CN106002857B - A kind of attachment means of quick-replaceable work head - Google Patents
A kind of attachment means of quick-replaceable work head Download PDFInfo
- Publication number
- CN106002857B CN106002857B CN201610354834.1A CN201610354834A CN106002857B CN 106002857 B CN106002857 B CN 106002857B CN 201610354834 A CN201610354834 A CN 201610354834A CN 106002857 B CN106002857 B CN 106002857B
- Authority
- CN
- China
- Prior art keywords
- work head
- drive shaft
- pivoted housing
- groove
- attachment means
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F1/00—Combination or multi-purpose hand tools
- B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
- B25F1/04—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements wherein the elements are brought into working positions by a pivoting or sliding movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a kind of quick-replaceable work head attachment means, for with endoporus fin（8）Work head（4）Connection, it is characterised in that：Including being inserted into the head that works（4）In fixation pivoted housing（2）, and for being sleeved on fixed pivoted housing（2）In drive shaft（1）；Fixed pivoted housing（2）Outer wall offer it is at least one can be with endoporus fin（8）The groove being engaged, the groove face of groove（2.1）On be machined with the through hole of radial direction（2.5）, through hole（2.5）Middle activity is equipped with a lock piece；Drive shaft（1）On be machined with locking working face（1.2）With release working face（1.1）.The beneficial effects of the invention are as follows：Locking device is run there is motion association with machine, and work head is only in lockup state, and work head could be worked by driving, so fundamentally having prevented the possibility of locking failure in operation.
Description
Technical field
The invention belongs to power tools technology field, and in particular to a kind of attachment means of quick-replaceable work head.
Background technology
The subsidiary work head throw of in the market, because auxiliary work head type is a lot, it is often necessary to change to answer
With different working environment and object, the fixation substitute mode of traditional screw+spanner, cumbersome, time-consuming, and operator makes
It is low with inconvenience, efficiency.
Application No. " 201380063983.7 ", it is entitled " to be used to make master device and tube rotatable communication
The patent of invention of axle ", it discloses a kind of axle, for realizing that master device is connected with tube.In the invention, master device is led to
Cross axle to be connected with tube, coordinate successively by axially assembling in connection procedure and realize locking connection.And master device connects
By portion the axle can be driven to rotate, and then requirement.But due to running status to be pivoted, and locking device is then
Assemble vertically, it is seen that both do not have motion association.Easily cause to lock when locking device is by external force from axial direction
Tight failure, causes danger so as to trigger work head to come off at work.In addition, the structure of the related fittings in the invention
Also it is complex, improve difficulty of processing and production cost.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of connection dress of quick-replaceable work head
Put, make locking device be run with machine there is motion association, work head is only in lockup state, and work head could be driven
And work, so fundamentally having prevented the possibility of locking failure in operation.
For solve prior art problem, the invention discloses a kind of quick-replaceable work head attachment means, for band
The work head for having endoporus fin connects, including the fixation pivoted housing being inserted into work head, and for being sleeved on fixed turn
Drive shaft in set；The outer wall of fixed pivoted housing offers at least one groove that can be engaged with endoporus fin, on the groove face of groove
Be machined with the through hole of radial direction, in through hole activity be equipped with a lock piece；The different locking of off-axis heart size is machined with drive shaft
Working face and release working face, during drive shaft turns, lock piece contacted with locking working face be in off-axis heart remote position from
And locking is realized, lock piece is contacted in the nearer position of the off-axis heart with release working face so as to realize unblock；Fixed pivoted housing with
Connected between drive shaft by elastic tension part, elastic tension part can apply to fixed pivoted housing and drive shaft in the locked condition
Circumferential active force prevents from unlocking.
Preferably, elastic tension part is torsion spring, and the front end of torsion spring is connected with the rear end of fixed pivoted housing, rear end and drive shaft connect
Connect.
Preferably, the rear end of fixed pivoted housing is provided with two limiting sections, sets a lock pin in drive shaft, the front end of torsion spring with
The side of one of limiting section abuts, and lock pin can abut in locking state with the side of another limiting section transmits torsion.
Preferably, the quantity of groove is four, and is machined with the through hole of radial direction on the groove face of a groove at least in；It is fixed
Part on pivoted housing between groove and groove is engaged as bearing-surface with the endoporus hole wall for the head that works.
Preferably, the groove face of groove is plane and vertical with its side wall.
Preferably, it is orthogonal plane to lock working face and release working face, both junction processing roundings.
Preferably, lock piece is steel ball or steel pin.
Preferably, in addition to jump ring, the front end of drive shaft are stretched out from the front end of fixed pivoted housing and install the jump ring, prevent solid
Determine pivoted housing and axial separation occurs with drive shaft.
The invention also discloses a kind of electric tool, including a driver element and above-mentioned attachment means, driver element and company
Driving axis connection in connection device simultaneously drives its rotation.
The device have the advantages that：
1. locking device is run with machine, there is motion association, work head to be only in lockup state, and work head ability
Worked by driving, so fundamentally having prevented the possibility of locking failure in operation.
2. the elastic force of fixed pivoted housing and drive shaft by torsion spring when without artificial manipulate is made as tensioner using torsion spring
Tensioning is realized, so that it is guaranteed that work head can also keep locking under non-operating state.
3. pass through the effect of lock pin and limiting section so that drive shaft can preferably transmit torsion, drive the rotation of work head.
4. individual groove more than, which is circumferentially uniformly distributed and corresponded with endoporus fin, to be coordinated, and is produced key mating reaction, is on the one hand increased
Strong ties fastness, on the other hand then meet requirement for dynamic balance, prevent eccentric vibrating.
5. lock working face and discharge the junction processing rounded corner between working face so that drive shaft is in rotation process
In, the more preferable change-over contact face of lock piece energy, so as to quickly realize locking or unlock.
6. the use of jump ring, avoiding in the process of running, drive shaft occurs to be axially moved so as to mutually with fixed pivoted housing
Separation, causes transmission failure.
Brief description of the drawings
Fig. 1 is the overall structure figure of electric tool in the present invention；
Fig. 2 is the assembling schematic diagram of attachment means in the present invention；
Fig. 3 is the decomposing schematic representation of attachment means in the present invention；
Fig. 4 is the stereogram under attachment means released state in the present invention；
Fig. 5 is the radial view under attachment means released state in the present invention；
Fig. 6 is the axial view under attachment means released state in the present invention；
Fig. 7 is the stereogram under attachment means locking state in the present invention；
Fig. 8 is the radial view under attachment means locking state in the present invention；
Fig. 9 is the axial view under attachment means locking state in the present invention.
Reference：
1 drive shaft；1.1 release working faces；1.2 locking working faces；2 fix pivoted housing；2.1 groove face；2.2 side wall；2.3 first
Limiting section；2.4 second limiting sections；2.5 through hole；3 steel balls；4 work heads；5 lock pins；6 torsion springs；7 jump rings；8 endoporus fins；9 instruments
Casing；10 electric tools；11 axles lock button.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As shown in Figures 1 to 3, a kind of electric tool 10, including instrument casing 9 and motor in instrument casing 9,
The output end for the driver element that reducing gear, switch etc., wherein motor are formed with reducing gear is connected with an attachment means.
The attachment means are used to be connected with the work with endoporus fin 8 first 4, and it includes being inserted into work first 4
Fixation pivoted housing 2, and for be sleeved in fixed pivoted housing 2 provide rotary power drive shaft 1.
The outer wall of fixed pivoted housing 2 circumferentially uniformly offers four grooves that can be engaged with endoporus fin 8, the groove face of groove
The through hole 2.5 of radial direction is machined with 2.1, in through hole 2.5 activity be equipped with a lock piece.The groove face 2.1 of groove be plane and and its
Side wall 2.2 is vertical, and the part between groove and groove is engaged as bearing-surface with the endoporus hole wall of work first 4.
Locking working face 1.2 and release working face 1.1 are machined with drive shaft 1, locks distance of the working face 1.2 away from axle center
More than release distance of the working face 1.1 away from axle center so that two working faces can be promoted when being contacted respectively with lock piece its
Lifted in through hole 2.5, locking working face 1.2 and release working face 1.1 are orthogonal plane, and both junction processing is fallen
Fillet, be easy to drive shaft 1 rotate when lock piece more easily change-over contact face.
Connected between fixed pivoted housing 2 and drive shaft 1 by elastic tension part, specific connected mode is：Elastic tension part is
Torsion spring 6, the rear end of fixed pivoted housing 2 are provided with the first limiting section 2.3 and the second limiting section 2.4, a lock pin 5 are set in drive shaft 1,
The front end of torsion spring 6 abuts with the side of the second limiting section 2.4, and lock pin 5 can be with the side of the first limiting section 2.3 in locking state
Face, which abuts, transmits torsion, so that torsion spring 6 can apply circumferential active force to fixed pivoted housing 2 and drive shaft 1 in the locked condition
Prevent from unlocking.
The front end of drive shaft 1 is stretched out from the front end of fixed pivoted housing 2, and jump ring 7 is installed on the extension, prevents from fixing
With drive shaft 1 axial separation occurs for pivoted housing 2.
In order to more easily realize the cooperation transition of lock piece and relevant work face, lock piece can also elect as steel ball 3 or
Steel pin.
The operation principle and process of the present invention
It is counterclockwise that the work of drive shaft 1, which turns to, by taking Fig. 1 as an example, in figure, drives work first 4 also to rotate counterclockwise.No matter
Unblock or lock, be required for pressing lower axle lock button 11 and lock drive shaft 1, then just with rotation work first 4 and phase can be passed through
Unblock or locking are realized to rotating.
Released state：
As shown in Figs. 4-6, fixed pivoted housing 2 inserts first 4 endoporus of work, and endoporus fin 8 is inserted in corresponding groove, and endoporus is convex
The front end face of rib 8 is confined planes.Rotation work first 4 makes the position of itself and drive shaft 1 change so that steel ball 3 and release work
Make face 1.1 to be in contact, now steel ball 3 is in crosses steel ball 3, work first 4 close to the position of axis, the endoporus fin 8 of work first 4
It is able in fully-inserted pivoted housing and main shaft, work first 4 is completely inserted into working condition, installment state is very firm, now steel
Ball 3 get along well work first 4 interfere, work in this state first 4 be free to assembly and disassembly.
Locking state：
It is as shown in Figs. 7-9, rotation work first 4, make the position of itself and drive shaft 1 change so that steel ball 3 and locking
Working face 1.2 is in contact, now steel ball 3 be in away from axis position, steel ball 3 contacted with the front end face on endoporus fin 8 from
And axial limiting is realized, now work first 4 can not separate with fixed pivoted housing 2 and drive shaft 1.At the same time, the rotation of drive shaft 1
The side that lock pin 5 be result in the first limiting section 2.3 abuts, the spacing pass that drive shaft 1 passes through the limiting section 2.3 of lock pin 5 and first
Frenulum starts building to make first 4 to rotate counterclockwise.In the process of running, due under this angle the locking working face 1.2 of drive shaft 1 begin
It is to withstand on steel ball 3 eventually, as long as so machine operation, would not occur work first 4 and be come off because locking discharges.
When drive shaft 1 stops and is in the lock state, the cooperation that work first 4 makes drive shaft 1 and steel ball 3 is rotated counterclockwise
Face changes, and steel ball 3 declines close to axis, while will be drawn outside work first 4, and the endoporus fin 8 of work first 4, which crosses steel ball 3, makes work
First 4 extract vertically, realize the dismounting of work first 4.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of attachment means of quick-replaceable work head, for with endoporus fin（8）Work head（4）Connection, it is special
Sign is：Including being inserted into the head that works（4）In fixation pivoted housing（2）, and for being sleeved on fixed pivoted housing（2）In drive
Moving axis（1）；Fixed pivoted housing（2）Outer wall offer it is at least one can be with endoporus fin（8）The groove being engaged, the groove face of groove
（2.1）On be machined with the through hole of radial direction（2.5）, through hole（2.5）Middle activity is equipped with a lock piece；Drive shaft（1）On be machined with
The different locking working face of off-axis heart size（1.2）With release working face（1.1）, drive shaft（1）During rotation, lock piece and locking
Working face contact is in off-axis heart remote position so as to realize locking, and lock piece is with discharging working face（1.1）Contact be in from
The nearer position in axle center unlocks so as to realize；Fixed pivoted housing（2）With drive shaft（1）Between connected by elastic tension part, elasticity
Tensioner can be in the locked condition to fixed pivoted housing（2）And drive shaft（1）Applying circumferential active force prevents from unlocking.
2. the attachment means of a kind of quick-replaceable work head according to claim 1, it is characterised in that elastic tension part is
Torsion spring（6）, torsion spring（6）Front end and fixed pivoted housing（2）Rear end connection, rear end and drive shaft（1）Connection.
A kind of 3. attachment means of quick-replaceable work head according to claim 2, it is characterised in that fixed pivoted housing（2）
Rear end be provided with two limiting sections, drive shaft（1）One lock pin of upper setting（5）, torsion spring（6）Front end and one of limiting section
Side abut, lock pin（5）It can be abutted in locking state with the side of another limiting section and transmit torsion.
4. the attachment means of a kind of quick-replaceable work head according to claim 1, it is characterised in that the quantity of groove is four
It is individual, and the groove face of a groove at least in（2.1）On be machined with the through hole of radial direction（2.5）；Fixed pivoted housing（2）Upper groove and groove it
Between part as bearing-surface with work head（4）Endoporus hole wall be engaged.
A kind of 5. attachment means of quick-replaceable work head according to claim 4, it is characterised in that the groove face of groove
（2.1）For plane and with its side wall（2.2）Vertically.
A kind of 6. attachment means of quick-replaceable work head according to claim 1, it is characterised in that locking working face
（1.2）With release working face（1.1）For orthogonal plane, both junction processing roundings.
7. the attachment means of a kind of quick-replaceable work head according to claim 1, it is characterised in that lock piece is steel ball
（3）Or steel pin.
8. the attachment means of a kind of quick-replaceable work head according to claim 1, it is characterised in that also including jump ring
（7）, drive shaft（1）Front end from fixed pivoted housing（2）Front end stretch out and the jump ring be installed（7）, prevent from fixing pivoted housing（2）With drive
Moving axis（1）Generation axial separation.
A kind of 9. electric tool（10）, including a driver element, it is characterised in that：Also include according to any institute of claim 1 to 8
A kind of attachment means for quick-replaceable work head stated, driver element and the drive shaft in attachment means（1）Connect and drive it
Rotation.
A kind of 10. electric tool according to claim 9（10）, it is characterised in that also it can lock or unclamp including one
The locking button of drive shaft（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354834.1A CN106002857B (en) | 2016-05-26 | 2016-05-26 | A kind of attachment means of quick-replaceable work head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354834.1A CN106002857B (en) | 2016-05-26 | 2016-05-26 | A kind of attachment means of quick-replaceable work head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106002857A CN106002857A (en) | 2016-10-12 |
| CN106002857B true CN106002857B (en) | 2017-11-28 |
Family
ID=57094283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610354834.1A Expired - Fee Related CN106002857B (en) | 2016-05-26 | 2016-05-26 | A kind of attachment means of quick-replaceable work head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106002857B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879651B (en) * | 2021-09-30 | 2023-02-24 | 英业达(重庆)有限公司 | Connection structure convenient to inhale dismouting of header subassembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237659A (en) * | 1979-03-22 | 1980-12-09 | Dynabrade, Inc. | Quick change adapter for mounting rotatable grinding elements |
| DE4019727A1 (en) * | 1990-06-21 | 1992-02-27 | Licentia Gmbh | Quick-change chuck for portable power drill - has collet which closes onto spindle and eliminates play |
| CN101530995A (en) * | 2008-02-05 | 2009-09-16 | 罗伯特·博世有限公司 | Rotary tool system with centering member |
| CN201816046U (en) * | 2009-08-12 | 2011-05-04 | 布莱克和戴克公司 | Tool for power tool |
| CN103433844A (en) * | 2013-09-07 | 2013-12-11 | 江苏海建股份有限公司 | Grinding device with quick-disassembly structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100813495B1 (en) * | 2006-02-21 | 2008-03-17 | (주)썬무브 | Conjoining apparatus of grinder wheel |
-
2016
- 2016-05-26 CN CN201610354834.1A patent/CN106002857B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237659A (en) * | 1979-03-22 | 1980-12-09 | Dynabrade, Inc. | Quick change adapter for mounting rotatable grinding elements |
| DE4019727A1 (en) * | 1990-06-21 | 1992-02-27 | Licentia Gmbh | Quick-change chuck for portable power drill - has collet which closes onto spindle and eliminates play |
| CN101530995A (en) * | 2008-02-05 | 2009-09-16 | 罗伯特·博世有限公司 | Rotary tool system with centering member |
| CN201816046U (en) * | 2009-08-12 | 2011-05-04 | 布莱克和戴克公司 | Tool for power tool |
| CN103433844A (en) * | 2013-09-07 | 2013-12-11 | 江苏海建股份有限公司 | Grinding device with quick-disassembly structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106002857A (en) | 2016-10-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20171128 |