CN106424932A

CN106424932A - Force balance handsaw

Info

Publication number: CN106424932A
Application number: CN201611011572.5A
Authority: CN
Inventors: 唐国峰; 顾永杰
Original assignee: Huzhou Feng Feng Hardware Trading Co Ltd
Current assignee: Xuzhou LIBOR industry and Trade Co.,Ltd.
Priority date: 2016-11-17
Filing date: 2016-11-17
Publication date: 2017-02-22
Anticipated expiration: 2036-11-17
Also published as: CN106424932B

Abstract

The invention relates to the field of tools and equipment, in particular to a force balance handsaw. The force balance handsaw is characterized by comprising a saw frame, a saw blade mounted on the saw frame and a handle connected with the saw frame, and further comprises a shoulder pad worn on the shoulder of an operator and a connecting rope for connecting the shoulder pad with the saw frame; the connecting rope comprises a soft body part, which is made of a soft body material and is connected with the shoulder pad, and a hard body part connected with the soft body part; the hard body part is connected with the saw frame. The invention aims to provide the force balance handsaw which highly fits with hands of a worker, so that the stability of moving trajectory of the saw blade is enhanced in the process of pushing the handsaw, the safety factor is improved, and a part of force of the handsaw is transferred to the shoulder, and hand fatigue is relieved.

Description

A kind of stress balance handsaw

Technical field

The present invention relates to tool equipment field is and in particular to a kind of stress balance handsaw.

Background technology

Hand saws, because its lightly flexible, quick use, is a common instrument, becomes people house instrument and factory Industry tools.Hand saws includes support, lever and saw blade, and common structure such as publication No. is that the China of CN 103878438 A is special Structure disclosed in sharp file, saw blade is treated processing object in the presence of people's thrust and is carried out sawization cutting.For another example notification number is A kind of back detachable hand saw that the Chinese patent document of 100546746C is announced, is carried out for saw blade and operation connected mode simultaneously Optimization is so that the dismounting of saw blade and fastening become more convenient.

But such structure still has certain deficiency, the use of handsaw fully relies on manpower cutting, with putting forth effort Exhaust, the action of cutting has deformation, the track pushing away saw has deviation, on the one hand, the section of cutting has not neat situation and goes out Existing, on the other hand it may appear that oarsman or even situation about slipping out of the hand, cause potential safety hazard.

Additionally, traditional pushes away saw work, it is all to be had an effect by the hand of workman.Simple hand firmly can increase hand for a long time The fatigue burden in portion.

Content of the invention

It is an object of the invention to provide a kind of stress balance handsaw, high with workman's hand laminating degree, strengthen during pushing away saw The stability of saw blade motion track, lifts safety coefficient, and a part of stress of handsaw is transferred to shoulder, alleviated hand fatigue.

The above-mentioned technical purpose of the present invention technical scheme is that：A kind of stress balance handsaw, bag The saw blade containing saw frame, being arranged on saw frame and the lever being connected with described saw frame, described lever comprises the connection being connected with saw frame Portion is connected with described connecting portion, becomes curve, and conflicts for the back of the hand contact part with the conflict of operator's the back of the hand with described the back of the hand The upper stopper that portion connects, described upper stopper gradually tilts upward by away from described the back of the hand contact part direction；Described the back of the hand is conflicted Portion is provided with the steady back piece for fixing the back of the hand, and described upper stopper is provided with for entering gap between finger thus to increase finger steady Qualitatively crack piece.Also comprise the shoulder protector for being worn on operator's shoulder and the connection connecting described shoulder protector and described saw frame Rope, described connecting rope comprises the soft body be made up of soft material and be connected with described shoulder protector and hard with what described soft body was connected Body, described hardware portion is connected with saw frame.

Preferred as the present invention, described shoulder protector comprises multiple monolithics, and described monolithic is curved, and described monolithic offers Air-vent, is provided with fixed block below described monolithic, described fixed block is provided with the rubbing surface of undulate.

Preferred as the present invention, described saw frame is provided with cutter sweep and for controlling the operation of described cutter sweep to open Close；Described cutter sweep comprise the rotating seat being rotatably connected on described saw frame, the extending column being hinged on described rotating seat and It is connected to the cutter of described extending column end；Described cutter comprises drill bit and multiple mill being detachably connected on extending column Piece, described drill bit is located in the middle of multiple described diaphragms, described rotating seat opens up promising described extending column and rotates offer space Hold post groove.

Described saw blade is arranged on described saw frame, for cutting object.The hand-held described lever of user is operated, described company Socket part and described saw blade connect, and described connecting portion is connected with described saw frame, and described the back of the hand contact part becomes curve, and fit user The back of the hand position, and described upper stopper then clasps four fingers of user, increases stability.

Further, described the back of the hand contact part is provided with described steady back piece, at described steady back piece increase and user's the back of the hand Friction anti-skid factor, increases the stability of the back of the hand, thus increasing polarization in pushing away saw action for the whole handsaw.Further , described crack piece, in actual production, could be arranged to multiple, such as three, and four fingers have three cracks, described folder Patch is put in these three finger cracks, clamps for finger, increases skid resistance further.

Different from common manual labor, during handsaw cutting, very big to the physical fitness requirement of user, and here is basic On, user still will hold handsaw using a part of strength, which further adds physical demands.And work as and be short of physical strength When, hand shaking or the phenomenon of positioning shakiness not only occur, arises that the uneven situation with damaged products in saw face, more dangerous It is that if slipping out of the hand, sawtooth can hurt oneself, has certain potential safety hazard.So the major design of the technical program is to increase Plus hand, the especially tightness of the back of the hand and finger part and stability, on the one hand it is not easily tied after long working, On the other hand being not easy skating increases security.

Described extending column can rotate in described appearance post groove, and when only pushing away saw action, described extending column is dug, and keeps away Exempt to interfere.When needing boring, user turns down described extending column so that described cutter is near the cutting such as such as plank Thing.Press described Operation switch, control described bit.It is also equipped with described saw frame driving described cutter sweep running Driving means, such as fractional motor and connection circuit, but in order to reduce the weight of whole handsaw, using small size small-power horse Reach.Described abrasive disc may be selected to install, and for example, if punching needs aperture larger, just installs described abrasive disc, multiple described abrasive discs Rotate, also rotatable get wide-aperture hole.Or go to contact article to be processed with the lateral surface of described abrasive disc, reach edging, The effect of smooth incisions.

Described circulator itself can rotate, thus finely tuning the operating angle of described cutter.

In addition, in the present case, ad hoc shoulder protector.Described shoulder protector can be worn on the shoulder of user, assume responsibility for a part Power.And described shoulder protector is made up of multiple described monolithics, user can adjust described monolithic according to the actual stature situation of oneself Quantity, and multiple described monolithic, can fold as fan covering of the fan each other, be easy to store and carry.

Multiple described air-vents are additionally provided with described monolithic, increase the wearing comfort of user.Described fixed block is located at institute State shoulder protector bottom surface, that is, near the one side of user's shoulder, for increasing stationarity, anti-sliding stop.The bottom surface of described fixed block For described rubbing surface, specifically, it is waveform, increase the frictional force with shoulder.

Described connecting rope comprises two parts, top, the institute that the part connecting is made for soft material with described shoulder protector State soft body, this part possesses certain elasticity, for having certain actionable space during pushing away saw for user, do not interfere The action of user.And described hardware portion then provides certain supporting role.

Preferred as the present invention, described rotating seat is provided with the limited post for fixing described extending column rotational angle, Described limited post can be inserted into described extending column.

Preferred as the present invention, also include servicing unit, described servicing unit is located on described saw frame, comprise cleaning pipe With the flowline for spraying lubricating oil.

Described cleaning pipe can be with jet it is also possible to spray water, for cleaning object surface to be processed.

Preferred as the present invention, described steady back piece comprises the main back of the body being connected on described the back of the hand contact part and is located at described The curved parcel wing in main back of the body both sides, described parcel wing is gradually drawn close to described upper stopper direction by away from described main back of the body direction, It is convexly equipped with the solid bar of the back of the body outside described main back.

Described main back portion is close to user's the back of the hand, and described parcel wing then wraps the hand of user, increases further from both sides The stress of hand back part consolidates.Admittedly bar is filled on the described main back of the body and user's the back of the hand the described back of the body, had both increased stability, and had increased again and relax Suitable sense and degree of being close to.

Preferred as the present invention, bar is provided with the rib being made up and for rubbing with the back of the hand of elastomeric material to the described back of the body admittedly Block.

Preferred as the present invention, described crack piece is three.

Preferred as the present invention, described crack piece is convexly equipped with evagination arc rib outward, described outer convex arc rib is used for and finger Conflict.

Described outer convex arc rib is outwardly, after user holds, this part be with the finger pulp loss bending inside conflict, Laminating is soft, and finger stability is higher.

Preferred as the present invention, described saw frame offers link slot, described saw blade is arranged in described link slot.

Described saw blade is arranged in described link slot, user can difference as requested saw blade is carried out dismounting and more Change, convenient and swift.

Preferred as the present invention, described saw blade comprises insert plate and sawtooth, and described insert plate embeds and is arranged on described company In access slot.

Preferred as the present invention, described insert plate is provided with multiple locking pieces, and described locking piece comprises by elastomeric material The bullet seat made and the button column being located on described bullet seat, described link slot has the location hole with the cooperation of described button column.

Described insert plate is installed in described link slot, the described locking piece just position to the relatively described saw frame of described saw blade Carry out maintenance, described button column enters described location hole under the elastic force of described bullet seat.In true production, described location hole and institute It is multiple for stating button column, and polarization is strong, and described saw blade is not in loose shift during pushing away saw for a long time, it is to avoid reduce work Make efficiency.

Preferred as the present invention, described saw blade comprises the body being connected with described insert plate, and described sawtooth is connected to institute State on body, described sawtooth comprises rough sawn sawtooth and jig saw sawtooth, the sawtooth arrangement of described jig saw sawtooth is close to saw in described rough sawn The sawtooth arrangement of tooth.

Preferred as the present invention, the more described rough sawn sawtooth of described jig saw sawtooth is closer to described lever.

Described rough sawn sawtooth partly be suitable for needs cut energetically, the situation of section, described jig saw sawtooth be suitable for into Row fine cut, or the situation of small-bore shallow section, described jig saw sawtooth is arranged on afterbody, that is, closer to the position of user's hand Put, the hand with user, with the distance of described lever closer to the degree that becomes more meticulous of operation is higher.

In sum, the present invention has the advantages that：

1st, described shoulder protector can provide user the support during pushing away saw, increases stress balance.

2nd, described shoulder protector includes multiple monolithics, easy to adjust, also allows for storing.

3rd, described cutter can treat processing object carry out drilling operation.

4th, described abrasive disc is detachably installed, and user can carry out large-diameter borehole or edging using described abrasive disc.

5th, described flowline and described cleaning pipe can treat respectively processing object surface be lubricated oil spray and with water or Gas is cleaned.

6th, described lever adopts particular design, reduces user's physical demands.

7th, described steady back piece and described crack piece increase the stability with hand hand further.

8th, described saw blade and saw frame are detachably connected.

9th, described sawtooth comprises rough sawn and two kinds of sawtooth of jig saw, and, closer to user's hand, refinement is more convenient for jig saw.

10th, described locking piece can strengthen the stationarity of described saw blade, is difficult to shift.

Brief description

Fig. 1 is the schematic diagram of embodiment 1；

Fig. 2 is the schematic diagram that Fig. 1 hides cutter sweep and shoulder protector；

Fig. 3 is enlarged diagram at Fig. 2A；

Fig. 4 is enlarged diagram at Fig. 2 B；

Fig. 5 is the schematic diagram of lever；

Fig. 6 is the schematic diagram of cutter sweep in Fig. 1；

Fig. 7 is the schematic diagram of shoulder protector in Fig. 1 and connecting rope；

Fig. 8 is the schematic diagram of monolithic.

In figure：

1st, saw frame, 11, link slot, 2, saw blade, 21, insert plate, 24, locking piece, 241, bullet seat, 242, button column, 22, body, 23, Sawtooth, 231, rough sawn sawtooth, 232, jig saw sawtooth, 3, lever, 31, connecting portion, 32, the back of the hand contact part, 33, upper stopper, 34, steady Back piece, 341, the main back of the body, 342, parcel wing, 35, the solid bar of the back of the body, 351, rib block, 36, crack piece, 361, outer convex arc rib, 4, cutting dress Put, 41, rotating seat, 411, hold post groove, 42, extending column, 43, cutter, 431, drill bit, 432, abrasive disc, 5, limited post, 6, auxiliary Device, 61, cleaning pipe, 62, flowline, 7, Operation switch, 8, shoulder protector, 81, monolithic, 82, air-vent, 83, fixed block, 831, rub Wiping face, 9, connecting rope, 91, soft body, 92, hardware portion.

Specific embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art Member can make to the present embodiment after reading this specification as needed does not have the modification of creative contribution, but as long as at this All protected by Patent Law in the right of invention.

Embodiment 1, as shown in Fig. 1 Fig. 5, a kind of stress balance handsaw, comprise saw frame 1, the saw being arranged on saw frame 1 Bar 2 and the lever 3 being connected with saw frame 1, the connecting portion 31 that lever 3 comprises to be connected with saw frame 1 is connected with connecting portion 31, becomes curve, And it is used for the upper stopper 33 be connected with the back of the hand contact part 32 of operator's the back of the hand conflict and with the back of the hand contact part 32, upper stopper 33 is pressed Gradually tilt upward away from the back of the hand contact part 32 direction；The back of the hand contact part 32 is provided with the steady back piece 34 for fixing the back of the hand, Upper stopper 33 is provided with for entering gap between finger thus increasing the crack piece 36 of finger stability.

Saw blade 2 is arranged on saw frame 1, for cutting object.The hand-held lever of user 3 is operated, connecting portion 31 and saw blade 2 Connect, and connecting portion 31 is connected with saw frame 1,32 one-tenth of the back of the hand contact part curve, the back of the hand position of the user that fits, and upper stopper 33 Then clasp four fingers of user, increase stability.

Further, the back of the hand contact part 32 is provided with steady back piece 34, and steady back piece 34 increases is prevented with the friction at user's the back of the hand Sliding coefficient, increases the stability of the back of the hand, thus increasing polarization in pushing away saw action for the whole handsaw.Further, crack Piece 36, in actual production, could be arranged to multiple, such as three, and four fingers have three cracks, and crack piece 36 is put into In these three finger cracks, clamp for finger, increase skid resistance further.

Steady back piece 34 comprises the main back of the body 341 being connected on the back of the hand contact part 32 and is located at the curved bag in the main back of the body 341 both sides Wrap up in wing 342, parcel wing 342 by away from the main back of the body 341 directions gradually upwards stopper 33 direction draw close, outer on the main back of the body 341 be convexly equipped with the back of the body Gu bar 35.

The main back of the body 341 parts are close to user's the back of the hand, and parcel wing 342 then wraps the hand of user from both sides, increases hand further The stress of back portion consolidates.The solid bar 35 of the back of the body is filled on the main back of the body 341 and user's the back of the hand, has both increased stability, increases comfort again With degree of being close to.

The solid bar 35 of the back of the body is provided with to be made up of elastomeric material and for the rib block 351 with the back of the hand friction.Crack piece 36 is three. It is convexly equipped with evagination arc rib 361, outer convex arc rib is used for and finger is conflicted outside on crack piece 36.Outer convex arc rib 361 is outwardly, user After holding, this part be with the finger pulp loss bending inside conflict, laminating soft, finger stability is higher.

Link slot 11 is offered on saw frame 1, saw blade 2 is arranged in link slot 11.Saw blade 2 is arranged in link slot 11, uses Family can difference as requested carry out demolition and replacement to saw blade, convenient and swift.Saw blade 2 comprises insert plate 21 and sawtooth 23, Insert plate 21 embeds and is arranged in link slot 11.Insert plate 21 is provided with multiple locking pieces 24, and locking piece 24 comprises by elastic material Expect the bullet seat 241 made and the button column 242 being located on bullet seat 241, link slot 11 has the location hole with button column 242 cooperation.

Insert plate 21 is installed in link slot 11, and locking piece 24 just carries out maintenance to the position of saw blade 2 saw frame 1 relatively, button Post 242 enters location hole under the elastic force of bullet seat 241.In true production, location hole and button column 242 are multiple, and polarization is strong, Saw blade 2 is not in loose shift during pushing away saw for a long time, it is to avoid reduce operating efficiency.

Saw blade 2 comprises the body 22 being connected with insert plate 21, and sawtooth 23 is connected on body 22, and sawtooth 23 comprises rough sawn saw Tooth 231 and jig saw sawtooth 232, the close sawtooth arrangement in rough sawn sawtooth 231 of sawtooth arrangement of jig saw sawtooth 232.Jig saw sawtooth 232 Compared with rough sawn sawtooth 231 closer to lever 3.

The needs that are partly suitable for of rough sawn sawtooth 231 are cut energetically, the situation of section, and jig saw sawtooth 232 is appropriate to Fine cut, or the situation of small-bore shallow section, jig saw sawtooth 232 is arranged on afterbody, that is, closer to the position of user's hand, with The hand of user, with the distance of lever 3 closer to the degree that becomes more meticulous of operation is higher.

As shown in figures 1 to 6：Saw frame 1 is provided with cutter sweep 4 and the Operation switch 7 for controlling cutter sweep 4；Cut Cut device 4 to comprise the rotating seat 41 being rotatably connected on saw frame 1, the extending column 42 being hinged on rotating seat 41 and be connected to extension The cutter 43 of post 42 end；Cutter 43 comprises drill bit 431 and multiple abrasive disc 432 being detachably connected on extending column 42, Drill bit 431 is located in the middle of multiple diaphragms 432, rotating seat 41 opens up promising extending column 42 and rotates the appearance post groove 411 providing space.

Extending column 42 can rotate in holding post groove 411, and when only pushing away saw action, extending column 42 is dug, it is to avoid sends out Raw interference.When needing boring, user turns down extending column 42 so that cutter 43 is near cut substrate such as such as planks.Press Operation switch 7, controls drill bit 431 to rotate.It is also equipped with saw frame 1 driving the driving means of cutter sweep 4 running, such as pony Reach and connect circuit, but in order to reduce the weight of whole handsaw, using small size low-power motor.Abrasive disc 432 may be selected peace Dress, for example, if punching needs aperture larger, just installs abrasive disc 432, multiple abrasive discs 432 rotate, also rotatable gets macropore The hole in footpath.Or go to contact article to be processed with the lateral surface of abrasive disc 432, reach edging, the effect of smooth incisions.

Circulator 41 can rotate, thus finely tuning the operating angle of cutter 43 itself.

Rotating seat 41 is provided with the limited post 5 for securing elongated post 42 rotational angle, and limited post 5 can be inserted into extending column 42.

Also include servicing unit 6, servicing unit 6 is located on saw frame 1, comprise to clean pipe 61 and for spraying going out of lubricating oil Oil pipe 62.Cleaning pipe 61 can be with jet it is also possible to spray water, for cleaning object surface to be processed.

As shown in Fig. 1, Fig. 7 and Fig. 8：Also comprise the shoulder protector 8 for being worn on operator's shoulder and connect shoulder protector 8 and saw frame 1 connecting rope 9, connecting rope 9 is comprised the soft body 91 being made up of soft material and be connected with shoulder protector 8 and is connected with soft body 91 Hardware portion 92, hardware portion 92 is connected with saw frame 1.

Preferred as the present invention, shoulder protector 8 comprises multiple monolithics 81, and monolithic 81 is curved, monolithic 81 offers ventilative Hole 82, is provided with fixed block 83 below monolithic 81, fixed block 83 is provided with the rubbing surface 831 of undulate.

In the present case, ad hoc shoulder protector 8.Shoulder protector 8 can be worn on the shoulder of user, assume responsibility for a part of power.And protect Shoulder 8 is made up of multiple monolithics 81, and user can adjust the quantity of monolithic 81 according to the actual stature situation of oneself, and multiple list Piece 81, can fold each other as fan covering of the fan, be easy to store and carry.

Multiple air-vents 82 are additionally provided with monolithic 81, increase the wearing comfort of user.Fixed block 83 is located under shoulder protector 81 Bottom surface, that is, near the one side of user's shoulder, for increasing stationarity, anti-sliding stop.The bottom surface of fixed block 83 is rubbing surface 831, specifically, it is waveform, increase the frictional force with shoulder.

Connecting rope 9 comprises two parts, top, the soft body 91 that the part connecting with shoulder protector 8 is made for soft material, This part possesses certain elasticity, for having certain actionable space during pushing away saw for user, does not interfere moving of user Make.And hardware portion 92 then provides certain supporting role.

Claims

1. a kind of stress balance handsaw, comprises saw frame（1）, be arranged on saw frame（1）On saw blade（2）And with described saw frame（1）Even The lever connecing（3）It is characterised in that：Described lever（3）Comprise and saw frame（1）The connecting portion connecting（31）, and described connecting portion （31）Connect, become curve, and the back of the hand contact part for conflicting with operator's the back of the hand（32）And with described the back of the hand contact part（32） The upper stopper connecting（33）, described upper stopper（33）By away from described the back of the hand contact part（32）Direction gradually tilts upward；Institute State the back of the hand contact part（32）It is provided with the steady back piece for fixing the back of the hand（34）, described upper stopper（33）It is provided with for entering to start with Gap between finger is thus increase the crack piece of finger stability（36）;Also comprise the shoulder protector for being worn on operator's shoulder（8）With Connect described shoulder protector（8）With described saw frame（1）Connecting rope（9）, described connecting rope（9）Comprise to be made up of soft material and with institute State shoulder protector（8）The soft body connecting（91）And with described soft body（91）The hardware portion connecting（92）, described hardware portion（92）With Saw frame（1）Connect.

2. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described shoulder protector（8）Comprise multiple monolithics （81）, described monolithic（81）Curved, described monolithic（81）On offer air-vent（82）, described monolithic（81）Lower section is provided with solid Determine block（83）, described fixed block（83）It is provided with the rubbing surface of undulate（831）.

3. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described saw frame（1）It is provided with cutting dress Put（4）With for controlling described cutter sweep（4）Operation switch（7）；Described cutter sweep（4）Comprise to be rotatably connected on described Saw frame（1）On rotating seat（41）, be hinged on described rotating seat（41）On extending column（42）Be connected to described extending column （42）The cutter of end（43）；Described cutter（43）Comprise drill bit（431）It is detachably connected on extending column with multiple（42） On abrasive disc（432）, described drill bit（431）Positioned at multiple described diaphragms（432）Centre, described rotating seat（41）On open up promising Described extending column（42）Rotate the appearance post groove that space is provided（411）.

4. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described rotating seat（41）Be provided with for Fixing described extending column（42）The limited post of rotational angle（5）, described limited post（5）Can be inserted into described extending column（42）.

5. a kind of stress balance handsaw according to claim 1 it is characterised in that：Also include servicing unit（6）, described auxiliary Help device（6）Positioned at described saw frame（1）On, comprise cleaning pipe（61）With the flowline for spraying lubricating oil（62）.

6. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described steady back piece（34）Comprise to be connected to Described the back of the hand contact part（32）On the main back of the body（341）With positioned at the described main back of the body（341）The curved parcel wing in both sides（342）, institute State parcel wing（342）By away from the described main back of the body（341）Direction is gradually to described upper stopper（33）Direction is drawn close, the described main back of the body （341）Upper outer being convexly equipped with carries on the back solid bar（35）, described back of the body bar admittedly（35）It is provided with and be made up of elastomeric material and be used for and the back of the hand friction Rib block（351）.

7. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described crack piece（36）For three, institute State crack piece（36）It is convexly equipped with evagination arc rib outside upper（361）, described outer convex arc rib be used for and finger conflict.

8. a kind of stress balance handsaw according to claim 1 it is characterised in that：Described saw frame（1）On offer connection Groove（11）, described saw blade（2）It is arranged on described link slot（11）In.

9. a kind of stress balance handsaw according to claim 6 it is characterised in that：Described saw blade（2）Comprise insert plate （21）And sawtooth（23）, described insert plate（21）Embed and be arranged on described link slot（11）In.

10. a kind of stress balance handsaw according to claim 7 it is characterised in that：Described insert plate（21）It is provided with many Individual locking piece（24）, described locking piece（24）Comprise the bullet seat being made up of elastomeric material（241）Be located at described bullet seat（241）On Button column（242）, described link slot（11）On have and described button column（242）The location hole of cooperation, described saw blade（2）Comprise and institute State insert plate（21）The body connecting（22）, described sawtooth（23）It is connected to described body（22）On, described sawtooth（23）Comprise Rough sawn sawtooth（231）With jig saw sawtooth（232）, described jig saw sawtooth（232）Sawtooth arrangement close in described rough sawn sawtooth（231） Sawtooth arrangement, described jig saw sawtooth（232）More described rough sawn sawtooth（231）Closer to described lever（3）.