CN105921812B - Hand electric annular saw - Google Patents
Hand electric annular saw Download PDFInfo
- Publication number
- CN105921812B CN105921812B CN201610453554.6A CN201610453554A CN105921812B CN 105921812 B CN105921812 B CN 105921812B CN 201610453554 A CN201610453554 A CN 201610453554A CN 105921812 B CN105921812 B CN 105921812B
- Authority
- CN
- China
- Prior art keywords
- shield
- saw
- bottom plate
- hand electric
- annular saw
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
- B23D45/16—Hand-held sawing devices with circular saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/06—Safety devices for circular cutters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a kind of hand electric annular saws, it includes the interior casing (1) for being equipped with driving mechanism, the output shaft for extending casing (1), saw blade (2), the first shield (3) and bottom plate (4) for accommodating saw blade (2) being arranged on output shaft, and first shield (3) and casing (1) are fixed；It is characterized by: the electric circular saw further includes the second shield (5) that can surround the sawtooth position of the saw blade (2) above bottom plate (4) when annular saw works or stops, second shield (5) and bottom plate (4) are fixed.The hand electric annular saw amount of parts is few, structure is simple, avoids lower shield using structures, good reliability such as springs, so that whole annular saw is assembled and is designed and all bring convenience.
Description
Technical field
The present invention relates to power tools technology fields, are especially a kind of hand electric annular saw.
Background technique
Electric circular saw is a kind of tool for driving saw blade to carry out sawing action by transmission mechanism as power using motor, tool
There is the features such as safe and reliable, structurally reasonable, work efficiency is high.
There is a electric circular saw currently on the market, it includes casing, the output shaft for extending the casing, is arranged described
Saw blade on output shaft and the shield for accommodating the saw blade；Shield is made of dynamic shield and quiet shield, for protecting
Saw blade prevents injury accident when operation.Quiet shield is connect with casing, is moved shield and is rotated along saw blade, and leans on torsion spring pressure
Automatic covering saw blade.Dynamic shield is locked or is unlocked by the switch being located on casing, moves shield in the locked state, circle
Saw can not push use, and in the unlocked state, annular saw could push normal use.There are many connection types of dynamic shield, and first
Kind: the bottom of dynamic shield and the bottom plate of annular saw are rotatablely connected, and are then resetted again by torsional spring；Second: the pendulum of dynamic shield
Dynamic center and the output shaft position of casing are rotatablely connected, and are resetted by torsional spring；The third: the oscillation center of dynamic shield with
The output shaft position of casing is rotatablely connected, and the bottom plate of the bottom and annular saw of moving shield is equipped with guide frame, moves shield by multiple
Position is driven by determining shield.
The electric circular saw of the above structure has the disadvantage in that
1, in processing, dynamic shield is needed individually to process, the knot for having rotation connection between shield and bottom plate is moved when installation
Structure, but also need torsional spring cooperate or guiding mechanism cooperation, cause in this way amount of parts is more, structure is more complex, assemble
Also complicated.
2, it due to being pressed down each time using annular saw, is required to dynamic shield and swings primary, make shield swing for a long time in this way,
Annular saw use process generates the impurity such as many powder, these situations most likely result in torsional spring failure or rotational structure card
Dead situations such as perhaps guide frame is stuck thus make shield block or can not normal reset, substantially reduce electric circular saw
Reliability.
3, when annular saw assembles and designs, need to accurately calculate the resetting time of dynamic shield by the torsion of torsional spring, from
And it can be only achieved safety requirements.In addition assembly needs to accurately calculate dynamic shield and determines the gap of shield, to can just make to determine shield
It will not collide with dynamic shield when pushing；Again due to moving the oscillation center of shield and the output shaft position rotation connection of casing, in this way
Design and assembled require very high precision and durability degree, can just make shield for a long time normal swing, these make to
Design and assembly bring difficulty.
Summary of the invention
The technical problem to be solved by the present invention is to provide that a kind of amount of parts is few, structure is simple, lower shield is avoided to use
The structures such as spring, good reliability make the hand electric annular saw that whole annular saw assembles and design is all brought convenience.
The technical scheme is that providing a kind of hand electric annular saw having following structure, it includes interior is equipped with
The casing of driving mechanism, the output shaft for extending casing, the saw blade being arranged on output shaft, the first shield for accommodating saw blade
And bottom plate, first shield are fixed with casing；The electric circular saw further includes can be the bottom of by when annular saw works or stops
The second shield that the sawtooth position of saw blade above plate surrounds, second shield are fixed with bottom plate.
