JP7755155B2 - Work equipment - Google Patents

Description

The present invention relates to a work machine that includes a housing that supports a motor and an operating unit, and a battery pack that supplies power to the motor.

An example of a work machine equipped with a housing that supports a motor and a moving part, and a battery pack that supplies power to the motor, is described in Patent Document 1. The electrical equipment (work machine) described in Patent Document 1 has a first housing, a second housing, and a battery pack.

The battery pack is fixed to the second housing, which is attached to the first housing via an annular elastic body. This reduces the transmission of vibration between the first and second housings, thereby stabilizing the electrical connection between the battery pack and the second housing.

Patent No. 6849088

The technology described in Patent Document 1 above involves providing an annular elastic body between the first and second housings to prevent the first and second housings from directly colliding with each other.

However, for example, in a nail gun or the like equipped with a striking unit that moves linearly, it is sufficient to place the elastic body at least in the direction of movement of the striking unit (the direction in which the impact is generated). Therefore, if the annular elastic body described in Patent Document 1 were to be used in a nail gun or the like, it would be necessary to secure space for installing a relatively large elastic body, which could lead to a complicated structure.

Furthermore, because the second housing is configured to be able to move relative to the first housing in directions other than the direction in which the impact occurs to the same extent as the direction in which the impact occurs, there is a possibility that the second housing may undergo complex movements such as rotating or moving wildly relative to the first housing, which could reduce durability particularly in devices such as nail guns and hammer drills that generate impacts in specific directions.

The object of the present invention is to provide a work machine that can simplify its structure and improve its durability.

In one aspect of the present invention, a device includes a motor, an operating unit having a moving part that moves in response to the driving force of the motor, a housing that supports the motor and the operating unit, a battery pack that supplies power to the motor, a battery mounting part that is freely movable relative to the housing in the direction of movement of the moving part and to which the battery pack is detachably attached, a guide part that guides the movement of the battery mounting part, and an elastic body that is provided between the housing and the battery mounting part, and the elastic body is compressed and elastically deformed in the direction of movement of the battery mounting part when the battery mounting part moves relative to the housing, and expands in a direction that repels the rotation of the battery mounting part, thereby preventing the battery mounting part from rotating relative to the guide part.
In another aspect of the present invention, a battery pack is provided, which includes a motor, an operating unit having a moving part that moves by receiving a driving force from the motor, a housing that supports the motor and the operating unit, a battery pack that supplies power to the motor, a battery mounting part that is provided to be movable relative to the housing in the direction of movement of the moving part and to which the battery pack is detachably attached, a guide part that guides the movement of the battery mounting part, and an elastic body that is provided between the housing and the battery mounting part, wherein the elastic body elastically deforms when the battery mounting part moves relative to the housing and generates a repulsive force in a direction opposite to the direction in which the battery mounting part attempts to rotate relative to the guide part, thereby rotating the battery mounting part relative to the guide part. the battery pack is arranged on one side of the housing in a direction perpendicular to the direction of movement of the battery mounting part, the guide part includes a battery mounting part side rail provided on the battery mounting part and arranged between the housing and the battery pack, the elastic body includes a first elastic body arranged on one side of the battery mounting part side rail in the direction of movement of the battery mounting part, and a second elastic body arranged on the other side of the battery mounting part side rail in the direction of movement of the battery mounting part, the first elastic body being arranged on one side of the battery mounting part side rail in the direction of movement of the battery mounting part, and the second elastic body being arranged on the other side of the battery mounting part side rail in the direction of movement of the battery mounting part.
In another aspect of the present invention, a battery pack is provided, which includes a motor, an operating unit having a moving part that moves by receiving a driving force of the motor, a housing that supports the motor and the operating unit, a battery pack that supplies power to the motor, a battery mounting part that is provided to be movable relative to the housing in the direction of movement of the moving part and to which the battery pack is detachably attached, a guide part that guides movement of the battery mounting part, and an elastic body that is provided between the housing and the battery mounting part, wherein the elastic body elastically deforms when the battery mounting part moves relative to the housing and generates a repulsive force in a direction opposite to the direction in which the battery mounting part tries to rotate relative to the guide part, thereby repulsing the battery mounting part relative to the guide part. The guide portion includes a battery mounting portion side rail that is provided on the battery mounting portion and is arranged between the housing and the battery pack, and the elastic body includes a first elastic body that is arranged on one side of the battery mounting portion side rail in the movement direction of the battery mounting portion, and a second elastic body that is arranged on the other side of the battery mounting portion side rail in the movement direction of the battery mounting portion, the battery pack is arranged on one side of the housing in a direction perpendicular to the movement direction of the battery mounting portion, and the first elastic body is arranged in a position in the orthogonal direction that overlaps with the center of gravity of the battery pack including the battery mounting portion, or on the opposite side of the center of gravity from the guide portion.
In another aspect of the present invention, a device includes a motor, an operating unit having a moving part that moves by receiving a driving force from the motor, a housing that supports the motor and the operating unit, a battery pack that supplies power to the motor, a battery attachment part that is provided to be movable relative to the housing in the direction of movement of the moving part and to which the battery pack is detachably attached, a guide part that guides movement of the battery attachment part, and an elastic body that is provided between the housing and the battery attachment part, wherein the elastic body elastically deforms when the battery attachment part moves relative to the housing and generates a repulsive force in a direction opposite to the direction in which the battery attachment part attempts to rotate relative to the guide part, thereby preventing the battery attachment part from rotating relative to the guide part, and the moving part is a striking part that strikes a stopper, and the operating unit is The battery pack is provided with a pressing portion that generates a pressing force on the striking portion toward one side of the movement direction of the moving portion, causing the striking portion to strike the stopper, and a lifting portion that lifts the striking portion toward the other side of the movement direction of the moving portion against the pressing force of the pressing portion, the battery pack is arranged on one side of the housing in a direction perpendicular to the movement direction of the moving portion, the guide portion is provided on the battery mounting portion and has a battery mounting portion side rail that is arranged between the housing and the battery pack, the elastic body includes a first elastic body that is arranged on one side of the battery mounting portion side rail in the movement direction of the moving portion, and a second elastic body that is arranged on the other side of the battery mounting portion side rail in the movement direction of the moving portion, and the first elastic body is arranged on one side of the battery mounting portion side rail in the perpendicular direction.

According to the present invention, the elastic body elastically deforms when the battery attachment section moves relative to the housing, preventing the battery attachment section from rotating relative to the guide section. This also simplifies the structure of the elastic body. Furthermore, the guide section is prevented from being gouged when the battery attachment section moves, improving durability.

