CN110216329B - Saw blade clamping device and electric tool using same - Google Patents
Saw blade clamping device and electric tool using same Download PDFInfo
- Publication number
- CN110216329B CN110216329B CN201810170180.6A CN201810170180A CN110216329B CN 110216329 B CN110216329 B CN 110216329B CN 201810170180 A CN201810170180 A CN 201810170180A CN 110216329 B CN110216329 B CN 110216329B
- Authority
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- China
- Prior art keywords
- saw blade
- limiting
- clamping device
- blade clamping
- main body
- 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.)
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- 230000000670 limiting effect Effects 0.000 claims abstract description 115
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
- B23D49/16—Hand-held or hand-operated sawing devices with straight saw blades actuated by electric or magnetic power or prime movers
-
- 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
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
- B23D51/10—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for hand-held or hand-operated devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention relates to a saw blade clamping device and an electric tool using the saw blade clamping device, comprising a reciprocating rod and a limiting piece, wherein the reciprocating rod comprises a hollow main body and a limiting block extending from one end of the main body, the limiting block is provided with a first limiting groove communicated with the main body along the axial direction of the main body, the limiting piece is accommodated in the main body, one end of the limiting piece, which is close to the limiting block, is provided with a second limiting groove communicated with the first limiting groove along the axial direction of the main body, and the second limiting groove is used for accommodating the end part of a saw blade so as to limit the end part of the saw blade to swing. Therefore, the limiting piece is added in the reciprocating rod, the second limiting groove for clamping the saw blade is formed in one end, close to the limiting piece, of the limiting piece, the second limiting groove and the first limiting groove are matched with each other to clamp the saw blade, the swing amount of the saw blade is reduced, and the cutting precision and operability of the electric tool are improved.
Description
Technical Field
The invention relates to the field of electric tools, in particular to a saw blade clamping device and an electric tool using the saw blade clamping device.
Background
In life, electric tools such as reciprocating saws and curve saws are often used, and the electric tools mainly drive a saw blade to reciprocate through a reciprocating rod so as to cut a workpiece. In the conventional art, the saw blade is generally clamped on the reciprocating lever, and in order to facilitate the disassembly of the saw blade, a return spring and a cushion block connected with one end of the spring are generally arranged in the reciprocating lever, so that the spring can provide elasticity for the saw blade to eject the saw blade when the saw blade is disassembled. In order to enable the saw blade to be positioned accurately, a groove is formed in one end, in contact with the saw blade, of the cushion block, but the groove does not have an actual limiting effect on the swing angle of the tail end of the saw blade, so that the swing amount of the end part of the saw blade is large, the swing amount is reflected on the performance of the whole machine, and then the cutting accuracy of the saw blade is poor, and the operability is insufficient.
Disclosure of Invention
Based on this, it is necessary to provide a saw blade clamping device and an electric tool using the saw blade clamping device, aiming at the problems of poor cutting precision and insufficient operability of the saw blade.
According to a first aspect of the embodiment of the invention, there is provided a saw blade clamping device, including a reciprocating rod and a limiting member, where the reciprocating rod includes a hollow main body and a limiting block extending from one end of the main body, the limiting block is provided with a first limiting groove communicated with the main body along an axial direction of the main body, the limiting member is accommodated in the main body, one end of the limiting member, which is close to the limiting block, is provided with a second limiting groove communicated with the first limiting groove along an axial direction of the main body, and the first limiting groove and the second limiting groove limit a saw blade together.
In one embodiment, the limiting member is fixedly connected in the reciprocating rod.
In one embodiment, the stop is slidably coupled within the reciprocating rod.
In one embodiment, positioning grooves are formed in two sides of the limiting piece and used for preventing the limiting piece from rotating relative to the reciprocating rod.
In one embodiment, the reciprocating rod is further provided with a compression spring, and the compression spring is sleeved on the limiting piece and is used for providing elastic force for ejecting the saw blade when the saw blade is detached.
In one embodiment, the limiting block is further provided with a containing cavity communicated with the first limiting groove, a steel ball is contained in the containing cavity, and the steel ball is matched with a stop piece of the saw blade to fix the saw blade relative to the reciprocating rod.
In one embodiment, the device further comprises a pulling button, a torsion spring is arranged in the pulling button, the torsion spring and the pulling button are sleeved on the limiting block, and the pulling button is clamped at the joint of the limiting block and the main body.
In one embodiment, the saw blade clamping device further comprises a guiding limiting mechanism for guiding and limiting when the saw blade clamping device reciprocates.
In one embodiment, the saw blade clamping device further comprises a protection mechanism, wherein the protection mechanism is sleeved on the main body and used for protecting the saw blade clamping device.
According to a second aspect of embodiments of the present invention there is provided a power tool comprising a speed reducing mechanism, a blade lifting mechanism, a motor and a blade clamping arrangement as described in any of the above embodiments.
The saw blade clamping device and the electric tool using the saw blade clamping device provided by the embodiment of the invention comprise a reciprocating rod and a limiting piece, wherein the reciprocating rod comprises a hollow main body and a limiting block extending from one end of the main body, the limiting block is provided with a first limiting groove communicated with the main body along the axial direction of the main body, the limiting piece is accommodated in the main body, one end of the limiting piece, which is close to the limiting block, is provided with a second limiting groove communicated with the first limiting groove along the axial direction of the main body, and the first limiting groove and the second limiting groove are matched to limit the swing of a saw blade, so that the cutting precision and the operability of the saw blade are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is an exploded view of a saw blade clamping device according to an exemplary embodiment of the present invention;
FIG. 2 is a first cross-sectional view of a saw blade clamping device according to an exemplary embodiment of the present invention;
FIG. 3 is a second cross-sectional view of a saw blade clamping device according to an exemplary embodiment of the present invention;
FIG. 4 is a schematic view of another saw blade clamping arrangement according to an exemplary embodiment of the present invention;
FIG. 5 is a schematic illustration of another stop member configuration in accordance with an exemplary embodiment of the present invention;
fig. 6 is a schematic view of a power tool according to an exemplary embodiment of the present invention.
Reference numerals illustrate:
1 shows a saw blade clamping device, 2 shows a reciprocating lever, 21 shows a main body, 22 shows a limiting block, 221 shows a first limiting groove, 222 shows a receiving cavity, 3 and 3 'show limiting pieces, 31 and 31' show a second limiting groove, 32 shows a first part, 32 'show a positioning groove, 33 shows a second part, 33' show a protrusion, 4 shows a steel ball, 5 shows a saw blade, 51 shows a saw tooth part, 52 shows a stopper, 53 shows an end part, 6 shows a toggle button, 7 shows a gasket assembly, 71 shows a first gasket, 72 shows a second gasket, 8 shows a torsion spring, 9 shows a protection mechanism, 91 shows a felt clip, 92 shows a felt, 10 shows a guiding limiting mechanism, 101 shows a guiding plate, 102 shows a guiding block, 11 shows a chute mechanism, 12 shows a compression spring, a speed reducing mechanism 200, a knife lifting mechanism 300, and a motor 400.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
Fig. 1 is an exploded view of a saw blade clamping device according to an exemplary embodiment of the present invention, referring to fig. 1, the saw blade clamping device 1 includes a reciprocating rod 2 and a limiting member 3, the reciprocating rod 2 includes a hollow main body 21 and a limiting block 22 extending from one end of the main body 21, the limiting block 22 is provided with a first limiting groove 221 communicating with the main body 21 along an axial direction of the main body 21, the limiting member 3 is accommodated in the main body 21, one end of the limiting member 3 adjacent to the limiting block 22 is provided with a second limiting groove 31 communicating with the first limiting groove 221 along the axial direction of the main body 21, and the second limiting groove 31 is used for accommodating an end 53 of the saw blade 5 and limiting the end 53 of the saw blade 5 to swing. Of course, the first limiting groove 221 and the second limiting groove 31 may be directly connected, or may be connected through the receiving cavity 222 provided therebetween, which is not limited in the present invention. Specifically, one end of the saw blade 5 passes through the first limit groove 221 and is accommodated in the second limit groove 31, the first limit groove 221 is used for limiting the swing of the main body part of the saw blade 5, the second limit groove 31 is used for limiting the swing of the end 53 of the saw blade 5, the first limit groove 221 and the second limit groove 31 are matched to well limit the saw blade 5, so that the saw blade cannot swing, the cutting precision of the saw blade is improved, and the operability is strong.
