CN203900622U - Scroll saw - Google Patents
Scroll saw Download PDFInfo
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- CN203900622U CN203900622U CN201420293520.1U CN201420293520U CN203900622U CN 203900622 U CN203900622 U CN 203900622U CN 201420293520 U CN201420293520 U CN 201420293520U CN 203900622 U CN203900622 U CN 203900622U
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- gear
- bearing
- sweep
- saw according
- saw
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Abstract
The utility model discloses a scroll saw which comprises a machine shell, a driving motor, a reciprocating rod and a transmission mechanism. An output shaft is arranged on the driving motor, and the transmission mechanism comprises a first gear and a second gear, wherein the first gear and the output shaft are coaxially arranged, and the second gear is meshed with the first gear. A fixed shaft is fixedly arranged on the machine shell, a bearing is arranged on the fixed shaft, and the second gear is arranged on the bearing. The fixed shaft is provided with a stepped part which extends in the axial direction and used for positioning the bearing and the second gear, and a fixing part is arranged on the second gear. A sliding assembly is arranged on the reciprocating rod, and one end of the fixing part is matched with the sliding assembly and can reciprocate on the sliding assembly. According to the scroll saw, the stepped part extends in the axial direction of the fixed shaft and can block the bearing and the second gear in the operation process of the scroll saw so that axial movement can be prevented from being generated; the speed of abrasion between the fixed shaft and the second gear is decreased, so that the service life of the scroll saw is prolonged.
Description
Technical field
The utility model relates to field of power tools, particularly relates 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 drive motors and the transmission mechanism for the conversion cast-cutting saw slice that rotatablely moves of drive motors is moved in casing, traditional transmission mechanism has at least one group of gear, gear conventionally can be arranged on and in rotating shaft, carry out transmission, generally, this drive mechanism can produce larger axial float due to gear location shakiness, and then can accelerate the rate of wear between rotating shaft and gear, thereby the service life of influence curve saw, in more serious situation, also can cause sweep-saw to lose efficacy.
Utility model content
Based on this, be necessary for the problems referred to above, provide a kind of and can reduce gear axial float, improve the electric tool sweep-saw in service life.
A sweep-saw, comprising:
Casing;
Drive motors, is contained in described casing, and described drive motors is provided with output shaft;
Reciprocating lever, drives cast-cutting saw slice to move back and forth with respect to described casing; And,
Transmission mechanism, for being converted into rotatablely moving of described drive motors the reciprocating motion of described reciprocating lever;
Described transmission mechanism comprises and the first gear of the coaxial setting of described output shaft and the second gear being meshed with described the first gear; On described casing, be installed with fixed axis, described fixed axis is provided with bearing, described the second gear is located on described bearing, described fixed axis is provided with and extends axially and for locating the stage portion of described bearing and described the second gear, described the second gear is provided with fixture, described reciprocating lever is provided with slide assemblies, and one end of described fixture and described slide assemblies match and merge and can on described slide assemblies, move back and forth.
In an embodiment, described bearing is needle bearing therein.
Therein in an embodiment, interference fit between described fixed axis and described bearing, interference fit between described bearing and described the second gear.
Therein in an embodiment, non-coaxial setting between described the second gear and described fixture.
In an embodiment, described slide assemblies is provided with chute therein, and described chute is that kidney-shaped is poroid and perpendicular to the reciprocating direction of described reciprocating lever, one end of described fixture and described chute match.
In an embodiment, described the second gear is provided with groove therein, and described fixture comprises to be located at the pole on described groove and to be fixed on the roller on described pole, and what described roller can slide is arranged in described chute.
Therein in an embodiment, matched in clearance between described roller and described chute.
In an embodiment, between the above stage portion of described fixed axis and described bearing, be also provided with shaft block ring therein.
In an embodiment, on described slide assemblies, have first surface therein, have the second surface relative with described first surface on described the second gear, the spacing between described first surface and described second surface is 0.5mm-2mm.
In an embodiment, in described casing, be installed with radiator fan therein, 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 and the first gear of the coaxial setting of output shaft and the second gear being meshed with the first gear.On casing, be installed with fixed axis, on fixed axis, circle is provided with bearing and the second gear successively.Wherein, on fixed axis, extend axially the stage portion that is useful on location bearing.Above-mentioned stage portion can be blocked bearing and the second gear in the process of sweep-saw running, to prevent that it from producing axial float, reduces the rate of wear between fixed axis and the second gear, thereby improves the service life of sweep-saw.
Accompanying drawing explanation
Fig. 1 is the cutaway view of sweep-saw;
Fig. 2 is the cutaway 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, the 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
The specific embodiment
Please refer to the drawing 1 and Fig. 2, present embodiment has disclosed a kind of sweep-saw 100, and this sweep-saw 100 comprises casing 110, is contained in drive motors 120, reciprocating lever 130, cast-cutting saw slice (not shown), transmission mechanism 140 and radiator fan 150 in casing 110.In casing 110, be installed with support 160, transmission mechanism 140 is fixed on support 160.Wherein, be extended with output shaft 121 on drive motors 120, one end of reciprocating lever 130 is extended by casing 110, and cast-cutting saw slice is fixedly connected with one end that reciprocating lever 130 extends casing 110.Transmission mechanism 140 is connected between drive motors 120 and reciprocating lever 130, and rotatablely moving of drive motors 120 can be converted into the reciprocal translational motion of reciprocating lever 130.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 the first gear 141, the second gear 142, fixture 143 and the bearing 144 with the coaxial setting of 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 with fixture 143 between non-coaxial setting.Reciprocating lever 130 is provided with slide assemblies 131, and one end of fixture 143 can be connected to also can back and forth translational motion on slide assemblies 131 under the effect of drive motors 120 in slide assemblies 131.Slide assemblies 131 is provided with chute 1311, and it is poroid and perpendicular to the reciprocating direction of reciprocating lever 130 that chute 1311 is kidney-shaped.Matched in clearance between one end of fixture 143 and chute 1311.In preferred embodiment, the surface contacting between chute 1311 and fixture 143 is smooth surface, thus be convenient to fixture 143 under the driving force effect of drive motors 120 in the interior expedite translational motion of chute 1311.
Above-mentioned sweep-saw 100 in use, drive motors 120 driver output axle 121 motions, and drive the first gear 141 provided thereon to rotate, produce and rotatablely move simultaneously with the second gear 142 of the first gear 141 engagements, be arranged on that fixture 143 on the second gear 142 is connected in slide assemblies 131 and can be in the interior reciprocal translational motion of chute 1311 under the effect of drive motors 120, now reciprocating lever 130 drives cast-cutting saw slices with respect to the reciprocal translational motion of casing 110.
The flank of tooth of the second gear 142 is provided with groove 1421, and fixture 143 comprises the pole 1431 of being located on groove 1421 and be fixed on the slide block 1432 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 is arranged in chute 1311 and can contacts with chute 1311 smooth surfaces, thereby has further reduced pulley and chute 1311 slip obstructions.It is pointed out that above-mentioned slide block 1432 structures do not limit, so long as can meet its function in chute 1311 interior translational motions all within protection domain of the present utility model.In other embodiments, one-body molded manufacture between fixture 143 and the second gear 142.
On casing 110, be 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 be played the effect of fixing and reducing load coefficient of friction in mechanical transmission course, when the second gear 142 produces vibration on fixed axis 111, bearing 144 can play the fixing effect of coefficient of friction and retainer shaft center reducing in power transmission process.Wherein, interference fit between fixed axis 111 and bearing, interference fit between bearing and the second gear 142, thus can avoid the axial float problem of the second gear 142 in rotation process.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-bearing ability, because needle bearing is equipped with the needle roller of carefully growing, therefore its radial structure is compact, in the carrying load identical with the bearing of other type, needle bearing is specially adapted to the radially restricted supporting structure of installation dimension.
The use of needle bearing can reduce the installing space of casing 110, and play fixing and reduce the effect of load coefficient of friction, but the second gear 142 is in the long-term process of using, the small vibration of capital generation more or less, 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.For fear of the generation of the problems referred to above, fixed axis 111 is provided with and extends axially and for the stage portion 112 of location bearing 144, stage portion 112 can be blocked the needle roller in roller bearing, thereby can guarantee the normal operation of needle bearing.In preferred embodiment, fixed axis 111 is topped bar and is also provided with shaft block ring (not shown) for cushioning the axial vibration between stage portion 112 and needle bearing between portion 112 and bearing 144.
In addition, have on first surface 1312, the second gears 142 and have the second surface 1422 relative with first surface 1312 on slide assemblies 131, 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, thereby can further limit the axial float of the second gear 142.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a sweep-saw, comprising:
Casing;
Drive motors, is contained in described casing, and described drive motors is provided with output shaft;
Reciprocating lever, drives cast-cutting saw slice to move back and forth with respect to described casing; And,
Transmission mechanism, for being converted into rotatablely moving of described drive motors the reciprocating motion of described reciprocating lever;
It is characterized in that: described transmission mechanism comprises and the first gear of the coaxial setting of described output shaft and the second gear being meshed with described the first gear; On described casing, be installed with fixed axis, described fixed axis is provided with bearing, described the second gear is located on described bearing, described fixed axis is provided with and extends axially and for locating the stage portion of described bearing and described the second gear, described the second gear is provided with fixture, described reciprocating lever is provided with slide assemblies, and one end of described fixture and described slide assemblies match and merge and can on described slide assemblies, move back and forth.
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 the second gear.
4. sweep-saw according to claim 1 and 2, is characterized in that, non-coaxial setting between described the second gear and described fixture.
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 of described fixture and described chute match.
6. sweep-saw according to claim 5, is characterized in that, described the second gear is provided with groove, and described fixture comprises to be located at the pole on described groove and to be fixed on the roller 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, between the above stage portion of described fixed axis and described bearing, is also provided with shaft block ring.
9. sweep-saw according to claim 1, it is characterized in that, on described slide assemblies, have first surface, have the second surface relative with described first surface on described the second gear, 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, in described casing, is installed with radiator fan, 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 |
|---|---|---|---|
| CN201420293520.1U CN203900622U (en) | 2014-06-04 | 2014-06-04 | Scroll saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293520.1U CN203900622U (en) | 2014-06-04 | 2014-06-04 | Scroll saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203900622U true CN203900622U (en) | 2014-10-29 |
Family
ID=51774913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420293520.1U Active CN203900622U (en) | 2014-06-04 | 2014-06-04 | Scroll saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203900622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328265A (en) * | 2014-06-04 | 2016-02-17 | 宝时得机械（张家港）有限公司 | Jigsaw |
-
2014
- 2014-06-04 CN CN201420293520.1U patent/CN203900622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328265A (en) * | 2014-06-04 | 2016-02-17 | 宝时得机械（张家港）有限公司 | Jigsaw |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |