CN205888244U - Electric circular saw - Google Patents
Electric circular saw Download PDFInfo
- Publication number
- CN205888244U CN205888244U CN201620624409.5U CN201620624409U CN205888244U CN 205888244 U CN205888244 U CN 205888244U CN 201620624409 U CN201620624409 U CN 201620624409U CN 205888244 U CN205888244 U CN 205888244U
- Authority
- CN
- China
- Prior art keywords
- guard shield
- circular saw
- electric circular
- base plate
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an electric circular saw, be equipped with in it includes actuating mechanism casing (1), extend casing (1) the output shaft, set up at output epaxial saw bit (2), be used for accommodating first guard shield (3) and bottom plate (4) of saw bit (2), first guard shield (3) are fixed with casing (1), its characterized in that: electric circular saw still includes the saw bit protection machanism who fixes on bottom plate (4). Small in quantity, the simple structure of this electric circular saw spare part avoids lower isolating annuli to use spring isotructure, good reliability, makes assembly of whole annular saw and design all bring the convenience.
Description
Technical field
This utility model is related to electric tool technical field, is especially a kind of electric circular saw.
Background technology
Electric circular saw is a kind of instrument driving saw blade to carry out sawing action for power by drive mechanism with motor, tool
The features such as have safe and reliable, rational in infrastructure, high working efficiency.
Have a electric circular saw in the market, it include casing, the output shaft extending described casing, be arranged on described
Saw blade on output shaft and the protective cover for housing described saw blade；Protective cover is made up of dynamic guard shield and quiet guard shield, for protecting
Saw blade, prevents injury accident when operating.Quiet guard shield is connected with casing, and dynamic guard shield rotates along saw blade, and leans on torsion spring pressure
Automatically cover saw blade.Dynamic guard shield relies on the switch being located in casing to be locked or unlock, and dynamic guard shield is in the locked state, round
Saw cannot push use, and in the unlocked state, annular saw just can push normal use.The connected mode of dynamic guard shield have multiple, first
Kind: dynamic guard shield the base plate rotation of bottom and annular saw be connected, then resetted by torsion spring again；Second: the pendulum of dynamic guard shield
The disorder of internal organs heart is rotated with the output shaft position of casing and is connected, and is also to be resetted by torsion spring；The third: the oscillation center of dynamic guard shield with
The output shaft position of casing rotates and connects, dynamic guard shield bottom be provided with guide frame with the base plate of annular saw, dynamic guard shield leans on answers
Position is driven by determining guard shield.
The electric circular saw of the above structure has the disadvantage in that
1st, in processing, need dynamic guard shield individually to process, the dynamic knot having rotation to be connected between guard shield and base plate during installation
Structure, and also need to torsion spring cooperation or guiding mechanism cooperation, so all cause that amount of parts is many, structure is more complicated, assemble
Also complicated.
2nd, due to being pressed down using annular saw each time, it is required to dynamic guard shield and swings once, so that guard shield is swung for a long time,
Annular saw uses process to produce the impurity such as a lot of powder, and these situations most likely result in torsion spring and lost efficacy or rotational structure card
Dead or situations such as guide frame is stuck so that dynamic guard shield block or cannot normal reset, substantially reduce electric circular saw
Reliability.
3rd, in annular saw assembling and design, need accurately to calculate the resetting time of dynamic guard shield by the torsion of torsion spring, from
And can be only achieved safety requirements.In addition assembling needs accurately to calculate dynamic guard shield and the gap determining guard shield, thus just can make to determine guard shield
Will not collide with dynamic guard shield when pushing；It is connected because the oscillation center of dynamic guard shield is rotated with the output shaft position of casing, so again
Design and assembled be required for very high precision and durability degree, just can make the normal swing that guard shield is long-term, these all make to
Design and assembling bring difficulty.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of amount of parts is few, structure is simple, it is to avoid lower shield
Using the structures such as spring, good reliability, make the electric circular saw that overall annular saw assembling and design all bring convenience.
The technical solution of the utility model is to provide a kind of electric circular saw with following structure, it include in be provided with drive
The casing of motivation structure, the output shaft extending casing, the saw blade being arranged on output shaft, for house the first guard shield of saw blade with
And base plate, described first guard shield fixed with casing；Described electric circular saw also includes one and is fixed on the blade guard mechanism on base plate.
Described blade guard mechanism electric circular saw work or stop when all can to base plate above saw blade sawtooth position
Surround.
Described blade guard mechanism is the second guard shield, and described second guard shield is fixedly connected with base plate.
