CN104416225B - Reciprocating saw - Google Patents
Reciprocating saw Download PDFInfo
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- CN104416225B CN104416225B CN201310400886.4A CN201310400886A CN104416225B CN 104416225 B CN104416225 B CN 104416225B CN 201310400886 A CN201310400886 A CN 201310400886A CN 104416225 B CN104416225 B CN 104416225B
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- balance weight
- elongated slot
- main shaft
- saw blade
- saw
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Abstract
The present invention relates to a kind of reciprocating saw, including：Saw blade reciprocating motion driving mechanism, saw blade reciprocating motion driving mechanism are mountable to main shaft thereon including saw blade；The motor of power is provided for saw blade reciprocating motion driving mechanism；And the balance weight component for reducing saw blade vibration, balance weight component include pivotable balance weight connecting portion and are connected on balance weight connecting portion and can be along the balance weight moved in the opposite direction with motion of main shaft side.Balance weight connecting portion includes sector gear and the linking arm integral with sector gear, balance weight component further includes the rack engaged with sector gear, when spindle reciprocating motion, by the engagement between sector wheel and rack, linking arm driving balance weight moves in the opposite direction along with motion of main shaft side.According to the present invention, even if using the balance weight of smaller quality can obtain good effectiveness in vibration suppression, and the weight saving of entire reciprocating saw, volume can be made to reduce and compact-sized.
Description
Technical field
The present invention relates to electric saw more particularly to a kind of reciprocating motion electric saws.
Background technology
The electric saw of saw blade reciprocating motion is also referred to as reciprocating saw.In the reciprocating saw course of work, saw blade is constantly accelerated
With deceleration to perform reciprocating motion, this inevitably leads to reciprocating saw and generates larger vibration.This vibration not only increases
Noise, and so that operating personnel are uncomfortable.For this purpose, reciprocating saw is being modified to reduce always the vibration of complete machine.
GB2446688A discloses a kind of reciprocating saw, it includes being redirected the balance of rocking arm and counterweight structure with balance
Recombinate part.Balance is redirected rocking arm and is connected on housing by top pivot section, and connected by lower part pivot section
It is connected on counterweight structure.Counterweight structure is also connected to by pivot section on plunger actuation rocking arm.In the process of running,
Balance weight component reduces vibration by the counter motion with saw blade.But since this balance weight modular construction is complicated and
Its reciprocating motion is not linear movement, thus needs to occupy larger space, and the structure for leading to entire reciprocating saw is not compact.
JP2001353619A discloses a kind of reciprocating saw, it includes the driving of spindle reciprocating motion of the driving equipped with saw blade
Component and the balance weight being connect by rocker arm with drive component.In the process of running, drive component simultaneously driving spindle and
Balance weight moves in the opposite direction to reduce vibration.But due to the rocker arm with balance reconnection directly and drive link
It connects and in the middle around pivoting on housing is fixed on, the stroke of balance weight is restricted, so that vibration damping
Effect it is also restrained.In order to obtain better effectiveness in vibration suppression, the balance weight of bigger quality must be just used, this causes entirely
The weight of reciprocating saw increases, volume increase and structure be not compact.
It is then desired to existing reciprocating saw is improved.
Invention content
Present invention aim to overcome above-mentioned at least one defect of the prior art, a kind of reciprocating saw is proposed, this
Kind reciprocating saw is entire past so as to make even if the effectiveness in vibration suppression realized in the case of using the balance weight of lighter weight
The weight saving sawed again, volume reduce and compact-sized.
For this purpose, according to an aspect of the present invention, a kind of reciprocating saw is provided, including：
Saw blade reciprocating motion driving mechanism, the saw blade reciprocating motion driving mechanism are mountable to thereon including saw blade
Main shaft；
The motor of power is provided for the saw blade reciprocating motion driving mechanism；And
For reduce saw blade vibration balance weight component, the balance weight component include pivotable balance weight connecting portion,
Be connected on the balance weight connecting portion and can be along the balance weight moved in the opposite direction with the motion of main shaft side；
It is characterized in that, the balance weight connecting portion includes sector gear and the connection integral with the sector gear
Arm, the balance weight component further include the rack engaged with the sector gear, when the spindle reciprocating motion, by described
Engaging between sector gear and the rack, the linking arm drive the balance weight along with motion of main shaft direction phase
Anti- direction movement.
Preferably, the balance weight connecting portion is pivotally mounted to by pivot on the main shaft, on the linking arm
With turning up the soil vertically extending axis pin with the pivotal interval, the axis pin drive the balance weight along with the motion of main shaft
Side moves in the opposite direction.
Preferably, the distance between the pivot and the axis pin are chosen to so that when the motion of main shaft to most front side
Shi Suoshu balance weights move side to the end and the balance weight moves to most front side when the motion of main shaft side to the end.
Preferably, the balance weight is elongated including the first elongated slot and second set at interval along straight line
Slit and relative to first elongated slot and the vertically extending third elongated slot of second elongated slot, first
Positioning pin and the second positioning pin are each passed through first elongated slot and second elongated slot and the axis pin passes through
The third elongated slot.
Preferably, the saw blade reciprocating motion driving mechanism includes first half-shell body and the second half shell, and the main shaft is worn
The guiding sleeve being fixed on the first half-shell body is crossed, the rack is fixed on the first half-shell body, and described first
Positioning pin and second positioning pin are fixed in second half shell.
Preferably, during the third elongated slot is between first elongated slot and second elongated slot
Heart position and spaced apart relative to first elongated slot and second elongated slot in vertical direction.
Preferably, the pivot is located along the same line with first elongated slot and second elongated slot.
Preferably, the guiding sleeve is fixed to by clamping plate on the first half-shell body, and the clamping plate is also right
The balance restarts guiding function.
Preferably, the saw blade reciprocating motion driving mechanism further includes the first cone with the output axis connection of the motor
Gear and the second bevel gear engaged with the first bevel gear, are provided with cam pin in the second bevel gear, it is described partially
Heart pin is accommodated in the slit extended with its longitudinal axis on the end of the main shaft.
Preferably, the saw blade clamping device for clamping saw blade is provided on the other end of the main shaft.
Reciprocating saw according to the present invention, since balance weight can have larger stroke, even if using smaller quality
In the case of balance weight, good effectiveness in vibration suppression can be also obtained, and can subtract the weight saving of entire reciprocating saw, volume
It is small and compact-sized.
Description of the drawings
Fig. 1 is the stereogram of reciprocating saw according to the preferred embodiment of the invention, wherein, for the sake of clarity, eliminate past
The shell and saw blade sawed again；
Fig. 2 is the side view of reciprocating saw shown in Fig. 1, wherein, eliminate the baffle of reciprocating saw；
Fig. 3 is the exploded perspective view of reciprocating saw shown in Fig. 2；
Fig. 4 is the rough schematic view of the reciprocating saw according to the present invention when main axle moving most forward position；And
Fig. 5 is the rough schematic view of the reciprocating saw according to the present invention when the last side position of main axle moving.
Specific embodiment
With reference to example detailed description of the present invention preferred embodiment.It will be understood by those skilled in the art that these
Exemplary embodiment is not meant to form any restrictions to the present invention.
Fig. 1 is the stereogram of reciprocating saw according to the preferred embodiment of the invention, and Fig. 2 is the side view of reciprocating saw shown in Fig. 1,
Fig. 3 is the exploded perspective view of reciprocating saw shown in Fig. 2.For the sake of clarity, the shell and saw of reciprocating saw are eliminated in fig. 1-3
Piece also removes the baffle of reciprocating saw in Fig. 2-3.As illustrated in fig. 1 and 2, reciprocating saw 1 according to the preferred embodiment of the invention includes
Saw blade reciprocating motion driving mechanism 3 provides the motor 5 of power and for controlling electricity for saw blade reciprocating motion driving mechanism 3
The switch 7 of the operation of motivation 5.Preferably, reciprocating saw 1 according to the preferred embodiment of the invention, which further includes, is arranged on saw blade and back and forth transports
The baffle 9 of dynamic 3 front side of driving mechanism.When carrying out cutting operation, baffle 9 and cut material, so as to more
Reliable way is cut.
Fig. 3 is the exploded perspective view of reciprocating saw shown in Fig. 2.As shown in figure 3, reciprocating saw according to the preferred embodiment of the invention
1 saw blade reciprocating motion driving mechanism 3 includes 11 and second half shell 13 of first half-shell body, 11 and second half-shell of first half-shell body
Body 13 can be fixed together by the fastener 15 of such as screw.It is formed in 11 and second half shell 13 of first half-shell body
The first bevel gear 19 with the output axis connection of motor 5 is provided in housing 17, first bevel gear 19 is with being arranged on housing 17
Interior second bevel gear 21 engages.There are one cam pins 23 for setting in second bevel gear 21.One main shaft 25 is located at housing at it
One end in 17 be provided with the vertically extending slit 27 of its longitudinal axis (that is, vibration-direction), and extend to housing at it
One end except 17 is fixed with the saw blade clamping device 29 for clamping saw blade (not shown).Cam pin in second bevel gear 21
23 are accommodated in the slit 27 on main shaft 25.Preferably, 23 outside of cam pin is provided with sheath.Main shaft 25, which also extends through, to be fixed on
Guiding sleeve 31 on first half-shell body 11.The cross-sectional shape of guiding sleeve 31 preferably with the cross-sectional shape phase of main shaft 25
Together.Preferably, guiding sleeve 31 is fixed by clamping plate 33, and clamping plate 33 is locked into first half-shell body by screw 35
On 11.In this way, when motor 5 operation cause first bevel gear 19 and and then cause second bevel gear 21 rotate when, second cone tooth
23 driving spindle 25 of cam pin on wheel 21 is continuously moved back and forth along guiding sleeve 31.
Reciprocating saw 1 according to the preferred embodiment of the invention further includes the balance weight component for reducing saw blade vibration.Balance
Recombination part includes the balance weight connecting portion 39 being pivotally mounted on main shaft 25 by pivot 38, is connected to balance weight connecting portion
On 39 and the balance weight 41 that can be moved along the direction opposite with 25 moving direction of main shaft and fixed to first half-shell body 11
On rack 43.Balance weight connecting portion 39 includes sector gear 45 and the linking arm 47 integral with sector gear 45.Balance
The sector gear 45 of reconnection socket part 39 is engaged with fixed to the rack 43 on housing.Have on linking arm 47 and be spaced apart with pivot 38
The axis pin 49 of ground setting, axis pin 49 vertically extend with linking arm 47.Balance weight 41 includes being spaced apart generally along straight line
The first elongated slot 51 and the second elongated slot 53 and relative to the first elongated slot 51 and the second elongated slot of ground setting
53 vertically extending third elongated slots 55.Preferably, it is elongated to be located at the first elongated slot 51 and second for third elongated slot 55
Center between slit 53 and in the perpendicular direction relative between the first elongated slot 51 and the second elongated slot 53
At a certain distance.The first positioning pin 61 in the first mounting hole 57 being fixed in the second half shell 13 and it is fixed on the second half-shell
The second positioning pin 63 in the second mounting hole 59 on body 13 is each passed through the first elongated slot 51 and second in balance weight 41
Elongated slot 53, and make to put down by the round folder (not shown) for the lower end for being fixed to the first positioning pin 61 and the second positioning pin 63
Weight 41 is without departing from the first positioning pin 61 and the second positioning pin 63.At the same time, the axis pin 49 on linking arm 47 passes through balance
Weigh the third elongated slot 55 on 41.When 11 and second half shell 13 of first half-shell body is fixed together by fastener 15
When, the uper side surface 65 of clamping plate 33 can guide the downside surface of balance weight 41.Preferably, it after reciprocating saw assembling, puts down
Weight connecting portion 39 is around the pivot 38 that it is pivoted and the first elongated slot 51 and the second elongated slot 53 in balance weight 41
In on same straight line.It will be understood by those skilled in the art that balance weight connecting portion 39 is installed on first half-shell body 11, simultaneously
And it is also feasible that rack 43, which is installed on main shaft 25,.In this case, the first elongated slot 51 in balance weight 41,
The setting of two elongated slots 53 and third elongated slot 55 should be adjusted correspondingly.
The operational process of reciprocating saw according to the present invention is described below with reference to Fig. 4 and Fig. 5.
When operator's operating switch 7 runs motor 5, the first bevel gear on the output shaft of motor 5
19 rotate and the second bevel gear 21 engaged with first bevel gear 19 are driven to rotate, the bias being arranged in second bevel gear 21
Pin 23 is thus along circular motion and by main shaft 25 being caused to guide with the cooperation of slit 27 on one end of main shaft 25
Linear reciprocating motion under the guiding of casing 31.When main shaft 25 is transported along the direction (that is, forward direction) far from second bevel gear 21
When dynamic, the sector gear 45 of balance weight connecting portion 39 engaged with fixed to the rack 43 on housing revolves clockwise
Turn so that the axis pin 49 on the linking arm 47 integral with sector gear 45 drives balance weight 41 along the movement side with main shaft 25
(that is, backward directions) move in the opposite direction.The first elongated slot 51, the second elongated slot being arranged in balance weight 41
53 and third elongated slot 55 so that balance weight 41 has the freedom of motion along 25 longitudinal direction of main shaft.Such as Fig. 4 institutes
Show, when main shaft 25 moves to most front side along the direction far from second bevel gear 21, balance weight 41 is along the fortune with main shaft 25
Dynamic side moves side to the end in the opposite direction, to realize equilibrium function and play damping effect.
