JP6661328B2 - Electric tool - Google Patents

Description

  The present invention relates to a power tool. For example, the present invention relates to a multifunctional electric tool capable of performing various operations such as cutting, peeling, and grinding by exchanging a tip blade.

  This multi-function electric tool, which is called a multi-tool, converts the rotational output of the electric motor as a drive source into a reciprocating swing motion of the output shaft and outputs it. Various tip blades are attached. The tip blade is given a high-speed oscillating motion at a small angle around the output shaft, and various operations such as cutting of masonry boards, peeling of P tiles, and grinding of wood are performed. As a result of applying the minute high-speed oscillating motion to the output shaft in this way, it is necessary to take appropriate vibration countermeasures for each part of the power tool. For example, Patent Literature 1 below describes a technique relating to measures against vibration.

Japanese Patent No. 4739910

  It is necessary to further develop measures against the above-mentioned conventional vibration. The present invention has been made in view of such a conventional problem, and an object thereof is to make it possible to more reliably prevent vibration of an attached battery pack.

  The above-mentioned problems are solved by the following inventions. A first aspect of the present invention is an electric tool including an electric motor as a drive source and having a battery mounting portion for mounting a slide-mount battery pack as a power source. According to a first aspect of the present invention, the battery mounting portion includes a slide rail portion to be engaged in an engagement direction orthogonal to a slide direction with respect to a rail receiving portion of the battery pack having a U-shaped cross section. A configuration is provided in which pressing portions for elastically pressing the rail receiving portions of the battery pack are provided on both surfaces in the engagement direction.

  According to the first aspect, in a state where the battery pack is mounted on the battery mounting portion, the pressing portions provided on both surfaces of the slide rail portion on the battery mounting portion side in the engagement direction are respectively provided on the rail receiving portions on the battery pack side. It is elastically pressed. The pressing portion is elastically sandwiched and pressed between both surfaces of the slide rail portion in the engaging direction and the rail receiving portion, so that vibrations mainly in the engaging direction with respect to the battery mounting portion of the battery pack are absorbed. The first invention is directed to a case where a slide rail portion is provided on a battery mounting portion side of an electric tool, and a rail receiving portion having a U-shaped cross section is provided on a battery pack side.

  In the first invention, the pressing portion is pressed on both surfaces in the engagement direction of the slide rail portion. Both sides in the engagement direction of the slide rail portion are the upper surface and the lower surface when the sliding surface (mounting / removing direction) of the battery pack is the horizontal direction, and thus are the gravitational direction and the antigravity direction. When the pressing portions are pressed on both sides of the slide rail portion in the engaging direction, the battery pack is elastically supported (floating supported) with respect to the battery mounting portion. Vibration is absorbed. Furthermore, not only the engagement direction (front-back direction) but also the left-right and up-down vibrations can be absorbed.

  A second invention is the power tool according to the first invention, wherein the pressing portions on both surfaces in the engagement direction are mutually connected to form an integral part.

  According to the second aspect, the pressing portions on both sides in the engaging direction can be hardly disengaged from the slide rail portion, and the pressing portions on both sides in the engaging direction can be handled as one part. Can be enhanced.

  A third aspect of the present invention is an electric tool including an electric motor as a drive source and having a battery mounting portion for mounting a slide-mount battery pack as a power source. According to a second aspect of the present invention, the battery mounting portion includes a rail receiving portion having a U-shaped cross section for engaging a slide rail provided in the battery pack in an engaging direction orthogonal to the sliding direction. A configuration is provided in which pressing portions are provided for elastically pressing both sides of the slide rail portion of the pack in the engagement direction.

  According to the third aspect, in a state where the battery pack is mounted on the battery mounting portion, the pressing portions provided on the rail receiving portion on the battery mounting portion are elastically provided on both sides in the engagement direction of the slide rail on the battery pack side. Pressed. The pressing portions are elastically sandwiched and pressed between both sides of the engagement direction of the slide rail portion of the battery pack and the rail receiving portion, so that vibrations mainly in the engagement direction with respect to the battery mounting portion of the battery pack are reduced. Absorbed. Furthermore, not only the engagement direction (front-back direction) but also the left-right and up-down vibrations can be absorbed. The third invention is a case where a rail receiving portion having a U-shaped cross section is provided on the battery mounting portion side of the power tool and a slide rail portion is provided on the battery pack side, which is the reverse of the first invention. The case is targeted.

  A fourth invention is the electric tool according to any one of the first to third inventions, wherein pressing portions are arranged at a plurality of positions in a sliding direction (attachment and removal directions) of the battery pack with respect to the battery attachment portion.

