CN101602124A - Reciprocating power tool - Google Patents
Reciprocating power tool Download PDFInfo
- Publication number
- CN101602124A CN101602124A CNA2008101232941A CN200810123294A CN101602124A CN 101602124 A CN101602124 A CN 101602124A CN A2008101232941 A CNA2008101232941 A CN A2008101232941A CN 200810123294 A CN200810123294 A CN 200810123294A CN 101602124 A CN101602124 A CN 101602124A
- Authority
- CN
- China
- Prior art keywords
- balance weight
- reciprocating
- eccentric
- reciprocating lever
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A kind of reciprocating power tool, comprise the housing (1) that is provided with along longitudinally, be arranged on the motor (2) in the housing, perpendicular to longitudinally setting and the main shaft (3) that drives by motor, the eccentric shaft that is connected with spindle eccentricity (32), and driven by eccentric shaft and the reciprocating lever (4) that moves reciprocatingly along longitudinally, wherein, the top of main shaft is formed with eccentric block (7), this eccentric block and eccentric shaft are 180 degree phase place settings and connect as one by a junction (33), this connecting portion (33) is supported by a balance weight (6), this balance weight is provided with through hole (61), described eccentric block is housed in this through hole, the both sides of this balance weight are extended with sidewall (62 towards the direction of reciprocating lever, 63), the center of gravity of described balance weight (6) is positioned between described reciprocating lever (4) and the described eccentric block (7), thereby it is minimum that the vibration that whole reciprocator is produced reduces to, the operator is more comfortable in use, and improves cutting accuracy and life tools.
Description
Technical field
The present invention relates to a kind of reciprocating power tool, relate to a kind of balanced controls of reciprocating power tool in particular.
Background technology
Reciprocating saw is one of common reciprocating power tool, according to its kind of drive, generally comprises two kinds of drive mechanisms, and a kind of is the oscillating rod type transmission mechanism, and another kind is the eccentric wheel type transmission mechanism.
Adopt the reciprocating saw of eccentric wheel type transmission mechanism, generally include the housing that extends along longitudinally, be arranged on motor in the housing, perpendicular to longitudinally setting and the main shaft that drives by motor, with main shaft by eccentric eccentric shaft that is connected of connecting portion and the reciprocating lever that moved reciprocatingly by the eccentric shaft driving, this reciprocating lever drive saw blade mounted thereto carries out reciprocal cutting action.
Adopt the reciprocating saw of oscillating rod type transmission mechanism, generally include housing, be arranged on motor in the housing, along the fork that connects on longitudinally setting and the jackshaft that drives by motor, this jackshaft and be movably connected in reciprocating lever on the fork along the longitudinally setting.When motor drives the jackshaft rotation, be connected fork on the jackshaft and will drive reciprocating lever and move reciprocatingly, and then make the saw blade that is installed on the reciprocating lever carry out reciprocal cutting action.
In the above-mentioned kind of drive, when reciprocating lever moves back and forth, reciprocating lever all will produce bigger vibration, so that influence cutting accuracy, and cause operator's hand fiber crops easily, and feel tired.So, in reciprocating saw, usually balanced controls can be set; feel because of the numb feel that vibration is brought to reduce reciprocating lever; common balanced controls are balance weight, and this balance weight moves along the opposite direction of the direction of motion of reciprocating lever usually, to suppress reciprocal vibration of bar.
