CN206501082U - Assist handle and impact tool - Google Patents

Abstract

The utility model provides assist handle and impact tool.Assist handle can be dismounted relative to the impact tool for implementing stroke to machined material, contributed to the vibration isolation of assist handle and ensured usability.Possess handle main body (30), handle portion (33) and o-ring (37) as the side handle (3) of assist handle.Handle main body includes：It is configured to the core (32) for the lengthwise shape that the installation portion (31) that is dismounted relative to hammer drill and upper end (321) are connected with installation portion and extended to the direction for leaving installation portion.The handle portion of the tubular of lengthwise is configured at the surrounding of core.O-ring is configured with the state between core and handle portion.Handle portion can be in the bottom (322) of core, centered on the rotary shaft (A4) extended along the direction orthogonal with impact axle (A1) direction of hammer drill and axis (A3) direction difference of core, link in relative rotation with core relative to core on impact axle (A1) direction.

Description

Assist handle and impact tool

Technical field

The utility model is related to assist handle and possesses the impact tool of assist handle, and assist handle can be with respect to Dismounted along defined impact direction of principal axis driving tip end tool to implement the impact tool of stroke to machined material.

Background technology

It is known to have the assist handle for being configured to dismount relative to hand-held working tool.Generally, used in power tool On assist handle, the vibration isolation construction that the vibration for suppressing power tool is transmitted to user is provided with.For example, patent document 1 Following assist handle is disclosed, it possesses：The handle main body portion of tool body is installed on stationary state and had in outer surface It is made for the handle portion of the grasping region of dealer's holding.Handle portion the middle section of grasping region or than middle section away from work Have the end side of main body, handle main body portion is installed on across elastic caoutchouc.

Patent document 1:Japanese Unexamined Patent Publication 2010-184338 publications

In above-mentioned assist handle, handle portion can be in mutually orthogonal three direction including handle long axis direction On the circumferential whole direction around handle major axis, relative to handle main body portion, pass through total four spherical elastic caoutchoucs Deformation is relatively moved.Thereby, it is possible to reduce the vibration transmitted to handle portion.However, above-mentioned assist handle is being used for picture The vibration of the processing operation implemented by impact tool like that, on main shaft (impact axle) direction is maximum and is reigning processing In the case of operation, it is possible on direction beyond impact direction of principal axis, not so needing vibration reduction countermeasure, handle portion Relative position relation with handle main body portion is unstable, usability reduction.Therefore, it is desirable to have from vibration isolation and ensure usability two The impact tool assist handle that viewpoint is set out optimised.

Utility model content

The purpose of this utility model be provide assist handle and and impact tool, assist handle can relative to be processed The impact tool that material implements stroke is dismounted, and is contributed to the vibration isolation of assist handle and is ensured usability.

According to a mode of the present utility model, there is provided can drive top with respect to along defined impact direction of principal axis The assist handle that instrument is dismounted come the impact tool to machined object implementation stroke.The assist handle possesses：Handle Main body, handle portion and elastic sandwiched part.

Handle main body includes installation portion and core.Installation portion is configured to be dismounted relative to impact tool.Core Be formed as lengthwise shape.The first end of core is connected with installation portion, and core extends to the direction for leaving installation portion.In addition, core Also referred to as core.

Handle portion is formed as the tubular of lengthwise, is configured at the surrounding of core.In addition, " surrounding for being configured at core " not office Be limited to the mode that handle portion surrounds core completely, for example, also may include to set slit etc. in handle portion and make one of core to The mode of outer exposed.

Elastic sandwiched part is configured with the state between core and handle portion.In addition, " elasticity " of elastic sandwiched part As described later, it may be said that be the vibration for suppressing to produce on impact direction of principal axis by being located between core and handle portion The key element transmitted to handle portion.Therefore, elastic sandwiched part, for example, suitably, formed by materials such as rubber, springs, and to core The suppression of vibration transmission between portion and handle portion accordingly, sets its elastic constant.In addition, mentioned here " to be situated between In ... state configuration " be not limited between core and handle portion only to configure the mode of elastic sandwiched part, except bullet , can be with the other parts of sandwiched outside property sandwiched part.For example, it is also possible to be configured at other parts and handle in the outside of core Elastic sandwiched part is configured between portion, elasticity can also be configured being configured between other parts of the inner side of handle portion and core Sandwiched part.

In addition, end of the handle portion in the remote installation portion side of core, that is, the second end, with along with impacting direction of principal axis , can be on impact direction of principal axis relative to core centered on the rotary shaft that orthogonal direction extension is distinguished with the long axis direction of core Link in relative rotation with core." can be relatively rotated on impact direction of principal axis " mentioned here means, can be with hitting Rotate action on the direction of spooling general parallel orientation.In addition, relative centered on rotary shaft can turn as core and handle portion Dynamic mode of connection, typically, can be exemplified as such as core and handle portion by the isometric reality of pin set as other parts Existing mode of connection.Dashed forward additionally it is possible to use with the support holes set in handle portion to support from core to both sides are prominent The mode that rises, supported from handle portion raised mode prominent to both sides etc. not by other portions with the support holes set in core Part links the mode of core and handle portion.

If the assist handle of the structure is installed on into impact tool to be used, because of the stroke of impact tool The vibration of generation is transmitted to handle main body first.More specifically, the vibration inputted from impact tool to installation portion, via with The first end of installation portion connection is inputted to core, and is transferred to the second end away from installation portion side.Therebetween, shake with leaving Dynamic source that is, impact tool, gently decay is gone down for vibration.Handle portion can be relatively rotated at the second end relative to core Ground links with core, therefore the vibration decayed to greatest extent during being transmitted along handle main body is inputted to handle portion, and Because the absorption of vibrations of elastic sandwiched part is acted on, the vibration of handle portion further decays.In addition, handle portion can be in impact tool The vibration produced by stroke on impact direction of principal axis where maximum and reigning vibration relative to core Core is supported in relative rotation.Thus, assist handle can effectively suppress impact direction of principal axis vibration passed to handle portion Pass, suppress handle portion in other directions and the relative position relation destabilization in handle main body portion, and ensure usability.

