CN103963027B - Swing-type power tool - Google Patents
Swing-type power tool Download PDFInfo
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- CN103963027B CN103963027B CN201310046808.9A CN201310046808A CN103963027B CN 103963027 B CN103963027 B CN 103963027B CN 201310046808 A CN201310046808 A CN 201310046808A CN 103963027 B CN103963027 B CN 103963027B
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- semiaxis
- swing
- power tool
- type power
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Abstract
The present invention provides a kind of swing-type power tool, it includes housing and the driving assembly, eccentric, pull-fork assembly and the output shaft that are arranged in described housing, described driving assembly drives described output shaft to do oscillating motion around the axis of self by described eccentric and pull-fork assembly, described output shaft includes semiaxis and lower semiaxis, the end face that described upper semiaxis contacts with lower semiaxis is equipped with the intermeshing gear teeth, when described lower semiaxis is in described output shaft stall in rotation process, between described upper semiaxis and described lower semiaxis, the intermeshing gear teeth are separated from each other.When this swing-type power tool stall occurs in the course of the work, upper semiaxis can be separated from each other with lower semiaxis, and such machine afterbody is just difficult to excessive vibrations occur, such that it is able to avoid causing human body excessive injury.
Description
Technical field
The present invention relates to a kind of power tool, particularly relate to a kind of swing-type power tool.
Background technology
Swing-type power tool is a kind of conventional power tool.Its operation principle is the output shaft axial line around self
Do oscillating motion.After user installs different operating head attachment on output shaft, swing-type power tool just can realize many
Plant different operating functions.Wherein, conventional operating head attachment includes straight blade, saw blade, triangle frosted dish, scraper etc..
By these operating head attachment, swing-type power tool can realize sawing, cut, grind, the work requirements such as scrape.
Swing-type power tool is likely encountered the situation of heavy load, the work of now conventional swing-type power tool in use
Head can stall.But, when working head stall, this swing-type power tool is also in operating.So work of this swing-type power tool
Head is the formation of fulcrum, and the afterbody of swing-type power tool starts to swing.Owing to operator holds the afterbody of machine, tail swing institute
The vibrations produced will pass to operator, consequently, it is possible to damage human body.
Summary of the invention
Based on this, it is necessary to provide a kind of swing-type power tool being difficult to and human body being damaged.
A kind of swing-type power tool, the driving assembly including housing and being arranged in described housing, eccentric, pull-fork assembly
And output shaft, described driving assembly drives described output shaft to swing around the axis of self by described eccentric and pull-fork assembly
Motion, described output shaft includes semiaxis and lower semiaxis, and described pull-fork assembly is connected with described upper semiaxis, described upper semiaxis and under
The end face that semiaxis contacts is equipped with the intermeshing gear teeth, when described lower semiaxis is in the stall in rotation process of described output shaft
Time, between described upper semiaxis and described lower semiaxis, the intermeshing gear teeth are separated from each other.
Wherein in an embodiment, being provided with flexible member in described housing, described flexible member drives described upper semiaxis
Mutually press close to described lower semiaxis, make described upper semiaxis engage each other with the gear teeth of described lower semiaxis.
Wherein in an embodiment, in described housing around described upper semiaxis be provided with one annular against end face, institute
Stating flexible member is back-moving spring, and one end of described back-moving spring is against described against end face, and the other end is resisted against described shift fork
On assembly.
Wherein in an embodiment, described upper semiaxis overlaps intrinsic bearing or friction pad, one end of described back-moving spring
Against described against end face, on the wheel face of the outer ring that the other end is resisted against described bearing or on described friction pad.
Wherein in an embodiment, described being provided with annular groove against end face, described back-moving spring is set in described
Outside upper semiaxis, one end of described back-moving spring is located at described against in the annular groove of end face.
Wherein in an embodiment, on the wheel face of the outer ring of described bearing or described friction pad is provided with annular groove,
Described back-moving spring is set in outside described upper semiaxis, and the wheel face of the outer ring of described bearing is located in one end of described back-moving spring
In annular groove or in the annular groove of described friction pad.
Wherein in an embodiment, the flank of tooth of the gear teeth of described upper semiaxis and described lower semiaxis be isosceles trapezoid or etc.
Lumbar triangle shape.
Wherein in an embodiment, described isosceles trapezoid is 30 degree to 80 degree with the base angle of isosceles triangle.
Wherein in an embodiment, described lower semiaxis is rotated by bearing and is fixed on described housing.
Above-mentioned swing-type power tool output shaft includes semiaxis and lower semiaxis, and the end face that upper semiaxis contacts with lower semiaxis
It is provided with the intermeshing gear teeth, when output shaft lower semiaxis stall in rotation process, mutually nibbles between upper semiaxis and lower semiaxis
The gear teeth closed are separated from each other, and so when stall occurs in this swing-type power tool, machine afterbody is just difficult to excessive vibrations occur,
Such that it is able to avoid human body is caused excessive injury.
Accompanying drawing explanation
Fig. 1 is the swing-type power tool axonometric chart of an embodiment；
Fig. 2 is the sectional view of swing-type power tool shown in Fig. 1；
Fig. 3 is the axonometric chart of the output shaft of swing-type power tool shown in Fig. 1；
Fig. 4 is the enlarged drawing at swing-type power tool I shown in Fig. 2.
Swing-type power tool 100, housing 110, driving assembly 120, eccentric 130, pull-fork assembly 140, output shaft 150,
Operating head attachment 160, lock-screw 170, upper semiaxis 152, lower semiaxis 154, back-moving spring 156, the gear teeth 158, against end face 151
Detailed description of the invention
Refer to Fig. 1～3, an embodiment provides a kind of swing-type power tool 100.This swing-type power tool 100 includes
Housing 110 and the driving assembly 120 being arranged in housing 110, eccentric 130, pull-fork assembly 140 and output shaft 150.Driving group
Part 120 drives output shaft 150 to do oscillating motion around the axis of self by eccentric 130 and pull-fork assembly 140.Wherein, output
Axle 150 includes semiaxis 152 and lower semiaxis 154.Pull-fork assembly 140 is connected with upper semiaxis 152.Upper semiaxis 152 and lower semiaxis 154
The end face contacted is equipped with the intermeshing gear teeth 158.Lower semiaxis 154 is rotated by bearing and is fixed on housing 110.Instantly
Semiaxis 154 in output shaft 150 rotation process during stall, the intermeshing gear teeth 158 between upper semiaxis 152 and lower semiaxis 154
It is separated from each other.
This swing-type power tool 100 in the course of the work, when output shaft 150 lower semiaxis 154 stall in rotation process,
I.e. descending semiaxis 154 to stop swinging, between upper semiaxis 152 and lower semiaxis 154, the intermeshing gear teeth 158 are separated from each other.So, should
Swing-type power tool 100 tail transfer will be less to the vibrations of human body, such that it is able to avoid causing human body excessive injury.
Being separated from each other between upper semiaxis 152 and lower semiaxis 154 can be by arranging detection in the housing 110 of this swing tool 100
Device realizes with segregation apparatus.Detection device is used for detecting output shaft 150 the most whether stall, when detection device
When output shaft 150 stall in the course of the work being detected, upper semiaxis 152 is separated by segregation apparatus with lower semiaxis 154, thus subtracts
The vibrations of this swing-type power tool 100 afterbody little, and then reduce the injury that human body is caused.
Refer to Fig. 4, in this embodiment, the phase of the intermeshing gear teeth 158 between upper semiaxis 152 with lower semiaxis 154
Engaging mutually and separating is to be realized with lower relatively rotating of semiaxis 154 by flexible member and upper semiaxis 152.
Flexible member is mutually pressed close to lower semiaxis 154 with the upper semiaxis 152 of driving in being arranged at housing 110, makes semiaxis 152
Engage each other with the gear teeth of lower semiaxis 154.Flexible member herein is back-moving spring 156.
In the housing 110 of this swing tool 100 around upper semiaxis 152 be provided with one annular against end face 151, reset bullet
One end of spring 156 abuts against on end face 151, and the other end is resisted against on pull-fork assembly 140.During semiaxis 154 stall instantly, on
Semiaxis 152 can overcome the elastic force of back-moving spring 156 to be separated with lower semiaxis 154 because of the stall of lower semiaxis 154.
Further, upper semiaxis 152 overlaps intrinsic bearing or friction pad, i.e. bearing or friction pad and be enclosed within semiaxis 152
Outside, and with upper semiaxis 152 without relative motion.For bearing, the inner ring of bearing is fixed on semiaxis 152, and outer ring can be around
Semiaxis 152 to rotate.One end of back-moving spring 156 abuts against on end face 151, and the other end is resisted against the outer ring of bearing
On wheel face or on friction pad.When being fixed with bearing on upper semiaxis 152, upper semiaxis 152 will not drive reset when swinging
Spring 156 reverses.
In order to make the fixing more reliable and more stable of back-moving spring 156, annular groove, axle can be provided with on end face 151
Annular groove can also be provided with on the wheel face of the outer ring held or on friction pad.Back-moving spring 156 is set in outside semiaxis 152,
One end of back-moving spring 156 is located at the other end in the annular groove of end face 151 and is located at the annular of the wheel face of the outer ring of bearing
In groove or in the annular groove of friction pad.
Refer to Fig. 3, the upper semiaxis 152 of this swing tool 100 can be with the flank of tooth of the gear teeth 158 of lower semiaxis 154
Isosceles trapezoid.The base angle of this isosceles trapezoid is 30 degree to 80 degree.The upper semiaxis 152 of this swing tool 100 and the wheel of lower semiaxis 154
The flank of tooth of tooth 158 can also be isosceles triangle.The base angle of this isosceles triangle is 30 degree to 80 degree.
During use, the lower semiaxis 154 of the output shaft 150 of this swing tool 100 will install operating head attachment 160.
This operating head attachment 160 can be straight blade, saw blade, triangle frosted dish, scraper etc..Operating head attachment 160 is by locking
Screw 170 is fixed on lower semiaxis 154.In work process, when there is stall in the operating head attachment 160 of this swing tool 100,
Lower semiaxis 154 will stop operating, and upper semiaxis 152 is rotated further.At this moment, upper semiaxis 152 will overcome the elastic force of back-moving spring 156
And be separated with lower semiaxis 154, say, that upper semiaxis 152 will be separated from each other with the lower intermeshing gear teeth of semiaxis 154 158,
Upper semiaxis 152 will slide relative to lower semiaxis 154.So, the vibrations of the afterbody of this swing tool 100 will reduce, thus just
It is possible to prevent afterbody to shake the injury that human body is caused.
When normally working, upper semiaxis 152 drives lower semiaxis 154 to swing, nibbling between upper semiaxis 152 and lower semiaxis 154
Close and rely on the elastic acting force of back-moving spring 156 to ensure.The elastic acting force of back-moving spring 156 is the least may cause this swing
Power tool 100 cannot normally work, the biggest shake that this swing-type power tool 100 may be caused to pass to human body of elastic acting force
Dynamic bigger.When reality is applied, upper semiaxis 152 can be controlled by the size adjusting the elastic acting force of back-moving spring 156
When occur separating with lower semiaxis 154, thus both ensured the normal work of this swing-type power tool 100, again can be relatively
Good reduction passes to the vibrations of human body.
Output shaft 150 is divided into two parts by this swing-type power tool 100, is respectively upper semiaxis 152 and lower semiaxis 154, on
The end face that semiaxis 152 contacts with lower semiaxis 154 is provided with the intermeshing gear teeth, when output shaft 150 lower half in rotation process
During axle 154 stall, between upper semiaxis 152 and lower semiaxis 154, the intermeshing gear teeth 158 will be separated from each other, so when this swing
When stall occurs in power tool, machine afterbody is just difficult to excessive vibrations occur, such that it is able to avoid causing human body excessive
Injury.This swing-type power tool 100 has safe and reliable advantage.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a swing-type power tool, the driving assembly including housing and being arranged in described housing, eccentric, pull-fork assembly and
Output shaft, described driving assembly drives described output shaft to do swing fortune around the axis of self by described eccentric and pull-fork assembly
Dynamic, it is characterised in that described output shaft includes semiaxis and lower semiaxis, and described pull-fork assembly is connected with described upper semiaxis, described
The end face that upper semiaxis contacts with lower semiaxis is equipped with the gear teeth, wherein, is provided with flexible member, described flexible member in described housing
Drive described upper semiaxis mutually to press close to described lower semiaxis, make described upper semiaxis engage each other with the gear teeth of described lower semiaxis, when
Described lower semiaxis is when described output shaft stall in rotation process, intermeshing between described upper semiaxis and described lower semiaxis
The gear teeth are separated from each other, and make the vibrations of the afterbody of swing tool reduce.
Swing-type power tool the most according to claim 1, it is characterised in that be provided with around described upper semiaxis in described housing
One is annular against end face, and described flexible member is back-moving spring, one end of described back-moving spring against described against end face,
The other end is resisted against on described pull-fork assembly.
Swing-type power tool the most according to claim 2, it is characterised in that overlap intrinsic bearing or friction on described upper semiaxis
Pad, one end of described back-moving spring against described against end face, on the wheel face of the outer ring that the other end is resisted against described bearing or
On described friction pad.
Swing-type power tool the most according to claim 3, it is characterised in that described be provided with annular groove against end face,
Described back-moving spring is set in outside described upper semiaxis, and the described annular groove against end face is located in one end of described back-moving spring
In.
5. according to the swing-type power tool described in claim 3 or 4, it is characterised in that on the wheel face of the outer ring of described bearing or
Described friction pad is provided with annular groove, and described back-moving spring is set in outside described upper semiaxis, one end of described back-moving spring
In the annular groove of the wheel face being located at the outer ring of described bearing or in the annular groove of described friction pad.
Swing-type power tool the most according to claim 1, it is characterised in that described upper semiaxis and the gear teeth of described lower semiaxis
The flank of tooth be isosceles trapezoid or isosceles triangle.
Swing-type power tool the most according to claim 6, it is characterised in that described isosceles trapezoid and the end of isosceles triangle
Angle is 30 degree to 80 degree.
Swing-type power tool the most according to claim 1, it is characterised in that described lower semiaxis is rotated by bearing and is fixed on
On described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046808.9A CN103963027B (en) | 2013-02-05 | 2013-02-05 | Swing-type power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046808.9A CN103963027B (en) | 2013-02-05 | 2013-02-05 | Swing-type power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103963027A CN103963027A (en) | 2014-08-06 |
| CN103963027B true CN103963027B (en) | 2016-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310046808.9A Active CN103963027B (en) | 2013-02-05 | 2013-02-05 | Swing-type power tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN103963027B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954941B (en) * | 2018-11-30 | 2023-11-24 | 张家港市创基机械设备制造有限公司 | Mini swing saw |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643069Y (en) * | 2003-02-20 | 2004-09-22 | 湘潭大学 | Trapezoidal friction clutch |
| DE10356068A1 (en) * | 2003-12-01 | 2005-06-23 | Robert Bosch Gmbh | Hand tool |
| DE102004059331B4 (en) * | 2004-12-09 | 2021-02-18 | Robert Bosch Gmbh | Hand machine tool with a clutch |
| SE529575C2 (en) * | 2005-11-17 | 2007-09-25 | Atlas Copco Tools Ab | Torque dependent release clutch for a screwdriver |
| CN201067900Y (en) * | 2007-07-14 | 2008-06-04 | 胡继宁 | Reciprocating power-driven tool |
| TW200930513A (en) * | 2008-01-11 | 2009-07-16 | Kabo Tool Co | Structure of tooth-shaped part of tool |
| CN101585178B (en) * | 2008-05-23 | 2011-01-05 | 谢智庆 | Jugged component and hand tool with same |
| CN102022446A (en) * | 2009-09-15 | 2011-04-20 | 郑长安 | Coupler with overload protection function |
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2013
- 2013-02-05 CN CN201310046808.9A patent/CN103963027B/en active Active
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| Publication number | Publication date |
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| CN103963027A (en) | 2014-08-06 |
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