CN110405276B

CN110405276B - Dual-purpose saw sword

Info

Publication number: CN110405276B
Application number: CN201910724211.2A
Authority: CN
Inventors: 陈会甫; 闵新林; 陈磊
Original assignee: Ningbo Hanpu Tools Co ltd
Current assignee: Ningbo Hanpu Tools Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2024-02-09
Anticipated expiration: 2039-08-07
Also published as: CN110405276A

Abstract

The invention discloses a dual-purpose saw blade, which comprises a machine body, a chuck arranged on the machine body, a first blade and a second blade, wherein the tail part of the first blade is provided with a positioning hole, the width of the second blade is smaller than that of the first blade, and two sides of the tail part of the second blade are provided with limit convex blocks. The blade with the two different tail structures can be installed.

Description

Dual-purpose saw sword

Technical Field

The invention relates to a cutter structure, in particular to a dual-purpose saw blade.

Background

The saw blade generally comprises a machine body and a blade, the blade is fixedly connected with the machine body through a corresponding chuck, the tail parts of the blades with different purposes are generally different in general shape, the connection mode of the saw blade is different from that of the corresponding chuck, the saw blade is fixedly connected with a positioning pin through a positioning hole in a matched manner, the saw blade is fixedly connected with the positioning pin in a clamped manner, the chuck in the saw blade can only be provided with the blade with the matched connection mode, when the cutting blade with the different tail parts needs to be replaced in the cutting operation, the corresponding saw blade needs to be replaced integrally, and the saw blade is inconvenient to use and carry.

Disclosure of Invention

The invention aims to solve the technical problem of providing a dual-purpose saw blade which can be used for mounting two blades with different tail structures on one chuck and is convenient to replace and carry.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a dual-purpose saw sword, includes the fuselage, sets up chuck, first blade and the second blade on the fuselage, the afterbody of first blade be provided with the locating hole, the width of second blade be less than the width of first blade, the both sides of afterbody of second blade be provided with spacing lug, the chuck include blade holder and gland, the tail end of gland rotate and connect the tail end of blade holder, gland with the blade holder between be provided with the upset actuating mechanism that has elastic return mechanism, upset actuating mechanism be used for under external force with the blade holder with the gland upset open and fold, elastic return mechanism set up the upset actuating mechanism with the blade holder between, when elastic return mechanism be in reset state the gland with the blade holder each other clamp, the gland on be provided with the first mounting bracket that has first mounting groove, first mounting groove be used for holding the afterbody of first blade and the blade holder with the tail end of second mounting bracket with the width of second mounting bracket and the second mounting bracket have the width of second blade holder the bottom the mounting bracket have the locating slot is provided with the locating slot.

The upper portion of blade holder be provided with the second mounting bracket that has the third mounting groove, the second mounting bracket on be provided with circular shaft hole, upset actuating mechanism include fixed connection dial knob and drive shaft, dial knob be located the third mounting groove in, the drive shaft rotate and set up circular shaft hole on, the week side surface of drive shaft include the central angle and be greater than or equal to 180 arc surface and mild face, the arc surface with the shape matching in circular shaft hole, elastic reset mechanism be the torsional spring of setting up dial knob with the second mounting bracket between the aperture of circular shaft hole on be provided with minimum width and be greater than the fixed orifices of circular shaft hole, the upper portion of fixed orifices form with the mild face matching of drive shaft, the tip of drive shaft pass through in proper order circular shaft hole and the fixed orifices, when the torsional spring be in reset state, the drive shaft face upwards face in the fixed orifices on and the clamp down the smooth face of hole of blade holder when the circular shaft face and the smooth face of hole down the clamp down when the clamp down. When the cutter needs to be replaced, the poking button is poked, the poking button drives the driving shaft to rotate in the circular shaft hole and gradually move downwards, and when the gentle surface of the driving shaft is attached to the positioning surface of the fixing hole, the gland and the cutter holder keep a natural opening state at the moment, and the cutter blade can be taken out for replacement; when the first blade or the second blade is installed in place, the pulling button is gradually loosened to enable the driving shaft to rotate downwards and integrally move upwards under the action of the torsion spring, the gland and the tool apron are clamped with each other until the torsion spring is in a reset state, the first blade or the second blade is connected and fixed, the whole structure is simple, the tool is convenient to replace, the connection to the tool is also firm, and the use safety is improved.

The arc surface of the driving shaft is a semicircular arc surface, and the gentle surface of the driving shaft is a plane. The processing is convenient, the gentle surface of the driving shaft is a plane, the positioning surface of the fixing hole is a plane matched with the flat surface, and the blade is labor-saving when being replaced; because the arc surface of the driving shaft is a semicircular arc surface, the driving shaft always rotates by taking the center of the circular shaft hole as the center when the poking button rotates, and the gland and the tool apron are ensured to be mutually opened, so that the blade is taken out.

The driving shaft transversely passes through the connecting hole, the driving button is fixedly connected with the driving shaft through a fixing pin, and the fixing pin penetrates through the driving button, is arranged in the driving shaft and is perpendicular to the axial lead of the driving shaft. Simple structure, processing is convenient, guarantees to dial button and fixed pin synchronous rotation, and wherein the drive shaft also can adopt other fixed modes and dial button fixed connection, like interference fit, integrated into one piece etc..

The tail end of the gland is rotationally connected with the tail end of the tool apron through a rotating shaft. The tail end of the gland can also be connected with the tail end of the tool apron by adopting other conventional rotation connection modes.

Compared with the prior art, the invention has the advantages that when the blade is required to be taken out, the turnover driving mechanism turns over the blade holder and the gland to be opened by external force, at the moment, the first blade or the second blade is put into the blade holder along the first mounting groove and the positioning hole is sleeved on the positioning column for positioning when the first blade is put in the blade holder, after the first blade is put in place, the turnover mechanism folds the blade holder and the gland together by external force, and finally, when the elastic reset mechanism is in a reset state, the gland and the blade holder are clamped mutually, at the moment, because the width of the second mounting groove is smaller than the width of the tail part of the first blade, the two side structures of the second mounting groove are pressed on the tail part of the first blade, and the first blade is connected and fixed together with the positioning column and the positioning hole; when the second blade is installed, the second blade is placed inwards along the second installation groove, the limiting protruding block is clamped into the limiting groove, the turning mechanism is enabled to fold the tool apron and the gland mutually through external force, finally the gland and the tool apron are clamped mutually when the elastic reset mechanism is in a reset state, and the positioning column is propped against the second blade to fixedly connect the second blade; the blade is very convenient in the process of disassembly and replacement, the function of installing two blades with different tail structures on a saw blade according to the needs is realized, the whole structure is simple, the use is convenient, the connection is stable, the carrying space can be effectively reduced, the blades which are frequently required to be replaced in the same working environment, namely the curve saw blade and the reciprocating saw blade can be installed in practical application, and the machine body can be an electric saw blade machine body or a manual saw blade machine body.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a partial cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic view of the structure of the tool holder and the gland according to the present invention when the tool holder and the gland are opened;

FIG. 4 is a schematic view of the structure of the tool holder and the gland according to the present invention;

fig. 5 is a schematic view of a part of the structure of the present invention.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

Embodiment one: the utility model provides a dual-purpose saw blade, including the fuselage (not shown), the chuck that sets up on the fuselage, first blade 1 and second blade 2, the afterbody of first blade 1 is provided with locating hole 11, the width of second blade 2 is less than the width of first blade 1, the both sides of the afterbody of second blade 2 are provided with spacing lug 21, the chuck includes blade holder 3 and gland 4, the tail end of gland 4 passes through axis of rotation 41 swivelling joint at the tail end of blade holder 3, be provided with the upset actuating mechanism that has elastic reset mechanism between gland 4 and the blade holder 3, the upset actuating mechanism is used for opening and folding blade holder 3 and gland 4 under external force, elastic reset mechanism sets up between upset actuating mechanism and blade holder 3, gland 4 and blade holder 3 clamp each other when elastic reset mechanism is in reset state, be provided with the first mounting bracket 42 that has first mounting groove 421 on the gland 4, the first mounting groove 421 is used for accommodating the tail part of the first blade 1 and the blade holder 3, the bottom of the first mounting groove 421 is provided with a positioning column 43 matched and positioned with the positioning hole 11, the bottom of the blade holder 3 is provided with a second mounting groove 31 used for accommodating the tail part of the second blade 2, the width of the second mounting groove 31 is smaller than that of the tail part of the first blade 1, two sides of the inside of the second mounting groove 31 are provided with limiting grooves 311 matched and limited with the limiting convex blocks 21, the upper part of the blade holder 3 is provided with a second mounting frame 33 with a third mounting groove 32, the second mounting frame 33 is provided with a circular shaft hole 34, the overturning driving mechanism comprises a poking button 51 and a driving shaft 52 which are fixedly connected, the poking button 51 is positioned in the third mounting groove 32, the driving shaft 52 is rotationally arranged on the circular shaft hole 34, the circumferential surface of the driving shaft 52 comprises an arc surface 521 and a flat surface 522 with a central angle larger than 180 degrees, the arc surface 521 is matched with the shape of the circular shaft hole 34, the elastic reset mechanism is a torsion spring 6 arranged between the pulling button 51 and the second mounting frame 33, the first mounting frame 42 is provided with a fixing hole 44 with the minimum width larger than the aperture of the circular shaft hole 34, a positioning surface 441 matched with the gentle surface 522 of the driving shaft 52 is formed at the upper part of the fixing hole 44, the end part of the driving shaft 52 sequentially penetrates through the circular shaft hole 34 and the fixing hole 44, when the torsion spring 6 is in a reset state, the arc surface 521 of the driving shaft 52 is propped up against the positioning surface 441 of the fixing hole 44, the gland 4 is clamped with the tool apron 3, and when the pulling button 51 rotates under the action of external force, the driving shaft 52 slides downwards along the hole wall of the circular shaft hole 34 until the gentle surface 522 of the driving shaft 52 is attached to the positioning surface 441 of the fixing hole 44.