As a mode of the assist handle involved by the utility model, elastic sandwiched part can be between first end State configuration between portion and handle portion.In order to stably support impact tool, and there is handle when holding handle portion in operator Hold apart from impact tool closer to region, i.e. near apart from first end region tendency.Thus, by the region and handle Sandwiched elasticity sandwiched part between portion, it is possible to increase be made for the vibration isolating effect in the region of dealer's holding.

As a mode of the assist handle involved by the utility model, elastic sandwiched part can be formed as ring Shape, is configured to fill the gap between above-mentioned core and handle portion.Can in relative rotation it be propped up relative to core in handle portion Hold in the case of core, gap is produced between handle portion and core.If in the first end near apart from impact tool and There is gap between handle portion, then dust produced because processing operation etc. can enter and stockpile from the gap, be likely to become resistance Hinder the key factor of the relative rotation of handle portion and core.Thus, by the way that the elastic sandwiched part of ring-type is configured into filling Gap between one end and handle portion, can prevent the unfavorable condition.

As a mode of the assist handle involved by the utility model, assist handle can also be further equipped with limitation Portion, the limiting unit limits handle portion and relatively moved relative to core on the direction beyond impact direction of principal axis.In this case, because Vibration for maximum with the vibration produced by stroke and reigning impact direction of principal axis is corresponding, and handle portion only exists Impact and relatively rotated on direction of principal axis, thus it is possible to the further handle portion beyond stable impact direction of principal axis on direction and handle master The relative position relation in body portion, so as to more improve usability.

As a mode of the assist handle involved by the utility model, installation portion and core can not can be relatively moved Ground is integrated.In this case, can be reliable compared with linking the situation of the installation portion being individually formed and core with screw etc. Ground reply impact direction of principal axis and handle portion are relative to the direction that core is relatively rotated.Thereby, it is possible to more reliably suppress impact The vibration of direction of principal axis is transmitted to handle portion.

As a mode of the assist handle involved by the utility model, assist handle can be further equipped with supporting Axle, the support shaft insertion core, and along rotation direction of principal axis extension, and it is supported on handle portion by elastic supporting part.Moreover, Handle portion can by support shaft can relative to core impact direction of principal axis in relative rotation with core link.In the situation Under, support shaft is supported in handle portion by elastic supporting part in itself, thus, it is possible to the absorption of vibrations effect because of bearing part The vibration of handle portion is set further to decay.In addition, identical with aforementioned flexible sandwiched part, elastic supporting part is also, for example, only Suitably to be formed simultaneously by materials such as rubber, springs, inhibitory action has been vibrated accordingly with for being transmitted to handle portion transmission, if Its fixed elastic constant.

In addition, according to a mode of the present utility model, there is provided by driving tip end tool along defined impact direction of principal axis To implement machined object the impact tool of stroke.The impact tool possesses：Tool body and by solid in tool body Determine installation portion and be installed on the assist handle of impact tool., can be using the assist handle of aforementioned manner as assist handle Any one.The impact tool can play the foregoing advantages realized by the assist handle used.

Brief description of the drawings

Fig. 1 is to show to be provided with the integrally-built stereogram of the hammer drill of side handle.

Fig. 2 is the left and right directions sectional side elevation of side handle.

Fig. 3 is the upward view of side handle.

Fig. 4 is the left and right directions sectional side elevation of the bottom of the side handle involved by variation.

Fig. 5 is the left and right directions sectional side elevation of the bottom of the side handle involved by other variations.

Description of reference numerals

1 ... hammer drill；10 ... main parts；11 ... gear housing；12 ... chuck segments；13 ... motor shells；14 ... rears are protruded Portion；15 ... main handles；16 ... handle parts；17 ... triggers；18 ... batteries；19 ... patten transformation control-rods；3 ... side handles； 30 ... handle main bodies；31 ... installation portions；311 ... chuck maintaining parts；312 ... inner peripheral surfaces；313 ... base portions；314 ... are screwed Portion；315 ... connecting portions；316th, 317 ... through holes；32 ... cores；321 ... upper ends；322 ... bottoms；323rd, 325 ... is two-sided Width portion；324th, 326 ... side surfaces；327 ... cylindrical portions；328 ... through holes；329 ... grooves；33 ... handle portions；331 ... upper ends Portion；332 ... bottoms；333 ... left wall；334 ... side surfaces；335 ... right wall portions；336 ... side surfaces；337th, 338 ... insertions Hole；339 ... flange parts；341st, 342 ... limitation ribs；35 ... pins；36 ... anti-dropout rings；361 ... cover portions；362 ... cap assemblies；365、 366 ... o-rings；37 ... o-rings；41 ... nuts；44 ... operating portions；45 ... through holes；47 ... hex bolts.

Embodiment

Illustrate embodiment of the present utility model with reference to the accompanying drawings.In embodiments, as along defined impact axle Direction driving tip end tool implements machined object one example of the impact tool of stroke, enumerates DYN dynamic hammer drill 1 illustrates.In addition, as an example of assist handle, enumerating the side handle 3 for being configured to dismount relative to hammer drill 1 Illustrate.

First, reference picture 1, illustrates the overall structure of hammer drill 1.As shown in figure 1, hammer drill 1 is to form the master of the gabarit of hammer drill 1 Body portion 10 and the main handle 15 held by operator are constituted for main body.

Main part 10 includes gear housing 11 and motor shell 13.Gear housing 11 is formed as lengthwise shape, in its major axis side To one end there is cylindric chuck segment 12.Motor shell 13 from the long axis direction in gear housing 11 with chuck segment 12 The end of opposite side, extends along the direction that the long axis direction with gear housing 11 intersects.

In addition, in the chuck segment 12 of gear housing 11, being configured with and being configured to dismount tip end tool (not shown) Cutter holder (not shown).The hammer drill 1 of present embodiment is configured to implement linearly to drive along impact axle A1 to be installed in cutter holder The action (stroke) of tip end tool, the action (drilling action) for making tip end tool shielding spooling A1 rotation drivings.Operator According to the actual processing operation implemented, the tip end tool of appropriate species and length is selected, with side axially consistent with impact axle A1 Tip end tool is installed on cutter holder by formula.In addition, in the hammer drill 1 of present embodiment, major axis of the impact axle A1 along gear housing 11 Direction extends.

Following for explanation is easy to, the long axis direction of gear housing 11 (is also referred to as impacted into axle A1 directions or top The axial direction of instrument) fore-and-aft direction of hammer drill 1 is defined as, the side for being provided with chuck segment 12 is defined as to the front side of hammer drill 1, by even The side for being connected to motor shell 13 is defined as rear side.In addition, by and and motor shell orthogonal with the long axis direction of gear housing 11 The 13 corresponding direction of bearing of trend is defined as above-below direction, and motor shell 13 is defined as with the side that gear housing 11 is connected Upside, downside is defined as by the side configured for the other end of motor shell 13.

Be formed generally as U-shaped main handle 15 both ends respectively with gear housing 11 and the rearward end of motor shell 13 Connection.The pars intermedia of main handle 15 constitutes the handle part 16 held by operator.Handle part 16 is separated with the rear end of main part 10, It is vertically extending.The trigger 17 that operation is pulled by operator is provided with the preceding upper end of handle part 16.In addition, at this In embodiment, main handle 15 is by elastomeric element at least can in the longitudinal direction to be relatively moved relative to main part 10 Mode links with main part 10.More specifically, on the one hand, the bottom of main handle 15 is rotatable relative to motor shell 13 Ground links therewith；The upper end of another aspect main handle 15 is linked by compression helical spring with gear housing 11, thus main hand Handle 15 can relatively movably link with main part 10 in the longitudinal direction relative to main part 10.Thus, it is possible to suppress hammer drill 1 The vibration in the impact axle A1 directions (fore-and-aft direction) produced during implementation stroke is transmitted from main part 10 to main handle 15.

Here, the internal structure of hammer drill 1 is simplyd illustrate, but since the structure sheet is as known, therefore omit diagram.It is first First, brushless motor, controller of control motor of the driving source as tip end tool etc. are contained in the inside of motor shell 13. In addition, motor shell 13 has rearward prominent rear protrusion 14 in its bottom.In the bottom of rear protrusion 14 It is provided with the battery installation section (not shown) for being configured to dismount for battery 18.Contained and trigger in the inside of main handle 15 Switch of 17 connections etc..Motor, switch etc. are electrically connected with controller.Operator pulls trigger 17, and thus switch is opened, Motor is powered, and is driven.

Movement conversion mechanism, hammer bank, rotary transfer machine and cutter holder etc. are contained in the inside of gear housing 11.Its In, cutter holder and hammer bank are contained in the chuck segment 12 of the leading section of gear housing 11.The rotary power of motor is changed to motion Mechanism and rotary transfer machine transmission.Movement conversion mechanism is configured to be converted to the rotary power of motor the straight line fortune of piston It is dynamic.Hammer bank is configured to the linear motion with piston, applies the impact force on impact axle A1 directions to tip end tool.With The driving of motor, the switching mechanism of tip end tool passive movement and hammer bank linearly back and forth drive along impact axle A1 directions.Rotation Turn transmission mechanism to be made up of multiple gears, and be configured to after the rotary power for making motor suitably slows down, finally by conduct The cutter holder of axle is transmitted to tip end tool.With the driving of motor, tip end tool drives shielding spooling A1 (edges by rotary transfer machine It is circumferential) rotation.

In addition, the hammer drill 1 of present embodiment is configured to the patten transformation control-rod by being set in gear housing 11 19 operation, is selected as any one pattern in hammer drill pattern, hammer mode, drill mode these three patterns.Hammer drill pattern is Implement the pattern of stroke and drilling action.Hammer mode is the pattern for only implementing stroke.Drill mode is only to implement The pattern of drilling action.Hammer drill pattern or hammer mode of the side handle 3 described later in these patterns make hammer drill 1 do what is acted In the case of (implement stroke in the case of) use, it is particularly useful.In addition, being internally provided with gear housing 11 for being somebody's turn to do The mechanism of pattern switching, but the structure of the mechanism is known, therefore omit the description and illustrate herein.

Referring to Fig. 1 to Fig. 3, illustrate the side handle 3 for being configured to dismount relative to hammer drill 1.First, side hand is illustrated The overall structure of handle 3.As shown in Fig. 2 side handle 3 possesses：Handle main body 30, handle portion 33 including installation portion 31 and core 32 And o-ring 37.Installation portion 31 is configured to dismount relative to impact tool.Core 32 is formed as lengthwise shape, one end (Fig. 2 In upper end 321) be connected with installation portion 31, core 32 to leave installation portion 31 direction extend.Handle portion 33 is formed as vertical Long tubular, is configured at the surrounding of core 32.O-ring 37 is the endless member of rubber system, to be folded in core 32 and handle portion State configuration between 33.