When main shaft 25 towards the direction of second bevel gear 21 (that is, backward directions) along moving, and fixed on housing
The sector gear 45 of balance weight connecting portion 39 that engages of rack 43 rotate counterclockwise so that with sector gear 45 into
Axis pin 49 on the linking arm 47 of one drives balance weight 41 along the direction opposite with the direction of motion of main shaft 25 (that is, forward
Direction) movement.As shown in figure 5, when main shaft 25 towards the direction of second bevel gear 21 along side to the end is moved, balance weight 41
Most front side is moved to along the direction opposite with the direction of motion of main shaft 25, to realize equilibrium function and play damping effect.
In the reciprocatory movement of main shaft 25, balance weight 41 plays damping effect always.Preferably, by selecting to balance
Suitable distance between axis pin 49 of the reconnection socket part 39 on the pivot 38 and linking arm 47 that it is pivoted so that when 25 edge of main shaft
When the direction far from second bevel gear 21 and moving to most front side, balance weight 41 is along the side opposite with the direction of motion of main shaft 25
To movement side and when main shaft 25 towards the direction of second bevel gear 21 along side to the end is moved to the end, balance weight 41
Most front side is moved to along the direction opposite with the direction of motion of main shaft 25, so as to fulfill maximum effectiveness in vibration suppression.
In reciprocating saw according to the present invention, when the main shaft 25 moves back and forth, pass through sector gear 45 and rack 43
Between engagement, linking arm 47 drive balance weight 41 moved along the direction opposite with 25 direction of motion of main shaft, balance weight 41
Stroke range can maximize, so as to realize better vibration damping effect in the case where the weight of balance weight 41 is relatively small
Fruit, so make the weight saving of entire reciprocating saw, volume reduce and it is compact-sized.
Above in association with specific embodiment to the present invention have been described in detail.Obviously, above description and show in the accompanying drawings
The embodiment gone out should be construed as illustratively, without being construed as limiting the invention.For example, the saw blade of reciprocating saw is reciprocal
Motion driving mechanism can not include first half-shell body and the second half shell, and first half-shell is installed in above preferred embodiment
Component on body and the second half shell can be mounted directly on the shell of reciprocating saw.To those skilled in the art, may be used
To carry out various variations or modifications to it without departing from the spirit of the invention, these variations or modifications are all without departing from this
The range of invention.
Claims (10)
1. a kind of reciprocating saw (1), including：
Saw blade reciprocating motion driving mechanism (3), the saw blade reciprocating motion driving mechanism (3) are mountable to thereon including saw blade
Main shaft (25)；
The motor (5) of power is provided for the saw blade reciprocating motion driving mechanism (3)；And
For reduce saw blade vibration balance weight component, the balance weight component include pivotable balance weight connecting portion (39),
Be connected on the balance weight connecting portion (39) and can be moved along the direction opposite with the main shaft (25) direction of motion
Balance weight (41)；
It is characterized in that, the balance weight connecting portion (39) is including sector gear (45) and with the sector gear (45) into one
The linking arm (47) of body, the balance weight component further includes the rack (43) engaged with the sector gear (45), as the master
When axis (25) moves back and forth, by engaging between the sector gear (45) and the rack (43), the linking arm (47)
The balance weight (41) is driven to be moved along the direction opposite with the main shaft (25) direction of motion.
2. reciprocating saw (1) according to claim 1, which is characterized in that the balance weight connecting portion (39) passes through pivot
(38) it is pivotally mounted on the main shaft (25), has on the linking arm (47) and set at interval with the pivot (38)
The axis pin (49) put, the axis pin (49) vertically extend with the linking arm (47), and the axis pin (49) drives the balance
Weight (41) is moved along the direction opposite with the main shaft (25) direction of motion.
3. reciprocating saw (1) according to claim 2, which is characterized in that between the pivot (38) and the axis pin (49)
Distance be chosen to so that when the main shaft (25) moves to most front side the balance weight (41) movement to the end side and
When the main shaft (25) movement side to the end, the balance weight (41) moves to most front side.
4. reciprocating saw (1) according to claim 2, which is characterized in that the balance weight (41) is including along straight line
The first elongated slot (51) and the second elongated slot (53) that set at interval and relative to first elongated slot
(51) it is positioned with the vertically extending third elongated slot (55) of second elongated slot (53), the first positioning pin (61) and second
Pin (63) is each passed through first elongated slot (51) and second elongated slot (53) and the axis pin (49) passes through
The third elongated slot (55).
5. reciprocating saw (1) according to claim 4, which is characterized in that the saw blade reciprocating motion driving mechanism (3) includes
First half-shell body (11) and the second half shell (13), the main shaft (25) is across being fixed on drawing on the first half-shell body (11)
Guide thimble (31), the rack (43) are fixed on the first half-shell body (11), first positioning pin (61) and described
Second positioning pin (63) is fixed on second half shell (13).
6. reciprocating saw (1) according to claim 4, which is characterized in that the third elongated slot (55) is positioned at described
Center between one elongated slot (51) and second elongated slot (53) and in vertical direction relative to described
First elongated slot (51) and second elongated slot (53) are spaced apart.
7. reciprocating saw (1) according to claim 4, which is characterized in that the pivot (38) and first elongated slot
(51) it is located along the same line with second elongated slot (53).
8. reciprocating saw (1) according to claim 5, which is characterized in that the guiding sleeve (31) passes through clamping plate (33)
It is fixed on the first half-shell body (11), the clamping plate (33) also plays guiding function to the balance weight (41).
9. reciprocating saw (1) according to claim 1, which is characterized in that the saw blade reciprocating motion driving mechanism (3) is also wrapped
It includes with the first bevel gear of the output axis connection of the motor (5) (19) and engages with the first bevel gear (19)
Second bevel gear (21) is provided with cam pin (23) on the second bevel gear (21), and the cam pin (23) is accommodated in institute
It states in the slit (27) extended with its longitudinal axis on the end of main shaft (25).
10. reciprocating saw (1) according to claim 9, which is characterized in that be provided on the other end of the main shaft (25)
For clamping the saw blade clamping device of saw blade (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400886.4A CN104416225B (en) | 2013-09-05 | 2013-09-05 | Reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310400886.4A CN104416225B (en) | 2013-09-05 | 2013-09-05 | Reciprocating saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104416225A CN104416225A (en) | 2015-03-18 |
| CN104416225B true CN104416225B (en) | 2018-06-26 |
Family
ID=52966962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310400886.4A Active CN104416225B (en) | 2013-09-05 | 2013-09-05 | Reciprocating saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104416225B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508869A (en) * | 2019-07-31 | 2019-11-29 | 浙江开创电气股份有限公司 | Reciprocating saw |
| US11958121B2 (en) | 2022-03-04 | 2024-04-16 | Black & Decker Inc. | Reciprocating tool having orbit function |
| US11839964B2 (en) | 2022-03-09 | 2023-12-12 | Black & Decker Inc. | Counterbalancing mechanism and power tool having same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181693A (en) * | 1985-09-27 | 1987-04-29 | Black & Decker Inc | Improvements in and relating to power tools |
| EP0561473B1 (en) * | 1992-03-18 | 1998-01-21 | S-B Power Tool Company | Counterbalanced orbital drive mechanism for saws and the like |
| CN1496772A (en) * | 2002-10-07 | 2004-05-19 | ������-�¿˶���˾ | Reciprocating-type saw |
| CN101244471A (en) * | 2007-02-13 | 2008-08-20 | 罗伯特·博世有限公司 | Linkage drive mechanism for a reciprocating tool |
| CN101596620A (en) * | 2008-06-05 | 2009-12-09 | 苏州宝时得电动工具有限公司 | Reciprocal cutting tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6568089B1 (en) * | 1999-06-04 | 2003-05-27 | Porter-Cable/Delta | Reciprocating saw having compact configuration and independent stability |
-
2013
- 2013-09-05 CN CN201310400886.4A patent/CN104416225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181693A (en) * | 1985-09-27 | 1987-04-29 | Black & Decker Inc | Improvements in and relating to power tools |
| EP0561473B1 (en) * | 1992-03-18 | 1998-01-21 | S-B Power Tool Company | Counterbalanced orbital drive mechanism for saws and the like |
| CN1496772A (en) * | 2002-10-07 | 2004-05-19 | ������-�¿˶���˾ | Reciprocating-type saw |
| CN101244471A (en) * | 2007-02-13 | 2008-08-20 | 罗伯特·博世有限公司 | Linkage drive mechanism for a reciprocating tool |
| CN101596620A (en) * | 2008-06-05 | 2009-12-09 | 苏州宝时得电动工具有限公司 | Reciprocal cutting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104416225A (en) | 2015-03-18 |
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