In this embodiment, as shown in fig. 1-3, the limiting member 3 is fixedly connected in the reciprocating rod 2. Specifically, the limiting member 3 includes a first portion 32 and a second portion 33, where the first portion 32 and the second portion 33 may be integrally formed, or may be connected by a threaded fit, which is not limited in this aspect of the invention. Wherein, the second portion 33 is provided with a second limiting groove 31, and the width of the second limiting groove 31 is slightly larger than the thickness of the saw blade 5, so as to be beneficial to clamping the saw blade. In addition, the main body 21 of the reciprocating rod 2 is hollow, the limiting member 3 may be fixed in the main body 21 of the reciprocating rod 2 by welding, or the limiting member 3 and the reciprocating rod 2 may be fixed by interference fit, which is not limited in the present invention, and any manner of fixing the limiting member 3 and the reciprocating rod 2 is within the scope of the present invention.
In other embodiments, as shown in fig. 4-5, the stop 3 may be further modified to form a stop 3', the stop 3' being slidably coupled within the reciprocating rod 2. Specifically, the limiting piece 3 'is integrally formed, one end of the limiting piece 3' facing the main body 21 of the reciprocating rod 2 is provided with a protrusion 33', a groove for positioning is formed in the protrusion 33', one end of the limiting piece 3 'facing the limiting piece 22 of the reciprocating rod 2 is provided with a second limiting groove 31' for clamping the saw blade 5 in cooperation with the first limiting groove 221, and positioning grooves 32 'are formed on two sides of the limiting piece 3', so that the limiting piece 3 'is prevented from rotating axially relative to the reciprocating rod 2 when the limiting piece 3' slides along the length direction of the reciprocating rod 2. Of course, the sliding manner of the limiting member 3' relative to the reciprocating rod 2 is not limited in the present invention, and any sliding manner can be realized within the scope of the present invention. In other embodiments, the reciprocating rod 2 is further provided with a compression spring 12, the compression spring 12 is sleeved on the limiting piece 3', specifically, the compression spring 12 is sleeved and clamped on a protrusion 33' of the limiting piece 3', and is used for providing elastic force for ejecting the saw blade 5 when the saw blade is detached.
In this embodiment, as shown in fig. 1-3, the limiting block 22 of the reciprocating bar 2 is provided with a receiving cavity 222 connected with the first limiting groove 221, a receiving hole for receiving the steel ball 4 is formed at a position where the receiving cavity 222 is connected with the first limiting groove 221, the size of the receiving hole is equal to the diameter of the steel ball 4, and the two steel balls 4 cooperate with the stop piece of the saw blade 5 to fix the saw blade 5 relative to the reciprocating bar 2. It should be noted that the saw blade 5 used in the embodiment of the present invention is a standard saw blade in the industry, and the saw blade 5 includes a saw tooth portion 51, an end portion 53, and a stopper 52 extending along two opposite sides of the plane of the saw blade 5. In this embodiment, the stop 52 is a lug, and when the saw blade 5 needs to be fixed, the stop 52 may be clamped between the two steel balls 4, so that the saw blade 5 is fixed relative to the reciprocating lever 2.