As shown in figure 1, side handle 3 is removably installed in hammer drill 1 by installation portion 31.In addition, side handle 3 can be with handle Any one mode radially extended (that is, in the mode orthogonal with the impact axle A1 of the hammer drill 1) peace of hand 33 along chuck segment 12 Loaded on hammer drill 1.However, below, for convenience of description, the direction of side handle 3 is defined as with as shown in Figure 1 with the edge of handle portion 33 The direction of hammer drill 1 when the mode of the above-below direction extension of hammer drill 1 is mounted is consistent.

Illustrate the structure of handle main body 30.As depicted in figs. 1 and 2, in handle main body 30, installation portion 31 is configured to phase For main part 10 (more specifically, the being chuck segment 12) dismounting of hammer drill 1.In the present embodiment, installation portion 31 includes Chuck maintaining part 311 and base portion 313.What the part (specifically, being bottom) that chuck maintaining part 311 is formed as in circumference disconnected Ring-type (i.e. C-shaped), and with inner peripheral surface 312 corresponding with the outer peripheral face of cylindric chuck segment 12.In addition, by inner peripheral surface The inner space of chuck maintaining part 311 as defined in 312 as hammer drill 1 main part 10 (more specifically, being chuck segment 12) Configuration section function.

Base portion 313 includes be screwed portion 314 and connecting portion 315.Portion 314 be screwed from the one of chuck maintaining part 311 Individual end (specifically, being right part) the edge direction orthogonal with the axis A2 of chuck maintaining part 311 (specifically, being lower section) Extension configuration.Connecting portion 315 is from another end (specifically, being left part) of chuck maintaining part 311, with the portion of being screwed 314 extend configuration along with the identical direction (lower section) of the portion of being screwed 314 spaced apartly.Connecting portion 315 is than the portion that is screwed 314 protrude downwards.The bottom of connecting portion 315 is bent to the right, with the portion of being screwed 314 it is spaced apart to being screwed The lower section extension in portion 314.By the structure, it is formed between the portion of being screwed 314 and connecting portion 315 and is under main visual observation The gap of inverted L shape.

In addition, be respectively formed with the portion of being screwed 314 and connecting portion 315 extend in left-right direction through hole 316, 317.Through hole 316,317 is extended in left-right direction with coaxial state.Nut 41 is not configured revolvably in the portion of being screwed 314 Through hole 316 inside.In the through hole 317 of connecting portion 315, the bar portion of the hex bolts 47 integrated with operating portion 44 from Right is inserted, and the top ends of hex bolts 47 and the screw thread of nut 41 being configured inside through hole 316 coordinate.Thus, on the one hand, Make operating portion 44 around the axial counterclockwise rotates of hex bolts 47, so that hex bolts 47 is integratedly relative with operating portion 44 Moved to the left in nut 41, the gap enlargement being screwed between portion 314 and connecting portion 315 in the lateral direction.The opposing party Face, makes operating portion 44 be turned clockwise around the axial direction of hex bolts 47, so that hex bolts 47 is integratedly relative with operating portion 44 Moved to the right in nut 41, space loss.

Operator in the state of the gap between the portion of being screwed 314 and connecting portion 315 in the lateral direction is expanded, Chuck segment 12 is inserted through chuck maintaining part 311, afterwards, operating portion 44, constriction gap, so that by chuck maintaining part 311 is operated It is fixed on the outer peripheral face of chuck segment 12.Thus, side handle 3 is confirmed as fixed relation relative to the relative configuration of hammer drill 1. In present embodiment, chuck maintaining part 311 is configured to, when being secured relative to chuck segment 12, the axis of chuck maintaining part 311 A2 is consistent with the impact axle A1 (axle of tip end tool) of hammer drill 1.

Under the connecting portion 315 of the one end (upper end 321) of the core 32 of handle main body 30 and foregoing installation portion 31 End connection, core 32 extends downwards from installation portion 31.In the present embodiment, core 32 is integrally formed as list with installation portion 31 One part (handle main body 30), thus can not be relatively moved ground integrated with installation portion 31.In addition, in the present embodiment, It is bar-shaped that core 32 extends with being formed as substantially linear shape, and its axis A3 is orthogonal with the axis A2 of chuck maintaining part 311.That is, exist When chuck maintaining part 311 is secured relative to chuck segment 12, axis A3 is orthogonal with the impact axle A1 of hammer drill 1.

Core 32 is formed as substantially cylindric, and the part and a part for bottom 322 of upper end 321 are respectively formed as Two-sided width portion (arrives the center of circle of circle (cylinder) with the parallel lines (plane) of one group of diameter for being smaller than circle (cylinder) with the two (axis) equidistant mode intercepts shape obtained from the circle (cylinder)) 323,325.Below for convenience, by the double of core 32 Part beyond face width portion 323,325 is referred to as cylindrical portion 327.As shown in Figures 2 and 3, the two-sided width portion of bottom 322 325 have a contralateral surface 326,326, a contralateral surface 326,326 than cylindrical portion 327 outer peripheral face in the inner part, on a left side It is opposed in right direction, configure in parallel to each other.Thus, two-sided width portion 325 has the fore-and-aft direction section longer than left and right directions Shape.Similarly, as shown in Fig. 2 the two-sided width portion 323 of upper end 321 also has a contralateral surface 324,324, this is a pair Side surface 324,324 than cylindrical portion 327 outer peripheral face in the inner part, it is opposed in the lateral direction, configure in parallel to each other.Separately Outside, the two-sided width portion 325 in bottom 322 is formed with the through hole 328 extended in left-right direction.

In (more specifically, the lower section of two-sided width portion 323 and for cylindrical portion 327 of upper end 321 of core 32 Upper end) be formed with complete cycle around outer peripheral face ring-type groove 329.O-ring 37 is installed in groove 329.

Handle portion 33 has the length being substantially the same with core 32, is formed as the cylindric hollow part of both ends open. The outer surface of handle portion 33 is the part held by operator, is formed as the central portion bulging of substantially long axis direction (above-below direction) Spindle shape.In addition, part of the handle portion 33 beyond bottom 332 has the internal diameter being substantially the same.Handle main body 30 Core 32 with the substantially coaxial state of handle portion 33 to be inserted into inside handle portion 33.

In the bottom 332 of handle portion 33, it is provided with for enabling handle portion 33 relative to core 32 in relative rotation Constructed with the link that core 32 links.Specifically, in bottom 332 left wall 333, right wall portion 335 be respectively arranged with The through hole 337,338 that coaxial state extends in left-right direction.In addition, through hole 337,338 also with the inside of handle portion 33 The through hole 328 of the core 32 of configuration is connected with coaxial state.Pin 35 inserts these through holes 337,328,338 successively, is passing through Anti-dropout ring 36 is fixed on inside through hole 338, thus handle portion 33 can be relative to core 32 in the impact axle A1 directions of hammer drill 1 On link in relative rotation with core 32.The rotary shaft A4 of handle portion 33 is along with impacting the axle A1 directions (axle of chuck maintaining part 311 Line A2 directions, fore-and-aft direction) and core 32 long axis direction (above-below direction) it is generally normal direction (left and right directions) extension.This Outside, in the present embodiment, the rotary shaft A4 of handle portion 33 is consistent with the axis of pin 35.

The flange part 339 that oriented radial outside is extended is formed in the upper end of handle portion 33.On the one hand, in flange part 339 Left inside side surface and Right Inboard surface are respectively arranged with the limitation rib 341,342 protruded to the right with left.Limit rib 341,342 Jag contacted respectively from left and right with the side surface 324,324 of foregoing two-sided width portion 323.On the other hand, exist It is not provided with limiting on the fore-and-aft direction of rib 341,342,323 points of the upper end 331 of handle portion 33 and the two-sided width portion of core 32 From.By the structure, two-sided width portion 323 is allowed while sliding on one side phase in the longitudinal direction at side surface 324,324 To movement.

In addition, the local left wall 333 in the formation bottom 332 of handle portion 33, right wall portion 335 is formed must be than front and rear wall Portion is thick.The side surface 334 of left wall 333 and the side surface 336 in right wall portion 335 are configured in parallel to each other, right in the lateral direction Put.On the one hand, side surface 334,336 is contacted from left and right with the side surface 326,326 of two-sided width portion 325 respectively.Separately On the one hand, the front and rear wall portion of bottom 332 is separated with two-sided width portion 325.By the structure, two-sided width portion 325 is permitted Perhaps while being slided at side surface 326,326 while being relatively rotated in the longitudinal direction centered on rotary shaft A4.

Inner surface of the o-ring 37 that groove 329 in the upper end 321 of core 32 is installed with handle portion 33 on complete cycle is tight Patch.That is, o-ring 37 is configured to fill the gap between core 32 and handle portion 33.Two-sided width portion 323 with limitation rib 341, 342 (specifically, side surface 324,324 with limitation rib 341,342 jags) abut against contact site, two-sided width portion 325 with left wall 333, right wall portion 335 (specifically, side surface 326,326 and side surface 334, the contact site 336) abutted against Position, the part being configured with beyond the position of o-ring 37, between being set between the outer peripheral face of core 32 and the inner peripheral surface of handle portion 33 Gap, core 32 and handle portion 33 are separated.

Illustrate effect and the effect of side handle 3 as constructed as above.Operator according to the species of performed processing operation plus The direction in work face, adjusts the direction of side handle 3 so that handle portion 33 relative to impact axle A1 (fore-and-aft direction of hammer drill 1) along institute It is desired to radially extend, and chuck maintaining part 311 is fixed on to the outer peripheral face of chuck segment 12.

In the case where have selected hammer drill pattern by mode transitions control-rod 19, pulled when to the implementation of trigger 17 During operation, stroke and drilling action start.In the case where have selected hammer mode, when to trigger 17 implement pull behaviour When making, only stroke starts.Because of stroke hammer drill 1 produce vibration in it is maximum and it is reigning vibration be to hit The vibration in spooling A1 directions (fore-and-aft direction of hammer drill 1).Vibrate the installation portion 31 from the chuck segment 12 of hammer drill 1 to handle main body 30 Input, is transmitted via the upper end 321 being connected with installation portion 31 to core 32.And then, vibration is delivered to and pacified from upper end 321 Dress portion 31 separates the bottom 322 of side.Therebetween, with vibration source is left also, that is, hammer drill 1 is left, under vibration gently decays Go.Handle portion 33 can be linked with core 32 in relative rotation in bottom 322 by pin 35 relative to core 32, therefore will The vibration decayed to greatest extent during being transmitted along handle main body 30 is inputted via pin 35 to handle portion 33.In addition, because The absorption of vibrations of the o-ring 37 configured between the upper end 321 of core 32 and handle portion 33 with sandwiched state is acted on, handle portion 33 Vibration further decay.

In addition, rotation of the handle portion 33 to extend along direction orthogonal with impact axle A1 and core 32 long axis direction respectively Centered on axle A4 (axis of pin 35), by pin 35, it can link in relative rotation with core 32 relative to core 32.That is, handle Hand 33 can be relatively rotated relative to core 32 on impact axle A1 directions.Even if in addition, the bearing of trend of handle portion 33 by It is set as the direction beyond the above-below direction shown in Fig. 1, handle portion 33 is also maintained relative to the relative rotation direction of core 32 For impact axle A1 directions.Thus, the vibration that side handle 3 can effectively suppress to impact on axle A1 directions is transmitted to handle portion 33, Suppress handle portion 33 in other directions and the relative position relation destabilization of handle main body 30 simultaneously, so as to ensure to make The property used.

In addition, when implementing stroke, the vibration for impacting the direction beyond axle A1 directions is less than impact axle A1 directions, because This simultaneously less needs special countermeasure.Thus, when implementing stroke, handle portion 33 is relative to core 32 not in impact axle A1 Relatively moved on direction beyond direction, it is considered to be usability is higher for operator.In the present embodiment, in handle The two-sided width that the limitation rib 341,342 that the upper end 331 of hand 33 is set is set from left and right and in the upper end 321 of core 32 Portion 323 is contacted, and handle portion 33 bottom 332 set left wall 333, right wall portion 335 from left and right with core 32 Bottom 322 sets two-sided width portion 325 to contact.Pass through the structure, side of the limitation handle portion 33 beyond impact axle A1 directions Relative movement upwards.That is, two-sided width portion 323 (side surface 324,324) and limitation rib 341,342 and the (side of two-sided width portion 325 Surface 326,326) with left wall 333 (side surface 334), right wall portion 335 (side surface 336) be respectively structured as limit handle portion 33 The limiting unit relatively moved relative to core 32 on the direction beyond impact axle A1 directions.Thus, with impact axle A1 directions Vibration correspondence, handle portion 33 is only relatively rotated on impact axle A1 directions, therefore, it is possible to further stable impact axle A1 directions with Outer handle portion 33 and the relative position relation of handle main body 30, more improve usability.

However, in the case that operator holds side handle 3 when implementing stroke, in order to stably support hammer drill 1, and In the presence of the tendency for holding the region as close possible to hammer drill 1.In the present embodiment, in the upper end 321 of core 32 and handle Between the upper end 331 in portion 33, the o-ring 37 of elastomer that is, rubber system is folded with, therefore, it is possible to improve operator's holding The vibration isolating effect in region.In addition, o-ring 37 is configured as filling the gap between upper end 321 and upper end 331.If There is gap between the upper end 321 near apart from hammer drill 1 and upper end 331, then process in operation dust for producing etc. from the seam Gap enters and stockpiled, so as to as the key factor for hindering handle portion 33 and core 32 to relatively rotate.Thus, as this implementation Mode configures o-ring 37 like that, thus, it is possible to prevent the unfavorable condition.

In addition, in the present embodiment, installation portion 31 and core 32 are integrally formed as single part (handle main body 30), Thus it can not mutually relatively move ground integrated.Therefore, be formed as independent part with installation portion 31 and core 32 and link Situation is compared, and the possibility of impact axle A1 and rotary shaft A4 configuration relation dislocation is low.That is, the phase of handle portion 33 can reliably be made It is corresponding with impact axle A1 directions for the relative rotation direction of core 32.Thereby, it is possible to will more reliably impact axle A1 directions Vibration transmitted to handle portion 33.

Above-mentioned embodiment is simple illustration, and assist handle and impact tool involved by the utility model do not limit to In the structure of illustrated side handle 3 and hammer drill 1.For example, the change of following illustrations can also be increased.In addition, these relevant changes More, can be by only any one or more and the side handle 3 and hammer drill 1 or each technical scheme group shown in embodiment in them Close and use.

As long as the link construction handle portion 33 at the bottom 322 of core 32 and the bottom 332 of handle portion 33 can Link in relative rotation with core 32 on impact axle A1 directions relative to core 32, can suitably change.Join below According to Fig. 4 and Fig. 5, illustrate two variations related to the link construction of core 32 and handle portion 33.

Variation shown in Fig. 4 is to construct (reference picture 2) relative to link illustrated in above-mentioned embodiment, and blocking is passed through The opening portion of through hole 337,338, so as not to link the pin 35 of core 32 and handle portion 33 head and top ends to outer exposed Example.Specifically, joined integrally there is resinous cover portion 361 on the head of pin 35.Cover portion 361 is formed as and through hole 337 Opening portion be fitted together to, occlusion of openings portion, and with the outer surface coplanar with the outer surface of handle portion 33.In addition, in through hole 338 opening portion is fitted together to the cap assembly 362 for having the rubber system with the hole chimeric with the top ends of pin 35.It is identical with cover portion 361, Cap assembly 362 is again formed as having the outer surface coplanar with the outer surface of handle portion 33.So, by setting cover portion 361, cover portion Part 362, the outer surface of handle portion 33 becomes smooth, can eliminate hook, therefore, it is possible to improve the operational and outer of side handle 3 See.

Variation shown in Fig. 5 is to construct (reference picture 2) relative to link illustrated in above-mentioned embodiment, is changed to Pin 35 is supported in the example of handle portion 33 in through hole 337,338 by o-ring 365,366.O-ring 365,366 is rubber The endless member of glue.In this embodiment, handle portion 33 passes through the pin 35, Neng Gouxiang by elastomer that is, the supporting of o-ring 365,366 Link in relative rotation with core 32 on impact axle A1 directions for core 32.By the structure, because of o-ring 365,366 Absorption of vibrations is acted on, and can make further to decay from the vibration that core 32 is transmitted via pin 35 to handle portion 33.In addition, fulcrum post 35 part it is not necessary to by rubber system, if with the suppression to the vibration transmission to handle portion 33 accordingly, using suitable When elastomer, set its elastic constant.In addition, the shape of the part about fulcrum post 35, from pin 35 can be spread all over From the viewpoint of entirely circumferentially supporting, preferably ring-type, but be not necessarily ring-type.For example, multiple elastomers can be configured at pin Multiple positions in 35 circumference.

In addition, in above-mentioned embodiment and variation, core 32 and handle portion 33 are linked by pin 35, but also may be used To link both in the method beyond pin 35.It is for instance possible to use setting the bottom 322 along rotary shaft A4 directions from core 32 The mode raised and by the support holes that are arranged at handle portion 33 supported prominent to handle portion 33.On the contrary, can also adopt The bottom 332 supported with the support holes from being set in core 32 along rotary shaft A4 directions from handle portion 33 is prominent to core 32 The mode of projection.

Side handle 3 can also can be dismounted relative to the position beyond the chuck segment 12 of main part 10.In addition, side handle 3 can be also used for being configured to implement the power tool (for example, electric hammer) beyond the hammer drill 1 of stroke.

Side handle 3 is set to be not limited to above-mentioned implementation relative to the structure that hammer drill 1 or other power tools are dismounted Illustrated installation portion 31 in mode.Specifically, relatively rotated as long as side handle 3 has in handle portion 33 relative to core 32 When rotary shaft A4 it is orthogonal with the long axis direction of core 32 and when side handle 3 is installed on hammer drill 1 or other power tools turn Moving axis A4 also with the orthogonal structure of impact axle.In other words, as long as side handle 3 is with the length with rotary shaft A4 and core 32 It can be fixed in the state of the orthogonal virtual line of direction of principal axis is parallel with impact axle relative to hammer drill 1 or other power tools Structure.In addition, in order that handle portion 33 is reliably right relative to the relative rotation direction and impact axle A1 directions of core 32 Should, preferably as embodiment described above, installation portion 31 and core 32 can not be relatively moved ground integrated.However, not arranging Except installation portion 31 and core 32 are formed independent part and the mode linked.

The elastic sandwiched part configured between core 32 and handle portion 33 with sandwiched state is not limited to above-mentioned implementation The o-ring 37 of illustrated rubber system in mode, as long as it is configured to press down by being located between core 32 and handle portion 33 Make the elastomer that the vibration produced on impact axle A1 directions is transmitted to handle portion 33.Therefore, as long as elastic sandwiched part Accordingly formed with the suppression to the vibration transmission between core 32 and handle portion 33 by appropriate elastomer and set its elasticity Constant.For example, can substitute rubber uses compression helical spring.In this case, compression helical spring is preferably with handle Hand 33 relative on the relative rotation direction (impact axle A1 directions) of core 32, i.e. fore-and-aft direction from sandwich core 32 Mode, is configured between core 32 and handle portion 33 with sandwiched state.

, can be with addition, elastic sandwiched part need not be clamped directly by the inner surface of the outer surface of core 32 and handle portion 33 It is located in by miscellaneous part between core 32 and handle portion 33.In addition, with sandwiched state between core 32 and handle portion 33 The elastic sandwiched part of configuration may not be formed as ring-type and be configured to fill the gap between core 32 and handle portion 33.And then, Relevant elasticity sandwiched part, if it is considered that the high region of the possibility of operator's holding, then preferred disposition is in the upper of core 32 Between end 321 and handle portion 33, but it is not precluded from being configured at the mode of other positions.For example, it is also possible to by elastic interposed unit Part is configured between the central portion on the long axis direction of core 32 and handle portion 33.

In the above-described embodiment, impacted as limiting handle portion 33 relative to core 32 beyond axle A1 directions The limiting unit relatively moved on direction, is provided with combination and two-sided width portion of the two-sided width portion 323 with limitation rib 341,342 325 with left wall 333, the combination in right wall portion 335., can also two however, such limiting unit only can set any one to combine It is individual all to omit.In addition, the shape of limiting unit, allocation position are also not limited to the example of above-mentioned embodiment.But, from can From the viewpoint of most effectively suppression handle portion 33 is relatively moved relative to core 3 on the direction beyond impact axle A1 directions, It is preferred that as embodiment described above, limiting unit to be arranged to the both ends on the long axis direction of core 32.

As described above, the viewpoint from reliably reply impact axle A1 directions and the relative rotation direction of handle portion 33 goes out Hair, preferably installation portion 31 and core 32 can not be relatively moved ground integrated, but the part for being not precluded from independently forming can be relative The mode movably linked.In addition, installation portion 31 and core 32 can not be relatively moved it is ground integrated in the case of, installation portion 31 and core 32 can be integrally formed as single part as embodiment described above, can also be by the part independently formed Can not relatively movably it link.

It will be shown below each component parts and each component parts of the present utility model of above-mentioned embodiment and variation Corresponding relation.Hammer drill 1 is configuration example corresponding with " impact tool " of the present utility model.Side handle 3 be with it is of the present utility model " assist handle " corresponding configuration example.Handle main body 30 is configuration example corresponding with " handle main body " of the present utility model.Install Portion 31 is configuration example corresponding with " installation portion " of the present utility model.Core 32 is structure corresponding with " core " of the present utility model Into example, upper end 321 and bottom 322 are compositions corresponding with " first end " of the present utility model and " the second end " respectively Example.Handle portion 33 is configuration example corresponding with " handle portion " of the present utility model.O-ring 37 be and it is of the present utility model " elasticity The corresponding configuration example of sandwiched part ".Rotary shaft A4 is configuration example corresponding with " rotary shaft " of the present utility model.Two-sided width portion 323rd, 325, limitation rib 341,342, left wall 333, right wall portion 335 are structures corresponding with " limiting unit " of the present utility model respectively Into example.Pin 35 is configuration example corresponding with " support shaft " of the present utility model.O-ring 365,366 is and " bullet of the present utility model The corresponding configuration example of property supporting member ".

In view of the purport of the utility model and above-mentioned embodiment, builds following structure (mode).In following structure only Any one or more can be used with the side handle 3 and hammer drill 1 or each solution pool shown in embodiment.

[mode 1]

Above-mentioned impact tool is further configured to do spinning movement and energy by making above-mentioned tip end tool around above-mentioned impact axle Enough that defined processing operation is performed to machined object, in above-mentioned the second end, above-mentioned core and above-mentioned handle portion can have respectively There is the face contact zone that face contact is carried out using the tangential direction of the spinning movement around above-mentioned impact axle as the mutually opposing state of normal Domain.

[mode 2]

Above-mentioned core can above-mentioned the second end outer peripheral face, with mutual using above-mentioned tangential direction as above-mentioned normal Two planes that is, core contact surface of configured in parallel, are used as above-mentioned face contact area；Above-mentioned handle portion can have in inner peripheral surface Have and configuration is parallel to each other using above-mentioned tangential direction as above-mentioned normal and two planes of plane-plane contact are contacted with above-mentioned core also I.e. handle portion contact surface, is used as above-mentioned face contact area.

[mode 3]

Support shaft is further equipped with, the above-mentioned core of its insertion simultaneously extends and by elastic supporting part along above-mentioned rotation direction of principal axis Part is supported in above-mentioned handle portion,

Above-mentioned face contact area is in the tangential direction around the above-mentioned spinning movement of above-mentioned impact axle, and can also also serve as prevents The interference part that the power produced between above-mentioned core and above-mentioned handle is transmitted to above-mentioned elastic supporting part.

(that is, it is able to carry out in the case where impact tool is configured to make tip end tool shielding spooling do spinning movement In the case that drilling is acted), for example, when the unexpected locking with machined object of tip end tool, impact tool can be around sometimes Impact axle rotation.According to aforesaid way 1 and the assist handle of mode 2, in the end farthest apart from impact tool (that is, core The end of second end side) place, handle portion is firmly held relative to core in the way of face is contacted.Particularly, in mode 2 Assist handle in because two-sided (the core contact surface) and handle portion of core two-sided (handle portion contact surface) face contact, institute More firmly it is kept relative to core with handle portion.Thus, in the case where impact tool wants shielding spooling to rotate, Operator also can firmly control impact tool.In addition, according to the assist handle of aforesaid way 3, even in tip end tool around When impact axle does the drilling action of spinning movement, can also prevent the elastic supporting part of support shaft from being misplaced on rotating shaft direction, Come off.

In addition, the side surface 326 of the core 32 of above-mentioned embodiment and variation, 326, the side surface of left wall 333 334th, the side surface 336 in right wall portion 335 is the configuration example of aforesaid way 1 to 3 " face contact area ".In addition, side surface 326, 326 be the configuration example of aforesaid way 1 to 3 " core contact surface ", and side surface 334 and side surface 336 are " handle portion contact surfaces " Configuration example.Pin 35 is the configuration example of " support shaft ", and o-ring 365,366 is the configuration example of " elastic supporting part ".

Claims (7)

1. a kind of assist handle, can come real to machined object with respect to along defined impact direction of principal axis driving tip end tool The impact tool for applying stroke is dismounted, it is characterised in that possessed：

Handle main body, it includes：Be configured to the installation portion and first end that are dismounted relative to above-mentioned impact tool with Above-mentioned installation portion connection and the core of the lengthwise shape extended to the direction away from above-mentioned installation portion；

Handle portion, it is formed as the tubular of lengthwise, is configured at the surrounding of above-mentioned core；And

Elastic sandwiched part, it is configured with the state between above-mentioned core and above-mentioned handle portion,

Above-mentioned handle portion above-mentioned core lean on away from above-mentioned installation portion side end that is, the second end, with along respectively with it is above-mentioned , can be relative to above-mentioned core centered on the rotary shaft of the orthogonal direction extension of long axis direction for impacting direction of principal axis and above-mentioned core Link in relative rotation with above-mentioned core on above-mentioned impact direction of principal axis.

2. assist handle according to claim 1, it is characterised in that

Above-mentioned elastic sandwiched part is arranged with the state between above-mentioned first end and above-mentioned handle portion.

3. assist handle according to claim 2, it is characterised in that

Above-mentioned elastic sandwiched part is formed as ring-type, is configured to fill the gap between above-mentioned core and handle portion.

4. assist handle according to claim 1, it is characterised in that

Further there is limiting unit, the above-mentioned handle portion of limiting unit limitation is relative to above-mentioned core beyond above-mentioned impact direction of principal axis Direction on relatively move.

5. assist handle according to claim 1, it is characterised in that

Above-mentioned installation portion and above-mentioned core can not be relatively movably integrated.

6. assist handle according to claim 1, it is characterised in that

Support shaft is further equipped with, the above-mentioned core of support shaft insertion, and extend along above-mentioned rotation direction of principal axis, and by by elasticity Supporting member is supported on above-mentioned handle portion,

Above-mentioned handle portion by above-mentioned support shaft can on above-mentioned impact direction of principal axis relative to above-mentioned core in relative rotation with Above-mentioned core links.

7. a kind of impact tool, dynamic to implement impact to machined object by driving tip end tool along defined impact direction of principal axis Make, it is characterised in that possess：

Tool body；And

Assist handle any one of the claims 1 to 6, its above-mentioned tool body is fixed on by installation portion and by It is installed on above-mentioned impact tool.