U.S. bulletin patent US 5555626 has disclosed a kind of balanced controls that adopted in the oscillating rod type reciprocating saw, it is at the opposite side of fork with respect to reciprocating lever, extend and be provided with an end, and connect and drive a balance weight that is arranged on housing bottom by this end and slide, like this, fork can also move along the reciprocating direction in contrast to reciprocating lever by the driven equilibrium piece driving the process while that reciprocating lever moves back and forth, and then can eliminate the vibration sense that is brought by the reciprocating lever motion.But the balance weight in the reciprocating saw of this employing oscillating rod type is owing to being arranged on housing bottom, and is far apart with the center of gravity of reciprocating lever, poor for whole reciprocator counterbalance effect, can not play the effect of vibration damping well.Therefore, disclosed along the two side ends of balance weight in this patent and extended upward pair of sidewalls, this balance weight has been opened from its cross section presented U type structure, the center of gravity that such structure can make balance weight is moved on gradually, if sidewall is upwardly extending high more, then the amplitude of moving on the center of gravity is big more.When center of gravity approached the center of gravity of reciprocating lever, the counterbalance effect that this balance weight produced was good more.
But adopting the reciprocating saw of this U type balance weight is the oscillating rod type reciprocating saw, and not can solve the vibration problem of reciprocating lever in the eccentric wheel type reciprocating saw.Therefore, be necessary the balanced controls of eccentric wheel type reciprocating saw are further improved.
Summary of the invention
The object of the present invention is to provide a kind of reciprocating power tool that adopts eccentric wheel type reciprocator, the balanced controls of this instrument can reduce reciprocating lever effectively and move back and forth the vibration that brings.
For achieving the above object, the invention provides a kind of reciprocating power tool, comprise the housing that is provided with along longitudinally, be arranged on the motor in the housing, perpendicular to longitudinally setting and the main shaft that drives by motor, the eccentric shaft that is connected with spindle eccentricity, and driven by eccentric shaft and the reciprocating lever that moves reciprocatingly along longitudinally, wherein, the top of main shaft is formed with eccentric block, this eccentric block and eccentric shaft are 180 degree phase place settings and connect as one by a junction, this connecting portion is supported by a balance weight, this balance weight is provided with through hole, described eccentric block is housed in this through hole, the both sides of this balance weight are extended with sidewall towards the direction of reciprocating lever, and the center of gravity that makes described balance weight is between described reciprocating lever and described eccentric block.
Adopt in such a way, in the reciprocating motion process of reciprocating lever, balance weight also produce to slide thereupon, and center of gravity is all the time near the center of gravity of reciprocating lever, thereby has reduced the vibration when reciprocating lever moves reciprocatingly, and helps operator's operation.
Description of drawings
Fig. 1 for reciprocating power tool of the present invention cutaway view;
Fig. 2 be among Fig. 1 along A to zoomed-in view;
Wherein, the related elements reference numeral is listed as follows:
The 1-housing; The 2-motor; The 21-motor drive shaft; The 3-main shaft; The 31-bevel gear; The 32-eccentric shaft; The 33-connecting portion; The 4-reciprocating lever; The 41-groove; The 5-saw blade; The 6-balance weight; The 61-through hole; 62,63-sidewall; The 7-eccentric block.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the present invention is described in further detail.
See also Fig. 1, the invention discloses a kind of reciprocating power tool, in a preferred embodiment, this reciprocating power tool is a reciprocating saw.This reciprocating saw comprises the housing 1 that extends along longitudinally, and this housing 1 definition has the rear and front end, and as shown in Figure 1, the right side is a front end, and the left side is the rear end.Rear end at housing 1 is provided with motor 2 along longitudinally equally, the motor drive shaft 21 output rotation torques of this motor 2; Front end at housing 1 is provided with main shaft 3 perpendicular to longitudinally, and is fixedly connected with bevel gear 31 on main shaft 3, and this bevel gear 31 connects with motor drive shaft 21 engagements, thereby the rotation torque of motor drive shaft 21 is passed to main shaft 3.The top of this main shaft 3 is formed with an eccentric block 7, and be 180 degree phase places with this eccentric block 7, be parallel to this main shaft 3 and be provided with an eccentric shaft 32, connect as one by a connecting portion 33 between this eccentric block 7 and the eccentric shaft 32, connect thereby make eccentric shaft 32 be eccentric with respect to main shaft 3.In addition, connect along groove 41 activities on the reciprocating lever 4 of longitudinally setting in the other end of this eccentric shaft 32 and the housing 1.Thereby when main shaft 3 is rotated, this eccentric shaft 32 will be done eccentric rotation along with the rotation of main shaft 3, and drive reciprocating lever 4 further and move reciprocatingly along longitudinally, make the saw blade 5 that is installed on the reciprocating lever 4 carry out reciprocal cutting action.
