CN203611222U - Cutter guiding structure - Google Patents
Cutter guiding structure Download PDFInfo
- Publication number
- CN203611222U CN203611222U CN201320868344.5U CN201320868344U CN203611222U CN 203611222 U CN203611222 U CN 203611222U CN 201320868344 U CN201320868344 U CN 201320868344U CN 203611222 U CN203611222 U CN 203611222U
- Authority
- CN
- China
- Prior art keywords
- spheroid
- radial hole
- output shaft
- cutter
- hole
- 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
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Abstract
The utility model provides a cutter guiding structure. The cutter guiding structure is characterized in that the edge of the cutter cannot interfere with a bulge to prevent the cutter from entering an output shaft, so that the reliability of an electric tool is improved; the cutter guiding structure comprises the output shaft (1) and a driving gear (2) of the electric tool, wherein the output shaft (1) is provided with a shaft hole (3), the shaft hole (3) is provided with an axial bulge (4), the cutter guiding structure also comprises at least one ball body (5), the output shaft (1) is provided with a radial hole (6), and the radial hole (6) penetrates through the axis of the axial bulge (4) or the radial hole (6) to be intersected with the extension line of the axial bulge (4); the ball body (5) is arranged in the radial hole (6), the diameter of the opening, positioned in the shaft hole (3), of the radial hole (6) is smaller than the diameter of the ball body (5), so that part of the ball body (5) can be exposed out of the opening; a limit part is sleeved on the output shaft (1) to limit the ball body (5) within the radial hole (6).
Description
Technical field
The utility model relates to a kind of electric tool, is specifically a kind of cutter guide frame.
Background technology
It is by cutter being pushed in output shaft axis hole that prior art has a kind of cutter and being connected of output shaft of electric tool, the object that coordinates to realize circumferential transmission of the outer-hexagonal of cutter and multiple projections of the centripetal circumferential distribution of axis hole, because cutter has polygon cross section, like this, cutter is in the process that is pushed into axis hole, the seamed edge of cutter may mutually be interfered with projection and stop cutter to enter output shaft, and then cannot complete being connected of cutter and output shaft, cause electric tool fault, reduced the reliability of electric tool.
Utility model content
Technical problem to be solved in the utility model is, overcome the defect of prior art, provides a kind of seamed edge of cutter can mutually not interfere with projection and stop cutter to enter the cutter guide frame of output shaft, thereby improved the reliability of electric tool.
For solving the problems of the technologies described above, the utility model proposes a kind of cutter guide frame, it comprise electric tool output shaft, be set in the travelling gear on output shaft, output shaft is provided with the axis hole for being connected with cutter, axis hole is provided with centripetal circumferential equally distributed multiple axial projection, it also comprises at least one spheroid, output shaft is provided with the radial hole being communicated with axis hole, this radial hole is crossing with axial projection extension line through the axis of axial projection or this radial hole, and radial hole is corresponding one by one with spheroid; Spheroid is placed in radial hole, and the diameter of the opening that is arranged in axis hole place of radial hole is less than the diameter of spheroid, and for a part for spheroid is exposed to this opening, whole spheroid is unlikely to from radial hole to fall into axis hole; Output sleeve is provided with locating part so that spheroid is limited in to radial hole.
Adopt after said structure, the utlity model has following advantage: structures shape of the present utility model the part that is exposed in axis hole of spheroid be positioned on same axis with axial projection, when cutter will be in the time that the seamed edge that is pushed into axis hole and cutter will be interfered with axial projection, the leading portion part of cutter seamed edge can enter smoothly axis hole and first offset with the part of spheroid because diameter is less, under the guide effect of the arc surface of the part of this spheroid, cutter can circumferentially turn an angle, thereby make the back segment part of the cutter seamed edge that diameter is larger naturally avoid axial projection, thereby make whole cutter enter smoothly axis hole and finally complete and being connected of output shaft, therefore the seamed edge that the utlity model has cutter can mutually not interfered with projection and stop cutter to enter the advantage of output shaft, thereby improve the reliability of electric tool.
As improvement, spheroid is upper and lower symmetrical two, and radial hole is upper and lower symmetrical two, and like this, counterweight is more even, leads more responsive effective.
As improvement, locating part is travelling gear, and travelling gear inner ring is provided with the axial groove matching with spheroid, like this, is more conducive to the utility model compact conformation.
Accompanying drawing explanation
Fig. 1 is the end view of the utility model cutter guide frame.
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional schematic.
Fig. 3 is that the V-V of Fig. 2 is to cross-sectional schematic.
Fig. 4 is the structural representation of cutter.
As shown in the figure: 1, output shaft, 2, travelling gear, 3, axis hole, 4, axial projection, 5, spheroid, 6, radial hole, 7, groove, 8, seamed edge leading portion part, 9, seamed edge back segment part.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The utility model cutter guide frame, it comprise electric tool output shaft 1, be set in the travelling gear 2 on output shaft 1, output shaft 1 is provided with the axis hole 3 for being connected with cutter, axis hole 3 is provided with centripetal circumferential equally distributed multiple axial projection 4, it also comprises at least one spheroid 5, output shaft 1 is provided with the radial hole 6 being communicated with axis hole 3, and this radial hole 6 is crossing with axial projection 4 extension lines through the axis of axial projection 4 or this radial hole 6, and radial hole 6 is corresponding one by one with spheroid 5; Spheroid 5 is placed in radial hole 6, and the diameter of the opening that is arranged in axis hole 3 places of radial hole 6 is less than the diameter of spheroid 5, and for a part for spheroid 5 is exposed to this opening, whole spheroid 5 is unlikely to from radial hole 6 to fall into axis hole 3; Output shaft 1 is arranged with locating part so that spheroid 5 is limited in to radial hole 6.
Locating part is travelling gear 2, and travelling gear 2 inner rings are provided with the axial groove 7 matching with spheroid 5.
As seen from Figure 4, the diameter of the seamed edge leading portion part 8 of cutter is less, and the diameter of seamed edge back segment part 9 is large, and seamed edge leading portion part 8 front ends are also with certain circular arc guiding.
Claims (3)
1. a cutter guide frame, it comprises the output shaft (1) of electric tool, be set in the travelling gear (2) on output shaft (1), output shaft (1) is provided with the axis hole (3) for being connected with cutter, axis hole (3) is provided with centripetal circumferential equally distributed multiple axial projection (4), it is characterized in that, it also comprises at least one spheroid (5), output shaft (1) is provided with the radial hole (6) being communicated with axis hole (3), this radial hole (6) is crossing with axial projection (4) extension line through the axis of axial projection (4) or this radial hole (6), radial hole (6) is corresponding one by one with spheroid (5), spheroid (5) is placed in radial hole (6), and the diameter that is arranged in the opening that axis hole (3) locates of radial hole (6) is less than the diameter of spheroid (5), and for a part for spheroid (5) is exposed to this opening, whole spheroid (5) is unlikely to from radial hole (6) to fall into axis hole (3), output shaft (1) is arranged with locating part so that spheroid (5) is limited in to radial hole (6).
2. cutter guide frame according to claim 1, is characterized in that, spheroid (5) is upper and lower symmetrical two, and radial hole (6) is upper and lower symmetrical two.
3. cutter guide frame according to claim 2, is characterized in that, locating part is travelling gear (2), and travelling gear (2) inner ring is provided with the axial groove (7) matching with spheroid (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320868344.5U CN203611222U (en) | 2013-12-26 | 2013-12-26 | Cutter guiding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320868344.5U CN203611222U (en) | 2013-12-26 | 2013-12-26 | Cutter guiding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203611222U true CN203611222U (en) | 2014-05-28 |
Family
ID=50763901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320868344.5U Expired - Fee Related CN203611222U (en) | 2013-12-26 | 2013-12-26 | Cutter guiding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203611222U (en) |
-
2013
- 2013-12-26 CN CN201320868344.5U patent/CN203611222U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20181226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |