CN103372679B - Portable circular saw - Google Patents
Portable circular saw Download PDFInfo
- Publication number
- CN103372679B CN103372679B CN201210107615.5A CN201210107615A CN103372679B CN 103372679 B CN103372679 B CN 103372679B CN 201210107615 A CN201210107615 A CN 201210107615A CN 103372679 B CN103372679 B CN 103372679B
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- CN
- China
- Prior art keywords
- protective cover
- portable circular
- saw blade
- circular saw
- lower protective
- 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 present invention provides a kind of Portable circular saw, including：Drive system；Saw blade, circumferencial direction are provided with cutting edge, are driven by above-mentioned drive system and rotated；Protective cover, rounded, in the cutting edge of circumferencial direction parcel saw blade, including upper protective cover and lower protective cover, lower protective cover can rotate relative to upper protective cover, be released the cutting edge of saw blade；Wherein, be provided with a drive device on lower protective cover, in embedded cutting can with cut workpiece contradict and drive under protective cover moved relative to upper protective cover.With this automatic lower protective cover of rotation, save operator and rotate lower protective cover manually.
Description
Technical field
The present invention relates to a kind of Portable circular saw, more particularly to a kind of Portable circular saw with lower protective cover.
Background technology
Existing various portable circular sawing machines are largely provided with lower protective cover, and the lower protective cover can be when saw blade work
Masking is from the part that annular saw machine bottom board extends, to protect user not hurt by saw blade.Lower protective cover can be around portable circle
The output shaft center rotating of saw, when circular sawing machine makees embedded cutting work, it is necessary to which first protective cover rotates one jiao manually by under
Degree, the part saw blade under the bottom plate of circular sawing machine is set to expose from lower protective cover.Now, saw blade can be with cut workpiece
Surface contacts, and starts to cut work.In cutting process, lower protective cover can contact with the surface of cut workpiece, and with
The increase of the depth of cut of saw blade, and further push by the surface of cut workpiece and rotate bigger angle.With this, ensure
Saw blade can complete cutting task.And after circular sawing machine completes cutting task, when withdrawing cut workpiece, lower protective cover meeting
Original position is returned in the presence of elastic component, to cover the part saw blade extended from annular saw machine bottom board.
Above-mentioned Portable circular saw needs the dynamic lower protective cover of turn on the offensive before embedded cutting is made, and increases in actually grasping
The trouble of operator and the danger hurt by saw blade.
It is therefore desirable to be able to provide a kind of Portable circular saw to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of Portable circular saw for overcoming drawbacks described above.
In the present invention, there is provided a kind of Portable circular saw, including：Drive system；Saw blade, circumferencial direction are provided with
Cutting edge, driven by above-mentioned drive system and rotated；Protective cover, it is rounded, in the cutting edge of circumferencial direction parcel saw blade, bag
Protective cover and lower protective cover are included, lower protective cover can rotate relative to upper protective cover, be released the cutting edge of saw blade；Its
In, a drive device is provided with lower protective cover, can be contradicted with cut workpiece and drive lower protective cover relative to upper protective cover
Motion.
The present invention enables it to be opened automatically in cutting by setting drive device on lower protective cover compared with prior art
Lower protective cover is opened, saw blade is discharged from lower protective cover and directly performs cutting task.
Brief description of the drawings
In the embodiments of the invention that above and other feature and advantage of the present invention will describe below in reference to accompanying drawing
To being better understood from.Wherein：
Fig. 1 is the front view for showing the Portable circular saw according to the present invention, to show that Portable circular saw is performing
State before cutting task；
Fig. 2 is another angle schematic perspective view according to the Portable circular saw of the present invention；
Fig. 3 is the front view for showing the Portable circular saw according to the present invention, to show Portable circular saw will
Perform the state of cutting task；
Fig. 4 is the front view for showing the Portable circular saw according to the present invention, to show that Portable circular saw is starting
Perform the state of cutting task.
Embodiment
Describe with reference to the accompanying drawings according to the preferred embodiment of the present invention Portable circular saw 100.
As shown in figure 1, the present invention Portable circular saw 100, it include be used for by operator grasp handle 1 including
Upper protective cover 21 and the protective cover 2 of lower protective cover 22, the saw blade 3 being contained in protective cover, the drive by Portable circular saw 100
The main shaft 4 and the bottom plate 5 for being abutted with the surface 61 of cut workpiece 6 that dynamic system (non-label) drives and rotated.It is above-mentioned
Saw blade 3 is installed on main shaft 4, can be rotated with the rotation of main shaft 4, so as to realize the purpose of cutting.
Shown as shown in Figure 2, Figure 3 and Figure 4, the drive system of above-mentioned Portable circular saw 100 is installed on protective cover 21 backward
In Fang Yanshen housing (non-label), its bearing of trend is in orthogonal state with the plane where protective cover 2.Above-mentioned handle 1
Also extend to be formed from housing, positioned at the top of the circular sawing machine 100 of the present invention, person's operation easy to operation.Main shaft 4 connects with drive system
Connect, can be driven and rotate by drive system, saw blade 3 is installed on main shaft 4, can be rotated and be rotated with main shaft 4.Above-mentioned handle
1st, the position between protective cover 2, main shaft 4 and saw blade 3 is fastened to each other, can be in a displacement body.
Above-mentioned bottom plate 5, which is provided with, to be used to abut with the rotating shaft 51 of upper protective cover 21 rotation connection, with the surface of cut workpiece 6
Bottom surface 54, adjust saw blade 3 depth of cut depth adjustment support (not shown) and cutting mouth 52.Above-mentioned circular sawing machine
During 100 execution cutting task, saw blade 3 contacts through cutting mouth 52 with the surface 61 of cut workpiece 6, so as to reach cutting
Effect.
As shown in Figures 1 and 2, the semicircular in shape of lower protective cover 22 of above-mentioned protective cover 2, protective cover 21 can be gone up relatively along main shaft
4 rotate.Upper protective cover 21 can wrap up the cutting edge 31 of saw blade 3 in a circumferential direction with lower protective cover 22, prevent from grasping with this
Person is cut sword 31 and hurt.Dynamic clamping head and quiet clamping head (not shown) is provided between upper protective cover 21 and lower protective cover 22, to be protected in guarantee
The relative position of shield 21 and lower protective cover 22, ensures the cutting edge 31 of saw blade 3 by upper protective cover 21 and lower protective cover with this
22 parcels.Certainly, this dynamic clamping head and quiet clamping head can also be installed on other positions, as long as ensureing lower 21 flexible reset force of protective cover
.The lower section of lower protective cover 22 is provided with an opening 220, and opening 220 includes first at 221 and second 222.First side 221
It is located at the both sides of saw blade 3 respectively with the second side 222, wherein, the first side 221 is located at the rear of saw blade 3, the second 222, side
In the front of saw blade 3.As shown in Figure 1-2, first be represented by dotted lines is at 221 to the second 222 to more left extension, the first side
221 and second are made up of connecting portion 223 between side 222.Lower protective cover 22 is provided with a drive device 224 at opening 220, drives
Dynamic device 224 includes a circular arc end 225 from the extension formation of lower protective cover 22.
In use, the circular sawing machine 100 of the present invention is positioned on the surface 61 of cut workpiece 6.Operator hold handle 1 to
Lower pressing, above-mentioned handle 1, protective cover 2, drive system and saw blade 3 rotate down along the opposed bottom 5 of rotating shaft 51, downward
During rotation, the drive device 224 of lower protective cover 22 fills with lower protective cover to the direction displacement close to bottom plate 5, driving
224 end 225 is put to first pass through the cutting mouth 52 of bottom plate 5 and contact with the surface 61 of cut workpiece 6.As shown in figure 1, driving
The bearing of trend of device 224 forms one to the angle for having deviation with vertically downward direction.The end 225 of drive device 224 with
After being cut the contact of surface 61 of workpiece 6, operator continues to press down on, because of above-mentioned angle, the end 225 of drive device 224
It can to the right be slided in being cut on the surface 61 of workpiece 6, and lower protective cover 22 can be driven along the direction A phases shown in Fig. 1
Rotated for upper protective cover 21.As lower protective cover 22 is along the A rotation processes of direction, the connecting portion 223 of lower protective cover 22 will be with
The surface 61 for being cut workpiece 6 contacts, and in rotation process, gradually instead of the end 225 of drive device 224 in cut work
Slided on the surface 61 of part 6, so as to drive lower protective cover 22 to be rotated along direction A.Now, the end 225 of drive device 224 will be from
Open the surface 61 of cut workpiece 6.In above-mentioned lower protective cover 22 along the A rotation processes of direction, the cutting edge 31 of saw blade 3 by by
Step discharges from the opening 220 of lower protective cover 22, and as the pressing of operator is gradually to close to the direction position of bottom plate 5
Move, until the cutting edge 31 of saw blade 3 contacts through the cutting mouth 52 of bottom plate 5 with the surface 61 of cut workpiece 6, and start into
Row cutting.In above-mentioned cutting process, operator can need pressing handle according to depth of cut, reach saw blade 3 required
The position for the depth of cut wanted.During saw blade 3 moves downward and performs cutting task, if desired for larger depth of cut
Demand, the first side 221 of lower protective cover 22 may gradually replace connecting portion 223 in quilt with the rotation of lower protective cover 22
Cut and slided on the surface 61 of workpiece 6, so as to further drive lower protective cover 22 to be rotated along direction A, ensure that saw blade 3 has with this
There are enough cutting edges 31 to be discharged from lower protective cover 22, to reach the depth of cut of needs.After cutting task is completed,
Operator, discharge press pressure, make to state handle 1, protective cover 2, drive system and saw blade 3 along the opposed bottom 5 of rotating shaft 51 to
Upper rotation, in rotation process, lower protective cover 22 is answered along direction opposite above-mentioned direction A in the presence of dynamic clamping head and quiet clamping head
Position, and wrap up the cutting edge 31 of saw blade 3 in a circumferential direction again.
The end 225 of the drive device 224 of lower protective cover 22 is circular arc, positioned at the lower section of connecting portion 223, is existed between the two
Lower protective cover 22 along the A rotation processes of direction, can on the surface 61 of workpiece 6 is cut gradual seamlessly transitting successively.First
Side 221 is circular arc, in smoothing junction with connecting portion 223, makes both on the surface 61 of workpiece 6 is cut with this, with lower guarantor
The rotation of shield 21 and gradual seamlessly transitting successively.Said structure is ensureing that protective cover 22 is along direction A's under driving
Rotation process is smoothed out, and can ensure rotate automatically when lower protective cover 22 and cutting beginning, to ensure cutting for saw blade 3
Cut sword 31 to discharge from lower protective cover 22, perform cutting task.
Although only certain exemplary embodiments of this invention is described in detail here, they give just for the sake of the purpose explained
Go out, and it is not considered that they are construed as limiting to the scope of the present invention.Without departing from the spirit and scope of the present invention, respectively
Kind is replaced, change and transformation can be contemplated out.
Claims (10)
1. a kind of Portable circular saw, including：
Drive system；
Saw blade, circumferencial direction are provided with cutting edge, are driven by above-mentioned drive system and rotated；
Protective cover, it is rounded, in the cutting edge of circumferencial direction parcel saw blade, including upper protective cover and lower protective cover, lower protection
Cover can rotate relative to upper protective cover, be released the cutting edge of saw blade；
Wherein, a drive device is provided with lower protective cover, when in use, Portable circular saw is placed on cut workpiece
On surface so that the surface of drive device and cut workpiece contradicts and drives lower protective cover to be moved relative to upper protective cover；
The Portable circular saw includes a bottom plate for being used to abut cut workpiece surface, and the saw blade is performing cutting times
It is entirely located in before business above the bottom plate.