In this embodiment, the saw blade clamping device 1 further includes a hollow pulling button 6, a torsion spring 8 is disposed in the pulling button 6, and the torsion spring 8 and the pulling button 6 are both sleeved on the limiting block 22 and are clamped at the joint of the limiting block 22 and the main body 21. Specifically, the torsion spring 8 is configured to provide a pressing force for the steel balls 4 when the stop piece 52 of the saw blade 5 is fixed in cooperation with the steel balls 4, one end of the torsion spring is fixedly connected with the pulling button 6, and the other end of the torsion spring is fixedly connected to the limiting block 22 of the reciprocating lever 2, when the saw blade 5 needs to be detached from the saw blade clamping device 1, the pulling button 6 is pulled, so that the torsion spring 8 releases the pressing force on the steel balls 4, and the two steel balls 4 respectively enter the two accommodating holes formed at the position where the accommodating cavity 222 is communicated with the first limiting groove 221, so that the saw blade 5 can be pulled out from the saw blade clamping device 1; when the saw blade 5 is required to be mounted on the saw blade clamping device 1, the saw blade 5 is firstly inserted into the first limiting groove 221 and the second limiting groove 31, and when the insertion position is proper, the poking button 6 is poked, and at the moment, the two steel balls 4 are matched with the stop piece 52 of the saw blade 5 to fix the saw blade 5 on the saw blade clamping device 1.
In other embodiments, the saw blade clamping device 1 is further provided with a gasket assembly 7, the gasket assembly 7 comprises a first gasket 71 and a second gasket 72, wherein the first gasket 71 and the second gasket 72 are respectively arranged on the end surfaces of the two ends of the poking button 6, which are contacted with the limiting block 22, and are used for preventing the limiting block 22 from being damaged due to extrusion stress between the limiting block 22 and the poking button 6.
In other embodiments, the saw blade clamping device 1 further comprises a protection mechanism 9, and the protection mechanism 9 is sleeved on the main body 21 and is used for protecting the saw blade clamping device 1. Specifically, the protection mechanism 9 includes a felt clip 91 and a felt 92, where a hole corresponding to the diameter of the main body 21 is formed between the felt clip 91 and the felt 92, and the protection mechanism may be sleeved on the main body 21, so that the protection mechanism may not only be used for preventing grease from leaking out of the saw blade clamping device 1, but also be used for preventing tiny impurities such as dust from entering the saw blade clamping device 1, and of course, the specific embodiment of the protection mechanism 9 is not limited, and any protection mechanism capable of protecting the saw blade clamping device 1 is within the protection scope of the present invention.
In other embodiments, the blade clamping device 1 further comprises a guiding and limiting mechanism 10 for guiding and limiting the blade clamping device 1 during reciprocating movement. Specifically, the guiding and limiting mechanism 10 includes a guiding plate 101 and a guiding block 102, where the guiding plate 101 is connected to the main body 21 end of the reciprocating rod 2 and is used for guiding and limiting when the saw blade clamping device 1 reciprocates; the guide block 102 is hollow and sleeved on the main body 21 of the reciprocating rod 2, and is also used for playing a role of guiding and limiting when the saw blade clamping device 1 reciprocates. Further, a slide groove mechanism 11 is provided in the guide plate 101, and is connected to a driving device (not shown) for transmitting a driving force to the guide plate 101.
Corresponding to the embodiment of the blade clamping device described above, as shown in fig. 6, the embodiment of the invention also provides a power tool comprising a motor 400, a reduction mechanism 200, a blade lifting mechanism 300 and the blade clamping device 1 as described in any of the above embodiments. Of course, the saw blade clamping device provided by the embodiment of the present invention is not limited to the embodiment of the power tool shown in fig. 6, any power tool requiring the saw blade clamping device can be applied to the saw blade clamping device provided by the embodiment of the present invention, and any power tool applying the saw blade clamping device provided by the embodiment of the present invention is within the scope of protection of the present invention.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a saw blade clamping device, its characterized in that includes reciprocating lever (2) and locating part (3), reciprocating lever (2) include hollow main part (21) and from stopper (22) that extend of the one end of main part (21), stopper (22) along the axial of main part (21) be equipped with first spacing groove (221) of main part (21) intercommunication, locating part (3) accept in main part (21), locating part (3) are close to one end of stopper (22) along the axial of main part (21) be equipped with second spacing groove (31) of first spacing groove (221) intercommunication, second spacing groove (31) be used for in with both sides butt of saw blade (5) in the thickness direction of saw blade (5), so that first spacing groove (221) and second spacing groove (31) limit saw blade (5) jointly.