First shield is enclosed in outside the second shield when hand electric annular saw works to lower swing.
Second shield is integrated with bottom plate.
The inside of second shield is equipped with the notch that passes through for hand electric circular saw blade, and the lower part of the notch is the
The side wall of two shields, the notch are aligned with the saw kerf on bottom plate.
The top of the interior plate of second shield is equipped with the limit to match for the security protection bolt of hand electric annular saw
Bit architecture.
The position limiting structure refers to that the top of the interior plate of second shield is equipped with the safety for hand electric annular saw
The plane that the bottom of protection bolt offsets.
The side wall of second shield is in the arc to match with the inner wall of the first shield.
The second shield positioned at the two sides of notch forms front and rear panels, and the front and rear panels are respectively forwardly close to annular saw
The side in the center of circle extends and protrudes from the upper plane of bottom plate, the extended segment of the front and rear panels be all provided with it is fluted, the groove
Bottom most position is above the upper plane of bottom plate.
After using the above structure, the invention has the following advantages that
1, in processing, due to lower shield and bottom plate be it is fixed, in this way can be with time processing, and no longer need to install
Rotational structure, torsional spring or guide frame etc., such amount of parts is few, structure is simple, assembly also facilitates.
2, due to lower shield and bottom plate be it is fixed, pressed down each time using annular saw in this way, lower shield be also it is motionless,
And upper shield can cover on outside lower shield when to lower swing, can cover outside lower shield；Again due to eliminating torsional spring, rotation knot
Perhaps guide frame is avoided that torsional spring failure to structure or rotational structure is stuck or guide frame is stuck, prevents
Stop shield is blocked or is split by annular saw bullet, these can increase the reliability of electric circular saw.
3, due to lower shield and bottom plate be it is fixed, eliminate the design and dress of torsional spring, rotational structure or guide frame
Match, and when in use, only upper shield is to swing, in this way when annular saw assembles and designs, without considering answering for lower shield
The position time can bring convenience as long as design upper shield avoids colliding with lower shield to design and assembly in this way.
Detailed description of the invention
Fig. 1 is the bottom plate of hand electric annular saw of the invention and the structural schematic diagram of lower shield.
Fig. 2 is the bottom plate of hand electric annular saw of the invention and another viewing angle constructions schematic diagram of lower shield.
Fig. 3 is the structural schematic diagram of the working condition of hand electric annular saw of the invention.
Fig. 4 is the structural schematic diagram of the non-working condition of hand electric annular saw of the invention.
Fig. 5 is another viewing angle constructions schematic diagram of the non-working condition of hand electric annular saw of the invention.
It is as shown in the figure:
1, casing, 2, saw blade, the 3, first shield, 4, bottom plate, 4.1, saw kerf, the 5, second shield, 5.1, notch, 5.2, side
Wall, 5.3, plane, 5.4, foreboard, 5.5, back plate, 5.6, groove, 6, safety pin.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, hand electric annular saw of the invention, it includes interior equipped with driving mechanism
Casing 1, the output shaft for extending casing 1, the saw blade being arranged on output shaft 2, the first shield 3 for accommodating saw blade 2 and
Bottom plate 4, first shield 3 and casing 1 are fixed；One end of first shield 3 and bottom plate 4 are rotatablely connected, and the two is equipped with and turns round
Spring, shaft axis are A axis, and the driving mechanism in casing 1 drives output shaft rotation, and output shaft drives saw blade 2 to rotate, the first shield 3
Saw blade 2 is covered, security protection, bottom plate 4 and the contact with platform cut are played the role of, bottom plate 4 is equipped with and passes through for saw blade 2
Long hole.The second shield of the embodiment of the present invention 5 is integrated with bottom plate 4, certainly can be with the second shield 5 and bottom plate 4
It is connected by screw bolts, one or more of snapping or bonding etc. combination are fixedly connected.The electric circular saw further includes
The second shield 5 that the sawtooth position of the saw blade 2 above bottom plate 4 can be surrounded when annular saw works or stops, described second
Shield 5 and bottom plate 4 are fixed.Second shield 5 is located at the same side with casing 1, when working or stop due to annular saw, the first shield
There is one piece of gap to keep the sawtooth of saw blade exposed between 3 and floor 4, there is security risk in this way, so increased second shield, 5 energy
The side of the sawtooth of the saw blade of the gap and front and back are surrounded, avoid being exposed at outer.
First shield 3 is enclosed in outside the second shield 5 when hand electric annular saw works to lower swing.That is hand-held
When electric circular saw works, casing 1 drives the first shield 3 and saw blade 2 to press down on, at this point, the first shield 3 gradually covers the second shield
Cover 5, understands, that is, the second shield 5 is gradually extend into the first shield 3 in turn.
The inside of second shield 5 is equipped with the notch 5.1 passed through for hand electric circular saw blade, the notch 5.1
Lower part is the side wall 5.2 of the second shield 5, which is aligned with the saw kerf 4.1 on bottom plate 4.When electric circular saw works, saw blade 2
When down, the notch 5.1 of the second shield 5 can have space to rotate for saw blade 2, and the side wall 5.2 of the second shield 5 can block saw blade 2
Sawtooth position, play safety protection function in this way.
The top of the interior plate of second shield 5 is equipped with the limit to match for the security protection bolt of hand electric annular saw
Bit architecture.The position limiting structure refers to that the top of the interior plate of second shield 5 is equipped with the safety for hand electric annular saw
The plane 5.3 that the bottom of protection bolt offsets.As shown in figure 5, electric circular saw is equipped with safety pin 6, in the non-work of electric circular saw
When making, safety pin 6 is axially extended state, what the most bottom surface of the lateral wall of safety pin 6 and plane 5.3 offseted, at this point, the
One shield 3 and saw blade 2 can not be to lower swings；When electric circular saw needs to press down on work, make to insert safely by switch
6 axial shrinkage of pin, the two separation, the first shield 3 and saw blade 2 can be pressed down on freely at this time.
The side wall 5.2 of second shield 5 is in the arc to match with the inner wall of the first shield 3.
The second shield 5 positioned at the two sides of notch 5.1 forms foreboard 5.4 and back plate 5.5, the foreboard 5.4 and back plate 5.5
Respectively forwardly the side close to the annular saw center of circle extends and protrudes from the upper plane of bottom plate 4, and the foreboard 5.4 and back plate 5.5 are prolonged
It stretches section and is all provided with fluted 5.6, the bottom most position of the groove 5.6 is above the upper plane of bottom plate 4.Groove 5.6 at this can ribbon supply
The shaft insertion of dynamic saw blade 2, so that saw blade 2 be made to have bigger downward depth.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of hand electric annular saw, it include in casing (1) equipped with driving mechanism, extend casing (1) output shaft,
Saw blade (2), the first shield (3) and bottom plate (4) for accommodating saw blade (2) being arranged on output shaft, first shield
(3) fixed with casing (1)；It is characterized by: the electric circular saw further includes can be by bottom plate (4) when annular saw works or stops
The second shield (5) that the sawtooth position of the saw blade (2) of top surrounds, second shield (5) and bottom plate (4) are fixed；It is described
First shield (3) is enclosed in the second shield (5) outside to lower swing when hand electric annular saw works；Second shield (5)
It is integrated with bottom plate (4)；The inside of second shield (5) is equipped with the notch (5.1) passed through for hand electric circular saw blade,
The lower part of the notch (5.1) is the side wall (5.2) of the second shield (5), and the notch (5.1) and the saw kerf (4.1) on bottom plate (4) are right
Together；The top of the interior plate of second shield (5) is equipped with the limit to match for the security protection bolt of hand electric annular saw
Structure；The position limiting structure refers to that the top of the interior plate of second shield (5) is equipped with the safety for hand electric annular saw
The plane (5.3) that the bottom of protection bolt offsets.
2. hand electric annular saw according to claim 1, it is characterised in that: the side wall (5.2) of second shield (5)
In the arc with the matching of the inner wall of the first shield (3).
3. hand electric annular saw according to claim 1, it is characterised in that: be located at the second of the two sides of notch (5.1)
Shield (5) forms foreboard (5.4) and back plate (5.5), and the foreboard (5.4) and back plate (5.5) are respectively forwardly close to the annular saw center of circle
Side extend and protrude from the upper plane of bottom plate (4), the extended segment of the foreboard (5.4) and back plate (5.5) is all provided with fluted
(5.6), the bottom most position of the groove (5.6) is above the upper plane of bottom plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453554.6A CN105921812B (en) | 2016-06-20 | 2016-06-20 | Hand electric annular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453554.6A CN105921812B (en) | 2016-06-20 | 2016-06-20 | Hand electric annular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105921812A CN105921812A (en) | 2016-09-07 |
| CN105921812B true CN105921812B (en) | 2018-12-04 |
Family
ID=56831397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610453554.6A Active CN105921812B (en) | 2016-06-20 | 2016-06-20 | Hand electric annular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105921812B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3946790A4 (en) * | 2019-05-01 | 2023-01-11 | Milwaukee Electric Tool Corporation | Static discharge mitigation of power tools |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565572Y (en) * | 2002-08-12 | 2003-08-13 | 宁波经济技术开发区中强电动工具有限公司 | Self locking device of bias cutter protective hood |
| DE102007000415A1 (en) * | 2007-07-30 | 2009-02-05 | Hilti Aktiengesellschaft | Cover device of a tool device |
| CN204035678U (en) * | 2014-01-06 | 2014-12-24 | 武义冠鑫机械有限公司 | A kind of electric circular saw with graduation indication function |
| CN104942362B (en) * | 2014-03-24 | 2017-08-25 | 苏州宝时得电动工具有限公司 | Electric circular saw |
| CN105458398A (en) * | 2014-09-09 | 2016-04-06 | 苏州宝时得电动工具有限公司 | Portable circular saw |
-
2016
- 2016-06-20 CN CN201610453554.6A patent/CN105921812B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105921812A (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3581309B1 (en) | Machine tool with reciprocating output shaft | |
| CN105921812B (en) | Hand electric annular saw | |
| JP2010115794A (en) | Cutting machine | |
| US10471525B2 (en) | Reciprocating saw mechanism | |
| CN105904024B (en) | Electric circular saw | |
| CN107363334B (en) | Has the safe folding method of fool proof collapsible sawing machine and sawing machine | |
| CN217372249U (en) | Electric tool control structure with self-locking and anti-self-locking functions | |
| EP2747927B1 (en) | Power saw including an impact mechanism | |
| CN205888244U (en) | Electric circular saw | |
| CN109789501A (en) | Torque and rotation are transmitted by the isolator for bench saw | |
| CN205888241U (en) | Hand -held type electric circular saw | |
| EP3738716B1 (en) | Power tool | |
| JP2019209455A (en) | Power tool | |
| CN205437958U (en) | Turnning and milling all -in -one milling cutter feeding device and turnning and milling all -in -one | |
| CN107095599B (en) | Food processing assembly with safety lock | |
| CN212602336U (en) | Chain saw | |
| CN107081473B (en) | Power tool | |
| CN218557163U (en) | Cutting device | |
| CN107855593B (en) | Hand-held dust-collecting cutting machine | |
| CN102284744B (en) | Reciprocating saw | |
| CN113909566A (en) | Electric tool | |
| CN217122775U (en) | Angle grinder | |
| JP5187059B2 (en) | Electric tool | |
| CN220942991U (en) | Reinforcing steel bar cutting machine | |
| CN218715834U (en) | Shower room fast-assembling handle structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180214 Address after: 315000, Zhejiang, Ningbo province Yinzhou District Collection Town Village:Ningbo Tianming Tools Co., Ltd. Applicant after: Ningbo Tianming Tools Co., Ltd. Applicant after: Shaanxi scrsede Trade Co., Ltd. Address before: 315000, Zhejiang, Ningbo province Yinzhou District Collection Town Village:Ningbo Tianming Tools Co., Ltd. Applicant before: Ningbo Tianming Tools Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190926 Address after: 315171 Guangsheng Village, Jishigang Town, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Tianming Tools Co., Ltd. Address before: 315000, Zhejiang, Ningbo province Yinzhou District Collection Town Village:Ningbo Tianming Tools Co., Ltd. 315000 Zhejiang city of Ningbo province Yinzhou District Ji Shi Gang Zhen Guang Sheng Cun, Ningbo Tianming Tools Co. Ltd. Co-patentee before: Shaanxi scrsede Trade Co., Ltd. Patentee before: Ningbo Tianming Tools Co., Ltd. |
|
| TR01 | Transfer of patent right |