Embodiment two: the rest is the same as the first embodiment except that the arc surface 521 of the driving shaft 52 is a semicircular arc surface with a central angle equal to 180 °, and the gentle surface 522 of the driving shaft 52 is a plane.

Embodiment III: the rest is the same as the first embodiment except that the knob 51 is fixedly connected with the driving shaft 52 through a fixing pin 53, and the fixing pin 53 is penetratingly arranged in the knob 51 and the driving shaft 52 and is perpendicular to the axial line of the driving shaft 52.

Claims

1. The utility model provides a dual-purpose saw blade, includes the fuselage, the chuck that sets up on the fuselage, first blade and second blade, the afterbody of first blade be provided with the locating hole, the width of second blade be less than the width of first blade, the both sides of afterbody of second blade be provided with spacing lug, characterized by the chuck include blade holder and gland, the tail end swivelling joint of gland be in the tail end of blade holder, gland with be provided with the upset actuating mechanism that has elastic return mechanism between blade holder and the blade holder, upset actuating mechanism be used for under external force with blade holder and gland upset open and fold, elastic return mechanism set up in upset actuating mechanism with the blade holder between, when elastic return mechanism be in reset state the gland with the blade holder each other, the gland on be provided with the first mounting bracket that has first mounting groove, first mounting groove be used for holding the afterbody of first blade and the blade holder and the second mounting groove of blade holder the width of first mounting groove and the second blade the both sides of second blade the lug are provided with the locating hole the both sides of second mounting groove, the locating hole is provided with the locating hole is mutually to the end, the second mounting groove is provided with the locating hole is mutually to the lug, the locating hole is provided with the locating hole is mutually to the end of the second blade, the locating hole is provided with the end of the second mounting groove, the end of the second blade, the locating hole is provided with the locating hole mutually to be provided with the locating hole, and the locating hole, the positioning column is propped against the second blade to connect and fix the second blade.

2. The dual-purpose saw blade according to claim 1, wherein the upper portion of the blade holder is provided with a second mounting frame with a third mounting groove, the second mounting frame is provided with a circular shaft hole, the turnover driving mechanism comprises a fixed connection poking button and a driving shaft, the poking button is positioned in the third mounting groove, the driving shaft is rotatably arranged on the circular shaft hole, the peripheral side surface of the driving shaft comprises an arc surface and a gentle surface with a central angle of 180 degrees or more, the arc surface is matched with the shape of the circular shaft hole, the elastic reset mechanism is a torsion spring arranged between the poking button and the second mounting frame, the first mounting frame is provided with a fixing hole with a minimum width of more than the aperture of the circular shaft hole, the upper portion of the fixing hole forms a locating surface matched with the gentle surface of the driving shaft, the end of the driving shaft sequentially penetrates through the circular shaft hole and the fixing hole, when the circular surface is in a reset state, the elastic reset mechanism is a torsion spring arranged between the poking button and the fixing hole, and the fixing hole face of the rotating shaft is in a straight contact with the straight face of the circular shaft hole, and the fixing hole is in a pressing cover.

3. The dual-purpose saw blade as claimed in claim 2, wherein the arc surface of the driving shaft is a semi-arc surface, and the gentle surface of the driving shaft is a plane.

4. The dual-purpose saw blade as defined in claim 2, wherein said knob is fixedly connected to said drive shaft by a fixing pin, said fixing pin penetrating through said knob and said drive shaft and being perpendicular to the axis of said drive shaft.

5. The dual-purpose saw blade according to claim 1, wherein the tail end of the gland is rotatably connected with the tail end of the blade holder through a rotating shaft.