CN103317189A - Paired saw blade structure of reciprocating saw - Google Patents

Paired saw blade structure of reciprocating saw Download PDF

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Publication number
CN103317189A
CN103317189A CN201310260299XA CN201310260299A CN103317189A CN 103317189 A CN103317189 A CN 103317189A CN 201310260299X A CN201310260299X A CN 201310260299XA CN 201310260299 A CN201310260299 A CN 201310260299A CN 103317189 A CN103317189 A CN 103317189A
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China
Prior art keywords
saw blade
main body
cutting main
installation position
saw
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CN201310260299XA
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Chinese (zh)
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CN103317189B (en
Inventor
黄跃
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Ningbo Heisong Tools Co., Ltd.
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NINGBO HEISONG TOOLS CO Ltd
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Publication of CN103317189B publication Critical patent/CN103317189B/en
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Abstract

The invention discloses a paired saw blade structure of a reciprocating saw. The paired saw blade structure comprises a first saw blade and a second saw blade which are arranged in parallel. The first saw blade comprises a first cutting body and a first mounting portion; the second saw blade comprises a second cutting body and a second mounting portion. A guide hole extending along a cutting direction is formed in the first cutting body, a rivet which penetrates the guide hole further penetrates the second cutting body so as to tighten the first saw blade and the second saw blade, the first cutting body and the first mounting portion are both planes and in dislocated welding, and the second cutting body and the second mounting portion are both planes and are also in dislocated welding. Besides, a boss capable of extending into the guide hole is punched and formed on the second cutting body, and the width of the boss is matched with that of the guide hole. The mounting portions and the cutting bodies of the saw blades are linear components, so that parallelism between the two saw blades is guaranteed easily. Since the boss is hard and has a large contact area with the guide hole, high-speed motions of the saw blades can be kept for a long time.

Description

A kind of paired saw blade structure of reciprocating saw
Technical field
The present invention relates to a kind of reciprocating saw, especially a kind of paired saw blade structure of reciprocating saw.
Background technology
Electric reciprocating saw is a kind of instrument relatively more commonly used, be widely used in industries such as automobile, propagation, wooden model, decoration, leather, upper and lower reciprocating motion by saw blade, carry out straight line or curvilinear cut at workpiece such as timber, metal, plastics, rubber, regulate the left and right angle of base plate and then can carry out the inclined-plane cutting.
Normally used reciprocating saw only uses single saw blade to cut, and has begun to have the reciprocating saw of two saw blades settings at present, utilizes doing relatively reciprocating motion of two saw blades that workpiece is cut.The reciprocating saw of two saw blades is to utilize the relative motion of two saw blades to improve the cutting power of this machine and efficient, improve machine comfort level and handling in use simultaneously in cutting.Yet the structure of two saw blades at machine at a high speed, in the relative motion process, phenomenons such as saw blade shake, bifurcated occur probably, thereby the specific structure of saw blade needs is in it to be close to or closely spaced state all the time when cutting movement.
It is 200820033641.7 the disclosed a kind of electric hedgerow tea bush trimmer machine of Chinese patent as application number, comprise cutter and bottom knife, have slotted eye on it, through hole about bolt passes on blade slotted eye and the knife rest, and it is spacing with nut, and knife rest is fixed as one by press strip and holster shell, thereby namely need guide rail be set at blade fixes two blades and leads, yet because the relation of cutting object, if similar guide rail also is set on the saw blade of electric reciprocating saw, then can influences actual use.
And for example application number is 201110061949.9 the disclosed a kind of multifunctional cutter of Chinese patent, comprise the cutter that is installed on the reciprocating bar, cutter comprises first saw blade and second saw blade, rivet passes circular hole, lining and the pad on second saw blade in proper order, the other end by rivet rivets, make win saw blade and the applying of second saw blade, lining slides in the waist-shaped hole of first saw blade, realizes moving back and forth between two saw blades.Yet the rivet arrangement in the above-mentioned patent is higher than the thickness of two saw blades, and intensity is better, but only is fit to operation such as pollard, not too is fit to the cutting of massive material.And electric reciprocating saw will be used for cutting metal the time, then because rivet can not exceed the thickness of saw blade, total can be relatively fragile, and because need riveted joint, the material of rivet is generally all softer, can not bear too big power, in the high-speed motion process because factors such as contact-making surface little (with waist-shaped hole points of proximity contact condition), material softer very quick-wearing, burn.In addition, in order to guarantee the saw blade clamping to bar, guarantee two distances between the saw blade simultaneously, can see that the method that adopts in this patent application is with the saw blade bending, make the installation position of two saw blades be separated from each other, guarantee the space of two mounting structures like this.But, according to the basic principle of stamping parts as can be known, phenomenons such as saw blade can have a rebound when bending, geomery was inconsistent after the inconsistent meeting of bounce-back caused the saw blade bending, cause between installation position and the saw blade main body not parallel at last, make two saw blades can not keep good relative position, possible gap is very big also may interfere even cause phenomenons such as serious friction each other.
Summary of the invention
Technical problem to be solved by this invention is the problem that exists at above-mentioned prior art, and a kind of paired saw blade structure of reciprocating saw is provided, and satisfies the installation accuracy of saw blade, guarantees that two saw blades are in all the time to be close to or closely spaced state.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of paired saw blade structure of reciprocating saw, comprise first saw blade and second saw blade that be arranged in parallel, described first saw blade comprises first cutting main body and first installation position, described second saw blade comprises second cutting main body and second installation position, offer the pilot hole that extends along cut direction on the described first cutting main body, thereby the rivet that passes pilot hole penetrates the second cutting main body with described first saw blade and the tension of second saw blade, it is characterized in that: the described first cutting main body and first installation position are plane and dislocation welding, and the described second cutting main body and second installation position are plane and dislocation welding; Punch forming has the boss that can extend in the pilot hole on the described second cutting main body, the width of described boss and the width of pilot hole coupling.
There is the first tooth drift angle between first sawtooth on the described first cutting main body and the first cutting main body, have the second tooth drift angle between second sawtooth on the described second cutting main body and the second cutting main body, the described first tooth drift angle is acute angle with the second tooth drift angle and direction is consistent.When cutting, each saw blade is subjected to the component of two saw blade composition surface directions thus, all the time with the directive effect of two saw blades towards gathering, prevents that bifurcated from producing.
The outside side of described pilot hole has the inclined-plane, is used for cooperating with rivet, and rivet is strained two saw blades thus.
Described first saw blade is connected with corresponding reciprocating lever by clamping device respectively with second saw blade.
Described clamping device comprises side and the end fixed grip block of reciprocating lever of an end, be fixed on the latch plate of described clamp side, clamp fixedly has and also offers the mounting groove that inserts for the installation position of each saw blade on this side of described latch plate, and described clamp and latch plate clamp mutually and thus the installation position compressed.
Also comprise and prevent that each saw blade from leaving the locking mechanism of described clamp at vibration-direction, described locking mechanism comprises locking pin, has outwards outstanding clamping ramps on the another side of described clamp, described locking pin passes the installation position successively, extend in the locking button that is arranged on the clamp outside also fixing behind the clamp, described locking button can rotate along clamping ramps and make locking pin insert or leave the installation position, be arranged with on the described locking pin and make locking pin keep the back-moving spring to latch plate direction movement tendency, can just two saw blades can be carried out clamping or release fast without instrument, make two saw blades be close to installation during clamping, can move back and forth again.
One end of described back-moving spring and the terminal butt of locking pin, the madial wall butt of the other end and clamp applies to the power of latch plate direction motion locking pin.
The contacted one side in the installation position of described latch plate and each saw blade is set to waveform, even make that thicker latch plate also can have certain elasticity, to guarantee that saw blade more successfully is inserted in the mounting groove, has certain thrust simultaneously again.
Compared with prior art, the invention has the advantages that: because the installation position of saw blade and cutting main body are the linear pattern parts, relatively easily guarantee two depth of parallelisms between the saw blade; By punch forming boss on saw blade therein, be inserted in the pilot hole of another saw blade, because boss is hard and bigger with the contact area of pilot hole, can bear bigger power, in high-speed motion, can keep the long time, be particularly useful for cutting metal; Sawtooth and cutting main body are set to have the tooth drift angle, can be so that saw blade be subjected to all the time towards the component of two saw blade composition surface directions, thus further prevent bifurcated; By clamp mechanism reciprocating lever is connected with saw blade, can realize the clamping of saw blade and discharge the state that keeps two saw blades to be close to and can be reciprocating simultaneously fast by instrument.
Description of drawings
Fig. 1 is the structural representation of reciprocating saw of the present invention;
Fig. 2 is the structural representation (hidden parts housing) of reciprocating saw of the present invention;
Fig. 3 is the schematic diagram of saw blade of the present invention;
Fig. 4 is the decomposition texture schematic diagram of saw blade of the present invention;
Fig. 5 is the cutaway view of saw blade of the present invention;
Fig. 6 is the side view of saw blade of the present invention;
Fig. 7 is the decomposing schematic representation of clamping device of the present invention;
Fig. 8 is the cutaway view of clamping device of the present invention.
The specific embodiment
Describe in further detail below in conjunction with the present invention of accompanying drawing embodiment.
Referring to Fig. 1 and Fig. 2, a kind of electric reciprocating saw, comprise casing 1, be set in parallel in first reciprocating lever 21 and second reciprocating lever 22 in the casing 1, being detachably connected on by first clamping device 31 thus can be by the first reciprocating saw blade 41 of first reciprocating lever, 21 drives on first reciprocating lever 21, and being detachably connected on by second clamping device 31 thus can be by the second reciprocating saw blade 42 of second reciprocating lever, 22 drives on second reciprocating lever 22.
Referring to Fig. 3-Fig. 6, first saw blade 41 comprises that the first cutting main body 411 and first installation position, 412, the second saw blades 42 that are the plane comprise second cutting main body 421 and second installation position 422 that is the plane equally.With the first cutting main body 411 and the 412 dislocation welding of first installation position, the second cutting main body 421 and second installation position, 422 same dislocation welding (namely amplexiform in the first cutting main body, 411 outsides first installation position 412, and the outside in the second cutting main body 421 is amplexiformed in second installation position 422).Exist the magnitude of misalignment of saw blade cutting body thickness between each saw blade cutting main body after welding is good and the corresponding installation position, in general the thickness of saw blade cutting main body is about 0.9mm-2mm.The one side that two installation positions is welded with the cutting main body is oppositely arranged, and makes two cutting main bodys be close to thus.
In order to make reciprocating saw of the present invention be fit to the various materials of cutting, stretch out in the cutting main body of two saw blades on the part of casing 1 guiding and fixture are not set, in relative motion process at a high speed, phenomenons such as jag probably take place thus.Therefore, one is cut main body therein, as offering the pilot hole 413 that extends along cut direction on the first cutting main body 411, the relevant position of the second cutting main body 421 is provided with fixing hole 423, the edge of pilot hole 413 outside sides has inclined-plane 414, be used for cooperating with rivet 426, rivet 426 penetrates in the fixing hole 423 and 421 riveted joints of the second cutting main body after passing pilot hole 413, and on the inclined-plane 414 places are blocked two cutting main bodys tensions, rivet 426 slides in pilot hole 413, makes that two saw blades can be reciprocating.
