CN103100759A - Reciprocating saw - Google Patents
Reciprocating saw Download PDFInfo
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- CN103100759A CN103100759A CN2012105879302A CN201210587930A CN103100759A CN 103100759 A CN103100759 A CN 103100759A CN 2012105879302 A CN2012105879302 A CN 2012105879302A CN 201210587930 A CN201210587930 A CN 201210587930A CN 103100759 A CN103100759 A CN 103100759A
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- impact zone
- cutter
- reciprocating
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Abstract
The invention discloses a reciprocating saw which comprises a shell, a motor accommodated in the shell, a reciprocating rod, a working element, a clamping mechanism and a transmission mechanism, wherein the clamping mechanism is used for claming or releasing the working element and is placed at one end of the reciprocating rod, and the transmission mechanism changes rotational motion of the motor into reciprocating motion of the reciprocating rod, and comprises a track drive assembly connected with the reciprocating rod. The track drive assembly is operable and selectively drives the working element along a track locus, and comprises an eccentric part driving the reciprocating rod to conduct pivotal motion, wherein at least two protrusions driving the reciprocating rod to conduct pivotal motion are placed on the eccentric part. Because the at least two protrusions driving the reciprocating rod to conduct pivotal motion are placed on the eccentric part, and under the condition of identical rotating speeds, times of track-type motion of the working element can be increased, and therefore cutting efficiency is improved.
Description
Technical field
The present invention relates to a kind of reciprocating saw, be specifically related to a kind of reciprocating saw that operation element is made track type movement that drives.
Background technology
Reciprocating saw is used for the various article that the cutting different materials is made, for example metal tube, timber and plasterboard.This saw generally comprises a casing and a reciprocating lever that is arranged in casing, and reciprocating lever is used for for operation element reciprocating along the direction of the longitudinal axis that is parallel to this reciprocating lever.Motor rotatablely moves it by transmission mechanism and is delivered to reciprocating motion on reciprocating lever.In some reciprocating saws, different from straight reciprocating motion, operation element is made track type movement.The general characteristic of track type movement is, when the cutting stroke, when operation element forward reciprocating saw casing inside contracts back, operation element is (being cut direction) motion forward, and when backstroke, stretch from the reciprocating saw casing when operation element from the time, operation element corresponding backward (be cut direction oppositely) motion.Result is that the path of operation element is tortuous or track.It is believed that this orbital motion is because driving operation element incision workpiece and being pulled away from operation element in backstroke, raising cutting efficiency that can be suitable from workpiece in the cutting stroke.
These reciprocating saws are achieved in the following way.The rear end of reciprocating lever is by being connected with cam face on swing pinion, revolve in the process that turns around at cam face, cam face has a high point and a low spot, and at height point place, the drive operation element travels forward thereby the rear end of driving reciprocating lever moves upward; At the low spot place, thereby moving downward the drive operation element, the rear end of driving reciprocating lever moves backward.
Yet these reciprocating saws revolve at cam face all can only carry out one time track type movement in the process that turns around, and it is limited that its cutting efficiency is enhanced.In order better to improve cutting efficiency, be necessary these reciprocating saws are improved.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of reciprocating saw of better raising cutting efficiency.
In order to realize described target, the present invention adopts following technical scheme: a kind of reciprocating saw comprises: a housing; A motor that is contained in housing; A reciprocating lever; An operation element; A clamping or discharge described operation element and be arranged on the clamp mechanism of reciprocating lever one end; A transmission mechanism, this transmission mechanism converts rotatablely moving of motor to the reciprocating motion of reciprocating lever, this transmission mechanism also comprises a track drive assembly that is connected with reciprocating lever, it can operate and drive selectively operation element along a track track, this track drive assembly comprises that drives the eccentric part that reciprocating lever is made pivoting action, wherein, be provided with at least two on described eccentric part and drive the protuberance that reciprocating lever is made pivoting action.Drive by being provided with at least two the protuberance that reciprocating lever is made pivoting action, can in the situation that rotating speed be identical, improve operation element and make the number of times of track type movement, thereby improve cutting efficiency.
Further, transmission mechanism also comprises the jackshaft that is driven rotation by motor, and eccentric part is along forming protuberance on the axial direction of jackshaft, perhaps along forming protuberance on the axial direction of jackshaft.
Further, eccentric part comprises: circular center wheel disc and the peripheral rim that is used for reciprocal cutter lifting, puts cutter that is positioned at center wheel disc excircle; The axis direction of parallel center wheel disc is as short transverse, is horizontal plane perpendicular to the plane of the axis of center wheel disc; Peripheral rim is at being projected as of the horizontal plane annulus coaxial with the center wheel disc, the upper surface of peripheral rim is formed with between a plurality of impact zones, be formed with a cutter lifting position and one between an impact zone and put cutter spacing, cutter lifting position and put highest point and the lowest part of cutter spacing in being respectively between impact zone changes along circumferencial direction continuously in cutter lifting position and the height value of putting the upper surface of the peripheral rim between cutter spacing.
Further, the cutter lifting position height value between impact zone is all identical, and the height value of putting cutter spacing between all impact zones is all identical.
Further, comprise between impact zone: only and have between adjacent impact zone between the first kind impact zone of a cutter lifting position; Only and between adjacent impact zone between the total same Equations of The Second Kind impact zone of putting cutter spacing; Have respectively the cutter lifting position between the impact zone adjacent with both sides and put between the 3rd class impact zone of cutter spacing.
Further, the upper surface of peripheral rim is formed with the smoothing interval that highly remains unchanged, the height of smoothing interval and cutter lifting position or to put the height of cutter spacing identical.
Further, also comprise between impact zone: cutter lifting position and put cutter spacing all and between the 4th class impact zone that joins of smoothing interval.
Number between impact zone is 4 further, be respectively between the first impact zone, between the second impact zone, between the 3rd impact zone, between the 4th impact zone, be between first kind impact zone between the first impact zone, between the second impact zone, be between the 3rd class impact zone between the 3rd impact zone, be between first kind impact zone between the 4th impact zone; Have a cutter lifting position between the first impact zone and between the second impact zone, have one between the second impact zone and between the 3rd impact zone and put cutter spacing, have a cutter lifting position between the 3rd impact zone and between the 4th impact zone; The number of smoothing interval is 1, respectively and the cutter spacing of putting between the first impact zone, between the 4th impact zone join.
Further, between the first impact zone, occupy quadrant between the second impact zone on the circumferencial direction of peripheral rim, accounting for four between the 3rd impact zone, between the 4th impact zone on the circumferencial direction of peripheral rim has/circumference, and remainder is smoothing interval.
Description of drawings
Fig. 1 is the schematic perspective view of the reciprocating saw of the first embodiment of the present invention;
Fig. 2 is the cutaway view of the reciprocating saw after removal housing in Fig. 1;
Fig. 3 is the floor map of the eccentric part in Fig. 1;
Fig. 4 is the schematic diagram of the reciprocating saw of the second embodiment of the present invention;
Fig. 5 is the floor map of the eccentric part in Fig. 4.
The implication of Reference numeral in figure:
1,1 ' reciprocating saw, 10 housings, 11, casing, 110, rear handle, 12, transmission housing, 120, front handlebar, 20 motors, 30,30 ' reciprocating lever, 31, sliding tray, 32,32 ' support set, 40, operation element, 50, clamp mechanism, 60, transmission mechanism, 61, bevel pinion, 62,62 ' jackshaft, 63,63 ' bevel gear wheel, 64, cam, 70, track drive assembly, 71,71 ' eccentric part, 710,710 ' center wheel disc, 711,711 ' peripheral rim, 712, through hole.
Between A, the first impact zone, between B, the second impact zone, between C, the 3rd impact zone, between D, the 4th impact zone, E, smoothing interval; H1, H2 cutter lifting position, L1, L2, L3 are put cutter spacing.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done concrete introduction.
See figures.1.and.2, a reciprocating saw 1 of the first embodiment of the present invention comprises a housing 10; A motor 20 that is contained in housing 10; A reciprocating lever 30; An operation element 40, this operation element 40 can be saw blade, file and blade etc.; Clamping or discharge operation element 40 and be arranged on the clamp mechanism 50 of reciprocating lever 30 1 ends, this clamp mechanism 50 can realize clamping or release operation element 40 for need not aid, also can be for just realizing clamping by aid or discharging operation element 40; A transmission mechanism 60, this transmission mechanism 60 converts rotatablely moving of motor 20 to the reciprocating motion of reciprocating lever 30, this transmission mechanism 60 also comprises a track drive assembly 70 that is connected with reciprocating lever 30, and it can operate and drive selectively operation element 40 along a track track.
With reference to Fig. 4, a reciprocating saw 1 ' of the second embodiment of the present invention, different from the first embodiment is, its bevel gear wheel 63 ' is arranged on the jackshaft 62 ' of paper direction inside and outside, eccentric part 71 ' is being provided with at least two protuberances in the radial direction towards jackshaft 62 ' axis, the protuberance of eccentric part 71 ' is with the support set 32 ' of reciprocating lever 30 ' or directly contact with reciprocating lever 30 ', revolve in the process that turns around at eccentric part 71 ', operation element has been realized at least twice track type movement.
With further reference to Fig. 3 and Fig. 5, illustrated the eccentric part 71 of reciprocating saw 1 of two embodiment of the present invention, it comprises: center wheel disc 710 and peripheral rim 711, wherein peripheral rim 711 is positioned at the excircle of center wheel disc 710.Center wheel disc 710 is circular, be mainly used in being connected with driving shaft so that whole eccentric part 71 along with driving shaft take the axis of center wheel disc 710 as the rotating shaft pivotable.Peripheral rim 711 is used for realizing reciprocal cutter lifting and putting cutter.
As preferably, center wheel disc 710 centers are provided with a plurality of through holes 712 and overall concave is sunk into below peripheral rim 711 upper surface minimum points.It is unbalanced at circumferencial direction that the effect of through hole 712 is to make up just the rise and fall quality that causes of peripheral rim 711 upper surfaces.
With the direction that is parallel to center wheel disc 710 axis as short transverse, be horizontal plane (being drawing shown in Figure 1) perpendicular to the plane in the axis of center wheel disc 710, peripheral rim 711 is at the annulus that is projected as of horizontal plane, and this annulus and center wheel disc 710 have common axis.That is to say, go from the direction of overlooking, the upper surface of peripheral rim 711 is an annulus coaxial with center wheel disc 710.
Be formed with cutter lifting position H1, a H2 and one between an impact zone and put cutter spacing L1, L2, L3, cutter lifting position H1, H2 and put cutter spacing L1, L2, L3 highest point and the lowest part in being respectively between impact zone, and change continuously along circumferencial direction at cutter lifting position H1, H2 and the height value of putting the upper surface of the peripheral rim between cutter spacing L1, L2, L3.Particularly be exactly when aiming at cutter lifting position H1, H2 when you the upper surface of peripheral rim 711 the highest, when eccentric part rotates, you are aimed at is between this impact zone by cutter lifting position H1, H2 when putting cutter spacing L1, L2, L3 convergence, continuous variation occurs in the height value of the upper surface that you aim at along with rotation, and vice versa.
In concrete instrument, often each cycle wishes that the amplitude of attachment realization action is consistent, and cutter lifting position H1, H2 and the height of putting cutter spacing L1, L2, L3 have namely determined the movement range of attachment, so as a kind of preferred version, cutter lifting position H1 between all impact zones, H2 height value are all identical, and the height value of putting cutter spacing L1, L2, L3 between all impact zones is all identical.
In order to realize multiple action, comprise between impact zone: only and have between adjacent impact zone between the first kind impact zone of cutter lifting position H1, a H2; Only and between adjacent impact zone between the total same Equations of The Second Kind impact zone of putting cutter spacing L1, L2, L3; Have respectively cutter lifting position H1, H2 between the impact zone adjacent with both sides and put between the 3rd class impact zone of cutter spacing L1, L2, L3.
In order to realize putting cutter-cutter lifting-put the continuous process of cutter, can complete such process between two adjacent first kind impact zones between first kind impact zone.
In order to realize cutter lifting-put the continuous process of cutter-cutter lifting, can complete such process between two adjacent Equations of The Second Kind impact zones between the Equations of The Second Kind impact zone.
Between the 3rd class impact zone in order to realize continuous cutter-cutter lifting-put process of cutter-cutter lifting of putting,
In addition, when being formed with the smoothing interval E that highly remains unchanged, the upper surface of peripheral rim 711 also has between four class impact zones cutter lifting position H1, the H2 between the 4th class impact zone and put cutter spacing L1, L2, L3 and all join with smoothing interval.The height of smoothing interval and cutter lifting position H1, H2 or to put the height of cutter spacing L1, L2, L3 identical.
As a kind of preferred version, the number between impact zone is 4, is respectively A between the first impact zone, second and impacts between interval B, the 3rd impact zone D between C, the 4th impact zone, and the number of smoothing interval E is 1.
Between the first impact zone, A and the second impact interval B have cutter lifting position H1, a H2, between the second impact interval B and the 3rd impact zone, C has one and puts cutter spacing L1, L2, L3, between the 3rd impact zone between C and the 4th impact zone D have cutter lifting position H1, a H2, smoothing interval E respectively and between the first impact zone between A, the 4th impact zone D put cutter spacing L1, L2, L3 joins.More specifically, between the first impact zone, A, the second impact interval B are occupied quadrant on the circumferencial direction of peripheral rim 711, between the 3rd impact zone between C, the 4th impact zone D account for four have/circumference on the circumferencial direction of peripheral rim 711, remainder is smoothing interval E.In addition in order to realize on all four repetitive process, between the first impact zone between A and the 3rd impact zone C shared circumference ratio also identical.
So, combination between these four impact zones can realize cutter lifting-put cutter-cutter lifting-put continuous action of cutter, if this smoothing interval E is as altitude datum, that is to say that the plane at upper surface place of peripheral rim 711 in smoothing interval E is as datum plane, when peripheral rim 711 pivots circle, can realize benchmark-cutter lifting-put cutter-cutter lifting-put impact process of cutter-benchmark.
Can find out that between the first impact zone, A is between first kind impact zone, between the second impact interval B, the 3rd impact zone, C is between the 3rd class impact zone, and between the 4th impact zone, D is between first kind impact zone.We can realize by other combination how concrete impact process.
Shown in seeing figures.1.and.2, need to prove that here the dullness between impact zone increases or dull the reduction, refer to along the circumferential direction, and radial direction be do not have vicissitudinous, not only for one for peripheral rim 711 upper surface close contacts but also the contact that can move up and down, no matter its at the subpoint of horizontal plane on any one circle of the annulus of peripheral rim 711, its by cutter lifting position H1, H2 to putting cutter spacing L1, L2, L3(or conversely) process in, the variation of contact height value is the same.That is to say, for same circumferential position, height value can not change along with the variation of radial position, in order to realize this point, as a kind of preferred version, cutter lifting position H1, H2 and the concrete form of putting cutter spacing L1, L2, L3 are crest line that is parallel to horizontal plane in the upper surface of peripheral rim 711, the projection of this crest line in horizontal plane can be by above-mentioned peripheral rim 711 after extending the center (center of circle) of annulus projection, crest line as cutter lifting position H1, H2 is called the cutter lifting crest line, is called as the crest line of putting cutter spacing L1, L2, L3 and puts the cutter crest line.
Above demonstration and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (10)
1. a reciprocating saw, comprising: a housing; It is characterized in that, also comprise: a motor that is contained in housing; A reciprocating lever; An operation element; A clamping or discharge described operation element and be arranged on the clamp mechanism of described reciprocating lever one end; A transmission mechanism, described transmission mechanism converts rotatablely moving of described motor to the reciprocating motion of described reciprocating lever, described transmission mechanism also comprises a track drive assembly that drives operation element along a track track, it is connected with described reciprocating lever, described track drive assembly comprises an eccentric part, and described eccentric part is provided with at least two and drives the protuberance that described reciprocating lever is made pivoting action.
2. reciprocating saw according to claim 1, is characterized in that, described transmission mechanism also comprises the jackshaft that is driven rotation by motor, and described eccentric part is along forming described protuberance on the axial direction of described jackshaft.
3. reciprocating saw according to claim 1, is characterized in that, described transmission mechanism also comprises the jackshaft that is driven rotation by motor, and described eccentric part forms described protuberance in the radial direction along described jackshaft.
4. reciprocating saw according to claim 1, is characterized in that, described eccentric part comprises: circular center wheel disc and the peripheral rim that is used for reciprocal cutter lifting, puts cutter that is positioned at center wheel disc excircle; The axis direction of parallel described center wheel disc is as short transverse, is horizontal plane perpendicular to the plane of the axis of described center wheel disc; Described peripheral rim is at being projected as of the horizontal plane annulus coaxial with described center wheel disc, the upper surface of described peripheral rim is formed with between a plurality of impact zones, be formed with a cutter lifting position and one between a described impact zone and put cutter spacing, described cutter lifting position and put highest point and the lowest part of cutter spacing in being respectively between described impact zone changes along circumferencial direction continuously in described cutter lifting position and the height value of putting the upper surface of the described peripheral rim between cutter spacing.
5. reciprocating saw according to claim 4, is characterized in that, the cutter lifting position height value between all described impact zones is all identical, and the height value of putting cutter spacing between all described impact zones is all identical.
6. reciprocating saw according to claim 5, is characterized in that, comprises between described impact zone: only and have between adjacent impact zone between the first kind impact zone of a described cutter lifting position; Only and between adjacent impact zone between the total same described Equations of The Second Kind impact zone of putting cutter spacing; Have respectively described cutter lifting position between the impact zone adjacent with both sides and put between the 3rd class impact zone of cutter spacing.
7. reciprocating saw according to claim 6, is characterized in that, the upper surface of described peripheral rim is formed with the smoothing interval that highly remains unchanged, the height of described smoothing interval and described cutter lifting position or to put the height of cutter spacing identical.
8. reciprocating saw according to claim 7, is characterized in that, also comprises between described impact zone: described cutter lifting position and put cutter spacing all and between the 4th class impact zone that joins of described smoothing interval.
9. reciprocating saw according to claim 8, it is characterized in that, number between described impact zone is 4, be respectively between the first impact zone, between the second impact zone, between the 3rd impact zone, between the 4th impact zone, be between first kind impact zone between described the first impact zone, between the second impact zone, be between the 3rd class impact zone between the 3rd impact zone, be between first kind impact zone between the 4th impact zone; Have a cutter lifting position between described the first impact zone and between the second impact zone, between described the second impact zone and have one between the 3rd impact zone and put cutter spacing, have a cutter lifting position between described the 3rd impact zone and between the 4th impact zone; The number of described smoothing interval is 1, respectively and the cutter spacing of putting between described the first impact zone, between the 4th impact zone join.
10. reciprocating saw according to claim 9, it is characterized in that, between described the first impact zone, occupy quadrant between the second impact zone on the circumferencial direction of peripheral rim, accounting for four between described the 3rd impact zone, between the 4th impact zone on the circumferencial direction of peripheral rim has/circumference, and remainder is described smoothing interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587930.2A CN103100759B (en) | 2012-12-29 | 2012-12-29 | Reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587930.2A CN103100759B (en) | 2012-12-29 | 2012-12-29 | Reciprocating saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103100759A true CN103100759A (en) | 2013-05-15 |
| CN103100759B CN103100759B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210587930.2A Expired - Fee Related CN103100759B (en) | 2012-12-29 | 2012-12-29 | Reciprocating saw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105230368A (en) * | 2015-11-02 | 2016-01-13 | 国网山东省电力公司电力科学研究院 | Branch removal tool for live working robot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2234032A (en) * | 1989-07-11 | 1991-01-23 | Black & Decker Inc | Drive mechanism for converting rotary motion into reciprocating linear motion |
| US20050126018A1 (en) * | 2003-12-11 | 2005-06-16 | Guenter Haas | Drive for a motor-driven hand-held tool |
| CN201211579Y (en) * | 2008-06-18 | 2009-03-25 | 苏州宝时得电动工具有限公司 | Reciprocating cutting tool |
| CN101602125A (en) * | 2008-06-15 | 2009-12-16 | 苏州宝时得电动工具有限公司 | Reciprocating saw |
| CN202556373U (en) * | 2012-03-21 | 2012-11-28 | 南京德朔实业有限公司 | Reciprocating electric tool balancing mechanism |
| CN203221247U (en) * | 2012-12-29 | 2013-10-02 | 南京德朔实业有限公司 | Reciprocating saw |
-
2012
- 2012-12-29 CN CN201210587930.2A patent/CN103100759B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2234032A (en) * | 1989-07-11 | 1991-01-23 | Black & Decker Inc | Drive mechanism for converting rotary motion into reciprocating linear motion |
| US20050126018A1 (en) * | 2003-12-11 | 2005-06-16 | Guenter Haas | Drive for a motor-driven hand-held tool |
| CN101602125A (en) * | 2008-06-15 | 2009-12-16 | 苏州宝时得电动工具有限公司 | Reciprocating saw |
| CN201211579Y (en) * | 2008-06-18 | 2009-03-25 | 苏州宝时得电动工具有限公司 | Reciprocating cutting tool |
| CN202556373U (en) * | 2012-03-21 | 2012-11-28 | 南京德朔实业有限公司 | Reciprocating electric tool balancing mechanism |
| CN203221247U (en) * | 2012-12-29 | 2013-10-02 | 南京德朔实业有限公司 | Reciprocating saw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105230368A (en) * | 2015-11-02 | 2016-01-13 | 国网山东省电力公司电力科学研究院 | Branch removal tool for live working robot |
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| CN103100759B (en) | 2015-11-25 |
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