1 is a side view showing the appearance of a driving machine according to a first embodiment. FIG. 2 is a partial cross-sectional view showing the internal structure of the driving tool of FIG. 1 . FIG. 10 is a diagram showing an arrangement structure of elastic bodies. FIG. 2 is a perspective view showing the structure around the battery pack. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. 4 is a cross-sectional view showing a fixing structure of the housing, the battery mounting portion, and the battery pack. FIG. FIG. 4 is a plan view of the battery mounting section as seen from the housing side. FIG. 10 is a perspective view of the housing with the battery mounting portion removed, as viewed from the elastic body side. FIG. 10 is a diagram showing a first movement state of the battery unit relative to the housing. FIG. 10 is a diagram showing a second movement state of the battery unit relative to the housing. 5A and 5B are views showing a driving machine according to a second embodiment of the present invention; 5A and 5B are views showing a driving machine according to a third embodiment of the present invention; 5A and 5B are views showing a driving machine according to a fourth embodiment of the present invention; FIG. 10 is a diagram corresponding to FIG. 3 and showing a driving machine according to a fifth embodiment. 3A and 3B are diagrams illustrating driving machines according to a sixth embodiment (solid lines) and a seventh embodiment (dashed lines).

The following describes in detail the embodiments of the present invention using the drawings.

First Embodiment
Figure 1 is a side view showing the appearance of the driving machine of embodiment 1, Figure 2 is a partial cross-sectional view showing the internal structure of the driving machine of Figure 1, Figure 3 is a diagram showing the arrangement of the elastic body, Figure 4 is an oblique view showing the structure around the battery pack, Figure 5 is a cross-sectional view along line A-A in Figure 3, Figure 6 is a cross-sectional view showing the fixing structure of the housing, battery attachment section and battery pack, Figure 7 is a plan view of the battery attachment section seen from the housing side, Figure 8 is an oblique view of the housing with the battery attachment section removed seen from the elastic body side, Figure 9 is a diagram showing a first movement state of the battery unit relative to the housing, and Figure 10 is a diagram showing a second movement state of the battery unit relative to the housing.

<Overview of the driver>
1 and 2, a driving machine (working machine) 10 is a tool that shoots nails 11 as fasteners, and is commonly called a "nail gun." The driving machine 10 includes a driving machine body 20 and a magazine 60. A plurality of nails 11 are loaded inside the magazine 60, and these nails 11 are supplied toward the driving machine body 20. Thus, the nails 11 are driven into a workpiece W, such as wood, by the operation of the driving machine body 20.

The driving tool body 20 includes a housing 21 formed into a roughly annular shape by injection molding a resin material such as plastic. Forming the housing 21 into a roughly annular shape allows the operator to hold the housing 21 in a well-balanced manner. It also increases the rigidity of the housing 21.

The housing 21 is hollow and is formed by butting together two separate housing halves 22, 23 (see Figures 5 and 8). Note that Figures 2, 3, 4, 9, and 10 show only one of the pair of housing halves 22, 23 to make the internal structure of the housing 21 easier to understand.

<About housing>
2, the housing 21 is formed of a total of four sections. Specifically, the housing 21 includes a main body housing section 24, a handle section 25, a motor housing section 26, and a battery unit mounting section 27.

The main body housing section 24 extends in the Y-axis direction, and the handle section 25 extends from approximately the longitudinal center of the main body housing section 24 so as to be inclined toward one side in the X-axis direction (the right side in the figure), which intersects with the Y-axis direction. The motor housing section 26 is spaced apart from the handle section 25 to one side in the Y-axis direction (the lower side in the figure), and extends from the main body housing section 24 to one side in the X-axis direction. The battery unit attachment section 27 is spaced apart from the main body housing section 24 to one side in the X-axis direction, connecting the handle section 25 and the motor housing section 26.

Here, the X-axis direction is the direction in which the surface of the workpiece W into which the nails 11 are driven expands, and is also the longitudinal direction of the magazine 60. The Y-axis direction is the direction in which the nails 11 are driven, and is perpendicular to the surface of the workpiece W. The Z-axis direction is perpendicular to both the X-axis direction and the Y-axis direction, and is the direction in which the pair of housing segments 22, 23 butt together (see Figures 5 and 8).

The main body housing portion 24, handle portion 25, motor housing portion 26, and battery unit attachment portion 27 that form the housing 21 are connected to each other in a generally annular shape. Therefore, an opening 28 is formed in the approximate center of the housing 21, where the operator's fingers (not shown) can be placed.

As shown in Figure 2, a drive mechanism (operating unit) 30 is housed inside the main body housing portion 24. The drive mechanism 30 receives driving force from a brushless motor (motor) 40 housed inside the motor housing portion 26 and operates to eject nails 11 to one side in the Y-axis direction (toward the workpiece W). In this way, the housing 21 supports the brushless motor 40 and drive mechanism 30.

<About the drive mechanism>
The drive mechanism 30 includes a nose 31, a cylinder 32, and a pressure accumulator vessel 33. The nose 31 is formed in a stepped, generally cylindrical shape and is made of metal. The nose 31 is disposed on one side of the main body housing 24 in the Y axis direction and has a nose mounting cylinder 31a and an injection portion 31b extending from the nose mounting cylinder 31a to one side in the Y axis direction.

A female thread (not shown) is formed on the radially inner side of the nose mounting cylinder 31a, and one side of the cylinder 32 in the Y-axis direction is threadedly connected to this female thread. A rubber bumper (shock absorber) 31c formed in a roughly cylindrical shape is housed inside the nose mounting cylinder 31a.

The piston 34a, which is freely movable inside the cylinder 32, collides with the bumper 31c as it descends from top dead center to bottom dead center. Specifically, the bumper 31c elastically deforms upon collision with the piston 34a, absorbing the kinetic energy of the piston 34a. This prevents a heavy load from being placed on the operator.

The ejection portion 31b extends from the nose mounting tube portion 31a to one side in the Y-axis direction. A driver blade 34b, which is a generally long rod extending in the Y-axis direction, is movable inside the ejection portion 31b. The driver blade 34b is integral with the piston 34a and protrudes from one side in the Y-axis direction of the main body housing portion 24 when the piston 34a descends. This drives the nail 11 into the workpiece W.

A pinwheel 35 that lifts the driver blade 34b toward the other side in the Y-axis direction is rotatably housed inside the ejection section 31b. The pinwheel 35 has multiple pins (not shown), which can be engaged with multiple protrusions (racks) 34c provided on the driver blade 34b.

The pinwheel 35 is driven to rotate by the driving force of the brushless motor 40, and has the function of lifting the striking part 34 (piston 34a and driver blade 34b) to the other side of its movement direction (the other side in the Y-axis direction) against the pressing force of the pressure chamber 33a of the pressure accumulator vessel 33. The pinwheel 35 corresponds to the lifting part in this invention.

The pressure accumulator vessel 33 is disposed on the other side of the cylinder 32 in the Y axis direction. Specifically, the pressure accumulator vessel 33 seals the portion of the cylinder 32 on the other side in the Y axis direction. A pressure chamber 33a is formed inside the pressure accumulator vessel 33, and the pressure chamber 33a is filled with gas at a pressure higher than atmospheric pressure. Here, the gas filled inside the pressure chamber 33a is, for example, pressurized air or an inert gas (such as nitrogen gas). In this embodiment, the pressure chamber 33a is filled with an inert gas.

This allows the piston 34a, which is freely movable inside the cylinder 32, to move vigorously from top dead center to bottom dead center due to the pressure in the pressure chamber 33a. In other words, the pressure accumulator container 33 generates a pressing force on the piston 34a to one side in the Y-axis direction, causing the driver blade 34b to strike the nail 11. The pressure accumulator container 33 corresponds to the pressing portion in this invention.

A striking part 34 consisting of a piston 34a and a driver blade 34b is housed movably within the cylinder 32, extending in the axial direction (Y-axis direction). Specifically, the striking part 34 is movable between the top dead center indicated by the two-dot chain line in Figure 2 and the bottom dead center indicated by the solid line in Figure 2. The striking part 34 corresponds to the moving part in this invention.

The piston 34a is formed in a generally cylindrical shape with a bottom, and the outer diameter of the piston 34a is slightly smaller than the inner diameter of the cylinder 32. A seal member 34d is attached to the outer periphery of the piston 34a, sealing the pressure accumulator vessel 33 side and the bumper 31c side of the piston 34a. Furthermore, the base end of a driver blade 34b is fixed to the piston 34a, and the driver blade 34b extends from the center of the piston 34a to one side in the Y-axis direction.

The driver blade 34b is formed in a roughly rod-like shape, and its base end (the other side in the Y-axis direction) is fixed to the piston 34a. Meanwhile, the tip end (one side in the Y-axis direction) of the driver blade 34b is freely movably inserted into the interior of the injection section 31b. As the piston 34a moves from top dead center to bottom dead center, the driver blade 34b drives the nail 11 supplied to the driving tool body 20 into the workpiece W.

<About the peripheral structure of the brushless motor>
A brushless motor 40 is housed inside the motor housing portion 26. The brushless motor 40 is formed in a substantially cylindrical shape and includes a stator 41 disposed radially outward, and a rotor 42 rotatably disposed radially inward of the stator 41. A rotation shaft 42a is fixed to the rotation center of the rotor 42, and the rotation shaft 42a extends in the X-axis direction.

A controller 43 is electrically connected to the brushless motor 40, and the controller 43 is disposed inside the housing 21 between the brushless motor 40 and the battery unit 50. A trigger switch 44 and the battery unit 50 are further electrically connected to the controller 43.

The trigger switch 44 is provided on the handle portion 25 and can be slid in the Y-axis direction by the operator's finger. This causes the controller 43 to supply power from the battery unit 50 to the brushless motor 40 based on the input of an operation signal (ON signal) from the trigger switch 44.

The battery unit 50 is also slidably mounted in the Y-axis direction relative to the battery unit mounting section 27. This prevents vibrations generated during operation of the drive mechanism 30 from being transmitted to the battery unit 50.

Furthermore, a planetary gear reducer 45 is provided inside the motor housing portion 26, on the pinwheel 35 side of the brushless motor 40. In other words, the brushless motor 40, planetary gear reducer 45, and pinwheel 35 are lined up in this order in the X-axis direction. The other X-axis side of the rotating shaft 42a that forms the brushless motor 40 is connected to the input side of the planetary gear reducer 45 so that power can be transmitted. Meanwhile, the pinwheel 35 is connected to the output side of the planetary gear reducer 45 so that power can be transmitted.

In this way, the planetary gear reducer 45, located between the brushless motor 40 and the pinwheel 35, reduces the rotational speed of the rotating shaft 42a to a predetermined speed and transmits the high-torque rotational force to the pinwheel 35. This makes it possible for even a small brushless motor 40 to lift the striking part 34 toward the other side in the Y-axis direction against the internal pressure of the pressure chamber 33a.

Here, the pinwheel 35 engages with the driver blade 34b when the piston 34a is at bottom dead center, and receives the driving force of the brushless motor 40 to move the piston 34a from bottom dead center to top dead center. Then, when the piston 34a reaches top dead center, the engagement between the pinwheel 35 and the driver blade 34b is released. As a result, the internal pressure of the pressure chamber 33a causes the striking part 34, including the piston 34a and driver blade 34b, to move vigorously from top dead center to bottom dead center.

<About the magazine>
1, the magazine 60 includes a magazine case 62 and a feeder 63 movably provided on the magazine case 62. The magazine case 62 is formed in a substantially rectangular parallelepiped shape and is inclined toward one side in the X-axis direction (the right side in the figure) so as to be substantially parallel to the handle portion 25 of the housing 21 (so that the nails 11 inside the magazine case 62 are substantially parallel to the driver blade 34b).

The magazine case 62 is adjacent to the motor housing portion 26, and the front end portion (the portion on the other side in the X-axis direction) of the magazine case 62 is assembled to the ejection portion 31b (see Figure 2) of the nose 31. In contrast, the rear end portion (the portion on one side in the X-axis direction) of the magazine case 62 is fixed to the motor housing portion 26.

A plurality of nails 11 are stored in a row inside the magazine case 62 (see Figure 1), and these nails 11 are movable inside the magazine case 62 in the longitudinal direction of the magazine 60. The feeder 63 also functions to supply the plurality of nails 11 toward the ejection unit 31b. Specifically, the feeder 63 is provided with a biasing spring (not shown), and the spring force of the biasing spring presses the plurality of nails 11 toward the front end of the magazine 60. As a result, the nails 11 are supplied to the ejection unit 31b when the piston 34a (see Figure 2) reaches top dead center.

<About the battery unit>
1 to 6 , a battery unit 50 is mounted in the battery unit mounting portion 27 that forms the housing 21. A guide rail portion 70 extending in the Y-axis direction is provided between the battery unit mounting portion 27 and the battery unit 50. The battery unit 50 is slidable relative to the battery unit mounting portion 27 via the guide rail portion 70.

As such, the housing 21 is provided with a guide rail portion 70 that guides the movement of the battery unit 50 relative to the housing 21, allowing the battery unit 50 to move in the movement direction of the striking portion 34 (Y-axis direction) relative to the battery unit mounting portion 27.

The battery unit 50 includes a battery pack 51 that supplies power to the brushless motor 40, and a battery mounting section 52 that is movable relative to the battery unit mounting section 27 in the direction of movement of the striking section 34 and to which the battery pack 51 is detachably attached.

Here, the battery pack 51 is a secondary battery such as a lithium-ion battery, and is detachable from the battery mounting section 52 in the Y-axis direction. Specifically, as shown in FIG. 6, a pair of battery pack side rails 51a integrally formed with the battery pack 51 and a pair of battery mounting section side first rails 52a integrally formed with the battery mounting section 52 are slidably engaged with each other.

Note that in Figure 6, the interior of the battery pack 51 is not shown to make it easier to understand the engagement relationship between the battery unit mounting portion 27, the battery mounting portion 52, and the battery pack 51.

