CN102019610B - Swing power tool - Google Patents
Swing power tool Download PDFInfo
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- CN102019610B CN102019610B CN 200910178064 CN200910178064A CN102019610B CN 102019610 B CN102019610 B CN 102019610B CN 200910178064 CN200910178064 CN 200910178064 CN 200910178064 A CN200910178064 A CN 200910178064A CN 102019610 B CN102019610 B CN 102019610B
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- drive shaft
- motor drive
- power tool
- motor
- flat square
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Abstract
A swing power tool comprises a shell (1) and a motor (2) disposed in the shell (1); the motor (2) has a motor shaft (20); an output shaft (5) extends from the shell (1); an eccentric wheel (3) and a shifting fork assembly (4) are connected between the output shaft (5) and the motor shaft (20); the output shaft (5) swings around the axial lead thereof; the swing power tool further comprises an eccentric shaft sleeve (6) disposed between the motor shaft (20) and the eccentric wheel (3); the eccentric shaft sleeve (6) has a connecting part; an adapting member corresponding to the connecting part is disposed on the motor shaft (20); an elastic member (65) is disposed between the connecting part and the adapting member. The elastic member is disposed between a flat square hole of the eccentric shaft sleeve and a rigid flat square member on the motor shaft, so that the flat square hole and the flat square member are in a compaction state, and the gap is compensated; the torsion transferring between the flat square hole and the flat square member does not generate a relatively big vibration; noise effects are further reduced, and the torsion transferring device has relatively strong rigidity; a long service life is provided.
Description
Technical field
The present invention relates to a kind of swing power tool of hand-held.
Background technology
Multi Role Aircraft is the swing power tool of the common hand-held of industry, and its operation principle is that the axial line that output shaft centers on self is done oscillating motion.Therefore, when the user is being equipped with different working head annexes on the output shaft after, just can realize multiple different operating function.Common working head annex comprises straight blade, saw blade, triangle frosted dish, scraper etc., can realize as work requirements such as sawing, cut, grind, scrape.
In traditional Multi Role Aircraft, output shaft is connected with motor drive shaft by the swing mechanism that is arranged on enclosure interior, and, include an axle sleeve in the swing mechanism, usually adopt metalwork to be connected between motor drive shaft and the axle sleeve, be used to transmit moment of torsion, common connected mode is flat side's connection.
Owing to do not carry out operations such as deceleration in the above-mentioned moment of torsion transmittance process, thereby the hunting frequency of output shaft is bigger, maintains 5000 to 20000 revolution per seconds.Like this, it is bigger to make that swing mechanism shakes in the course of the work, and seismaesthesia is stronger, and also can be accompanied by the bigger noise of generation, for user's long-time use has caused inconvenience.Therefore, industry has been developed a solution and has been addressed this problem.
International Patent Application WO 2008128803A2 has disclosed a kind of swing power tool that has shock-damping structure.At the free end of motor drive shaft, and and axle sleeve between also be connected with a coupling element, described coupling element is star, the increment of star is used to transmit moment of torsion.Described coupling element adopts plastic cement material to make, and itself has certain elasticity, can effectively reduce by motor drive shaft and be passed to vibrations that moment of torsion produced on the axle sleeve, and has also avoided the transmission noise between the metalwork in traditional connected mode simultaneously.
But, because this coupling element itself is a plastic cement material, in the process of transmitting moment of torsion, easily produce wearing and tearing, cause service life lower.
For this reason, be necessary prior art is further improved in fact.
Summary of the invention
The object of the present invention is to provide a kind of swing power tool, its torque transmitter rigidity is stronger, long perfomance life.
For achieving the above object, the invention provides a kind of swing power tool, the motor that comprises housing and be arranged on enclosure interior, described motor has motor drive shaft, extended output shaft in housing, be connected with eccentric wheel and pull-fork assembly between described output shaft and the motor drive shaft, output shaft is done oscillating motion around self axial line, described swing power tool also comprises the excentric sleeve that is arranged between motor drive shaft and the eccentric wheel, described excentric sleeve has connecting portion, corresponding described connecting portion is equiped with the counterpart of rigidity on the described motor drive shaft, also is provided with elastic component between the counterpart of described connecting portion and rigidity.
Optimize:
Described connecting portion is flat square hole, and described counterpart is flat side's part.
The direction of rotation along motor drive shaft of described flat square hole, and be positioned at the intersection of square limit and circular edges, also divide other to be formed with a groove that extends along axial direction, described elastic component is housed in the groove.
Described elastic component is the pole shape, adopts nylon rod to make, and also can adopt rubber-like material such as plastic cement to make.
In the present invention, by between flat side's part of the flat square hole of excentric sleeve and the rigidity on the motor drive shaft, elastic component being set, be impaction state between flat square hole and the flat side's part and make, thereby compensated the gap, guaranteeing that the moment of torsion transmission between the two can not produce bigger vibrations, and when further having reduced noise effect, this torque transmitter also has stronger rigidity, and can be provided permanent service life.
Description of drawings
Fig. 1 swings the structural representation of the preferred embodiment of power tool for the present invention.
The cutaway view of Fig. 2 A-A line that is excentric sleeve, motor drive shaft, elastic component and balance weight in Fig. 1.
Related elements reference numeral in the diagram is as follows:
1, housing 2, motor 3, eccentric wheel
4, pull-fork assembly 5, output shaft 6, excentric sleeve
7, bearing 8, bearing 9, balance weight
10, O type circle 20, motor drive shaft 61, connecting pin
62, main body 71, groove 81, groove
21, flat side's part 63, flat square hole 64, accepting groove
65, elastic component
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
See also Fig. 1, a kind of swing power tool comprises housing 1, motor 2, eccentric wheel 3, pull-fork assembly 4 and output shaft 5.Wherein, housing 1 roughly is tubular structure, and its front end (right side is defined as front end among Fig. 1) is formed with the angle bending, and the rear end then supplies user's handling; Motor 2 is arranged on the inside of housing 1, and has motor drive shaft 20; Output shaft 5 extends from the angle bending place of housing 1; Eccentric wheel 3 and pull-fork assembly 4 are connected between motor drive shaft 20 and the output shaft 5.
Described output shaft 5 can be done oscillating motion around self axial line X.Here, transmit moment of torsion by the mode of eccentric wheel 3 and pull-fork assembly 4 between motor drive shaft 20 and the output shaft 5, be industry common swing mechanism, do not do detailed description at this.
Please continue to consult Fig. 1, also be connected with an excentric sleeve 6 on motor drive shaft 20, described excentric sleeve 6 has two parts, be respectively connecting pin 61 and main body 62, and, connecting pin 61 and main body 62 non-coaxial settings, promptly connecting pin 61 is eccentric setting with respect to main body 62.Eccentric wheel 3 is set on the connecting pin 61, main body 62 then with 20 coaxial connections of motor drive shaft.Thereby, when motor drive shaft 20 produces rotation, will drive excentric sleeve 6 and also produce rotation.Be provided with because connecting pin 61 is eccentric with respect to motor drive shaft 20, and then drive eccentric wheel 3 also with respect to the eccentric rotation of motor drive shaft 20 generations.
Periphery in main body 62, be provided with two spring bearings 7,8 side by side, be used for excentric sleeve 6 is supported, and, between these two spring bearings 7,8, periphery at excentric sleeve 6 also is arranged with balance weight 9, is used for that the off-centre of eccentric wheel 3 is rotated the vibrations that caused and compensates effect.
In addition,, also be formed with a groove 71,81 on the circumferencial direction, and in groove 71,81, contain O type circle 10, can effectively prevent relatively rotating of bearing outer ring, and have certain damping effect in the outer ring of each bearing 7,8.
In the present invention, support the inside that is arranged on housing 1, play the effect of stablizing excentric sleeve 6, also alleviated noise simultaneously owing to be arranged with excentric sleeve 6 quilts two spring bearings 7,8 side by side of balance weight 9.
See also Fig. 2, in the connected mode of excentric sleeve 6 and motor drive shaft 20, adopted traditional flat side's connected mode, can also adopt connected modes such as square hole certainly.Wherein, flat side's connected mode promptly is arranged with flat side's part 21 on motor drive shaft 20, is formed with flat square hole 63 and the inboard of excentric sleeve 6 is also adaptive.Need to prove, at flat square hole 63 along clockwise two drift angle places, be the intersection on the square limit and the circular arc limit of flat square hole 63, also divide other to be formed with an accepting groove 64 that extends along the axial direction of motor drive shaft 20, in accepting groove 64, contain an elastic component 65 respectively.Described elastic component 65 is the pole shape, can adopt nylon rod to make, and certainly, also can adopt rubber-like material such as plastic cement to make.Perhaps, also can adopt elements such as spring, can reach same effect.
By adopting in such a way, when motor drive shaft 20 produces rotation (be example in a clockwise direction), motor drive shaft 20 can rotate by the flat side's part 21 of drive together, and flat side's part 21 drives excentric sleeve 6 and rotates together.At this moment, because have the gap between the flat square hole 63 of flat side's part 21 and excentric sleeve 6, make between the flat square hole 63 of excentric sleeve 6 and the flat side's part 21 on the motor drive shaft 20 and be impaction state and be contained in elastic component 65 in the accepting groove 64, thereby compensated the gap, make the moment of torsion transmission between the two can not produce bigger vibrations, and reduction simultaneously noise problem.
Simultaneously, because above-mentioned torque transmitter has stronger rigidity, can provide permanent service life.
Claims (3)
1. swing power tool for one kind, comprise housing (1) and be arranged on the inner motor (2) of housing (1), described motor (2) has motor drive shaft (20), extended output shaft (5) in housing (1), be connected with eccentric wheel (3) and pull-fork assembly (4) between described output shaft (5) and the motor drive shaft (20), output shaft (5) is done oscillating motion around self axial line, described swing power tool also comprises the excentric sleeve (6) that is arranged between motor drive shaft (20) and the eccentric wheel (3), it is characterized in that: described excentric sleeve (6) has connecting portion, described motor drive shaft (20) is gone up the counterpart that corresponding described connecting portion is equiped with rigidity, also be provided with elastic component (65) between the counterpart of described connecting portion and rigidity, described connecting portion is flat square hole (63), described counterpart is flat side's part (21), described flat square hole (63) is along the direction of rotation of motor drive shaft (20), and be positioned at the intersection of square limit and circular edges, also divide other to be formed with an accepting groove (64) that extends along axial direction, described elastic component (65) is housed in the accepting groove (64).
2. swing power tool as claimed in claim 1 is characterized in that: described elastic component (65) is the pole shape, adopts nylon rod to make or rubber-like material such as plastic cement is made.
3. swing power tool as claimed in claim 1 is characterized in that: described elastic component (65) is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910178064 CN102019610B (en) | 2009-09-22 | 2009-09-22 | Swing power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910178064 CN102019610B (en) | 2009-09-22 | 2009-09-22 | Swing power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102019610A CN102019610A (en) | 2011-04-20 |
| CN102019610B true CN102019610B (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910178064 Active CN102019610B (en) | 2009-09-22 | 2009-09-22 | Swing power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102019610B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170957A (en) * | 2012-12-30 | 2013-06-26 | 蔡吕乾 | Swing type power tool and deflection component thereof |
| CN104249339A (en) * | 2013-06-25 | 2014-12-31 | 苏州宝时得电动工具有限公司 | Swinging power tool |
| CN105291058B (en) * | 2014-06-30 | 2017-04-19 | 南京德朔实业有限公司 | Multi-functional power tool |
| CN104889944B (en) * | 2015-06-15 | 2017-09-26 | 覃桂才 | A kind of electric hand tool |
| CN110680209B (en) * | 2019-11-04 | 2024-07-05 | 广东格兰仕集团有限公司 | Eccentric or oblique transmission detachable shaft output mechanism and bean grinding coffee machine thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728871A (en) * | 1970-06-19 | 1973-04-24 | Philips Corp | Coupling for shafts |
| US4121476A (en) * | 1977-05-16 | 1978-10-24 | Caterpillar Tractor Co. | Flexible drive |
| DE102004018740A1 (en) * | 2004-04-17 | 2005-11-03 | Horst Wanek | Shaft coupling with torque limiter has one or more radial friction grips fitted into recesses on the inside of a coupling sleeve to grip onto a drive shaft |
| CN200977643Y (en) * | 2006-10-31 | 2007-11-21 | 台湾保来得股份有限公司 | Principal axis locking and cushioning mechanism for electric tool |
| CN201166060Y (en) * | 2008-03-27 | 2008-12-17 | 武汉钢铁(集团)公司 | Coupling capable of rapidly mounting and dismounting |
| CN201511354U (en) * | 2009-09-22 | 2010-06-23 | 苏州宝时得电动工具有限公司 | Swing power tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204824U (en) * | 1985-11-05 | 1986-12-17 | 李铁民 | Coupling with external and internal flanges |
| WO2007045418A1 (en) * | 2005-10-17 | 2007-04-26 | Borgwarner Inc. | Coupling device for transmitting a torque |
| DE102007018464A1 (en) * | 2007-04-19 | 2008-10-23 | Robert Bosch Gmbh | Motor driven machine tool |
| CN101408229B (en) * | 2007-10-12 | 2010-06-02 | 中国有色(沈阳)泵业有限公司 | Connection device between shafts |
-
2009
- 2009-09-22 CN CN 200910178064 patent/CN102019610B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728871A (en) * | 1970-06-19 | 1973-04-24 | Philips Corp | Coupling for shafts |
| US4121476A (en) * | 1977-05-16 | 1978-10-24 | Caterpillar Tractor Co. | Flexible drive |
| DE102004018740A1 (en) * | 2004-04-17 | 2005-11-03 | Horst Wanek | Shaft coupling with torque limiter has one or more radial friction grips fitted into recesses on the inside of a coupling sleeve to grip onto a drive shaft |
| CN200977643Y (en) * | 2006-10-31 | 2007-11-21 | 台湾保来得股份有限公司 | Principal axis locking and cushioning mechanism for electric tool |
| CN201166060Y (en) * | 2008-03-27 | 2008-12-17 | 武汉钢铁(集团)公司 | Coupling capable of rapidly mounting and dismounting |
| CN201511354U (en) * | 2009-09-22 | 2010-06-23 | 苏州宝时得电动工具有限公司 | Swing power tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102019610A (en) | 2011-04-20 |
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