CN203236410U - Impact mechanism for electric tool - Google Patents
Impact mechanism for electric tool Download PDFInfo
- Publication number
- CN203236410U CN203236410U CN 201320218862 CN201320218862U CN203236410U CN 203236410 U CN203236410 U CN 203236410U CN 201320218862 CN201320218862 CN 201320218862 CN 201320218862 U CN201320218862 U CN 201320218862U CN 203236410 U CN203236410 U CN 203236410U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- power transmission
- block hitting
- electric tool
- impact mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model relates to an impact mechanism for an electric tool. The impact mechanism for the electric tool comprises a transmission wheel and a transmission shaft, and one end of the transmission shaft is in drive connection with a transmission mechanism. The impact mechanism for the electric tool is characterized in that the transmission shaft penetrates through the transmission wheel in a rotating mode, the other end of the transmission shaft is connected with a power output piece in a rotating mode, the transmission wheel is provided with a slapping block, two check blocks are symmetrically arranged on the tail portion of the power output piece, the head portion of the slapping block is located between the two check blocks, the transmission shaft is provide with a containing groove for containing steel balls, and a spring is further arranged between the head portion of the slapping block and the transmission shaft. Compared with the prior art, a torsional spring is used by the impact mechanism for the electric tool for storing energy, therefore, the working head of the electric tool can work immediately along with the starting of a motor, and no hysteresis exists. Meanwhile, the problem that energy consumption and waste due to the fact that transmission is carried out depending on friction in the prior art is avoided, and the impact mechanism for the electric tool is low in energy consumption, high in working efficiency and wide in application range, can be used for connection of normal screws, and is particularly suitable for tightening of self-tapping screws.
Description
Technical field
The utility model relates to electric hand tool, specifically refers to a kind of impact mechanism for electric tools.
Background technology
Electric wrench be a kind of take power supply or battery as power, be used for the instrument that tights a bolt.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 impact mechanism for electric tools ", 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 respectively axle are located in two grooves; Two heads that get rid of block hitting connect the power output; Be provided with the first axis hole and the 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 the 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 the 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 larger 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 is so 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 the advantage such as temperature rise is low.But this beater mechanism gets rid of the block hitting startup owing to relying on frictional force to drive, and energy consumption is high, and the action of the output shaft hysteresis certain with respect to electric machine rotation; 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 impact mechanism for electric tools of high efficiency that technical problem to be solved in the utility model is that the present situation for prior art provides.
The utility model solves the problems of the technologies described above the technical scheme that adopts: this impact mechanism for electric tools, comprise drive, the axis direction of described drive is provided with the 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 the 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 the second axis hole, and the other end of described power transmission shaft is contained in described the second axis hole, and has fit clearance between described power transmission shaft and described the second axis hole; The afterbody of described power output is interval with and symmetrically arranged two piece blocks that protrude 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 accommodating 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 outer elastic component of opening 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 affect 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 at the head that gets rid of block hitting and position corresponding to power transmission shaft; 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 utility model utilizes the torsion spring accumulation of energy, so the working head of electric tool can be worked immediately with the startup of motor not hysteresis; Avoided simultaneously the problem of the energy consumption waste that the transmission of dependence frictional force brings in the prior art, 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, so that the job stability of this electric tool is better, impulsive force is larger.Impact mechanism for electric tools provided by the utility model is particularly useful for tapping screw.
Description of drawings
Fig. 1 is the cross-sectional schematic of the utility model embodiment 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 among the utility model embodiment;
Fig. 6 is the cutaway view along D-D line among Fig. 5;
Fig. 7 is the top 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 among Fig. 9 the utility model embodiment;
Figure 10 is the cutaway view of the utility model embodiment medium power output;
Figure 11 is the side view of Fig. 9.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
To shown in Figure 10, this impact mechanism for electric tools comprises such as Fig. 1:
Power transmission shaft 1, the power output shaft that is connected with the driving mechanism of electric tool.The driving mechanism of the electric tool in the present embodiment comprises the motor (not shown) that is arranged in the housing 6, the output shaft connection for transmission mechanism 7 of motor, and an end of power transmission shaft is fixedly connected with the output of transmission mechanism.Transmission mechanism 7 can select according to actual needs of the prior art any one.For the job stability and the service life that guarantee power transmission shaft, the power transmission shaft in the present embodiment is arranged on the bearing 8.The other end of power transmission shaft passes drive 2 and connects power output 3.The afterbody of power transmission shaft is arranged with 11, two storage tanks of two storage tanks, the 11 interior steel balls 13 that are equipped with respectively; The head of power transmission shaft is arranged with two the first stopper slots 12.
Power output 3 is arranged between the working head (not shown) of drive and electric tool, the kinetic energy of beater mechanism is delivered to carries out work on the working head.The power output is arranged with two blocks 31 of protrusion towards the afterbody of drive 2, make on the end face of power output afterbody and form groove structure.Two head captured of getting rid of block hitting are in this groove and between two blocks.The bottom surface of groove is provided with the second axis hole 32 for accommodating power transmission shaft head; The head rotation of power transmission shaft is arranged in the second axis hole 32.
The operation principle of this impact mechanism for electric tools is described as an example of tapping screw example.
When off position, two heads that get rid of block hitting are lower outside of the effect of spring and two blocks of conflicting respectively.
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 getting rid of the head of block hitting, so the power output also rotates under two drives of getting rid of block hitting together thereupon, namely power output and motor rotate synchronously, and 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 dynamic impact problem 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, thus this impact mechanism for electric tools to impact frequency high; 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 impact mechanism for electric tools comprises drive, and the axis direction of described drive is provided with the 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 the 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 the second axis hole, and the other end of described power transmission shaft is contained in described the second axis hole, and has fit clearance between described power transmission shaft and described the second axis hole; The afterbody of described power output is interval with and symmetrically arranged two piece blocks that protrude 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 accommodating 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 outer elastic component of opening of described power transmission shaft.
2. impact mechanism for electric tools 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. impact mechanism for electric tools 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 |
|---|---|---|---|
| CN 201320218862 CN203236410U (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218862 CN203236410U (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203236410U true CN203236410U (en) | 2013-10-16 |
Family
ID=49313739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320218862 Withdrawn - After Issue CN203236410U (en) | 2013-04-25 | 2013-04-25 | Impact mechanism for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203236410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192342A (en) * | 2013-04-25 | 2013-07-10 | 毛富蓉 | Impact mechanism for electric tool |
-
2013
- 2013-04-25 CN CN 201320218862 patent/CN203236410U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192342A (en) * | 2013-04-25 | 2013-07-10 | 毛富蓉 | Impact mechanism for electric tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201881326U (en) | Impact mechanism for electric tools | |
| CN103192342B (en) | Impact mechanism for electric tool | |
| CN203236410U (en) | Impact mechanism for electric tool | |
| CN105619342A (en) | Electric tool | |
| CN201168947Y (en) | Portable electric wrench | |
| EP2439022B1 (en) | Bidirectional transmission power tool | |
| CN103706837B (en) | Miniature precise electric tool | |
| CN203527417U (en) | Electric tool | |
| CN103091100A (en) | Bevel gear coloring tool | |
| CN204802917U (en) | Kingpin formula two way system hydraulic buffer stop | |
| CN103591121B (en) | Eccentric drive shaft | |
| JP2004174656A (en) | Impact tool | |
| CN202768497U (en) | A wall-mounted type connection structure of indoor motor shaft and through-flow wind wheel | |
| CN101491895B (en) | Portable electric wrench and clutch device | |
| CN204018893U (en) | The tapper mechanism of reducing motor and screw tap direct connection | |
| CN110394479A (en) | A kind of brake axle special processing equipment | |
| CN216029570U (en) | Driving device of floating notching machine | |
| CN201217190Y (en) | Transmission structure of electric wrench | |
| CN103591853B (en) | A kind of transmission lock locking mechanism of back starting target | |
| CN208132042U (en) | A kind of electric impact drill that Service Life of Carbon Brush is long | |
| CN205497313U (en) | Electric screw driver mechanical transmission | |
| CN105666393B (en) | A kind of electric screw driver | |
| CN219170737U (en) | Screw driver | |
| CN210023849U (en) | Many batches of first fast switch-over electric hand drills | |
| CN202668440U (en) | Impact structure for electric tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO GEMAY INDUSTRY CO., LTD. Free format text: FORMER OWNER: MAO FURONG Effective date: 20140606 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Mao Furong Inventor after: Yuan Tanghua Inventor before: Mao Furong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315040 NINGBO, ZHEJIANG PROVINCE TO: 315800 NINGBO, ZHEJIANG PROVINCE Free format text: CORRECT: INVENTOR; FROM: MAO FURONG TO: MAO FURONG YUAN TANGHUA |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140606 Address after: 315800 room 5, building 22, 603 Henghe Road, Beilun District, Zhejiang, Ningbo Patentee after: Ningbo Jiemei Import & Export Co., Ltd. Address before: 315040, 201, Lane 1, historian lane, Jiangdong District, Zhejiang, Ningbo Patentee before: Mao Furong |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131016 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |