Electric saw free of tool replacement and chain saw tension adjustment

Abstract

The utility model discloses an electric saw free of tool replacement and chain saw tension adjustment, which comprises a driving machine, a sealing cover and a limiting seat, the driving machine is movably connected with a guide plate, the guide plate is provided with two adjusting holes, two knobs are rotatably mounted on the driving machine, the interiors of the knobs are connected with plugs through springs, and the sealing cover is mounted on the side surface of the driving machine. A worm is rotationally connected to the surface of the sealing cover, a lead screw is rotationally installed in the limiting seat, a worm gear meshed with the worm is fixedly connected to the lead screw, a lead screw nut is in transmission connection with the lead screw, and the lead screw nut is in transmission connection with the adjusting hole; the plug moves upwards to be separated from the inserting groove, then the rotary knob is rotated to enable the plug to be separated from the sealing cover, the sealing cover is not blocked any more, the sealing cover is convenient to take down, any tool does not need to be used, and bare-handed disassembly is convenient. The spinning roller drives the worm to rotate, the worm drives the lead screw to rotate through the worm gear, and the lead screw controls the lead screw nut to move front and back. The lead screw nut controls the guide plate to move through the bent rod to tightly support the saw chain, operation is convenient, and adjustment is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric saw technical field, concretely is a kind of electric saw of tool replacement and chain saw tension adjustment exemption. BACKGROUND

[0002] If the chain of electric chain saw is not well fixed during installation and connection, it is likely to cause great failure during use and thus cause personal injury, so necessary chain tension adjustment is needed.

[0003] In the related art, through retrieval, it is found that the scheme of manual tensioning electric chain saw (publication number CN203944923U) can drive the pinion to rotate by rotating the knob, the pinion drives the screw rod to rotate, the screw rod drives the tensioning nail to move forward and backward, the tensioning nail drives the guide plate to move forward and backward to realize the adjustment of saw blade tensioning degree, so as to achieve the purpose of convenient adjustment.

[0004] However, in the above scheme, two nuts need to be twisted to disassemble and assemble the chain, and a wrench is needed to complete the operation. When the electric saw fails during outdoor use, it is difficult to disassemble and repair it manually, and the convenience of use needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of electric saw of tool replacement and chain saw tension adjustment exemption, to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of electric saw of tool replacement and chain saw tension adjustment exemption, including drive machine, the drive machine movably connects with guide plate, the guide plate is equipped with two adjusting holes, the drive machine is rotatably installed with two knobs, the knob is connected with plug inside by spring, rotating knob can make it separate from cover, facilitate to remove cover, in turn facilitate disassembly and assembly saw chain, do not need wrench;

[0007] cover, the cover is installed to drive machine side, and the surface of cover is equipped with the insertion slot corresponding with plug, the surface of cover is rotatably connected with worm, the output wheel of cover shields drive machine, ensure that electric saw is used safely;

[0008] limiting seat, the limiting seat is rotatably installed with lead screw, and the lead screw is fixedly connected with worm wheel meshed with worm, the lead screw is rotatably connected with lead screw nut, lead screw nut is drivingly connected with adjusting hole, rotates worm to control bent bar movement, bent bar drives guide plate to move, so that guide plate tightens saw chain, maintains the tensioning degree of saw chain.

[0009] Further, the surface of drive machine is equipped with reinforcing strip, the guide plate is equipped with reinforcing hole corresponding with reinforcing strip, ensure that guide plate does not swing greatly, the support of saw chain is more stable, improve the stability of saw chain rotation.

[0010] Further, the driving machine surface is provided with a plurality of positioning columns, and the cover is provided with positioning grooves matched with the positioning columns, so that the cover and the driving machine are stably assembled, and the cover is prevented from loosening.

[0011] Further, the driving machine surface is provided with a plurality of positioning columns, and the cover is provided with positioning grooves matched with the positioning columns, so that the cover and the driving machine are stably assembled, and the cover is prevented from loosening.

[0012] Further, the worm end is sleeved with a rotating wheel, and the worm can be rotated by the rotating wheel.

[0013] Compared with the prior art, the driving machine surface is provided with a plurality of positioning columns, and the cover is provided with positioning grooves matched with the positioning columns, so that the cover and the driving machine are stably assembled, and the cover is prevented from loosening.

