JP7218800B2 - power tools - Google Patents

Description

The present invention relates to power tools.

2. Description of the Related Art Conventionally, power tools have been widely used for polishing, cutting, cutting, etc. by driving a tip tool with the driving force of a motor.

As an example of such a power tool, Patent Document 1 discloses an electric power tool having a motor and a tip tool holding portion configured to be driven by receiving a driving force from the motor and to attach and detach a tip tool (such as a bit). A tool is disclosed. The power tool disclosed in Patent Document 1 is configured such that the tip tool can be held in the power tool main body. Specifically, the power tool disclosed in Patent Document 1 is provided with a tool holding portion that is integrally formed with the power tool body and has an opening, and the tip tool is press-fitted into the opening to hold the tip tool. It is configured so that it can be held.

Moreover, in general, such a power tool is provided with a replacement tool (wrench, etc.) for attaching/detaching (exchanging) the tip tool according to the contents of the work. When the content of work is diverse, it is necessary to frequently use the replacement tool to attach and detach the tip tool to and from the tip tool holder. There is a need to improve the convenience of For example, similarly to the configuration in which the power tool described in Patent Document 1 holds the tip tool, a tool holding portion formed integrally with the power tool body and having an opening is provided, and the replacement tool is press-fitted into the opening. It is conceivable to hold the replacement tool by fitting the

JP-A-2003-39345

However, as described above, the tip tool or the replacement tool (in the following description, the tip tool and the replacement tool are collectively referred to as "tool") are attached to the tool holding portion integrally formed with the power tool body. There is a possibility that the fitting portion may be deteriorated by repeatedly press-fitting or fitting using the elastic deformation of the tool holding portion itself. For this reason, the holding performance of the tool holding portion is impaired, and there is a possibility that the tool may fall out of the tool holding portion unintentionally. In addition, since the tool holding portion is open, there is a possibility that the tool may unintentionally fall out of the tool holding portion due to vibration during work.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a power tool capable of preventing the tool from falling out of the power tool body unintentionally by the operator.

In order to solve the above problems, the present invention includes a motor, a housing that accommodates the motor, and a tool holding portion provided in the housing and capable of holding a tool, wherein the tool is held in the tool holding portion. The tool holding portion has a first shaft portion having an axis extending in a first direction and a second shaft portion having an axis extending in a second direction in a held state, and the tool holding portion holds the tool with respect to the housing. a first holding portion that accommodates at least a portion of the first shaft portion by relatively moving in the first direction; and a second holding portion configured to be capable of holding the tool in cooperation with the first holding portion. and the second holding portion is an elastic body separate from the housing, and in a state in which the tool is held by the tool holding portion, the The power tool is characterized in that the shaft center and the second holding portion are configured to overlap each other.

According to the power tool having the configuration described above, since the axial center of the second shaft portion of the tool and the second holding portion overlap when viewed in the first direction, the tool such as the tip tool or the replacement tool can be used as the second tool. The movement of the tool in the first direction is restricted by the second holding part in a state where the movement in the direction perpendicular to the one direction is restricted by the first holding part. Therefore, even if the power tool main body vibrates during operation, it is possible to prevent the tool from falling off from the tool holding portion.

The present invention further includes a motor, a housing that accommodates the motor, and a tool holding section that is provided in the housing and capable of holding a tool, and the tool is held by the tool holding section. It has a shaft portion extending in a predetermined direction, and at least part of the tool holding portion cooperates with at least part of the tool holding portion or with the housing to hold the tool in the tool holding portion. and the tool holding portion surrounding at least a part of the shaft portion over the entire circumferential direction, and the tool holding portion is configured to be movable relative to the housing.

According to the power tool configured as described above, the tool holding portion surrounds a part of the shaft portion in the entire circumferential direction only with the tool holding portion or in cooperation with the housing, so that the tool does not come off from the tool holding portion. It is possible to suppress the storage. Moreover, since at least a part of the tool holding portion is configured to be relatively movable with respect to the housing, the tool can be easily attached to and detached from the tool holding portion.

In the above configuration, the shaft portion has a first shaft portion having an axis extending in a first direction and a second shaft portion having an axis extending in a second direction when held by the tool holding portion, The tool holding portion is provided at a position different from that of the first holding portion, and is configured to extend at least a portion of the shaft portion over the entire circumferential direction when the tool is held by the tool holding portion. a second holding portion that surrounds and holds the tool in cooperation with the first holding portion, and the tool is held by relatively moving the first holding portion and the tool in the first direction. It is preferable to be configured so that it can be held by the first holding portion.

According to such a configuration, the tool can be easily attached to and detached from the tool holding portion by relatively moving the first holding portion and the tool.

Further, the first holding portion allows movement of the tool in the first direction with respect to the housing in a state in which the tool is held by the tool holding portion, and allows movement of the tool about the axis of the first shaft portion. The second holding portion restricts movement of the tool in the first direction with respect to the housing when the tool is positioned on the first holding portion. , preferably configured to restrict rotation of the tool about the axis of the first shaft portion.

According to such a configuration, in a state where the tool is held by the tool holding portion, it is possible to prevent the tool from rotating within the tool holding portion and falling off from the tool holding portion.

It is preferable that the tool can be held by the second holding portion by moving the second holding portion relative to the housing in the second direction.

According to such a configuration, the tool is held by the first holding portion by moving the tool in the first direction, while the tool is second held by relatively moving in the second direction different from the first direction. Since the tool can be held by the part, it is possible to suitably prevent the tool from falling off from the power tool main body.

Further, the first holding portion is configured in a cylindrical shape into which the first shaft portion can be inserted, and the second holding portion holds the first shaft portion in a state where the first shaft portion is inserted into the first holding portion. and a retracted position, wherein the holding position is defined by movement of the tool with respect to the housing in the first direction and rotation about the axis of the first shaft portion. can be regulated, and the retracted position is preferably a position spaced apart from the second shaft portion.

According to such a configuration, since the second holding portion can move between the holding position and the retracted position while the tool is inserted in the first holding portion, the tool can be easily moved to the tool holding portion. Detachable.

Further, the housing is provided with a projection, the second holding portion is provided separately from the housing, and the second holding portion is open in a projecting direction of the projection and receives and fixes the projection. and a holding portion having a second opening that opens in the protruding direction and receives at least part of the second shaft portion.

According to such a configuration, the second holding portion provided separately from the housing can be easily fixed to the housing.

Moreover, it is preferable that the second holding portion is movable with respect to the housing between the holding position and the retracted position by its own elastic force or by receiving a biasing force from the outside.

With such a configuration, the second holding portion can move between the holding position and the retracted position with a simple configuration.

Moreover, it is preferable that the first opening and the second opening are opened in the same direction.

With such a configuration, the opening can be easily formed in the second holding portion, and the manufacturing cost of the tool holding portion can be reduced.

Further, it is preferable that a direction in which the second opening opens at the holding position and a direction in which the second opening opens at the retracted position are different from each other.

According to such a configuration, by changing the opening direction of the second holding portion, it becomes possible to change the direction in which the relative movement of the second holding portion with respect to the tool is restricted, and the attachment and detachment of the tool becomes easy.

The housing further comprises an end tool attaching/detaching portion supported by the housing to which a tip tool is attachable/detachable, and the tool is a replacement for attaching/detaching the tip tool or the tip tool to/from the tip tool attaching/detaching portion. Preferably at least one of the tools.

According to such a configuration, by using the tool holding portion, it is possible to prevent at least one of the tip tool and the replacement tool from falling off from the power tool main body.

The housing further comprises an end tool attaching/detaching portion supported by the housing to which a tip tool is attachable/detachable, and the tool is a replacement for attaching/detaching the tip tool or the tip tool to/from the tip tool attaching/detaching portion. at least one of the tools, wherein the tip tool has a first tip tool axis and a second tip tool axis extending in different directions, and the replacement tool has a first replacement tool axis extending in each different direction and a second replacement tool shaft, wherein the first holding portion is configured to be able to hold at least one of the first tip tool shaft and the first replacement tool shaft; Preferably, the part is configured to be able to hold at least one of the second tip tool shaft and the second replacement tool shaft.

With such a configuration, it is possible to prevent at least one of the tip tool and the replacement tool from falling off from the power tool body.

The present invention further comprises a motor, a housing that houses the motor, and a tool holding section provided in the housing and capable of holding a tool having at least a portion formed in the shape of a shaft, wherein the tool holding section is and a first holding portion and a second holding portion capable of holding the tool, and in a state in which the tool is held by the tool holding portion, at least a portion of the first holding portion extends in the first direction. It overlaps with the axis of the shaft-like portion of the tool, and at least a portion of the second holding portion is configured to overlap with the axis in a second direction that intersects with the first direction. We provide power tools.

According to the power tool configured as described above, it is possible to restrict the movement of the tool from the power tool main body in two directions, ie, the first direction and the second direction.

In the above configuration, at least one of the first holding portion and the second holding portion is configured to be relatively movable with respect to the housing, and the relative movement can release the overlapping state with the axial center. is preferably
The present invention further includes a motor, a housing that accommodates the motor, and a tool holding section that is provided in the housing and capable of holding a tool. The tool holding portion has a first shaft portion having an axis extending in one direction and a second shaft portion having an axis extending in a second direction, and the tool holding portion is a first holding portion engageable with the first shaft portion. and a second holding portion that is relatively movable in the second direction with respect to the housing and engages with the second shaft portion, wherein the second holding portion is moved by the relative movement to the The position of the second holding part can be changed between a holding position engaged with the second shaft part and a retracted position spaced apart from the second shaft part. The tool is configured to cooperate with the first holding portion to hold the tool so as not to be removed, and to be able to remove the tool from the tool holding portion when positioned at the retracted position. We provide a power tool characterized by:
In the above configuration, it is preferable that the second holding portion is an elastic body separate from the housing.
In addition, the second holding portion is provided at a position different from the first holding portion, and in a state in which the tool is held by the tool holding portion, at least a part of the second shaft portion extends over the entire circumferential direction. The tool is held in cooperation with the surrounding first holding portion, and the tool is held by the first holding portion by relatively moving the first holding portion and the tool in the first direction. It is preferable to be configured so that it can be held.
Further, the first holding portion allows movement of the tool in the first direction with respect to the housing in a state in which the tool is held by the tool holding portion, and allows movement of the tool about the axis of the first shaft portion. The second holding portion restricts movement of the tool in the first direction with respect to the housing when the tool is held by the tool holding portion, and the It is preferable that the first shaft portion of the tool is configured to be restricted from rotating around the axis.
Moreover, it is preferable that the tool can be held by the second holding portion by moving the second holding portion from the retracted position to the holding position.
Further, the first holding portion is configured in a cylindrical shape into which the first shaft portion can be inserted, and the second holding portion is configured such that the first shaft portion is inserted into the first holding portion so that the It is movable between a holding position and the retracted position, the holding position being centered on the movement of the tool relative to the housing in the first direction with respect to the housing and the axis of the first shaft portion. It is preferable that the retracted position is a position at which rotation can be regulated, and that the retracted position is a position separated from the second shaft portion.
Further, the housing is provided with a projection, the second holding portion is provided separately from the housing, and the second holding portion is open in a projecting direction of the projection and receives and fixes the projection. and a holding portion having a second opening that opens in the protruding direction and receives at least part of the second shaft portion.
Moreover, it is preferable that the second holding portion is movable with respect to the housing between the holding position and the retracted position by its own elastic force or by receiving a biasing force from the outside.
Moreover, it is preferable that the first opening and the second opening are opened in the same direction.
Further, it is preferable that a direction in which the second opening opens at the holding position and a direction in which the second opening opens at the retracted position are different from each other.
The housing may further include a tip tool attaching/detaching portion to which a tip tool is attachable/detachable. At least one of the replacement tools is preferred.
The housing may further include a tip tool attaching/detaching portion to which a tip tool is attachable/detachable. at least one of the replacement tools, the tip tools having a first tip tool axis and a second tip tool axis extending in different directions, and the replacement tools each having a first replacement tool extending in different directions; It has a tool shaft and a second replacement tool shaft, and the first holding portion is configured to be able to hold at least one of the first tip tool shaft and the first replacement tool shaft. It is preferable that the second holding portion is configured to be able to hold at least one of the second tip tool shaft and the second replacement tool shaft.

According to the power tool of the present invention, it is possible to prevent the tool from falling out of the power tool main body unintentionally by the operator.

BRIEF DESCRIPTION OF THE DRAWINGS It is a cross-sectional side view which shows the internal structure of the vibration tool based on the 1st Embodiment of this invention. (a) is a right side view showing the appearance of a housing and a tool holding portion of the vibration tool according to the first embodiment of the present invention, (b) is a cross-sectional view taken along the line BB of (a), (c) is a sectional view taken along line CC of (b). FIG. 4 is a perspective view showing an assembly structure of the second holding portion of the tool holding portion of the vibration tool according to the first embodiment of the present invention; FIG. 5 is a diagram for explaining a process of attaching and detaching a hexagonal wrench to and from the tool holding portion of the vibration tool according to the first embodiment of the present invention; FIG. 4 is a cross-sectional view showing a first modification of the vibration tool according to the first embodiment of the present invention, and is a diagram for explaining a process of attaching and detaching the hexagonal wrench to and from the tool holding portion; FIG. 8A is a cross-sectional side view showing a second modification of the vibration tool according to the first embodiment of the present invention, and FIGS. It is a figure for explaining. FIG. 10A is a diagram showing a third modification of the vibration tool according to the first embodiment of the present invention, and is a diagram for explaining a process of attaching and detaching the hexagonal wrench to and from the tool holding portion. (a) is a right side view showing the appearance of a housing and a tool holding portion of a vibration tool according to a second embodiment of the present invention, and (b) is a cross-sectional view taken along line BB of (a); (c) is a sectional view taken along line CC of (b). FIG. 10 is a diagram for explaining a process of attaching and detaching a hexagonal wrench to and from the tool holding portion of the vibration tool according to the second embodiment of the present invention; (a) is a right side view showing the appearance of a housing and a tool holding portion of a vibration tool according to a third embodiment of the present invention; (b) is a cross-sectional view taken along line BB of (a); (c) is a sectional view taken along line CC of (b). FIG. 11 is a diagram for explaining a process of attaching and detaching a hexagonal wrench to and from the tool holding portion of the vibration tool according to the third embodiment of the present invention; (a) is a right side view showing the appearance of a housing and a tool holding portion of a vibration tool according to a fourth embodiment of the present invention, and (b) is a sectional view taken along line BB of (a). FIG. 10 is a diagram for explaining a process of attaching and detaching a hexagonal wrench to and from the tool holding portion of the vibration tool according to the fourth embodiment of the present invention; (a) is a diagram for explaining a process of attaching and detaching a chuck handle to and from a tool holding portion of a screwdriver according to a fifth embodiment of the present invention, and (b) is a BB line cross section of (a). It is a diagram. FIG. 10 is a diagram for explaining a process of attaching and detaching a hexagonal wrench to and from a tool holding portion of a conventional vibration tool;

A vibration tool 1, which is an example of a power tool according to a first embodiment of the present invention, will be described with reference to FIGS. 1 to 7. FIG. The vibrating tool 1 is a power tool that polishes, cuts, and cuts a workpiece by driving (vibrating) the tip tool P. As shown in FIG.

In the following description, "front" shown in the drawings is defined as the forward direction, "rear" as the rearward direction, "upward" as the upward direction, and "downward" as the downward direction. In addition, when the vibrating tool 1 is viewed from behind, "right" is defined as the right direction, and "left" is defined as the left direction. When referring to dimensions, numerical values, etc. in this specification, not only the dimensions and numerical values that completely match the dimensions and numerical values, but also the dimensions and numerical values that substantially match the dimensions and numerical values, etc. (for example, within the range of manufacturing error) shall include Similarly, "substantially identical", "substantially orthogonal", "substantially parallel", "substantially coincident", "substantially flush" with respect to "same", "perpendicular", "parallel", "match", "flush", etc. etc. shall be included.

As shown in FIGS. 1 to 3, the vibration tool 1 includes a housing 2 to which a battery pack B can be attached and detached, a motor 3, a control section 4, a power transmission section 5, and a tip tool P. It mainly has an output shaft portion 6 and a tool holding portion 7 .

As shown in FIGS. 1 and 2(a), the housing 2 mainly has a body housing 21 and a holder 22. As shown in FIG. The housing 2 is an example of the "housing" in the present invention.

The body housing 21 forms an outer shell of the vibration tool 1 and has a substantially cylindrical shape extending in the front-rear direction. As shown in FIG. 3, the body housing 21 is configured as a split housing divided along a split plane (virtual plane) passing through substantially the center of the housing 2 in the left-right direction and perpendicular to the left-right direction. The body housing 21 accommodates the motor 3 , the control section 4 , the power transmission section 5 , and the upper portion of the output shaft section 6 . The diameter of the substantially central portion of the body housing 21 in the front-rear direction is configured to be large enough for a worker to grip during work. The body housing 21 is provided with a slide switch 21A, a slide bar 21B, a battery mounting portion 21C, a recess 21D, and a pair of regulation portions 21G (FIG. 3).

As shown in FIG. 1, the slide switch 21A is provided on the upper front portion of the body housing 21. As shown in FIG. In other words, the slide switch 21A is provided on the outer wall of the body housing 21, and the operator can operate the slide switch 21A from the outside. The slide switch 21A moves in the front-rear direction by being operated from the outside.

The slide bar 21B is accommodated in the body housing 21, and its front end is connected to the lower surface of the slide switch 21A. Accordingly, the slide bar 21B can move in the front-rear direction as the slide switch 21A moves in the front-rear direction. In other words, the slide bar 21B moves forward together with the slide switch 21A when the slide switch 21A moves forward, and moves backward together with the slide switch 21A when the slide switch 21A moves backward. move to

The recess 21</b>D is provided in the rear portion of the body housing 21 . The recess 21</b>D is formed so as to be recessed inwardly of the body housing 21 from the outer peripheral surface of the body housing 21 . A boss 21F is provided in the recess 21D.

The boss 21F is provided at a position overlapping the recess 21D when viewed in the left-right direction. Specifically, the boss 21</b>F extends in the left-right direction within a space defined by the concave portion 21</b>D recessed inward of the body housing 21 . The boss 21F is an example of a "protrusion" in the present invention.

Further, as shown in FIGS. 2 and 3, a groove 21a is formed in the rear portion of the body housing 21. As shown in FIGS. The groove 21a extends vertically and is recessed inwardly of the body housing 21 with a predetermined curvature. In addition, a convex portion 21H that protrudes rightward in a rectangular shape is provided at the lower portion of the arc-shaped peripheral surface that forms the groove 21a.

A pair of restricting portions 21G are provided so as to protrude from the body housing 21 to the right. A pair of restricting portions 21G are provided symmetrically across the groove 21a.

The holder 22 shown in FIG. 1 is made of metal alloy and supported by the body housing 21 . The holder 22 rotatably supports the output shaft portion 6 via bearings.

The motor 3 shown in FIG. 1 is a motor with brushes and has a rotating shaft 31 . The rotating shaft 31 is rotatable around an axis A extending in the front-rear direction. The axis A is a line that extends in the front-rear direction and passes through the axis of the rotating shaft 31 . The motor 3 is an example of the "motor" in the present invention.

As shown in FIG. 1, the control section 4 mainly has a control box 41, a main switch 42, and a speed adjustment dial 43. As shown in FIG.

The control box 41 has a substantially rectangular parallelepiped shape with an open front, and is accommodated in the rear part of the body housing 21 so that its shortest side is parallel to the front-rear direction. Although not shown in the drawing, the control box 41 accommodates a board on which a control circuit for controlling the motor 3 is mounted.

