CN203956218U - Reciprocating tool - Google Patents
Reciprocating tool Download PDFInfo
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- CN203956218U CN203956218U CN201420287417.6U CN201420287417U CN203956218U CN 203956218 U CN203956218 U CN 203956218U CN 201420287417 U CN201420287417 U CN 201420287417U CN 203956218 U CN203956218 U CN 203956218U
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- 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
- B25F5/02—Construction of casings, bodies or handles
Abstract
The utility model provides a kind of reciprocating tool, and it can reduce centered by the center of gravity of housing and the moment of the circumferencial direction that produces.Reciprocating tool of the present utility model has: the power transmission member that the power forward end instrument of power source is transmitted; Can reciprocating mode to support the tool body of above-mentioned front end tool; And at least one party who is located at above-mentioned tool body and reduces above-mentioned power transmission member or above-mentioned front end tool moves back and forth and the dynamic vibration absorber of the moment of the circumferencial direction centered by the center of gravity of above-mentioned tool body that produces in prescribed direction.According to the utility model, when the power forward end instrument of power source is transmitted, can reduce the moment of the circumferencial direction centered by the center of gravity of tool body.
Description
Technical field
The utility model relates to the reciprocating tool that utilizes the power of power source that front end tool is moved back and forth.
Background technology
All the time known have the power forward end instrument transmission of the power source of motor, engine etc., and front end tool is moved back and forth, thereby for cutting off the reciprocating tool of the operation etc. of object, one example is documented in patent documentation 1.The reciprocating tool that patent documentation 1 is recorded, has: the gear of revolving force that is delivered in the output shaft of the motor that the inside of tool body arranges; The eccentric part arranging prejudicially from the pivot of gear; The balance weight with the slotted hole that the mode that can move with eccentric part configures; Link with balance weight and carry out reciprocating push rod; And the front end tool that is installed on push rod.
The reciprocating tool that patent documentation 1 is recorded moves back and forth to cut off in the process of object at front end tool, balance weight contrary with front end tool towards moving, thereby reduce the vibration of tool body.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2011-115913 communique
Utility model content
Utility model problem to be solved
But the center of gravity from tool body of the reciprocating tool that patent documentation 1 is recorded is different to the distance of the center of gravity of push rod with the center of gravity from tool body to the centroidal distance of balance weight.Therefore, the moment producing around the center of gravity of tool body because of the action of balance weight and the moment unbalance producing around the center of gravity of tool body because of the action of push rod, cannot reduce the moment around the center of gravity of tool body.
The purpose of this utility model is, the reciprocating tool of the moment that can reduce the circumferencial direction centered by the center of gravity of tool body is provided.
For solving the scheme of problem
Scheme 1 is a kind of reciprocating tool, it is characterized in that, has:
The power transmission member that the power forward end instrument of power source is transmitted;
Can reciprocating mode to support the tool body of above-mentioned front end tool; And
At least one party who is located at above-mentioned tool body and reduces above-mentioned power transmission member or above-mentioned front end tool moves back and forth and the dynamic vibration absorber of the moment of the circumferencial direction centered by the center of gravity of above-mentioned tool body that produces in prescribed direction.
Scheme 2, according to the reciprocating tool described in scheme 1, is characterized in that,
At above-mentioned tool body, be provided with balance weight, this balance weight is configured to and can in the direction identical with afore mentioned rules direction, moves back and forth, and towards at least one party with above-mentioned power transmission member or above-mentioned front end tool, move back and forth towards the opposite towards the vibration that moves back and forth to reduce above-mentioned tool body.
Scheme 3, according to the reciprocating tool described in scheme 1, is characterized in that,
Above-mentioned tool body has:
Hold above-mentioned power source and also with upright upwardly extending first portion in side of handing over of afore mentioned rules;
Be connected and hold above-mentioned power transmission member with the end of above-mentioned first portion and upwardly extending second portion in afore mentioned rules side; And
The handle portion that connects above-mentioned first portion and above-mentioned second portion,
Above-mentioned dynamic vibration absorber is located in above-mentioned handle portion.
Scheme 4, according to the reciprocating tool described in scheme 3, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
Above-mentioned pouring weight in the plane that comprises afore mentioned rules direction, and while moving in one direction, near the connecting portion of above-mentioned first portion and above-mentioned handle portion, and when another side moves up, the connecting portion of close above-mentioned second portion and above-mentioned handle portion.
Scheme 5, according to the reciprocating tool described in scheme 2, is characterized in that,
Above-mentioned tool body has:
Hold above-mentioned power source and upwardly extending first portion in the side with afore mentioned rules direction quadrature;
Be connected and hold above-mentioned power transmission member with the end of above-mentioned first portion and upwardly extending second portion in afore mentioned rules side; And
The handle portion that connects the end of above-mentioned first portion and the end of above-mentioned second portion,
Above-mentioned dynamic vibration absorber is in above-mentioned first portion and be located at the end with above-mentioned second contrary side of portion.
Scheme 6, according to the reciprocating tool described in scheme 5, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
The vibration-direction of above-mentioned pouring weight is parallel with afore mentioned rules direction.
Scheme 7, according to the reciprocating tool described in scheme 2, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight that the vibration because of above-mentioned tool body moves back and forth and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
Above-mentioned pouring weight moves back and forth in the tangential direction of the circle centered by above-mentioned center of gravity.
Scheme 8, according to the reciprocating tool described in scheme 7, is characterized in that,
The second center line that the first center line that above-mentioned pouring weight moves back and forth and at least one party of above-mentioned power transmission member or above-mentioned front end tool move back and forth intersects.
Scheme 9, according to the reciprocating tool described in scheme 7, is characterized in that,
The first center line that above-mentioned pouring weight moves back and forth is parallel with the second center line that at least one party of above-mentioned power transmission member or above-mentioned front end tool moves back and forth.
Scheme 10, according to the reciprocating tool described in scheme 7, is characterized in that,
Above-mentioned power transmission member and above-mentioned front end tool all move back and forth in afore mentioned rules direction.
Scheme 11, according to the reciprocating tool described in scheme 1, is characterized in that,
Above-mentioned front end tool has:
Be fixed on the counteredge on above-mentioned tool body; And
The movable cutting edge of utilizing the power of above-mentioned power source to move back and forth,
The vibration-direction of above-mentioned power transmission member is different from the vibration-direction of above-mentioned movable cutting edge,
Above-mentioned dynamic vibration absorber reduces that above-mentioned power transmission member moves back and forth and the moment of the circumferencial direction centered by the center of gravity of above-mentioned tool body that produces.
Scheme 12, according to the reciprocating tool described in scheme 11, is characterized in that,
Above-mentioned power transmission member has:
Transmit the power of above-mentioned power source and the spinner member being rotated centered by back shaft;
With respect to above-mentioned back shaft, arrange prejudicially and utilize and be delivered to the eccentric shaft that the power of above-mentioned spinner member is rotated; And
Link and the revolving force of above-mentioned eccentric shaft be converted to the connecting rod of the reciprocating motion power of above-mentioned movable cutting edge with above-mentioned eccentric shaft.
The effect of utility model is as follows.
According to the utility model, when the power forward end instrument of power source is transmitted, can reduce the moment of the circumferencial direction centered by the center of gravity of tool body.
Accompanying drawing explanation
Fig. 1 means the cutaway view of the embodiment 1 of the scroll saw of having applied reciprocating tool of the present utility model.
Fig. 2 means the schematic diagram that reduces the principle of vibration in the scroll saw shown in Fig. 1.
Fig. 3 means the cutaway view of the embodiment 2 of the scroll saw of having applied reciprocating tool of the present utility model.
Fig. 4 means the schematic diagram that reduces the principle of vibration in the scroll saw shown in Fig. 3.
Fig. 5 means the cutaway view of the embodiment 3 of the scroll saw of having applied reciprocating tool of the present utility model.
Fig. 6 means the schematic diagram that reduces the principle of vibration in the scroll saw shown in Fig. 5.
Fig. 7 means the cutaway view of the embodiment 4 of the scroll saw of having applied reciprocating tool of the present utility model.
Fig. 8 means the schematic diagram that reduces the principle of vibration in the scroll saw shown in Fig. 7.
Fig. 9 means the top view of the embodiment 5 of the scroll saw of having applied reciprocating tool of the present utility model.
In figure:
10-scroll saw, 11,41-housing, 14-motor, 22-balance weight, 25-push rod, 27,46-front end tool, 33,57,60,64-dynamic vibration absorber, 35-auxiliary block, 40-hedgeclipper, 47-counteredge, 48-movable cutting edge, 52-gear, 53-back shaft, 54-eccentric shaft, 56-connecting rod, E1-direction, A2, A4-center line, B1, D1-center of gravity.
The specific embodiment
(embodiment 1)
Based on Fig. 1 and Fig. 2, to reciprocating tool of the present utility model being applied to the embodiment 1 of scroll saw, describe.Fig. 1 is the cutaway view that a part of having applied the scroll saw 10 of reciprocating tool of the present utility model is blocked to represent.Scroll saw 10 has the housing 11 as tool body, and housing 11 has: first portion 12 of extending in the horizontal direction; Second portion 13 of extending upward from the end of first portion 12; And the handle portion 30 that connects the end of first portion 12 and the end of second portion 13.The center line of the center line of first portion 12 and second portion 13 intersects.If scroll saw 10 is observed in side, housing 11 is ring-type.
In first portion 12, be provided with motor 14.Output shaft 15 at motor 14 is provided with pinion 16.In the scope of the inside from 12 to second portions 13 of first portion, be fixed with tooth rest 17, the bearing 18 being arranged on tooth rest 17 supports output shaft 15 in the mode that can rotate.
On tooth rest 17, in the mode that can rotate, be supported with the main shaft parallel with output shaft 15 19.On main shaft 19, fixed gear 20, gear 20 and pinion 16 engagements.And, in the direction of the center line A5 along pinion 16, between gear 20 and tooth rest 17, be provided with cam 21.Cam 21 is wholely set with gear 20, and cam 21 is one rotation together with gear 20.The peripheral shape in the plane vertical with center line A5 of cam 21 is circular, configures the center line A1 of main shaft 19 in the position from cam 21 center bias.