This connecting portion 33 is a tabular, and it is parallel to longitudinally, is supported by a balance weight 6 that is arranged in the housing 1, and this balance weight 6 also is tabular, and dual-side is connected with housing 1 slidably, thereby can slide along longitudinally.Be formed with through hole 61 on balance weight 6, be used to accommodate eccentric block 7, that is to say, eccentric block 7 forms end face with balance weight 6 and is connected.Adopt in such a way, when main shaft 3 is rotated, because eccentric block 7 will be done eccentric rotation along with main shaft 3, this eccentric block 7 slides along longitudinally by the end-acted balance weight 6 that will drive with balance weight 6, simultaneously, the eccentric shaft 32 that has 180 degree phase differences with eccentric block 7 will slide in the other direction, promptly when eccentric shaft 32 is positioned at the front end of housing 1, balance weight 6 will slide into the rear end of housing 1, relatively, when eccentric shaft 32 is positioned at the rear end of housing 1, balance weight 6 will slide into the front end of housing 1, thereby can be effectively the reciprocating motion of reciprocating lever 4 be produced balance, suppress the effect of vibration.
See also Fig. 2, because the balance weight 6 here is arranged on the below of connecting portion 33, itself and reciprocating lever 4 have a segment distance H in vertical direction, therefore, the center of gravity of the center of gravity of this balance weight 6 and reciprocating lever 4 is not positioned on the same horizontal plane, thereby damping effect is unsatisfactory.For this reason, this balance weight 6 extends upward two side 62,63 along its two side ends perpendicular to longitudinally, makes this balance weight 6 be U type shape from its cross section.Adopt in such a way, can be with the center of gravity A of original flat balance weight along being promoted to center of gravity B place perpendicular to longitudinally, and further near the center of gravity C of reciprocating lever 4, under perfect condition, if center of gravity B and C overlap, then the balancing damping best results of balance weight 6.But in actual applications, the center of gravity B of balance weight 6 is accomplished to overlap and be not easy with the center of gravity C of reciprocating lever 4, therefore, in the present invention, the center of gravity B of described balance weight 6 is between reciprocating lever 4 and eccentric block 7.
In the reciprocating motion process of reciprocating lever, balance weight also produce to slide thereupon, and center of gravity is all the time near the center of gravity of reciprocating lever, thereby has reduced the vibration when reciprocating lever moves reciprocatingly, and helps operator's operation.
Claims (1)
1, a kind of reciprocating power tool, comprise the housing (1) that is provided with along longitudinally, be arranged on the motor (2) in the housing, perpendicular to longitudinally setting and the main shaft (3) that drives by motor, the eccentric shaft that is connected with spindle eccentricity (32), and driven by eccentric shaft and the reciprocating lever (4) that moves reciprocatingly along longitudinally, wherein, the top of main shaft is formed with eccentric block (7), this eccentric block and eccentric shaft are 180 degree phase place settings and connect as one by a junction (33), this connecting portion (33) is supported by a balance weight (6), this balance weight is provided with through hole (61), described eccentric block is housed in this through hole, it is characterized in that: the both sides of this balance weight are extended with sidewall (62 towards the direction of reciprocating lever, 63), the center of gravity of described balance weight (6) is positioned between described reciprocating lever (4) and the described eccentric block (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810123294.1A CN101602124B (en) | 2008-06-15 | 2008-06-15 | Reciprocating power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810123294.1A CN101602124B (en) | 2008-06-15 | 2008-06-15 | Reciprocating power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101602124A true CN101602124A (en) | 2009-12-16 |
| CN101602124B CN101602124B (en) | 2014-02-26 |
Family
ID=41468097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810123294.1A Active CN101602124B (en) | 2008-06-15 | 2008-06-15 | Reciprocating power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101602124B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430808A (en) * | 2011-12-09 | 2012-05-02 | 宁波捷美进出口有限公司 | Micro-vibration hand saw |
| CN104139379A (en) * | 2013-05-09 | 2014-11-12 | 株式会社牧田 | Reciprocating cutting tool |
| CN105014751A (en) * | 2015-06-03 | 2015-11-04 | 朱德金 | Rotating-shaft high-torsion-resistance wood cutting machine |
| CN107838880A (en) * | 2016-09-21 | 2018-03-27 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN110238799A (en) * | 2018-03-07 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Electric hammer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2181693B (en) * | 1985-09-27 | 1989-05-10 | Black & Decker Inc | Improvements in and relating to power tools |
| US5079844A (en) * | 1990-11-13 | 1992-01-14 | Milwaukee Electric Tool Corporation | Counterbalanced reciprocating mechanism |
| US5555626A (en) * | 1995-11-27 | 1996-09-17 | S-B Power Tool Company | Reciprocating drive mechanism |
| CN2671742Y (en) * | 2004-01-12 | 2005-01-19 | 苏州宝时得电动工具有限公司 | Bias reciprocating mechanism of electric knife and saw |
| CN201217102Y (en) * | 2008-06-18 | 2009-04-08 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
-
2008
- 2008-06-15 CN CN200810123294.1A patent/CN101602124B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430808A (en) * | 2011-12-09 | 2012-05-02 | 宁波捷美进出口有限公司 | Micro-vibration hand saw |
| CN102430808B (en) * | 2011-12-09 | 2016-01-20 | 宁波捷美进出口有限公司 | Micro-vibration hand saw |
| CN104139379A (en) * | 2013-05-09 | 2014-11-12 | 株式会社牧田 | Reciprocating cutting tool |
| CN104139379B (en) * | 2013-05-09 | 2016-06-29 | 株式会社牧田 | Reciprocating cutting tool |
| CN105014751A (en) * | 2015-06-03 | 2015-11-04 | 朱德金 | Rotating-shaft high-torsion-resistance wood cutting machine |
| CN107838880A (en) * | 2016-09-21 | 2018-03-27 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN107838880B (en) * | 2016-09-21 | 2023-11-07 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN110238799A (en) * | 2018-03-07 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Electric hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101602124B (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201217102Y (en) | Reciprocating power tool | |
| US5025562A (en) | Counterbalanced reciprocating mechanism | |
| CN106457544B (en) | Percussion tool | |
| EP1832394B1 (en) | Impact tool with vibration control mechanism | |
| US7526868B2 (en) | Power tool with vibration reduction | |
| CN101602124B (en) | Reciprocating power tool | |
| CN109843525B (en) | Hand-held power tool | |
| CN102019609B (en) | Swing power tool | |
| CN101909815B (en) | Motor-driven machine tool | |
| US9227290B2 (en) | Power-driven hand tool | |
| EP2644304B1 (en) | A portable power-driven saw | |
| CN201511357U (en) | Swing power tool | |
| CN102303168A (en) | Saw blade and straight saw component | |
| CN201295796Y (en) | Reciprocating saw | |
| US4998353A (en) | Reciprocating tool | |
| CN203664824U (en) | Reciprocating saw | |
| JP2012218082A (en) | Power tool | |
| US9833850B2 (en) | Hand-held power tool drive device | |
| CN2910442Y (en) | Multipurpose swing saw | |
| CN102303165A (en) | Saw power tool | |
| CN106424933B (en) | Reciprocating saw | |
| CN104416225A (en) | Reciprocating saw | |
| CN201442185U (en) | Transmission mechanism of shaper | |
| CN208450726U (en) | A kind of cutter lifting structure of sweep-saw | |
| CN207387575U (en) | Multifunctional electric hammer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |