JP2020179491A - Electric tool - Google Patents

Abstract

To provide a technology that can inhibit removal of a handle by a user.SOLUTION: The specification discloses an electric tool. The electric tool may include: a motor; a power transmission mechanism connected to the motor; a housing which houses the motor and the power transmission mechanism; a tip tool holding part which is connected to the power transmission mechanism and to which a tip tool can be attached or detached; and a handle attached to the housing. The handle may be irremovable from the housing unless a tool is used.SELECTED DRAWING: Figure 1

Description

The techniques disclosed herein relate to power tools.

Patent Document 1 describes a motor, a power transmission mechanism connected to the motor, a housing accommodating the motor and the power transmission mechanism, and a tip connected to the power transmission mechanism and to which a tip tool can be attached and detached. A power tool having a tool holding portion and a handle attached to the housing is disclosed.

Japanese Unexamined Patent Publication No. 2005-138239

When the user uses the power tool, it is preferable that the user grips the handle and stably holds the power tool while performing the work. However, if the user has a configuration in which the handle can be freely removed, the power tool may be used with the handle removed. Technology that can prevent the user from removing the handle is expected.

This specification discloses a power tool. The power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing accommodating the motor and the power transmission mechanism, and the power transmission mechanism, and the tip tool can be attached and detached. It may include a holding portion and a handle attached to the housing. The handle may be non-removable from the housing without the use of tools.

According to the above configuration, since the user cannot remove the handle without using a tool, it is possible to prevent the power tool from being used with the handle removed.

The present specification also discloses another power tool. The power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing accommodating the motor and the power transmission mechanism, and the power transmission mechanism, and the tip tool can be attached and detached. It may include a holding portion and a handle attached to the housing. The handle may not be removable from the housing without disassembling the housing and / or the handle.

According to the above configuration, the user cannot remove the handle without disassembling the housing and / or the handle, so that it is possible to prevent the power tool from being used with the handle removed.

The present specification also discloses yet another power tool. The power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing accommodating the motor and the power transmission mechanism, and the power transmission mechanism, and the tip tool can be attached and detached. A holding portion and a handle integrally formed with the housing may be provided.

According to the above configuration, since the user cannot remove the handle from the housing, it is possible to prevent the power tool from being used with the handle removed.

10 is a perspective view of the power tool 2 of the first embodiment as viewed from the front left upper side in a state where the side grip 10 is arranged on the left side of the spacer housing 8. It is a vertical cross-sectional view of the power tool 2 of Example 1. FIG. It is a perspective view of the spacer housing 8 of the power tool 2 of Example 1. FIG. It is a perspective view of the attachment member 30 of the power tool 2 of Example 1. FIG. It is a cross-sectional view of the power tool 2 of the first embodiment in a situation where the mounting member 30 is in the unlocked state. It is a cross-sectional view of the power tool 2 of the first embodiment in a situation where the mounting member 30 is in a locked state. FIG. 5 is a perspective view of the power tool 2 of the first embodiment as viewed from the front left upper side in a state where the side grip 10 is arranged on the right side of the spacer housing 8. FIG. 5 is a perspective view of the power tool 2 of the first embodiment as viewed from the front left upper side in a state where the side grip 10 is arranged above the spacer housing 8. 10 is a perspective view of the power tool 102 of the second embodiment, in which the side grip 116 is arranged on the left side of the spacer housing 104, as viewed from the front right upper side. FIG. 5 is a perspective view of a portion of the power tool 102 of the second embodiment in the vicinity of the spacer housing 104. It is a perspective view of the mounting member 114 of the power tool 102 of the second embodiment. FIG. 5 is a cross-sectional view of the power tool 102 of the second embodiment in a situation where the mounting member 114 is in the unlocked state. It is a cross-sectional view of the power tool 102 of the second embodiment in the situation where the mounting member 114 is in the locked state. FIG. 5 is a perspective view of the power tool 102 of the second embodiment, in which the side grip 116 is arranged above the spacer housing 104, as viewed from the front right upper side. 10 is a perspective view of the power tool 202 of the third embodiment, in which the side grip 216 is arranged on the left side of the spacer housing 204, as viewed from the front right upper side. It is a perspective view of the part in the vicinity of the spacer housing 204 of the power tool 202 of Example 3. FIG. It is a perspective view of the mounting member 214 and the side grip 216 of the power tool 202 of the third embodiment. It is a cross-sectional view of the power tool 202 of the third embodiment in the situation where the mounting member 214 is in the unlocked state. It is a cross-sectional view of the power tool 202 of the third embodiment in the state where the mounting member 214 is in the locked state. 10 is a perspective view of the power tool 202 of the third embodiment, in which the side grip 216 is arranged on the right side of the spacer housing 204, as viewed from the front right upper side. 10 is a perspective view of the power tool 202 of the third embodiment, in which the side grip 216 is arranged above the spacer housing 204, as viewed from the front right upper side. It is a perspective view of the power tool 302 of Example 4 seen from the front left upper side. It is sectional drawing of the electric tool 302 of Example 4. FIG.

Hereinafter, typical and non-limiting specific examples of the present invention will be described in detail with reference to the drawings. This detailed description is intended to provide those skilled in the art with details for implementing the preferred examples of the invention and is not intended to limit the scope of the invention. In addition, the additional features and inventions disclosed below may be used separately or together with other features and inventions to provide further improved power tools, methods of manufacture and use thereof.

In addition, the combination of features and processes disclosed in the following detailed description is not essential for carrying out the present invention in the broadest sense, and is particularly for explaining a typical specific example of the present invention. It is to be described. In addition, the various features of the above and below representative examples, as well as the various features of those described in the independent and dependent claims, are described herein in providing additional and useful embodiments of the invention. It does not have to be combined according to the specific examples given or in the order listed.

All features described herein and / or claims are, apart from the constitution of the features described in the examples and / or claims, as a limitation to the disclosure at the time of filing and the specific matters claimed. It is intended to be disclosed individually and independently of each other. In addition, all numerical ranges and statements relating to groups or groups are made with the intention of disclosing their intermediate composition as a limitation to the disclosure at the time of filing and the specific matters claimed.

In one or more embodiments, the power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing containing the motor and the power transmission mechanism, and the power transmission mechanism. , The tip tool holding portion to which the tip tool can be attached and detached, and the handle attached to the housing may be provided. The handle may be non-removable from the housing without the use of tools.

According to the above configuration, since the user cannot remove the handle without using a tool, it is possible to prevent the power tool from being used with the handle removed.

In one or more embodiments, the power tool is further rotatably attached to the housing about an axis of rotation with respect to the housing, even if it comprises an attachment member that holds the handle. Good. The power tool may be switchable between a state in which rotation of the mounting member with respect to the housing is permitted and a state in which rotation around the rotation axis is prohibited.

According to the above configuration, the user can freely adjust the mounting position and mounting angle of the handle with respect to the housing, so that the convenience of the user can be improved.

In one or more embodiments, the housing may have a cylindrical portion centered on the axis of rotation. The mounting member is slidably in contact with the cylindrical portion, and may include a band having a first end portion and a second end portion. The power tool may allow the mounting member to rotate about the rotation axis with respect to the housing when the distance between the first end and the second end of the band is widened. .. The power tool has a housing of the mounting member due to a frictional force acting between the band and the cylindrical portion when the distance between the first end portion and the second end portion of the band is narrowed. The rotation around the rotation axis may be prohibited.

According to the above configuration, with a simple configuration, it is possible to switch between a state in which rotation of the mounting member with respect to the housing is permitted and a state in which rotation around the rotation axis is prohibited.

In one or more embodiments, the first end of the band may be provided with a first protrusion that projects outward. A second protruding portion that protrudes outward may be provided at the second end portion of the band. The power tool may further include an adjusting member having a storage space for accommodating the first protrusion and the second protrusion. The adjusting member may be attached to the band so as to advance or retreat with respect to the band by rotating the band around a rotation axis. When the adjusting member is in a position retracted with respect to the band, the first protruding portion and the second protruding portion may be separated from each other inside the accommodation space. When the adjusting member is in a position advanced with respect to the band, each of the first protruding portion and the second protruding portion abuts on the inner surface of the accommodating space and is pressed against the first protruding portion. The second protrusions may be close to each other.

According to the above configuration, the simple configuration widens the gap between the first and second ends of the band and narrows the gap between the first and second ends of the band. You can switch between the states.

In one or more embodiments, the handle may be rotatably held around the axis of rotation by the mounting member. The adjusting member may be fixed to the handle.

According to the above configuration, by rotating the handle about the rotation axis with respect to the mounting member, the distance between the first end portion and the second end portion of the band is widened, and the first end portion of the band is widened. It is possible to switch between the state where the distance between the and the second end is narrowed.

In one or more embodiments, the first end of the band may be provided with a first protrusion that projects outward. A second protruding portion that protrudes outward may be provided at the second end portion of the band. The power tool may further include a bolt having a head and a shaft portion, and a nut screwed onto the shaft portion of the bolt. The shaft portion of the bolt may penetrate the first protruding portion and the second protruding portion. The first protruding portion and the second protruding portion may be arranged between the head of the bolt and the nut. When the nut is in a position retracted with respect to the head of the bolt, the first protruding portion and the second protruding portion may be separated from each other. When the nut is in a position advanced with respect to the head of the bolt, the first protrusion and the second protrusion are sandwiched between the head of the bolt and the nut, and the first protrusion The portion and the second protruding portion may be close to each other.

According to the above configuration, the simple configuration widens the gap between the first and second ends of the band and narrows the gap between the first and second ends of the band. You can switch between the states.

In one or more embodiments, the handle may be rotatably held by the mounting member around the shaft of the bolt. One of the head and the nut of the bolt may be fixed to the mounting member. The head of the bolt and the other of the nut may be fixed to the handle.

According to the above configuration, by rotating the handle around the rotation axis along the shaft portion of the bolt with respect to the mounting member, the distance between the first end portion and the second end portion of the band is widened. And, it is possible to switch between the state where the distance between the first end portion and the second end portion of the band is narrowed.

In one or more embodiments, the housing may have a cylindrical portion centered on the axis of rotation. The mounting member is slidably in contact with the cylindrical portion, and has a first end portion, a band having a second end portion, and the first end portion and the second end portion of the band. It may be provided with a movable member that holds and can adjust the position from the housing in a direction orthogonal to the rotation axis. The power tool may allow the mounting member to rotate about the rotation axis with respect to the housing when the movable member is located close to the housing. When the movable member is located far from the housing, the power tool rotates the mounting member around the rotation axis with respect to the housing by a frictional force acting between the band and the cylindrical portion. It may be prohibited.

According to the above configuration, with a simple configuration, it is possible to switch between a state in which rotation of the mounting member with respect to the housing is permitted and a state in which rotation around the rotation axis is prohibited.

In one or more embodiments, the mounting member is further fixed in position from the housing in a direction orthogonal to the axis of rotation and is located farther from the housing than the holding member. It may be provided with a member. The power tool may further include a bolt having a head and a shaft portion, and a nut screwed onto the shaft portion of the bolt. The shaft portion of the bolt may penetrate the movable member and the base member. The movable member and the base member may be arranged between the head of the bolt and the nut. The movable member may separate from the base member when the nut is in a retracted position with respect to the head of the bolt. When the nut is in a position advanced with respect to the head of the bolt, the movable member and the base member are sandwiched between the head of the bolt and the nut, and the movable member becomes the base member. May be close.

According to the above configuration, the movable member is separated from the base member, that is, the movable member is located near the housing, and the movable member is close to the base member, that is, the movable member is the housing. You can switch between states that are far from.

In one or more embodiments, the handle may be rotatably held by the mounting member around the shaft of the bolt. One of the head and the nut of the bolt may be fixed to the movable member. The head of the bolt and the other of the nut may be fixed to the handle.

According to the above configuration, by rotating the handle around the rotation axis along the shaft portion of the bolt with respect to the mounting member, the movable member is separated from the base member, that is, the movable member is placed near the housing. It is possible to switch between a certain state and a state in which the movable member is close to the base member, that is, a state in which the movable member is located far from the housing.

In one or more embodiments, the power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing containing the motor and the power transmission mechanism, and the power transmission mechanism. , The tip tool holding portion to which the tip tool can be attached and detached, and the handle attached to the housing may be provided. The handle may not be removable from the housing without disassembling the housing and / or the handle.

According to the above configuration, the user cannot remove the handle without disassembling the housing and / or the handle, so that it is possible to prevent the power tool from being used with the handle removed.

In one or more embodiments, the power tool is connected to a motor, a power transmission mechanism connected to the motor, a housing containing the motor and the power transmission mechanism, and the power transmission mechanism. , The tip tool holding portion to which the tip tool can be attached and detached, and the handle integrally formed with the housing may be provided.

According to the above configuration, since the user cannot remove the handle from the housing, it is possible to prevent the power tool from being used with the handle removed.

In one or more embodiments, the power tool may be detachably attached to the housing and further include a battery to power the motor.

According to the above configuration, power can be supplied to the motor without connecting to an external power source with a power cord.

In one or more embodiments, the power tool may be capable of using a grinding wheel as the tip tool. The power tool may function as a grinder.

According to the above configuration, it is possible to prevent the power tool functioning as a grinder from being used with the handle removed.

In one or more embodiments, the housing may include a grip. The user may be able to use the power tool with the grip held by one hand and the handle held by the other hand.

According to the above configuration, when using the power tool, the user can grip the grip with one hand and the handle with the other hand to stably hold the power tool.

(Example 1)
As shown in FIG. 1, the power tool 2 of this embodiment is, for example, a grinder. The power tool 2 includes a motor housing 4, a rear housing 6, a spacer housing 8, a side grip 10, a gear housing 12, a bearing box 14, and a wheel cover 16.

As shown in FIG. 2, the motor 18 is housed inside the motor housing 4. The motor 18 has an output shaft 20 extending in the front-rear direction. The output shaft 20 is rotatably supported by the motor housing 4 via a bearing 22.

The rear housing 6 is attached to the rear of the motor housing 4. A power supply circuit 24 is housed inside the rear housing 6. Power is supplied to the power circuit 24 from an external power source via the power cord 26. A slide switch 28 (see FIG. 1) is provided on the left surface of the motor housing 4. When the user operates the slide switch 28 to slide it to the front ON position, power is supplied to the motor 18. The motor 18 rotates the output shaft 20 by the electric power supplied from the power supply circuit 24. When the user operates the slide switch 28 to slide it to the rear OFF position, the power supply to the motor 18 is stopped. Instead of the configuration in which power is supplied to the power tool 2 from an external power source via the power cord 26 as described above, the power tool 2 is detachable from the housing 52 and has a built-in secondary battery such as a lithium ion battery. The power tool 2 may be supplied with electric power from the battery (not shown).

The spacer housing 8 is attached to the front of the motor housing 4. A side grip 10 is attached to the spacer housing 8 via an attachment member 30. When the user uses the power tool 2, the user can stably hold the power tool 2 by gripping the motor housing 4 with one hand and the side grip 10 with the other hand. ..

The gear housing 12 is attached to the front of the spacer housing 8. The gear housing 12 is fixed to the motor housing 4 together with the spacer housing 8 by a screw 32 (see FIG. 1) extending in the front-rear direction. The gear housing 12 rotatably supports the output shaft 20 via a bearing 34. Inside the gear housing 12, a first bevel gear 36 and a second bevel gear 38 arranged so as to mesh with each other are housed. The first bevel gear 36 is fixed to the front end of the output shaft 20. The second bevel gear 38 is fixed to the upper end of the spindle 40 extending in the vertical direction. Hereinafter, the first bevel gear 36 and the second bevel gear 38 are collectively referred to as a bevel gear 42. The bevel gear 42 is a power transmission mechanism that reduces the rotation of the motor 18 and transmits it to the spindle 40. The gear housing 12 holds the upper end of the spindle 40 via a bearing 44. A shaft lock 46 (see FIG. 1) is provided on the upper surface of the gear housing 12. When the user operates the shaft lock 46 and pushes it downward, the rotation of the second bevel gear 38 is prohibited and the rotation of the spindle 40 is prohibited.

The bearing box 14 is attached below the gear housing 12. The bearing box 14 holds the spindle 40 via the bearings 48 and 50. The spindle 40 is rotatable about a rotation axis along the vertical direction with respect to the bearing box 14. A grinding wheel GW can be attached to the vicinity of the lower end of the spindle 40 via the inner flange IF and the outer flange OF. In the power tool 2, when the motor 18 rotates, the grinding wheel GW rotates around the rotation axis together with the spindle 40, so that the workpiece can be ground. The spindle 40 can also be said to be a tip tool holding portion that holds the grinding wheel GW, which is a tip tool. In the following description, the motor housing 4, the rear housing 6, the spacer housing 8, the gear housing 12, and the bearing box 14 are collectively referred to as the housing 52.

A wheel cover 16 is attached to the bearing box 14. The wheel cover 16 is formed so as to cover at least a part of the grinding wheel GW. In this embodiment, the wheel cover 16 is formed so as to cover a portion extending substantially half of the circumference of the grinding wheel GW. When the user uses the power tool 2, the wheel cover 16 is arranged at a position that covers the rear portion of the grinding wheel GW. The wheel cover 16 can prevent the grinding powder from flying from the grinding wheel GW toward the user when the power tool 2 is used.

As shown in FIG. 3, the spacer housing 8 has a cylindrical portion 54 formed in a substantially cylindrical shape, a rear flange 56 protruding radially outward at the rear end of the cylindrical portion 54, and a radial portion at the front end of the cylindrical portion 54. It has a front flange 58 that projects outward. The spacer housing 8 is formed with a guide groove 60 extending in the circumferential direction by the cylindrical portion 54, the rear flange 56, and the front flange 58. The mounting member 30 (see FIG. 4) is rotatably mounted in the guide groove 60 around the rotating shaft SX, which is the central axis of the cylindrical portion 54.

As shown in FIG. 4, the mounting member 30 includes a band portion 62, a first protruding portion 64, and a second protruding portion 66. The band portion 62 has a shape in which a substantially rectangular flat plate is rolled into a substantially cylindrical shape. A first protruding portion 64 that projects outward in the radial direction is formed at the first end portion 62a of the band portion 62. A second protruding portion 66 projecting outward in the radial direction is formed at the second end portion 62b of the band portion 62. The first protruding portion 64 includes a first shaft portion 64a and a first tip portion 64b. The second protruding portion 66 includes a second shaft portion 66a and a second tip portion 66b. When combined, the first shaft portion 64a and the second shaft portion 66a form a substantially cylindrical shape. Male threads are formed on the outer peripheral surfaces of the first shaft portion 64a and the second shaft portion 66a. The first tip portion 64b and the second tip portion 66b form a truncated cone shape when combined.

As shown in FIGS. 5 and 6, the side grip 10 includes a grip portion 68 and an adjusting portion 70. A screw groove 70a and an accommodation space 70b are formed in the adjusting portion 70. Female threads corresponding to the male threads of the first shaft portion 64a and the second shaft portion 66a are formed on the inner peripheral surface of the thread groove 70a. The inner surface of the accommodation space 70b is formed in a truncated cone shape. The angle formed by the truncated cone-shaped generatrix of the accommodation space 70b with respect to the center line is smaller than the angle formed by the truncated cone-shaped generatrix composed of the first tip portion 64b and the second tip portion 66b with respect to the center line. That is, the inclination angle of the truncated cone shape of the accommodation space 70b is smaller than the inclination angle of the truncated cone shape including the first tip portion 64b and the second tip portion 66b.

In the state where the side grip 10 is attached to the attachment member 30, the first shaft portion 64a and the second shaft portion 66a are threaded grooves while the first tip portion 64b and the second tip portion 66b are housed in the accommodation space 70b. It is screwed into 70a. When the side grip 10 is rotated with respect to the mounting member 30 in the direction in which the screw retracts around the rotation axis RX, the side grip 10 moves in the direction away from the band portion 62. As shown in FIG. 5, when the side grip 10 is away from the band portion 62, the first tip portion 64b and the second tip portion 66b each hit the inner surface of the accommodation space 70b due to the elastic restoring force of the band portion 62. It moves to a contacting position, and the first protruding portion 64 and the second protruding portion 66 are separated from each other. Therefore, the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is widened, and the diameter of the band portion 62 is expanded. In this state, a frictional force does not act so much between the band portion 62 and the cylindrical portion 54, and the mounting member 30 can slide in the circumferential direction with respect to the spacer housing 8. Therefore, the mounting position and mounting angle of the side grip 10 with respect to the spacer housing 8 can be adjusted.

When the side grip 10 is rotated with respect to the mounting member 30 in the direction in which the screw advances around the rotation shaft RX, the side grip 10 moves in the direction approaching the band portion 62 as shown in FIG. When the side grip 10 is close to the band portion 62, the first tip portion 64b and the second tip portion 66b are pressed by the inner surfaces of the accommodation space 70b, respectively, and the first protruding portion 64 and the second protruding portion 66 are pressed against each other. Close to each other. Therefore, the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is narrowed, and the diameter of the band portion 62 is reduced. In this state, a strong frictional force acts between the band portion 62 and the cylindrical portion 54, so that the mounting member 30 cannot slide in the circumferential direction with respect to the spacer housing 8. Therefore, the mounting position and mounting angle of the side grip 10 with respect to the spacer housing 8 are fixed.

In the power tool 2 of this embodiment, the side grip 10 can be fixed to the spacer housing 8 at a desired mounting position and mounting angle. For example, as shown in FIG. 1, the side grip 10 can be fixed at the left mounting position of the spacer housing 8 at a mounting angle extending from the spacer housing 8 to the left. Alternatively, as shown in FIG. 7, the side grip 10 can be fixed at the right mounting position of the spacer housing 8 at a mounting angle extending from the spacer housing 8 to the right. Alternatively, as shown in FIG. 8, the side grip 10 can be fixed at the mounting position above the spacer housing 8 at a mounting angle that extends upward toward the spacer housing 8.

In the power tool 2 of this embodiment, the user cannot remove the side grip 10 from the housing 52 without disassembling the side grip 10 and the housing 52. Since a tool must be used to disassemble the side grip 10 and the housing 52, in the power tool 2 of this embodiment, the user cannot remove the side grip 10 from the housing 52 without using a tool. Is. With such a configuration, it is possible to prevent the power tool 2 from being used in a state where the side grip 10 is removed from the housing 52.

In the above embodiment, the first tip portion 64b and the second tip portion 66b form a truncated cone shape when combined, and the inner surface of the accommodation space 70b is a cone composed of the first tip portion 64b and the second tip portion 66b. A configuration having a truncated cone shape with a smaller inclination angle than the trapezoidal shape has been described as an example. The shapes of the first tip portion 64b and the second tip portion 66b and the shape of the inner surface of the accommodation space 70b are not limited to the above, and the inner surface of the accommodation space 70b is the first tip portion 64b and the second tip portion 66b. Any shape may be used as long as the first tip portion 64b and the second tip portion 66b can be switched between a state in which they are separated from each other and a state in which they are close to each other when they move relative to each other. ..

In the above embodiment, the configuration in which the grip portion 68 and the adjusting portion 70 are integrally formed on the side grip 10 has been described, but the grip portion 68 and the adjusting portion 70 may be provided separately. For example, the grip portion 68 is fixed to the band portion 62 at a position away from the first end portion 62a and the second end portion 62b, and the adjusting portion 70 is set to the first end portion 62a and the second end portion 62a and the second end portion 62a separately from the grip portion 68. It may be provided at the end 62b. In this case, by rotating the adjusting portion 70 with respect to the band portion 62, the mounting member 30 can be switched between a slidable state and a non-sliding state with respect to the spacer housing 8.

As described above, the electric tool 2 of the present embodiment includes the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 10 (example of a handle) attached to a housing 52. The side grip 10 is not removable from the housing 52 without the use of tools.

According to the above configuration, since the user cannot remove the side grip 10 without using a tool, it is possible to prevent the power tool 2 from being used with the side grip 10 removed.

The power tool 2 of this embodiment is further attached to the housing 52 so as to be rotatable around the rotation shaft SX with respect to the housing 52, and includes an attachment member 30 for holding the side grip 10. The power tool 2 can be switched between a state in which rotation of the mounting member 30 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

According to the above configuration, the user can freely adjust the mounting position and mounting angle of the side grip 10 with respect to the housing 52, so that the convenience of the user can be improved.

In the power tool 2 of this embodiment, the housing 52 has a cylindrical portion 54 having a rotation shaft SX as a central axis. The mounting member 30 is slidably in contact with the cylindrical portion 54, and includes a band portion 62 (example of a band) having a first end portion 62a and a second end portion 62b. The power tool 2 allows the mounting member 30 to rotate about the rotation shaft SX with respect to the housing 52 when the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is widened. In the power tool 2, when the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is narrowed, the frictional force acting between the band portion 62 and the cylindrical portion 54 causes the mounting member 30 to have the power tool 2. Rotation around the rotation shaft SX with respect to the housing 52 is prohibited.

According to the above configuration, with a simple configuration, it is possible to switch between a state in which rotation of the mounting member 30 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

In the power tool 2 of the present embodiment, the first end portion 62a of the band portion 62 is provided with a first protruding portion 64 that protrudes outward. A second protruding portion 66 that projects outward is provided at the second end portion 62b of the band portion 62. The power tool 2 further includes an adjusting portion 70 (example of an adjusting member) having an accommodating space 70b for accommodating the first projecting portion 64 and the second projecting portion 66. The adjusting portion 70 is attached to the band portion 62 so as to advance and retreat with respect to the band portion 62 by rotating the band portion 62 around the rotation axis RX. When the adjusting portion 70 is in a position retracted with respect to the band portion 62, the first protruding portion 64 and the second protruding portion 66 are separated from each other inside the accommodation space 70b. When the adjusting portion 70 is in a position advanced with respect to the band portion 62, each of the first protruding portion 64 and the second protruding portion 66 abuts on and is pressed against the inner surface of the accommodation space 70b, and the first protruding portion 64 And the second protrusion 66 are close to each other.

According to the above configuration, a state in which the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is widened and the first end portion 62a and the second end of the band portion 62 are widened by a simple configuration. It is possible to switch between the states in which the distance between the portions 62b is narrowed.

In the power tool 2 of this embodiment, the side grip 10 is rotatably held around the rotation shaft RX by the mounting member 30. The adjusting portion 70 is fixed to the side grip 10.

According to the above configuration, by rotating the side grip 10 with respect to the mounting member 30 around the rotation axis RX, the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is widened. And, it is possible to switch between the state where the distance between the first end portion 62a and the second end portion 62b of the band portion 62 is narrowed.

The power tool 2 of this embodiment is connected to the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 10 (example of a handle) attached to a housing 52. The side grip 10 is not removable from the housing 52 without disassembling the housing 52 and / or the side grip 10.

According to the above configuration, the user cannot remove the side grip 10 without disassembling the housing 52 and / or the side grip 10, so that the power tool 2 is used with the side grip 10 removed. It can be suppressed.

The power tool 2 of this embodiment is detachably attached to the housing 52, and may further include a battery (not shown) for supplying electric power to the motor 18.

According to the above configuration, power can be supplied to the motor 18 without connecting to an external power source with the power cord 26.

In the power tool 2 of this embodiment, the grinding wheel GW can be used as the tip tool. The power tool 2 functions as a grinder.

According to the above configuration, it is possible to prevent the power tool 2 functioning as a grinder from being used in a state where the side grip 10 is removed.

In the power tool 2 of this embodiment, the housing 52 includes a motor housing 4 (an example of a grip). The user can use the power tool 2 with one hand holding the motor housing 4 and the other hand holding the side grip 10.

According to the above configuration, when using the power tool 2, the user grips the motor housing 4 with one hand and the side grip 10 with the other hand to stably hold the power tool 2. can do.

(Example 2)
As shown in FIG. 9, the power tool 102 of the present embodiment has substantially the same configuration as the power tool 2 of the first embodiment. Hereinafter, the power tool 102 of this embodiment will be described as being different from the power tool 2 of the first embodiment.

As shown in FIG. 10, in the power tool 102 of this embodiment, a spacer housing 104 is provided between the motor housing 4 and the gear housing 12 instead of the spacer housing 8. The spacer housing 104 includes a cylindrical portion 106 formed in a substantially cylindrical shape. In the power tool 102 of this embodiment, the motor housing 4 is formed with a rear flange 108 that protrudes outward in the radial direction at the rear end of the cylindrical portion 106. Further, in the power tool 102 of the present embodiment, the gear housing 12 is formed with a front flange 110 that protrudes outward in the radial direction at the front end of the cylindrical portion 106. In the power tool 102 of this embodiment, the cylindrical portion 106, the rear flange 108, and the front flange 110 form a guide groove 112 extending in the circumferential direction.

As shown in FIG. 9, in the power tool 102 of this embodiment, the mounting member 114 is mounted on the spacer housing 104 instead of the mounting member 30. The mounting member 114 is rotatably mounted in the guide groove 112 around a rotating shaft SX (see FIGS. 12 and 13), which is the central axis of the cylindrical portion 106 of the spacer housing 104. Further, in the power tool 102 of this embodiment, the side grip 116 is attached to the attachment member 114 instead of the side grip 10.

As shown in FIG. 11, the mounting member 114 includes a band portion 118, a bolt holding portion 120 formed on the first end portion 118a of the band portion 118, and a grip formed on the second end portion 118b of the band portion 118. It includes a mounting portion 122. The inner peripheral surface of the band portion 118 is formed so as to be slidable with respect to the cylindrical portion 106.

As shown in FIG. 12, the bolt holding portion 120 is formed with a fitting portion 126 into which the head portion 124a of the hexagon bolt 124 is fitted and a through hole 128 through which the shaft portion 124b of the hexagon bolt 124 penetrates. The grip mounting portion 122 is formed with a through hole 130 through which the shaft portion 124b of the hexagon bolt 124 penetrates, a receiving hole 132, and a contact portion 134.

The side grip 116 includes a grip portion 136, a flange portion 138, a tubular portion 140, and a fitting portion 142. The collar portion 138 is arranged so as to face the contact portion 134 of the grip mounting portion 122. The tubular portion 140 is inserted into the receiving hole 132 of the grip mounting portion 122. The tubular portion 140 is formed with a through hole 144 through which the shaft portion 124b of the hexagon bolt 124 penetrates. A hexagon nut 146 screwed into the shaft portion 124b of the hexagon bolt 124 is fitted in the fitting portion 142. When the side grip 116 is rotated with respect to the mounting member 114, the head portion 124a of the hexagon bolt 124 is fitted to the fitting portion 126 of the mounting member 114, and the hexagon nut 146 is fitted to the fitting portion 142 of the side grip 116. Since they are fitted, the hexagon nut 146 rotates with respect to the shaft portion 124b of the hexagon bolt 124. A retaining piece 148 is provided at the tip of the shaft portion 124b of the hexagon bolt 124.

As shown in FIG. 12, when the side grip 116 is rotated with respect to the mounting member 114 around the rotation axis RX in the direction in which the hexagon nut 146 retracts with respect to the head 124a of the hexagon bolt 124, the side grip 116 is rotated. It moves in the direction away from the mounting member 114. When the side grip 116 is away from the mounting member 114, the bolt holding portion 120 and the grip mounting portion 122 are moved in a direction away from each other due to the elastic restoring force of the band portion 118, and the diameter of the mounting member 114 is expanded. .. In this state, a frictional force does not act so much between the band portion 118 and the spacer housing 104, and the mounting member 114 can slide in the circumferential direction with respect to the spacer housing 104. Therefore, the mounting position and mounting angle of the side grip 116 with respect to the spacer housing 104 can be adjusted.

As shown in FIG. 13, when the side grip 116 is rotated with respect to the mounting member 114 around the rotation axis RX in the direction in which the hexagon nut 146 advances with respect to the head 124a of the hexagon bolt 124, the side grip 116 is rotated. It moves in the direction approaching the mounting member 114. At this time, since the flange portion 138 of the side grip 116 abuts and presses against the abutting portion 134 of the mounting member 114, the bolt holding portion 120 and the grip mounting portion 122 move in a direction approaching each other, and the mounting member 114 contracts. Be diametered. In this state, a strong frictional force acts between the band portion 118 and the spacer housing 104, so that the mounting member 114 cannot slide with respect to the spacer housing 104 in the circumferential direction. Therefore, the mounting position and mounting angle of the side grip 116 with respect to the spacer housing 104 are fixed.

In the power tool 102 of this embodiment, the side grip 116 can be fixed to the spacer housing 104 at a desired mounting position and mounting angle. For example, as shown in FIG. 9, the side grip 116 can be fixed at the mounting position above the spacer housing 104 at a mounting angle extending to the left from the spacer housing 104. Alternatively, as shown in FIG. 14, the side grip 116 can be fixed at the right mounting position of the spacer housing 104 at a mounting angle extending upward from the spacer housing 104.

In the power tool 102 of this embodiment, the user cannot remove the side grip 116 from the housing 52 without disassembling the side grip 116 and the housing 52. Since a tool must be used to disassemble the side grip 116 and the housing 52, in the power tool 102 of this embodiment, the user cannot remove the side grip 116 from the housing 52 without using a tool. Is. With such a configuration, it is possible to prevent the power tool 102 from being used with the side grip 116 removed from the housing 52.

In the above embodiment, the configuration in which the grip portion 136, the collar portion 138, the tubular portion 140, and the fitting portion 142 are integrally formed on the side grip 116 has been described, but only the grip portion 68 is separated. The member may be fixed to the band portion 118 at a position away from the first end portion 118a and the second end portion 118b, and the other portion may be provided on the grip mounting portion 122 as an adjusting member. In this case, by rotating the adjusting member with respect to the mounting member 114, the mounting member 114 can be switched between a slidable state and a non-sliding state with respect to the spacer housing 104.

As described above, the electric tool 102 of the present embodiment includes the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 116 (example of a handle) attached to a housing 52. The side grip 116 is not removable from the housing 52 without the use of tools.

According to the above configuration, since the user cannot remove the side grip 116 without using a tool, it is possible to prevent the power tool 102 from being used with the side grip 116 removed.

The power tool 102 of this embodiment is further attached to the housing 52 so as to be rotatable around the rotation shaft SX with respect to the housing 52, and includes an attachment member 114 for holding the side grip 116. The power tool 102 can be switched between a state in which rotation of the mounting member 114 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

According to the above configuration, the user can freely adjust the mounting position and mounting angle of the side grip 116 with respect to the housing 52, so that the convenience of the user can be improved.

In one or more embodiments, the housing 52 has a cylindrical portion 106 centered on a rotating shaft SX. The mounting member 114 is slidably in contact with the cylindrical portion 106, and includes a band portion 118 (example of a band) having a first end portion 118a and a second end portion 118b. The power tool 102 allows the mounting member 114 to rotate about the rotation shaft SX with respect to the housing 52 when the distance between the first end portion 118a and the second end portion 118b of the band portion 118 is widened. In the power tool 102, when the distance between the first end portion 118a and the second end portion 118b of the band portion 118 is narrowed, the frictional force acting between the band portion 118 and the cylindrical portion 106 causes the mounting member 114 to have the power tool 102. Rotation around the rotation shaft SX with respect to the housing 52 is prohibited.

According to the above configuration, with a simple configuration, it is possible to switch between a state in which rotation of the mounting member 114 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

In the power tool 102 of this embodiment, a bolt holding portion 120 (example of the first protruding portion) that protrudes outward is provided at the first end portion 118a of the band portion 118. A grip mounting portion 122 (example of the second protruding portion) that protrudes outward is provided at the second end portion 118b of the band portion 118. The power tool 102 further includes a hexagon bolt 124 (example of a bolt) having a head portion 124a and a shaft portion 124b, and a hexagon nut 146 (an example of a nut) screwed into the shaft portion 124b of the hexagon bolt 124. The shaft portion 124b of the hexagon bolt 124 penetrates the bolt holding portion 120 and the grip mounting portion 122. The bolt holding portion 120 and the grip mounting portion 122 are arranged between the head portion 124a of the hexagon bolt 124 and the hexagon nut 146. When the hexagon nut 146 is in a position retracted with respect to the head 124a of the hexagon bolt 124, the bolt holding portion 120 and the grip mounting portion 122 are separated from each other. When the hexagon nut 146 is in a position advanced with respect to the head 124a of the hexagon bolt 124, the bolt holding portion 120 and the grip mounting portion 122 are sandwiched between the head 124a of the hexagon bolt 124 and the hexagon nut 146 to hold the bolt. The portion 120 and the grip mounting portion 122 are close to each other.

According to the above configuration, with a simple configuration, the distance between the first end 118a and the second end 118b of the band 118 is widened, and the first end 118a and the second end of the band 118 are widened. It is possible to switch between the states in which the distance between the portions 118b is narrowed.

In the power tool 102 of this embodiment, the side grip 116 is rotatably held by the mounting member 114 around the shaft portion 124b of the hexagon bolt 124. The head 124a of the hexagon bolt 124 is fixed to the mounting member 114. The hex nut 146 is fixed to the side grip 116.

According to the above configuration, by rotating the side grip 116 with respect to the mounting member 114 around the rotation shaft RX along the shaft portion 124b of the hexagon bolt 124, the first end portions 118a and the second portion 118a of the band portion 118 are rotated. It is possible to switch between a state in which the distance between the end portions 118b is widened and a state in which the distance between the first end portion 118a and the second end portion 118b of the band portion 118 is narrowed.

The power tool 102 of this embodiment is connected to the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 116 (example of a handle) attached to a housing 52. The side grip 116 cannot be removed from the housing 52 without disassembling the housing 52 and / or the side grip 116.

According to the above configuration, the user cannot remove the side grip 116 without disassembling the housing 52 and / or the side grip 116, so that the power tool 102 is used with the side grip 116 removed. It can be suppressed.

The power tool 102 of this embodiment is detachably attached to the housing 52, and may further include a battery (not shown) that supplies power to the motor 18.

According to the above configuration, power can be supplied to the motor 18 without connecting to an external power source with the power cord 26.

In the power tool 102 of this embodiment, the grinding wheel GW can be used as the tip tool. The power tool 102 functions as a grinder.

According to the above configuration, it is possible to prevent the power tool 102 functioning as a grinder from being used in a state where the side grip 116 is removed.

In the power tool 102 of this embodiment, the housing 52 includes a motor housing 4 (an example of a grip). The user can use the power tool 102 with one hand holding the motor housing 4 and the other hand holding the side grip 116.

According to the above configuration, when using the power tool 102, the user grips the motor housing 4 with one hand and the side grip 116 with the other hand to stably hold the power tool 102. can do.

(Example 3)
As shown in FIG. 15, the power tool 202 of the present embodiment has substantially the same configuration as the power tool 2 of the first embodiment. Hereinafter, the power tool 202 of this embodiment will be described as being different from the power tool 2 of the first embodiment.

As shown in FIG. 16, in the power tool 202 of this embodiment, a spacer housing 204 is provided between the motor housing 4 and the gear housing 12 instead of the spacer housing 8. The spacer housing 204 includes a cylindrical portion 206 formed in a substantially cylindrical shape. In the power tool 202 of this embodiment, the motor housing 4 is formed with a rear flange 208 that protrudes outward in the radial direction at the rear end of the cylindrical portion 206. Further, in the power tool 202 of the present embodiment, the gear housing 12 is formed with a front flange 210 projecting outward in the radial direction at the front end of the cylindrical portion 206. In the power tool 202 of this embodiment, the cylindrical portion 206, the rear flange 208, and the front flange 210 form a guide groove 212 extending along the circumferential direction.

As shown in FIG. 15, in the power tool 202 of this embodiment, the mounting member 214 is mounted on the spacer housing 204 instead of the mounting member 30. The mounting member 214 is rotatably mounted in the guide groove 212 around a rotating shaft SX (see FIGS. 18 and 19), which is the central axis of the cylindrical portion 206 of the spacer housing 204. Further, in the power tool 202 of this embodiment, the side grip 216 is attached to the attachment member 214 instead of the side grip 10.

As shown in FIG. 17, the mounting member 214 includes a band 218 and a band holding member 220. As shown in FIG. 18, the band 218 has a shape in which the first end portion 218a and the second end portion 218b of a substantially rectangular flat plate are overlapped and joined. The peripheral length of the band 218 is larger than the peripheral length of the cylindrical portion 206 of the spacer housing 204. A through hole 218c is formed in the first end portion 218a of the band 218, and a through hole 218d is formed in the second end portion 218b of the band 218. The band holding member 220 includes a case 222, a bolt 224, and a holder 226. As shown in FIG. 17, the case 222 has a box shape that opens toward the spacer housing 204. The opening edge 222a of the case 222 has a shape that slidably contacts the front flange 210 of the gear housing 12. The opening edge 222b of the case 222 has a shape that slidably contacts the rear flange 208 of the motor housing 4. As shown in FIG. 18, a through hole 222d is formed in the bottom plate 222c of the case 222. The holder 226 is housed in the case 222 so that it cannot rotate with respect to the case 222. A through hole 226a is formed in the holder 226. The head portion 224a of the bolt 224 is fixed to the holder 226, and the shaft portion 224b penetrates the through hole 226a of the holder 226, the through hole 218c and 218d of the band 218, and the through hole 222d of the case 222.

The side grip 216 includes a grip portion 228, a collar portion 230, and a fitting portion 232. The collar portion 230 is arranged so as to face the bottom plate 222c of the case 222. A hexagon nut 234 screwed into the shaft portion 224b of the bolt 224 is fitted in the fitting portion 232. When the side grip 216 is rotated with respect to the case 222, the head 224a of the bolt 224 cannot rotate with respect to the case 222, and the hexagon nut 234 is fitted to the fitting portion 232 of the side grip 216. The hex nut 234 rotates with respect to the shaft portion 224b of the bolt 224. A retaining piece 236 is provided at the tip of the shaft portion 224b of the bolt 224.

As shown in FIG. 18, when the side grip 216 is rotated with respect to the case 222 around the rotation axis RX in the direction in which the hexagon nut 234 retracts with respect to the head 224a of the bolt 224, the side grip 216 becomes the case 222. Move away from. When the side grip 216 is away from the case 222, the holder 226 is close to the spacer housing 204 and not so much tension acts on the band 218, so that much frictional force acts between the band 218 and the spacer housing 204. Instead, the mounting member 214 can slide in the circumferential direction with respect to the spacer housing 204. Therefore, the mounting position and mounting angle of the side grip 216 with respect to the spacer housing 204 can be adjusted.

As shown in FIG. 19, when the side grip 216 is rotated with respect to the case 222 in the direction in which the hexagon nut 234 advances with respect to the head 224a of the bolt 224 around the rotation axis RX, the side grip 216 becomes the case 222. Move in the direction of approaching. At this time, the flange portion 230 of the side grip 216 abuts on the bottom plate 222c of the case 222, and the holder 226 moves to a position far from the spacer housing 204 together with the head 224a of the bolt 224, and a large tension acts on the band 218. Therefore, a strong frictional force acts between the band 218 and the spacer housing 204, and the mounting member 214 cannot slide in the circumferential direction with respect to the spacer housing 204. Therefore, the mounting position and mounting angle of the side grip 216 with respect to the spacer housing 204 are fixed.

In the power tool 202 of this embodiment, the side grip 216 can be fixed to the spacer housing 204 at a desired mounting position and mounting angle. For example, as shown in FIG. 15, the side grip 216 can be fixed at the left mounting position of the spacer housing 204 at a mounting angle extending to the left from the spacer housing 204. Alternatively, as shown in FIG. 20, the side grip 216 can be fixed at the right mounting position of the spacer housing 204 at a mounting angle extending to the right from the spacer housing 204. Alternatively, as shown in FIG. 21, the side grip 216 can be fixed at the mounting position above the spacer housing 204 at a mounting angle extending upward from the spacer housing 204.

In the power tool 202 of this embodiment, the user cannot remove the side grip 216 from the housing 52 without disassembling the side grip 216 and the housing 52. Since a tool must be used to disassemble the side grip 216 and the housing 52, in the power tool 202 of this embodiment, the user cannot remove the side grip 216 from the housing 52 without using a tool. Is. With such a configuration, it is possible to prevent the power tool 202 from being used in a state where the side grip 216 is removed from the housing 52.

In the above embodiment, the band 218 has been described in which the first end portion 218a and the second end portion 218b are overlapped and joined, but the first end portion 218a and the second end portion 218b are overlapped and joined to each other. It does not have to be. In this case, for example, by fixing the first end portion 218a to a part of the holder 226 and fixing the second end portion 218b to the other part of the holder 226, the same operation as described above can be performed.

In the above embodiment, the configuration in which the grip portion 228, the collar portion 230, and the fitting portion 232 are integrally formed on the side grip 216 has been described, but only the grip portion 228 is used as a separate member. It may be fixed to the band 218 at a position away from the first end portion 218a and the second end portion 218b, and the other portion may be provided on the band holding member 220 as an adjusting member. In this case, by rotating the adjusting member with respect to the band holding member 220, the mounting member 214 can be switched between a slidable state and a non-sliding state with respect to the spacer housing 204.

As described above, the electric tool 202 of the present embodiment includes the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 216 (example of a handle) attached to a housing 52. The side grip 216 is not removable from the housing 52 without the use of tools.

According to the above configuration, since the user cannot remove the side grip 216 without using a tool, it is possible to prevent the power tool 202 from being used with the side grip 216 removed.

The power tool 202 of this embodiment is further attached to the housing 52 so as to be rotatable around the rotation shaft SX with respect to the housing 52, and includes an attachment member 214 for holding the side grip 216. The power tool 202 can be switched between a state in which rotation of the mounting member 214 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

According to the above configuration, the user can freely adjust the mounting position and mounting angle of the side grip 216 with respect to the housing 52, so that the convenience of the user can be improved.

In the power tool 202 of this embodiment, the housing 52 has a cylindrical portion 206 having a rotation shaft SX as a central axis. The mounting member 214 is slidably abutted against the cylindrical portion 206 and has a first end portion 218a, a band 218 having a second end portion 218b, and a first end portion 218a and a second end of the band 218. It holds a portion 218b and includes a holder 226 (example of a movable member) whose position from the housing 52 in a direction orthogonal to the rotation axis SX can be adjusted. The power tool 202 allows the mounting member 214 to rotate about the rotation shaft SX with respect to the housing 52 when the holder 226 is located close to the housing 52. When the holder 226 is located far from the housing 52, the power tool 202 prohibits the mounting member 214 from rotating around the rotation shaft SX with respect to the housing 52 due to the frictional force acting between the band 218 and the cylindrical portion 206. To do.

According to the above configuration, with a simple configuration, it is possible to switch between a state in which rotation of the mounting member 214 with respect to the housing 52 around the rotation shaft SX is permitted and a state in which rotation is prohibited.

In the power tool 202 of the present embodiment, the mounting member 214 is further fixed in position from the housing 52 in the direction orthogonal to the rotation axis SX, and the bottom plate 222c (located away from the housing 52 than the holder 226) ( (Example of base member) is provided. The power tool 202 further includes a bolt 224 having a head 224a and a shaft portion 224b, and a hexagon nut 234 (an example of a nut) screwed onto the shaft portion 224b of the bolt 224. The shaft portion 224b of the bolt 224 penetrates the holder 226 and the bottom plate 222c. The holder 226 and the bottom plate 222c are arranged between the head 224a of the bolt 224 and the hexagon nut 234. When the hexagon nut 234 is in a position retracted with respect to the head portion 224a of the bolt 224, the holder 226 separates from the bottom plate 222c. When the hexagon nut 234 is in a position advanced with respect to the head 224a of the bolt 224, the holder 226 and the bottom plate 222c are sandwiched between the head 224a of the bolt 224 and the hexagon nut 234, and the holder 226 is close to the bottom plate 222c. ..

According to the above configuration, the holder 226 is separated from the bottom plate 222c, that is, the holder 226 is close to the housing 52, and the holder 226 is close to the bottom plate 222c, that is, the holder 226 is formed by a simple configuration. It is possible to switch between the states far from the housing 52.

In the power tool 202 of this embodiment, the side grip 216 is rotatably held around the shaft portion 224b of the bolt 224 by the mounting member 214. The head 224a of the bolt 224 is fixed to the holder 226. The hex nut 234 is fixed to the side grip 216.

According to the above configuration, by rotating the side grip 216 with respect to the mounting member 214 around the rotation shaft RX along the shaft portion 224b of the bolt 224, the holder 226 is separated from the bottom plate 222c, that is, the holder 226. Can be switched between a state in which the holder 226 is close to the housing 52 and a state in which the holder 226 is close to the bottom plate 222c, that is, a state in which the holder 226 is located far from the housing 52.

The power tool 202 of this embodiment is connected to the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is provided with a spindle 40 (example of a tip tool holding portion) to which a grinding wheel GW (example of a tip tool) can be attached and detached, and a side grip 216 (example of a handle) attached to a housing 52. The side grip 216 cannot be removed from the housing 52 without disassembling the housing 52 and / or the side grip 216.

According to the above configuration, since the user cannot remove the side grip 216 without disassembling the housing 52 and / or the side grip 216, the power tool 202 is used with the side grip 216 removed. It can be suppressed.

The power tool 202 of this embodiment is detachably attached to the housing 52, and may further include a battery (not shown) that supplies power to the motor 18.

According to the above configuration, power can be supplied to the motor 18 without connecting to an external power source with the power cord 26.

In the power tool 202 of this embodiment, the grinding wheel GW can be used as the tip tool. The power tool 202 functions as a grinder.

According to the above configuration, it is possible to prevent the power tool 202 functioning as a grinder from being used in a state where the side grip 216 is removed.

In the power tool 202 of this embodiment, the housing 52 includes a motor housing 4 (an example of a grip). The user can use the power tool 202 with one hand holding the motor housing 4 and the other hand holding the side grip 216.

According to the above configuration, when using the power tool 202, the user grips the motor housing 4 with one hand and the side grip 216 with the other hand to stably hold the power tool 202. can do.

(Example 4)
As shown in FIG. 22, the power tool 302 of the present embodiment has substantially the same configuration as the power tool 2 of the first embodiment. Hereinafter, the power tool 302 of this embodiment will be described as being different from the power tool 2 of the first embodiment.

In the power tool 302 of this embodiment, the spacer housing 304 is provided between the motor housing 4 and the gear housing 12 instead of the spacer housing 8. Further, the power tool 302 of this embodiment includes a side grip 306 instead of the side grip 10.

As shown in FIG. 23, in the power tool 302 of this embodiment, the side grip 306 is integrally formed with the spacer housing 304. Therefore, the user cannot remove the side grip 306 from the housing 52. With such a configuration, it is possible to prevent the power tool 302 from being used in a state where the side grip 306 is removed from the housing 52.

As described above, the electric tool 302 of the present embodiment includes the motor 18, the bevel gear 42 (example of the power transmission mechanism) connected to the motor 18, the housing 52 accommodating the motor 18 and the bevel gear 42, and the bevel gear 42. It is equipped with a spindle 40 (example of a tip tool holding part) that is connected and can attach and detach a grinding wheel GW (example of a tip tool), and a side grip 306 (example of a handle) integrally formed with a housing 52. There is.

According to the above configuration, since the user cannot remove the side grip 306 from the housing 52, it is possible to prevent the power tool 302 from being used with the side grip 306 removed.

The power tool 302 of this embodiment is detachably attached to the housing 52, and may further include a battery (not shown) that supplies power to the motor 18.

According to the above configuration, power can be supplied to the motor 18 without connecting to an external power source with the power cord 26.

In the power tool 302 of this embodiment, the grinding wheel GW can be used as the tip tool. The power tool 302 functions as a grinder.

According to the above configuration, it is possible to prevent the power tool 302 functioning as a grinder from being used in a state where the side grip 306 is removed.

In the power tool 302 of this embodiment, the housing 52 includes a motor housing 4 (an example of a grip). The user can use the power tool 302 with one hand holding the motor housing 4 and the other hand holding the side grip 306.

According to the above configuration, when using the power tool 302, the user grips the motor housing 4 with one hand and the side grip 306 with the other hand to stably hold the power tool 302. can do.

(Modification example)
In the above embodiment, the power tools 2, 102, 202, 302 are grinders, the power transmission mechanism is a bevel gear 42, the tip tool is a grinding wheel GW, the tip tool holding portion is a spindle 40, and the grip is The case where the motor housing 4 is used and the handles are the side grips 10,116,216, 306 has been described. Unlike this, the power tools 2, 102, 202, 302 may be other types of power tools such as a driver drill and a hammer drill. Further, the power transmission mechanism may be another type of power transmission mechanism, the tip tool may be another type of tip tool, and the tip tool holding portion is another type of tip tool holding portion. The grip may be another type of grip, and the handle may be another type of handle.

2: Power tool 4: Motor housing 6: Rear housing 8: Spacer housing 10: Side grip 12: Gear housing 14: Bearing box 16: Wheel cover 18: Motor 20: Output shaft 22: Bearing 24: Power supply circuit 26: Power cord 28: Slide switch 30: Mounting member 32: Screw 34: Bearing 36: First bevel gear 38: Second bevel gear 40: Spindle 42: Bevel gear 44: Bearing 46: Shaft lock 48: Bearing 50: Bearing 52: Housing 54: Cylindrical part 56: Rear flange 58: Front flange 60: Guide groove 62: Band portion 62a: First end portion 62b: Second end portion 64: First protruding portion 64a: First shaft portion 64b: First tip portion 66: Second Protruding portion 66a: Second shaft portion 66b: Second tip portion 68: Gripping portion 70: Adjusting portion 70a: Thread groove 70b: Accommodating space 102: Electric tool 104: Spacer housing 106: Cylindrical portion 108: Rear flange 110: Front flange 112: Guide groove 114: Mounting member 116: Side grip 118: Band portion 118a: First end portion 118b: Second end portion 120: Bolt holding portion 122: Grip mounting portion 124: Hexagon bolt 124a: Head portion 124b: Shaft portion 126: Fitting part 128: Through hole 130: Through hole 132: Receiving hole 134: Contact part 136: Gripping part 138: Flange part 140: Tube part 142: Fitting part 144: Through hole 146: Hexagon nut 148: Pulling out Stop piece 202: Power tool 204: Spacer housing 206: Cylindrical part 208: Rear flange 210: Front flange 212: Guide groove 214: Mounting member 216: Side grip 218: Band 218a: First end part 218b: Second end part 218c : Through hole 218d: Through hole 220: Band holding member 222: Case 222a: Opening edge 222b: Opening edge 222c: Bottom plate 222d: Through hole 224: Bolt 224a: Head 224b: Shaft 226: Holder 226a: Through hole 228: Grip part 230: Flange part 232: Fitting part 234: Hexagon nut 236: Retaining piece 302: Electric tool 304: Spacer housing 306: Side grip

Claims (15)

With the motor
The power transmission mechanism connected to the motor and
A housing that houses the motor and the power transmission mechanism,
A tip tool holder that is connected to the power transmission mechanism and allows the tip tool to be attached and detached.
It has a handle attached to the housing
A power tool whose handle is not removable from the housing without the use of a tool. The power tool is further attached to the housing so as to be rotatable about a rotation axis with respect to the housing, and includes an attachment member for holding the handle.
The power tool according to claim 1, which can be switched between a state in which rotation of the mounting member with respect to the housing is permitted and a state in which rotation around the rotation axis is prohibited. The housing has a cylindrical portion having the rotation axis as a central axis.
The mounting member is slidably abutted against the cylindrical portion, and includes a band having a first end portion and a second end portion.
When the distance between the first end and the second end of the band is widened, the mounting member is allowed to rotate about the rotation axis with respect to the housing.
When the distance between the first end portion and the second end portion of the band is narrowed, the frictional force acting between the band and the cylindrical portion causes the rotation shaft of the mounting member with respect to the housing. The power tool of claim 2, which prohibits rotation around. A first protruding portion that protrudes outward is provided at the first end portion of the band.
A second protruding portion that protrudes outward is provided at the second end portion of the band.
The power tool further comprises an adjusting member having a storage space for accommodating the first protrusion and the second protrusion.
The adjusting member is attached to the band so as to advance and retreat with respect to the band by rotating the band around a rotation axis.
When the adjusting member is in a position retracted with respect to the band, the first protruding portion and the second protruding portion are separated from each other inside the accommodation space.
When the adjusting member is in a position advanced with respect to the band, each of the first protruding portion and the second protruding portion abuts on the inner surface of the accommodating space and is pressed against the first protruding portion. The power tool according to claim 3, wherein the second protrusions are close to each other. The handle is rotatably held by the mounting member around the axis of rotation.
The power tool according to claim 4, wherein the adjusting member is fixed to the handle. A first protruding portion that protrudes outward is provided at the first end portion of the band.
A second protruding portion that protrudes outward is provided at the second end portion of the band.
The power tool further comprises a bolt having a head and a shaft and a nut screwed onto the shaft of the bolt.
The shaft portion of the bolt penetrates the first protruding portion and the second protruding portion.
The first protrusion and the second protrusion are arranged between the head of the bolt and the nut.
When the nut is in a position retracted with respect to the head of the bolt, the first protruding portion and the second protruding portion are separated from each other.
When the nut is in a position advanced with respect to the head of the bolt, the first protrusion and the second protrusion are sandwiched between the head of the bolt and the nut, and the first protrusion The power tool according to claim 3, wherein the portion and the second protruding portion are close to each other. The handle is rotatably held by the mounting member around the shaft of the bolt.
One of the head of the bolt and one of the nuts is fixed to the mounting member.
The power tool of claim 6, wherein the head of the bolt and the other of the nut are fixed to the handle. The housing has a cylindrical portion having the rotation axis as a central axis.
The mounting member
A band that is slidably abutted against the cylindrical portion and has a first end portion and a second end portion,
It holds the first end and the second end of the band, and includes a movable member whose position from the housing in a direction orthogonal to the rotation axis can be adjusted.
When the movable member is located close to the housing, the mounting member is allowed to rotate about the rotation axis with respect to the housing.
Claim that when the movable member is located at a position far from the housing, the frictional force acting between the band and the cylindrical portion prohibits the rotation of the mounting member with respect to the housing around the rotation axis. 2 power tools. Further, the mounting member has a fixed position from the housing in a direction orthogonal to the rotation axis, and includes a base member arranged farther from the housing than the holding member.
The power tool further comprises a bolt having a head and a shaft and a nut screwed onto the shaft of the bolt.
The shaft portion of the bolt penetrates the movable member and the base member.
The movable member and the base member are arranged between the head of the bolt and the nut.
When the nut is in a position retracted with respect to the head of the bolt, the movable member is separated from the base member.
When the nut is in a position advanced with respect to the head of the bolt, the movable member and the base member are sandwiched between the head of the bolt and the nut, and the movable member becomes the base member. The power tool of claim 8 in close proximity. The handle is rotatably held by the mounting member around the shaft of the bolt.
One of the head of the bolt and the nut is fixed to the movable member.
The power tool of claim 9, wherein the head of the bolt and the other of the nut are fixed to the handle. With the motor
The power transmission mechanism connected to the motor and
A housing that houses the motor and the power transmission mechanism,
A tip tool holder that is connected to the power transmission mechanism and allows the tip tool to be attached and detached.
It has a handle attached to the housing
A power tool in which the handle is not removable from the housing without disassembling the housing and / or the handle. With the motor
The power transmission mechanism connected to the motor and
A housing that houses the motor and the power transmission mechanism,
A tip tool holder that is connected to the power transmission mechanism and allows the tip tool to be attached and detached.
A power tool with a handle integrally formed with the housing. The power tool according to any one of claims 1 to 12, further comprising a battery that is detachably attached to the housing and supplies power to the motor. The power tool according to any one of claims 1 to 13, which can use a grinding wheel as the tip tool and functions as a grinder. The housing has a grip
The power tool according to any one of claims 1 to 14, wherein the power tool can be used in a state where the user holds the grip with one hand and holds the handle with the other hand.

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