  According to the fourth aspect, the vibration in the engagement direction (the direction orthogonal to the sliding direction) of the battery pack with respect to the battery mounting portion is more reliably absorbed. Furthermore, not only the engagement direction (front-back direction) but also the left-right and up-down vibrations can be absorbed.

  A fifth invention is an electric tool according to the fourth invention, wherein the pressing portions at a plurality of positions in the sliding direction are mutually connected to form an integral part.

  According to the fifth aspect, it is possible to make it difficult for the pressing portions at a plurality of locations in the sliding direction to come off, and to handle the pressing portions at a plurality of locations in the sliding direction as one component, thereby improving the handling and assembling properties. Can be.

  A sixth invention is an electric tool in which a battery pack is attached as a power source to a main body equipped with an electric motor as a drive source. According to the sixth aspect, a configuration is provided in which one of the battery mounting portion and the battery pack is provided with an engaging portion, and the other is provided with an engaging receiving portion for engaging the engaging portion. In the sixth invention, a configuration is provided in which a pressing portion that is elastically sandwiched and pressed between the engagement portion and the engagement receiving portion is interposed.

  According to the sixth aspect, the battery pack is elastically supported (floating supported) via the pressing portion with respect to the battery mounting portion on the main body side. Vibration is absorbed in the direction. The sixth invention is applied to battery packs of various mounting types such as a slide-mounting box-type battery pack and a plug-in mounting type cluster-type battery pack. Further, the pressing portion may be provided on one or both of the battery mounting portion side and the battery pack side, and may be provided on one or both of the engaging portion and the engaging receiving portion.

  According to a seventh aspect, in the sixth aspect, a slide rail portion as an engagement portion is provided on one of the battery mounting portion or the battery pack of the main body, and the slide rail portion is provided in the other as an engagement receiving portion in the sliding direction. The power tool includes a rail receiving portion having a U-shaped cross section that engages in an orthogonal engaging direction, and a pressing portion is interposed between both surfaces of the slide rail portion in the engaging direction and the rail receiving portion.

  According to the seventh aspect of the invention, when the power tool including the electric machine including the electric motor as a drive source and the battery pack attached to the battery mounting part of the electric machine is grasped as one of the battery mounting part or the battery pack, A slide rail portion is provided on the other side, and a rail receiving portion is provided on the other side. The slide rail portion is inserted (slid) into the rail receiving portion, and the battery pack is mounted on the battery mounting portion. According to the seventh aspect, the pressing portions are provided on both surfaces in the engagement direction of one or both of the slide rail portion and the rail receiving portion. For this reason, when the battery pack is mounted, the pressing portion is elastically sandwiched and pressed between both surfaces of the slide rail portion in the engagement direction and the rail receiving portion, so that the battery pack is mainly attached to the battery mounting portion. Vibration in the engaging direction (the direction orthogonal to the sliding direction) is absorbed.

  According to the seventh aspect of the present invention, the slide rail portion is provided in each of the two configurations, that is, the configuration in which the slide rail portion is provided on the battery mounting portion side of the main body and the configuration in which the slide rail portion is provided on the battery pack side. Both the configuration in which the pressing portion is provided on the side and the configuration in which the pressing portion is provided on the rail receiving portion side are included.

  In an eighth aspect based on any one of the first to seventh aspects, the pressing portion has its own elasticity in a mounting recess provided in the slide rail portion as the engaging portion or the rail receiving portion as the engaging receiving portion. The power tool is fitted and held by using force.

  According to the eighth aspect, while the pressing portion can be easily mounted in the mounting recess, it can be mounted so as not to be easily removed by vibration or the like.

  A ninth invention is a power tool according to any one of the first to eighth inventions, wherein the pressing surface of the pressing portion has an arc shape.

  According to the ninth aspect, it is possible to reduce the movement resistance at the time of attaching and detaching the battery pack, thereby improving the operability of attaching and detaching the battery pack.

  A tenth invention is a slide-attached battery pack attached to a battery attachment portion of a power tool. The battery pack according to a tenth aspect of the present invention has a slide guide portion that is engaged with the battery mounting portion in an engagement direction orthogonal to the slide direction. In the tenth aspect, a pressing portion for elastically pressing the battery mounting portion is provided on both surfaces of the sliding guide portion in the engagement direction.

  According to the tenth aspect, the vibration of the battery pack in the engagement direction when the battery pack is attached to the power tool is absorbed. The slide guide section may be a slide rail section or a rail receiving section that receives the slide rail section.

  An eleventh invention is an electric tool in which a battery pack is attached as a power source to a main body equipped with an electric motor as a drive source. In the eleventh invention, a convex portion is provided on one of the battery mounting portion or the battery pack for mounting the battery pack, and the other of the battery mounting portion or the battery pack can elastically hold the convex portion from one side and the other side. It is configured.

  According to the eleventh aspect, the battery mounting portion on the main unit side and the protrusion provided on one of the battery packs are elastically held by the other, so that vibration of the battery pack is suppressed.

1 is an overall perspective view of a power tool according to an embodiment of the present invention. This figure shows a state viewed from diagonally backward. This figure shows a state where a battery pack is attached. 1 is an overall perspective view of a power tool according to an embodiment. This figure shows a state viewed from diagonally backward. This drawing shows a state where the battery pack is removed. It is a figure showing the internal structure of the electric power tool concerning this embodiment. This figure shows a state viewed from the left side. In this drawing, the battery pack is shown in a detached state. FIG. 4 is a vertical cross-sectional view of a battery mounting portion to which a battery pack is mounted. It is a perspective view of a vibration absorption part. FIG. 10 is a perspective view of a single battery pack according to another embodiment. It is the schematic which shows the form which provided the vibration absorption part in the slide rail of the battery attachment part. It is the schematic which shows the form which provided the vibration absorption part in the rail receiving part of the battery pack. It is the schematic which shows the form which provided the vibration absorption part in the slide rail part of the battery pack. It is the schematic which shows the form which provided the vibration absorption part in the rail receiving part of the battery attachment part. FIG. 4 is a schematic longitudinal sectional view showing an embodiment in which a vibration absorbing portion is provided for a cluster-type battery pack of the plug-in type. FIG. 4 is a schematic cross-sectional view showing an embodiment in which a vibration absorbing section is provided for a cluster-type battery pack of a plug-in type. FIG. 11 is a schematic longitudinal sectional view showing another embodiment in which a vibration absorbing portion is provided for a cluster-type battery pack of a plug-in type.

  Next, an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, the power tool 1 of the present embodiment is a hand-held power tool called a so-called multi-tool, and cuts a mason board and peels a P tile by exchanging a tip blade. It is a multifunctional power tool that can perform various operations such as grinding wood.

  The electric tool 1 includes a tool main body (this machine) 10 in which an electric motor 3 as a driving source is provided in the middle of a cylindrical main body housing 2 in the longitudinal direction. The rotation output of the electric motor 3 is converted into a reciprocating swinging motion about the axis with respect to the spindle 4 and output. The drive shaft 5 is connected to the output shaft 3 a of the electric motor 3. The drive shaft 5 is rotatably supported coaxially with the output shaft 3a via bearings 6 and 7. An eccentric shaft portion 5a slightly eccentric with respect to the rotation axis is provided at a front portion of the drive shaft 5. An eccentric roller 14 is attached to the eccentric shaft 5a.

  A spindle 4 is rotatably supported at the front of the main body housing 2 via bearings 8 and 9. The spindle 4 is rotatably supported around an axis perpendicular to the motor axis of the electric motor 3 (the axis of the output shaft 3a). The lower side of the spindle 4 protrudes downward from the lower surface of the front part of the main body housing 2. A tip blade T is attached to the protruding portion. The tip blade T is attached to a lower portion of the spindle 4 while being sandwiched between the inner flange 11 and the outer flange 12. If the outer flange 12 is removed, the tip tool T can be replaced with another one.

  A bifurcated operating arm 13 is attached to the upper part of the spindle 4. The operating arm 13 is fixed to the spindle 4 so as not to rotate relatively around the axis and to be displaceable in the axial direction. The operating arm 13 includes two arm portions 13a extending rearward in parallel at a fixed interval from each other. The eccentric roller 14 of the eccentric shaft 5a is interposed between the two arms 13a. Both arms 13a are in contact with the left and right sides thereof in a state where the rotation and displacement of the eccentric roller 14 are allowed.

  A slide operation type start switch 16 is provided on the upper surface of the main body housing 2. A main switch 15 is disposed at a rear portion of the main body housing 2. The start switch 16 is provided with an arm portion 16a that extends rearward in the main body housing 2. The rear part of the arm part 16a is linked to the main switch 15. When the start switch 16 is slid forward, the main switch 15 is turned on and the electric motor 3 is started. When the electric motor 3 starts and the drive shaft 5 rotates, the eccentric roller 14 revolves around the rotation axis of the drive shaft 5. Of the revolving operation of the eccentric roller 14, the operation in the left-right direction is transmitted to the arm 13a, and the operating arm 13 swings around the axis of the spindle 4. When the operating arm 13 swings, the spindle 4 swings at a fixed angle around its axis, and the tip blade T is given a high-speed swinging motion. When the start switch 16 is slid backward, the main switch 15 is turned off and the electric motor 3 stops.

  The rear side of the main body housing 2 is formed to have a thickness that is easy for the user to grip, and serves as a grip portion 2a to be gripped by the user. A speed change dial 17 is provided on the rear upper surface of the grip portion 2a. By rotating the speed change dial 17, the output rotation speed of the electric motor 3 can be adjusted. By adjusting the output rotation speed of the electric motor 3, the swing speed of the tip blade T can be appropriately adjusted according to the work content.

  A battery mounting portion 20 is integrally provided behind the grip portion 2a. The battery mounting part 20 is provided in a state of projecting downward mainly from the rear part of the grip part 2a. The battery pack 30 is attached to the battery attachment section 20.

  A pair of left and right slide rail portions 21 is provided on the rear surface of the battery mounting portion 20. The left and right slide rail portions 21 are provided so as to project in directions approaching each other. Positive and negative connection terminals 22 are provided between the left and right slide rail portions 21. The positive and negative connection terminals 22 are connected to the terminal receiving portions of the battery pack 30, and the battery pack 30 is electrically connected to the tool body 10.

  The battery pack 30 attached to the battery attachment section 20 is a lithium ion battery having an output voltage of 10.8 V, and has a configuration in which a plurality of battery cells are provided inside a case. The battery pack 30 is a secondary battery that can be repeatedly used by being charged by a separately prepared charger, and is a highly versatile battery that can also be used as a power source for other power tools such as a screwing machine and a cutting tool. I have.

  The battery pack 30 includes a pair of left and right rail receiving portions 31. The rail receiving portion 31 has a U-shaped cross section into which the slide rail portion 21 on the tool body 10 side can be inserted. The battery pack 30 is mounted by sliding the battery pack 30 relative to the battery mounting section 20 in the battery mounting direction, and causing the slide rail section 21 to relatively enter the left and right rail receiving sections 31. 4, the slide rail portion 21 is inserted between the front engagement portion 31a and the rear engagement portion 31b of the rail receiving portion 31. As a result, the battery pack 30 is engaged so as not to be displaced in a direction substantially perpendicular to the mounting direction (an engagement direction, a front-back direction in FIG. 4).

  Although not shown in the drawing (see, for example, FIG. 6), the battery pack 30 is provided with a lock claw 32b formed by a convex portion, and the lock claw 32b is provided on the battery mounting portion 20 side. The battery pack 30 is locked so as not to be displaceable in the removal direction by engaging with the lock claw receiving portion 26 formed by the recessed portion. By operating the unlock button 32c, the mounting lock state by the lock claw can be released, and in this unlocked state, the battery pack 30 can be removed by sliding in the removal direction (upward in FIG. 4). As shown in FIG. 2, cylindrical fitting recesses 25 are provided on both left and right sides of the lock claw receiving portion 26. Although not shown in FIG. 2, a cylindrical elastic rubber is fitted into the fitting concave portion 25, and the battery pack 30 attached with the elastic rubber is pressed to vibrate or shake the battery pack 30. Sticking can be prevented.

  The left and right slide rail portions 21 are provided with a vibration absorbing portion 23 for absorbing the vibration of the attached battery pack 30. The left and right vibration absorbers 23 are provided symmetrically to each other. In the present embodiment, the vibration absorbing member 24 is embedded in the left and right slide rail portions 21 to form the vibration absorbing portion 23. The details of the vibration absorbing section 23 are shown in FIG. 4, and the details of the vibration absorbing member 24 are shown in FIG. The vibration absorbing member 24 is an elastic member made of rubber, and includes an absorbing portion 24a on the front side (lower side in FIG. 4) of the battery pack 30 in the sliding direction, an absorbing portion 24b on the rear side (upper side in FIG. 4) in the sliding direction, and both absorbing portions. There is provided a connecting portion 24e for connecting 24a and 24b. The absorbing portion 24a on the front side in the sliding direction and the absorbing portion 24b on the rear side in the sliding direction each have a cross shape, and are perpendicular to the sliding direction (attachment / removal direction) of the battery pack 30 (front and rear in FIG. 4). Direction). The distal end surfaces of the pressing portions 24c and 24d are formed in an arc shape in the sliding direction of the battery pack 30.

  The left and right vibration absorbing members 24 are elastically fitted and held in mounting recesses 21a provided on the opposing surfaces of the slide rail portion 21, respectively. As shown in FIGS. 2 and 3, the mounting recess 21a is provided with two circular pushing recesses 21b. By using the two pushing recesses 21b, the connecting portion 24e can be mainly fitted easily into the mounting recess 21a, whereby the vibration absorbing member 24 can be quickly and reliably held in the mounting recess 21a.

  The pressing portions 24c and 24d of the absorbing portions 24a and 24b in the front and rear directions in the sliding direction protrude from the front and rear surfaces of the slide rail portion 21, respectively. A total of four pressing portions 24c and 24d protruding from one slide rail portion 21 are elastically pressed by the engaging portions 31a and 31b of the attached battery pack 30. In FIG. 4, two front pressing portions 24c are pressed against the rear surface of the front engaging portion 31a, and two rear pressing portions 24d are pressed against the front surface of the rear engaging portion 31b. Accordingly, the battery pack 30 is in a floating state in which the battery pack 30 is elastically supported by the battery mounting portion 20, and rattling of the battery pack 30 with respect to the battery mounting portion 20 is suppressed.

  As described above, the slide rail portion 21 is provided with at least two pressing portions 24c and 24d in the sliding direction, and the left and right slide rail portion 21 is provided with a total of eight pressing portions 24c and 24d. As a result, the pressing portions 24 c and 24 d are elastically pressed by the rail receiving portion 31 of the battery pack 30, thereby suppressing rattling in the front-rear direction orthogonal to the mounting direction of the battery pack 30. Also, vertical vibrations can be absorbed. The direction (engagement direction) orthogonal to the mounting direction (downward in FIG. 1) of the battery pack 30 is a direction perpendicular to the side view, and refers to the front-back direction in FIG. The vertical and horizontal directions are used with reference to the user holding the electric tool 1.

  According to the power tool 1 of the present embodiment configured as described above, when the battery pack 30 is mounted on the battery mounting portion 20, the pressing portions 24c and 24d provided on both sides of the slide rail portion 21 in the engagement direction are provided. The elastic members are elastically pressed by the rail receiving portions 31 of the battery pack 30, and the vibration of the battery pack 30 mainly in the engaging direction (the direction orthogonal to the sliding direction) is absorbed. By suppressing the vibration in the engagement direction perpendicular to the slide direction, for which conventional measures have been insufficient, problems such as chattering can be more reliably prevented.

  According to the illustrated embodiment, the absorbing portion 24a on the front side in the sliding direction and the absorbing portion 24b on the rear side in the sliding direction provided on the same slide rail have an integral structure connected to each other via the connecting portion 24e. Thereby, the handleability of the vibration absorbing member 24 as a component is improved, and the assemblability of the vibration absorbing member 24 to the slide rail portion 21 can be improved.

  Further, since the contact area between the slide rail portion 21 and the vibration absorbing portion 23 increases, the vibration absorbing member 24 is hardly detached. For example, even when a part of the vibration absorbing member 24 comes off, the other part is engaged with the slide rail portion 21, so that the entire vibration absorbing member 24 comes off and falls off the slide rail portion 21. Can be prevented.

  Further, by pushing the connecting portion 24e by using the pushing concave portion 21b, it is possible to make the connecting portion 24e hard to come off. By pushing the connecting portion 24e by using the pushing recess 21b, the connecting portion 24e can be disposed deeper than the mounting recess 21a, and the distance until the connecting portion 24e comes off from the slide rail portion 21 becomes longer. The vibration absorbing member 24 can be attached so as not to come off easily.

  Further, since the distal end surfaces of the pressing portions 24c and 24d are formed in an arc shape in the sliding direction, the movement resistance of the pressing portions 24c and 24d with respect to the rail receiving portion 31 when the battery pack 30 is attached or detached is reduced. Thus, the operability of mounting and removing the battery pack 30 can be secured.

  Various changes can be made to the embodiment described above. For example, the integrated structure in which the front-side absorbing portion 24a in the sliding direction and the rear-side absorbing portion 24b in the sliding direction are connected to each other by the connecting portion 24e is illustrated, but the connecting portion 24e is omitted and the front and rear absorbing portions are separated. May be adopted. The absorbing portions may be arranged at two places in the sliding direction as illustrated, or may be arranged at one place at the center in the sliding direction, or may be arranged at three or more places in the sliding direction.