Described first guard shield swung downward when electric circular saw works is enclosed in outside the second guard shield.
Described second guard shield is integrated with base plate.
The inner side of described second guard shield is provided with the breach passing through for electronic circular saw blade, and the bottom of this breach is the second guard shield
Side wall, this breach alignd with the saw kerf on base plate.
The top of the interior plate of described second guard shield is provided with the position limiting structure that the security protection latch for electric circular saw matches.
Described position limiting structure refers to that the security protection that the top of the interior plate of described second guard shield is provided with for electric circular saw is inserted
The plane that the bottom of pin offsets.
The arc that the side wall of described second guard shield matches in the inwall with the first guard shield.
The second guard shield positioned at the both sides of breach forms front and rear panels, and described front and rear panels are respectively forwardly near annular saw
The side in the center of circle extends and protrudes from the upper plane of base plate, the extension of described front and rear panels be all provided with fluted, this groove
Bottom most position is above the upper plane of base plate.
After above structure, this utility model has the advantage that
1st, in processing, described electric circular saw also includes a blade guard mechanism being fixed on base plate, so can one
Secondary processing, and be no longer necessary to rotational structure, torsion spring or guide frame etc. are installed, such amount of parts is few, structure simple,
Assembling is also convenient for.
2nd, because described electric circular saw also includes a blade guard mechanism being fixed on base plate, so each time using circle
Saw presses down, and lower shield is also motionless, and upper shield, in swung downward, can cover on outside lower shield, can cover in lower shield
Outward；Again due to eliminating torsion spring, rotational structure or guide frame, be avoided that torsion spring lost efficacy or rotational structure stuck or
The generation of situations such as guide frame is stuck, anti-stop guard shield blocks or is split by annular saw bullet, and these all can increase electric circular saw
Reliability.
3rd, because described electric circular saw also includes a blade guard mechanism being fixed on base plate, torsion spring, rotation are eliminated
The design of structure or guide frame and assembling, and use when, only upper shield be swing, so annular saw assembling and
The resetting time of lower shield during design, need not be considered, as long as design upper shield avoids colliding with lower shield, so all can be to design
Bring convenience with assembling.
Brief description
Fig. 1 is the base plate of electric circular saw of the present utility model and the structural representation of lower shield.
Fig. 2 is the base plate of electric circular saw of the present utility model and another viewing angle constructions schematic diagram of lower shield.
Fig. 3 is the structural representation of the working condition of electric circular saw of the present utility model.
Fig. 4 is the structural representation of the non-working condition of electric circular saw of the present utility model.
Fig. 5 is another viewing angle constructions schematic diagram of the non-working condition of electric circular saw of the present utility model.
Fig. 6 is the schematic diagram of the electric circular saw working condition of embodiment two of the present utility model.
Fig. 7 is the schematic diagram of the non-working condition of electric circular saw of embodiment two of the present utility model.
Fig. 8 is the first guard shield of the electric circular saw of embodiment two of the present utility model and the top view of the second guard shield.
Fig. 9 is the schematic diagram of the electric circular saw working condition of embodiment three of the present utility model.
Figure 10 is the schematic diagram of the non-working condition of electric circular saw of embodiment three of the present utility model.
Figure 11 is the first guard shield of the electric circular saw of embodiment three of the present utility model and the top view of the second guard shield.
Figure 12 is the schematic diagram of the electric circular saw working condition of example IV of the present utility model.
Figure 13 is the schematic diagram of the non-working condition of electric circular saw of example IV of the present utility model.
Figure 14 is bowing of the first guard shield, the 3rd guard shield and the 4th guard shield of the electric circular saw of example IV of the present utility model
View.
Shown in figure:
1st, casing, 2, saw blade, the 3, first guard shield, 4, base plate, 4.1, saw kerf, the 5, second guard shield, 5.1, breach, 5.2, side
Wall, 5.3, plane, 5.4, header board, 5.5, back plate, 5.6, groove, 6, safety pin, the 7, the 3rd guard shield, the 8, the 4th guard shield.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, electric circular saw of the present utility model, it include in be provided with the machine of drive mechanism
Shell 1, the output shaft extending casing 1, the saw blade 2 being arranged on output shaft, the first guard shield 3 and bottom for housing saw blade 2
Plate 4, described first guard shield 3 is fixing with casing 1；Described electric circular saw also includes a blade guard mechanism being fixed on base plate 4.
Described blade guard mechanism embodiment one: described blade guard mechanism all can be right in electric circular saw work or stopping
The sawtooth position of the saw blade 2 of base plate 4 top surrounds.Described blade guard mechanism is the second guard shield 5, described second guard shield 5 and bottom
Plate 4 is fixedly connected.Described first guard shield 3 swung downward when electric circular saw works is enclosed in outside the second guard shield 5.Described second shield
Cover 5 is integrated with base plate 4.Certainly in acceptable second guard shield 5 acceptable with bolts, snapping or bonding etc. with base plate 4
One or more compound modes be fixedly connected.Described electric circular saw all can be by base plate when being additionally included in annular saw work or stopping
The second guard shield 5 that the sawtooth position of the saw blade 2 of 4 tops surrounds, described second guard shield 5 is fixing with base plate 4.Cross the circle of saw blade 2
The heart and the perpendicular bisector of base plate 4, the second guard shield 5 and casing 1 are located at the same side of this perpendicular bisector, between the first guard shield 3 and base plate 4
Rotary shaft is a axle.
Due to, when annular saw work or stopping, having one piece of space so that the sawtooth of saw blade is exposed between the first guard shield 3 and floor 4,
So there is potential safety hazard, thus increase the second guard shield 5 can by the side of the sawtooth of the saw blade of this gap and above and
All surround below, it is to avoid expose outside.
Described first guard shield 3 swung downward when electric circular saw works is enclosed in outside the second guard shield 5.I.e. electric circular saw work
When, casing 1 drives the first guard shield 3 and saw blade 2 to press down on, and now, the first guard shield 3 gradually covers the second guard shield 5, manages in turn
Solve, that is, the second guard shield 5 gradually extend in the first guard shield 3, the first guard shield 3 is overlapping with the second guard shield 5.
The inner side of described second guard shield 5 is provided with the breach 5.1 passing through for electronic circular saw blade, and the bottom of this breach 5.1 is
The side wall 5.2 of the second guard shield 5, this breach 5.1 is alignd with the saw kerf 4.1 on base plate 4.During electric circular saw work, saw blade 2 is down
When, the breach 5.1 of the second guard shield 5 can have space to supply saw blade 2 to rotate, and the side wall 5.2 of the second guard shield 5 can block the saw of saw blade 2
Teeth portion position, so plays safety protection function.The safety that the top of the interior plate of described second guard shield 5 is provided with for electric circular saw is prevented
The position limiting structure that shield latch matches.Described position limiting structure refers to that the top of the interior plate of described second guard shield 5 is provided with for electronic circle
The plane 5.3 that the bottom of the security protection latch of saw offsets.As shown in figure 5, electric circular saw is provided with safety pin 6, electronic
When annular saw does not work, safety pin 6 is axially extended state, and the bottom surface of the lateral wall of safety pin 6 and plane 5.3 offset
, now, the first guard shield 3 and saw blade 2 cannot swung downward；When electric circular saw needs to press down on work, by opening
Pass makes safety pin 6 axial shrinkage, and both separate, and now the first guard shield 3 and saw blade 2 can freely press down on.Described second
The arc that the side wall 5.2 of guard shield 5 matches in the inwall with the first guard shield 3.The second guard shield 5 positioned at the both sides of breach 5.1 is formed
Header board 5.4 and back plate 5.5, described header board 5.4 and back plate 5.5 respectively forwardly extend near the side in the annular saw center of circle and protrude from bottom
The upper plane of plate 4, the extension of described header board 5.4 and back plate 5.5 is all provided with fluted 5.6, and the bottom most position of this groove 5.6 is the bottom of in
Above the upper plane of plate 4.Groove 5.6 at this can for driving the rotating shaft of saw blade 2 to embed so that saw blade 2 have bigger downward
Depth.
As shown in Fig. 6, Fig. 7 and Fig. 8, described blade guard mechanism embodiment two: described blade guard mechanism is the second shield
Cover 5, described second guard shield 5 is fixedly connected with base plate 4.Cross the center of circle of saw blade 2 and the perpendicular bisector of base plate 4, the second guard shield 5 and casing
1 both sides being located at this perpendicular bisector, the rotary shaft between the first guard shield 3 and base plate 4 is b axle.First guard shield 3 and the second shield during use
Cover 5 is overlapping.It is provided with the space rotating for saw blade in second guard shield 5.
As shown in Fig. 9, Figure 10 and Figure 11, described blade guard mechanism embodiment three: described blade guard mechanism is second
Guard shield 5, the rotary shaft between the first guard shield 3 and base plate 4 is c-axis.The length of the second guard shield 5 is more than the diameter of saw blade 2, less than the
The diameter of one guard shield 3.When using, the first guard shield 3 pushes and surrounds the second guard shield 5.It is provided with second guard shield 5 and rotate for saw blade
Space.
As shown in Figure 12, Figure 13 and Figure 14, described blade guard mechanism example IV: described blade guard mechanism includes
Three guard shields 7 and the 4th guard shield 8, shown 4th guard shield 8 is fixing with base plate 4, and shown 3rd guard shield 7 can be stretched with the 4th guard shield 8, stops
When only, the 4th guard shield 8 stretches out outside the 3rd guard shield 8, and during work, the 4th guard shield 8 is reduced in the 3rd guard shield 8.Shown first guard shield 3
Rotary shaft with base plate 3 is d axle.1., when upper shield pushes, after reaching certain stroke, the 3rd guard shield is depressed by limit point e；2.
When quitting work, the 3rd guard shield 7 is stretched by the first guard shield 3 limit point f, plays safety protective action.3rd guard shield 7 and the 4th
It is provided with the space rotating for saw blade in guard shield 8.
Claims (10)
1. a kind of electric circular saw, it include in be provided with the casing (1) of drive mechanism, extend the output shaft of casing (1), be arranged on
Saw blade (2) on output shaft, it is used for housing first guard shield (3) of saw blade (2) and base plate (4), described first guard shield (3) and machine
Shell (1) is fixing；It is characterized in that: described electric circular saw also includes a blade guard mechanism being fixed on base plate (4).
2. electric circular saw according to claim 1 it is characterised in that: described blade guard mechanism electric circular saw work or
All the sawtooth position of the saw blade (2) above base plate (4) can be surrounded during stopping.
3. electric circular saw according to claim 2 it is characterised in that: described blade guard mechanism be the second guard shield (5), institute
State the second guard shield (5) to be fixedly connected with base plate (4).
4. electric circular saw according to claim 3 it is characterised in that: described first guard shield (3) is when electric circular saw works
Swung downward is enclosed in the second guard shield (5) outward.
5. electric circular saw according to claim 4 it is characterised in that: described second guard shield (5) and base plate (4) are integrated.
6. electric circular saw according to claim 3 it is characterised in that: the inner side of described second guard shield (5) is provided with for electronic
The breach (5.1) that circular saw blade passes through, the bottom of this breach (5.1) is the side wall (5.2) of the second guard shield (5), this breach (5.1)
Align with the saw kerf (4.1) on base plate (4).
7. electric circular saw according to claim 3 it is characterised in that: the top of the interior plate of described second guard shield (5) sets
There is the position limiting structure that the security protection latch for electric circular saw matches.
8. electric circular saw according to claim 7 it is characterised in that: described position limiting structure refers to described second guard shield (5)
The top of interior plate be provided with the plane (5.3) that the bottom of the security protection latch for electric circular saw offsets.
9. electric circular saw according to claim 6 it is characterised in that: the side wall (5.2) of described second guard shield (5) is in and the
The arc that the inwall of one guard shield (3) matches.
10. electric circular saw according to claim 6 it is characterised in that: positioned at the second guard shield of the both sides of breach (5.1)
(5) header board (5.4) and back plate (5.5) are formed, described header board (5.4) and back plate (5.5) are respectively forwardly near the one of the annular saw center of circle
Side extends and protrudes from the upper plane of base plate (4), and the extension of described header board (5.4) and back plate (5.5) is all provided with fluted
(5.6), the bottom most position of this groove (5.6) is above the upper plane of base plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620624409.5U CN205888244U (en) | 2016-06-20 | 2016-06-20 | Electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620624409.5U CN205888244U (en) | 2016-06-20 | 2016-06-20 | Electric circular saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205888244U true CN205888244U (en) | 2017-01-18 |
Family
ID=57768486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620624409.5U Withdrawn - After Issue CN205888244U (en) | 2016-06-20 | 2016-06-20 | Electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205888244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904024A (en) * | 2016-06-20 | 2016-08-31 | 宁波市天铭工具有限公司 | Electric circular saw |
-
2016
- 2016-06-20 CN CN201620624409.5U patent/CN205888244U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904024A (en) * | 2016-06-20 | 2016-08-31 | 宁波市天铭工具有限公司 | Electric circular saw |
| CN105904024B (en) * | 2016-06-20 | 2018-12-04 | 宁波市天铭工具有限公司 | Electric circular saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20181204 |