Be provided with boss 424 with the adjacent part of fixing hole 423 (rivet 426) on the second cutting main body 421, preferably, be rectangle, boss 424 is by the 421 direct punch formings of the second cutting main body, equally also extend in the pilot hole 413, the width of its width and pilot hole 413 coupling, boss 424 also can be arranged on other positions on the second cutting main body 421, and the position assurance of boss 424 can cooperate with pilot hole 413 and gets final product.Because the hardness of the hardness of boss 424 and the second cutting main body 421 is suitable, and be that a bigger face contact with the contact-making surface of pilot hole 413, so can in high-speed motion, keep than the time of growing.
There is the first tooth drift angle α 1 between first sawtooth 415 on the first cutting main body 411 and the first cutting main body 411, exist 2, two tooth drift angles of the second tooth drift angle α to be acute angle and direction unanimity between second sawtooth 425 on the second cutting main body 421 and the second cutting main body 421.Two arrows on Fig. 6 are represented the cut direction of two saw blades respectively.When saw blade moves in cut direction, simultaneously during cutting material, material can produce towards the component of two saw blade composition surface directions sawtooth, have the component Fv ' opposite with cut direction and towards the component Fc ' on two saw blade composition surfaces as the power F ' that the first cutting main body 411 is produced, the power F that the second cutting main body 421 is produced has and opposite with cut direction separates Fv and towards the component Fc on two saw blade composition surfaces.When cutting, all the time effectively with the directive effect of two saw blades towards gathering, prevent that bifurcated from producing thus.
The crown direction of first sawtooth 415 and second sawtooth 425 is opposite, when the direction of motion of saw blade is identical with the crown direction, is cut state; When the direction of motion of saw blade is opposite with the crown direction, be the return state, i.e. non-cut state.
Better fix in order to be in the saw blade of being close to state with two, can move back and forth again simultaneously, wish not use extra instrument that two saw blades are carried out clamping or release fast in addition, be provided with first clamping device 31 that first saw blade 411 is connected with first reciprocating lever 21, second clamping device 32 that second saw blade 421 is connected with second reciprocating lever 22.First clamping device 31 is identical with the structure of second clamping device 32, in the present embodiment, above-mentioned clamping device comprises the side of an end and the end fixed grip block 33 of reciprocating lever, clamp 33 also offers mounting groove 331 on the same side adjacent with this fixed position, the installation position of saw blade is inserted in the mounting groove 331, can make that saw blade is parallel with reciprocating lever and maintains a certain distance.Also comprise rubber-like latch plate 34, thereby the bending of the two ends up and down of latch plate 34 is fixing with clamp 33, the installation position of saw blade is pressed between clamp 33 and the latch plate 34 thus.
In order to prevent that each saw blade from leaving clamp 33 at vibration-direction, clamping device also is provided with locking mechanism, comprise locking pin 35, has outwards outstanding clamping ramps 332 on the another side of clamp 33, locking pin 35 wears in the clamp 33 from mounting groove 331 one side of clamp 33, and passes from clamping ramps 332 and to extend in the locking button 36 that is arranged on this outside and fix.Be arranged with back-moving spring 37 on the locking pin 35, an end of back-moving spring 37 and the terminal butt of locking pin 35, the madial wall butt of the other end and clamp 33.
Locking button 36 has the pulling part 361 that cooperates with clamping ramps 332, when making it, operation pulling part 361 rotates the outermost (being clamping ramps 332 thickness) that arrives clamping ramps 332 along clamping ramps 332, this moment, back-moving spring 37 was compressed, locking pin 35 is positioned at highest point (from Fig. 8), namely be positioned at the bottom surface of mounting groove 331, and the gap maximum that exists between the latch plate 34 can be packed saw blade into or extract; When making it rotate along clamping ramps 332, operation pulling part 361 arrives clamping ramps 332 the most inboard (being clamping ramps 332 thinnest parts), this moment, back-moving spring 37 resetted, locking pin 35 is positioned at lowest part (from Fig. 8), at this moment, its end has passed the installing hole of offering on the terminal installation position of saw blade (first installing hole 417 and second installing hole 427) and has arrived latch plate 34, thereby prevents that saw blade from leaving grip block 33 at vibration-direction.
Preferably, latch plate 34 is set to waveform with the contacted one side of saw blade, even make that thicker latch plate 34 also can have certain elasticity, to guarantee that saw blade more successfully is inserted in the mounting groove 331, has certain thrust simultaneously again.
The above is preferred embodiment of the present invention only, should be pointed out that for the ordinary skill in the art, not breaking away under the principle prerequisite of the present invention, can also make various deformation and improvement, and this also should be considered as protection scope of the present invention.

Claims (9)

1. the paired saw blade structure of a reciprocating saw, comprise first saw blade (41) and second saw blade (42) that be arranged in parallel, described first saw blade (41) comprises first cutting main body (411) and first installation position (412), described second saw blade (42) comprises second cutting main body (421) and second installation position (422), offer the pilot hole (413) that extends along cut direction on the described first cutting main body (411), the rivet (426) that passes pilot hole (413) penetrate the second cutting main body (421) thus will described first saw blade (41) and second saw blade (42) strain, it is characterized in that:
The described first cutting main body (411) and first installation position (412) are plane and dislocation welding, and the described second cutting main body (421) and second installation position (422) are plane and dislocation welding;
The described second cutting main body (421) goes up punch forming the boss (424) that can extend in the pilot hole (413), the width coupling of the width of described boss (424) and pilot hole (413).
2. paired saw blade structure as claimed in claim 1, it is characterized in that: have the first tooth drift angle (α 1) between first sawtooth (415) on the described first cutting main body (411) and the first cutting main body (411), have the second tooth drift angle (α 2) between second sawtooth (425) on the described second cutting main body (421) and the second cutting main body (421), the described first tooth drift angle (α 1) is acute angle with the second tooth drift angle (α 2) and direction is consistent.
3. paired saw blade structure as claimed in claim 1 or 2, it is characterized in that: the outside side of described pilot hole (413) has inclined-plane (414), is used for cooperating with rivet (426).
4. paired saw blade structure as claimed in claim 1 or 2 is characterized in that: described first saw blade (41) is connected with corresponding reciprocating lever by clamping device respectively with second saw blade (42).
5. paired saw blade structure as claimed in claim 4, it is characterized in that: described clamping device comprises side and the end fixed grip block of reciprocating lever (33) of an end, be fixed on the latch plate (34) of described clamp (33) side, clamp (33) fixedly has and also offers the mounting groove (331) that inserts for the installation position of each saw blade on this side of described latch plate (34), and described clamp (33) and latch plate (34) clamping mutually compress the installation position thus.
6. paired saw blade structure as claimed in claim 5, it is characterized in that, also comprise and prevent that each saw blade from leaving the locking mechanism of described clamp (33) at vibration-direction, described locking mechanism comprises locking pin (35), has outwards outstanding clamping ramps (332) on the another side of described clamp (33), described locking pin (35) passes the installation position successively, extend in the locking button (36) that is arranged on clamp (33) outside also fixing behind the clamp (33), described locking button (36) can rotate along clamping ramps (332) and make locking pin (35) insert or leave the installation position, is arranged with on the described locking pin (35) to make locking pin (35) keep the back-moving spring (37) to latch plate (34) direction movement tendency.
7. paired saw blade structure as claimed in claim 6 is characterized in that: the terminal butt of an end of described back-moving spring (37) and locking pin (35), the madial wall butt of the other end and clamp (33).
8. paired saw blade structure as claimed in claim 5 is characterized in that: described latch plate (34) is set to waveform with the contacted one side in installation position of each saw blade.
9. paired saw blade structure as claimed in claim 6 is characterized in that: described latch plate (34) is set to waveform with the contacted one side in installation position of each saw blade.
CN201310260299.XA 2013-06-26 2013-06-26 A kind of paired saw blade structure of reciprocating saw Expired - Fee Related CN103317189B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103975782A (en) * 2014-05-20 2014-08-13 王光树 Lopping device
WO2015176416A1 (en) * 2014-05-22 2015-11-26 宁波黑松工具有限公司 Double-saw-blade reciprocating saw
CN105665820A (en) * 2016-03-18 2016-06-15 浙江亚特电器有限公司 Support device for reciprocating saw
CN112828391A (en) * 2019-11-24 2021-05-25 常德市联嘉机械有限公司 Cutting device for machining capable of achieving dust collection