The main switch 42 is connected to the rear end of the slide bar 21B of the body housing 21. As shown in FIG. The main switch 42 is electrically connected to the control box 41 via a signal cable. The main switch 42 outputs a tool start signal for starting the motor 3 when the slide switch 21A is pulled in a predetermined direction, i.e., when the slide switch 21A is actuated (for example, when it is slid backward by the operator's finger). configured to output to Further, the main switch 42 stops outputting the tool start signal when the slide switch is pulled or released in a direction opposite to the predetermined direction (for example, when the slide switch is slid forward by the operator's finger). is configured as

The speed adjustment dial 43 is a mechanism for setting the target number of revolutions of the motor 3 and is provided at the upper rear portion of the main body housing 21 . The speed adjustment dial 43 is configured to be operable from the outside by the operator. The speed adjustment dial 43 is electrically connected to the board accommodated in the control box 41 via a signal cable.

As shown in FIG. 1 , the power transmission section 5 is connected to the rotating shaft 31 of the motor 3 and mainly has a spindle 51 , a bearing 52 and a swing arm 53 .

The spindle 51 extends in the front-rear direction. The spindle 51 is rotatably supported by the holder 22 via bearings. A front end portion of the rotary shaft 31 is fitted to the rear portion of the spindle 51 . Thereby, the spindle 51 can rotate about the axis A integrally with the rotating shaft 31 . Further, the spindle 51 has an eccentric shaft 51A.

The eccentric shaft 51A forms a front end portion of the spindle 51 and has a substantially cylindrical shape extending in the front-rear direction. The eccentric shaft 51A is configured to have a smaller diameter than the diameter of other portions of the spindle 51, and an axis B passing through the axis is slightly deviated from the axis A. As shown in FIG. As a result, when the spindle 51 rotates about the axis A, the distance from the axis A to the outer peripheral surface of the eccentric shaft 51A positioned substantially to the right or substantially to the left of the front view changes. .

The bearing 52 is provided on the eccentric shaft 51A. In other words, the inner ring of bearing 52 is fixed to eccentric shaft 51A.

As shown in FIG. 1, the swing arm 53 has a cylindrical portion 53A and an arm portion 53B.

The cylindrical portion 53A has a substantially cylindrical shape extending in the vertical direction. The inner peripheral surface of the cylindrical portion 53A is fixed to the output shaft portion 6. As shown in FIG.

Although not shown in the drawing, the arm portion 53B has a substantially U-shape with a rearward opening when viewed from above. Arm portion 53B is in contact with the outer ring of bearing 52 . That is, the outer ring of the bearing 52 is sandwiched between the arm portions 53B in the left-right direction. In this embodiment, when the spindle 51 rotates about the axis A, the distance from the axis A in the front view to the outer peripheral surface of the eccentric shaft 51A positioned substantially rightward or substantially leftward changes. Therefore, the swing arm 53 swings around the axis C. As shown in FIG. The axis C passes through the center of the output shaft portion 6 and is orthogonal to the axis A. As shown in FIG.

As shown in FIG. 1, the output shaft portion 6 is supported by the body housing 21 and has an output shaft 61 and a hexagon socket head screw 62 . The output shaft portion 6 is an example of the "tip tool attaching/detaching portion" in the present invention.

The output shaft 61 has a substantially cylindrical shape extending in the vertical direction. A vertically extending female screw hole 61 a is formed in the lower portion of the output shaft 61 . Also, the output shaft 61 has a plurality of projections 61A. A plurality of protrusions 61A protrude downward from the lower surface of the output shaft 61 . The plurality of projections 61A are provided at approximately equal intervals in the circumferential direction of the output shaft 61. As shown in FIG.

The hexagon socket screw 62 is a male screw, and a hexagon socket 62a is formed in its head.

Further, as shown in FIG. 1, in the present embodiment, the tip tool P is held between the head of the hexagon socket head screw 62 and the lower part of the output shaft 61 so that the tip tool P is sandwiched. It is configured to be held by the output shaft portion 6 . Specifically, the tip tool P is formed with grooves with which a plurality of projections 61A of the output shaft 61 can be engaged. The tip tool P is held by the output shaft portion 6 by being sandwiched between the lower surface of the output shaft 61 and the upper surface of the hexagon socket head screw 62 with the plurality of projections 61A engaged with the grooves.

Next, the detailed configuration of the tool holding portion 7 and the hexagonal wrench Q, which is an example of a replacement tool attachable to and detachable from the tool holding portion 7, will be described with reference to FIGS.

The tool holding portion 7 is provided in the body housing 21 and is configured to be able to hold the hexagonal wrench Q. As shown in FIG. As shown in FIGS. 1 to 3, the tool holder 7 has a first holder 71 and a second holder 72 . The tool holding part 7 is an example of the "tool holding part" in the present invention.

The first holding portion 71 is formed in a substantially semi-cylindrical shape extending in the vertical direction, and is provided integrally with the main body housing 21 at the rear portion of the main body housing 21 . Specifically, it is provided so as to cover the arc-shaped peripheral surface forming the groove 21a from the right side.

The curvature of the inner peripheral surface of the first holding portion 71 and the curvature of the arc-shaped peripheral surface forming the groove 21a are configured to be the same. Therefore, in the region where the first holding portion 71 is provided, a substantially cylindrical surface extending in the vertical direction is defined by the peripheral surface forming the groove 21a and the inner peripheral surface of the first holding portion. The first holding portion 71 is an example of the "first holding portion" in the present invention.

The second holding portion 72 is provided at a position different from that of the first holding portion, and is configured to be able to hold the hexagonal wrench Q in cooperation with the first holding portion 71 . The second holding portion 72 is an elastic body such as thermosetting resin having high heat resistance, and is configured separately from the main body housing 21 . The second holding portion 72 is formed in a substantially flat shape whose length in the left-right direction is shorter than the length in the front-rear direction and the length in the up-down direction. Also, the second holding portion 72 is formed to be slightly tapered downward. That is, the length of the upper portion of the second holding portion 72 in the front-rear direction is longer than the length of the lower portion in the front-rear direction. Further, as shown in FIG. 1, the shape of the upper end of the second holding portion 72 is formed in the same shape as the concave portion 21D of the main body housing 21. As shown in FIG. As shown in FIGS. 1 and 3 , the upper portion of the second holding portion 72 is accommodated in the recess 21D of the main body housing 21 . Thereby, the second holding portion 72 is configured to be restrained from being deformed more than necessary with respect to the main body housing 21 . The second holding portion 72 has a held portion 72A and a holding portion 72B. The second holding portion 72 is an example of the "second holding portion" in the present invention.

The held portion 72A forms an upper portion of the second holding portion 72 and has a first hole 72a. The first hole 72a penetrates the held portion 72A in the left-right direction. The inner diameter of the first hole 72a is slightly smaller than the outer diameter of the boss 21F of the body housing 21, and the boss 21F is inserted through the first hole 72a. In other words, the held portion 72A is formed with a first hole 72a that opens in the projecting direction of the boss 21F and receives and fixes the boss 21F. With such a configuration, the second holding portion 72 provided separately from the main body housing 21 can be easily fixed to the main body housing 21 . Further, in the present embodiment, since the held portion 72A is housed in the recess 21D and the boss 21F is inserted into the first hole 72a, excessive deformation of the second holding portion 72 with respect to the main body housing 21 is prevented. are configured to be regulated. The held portion 72A is an example of the "held portion" in the present invention. The first hole 72a is an example of the "first opening" in the present invention.

The holding portion 72B forms a lower portion of the second holding portion 72 and has a second hole 72b. The second hole 72b penetrates the holding portion 72B in the left-right direction. In other words, the second hole 72b extends in the same direction as the first hole 72a. Therefore, it becomes easier to form the first hole 72a and the second hole 72b in the second holding portion 72 of the tool holding portion 7 that is manufactured as an integral part (single part), and the manufacturing cost of the tool holding portion 7 is reduced. becomes possible. The inner diameter of the second hole 72b is slightly larger than the inner diameter of the first hole 72a. The holding portion 72B is an example of a "holding portion" in the present invention. The second hole 72b is an example of a "second opening" in the present invention.

In this embodiment, both the first hole 72a and the second hole 72b are formed so as to pass through the second holding portion 72 in the left-right direction. However, the configuration is not necessarily limited to such a configuration. For example, at least one of the first hole 72a and the second hole 72b may be formed in a bottomed shape that opens to either the right or left portion of the tool holding portion 7 .

As shown in FIGS. 2 and 3, the hexagonal wrench Q has a first axis Q1 and a second axis Q2. The first axis Q1 and the second axis Q2 extend in directions that cross each other. Specifically, the first axis Q1 and the second axis Q2 extend in directions perpendicular to each other. As a result, the hexagonal wrench Q is substantially L-shaped. The outer diameter of the first shaft Q1 is slightly smaller than the inner diameter of the first holding portion 71 . The outer diameter of the second shaft Q2 is slightly larger than the inner diameter of the second hole 72b of the second holding portion 72. As shown in FIG. Therefore, the second shaft Q2 is held in such a manner as to be press-fitted into the second hole 72b. Since the periphery of the second hole 72b is made of an elastic material with a high coefficient of friction, it can be suitably deformed for press-fitting, and in the holding state, the holding force can be improved by the frictional force. As shown in FIG. 4, each of the first axis Q1 and the second axis Q2 has an axis Q3 and an axis Q4. The first axis Q1 is an example of the "first shaft portion" in the present invention, and the second axis Q2 is an example of the "shaft portion" and the "second shaft portion" in the present invention. The first axis Q1 is an example of a "first replacement tool axis", and the second axis Q2 is an example of a "second replacement tool axis".

As shown in FIG. 4(c), when the hexagonal wrench Q is held by the tool holding portion 7, the axis Q3 extends vertically. Further, in a state in which the hexagonal wrench Q is held by the tool holding portion 7, the axis Q4 extends in the left-right direction. The vertical direction is an example of the "first direction" in the present invention, and the horizontal direction is an example of the "second direction" in the present invention.

Next, referring to FIG. 4, an operation of attaching and detaching the hexagonal wrench Q to and from the tool holding portion 7 according to the first embodiment of the present invention will be described.

First, the operator inserts the first shaft Q<b>1 of the hexagonal wrench Q into the first holding portion 71 . Specifically, the operator brings the tip of the first shaft Q1 close to the first holding portion 71 from below along the groove 21a, and inserts the first shaft Q1 through the first holding portion 71. As shown in FIG. In other words, by vertically moving the hexagonal wrench Q relative to the body housing 21, the first holding portion 71 accommodates a portion of the first shaft Q1 of the hexagonal wrench Q (see FIG. 4A). . That is, in the present embodiment, the hexagonal wrench Q can be easily held by the first holding portion 71 by relatively moving the first holding portion 71 and the hexagonal wrench Q. In this state, movement of the hexagonal wrench Q in a direction orthogonal to the vertical direction (radial movement of the first holding portion 71) is restricted. The first holding portion 71 allows the hexagonal wrench Q to move vertically with respect to the body housing 21 in a state in which the first shaft Q1 is held by the first holding portion 71, and also allows the first shaft Q1 of the hexagonal wrench Q to move. Rotation of Q1 about axis Q3 is allowed.

In the present embodiment, when the first shaft Q1 is inserted through the first holding portion 71, the outer peripheral surface of the first shaft Q1 and the convex portion 21H provided on the main body housing 21 are configured to contact each other. Therefore, the hexagonal wrench Q and the body housing 21 are not rubbed more than necessary. This makes it possible to suppress wear of the body housing 21 due to contact with the hexagonal wrench Q.

Next, as indicated by an arrow X1 in FIG. 4(a), the operator moves the hexagonal wrench Q to the axis Q3 of the first axis Q1 so that the axis Q4 of the second axis Q2 coincides with the left-right direction. center. In this case, the operator tilts the second holding part 72 to the left as shown in FIG. 4(b). Specifically, the holding portion 72B forming the lower portion of the second holding portion 72 is rotated clockwise in FIG. 4B (in the direction opposite to the direction indicated by the arrow X3). At this time, since the second holding portion 72 is an elastic body such as a thermosetting resin, the holding portion 72B is supported by the concave portion 21D and is supported by the held portion 72A forming the upper portion of the second holding portion 72 as a fulcrum. It can be deformed as if it were suitably rotated. In the following description, the position of the second holding portion 72 in the state of being rotated clockwise in FIG. The retracted position is a position where the second shaft Q2 and the holding portion 72B are separated. The second holding portion 72 at the retracted position weakens the degree of restriction on the vertical (particularly downward) movement of the hexagonal wrench Q. As shown in FIG.

Further, in this state, the positions of the second shaft Q2 and the second hole 72b of the holding portion 72B of the second holding portion 72 in the front-rear direction match. The operator inserts the second shaft Q2 from its tip through the second hole 72b as indicated by an arrow X2 in FIG. 4(b). At this time, the second holding portion 72 rotates the holding portion 72B in the counterclockwise direction (the direction indicated by the arrow X3) in FIG. 4B by its own elastic restoring force. This allows the operator to suitably insert the second shaft Q2 through the second hole 72b. In the following description, the position of the second holding portion 72 in a state where the holding portion 72B holds the second shaft Q of the hexagonal wrench Q as shown in FIG. 4(c) is called a "holding position". The holding position is a position where vertical movement of the hexagonal wrench Q with respect to the main body housing 21 and rotation of the first shaft Q1 about the axis Q3 can be restricted. Thus, in the present embodiment, the second holding portion 72 can move between the holding position and the retracted position with respect to the body housing 21 with a simple structure based on its own elastic restoring force.

Here, as shown in FIGS. 2 and 4(c), in a state in which the hexagonal wrench Q is held by the tool holding portion 7, the second holding portion is positioned below the axis Q4 of the second shaft Q2. 72 is configured to be positioned. That is, when the hexagonal wrench Q is held by the tool holding portion 7, the axis Q4 of the second shaft Q2 and the second holding portion 72 are configured to overlap when viewed in the vertical direction. Therefore, while movement of the hexagonal wrench Q in a direction perpendicular to the vertical direction is restricted by the first retaining portion 71 , the second retaining portion 72 restricts the vertical movement of the hexagonal wrench Q. As a result, it is possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 7 even when the body housing 21 vibrates during operation.

Further, as shown in FIG. 4C, the holding portion 72B surrounds a part of the second axis Q2 in the left-right direction over the entire circumferential direction when the hexagonal wrench Q is held by the tool holding portion 7. I'm in. This makes it possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 7 . On the other hand, since the holding portion 72B is configured to be relatively movable with respect to the main body housing 21, the holding portion 72B may surround a part of the second axis Q2 over the entire circumferential direction as in the present embodiment. Despite the configuration, the hexagon wrench Q can be attached to and detached from the second holding portion 72 by relatively moving the holding portion 72B with respect to the main body housing 21 .

Further, in the present embodiment, the second holding portion 72 restricts the vertical movement of the hexagonal wrench Q with respect to the body housing 21 in a state in which the first shaft Q1 is held by the first holding portion 71. It is configured to restrict rotation of the hexagonal wrench Q about the axis Q3 of the first shaft Q1. Therefore, in a state in which the hexagonal wrench Q is held by the tool holding portion 7 , it is possible to prevent the hexagonal wrench Q from rotating within the tool holding portion 7 and falling off from the tool holding portion 7 .

Further, the hexagonal wrench Q can be held by the second holding portion 72 by moving the holding portion 72B of the second holding portion 72 in the left-right direction relative to the housing. As described above, in the present embodiment, when holding the first shaft Q1 in the first holding portion 71, the holding portion 72B is moved in the horizontal direction, which is different from the vertical direction in which the hexagonal wrench Q is moved. can be held by the second holding portion 72 . Therefore, it is possible to suitably prevent the hexagonal wrench Q from falling off from the power tool body.

Moreover, the direction in which the second hole 72b of the holding portion 72B opens at the holding position shown in FIG. 4C differs from the direction in which the second hole 72b opens at the retracted position shown in FIG. 4B. there is According to such a configuration, by changing the opening direction of the second hole 72b, it is possible to change the restriction state of the movement of the second holding portion 72 with respect to the hexagonal wrench Q, and to easily attach and detach the hexagonal wrench Q. becomes.

Further, as shown in FIG. 2(a), when the hexagonal wrench Q is held by the tool holding portion 7, the pair of restricting portions 21G of the main body housing 21 are positioned so as to sandwich the first shaft Q1 from the front-rear direction. are doing. Therefore, it is possible to suppress rattling of the hexagonal wrench Q with respect to the body housing.

Further, in the present embodiment, when the hexagonal wrench Q is held by the tool holding portion 7, at least a portion of the first holding portion 71 is aligned with the axis Q3 of the first axis Q1 of the hexagonal wrench Q in the left-right direction. While overlapping, at least a portion of the second holding portion 72 vertically overlaps the axis Q4 of the second axis Q2. In this manner, the tool holding portion 7 is configured to be able to restrict movement of the hexagonal wrench Q from the main body of the vibration tool 1 in the first direction and the second direction intersecting the first direction.

On the other hand, when removing the hexagonal wrench Q, the operator moves the holding portion 72B in the clockwise direction in FIG. direction). This cancels the state in which the second shaft Q2 is inserted through the second hole 72b.

Next, the operator moves the hexagonal wrench Q downward. As a result, the state in which the first shaft Q<b>1 is inserted through the first holding portion 71 is released, and the hexagonal wrench Q can be removed from the body housing 21 .

Next, with reference to FIG. 1, the attachment/detachment operation of the tip tool P to/from the output shaft portion 6 using the hexagonal wrench Q will be described.

When removing the tip tool P from the output shaft portion 6, the operator engages the tip portion of the first shaft Q1 or the second shaft Q2 of the hexagonal wrench Q with the hexagonal hole 62a of the hexagonal socket head screw 62 of the output shaft portion 6. match. Next, the operator rotates the hexagonal wrench Q in the direction of loosening the engagement of the hexagonal socket screw 62 with the output shaft 61 of the output shaft portion 6 . As a result, the tip tool P is released from the pinched state between the lower surface of the output shaft 61 and the upper surface of the head of the hexagon socket screw 62 , and the tip tool P can be removed from the output shaft portion 6 .

On the other hand, when attaching the tip tool P to the output shaft portion 6, the operator first prepares a plurality of projections 61A provided on the lower surface of the output shaft 61 and forms the tip tool P so as to correspond to the plurality of projections 61A. and a plurality of grooves. In this state, the operator engages the tip of the first shaft Q1 or the second shaft Q2 of the hexagonal wrench Q with the hexagonal hole 62a. Then, the hexagon wrench Q is rotated so that the hexagon socket head screw 62 is screwed into the female screw hole 61 a of the output shaft 61 . As a result, the tip tool P can be attached to the output shaft portion 6 .

Next, with reference to FIG. 1, the operation of machining a workpiece using the vibration tool 1 according to the first embodiment of the present invention and the operation of the vibration tool 1 during the machining operation will be described.

When the operator operates the slide switch 21A to turn on the main switch 42 while the battery pack B is attached to the battery attachment portion 21C of the main body housing 21, the electric power of the battery pack B is supplied to the motor 3. , the rotating shaft 31 of the motor 3 rotates. On the other hand, when the slide switch 21A is operated to turn off the main switch 42, the electric power of the battery pack B is no longer supplied to the motor 3, and the rotating shaft 31 of the motor 3 stops.

When electric power is supplied to the motor 3, the rotating shaft 31 and the spindle 51 rotate together. When the spindle 51 rotates, the eccentric shaft 51A and the bearing 52 revolve around the axis A. When the bearing 52 revolves around the axis A, the swing arm 53 reciprocates with the output shaft 61 as a fulcrum within a predetermined angular range. In other words, when the spindle 51 rotates about the axis A, the distance from the axis A in the front view to the outer peripheral surface of the eccentric shaft 51A located substantially to the right or substantially to the left changes. The swing arm 53 swings around the axis C. As shown in FIG. Specifically, the output shaft 61 alternately repeats forward rotation and reverse rotation about the axis C within a predetermined angle range. In this manner, the torque of the motor 3 is converted into torque within the range of the predetermined angle of the output shaft 61 .

When the output shaft 61 rotates forward and backward within a range of a predetermined angle, the tip tool P also swings around the axis C within a range of a predetermined angle. Then, when the tip tool P is pressed against the object, the object can be processed, for example, polished.

Next, the effects of the vibrating tool 1 according to the present embodiment will be described in detail while comparing with the vibrating tool 900 according to the conventional example shown in FIG. First, the configuration of a vibration tool 900 according to a conventional example will be described.

As shown in FIG. 15, a conventional vibration tool 900 has a housing 91 and a tool holding portion 92 .

The tool holding portion 92 is formed integrally with the housing 91 . The tool holding portion 92 is an elastic body such as a thermoplastic resin having low heat resistance compared to a thermosetting resin or the like. The tool holding portion 92 is configured as a pair of members projecting from the housing 91 . The tool holding portion 92 extends in a direction orthogonal to the plane of FIG. 15 . The tool holding portion 92 is provided with a pair of restricting portions 92A.

The pair of restricting portions 92A are provided at the protruding end portions of the pair of ribs forming the tool holding portion 92, and extend in the direction orthogonal to the paper surface of FIG. An opening 92a is formed by the projecting ends of the pair of restricting portions 92A.

Moreover, the tool holding part 92 is configured to be able to hold a hexagonal wrench Z. As shown in FIG. The hexagonal wrench Z has a shaft portion having an axis Z1 extending in a direction perpendicular to the plane of the drawing when held by the tool holding portion 92 . The diameter of the shaft portion is configured to be larger than the distance between the pair of restricting portions 92A on the paper surface.

When holding the hexagonal wrench Z in the tool holding portion 92, the operator presses the shaft portion of the hexagonal wrench Z into the tool holding portion 92 from the right side of the paper as shown in FIGS. to fit. Specifically, as shown in FIGS. 15B and 15C, the hexagonal wrench Z is inserted into the tool holding portion 92 while elastically deforming the pair of restricting portions 92A through the opening 92a. .

Then, as shown in FIG. 15(d), the diameter of the shaft portion of the hexagonal wrench Z is configured to be larger than the distance between the pair of restricting portions 92A, so that the hexagonal wrench Z does not drop out of the tool holding portion 92. is held by the tool holding portion 92 in a state in which the force is suppressed. On the other hand, when removing the hexagonal wrench Z from the tool holding portion 92, the hexagonal wrench Z is removed from the tool holding portion 92 while elastically deforming the pair of restricting portions 92A through the opening 92a.

However, since the tool holding portion 92 has the opening 92a, there is a possibility that the hexagonal wrench Z may drop out through the opening 92a due to vibrations generated in the housing 91 during operation. Further, since the tool holding portion 92 is a thermoplastic elastic body, frequent attachment and detachment of the hexagonal wrench Z causes wear and deterioration, weakening the fitting force. In particular, in the configuration of the tool holding portion 92, the direction of elastic deformation of the restricting portion 92A differs when the hexagonal wrench Z is attached and when it is removed. Therefore, the load applied to the restricting portion 92A at the time of attachment and detachment also increases. Due to this reduction in fitting force, the hexagonal wrench Z may fall off through the opening 92a. That is, in the vibration tool 900 according to the conventional example, when the hexagonal wrench Z is moved in the left-right direction to be attached to and detached from the tool holding portion 92, since the opening 92a is formed in the attachment/detachment direction (left-right direction), it is difficult to fit. There is a high possibility that the hexagon wrench Z will fall off due to a decrease in the matching force.

On the other hand, in this embodiment, as shown in FIG. When viewed in the up-down direction, the axis Q4 of the second shaft Q2 and the second holding portion 72 overlap each other. Therefore, while movement of the hexagonal wrench Q in a direction orthogonal to the vertical direction is restricted by the first retaining portion 71 , movement of the hexagonal wrench Q in the vertical direction is restricted by the second retaining portion 72 . As a result, even when vibration occurs in the power tool body during operation, it is possible to prevent the tool from falling off from the tool holding portion. Moreover, since there is no need to provide a restricting portion for fitting the hexagonal wrench Q to the second holding portion 72, there is no need to consider a decrease in fitting force. Further, the direction of elastic deformation of the second holding portion 72 when the hexagonal wrench Q is attached and detached is one direction, and the amount of deformation can be suppressed, so deterioration of the second holding portion 72 can be suppressed.

In particular, in the present embodiment, the holding portion 72B surrounds a portion of the second axis Q2 in the left-right direction over the entire circumferential direction when the hexagonal wrench Q is held by the tool holding portion 7 . This makes it possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 7 . On the other hand, since the holding portion 72B is configured to be relatively movable with respect to the main body housing 21, the holding portion 72B may surround a part of the second axis Q2 over the entire circumferential direction as in the present embodiment. Despite the configuration, the hexagon wrench Q can be attached to and detached from the second holding portion 72 by relatively moving the holding portion 72B with respect to the main body housing 21 .

In addition, while the tool holding portion 92 according to the conventional example is a thermoplastic elastic body with low heat resistance, vibration occurs between the hexagonal wrench Z and the tool holding portion 92 due to vibration generated in the housing 91 during operation. There is a possibility that the tool holding portion 92 will melt due to the friction caused and become non-functional.

In contrast, the second holding portion 72 according to the present embodiment is a thermosetting elastic body with high heat resistance. Therefore, the second holding portion 72 is prevented from being welded to other members. Further, in the present embodiment, as shown in FIG. 4(c), when the hexagonal wrench Q is held by the tool holding portion 7, the surface forming the second hole 72b of the holding portion 72B and the second It is in close contact with the axis Q2. Also, the holding portion 72B is relatively movable with respect to the main body housing 21 . Therefore, even when the main body of the vibration tool 1 vibrates and the hexagonal wrench Q rattles relative to the main body housing 21, the holding portion 72B can follow the movement of the hexagonal wrench Q. Therefore, the occurrence of friction between the hexagonal wrench Q and the holding portion 72B is suppressed.

The present invention has been described above based on the first embodiment. It should be understood by those skilled in the art that the present embodiment is merely an example, and that various modifications can be made to the combination of each component, etc., and that such modifications are also within the scope of the present invention.

For example, as shown in FIG. 5 as a first modified example, the vibration tool 1 may have a tool holding portion 17 instead of the tool holding portion 7 . The tool holding portion 17 has a second holding portion 172 instead of the second holding portion 72 . The second holding portion 172 is an elastic body such as thermosetting resin having high heat resistance. The second holding portion 172 has a held portion 172A and a holding portion 172B. Since the held portion 172A is configured in the same manner as the held portion 72A according to the first embodiment, description thereof is omitted. The tool holding portion 17 is an example of the "tool holding portion" in the present invention. The second holding portion 172 is an example of the "second holding portion" in the present invention. The held portion 172A is an example of the "held portion" in the present invention, and the holding portion 172B is an example of the "holding portion" in the present invention.

The holding portion 172B is formed with a groove 172b that opens in the front surface thereof and extends in the front-rear direction. Further, the holding portion 172B is provided with a valve portion 172C projecting inwardly of the groove 172b.

When attaching the hexagonal wrench Q to the tool holding portion 17, the operator moves the hexagonal wrench Q about the axis Q3 of the first shaft Q1 while the first shaft Q1 of the hexagonal wrench Q is held by the first holding portion 71. rotate to As shown in FIG. 5(b), the second shaft Q2 passes through the valve portion 172C while elastically deforming the valve portion 172C , and enters deep into the groove 172b. After the passage of the second axis Q2, the shape of the valve portion 172C returns to the shape before elastic deformation. As a result, as shown in FIG. 5(c), the rotation of the hexagonal wrench Q about the axis Q3 of the first shaft Q1 is restricted.

In the first modified example as well, when the hexagonal wrench Q is held by the tool holding portion 17, the axial center Q4 of the second shaft portion Q2 and the second holding portion 172 are configured to overlap when viewed in the vertical direction. . Therefore, while movement of the hexagonal wrench Q in a direction orthogonal to the vertical direction is restricted by the first retaining portion 71 , vertical movement of the hexagonal wrench Q is restricted by the second retaining portion 172 . As a result, it is possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 17 even when vibration occurs in the main body of the vibration tool 1 during operation. When the hexagonal wrench Q is removed from the second holding portion 172, the second holding portion 172 is elastically deformed leftward and moved to the retracted position in the same manner as the second holding portion 72 described above. Wrench Q can be removed.

Further, as shown in FIG. 6 as a second modification, the vibration tool 1 may have a tool holding portion 27 instead of the tool holding portion 7 . The tool holding portion 27 has a second holding portion 272 instead of the second holding portion 72 . The tool holding portion 27 is an example of the "tool holding portion" in the present invention. The second holding portion 272 is an example of the "second holding portion" in the present invention.

The second holding portion 272 is an elastic body such as thermosetting resin having high heat resistance. The outer shape of the second holding portion 272 is formed substantially the same as the outer shape of the second holding portion 72 . A through hole 272a is formed in the second holding portion 272 so as to pass through the second holding portion 272 in the left-right direction. The through hole 272a is formed in a substantially elliptical shape having a long axis extending vertically when viewed in the horizontal direction. The boss 21F of the concave portion 21D of the body housing 21 is inserted through the through hole 272a.

When attaching the hexagonal wrench Q to the tool holding portion 27, the operator tilts the second holding portion 272 to the left as shown in FIG. 6(b). Specifically, the holding portion 272B forming the lower portion of the second holding portion 272 is rotated clockwise in FIG. 6B (in the direction opposite to the direction indicated by the arrow X5). That is, the second holding portion 272 is rotated so as to be positioned at the retracted position. At this time, since the second holding portion 272 is an elastic body such as a thermosetting resin, the lower portion of the second holding portion 272 is deformed as if it is suitably rotated with the upper portion of the second holding portion 272 as a fulcrum. It is possible to

Next, the operator inserts the second shaft Q2 from its tip through the through hole 272a as indicated by the arrow X4 in FIG. 6(b). At this time, the second holding portion 272 is deformed by its own elastic restoring force as if it is rotating toward the holding position. This allows the operator to insert the second shaft Q2 through the through hole 272a.

Also in the second modified example, when the hexagonal wrench Q is held by the tool holding portion 27, the axis Q4 of the second shaft portion Q2 and the second holding portion 272 are configured to overlap when viewed from the top and bottom. . Therefore, while movement of the hexagonal wrench Q in a direction perpendicular to the vertical direction is restricted by the first retaining portion 71 , the second retaining portion 272 restricts the vertical movement of the hexagonal wrench Q. As a result, it is possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 27 even when the main body of the vibration tool 1 vibrates during operation.

Further, as shown in FIG. 6A, the second holding portion 272 cooperates with the boss 21F of the concave portion 21D of the main body housing 21 to move the hexagonal wrench Q to the left and right when the tool holding portion 27 holds the hexagonal wrench Q. It surrounds a part of the second axis Q2 in the direction over the entire circumferential direction. Therefore, it is possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 27 . In addition, since the second holding portion 272 is configured to be relatively movable with respect to the main body housing 21, the attachment/detachment work of the hexagonal wrench Q with respect to the second holding portion 272 is facilitated. In addition, since both the boss 21F and the second shaft Q2 of the hexagonal wrench Q can be inserted through the through hole 272a, it is sufficient to form one through hole in the second holding portion 272, so that the second holding portion can be formed in a simpler shape. It becomes possible to realize the part.

Moreover, as shown in FIG. 7 as a third modified example, the vibration tool 1 may have a tool holding portion 37 instead of the tool holding portion 7 . The tool holding portion 37 has a first holding portion 371 instead of the first holding portion 71 . The first holding portion 371 has a first cylindrical portion 371A, a second cylindrical portion 371B, and a biasing member 371C. The tool holding portion 37 is an example of the "tool holding portion" in the present invention. The first holding portion 371 is an example of the "first holding portion" in the present invention.

The first cylindrical portion 371A is provided integrally with the main body housing 21 and has a substantially bottomed cylindrical shape having an upper wall and extending in the vertical direction. The second cylindrical portion 371B has a substantially cylindrical shape extending in the vertical direction. The outer diameter of the second cylindrical portion 371B is slightly smaller than the inner diameter of the first cylindrical portion 371A. The second cylindrical portion 371B is accommodated in the first cylindrical portion 371A so as to be vertically slidable within the first cylindrical portion 371A. The inner diameter of the second cylindrical portion 371B is slightly larger than the outer diameter of the first shaft Q1 of the hexagonal wrench Q. The second cylindrical portion 371B has a protruding portion 371D that protrudes radially inward from its inner peripheral surface.

The biasing member 371C is a coil spring. The biasing member 371C is arranged between the first cylindrical portion 371A and the second cylindrical portion 371B in the vertical direction. Specifically, the upper end of the biasing member 371C is fixed to the lower surface of the upper wall of the first cylindrical portion 371A, and the lower end of the biasing member 371C is fixed to the upper surface of the projecting portion 371D. Thereby, the biasing member 371C biases the second cylindrical portion 371B downward with respect to the first cylindrical portion 371A.

As shown in FIG. 7A, the first shaft Q1 of the hexagonal wrench Q is held by the first holding portion 371 by housing the tip end portion inside the second cylindrical portion 371B. When releasing the state in which the first shaft Q1 is held by the first holding portion 371, the operator presses the second cylindrical portion 371B against the biasing force of the biasing member 371C, as shown in FIG. 7(b). push up against By retracting the second cylindrical portion 371B upward, the state in which the first shaft Q1 is held by the first holding portion 371 is released. As a result, the rightward movement of the hexagonal wrench Q is no longer restricted by the first holding portion 371 , so that the operator can remove the hexagonal wrench Q from the tool holding portion 37 . When the operator releases the second cylindrical portion 371B, the second cylindrical portion 371B moves downward due to the biasing force of the biasing member 371C.

On the other hand, when attaching the hexagonal wrench Q to the tool holding portion 37 after replacing the tip tool P, the operator pushes up the second cylindrical portion 371B against the biasing force of the biasing member 371C. Thereafter, when the operator releases the second cylindrical portion 371B, the second cylindrical portion 371B moves downward due to the biasing force of the biasing member 371C to accommodate the tip of the first shaft Q1.

In the present embodiment, the object held by the tool holding portion 7 is the hexagonal wrench Q, which is an example of a replacement tool, but the tool holding portion 7 may be configured to be able to hold a tip tool. . According to such a configuration, by using the tool holding portion, it is possible to prevent the tip tool from falling off from the power tool main body when the tip tool is not in use. Also, the tip tool can be easily replaced.

Further, the tip tool that can be held by the tool holding portion may be configured to have a first tip tool axis and a second tip tool axis extending in different directions. In this case, it is preferable that the tool holding section is configured such that the first holding section holds the first tip tool shaft and the second holding section holds the second tip tool shaft. According to such a configuration, by using the tool holding portion, it is possible to prevent the tip tool having the first tip tool shaft and the second tip tool shaft extending in different directions from falling off from the power tool main body. becomes possible.

Next, a vibration tool 200, which is an example of a power tool according to a second embodiment of the present invention, will be described with reference to FIGS. 8 and 9. FIG. The vibrating tool 200 basically has the same configuration as the vibrating tool 1 according to the first embodiment. , the different configurations will be mainly described. In addition, the same configuration as that of the vibration tool 1 has the same effects as those described above.

A vibration tool 200 according to the second embodiment has a housing 210 instead of the housing 2 . Further, the vibration tool 200 has a tool holding portion 220 instead of the tool holding portion 7 .

The housing 210 has a body housing 211 . The body housing 211 forms an outer shell of the vibration tool 200 and has a support portion 211A. Housing 210 is an example of the "housing" in the present invention.

As shown in FIG. 8(c), the support portion 211A has a substantially cylindrical shape that has an opening at its lower portion and extends in the left-right direction. A boss 211B extending in the left-right direction is provided inside the support portion 211A. Boss 211B is an example of a "protrusion" in the present invention.

The tool holding portion 220 has an O-ring 221 instead of the second holding portion 72 . The O-ring 221 is a substantially annular member, and is an elastic body such as thermosetting resin having high heat resistance. The O-ring 221 is formed into a figure-of-eight shape by deforming diametrically opposite portions of the O-ring 221 radially inward, and is assembled to the body housing 211 . The radially inwardly deformed portion of the O-ring 221 is inserted through an opening formed in the lower portion of the support portion 211A. As shown in FIG. 8(c), when assembled to the main body housing 211, the O-ring 221 has a held portion 221A forming its upper portion and a holding portion 221B forming its lower portion. . A first hole 221a is formed by the inner peripheral surface of the held portion 221A, and a second hole 221b is formed by the inner peripheral surface of the holding portion 221B. The O-ring 221 is supported by the support portion 211A by inserting the boss 211B into the first hole 221a. The tool holding part 220 is an example of the "tool holding part" in the present invention. The O-ring 221 is an example of the "second holding part" in the present invention. The held portion 221A is an example of the "held portion" in the present invention, and the holding portion 221B is an example of the "holding portion" in the present invention. The first hole 221a is an example of the "first opening" in the present invention, and the second hole 221b is an example of the "second opening" in the present invention.

When attaching the hexagonal wrench Q to the tool holding portion 220, the operator tilts the holding portion 221B of the O-ring 221 to the left as shown in FIG. 9(a). In other words, the holding portion 221B is rotated clockwise in FIG. 9A (the direction opposite to the direction indicated by the arrow X7). That is, the O-ring 221 is rotated so as to be positioned at the retracted position. At this time, since the O-ring 221 is an elastic body such as a thermosetting resin, the holding portion 221B can be deformed as if it is suitably rotated about the held portion 221A as a fulcrum.

Next, the operator inserts the second shaft Q2 from its tip through the second hole 221b as indicated by an arrow X6 in FIG. 9 (a) . At this time, the O-ring 221 is deformed by its own elastic restoring force as if rotating toward the holding position. This allows the operator to insert the second shaft Q2 through the second hole 221b.

Here, as shown in FIG. 8(c), in a state where the hexagonal wrench Q is held by the tool holding portion 220, the center Q4 of the second shaft Q2 and the O-ring 221 are arranged so as to overlap each other when viewed from below. is configured to That is, in a state where the hexagonal wrench Q is held by the tool holding portion 220, the center Q4 of the second shaft Q2 and the O-ring 221 are configured to overlap when viewed in the vertical direction. Therefore, the O-ring 221 restricts the vertical movement of the hexagonal wrench Q in a state where the movement of the hexagonal wrench Q in the direction orthogonal to the vertical direction is restricted by the first holding portion 71 . This can prevent the hexagonal wrench Q from falling off from the tool holding portion 220 even when the body housing 21 vibrates during operation.

Further, as shown in FIG. 8(c), the holding portion 221B surrounds a part of the second axis Q2 in the left-right direction over the entire circumferential direction when the hexagonal wrench Q is held by the tool holding portion 220. I'm in. This makes it possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 220 . On the other hand, since the holding portion 221B is configured to be relatively movable with respect to the main body housing 211, the holding portion 221B may surround a part of the second axis Q2 over the entire circumferential direction as in the present embodiment. In spite of the configuration, the hexagonal wrench Q can be attached to and detached from the O-ring 221 by relatively moving the holding portion 221B with respect to the main body housing 211 . The O-ring is a part that is also used as a sealing member, and various sizes can be manufactured at low cost. Therefore, in the case of this embodiment, a more inexpensive power tool can be realized.

Next, a vibrating tool 300, which is an example of a power tool according to a third embodiment of the present invention, will be described with reference to FIGS. 10 and 11. FIG. The vibrating tool 300 basically has the same configuration as the vibrating tool 1 according to the first embodiment. , the different configurations will be mainly described. In addition, the same configuration as that of the vibration tool 1 has the same effects as those described above.

A vibration tool 300 according to the third embodiment has a housing 310 instead of the housing 2 . Further, the vibration tool 300 has a tool holding portion 320 instead of the tool holding portion 7 .

The housing 310 has a body housing 311 . The body housing 311 forms an outer shell of the vibration tool 300 and has a support portion 311A. Housing 310 is an example of the "housing" in the present invention.

As shown in FIG. 10(c), the support portion 311A has a substantially cylindrical shape that has an opening at its lower portion and extends in the left-right direction. A boss 311B extending in the left-right direction is provided inside the support portion 311A. Boss 311B is an example of a "protrusion" in the present invention.

The tool holding portion 320 has a string 321 made of heat-resistant fibers. The string 321 is formed in an endless shape having a width in the left-right direction. The string 321 is formed into a figure-of-eight shape by deforming diametrically opposite portions of the string 321 radially inward, and is assembled to the main body housing 311 . The radially inwardly deformed portion of the string 321 is inserted through an opening formed in the lower portion of the support portion 311A. As shown in FIG. 10(c), when assembled to the main body housing 311, the string 321 has a held portion 321A forming its upper portion and a holding portion 321B forming its lower portion. A first hole 321a is formed by the inner peripheral surface of the held portion 321A, and a second hole 321b is formed by the inner peripheral surface of the holding portion 321B. The cord 321 is supported by the support portion 311A by inserting the boss 311B through the second hole 321b. The tool holding part 320 is an example of the "tool holding part" in the present invention. The string 321 is an example of the "second holding part" in the present invention. The held portion 321A is an example of the "held portion" in the present invention, and the holding portion 321B is an example of the "holding portion" in the present invention. The first hole 321a is an example of the "first opening" in the present invention, and the second hole 321b is an example of the "second opening" in the present invention.

When attaching the hexagonal wrench Q to the tool holding portion 320, the operator tilts the holding portion 321B of the string 321 to the left as shown in FIG. 11(a). In other words, the holding portion 321B is rotated clockwise in FIG. 11A (the direction opposite to the direction indicated by the arrow X9). That is, the string 321 is rotated so as to be positioned at the retracted position.

Next, the operator inserts the second shaft Q2 from its tip through the second hole 321b as indicated by an arrow X8 in FIG. 11 (a) . At the same time, the operator rotates the holding portion 321B counterclockwise in FIG. 11(a) as indicated by an arrow X9.

Here, as shown in FIG. 10(c), in a state where the hexagonal wrench Q is held by the tool holding portion 320, the axial center Q4 of the second shaft Q2 and the string 321 are arranged so as to overlap each other when viewed from below. It is configured. That is, in a state where the hexagonal wrench Q is held by the tool holding portion 320, the axial center Q4 of the second shaft Q2 and the string 321 are configured to overlap when viewed from the top and bottom. Therefore, in a state where the movement of the hexagonal wrench Q in the direction orthogonal to the vertical direction is restricted by the first holding portion 71 , the string 321 restricts the vertical movement of the hexagonal wrench Q. This can prevent the hexagonal wrench Q from falling off from the tool holding portion 320 even when the body housing 21 vibrates during operation.

Further, as shown in FIG. 10(c), the holding portion 321B surrounds a part of the second axis Q2 in the left-right direction over the entire circumferential direction when the hexagonal wrench Q is held by the tool holding portion 320. I'm in. This makes it possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 320 . On the other hand, since the holding portion 321B is configured to be relatively movable with respect to the main body housing 311, the holding portion 321B may surround a part of the second axis Q2 over the entire circumferential direction as in the present embodiment. In spite of the configuration, the hexagon wrench Q can be attached to and detached from the string 321 by relatively moving the holding portion 321B with respect to the main body housing 311 .

In addition, since the string 321 is used in the present embodiment, the holding portion 321B can be easily moved relative to the main body housing 311 as compared with the case where an elastic body is used for the tool holding portion. becomes.

Next, a vibration tool 400, which is an example of a power tool according to a fourth embodiment of the present invention, will be described with reference to FIGS. 12 and 13. FIG. The vibrating tool 400 basically has the same configuration as the vibrating tool 1 according to the first embodiment. , the different configurations will be mainly described. In addition, the same configuration as that of the vibration tool 1 has the same effects as those described above.

A vibration tool 400 according to the fourth embodiment has a housing 410 instead of the housing 2 . The vibration tool 400 has a tool holding portion 420 instead of the tool holding portion 7 . The vibration tool 400 also has a torsion spring 421G.

The housing 410 has a body housing 411 . The body housing 411 forms an outer shell of the vibration tool 400 and has a support portion 411A. Housing 410 is an example of the "housing" in the present invention.

As shown in FIG. 12 , the support portion 411A is provided at the lower portion of the rear portion of the body housing 411 . A space extending in the left-right direction is defined inside the support portion 411A. An opening 411a is formed in the lower portion of the support portion 411A, and an opening 411b is formed in the right portion of the support portion 411A.

The tool holding portion 420 has a second holding portion 421 . The second holding portion 421 has a sliding portion 421A and a rotating portion 421D. The sliding portion 421A extends in the left-right direction and has a first portion 421B and a second portion 421C. The tool holding part 420 is an example of the "tool holding part" in the present invention. The second holding portion 421 is an example of the "second holding portion" in the present invention.

The first portion 421B is formed in a substantially rectangular parallelepiped shape extending in the left-right direction. The shape of the first portion 421B is formed to be the same as the inner space of the lower right portion of the support portion 411A. The first portion 421B is slidable in the left-right direction within the support portion 411A. The left end of the first portion 421B is in contact with the rotating portion 421D.

The second portion 421C is formed in a substantially rectangular parallelepiped shape extending rightward from the first portion 421B. The cross-sectional shape of the second portion 421C perpendicular to the left-right direction is substantially the same as the shape of the opening 411b of the support portion 411A in side view. In addition, the cross-sectional area perpendicular to the left-right direction of the second portion 421C is smaller than the cross-sectional area perpendicular to the left-right direction of the first portion 421B. Therefore, as shown in FIG. 13, the rightward sliding of the sliding portion 421A is restricted by the inner peripheral surface of the supporting portion 411A. Further, as shown in FIG. 13(a), the second portion 421C extends rightward from the right side surface of the support portion 411A in a state where no external force is applied.

The rotating portion 421D has a contact portion 421E and a holding portion 421F. The contact portion 421E has a substantially flat plate shape extending in the front-rear direction. The contact portion 421E contacts the left end of the sliding portion 421A. The contact portion 421E is provided with shaft portions 421H projecting from its front and rear surfaces. Although not shown, the shaft portion 421H is rotatably supported by the body housing. As a result, the rotating portion 421D can rotate with respect to the main body housing 411 about the axis of the shaft portion 421H.

The holding portion 421F is formed integrally with the contact portion 421E. That is, the holding portion 421F is rotatable with respect to the main body housing 411 about the axis of the shaft portion 421H. A holding hole 421a is formed through the holding portion 421F in its thickness direction.

The torsion spring 421G is wound around the shaft portion 421H, and has one end engaged with the contact portion 421E and the other end engaged with the body housing 411 . The torsion spring 421G biases the rotating portion 421D clockwise in FIG. 13(a). In other words, the torsion spring 421G biases the rotating portion 421D toward the retracted position. As a result, the sliding portion 421A in contact with the contact portion 421E is also biased rightward. Since the hexagonal wrench Q also receives a rightward biasing force from the second portion 421C, rattling between the first holding portion 71 and the hexagonal wrench Q in the left-right direction is suppressed.

When attaching the hexagonal wrench Q to the tool holding portion 420 , the operator inserts the first shaft Q <b>1 of the hexagonal wrench Q through the first holding portion 71 . In this state, the outer peripheral surface of the first shaft Q1 contacts the second portion 421C of the sliding portion 421A, and the first shaft Q1 moves the second portion 421C inward ( left). As a result, as shown in FIG. 13B, the rotating portion 421D rotates about the shaft portion 421H with respect to the main body housing 411. As shown in FIG. That is, the second holding portion 421 moves toward the holding position. In this state, the operator inserts the second shaft Q2 from its tip through the holding hole 421a.

Here, as shown in FIG. 13B, in a state in which the hexagonal wrench Q is held by the tool holding portion 420, the axis Q4 of the second shaft Q2 and the second holding portion 421 are separated from each other in bottom view. configured to overlap. That is, in a state where the hexagonal wrench Q is held by the tool holding portion 420, the axis Q4 of the second shaft Q2 and the second holding portion 421 are configured to overlap when viewed in the vertical direction. Therefore, while movement of the hexagonal wrench Q in a direction orthogonal to the vertical direction is restricted by the first retaining portion 71 , the second retaining portion 421 restricts movement of the hexagonal wrench Q in the vertical direction. As a result, it is possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 420 even when the body housing 21 vibrates during operation.

Further, as shown in FIG. 13B, the holding portion 421F surrounds a part of the second axis Q2 in the left-right direction over the entire circumferential direction when the hexagonal wrench Q is held by the tool holding portion 420. I'm in. This makes it possible to prevent the hexagonal wrench Q from falling off from the tool holding portion 420 . On the other hand, since the holding portion 421F is configured to be relatively movable with respect to the main body housing 411, the holding portion 421F may surround a part of the second axis Q2 over the entire circumferential direction as in the present embodiment. Despite the configuration, the hexagonal wrench Q can be attached to and detached from the second holding portion 421 by relatively moving the holding portion 421F with respect to the main body housing 411 .

Next, a screwdriver 500, which is an example of a power tool according to a fifth embodiment of the present invention, will be described with reference to FIG. The screwdriver 500 is an electric power tool for tightening a fastener such as a screw by using a tip tool (not shown) and driving force of a motor.

A screwdriver 500 according to the fifth embodiment mainly includes a housing 510 , a tool holding portion 520 and an output portion 530 . Moreover, in the present embodiment, the tool holding portion 520 is configured to be able to hold a chuck handle Q' as an example of a replacement tool according to the present invention.

The housing 510 has a body housing 511 forming the outer shell of the screwdriver 500 . The body housing 511 has a support portion 511A.

As shown in FIG. 14(b), the support portion 511A is formed with a groove 511a recessed inwardly of the body housing 511. As shown in FIG.

The tool holding portion 520 has a first holding portion 521 and a second holding portion 522 . The first holding part 521 is formed in a substantially cylindrical shape extending from the front upper part to the rear lower part (hereinafter, the direction in which the first holding part 521 extends is referred to as a predetermined direction), and is integrated with the main body housing 511 at the lower part of the main body housing 511 . is provided in A predetermined direction is an example of a "first direction" in the present invention.

The second holding portion 522 is provided at a position different from that of the first holding portion 521 and configured to cooperate with the first holding portion 521 to hold the chuck handle Q'. The second holding portion 522 is an elastic body such as a thermosetting resin having high heat resistance, and one end thereof is fixed to the groove 511a of the support portion 511A, and the holding portion 522A forming the other end is one end. protrudes in a substantially annular shape from the A holding hole 522a is formed in the holding portion 522A .

The output section 530 mainly has a tip tool attaching/detaching section 531 extending in the front-rear direction. The tip tool attaching/detaching portion 531 has a first cylindrical portion 531A and a second cylindrical portion 531B.

The first cylindrical portion 531A has a substantially cylindrical shape extending in the front-rear direction. An engaged portion 531C is provided on the first cylindrical portion 531A. The engaged portion 531C has a plurality of protrusions projecting from the front surface of the first cylindrical portion 531A at substantially equal intervals in the circumferential direction of the first cylindrical portion 531A.

The second cylindrical portion 531B has a substantially cylindrical shape extending in the front-rear direction. The outer diameter of the second cylindrical portion 531B is configured to be smaller than the outer diameter of the first cylindrical portion 531A. A groove 531a extending in the radial direction of the second cylindrical portion 531B is formed in the second cylindrical portion 531B.

Further, the tip tool attaching/detaching part 531 is provided with a tip tool holding part 531D. The tip tool holding portion 531D extends forward from the front surface of the second cylindrical portion 531B. The tip tool holding part 531D is composed of a plurality of pairs of members that are symmetrical in the left-right direction and the up-down direction. is configured to

The chuck handle Q' has a handle portion Q'1, an extension portion Q'2, an engaging portion Q'3, and a projection portion Q'4.

The handle portion Q'1 is configured in a substantially bar shape having an axis Q'5 extending in a predetermined direction when held by the tool holding portion 520. As shown in FIG. The extending portion Q'2 has a substantially bar shape extending from the handle portion Q'1 in a direction perpendicular to the predetermined direction. The engaging portion Q'3 is provided at the projecting end portion of the extending portion Q'2. The engaging portion Q'3 is formed to be slightly tapered toward its extended end. Although not shown in the drawing, the engaging portion Q'3 has a plurality of protrusions protruding from its tapered surface at approximately equal intervals in the circumferential direction. The projecting portion Q'4 projects in a direction perpendicular to the predetermined direction from the projecting end face of the engaging portion Q'3.

When replacing the tip tool, the operator inserts the protrusion Q'4 of the chuck handle Q' into the groove 531a of the second cylindrical portion 531B of the tip tool attaching/detaching portion 531, and inserts the plurality of engaging portions Q'3. are engaged with the plurality of projections of the engaged portion 531C. In this state, when the operator rotates the handle portion Q'1, the first cylindrical portion 531A and the second cylindrical portion 531B are relatively rotated. As the first cylindrical portion 531A and the second cylindrical portion 531B rotate relative to each other, the plurality of members forming the tip tool holding portion 531D are separated. As a result, the state where the tip tool is held by the tip tool attaching/detaching portion 531 is released, and the operator can replace the tip tool.

When attaching the chuck handle Q′ to the tool holding portion 520 , the operator inserts one end of the handle portion Q′ 1 through the first holding portion 521 . Also, the operator tilts the holding portion 522A of the second holding portion 522 in a predetermined direction. At this time, since the second holding portion 522 is an elastic body such as a thermosetting resin, the holding portion 522A preferably rotates around one end of the second holding portion 522 fixed to the groove 511a of the support portion 511A as a fulcrum. It is possible to transform as if it rotates. That is, the second holding portion 522 can be preferably moved toward the retracted position.

In this state, the operator inserts the other end of the handle portion Q'1 into the holding hole 522a. At this time, the second holding portion 522 rotates the holding portion 522A toward the holding position by its own elastic restoring force. Thereby, the operator can suitably insert the handle portion Q'1 into the holding hole 522a.

Further, as shown in FIG. 14A, the holding portion 522A extends a part of the handle portion Q'1 in the left-right direction over the entire circumferential direction when the chuck handle Q' is held by the tool holding portion 520. It surrounds. This makes it possible to prevent the chuck handle Q′ from falling off from the tool holding portion 520 . On the other hand, since the holding portion 522A is configured to be relatively movable with respect to the main body housing 511 , the holding portion 522A surrounds a portion of the handle portion Q'1 over the entire circumferential direction as in the present embodiment. Despite this configuration, the chuck handle Q' can be attached to and detached from the second holding portion 522 by moving the holding portion 522A relative to the main body housing 511. As shown in FIG.

The present invention has been described above based on the embodiment and the modified examples. It should be understood by those skilled in the art that the present embodiment is merely an example, and that various modifications can be made to the combination of each component, etc., and that such modifications are also within the scope of the present invention. In the present embodiment, a vibrating tool has been described as an example of a power tool. It can also be applied to a power tool that requires a special tool when replacing the tool, or a power tool such as an impact driver in which the attached tip tool itself has a shaft portion.

Further, in the present embodiment, a tip tool or a tool such as a wrench used when exchanging a tip tool is given as an example of a tool holder that can be attached as a tool holder. It is not limited to these as long as it has a shaft portion. For example, a cleaning brush used for maintenance, a light used as illumination during work, or the like may be detachably attached to the main body. In this case, it is possible to improve workability during maintenance and work in dark places.

DESCRIPTION OF SYMBOLS 1,200,300,400... Vibration tool 500... Screw driver 2,210,310,410,510...Housing 3...Motor 4...Control part 5...Power transmission part 6...Output shaft part 7 , 220, 320, 420, 520... Tool holding portion, 530... Output portion

Claims (12)

a motor;
a housing that houses the motor;
a tool holding part provided in the housing and capable of holding a tool,
The tool has a first shaft portion having an axis extending in a first direction and a second shaft portion having an axis extending in a second direction when held by the tool holding portion,
The tool holding portion includes a first holding portion engageable with the first shaft portion, and a second holding portion movable relative to the housing in the second direction and engaged with the second shaft portion. and
The second holding portion is configured to be able to change its position by the relative movement between a holding position engaged with the second shaft portion and a retracted position spaced apart from the second shaft portion,
The second holding portion cooperates with the first holding portion to hold the tool so that it cannot be removed when positioned at the holding position, and the tool holding portion when positioned at the retracted position. A power tool configured to allow the tool to be removed from the power tool. 2. A power tool according to claim 1, wherein said second holding portion is an elastic body separate from said housing. The second holding portion is provided at a position different from the first holding portion, and surrounds at least a portion of the second shaft portion over the entire circumferential direction when the tool is held by the tool holding portion. configured to be able to hold the tool in cooperation with the first holding part,
3. The tool according to claim 2, wherein the tool can be held by the first holding portion by relatively moving the first holding portion and the tool in the first direction. power tools. The first holding portion allows the tool to move in the first direction with respect to the housing while the tool is held by the tool holding portion, and rotates about the axis of the first shaft portion. The second holding portion restricts the movement of the tool in the first direction with respect to the housing while the tool is held by the tool holding portion . 4. The power tool according to claim 1, wherein the power tool is configured to restrict rotation of the first shaft about an axis. The power tool according to claim 4 , wherein the tool can be held by the second holding portion by moving the second holding portion from the retracted position to the holding position . The first holding portion is configured in a cylindrical shape into which the first shaft portion can be inserted,
The second holding portion is movable between the holding position and the retracted position with the first shaft portion inserted into the first holding portion, and the holding position is relative to the housing. is a position where movement of the tool with respect to the housing in the first direction and rotation about the axis of the first shaft portion can be restricted, and the retracted position is a position spaced apart from the second shaft portion. 6. The power tool of claim 5, wherein: The housing is provided with a protrusion,
The second holding portion is provided separately from the housing, and the second holding portion is a held portion formed with a first opening that opens in a projecting direction of the projection and receives and fixes the projection. 7. The power tool according to claim 6, further comprising: a holding portion that opens in the protruding direction and has a second opening that receives at least a portion of the second shaft portion. 8. The second holding portion is movable with respect to the housing between the holding position and the retracted position by its own elastic force or by receiving a biasing force from the outside. The power tool described in . 8. The power tool according to claim 7, wherein said first opening and said second opening open in the same direction. The power tool according to claim 7, wherein a direction in which the second opening opens at the holding position and a direction in which the second opening opens at the retracted position are different from each other. further comprising a tip tool attachment/detachment part supported by the housing to which the tip tool can be attached and detached;
11. The tool according to any one of claims 1 to 10, wherein the tool is at least one of the tip tool and a replacement tool for attaching/detaching the tip tool to/from the tip tool attaching/detaching portion. Power tools as described in paragraph. further comprising a tip tool attachment/detachment part supported by the housing to which the tip tool can be attached and detached;
The tool is at least one of the tip tool and a replacement tool for attaching/detaching the tip tool to/from the tip tool attaching/detaching portion,
The tip tool has a first tip tool axis and a second tip tool axis extending in different directions, and the replacement tool has a first replacement tool axis and a second replacement tool axis respectively extending in different directions. have
The first holding portion is configured to be able to hold at least one of the first tip tool shaft and the first replacement tool shaft, and the second holding portion is configured to hold the second tip tool shaft and the first replacement tool shaft. 11. The power tool according to any one of claims 1, 3 to 10, wherein at least one of the two replacement tool shafts can be held.

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