WO2015176416A1

WO2015176416A1 - Double-saw-blade reciprocating saw

Info

Publication number: WO2015176416A1
Application number: PCT/CN2014/085856
Authority: WO
Inventors: 黄跃
Original assignee: 宁波黑松工具有限公司
Priority date: 2014-05-22
Filing date: 2014-09-03
Publication date: 2015-11-26
Also published as: CN203843297U

Abstract

A double-saw-blade reciprocating saw, comprising a shell (1), a first reciprocating rod (5) and a second reciprocating rod (6) that are distributed up and down, guide rails (3) fitted in the first reciprocating rod (5) and the second reciprocating rod (6), and a motor (4), a transmission mechanism (7) and a saw blade clamping mechanism (8) that are arranged in the shell (1). The motor (4) is disposed on the upper portion or the lower portion of the transmission mechanism and provides a power source for the transmission mechanism. The transmission mechanism drives the first reciprocating rod (5) and the second reciprocating rod (6) to do linear reciprocating motion. The front end of the first reciprocating rod (5) and the front end of the second reciprocating rod (6) are respectively connected to a first saw blade (18) and a second saw blade (19) that are disposed on the saw blade clamping mechanism. The overall length of the double-saw-blade reciprocating saw is reduced, and therefore the double-saw-blade reciprocating saw is suitable for being operated and used in narrow and small space and also suitable for single-hand operation; and the saw blade clamping mechanism is used for positioning a gap between the two saw blades, and the effect of preventing the two saw blades from deviating is achieved.

Description

Double saw blade reciprocating saw

Technical field

The invention relates to a cutting device, in particular to a double saw blade reciprocating saw.

Background technique

Similar double saw blade reciprocating saws in the prior art have been disclosed by the following patent documents.

The Chinese utility model patent specification CN201220450374.X (promulgated on March 27, 2013) discloses a double saw blade reciprocating saw, which is mainly a motor in a double saw blade reciprocating saw capable of simultaneously dragging two eccentric wheels and driving two The reciprocating rods make a symmetrical reciprocating motion, so that the two saw blades always move in opposite directions, so that the double saw blade reciprocating saw can simultaneously bear the opposite force in two directions, so that the double saw blade reciprocating saw can bear the force of the external force almost It is zero without imbalance, so it effectively eliminates the vibration and backlash caused by reciprocating motion, effectively ensuring the operator's comfort and reducing the labor intensity. For people who work for a long time. Played a good protection!

However, the double saw blade reciprocating saw disclosed above is relatively cumbersome because of its long shape, and therefore is not suitable for operation in a small space, and cannot be operated by one hand.

In addition, when the two saw blade reciprocating saws are installed with two saw blades, the gap between the saw blades is ensured by the relative positional accuracy of the reciprocating rod and the collet, and in order to ensure the clearance between the two saw blades, the reciprocating rod and The processing precision of the chuck is very high, and the structure is also extremely complicated, thereby pushing up the cost.

The technical problem to be solved by the present invention is to provide a double saw blade reciprocating saw to overcome the defects of the prior art double saw blade reciprocating saw which is long in shape, unsuitable for small space operation, and unsuitable for one-hand operation.

In order to achieve the above object, the present invention provides a double saw blade reciprocating saw, The first reciprocating rod, the second reciprocating rod, the rails disposed in the first reciprocating rod and the second reciprocating rod, the motor, the transmission mechanism and the saw blade disposed in the casing Clamping mechanism The motor is disposed at an upper portion or a lower portion of the transmission mechanism and provides a power source for the transmission mechanism, and the transmission mechanism drives the first reciprocating rod and the second reciprocating rod The front end of the first reciprocating rod and the second reciprocating rod are respectively connected to the first saw blade and the second saw blade provided on the saw blade clamping mechanism.

Wherein the transmission mechanism comprises An upper bracket, an upper gear, an upper eccentric, a lower gear, a lower eccentric, an intermediate gear, a lower bracket; the upper bracket is provided with the upper gear, and the upper gear is provided with the upper eccentric, the lower bracket The lower gear is provided with the lower eccentric, the upper eccentric and the lower eccentric are oppositely disposed, the motor is vertically disposed on the upper bracket and transmitted through an output gear The upper gear, the upper gear drives the intermediate gear, the intermediate gear drives the lower gear; the first reciprocating rod a reciprocating ring is located in the upper eccentric, the upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, and the reciprocating ring of the second reciprocating rod is located In the lower eccentric, the lower eccentric wheel drives the second reciprocating rod to perform linear reciprocating motion.

among them, The transmission mechanism includes a bracket disposed at an oblique angle, a main shaft disposed on the bracket, a bevel gear disposed on the main shaft, and a double eccentric disposed on the bevel gear, wherein the double eccentric includes Relative to the pair of spindles The upper eccentric wheel and the lower eccentric wheel are respectively fixed, and the upper eccentric wheel and the lower eccentric wheel are fixed to each other, and the upper eccentric wheel is provided with a fixing hole, and the fixing hole is provided with a pin shaft, a pin is disposed on the bevel gear; the motor is obliquely disposed on the bracket and drives the bevel gear through an output gear, and the double eccentric rotates synchronously with the bevel gear, the first reciprocating rod Reciprocating ring In the upper eccentric, the upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, the reciprocating ring of the second reciprocating rod is located in the lower eccentric, and the lower eccentric drives the second reciprocating wheel The rod is linearly reciprocated.

Wherein, the reciprocating ring is elliptical or inline.

Wherein a front end of the first reciprocating rod or the second reciprocating rod is provided with a hook, the hook opening on the first reciprocating rod is blocked by the side wall on the second reciprocating rod, and the second reciprocating rod is bent The hook opening is blocked by the side wall on the first reciprocating rod.

among them, A rear end of the first saw blade or the second saw blade is provided with a protrusion extending in the hook, and a front end of the first saw blade or the second saw blade is provided with a guiding groove.

among them, The saw blade clamping mechanism includes a rear clamping fence mechanism, a front clamping fence mechanism, and a blade back; the thickness of the blade back is less than, equal to, or slightly larger than the thickness of the first saw blade and the second saw blade. The rear clamping fence mechanism is disposed at a rear portion of the blade back, and the front clamping fence mechanism is disposed at a front portion of the blade back.

among them, The rear clamping slat mechanism includes a first clamping elastic piece, a second clamping elastic piece, and a thread; the first clamping elastic piece and the second clamping elastic piece are clamped to the blade back by the thread The lower end of the front end of the first clamping elastic piece or the second clamping elastic piece is provided with an elongated elastic plate for clamping the first saw blade and the second saw blade.

The first clamping elastic piece or the second clamping elastic piece is provided with an opening, and the two sides of the blade are provided with protrusions, and the protrusions are matched in the opening .

Wherein, the thread comprises a screw and a wing nut fitted on the screw.

among them, The front clamping slat mechanism includes a third clamping elastic piece and a fourth clamping elastic piece; the third clamping elastic piece is provided with a first elastic piece having a concave and convex shape, and the fourth clamping elastic piece is provided with the inner piece a second elastic piece that is convex and convex, the first elastic piece and the second elastic piece are pressed against each other and placed in the guiding groove.

Wherein, the saw blade clamping mechanism further includes a stopper, the stopper is disposed at a lower portion of the front end of the casing and symmetrically disposed with the blade back .

Compared with the prior art, the invention has the beneficial effects of not only shortening the outer length of the double saw blade reciprocating saw, Moreover, the reciprocating rod can be supported back and forth, effectively reducing the wear damage of the high-speed sliding to the reciprocating rod and the sliding bearing, and is suitable for both small-space operation and one-hand operation; and the present invention uses a saw blade clamping mechanism. To locate the mutual gap between the two saw blades, the two sides of the saw blade are respectively stopped by the elastic pieces, thereby achieving the effect of preventing the splitting thereof, and by the above measures, the large guide rails, the aluminum parts and the like are eliminated, so that the double saw blades reciprocate. Sawed The weight is significantly reduced.

1 is a schematic view showing the structure of a double saw blade reciprocating saw of the present invention (first embodiment) for removing a first casing;

2 is a schematic view showing the structure of the double saw blade reciprocating saw of the present invention (the first embodiment) for removing the second casing;

Figure 3 is a first exploded perspective view of the casing of the first embodiment of the present invention;

Figure 4 is a second exploded perspective view of the casing of the first embodiment of the present invention;

Figure 5 is a first structural view of the double saw blade reciprocating saw of the present invention (the first embodiment) for removing the casing;

Figure 6 is a second structural schematic view of the double saw blade reciprocating saw (the first embodiment) of the present invention for removing the casing;

Figure 7 is a schematic view showing the first exploded structure of the double saw blade reciprocating saw (the first embodiment) for removing the casing;

Figure 8 is a schematic view showing a second exploded structure of the double saw blade reciprocating saw (the first embodiment) of the present invention;

Figure 9 is a schematic view showing a third exploded structure of the double saw blade reciprocating saw (the first embodiment) of the present invention;

Figure 10 is a partial structural view of the double saw blade reciprocating saw of the present invention (second embodiment) for removing the first casing;

Figure 11 is a schematic exploded view of the partial structure of Figure 10.

The specific embodiments of the present invention are further described in detail below with reference to the drawings and embodiments. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Embodiment 1

A double saw blade reciprocating saw of the present invention, as shown in Figures 1 to 9, includes a plastic housing 1 including a first housing 2.1 And the second casing 2.2, the rear portion 2.3 of the casing 1 is set as a hand-held portion 2.4 and a positioning bobbin 2 for the cable to be moved out, and a switch button 3 for the user to turn on the power. a first reciprocating rod 5 and a second reciprocating rod 6 disposed in a vertically distributed manner, and a guide rail 33 sleeved in the first reciprocating rod and the second reciprocating rod. Preferably, the guide rail of the embodiment is set to two, respectively Front rail 34 The rear rails 35, the front rails and the rear rails respectively sleeve the first reciprocating rod and the second reciprocating rod. a motor 4 and a transmission mechanism 7 disposed in the casing, passing through the first pillar 02 and the second pillar 03 a blade clamping mechanism 8 disposed at the front end 2.5 of the casing 1 and a shielding cover 001 disposed at the front end of the casing, the first pillar and the second pillar passing through the first supporting plate 04 and the second supporting plate 05 Support. The motor 4 is disposed at an upper portion or a lower portion of the transmission mechanism 7 and provides a power source for the transmission mechanism, and the transmission mechanism 7 drives the first reciprocating rod 5 and the second reciprocating rod 6 The first reciprocating rod 5 and the front end 28 of the second reciprocating rod 6 are respectively connected to the first saw blade 17 and the second saw blade 19 provided on the saw blade holding mechanism 8. It should be noted, The first reciprocating rod 5 and the second reciprocating rod 6 of the present invention reciprocate in opposite directions, and the materials of the first reciprocating rod and the second reciprocating rod are stamped by a plate, the molding is simple, the shape of the part is simple, and the shape can be effectively reduced. weight.

The transmission mechanism 7 includes an upper bracket 9, an upper gear 10, an upper eccentric 11, a lower gear 12, and a lower eccentric 13 The intermediate gear 14 and the lower bracket 01; the upper bracket 9 is provided with the upper gear 10 at the bottom, and the upper gear bottom 10 is provided with the upper eccentric 11 and the lower bracket 01 The lower gear 12 is disposed at an upper portion, and the lower eccentric 13 is disposed at an upper portion of the lower gear. The upper eccentric 11 and the lower eccentric 13 are disposed opposite to each other, and the motor 4 is vertically disposed on the upper eccentric 13 support 9 and passing the upper gear 10 through the upper bracket through the output gear 17, the vertical arrangement of the motor 4 not only greatly reduces the length of the double saw blade reciprocating saw, but also makes the first reciprocating rod 5 and the second reciprocating rod 6 capable of front and rear support, effectively reducing high-speed sliding wear damage to the sliding bearing 4.1 on the first reciprocating rod 5, the second reciprocating rod 6 and the motor 4; the upper gear 10 drives the intermediate gear 14 , the intermediate gear is connected between the upper bracket 9 and the lower bracket 01, the intermediate gear drives the lower gear; the movement of the upper gear 10 can drive the upper eccentric 11 to rotate, the first reciprocating rod 5 The elliptical reciprocating ring 15 is located in the upper eccentric (of course, the reciprocating ring in this embodiment may also be provided as a reciprocating ring such as a shape of a shape) The upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, the lower gear 12 moves to drive the lower eccentric 13 to rotate, and the elliptical reciprocating ring 16 of the second reciprocating rod 6 is located at the lower eccentric 13 (Of course, the reciprocating ring in this embodiment may also be provided as a reciprocating ring of a shape such as a straight shape), and the lower eccentric 11 drives the second reciprocating rod 6 to linearly reciprocate.

The front end 28 of the first reciprocating rod 5 and the second reciprocating rod 6 are provided with a hook 20, 21 The hook 20 opening 22 on the first reciprocating rod is blocked by the side wall 23 on the second reciprocating rod 6, and the hook 21 opening 25 on the second reciprocating rod 6 is reciprocated by the first reciprocating rod Rod 5 The upper side wall 26 is blocked. The rear end 27 of the first saw blade 18 and the second saw blade 19 are respectively provided with a protrusion 29, 30 extending in the hook 20, 21, the first saw blade 18 or the front end 31 of the second saw blade 19 is provided with a guide groove 32.

The saw blade clamping mechanism 8 includes a stopper 36, a rear clamping fence mechanism 37, a front clamping fence mechanism 38, and is fixed to the housing 1 The back of the front end of the blade 39; the rear end of the blade back is provided with a strip-shaped circular hole 06 matching the second pillar 05 for further fixed positioning, the thickness of the blade back is smaller than, equal to or slightly larger than the first saw blade 18 And the added thickness of the second saw blade 19. It should be noted that there is a thickness of the blade back slightly larger than the added thickness of the first saw blade 18 and the second saw blade 19 because the first saw blade 18 And the second saw blade 19 may have left and right misaligned teeth when the teeth are toothed. A stopper 36 is disposed at a lower portion of the front end of the casing 1 and disposed symmetrically with the blade back 39, and the stopper is mainly used for the first saw blade 18 Supported by the second saw blade 19. The rear clamping fence mechanism 37 is disposed at the rear portion 42 of the blade back 39, and the front clamping fence mechanism 38 is disposed at the front of the blade back 39. . Since the thickness of the blade back is used to position the mutual gap between the first saw blade and the second saw blade, and the sides 34, 45 of the first saw blade 18 and the second saw blade 19 are used to sandwich the fence mechanism 37 The front clamping fence mechanism 38 is separately blocked to prevent it from being split, ensuring that the gap is within a reasonable range. The blade back and rear clamping fence mechanism and the front clamping fence mechanism described in this embodiment are actually limited. The three degrees of freedom of the first saw blade and the second saw blade, that is, the back of the blade 39 limits the upward degree of freedom of the first saw blade and the second saw blade, the rear clamp fence mechanism 37, and the front clamp fence mechanism 38 Limiting the degrees of freedom of the first and second saw blades 44, 45, therefore, the first saw blade and the second saw blade can only be cut in the front and rear direction, and the first saw blade and the second saw are removed downward. The direction of the piece, ie when disassembling, because of the stop 36 is hinged to the housing 1, so as long as the lower cover 48 is opened first, then the stopper 36 is moved toward the notch 49 of the housing 1, because the first housing is provided with a stopper 36 for dialing in. Notch 49 Therefore, when the stopper is toggled, the slot 49 can be dialed so that the first saw blade and the second saw blade can be detached downward, and when the force of the toggle on the stopper 36 disappears, due to the stopper 36 and second housing 2.2 A return spring 50 is provided between them so that the stop can be easily reset without force. At the time of cutting, the first saw blade and the second saw blade are biased upward, so the downward degree of freedom has substantially no effect on them; The saw blade clamping mechanism 8 also serves as a support for the two first saw blades and the second saw blade to be on a horizontal line to prevent the saw teeth from being misaligned.

It should be further noted that the rear clamping fence mechanism 37 and the front clamping fence mechanism 38 of the present invention are not in the blade back 39. The design is continuous clamping because of the double saw blade reciprocating saw of the present invention. It is not only necessary to cut soft materials such as wood, but also to cut hard materials such as steel pipes. The saw blades for cutting metal steel pipes are generally dense and cannot make large left and right wrong teeth, so the thickness of the kerf and the actual saw blade. The difference is not large, so the effective cutting area cannot have an extra thickness. And this segmented The clamping fence mechanism is designed to set the rear clamping fence mechanism 37 behind the knife back 39 and the front clamping fence mechanism 38 in front of the blade back 39, i.e., the first saw blade 18 and the second saw blade. 19 Interlaced area, which is the area that is not used for cutting. The front clamping sill mechanism 38 includes a third clamping elastic piece 51 and a fourth clamping elastic piece 52; the third clamping elastic piece 51 The first elastic piece 53 is provided with a concave and convex portion, and the fourth elastic piece 52 is provided with a second elastic piece 54 which is internally convex and convex, and the first elastic piece 53 and the second elastic piece 54 are pressed against each other and placed in the Guide groove 32 Inside. In order to prevent the first saw blade and the second saw blade from falling during the no-load operation, the first saw blade and the second saw blade are provided with a guiding groove (or a strip-shaped groove) in front of the first elastic piece and the second elastic piece. Passing through the guiding slot 32 The first saw blade 18 and the second saw blade 19 are hooked to prevent them from falling. When the load bearing is actually cut, the first elastic piece and the second elastic piece do not bear the weight, but the first saw blade and the second saw blade are restricted by the stopper 36. Downward trend. The rear clamping fence mechanism 37 in this embodiment includes a first clamping elastic piece 55, a second clamping elastic piece 56, and a thread 57. The first clamping elastic piece and the second clamping elastic piece are clamped to the blade back 39 by the screw, and the first clamping elastic piece 55 or the second clamping elastic piece 56 The lower end of the front end is provided with an elongated elastic plate 58 for holding the first saw blade and the second saw blade. An opening 59 is defined in the first clamping elastic piece or the second clamping elastic piece, and the protrusions 60 are provided on both sides of the blade back 1 60 fits into the opening 59. The thread 57 includes a screw 61 and a wing nut 62 that fits over the screw.

Embodiment 2

As shown in FIGS. 10 and 11, the second embodiment is basically the same as the first embodiment, and the difference is the transmission mechanism in this embodiment. 7 includes a bracket 100 disposed at an oblique angle, a spindle 101 disposed on the bracket, a bevel gear 102 disposed on the spindle, and a double eccentric 103 disposed on the bevel gear, The double eccentric wheel 103 includes an upper eccentric wheel 104 and a lower eccentric wheel 105 symmetrically disposed opposite to the main shaft. The bevel gear is provided with a shaft hole 111, and the upper eccentric wheel is opened. There is a first eccentric hole 112, and a second eccentric hole 113 is defined in the lower eccentric wheel, and the main shaft sequentially passes through the shaft hole, the first eccentric hole and the second eccentric hole. The upper eccentric wheel and the lower eccentric wheel The upper eccentric wheel 104 is fixed to each other, and a fixing hole 106 is formed in the fixing eccentric hole, and the fixing hole is provided with a pin 107 ( The fixing hole 106 of the embodiment can also be replaced by a keyhole, and the pin shaft 107 can also be replaced by a key. The pin shaft is disposed on the bevel gear 102, so that the rotation of the bevel gear can drive the double eccentricity. The wheel turns. The motor 4 is obliquely disposed on the bracket 100 at an angle of 45 ° and drives the bevel gear 102 through the output gear 17, the double eccentric wheel 103 and the bevel gear 102. Synchronous rotation, the elliptical reciprocating ring or the inline reciprocating ring 15 of the first reciprocating rod 5 is located at the upper eccentric 104 The upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, and the elliptical reciprocating ring of the second reciprocating rod 6 or the in-line reciprocating ring 16 is disposed on the lower eccentric 105 The lower eccentric wheel drives the second reciprocating rod to perform a linear reciprocating motion. Since the upper eccentric 104 and the lower eccentric 105 are fixed, and the upper eccentric passes through the pin 107 It is coupled to the bevel gear, whereby the upper eccentric and the lower eccentric are eccentrically rotatable about the main shaft 101. Since the double eccentric 103 cooperates with the structures of the first reciprocating rod and the second reciprocating rod, the double eccentric 103 The eccentric rotation drives the first reciprocating rod 5 and the second reciprocating rod 6 A linear motion that reciprocates back and forth. Also, since the upper eccentric and the lower eccentric are symmetrically disposed with respect to the main axis, the first reciprocating rod and the second reciprocating rod are caused to reciprocate in opposite directions. Through the two sets of reciprocating rod structures symmetrically arranged, the balance of the reciprocating saw is maintained, so that the reaction forces of the workpiece on the reciprocating saw in the reciprocating motion cancel each other out, eliminating the impact vibration, thereby facilitating the use of the operator and improving the cutting efficiency. .

In the same manner as the above structural adjustment, the housing 108 of the second embodiment is adapted. An adaptive change is also made following the above structure, that is, the housing portion 109 of the mounting motor is also tilted at an angle of 45°, and the hand-held portion 110 is also provided with an oblique angle setting.

The invention not only shortens the outer length of the double saw blade reciprocating saw, Moreover, the reciprocating rod can be supported back and forth, effectively reducing the wear damage of the high-speed sliding to the reciprocating rod and the sliding bearing, and is suitable for both small-space operation and one-hand operation; and the present invention uses a tool holder to utilize its thickness Positioning the mutual gap between the two saw blades, the two sides of the saw blade are respectively stopped by the spring pieces, thereby achieving the effect of preventing the splitting thereof, and by the above measures, the large guide rails, aluminum parts and the like are eliminated. The weight of the double saw blade reciprocating saw is significantly reduced.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and retouchings without departing from the technical principles of the present invention. It should also be considered as the scope of protection of the present invention.

Claims

A double saw blade reciprocating saw, comprising: a housing, a first reciprocating rod and a second reciprocating rod arranged in a vertical arrangement, and a guide rail sleeved in the first reciprocating rod and the second reciprocating rod, a motor, a transmission mechanism, and a saw blade clamping mechanism in the housing; the motor is disposed at an upper portion or a lower portion of the transmission mechanism and provides a power source for the transmission mechanism, and the transmission mechanism drives the first reciprocating rod, The second reciprocating rod is linearly reciprocated, and the front ends of the first reciprocating rod and the second reciprocating rod are respectively connected to the first saw blade and the second saw blade provided on the saw blade clamping mechanism.
The double saw blade reciprocating saw according to claim 1, wherein the transmission mechanism comprises an upper bracket, an upper gear, an upper eccentric, a lower gear, a lower eccentric, an intermediate gear, and a lower bracket; There is the upper gear, the upper gear is provided with the upper eccentric wheel, the lower bracket is provided with the lower gear, and the lower gear is provided with the lower eccentric, the upper eccentric and the lower The eccentric wheel is disposed oppositely to the left and right, the motor is vertically disposed on the upper bracket and drives the upper gear through an output gear, the upper gear drives the intermediate gear, and the intermediate gear drives the lower gear; a reciprocating ring of a reciprocating rod is disposed in the upper eccentric, the upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, and the reciprocating ring of the second reciprocating rod is located in the lower eccentric, the lower eccentric The wheel drives the second reciprocating rod to linearly reciprocate.
The double saw blade reciprocating saw according to claim 1, wherein the transmission mechanism comprises a bracket disposed at an oblique angle, a main shaft disposed on the bracket, a bevel gear disposed on the main shaft, and a setting a double eccentric on the bevel gear; the double eccentric includes an upper eccentric and a lower eccentric disposed symmetrically with respect to the main shaft, the upper eccentric and the lower eccentric being fixed to each other, the upper eccentric a fixing hole is disposed, a pin shaft is disposed in the fixing hole, the pin shaft is disposed on the bevel gear, and the motor is obliquely disposed on the bracket and drives the bevel gear through an output gear, the double The eccentric wheel rotates synchronously with the bevel gear, and the reciprocating ring of the first reciprocating rod is located in the upper eccentric, the upper eccentric wheel drives the first reciprocating rod to linearly reciprocate, and the second reciprocating rod The reciprocating ring is located in the lower eccentric, and the lower eccentric drives the second reciprocating rod to linearly reciprocate.
A double saw blade reciprocating saw according to claim 2 or 3, wherein the reciprocating ring is elliptical or inline.
The double saw blade reciprocating saw according to claim 4, wherein a front end of the first reciprocating rod or the second reciprocating rod is provided with a hook, and the hook opening on the first reciprocating rod is The side wall on the reciprocating rod is blocked, and the hook opening on the second reciprocating rod is blocked by the side wall on the first reciprocating rod.
The double saw blade reciprocating saw according to claim 5, wherein a rear end of the first saw blade or the second saw blade is provided with a protrusion extending in the hook, the first saw blade Or a front end of the second saw blade is provided with a guiding groove.
The double saw blade reciprocating saw according to claim 6, wherein the saw blade clamping mechanism comprises a rear clamping fence mechanism, a front clamping fence mechanism, and a blade back; the thickness of the blade back is less than or equal to or Slightly larger than the thickness of the first saw blade and the second saw blade, the rear clamp fence mechanism is disposed at a rear portion of the blade back, and the front clamp fence mechanism is disposed at a front portion of the blade back.
The double saw blade reciprocating saw according to claim 7, wherein the rear clamping fence mechanism comprises a first clamping elastic piece, a second clamping elastic piece, a thread; the first clamping elastic piece and the The second clamping elastic piece is clamped on the blade back by the thread, and the lower end of the front end of the first clamping elastic piece or the second clamping elastic piece is provided with the first saw blade and the second saw blade. The extension of the springboard.
The double saw blade reciprocating saw according to claim 8, wherein the first clamping elastic piece or the second clamping elastic piece is provided with an opening, and the two sides of the blade are provided with protrusions, and the protrusions are matched with In the opening.
A double saw blade reciprocating saw according to claim 8 or 9, wherein the thread comprises a screw and a wing nut fitted to the screw.
The double saw blade reciprocating saw according to claim 7, wherein the front clamping fence mechanism comprises a third clamping elastic piece and a fourth clamping elastic piece; The first elastic piece is provided with a second elastic piece which is internally convex and convex, and the first elastic piece and the second elastic piece are pressed against each other and placed in the guiding groove.
The double saw blade reciprocating saw according to claim 7, wherein the saw blade holding mechanism further comprises a stopper provided at a lower portion of the front end of the casing and disposed symmetrically with the blade back.