2. Saw blade clamping device according to claim 1, characterized in that the limit piece (3) is fixedly connected in the reciprocating bar (2).
3. Saw blade clamping device according to claim 1, characterized in that the limit piece (3) is slidingly connected in the reciprocating bar (2).
4. A saw blade clamping arrangement according to claim 3, characterized in that positioning grooves (32') are provided on both sides of the limiting member (3) for preventing the limiting member (3) from rotating relative to the reciprocating lever (2).
5. A saw blade clamping device according to claim 3, characterized in that the reciprocating lever (2) is further provided with a compression spring (12), the compression spring (12) being sleeved on the limiting member (3) for providing an elastic force for ejecting the saw blade (5) when the saw blade (5) is detached.
6. Saw blade clamping device according to claim 1, characterized in that the limiting block (22) is further provided with a containing cavity (222) communicated with the first limiting groove (221), a steel ball (4) is contained in the containing cavity (222), and the steel ball (4) cooperates with a stop piece (52) of the saw blade (5) to fix the saw blade (5) relative to the reciprocating rod (2).
7. Saw blade clamping device according to claim 1, further comprising a pulling button (6), wherein a torsion spring (8) is arranged in the pulling button (6), the torsion spring (8) and the pulling button (6) are both sleeved on the limiting block (22), and are clamped at the joint of the limiting block (22) and the main body (21).
8. Saw blade clamping device according to claim 1, further comprising a guiding and limiting mechanism (10) for guiding and limiting the saw blade clamping device during reciprocating movement.
9. Saw blade clamping device according to claim 1, further comprising a guard mechanism (9), said guard mechanism (9) being arranged around said main body (21) for protecting said saw blade clamping device.
10. A power tool comprising a reduction mechanism (200), a blade lifting mechanism (300), a motor (400), and a blade clamping arrangement according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170180.6A CN110216329B (en) | 2018-03-01 | 2018-03-01 | Saw blade clamping device and electric tool using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170180.6A CN110216329B (en) | 2018-03-01 | 2018-03-01 | Saw blade clamping device and electric tool using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110216329A CN110216329A (en) | 2019-09-10 |
| CN110216329B true CN110216329B (en) | 2024-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810170180.6A Active CN110216329B (en) | 2018-03-01 | 2018-03-01 | Saw blade clamping device and electric tool using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110216329B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2598642B1 (en) * | 1986-05-16 | 1992-03-13 | Dieu Andre | BLADE END HOLDING PART FOR AN ECCENTRICALLY DRIVEN OSCILLATING SAW |
| DE19509542A1 (en) * | 1995-03-16 | 1996-09-19 | Bosch Gmbh Robert | Hand-held jigsaw |
| JP4460095B2 (en) * | 1999-12-21 | 2010-05-12 | 株式会社アマダエンジニアリングセンター | Band saw machine |
| TWM253427U (en) * | 2003-08-22 | 2004-12-21 | Motomax Electric Co Ltd | Clamping mechanism for saw blade of reciprocal type electric saw |
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| CN101612681B (en) * | 2008-06-27 | 2011-03-02 | 苏州宝时得电动工具有限公司 | Saw blade clamping device |
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| CN208178572U (en) * | 2018-03-01 | 2018-12-04 | 苏州宝时得电动工具有限公司 | The electric tool of saw blade clamping apparatus and the application saw blade clamping apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110216329A (en) | 2019-09-10 |
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