In the direction along center line A1, between tooth rest 17 and gear 20, be provided with balance weight 22.On balance weight 22, be provided with the elliptical aperture 23 connecting in the direction along center line A1.In the plane vertical with center line A1, the inner peripheral surface of elliptical aperture 23 is shaped as ellipse, in elliptical aperture 23, in the mode that can move, configures cam 21.In the plane vertical with center line A1, cam 21 can move with respect to balance weight 22.Thus, if gear 20 and cam 21 one rotations, balance weight 22 utilizes the locomotivity of cam 21 and carries out reciprocating action.
Balance weight 22 can move back and forth along the vertical direction in Fig. 1.In addition, in the inside of housing 11, be provided with the guide member of the direction of action of regulation balance weight 22.In the plane vertical with center line A1, the reciprocating action amount of balance weight 22 is equivalent to cam 21 center with respect to two times of the offset of center line A1.
In gear 20, in the position from center line A1 bias, be provided with the pin 24 having along the length of the direction of center line A1.Pin 24 eccentric positions with respect to center line A1 are for cam 21 position in 180 degree for the eccentric position of center line A1.In addition, in the scope of the inside from 12 to second portions 13 of first portion, be provided with in Fig. 1 on above-below direction can reciprocating action push rod 25.Push rod 25 is equivalent to power transmission member of the present utility model.In addition, in the inside of housing 11, be provided with the guide member of the direction of action of regulation push rod 25.On push rod 25, be provided with slotted hole 26, pin 24 inserts in slotted hole 26 in the mode that can move.
In the lower end of push rod 25, in handling mode freely, assemble front end tool blade 27, the lower horizontal of housing 11 matrix 28 is installed.At matrix 28, be provided with peristome 29, blade 27 generally perpendicularly extends to the below of matrix 28 by peristome 29.In the plane parallel with center line A1, the reciprocating action amount of push rod 25 is equivalent to two times of offset of the centre-to-centre spacing center line A1 of pin 24.
In addition, be provided with the handle portion 30 that connects the end of first portion 12 and the end of second portion 13.The center line of handle portion 30 is positioned in the plane identical with the reciprocating action direction of push rod 25.In handle portion 30, be provided with switch 31.Switch 31 is operated by operator.In addition, in the end of first portion 12 of housing 11, connect mains cord 32, from external power source, via mains cord 32, supply with electric power.The position that holds switch 31 in handle portion 30 namely first handle portion is positioned at the position of the connecting portion that approaches handle portion 30 and second portion 13.In addition, first-hand shank, in order to ensure the space of operator's console switch 31, is compared second-hand's shank described later, to approach the angle of level, extends.
And handle portion 30 is tubulars, in the inside of handle portion 30, be provided with dynamic vibration absorber 33.The position that holds dynamic vibration absorber 33 in handle portion 30 namely second handle portion is positioned at the position that more approaches the connecting portion of handle portion 30 and first portion 12 than first-hand shank.In addition, second-hand's shank is compared the angle extension of first-hand shank to tilt with respect to horizontal direction.Dynamic vibration absorber 33 has: the shell 34 being fixedly installed in handle portion 30; Can be located at movably the pouring weight 35 of the inside of shell 34; And two elastomers 36 being located at the inside of shell 34.Inside at shell 34 forms two air chambers that separated by pouring weight 35 37.Air chamber 37 is located on elastomer 36 each ground.At shell 34, be formed with the pore 38 by air chamber 37.
Pouring weight 35 is integrally formed by metal material etc.Two elastomers 36 are metal compression helical springs.Pouring weight 35, between two elastomers 36, and can move back and forth in the direction along center line A4.Namely, pouring weight 35 can move back and forth in the tangential direction of the circle centered by center of gravity B1.If scroll saw 10 is observed in side, it is parallel with the center line A3 that balance weight 22 carries out reciprocating action that push rod 25 carries out the center line A2 of reciprocating action.If extend the center line A4 that pouring weight 35 moves back and forth, with center line A2.Center line A4 is equivalent to the first center line of the present utility model, and center line A2 is equivalent to the second center line of the present utility model.
In addition, in the present embodiment, pouring weight 35, in the plane of the reciprocating action direction that comprises push rod 25, moves back and forth between direction near the end of first portion 12 and the connecting portion of handle portion 30 and the other direction near the connecting portion of the end of second portion 13 and handle portion 30.Second-hand's shank has space more than needed of the amount of not taking in switch 31, even thereby at second-hand's shank, dynamic vibration absorber 33 is set, also the maximization of housing 11 integral body can be suppressed to Min..In addition, second-hand's shank is owing to leaving from there is second portion 13 and the center of gravity B1 of vibration, so can effectively reduce turning moment.
Next, the action of scroll saw 10 is described.After operator is connected on external power source by mains cord 32, control handle portion 30, and console switch 31, thereby to motor 14, supply with electric power, output shaft 15 rotations.The transmission of torque of output shaft 15 is in the situation of gear 20, and the rotating speed of gear 20 is with respect to the rotating speed step-down of output shaft 15., pinion 16 and gear 20 be reductors, the torque of output shaft 15 is exaggerated and transmits to gear 20.
If gear 20 rotates centered by main shaft 19, sell 24 around center line A1 revolution, pin 24 is in the interior movement of slotted hole 26.Thus, the power of pin 24 revolution is converted to and makes push rod 25 in the power moving back and forth along center line A2 direction, and push rod 25 and blade 27 all move back and forth in Fig. 1 on above-below direction.If matrix 28 touches object 39, object 39 is cut off by blade 27.Object 39 comprises timber, steel plate.
Next, to reducing the principle of scroll saw 10 vibrations, describe.The revolving force of motor 14 is converted to the power that push rod 25 carries out reciprocating action, and push rod 25 and blade 27 move back and forth in the direction along center line A2, produces the power that makes scroll saw 10 vibrations.In addition, push rod 25 and blade 27 move back and forth integratedly, so process as one thing, for the purpose of facilitating, are labeled as push rod 25.
On the other hand, if cam 21 one rotation centered by main shaft 19 together with gear 20, cam 21 moves in the elliptical aperture 23 of balance weight 22 on long axis direction.Thus, the revolving force of cam 21 is converted to and makes balance weight 22 in the direction along center line A3, carry out the power of reciprocating action, and balance weight 22 carries out reciprocating action in Fig. 1 on above-below direction.Like this, a part for the power of motor 14 is delivered to balance weight 22, balance weight 22 forced vibrations.
Balance weight 22 along center line A3 carry out reciprocating action towards carry out the antiphase that is oriented of reciprocating action along center line A2 with push rod 25.Thus, the relation of the amount of the moving back and forth dw1 of the quality mw1 of balance weight 22, balance weight 22, the quality mp of push rod 25, the amount of moving back and forth dp is designed to roughly meet mathematical expression (1), thereby can reduce the vibration of the scroll saw 10 that the reciprocating motion by push rod 25 causes.
Mw1 * dw1=mp * dp mathematical expression (1)
But push rod 25 and balance weight 22 carry out the reciprocating motion of antiphase with same period, the distance L p from the center of gravity B1 of scroll saw 10 to the center of gravity B2 of push rod 25 is with different to the distance L w1 of balance weight 22 center of gravity B3 from center of gravity B1.Therefore,, in scroll saw 10, produce the moment M shown in mathematical expression (2).The center of gravity B1 of scroll saw 10 is centers of gravity that the housing 11 of the whole parts that comprise motor 14, balance weight 22, gear 20, push rod 25, blade 27, tooth rest 17, dynamic vibration absorber 33 etc. is installed.
M=(mp * dp * Lp)-(mw1 * dw1 * Lw1) mathematical expression (2)
In mathematical expression (2), (mp * dp * Lp) represents the moment M1 by the reciprocating motion generation of push rod 25, and (mw1 * dw1 * Lw1) represents the moment M2 by the reciprocating motion generation of balance weight 22.Moment M, M1, M2 are all the power of the circumferencial direction centered by center of gravity B1.
In addition, center line A2 is the tangent line of the circle centered by center of gravity B1, and center line A3 is the tangent line of the circle centered by center of gravity B1.And, there is the relation of distance L P > distance L W.Therefore, if the vibration of the scroll saw 10 that the reciprocating motion that utilizes the reciprocating motion of balance weight 22 to reduce push rod 25 causes can produce the moment M that deducts the amount of moment M2 from moment M1.
The scroll saw 10 of present embodiment, for the moment M that makes to deduct the amount of moment M2 from moment M1 is zero, also has dynamic vibration absorber 33 except balance weight 22.Namely, if scroll saw 10 vibrations move back and forth in the direction of center line A4 at pouring weight 35, be suppressed at the covibration of the intrinsic frequency periphery of scroll saw 10.Center line A4 is the tangent line with respect to the circle centered by center of gravity B1, if push rod 25 in Fig. 1 towards above action, pouring weight 35 from first portion 12, leave towards tangentially motion.
Therefore,, if pouring weight 35 moves back and forth in the direction along center line A4,, in housing 11, on the circumferencial direction centered by center of gravity B1, produce moment M3.Moment M3 is in the other direction with respect to moment M1.Therefore, thus, in having the scroll saw 10 of balance weight 22 and dynamic vibration absorber 33, can as mathematical expression (3), make moment M is zero.
M=(mp * dp * Lp)-(mw1 * dw1 * Lw1)-(mw2 * dw2 * Lw2)=0 formula (3)
, the moment M3 being produced by the reciprocating motion of pouring weight 35 represents with (mw2 * dw2 * Lw2).And, can also be roughly to meet the mode of mathematical expression (3) by the quality mw2 of pouring weight 35, the center of gravity B4 of the amount of movement dw2 of pouring weight 35, pouring weight 35 designs pouring weight 35 to the distance L w2 of center of gravity B1.
Like this, scroll saw 10 can be offset the moment M producing at circumferencial direction centered by center of gravity B1, can reduce the vibration of the direction of rotation centered by center of gravity B1.In addition, by adjusting distance L w2, amount of movement dw2, quality mw2, can reduce the vibration of the scroll saw 10 that the reciprocating motion of push rod 25 causes.