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Publication number Priority date Publication date Assignee Title
US4798001A (en) * 1986-11-11 1989-01-17 Black & Decker Inc. Saw blade for a saw having reciprocating blades
US5016356A (en) * 1989-09-28 1991-05-21 Trench Anthony B Saw and saw blade for use therein
US5193280A (en) * 1991-02-25 1993-03-16 Black & Decker, Inc. Saw blades and method of making same
CN2772701Y (en) * 2005-03-04 2006-04-19 扬州全世好机电工贸有限公司 Double saw bit device of forward and backward turn cutter
CN201596812U (en) * 2009-12-31 2010-10-06 铁鎯电动工具有限公司 Device with two saw blades
CN102672268A (en) * 2011-03-11 2012-09-19 南京德朔实业有限公司 Saw cutting cutter
CN102905830A (en) * 2011-03-07 2013-01-30 注入品牌公司 Dual blade reciprocating saw
CN202824854U (en) * 2012-06-15 2013-03-27 宁波黑松工具有限公司 Quick assembly and disassembly structure for saw blade of reciprocating saw
CN103084661A (en) * 2013-03-01 2013-05-08 宁波捷美进出口有限公司 Double saw blade structure for electric saw
CN203401153U (en) * 2013-06-26 2014-01-22 宁波黑松工具有限公司 Paired saw blade structure of reciprocating saw

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798001A (en) * 1986-11-11 1989-01-17 Black & Decker Inc. Saw blade for a saw having reciprocating blades
US5016356A (en) * 1989-09-28 1991-05-21 Trench Anthony B Saw and saw blade for use therein
US5193280A (en) * 1991-02-25 1993-03-16 Black & Decker, Inc. Saw blades and method of making same
CN2772701Y (en) * 2005-03-04 2006-04-19 扬州全世好机电工贸有限公司 Double saw bit device of forward and backward turn cutter
CN201596812U (en) * 2009-12-31 2010-10-06 铁鎯电动工具有限公司 Device with two saw blades
CN102905830A (en) * 2011-03-07 2013-01-30 注入品牌公司 Dual blade reciprocating saw
CN102672268A (en) * 2011-03-11 2012-09-19 南京德朔实业有限公司 Saw cutting cutter
CN202824854U (en) * 2012-06-15 2013-03-27 宁波黑松工具有限公司 Quick assembly and disassembly structure for saw blade of reciprocating saw
CN103084661A (en) * 2013-03-01 2013-05-08 宁波捷美进出口有限公司 Double saw blade structure for electric saw
CN203401153U (en) * 2013-06-26 2014-01-22 宁波黑松工具有限公司 Paired saw blade structure of reciprocating saw

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103975782A (en) * 2014-05-20 2014-08-13 王光树 Lopping device
CN103975782B (en) * 2014-05-20 2016-03-23 国网山东省电力公司聊城供电公司 Lopping device
WO2015176416A1 (en) * 2014-05-22 2015-11-26 宁波黑松工具有限公司 Double-saw-blade reciprocating saw
CN105665820A (en) * 2016-03-18 2016-06-15 浙江亚特电器有限公司 Support device for reciprocating saw
CN105665820B (en) * 2016-03-18 2018-07-17 浙江亚特电器有限公司 A kind of support device of reciprocating saw
CN112828391A (en) * 2019-11-24 2021-05-25 常德市联嘉机械有限公司 Cutting device for machining capable of achieving dust collection

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