CN101531012B - Saw bit quick-change mechanism for curved saw - Google Patents
Saw bit quick-change mechanism for curved saw Download PDFInfo
- Publication number
- CN101531012B CN101531012B CN2009100305526A CN200910030552A CN101531012B CN 101531012 B CN101531012 B CN 101531012B CN 2009100305526 A CN2009100305526 A CN 2009100305526A CN 200910030552 A CN200910030552 A CN 200910030552A CN 101531012 B CN101531012 B CN 101531012B
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- Prior art keywords
- saw blade
- saw
- pressing shaft
- pin
- hole
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Abstract
The invention relates to an electric tool, in particular to a saw bit quick-change mechanism for a curved saw. According to the technical proposal provided by the invention, the quick-change mechanism comprises a toggle support with two supporting arms, and is characterized in that a pin roll is arranged between opening ends of the two supporting arms, and is hinged with a saw bit seat; the saw bit seat is provided with a slotted hole in which a bit pressing shaft capable of moving in the slotted hole is arranged; two ends of the bit pressing shaft are extended out of the slotted hole to form two extending ends; a pin is arranged in the inner sides of the two supporting arms respectively, each pin is respectively fixed with a connecting piece, and the end part of each connecting piece is respectively connected with the extending ends corresponding to the bit pressing shaft; a mounting groove capable of accommodating the saw bit is arranged in the saw bit seat; and a torsional spring which forces the bit pressing shaft to rotate clockwise around the pin and then press toward the bottom surface of the mounting groove is arranged between the pin roll and the bit pressing shaft. Saw bits can be conveniently and quickly changed by the saw bit quick-change mechanism.
Description
Technical field
The present invention relates to a kind of electric tool, specifically a kind of saw blade quick-changing mechanism of sweep-saw.
Background technology
Electric saw is a kind of electric tool that is used for the sawmilling material, because in use, the saw blade of electric saw very easily weares and teares, and therefore needs often to change.In the prior art, the replacing of saw blade mainly relies on craft, and is cumbersome, and changing once often needs the more time.
Summary of the invention
The objective of the invention is to design a kind of saw blade quick-changing mechanism of sweep-saw, conveniently and apace to change saw blade.
According to technical scheme provided by the invention, said quick-changing mechanism comprises the Shifting rack that has two support arms, it is characterized in that: between the openend of two support arms, bearing pin is set, hinged saw blade seat on said bearing pin; On said saw blade seat, slotted hole is set, the bit pressing shaft that can in slotted hole, move is set in said slotted hole; Slotted hole is all stretched out at the two ends of said bit pressing shaft, forms two overhanging ends; In the inboard of two support arms a pin is set respectively, a fixing respectively bump contacted chip on the every pin, the end of every bump contacted chip connects with the overhanging end of corresponding bit pressing shaft respectively; The mounting groove that can hold saw blade is set in saw blade seat; Between bearing pin and bit pressing shaft, being provided with forces bit pressing shaft after pin clockwise rotates, to press to the torsion spring of the bottom surface of mounting groove.
Said torsion spring set is on bearing pin, and an end of torsion spring is resisted against on the said saw blade seat, and the other end leans against on the said bit pressing shaft.Opposite side with respect to slotted hole on said saw blade seat is provided with a facade, on said facade, convexity is set, and horizontal through hole is set on convexity, and said bearing pin passes said through hole.The axis of said slotted hole tilts with respect to the bottom surface of said mounting groove, in mounting groove, behind the insertion saw blade, unclamps Shifting rack, and bit pressing shaft moves along the slotted hole that tilts under the effect of torsion spring, finally is pressed on the saw blade that is positioned at mounting groove.The two ends of said brace are provided with a through hole respectively, and one of them through hole is enclosed within on the said bit pressing shaft, and another through hole is enclosed within on the said pin.
Said torsion spring comprises two sections helicoidal structures, ∩ shape structure and pole; Be to be resisted against the ∩ shape structure on the saw blade seat between the abutting end of two sections helicoidal structures; The outside of two sections helicoidal structures is the pole that is resisted against below the bit pressing shaft.Said Shifting rack and two support arms thereof constitute ∩ shape, and a pin-and-hole that is used to that the axis hole of bearing pin is installed and is used to install pin all is set on every support arm.Said saw blade seat is positioned at the space that Shifting rack and support arm and bearing pin thereof surround.On said bit pressing shaft, be provided for indent that saw blade is positioned.
Advantage of the present invention is: after utilizing this device, when needs are changed saw blade, as long as the pulling Shifting rack; Make the bit pressing shaft that always is pressed on the saw blade at ordinary times leave saw blade, just can the saw blade that had lost efficacy be taken away in mounting groove, insert new saw blade again; Decontrol Shifting rack then, under the effect of torsion spring, bit pressing shaft moves along slotted hole automatically; Till pushing down saw blade, very convenient when therefore changing.
Description of drawings
Fig. 1 is a structure chart of the present invention.
Fig. 2 is an explosive view of the present invention.
The specific embodiment
As shown in the figure: said quick-changing mechanism comprises the Shifting rack 1 that has two support arms 10, and bearing pin 7 is set between the openend of two support arms 1, hinged saw blade seat 5 on said bearing pin 7; On said saw blade seat 5, slotted hole 14 is set, the bit pressing shaft 2 that can in slotted hole 14, move is set in said slotted hole 14; Slotted hole 14 is all stretched out at the two ends of said bit pressing shaft 2, forms two overhanging ends; A pin 4 is set respectively in the inboard of two support arms 10, a fixing respectively bump contacted chip 3 on the every pin 4, the end of every bump contacted chip 3 respectively with the overhanging end close-fitting of corresponding bit pressing shaft 2; Setting can be held the mounting groove 15 of saw blade in saw blade seat 5; Force bit pressing shaft 2 after pin 4 clockwise rotates, to press to the torsion spring 6 of the bottom surface of mounting groove 15 in setting between bearing pin 7 and the bit pressing shaft 2.Said torsion spring 6 is enclosed within on the bearing pin 7, and an end of torsion spring 6 is resisted against on the said saw blade seat 5, and the other end leans against on the said bit pressing shaft 2.When needs are changed saw blade, break away from saw blade with pull moving Shifting rack 1, make the bit pressing shaft 2 that is pressed at ordinary times on the saw blade always earlier; The saw blade that to change is then taken away in mounting groove 15, changes new saw blade again, and then decontrols Shifting rack 1; Under the effect of torsion spring 6, force bit pressing shaft 2 to be rotated around pin 4, move along slotted hole 14 simultaneously; Again be pressed on the new saw blade, saw blade is fixed in the mounting groove 15.
Opposite side with respect to slotted hole 14 on said saw blade seat 5 is provided with a facade 5, and convexity 16 is set on said facade 5, on protruding 16, horizontal through hole 17 is set, and said bearing pin 7 passes said through hole 17.
The axis of said slotted hole 14 tilts with respect to the bottom surface of said mounting groove 15, in mounting groove 15, behind the insertion saw blade, unclamps Shifting rack 1, and bit pressing shaft 2 moves along the slotted hole 14 that tilts under the effect of torsion spring 6, finally is pressed on the saw blade that is positioned at mounting groove 15.
The two ends of said brace 3 are provided with a through hole respectively, and one of them through hole is enclosed within on the said bit pressing shaft 2, and another through hole is enclosed within on the said pin 4.
Said torsion spring 6 comprises two sections helicoidal structures 20, ∩ shape structure 19 and pole 18; Be the ∩ shape structure 19 on the facade that is resisted against saw blade seat 5 between the abutting end of two sections helicoidal structures 20; The outside of two sections helicoidal structures 19 is the pole 18 that is resisted against below the bit pressing shaft 2.
Said Shifting rack 1 and two support arms 10 thereof constitute ∩ shape, and a pin-and-hole 11 that is used to that the axis hole 12 of bearing pin 7 is installed and is used to install pin 4 all is set on every support arm 10.
Said saw blade seat 5 is positioned at the space that Shifting rack 1 and support arm 10 and bearing pin 7 thereof surround.
On said bit pressing shaft 2, be provided for indent 13 that saw blade is positioned, when bit pressing shaft 2 was pressed on the saw blade, saw blade was limited in the said indent 13.
Claims (8)
1. the saw blade quick-changing mechanism of sweep-saw comprises the Shifting rack (1) that has two support arms (10), it is characterized in that: bearing pin (7) is set between the openend of two support arms (1), goes up hinged saw blade seat (5) at said bearing pin (7); Slotted hole (14) is set on said saw blade seat (5), the bit pressing shaft (2) that can in slotted hole (14), move is set in said slotted hole (14); Slotted hole (14) is all stretched out at the two ends of said bit pressing shaft (2), forms two overhanging ends; In the inboard of two support arms (10) pin (4) is set respectively, a fixing respectively bump contacted chip (3) on the every pin (4), the end of every bump contacted chip (3) connects with the overhanging end of corresponding bit pressing shaft (2) respectively; Setting can be held the mounting groove (15) of saw blade in saw blade seat (5); Force bit pressing shaft (2) after pin (4) clockwise rotates, to press to the torsion spring (6) of the bottom surface of mounting groove (15) in setting between bearing pin (7) and the bit pressing shaft (2);
Said torsion spring (6) is enclosed within on the bearing pin (7), and an end of torsion spring (6) is resisted against on the said saw blade seat (5), and the other end leans against on the said bit pressing shaft (2).
2. the saw blade quick-changing mechanism of sweep-saw according to claim 1, it is characterized in that: the two ends of said brace (3) are provided with a through hole respectively, and one of them through hole is enclosed within on the said bit pressing shaft (2), and another through hole is enclosed within on the said pin (4).
3. the saw blade quick-changing mechanism of sweep-saw according to claim 1, it is characterized in that: said torsion spring (6) comprises two sections helicoidal structures (20), ∩ shape structure (19) and pole (18); Be to be resisted against the ∩ shape structure (19) on the saw blade seat (5) between the abutting end of two sections helicoidal structures (20); The outside of two sections helicoidal structures (19) is for being resisted against the pole (18) below the bit pressing shaft (2).
4. the saw blade quick-changing mechanism of sweep-saw according to claim 1; It is characterized in that: the opposite side of going up with respect to slotted hole (14) at said saw blade seat (5) is provided with a facade (5); Convexity (16) is set on said facade (5); On protruding (16), horizontal through hole (17) is set, said bearing pin (7) passes said through hole (17).
5. the saw blade quick-changing mechanism of sweep-saw according to claim 1; It is characterized in that: the axis of said slotted hole (14) tilts with respect to the bottom surface of said mounting groove (15); After in mounting groove (15), inserting saw blade; Unclamp Shifting rack (1), bit pressing shaft (2) moves along the slotted hole (14) that tilts under the effect of torsion spring (6), finally is pressed on the saw blade that is positioned at mounting groove (15).
6. the saw blade quick-changing mechanism of sweep-saw according to claim 1; It is characterized in that: said Shifting rack (1) and two support arms (10) thereof constitute ∩ shape, and a pin-and-hole (11) that is used to install the axis hole (12) of bearing pin (7) and is used for installing pin (4) all is set on every support arm (10).
7. the saw blade quick-changing mechanism of sweep-saw according to claim 1 is characterized in that: said saw blade seat (5) is positioned at the space that Shifting rack (1) and support arm (10) thereof and bearing pin (7) surround.
8. the saw blade quick-changing mechanism of sweep-saw according to claim 1 is characterized in that: on said bit pressing shaft (2), be provided for indent (13) that saw blade is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100305526A CN101531012B (en) | 2009-04-15 | 2009-04-15 | Saw bit quick-change mechanism for curved saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100305526A CN101531012B (en) | 2009-04-15 | 2009-04-15 | Saw bit quick-change mechanism for curved saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101531012A CN101531012A (en) | 2009-09-16 |
| CN101531012B true CN101531012B (en) | 2012-04-18 |
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ID=41101972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100305526A Expired - Fee Related CN101531012B (en) | 2009-04-15 | 2009-04-15 | Saw bit quick-change mechanism for curved saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101531012B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317966A (en) * | 2018-11-27 | 2019-02-12 | 三威塑胶制品(珠海)有限公司 | Spring clip kludge and its spring clip installation method, spring clip |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201446588U (en) * | 2009-04-15 | 2010-05-05 | 无锡市新菊电动工具有限公司 | Fast saw blade changing mechanism of curved saw |
-
2009
- 2009-04-15 CN CN2009100305526A patent/CN101531012B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201446588U (en) * | 2009-04-15 | 2010-05-05 | 无锡市新菊电动工具有限公司 | Fast saw blade changing mechanism of curved saw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101531012A (en) | 2009-09-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20120418 Termination date: 20150415 |
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| EXPY | Termination of patent right or utility model |