When the battery pack 51 is attached to the battery attachment section 52, as shown in Figure 3, the battery side terminal 51b provided on the battery pack 51 and the attachment section side terminal 52b provided on the battery attachment section 52 are electrically connected to each other.

To remove the battery pack 51 from the battery mounting section 52, press the release button 51c on the battery pack 51 and pull the battery pack 51 out of the battery mounting section 52 to the other side in the Y-axis direction.

As shown in Figures 3, 4, and 7, the battery mounting section 52 is pre-assembled to the battery unit mounting section 27 when assembling the housing 21, and is formed with a stepped shape in the X-axis direction. Specifically, the battery mounting section 52 has, from the battery pack 51 side (bottom side in Figure 3), a lower step 52c, a middle step 52d, and an upper step 52e.

The guide rail section 70 is located in the middle section 52d of the battery mounting section 52. That is, the lower section 52c is located on the battery pack 51 side of the guide rail section 70, and the upper section 52e is located on the opposite side of the guide rail section 70 from the battery pack 51.

As shown in FIG. 6, the guide rail portion 70 is formed from a battery mounting portion-side second rail 52f provided in the middle section 52d of the battery mounting portion 52 and a housing-side rail 27a provided in the battery unit mounting portion 27 of the housing 21.

Two rail sets are provided, each consisting of a battery attachment section side second rail 52f and a housing side rail 27a. These rail sets are each formed to extend in the movement direction of the striking section 34 (the Y-axis direction) and are arranged opposite each other in the Z-axis direction, which intersects with the Y-axis direction. The battery attachment section side second rail 52f corresponds to the battery attachment section side rail in this invention.

The housing side rail 27a is positioned to one side (lower) in the X-axis direction than the battery mounting unit side second rail 52f. A rail section elastic body 84 is attached to the housing side rail 27a, protruding above the top surface of the housing side rail 27a. Therefore, the rail section elastic body 84 is sandwiched and compressed in the X-axis direction between the housing side rail 27a and the battery mounting unit side second rail 52f.

In this way, by arranging a pair of rail sets consisting of the battery attachment section second rail 52f and the housing side rail 27a in the middle section 52d of the battery attachment section 52, the battery attachment section 52 (battery unit 50) is able to move freely in the movement direction of the striking section 34 (Y-axis direction) relative to the battery unit attachment section 27 (housing 21) and is unable to fall off.

Here, the guide rail portion 70 restricts the movement of the battery mounting portion 52 in any direction other than the movement direction of the striking portion 34. In other words, the battery mounting portion 52 can only move in the movement direction of the striking portion 34 (Y-axis direction) relative to the battery unit mounting portion 27, and movement in other directions (X-axis direction and Z-axis direction) is restricted. The guide rail portion 70 corresponds to the guide portion in this invention.

As shown in Figures 3, 4, and 7, the lower section 52c of the battery mounting section 52 is provided with a first abutment wall 52g that abuts against the first sub-elastic body 81. The first abutment wall 52g presses against the first sub-elastic body 81 when the battery unit 50 moves along the guide rail section 70 relative to the housing 21 to one side in the Y-axis direction (to the right in Figure 3). However, the first abutment wall 52g is in contact with the first sub-elastic body 81 when the striking section 34 is stopped (the driving tool 10 is not operating).

In addition, the upper section 52e of the battery mounting section 52 is provided with a second abutment wall 52h that abuts against the second sub-elastic body 82. The second abutment wall 52h presses against the second sub-elastic body 82 when the battery unit 50 moves along the guide rail section 70 relative to the housing 21 toward the other side in the Y-axis direction (left side in Figure 3). However, the second abutment wall 52h is in contact with the second sub-elastic body 82 when the striking section 34 is stopped (when the driving tool 10 is not operating).

Furthermore, a first elastic body support portion 52k formed in a generally L-shape is provided between the lower section 52c and the middle section 52d of the battery mounting portion 52. The first elastic body support portion 52k is capable of supporting the main elastic body 83 from two directions: the other side in the Y-axis direction and one side in the X-axis direction. Specifically, the first elastic body support portion 52k includes a third abutment wall 52m that abuts against the main elastic body 83 from the other side in the Y-axis direction, and a fourth abutment wall 52n that abuts against the main elastic body 83 from one side in the X-axis direction.

The third abutment wall 52m presses against the main elastic body 83 when the battery unit 50 moves along the guide rail portion 70 relative to the housing 21 to one side in the Y-axis direction (to the right in Figure 3). The third abutment wall 52m is in contact with the main elastic body 83 when the striking section 34 is stopped (when the driving tool 10 is not operating).

On the other hand, the main elastic body 83 is pressed (compressed) in the Y-axis direction by the third abutment wall 52m, and the main elastic body 83 expands in the X-axis direction, causing the main elastic body 83 to be pressed against the fourth abutment wall 52n from the other side in the X-axis direction. The operation (compression and expansion) and function of the main elastic body 83 will be described in detail later.

In this way, when the striking section 34 is stopped, the battery attachment section 52 is in contact with all of the first sub-elastic body 81, the second sub-elastic body 82, and the main elastic body. This effectively prevents the battery unit 50 from wobbling in the Y-axis direction along the guide rail section 70. This prevents the operator from feeling uncomfortable when holding the driving tool 10, for example, due to the battery unit 50 wobbling.

Here, the first sub-elastic body 81, the second sub-elastic body 82, and the main elastic body 83 are all formed in a roughly barrel shape from an elastic material such as rubber, and all have the same shape. The main elastic body 83 corresponds to the elastic body and first elastic body in the present invention, the first sub-elastic body 81 corresponds to the elastic body and first elastic body in the present invention, and the second sub-elastic body 82 corresponds to the elastic body and second elastic body in the present invention. The first sub-elastic body 81, the second sub-elastic body 82, and the main elastic body 83 are all located between the housing 21 and the battery attachment section 52.

<About the battery unit attachment area>
3 to 5 and 8, the battery unit mounting section 27 is provided with a second elastic body support portion 27b formed in a generally L-shape that supports one main elastic body 83. The second elastic body support portion 27b is capable of supporting the main elastic body 83 from two directions, one side in the Y axis direction and the other side in the X axis direction. Specifically, the second elastic body support portion 27b includes a fifth abutment wall 27c that abuts against the main elastic body 83 from one side in the Y axis direction, and a sixth abutment wall 27d that abuts against the main elastic body 83 from the other side in the X axis direction.

In this way, when the battery mounting section 52 is assembled to the battery unit mounting section 27, the main elastic body 83 is surrounded by the second elastic body support section 27b on the housing 21 side and the first elastic body support section 52k on the battery unit 50 side. The main elastic body 83 can be supported by the third abutment wall 52m, the fourth abutment wall 52n, the fifth abutment wall 27c, and the sixth abutment wall 27d.

Here, the third abutment wall 52m and the fifth abutment wall 27c face each other in the Y-axis direction, and the fourth abutment wall 52n and the sixth abutment wall 27d face each other in the X-axis direction. The main elastic body 83 is positioned on one side of the movement direction of the battery mounting section 52 (one side in the Y-axis direction), and when the striking section 34 is stopped (the driving tool 10 is in an inoperative state), it is in contact with both the third abutment wall 52m and the fifth abutment wall 27c, and also with either the fourth abutment wall 52n or the sixth abutment wall 27d.

In other words, the diameter D (see Figure 10) of the main elastic body 83 is smaller than the distance S (see Figure 10) between the fourth abutment wall 52n and the sixth abutment wall 27d (D < S). This allows the battery unit 50 (battery mounting section 52) to move smoothly along the guide rail section 70 (in the Y-axis direction).

As shown in Figures 3 to 5 and 8, the battery unit mounting section 27 is provided with a first sub-elastic body holding section 27e that holds one first sub-elastic body 81. The first sub-elastic body holding section 27e is located on one side in the Y-axis direction of the second elastic body support section 27b and on one side in the X-axis direction of the guide rail section 70.

In other words, the first sub-elastic body 81 held by the first sub-elastic body holding portion 27e is positioned on one side in the movement direction of the battery attachment portion 52 (one side in the Y-axis direction). The first sub-elastic body 81 is also positioned on the battery pack 51 side of the guide rail portion 70.

The first sub-elastic body holding portion 27e opens toward the first abutment wall 52g of the battery mounting portion 52, and approximately half of the first sub-elastic body 81 is exposed from this opening toward the first abutment wall 52g.

The battery unit mounting section 27 is also provided with a second sub-elastic body holding section 27f that holds two second sub-elastic bodies 82. The second sub-elastic body holding section 27f is located on the other side of the second elastic body support section 27b in the Y-axis direction and on the other side of the guide rail section 70 in the X-axis direction.

In other words, the second sub-elastic body 82 held by the second sub-elastic body holding portion 27f is positioned on the other side of the movement direction of the battery attachment portion 52 (the other side in the Y-axis direction). The second sub-elastic body 82 is also positioned on the opposite side of the guide rail portion 70 from the battery pack 51.

The second sub-elastic body holding portion 27f opens toward the second abutment wall 52h of the battery mounting portion 52, and approximately half of the second sub-elastic body 82 is exposed from this opening toward the second abutment wall 52h.

<Vibration absorption operation>
Next, the operation of the driving tool 10 configured as described above, in particular the vibration absorbing operation by the main elastic body 83, the first sub-elastic body 81 and the second sub-elastic body 82 will be described in detail with reference to the drawings.

<First moving state>
When the trigger switch 44 is operated by the operator, the piston 34a of the striking part 34, which is at the top dead center, moves vigorously toward the bottom dead center due to the pressure in the pressure chamber 33a, causing the driver blade 34b of the striking part 34 to strike the nail 11, driving the nail 11 into the workpiece W (see FIG. 2).

At this time, a large reaction force acts in the direction opposite to the striking direction of the striking section 34. Specifically, as shown in Figure 9, the entire nail driver 10 moves in the direction indicated by the solid arrow M1, i.e., in the direction opposite to the driving direction of the nail 11 (the other Y-axis direction).

The relatively heavy battery unit 50 then tends to stay in place due to the law of inertia. As a result, the battery unit 50 moves to one side in the Y-axis direction relative to the housing 21 via the guide rail portion 70. As a result, both the main elastic body 83 and the first sub-elastic body 81 are pressed and compressed (elastically deformed).

The main elastic body 83 is sandwiched between the third abutment wall 52m and the fifth abutment wall 27c and compressed in the Y-axis direction. The first sub-elastic body 81 is sandwiched between the first abutment wall 52g and the first sub-elastic body holder 27e and compressed in the Y-axis direction.

As a result, the impact generated when striking the striking portion 34 is absorbed by both the main elastic body 83 and the first sub-elastic body 81. This reduces the burden on the operator and stabilizes the electrical connection between the battery side terminal 51b and the attachment portion side terminal 52b (see Figure 3).

Here, the center of gravity G of the battery pack 51, including the battery mounting section 52, is located on one side of the guide rail section 70 in the X-axis direction, away from the guide rail section 70. As a result, although the battery unit 50 moves along the guide rail section 70, it also attempts to rotate around the center of gravity G, as shown by arrow R in Figure 9. Specifically, as the striking section 34 strikes, the battery mounting section 52 attempts to rotate in a manner that gouges into the guide rail section 70.

At this time, the main elastic body 83 is compressed by the third abutment wall 52m and the fifth abutment wall 27c in the movement direction (Y-axis direction) of the battery mounting section 52, and is crushed until the diameter dimension D along the Y-axis direction becomes the smaller diameter dimension d1 (d1<D). Meanwhile, the main elastic body 83 expands in the X-axis direction, and the diameter dimension d2 along the X-axis direction becomes larger than the distance S (see Figure 10) between the fourth abutment wall 52n and the sixth abutment wall 27d (d2>S).

As a result, the battery mounting section 52 is pressed to one side in the X-axis direction by a pressing force F. In other words, the main elastic body 83 expands in a direction that repels the rotation of the battery mounting section 52, generating a repulsive force (pressing force F) in the direction opposite to the direction in which the battery mounting section 52 attempts to rotate relative to the guide rail section 70 (the direction of arrow R).

In this way, the main elastic body 83 elastically deforms when the battery mounting section 52 moves to one side in the Y-axis direction relative to the housing 21, and in addition to absorbing the impact when the striking section 34 strikes, it also has the function of preventing the battery mounting section 52 from rotating relative to the guide rail section 70. This prevents damage to the guide rail section 70 or premature wear (improved durability).

The first sub-elastic body 81, which is elastically deformed together with the main elastic body 83, is compressed, like the main elastic body 83, until its diameter dimension D along the Y-axis direction becomes a smaller diameter dimension d1 (d1<D). Meanwhile, because the first sub-elastic body 81 is held in the X-axis direction by the first sub-elastic body holding portion 27e, no repulsive force along the X-axis direction acts on the battery mounting portion 52. In other words, the first sub-elastic body 81 generates a repulsive force only in the Y-axis direction on the battery mounting portion 52.

In addition, the rail elastic body 84 generates a repulsive force in the X-axis direction between the housing-side rail 27a and the battery mounting section-side second rail 52f. This repulsive force also prevents the battery mounting section 52 from rotating relative to the guide rail section 70.

<Regarding the second moving state>
After the main elastic body 83 and the first sub-elastic body 81 are elastically deformed, the battery attachment section 52 (battery unit 50) moves to the other side in the Y-axis direction relative to the housing 21 via the guide rail section 70. Specifically, the repulsive forces of the main elastic body 83 and the first sub-elastic body 81 cause the battery attachment section 52 to move in the direction of the dashed arrow M2 in Figure 10 relative to the housing 21.

At this time, in the first movement state described above (see Figure 9), the main elastic body 83 expands in the X-axis direction, and rotation of the battery unit 50 relative to the guide rail portion 70 has just been restricted, so the battery mounting portion 52 moves smoothly and straight along the guide rail portion 70.

Then, as shown in FIG. 10, the second sub-elastic body 82 is pressed against the second abutment wall 52h of the battery mounting section 52 and compressed (elastically deformed) toward the other side in the Y-axis direction. Specifically, the second sub-elastic body 82 is compressed in the Y-axis direction by the second abutment wall 52h and the second sub-elastic body holding section 27f, and its diameter dimension D becomes a smaller diameter dimension d3 (d3<D).

As a result, the second sub-elastic body 82 absorbs the impact caused by movement of the battery mounting section 52 to the other side in the Y-axis direction. This also reduces the load on the operator and stabilizes the electrical connection between the battery side terminal 51b and the mounting section side terminal 52b (see Figure 3).

As described above in detail, with the driving tool 10 according to embodiment 1, the first sub-elastic body 81, the second sub-elastic body 82, and the main elastic body 83 elastically deform when the battery mounting section 52 moves relative to the housing 21, preventing the battery mounting section 52 from rotating relative to the guide rail section 70.

In addition, the structure of the first sub-elastic body 81, the second sub-elastic body 82, and the main elastic body 83 can be simplified. Furthermore, the guide rail portion 70 is prevented from being gouged when the battery mounting portion 52 moves, improving durability.

Furthermore, with the driving tool 10 according to embodiment 1, the main elastic body 83 and the first sub-elastic body 81 are arranged on one side of the battery mounting section 52 in the movement direction (one side in the Y-axis direction), and the second sub-elastic body 82 is arranged on the other side of the battery mounting section 52 in the movement direction (the other side in the Y-axis direction).

This makes it possible to further improve the vibration absorption effect on both sides of the Y-axis direction (both sides in the driving direction) of the battery attachment section 52 (battery unit 50). This further reduces the burden on the operator and further stabilizes the electrical connection between the battery side terminal 51b and the attachment section side terminal 52b.

Furthermore, with the driving tool 10 according to embodiment 1, when the drive mechanism 30 is stopped, the battery attachment section 52 contacts both the main elastic body 83 and the first sub-elastic body 81 (first elastic body) and the second sub-elastic body 82 (second elastic body).

This effectively prevents the battery mounting section 52 from rattling on both sides in the Y-axis direction along the guide rail section 70. Therefore, for example, when an operator holds the driving tool 10, the operator is prevented from feeling uncomfortable due to rattling of the battery unit 50. Note that since the main elastic body 83 and the first sub-elastic body 81 (first elastic body) are both located on one side in the Y-axis direction relative to the battery mounting section 52, either one of them may be configured to move away from the battery mounting section 52 when the drive mechanism 30 is stopped.

Furthermore, with the driving tool 10 according to embodiment 1, the guide rail portion 70 restricts the movement of the battery mounting portion 52 in any direction other than the movement direction of the striking portion 34 (the Y-axis direction).

This means that it is sufficient to position the main elastic body 83 only in the direction of movement of the striking part 34 (the direction in which impact is generated). This allows for a simpler shape for the elastic body than before, and makes it possible to further simplify the fixing structure, etc.

Furthermore, with the driving tool 10 according to embodiment 1, the rail set consisting of the battery mounting section side second rail 52f and the housing side rail 27a is arranged opposite each other in a direction (Z-axis direction) that intersects with the movement direction (Y-axis direction) of the striking section 34.

This allows the battery attachment section 52 to move freely relative to the housing 21 in the direction of movement of the striking section 34, while ensuring that it cannot fall off.

<Embodiments 2, 3, and 4>
Next, second, third and fourth embodiments of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

Figure 11 is a diagram corresponding to Figure 5 and shows a driving machine according to embodiment 2, Figure 12 is a diagram corresponding to Figure 5 and shows a driving machine according to embodiment 3, and Figure 13 is a diagram corresponding to Figure 5 and shows a driving machine according to embodiment 4.

As shown in Figure 11, the driving tool 90 of embodiment 2 differs from the driving tool 10 of embodiment 1 (see Figure 5) in that one additional main elastic body 83 is provided on one side of the movement direction of the battery mounting section 52 (one side in the Y-axis direction), and one less second sub-elastic body 82 is provided on the other side of the movement direction of the battery mounting section 52 (the other side in the Y-axis direction). Furthermore, the pair of main elastic bodies 83 are arranged on both sides of the battery mounting section 52 in the Z-axis direction, and the pair of main elastic bodies 83 are spaced apart from each other in the Z-axis direction.

Embodiment 2, configured as described above, can also achieve the same effects as embodiment 1 described above. In addition, in the driving tool 90 of embodiment 2, the number of main elastic bodies 83 and first sub-elastic bodies 81, which are the first elastic bodies (three in total), is greater than the number of second sub-elastic bodies, which are the second elastic bodies (one in total).

As a result, the largest impact when striking the striking section 34 (see Figure 2) can be effectively absorbed by a total of three main elastic bodies 83 and the first sub-elastic body 81. At the same time, because there are two main elastic bodies 83, it is also possible to further prevent the battery mounting section 52 from rotating relative to the guide rail section 70.

As shown in Figure 12, the driving tool 100 of embodiment 3 differs from the driving tool 10 of embodiment 1 in that it has one less second sub-elastic body 82 on the other side of the movement direction of the battery attachment section 52 (the other side in the Y-axis direction). Note that, as with embodiment 2, in embodiment 3, the number of main elastic bodies 83 and first sub-elastic bodies 81, which are first elastic bodies (two in total), is greater than the number of second sub-elastic bodies 82, which are second elastic bodies (one in total).

Embodiment 3, configured as described above, can also achieve the same effects as embodiment 1 described above. Furthermore, since the second sub-elastic body 82 simply receives the momentum of the battery mounting section 52 moving toward the other side of the movement direction (the other side in the Y-axis direction) due to the repulsive forces of the main elastic body 83 and the first sub-elastic body 81, even a single body can provide a sufficient vibration absorption effect.

As shown in FIG. 13, the driving tool 110 of embodiment 4 differs from the driving tool 10 of embodiment 1 in that the first sub-elastic body 81 on one side of the movement direction of the battery mounting section 52 (one side in the Y-axis direction) is omitted, one main elastic body 83 is added, and one second sub-elastic body 82 is removed from the other side of the movement direction of the battery mounting section 52 (the other side in the Y-axis direction). The pair of main elastic bodies 83 are also positioned so that they come into contact with each other in the Z-axis direction of the battery mounting section 52. Similar to embodiment 2, in embodiment 4, the number of main elastic bodies 83 (total of two) which are first elastic bodies is greater than the number of second sub-elastic bodies 82 (total of one) which are second elastic bodies.

Embodiment 4, configured as described above, can also achieve the same effects as embodiment 1 described above. In addition, because the driving tool 110 of embodiment 4 has two main elastic bodies 83, it is possible to further prevent the battery mounting section 52 from rotating relative to the guide rail section 70.

The materials, number, and placement locations of the main elastic body 83, first sub-elastic body 81, and second sub-elastic body 82 are not limited to the examples given in the above-mentioned embodiments 1, 2, 3, and 4, and can be changed as appropriate depending on the specifications of the driving tool 10 (such as the mass of the striking section 34 and the pressure in the pressure chamber 33a).

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

Figure 14 shows a diagram corresponding to Figure 3, illustrating a driving machine according to embodiment 5.

As shown in Figure 14, the driving tool 120 of embodiment 5 has a different shape for the upper portion 52e of the battery mounting section 52 compared to the driving tool 10 of embodiment 1 (see Figure 5). Furthermore, due to the change in the shape of the upper portion 52e, the shape of the second sub-elastic body holding section 27f is also different.

Specifically, an elastic body pressing protrusion 121 is integrally formed on the upper step 52e so as to protrude from the second abutment wall 52h toward the other side in the movement direction of the battery attachment section 52 (the other side in the Y-axis direction). Correspondingly, the width dimension along the X-axis direction of the second sub-elastic body holding section 27f is larger than in embodiment 1. As a result, the tip side (the other side in the Y-axis direction) of the elastic body pressing protrusion 121 fits into the other side in the X-axis direction (the upper side in the figure) of the second sub-elastic body 82 held by the second sub-elastic body holding section 27f.

As shown in FIG. 14, the second sub-elastic body 82 is disposed between the elastic body pressing protrusion 121 and the second sub-elastic body holding portion 27f in the X-axis direction. As a result, when the battery mounting portion 52 moves to the other side in the movement direction (the other side in the Y-axis direction) and the second sub-elastic body 82 is pressed by the second abutment wall 52h, the second sub-elastic body 82 presses the elastic body pressing protrusion 121 with a pressing force F.

In other words, the second sub-elastic body 82 expands in a direction that repels the rotation of the battery mounting section 52, generating a repulsive force (pressure force F) in the direction opposite to the direction in which the battery mounting section 52 attempts to rotate relative to the guide rail section 70 (the direction of arrow R).

Embodiment 5, configured as described above, can also achieve the same effects as embodiment 1 described above. In addition, in the driving tool 120 of embodiment 5, the second sub-elastic body 82 also generates a repulsive force in the direction opposite to the direction in which the battery mounting section 52 attempts to rotate relative to the guide rail section 70, making it possible to more reliably protect the guide rail section 70 (improved durability).

Sixth and Seventh Embodiments
Next, sixth and seventh embodiments of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those in the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

Figure 15 shows a diagram corresponding to Figure 3, illustrating a driving machine according to embodiment 6 (solid lines) and embodiment 7 (dashed lines).

As shown by the solid lines in Figure 15, the location of the first sub-elastic body 81 in the driving tool 130 of embodiment 6 is different from the driving tool 10 of embodiment 1 (see Figure 5). Furthermore, due to the change in the location of the first sub-elastic body 81, the shape of the first sub-elastic body holding portion 27e is also different.

Specifically, the first sub-elastic body 81 is parallel to the Y-axis direction and is positioned on a reference line BL drawn through the center of gravity G. As a result, when the battery mounting section 52 moves to one side in the movement direction (one side in the Y-axis direction) and the first sub-elastic body 81 is pressed by the pressing wall 131 of the battery pack 51, the first sub-elastic body 81 generates a pressing force F in the extension direction of the reference line BL. Note that the first sub-elastic body holding section 27e extends beyond the reference line BL to one side in the X-axis direction (the lower side in the figure).

Embodiment 6, configured as described above, can also achieve the same effects as embodiment 1 described above. In addition, in the driving tool 130 of embodiment 6, the first sub-elastic body 81 is positioned on the reference line BL that is parallel to the Y-axis direction and passes through the center of gravity G, which prevents the battery mounting section 52 from rotating relative to the guide rail section 70. This more effectively prevents a load that would gouge the guide rail section 70 from being applied.

However, as in the driving tool 140 of embodiment 7 shown by the dashed line in Figure 15, it is desirable to position the first sub-elastic body 81 as far as possible on the opposite side of the reference line BL from the housing 21 (on one side in the X-axis direction). In other words, the first sub-elastic body 81 is positioned on the opposite side of the guide rail portion 70 from the center of gravity G of the battery pack 51 including the battery attachment portion 52.

This allows the direction in which the pressing force F of the first sub-elastic body 81 acts to be directed toward the other side in the X-axis direction (toward the housing 21). This further reliably prevents the battery mounting section 52 from rotating relative to the guide rail section 70.

The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications are possible without departing from the spirit of the invention. For example, the working machine of the present invention can be applied to not only driving machines (nailers) 10, 90, 100, 110, 120, 130, and 140 that drive nails 11, but also to machines that have an impact unit (moving unit) that performs linear motion, such as an electric tacker.

In addition, the materials, shapes, dimensions, numbers, installation locations, etc. of each component in each of the above-described embodiments are arbitrary as long as they achieve the present invention and are not limited to the above-described embodiments.

10... driving tool (working machine), 11... nail (fastener), 20... driving tool main body, 21... housing, 22, 23... housing segments, 24... main body housing section, 25... handle section, 26... motor housing section, 27... battery unit mounting section, 27a... housing side rail, 27b... second elastic body support section, 27c... fifth abutment wall, 27d... sixth abutment wall, 27e... first sub-elastic body holding section, 27f... second sub-elastic body holding section, 28... opening, 30... drive mechanism (operating section), 31 ...nose, 31a...nose mounting cylindrical portion, 31b...injection portion, 31c...bumper, 32...cylinder, 33...pressure accumulator vessel (pressure portion), 33a...pressure chamber, 34...impact portion (moving portion), 34a...piston, 34b...driver blade, 34c...projection, 34d...sealing member, 35...pinwheel (lifting portion), 40...brushless motor (motor), 41...stator, 42...rotor, 42a...rotating shaft, 43...controller, 44...trigger switch, 45...planetary gear reducer , 50... battery unit, 51... battery pack, 51a... battery pack side rail, 51b... battery side terminal, 51c... release button, 52... battery mounting section, 52a... battery mounting section side first rail, 52b... mounting section side terminal, 52c... lower section, 52d... middle section, 52e... upper section, 52f... battery mounting section side second rail (battery mounting section side rail), 52g... first abutment wall, 52h... second abutment wall, 52k... first elastic body support section, 52m... third abutment wall, 52n... fourth abutment Contact wall, 60...magazine, 62...magazine case, 63...feeder, 70...guide rail portion (guide portion), 81...first sub-elastic body (elastic body, first elastic body), 82...second sub-elastic body (elastic body, second elastic body), 83...main elastic body (elastic body, first elastic body), 84...rail portion elastic body, 90, 100, 110, 120, 130, 140...driver, 121...elastic body pressing protrusion, 131...pressing wall, BL...reference line segment, F...pressing force (repulsion force), G...center of gravity, W...workpiece

Claims (14)

A motor;
an operating unit having a moving unit that moves by receiving the driving force of the motor;
a housing that supports the motor and the operating unit;
a battery pack that supplies power to the motor;
a battery mounting section that is provided to be movable relative to the housing in the direction of movement of the moving section and to which the battery pack is detachably attached ;
a guide portion that guides movement of the battery mounting portion;
an elastic body provided between the housing and the battery mounting portion;
Equipped with
the elastic body is compressed and elastically deformed in the direction of movement of the battery mounting part when the battery mounting part moves relative to the housing, and expands in a direction repelling the rotation of the battery mounting part, thereby suppressing the rotation of the battery mounting part relative to the guide part.
Work equipment. the elastic body generates a repulsive force in a direction opposite to a direction in which the battery mounting portion tends to rotate relative to the guide portion.
The work machine according to claim 1 . the guide portion includes a battery mounting portion-side rail that is provided in the battery mounting portion and is disposed between the housing and the battery pack,
The elastic body is
a first elastic body disposed on one side of the battery mounting portion side rail in the moving direction of the battery mounting portion;
a second elastic body disposed on the other side of the battery mounting portion rail in the moving direction of the battery mounting portion;
Including,
The work machine according to claim 2 . the battery mounting portion is in contact with both the first elastic body and the second elastic body when the operation portion is in a stopped state;
The work machine according to claim 3 . A motor;
an operating unit having a moving unit that moves by receiving the driving force of the motor;
a housing that supports the motor and the operating unit;
a battery pack that supplies power to the motor;
a battery mounting section that is provided to be movable relative to the housing in the direction of movement of the moving section and to which the battery pack is detachably attached;
a guide portion that guides movement of the battery mounting portion;
an elastic body provided between the housing and the battery mounting portion;
Equipped with
the elastic body elastically deforms when the battery mounting section moves relative to the housing, and generates a repulsive force in a direction opposite to a direction in which the battery mounting section attempts to rotate relative to the guide section, thereby suppressing the rotation of the battery mounting section relative to the guide section;
the battery pack is disposed on one side of the housing in a direction perpendicular to a direction in which the battery attachment section moves,
the guide portion includes a battery mounting portion-side rail that is provided in the battery mounting portion and is disposed between the housing and the battery pack,
The elastic body is
a first elastic body disposed on one side of the battery mounting portion side rail in the moving direction of the battery mounting portion;
a second elastic body disposed on the other side of the battery mounting portion rail in the moving direction of the battery mounting portion;
Including,
the first elastic body is disposed on one side of the battery mounting portion side rail in the orthogonal direction ,
the second elastic body is disposed on the other side of the battery mounting portion side rail in the orthogonal direction ;
Work equipment. the first elastic body and the second elastic body are formed in the same shape,
the number of the first elastic bodies is greater than the number of the second elastic bodies;
The work machine according to any one of claims 3 to 5 . A motor;
an operating unit having a moving unit that moves by receiving the driving force of the motor;
a housing that supports the motor and the operating unit;
a battery pack that supplies power to the motor;
a battery mounting section that is provided to be movable relative to the housing in the direction of movement of the moving section and to which the battery pack is detachably attached;
a guide portion that guides movement of the battery mounting portion;
an elastic body provided between the housing and the battery mounting portion;
Equipped with
the elastic body elastically deforms when the battery mounting section moves relative to the housing, and generates a repulsive force in a direction opposite to a direction in which the battery mounting section attempts to rotate relative to the guide section, thereby suppressing the rotation of the battery mounting section relative to the guide section;
the guide portion includes a battery mounting portion-side rail that is provided in the battery mounting portion and is disposed between the housing and the battery pack,
The elastic body is
a first elastic body disposed on one side of the battery mounting portion side rail in the moving direction of the battery mounting portion;
a second elastic body disposed on the other side of the battery mounting portion rail in the moving direction of the battery mounting portion;
Including,
the battery pack is disposed on one side of the housing in a direction perpendicular to a direction in which the battery attachment section moves,
the first elastic body is disposed at a position in the orthogonal direction that overlaps with a center of gravity of the battery pack including the battery mounting portion, or on an opposite side of the center of gravity from the guide portion .
Work equipment. the first elastic body is disposed on an opposite side of the center of gravity from the guide portion in the orthogonal direction;
The work machine according to claim 7. the guide portion restricts the battery mounting portion from moving in a direction other than the moving direction of the moving portion.
The work machine according to claim 5 . The guide portion includes a housing-side rail provided on the housing.
The work machine according to claim 9. a rail set including the battery mounting portion side rail and the housing side rail is disposed opposite to each other in a direction intersecting with the moving direction of the moving portion;
The work machine according to claim 10. the moving part is a striking part that strikes the fastener,
The operating unit
a pressing portion that generates a pressing force on the striking portion in one direction of the movement of the moving portion , causing the striking portion to strike the stopper;
a lifting portion that lifts the striking portion toward the other side in the movement direction of the moving portion against the pressing force of the pressing portion,
A work machine according to any one of claims 1 to 11. A motor;
an operating unit having a moving unit that moves by receiving the driving force of the motor;
a housing that supports the motor and the operating unit;
a battery pack that supplies power to the motor;
a battery mounting section that is provided to be movable relative to the housing in the direction of movement of the moving section and to which the battery pack is detachably attached;
a guide portion that guides movement of the battery mounting portion;
an elastic body provided between the housing and the battery mounting portion;
Equipped with
the elastic body elastically deforms when the battery mounting section moves relative to the housing, and generates a repulsive force in a direction opposite to a direction in which the battery mounting section attempts to rotate relative to the guide section, thereby suppressing the rotation of the battery mounting section relative to the guide section;
the moving part is a striking part that strikes the fastener,
The operating unit
a pressing portion that generates a pressing force on the striking portion in one direction of the movement of the moving portion, causing the striking portion to strike the stopper;
a lifting portion that lifts the striking portion toward the other side in the movement direction of the moving portion against the pressing force of the pressing portion;
Equipped with
the battery pack is disposed on one side of the housing in a direction perpendicular to a direction of movement of the moving part,
the guide portion includes a battery mounting portion-side rail that is provided in the battery mounting portion and is disposed between the housing and the battery pack,
The elastic body is
a first elastic body disposed on one side of the rail on the battery mounting portion in the direction of movement of the moving portion;
a second elastic body disposed on the other side of the rail in the direction of movement of the moving part with respect to the battery mounting part side rail;
Including,
the first elastic body is disposed on one side of the battery mounting portion side rail in the orthogonal direction;
Work equipment. the elastic body further includes a third elastic body that is disposed on one side of the battery mounting portion side rail in the movement direction of the moving portion,
the third elastic body is positioned in the orthogonal direction so as to overlap the battery mounting portion side rail;
The work machine according to claim 13.