CN103042509A - Power tool and operating head or adapter applied to same - Google Patents
Power tool and operating head or adapter applied to same Download PDFInfo
- Publication number
- CN103042509A CN103042509A CN 201210578918 CN201210578918A CN103042509A CN 103042509 A CN103042509 A CN 103042509A CN 201210578918 CN201210578918 CN 201210578918 CN 201210578918 A CN201210578918 A CN 201210578918A CN 103042509 A CN103042509 A CN 103042509A
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- CN
- China
- Prior art keywords
- output shaft
- power tool
- projection
- annulus
- working head
- 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.)
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Abstract
The invention discloses a power tool and operating head or adapter applied to the same. The power tool is provided with an output shaft which is used for mounting an operating head and driving the operating head to move. At least one driving part fitted to the operating head axially extends from the tail end of the output shaft. The driving part comprises at least two protrusions, at least including, first protrusions and second protrusions. The first protrusions and the second protrusions are located on different circles which center on axis of the output shaft, so that larger torque can be transmitted. In addition, at least two layers of protrusions can share more fit clearances, so that transmission is more stable.
Description
Technical field
The present invention relates to a kind of power tool and be applied to working head and the adapter of this power tool.
Background technology
In the prior art, the operation principle of power tool is that the axial line that output shaft centers on self is done oscillating motion, thereby drives the annex working head oscillating motion that is installed in the output shaft end.Common annex working head comprises straight blade, saw blade, triangle frosted dish and shovel type scraper etc.Therefore, when the user after output shaft is equipped with different annex working heads, can realize multiple different operating function, as sawing, cut, grind, scrape etc., to adapt to different work.
Summary of the invention
In order to address the above problem, to the invention provides a kind of power tool and be applied to working head and the adapter of this power tool.
The technical solution used in the present invention is, a kind of power tool has for the installment work head and drives the cephalomotor output shaft of described work, and described output shaft terminal shaft is to the drive division that is extended with at least one and described working head and connects; Wherein, described drive division comprises at least two adjacent and independent the first projection and the second projections that arrange, described the first projection and described the second projection all have solstics and the closest approach that meshes with the installing hole of described working head, the distance of dividing the axle center that is clipped to described output shaft take solstics and the closest approach of described the first projection consists of the first annulus as two concentric circles of radius, the distance of dividing the axle center that is clipped to described output shaft take solstics and the closest approach of described the second projection consists of the second annulus as two concentric circles of radius, and described the first annulus is not identical with described the second annulus region.
The invention has the beneficial effects as follows: by in the terminal two-layer at least projection that arranges on being positioned at take the axle center of output shaft as the different annular in the center of circle of the output shaft of power tool, correspondingly, construction section at corresponding working head arranges two-layer at least installing hole, perhaps at corresponding adapter two-layer at least projection or groove is set.Two-layer at least projection by output shaft or adapter end cooperates respectively with the two-layer at least installing hole of working head, because the different layers projection is positioned on the different annular take output shaft as the center of circle, can lengthen the length of line of action of working head and output shaft or adapter, the moment of torsion that makes output shaft or adapter be passed to working head increases greatly, and then improves the operating efficiency of working head; The second, two-layer at least projection increases the contact point of output shaft and working head, thereby can share more fit clearance, makes that transmission is more stable, reliability is higher; The 3rd, the protruding moment of torsion that transmits of different layers is different, and the wearing and tearing that are subject to are corresponding also different, and after wherein one deck projection cooperated inefficacy with working head, other layer projection still can the normal delivery moment of torsion.
The specific embodiment
A kind of oscillating-type power tool (such as Multi Role Aircraft) or rotary-type grinding power tool (such as sander), and new interface scheme stable, that high pulling torque transmits is provided.By two-layer at least projection being set in that the output shaft of power tool is terminal, and make two-layer projection be positioned at axle center take output shaft on the different annular in the center of circle; Correspondingly, at corresponding working head or adapter at least two auxiliary sections that the projection with above-mentioned output shaft connects respectively are set, thereby by the engagement of projection with the auxiliary section, make output shaft tightr with cooperating of working head or adapter, stable, can transmit the moment of torsion high than the existing interface scheme simultaneously.Obviously, two annulus can be overlapped, and also can be that the interval arranges, as long as or fully overlapping.
This Multi Role Aircraft comprises main frame, can be installed on the main frame and by the working head of host driven, and is fixed on the locking part on the main frame.Working head is a kind of straight blade, for a person skilled in the art, is easy to expect, working head also can be other annex, such as saw blade, emery disc, scraper etc.Housing and output shaft.Output shaft vertically is arranged at the inside of housing, and its end extends the housing certain distance.Be provided with motor in the housing and be connected to the motor shaft of motor and the eccentric drive mechanism between the output shaft, motor shaft drives output shaft by eccentric drive mechanism, and makes output shaft center on the central axis X rotation oscillating traverse motion of himself.Eccentric drive mechanism is the common structure that industry is applied to swing-type power tool, and in this not go into detail.
During host work, so that output shaft rotates oscillating traverse motion around its central axis X with about 5000 to the 30000 times high-frequency of per minute, and be maintained at about the little pendulum angle between 0.5 to 7 degree.
Locking part passes working head and then is connected in the output shaft, thereby working head is fixed on the output shaft end.This locking part comprises bolt and is set in pressing plate on the bolt.Pressing plate is an elastomeric pad, and be fixedly connected with relative with bolt, can not be split.After locking part was tightened, the pressing plate resilient abutment can prevent owing to back and forth even in the situation of impact type load causing working head to get loose in a side of working head.
Principle of the present invention and embodiment as previously mentioned, yet protection scope of the present invention has more than and is limited to above specific embodiment.The embodiment that goes out shown in the present is schematic rather than restrictive.Other staff can change under the enlightenment prerequisite of the present invention and change not breaking away from, and adopt the method that is equal to therewith, and the method that all these change, change and are equal to all drops within claims scope that limits such as the present invention.
Claims (5)
1. power tool, have for the installment work head and drive the cephalomotor output shaft of described work, the drive division that described output shaft terminal shaft connects to the installing hole that is extended with at least one and described working head, it is characterized in that: described drive division comprises at least two adjacent and independent the first projection and the second projections that arrange, described the first projection and described the second projection all have solstics and the closest approach that meshes with the installing hole of described working head, the distance of dividing the axle center that is clipped to described output shaft take solstics and the closest approach of described the first projection consists of the first annulus as two concentric circles of radius, the distance of dividing the axle center that is clipped to described output shaft take solstics and the closest approach of described the second projection consists of the second annulus as two concentric circles of radius, and described the first annulus is not identical with described the second annulus region.
2. power tool according to claim 1, it is characterized in that: the quantity of described drive division is at least two, and is evenly distributed on the circumference of described output shaft.
3. power tool according to claim 1, it is characterized in that: described the first annulus and described the second annulus are overlapped.
4. power tool according to claim 1 is characterized in that: interval setting between described the first annulus and described the second annulus.
5. power tool according to claim 1 is characterized in that: the axial height of described the first projection and described the second projection does not wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210578918 CN103042509A (en) | 2012-12-28 | 2012-12-28 | Power tool and operating head or adapter applied to same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210578918 CN103042509A (en) | 2012-12-28 | 2012-12-28 | Power tool and operating head or adapter applied to same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103042509A true CN103042509A (en) | 2013-04-17 |
Family
ID=48055484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210578918 Withdrawn CN103042509A (en) | 2012-12-28 | 2012-12-28 | Power tool and operating head or adapter applied to same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103042509A (en) |
-
2012
- 2012-12-28 CN CN 201210578918 patent/CN103042509A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130417 |