CN103192342A - Impact mechanism for electric tool - Google Patents
Impact mechanism for electric tool Download PDFInfo
- Publication number
- CN103192342A CN103192342A CN2013101487867A CN201310148786A CN103192342A CN 103192342 A CN103192342 A CN 103192342A CN 2013101487867 A CN2013101487867 A CN 2013101487867A CN 201310148786 A CN201310148786 A CN 201310148786A CN 103192342 A CN103192342 A CN 103192342A
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- Prior art keywords
- transmission shaft
- power transmission
- block hitting
- electric tool
- axis hole
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 59
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000010079 rubber tapping Methods 0.000 abstract description 6
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to an impact mechanism for an electric tool. The impact mechanism comprises a driving wheel and a driving shaft, wherein one end of the driving shaft is connected with a driving mechanism in a driving manner. The impact mechanism is characterized in that the other end of the driving shaft, which passes through the driving wheel in a rotating manner, is rotatably connected with a power output part; a slapping block is arranged on the driving wheel; two check blocks are symmetrically arranged at the tail of the power output part and the head of the slapping block is positioned between the two check blocks; a containing groove used for containing steel balls is formed in the driving shaft; and a spring is also arranged between the head of the slapping block and the driving shaft. Compared with the prior art, the impact mechanism has the advantages that the torsional spring is used for energy storage, so that a working head of the electric tool can immediately work along with the starting of a motor without delay; and the problem that energy is wasted due to adoption of driving based on a friction force in the prior art is avoided; moreover, the impact mechanism is low in energy consumption, high in working efficiency and wide in application range, can be used for connection of common screws, and is especially suitable for being used for tightening self-tapping screws.
Description
Technical field
The present invention relates to electric hand tool, specifically refer to a kind of electric tool beater mechanism.
Background technology
Electric wrench is a kind ofly to be power, to be used for the instrument tight a bolt with power supply or battery.In the prior art, electric wrench generally includes the motor that is connected with power supply, and by the transmission mechanism that motor drives, described transmission mechanism transfers energy to and gets rid of in the block hitting, by getting rid of block hitting to the bump of the working head task of finishing the work.The beater mechanism delivery efficiency of existing electric wrench reduces, and moment of torsion is little.
Granted publication number is that the Chinese utility model patent of CN201881326U discloses " a kind of electric tool beater mechanism ", it comprises and is arranged in the casing by motor-driven transmission mechanism, gets rid of block hitting and power output, describedly gets rid of block hitting and is driven and driven by described transmission mechanism and connect described output shaft; It is characterized in that described transmission mechanism comprises drive, described motor-driven connects the power transmission shaft of this drive, is arranged with two grooves on the perisporium of described drive, and two afterbodys that get rid of block hitting axle respectively are located in two grooves; Two heads that get rid of block hitting connect the power output; Be provided with first axis hole and second axis hole corresponding to described afterbody and head interval of getting rid of block hitting on the described power transmission shaft, be equipped with spring in described first axis hole, the afterbody of conflicting respectively and get rid of block hitting at two in the two ends of spring is provided with in described second axis hole and can makes two to get rid of the magnet that block hitting is moved simultaneously.The electric wrench that this utility model provides is provided with two with beater mechanism and gets rid of block hitting, and utilize spring energy-storage, utilize magnet to make two to get rid of block hitting and throw away simultaneously, under less power of motor effect, can obtain bigger power output, and two are got rid of block hitting and are symmetrical arranged, and the dynamic balancing in the course of work also is guaranteed.The setting of clutch between drive and the motor makes that the work of beater mechanism is more stable; With the engaged element of steel ball as clutch, long service life, cost is low and the course of work in advantage such as temperature rise is low.But this beater mechanism gets rid of the block hitting startup owing to rely on frictional force to drive, the energy consumption height, and the action of output shaft is rotated certain hysteresis with respect to motor; Simultaneously, because output shaft is to rely on the alternating action of spring and magnetic part to come work under the driving of motor, so the action of output shaft is intermittent, operating efficiency is not high, simultaneously because having brought a fatal problem, be exactly that this beater mechanism can only be used for screw is assembled to existing screw, and to helpless from the merit screw.
Summary of the invention
It is a kind of applied widely and energy consumption is low, the electric tool beater mechanism of high efficiency that technical problem to be solved by this invention is that the present situation at prior art provides.
The present invention solves the problems of the technologies described above the technical scheme that adopts: this electric tool beater mechanism, comprise drive, the axis direction of described drive is provided with first axis hole of perforation, be provided with power transmission shaft in this first axis hole, an end of power transmission shaft connects the transmission mechanism of this electric tool and drives rotation by transmission mechanism; It is characterized in that: described power transmission shaft rotates and is arranged in described first axis hole, and torsion spring set is located on the described power transmission shaft, and an end of torsion spring is fixedly connected on the described power transmission shaft, and the other end of torsion spring is fixedly connected on the described drive; Described drive is provided with groove, and the afterbody that gets rid of block hitting rotates by connecting axle and is arranged in the described groove; Described power output is provided with second axis hole, and the other end of described power transmission shaft is contained in described second axis hole, and has fit clearance between described power transmission shaft and described second axis hole; The afterbody of described power output is interval with protrude and symmetrically arranged two blocks towards described drive, and the described head of block hitting that gets rid of is between two blocks; Described power transmission shaft is provided with the storage tank for ccontaining steel ball, be contained in the afterbody of the described power transmission shaft of steel ball subtend in the storage tank, also be provided with between the described head that gets rid of block hitting and the described power transmission shaft and make the described block hitting head that gets rid of with respect to the elastic component of outer of described power transmission shaft.
In the such scheme, describedly get rid of block hitting and can be designed as one, use one and get rid of the frequency that impacts that block hitting does not influence this beater mechanism, but be applied to impulsive force on the working head can be slightly a little less than.Preferably, described groove has two, is symmetricly set on the described drive; Accordingly, describedly get rid of block hitting and have two, be separately positioned in two grooves.Use two to get rid of block hitting and be symmetrical arranged, impulsive force is stronger, and dynamic balancing is better.
Elastic component in the such scheme can be stage clip or torsion spring.For stage clip, the two ends conflict of stage clip is got final product in the position of the head that gets rid of block hitting and power transmission shaft correspondence; When using torsion spring, torsion spring set can be located on the power transmission shaft, the two ends of torsion spring are separately fixed at torsion spring and get rid of on the head position of block hitting.
Compared with prior art, the present invention utilizes the torsion spring accumulation of energy, so the working head of electric tool can be worked not hysteresis immediately with the startup of motor; Avoided the problem of the energy consumption waste that the transmission of dependence frictional force brings in the prior art simultaneously, energy consumption is low, and high efficiency, and is applied widely, not only can be used for the connection of plain screw, and especially be suitable for tightening of tapping screw.In the preferred version, two designs of getting rid of block hitting make that the job stability of this electric tool is better, and impulsive force is bigger.Electric tool provided by the present invention is particularly useful for tapping screw with beater mechanism.
Description of drawings
Fig. 1 is the cross-sectional schematic of embodiment of the invention assembly structure;
Fig. 2 is the cutaway view along A-A line among Fig. 1;
Fig. 3 is the cutaway view along B-B line among Fig. 1;
Fig. 4 is the cutaway view along C-C line among Fig. 1;
Fig. 5 is the longitudinal sectional view of drive in the embodiment of the invention;
Fig. 6 is the cutaway view along D-D line among Fig. 5;
Fig. 7 is the vertical view of Fig. 5;
Fig. 8 is the cutaway view (when getting rid of block hitting disengaging block) along A-A line among Fig. 1;
Get rid of the floor map of block hitting in Fig. 9 embodiment of the invention;
Figure 10 is the cutaway view of embodiment of the invention medium power output;
Figure 11 is the side view of Fig. 9.
The specific embodiment
Describe in further detail below in conjunction with the present invention of accompanying drawing embodiment.
To shown in Figure 10, this electric tool comprises with beater mechanism as Fig. 1:
Be that example illustrates that this electric tool is with the operation principle of beater mechanism with the tapping screw.
When off position, two heads that get rid of block hitting are opened and two blocks of conflicting respectively outside under the effect of spring.
Motor gets electric rotation, drives power transmission shaft by transmission mechanism and rotates together, and when power transmission shaft rotated, drive rotated with power transmission shaft under the effect of torsion spring, and two are got rid of block hitting and also rotate together thereupon; Conflict two blocks owing to get rid of the head of block hitting, thus the power output under two drives of getting rid of block hitting, also rotate together thereupon, i.e. power output and motor synchronous rotation, the working head that acts on the screw turns screw.
Along with the rotation of screw, the suffered resistance of working head is increasing, is delivered to the resistance that gets rid of in the block hitting and increases, thereby the velocity of rotation of the drive that gets rid of the block hitting place is slowed down with respect to power transmission shaft, torsion spring distortion accumulation of energy; Meanwhile, the evagination that is squeezed of two steel balls in the storage tank, get rid of block hitting from the outside extruding of the afterbody that gets rid of block hitting, get rid of block hitting and rotate around connecting axle, get rid of the inside extrusion spring of head of block hitting, yoke (as shown in Figure 8) between disengaging and the block, under the effect of torsion spring, moment quick racing, drive and to get rid of block hitting and impact power output shaft, the working head that power output shaft is driven impacts screw in rotary screw, force tapping screw be screwed into workpiece.
Finish once impact after, the head that gets rid of block hitting resets under the effect of spring, transposition is conflicted on two blocks, the afterbody that gets rid of block hitting then inwardly rotates, two steel balls enter in separately the storage tank, the afterbody that gets rid of block hitting resets.
Along with being rotated further of motor, this beater mechanism repeats above-mentioned action, and screw is shot in the workpiece.
The power output rotates half cycle and namely impacts once, so this electric tool impacts the frequency height with beater mechanism; And utilize the torsion spring accumulation of energy in the whole process, energy consumption is low; Avoided the high problem of energy consumption that relies on the frictional force transmission to cause in the prior art; And applied widely, not only can be used for the connection of plain screw, and especially be suitable for tightening of tapping screw.
Claims (3)
1. an electric tool beater mechanism comprises drive, and the axis direction of described drive is provided with first axis hole of perforation, is provided with power transmission shaft in this first axis hole, and an end of power transmission shaft connects the transmission mechanism of this electric tool and drives rotation by transmission mechanism; It is characterized in that: described power transmission shaft rotates and is arranged in described first axis hole, and torsion spring set is located on the described power transmission shaft, and an end of torsion spring is fixedly connected on the described power transmission shaft, and the other end of torsion spring is fixedly connected on the described drive; Described drive is provided with groove, and the afterbody that gets rid of block hitting rotates by connecting axle and is arranged in the described groove; Described power output is provided with second axis hole, and the other end of described power transmission shaft is contained in described second axis hole, and has fit clearance between described power transmission shaft and described second axis hole; The afterbody of described power output is interval with protrude and symmetrically arranged two blocks towards described drive, and the described head of block hitting that gets rid of is between two blocks; Described power transmission shaft is provided with the storage tank for ccontaining steel ball, be contained in the afterbody of the described power transmission shaft of steel ball subtend in the storage tank, also be provided with between the described head that gets rid of block hitting and the described power transmission shaft and make the described block hitting head that gets rid of with respect to the elastic component of outer of described power transmission shaft.
2. electric tool beater mechanism according to claim 1 is characterized in that described groove has two, is symmetricly set on the described drive; Accordingly, describedly get rid of block hitting and have two, be separately positioned in two grooves.
3. electric tool beater mechanism according to claim 1 and 2 is characterized in that described elastic component is stage clip or torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148786.7A CN103192342B (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310148786.7A CN103192342B (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103192342A true CN103192342A (en) | 2013-07-10 |
| CN103192342B CN103192342B (en) | 2015-04-15 |
Family
ID=48715251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310148786.7A Expired - Fee Related CN103192342B (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103192342B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662494A (en) * | 2014-06-30 | 2017-05-10 | 罗伯特·博世有限公司 | Testing device for testing screw systems, and testing method for this purpose |
| CN109065340A (en) * | 2018-08-22 | 2018-12-21 | 扬州鑫宝利金属制品有限公司 | A kind of electric power vibration absorbing ring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811797A (en) * | 1987-10-21 | 1989-03-14 | Nauchno-Proizvodstvennoe Obiedinenie Po Mekhanizirovannomu Stroitelnomu Instrumentru I Otdelochnym Mashinam | Impact wrench |
| CN201881326U (en) * | 2010-11-09 | 2011-06-29 | 徐雪峰 | Impact mechanism for electric tools |
| EP2439021A1 (en) * | 2009-06-03 | 2012-04-11 | Kuken Co. Ltd | Impact wrench |
| CN202517459U (en) * | 2012-01-18 | 2012-11-07 | 董旭 | Impact mechanism for electric tool |
| CN203236410U (en) * | 2013-04-25 | 2013-10-16 | 毛富蓉 | Impact mechanism for electric tool |
-
2013
- 2013-04-25 CN CN201310148786.7A patent/CN103192342B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811797A (en) * | 1987-10-21 | 1989-03-14 | Nauchno-Proizvodstvennoe Obiedinenie Po Mekhanizirovannomu Stroitelnomu Instrumentru I Otdelochnym Mashinam | Impact wrench |
| EP2439021A1 (en) * | 2009-06-03 | 2012-04-11 | Kuken Co. Ltd | Impact wrench |
| CN201881326U (en) * | 2010-11-09 | 2011-06-29 | 徐雪峰 | Impact mechanism for electric tools |
| CN202517459U (en) * | 2012-01-18 | 2012-11-07 | 董旭 | Impact mechanism for electric tool |
| CN203236410U (en) * | 2013-04-25 | 2013-10-16 | 毛富蓉 | Impact mechanism for electric tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662494A (en) * | 2014-06-30 | 2017-05-10 | 罗伯特·博世有限公司 | Testing device for testing screw systems, and testing method for this purpose |
| CN106662494B (en) * | 2014-06-30 | 2019-08-16 | 罗伯特·博世有限公司 | For checking the check device of screw and for this inspection method |
| CN109065340A (en) * | 2018-08-22 | 2018-12-21 | 扬州鑫宝利金属制品有限公司 | A kind of electric power vibration absorbing ring |
| CN109065340B (en) * | 2018-08-22 | 2020-11-24 | 扬州鑫宝利金属制品有限公司 | Electric power vibration damping ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103192342B (en) | 2015-04-15 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO GEMAY INDUSTRY CO., LTD. Free format text: FORMER OWNER: MAO FURONG Effective date: 20140530 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Mao Furong Inventor after: Yuan Tanghua Inventor before: Mao Furong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: MAO FURONG TO: MAO FURONG YUAN TANGHUA Free format text: CORRECT: ADDRESS; FROM: 315040 NINGBO, ZHEJIANG PROVINCE TO: 315800 NINGBO, ZHEJIANG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140530 Address after: 315800 room 5, building 22, 603 Henghe Road, Beilun District, Zhejiang, Ningbo Applicant after: NINGBO GEMAY INDUSTRY Co.,Ltd. Address before: 315040, 201, Lane 1, historian lane, Jiangdong District, Zhejiang, Ningbo Applicant before: Mao Furong |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 |