[0014] (1) The plug is separated from the insertion slot, and the plug is separated from the cover by rotating the knob, so that the cover is not blocked, the cover is conveniently taken down, and no tool is needed for manual disassembly.

[0015] (2) The rotating wheel drives the worm to rotate, the worm drives the lead screw to rotate through the worm wheel, the lead screw controls the lead screw nut to move forward and backward, and the lead screw nut controls the guide plate to move and tighten the saw chain through the bent rod, so that the operation is convenient and the adjustment is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the whole utility model;

[0017] Figure 2 It is a structure schematic view of the guide plate and the driving machine of the utility model;

[0018] Figure 3 It is a structure schematic view of the knob and the plug connection of the utility model;

[0019] Figure 4 It is a structure schematic view of the inside of the cover of the utility model;

[0020] Figure 5 It is a structure schematic view of the connection of the bent rod and the guide plate of the utility model.

[0021] In the drawing: 1, driving machine; 2, insertion slot; 3, cover; 4, knob; 5, worm; 6, guide plate; 7, saw chain; 8, clamping groove; 9, reinforcing strip; 10, reinforcing hole; 11, stabilizing column; 12, adjusting hole; 13, plug; 14, spring; 15, limiting seat; 16, worm wheel; 17, lead screw nut; 18, bent rod; 19, positioning column; 20, positioning groove; 21, lead screw; 22, rotating wheel. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Embodiment:

[0024] Please refer to Figures 1-5 The utility model provides a technical scheme: a tool replacement free and chain saw tension regulation's electric saw, including drive machine 1, drive machine 1 swing joint has the guide plate 6, the guide plate 6 is with two adjusting hole 12, drive machine 1 is rotationally installed with two knobs 4, the knob 4 inside is connected with the plug 13 through spring 14;

[0025] Cover 3, cover 3 is installed to drive machine 1 side, and cover 3 surface is equipped with the insertion slot 2 corresponding with plug 13, spring 14 pushes plug 13 and is clamped into insertion slot 2, ensure that knob 4 will not rotate freely, and spring 14 simultaneously exerts pressure on cover 3, prevent cover 3 from loosening, also facilitate downward cover 3, the surface rotationally connected with the worm 5 of cover 3;

[0026] Limiting seat 15, the lead screw 21 is rotationally installed in limiting seat 15, and the lead screw 21 is fixedly connected with the worm wheel 16 engaged with the worm 5, the lead screw nut 17 is drivingly connected with the adjusting hole 12 on the lead screw 21, the lead screw 21 rotationally controls the lead screw nut 17 to move, and the lead screw nut 17 drives the guide plate 6 to move, to ensure that the guide plate 6 is tightly pressed against the saw chain 7, and the self-locking feature of the worm 5 and the worm wheel 16 can prevent the guide plate 6 from loosening, and the support for the saw chain 7 is more durable and stable.

[0027] In the present embodiment, as shown in Figure 1 The drive machine 1 is drivingly connected with the saw chain 7, the saw chain 7 is installed on the guide plate 6, and the drive machine 1 controls the saw chain 7 to move along the guide plate 6, so that the saw chain 7 operates stably and has a good effect on sawing off the object.

[0028] In the present embodiment, as shown in Figure 2 The surface of the drive machine 1 is provided with a reinforcing strip 9, and the guide plate 6 is provided with a reinforcing hole 10 corresponding to the reinforcing strip 9, the reinforcing strip 9 supports the guide plate 6 through the reinforcing hole 10, improving the stability of the installation of the guide plate 6 and preventing the guide plate 6 from shaking.

[0029] In the present embodiment, as shown in Figure 2 and Figure 4As shown, the driving machine 1 surface is provided with a plurality of positioning column 19, the cover 3 is provided with a matching positioning column 19 positioning groove 20, cover 3 through the positioning groove 20 and positioning column 19 connection, improve the stability of driving machine 1 and cover 3 connection, to ensure that the cover 3 will not loose.

[0030] In this embodiment, as shown in Figure 4 and Figure 5 As shown, the screw nut 17 is fixedly connected with the bent rod 18, the bent rod 18 is inserted into the adjusting hole 12, the bent rod 18 moves synchronously with the screw nut 17, ensuring that the bent rod 18 can smoothly pass through the adjusting hole 12 to control the movement of the guide plate 6.

[0031] In this embodiment, as shown in Figure 2 The surface of the driving machine 1 is provided with a stabilizing column 11, which is inserted into another adjusting hole 12, and the stabilizing column 11 cooperates with the bent rod 18 to support the guide plate 6 stably, ensuring that the guide plate 6 will not loosen after being fixed.

[0032] In this embodiment, as shown in Figure 1 and Figure 2 As shown, the surface of the driving machine 1 is provided with a clamping groove 8, and the upper part of the cover 3 is clamped into the clamping groove 8, which enhances the clamping stability of the cover 3 and the driving machine 1.

[0033] In this embodiment, as shown in Figure 1 As shown, the end of the worm 5 is sleeved with a rotating wheel 22, and the surface of the rotating wheel 22 is provided with anti-skid lines, which will not slip when twisted, and the rotation of the worm 5 is labor-saving.

[0034] Specifically, when using, as shown in Figure 3 The side edge of the plug 13 is provided with a convex edge, which facilitates the upward movement of the plug 13 with the convex edge, so that the plug 13 is separated from the insertion slot 2, and then the knob 4 is rotated to control the plug 13 to be staggered with the cover 3, and then the cover 3 is removed, at this time the guide plate 6 is in a loose state, the guide plate 6 is removed from the reinforcing strip 9 and the stabilizing column 11, and the saw chain 7 is removed, which does not need tools during disassembly and is more convenient.

[0035] When adjusting the tension of the saw chain 7, the rotating wheel 22 drives the worm 5 to rotate, the worm 5 drives the worm gear 16 to rotate, and the screw rod 21 rotates synchronously with the worm gear 16. Since the screw nut 17 is connected with the adjusting hole 12 on the guide plate 6 through the bent rod 18 and cannot rotate, the rotation of the screw rod 21 controls the movement of the screw nut 17, the screw nut 17 drives the guide plate 6 to move through the bent rod 18, and the guide plate 6 moves to tighten the saw chain 7, realizing the adjustment of the tension of the saw chain 7.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool change free and chain tension adjustment electric saw, characterized by, Include: Drive machine (1), the drive machine (1) movable connection has guide plate (6), the guide plate (6) has two adjusting holes (12) on it, the drive machine (1) is rotatably installed with two knobs (4), the knob (4) is connected with the plug (13) in the inside through the spring (14); Cover (3), the cover (3) is installed to the side of drive machine (1), and the surface of cover (3) is provided with the insertion slot (2) corresponding to the plug (13), the surface of cover (3) is rotatably connected with worm (5); Limit seat (15), the screw rod (21) is rotatably installed in the limit seat (15), and the screw rod (21) is fixedly connected with the worm wheel (16) engaged with the worm (5), the screw rod (21) is drivingly connected with the screw nut (17), and the screw nut (17) is drivingly connected with the adjusting hole (12).

2. A tool-less chain tensioning electric saw according to claim 1, characterized in that: The drive machine (1) is drivingly connected with saw chain (7), and the saw chain (7) is installed to the guide plate (6).

3. A tool-less chain tensioning electric saw according to claim 1, wherein: The surface of drive machine (1) is provided with reinforcing strip (9), and the guide plate (6) is provided with reinforcing hole (10) corresponding to reinforcing strip (9).

4. A tool-less chain tension adjustment electric saw according to claim 1, wherein: The surface of drive machine (1) is provided with a plurality of positioning columns (19), and the cover (3) is provided with the positioning groove (20) matched with the positioning column (19).

5. A tool-less chain tensioning electric saw according to claim 1, wherein: The screw nut (17) is fixedly connected with the bent rod (18), and the bent rod (18) is inserted into the inside of adjusting hole (12).

6. A tool-less chain tensioning electric saw according to claim 1, wherein: The surface of drive machine (1) is provided with stabilizing column (11), and the stabilizing column (11) is inserted into the inside of another adjusting hole (12).

7. A tool-less chain tensioning electric saw according to claim 1, wherein: The upper portion of the surface of drive machine (1) is provided with clamping groove (8), and the upper portion of cover (3) is clamped into the inside of clamping groove (8).

8. A tool-less chain tensioning electric saw according to claim 1, wherein: The end of worm (5) is sleeved with rotating wheel (22).

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