After the winding member 42 is wrapped around the pipe, the operator operates the fastener 43 to tighten the winding member 42 to the pipe. This secures the vice 40 to the pipe. After the vice 40 is secured to the pipe, the operator operates the trigger lever 14. When the trigger lever 14 is operated, the motor 8 is driven by power supplied from the battery pack 13. When the rotor 16 rotates about the rotation axis AX, the pinion gear 24 provided at the front end of the rotor shaft 16C rotates. When the pinion gear 24 rotates, the bevel gear 25 connected to the pinion gear 24 rotates. When the bevel gear 25 rotates, the eccentric pin 27 moves eccentrically with respect to the rotation axis BX of the bevel gear 25, and the slider 11 reciprocates in the forward and backward directions. When the slider 11 reciprocates back and forth, the blade 31 attached to the slider 11 also reciprocates back and forth. With the blade 31 reciprocating back and forth, the operator grips the grip portion 21 and rotates the reciprocating saw 1A around the mounting member 44. While gripping the grip portion 21, the operator rotates the reciprocating saw 1A around the mounting member 44 so that the grip portion 21 moves upward and the blade 31 moves downward. This pushes the reciprocating blade 31 into the pipe, cutting the pipe.

In this embodiment, the motor 8 and the battery attachment section 5 are each disposed forward of the grip section 21. The battery attachment section 5 is disposed rearward of the motor 8. The battery attachment section 5 is disposed below the motor 8.

The controller 7 is disposed rearward of the motor 8. The motor 8, the battery attachment section 5, and the controller 7 are each disposed forward of the grip section 21. In this embodiment, the controller 7 is plate-shaped. The controller 7 is disposed so that the surface of the controller 7 is perpendicular to the rotation axis AX.

As described above, in this embodiment, the reciprocating saw 1A includes a motor 8, a reciprocating motion conversion mechanism 10 that is disposed forward of the motor 8 and that reciprocates the blade 31 based on the rotational force of the motor 8, a battery mounting section 5 to which a battery pack 13 is attached, and a vice mounting section 6 that is disposed forward of the motor 8 and to which a vice 40 is attached.

In the above configuration, the battery pack 13, which is a DC power source, is used as the power source for the reciprocating saw 1A, eliminating the need to connect a cord to the reciprocating saw 1A. This prevents a decrease in the workability of the reciprocating saw 1A to which the vice 40 is attached. In addition, because the power source for the reciprocating saw 1A is the battery pack 13, there is no need to secure an AC power source at the work site. This allows the worker to carry out work using the reciprocating saw 1A without being restricted by the work environment.

In this embodiment, the reciprocating saw 1A includes a grip portion 21. The motor 8 and the battery attachment portion 5 are each positioned forward of the grip portion 21.

In the above configuration, the battery pack 13, which is a heavy object, is positioned forward of the grip portion 21, so that the load on the worker can be reduced when performing cutting work using the vice 40. As described above, for example, when cutting a pipe, the worker rotates the reciprocating saw 1A around the mounting member 44 while holding the grip portion 21 so that the grip portion 21 moves upward and the blade 31 moves downward. Since the battery pack 13, which is a heavy object, is positioned forward of the grip portion 21, so that the load on the worker can be reduced when performing cutting work using the vice 40.

In this embodiment, the battery attachment section 5 is positioned rearward of the motor 8.

The above configuration improves the weight balance of the reciprocating saw 1A, reducing the load on the operator when performing cutting work using the vice 40.

In this embodiment, the battery attachment section 5 is positioned below the motor 8.

In this embodiment, the vice 40 is attached to the vice mounting section 6 by being inserted from one side of the vice mounting section 6 to the other in the left-right direction, and the battery pack 13 is attached to the battery mounting section 5 by being inserted from one side of the battery mounting section 5 to the other in the left-right direction.

In this embodiment, the reciprocating saw 1A is equipped with a controller 7 that controls the motor 8. The controller 7 is positioned behind the motor 8.

In this embodiment, the motor 8, battery attachment section 5, and controller are each positioned forward of the grip section 21.

In the above configuration, the battery pack 13, motor 8, and controller, which are heavy objects, are positioned forward of the grip portion 21, so the load placed on the worker during cutting work using the vice 40 can be reduced.

Below, a modified example of this embodiment will be described. Each of Figs. 8 and 9 is a diagram showing the inside of a reciprocating saw 1A according to a modified example of this embodiment. As shown in Fig. 8, the controller 7 may be arranged so that the surface of the controller 7 is parallel to the rotation axis AX.

As shown in FIG. 9, the motor 8 and the battery attachment section 5 may each be disposed in front of the grip section 21, and the controller 7 may be disposed behind the grip section 21. In the example shown in FIG. 9, a controller housing section 32 is provided at the rear end of the grip section 21. The controller 7 is housed in the controller housing section 32.

10, 11, and 12 are diagrams for explaining modified methods of mounting the battery pack 13 according to the first embodiment. Each of Figs. 10, 11, and 12 shows an example in which the battery mounting section 5 is disposed below the motor 8. As shown in Fig. 10, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the left side of the battery mounting section 5 toward the right. As shown in Fig. 11, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the right side of the battery mounting section 5 toward the left. As shown in Fig. 12, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the rear side of the battery mounting section 5 toward the front.

FIGS. 13, 14, and 15 are diagrams for explaining modified methods of mounting the battery pack 13 according to the first embodiment. Each of FIG. 13, 14, and 15 shows an example in which the battery mounting section 5 is disposed above the motor 8. As shown in FIG. 13, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the front side of the battery mounting section 5 toward the rear. As shown in FIG. 14, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the right side of the battery mounting section 5 toward the left. As shown in FIG. 15, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the left side of the battery mounting section 5 toward the right.

As described with reference to Figures 10 to 15, by arranging the battery mounting section 5 above or below the motor 8, the amount by which the battery pack 13 protrudes in the left-right direction of the reciprocating saw 1A is reduced. This allows the cutting operation to be performed smoothly even if an obstacle is present in the left-right direction of the reciprocating saw 1A during cutting operation.

16, 17, 18, and 19 are diagrams for explaining modified methods of mounting the battery pack 13 according to the first embodiment. Each of Figs. 16, 17, 18, and 19 shows an example in which the battery mounting section 5 is disposed to the right of the motor 8. As shown in Figs. 16 and 18, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted downward from the upper side of the battery mounting section 5. As shown in Fig. 17, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted upward from the lower side of the battery mounting section 5. As shown in Fig. 19, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted forward from the rear side of the battery mounting section 5.

20, 21, 22, and 23 are diagrams for explaining modified methods of mounting the battery pack 13 according to the first embodiment. Each of Figs. 20, 21, 22, and 23 shows an example in which the battery mounting section 5 is disposed to the left of the motor 8. As shown in Figs. 20 and 22, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted downward from the upper side of the battery mounting section 5. As shown in Fig. 21, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted upward from the lower side of the battery mounting section 5. As shown in Fig. 23, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted forward from the rear side of the battery mounting section 5.

As described with reference to Figures 16 to 23, by arranging the battery attachment section 5 to the left or right of the motor 8, the amount by which the battery pack 13 protrudes in the vertical direction of the reciprocating saw 1A is reduced. This allows the cutting operation to be carried out smoothly even if an obstacle is present in the vertical direction of the reciprocating saw 1A during cutting operation.

[Second embodiment]
A second embodiment will now be described. In the following description, components that are the same as or equivalent to those in the above-described embodiment are given the same reference numerals, and descriptions of those components will be simplified or omitted.

FIG. 24 is a front perspective view of the reciprocating saw 1B according to this embodiment. FIG. 25 is a rear perspective view of the reciprocating saw 1B according to this embodiment. FIG. 26 is a top view of the reciprocating saw 1B according to this embodiment. FIG. 27 is a right side view of the reciprocating saw 1B according to this embodiment. FIG. 28 is an exploded view of the reciprocating saw 1B according to this embodiment. FIG. 29 is a view showing the inside of the reciprocating saw 1B according to this embodiment.

The reciprocating saw 1B includes a rear housing 200, an intermediate housing 3, a front housing 4, a battery mounting section 5, a vice mounting section 6, a controller 7, a motor 8, a fan 9, a reciprocating motion conversion mechanism 10, a slider 11, and a guide shoe 12.

The rear housing 200 includes a grip portion 210, a controller accommodating portion 220, a battery holding portion 230, and a connecting portion 240. The grip portion 210 is held by an operator. A trigger lever 14 is disposed in the grip portion 210. The controller accommodating portion 220 accommodates the controller 7. The battery holding portion 230 holds the battery pack 13 via the battery attachment portion 5. The connecting portion 240 is disposed below the grip portion 210. The connecting portion 240 is disposed so as to connect the controller accommodating portion 220 and the battery holding portion 230. The grip portion 210 is also disposed so as to connect the controller accommodating portion 220 and the battery holding portion 230. The grip portion 210 and the connecting portion 240 are each rod-shaped and long in the front-rear direction. The controller accommodating portion 220 is disposed in front of the grip portion 210 and the connecting portion 240. The battery holding portion 230 is disposed behind the grip portion 210 and the connecting portion 240. In an embodiment, the rear housing 200 includes a loop-shaped handle portion.

The intermediate housing 3 is disposed in front of the rear housing 200. The front housing 4 is disposed in front of the intermediate housing 3.

The battery attachment section 5 is disposed at the rear of the battery holding section 230. The battery pack 13 is attached to the battery attachment section 5. In this embodiment, the battery pack 13 is attached to the battery attachment section 5 by being inserted from the top of the battery attachment section 5 downward. The battery pack 13 is removed from the battery attachment section 5 by being pulled upward from the battery attachment section 5.

In this embodiment, the motor 8 is disposed in front of the grip portion 210. The battery attachment portion 5 is disposed rearward of the motor 8. The battery attachment portion 5 is disposed rearward of the grip portion 210. The battery attachment portion 5 is disposed in a battery holding portion 230 provided at the rear end portion of the grip portion 210. The controller 7 is disposed in front of the grip portion 210. The controller 7 is plate-shaped. The controller 7 is disposed so that the surface of the controller 7 is perpendicular to the rotation axis AX.

As described above, in this embodiment, the motor 8 is positioned forward of the grip portion 210, and the battery attachment portion 5 is positioned rearward of the grip portion 210.

In the above configuration, the battery pack 13, which is a heavy object, is positioned rearward of the grip portion 210, improving the weight balance of the reciprocating saw 1A. In addition, the connecting portion 240 is provided, improving the strength of the rear housing 200. The rear housing 200 can support the weight of the battery pack 13 with both the grip portion 210 and the connecting portion 240.

In this embodiment, the battery attachment section 5 is located at the rear end of the grip section 21.

The above configuration improves the weight balance of the reciprocating saw 1A.

In this embodiment, the battery pack 13 is attached to the battery attachment section 5 by inserting it downward from the top of the battery attachment section 5.

With the above configuration, the worker can smoothly attach and detach the battery pack 13 to the battery attachment section 5.

Below, a modified example of this embodiment will be described. Each of Figs. 30 and 31 is a diagram showing the inside of a reciprocating saw 1B according to a modified example of this embodiment. As shown in Fig. 30, the controller 7 may be arranged so that the surface of the controller 7 is parallel to the rotation axis AX.

As shown in FIG. 31, the motor 8 may be disposed in front of the grip portion 210, and the controller 7 may be disposed behind the grip portion 210. In the example shown in FIG. 31, the controller 7 is housed in a battery holding portion 230 provided at the rear end of the grip portion 210. In the example shown in FIG. 31, the controller 7 is disposed so that the surface of the controller 7 is perpendicular to the rotation axis AX.

32 to 39 are diagrams for explaining modified examples of the method of mounting the battery pack 13 according to the second embodiment. Each of Figs. 32 to 39 shows an example in which the battery mounting section 5 is disposed rearward of the grip section 210. As shown in Fig. 32, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted downward from the upper side of the battery mounting section 5. As shown in Fig. 33, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted upward from the lower side of the battery mounting section 5. As shown in Fig. 34, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the left side of the battery mounting section 5 toward the right. As shown in Fig. 35, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted from the right side of the battery mounting section 5 toward the left. As shown in Fig. 36, the battery pack 13 may be mounted on the battery mounting section 5 by being inserted downward from the upper side of the battery mounting section 5 in a direction inclined forward. As shown in FIG. 37, the battery pack 13 may be attached to the battery mounting section 5 by being inserted from the lower side of the battery mounting section 5 toward the upper side in a direction that slopes backward. As shown in FIG. 38, the battery pack 13 may be attached to the battery mounting section 5 by being inserted from the lower side of the battery mounting section 5 toward the upper side in a direction that slopes forward. As shown in FIG. 39, the battery pack 13 may be attached to the battery mounting section 5 by being inserted from the upper side of the battery mounting section 5 toward the lower side in a direction that slopes backward.

[Third embodiment]
A third embodiment will now be described. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

Figure 40 is a view of the reciprocating saw 1C according to this embodiment as seen from the right side. Figure 41 is a cross-sectional view of the reciprocating saw 1C according to this embodiment. Figure 42 is a view of the rear part of the reciprocating saw 1C according to this embodiment as seen from the right side. Figure 43 is an exploded perspective view from the rear showing the rear part of the reciprocating saw 1C according to this embodiment.

The reciprocating saw 1C includes a rear housing 200C, a front housing 4, a battery mounting section 5, a vice mounting section 6, a controller 7, a motor 8, a reciprocating motion conversion mechanism 10, a slider 11, and a guide shoe 12.

The rear housing 200C includes a grip portion 210C, a storage portion 220C, a battery holding portion 230C, and a connecting portion 240C. The grip portion 210C is held by the operator. A trigger lever 14 is arranged on the grip portion 210C. The storage portion 220C stores the controller 7 and the motor 8. The motor 8 is arranged forward of the controller 7. The battery holding portion 230C holds the battery pack 13 via the battery attachment portion 5. The battery attachment portion 5 is arranged at the rear of the battery holding portion 230C. The connecting portion 240C is arranged below the grip portion 210C. The connecting portion 240C is arranged to connect 220C and the battery holding portion 230C. The grip portion 210C is also arranged to connect the storage portion 220C and the battery holding portion 230C. The grip portion 210C and the connecting portion 240C are each rod-shaped and long in the front-rear direction. The storage section 220C is disposed forward of the grip section 210C and the connecting section 240C. The battery holding section 230C is disposed rearward of the grip section 210C and the connecting section 240C. The battery holding section 230C is disposed so as to connect the rear end of the grip section 210C and the rear end of the connecting section 240C. The rear housing 200C includes a loop-shaped handle section.

The battery attachment section 5 is disposed at the rear of the battery holding section 230C. The battery pack 13 is attached to the battery attachment section 5. In this embodiment, the battery pack 13 is attached to the battery attachment section 5 by being inserted into the battery attachment section 5 in a direction that slopes downward from the top of the battery attachment section 5. The battery pack 13 is removed from the battery attachment section 5 by being removed from the battery attachment section 5 in a direction that slopes upward and backward.

In this embodiment, the battery holding portion 230C has a guard portion 250 that faces the bottom surface of the battery pack 13 attached to the battery attachment portion 5. The guard portion 250 protrudes rearward from the lower portion of the battery holding portion 230C. The bottom surface of the battery pack 13 attached to the battery attachment portion 5 and the top surface of the guard portion 250 face each other with a gap therebetween.

In this embodiment, the motor 8 is disposed forward of the grip portion 210C. The battery attachment portion 5 is disposed rearward of the motor 8. The battery attachment portion 5 is disposed rearward of the grip portion 210C. The battery attachment portion 5 is disposed in the battery holding portion 230C provided at the rear end portion of the grip portion 210C. The controller 7 is disposed forward of the grip portion 210C. The controller 7 is plate-shaped. The controller 7 is disposed so that the surface of the controller 7 is inclined with respect to the rotation axis AX.

As described above, in this embodiment, the motor 8 is positioned forward of the grip portion 210C, and the battery attachment portion 5 is positioned rearward of the grip portion 210C.

In the above configuration, the battery pack 13, which is a heavy object, is positioned rearward of the grip portion 210C, improving the weight balance of the reciprocating saw 1C. In addition, the connecting portion 240C is provided, improving the strength of the rear housing 200. The rear housing 200 can support the weight of the battery pack 13 with both the grip portion 210C and the connecting portion 240C.

In this embodiment, the battery attachment section 5 is located at the rear end of the grip section 210C.

The above configuration improves the weight balance of the reciprocating saw 1C.

In this embodiment, the battery pack 13 is attached to the battery attachment section 5 by inserting it downward from the top of the battery attachment section 5 in a direction that tilts forward.

The above configuration allows the operator to smoothly attach and detach the battery pack 13 to the battery attachment section 5. In addition, because the battery pack 13 is positioned at an angle, the front-to-rear and up-to-down dimensions of the reciprocating saw 1C are prevented from becoming large.

In this embodiment, the battery holding portion 230C has a guard portion 250 that faces the underside of the battery pack 13.

In the above configuration, the worker can carry out the work while supporting the guard portion 250 from below with his/her hands.

[Fourth embodiment]
A fourth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

FIG. 44 is a view of the reciprocating saw 1D according to this embodiment from the right side. FIG. 45 is a cross-sectional view showing the reciprocating saw 1D according to this embodiment.

The reciprocating saw 1D includes a rear housing 200D, a front housing 4, a battery mounting section 5, a vice mounting section 6, a controller 7, a motor 8, a reciprocating motion conversion mechanism 10, a slider 11, and a guide shoe 12.

The rear housing 200D includes a grip portion 210D, a storage portion 220D, a first connecting portion 240D, and a second connecting portion 230D. The grip portion 210D is held by an operator. A trigger lever 14 is arranged in the grip portion 210D. The storage portion 220D stores the controller 7 and the motor 8. The motor 8 is arranged forward of the controller 7. The first connecting portion 240D is arranged below the grip portion 210D. The first connecting portion 240D is arranged so as to connect the storage portion 220D and the second connecting portion 230D. The grip portion 210D is also arranged so as to connect the storage portion 220D and the second connecting portion 230D. The grip portion 210D and the first connecting portion 240D are each rod-shaped and long in the front-rear direction. The storage portion 220D is arranged forward of the grip portion 210D and the first connecting portion 240D. The second connecting portion 230D is disposed rearward of the grip portion 210D and the first connecting portion 240D. The second connecting portion 230D is disposed so as to connect the rear end portion of the grip portion 210D to the rear end portion of the first connecting portion 240D. The rear housing 200D includes a loop-shaped handle portion.

In this embodiment, the first connecting part 240D holds the battery pack 13 via the battery mounting part 5. The battery mounting part 5 is disposed at the rear or bottom of the first connecting part 240D. The battery pack 13 is mounted to the battery mounting part 5. In this embodiment, the battery pack 13 is mounted to the battery mounting part 5 by being inserted from the rear side of the battery mounting part 5 toward the front. The battery pack 13 is removed from the battery mounting part 5 by being removed toward the rear from the battery mounting part 5.

In this embodiment, the battery pack 13 may be attached to the battery mounting section 5 by being inserted into the battery mounting section 5 from the front side to the rear side of the battery mounting section 5. In this case, the battery pack 13 is removed from the battery mounting section 5 by being pulled out from the battery mounting section 5 toward the front.

