CN106624147A

CN106624147A - Durable efficient hand saw

Info

Publication number: CN106624147A
Application number: CN201611051036.8A
Authority: CN
Inventors: 唐国峰; 顾永杰
Original assignee: Huzhou Feng Feng Hardware Trading Co Ltd
Current assignee: Bengbu Qibang Science and Technology Information Consulting Co., Ltd.
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2017-05-10
Anticipated expiration: 2036-11-25
Also published as: CN106624147B

Abstract

The invention relates to the field of tool equipment, in particular to a durable efficient hand saw. The durable efficient hand saw is realized by virtue of the technical scheme: the durable efficient hand saw comprises a saw rack, a saw blade mounted on the saw rack and a handle connected to the saw rack; the handle comprises a reinforcing sleeve for a user to hold, the reinforcing sleeve successively comprises a main inner layer made from a hard substance, an elastic layer supported by a soft substance and an adsorption layer which is arranged out of the elastic layer and is prepared from a water absorption material from inside to outside; a buffer piece for buffering a pressure is arranged between the main inner layer and the elastic layer, and a plurality of frictional balls are arranged on one face, facing the adsorption layer, of the elastic layer. The invention aims to provide the durable efficient hand saw which is high in compactness to a hand of a worker, and meanwhile, the hand saw can provide various functions of cutting, edging and drilling; the inner layer of the handle is specially treated, so that the durable efficient hand saw is high in durability and also high in degree of comfort of human body.

Description

A kind of durable highly efficient handsaw

Technical field

The present invention relates to tool equipment field, and in particular to a kind of durable highly efficient handsaw.

Background technology

Hand saws, because it lightly flexibly, is fast used, 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 special for the China of the A of CN 103878438 Structure disclosed in sharp file, saw blade treats processing object in the presence of people's thrust and carries 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, for saw blade and operation connected mode simultaneously is carried out Optimization so that the dismounting and fastening of saw blade 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, and the track for pushing away saw has deviation, on the one hand, the section of cutting has not neat situation and goes out It is existing, on the other hand, it may appear that the situation that oarsman even slips out of the hand, cause potential safety hazard.

Additionally, the operation different to the processing needs of object and action, there is cutting, there is edging, but different operations is needed Want operator to use different instruments, be easily reduced efficiency.

Due to pushing away saw action for a long time, in the handle portion of handsaw problems can be produced, for example go out hand perspiration, skating, The harder opponent's of lever holding does not accommodate injury.

The content of the invention

It is an object of the invention to provide a kind of durable highly efficient handsaw, high with workman's hand laminating degree, enhancing is pushed away during saw The stability of saw blade motion track, lifts safety coefficient, while handsaw can provide cutting, edging, drilling several functions, holds Handle internal layer has carried out specially treated, and durability is high, and human comfort's degree is also high.

The present invention above-mentioned technical purpose technical scheme is that：A kind of durable highly efficient handsaw, bag Containing saw frame, the saw blade on saw frame and the lever being connected with the saw frame, the lever includes the connection being connected with saw frame Portion and the connecting portion connect, into curve, and the back of the hand contact part for contradicting with operator's the back of the hand and with the conflict of described the back of the hand The upper stopper of portion's connection, the upper stopper away from the back of the hand contact part direction by gradually inclining upward；Described the back of the hand is contradicted Portion is provided with the steady back piece for fixing the back of the hand, and the upper stopper is provided with for steady so as to increase finger into gap between finger Qualitatively crack piece.The saw frame is provided with cutter sweep and the Operation switch for controlling the cutter sweep；The cutting Device is comprising the rotating seat being rotatably connected on the saw frame, the extending column being hinged on the rotating seat and is connected to described prolonging Stretch the cutter of post end；The cutter includes drill bit and multiple abrasive discs being detachably connected on extending column, the drill bit In the middle of multiple diaphragms, the promising extending column is opened up on the rotating seat and rotates the appearance post groove that space is provided.It is described Lever includes the reinforcing sleeve for holding for user, and the reinforcing sleeve is from inside to outside successively comprising in the master made by hardware material Layer, by software supporting substances elastic layer and be located at the outer adsorption layer by made by absorbent material of the elastic layer；The main internal layer The bolster for compensator or trimmer pressure is provided with and the elastic layer between, the bolster is multiple, circularizes setting, the buffering Part middle part is provided with the indent deformation groove caved inward in circular arc, and the elastic layer is provided with many towards the one side of the adsorption layer Individual friction ball.

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

Further, the back of the hand contact part is provided with the steady back piece, at the 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, so as to increase polarization of the whole handsaw in saw action is pushed away.Further , the crack piece could be arranged to multiple in actual production, and such as three, four fingers have three cracks, the folder Patch is put in these three finger cracks, is clamped for finger, further increases skid resistance.

It is very big to the physical fitness requirement of user during handsaw cuts different from common manual labor, 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, the unstable phenomenon of hand shaking or positioning not only occurs, uneven and damaged products the situation in saw face just occurs, it is more dangerous It is that if slipping out of the hand, sawtooth can hurt oneself, with certain potential safety hazard.So the major design of the technical program is to increase Plus the tightness and stability of hand, especially the back of the hand and finger part, on the one hand it is not easily tied after long working, On the other hand being not easy skating increases security.

The extending column can be rotated in the appearance post groove, and when only pushing away saw action, the extending column is dug, and keeps away Exempt to interfere.When needing drilling, user turns down the extending column so that the cutter is near the cutting such as such as plank Thing.The Operation switch is pressed, the bit is controlled.It is also equipped with driving the cutter sweep running on the saw frame 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.The abrasive disc may be selected to install, and for example, if punching needs aperture larger, just install the abrasive disc, multiple abrasive discs Rotate, it is also rotatable to get wide-aperture hole.Or go to contact article to be processed with the lateral surface of the abrasive disc, edging is reached, The effect of smooth incisions.

The circulator itself can be rotated, so as to finely tune the operating angle of the cutter.

The reinforcing sleeve can arrange length depending on concrete condition, because the cost and technique of reinforcing sleeve are more common than other Part is expensive, and general recommendations manufacturer is positioned only at the part that the hand of user easily holds.Middle described main internal layer is hard material, Certain support strength is provided.And user is when holding, hand is the outermost adsorption layer of contact.Hand perspiration can pass through water imbibition Material is siphoned away by the adsorption layer.When carrying out pushing away saw, hand can be held user, and easy fatigue is held for a long time, also hold Easily abrade palm.In the present case, the pressure of user is transmitted by the elastic layer, and the elastic layer is elastomeric material, absorbs one Part grip.Bigger grip, by the bolster the main internal layer is passed to.The two sides of the bolster respectively with it is described Main internal layer and the elastic layer are contradicted, and middle part offers the indent deformation groove, and the indent deformation groove is to intermediate recess.Receive During power, the indent deformation groove can have slight deformation to centre, and this partial pressure is buffered with deformation, so as to reduce human body palm Partial sense of discomfort.

Used as the preferred of the present invention, the rotating seat is provided with the limited post for fixing the extending column rotational angle, The limited post can be inserted into the extending column.

Used as the preferred of the present invention, also including servicing unit, the servicing unit is located on the saw frame, comprising cleaning pipe With for spraying the flowline of lubricating oil.

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

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

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

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

Used as the preferred of the present invention, the crack piece is three.

Used as the preferred of the present invention, outer on the crack piece to be convexly equipped with evagination arc rib, the outer convex arc rib is used for and finger Contradict.

The outer convex arc rib is outwardly, and after user holds, this part is contradicted with the finger pulp loss inner side for bending, Laminating is soft, and finger stability is higher.

As the preferred of the present invention, link slot is offered on the saw frame, the saw blade is arranged in the link slot.

The saw blade be arranged on the link slot in, the difference that user can be as requested to saw blade carry out dismounting and more Change, it is convenient and swift.

Used as the preferred of the present invention, the saw blade includes insert plate and sawtooth, and the insert plate is embedded to be arranged on the company In access slot.

Used as the preferred of the present invention, the insert plate is provided with multiple locking pieces, and the locking piece is included by elastomeric material Made by bullet seat and the button column that is located on the bullet seat, have the location hole coordinated with the button column on the link slot.

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

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

Used as the preferred of the present invention, the jig saw sawtooth rough sawn sawtooth is closer to the lever.

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

In sum, the present invention has the advantages that：

1st, the lever adopts particular design, reduces user's physical demands.

2nd, main internal layer provides enough support strengths, and elastic layer provides certain elastic force, link fatigue to palm.

3rd, adsorption layer can absorb the prolonged hand perspiration of user, anti-skidding.

4th, bolster absorbs a part of grip by self-deformation.

5th, the cutter can treat processing object and carry out drilling operation.

6th, the abrasive disc is detachably installed, and user can carry out large-diameter borehole or edging using the abrasive disc.

7th, the flowline and the cleaning pipe can treat respectively processing object surface be lubricated oil sprinkling and with water or Gas is cleaned.

8th, the lever adopts particular design, reduces user's physical demands.

9th, the steady back piece and the crack piece further increase the stability with hand hand.

10th, the saw blade and saw frame are detachably connected.

11st, the sawtooth includes two kinds of sawtooth of rough sawn and jig saw, and, closer to user's hand, refinement is more just for jig saw It is prompt.

12nd, the locking piece can strengthen the stationarity of the saw blade, be difficult displacement.

Description of the drawings

Fig. 1 is the schematic diagram of embodiment 1；

Fig. 2 is that Fig. 1 hides cutter sweep and the schematic diagram of another angle；

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 side sectional view of reinforcing sleeve；

Fig. 8 is the schematic diagram of elastic layer and adsorption layer.

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, 10, reinforcing sleeve, 101, main internal layer, 102, elastic layer, 1021, rub Wipe ball, 103, adsorption layer, 104, bolster, 1041, indent deformation groove.

Specific embodiment

The present invention is described in further detail below in conjunction with accompanying drawing.

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 as needed the modification without creative contribution after this specification is read to the present embodiment, but as long as at this All protected by Patent Law in the right of invention.

Embodiment 1, such as Fig. 1 --- shown in Fig. 5, a kind of durable highly efficient handsaw, comprising saw frame 1, the saw on saw frame 1 Bar 2 and the lever 3 being connected with saw frame 1, lever 3 connects comprising the connecting portion 31 and connecting portion 31 being connected with saw frame 1, into curve, And the back of the hand contact part 32 for contradicting with operator's the back of the hand and the upper stopper 33 that is connected with the back of the hand contact part 32, upper stopper 33 presses Gradually incline upward away from the direction of the back of the hand contact part 32；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 be provided with for into gap between finger so as to increase the crack piece 36 of finger stability.

Saw blade 2 is arranged on saw frame 1, for cutting object.The hand-held lever 3 of user is operated, connecting portion 31 and saw blade 2 Connection, 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 Four fingers of user are then clasped, increases stability.

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

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

User's the back of the hand is close in 341 parts of the main back of the body, wraps up the hand that wing 342 then wraps user from both sides, further increases hand The stress of back portion is consolidated.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, and comfort is increased again With degree of being close to.

The solid bar 35 of the back of the body is provided with the rib block 351 being made up of elastomeric material and for rubbing with the back of the hand.Crack piece 36 is three. Outer on crack piece 36 to be convexly equipped with evagination arc rib 361, outer convex arc rib is used to be contradicted with finger.Outer convex arc rib 361 is outwardly, user After holding, this part is contradicted with the finger pulp loss inner side for bending, and is fitted soft, and 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, is used Family can be as requested difference saw blade is carry out demolition and replacement, it is convenient and swift.Saw blade 2 includes insert plate 21 and sawtooth 23, Insert plate 21 is embedded to be arranged in link slot 11.Insert plate 21 is provided with multiple locking pieces 24, and locking piece 24 is included by elastic material Bullet seat 241 made by material and the button column 242 being located on bullet seat 241, there is the location hole coordinated with button column 242 on link slot 11.

Insert plate 21 is installed in link slot 11, and locking piece 24 just carries out maintenance to the position of the relative saw frame 1 of saw blade 2, detains 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 saw is pushed away for a long time, it is to avoid reduce operating efficiency.

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

The part of rough sawn sawtooth 231 is adapted to needs and is cut energetically, and the situation of section, 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, i.e., 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 Device 4 is cut comprising the rotating seat 41 being rotatably connected on saw frame 1, the extending column 42 being hinged on rotating seat 41 and extension is connected to The cutter 43 of the end of post 42；Cutter 43 includes drill bit 431 and multiple abrasive discs 432 being detachably connected on extending column 42, Drill bit 431 is located in the middle of multiple diaphragms 432, promising extending column 42 is opened up on rotating seat 41 and rotates the appearance post groove 411 for providing space.

Extending column 42 can be rotated in post groove 411 is held, and when only pushing away saw action, extending column 42 is dug, it is to avoid be sent out It is raw to interfere.When needing drilling, user turns down extending column 42 so that cutter 43 is near cut substrate such as such as planks.Press Operation switch 7, control drill bit 431 rotates.It is also equipped with driving the driving means of the running of cutter sweep 4, such as pony on saw frame 1 Up to and connection 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, and multiple abrasive discs 432 are rotated, also rotatable to get 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 itself can be rotated, so as to finely tune the operating angle of cutter 43.

Rotating seat 41 is provided with for the limited post 5 of the rotational angle of securing elongated post 42, 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, comprising cleaning pipe 61 and for spraying going out for 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：Lever 3 includes the reinforcing sleeve 10 for holding for user, and reinforcing sleeve 10 is from inside to outside Comprising the main internal layer 101, the elastic layer 102 by software supporting substances made by hardware material and it is located at outside elastic layer 102 successively Adsorption layer 103 by made by absorbent material；The bolster for compensator or trimmer pressure is provided between main internal layer 101 and elastic layer 102 104, bolster 104 is multiple, circularizes setting, and the middle part of bolster 104 is provided with the indent deformation groove caved inward in circular arc 1041, elastic layer 102 is provided with multiple friction balls 1021 towards the one side of adsorption layer 103.

Reinforcing sleeve 10 can arrange length depending on concrete condition, because the cost and technique of reinforcing sleeve 10 are more common than other Part is expensive, and general recommendations manufacturer is positioned only at the part that the hand of user easily holds.Middle main internal layer 101 is hard material, Certain support strength is provided.And user is when holding, hand is the outermost adsorption layer 103 of contact.Hand perspiration can pass through water imbibition The adsorbed layer 103 of material is siphoned away.When carrying out pushing away saw, hand can be held user, easy fatigue be held for a long time, also easily Scratch palm.In the present case, the pressure of user is transmitted by elastic layer 102, and elastic layer 102 is elastomeric material, absorbs a part Grip.Bigger grip, by bolster 104 main internal layer 101 is passed to.The two sides of bolster 104 respectively with main internal layer 101 and Elastic layer 102 is contradicted, and middle part offers indent deformation groove 1041, and indent deformation groove 1041 is to intermediate recess.During stress, indent Deformation groove 1041 can have slight deformation to centre, this partial pressure be buffered with deformation, so as to reduce human body palm portion not Suitable sense.