In addition, pouring weight 35 is not to vibrate because of forced vibration, but the vibration that the reciprocating motion by push rod 25 is produced is as helping the power of shaking to vibrate.Namely, the power of motor 14 is not consumed in pouring weight 35 vibrations that make dynamic vibration absorber 33, thereby can suppress the power loss of motor 14.And need not design the power conversion of motor 14 is that the mechanism of vibration force of pouring weight 35 is also passable, can suppress the complex structure of scroll saw 10.
And as shown in Figure 2, if scroll saw 10 is observed in side, center of gravity B4 is located at a side contrary to center of gravity B2, B3 with respect to center of gravity B1.Can make thus the distance L w2 from center of gravity B1 to center of gravity B4 also longer than distance L w1, Lp.Therefore, the quality mw2 of pouring weight 35 can be reduced, the structure of dynamic vibration absorber 33 can be simplified.In addition, dynamic vibration absorber 33 can be located to the position of leaving from motor 14, push rod 25 etc.If illustrated, dynamic vibration absorber 33 utilizes the dead angle that is positioned at handle portion 30 inside originally to configure.
(embodiment 2)
Based on Fig. 3, to being equivalent to the scroll saw 10 of the embodiment 2 of reciprocating action instrument of the present utility model, describe.Structure and the scroll saw shown in Fig. 1 10 of the scroll saw 10 shown in Fig. 3 are general, and the difference of the scroll saw 10 shown in the scroll saw 10 shown in Fig. 3 and Fig. 1 is the allocation position of dynamic vibration absorber 33.Scroll saw 10 shown in Fig. 3 is in first portion 12 and be provided with dynamic vibration absorber 33 with the end of second portion's 13 opposition side.Namely, in the direction along center line A5, between dynamic vibration absorber 33 and tooth rest 17, configure motor 14.The pouring weight 35 of the dynamic vibration absorber 33 shown in Fig. 3 carries out reciprocating action along center line A4, and center line A4 is parallel with center line A2.In addition, in center line A4 direction, the configuring area of the configuring area of motor 14 and dynamic vibration absorber 33 is overlapping at least a portion.
If the scroll saw shown in Fig. 3 10 also designs in the mode of mathematical expression (3), can equally with the scroll saw 10 of Fig. 1 make moment M is zero.In addition, in the scroll saw 10 of Fig. 3, the schematic diagram of former reason Fig. 4 of reduction vibration represents.Therefore, the scroll saw 10 of Fig. 3 can obtain the effect identical with the scroll saw 10 of Fig. 1.In the present embodiment, in the position of leaving from second portion 13, be provided with dynamic vibration absorber 33, thus effective utilization of implementation space and the effectively reduction of turning moment.
(embodiment 3)
Next, based on Fig. 5 and Fig. 6, explanation is equivalent to the hedgeclipper of the embodiment 3 of reciprocating tool of the present utility model.Hedgeclipper is used for the pruning of hedgerow, the beta pruning of garden trees etc., be with front end tool, to cut off the reciprocating tool of object.Hedgeclipper 40 has housing 41, in the inside of housing 41, is provided with motor 42.
In addition, be provided with the battery component 43 in housing 41 handling, if the switch 44 of housing 41 is located in operator's operation, the electric power of battery component 43 is supplied with to motor 42, and the output shaft 45 of motor 42 is to a direction rotation.At output shaft 45, gear 49 is installed.At housing 41, front end tool 46 is installed.Front end tool 46 has in motionless mode and is fixed on the counteredge 47 of housing 41 and the movable cutting edge arranging in the mode movable with respect to housing 41.
At housing 41, be provided with the Poewr transmission mechanism that the power of motor 42 is transmitted to movable cutting edge 48.This Poewr transmission mechanism has: with gear 49 meshed gears 50; The gear 51 coaxial with gear 50 and one arranges rotatably; And with gear 51 meshed gears 52.Gear 52 is equivalent to spinner member of the present utility model.The number of teeth of the gear ratio gear 50 of gear 51 is few, and the number of teeth of the gear ratio gear 51 of gear 52 is many.Thus, if the torque of motor 42 is transmitted to gear 52 via gear 49,50, the rotating speed that a side of the rotating speed of gear 52 compares output shaft 45 becomes low speed., Poewr transmission mechanism is reductor, the torque of transmitting is amplified.
Gear 52 rotates centered by back shaft 53, is provided with rotation eccentric axis 54 together with gear 52.Eccentric shaft 54 center is eccentric with respect to back shaft 53 center, if gear 52 rotations, eccentric shaft 54 is around back shaft 53 revolution.
On the other hand, on housing 41, be provided with and make movable cutting edge 48 in the direction along center line C1, carry out reciprocating guide member, in movable cutting edge 48, be provided with pin 55.And eccentric shaft 54 and pin 55 are linked by connecting rod 56.If overlooked, observe hedgeclipper 40, connecting rod 56 can oscillating motion centered by back shaft 53.Therefore, if gear 52 rotations, eccentric shaft 54 is around back shaft 53 revolution, and the revolving force of eccentric shaft 54 is converted to the reciprocating motion power that movable cutting edge 48 is moved upward in the side along center line C1.Like this, the vibration-direction of connecting rod 56 and eccentric shaft 54 is different from the vibration-direction of movable cutting edge 48.Above-mentioned eccentric shaft 54 and connecting rod 56 are equivalent to power transmission member of the present utility model.
And, in the inside of housing 41, be provided with dynamic vibration absorber 57.In addition, as shown in Figure 6, if overlooked, observe hedgeclipper 40, leaf spring 58 configures along center line C1.And, between front end tool 46 and dynamic vibration absorber 57, configure gear 49,50,51,52 and connecting rod 56 etc.The pivot of gear 49,50,51,52 is configured on center line C1.
And dynamic vibration absorber 57 has metal leaf spring 58 and is fixed on the pouring weight 59 of leaf spring 58.Leaf spring 58 with the two ends along center line C1 direction by setting tool 59A respectively the state of fixing dual-gripper beam be located in housing 41.In addition, if overlooked, observe hedgeclipper 40, take leaf spring 58 thickness direction as with center line C1 orthogonal direction towards leaf spring 58 is installed.If overlooked, observe hedgeclipper 40, leaf spring 58 is intersect with center line C1 can strain in direction.
In the hedgeclipper 40 as shown in Fig. 5 and Fig. 6, the torque of motor 42 is transmitted to back shaft 53 via gear 49,50,51,52, back shaft 53 rotations.The revolving force of back shaft 53 is via connecting rod 56 to movable cutting edge 48, and movable cutting edge 48 moves back and forth in the direction along center line C1.Its result, the object between counteredge 47 and movable cutting edge 48 is sheared power and cuts off.
But, at eccentric shaft 54, centered by back shaft 53, revolve round the sun, and during connecting rod 56 action, if overlooked, observe hedgeclipper 40, produce and make hedgeclipper 40 along intersecting the power of direction E1 vibration with center line C1.Direction E1 is equivalent to prescribed direction of the present utility model.On the other hand, if produce the power that will make hedgeclipper 40 vibrations, dynamic vibration absorber 57 utilizes this power to reduce vibration., there are strains in leaf spring 58, pouring weight 59 moves back and forth in the direction identical with direction E1.Pouring weight 59 action towards the antiphase that is oriented with connecting rod 56 actions, reduce the vibration of hedgeclipper 40.
Here, as shown in Figure 6, if overlooked, observe hedgeclipper 40, the center of gravity D1 of hedgeclipper 40 is positioned on center line C1 on housing 41, and between the end and back shaft 53 of a side in front end tool 46 is installed.Namely, if connecting rod 56 and eccentric shaft 54 move back and forth, the quality based on connecting rod 56 and eccentric shaft 54, the amount of movement from the center of gravity of connecting rod 56 and eccentric shaft 54 to distance, connecting rod 56 and the eccentric shaft 54 of center of gravity D1, produce vibration force.
On the other hand, if pouring weight 59 moves back and forth, the quality based on pouring weight 59, from the center of gravity F1 of pouring weight 59 to the distance of center of gravity D1, the amount of movement of pouring weight 59, produce to offset the power of vibration.Like this, because the hedgeclipper 40 of embodiment 3 has dynamic vibration absorber 57, so can reduce vibration.In addition, the center of gravity D1 of hedgeclipper 40 is provided with all centers of gravity of the housing 41 of parts such as motor 42, battery component 43, front end tool 46, Poewr transmission mechanism, dynamic vibration absorber 57.
(embodiment 4)
Next, based on Fig. 7 and Fig. 8, to being equivalent to the hedgeclipper of the embodiment 4 of reciprocating tool of the present utility model, describe.In the hedgeclipper 40 shown in Fig. 7 and Fig. 8, for the structure part identical with the hedgeclipper 40 shown in Fig. 5 and Fig. 6, the symbol that mark is identical with Fig. 5 and Fig. 6.The structure of the dynamic vibration absorber 60 of the hedgeclipper 40 shown in Fig. 7 and Fig. 8 is different from dynamic vibration absorber 57.
And dynamic vibration absorber 60 has metal leaf spring 61, one end of the long side direction of leaf spring 61 is fixed by setting tool 62.In addition, the free end at leaf spring 61 is provided with the thicker pouring weight portion 63 in other positions of Thickness Ratio that makes leaf spring 61.The cantilever beam state that leaf spring 61 is fixed by setting tool 62 with one end of the direction along center line C1 is located in housing 41.In addition, if overlooked, observe hedgeclipper 40, take leaf spring 61 thickness direction as with center line C1 orthogonal direction towards leaf spring 61 is installed.If overlooked, observe hedgeclipper 40, leaf spring 61 be take setting tool 62 as fulcrum, along carrying out strain with the crossing direction E1 of center line C1.
But, at eccentric shaft 54, centered by back shaft 53, revolve round the sun, and during connecting rod 56 action, if overlooked, observe hedgeclipper 40, produce and make hedgeclipper 40 along the power with the crossing direction E1 vibration of center line C1.On the other hand, if produce the power that will make hedgeclipper 40 vibrations, dynamic vibration absorber 57 utilizes this power to reduce vibration., there are strains in leaf spring 58, pouring weight 59 moves back and forth in the direction identical with direction E1.Pouring weight 59 action towards the antiphase that is oriented with connecting rod 56 actions, reduce the vibration of hedgeclipper 40.
In the hedgeclipper 40 of Fig. 7 and Fig. 8, the component part identical for the hedgeclipper 40 with Fig. 5 and Fig. 6 produces same function.On the other hand, if the pouring weight portion 63 of dynamic vibration absorber 60 moves back and forth, the quality based on pouring weight portion 63, from the center of gravity G1 of pouring weight portion 63 to the distance of center of gravity D1, the amount of movement of pouring weight portion 63, produce to offset the power of vibration.Like this, because the hedgeclipper 40 of embodiment 4 has dynamic vibration absorber, so can reduce vibration.
(embodiment 5)
Then, based on Fig. 9, to being equivalent to the hedgeclipper of the embodiment 5 of reciprocating tool of the present utility model, describe.In the hedgeclipper 40 shown in Fig. 9, for the structure part identical with the hedgeclipper 40 shown in Fig. 5 and Fig. 6, the symbol that mark is identical with Fig. 5 and Fig. 6.The structure of the dynamic vibration absorber 64 of the hedgeclipper 40 shown in Fig. 9 is different from dynamic vibration absorber 57.Dynamic vibration absorber 64 is located in housing 41.Dynamic vibration absorber 64 has shell 34, is provided with pouring weight 66 in shell 34.If overlooked, observe hedgeclipper 40, pouring weight 66 along with the crossing direction E1 action of center line C1.In Fig. 9, direction E1 and center line C1 quadrature.In the inside of shell 65, on direction E1 and in the both sides of pouring weight 66, be provided with elastomer 67,68.Elastomer the 67, the 68th, compression helical spring, the power of elastomer 67,68 puts on pouring weight 66.
In the hedgeclipper 40 of Fig. 9, the identical component part of hedgeclipper 40 for Fig. 5 and Fig. 6, produces identical effect.If the hedgeclipper shown in Fig. 9 40 carries out the torque forward end instrument of motor 42 46 to transmit the operation of cutting off object, with the identical principle of hedgeclipper 40 with Fig. 7 and Fig. 8, produce and make hedgeclipper 40 along the power with the crossing direction E1 vibration of center line C1.On the other hand, if produce the power that will make hedgeclipper 40 vibrations, dynamic vibration absorber 64 utilizes this power to reduce vibration., there are strains in elastomer 67,68, pouring weight 66 moves back and forth in the direction identical with direction E1.Pouring weight 66 action towards the antiphase that is oriented with connecting rod 56 actions, reduce the vibration of hedgeclipper 40.Namely, the quality based on pouring weight 66, from the center of gravity H1 of pouring weight 66 to the distance of center of gravity D1, the amount of movement of pouring weight 66, produces the power of offsetting vibration.Like this, because the hedgeclipper 40 of embodiment 5 has dynamic vibration absorber 64, so can reduce vibration.
Reciprocating tool of the present utility model is not limited to above-mentioned embodiment, in the scope that does not depart from the utility model purport, can carry out various changes.For example, the scroll saw of embodiment 1 and embodiment 2 is structures that the electric power of external power source is supplied with to motor, but so long as can loading and unloading battery assembly on housing, also the electric power of battery component can be supplied with to motor.In the scroll saw 10 shown in Fig. 1, dynamic vibration absorber can also be located to the inside of the connecting portion of second portion 13 and handle portion 30.In this situation, the center line that auxiliary block moves back and forth is coaxial with center line A2, or intersects with center line A2.
And parallel, the vertical term that this description is recorded is except structure is each other completely parallel, the vertical meaning, due to the scale error of element, the assembly errors of element etc. also comprise almost parallel, substantially vertical.
And spinner member of the present utility model, except gear, also comprises pulley, roller.And, in all embodiments, can also replace motor and use engine as power source.Power transmission member of the present utility model comprises the elements such as push rod, axle, member, frame.In addition, the utility model comprises the reciprocating tool of the structure that the power forward end instrument of power source is transmitted, and such as, hammer, hammer, revolves tool, electric hammer drill, energy-saving saw etc.
Claims (12)
1. a reciprocating tool, is characterized in that, has:
The power transmission member that the power forward end instrument of power source is transmitted;
Can reciprocating mode to support the tool body of above-mentioned front end tool; And
At least one party who is located at above-mentioned tool body and reduces above-mentioned power transmission member or above-mentioned front end tool moves back and forth and the dynamic vibration absorber of the moment of the circumferencial direction centered by the center of gravity of above-mentioned tool body that produces in prescribed direction.
2. reciprocating tool according to claim 1, is characterized in that,
At above-mentioned tool body, be provided with balance weight, this balance weight is configured to and can in the direction identical with afore mentioned rules direction, moves back and forth, and towards at least one party with above-mentioned power transmission member or above-mentioned front end tool, move back and forth towards the opposite towards the vibration that moves back and forth to reduce above-mentioned tool body.
3. reciprocating tool according to claim 1, is characterized in that,
Above-mentioned tool body has:
Hold above-mentioned power source and also with upright upwardly extending first portion in side of handing over of afore mentioned rules;
Be connected and hold above-mentioned power transmission member with the end of above-mentioned first portion and upwardly extending second portion in afore mentioned rules side; And
The handle portion that connects above-mentioned first portion and above-mentioned second portion,
Above-mentioned dynamic vibration absorber is located in above-mentioned handle portion.
4. reciprocating tool according to claim 3, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
Above-mentioned pouring weight in the plane that comprises afore mentioned rules direction, and while moving in one direction, near the connecting portion of above-mentioned first portion and above-mentioned handle portion, and when another side moves up, the connecting portion of close above-mentioned second portion and above-mentioned handle portion.
5. reciprocating tool according to claim 2, is characterized in that,
Above-mentioned tool body has:
Hold above-mentioned power source and upwardly extending first portion in the side with afore mentioned rules direction quadrature;
Be connected and hold above-mentioned power transmission member with the end of above-mentioned first portion and upwardly extending second portion in afore mentioned rules side; And
The handle portion that connects the end of above-mentioned first portion and the end of above-mentioned second portion,
Above-mentioned dynamic vibration absorber is in above-mentioned first portion and be located at the end with above-mentioned second contrary side of portion.
6. reciprocating tool according to claim 5, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
The vibration-direction of above-mentioned pouring weight is parallel with afore mentioned rules direction.
7. reciprocating tool according to claim 2, is characterized in that,
Above-mentioned dynamic vibration absorber has pouring weight that the vibration because of above-mentioned tool body moves back and forth and can reciprocating mode to support the elastomer of above-mentioned pouring weight,
Above-mentioned pouring weight moves back and forth in the tangential direction of the circle centered by above-mentioned center of gravity.
8. reciprocating tool according to claim 7, is characterized in that,
The second center line that the first center line that above-mentioned pouring weight moves back and forth and at least one party of above-mentioned power transmission member or above-mentioned front end tool move back and forth intersects.
9. reciprocating tool according to claim 7, is characterized in that,
The first center line that above-mentioned pouring weight moves back and forth is parallel with the second center line that at least one party of above-mentioned power transmission member or above-mentioned front end tool moves back and forth.
10. reciprocating tool according to claim 7, is characterized in that,
Above-mentioned power transmission member and above-mentioned front end tool all move back and forth in afore mentioned rules direction.
11. reciprocating tools according to claim 1, is characterized in that,
Above-mentioned front end tool has:
Be fixed on the counteredge on above-mentioned tool body; And
The movable cutting edge of utilizing the power of above-mentioned power source to move back and forth,
The vibration-direction of above-mentioned power transmission member is different from the vibration-direction of above-mentioned movable cutting edge,
Above-mentioned dynamic vibration absorber reduces that above-mentioned power transmission member moves back and forth and the moment of the circumferencial direction centered by the center of gravity of above-mentioned tool body that produces.
12. reciprocating tools according to claim 11, is characterized in that,
Above-mentioned power transmission member has:
Transmit the power of above-mentioned power source and the spinner member being rotated centered by back shaft;
With respect to above-mentioned back shaft, arrange prejudicially and utilize and be delivered to the eccentric shaft that the power of above-mentioned spinner member is rotated; And
Link and the revolving force of above-mentioned eccentric shaft be converted to the connecting rod of the reciprocating motion power of above-mentioned movable cutting edge with above-mentioned eccentric shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013116060A JP2014233790A (en) | 2013-05-31 | 2013-05-31 | Reciprocating tool |
| JP2013-116060 | 2013-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203956218U true CN203956218U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420287417.6U Expired - Fee Related CN203956218U (en) | 2013-05-31 | 2014-05-30 | Reciprocating tool |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2014233790A (en) |
| CN (1) | CN203956218U (en) |
| DE (1) | DE202014102429U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110709202A (en) * | 2017-05-31 | 2020-01-17 | 工机控股株式会社 | Reciprocating tool |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300347B (en) * | 2018-12-12 | 2023-11-07 | 喜利得股份公司 | reciprocating saw |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516583U (en) * | 1974-07-02 | 1976-01-17 | ||
| JP2005074573A (en) * | 2003-09-01 | 2005-03-24 | Makita Corp | Reciprocating working tool |
| US7938196B2 (en) * | 2009-04-17 | 2011-05-10 | Hilti Aktiengesellschaft | Hand-held power tool with vibration-compensating mass |
| JP5482157B2 (en) * | 2009-12-04 | 2014-04-23 | 日立工機株式会社 | Reciprocating tool |
| JP5635945B2 (en) * | 2011-05-24 | 2014-12-03 | 株式会社マキタ | Electric tool |
-
2013
- 2013-05-31 JP JP2013116060A patent/JP2014233790A/en active Pending
-
2014
- 2014-05-23 DE DE202014102429.8U patent/DE202014102429U1/en not_active Expired - Lifetime
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110709202A (en) * | 2017-05-31 | 2020-01-17 | 工机控股株式会社 | Reciprocating tool |
| US11701722B2 (en) | 2017-05-31 | 2023-07-18 | Koki Holdings Co., Ltd. | Reciprocating tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014233790A (en) | 2014-12-15 |
| DE202014102429U1 (en) | 2014-06-12 |
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