  In addition, although the absorbing parts 24a and 24b before and after the sliding direction are integrally provided with the pressing parts 24c and 24d protruding from both sides in the engagement direction of the slide rail part 21, the respective pressing parts 24c and 24d are also respectively provided. It is also possible to adopt a configuration in which it is configured as a separate body and elastically fitted and fixed in a holding hole provided in the slide rail portion 21 individually. Further, the pressing portions 24c and 24d may be configured to be attached by bonding or the like.

  Furthermore, although the configuration in which the vibration absorbing section 23 is provided on the battery mounting section 20 side is illustrated, for example, a similar vibration absorbing section or an individual absorbing section or pressing section may be provided on the battery pack 30 side. FIG. 6 shows a battery pack 32 having a pair of left and right slide rail portions 32a. When the slide rail part 32a is provided on the battery pack 32 side and the rail receiving part for receiving the slide rail part 32a is provided on the battery mounting part 20 side of the tool body 10, the absorbing part 33a on the front side in the sliding direction and the rear side in the sliding direction are provided. An integrated vibration absorbing section 33 having an absorbing section 33b and a connecting section 33c for connecting the two absorbing sections 33a and 33b to each other can be provided on the slide rail section 33 of the battery pack 32. The pressing portions of the absorbing portions 33a and 33b before and after the sliding direction protrude from the upper surface or the lower surface of the slide rail portion 32a, respectively.

  According to the vibration absorbing structure of the second embodiment, the pressing portions of the vibration absorbing portions 33a and 33b provided on the slide rail portion 32a on the battery pack 32 side are elastically pressed by the rail receiving portion on the battery mounting portion side. Thus, vibration in the engagement direction orthogonal to the slide direction is suppressed. As shown in FIG. 6, a lock claw 32b formed by a convex portion is provided on the rear side of the battery pack 32 in the sliding direction. As described above, the lock claw 32b can be retracted downward by pushing the unlock button 32c downward in the figure. The attached state of the battery pack 32 is locked by the lock claw 32b, and the attached locked state can be released by pressing down the unlock button 32c.

  The illustrated pressing portions 24c and 24d can be provided on the slide rail portion side or on the rail receiving portion side. In addition, as shown in FIGS. 7 to 10, the slide rail portion or the rail receiving portion is provided regardless of whether the slide rail portion is provided on the battery mounting portion side of the tool body 10 or the slide rail portion is provided on the battery pack side. It can be provided on the part side or both.

  FIGS. 7 and 8 illustrate a case in which a slide rail portion 42 is provided on the battery mounting portion 41 side of the tool main body 40 and a rail receiving portion 44 is provided on the battery pack 43 side. In such a case, the pressing portions 45 are provided on both sides of the slide rail portion 42 in the engaging direction as shown in FIG. 7, or the pressing portions 46 are provided on both sides of the engaging direction of the rail receiving portion 44 as shown in FIG. It can be configured.

  9 and 10 illustrate a case in which a rail receiving portion 52 is provided on the battery mounting portion 51 side of the tool main body 50 and a slide rail portion 54 is provided on the battery pack 53 side. In such a case, the pressing portions 55 are provided on both sides in the engagement direction of the slide rail portion 54 on the battery pack 53 side as shown in FIG. 9 or the rail receiving portions 52 on the battery mounting portion 51 side as shown in FIG. The pressing portions 56 may be provided on both sides in the engagement direction of the first embodiment. As described above, the slide-mount type battery pack is attached to the battery attachment portion of the tool main body, and the other slide rail portion is inserted into one of the U-shaped rail receiving portions, and the insertion direction ( In the configuration in which the elastic member is engaged in the engagement direction orthogonal to the slide direction), the elastic body is sandwiched and pressed on both surfaces of the rail receiving portion and the slide rail portion in the engagement direction, so that the vibration in the engagement direction of the battery pack is reduced. It can be suppressed efficiently.

  The vibration absorbing part described above is not limited to the multi-roots (power tool 1) that swings the tip blade T at a fixed angle around the axis of the spindle 4, but may be other power tools such as a screw tightener and a cutting tool. The present invention can be widely applied as a countermeasure against vibration of a power tool using a slide-attached battery pack as a power source.

  Further, the attached battery pack is not limited to the illustrated 10.8 V output battery pack, but can be similarly applied to, for example, a 14.4 V or 18 V output battery pack. Further, the mounting type of the battery pack is not limited to the slide mounting type having the illustrated box, and the same applies to the plug-in mounting type battery pack 63 having a cluster shape as shown in FIGS. 11 and 12, for example. Can be applied. In the case of this plug-in type battery pack 63, the power tool 60 includes a substantially cylindrical battery mounting portion 61. The battery pack 63 is attached by being inserted into the battery attachment portion 61.

  A pair of engaging portions 62 are provided in the battery mounting portion 61 so as to face each other. A pressing portion 65 is provided on each of the engagement portions 62. The pressing portions 65 are provided at two places in the mounting direction. Each pressing portion 65 is provided on both surfaces (front and rear in the rotation direction, that is, one side and the other side) of the engaging portion 62. The battery pack 63 is provided with an engagement receiving portion 63 a having a U-shaped cross section for engaging the engaging portion 62. When the battery pack 63 is moved in the mounting direction indicated by the outline arrow in FIG. 11 and inserted into the battery mounting portion 61, the pressing portions 65 are elastically pressed on both surfaces of the engagement receiving portion 63a. As described above, even when the mounting type of the battery pack is the plug-in mounting type, the same operation and effect can be obtained by applying the above-described vibration absorbing member. In particular, rattling in the rotation direction with respect to the axial direction in the front-rear direction can be suppressed, and vibration in the rotation direction can be absorbed.

  Further, the plug-in type battery pack 75 having a cluster shape may have an elastic support structure as shown in FIG. 13, for example. Two annular elastic members (for example, rubber rings) 72 and 73 are attached along the inner peripheral surface of the battery attachment portion 71 of the power tool 70. The two elastic members 72 and 73 are arranged at regular intervals in the mounting direction. The battery pack 75 is provided with a pair of left and right lock arms 76. Both lock arms 76 are supported via a support shaft 77 so as to be tiltable left and right (up and down in FIG. 13). The distal ends of the two lock arms 76 are formed in the shape of a chevron to form an engaging portion 76a.

  In a state where the battery pack 75 is inserted into the battery mounting portion 71, the engaging portions 76a of the lock arms 76 are elastically pushed between the two elastic members 72 and 73, so that the battery pack 75 is moved in the front-rear direction (front and rear). Elastic support (floating support) can be provided from the rear side (that is, one side and the other side), whereby vibration in the front-rear, left-right, and up-down directions in the mounting direction of the battery pack 75 can be absorbed or reduced.

  Note that the structure may be the reverse of that of FIG. That is, a convex portion that can be moved by operation is arranged on the housing. A concave portion in which the convex portion can be fitted is formed in a cluster (plug-in) battery pack. The two elastic bodies are held in the concave portion of the battery pack. The protrusions may be arranged so that the elastic body is held in the front-rear direction (one side and the other side). At this time, instead of the two elastic bodies, one elastic body having a concave portion may be used, and the convex portion may be held in the front-rear direction by the concave portion.

  Needless to say, the power tool having the cluster type battery pack shown in FIGS. 11 to 13 can be applied to various tools. The present invention can be applied to garden tools such as an electric hedge trimmer and an electric chain saw, in addition to an electric screwdriver, an electric saw and an electric hammer.

1: Electric power tool (multi-tool)
DESCRIPTION OF SYMBOLS 2 ... Body housing, 2a ... Grip part 3 ... Electric motor, 3a ... Output shaft 4 ... Spindle 5 ... Drive shaft, 5a ... Eccentric shaft part 6, 7 ... Bearing 8, 9 ... Bearing 10 ... Tool body 11 ... Inner flange 12 ... Outer flange 13... Actuating arm 13a... Arm 14. Eccentric roller 15. Main switch 16... Start switch 16a... Arm T. Tip blade 20... Battery mounting part 21. Push recess 22 Connection terminal 23 Vibration absorber 24 Vibration absorber 24a Absorber (front side in slide direction)
24b: Absorber (sliding direction rear side)
24c, 24d: pressing part, 24e ... connecting part 25 ... fitting concave part 26 ... locking claw receiving part 30 ... battery pack 31 ... rail receiving parts 31a, 31b ... engaging part 32 ... battery pack 32a ... slide rail part 33 ... vibration absorption Part 33a: absorbing part (front side in the sliding direction)
33b ... absorber (sliding direction rear side)
33c connecting parts 40, 50 tool bodies 41, 51 battery mounting parts 42, 54 slide rail parts 43, 53 battery packs 44, 52 rail receiving parts 45, 46, 55, 56 pressing parts 63, 75 … Battery pack

Claims (16)

An electric tool having a battery mounting part for mounting a battery pack of a slide mounting type as a power supply, in which an electric motor is internally provided as a driving source,
The battery mounting portion includes a slide rail portion which is engaged with an engagement direction orthogonal to a slide direction with respect to a rail receiving portion having a U-shaped cross section provided in the battery pack, wherein the engagement direction of the slide rail portion is On both surfaces of the battery pack, a pressing portion for elastically pressing against a rail receiving portion of the battery pack is provided,
The power tool, wherein the pressing portion is arranged at a plurality of positions in a sliding direction of the battery pack with respect to the battery mounting portion, and is connected to each other to form an integral part. The power tool according to claim 1,
A power tool in which the pressing portions on both surfaces in the engagement direction are joined together to form an integral part. The power tool according to claim 1 or 2,
The electric tool, wherein the pressing portion is fitted and held in a mounting recess provided in the slide rail portion by using its own elastic force, and is mounted. The power tool according to any one of claims 1 to 3,
An electric tool in which a pressing surface of the pressing portion has an arc shape. The power tool according to any one of claims 1 to 4,
As an integral part, a vibration absorbing member extending in a sliding direction of the battery pack with respect to the battery mounting portion is provided,
An electric tool, wherein the vibration absorbing member includes absorbing portions at both ends of a connecting portion extending in the sliding direction, and the pressing portions protruding to both sides in an engaging direction orthogonal to the sliding direction. The power tool according to claim 5, wherein
The power tool according to claim 1, wherein the absorbing unit has a portion that protrudes in the sliding direction in addition to the pressing unit. The power tool according to claim 5, wherein
The power tool extends in the sliding direction. The power tool according to any one of claims 5 to 7,
The slide rails are symmetrically arranged on both left and right sides of the battery pack in the sliding direction of the battery pack, and the vibration absorbing members are symmetrically arranged on the slide rails arranged symmetrically. Power tool. The power tool according to any one of claims 5 to 8,
An electric tool, wherein the entire vibration absorbing member is an elastic body made of rubber and is fitted and held in a mounting concave portion provided in the slide rail portion by using its own elastic force. An electric tool having a battery mounting part for mounting a battery pack of a slide mounting type as a power supply, in which an electric motor is internally provided as a driving source,
The battery mounting portion includes a rail receiving portion having a U-shaped cross section for engaging a slide rail portion included in the battery pack in an engaging direction orthogonal to a sliding direction, and the rail receiving portion includes a slide rail portion of the battery pack. A pressing portion for elastically pressing on both surfaces in the engagement direction is provided,
The power tool, wherein the pressing portion is arranged at a plurality of positions in a sliding direction of the battery pack with respect to the battery mounting portion, and is connected to each other to form an integral part. An electric tool having a battery mounting portion for mounting a battery pack as a power supply to the main body equipped with an electric motor as a driving source,
A slide rail portion as an engagement portion is provided on one of the battery attachment portion or the battery pack, and the slide rail portion is engaged with the other at right angles as an engagement receiving portion for engaging the engagement portion with the slide direction. A rail receiving portion having a U-shaped cross section that engages in the direction is provided, and pressing portions elastically sandwiched and pressed between the engaging portion and the engaging receiving portion are interposed on both surfaces in the engaging direction. ,
The power tool, wherein the pressing portion is arranged at a plurality of positions in a sliding direction of the battery pack with respect to the battery mounting portion, and is connected to each other to form an integral part. The power tool according to any one of claims 1 or 10 or 11,
An electric tool in which a spindle to which a tip blade is attached is rotatably supported around an axis orthogonal to an output shaft of the electric motor. The power tool according to claim 12, wherein
An electric tool having a reciprocating swing mechanism interposed between the spindle and the output shaft for swinging the spindle at a predetermined angle around an axis. The power tool according to claim 12 or 13,
A power tool including a cylindrical main body housing functioning as a grip to be gripped by a user, the electric motor being mounted inside the main body housing, the spindle provided at a front part of the main body housing, and the battery mounting part provided at a rear part of the main body housing. The power tool according to any one of claims 12 to 14, wherein
An electric tool in which a sliding direction of the battery pack coincides with an axial direction of the spindle. A battery pack of a slide attachment type attached to a battery attachment portion of a power tool,
A sliding guide portion that is engaged with the battery mounting portion in an engaging direction orthogonal to a sliding direction, and is provided on both sides of the sliding guide portion in the engaging direction with elasticity with respect to the battery mounting portion; Is provided with a pressing portion for pressing the
The pressing portion is disposed at a plurality of positions in a sliding direction of the battery pack with respect to the battery mounting portion, and is connected to each other to form an integral part.

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