2. Portable circular saw according to claim 1, it is characterised in that the drive device is drive rod, the drive
The bearing of trend of lever has angle with vertically downward direction shape.
3. Portable circular saw according to claim 2, it is characterised in that the lower section that the lower protective cover includes is provided with one
Opening, opening include first while, second while and connect the first connecting portion while with second, first distinguishes position while with second
In the both sides of saw blade, connecting portion is below the cutting edge of saw blade.
4. Portable circular saw according to claim 3, it is characterised in that described first prolongs more to the left while than second
Stretch, in arc-shaped.
5. Portable circular saw according to claim 3, it is characterised in that the drive device is arranged under lower protective cover
Close to opening, the end of drive device is circular arc for side.
6. Portable circular saw according to claim 5, it is characterised in that the bottom plate be provided with cutting mouth and with
In the rotating shaft with above-mentioned upper protective cover rotation connection, above-mentioned protective cover, saw blade and drive system can be together along rotating shaft phases
Bottom plate is rotated.
7. Portable circular saw according to claim 6, it is characterised in that the drive device is as protective cover is along rotating shaft
, can be in it after the end of drive device contradicts through the surface of cutting mouth and cut workpiece to when being rotated close to bottom plate direction
It is upper to slide and drive lower protective cover to be moved relative to upper protective cover, released with the opening of this cutting edge from the lower protective cover that make saw blade
Release.
8. Portable circular saw according to claim 7, it is characterised in that the saw blade turns axially adjacent to bottom plate on edge
During rotation, after the cutting edge of the saw blade discharged from lower protective cover contacts through cutting mouth with the surface of cut workpiece,
Perform cutting task.
9. Portable circular saw according to claim 1, it is characterised in that from the upper protective cover extension formed with shell
Body, above-mentioned drive system are installed in housing.
10. Portable circular saw according to claim 9, it is characterised in that Portable circular saw includes one handle, from
Above-mentioned housing extends to be formed, and is gripped for operator, and cutting task is performed to operate Portable circular saw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210107615.5A CN103372679B (en) | 2012-04-12 | 2012-04-12 | Portable circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210107615.5A CN103372679B (en) | 2012-04-12 | 2012-04-12 | Portable circular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103372679A CN103372679A (en) | 2013-10-30 |
| CN103372679B true CN103372679B (en) | 2017-12-01 |
Family
ID=49458857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210107615.5A Expired - Fee Related CN103372679B (en) | 2012-04-12 | 2012-04-12 | Portable circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103372679B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811488A (en) * | 1987-11-04 | 1989-03-14 | Press Reuben F | Portable saw with movable warning |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444414A1 (en) * | 1984-12-04 | 1986-06-12 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circular handsaw with a device for reducing the rotational speed |
| US5832614A (en) * | 1997-05-20 | 1998-11-10 | S-B Power Tool Company | Remote lower guard lift lever mechanism for circular saws |
| DE19831166A1 (en) * | 1998-07-11 | 2000-01-13 | Bosch Gmbh Robert | Articulated guard cover for hand-held circular saw machine |
| US6543143B2 (en) * | 2001-04-06 | 2003-04-08 | Black & Decker Inc. | Metal cutting circular saw with integral sight window |
| US20070163129A1 (en) * | 2005-12-29 | 2007-07-19 | Vogelgesang Joseph C | Depth-of-cut gauge for a power saw |
-
2012
- 2012-04-12 CN CN201210107615.5A patent/CN103372679B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811488A (en) * | 1987-11-04 | 1989-03-14 | Press Reuben F | Portable saw with movable warning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103372679A (en) | 2013-10-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Granted publication date: 20171201 Termination date: 20200412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |