CN105328265A - Jigsaw - Google Patents
Jigsaw Download PDFInfo
- Publication number
- CN105328265A CN105328265A CN201410245821.1A CN201410245821A CN105328265A CN 105328265 A CN105328265 A CN 105328265A CN 201410245821 A CN201410245821 A CN 201410245821A CN 105328265 A CN105328265 A CN 105328265A
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- Prior art keywords
- gear
- bearing
- sweep
- saw according
- chute
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Abstract
The invention discloses a jigsaw. The jigsaw comprises a machine case, a drive motor, a reciprocating lever and a transmission mechanism. The drive motor is provided with an output shaft. The transmission mechanism comprises a first gear and a second gear, wherein the first gear is arranged coaxial with the output shaft, and the second gear is meshed with the first gear. The machine case is fixedly provided with a fixed shaft, the fixed shaft is provided with a bearing, and the second gear is arranged on the bearing. The fixed shaft is provided with a step part which extends in the axial direction and is used for locating the bearing and the second gear, the second gear is provided with a fixed part, the reciprocating lever is provided with a sliding assembly, one end of the fixed part is matched with the sliding assembly, and the fixed part can do reciprocating motion on the sliding assembly. According to the jigsaw, the step part extends in the axial direction of the fixed shaft and can stop the bearing and the second gear in the operation process of the jigsaw so as to protect the bearing and the second gear against axial movement, the abrasion rate between the fixed shaft and the second gear is lowered, and therefore the service life of the jigsaw is prolonged.
Description
Technical field
The present invention relates to field of power tools, particularly relate to a kind of sweep-saw.
Background technology
Sweep-saw is one of important cutting tool of field of power tools, traditional sweep-saw comprises casing, be contained in the drive motors in casing and the transmission mechanism for being moved by the convert rotational motion cast-cutting saw slice of drive motors, traditional transmission mechanism has at least one group of gear, gear usually can be arranged in rotating shaft and carry out transmission, under normal circumstances, this drive mechanism can produce larger axial float due to gear location shakiness, and then the rate of wear can accelerated between rotating shaft and gear, thus the service life of influence curve saw, sweep-saw also can be caused when more serious to lose efficacy.
Summary of the invention
Based on this, be necessary for the problems referred to above, provide one can reduce gear axial float, improve the sweep-saw in electric tool service life.
A kind of sweep-saw, comprising:
Casing;
Drive motors, be contained in described casing, described drive motors is provided with output shaft;
Reciprocating lever, drives cast-cutting saw slice to move back and forth relative to described casing; And,
Transmission mechanism, for by the convert rotational motion of described drive motors being the reciprocating motion of described reciprocating lever;
Described transmission mechanism comprises the first gear coaxially arranged with described output shaft and the second gear be meshed with described first gear; Described casing is installed with fixed axis, described fixed axis is provided with bearing, described second gear is located on described bearing, described fixed axis is provided with and axially extends and stage portion for locating described bearing and described second gear, described second gear is provided with fixture, described reciprocating lever is provided with slide assemblies, and the merging that matches of one end of described fixture and described slide assemblies can move back and forth on described slide assemblies.
Wherein in an embodiment, described bearing is needle bearing.
Wherein in an embodiment, interference fit between described fixed axis and described bearing, interference fit between described bearing and described second gear.
Wherein in an embodiment, between described second gear and described fixture, non-coaxial is arranged.
Wherein in an embodiment, described slide assemblies is provided with chute, and described chute is that kidney-shaped is poroid and perpendicular to the reciprocating direction of described reciprocating lever, one end and the described chute of described fixture match.
Wherein in an embodiment, described second gear is provided with groove, and described fixture comprises the pole be located on described groove and the roller be fixed on described pole, and what described roller can slide is arranged in described chute.
Wherein in an embodiment, matched in clearance between described roller and described chute.
Wherein in an embodiment, described fixed axis is also provided with shaft block ring between described stage portion and described bearing.
Wherein in an embodiment, described slide assemblies has first surface, described second gear has the second surface relative with described first surface, the spacing between described first surface and described second surface is 0.5mm-2mm.
Wherein in an embodiment, be installed with radiator fan in described casing, described radiator fan wears described output shaft and between described drive motors and described transmission mechanism.
The transmission mechanism of above-mentioned sweep-saw comprises the first gear coaxially arranged with output shaft and the second gear be meshed with the first gear.Casing is installed with fixed axis, and on fixed axis, circle is provided with bearing and the second gear successively.Wherein, fixed axis is axially extended with the stage portion for location bearing.Bearing and the second gear can block by above-mentioned stage portion in the process of sweep-saw running, to prevent it from producing axial float, reduce the rate of wear between fixed axis and the second gear, thus improve the service life of sweep-saw.
Accompanying drawing explanation
Fig. 1 is the sectional view of sweep-saw;
Fig. 2 is the sectional view of sweep-saw;
Fig. 3 is A place partial structurtes enlarged drawing in Fig. 1.
Wherein, concrete element reference numeral is listed as follows:
100, sweep-saw 110, casing 111, fixed axis
112, stage portion 120, drive motors 121, output shaft
130, reciprocating lever 131, slide assemblies 1311, chute
1312, first surface 140, transmission mechanism 141, first gear
142, the second gear 1421, groove 1422, second surface
143, fixture 1431, pole 1432, slide block
144, bearing 150, radiator fan 160, support
Detailed description of the invention
Please refer to the drawing 1 and Fig. 2, present embodiment discloses a kind of sweep-saw 100, and this sweep-saw 100 comprises casing 110, the drive motors 120 be contained in casing 110, reciprocating lever 130, cast-cutting saw slice (not shown), transmission mechanism 140 and radiator fan 150.Be installed with support 160 in casing 110, transmission mechanism 140 is fixed on support 160.Wherein, drive motors 120 is extended with output shaft 121, one end of reciprocating lever 130 is extended by casing 110, and one end that cast-cutting saw slice extends casing 110 with reciprocating lever 130 is fixedly connected with.Transmission mechanism 140 is connected between drive motors 120 and reciprocating lever 130, and can be the alternating translational movement of reciprocating lever 130 by the convert rotational motion of drive motors 120.In addition, be also installed with radiator fan 150 in casing 110, radiator fan 150 wears output shaft 121 and between drive motors 120 and transmission mechanism 140.
Please refer to the drawing 3 is the partial structurtes enlarged drawing at A place in Fig. 1.Transmission mechanism 140 comprises coaxial the first gear 141, second gear 142, fixture 143 and the bearing 144 arranged with output shaft 121.Wherein, the first gear 141 is meshed with the second gear 142, and the second gear 142 is provided with fixture 143, and and between fixture 143 non-coaxial arrange.Reciprocating lever 130 is provided with slide assemblies 131, one end of fixture 143 can be connected in slide assemblies 131 and can under the effect of drive motors 120 on slide assemblies 131 alternating translational movement.Slide assemblies 131 is provided with chute 1311, and chute 1311 is poroid and perpendicular to the reciprocating direction of reciprocating lever 130 in kidney-shaped.Matched in clearance between one end of fixture 143 and chute 1311.In preferred embodiment, the surface contacted between chute 1311 with fixture 143 is smooth surface, thus is convenient to fixture 143 expedite translational motion in chute 1311 under the driving force effect of drive motors 120.
Above-mentioned sweep-saw 100 in use, drive motors 120 driver output axle 121 moves, and drive the first gear 141 provided thereon to rotate, the second gear 142 engaged with the first gear 141 produces rotary motion simultaneously, the fixture 143 be arranged on the second gear 142 to be connected in slide assemblies 131 and can under the effect of drive motors 120 in chute 1311 alternating translational movement, now reciprocating lever 130 drives cast-cutting saw slice relative to casing 110 alternating translational movement.
The flank of tooth of the second gear 142 is provided with groove 1421, and fixture 143 comprises the pole 1431 be located on groove 1421 and the slide block 1432 be fixed on pole 1431, and above-mentioned slide block 1432 can match with chute 1311.In present embodiment, slide block 1432 is the roller matched with chute 1311, roller 1432 is preferably the pulley of smooth outer surface, and pulley to be arranged in chute 1311 and can to contact with chute 1311 smooth surface, thus reduce further pulley and chute 1311 and slide and hinder.It is pointed out that above-mentioned slide block 1432 structure is not limit, as long as the function that can meet its translational motion in chute 1311 is all within protection scope of the present invention.In other embodiments, one-body molded manufacture between fixture 143 and the second gear 142.
Casing 110 is installed with fixed axis 111, above-mentioned fixed axis 111 is fixedly connected with support 160.On fixed axis 111, circle is provided with bearing 144 and the second gear 142 successively.The use of bearing 144 can play effect that is fixing and reduction load coefficient of friction in mechanical transmission course, namely, when the second gear 142 produces vibration on fixed axis 111, bearing 144 can play and reduce the fixing effect of coefficient of friction in power transmission process and retainer shaft center.Wherein, interference fit between fixed axis 111 and bearing, interference fit between bearing and the second gear 142, thus the axial float problem of the second gear 142 in rotation process can be avoided.In present embodiment, bearing 144 is preferably needle bearing.Needle bearing is a kind of bearing with cylinder needle roller, this bearing has higher load-taking capacity, because needle bearing is equipped with thin and long needle roller, therefore its radial structure is compact, while the load that carrying is identical with the bearing of other type, needle bearing is specially adapted to the restricted supporting structure of radial installation dimension.
The use of needle bearing can reduce the installing space of casing 110, and play effect that is fixing and reduction load coefficient of friction, but the second gear 142 is in the process of Long-Time Service, the vibration that capital generation is more or less small, now needle bearing can depart from original orbit and run out of fixed axis 111, and likely causes whole transmission mechanism 140 to lose efficacy.In order to avoid the generation of the problems referred to above, fixed axis 111 is provided with and axially extends and for the stage portion 112 of location bearing 144, the needle roller in roller bearing can block by stage portion 112, thus can guarantee the normal operation of needle bearing.In preferred embodiment, fixed axis 111 is topped bar between portion 112 and bearing 144 and is also provided with shaft block ring (not shown) for cushioning the axial vibration between stage portion 112 and needle bearing.
In addition, slide assemblies 131 has first surface 1312, the second gear 142 has the second surface 1422 relative with first surface 1312, the spacing d between first surface 1312 and second surface 1422 is less and can remain between 0.5mm-2mm.First surface 1312 can limit the second gear 142 and move axially distance, thus can limit the axial float of the second gear 142 further.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a sweep-saw, comprising:
Casing;
Drive motors, be contained in described casing, described drive motors is provided with output shaft;
Reciprocating lever, drives cast-cutting saw slice to move back and forth relative to described casing; And,
Transmission mechanism, for by the convert rotational motion of described drive motors being the reciprocating motion of described reciprocating lever;
It is characterized in that: described transmission mechanism comprises the first gear coaxially arranged with described output shaft and the second gear be meshed with described first gear; Described casing is installed with fixed axis, described fixed axis is provided with bearing, described second gear is located on described bearing, described fixed axis is provided with and axially extends and stage portion for locating described bearing and described second gear, described second gear is provided with fixture, described reciprocating lever is provided with slide assemblies, and the merging that matches of one end of described fixture and described slide assemblies can move back and forth on described slide assemblies.
2. sweep-saw according to claim 1, is characterized in that, described bearing is needle bearing.
3. sweep-saw according to claim 1, is characterized in that, interference fit between described fixed axis and described bearing, interference fit between described bearing and described second gear.
4. sweep-saw according to claim 1 and 2, is characterized in that, between described second gear and described fixture, non-coaxial is arranged.
5. sweep-saw according to claim 1 and 2, is characterized in that, described slide assemblies is provided with chute, and described chute is that kidney-shaped is poroid and perpendicular to the reciprocating direction of described reciprocating lever, one end and the described chute of described fixture match.
6. sweep-saw according to claim 5, is characterized in that, described second gear is provided with groove, and described fixture comprises the pole be located on described groove and the roller be fixed on described pole, and what described roller can slide is arranged in described chute.
7. sweep-saw according to claim 6, is characterized in that, matched in clearance between described roller and described chute.
8. sweep-saw according to claim 1, is characterized in that, described fixed axis is also provided with shaft block ring between described stage portion and described bearing.
9. sweep-saw according to claim 1, it is characterized in that, described slide assemblies has first surface, described second gear has the second surface relative with described first surface, the spacing between described first surface and described second surface is 0.5mm-2mm.
10. sweep-saw according to claim 1, is characterized in that, is installed with radiator fan in described casing, and described radiator fan wears described output shaft and between described drive motors and described transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245821.1A CN105328265A (en) | 2014-06-04 | 2014-06-04 | Jigsaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245821.1A CN105328265A (en) | 2014-06-04 | 2014-06-04 | Jigsaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105328265A true CN105328265A (en) | 2016-02-17 |
Family
ID=55279139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410245821.1A Pending CN105328265A (en) | 2014-06-04 | 2014-06-04 | Jigsaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105328265A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124198A1 (en) * | 1983-02-07 | 1984-11-07 | Skil Nederland B.V. | Adjustable orbital reciprocating saw |
| CN2413829Y (en) * | 2000-01-11 | 2001-01-10 | 杭州东方实业有限公司 | Hand carried sweep-saw |
| CN1481288A (en) * | 2000-10-18 | 2004-03-10 | 斯基尔欧洲有限公司 | Jigsaw comprising stiff bearing for saw moving mechanism |
| CN101284320A (en) * | 2007-04-13 | 2008-10-15 | 苏州宝时得电动工具有限公司 | Reciprocating cutting 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 |
| JP4477988B2 (en) * | 2004-10-29 | 2010-06-09 | リョービ株式会社 | Electric tool |
| CN102076452A (en) * | 2008-06-26 | 2011-05-25 | 罗伯特·博世有限公司 | Handheld jigsaw |
| CN102211328A (en) * | 2010-04-12 | 2011-10-12 | 株式会社牧田 | Reciprocating cutting tools |
| CN203900622U (en) * | 2014-06-04 | 2014-10-29 | 宝时得机械（张家港）有限公司 | Scroll saw |
-
2014
- 2014-06-04 CN CN201410245821.1A patent/CN105328265A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0124198A1 (en) * | 1983-02-07 | 1984-11-07 | Skil Nederland B.V. | Adjustable orbital reciprocating saw |
| CN2413829Y (en) * | 2000-01-11 | 2001-01-10 | 杭州东方实业有限公司 | Hand carried sweep-saw |
| CN1481288A (en) * | 2000-10-18 | 2004-03-10 | 斯基尔欧洲有限公司 | Jigsaw comprising stiff bearing for saw moving mechanism |
| JP4477988B2 (en) * | 2004-10-29 | 2010-06-09 | リョービ株式会社 | Electric tool |
| CN101284320A (en) * | 2007-04-13 | 2008-10-15 | 苏州宝时得电动工具有限公司 | Reciprocating cutting 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 |
| CN102076452A (en) * | 2008-06-26 | 2011-05-25 | 罗伯特·博世有限公司 | Handheld jigsaw |
| CN102211328A (en) * | 2010-04-12 | 2011-10-12 | 株式会社牧田 | Reciprocating cutting tools |
| CN203900622U (en) * | 2014-06-04 | 2014-10-29 | 宝时得机械（张家港）有限公司 | Scroll saw |
Non-Patent Citations (1)
| Title |
|---|
| "《机械设计基础》" * |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |
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| RJ01 | Rejection of invention patent application after publication |