The present application is a U.S. National Phase entry of, and claims priority to, PCT Application No. PCT/JP2019/009283, filed Mar. 8, 2019, which claims priority to Japanese Patent Application No. 2018-055485, filed Mar. 23, 2018, both of which are incorporated herein by reference in their entireties for all purposes.
The present disclosure relates to a coupling member for an electric power tool, more specifically, a coupling member for an electric power tool, which serves to hook a hanging member to an electric power tool main body.
Conventionally, various measures have been taken to prevent an electric power tool from falling from a height during work. Here, Patent Literature 1 (Japanese Laid-Open Patent Publication No. 2005-199396) discloses an electric power tool provided with a strap, which can be hooked to a hook or the like attached to a handrail or a scaffold (hereinafter, referred to as a “hook at workplace”). Herewith, for example, even when a hand-held electric power tool is accidentally dropped, the dropped electric power tool can be kept suspended to the hook at workplace via the strap, when the front end of the strap is hooked to the hook at workplace. As a result, the dropped electric power tool can be prevented from being damaged, since the electric power tool does not collide against the floor (the electric power tool does not receive an impact from the floor).
However, according to a technique as described above in Patent Literature 1, the electric power tool may break due to an impact against the floor caused by being dropped, if the hand-held electric power tool is accidentally dropped before the strap is hooked to the hook at workplace. In this case, because a holding portion of the electric power tool for holding the strap (for example, a loop handle when the electric power tool is a hammer drill) breaks, this strap could not be kept being held afterwards.
The present disclosure is to solve this problem, and the object thereof is to provide a coupling member for an electric power tool, which can keep the hanging member being held even if the holding portion that holds the hanging member breaks.
According to one aspect of the present disclosure, a coupling member of an electric power tool, which allows a hanging member to be hooked to an electric power tool main body, is configured to be able to be fastened to the electric power tool main body when part or it opens or closes. Further, this coupling member can be attached to the electric power tool main body while the electric power tool main body is fastened therein or removed therefrom. Further, a hanging member can be hooked to this coupling member.
Therefore, even if a part of the electric power tool provided for the hanging member breaks due to an impact against a floor when dropped, a fastening body of the coupling member can keep the state in which the electric power tool main body is fastened therein. Therefore, as a result of the hanging member can be kept being hooked to the coupling member, the hanging member can also be kept being held.
According to another aspect of the present disclosure, the opening/closing may be achieved by coupling via a hinge.
Therefore, a part of the coupling member can be smoothly opened/closed.
Further, according to another aspect of the present disclosure, the coupling member for the electric power tool includes one or more fastening body capable of fastening the electric power tool main body, and one or more attachment body openably/closably coupled to the fastening body via one or more hinge, so as to be attached to the electric power tool main body while the electric power tool main body is fastened in the one or more fastening body.
The configuration of the coupling member can therefore be simplified.
Further, according to another aspect of the present disclosure, the attachment bodies are provided so as to form a pair. Also, hook parts each having a through hole configured to allow a hanging member to be hooked are provided so as to form a pair.
The pair of the through holes of the hook parts are arranged to be adjacent to each other when the pair of attachment bodies are attached to the electric power tool main body, while the electric power tool main body is fastened in the one or more fastening body.
Therefore, when the hanging member is hooked to the coupling member through the both through holes, the coupling member can be kept being attached to the electric power tool main body even if, for example, a screw/screws for attaching the coupling member to the electric power tool main body is/are removed. Accordingly, the degree of measures for preventing the electric power tool from falling can be enhanced.
Further, according to another aspect of the present disclosure, the pair of the attachment bodies are attached to the electric power tool main body by fastening a screw/screws.
The coupling member can thus be easily attached to the electric power tool main body.
Further, according to another aspect of the present disclosure, engagement portions are formed on the pair of the attachment bodies. The engagement portions of the pair of attachment bodies engage with portions to-be-engaged formed in the electric power tool main body. This engagement occurs when the pair of attachment bodies are attached to the electric power tool main body, while the electric power tool main body is fastened in the one or more fastening body.
The applied load exerted between the electric power tool and the hanging member can be dispersed when, for example, the dropped electric power tool is suspended by the hook at the workplace via the handing member. Therefore, it is possible to prevent, for example, a concentration of the load being applied to the screws for attaching the coupling member to the electric power tool main body.
Further, according to another aspect of the present disclosure, a silencer member is fitted and inserted into the hinge.
This prevents abnormal noise from being generated when the one or more fastening body and the pair of attachment bodies are relatively rotated.
Further, according to another aspect of the present disclosure, the pair of fastening bodies of the coupling member of the electric power tool are coupled via the one or more hinge, such that the electric power tool main body can be fastened thereinto. A hook part configured to allow the hanging member to be hooked is integrally formed with at least one of the pair of the fastening bodies.
Therefore, the configuration of the coupling member can be simplified.
Further, according to another aspect of the present disclosure, the coupling member for the electric power tool is attached to a loop handle of the electric power tool.
Accordingly, the one or more fastening body of the coupling member can keep the electric power tool main body being fastened therein, even if the portion of the electric power tool previously provided for the hanging member breaks due to an impact against the floor from being dropped. It is thus possible to keep the hanging member being held to the coupling member and, as a consequence, allowing the hanging member to be kept being hooked to the tool.
Hereinafter, embodiments for carrying out the present disclosure will be described with reference to drawings
Firstly, a first embodiment of the present disclosure will be described with reference to
First of all, the hammer drill 1 will be described (see
The hammer drill 1 has a percussive impact mechanism (not shown) for converting a rotational force of the output shaft of the motor to a percussive impact force for a drill bit (not shown). The hammer drill 1 also has a rotary mechanism (not shown) for converting the rotational force of the output shaft of the motor to a rotational force for the drill bit. A trigger 14 is attached to this loop handle 12, which is configured to turn an internal switch (not shown) ON when pulled by an operator.
Further, attachment holes 17 are formed on a bottom surface 16 of a lower part 15 of this loop handle 12, so as to form a pair on the left and right sides to allow later-described screws 60, which are used for attaching the coupling member 20, to be screwed thereinto. Further, recessed grooves 18 are formed on the bottom surface 16 of this loop handle 12, so as to form a pair on the left and right sides to allow respective first raised pieces 42 of left and right attachment bodies 40, which are used for attaching the coupling member 20, to be inserted (see
Further, when an operator (not shown) pulls the trigger to operate while grasping the grip portion 13 of the loop handle 1, an electric signal (ON signal of the trigger 14) is input to a controller (not shown) incorporated to the motor housing 11. This allows the output shaft of the motor to rotate, so that the rotational force of the output shaft of this motor is converted to the percussive impact force for the drill bit via the percussive impact mechanism.
As a result, the percussive motion of the drill bit can be carried out. Simultaneously, the rotational force of the output shaft of this motor is converted to the rotational for the drill bit via the rotary mechanism. This allows the drill bit to carry out the rotational motion. Therefore, since the percussive impact force and the rotational force can be applied to the drill bit, drilling operation into, for example, a gypsum material or the like can be efficiently carried out. The hammer drill 1 is composed in this manner.
Hereinafter, a coupling member 20 will be described (see
Additionally, the attachment bodies 40 may be formed of two mirrored attachment bodies 40. Each of these attachment bodies 40 may be formed by bending a metal member, so as to have a base 41, which may be rectangular, and four raised pieces 42, 43, 44, 45 (first raised piece 42, second raised piece 43, third raised piece 44, and fourth raised piece 45) projecting from edges of four sides of the base 41. An insertion hole 41a is formed in each of these bases 41 to allow a screw 60 to be inserted.
This first raised piece 42 is formed so that it can be inserted into the recessed groove 18 in the loop handle 12 of the hammer drill 1. Further, this second raised piece 43 is hinge-coupled to the end 32 of the fastening body 30. Specifically, the attachment bodies 40 are coupled to the fastening body 30 via the hinges 80. One end 52 of the hook part 50 is fixed to this third raised piece 44 by welding. Further, the other end 53 of the hook part 50 is fixed to this fourth raised piece 45 by welding.
Since it is fixed in this way, the hook parts 50 are provided at the attachment bodies 40. These hook parts 50 may be formed by bending a metal wire member so as to each have a through holes 51 to which the strap 70 can be hooked. These hook parts 50 are arranged so that one through hole 51 is adjacent to the through hole 51 of the other hook part 50 when the coupling member 20 is attached to the loop handle 12 of the hammer drill 1 (see
The pair of the attachment bodies 40 configured in this manner are coupled to the fastening body 30 via the hinges 80, as already described. The pair of the attachment bodies 40 can thus be rotated relative to the fastening body 30 about axes of both ends 32 of the fastening body 30 (see
Next, steps for hooking the strap 70 to the loop handle 12 of the hammer drill 1 will be described. Firstly, the pair of the attachment bodies 40 are rotated (opened) such that the fastening space 31 of the coupling member 20 is opened (see
The respective first raised pieces 42 of the rotated pair of the attachment bodies 40 are then inserted into the respective recessed grooves 18 of the loop handle 12 (see
In this way, the coupling member 20 may be attached to the loop handle 12 of the hammer drill 1. A coupling member 20 attached in this way is arranged such that each of the through holes 51 of the pair of hook parts 50 are adjacent to each other, as already described. Finally, the strap 70 is hooked into each of the through holes 51 of the coupling member 20 (see
The coupling member 20 according to the first embodiment of the present disclosure may be configured as described above. According to this configuration, the coupling member 20 can be fastened to the loop handle 12 of the hammer drill 1 by opening/closing a part of the coupling member 20. Further, the coupling member 20 can be attached to and removed from the loop handle 12, with the loop handle 12 being fastened therein. Further, the strap 70 can be hooked to the coupling member 20 attached to the loop handle 12. Therefore, even when the loop handle 12 (a holding portion for holding the strap 70) of the hammer drill 1 breaks due to, for instance, an impact against a floor (not shown) by being dropped, the coupling member 20 can maintain a state in which the loop handle 12 is fastened therein. Since the strap 70 is also kept hooked to the coupling member 20, as a result, this strap 70 can also be kept held (hooked) to the tool.
With this configuration, a part of the coupling member 20 can be opened/closed via the hinges 80. The part of the coupling member 20 can therefore be smoothly opened/closed, for instance without the need to substantially bend the fastening body 30.
Further, according to this configuration, the coupling member 20 includes a fastening body 30 into which the loop handle 12 of the hammer drill 1 is fastened, and a pair of the attachment bodies 40 openably/closably coupled to the fastening body 30 via the hinges 80. The coupling member 20 is configured so as to be attached to the loop handle 12, while the loop handle 12 is fastened in the fastening body 30. The configuration of the coupling member 20 can therefore be simplified.
Further, according to this configuration, the hook parts 50 are configured by bending metal wire members and are provided in a pair so as to have through holes 51 through which the strap 70 can be hooked. These hook parts 50 are arranged such that one through hole 51 is adjacent to the through hole 51 of the other hook part 50, when the coupling member 20 is attached to the loop handle 12 of the hammer drill 1. Therefore, when the strap 70 is inserted through both insertion holes 51, so as to be hooked to the coupling member 20, the attached state of the coupling member 20 to the loop handle 12 can be maintained even if, for example, the screw(s) 60 for attaching the coupling member 20 to the loop handle 12 is/are removed. As a result, the degree of measures for preventing the hammer drill 1 from falling can be enhanced.
Further, according to this configuration, the pair of attachment bodies 40 are attached to the loop handle 12 by tightening the screws 60. Therefore, the pair of attachment bodies 40 can be easily attached to the loop handle 12. Accordingly, the coupling member 20 can be easily attached to the loop handle 12.
Further, according to this configuration, the first raised pieces 42 are formed as part of the pair of the attachment bodies 40. When the pair of the attachment bodies 40 of the coupling member 20 are attached to the loop handle 12 of the hammer drill 1, the respective first raised pieces 42 of the pair of the attachment bodies 40 are inserted into the respective recessed grooves 18 of the loop handle 12. Therefore, when the dropped hammer drill 1 is suspended by, for example, the hook at workplace, via the strap 70, the load exerted between the hammer drill 1 and the strap 70 can be dispersed. It is thus possible to prevent a concentration of the load being applied to the screws 60.
Further, according to this configuration, the resin sleeves 33 are fittedly inserted between both ends 32 of the fastening body 30 and the respective second raised pieces 43 of the pair of the attachment bodies 40 when coupled via the hinges 80. It is thus possible to prevent abnormal noise from being generated, even when the fastening body 30 is rotated relative to the pair of the attachment bodies 40.
Hereinafter, a second embodiment of the present disclosure will be described with reference to
The coupling member 120 of the second embodiment is mainly composed of a pair of fastening bodies 130 (two fastening bodies 130 in a pair). More specifically, this coupling member 120 is composed of two parts. Each fastening body 130 may be formed by bending a metal wire member, such that a fastening space 131 for the lower part 15 of the loop handle 12 of the hammer drill 1 is formed when respective one ends 132 are hooked to each other, as will be described later.
One end 132 of the fastening body 130 is bent into a hook-shape, such that one end 132 of the other fastening body 130 can be hooked (such that the one end 132 of each can be hooked to each other). Hook parts 150 with through holes 151, which correspond to the hook parts 50 with the through holes 51 as described in the first embodiment, are bent and formed at the midway of each fastening body 130. Further, attachment bodies 140, each having a through hole 141 for allowing a screw (not shown) to be inserted, are fixed to the other ends 133 of this fastening body 130 by welding.
The pair of fastening bodies 130 may be configured in this manner. The pair of fastening bodies 130 configured in this manner are coupled such that the respective one ends 132 are coupled so as to be hooked to each other. When coupled in this manner, the pair of the fastening bodies 130 are coupled via a hinge 160, so as to be rotatable about the axis of the fastening space 131 in an axial direction (forward/rearward direction). This allows the pair of fastening bodies 130 to rotate relatively about the axis of this hinge 160 (see
Next, steps for hooking the strap 70 to the loop handle 12 of the hammer drill 1 will be described. Firstly, the pair of the fastening bodies 130 are rotated (opened) such that the fastening space 131 of the coupling member 120 is opened (see
Next, screws are respectively inserted into each of the insertion holes 141 formed in both attachment bodies 140 of the coupling member 120, such that these inserted screws are screwed into each of the attachment holes (not shown) of the loop handle 12. Consequently, both attachment bodies 140 of the coupling member 120 are fixed to the loop handle 12 of the hammer drill 1. The coupling member 120 may be attached to the loop handle 12 of the hammer drill 1 in this way.
The coupling member 120 attached in this way is arranged such that each of the through holes 151 of both hook parts 150 is arranged to be adjacent to one other, similar to that described for the first embodiment. Finally, the strap 70 is hooked into each of the through holes 151 of the coupling member 120. This allows the strap 70 to be hooked to the loop handle 12 of the hammer drill 1. Further, to remove the hooked strap 70, the above-mentioned steps can be performed in the opposite sequences.
The coupling member 120 according to the second embodiment of the present disclosure may be configured as described above. According to this configuration, it is possible to obtain the same action effect as that of the coupling member 20 according to the first embodiment.
Next, a third embodiment of the present disclosure will be described with reference to
The coupling member 220 of the third embodiment is mainly composed of a fastening body 230 and a fixture body 270. More specifically, this coupling member 220 may be composed of two parts. This fastening body 230 may be formed by bending a metal wire member, so as to have a fastening space 231 for the lower part 15 of the loop handle 12 of the hammer drill 1. Both ends 232, 233 of this fastening body 230 are bent rearward along the axial direction (frontward/rearward direction) of the fastening space 231.
A retaining claw 232a for preventing a hinge 280 (which comprises a bent piece 272a of the fixture body 270), which will be described later, from being removed is formed on this one end 232. A hook part 250 with a through hole 251, corresponding to the hook part 50 with the through hole 51 as described in the first embodiment, is bent and formed at the midway of this fastening body 230, at a position closer to the other end 233. An attachment body 240 having a base 241, a first raised piece 242 formed of a right edge of the base 241, and a pair of second raised pieces 243 formed of a rear edge of the base are formed on the side of the other end 233 of this fastening body 230.
This base 241 is formed with a pair of insertion holes 241a into which screws 260, which will be described later, can be inserted, and a recess 241b positioned between the pair of the insertion holes 241a. Further, the first raised piece 242 is formed with an insertion hole (not shown), into which a later described screw 261 can be inserted. A nut 242a can be screwed onto the screw 261 inserted into the insertion hole.
Further, the pair of the second raised pieces 243 are formed so as to correspond to each of the first raised pieces 42 of the pair of the attachment bodies 40 of the first embodiment. The first raised piece 242 of the third embodiment and the recess 241b in the base 241 of the attachment bodies 240 configured in this manner are fixed in place by welding, so as to extend over the end 233 of the fastening body 230 and the hook part 250. The fixture body 270 is made of a metal component capable of closing both ends 232, 233 of the fastening body 230.
An insertion hole (not shown) to allow the screw 261, which can be fixed by the nut 242a of the attachment body 240, to be inserted is formed in one end 271 of the fixture 270. Further, a bent piece 272a is formed at the other end 272 of the fixture body 270. This bent piece 272a is hinge-coupled to the one end 232 of the fastening body 230. In other words, the fixture body 270 is coupled to the fastening body 230 via the hinge 280.
This allows the fastening body 230 and the fixture body 270 to rotate relative to one another about the axis of the one end 232 of the fastening body 230 (see
Subsequently, steps for hooking the strap 70 to the loop handle 12 of the hammer drill 1 will be described. Firstly, the fixture 270 is rotated (opened) such that the fastening space 231 of the coupling member 220 is opened (see
Next, screws 260 are respectively inserted into each of the insertion holes 241a of the attachment body 240 of the coupling member 220, such that these inserted screws 260 are screwed into each of the attachment holes (not shown) of the loop handle 12. Consequently, the attachment body 240 of the coupling member 220 is fixed to the loop handle 12 of the hammer drill 1. As a result, the attachment body 240 of the coupling member 220 is fixed to the loop handle 12 of the hammer drill 1.
Finally, the strap 70 is hooked into the through hole 251 of the coupling member 220. This allows the strap 70 to be hooked to the loop handle 12 of the hammer drill 1. Further, to remove the hooked strap 70, the above-mentioned steps can be performed in the opposite sequences.
The coupling member 220 according to the third embodiment of the present disclosure may be configured as described above. With this configuration, it is possible to obtain the same action effect as that of the coupling members 20, 120 according to the first or second embodiment.
Finally, a fourth embodiment of the present disclosure will be described with reference to
A coupling member 320 according to the fourth embodiment of the present disclosure may be configured as described above. With this configuration, it is possible to obtain the same action effect as that of the coupling member 20, 120, 220 according to the first to third embodiments.
The above description relates to only some embodiments of the present invention and is not intend to limit the present invention to the above description.
In each of the embodiments, the “hammer drill 1,” the “loop handle 12,” and the “strap 70” have been described as respective examples for an “electric power tool,” an “electric power tool body,” and a “hanging member”. However, the scope shall not be limited to these, and may also include “various electric power tools,” “various housings for electric power tools,” a “hook provided on a wall, etc.,” or the like.
Further, in each of the embodiments, examples have been described in which the fastening bodies 30, 130, 230, the attachment bodies 40, 140, 240, the hook parts 50, and the fixture body 270 are made of metal components. However, the scope shall not be limited to these components, and may also be made of any other materials (for example, various types of resin).
Further, in each of the embodiments, opening and closing via the “hinge 80” has been described as an example of the “opening and closing of a part of the coupling member 20.” However, the scope shall not limited to this, and the device may be opened and closed by any other components, as long as a part of the coupling member 20 can be opened and closed.
Further, in each of the embodiments, the “resin sleeve 33” has been described as an example of a “silencer.” However, the shall not be limited to this, and any other components may be used, as long as such a component can prevent generation of abnormal noises.
Further, in the first embodiment, the “first raised piece 42” and the “recessed groove 18 of the loop handle 12” have been respectively described as an example of an “engagement portion” and a “portion to-be-engaged”. However, the scope shall not be limited to these, and may have any structure, as long as one or a pair of attachment bodies 40 may engage the loop handle 12.
Number | Date | Country | Kind |
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JP2018-055485 | Mar 2018 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2019/009283 | 3/8/2019 | WO |
Publishing Document | Publishing Date | Country | Kind |
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WO2019/181557 | 9/26/2019 | WO | A |
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Number | Date | Country |
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205085941 | Mar 2016 | CN |
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Entry |
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May 28, 2019 International Search Report issued in International Patent Application No. PCT/JP2019/009283. |
May 28, 2019 Written Opinion of the International Searching Authority issued in International Patent Application No. PCT/JP2019/009283. |
Number | Date | Country | |
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20210107130 A1 | Apr 2021 | US |