CN104227670B - Electric hammer - Google Patents
Electric hammer Download PDFInfo
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- CN104227670B CN104227670B CN201310253971.2A CN201310253971A CN104227670B CN 104227670 B CN104227670 B CN 104227670B CN 201310253971 A CN201310253971 A CN 201310253971A CN 104227670 B CN104227670 B CN 104227670B
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- spline
- housing
- external splines
- power transmission
- transmission shaft
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Abstract
The present invention relates to a kind of electric hammer, including housing, for connecting the power transmission shaft of motor shaft in being arranged on the knob on housing exterior walls and being arranged on housing, the jackshaft being fixed with the first external splines it is additionally provided with in housing, jackshaft is fixed with Oscillating lever bearing, power transmission shaft is fixed with and determines spline, power transmission shaft also gap is socketed with the driving member with the second external splines, first external splines and the second external splines are positioned at the both sides determining spline, it is additionally provided with in housing and can move left and right connect the first external splines and determine the first spline housing of spline, and can move left and right connect the second external splines and determine the second spline housing of spline, knob is connected to the cam pin extending between the first spline housing and the second spline housing.Two spline housings and determining spline fitted or separating on power transmission shaft is driven by the cam pin that rotarily drives of knob, control the power distribution of power transmission shaft, different element manipulation can be driven by two spline housings, thus different functions can be realized, simple in construction, function easy switching.
Description
Technical field
The present invention relates to a kind of power tool, particularly relate to a kind of electric hammer.
Background technology
Electric hammer is a kind of common electric tool, it rotates mainly through driven by motor main shaft, and then drive bit to realize electric drill function, by increasing cylinder on main shaft and coordinating Oscillating lever bearing, make the ram being connected with Oscillating lever bearing move back and forth to realize electric hammer function.
Existing electric hammer, drive mechanism is various informative, but more uses two knobs to regulate function switching.It addition, in some Single button handoff functionality schemes, generally there is provision of baroque shift fork, make electric hammer function handover scheme complicated, switching inconvenience.
Summary of the invention
Based on this, it is necessary to provide the electric hammer of a kind of simple in construction, function easy switching.
nullA kind of electric hammer，Including housing、For connecting the power transmission shaft of motor shaft in being arranged on the knob on housing exterior walls and being arranged on housing，The jackshaft being fixed with the first external splines it is additionally provided with in described housing，Jackshaft is fixed with Oscillating lever bearing，Described power transmission shaft is fixed with and determines spline，Described power transmission shaft also gap is socketed with the driving member with the second external splines，Described first external splines and the second external splines are positioned at the both sides determining spline，It is additionally provided with in housing and can move left and right connect the first external splines and determine the first spline housing of spline，And can move left and right connect the second external splines and determine the second spline housing of spline，Described knob is connected to the cam pin extending between the first spline housing and the second spline housing，It is provided with in described housing and makes the first spline housing and the first external splines and determine spline to keep the first return unit of the state that connects，It is additionally provided with in housing and makes the second spline housing and the second external splines and determine spline to keep the second return unit of the state that connects.
Wherein in an embodiment, described driving member is connected to toothing.
Wherein in an embodiment, described driving member is the gear with external splines.
Wherein in an embodiment, described driving member is additionally provided with internal spline, and on described power transmission shaft, gap is socketed with the travelling gear with the 3rd external splines, and described 3rd external splines and described internal spline combine.
Wherein in an embodiment, the end of one end of described power transmission shaft and described jackshaft connects together rotatably.
Wherein in an embodiment, one end of described power transmission shaft extend in the end of described jackshaft and passes through the bearings being fixed in jackshaft end.
Wherein in an embodiment, the other end of described power transmission shaft is fixed with driving gear.
Wherein in an embodiment, described jackshaft arranging the first locating part, described first return unit is located between the first locating part and the first spline housing；Described driving member or power transmission shaft are provided with the second locating part, and described second return unit is located between the second locating part and the second spline housing.
Wherein in an embodiment, described first, second return unit is flexible member.
Wherein in an embodiment, described first return unit is arranged around described jackshaft, and described second return unit is arranged around described power transmission shaft.
Above-mentioned electric hammer, two spline housings and determining spline fitted or separating on power transmission shaft is driven by the cam pin that rotarily drives of knob, control the power distribution of power transmission shaft, different combinations is reached by switching, different element manipulation can be driven, thus different functions can be realized, it is not necessary to baroque shift fork is set and can realize the switching of electric hammer function by two spline housings, simple in construction, function easy switching.
Accompanying drawing explanation
Fig. 1 is embodiment one electric hammer internal structure schematic diagram when pure seeking loopholes；
Fig. 2 is embodiment one electric hammer internal structure schematic diagram when hammer drill shelves；
Fig. 3 is embodiment one electric hammer internal structure schematic diagram when pure hammer shelves；
Fig. 4 is embodiment two electric hammer internal structure schematic diagram when pure seeking loopholes.
Related elements reference numeral in figure is as follows:
100, electric hammer 110, housing 120, knob
122, cam pin 130, power transmission shaft 132, drive gear
134, spline 136, travelling gear the 1362, the 3rd external splines are determined
140, jackshaft the 142, first external splines 144, Oscillating lever bearing
150, first spline housing the 160, first resetting means the 162, first locating part
164, the first return unit 170, driving member the 172, second external splines
174, internal spline the 180, second spline housing the 190, second resetting means
192, second locating part the 194, second return unit
Detailed description of the invention
Below in conjunction with accompanying drawing, the better embodiment of electric hammer is described.
Refer to Fig. 1 to Fig. 3, embodiment one provides a kind of three function electric hammer 100, it is possible to pure seeking loopholes, switching between hammer drill shelves, three kinds of functions of pure hammer shelves.This electric hammer 100 includes housing 110, be arranged on housing 110 outer wall knob 120, it is arranged in housing 110 for the power transmission shaft 130 connecting motor shaft, the jackshaft 140 that is arranged in housing 110.
Power transmission shaft 130 and jackshaft 140 are arranged on the same line, the two dead in line.In Fig. 1 to Fig. 3, the end of power transmission shaft 130 and jackshaft 140 connects together rotatably, specifically, jackshaft 140 is positioned at the left side of power transmission shaft 130, and one end of power transmission shaft 130 extend in the end of jackshaft 140 and passes through the bearings being fixed in jackshaft 140 end, the other end of power transmission shaft 130 is fixed with driving gear 132 to be connected with motor shaft, so can shorten the axial dimension of electric hammer 100.It may be noted that can also be leave certain interval between the end of power transmission shaft 130 and jackshaft 140；Although can also is that the two end is socketed, but the bearing supporting power transmission shaft 130 is not arranged on belled position place.
Power transmission shaft 130 is fixed with and determines spline 134, it is possible to be process spline on axle surface, it is also possible to be fix an external spline member.Jackshaft 140 is provided with the first external splines 142, and is fixed with Oscillating lever bearing 144 on jackshaft 140.Determine spline 134 to be connected by the first spline housing 150 and the first external splines 142 that can move left and right, thus constitute an arrangement of clutch.It is provided with the first resetting means 160 in housing 110, is used for making the first spline housing 150 and the first external splines 142 and determine spline 134 to keep connecting state.First resetting means 160 includes the first locating part 162 being arranged on jackshaft 140, and is placed in the first return unit 164 between the first locating part 162 and the first spline housing 150.First return unit 164 be spring, shell fragment or other can realize the flexible member of elastic reaction.First return unit 164 is arranged around jackshaft 140, with reliable spacing first spline housing 150 on circumference.
Determine that the power transmission shaft 130 on the right side of spline 134 is gone back gap and be socketed with rotary driving member 170.Driving member 170 is provided with the second external splines 172.Determine spline 134 to be connected by the second spline housing 180 and the second external splines 172 that can move left and right, thus constitute an arrangement of clutch.It is provided with the second resetting means 190 in housing 110, is used for making the second spline housing 180 and the second external splines 172 and determine spline 134 to keep connecting state.Second resetting means 190 includes setting the second locating part 192, and is placed in the second return unit 194 between the second locating part 192 and the second spline housing 180.Second return unit 194 be spring, shell fragment or other can realize the flexible member of elastic reaction.Second return unit 194 is arranged around power transmission shaft 130, with reliable spacing second spline housing 180 on circumference.Second locating part 192 is arranged on driving member 170, it is also possible to be provided on power transmission shaft 130.
Knob 120 is connected to the cam pin 122 extending between the first spline housing 150 and the second spline housing 180.So, when knob 120 rotates, being changed by the distance of cam pin 122 just can promote the first spline housing 150 and the second spline housing 180 to move respectively, cam pin 122 promote the first spline housing 150 can make the first spline housing 150 after compressing the first return unit 164 with determine spline 134 depart from coordinates, cam pin 122 promote the second spline housing 180 can make the second spline housing 180 after compressing the second return unit 194 with determine spline 134 disengaging coordinate.
Refer to Fig. 1, knob 120 rotates and makes cam pin 122 be pressed on the first spline housing 150, first spline housing 150 with determine spline 134 and depart from, and now the second spline housing 180 under the effect of the second return unit 194 with determine spline 134 and be combined, second spline housing 180 coordinates with the second external splines 172 on driving member 170 again simultaneously, the power of motor shaft can only be passed to driving member 170 by power transmission shaft 130, without imparting power to jackshaft 140, is achieved in the first function of electric hammer 100.Now, common mode, for making driving member 170 drive an output shaft rotation, makes electric hammer 100 realize pure function of seeking loopholes.
Refer to Fig. 2, the position that the cam pin 122 of knob 120 mediates, neither compress the first spline housing 150, also do not compress the second spline housing 180.Determine spline 134 to be combined with the first external splines 142 by the first spline housing 150, determine spline 134 simultaneously and be combined with the second external splines 172 by the second spline housing 180.That is, now power transmission shaft 130 imparts power to jackshaft 140 and driving member 170 simultaneously, thus realizing the second function of electric hammer 100.Now, the Oscillating lever bearing 144 on jackshaft 140 can drive ram to realize hammer function, and driving member 170 can drive output shaft to realize boring function, and thus electric hammer 100 realizes hammer drill shelves function.
Refer to Fig. 3, the cam pin 122 of knob 120 is positioned at the right side of knob 120 rotation axis, cam pin 122 is pressed on the second spline housing 180, second spline housing 180 with determine spline 134 and depart from, and the first spline housing 150 under the effect of the first return unit 164 with determine spline 134 and be combined, first spline housing 150 the first external splines 142 on jackshaft 140 again is combined simultaneously, makes power transmission shaft 130 can only impart power to jackshaft 140, without imparting power to driving member 170.Now, the Oscillating lever bearing 144 on jackshaft 140 can drive ram to realize hammer function, and thus electric hammer 100 realizes pure hammer shelves function.
Driving member 170 is connected to toothing with same output shaft by gear engagement transmission power.In the present embodiment, driving member 170 and toothing are integral type, it will be appreciated that be actually a gear with external splines for driving member 170.In addition, driving member 170 is connected to toothing and can be realized by multiple elements, refer to Fig. 4, in embodiment two, driving member 170 is provided with except the second external splines 172 except one end, the other end is additionally provided with internal spline 174, and other gap is socketed with a travelling gear 136 with the 3rd external splines 1362 on power transmission shaft 130, and the 3rd external splines 1362 keeps bonding state with internal spline 174.So, the power of power transmission shaft 130 can be passed to travelling gear 136 by the second spline housing 180, and then passes to output shaft, makes electric hammer be in pure function of seeking loopholes.Driving member 170 is connected to toothing and is realized by multiple elements, relatively integral type framework, and driving member 170, travelling gear 136 are more convenient for adopting powder metallurgical technique to prepare, less costly.
Above-mentioned electric hammer 100, cam pin is driven to drive two spline housings coordinate with the spline 134 of determining on power transmission shaft 130 or separate by the rotation process of knob 120, control the power distribution of power transmission shaft 130, different combinations is reached by switching, different element manipulation can be driven, thus different functions can be realized, it is not necessary to baroque shift fork is set and can realize the switching of electric hammer function by two spline housings, simple in construction, function easy switching.
Additionally, in embodiment one, Oscillating lever bearing 144 is fixed on jackshaft 140, and driving member 170 is installed in rotation on power transmission shaft 130, and on the different parts that conventional art is usually on a shaft, assemblage gap installs Oscillating lever bearing 144 and driving member 170；Owing to the length of an axle is relatively long, behind location, two ends, the rigidity of middle part is bad, affects Oscillating lever bearing and drives the location rigidity of gear, and length is longer in addition also results in machining and Technology for Heating Processing complexity；And in the present embodiment, Oscillating lever bearing 144 is fixed on the jackshaft 140 with the first external splines 142, and jackshaft 140 is enclosed within power transmission shaft 130 rotationally, so can achieve the effect that consistent with gap one oscillation bearing being connected to spline of socket on tradition axle, and the framework of two axles is absent from the defect existing for an aforementioned pedestal structure.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
- null1. an electric hammer，Including housing、For connecting the power transmission shaft of motor shaft in being arranged on the knob on housing exterior walls and being arranged on housing，It is characterized in that，The jackshaft being fixed with the first external splines it is additionally provided with in described housing，Jackshaft is fixed with Oscillating lever bearing，Described power transmission shaft is fixed with and determines spline，Described power transmission shaft also gap is socketed with the driving member with the second external splines，Described first external splines and the second external splines are positioned at the both sides determining spline，It is additionally provided with in housing and can move left and right connect the first external splines and determine the first spline housing of spline，And can move left and right connect the second external splines and determine the second spline housing of spline，Described knob is connected to the cam pin extending between the first spline housing and the second spline housing，It is provided with in described housing and makes the first spline housing and the first external splines and determine spline to keep the first return unit of the state that connects，It is additionally provided with in housing and makes the second spline housing and the second external splines and determine spline to keep the second return unit of the state that connects.
- 2. electric hammer according to claim 1, it is characterised in that described driving member is connected to toothing.
- 3. electric hammer according to claim 2, it is characterised in that described driving member is the gear with external splines.
- 4. electric hammer according to claim 2, it is characterised in that described driving member is additionally provided with internal spline, on described power transmission shaft, gap is socketed with the travelling gear with the 3rd external splines, and described 3rd external splines and described internal spline combine.
- 5. electric hammer according to claim 1, it is characterised in that the end of one end of described power transmission shaft and described jackshaft connects together rotatably.
- 6. electric hammer according to claim 5, it is characterised in that one end of described power transmission shaft extend in the end of described jackshaft and passes through the bearings being fixed in jackshaft end.
- 7. electric hammer according to claim 5, it is characterised in that the other end of described power transmission shaft is fixed with driving gear.
- 8. electric hammer according to claim 1, it is characterised in that arranging the first locating part on described jackshaft, described first return unit is located between the first locating part and the first spline housing；Described driving member or power transmission shaft are provided with the second locating part, and described second return unit is located between the second locating part and the second spline housing.
- 9. electric hammer according to claim 8, it is characterised in that described first, second return unit is flexible member.
- 10. electric hammer according to claim 9, it is characterised in that described first return unit is arranged around described jackshaft, described second return unit is arranged around described power transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310253971.2A CN104227670B (en) | 2013-06-24 | 2013-06-24 | Electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310253971.2A CN104227670B (en) | 2013-06-24 | 2013-06-24 | Electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104227670A CN104227670A (en) | 2014-12-24 |
| CN104227670B true CN104227670B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310253971.2A Active CN104227670B (en) | 2013-06-24 | 2013-06-24 | Electric hammer |
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| Country | Link |
|---|---|
| CN (1) | CN104227670B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763610B (en) * | 2016-12-26 | 2023-05-02 | 吉林大华机械制造有限公司 | Rotational speed fluctuation generator |
| CN114211233A (en) * | 2021-12-01 | 2022-03-22 | 贵州航天精工制造有限公司 | Bolt thread sleeve mounting method and bolt thread sleeve mounting tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1502436A (en) * | 2002-11-20 | 2004-06-09 | 株式会社牧田 | Percussion drill |
| CN2707439Y (en) * | 2004-05-25 | 2005-07-06 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
| CN2756399Y (en) * | 2004-11-15 | 2006-02-08 | 铁鎯电动工具有限公司 | Novel three functional light electric hammer |
| CN1775483A (en) * | 2004-11-15 | 2006-05-24 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5116029B2 (en) * | 2008-03-05 | 2013-01-09 | 株式会社マキタ | Hammer drill |
-
2013
- 2013-06-24 CN CN201310253971.2A patent/CN104227670B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1502436A (en) * | 2002-11-20 | 2004-06-09 | 株式会社牧田 | Percussion drill |
| CN2707439Y (en) * | 2004-05-25 | 2005-07-06 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
| CN2756399Y (en) * | 2004-11-15 | 2006-02-08 | 铁鎯电动工具有限公司 | Novel three functional light electric hammer |
| CN1775483A (en) * | 2004-11-15 | 2006-05-24 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
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| Publication number | Publication date |
|---|---|
| CN104227670A (en) | 2014-12-24 |
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