CN102765080A - Double-speed electric hammer - Google Patents
Double-speed electric hammer Download PDFInfo
- Publication number
- CN102765080A CN102765080A CN2012102500328A CN201210250032A CN102765080A CN 102765080 A CN102765080 A CN 102765080A CN 2012102500328 A CN2012102500328 A CN 2012102500328A CN 201210250032 A CN201210250032 A CN 201210250032A CN 102765080 A CN102765080 A CN 102765080A
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- gear
- spline
- double speed
- output shaft
- electric hammer
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- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
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Abstract
The invention discloses a double-speed electric hammer which can realize double-speed output without great modification to the structure of a single-speed electric hammer. The double-speed electric hammer comprises a motor (7), a transmission mechanism, an impact mechanism and a double-speed mechanism (8), wherein the motor (7), the double-speed mechanism (8), the transmission mechanism and the impact mechanism are sequentially connected with one another.
Description
Technical field
The present invention relates to the electric tool technical field, specifically is a kind of double speed electric hammer.
Background technology
The single speed electric hammer generally comprises motor, transmission mechanism and the beater mechanism that connects in regular turn; And the double speed electric hammer can be realized the output of two kinds of rotating speeds; But the mentality of designing that realizes double speed output is suit low speed gear wheel and a high speed gear wheel on the impacting shaft of beater mechanism; Suit can be respectively and low speed gear wheel and the engagement of high speed gear wheel or the low speed pinion and the high speed pinion that separate on the power transmission shaft of transmission mechanism, and the combination through above-mentioned four gears realizes that double speed exports, such as the disclosed technical scheme of Chinese invention patent CN200710134497.6; Though technique scheme has the advantage of compact conformation; But the structural modification for existing single speed electric hammer is bigger, can't make full use of ready-made parts, such as transmission mechanism and beater mechanism; Promptly, need transmission mechanism and beater mechanism are made bigger change according to said mentality of designing.
Summary of the invention
The technical problem that the present invention will solve is that a kind of double speed electric hammer that need not just can realize greatly the structural modification of single speed electric hammer double speed output is provided.
Technical scheme of the present invention is, double speed electric hammer of the present invention, and it comprises motor, transmission mechanism and beater mechanism, and it also comprises double speed mechanism, and said motor, double speed mechanism, transmission mechanism are connected with beater mechanism in regular turn.
Operation principle of the present invention is, driven by motor double speed mechanism rotates, and double speed mechanism can realize two kinds of rotating speeds outputs, and different rotating speeds output makes transmission mechanism driving impact mechanism be operated under the different rotating speeds.
After adopting said structure; The present invention compared with prior art has the following advantages: combine technique scheme and operation principle to know, the invention provides modular mentality of designing; Form double speed mechanism module of increase in the structure of original single speed electric hammer; Thereby change the single speed electric hammer into the double speed electric hammer easily, therefore, the present invention has the advantage that need not just can realize greatly the structural modification of single speed electric hammer double speed output.
As improvement, said double speed mechanism comprises output shaft and power shaft, gear shift gear, twin-stage gear; Output shaft and power shaft are positioned on the same axis, and power shaft is the shaft of motor, and output shaft is connected with the input of transmission mechanism; The gear shift gear is provided with first gear and second gear, and first gear and second gear can relatively rotate, and the spline housing on first gear is connected with spline on the output shaft, and the spline housing on second gear is connected with spline on the power shaft; The twin-stage gear is provided with the 3rd gear and the 4th gear, said first gear and the 4th gears engaged; Spline housing on second gear can move along the spline on the power shaft; Should move makes the spline housing on said second gear to be connected with the spline on the output shaft or to separate; Spline housing on second gear is when spline on the output shaft separates; Said second gear and the 3rd gears engaged, the spline housing on second gear are when spline on the output shaft is connected, and said second gear separates with the 3rd gear;
The operation principle of said double speed mechanism is, power shaft drives second gear and rotates, and the spline housing on second gear is when spline on the output shaft separates; Said second gear and the 3rd gears engaged, then second gear driven the 3rd gear rotates, and the 3rd gear driven the 4th gear rotates; The 4th gear driven first gear rotates, and the first gear driven output shaft rotates, like this; Just realize first kind of rotating speed output, first gear and second gear are for relatively rotating; Spline housing on second gear is when spline on the output shaft is connected, and said second gear separates with the 3rd gear, and then second direct geared drives output shaft and rotates; Like this, just realize second kind of rotating speed output, this moment, output shaft drove the rotation of first gear conversely; First gear driven the 4th gear rotates; The 4th gear driven the 3rd gear rotates, and in this case, it all is idle running that first gear, twin-stage gear are equivalent to;
Technical scheme and operation principle in conjunction with above-mentioned double speed mechanism can know, when the mutual cooperation of each parts can the output of two kinds of rotating speeds, compact conformation, the parts of double speed mechanism were few, annexation is simple and reliable.
As improvement; Said first gear and second gear can relatively rotate and be meant, are provided with a bearing between first gear and second gear, and the inner ring of said bearing is connected with second gear; The outer ring of said bearing is connected with first gear; This syndeton makes the gear shift gear compact, simple, is convenient to install, and installs fast.
As improvement, it also comprises the shift fork that is used for moving the gear shift gear, and the spline housing on first gear can move along the spline on the output shaft; Two convexities on the shift fork lay respectively at the both sides of first gear, and this structure is used for the whole gear shift gear that moves, when promptly moving shift fork; Left side convexity can promote first gear to left movement, and the first gear driven bearing and second gear are to left movement, in like manner; The right convexity can promote first gear and move right, and the first gear driven bearing and second gear move right, and this structure makes the gear shift gear compact, simple on the one hand; Be convenient to produce, saved axial dimension, and this structure be easy to connect, firm; Stressed better, on the other hand, provide convenience for moving second gear.
Description of drawings
Fig. 1 is the structural representation of double speed electric hammer of the present invention.
Fig. 2 is the structural representation of the double speed mechanism of double speed electric hammer of the present invention.
Fig. 3 is the part-structure sketch map of the double speed mechanism of double speed electric hammer of the present invention.
Fig. 4 is the exploded perspective view of gear shift gear of the double speed mechanism of double speed electric hammer of the present invention.
Shown in the figure, 1, output shaft, 2, power shaft, 3.1, first gear, 3.2, second gear; 4, shift fork, the 5.1, the 3rd gear, the 5.2, the 4th gear, 6, bearing; 7, motor, 8, double speed mechanism, 9, power transmission shaft, 10, wave bearing; 11, the input of transmission mechanism, 12, toggle, 13, piston, 14, housing.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Double speed electric hammer of the present invention, it comprises motor 7, transmission mechanism and beater mechanism, and it also comprises double speed mechanism 8, and said motor 7, double speed mechanism 8, transmission mechanism are connected with beater mechanism in regular turn.Said motor 7, double speed mechanism 8, transmission mechanism and beater mechanism are installed in the housing 14.Said motor 7, transmission mechanism and beater mechanism all adopt existing structure to get final product, and for ease of understanding, mark the power transmission shaft 9 of transmission mechanism among the figure, are installed in to wave bearing 10 on the power transmission shaft 9, with the piston 13 that waves the beater mechanism that bearing 10 is being connected.
Said double speed mechanism 8 comprises output shaft 1 and power shaft 2, gear shift gear, twin-stage gear; Output shaft 1 is positioned on the same axis with power shaft 2, and power shaft 2 is the shaft of motor 7, and output shaft 1 is connected with the input 11 of transmission mechanism; The gear shift gear is provided with first gear 3.1 and second gear 3.2; First gear 3.1 and second gear 3.2 can relatively rotate; Spline housing on first gear 3.1 is connected with spline on the output shaft 1, and the spline housing on second gear 3.2 is connected with spline on the power shaft 2; The twin-stage gear is provided with the 3rd gear 5.1 and the 4th gear 5.2, said first gear 3.1 and 5.2 engagements of the 4th gear; Spline housing on second gear 3.2 can move along the spline on the power shaft 2; Should move makes the spline housing on said second gear 3.2 to be connected with the spline on the output shaft 1 or to separate; Spline housing on second gear 3.2 is when spline on the output shaft 1 separates; Said second gear 3.2 and the engagement of the 3rd gear 5.1, the spline housing on second gear 3.2 are when spline on the output shaft 1 is connected, and said second gear 3.2 separates with the 3rd gear 5.1.
Said first gear 3.1 and second gear 3.2 can relatively rotate and be meant, are provided with a bearing 6 between first gear 3.1 and second gear 3.2, and the inner ring of said bearing 6 is connected with second gear 3.2, and the outer ring of said bearing 6 is connected with first gear 3.1.
It also comprises the shift fork 4 that is used for moving the gear shift gear, and shift fork 4 is connected with toggle 12 to make things convenient for the application of force, and the spline housing on first gear 3.1 can move along the spline on the output shaft 1; Two convexities on the shift fork 4 lay respectively at the both sides of first gear 3.1; When moving shift fork; Left side convexity can promote first gear 3.1 to left movement, and first gear, the 3.1 drive bearings 6 and second gear 3.2 are to left movement, in like manner; The right convexity can promote first gear 3.1 and move right, and first gear 3.1 drives bearing 6 and second gear 3.2 moves right.
State shown in Fig. 2 is that second gear 3.2 directly drives the situation that output shaft 1 rotates, and first gear 3.1 is idle running with the twin-stage gear.
Claims (4)
1. double speed electric hammer, it comprises motor (7), transmission mechanism and beater mechanism, it is characterized in that, and it also comprises double speed mechanism (8), and said motor (7), double speed mechanism (8), transmission mechanism are connected with beater mechanism in regular turn.
2. double speed electric hammer according to claim 1 is characterized in that, said double speed mechanism (8) comprises output shaft (1) and power shaft (2), gear shift gear, twin-stage gear; Output shaft (1) and power shaft (2) are positioned on the same axis, and power shaft (2) is the shaft of motor (7), and output shaft (1) is connected with the input (11) of transmission mechanism; The gear shift gear is provided with first gear (3.1) and second gear (3.2); First gear (3.1) and second gear (3.2) can relatively rotate; Spline housing on first gear (3.1) is connected with spline on the output shaft (1), and the spline housing on second gear (3.2) is connected with spline on the power shaft (2); The twin-stage gear is provided with the 3rd gear (5.1) and the 4th gear (5.2), said first gear (3.1) and the 4th gear (5.2) engagement; Spline housing on second gear (3.2) can move along the spline on the power shaft (2); Should move makes the spline housing on said second gear (3.2) to be connected or to separate with the spline on the output shaft (1); Spline housing on second gear (3.2) is when spline on the output shaft (1) separates; Said second gear (3.2) and the 3rd gear (5.1) engagement; Spline housing on second gear (3.2) is when spline on the output shaft (1) is connected, and said second gear (3.2) separates with the 3rd gear (5.1).
3. double speed electric hammer according to claim 2; It is characterized in that; Said first gear (3.1) and second gear (3.2) can relatively rotate and be meant; Be provided with a bearing (6) between first gear (3.1) and second gear (3.2), the inner ring of said bearing (6) is connected with second gear (3.2), and the outer ring of said bearing (6) is connected with first gear (3.1).
4. double speed electric hammer according to claim 2 is characterized in that, it also comprises the shift fork (4) that is used for moving the gear shift gear, and the spline housing on first gear (3.1) can move along the spline on the output shaft (1); Two convexities on the shift fork (4) lay respectively at the both sides of first gear (3.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250032.8A CN102765080B (en) | 2012-07-18 | 2012-07-18 | Double-speed electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250032.8A CN102765080B (en) | 2012-07-18 | 2012-07-18 | Double-speed electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102765080A true CN102765080A (en) | 2012-11-07 |
| CN102765080B CN102765080B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210250032.8A Active CN102765080B (en) | 2012-07-18 | 2012-07-18 | Double-speed electric hammer |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3774476A (en) * | 1971-09-09 | 1973-11-27 | Metabowerke Kg | Multiple speed electrical hand power tool such as electric drill and the like |
| CN101157214A (en) * | 2007-10-30 | 2008-04-09 | 常州赛迪电气制造有限公司 | Dual-speed multifunctional electric hammer |
| CN101328968A (en) * | 2008-07-09 | 2008-12-24 | 孙延新 | Speed change gear box of electric tool |
| CN101725675A (en) * | 2009-12-07 | 2010-06-09 | 昆山华恒工程技术中心有限公司 | High and low speed switching device |
| EP2338647A2 (en) * | 2009-12-23 | 2011-06-29 | Black & Decker Inc. | Hybrid impact tool with two-speed transmission |
| CN202239760U (en) * | 2011-07-14 | 2012-05-30 | 嘉禾工具有限公司 | Double-speed electric impact drill |
| CN202656156U (en) * | 2012-07-18 | 2013-01-09 | 宁波汉浦工具有限公司 | Double-speed electric hammer |
-
2012
- 2012-07-18 CN CN201210250032.8A patent/CN102765080B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3774476A (en) * | 1971-09-09 | 1973-11-27 | Metabowerke Kg | Multiple speed electrical hand power tool such as electric drill and the like |
| CN101157214A (en) * | 2007-10-30 | 2008-04-09 | 常州赛迪电气制造有限公司 | Dual-speed multifunctional electric hammer |
| CN101328968A (en) * | 2008-07-09 | 2008-12-24 | 孙延新 | Speed change gear box of electric tool |
| CN101725675A (en) * | 2009-12-07 | 2010-06-09 | 昆山华恒工程技术中心有限公司 | High and low speed switching device |
| EP2338647A2 (en) * | 2009-12-23 | 2011-06-29 | Black & Decker Inc. | Hybrid impact tool with two-speed transmission |
| CN202239760U (en) * | 2011-07-14 | 2012-05-30 | 嘉禾工具有限公司 | Double-speed electric impact drill |
| CN202656156U (en) * | 2012-07-18 | 2013-01-09 | 宁波汉浦工具有限公司 | Double-speed electric hammer |
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| Publication number | Publication date |
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| CN102765080B (en) | 2014-12-24 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double speed electric hammer Effective date of registration: 20231130 Granted publication date: 20141224 Pledgee: Ningbo Yinzhou Rural Commercial Bank Co.,Ltd. Hengxi Sub branch Pledgor: NINGBO HANPU TOOLS Co.,Ltd. Registration number: Y2023330002848 |
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