CN101328968A - Speed change gear box of electric tool - Google Patents
Speed change gear box of electric tool Download PDFInfo
- Publication number
- CN101328968A CN101328968A CNA2008100230154A CN200810023015A CN101328968A CN 101328968 A CN101328968 A CN 101328968A CN A2008100230154 A CNA2008100230154 A CN A2008100230154A CN 200810023015 A CN200810023015 A CN 200810023015A CN 101328968 A CN101328968 A CN 101328968A
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- gear
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- splined shaft
- electric tool
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Abstract
The invention relates to an electric tool, in particular to a speed change gear box of the electric tool. According to the technical proposal provided by the invention, a front gear box body is connected with a back gear box body; a motor is arranged outside the back gear box body; a splined shaft is arranged in the back gear box body, and is provided with a section of an outer splined shaft slot; an output shaft is arranged in the front gear box; and the output shaft is provided with an output gear. The invention is characterized in that: the right side of the splined shaft is provided with a fraction gear and an input gear, wherein, the input gear is closely matched with the splined shaft; the fraction gear and the splined shaft are in sliding fit and can relatively rotate. The speed change gear box can output different speeds according to different operating requirements, so that an operator can operate the speed change gear box conveniently.
Description
Technical field
The present invention relates to a kind of electric tool, specifically a kind of speed-change gear box of electric tool.
Background technique
When reality is used, for the cutting end face that guarantees to be cut timber is smooth, need utilize top gear work usually, utilize higher cutting speed, guarantee that the cutting end face of timber is smooth smooth; When cutting thick timber and cutting steel plate, wish again when bottom gear is worked, so that produce maximum output torque, obtain powerful cutting force.But,, therefore brought very big inconvenience to the user because traditional electric circular saw has only a kind of speed.
Summary of the invention
The objective of the invention is to design a kind of speed-change gear box of electric tool, this gear-box can be selected output different rotating speed and moment of torsion according to different usage requirements, and the operator is used more easily.
According to technological scheme provided by the invention, splined shaft 9 and output shaft 1 are installed in casing; At the fixedly connected input gear 10 of an end of splined shaft 9, the other end be slidingly connected built-up gear 11 and carrier gear 14, built-up gear 11 and 14 of carrier gears be provided for control combination gear 11 and carrier gear 14 mutually from the clutch part that closes, in gear housing, be provided for driving the axially movable clutch 13 of built-up gear 11 along splined shaft 9; Output gear 4 is arranged, described carrier gear 14 and output gear 4 engagements on output shaft 1.
One section external splines is set on splined shaft 9; The inner spline groove that can cooperate with the external splines groove of splined shaft 9 is set in the axis hole of carrier gear 14; Outer surface is provided with the external splines groove on the right side of carrier gear 14, the inner spline groove that can match with the external splines groove of carrier gear 14 the inner left wall setting of built-up gear 11; When built-up gear 11 moved on to right positions, the inner spline groove on the carrier gear 14 cooperated with external splines groove on the splined shaft 9, and power directly passes to output gear 4 through carrier gear 14 by splined shaft 9; When built-up gear 11 moves on to leftward position, inner spline groove on the carrier gear 14 separates with external splines groove on the splined shaft 9, external splines groove on the carrier gear 14 cooperates with the inner spline groove of built-up gear 11, power passes to carrier gear 14 by built-up gear 11, transmits output gear 4 by carrier gear 14 again.
Right side at carrier gear 14 is provided with end face clutch, and the end face clutch that can fit with end face clutch on carrier gear 14 right sides is set in the left side of built-up gear 11.Output terminal at motor 6 is provided with duplex motor gear 18, and described duplex motor gear 18 meshes with built-up gear 11 and input gear 10 simultaneously.On gear housing, be provided for stirring the gear knob 12 of clutch 13.Brake component 3 is set on output shaft 1.Described gear housing comprises front gear casing 17 and backgear casing 8, and described output shaft 1 is installed in the front gear casing 17, and described splined shaft 9 is installed in the backgear casing 8, in the outside of backgear casing 8 motor 6 is installed.
In described clutch part, right side at carrier gear 14 is provided with end face clutch, the end face clutch that can fit with the end face clutch on carrier gear 14 right sides is set in the left side of built-up gear 11, is provided for promoting the Returnning spring 15 that carrier gear 14 moves right in the left side of carrier gear 14.
Advantage of the present invention is: after using structure of the present invention, can make instrument that big torsion slow-speed of revolution output and high-revolving two kinds of selections are arranged, be applicable to the two-speed gear case that a kind of electric circular saw instrument of processing is used on the unlike material purposes.When top gear work cutting timber, make the smooth surface of cutting, and certain cutting speed is arranged, when bottom gear is worked, can produce maximum output torque, make that when cutting thick timber and cutting steel plate powerful cutting force is arranged.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Embodiment
As shown in the figure: on front gear casing 17, connect backgear casing 8, motor 6 is installed in outside at backgear casing 8, splined shaft 9 is set in backgear casing 8, one section external splines groove is set on splined shaft 9, output shaft 1 is installed in front gear casing 17, output gear 4 is set on output shaft 1, it is characterized in that: built-up gear 11 and input gear 10 are set on the right side of splined shaft 9, described input gear 10 is that close-fitting is fixing with splined shaft 9, the axis hole of built-up gear 11 and splined shaft 9 be Spielpassung can slide relative; Built-up gear 11 can move axially on splined shaft 9, when moving to leftward position, the inner spline groove of built-up gear 11 cooperates with external splines groove on the carrier gear 14, the inner spline groove of carrier gear 14 separates with external splines groove on the splined shaft 9, and the external splines groove on the carrier gear 14 cooperates with the inner spline groove of built-up gear 11; When moving to position, the right side, external splines groove on the inner spline groove of built-up gear 11 and the carrier gear 14 is thrown off, carrier gear 14 is cooperating with external splines on the splined shaft 9 under the effect of spring 15, at this moment imports gear 10 and carrier gear 14 and be the equal of one.
Right side at carrier gear 14 is provided with end face clutch, and the end face clutch that can fit with end face clutch on carrier gear 14 right sides is set in the left side of built-up gear 11; In front gear casing 17, be provided for the clutch 13 of mobile built-up gear 11; When built-up gear 11 moved on to position, the left side, the end face clutch of the end face clutch of carrier gear 14 right sides and built-up gear 11 left sides was fitted.
Output terminal at motor 6 is provided with duplex motor gear 18, and described duplex motor gear 18 meshes with built-up gear 11 and input gear 10 simultaneously.On backgear casing 8, be provided for stirring the gear knob 12 of clutch 13.Brake component 3 is set on output shaft 1.
During work, motor 6 drives duplex motor gear 18 and rotates, duplex motor gear 18 drives input gear 10 and built-up gear 11 rotations on the splined shaft 9 simultaneously, when 12 dozens of gear knobs during at top gear, built-up gear 11 dallies on splined shaft 9, input gear 10 drives splined shaft 9 and rotates, carrier gear 14 is under the effect of preloading spring 15, make the internal spline of carrier gear 14 engage with external splines on the splined shaft 9, make carrier gear 14 rotate and drive output shaft gear 4 work, produce high speed rotating.The input output speed ratio is 5.33: 1
When 12 dozens of gear knobs during at bottom gear, built-up gear 11 direction toward carrier gear 14 under the promotion of clutch 13 moves, and engage with end face clutch on the carrier gear 14 by the end face clutch on the built-up gear 11, splined hole with carrier gear 14 separates with splined shaft 9 simultaneously, make input gear 10 and splined shaft 9 idle running, drive carrier gear 14 by built-up gear 11 and rotate this moment, drive output shaft gear 4 work by carrier gear 14 again, produce low speed rotation, the speed ratio of input output is 12.34: 1.
Claims (8)
1, the speed-change gear box of electric tool comprises gear housing and is installed on casing interior splined shaft (9) and output shaft (1); At the fixedly connected input gear of an end of splined shaft (9) (10), the other end be slidingly connected built-up gear (11) and carrier gear (14), between built-up gear (11) and carrier gear (14), be provided for control combination gear (11) and carrier gear (14) mutually from the clutch part that closes, in gear housing, be provided for driving the axially movable clutch (13) of built-up gear (11) along splined shaft (9); Output gear (4) is arranged, described carrier gear (14) and output gear (4) engagement on output shaft (1).
2, the speed-change gear box of electric tool as claimed in claim 1 is characterized in that: one section external splines is set on splined shaft (9); The inner spline groove that can cooperate with the external splines groove of splined shaft (9) is set in the axis hole of carrier gear (14); Right side outer surface at carrier gear (14) is provided with the external splines groove, the inner spline groove that can match with the external splines groove of carrier gear (14) the inner left wall setting of built-up gear (11); At built-up gear (11) when moving on to right positions, the inner spline groove on the carrier gear (14) cooperates with external splines groove on the splined shaft (9), and power directly passes to output gear (4) through carrier gear (14) by splined shaft (9); At built-up gear (11) when moving on to leftward position, inner spline groove on the carrier gear (14) separates with external splines groove on the splined shaft (9), external splines groove on the carrier gear (14) cooperates with the inner spline groove of built-up gear (11), power passes to carrier gear (14) by built-up gear (11), transmits output gear (4) by carrier gear (14) again.
3, the speed-change gear box of electric tool as claimed in claim 1, it is characterized in that: the right side at carrier gear (14) is provided with end face clutch, and the end face clutch that can fit with end face clutch on carrier gear (14) right side is set in the left side of built-up gear (11).
4, the speed-change gear box of electric tool as claimed in claim 1 is characterized in that: the output terminal at motor (6) is provided with duplex motor gear (18), and described duplex motor gear (18) meshes with built-up gear (11) and input gear (10) simultaneously.
5, the speed-change gear box of electric tool as claimed in claim 3 is characterized in that: the gear knob (12) that is provided for stirring clutch (13) on gear housing.
6, the speed-change gear box of electric tool as claimed in claim 1 is characterized in that: brake component (3) is set on output shaft (1).
7, the speed-change gear box of electric tool as claimed in claim 1, it is characterized in that: described gear housing comprises front gear casing (17) and backgear casing (8), described output shaft (1) is installed in the front gear casing (17), described splined shaft (9) is installed in the backgear casing (8), in the outside of backgear casing (8) motor (6) is installed.
8, the speed-change gear box of electric tool as claimed in claim 1, it is characterized in that: in described clutch part, right side at carrier gear (14) is provided with end face clutch, the end face clutch that can fit with the end face clutch on carrier gear (14) right side is set in the left side of built-up gear (11), is provided for promoting the Returnning spring (15) that carrier gear (14) moves right in the left side of carrier gear (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100230154A CN101328968A (en) | 2008-07-09 | 2008-07-09 | Speed change gear box of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100230154A CN101328968A (en) | 2008-07-09 | 2008-07-09 | Speed change gear box of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101328968A true CN101328968A (en) | 2008-12-24 |
Family
ID=40204922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100230154A Pending CN101328968A (en) | 2008-07-09 | 2008-07-09 | Speed change gear box of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101328968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765080A (en) * | 2012-07-18 | 2012-11-07 | 宁波汉浦工具有限公司 | Double-speed electric hammer |
-
2008
- 2008-07-09 CN CNA2008100230154A patent/CN101328968A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765080A (en) * | 2012-07-18 | 2012-11-07 | 宁波汉浦工具有限公司 | Double-speed electric hammer |
| CN102765080B (en) * | 2012-07-18 | 2014-12-24 | 宁波汉浦工具有限公司 | Double-speed electric hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081224 |