Claims

1. a kind of durable highly efficient handsaw, comprising saw frame（1）, installed in saw frame（1）On saw blade（2）And with the saw frame（1）Even The lever for connecing（3）, it is characterised in that：The lever（3）Comprising with saw frame（1）The connecting portion of connection（31）With the connecting portion （31）Connection, into curve, and the back of the hand contact part for contradicting with operator's the back of the hand（32）And with the back of the hand contact part（32） The upper stopper of connection（33）, the upper stopper（33）By away from the back of the hand contact part（32）Direction gradually inclines 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）, the upper stopper（33）It is provided with for entering to start with Gap is so as to increasing the crack piece of finger stability between finger（36）;The saw frame（1）It is provided with cutter sweep（4）With for controlling The cutter sweep（4）Operation switch（7）；The cutter sweep（4）Comprising being rotatably connected on the saw frame（1）On rotation Seat（41）, be hinged on the rotating seat（41）On extending column（42）Be connected to the extending column（42）The cutter of end （43）；The cutter（43）Comprising drill bit（431）Extending column is detachably connected on multiple（42）On abrasive disc（432）, institute State drill bit（431）Positioned at multiple diaphragms（432）Centre, the rotating seat（41）On open up the promising extending column（42）Turn The dynamic appearance post groove that space is provided（411）;The lever（3）Comprising the reinforcing sleeve for holding for user（10）, the reinforcing sleeve （10）From inside to outside successively comprising the main internal layer made by hardware material（101）, by the elastic layer of software supporting substances（102）With It is located at the elastic layer（102）The outer adsorption layer by made by absorbent material（103）；The main internal layer（101）With the elastic layer （102）Between be provided with bolster for compensator or trimmer pressure（104）, the bolster（104）For multiple, setting is circularized, it is described Bolster（104）Middle part is provided with the indent deformation groove caved inward in circular arc（1041）, the elastic layer（102）Towards described Adsorption layer（103）One side be provided with multiple friction balls（1021）.

2. a kind of durable highly efficient handsaw according to claim 1, it is characterised in that：The rotating seat（41）Be provided with for The fixation extending column（42）The limited post of rotational angle（5）, the limited post（5）Can be inserted into the extending column（42）.

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

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

5. a kind of durable highly efficient handsaw according to claim 1, it is characterised in that：The crack piece（36）For three, institute State crack piece（36）Evagination arc rib is convexly equipped with outside upper（361）, the outer convex arc rib be used for and finger contradict.

6. a kind of durable highly efficient handsaw according to claim 1, it is characterised in that：The saw frame（1）On offer connection Groove（11）, the saw blade（2）Installed in the link slot（11）In.

7. a kind of durable highly efficient handsaw according to claim 6, it is characterised in that：The saw blade（2）Comprising insert plate （21）And sawtooth（23）, the insert plate（21）It is embedded to be arranged on the link slot（11）In.

8. a kind of durable highly efficient handsaw according to claim 7, it is characterised in that：The insert plate（21）It is provided with multiple Locking piece（24）, the locking piece（24）Comprising the bullet seat by made by elastomeric material（241）Be located at the bullet seat（241）On Button column（242）, the link slot（11）On have and the button column（242）The location hole of cooperation.

9. a kind of durable highly efficient handsaw according to claim 8, it is characterised in that：The saw blade（2）Comprising embedding with described Enter plate（21）The body of connection（22）, the sawtooth（23）It is connected to the body（22）On, the sawtooth（23）Comprising rough sawn Sawtooth（231）With jig saw sawtooth（232）, the jig saw sawtooth（232）Sawtooth arrangement it is close in the rough sawn sawtooth（231）Saw Tooth row cloth.

10. a kind of durable highly efficient handsaw according to claim 9, it is characterised in that：The jig saw sawtooth（232）It is more described Rough sawn sawtooth（231）Closer to the lever（3）.