WO2011111465A1 - 電動工具におけるソケットの脱落防止構造 - Google Patents
電動工具におけるソケットの脱落防止構造 Download PDFInfo
- Publication number
- WO2011111465A1 WO2011111465A1 PCT/JP2011/052824 JP2011052824W WO2011111465A1 WO 2011111465 A1 WO2011111465 A1 WO 2011111465A1 JP 2011052824 W JP2011052824 W JP 2011052824W WO 2011111465 A1 WO2011111465 A1 WO 2011111465A1
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- WO
- WIPO (PCT)
- Prior art keywords
- socket
- ring
- impact driver
- connection
- carabiner
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
Definitions
- the present invention relates to a structure for preventing a socket attached to an output shaft from falling off in an electric power tool such as an impact driver.
- sockets are used as tip tools when tightening bolts and nuts.
- This socket is attached by attaching via a drill bit or the like attached to an output shaft protruding forward from the housing, or by directly attaching a bit portion provided integrally with the socket to the output shaft.
- a drop-off preventing structure as disclosed in Patent Document 1 is employed. This has a structure in which a jig having a ring is attached to the outer periphery of the tool mounting portion in the socket, and the ring and the electric tool are connected by a fixture that is a connecting body.
- the fixture since the fixture is attached to the belt-like body wound around the housing of the electric tool, it is troublesome to attach and detach the belt-like body. There are cases where it cannot be adopted because it interferes with the original function, such as by blocking the air inlet / outlet.
- the band-shaped body In addition to the fact that the band-shaped body causes irregularities on the surface of the housing, in addition to impairing compactness, the band-shaped body may get in the way or get caught around during work, and the feeling of use and usability deteriorates. End up.
- an object of the present invention is to provide a structure for preventing a socket from falling off in a power tool that can prevent the socket from falling off with a simple and compact configuration without being affected by the model or impairing the usability or usability. It is what.
- the invention according to claim 1 is a structure for preventing a socket from falling off in a power tool, wherein the power tool has an output shaft protruding in front of the housing, and is detachably attached to the output shaft. And a connecting member for connecting the power tool and the socket to each other to prevent the socket from falling off, wherein the power tool is detachably provided with a connecting member capable of connecting the connecting body.
- the invention according to claim 2 is characterized in that, in the configuration of claim 1, the connecting member is formed in a ring shape having a connecting portion of the connecting body on the outer periphery.
- the connection body in the configuration of the first or second aspect, includes a hook member at least at an end portion, and the connection with the connection member is a through-locking of the hook member. It is what.
- the connecting member in the configuration of the first or second aspect, is provided on an outer periphery of a cylindrical shaft support portion that is formed at the front end of the housing and supports the output shaft. Is.
- the connecting member in the configuration of the second aspect, is provided so that the mounting position in the circumferential direction can be changed.
- connection member in the configuration of the second aspect, is a connection ring that is a pair of clamp pieces that are partly cut and both ends have a predetermined interval, and is penetrated by one clamp piece.
- the butterfly bolt is screwed into a nut fitted to the other clamp piece, and the connecting ring can be attached and detached by rotating the butterfly bolt.
- a ridge is formed in the circumferential direction on the inner periphery of the connecting ring, and the groove is fitted into the mounting position of the connecting ring in the power tool. Is formed.
- the connecting portion is a protrusion having a through hole.
- the connecting member in the configuration of the second aspect, is a connecting ring that is formed by forming a female screw portion on the inner periphery and screwing with a male screw portion provided on the electric power tool. It is characterized by this.
- the invention described in claim 10 is characterized in that, in the configuration of claim 9, a plurality of teeth are formed continuously on the outer periphery of the connecting ring.
- a protrusion is provided on one of the inner peripheral surface of the connecting member and the outer peripheral surface of the power tool, and the other is protruded along with the mounting operation of the connecting member
- the guide member is provided with an introductory groove into which the lead enters and a circumferential concave groove communicating with the introductory groove, and the connecting member can be attached to and detached from the electric tool by bayonet coupling.
- the protector in the configuration of the first aspect, the protector is detachably mounted on the electric tool, the connecting portion of the connecting body is provided on the protector, and the protector is also used as a connecting member. Is.
- the first aspect of the present invention it is possible to easily provide the existing power tool with the function of preventing the socket from falling off without interfering with the original function.
- the connecting member can be easily attached and detached and does not protrude greatly from the electric tool even after the connecting member is attached, the compactness is not lost, and the connecting member is unlikely to get in the way or get caught around. Accordingly, it is possible to maintain a good feeling and usability.
- attachment / detachment operation to an electric tool becomes easier by making a connection member into the ring shape.
- the reliability of drop-off prevention is enhanced by using the hook member as a through lock.
- the connecting member in addition to the effect of claim 1 or 2, can be arranged at an optimal position that is easy to connect to the connecting body and does not interfere with the function of the power tool. it can.
- the connecting body in addition to the effect of claim 2, can be connected at an appropriate position according to the form and work of the power tool, and the usability is improved.
- FIG. 3 is a partial longitudinal sectional view of an impact driver according to mode 1.
- FIG. 3 is a sectional view taken along line AA in FIG. 2.
- It is explanatory drawing of the impact driver of the form 2 (A) shows a side surface, (B) shows a front surface, respectively.
- FIG. 23 is a cross-sectional view taken along the line EE of FIG. It is explanatory drawing of the impact driver of the form 9, (A) shows a side surface, (B) shows a front, respectively. It is a partial longitudinal cross-sectional view of the impact driver of form 9.
- FIG. 25 is a sectional view taken along line FF in FIG. 24. It is explanatory drawing of the impact driver of the form 10, (A) shows a side surface, (B) shows a front surface, respectively.
- FIG. 32 is a sectional view taken along line HH in FIG. 31. It is a perspective view of the impact driver of form 12. It is an expansion perspective view of the connection projection part of the impact driver of form 12. It is a perspective view of the impact driver of form 13. It is explanatory drawing of the impact driver of the form 13, (A) shows a side surface, (B) shows a front surface, respectively. It is a partial longitudinal cross-sectional view of the impact driver of form 13. It is a perspective view of the impact driver of form 14. It is a longitudinal cross-sectional view of the light unit part of the impact driver of form 14. It is explanatory drawing which shows the example of a change of a coupling body. It is explanatory drawing which shows the state which suspended the socket independently. It is explanatory drawing which shows the specific example of a control means. It is explanatory drawing which shows the specific example of a control means.
- [Form 1] 1 to 4 show an example of a structure for preventing the socket from falling off.