In this embodiment, the battery pack 13 may be attached to the battery mounting section 5 by being inserted into the battery mounting section 5 from the left side to the right side of the battery mounting section 5. In this case, the battery pack 13 is removed from the battery mounting section 5 by being removed from the battery mounting section 5 toward the left.

In this embodiment, the battery pack 13 may be attached to the battery mounting section 5 by being inserted into the battery mounting section 5 from the right side to the left side of the battery mounting section 5. In this case, the battery pack 13 is removed from the battery mounting section 5 by being removed from the battery mounting section 5 to the right.

[Fifth embodiment]
A fifth embodiment will be described below. In the following description, the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description of those components will be simplified or omitted.

FIG. 46 is a view of the reciprocating saw 1E according to this embodiment from the right side. FIG. 47 is a cross-sectional view of the reciprocating saw 1E according to this embodiment.

The reciprocating saw 1E includes a rear housing 200E, a front housing 4, a battery mounting section 5, a vice mounting section 6, a controller 7, a motor 8, a reciprocating motion conversion mechanism 10, a slider 11, and a guide shoe 12.

The rear housing 200E includes a grip portion 210E, a motor accommodating portion 220E, a first connecting portion 240E, a second connecting portion 230E, and a controller accommodating portion 260. The grip portion 210E is held by an operator. A trigger lever 14 is arranged in the grip portion 210E. The motor accommodating portion 220E accommodates the motor 8. The first connecting portion 240E is arranged below the grip portion 210E. The first connecting portion 240E is arranged so as to connect the motor accommodating portion 220E and the second connecting portion 230E. The grip portion 210E is also arranged so as to connect the motor accommodating portion 220E and the second connecting portion 230E. The grip portion 210E and the first connecting portion 240E are each rod-shaped and long in the front-rear direction. The motor accommodating portion 220E is arranged forward of the grip portion 210E and the first connecting portion 240E. The second connecting portion 230E is disposed rearward of the grip portion 210E and the first connecting portion 240E. The second connecting portion 230E is disposed so as to connect the rear end of the grip portion 210E to the rear end of the first connecting portion 240E. The rear housing 200E includes a loop-shaped handle portion. The controller accommodating portion 260 accommodates the controller 7. The controller accommodating portion 260 is provided in the front or bottom of the first connecting portion 240E.

In this embodiment, the motor housing 220E holds the battery pack 13 via the battery attachment section 5. The battery attachment section 5 is disposed at the bottom of the motor housing 220E. The battery pack 13 is attached to the battery attachment section 5. In this embodiment, the battery pack 13 is attached to the battery attachment section 5 by being inserted into the battery attachment section 5 from the front side to the rear side of the battery attachment section 5. The battery pack 13 is removed from the battery attachment section 5 by being removed from the battery attachment section 5 toward the front.

In this embodiment, the battery pack 13 may be attached to the battery mounting section 5 by being inserted from the rear side of the battery mounting section 5 toward the front. In this case, the battery pack 13 is removed from the battery mounting section 5 by being pulled out toward the rear.

　1A...reciprocating saw, 1B...reciprocating saw, 1C...reciprocating saw, 1D...reciprocating saw, 1E...reciprocating saw, 2...rear housing, 2L...left housing, 2R...right housing, 2S...screw, 3...middle housing, 4...front housing, 5...battery mounting section, 6...vice mounting section, 7...controller, 8...motor, 9...fan, 10...reciprocating motion conversion mechanism, 11...slider, 11A...slider block, 11B...holder section, 12...guide shaft 13: battery pack, 14: trigger lever, 15: stator, 15A: stator core, 15B: rear insulator, 15C: front insulator, 15D: coil, 16: rotor, 16A: rotor core, 16B: permanent magnet, 16C: rotor shaft, 17: sensor board, 18: motor case, 19: gear case, 19C: cover, 20: rotor bearing, 21: grip portion, 22: controller housing portion, 24: pinion gear , 25... bevel gear, 26... support shaft, 27... eccentric pin, 28... bearing, 29... bearing, 30... blade holder, 31... blade, 32... controller housing, 40... vice, 41... fixing member, 42... winding member, 43... fastener, 44... mounting member, 90... slider guide, 91... slider guide, 200... rear housing, 200C... rear housing, 200D... rear housing, 200E... rear housing, 210... grip portion , 210C...grip portion, 210D...grip portion, 210E...grip portion, 220...controller housing portion, 220C...housing portion, 220D...housing portion, 220E...motor housing portion, 230...battery holding portion, 230C...battery holding portion, 230D...second connecting portion, 230E...second connecting portion, 240...connecting portion, 240C...connecting portion, 240D...first connecting portion, 240E...first connecting portion, 250...guard portion, 260...controller housing portion, AX...rotating axis.

Claims

A motor;
a reciprocating motion conversion mechanism that is disposed forward of the motor and causes the blade to reciprocate based on a rotational force of the motor;
a battery mounting section in which a battery pack is mounted;
A vice mounting portion is disposed forward of the motor and a vice is mounted on the vice mounting portion.
Reciprocating saw.
Equipped with a grip section,
The motor and the battery mounting portion are each disposed forward of the grip portion.
2. The reciprocating saw of claim 1.
The battery mounting section is disposed rearward of the motor.
3. The reciprocating saw of claim 2.
The battery mounting section is disposed below the motor.
3. The reciprocating saw of claim 2.
The vise is attached to the vise mounting portion by being inserted from one side of the vise mounting portion to the other side in the left-right direction,
the battery pack is attached to the battery mounting portion by being inserted from one side of the battery mounting portion to the other side in the left-right direction;
3. The reciprocating saw of claim 2.
Equipped with a grip section,
The motor is disposed forward of the grip portion,
The battery mounting portion is disposed rearward of the grip portion.
2. The reciprocating saw of claim 1.
The battery mounting portion is disposed at a rear end portion of the grip portion.
7. The reciprocating saw of claim 6.
The battery pack is attached to the battery mounting portion by being inserted from one side of the battery mounting portion to the other side.
7. The reciprocating saw of claim 6.
The battery pack is attached to the battery mounting portion by being inserted downward from an upper side of the battery mounting portion.
9. The reciprocating saw of claim 8.
A controller for controlling the motor is provided.
The controller is disposed rearward of the motor.
2. The reciprocating saw of claim 1.
Equipped with a grip section,
The motor, the battery mounting section, and the controller are each disposed forward of the grip section.
11. The reciprocating saw of claim 10.
Equipped with a grip section,
the motor and the battery mounting portion are each disposed forward of the grip portion,
The controller is disposed rearward of the grip portion.
11. The reciprocating saw of claim 10.
Equipped with a grip section,
the motor and the controller are each disposed forward of the grip portion,
The battery mounting portion is disposed rearward of the grip portion.
11. The reciprocating saw of claim 10.
Equipped with a grip section,
The motor is disposed forward of the grip portion,
The battery mounting section and the controller are each disposed rearward of the grip section.
11. The reciprocating saw of claim 10.
The battery pack is attached to the battery mounting portion by being inserted downward from an upper side of the battery mounting portion in a direction inclined forward.
8. The reciprocating saw of claim 7.
A connecting portion disposed below the grip portion;
a battery holding portion disposed on the rear side of the grip portion and the connecting portion so as to connect a rear end portion of the grip portion and a rear end portion of the connecting portion,
The battery mounting portion is disposed at the rear of the battery holding portion.
16. The reciprocating saw of claim 15.
The battery holding portion has a guard portion facing a lower surface of the battery pack.
17. The reciprocating saw of claim 16.
A first connecting portion disposed below the grip portion;
a second connecting portion disposed on the rear side of the grip portion and the first connecting portion so as to connect a rear end portion of the grip portion and a rear end portion of the first connecting portion;
The battery mounting portion is disposed at the rear or lower portion of the first connecting portion.
5. The reciprocating saw of claim 4.
a motor housing portion that is disposed forward of the grip portion and that houses the motor;
The battery mounting section is disposed below the motor housing section.
3. The reciprocating saw of claim 2.