- 1A is an impact driver as an electric tool.
- the impact driver 1A is formed by assembling the left and right half housings 3 and 3, and a main body housing 2 made of synthetic resin for housing the motor 4, and the front of the main body housing 2 (A right side in FIG. 1) and a spindle hammer, a striking mechanism 7, and a metal hammer case 5 serving as a front housing for housing the anvil 8.
- the striking mechanism 7 has a well-known structure in which the hammer 9 repeatedly engages and disengages with the anvil 8 as the load on the anvil 8 increases, thereby generating a striking (impact) in the rotating direction.
- the hammer case 5 is a cylindrical body whose rear portion is inserted into the main body housing 2 and screwed into the gear housing 10 therein, and the front portion exposed from the main body housing 2 has a tapered front taper shape.
- the cover 11 is covered with a synthetic resin cover 11 and a rubber bumper 12.
- the anvil 8 serving as an output shaft is pivotally supported by a shaft support portion 13 formed at the front end of the hammer case 5 and protrudes forward.
- a handle 14 with a battery pack (not shown) serving as a power source attached to the lower end is extended downward below the main body housing 2, and a switch 15 with a trigger 16 projecting forward is provided at the root of the handle 14. Is provided.
- An extension portion 17 that covers the lower portion of the hammer case 5 is formed between the trigger housing 16 below the hammer case 5 in the main body housing 2, and the front of the anvil 8 is irradiated in front of the extension portion 17.
- a light unit (LED and substrate) 18 is assembled.
- a mounting hole 19 such as a drill bit is formed at the front end of the anvil 8, and a chuck mechanism including a ball 20 and a sleeve 21 for retaining the drill bit inserted into the mounting hole 19 is provided. It has been.
- connection ring 22 is a ring shape that is a pair of clamp pieces 23, 23 that are separated from each other at a predetermined interval, and a butterfly bolt 24 that penetrates from the outside of one clamp piece 23 is attached to the other clamp piece 23. It is screwed into the fitted nut 25. Further, a protrusion 26 is provided in the circumferential direction on the inner periphery of the connection ring 22, and a concave groove 27 in which the protrusion 26 is fitted at the mounting position of the connection ring 22 is provided on the outer periphery of the shaft support portion 13. It is installed.
- connection ring 22 On the other hand, on the lower outer periphery of the connecting ring 22 located on the opposite side of the clamp piece 23, a protrusion 28 as a connecting portion in which a lateral through hole 29 is formed protrudes downward.
- Reference numeral 30 denotes a socket attached to the anvil 8, which includes a socket part 31 into which a bolt or a nut can be fitted, and a bit part 32 having the same form as a drill bit or the like.
- the attached ring-shaped connecting plate 33 is rotatably attached separately from the socket part 31.
- the connection is performed as described above.
- the connecting ring 22 is clamped to the shaft support 13 in a state in which the inner diameter of the ring 22 is reduced and the ring 22 is prevented from coming off by the fitting between the protrusion 26 and the groove 27.
- the bit portion 32 of the socket 30 into the mounting hole 19 of the anvil 8, it can be mounted with a chuck mechanism so as to be prevented from coming off as in a normal drill bit or the like.
- connection position of the carabiner 35 is to be changed, the clamp is released and the connection ring 22 can rotate around the shaft support portion 13 by loosening the butterfly bolt 24 and increasing the inner diameter of the connection ring 22 as described above. Therefore, after adjusting the projection 28 to a desired phase, the butterfly bolt 24 may be tightened again.
- the connecting ring 22 whose inner diameter is enlarged by loosening the butterfly bolt 24 may be removed from the shaft support portion 13.
- the impact driver 1A is detachably provided with the connecting ring 22 to which the carabiner 35 can be connected, so that the existing impact driver 1A interferes with the original function. Therefore, the function of preventing the socket 30 from falling off can be easily provided. Further, since the connecting ring 22 can be easily attached and detached, and does not protrude greatly from the impact driver 1A even after being attached, there is no possibility that the connecting ring 22 gets in the way or gets caught around. Become. Therefore, it is possible to maintain a good feeling of use and usability.
- the connecting member is the connecting ring 22 provided with the projections 28 for connecting the carabiner 35 on the outer periphery, the fitting operation to the impact driver 1A becomes easier due to the simple fitting to the shaft support portion 13. It becomes. Further, since the carabiner 35 is a hook member and the connection with the connection ring 22 is a through-locking of the carabiner 35, the reliability of drop-off prevention is increased.
- connection ring 22 is provided on the outer periphery of a cylindrical shaft support portion 13 that is formed at the front end of the hammer case 5 and supports the anvil 8, so that the connection with the carabiner 35 is easy and the impact driver 1A
- the connection ring 22 can be arranged at an optimal position that does not interfere with the function.
- the connecting ring 22 is provided so that the mounting position in the circumferential direction can be changed, the carabiner 35 can be connected at an appropriate position according to the form and work of the impact driver 1A, and the usability is better. Become.
- the shape of the connecting ring, the length of the protrusion, the size and direction of the through hole are not limited to the above contents, and the clamp piece can be shortened, the through hole can be enlarged,
- the direction of the holes can be changed as appropriate, for example, in the front-back direction.
- the ridge and the groove may be reversed, and the ridge may be provided on the shaft support portion and the groove may be provided on the connection ring.
- connection ring 36 which is a connection member, is a ring body that is connected to the entire circumference.
- a female screw part 37 is formed on the inner periphery and provided on the outer periphery of the shaft support part 13. It is detachably attached to the shaft support portion 13 by screwing with the male screw portion 38.
- the protrusions 28 and the through holes 29 have the same form.
- a plurality of teeth 39, 39,... Are continuously formed on the outer periphery of the connecting ring 36 in order to facilitate the fastening to the shaft support portion 13.
- connection ring 36 when the connecting ring 36 is screwed onto the shaft support portion 13 and tightened, the connection ring 36 is integrally coupled to the shaft support portion 13.
- the socket portion 31 is connected to the connecting ring 36 via the carabiner 35. Therefore, even if the bit portion 32 is broken during the bolt or nut tightening operation by the socket 30, the socket portion 31 is only suspended from the connection ring 36 via the carabiner 35, and the impact driver 1B. None fall.
- the connection ring 36 may be loosened and removed from the shaft support portion 13.
- the impact driver 1B is provided with the connecting ring 36 that can connect the carabiner 35 so as to be detachable, so that the existing impact driver 1B can be prevented from dropping the socket 30. It can be easily applied.
- the connecting ring 36 can be easily attached and detached and does not protrude greatly from the impact driver 1B even after being attached, there is no risk that the connecting ring 36 will get in the way or get caught around. Become. Therefore, it is possible to maintain a good feeling of use and usability.
- the coupling ring 36 that is screwed and attached, the effect of facilitating the attachment / detachment operation to the impact driver 1B, the effect of improving the reliability of drop-off prevention by locking the carabiner 35 through, and the coupling ring 36 are provided.
- the effect of the optimal arrangement due to the provision on the outer periphery of the shaft support portion 13 can also be obtained as in the first embodiment.
- the clamp piece and the butterfly bolt do not protrude from the coupling ring 36 as in the first embodiment, the second embodiment has an advantage that the fitting into the impact driver 1B in the mounted state is good and the compactness is more excellent. .
- the form of the connecting ring can be changed as appropriate.
- the outer periphery of the connecting ring can be knurled instead of teeth, the surface processing can be eliminated, or the outer shape of the connecting ring can be hexagonal. It can be a polygon such as.
- the length of the protrusions and the size and direction of the through holes may be changed.
- a connection ring 40 serving as a connection member is bayonet-coupled.
- a pair of protrusions 41 and 41 project from a point-symmetrical position on the inner peripheral surface of the connecting ring 40 that is a ring body having the entire circumference connected.
- a concave groove 42 is provided in the circumferential direction, and a pair of introduction grooves 43, 43 communicate with the concave groove 42 in a point-symmetric position at the front end of the shaft support portion 13. And is formed in the axial direction.
- the connecting ring 40 is externally mounted from the front end of the shaft support portion 13 by aligning the phases of the protrusions 41, 41 with the introduction grooves 43, 43, and after the protrusions 41, 41 reach the concave groove 42, Is rotated in the circumferential direction, the projections 41 and 41 are prevented from coming off by the concave groove 42 and the connecting ring 40 is mounted.
- the connecting ring 40 is mounted.
- the socket portion 31 is only hung from the connection ring 40 via the carabiner 35, and from the impact driver 1C. None fall.
- the connecting ring 40 can be removed forward by rotating the connecting ring 40 and matching the phases of the protrusions 41 and 41 with the introduction grooves 43 and 43.
- the impact driver 1C is detachably provided with the connecting ring 40 to which the carabiner 35 can be connected, so that the existing impact driver 1C has a function to prevent the socket 30 from falling off. It can be easily applied. Further, since the connecting ring 40 can be easily attached and detached and does not protrude greatly from the impact driver 1C even after being attached, there is no risk of the connecting ring 40 getting in the way or being caught around. Become. Therefore, it is possible to maintain a good feeling of use and usability.
- the adoption of the connecting ring 40 that is connected to the bayonet makes it easier to attach and detach the impact driver 1C, the effect of improving the reliability of preventing the dropout by locking the carabiner 35, and the connecting ring 40 as a shaft.
- the effect of the optimal arrangement due to the provision on the outer periphery of the support portion 13 can also be obtained as in the first embodiment.
- the third embodiment since the clamp piece and the butterfly bolt do not protrude from the connection ring 40 as in the first embodiment, the third embodiment also has an advantage that it can be easily fitted into the impact driver 1C in the mounted state and is more compact. .
- the recessed groove of the shaft support portion is not provided over the entire circumference, but is formed short for each introduction groove, and each L-shaped groove connected to the introduction groove, or the protrusion and the groove
- the projections can be provided on the outer peripheral surface of the shaft support portion and the grooves can be provided on the inner peripheral surface of the coupling ring.
- a rubber protector 44 is detachably mounted over the entire hammer case 5 and the main body housing 2 from the rear of the bumper 12.
- the protector 44 covers the hammer case 5 and the like so as to prevent damage to the workpiece when the impact driver 1D comes into contact with the workpiece or the like, and directly grips the hammer case 5 and the like whose temperature has increased due to use.
- a protrusion 45 having a through hole 46 is integrally provided at the front end of the upper surface of the protector 44. That is, the existing protector 44 is also used as a connecting member.
- the protector 44 to which the carabiner 35 can be connected is detachably provided on the impact driver 1D, so that the existing impact driver 1D can be easily provided with the function of preventing the socket 30 from falling off. Can be granted. Further, the attachment / detachment operation of the protector 44 is easy, and the protector 44 does not protrude greatly from the impact driver 1D even after being attached, so that the compactness is not impaired, and the possibility that the protector 44 gets in the way or gets caught around is reduced. Accordingly, it is possible to maintain a good feeling and usability.
- the existing protector 44 is also used as a connecting member, which is a rational configuration, which is advantageous in terms of cost compared to the case where a new connecting member is employed.
- the position of the protrusion is not limited to the front end of the upper surface, but may be provided on the side surface or the lower surface depending on the shape of the housing or the protector. Further, the directions of the protrusions and the through holes can be appropriately changed.
- a screw member in addition to the clamp, screwing, and bayonet connection as in the above embodiment, for example, a screw member is attached to a connecting member having a through hole to which the connecting body is connected.
- the screw portion can be attached and detached by screwing the screw portion into a screw hole formed in the housing.
- a connecting band 47 as a connecting member is connected to the outer periphery of the shaft support portion 13 with the bumper 12 removed.
- the connecting band 47 is made of a synthetic resin and is an inverted U-shaped band which is locked from above on a locking groove 13a for locking the bumper 12 provided on the outer periphery of the shaft support portion 13 and both ends hang downward. It comprises a body 48 and a hollow connecting rod 49 laid between the lower ends of the band body 48 by bolts 50 and nuts 51 in the left-right direction.
- the existing impact driver 1E has a function of preventing the socket 30 from dropping off. It can be easily applied.
- the connecting band 47 can be easily attached and detached and does not protrude greatly from the upper side or both the left and right sides of the impact driver 1E even after being attached, the compacting is not impaired, and the connecting band 47 gets in the way or gets caught around. The risk of getting lost is also reduced. Therefore, it is possible to maintain a good feeling of use and usability.
- a connecting rod may be connected with a band body by joining means, such as a rivet and welding other than a volt
- the connection of the connection band to the impact driver is not limited to the structure using the locking groove, and can be changed as appropriate, for example, the band body is externally attached to the outer periphery of the cover or bumper without removing the bumper. is there.
- a cylindrical boss portion 52 is integrally formed at a lower portion of the shaft support portion 13 in the hammer case 5, and a connecting pin 53 is provided on the boss portion 52. .
- the connecting pin 53 is formed with a lateral through hole 54 at the front end and a large-diameter retaining portion 55 at the rear end.
- the connecting pin 53 passes through the boss portion 52 from the inside of the hammer case 5 and is removed.
- the through hole 54 is assembled in a state of protruding to the front of the boss portion 52.
- the through hole 54 is located below the axis of the anvil 8 and ahead of the striking mechanism 7.
- connection pin 53 having the through hole 54 for connecting the carabiner 35 is integrally provided on the impact driver 1F, so that a connecting member such as a belt-like body is provided. Therefore, the socket 30 can be easily prevented from falling off without interfering with the function of the impact driver 1F.
- the connecting pin 53 does not protrude greatly from the impact driver 1F, compactness is not impaired, and the connecting pin 53 is less likely to get in the way or get caught around, so that a good feeling of use and usability can be maintained. .
- the connecting portion to which the carabiner 35 is locked is the through-hole 54
- the carabiner 35 is difficult to come off, and the reliability for preventing the drop-off is increased.
- the degree of freedom of the material and form of the connecting pin 53 is increased, and the optimal connecting pin 53 for the impact driver 1F can be selected.
- the through hole 54 of the connecting pin 53 is disposed forward of the impact mechanism 7 below the axis of the anvil 8, the through hole 54 can be disposed at an optimal position that does not affect the function of the impact driver 1F. Become.
- the length of the connecting pin, the size and direction of the through hole, the assembly structure to the impact driver, etc. are not limited to the above form 6, and the through hole part is enlarged or the through hole is oriented. Can be changed as appropriate, for example, by vertically or diagonally, screwing a connecting pin into a female thread provided in the hammer case, or press-fitting a connecting pin into a bottomed hole provided in the hammer case.
- the position of the connecting pin is preferably a position below the axis of the anvil and in front of the striking mechanism as described above, but it is possible to deviate from this and provide it above the anvil.
- a connecting block 56 is assembled to the extending portion 17 instead of the light unit.
- the connecting block 56 includes a block main body 57 held at the front end of the extending portion 17 and a protrusion 58 protruding from the front end of the block main body 57.
- the portion 58 protrudes obliquely forward from the extending portion 17.
- a through hole 59 is formed laterally at the front end of the projection 58. Therefore, also in the present embodiment 7, when the carabiner 35 is locked across the ring 34 of the socket 30 and the through hole 59 of the protrusion 58, the socket 31 is connected to the protrusion 58 via the carabiner 35. Even when the bit portion 32 is broken during the tightening operation of the bolt or nut, the socket portion 31 does not fall from the impact driver 1G.
- connection block 56 provided with the through hole 59 for connecting the carabiner 35 is integrally provided in the impact driver 1G.
- the trouble of attaching and detaching the members is unnecessary, and the socket 30 can be easily prevented from falling off.
- the compactness is not impaired, and the projections 58 are less likely to get in the way or get caught around, so that a good feeling of use and usability can be maintained.
- the reliability of drop-off prevention is improved by making the connecting portion the through-hole 59, the optimum form is selected by assembling the separate connecting block 56, and the through-hole 59 is hit below the axis of the anvil 8
- the effect of the optimal arrangement due to the arrangement in front of the mechanism 7 can be obtained as in the sixth embodiment.
- a connecting projection 60 having a lateral through hole 61 is integrally formed upward on the upper surface of the hammer case 5 at the rear of the shaft support portion 13, and the cover 11 is connected to the cover 11.
- a protrusion 62 that covers the protrusion 60 is formed.
- the connection protrusion 60 can be exposed by removing the cover 11. Therefore, if the carabiner 35 is locked between the through hole 61 and the ring 34 of the socket 30, the socket 30 and the connection projection 60 are connected, and the bolt or nut is tightened. Even if the bit part 32 is broken, the socket part 31 is not dropped from the impact driver 1H.
- connection protrusion 60 provided with the through hole 61 for connecting the carabiner 35 is integrally provided on the impact driver 1H, so The trouble of attaching and detaching the members is unnecessary, and the socket 30 can be easily prevented from falling off. In addition, the compactness is not lost, and the connection protrusion 60 is less likely to get in the way or get caught in the surroundings, so that a good feeling of use and usability can be maintained. Further, the effect of improving the reliability of the drop-off prevention due to the connecting portion being the through hole 61 can be obtained as in the sixth embodiment.
- the connecting protrusion is provided on the side surface of the hammer case or the shaft support, or below the axis of the anvil as in the above-described forms 6 and 7. Can be provided in front of the striking mechanism. Further, a through hole may be formed in the cover in place of the projecting portion so that the connecting projection is exposed without removing the cover.
- the screw boss 63 for connecting the carabiner 35 is integrally provided to the impact driver 1I, so that the trouble of attaching and detaching the connecting member is not required as in the sixth embodiment.
- the connecting portion is a shaft (screw boss 63) on which the carabiner 35 is locked, the reliability when the carabiner 35 is locked is increased.
- the screw boss 63 is used, a highly rigid shaft can be obtained by the screw 64 passing therethrough.
- the position of the screw boss is not limited to the extended portion, and if the screw boss is on the upper side depending on the form of the housing, the upper screw boss can be used as the connecting portion.
- a pin 66 serving as a connecting portion is installed at the front end of the extending portion 17 in which the notch 65 is formed, and an intermediate portion thereof is extended over the entire circumference. Exposed. Also in this case, the carabiner 35 can be directly locked to the pin 66. Accordingly, when the carabiner 35 is locked across the ring 34 and the pin 66 of the socket 30, the socket portion 31 is connected to the pin 66 via the carabiner 35, so that bolts and nuts are tightened. Even if the bit portion 32 is broken, the socket portion 31 does not fall from the impact driver 1J.
- the pin 66 for connecting the carabiner 35 is integrally provided to the impact driver 1J, so that the trouble of attaching and detaching the connecting member is unnecessary as in the sixth embodiment.
- the socket 30 it is possible to easily prevent the socket 30 from falling off.
- the pin 66 is less likely to get in the way or get caught around, so that a good feeling of use and usability can be maintained.
- the connecting portion is a shaft (pin 66) on which the carabiner 35 is locked, the reliability when the carabiner 35 is locked is increased.
- the position of the pin is reasonable if the extending portion is used.
- the present invention is not limited to this, and a new groove is formed on the side or upper surface of the housing, and the pin is installed between the inner surfaces of the groove.
- protrusions may be formed and pins may be installed between the protrusions.
- a connecting plate 67 is provided between the hammer case 5 on the right side surface and the main body housing 2 covering the rear part thereof.
- the connecting plate 67 has a rear end provided with a locking hole 68 inserted between the hammer case 5 having a chamfered side surface and the main body housing 2, and a projection 69 provided on the inner surface of the front end of the main body housing 2.
- the front end of the connecting plate 67 is provided with a through hole 70 serving as a connecting portion, and protrudes forward through a through hole 71 provided in the cover 11.
- the socket portion 31 is connected to the connecting plate 67 via the carabiner 35. Even when the bit portion 32 is broken during the attaching operation, the socket portion 31 is not dropped from the impact driver 1K.
- connection plate 67 provided with the through hole 70 for connecting the carabiner 35 is integrally provided in the impact driver 1K, so The trouble of attaching and detaching the members is unnecessary, and the socket 30 can be easily prevented from falling off. In addition, there is no loss of compactness, and there is little risk that the connecting plate 67 will get in the way or get caught around, so that a good feeling of use and usability can be maintained. Furthermore, the effect of improving the reliability of drop-off prevention due to the connection portion being the through hole 70 can be obtained as in the sixth embodiment.
- the connecting plate 67 is assembled separately from the impact driver 1K, the degree of freedom of the material of the connecting plate 67, the form of the through hole 70, etc. is increased, and the optimal connecting portion for the impact driver 1K can be selected. .
- the length of the connecting plate, the size of the through hole, etc. can be appropriately changed, and the connecting plate can be provided on the lower surface side or the upper surface side of the housing as well as the opposite side surface. it can. It is also possible to provide the housing so that it can be taken in and out.
- the impact driver 1L shown in FIGS. 33 and 34 is formed by integrally forming a connection protrusion 72 having a through hole 73 serving as a connection portion at the front end of the upper surface of the cover 11. Therefore, when the carabiner 35 is locked across the ring 34 of the socket 30 and the through-hole 73 of the connecting protrusion 72, the socket portion 31 is connected to the connecting protrusion 72 via the carabiner 35. Even when the bit portion 32 is broken during the attaching operation, the socket portion 31 is not dropped from the impact driver 1L.
- connection protrusion 72 including the through hole 73 for connecting the carabiner 35 is integrally provided on the impact driver 1L.
- the trouble of attaching and detaching the members is unnecessary, and the socket 30 can be easily prevented from falling off.
- the compactness is not impaired, and the connection protrusion 72 is less likely to get in the way or get caught in the surroundings, and a good feeling of use and usability can be maintained. Further, the effect of improving the reliability of the drop-off prevention due to the connection portion being the through-hole 73 is also obtained as in the sixth embodiment.
- the shape of the connecting projection and the size and direction of the through hole can be changed as appropriate, and the arrangement position is also provided on the side surface and the lower surface side of the cover, or is integrated with the shaft support portion and the extension portion other than the cover. It can be formed.
- the shaft support portion 13 of the hammer case 5 is formed to be long forward, a connecting ring 74 is externally mounted on the outer periphery of the shaft support portion 13 in front of the bumper 12, and the front end of the shaft support portion 13 is provided.
- the connecting ring 74 is prevented from coming off by a retaining ring 75 that is locked to.
- a protrusion 76 having a through hole 77 serving as a connecting portion is provided so as to protrude downward.
- the socket portion 31 is connected to the connection ring 74 via the carabiner 35, so that the bolts and nuts can be tightened. Even when the bit portion 32 is broken during the work, the socket portion 31 does not fall from the impact driver 1M.
- connection ring 74 provided with the through hole 77 for connecting the carabiner 35 is integrally provided in the impact driver 1M.
- the trouble of attaching and detaching the members is unnecessary, and the socket 30 can be easily prevented from falling off.
- there is no loss of compactness and the connection ring 74 is less likely to get in the way or get caught around, so that a good feeling of use and usability can be maintained.
- the effect of improving the reliability of dropping prevention by using the connecting portion as the through-hole 77 and increasing the degree of freedom of the form by using the connecting ring 74 as a separate body can be obtained as in the previous embodiment.
- the form of the protrusion and the size and direction of the through hole can be changed as appropriate, and the protrusion may be assembled sideways or upward instead of downward.
- the outer cylinder 79 of the LED 78 provided in the light unit 18 is formed long forward and protrudes forward from the light unit 18, and on the left and right side surfaces of the outer cylinder 79, The both ends of the U-shaped connecting ring 80 are connected.
- the connection ring 80 is fixed in a forward and downward inclined posture so as not to block light irradiated from the outer cylinder 79 upward in the forward direction. Therefore, when the carabiner 35 is locked across the ring 34 and the connecting ring 80 of the socket 30, the socket portion 31 is connected to the connecting ring 80 via the carabiner 35, so that bolts and nuts are tightened. Even if the bit portion 32 is broken during the operation, the socket portion 31 does not fall from the impact driver 1N.
- the connecting ring 80 for connecting the carabiner 35 is integrally provided to the impact driver 1N, so that the trouble of attaching and detaching the connecting member is reduced similarly to the form 6. It becomes unnecessary and can easily prevent the socket 30 from falling off. In addition, the compactness is not impaired, and the connection ring 80 is less likely to get in the way or get caught around, so that a good feeling of use and usability can be maintained.
- the size and orientation of the connecting ring can be changed as appropriate, and the connecting ring may be fixed downward rather than in an inclined posture, or may be provided so as to be swingable back and forth without being fixed.
- the connecting part is screwed into the female thread part, for example, as a female screw part formed in the housing.
- the female thread part for example, as a female screw part formed in the housing.
- the connecting body can be attached to and detached from both the socket side and the power tool side as in the case of a single carabiner, or can be connected to the socket side.
- FIG. 40 shows an example applied to the impact driver 1 ⁇ / b> F of the sixth embodiment, and here, the base end of the eggplant 81 as a connecting body is connected to the ring 34 of the socket 30 and integrated with the socket 30. Therefore, when the socket 30 is not used, the socket 30 can be hung on a locking body 82 such as a belt or a hook by using the eggplant 81 as shown in FIG.
- connection body is not limited to an eggplant, and other hook members such as a snap hook and a key holder ring can be used, and a string-like body such as a chain or a wire can be used for connection to a socket. .
- connection body may be in contact with the output shaft of the socket or power tool. There is a risk that the body may move around and be detached from the socket or damaged.
- a restricting means for preventing the coupling body from coming into contact with the socket or the output shaft.
- this restricting means for example, as shown in FIG. 42 applied to the impact driver 1A of the form 1, the ring 34 and the carabiner 35 are protruded between the socket 30 and the carabiner 35 on the non-rotating connection plate 33 and the socket 30 is attached. It is conceivable to integrally provide a restriction plate 83 that prevents movement to the side.
- a part of the connecting plate 33 is formed to project in the radial direction, and the carabiner 35 is connected to the tip of the projecting portion 84, thereby ensuring a large distance between the connecting body and the socket. Is also possible.
- the socket is described as having a bit part integrally provided, but the present invention can be similarly applied to a type in which a separate bit can be attached to and detached from the socket part.
- the striking mechanism may be a type using an oil unit without using a hammer or the like, and the power tool is not limited to an impact driver, but may be another model such as an angle impact driver.
- the present invention can be applied even to an AC tool.
- Extension part 18 Light unit 22 36 36 74 74 Connection ring 23 Clamp piece 24..Butterfly bolt, 26..Projection, 27,42..Ditch, 28,45..Protrusion, 29,46..Protrusion, 30..Socket, 31..Socket part, 32..Bit part 34, Ring, 35, Carabiner, 37, Female thread, 38, Male thread, 44, Protector, 47, Connection band, 53, Connection pin, 54, 59, 61, 70, 73, 77 .. Through hole, 56 .. Connection blow Click, 60, 72 ... connecting projection, 63 ... screw bosses, 66 ... pin 67 ... coupling plate.
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- Portable Power Tools In General (AREA)
Abstract
Description
請求項2に記載の発明は、請求項1の構成において、連結部材を、外周に連結体の連結部を備えたリング状としたことを特徴とするものである。
請求項3に記載の発明は、請求項1又は2の構成において、連結体を、少なくとも端部にフック部材を含むものとして、連結部材との連結をフック部材の貫通係止としたことを特徴とするものである。
請求項4に記載の発明は、請求項1又は2の構成において、連結部材を、ハウジングの前端に形成されて出力軸を軸支する筒状の軸支部の外周に設けたことを特徴とするものである。
請求項5に記載の発明は、請求項2の構成において、連結部材を、周方向への取付位置を変更可能に設けたことを特徴とするものである。
請求項6に記載の発明は、請求項2の構成において、連結部材を、一部が切り離されて両端が所定の間隔を有する一対のクランプ片となる連結リングとし、一方のクランプ片に貫通させた蝶ボルトを、他方のクランプ片に嵌合させたナットに螺合させて、蝶ボルトの回転操作によって連結リングの着脱を可能としたことを特徴とするものである。
請求項7に記載の発明は、請求項6の構成において、連結リングの内周に、突条を周方向に形成し、電動工具における連結リングの装着位置に、突条が嵌合する凹溝を形成したことを特徴とするものである。
請求項8に記載の発明は、請求項2の構成において、連結部を、透孔を形成した突起としたことを特徴とするものである。
請求項9に記載の発明は、請求項2の構成において、連結部材を、内周に雌ネジ部を形成し、電動工具に設けた雄ネジ部との螺合によって装着される連結リングとしたことを特徴とするものである。
請求項10に記載の発明は、請求項9の構成において、連結リングの外周に、複数の歯を連続状に形成したことを特徴とするものである。
請求項11に記載の発明は、請求項2の構成において、連結部材の内周面と電動工具の外周面との何れか一方に突起を設け、他方に、連結部材の装着動作に伴って突起が進入する導入溝と、その導入溝と連通する周方向の凹溝とを設けて、バヨネット結合によって連結部材を電動工具に着脱可能としたことを特徴とするものである。
請求項12に記載の発明は、請求項1の構成において、電動工具にプロテクタを着脱可能に装着してプロテクタに連結体の連結部を設けて、プロテクタを連結部材と兼用したことを特徴とするものである。
請求項2に記載の発明によれば、請求項1の効果に加えて、連結部材をリング状としたことで電動工具への着脱操作がより容易となる。
請求項3に記載の発明によれば、請求項1又は2の効果に加えて、フック部材の貫通係止としたことで脱落防止の信頼性が高まる。
請求項4に記載の発明によれば、請求項1又は2の効果に加えて、連結体との連結が容易で、且つ電動工具の機能に干渉しない最適な位置に連結部材を配置することができる。
請求項5に記載の発明によれば、請求項2の効果に加えて、電動工具の形態や作業に応じた適切な位置で連結体の連結が可能となり、使い勝手がより良好となる。
[形態1]
図1~4に、ソケットの脱落防止構造の一例を示す。1Aは、電動工具としてのインパクトドライバで、インパクトドライバ1Aは、左右の半割ハウジング3,3を組み付けて形成され、モータ4を収容する合成樹脂製の本体ハウジング2と、その本体ハウジング2の前方(図1の右側)に組み付けられ、スピンドル6、打撃機構7、アンビル8を収容する前側のハウジングとなる金属製のハンマーケース5とを備えてなる。この打撃機構7は、アンビル8への負荷の増加に伴ってハンマー9がアンビル8への係脱を繰り返して回転方向に打撃(インパクト)を発生させる周知の構造である。
一方、アンビル8の前端には、ドリルビット等の装着孔19が形成されると共に、装着孔19に挿入されたドリルビット等を抜け止め装着するボール20及びスリーブ21等を備えたチャック機構が設けられている。
一方、クランプ片23の反対側に位置する連結リング22の下部外周には、横向きの透孔29を形成した連結部としての突起28が下向きに突設されている。
30は、アンビル8に装着されるソケットで、ボルトやナットが嵌合可能なソケット部31と、ドリルビット等と同じ形態のビット部32とからなり、ソケット部31の後部には、リング34を装着したリング状の連結プレート33がソケット部31と別体で回転可能に装着されている。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介して連結リング22からぶら下がるにとどまり、インパクトドライバ1Aから落下することがない。
また、連結体をフック部材であるカラビナ35として、連結リング22との連結をカラビナ35の貫通係止としているので、脱落防止の信頼性が高まる。
さらに、連結リング22を、ハンマーケース5の前端に形成されてアンビル8を軸支する筒状の軸支部13の外周に設けたことで、カラビナ35との連結が容易で、且つインパクトドライバ1Aの機能に干渉しない最適な位置に連結リング22を配置することができる。
加えて、連結リング22を、周方向への取付位置を変更可能に設けているので、インパクトドライバ1Aの形態や作業に応じた適切な位置でカラビナ35の連結が可能となり、使い勝手がより良好となる。
[形態2]
図5~7に示すインパクトドライバ1Bにおいては、連結部材である連結リング36は全周が繋がったリング体で、ここでは内周に雌ネジ部37を形成して、軸支部13の外周に設けた雄ネジ部38との螺合によって軸支部13へ着脱可能に装着される。突起28及び透孔29の形態は同じである。また、連結リング36の外周には、軸支部13への締め外しを容易とするために複数の歯39,39・・が連続状に形成されている。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介して連結リング36からぶら下がるにとどまり、インパクトドライバ1Bから落下することがない。
なお、ソケット30を用いない場合は、連結リング36の締め付けを緩めて軸支部13から取り外せばよい。
加えて、この形態2においては、形態1のように連結リング36からクランプ片や蝶ボルトが突出しないので、装着状態でのインパクトドライバ1Bへの収まりがよく、よりコンパクト化に優れるという利点がある。
図8~11に示すインパクトドライバ1Cにおいては、連結部材となる連結リング40をバヨネット結合したものである。
まず、全周が繋がったリング体である連結リング40の内周面で点対称位置には、一対の突起41,41が突設されている。一方、軸支部13の外周面には、周方向に凹溝42が周設されると共に、その凹溝42と連通して点対称位置に、一対の導入溝43,43が軸支部13の前端に掛けて軸方向に形成されている。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介して連結リング40からぶら下がるにとどまり、インパクトドライバ1Cから落下することがない。
なお、ソケット30を用いない場合は、連結リング40を回転させて突起41,41の位相を導入溝43,43に合わせれば、連結リング40を前方へ抜き外すことができる。
加えて、この形態3においても、形態1のように連結リング40からクランプ片や蝶ボルトが突出しないので、装着状態でのインパクトドライバ1Cへの収まりがよく、よりコンパクト化に優れるという利点がある。
図12に示すインパクトドライバ1Dにおいては、カバーに代えて、バンパ12の後方からハンマーケース5及び本体ハウジング2の略全体に亘ってゴム製のプロテクタ44が着脱可能に装着されている。このプロテクタ44は、ハンマーケース5等を覆うことで、インパクトドライバ1Dが被加工材等に当接した場合の被加工材等の損傷防止や、使用によって温度上昇したハンマーケース5等を直接把持することによる作業者の不快感の防止等を目的としたものであるが、ここではプロテクタ44における上面前端に、透孔46を形成した突起45を一体に突設している。すなわち、既存のプロテクタ44を連結部材として兼用したものである。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介してプロテクタ44からぶら下がるにとどまり、インパクトドライバ1Dから落下することがない。
特にここでは、既存のプロテクタ44を連結部材と兼用した合理的な構成となるため、新たな連結部材を採用する場合に比べてコスト面で有利となる。
図13,14に示すインパクトドライバ1Eにおいては、バンパ12を取り外した状態の軸支部13の外周に連結部材としての連結バンド47が連結されている。この連結バンド47は、軸支部13の外周に周設されたバンパ12の係止用の係止溝13aに上側から係止し、両端が下方へ垂下する合成樹脂製で逆U字状のバンド体48と、そのバンド体48の下端間にボルト50及びナット51によって左右方向に架設される中空の連結棒49とからなる。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介して連結バンド47からぶら下がるにとどまり、インパクトドライバ1Eから落下することがない。
図15~17に示すインパクトドライバ1Fにおいて、ハンマーケース5における軸支部13の下方部位には、円柱状のボス部52が一体に形成されて、そのボス部52に連結ピン53が設けられている。この連結ピン53は、先端に横向きの透孔54を、後端に大径の抜け止め部55をそれぞれ形成してなり、ハンマーケース5の内側からボス部52に連結ピン53を貫通させて抜け止め部55をボス部52内に圧入することで、透孔54がボス部52の前方へ突出した状態で組み付けられる。この透孔54は、アンビル8の軸心よりも下方であって、且つ打撃機構7よりも前方に位置している。
従って、ソケット30によるボルトやナットの締付作業を行っている際にビット部32が折れることがあっても、ソケット部31はカラビナ35を介して連結ピン53からぶら下がるにとどまり、インパクトドライバ1Fから落下することがない。
また、透孔54を備えた別体の連結ピン53をインパクトドライバ1Fに組み付けたことで、連結ピン53の材質や形態等の自由度が高まり、インパクトドライバ1Fに最適な連結ピン53が選択できる。
さらに、連結ピン53の透孔54を、アンビル8の軸心以下で打撃機構7より前方に配置しているので、インパクトドライバ1Fの機能に影響のない最適な位置に透孔54が配置可能となる。
また、連結ピンの位置も、前述のようにアンビルの軸心以下で打撃機構より前方となる位置が望ましいが、これを逸脱してアンビルより上方に設けたりすることは可能である。
図18~20に示すインパクトドライバ1Gにおいては、延設部17に、ライトユニットに代えて連結ブロック56を組み付けている。この連結ブロック56は、延設部17の前端に保持されるブロック本体57と、そのブロック本体57の前端に突設される突起部58とからなり、延設部17への組み付け状態で、突起部58が延設部17から斜め前方へ突出している。この突起部58の前端に透孔59が横向きに形成されている。
従って、本形態7においても、ソケット30のリング34と突起部58の透孔59とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介して突起部58に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Gから落下することがない。
なお、この形態7においても、連結ブロックの形態は適宜変更可能で、突起部の長さや透孔の大きさ及び向きを変えたりして差し支えない。
図21~23に示すインパクトドライバ1Hにおいては、ハンマーケース5の上面における軸支部13の後方に、横向きの透孔61を形成した連結突起60が上向きに一体形成されて、カバー11には、連結突起60を覆う突出部62が形成されている。ここではバンパ12を前方へ取り外すことでカバー11も前方へ取り外すことができるため、ソケット30を使用する際には、カバー11を取り外せば、連結突起60を露出させることができる。従って、透孔61とソケット30のリング34との間に跨ってカラビナ35を係止させれば、ソケット30と連結突起60とが連結され、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Hから落下することがない。
図24~26に示すインパクトドライバ1Iにおいては、延設部17にライトユニットを設けず、延設部17を形成する左右の半割ハウジング3,3同士をネジ64によって組み付けるネジボス63を前端部分まで移動させると共に、延設部17の前面から下面に掛けて切欠き65を設けることで、ネジボス63の中間部を全周に亘って露出させている。すなわち、軸状のネジボス63を連結部として利用するものである。
従って、ソケット30のリング34とネジボス63とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介してネジボス63に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Iから落下することがない。
さらに、連結部をカラビナ35が係止する軸(ネジボス63)としているので、カラビナ35を係止した際の信頼性が高くなる。特に、ネジボス63の利用であるため、貫通するネジ64によって剛性の高い軸が得られる。
図27~29に示すインパクトドライバ1Jにおいては、ネジボスの利用ではなく、切欠き65を形成した延設部17の前端に連結部となるピン66を架設させてその中間部を全周に亘って露出させたものである。この場合もピン66にカラビナ35を直接係止できる。
従って、ソケット30のリング34とピン66とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介してピン66に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Jから落下することがない。
さらに、連結部をカラビナ35が係止する軸(ピン66)としているので、カラビナ35を係止した際の信頼性が高くなる。
図30~32に示すインパクトドライバ1Kにおいては、右側面におけるハンマーケース5とその後部を覆う本体ハウジング2との間に連結板67を設けている。この連結板67は、係止孔68を備えた後端を、側面に面取りを形成したハンマーケース5と本体ハウジング2との間に差し込んで、本体ハウジング2の前端内面に設けた突起69を係止孔68に係止させることで、ハンマーケース5と本体ハウジング2との間に挟持される。連結板67の前端は、連結部となる透孔70を備えて、カバー11に設けた貫通孔71を貫通して前方に突設している。
従って、ソケット30のリング34と連結板67の透孔70とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介して連結板67に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Kから落下することがない。
特にここでは、連結板67をインパクトドライバ1Kと別体にして組み付けているので、連結板67の材質や透孔70の形態等の自由度が高まり、インパクトドライバ1Kに最適な連結部が選択できる。
図33,34に示すインパクトドライバ1Lは、カバー11の上面前端に、連結部となる透孔73を有する連結突起72を一体形成したものである。
従って、ソケット30のリング34と連結突起72の透孔73とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介して連結突起72に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Lから落下することがない。
図35~37に示すインパクトドライバ1Mにおいては、ハンマーケース5の軸支部13を前方へ長く形成して、バンパ12の前方で軸支部13の外周に連結リング74を外装し、軸支部13の前端に係止した止め輪75によって連結リング74を抜け止めしたものである。この連結リング74の下端外面に、連結部となる透孔77を形成した突起76が下向きに突設されている。
従って、ソケット30のリング34と突起76の透孔77とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介して連結リング74に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Mから落下することがない。
図38,39に示すインパクトドライバ1Nにおいては、ライトユニット18に設けられるLED78の外筒79を前方へ長く形成してライトユニット18から前方へ突出させて、その外筒79の左右の側面に、U字状の連結リング80の両端を連結したものである。なお、連結リング80は、外筒79から前方上向きに照射される光を遮らないように、前下がりの傾斜姿勢で固定されている。
従って、ソケット30のリング34と連結リング80とに跨ってカラビナ35を係止させると、ソケット部31はカラビナ35を介して連結リング80に連結されるため、ボルトやナットの締付作業を行っている際にビット部32が折れることがあってもソケット部31がインパクトドライバ1Nから落下することがない。
その他、打撃機構はハンマー等を用いずオイルユニットを用いたタイプであってもよいし、電動工具もインパクトドライバに限らず、アングルインパクトドライバ等の他の機種であってもよい。勿論AC工具であっても本発明の適用は可能である。
Claims (12)
- 電動工具におけるソケットの脱落防止構造であって、
ハウジングの前方に出力軸を突設した電動工具と、
前記出力軸へ着脱可能に装着されるソケットと、
前記電動工具とソケットとを互いに連結して前記ソケットの脱落を防止する連結体と、を含み、
前記電動工具に、前記連結体を連結可能な連結部材を着脱可能に設けた
ことを特徴とする電動工具におけるソケットの脱落防止構造。 - 前記連結部材を、外周に前記連結体の連結部を備えたリング状としたことを特徴とする請求項1に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結体を、少なくとも端部にフック部材を含むものとして、前記連結部材との連結を前記フック部材の貫通係止としたことを特徴とする請求項1又は2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部材を、前記ハウジングの前端に形成されて前記出力軸を軸支する筒状の軸支部の外周に設けたことを特徴とする請求項1又は2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部材を、周方向への取付位置を変更可能に設けたことを特徴とする請求項2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部材を、一部が切り離されて両端が所定の間隔を有する一対のクランプ片となる連結リングとし、一方のクランプ片に貫通させた蝶ボルトを、他方のクランプ片に嵌合させたナットに螺合させて、前記蝶ボルトの回転操作によって前記連結リングの着脱を可能としたことを特徴とする請求項2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結リングの内周に、突条を周方向に形成し、前記電動工具における前記連結リングの装着位置に、前記突条が嵌合する凹溝を形成したことを特徴とする請求項6に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部を、透孔を形成した突起としたことを特徴とする請求項2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部材を、内周に雌ネジ部を形成し、前記電動工具に設けた雄ネジ部との螺合によって装着される連結リングとしたことを特徴とする請求項2に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結リングの外周に、複数の歯を連続状に形成したことを特徴とする請求項9に記載の電動工具におけるソケットの脱落防止構造。
- 前記連結部材の内周面と電動工具の外周面との何れか一方に突起を設け、他方に、前記連結部材の装着動作に伴って前記突起が進入する導入溝と、その導入溝と連通する周方向の凹溝とを設けて、バヨネット結合によって前記連結部材を前記電動工具に着脱可能としたことを特徴とする請求項2に記載の電動工具におけるソケットの脱落防止構造。
- 前記電動工具にプロテクタを着脱可能に装着して前記プロテクタに前記連結体の連結部を設けて、前記プロテクタを前記連結部材と兼用したことを特徴とする請求項1に記載の電動工具におけるソケットの脱落防止構造。
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JP2012504369A JP5655057B2 (ja) | 2010-03-10 | 2011-02-10 | インパクト工具及びインパクト工具用ソケット |
US13/574,947 US20120292865A1 (en) | 2010-03-10 | 2011-02-10 | Falling prevention structure for socket of power tool |
EP11753127.7A EP2517833B1 (en) | 2010-03-10 | 2011-02-10 | Structure for prevention of falling-off of socket in motorized tool |
CN2011800127149A CN102791431A (zh) | 2010-03-10 | 2011-02-10 | 电动工具的套筒起子头的防脱构造 |
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EP (1) | EP2517833B1 (ja) |
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Also Published As
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JPWO2011111465A1 (ja) | 2013-06-27 |
JP5655057B2 (ja) | 2015-01-14 |
EP2517833A4 (en) | 2015-09-23 |
EP2517833B1 (en) | 2017-04-05 |
CN102791431A (zh) | 2012-11-21 |
EP2517833A1 (en) | 2012-10-31 |
US20120292865A1 (en) | 2012-11-22 |
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