CN212602336U

CN212602336U - Chain saw

Info

Publication number: CN212602336U
Application number: CN202020998346.6U
Authority: CN
Inventors: 虞森; 祝恒洪
Original assignee: Ningbo Shimu Electromechanical Co ltd
Current assignee: Ningbo Shimu Electromechanical Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-02-26
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a chain saw, including casing assembly, setting cutter and the wood inserting tooth on the same one end of casing assembly, its characterized in that: the chain saw further comprises a guard for blocking wood chips, the guard being arranged adjacent to the tool. Compared with the prior art, the utility model has the advantages of: the guard plates are arranged at the adjacent positions of the cutters, so that sawdust splashing upwards or towards two sides can be prevented, the safety of an operator can be protected, and the safety performance of the chain saw is improved.

Description

Chain saw

Technical Field

The utility model relates to an electric tool, especially a chain saw.

Background

The chain saw, also called as chain saw, is a hand saw powered by gasoline engine, mainly used for lumbering and building timber, and its working principle is that the shearing action is carried out by the transverse movement of the staggered L-shaped blades on the saw chain.

When a chain saw is used for cutting wood, the wood is often required to be clamped by a wood inserting tooth. A chain saw as disclosed in chinese patent application No. 201910830703.X, comprising: the shell comprises a first shell, a second shell and an accommodating cavity formed by the first shell and the second shell in a surrounding mode; the cutter comprises a cutter chain and a cutter plate for supporting the cutter chain, and the cutter is mounted on the shell; a power assembly including a driving unit for driving the tool and a power supply unit for supplying power to the driving unit; the wood inserting teeth and the chain blocking blocks are integrally formed and fixed on the fixing part. Also, as disclosed in chinese patent application No. 201520220993.3, a chain saw capable of simply mounting a wood insert to a sprocket cover of the chain saw includes: a sprocket cover for covering the base end of the guide plate and the sprocket on the side of the housing in which the prime mover is disposed; and a wood insert tooth mounted on an outer peripheral surface of the sprocket cover; the wood inserting tooth includes: a plate-shaped pin fixed to an outer peripheral surface of the sprocket cover and having a plurality of claw portions protruding forward at a front end portion; and a clamping portion extending inward from the plate-shaped nail through a front-side opening of the sprocket cover, and clamping the sprocket cover together with the plate-shaped nail.

When the chain saw is used for cutting wood, wood chips are easy to splash, and potential safety hazards are generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the problem that above-mentioned prior art exists, provide a chain saw, can block the saw-dust, improve the security performance.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a chain saw, includes the casing subassembly, sets up cutter and the wood inserting tooth on the same end of casing subassembly which characterized in that: the chain saw further comprises a guard for blocking wood chips, the guard being arranged adjacent to the tool.

According to an aspect of the utility model, backplate and housing assembly fixed connection.

According to another aspect of the invention, the guard plate is rotatably connected with the housing assembly.

For the backplate rotates relative housing assembly, backplate and housing assembly pass through coupling mechanism and rotate the connection, coupling mechanism include with housing assembly end fixing's support, set up the pivot on the support, the tip cover of backplate is established in the periphery of pivot and keep rotating and the trend that is close to the cutter direction.

Preferably, in order to facilitate synchronous disassembly of the guard plate and the wood inserting teeth, the support and the wood inserting teeth are integrally formed.

Preferably, the guard plate is curved so as to be depressed in a direction away from the cutter toward the side of the cutter in order to increase the range of blocking the chips.

In order to facilitate high branch cutting, the chain saw further comprises a holding part and an extension rod connected between the holding part and the shell assembly, the extension rod is connected with the shell assembly through an angle adjusting mechanism, and the angle adjusting mechanism comprises a fixing support fixedly connected with one end, facing the shell assembly, of the extension rod, a switching support connected with one end, facing the extension rod, of the shell assembly, and a locking button capable of enabling the fixing support and the switching support to be locked or unlocked and to rotate relatively.

Preferably, the fixing bracket comprises a first accommodating cavity, the adapter bracket) comprises a second accommodating cavity which is coaxial with the first accommodating cavity and can rotate relatively, and the locking button is cylindrical and is inserted into the second accommodating cavity and the first accommodating cavity from one end of the second accommodating cavity far away from the first accommodating cavity; first teeth are distributed on the inner peripheral wall of the first accommodating cavity of the fixed support along the circumferential direction, second teeth are distributed on the inner peripheral wall of the second accommodating cavity of the switching support along the circumferential direction, third teeth are distributed on the outer peripheral wall of the locking button along the circumferential direction, and when the fixed support is in a fixed state, the third teeth are respectively meshed with the first teeth and the second teeth; when the locking button is in an adjusting state, the locking button is pressed into the first accommodating cavity, so that the second teeth are separated from the third teeth; the locking button maintains a tendency to extend through the second receiving cavity to the exterior of the adaptor bracket to lock the mounting bracket and the adaptor bracket.

According to an aspect of the utility model, can lock through the hasp subassembly between switching support and the casing subassembly.

According to another aspect of the present invention, the adapter bracket and the housing assembly can be locked by a trigger assembly.

Compared with the prior art, the utility model has the advantages of: the guard plates are arranged adjacent to the cutters, so that sawdust splashed upwards or towards two sides can be blocked, the safety of an operator can be protected, and the safety performance of the chain saw is improved; through angle adjustment mechanism between extension rod and casing subassembly, can adapt to different complex environment, enlarge application scope.

Drawings

FIG. 1 is a schematic view of a first embodiment of a chain saw of the present invention;

FIG. 2 is a schematic view of a second embodiment of the chain saw of the present invention in a state

FIG. 3 is an exploded view of a second embodiment of the chain saw of the present invention;

FIG. 4 is a schematic view of another state of a second embodiment of the chain saw of the present invention;

FIG. 5 is a schematic view of a third embodiment of a chain saw of the present invention;

FIG. 6 is an exploded view of a third embodiment of the chain saw of the present invention;

FIG. 7 is an enlarged view of a portion I of FIG. 6;

FIG. 8 is a back schematic view of a third embodiment of a chain saw of the present invention;

FIG. 9 is an enlarged view of portion II of FIG. 8;

FIG. 10 is an exploded view of FIG. 8;

FIG. 11 is an enlarged view of a portion III of FIG. 10;

FIG. 12 is a rear schematic view of a fourth embodiment of a chain saw of the present invention;

fig. 13 is an enlarged view of a portion iv of fig. 12.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the disclosed embodiments of the invention may be oriented in different directions and the directional terms are intended to be illustrative and should not be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1, a chain saw, which is a mini chain saw, includes a housing assembly 1, a cutter 2 provided on the housing assembly 1, and a power assembly (not shown) provided in the housing assembly 1 for driving the cutter 2 to perform a cutting work.

The housing assembly 1 comprises a first housing 11 and a second housing 12 which are buckled with each other, and the cutter 2 extends out of the housing assembly 1 from the cavity formed by the first housing 11 and the second housing 12. The housing assembly 1 has opposite first and second ends, the tool 2 extending from the first end of the housing assembly 1, and the second end of the housing assembly 1 being provided with a grip portion 5.

The first end of the shell assembly 1 is provided with the wood inserting teeth 3 and the guard plate 4, the wood inserting teeth 3 are detachably connected with the shell assembly 1 and are arranged adjacent to the cutter 2, and can bite an object to be cut (in the embodiment, wood is taken as an example) when cutting, so that the chain saw is prevented from rebounding (rebounding) to hurt people when cutting, and the chain is prevented from being broken. Backplate 4 and housing assembly 1 fixed connection to under the user state, backplate 4 is located the top of cutter 2, thereby when cutter 2 cutting timber, even there is the saw-dust upwards to splash, also can block it, and can avoid hindering the people. In the present embodiment, the guard plate 4 has a substantially L-shaped configuration, and is bent from above the wood-inserting teeth 3 to extend above the cutter 2.

Example two

Referring to fig. 2 and 3, in the present embodiment, the difference from the first embodiment is that the guard plate 4 and the wood inserting teeth 3 are connected with each other, and the guard plate 4 can rotate relative to the wood inserting teeth 3, so as to adjust the angle between the guard plate and the cutter 2. Since the latch 3 is fixed relative to the housing assembly 1, the guard plate 4 can rotate relative to the housing assembly 1.

The guard plate 4 is connected to the housing assembly 1 through a connecting mechanism, and includes a bracket 41 fixed to an end portion of the housing assembly 1 (above a connecting portion with the cutter 2), a rotating shaft 42 provided on the bracket 41, and a torsion spring 43 provided on the rotating shaft 42, wherein the bracket 41 is preferably integrated with the latch 3. The end of the guard plate 4 is sleeved on the periphery of the rotating shaft 42 and can rotate relative to the rotating shaft 42. Both ends of the torsion spring 43 abut against the guard 4 and the holder 41, respectively, so that the guard 4 tends to rotate toward the tool 2 and approach the tool 2. The guard plate 4 can be rotated towards the tool 2 or away from the tool 2, i.e. in a vertical plane. The guard 4 is in a position closest to the tool 2, see fig. 2, and the guard 4 is in a position furthest from the tool 2, see fig. 4.

When the chain saw performs a cutting operation, the wood exerts a force on the guard plate 4, and as the cut deepens, the wood exerts a force on the guard plate 4, causing it to rotate in a direction away from the cutter 2. Since the rotation center of the guard plate 4 is located at the rear side of the cutter 2, the chips can be guided forward without hurting people when the guard plate 4 is rotated upward.

For better stopping the saw-dust, backplate 4 can be by the sunken arc of the orientation of keeping away from cutter 2 of orientation one side to can wrap up in the top of cutter 2, increase the area that stops, can block the saw-dust that cutter 2 upper portion and left and right sides splashed. The wood-inserting teeth 3 have two functions, namely, not only biting the wood during cutting and preventing the chain saw from rebounding (bouncing) to hurt people during cutting, but also serving as a fixed support of the guard plate 4.

The guard plate 4 and the wood inserting teeth 3 are connected, so that the whole body can be detached from the shell assembly 1.

EXAMPLE III

Referring to fig. 5 and 6, in the present embodiment, the difference from the second embodiment is that the grip 5 and the housing 1 are not directly connected but connected by the extension bar 6, thereby facilitating the cutting of branches and the like at higher positions.

When the device is used for high branch cutting, the angle between the extension rod 6 and the shell assembly 1 (the cutter 2) must be adjusted, so that the device can adapt to different complex environments. To this end, an angle adjusting mechanism is provided between the housing assembly 1 and the extension pole 6, and, referring to fig. 6 and 7, includes a fixing bracket 71 fixedly coupled to an end of the extension pole 6 facing the housing assembly 1, an adaptor bracket 72 coupled to an end (second end) of the housing assembly 1 facing the extension pole 6, and a locking button 73 coupled between the fixing bracket 71 and the adaptor bracket 72. The fixing bracket 71 and the adapting bracket 72 can be two, such as the first housing 11 and the second housing 12 of the housing assembly 1, which are assembled together by means of a snap-fit manner. Thus, there are also two corresponding lock buttons 73.

A cylindrical first accommodating cavity 711 is formed in a portion of the fixing bracket 71, which is disposed in the adapting bracket 72, a cylindrical second accommodating cavity 721 is formed at one end of the adapting bracket 72, which faces the fixing bracket 71, and two ends of the second accommodating cavity 721 in the axial direction penetrate through the adapting bracket 72. The end of the fixing bracket 71 facing the adapter bracket 72 is in a matching cylindrical shape, so that it can be received in the adapter bracket 72, and the adapter bracket 72 can rotate relative to the fixing bracket 71. The first accommodating cavity 711 and the second accommodating cavity 721 are disposed coaxially and correspond to each other, and the two first accommodating cavities 711 are close to each other, that is, the first accommodating cavity 711 is located at the inner side of the second accommodating cavity 721 in the axial direction. The locking button 73 is cylindrical, the second receiving chamber 721, the first receiving chamber 711, and the second receiving chamber 721 are sequentially inserted from the outside of the entire machine, and the locking button 73 is opened toward one side of the first receiving chamber 711 of the fixing bracket 71. The locking button 73, the first housing chamber 711 and the second housing chamber 721 are coaxially arranged.

A positioning column 712 extending towards the second receiving cavity 721 is arranged in the first receiving cavity 71, a pressure spring 74 may be arranged on the positioning column 712, one end of the pressure spring 74 abuts against the bottom of the second receiving cavity 711 far away from the first receiving cavity 711, and the other end abuts against the inside of the locking button 73, so that the locking button 73 keeps extending out of the second receiving cavity 721 to contact and press from the outside of the chain saw. First teeth 713 are circumferentially distributed on the inner circumferential wall of the first accommodating cavity 711 of the fixing bracket 71, second teeth 722 are circumferentially distributed on the inner circumferential wall of the second accommodating cavity 721 of the adapting bracket 72, and third teeth 731 are circumferentially distributed on the outer circumferential wall of the locking button 73. The length of the third tooth 731 in the axial direction ensures that it can mesh with the first tooth 713 and the second tooth 722 simultaneously. The locking button 73 may be prevented from being disengaged from the second receiving chamber 721 by the change of the outer diameter or by the third tooth 731. Alternatively, the lock button 73 may be provided with a catch to engage with the fixing bracket 71.

In the fixed state, the locking button 73 is partially exposed from the adapter bracket 72, and the first tooth 713 and the second tooth 722 are respectively engaged with the third tooth 731, so that the fixing bracket 71, the adapter bracket 72, and the locking button 73 are fixed to each other and cannot rotate. When the angle of the housing assembly 1 (the cutter 2) relative to the extension rod 6 (the holding part 5) needs to be adjusted, the two locking buttons 73 are pressed towards each other (towards the first accommodating cavity 711), so that the compression spring 74 is compressed, meanwhile, the third teeth 731 of the locking buttons 73 completely enter the first accommodating cavity 711 and are disengaged from the second teeth 722 of the adapting bracket 72, at this time, the adapting bracket 72 can be rotated relative to the fixing bracket 71 to adjust the angle of the adapting bracket 71, after the adjustment is completed, the locking buttons 73 move towards the direction leaving the first accommodating cavity 711 again under the restoring force of the compression spring 74 until the third teeth 731 of the locking buttons 73 are partially penetrated out of the adapting bracket 72, so that the third teeth 731 of the locking buttons 73 are engaged with the second teeth 722 of the adapting bracket 72 again, and the fixing bracket 71, the adapting bracket 72 and the locking buttons 73 are restored to be fixed with each other. In the present embodiment, the adjustment angles may be 0 °, 30 °, 60 °, and 90 °.

Referring to fig. 8 to 11, the adaptor bracket 72 and the housing assembly 1 are locked by the locking assembly 8. The adapter bracket 72 and the housing assembly 1 can be connected by conventional connection methods, such as snap-fit, or plug-in connection. After the connection is completed, it is locked by the locking catch assembly 8. The latch assembly 8 includes a latch 81 rotatably disposed on the adapting bracket 72, and a locking portion 82 disposed on the housing assembly 1, wherein the latch 81 has a protrusion 83, the locking portion 82 has a locking hole 84, the latch 82 is rotated relative to the adapting bracket 72, and the protrusion 83 can be locked in the locking hole 84. In this embodiment, two latches 81 are provided, each pivotally connected to the adaptor bracket 72, the two latches 81 are arranged in parallel and spaced apart, the protrusions 83 are provided on the sides of the latches 81 away from each other, and the locking portions 82 are provided on the sides of the latches 81 away from each other. The latch 81 may have elasticity, and when the latch needs to be locked, the latch 81 is rotated to make the protrusion 83 abut against the locking portion 82, the latch 81 retracts (retracts toward the approach of each other), and the latch 81 continues to be rotated, and when the protrusion 83 opposes to the locking hole 84 of the locking portion 82, the protrusion 83 may be snapped into the locking hole 84 by bouncing outward (the sides away from each other) under the elastic force of the latch 81. When the unlocking is needed, the protrusion 83 is pressed inwards to be separated from the lock hole 84, and then the lock catch 81 is rotated.

Of course, in this embodiment, the guard plate 4 may also adopt the configuration of the first embodiment.

Example four

Referring to fig. 12 and 13, in the present embodiment, the difference from the third embodiment is that the adaptor bracket 72 and the housing assembly 1 are locked by the trigger assembly 9.

Claims

1. The utility model provides a chain saw, includes housing assembly (1), sets up cutter (2) and the wood inserting tooth (3) on housing assembly (1) is same, its characterized in that: the chain saw further comprises a guard plate (4) for blocking wood chips, wherein the guard plate (4) is arranged adjacent to the cutter (2).

2. The chain saw as recited in claim 1, wherein: the guard plate (4) is fixedly connected with the shell assembly (1).

3. The chain saw as recited in claim 1, wherein: the guard plate (4) is rotatably connected with the shell assembly (1).

4. The chain saw as recited in claim 3, wherein: backplate (4) and casing subassembly (1) rotate through coupling mechanism and are connected, coupling mechanism include with casing subassembly (1) end fixing's support (41), set up pivot (42) on support (41), the tip cover of backplate (4) is established in the periphery of pivot (42) and keep rotating and be close to the trend of cutter (2) to cutter (2) direction.

5. The chain saw as recited in claim 4, wherein: the support (41) and the wood inserting teeth (3) are integrally formed.

6. The chain saw as recited in claim 3, wherein: the guard plate (4) is in an arc shape which is sunken from one side of the cutter (2) to the direction far away from the cutter (2).

7. The chain saw as recited in any one of claims 1 to 6, wherein: the chain saw further comprises a holding portion (5) and an extension rod (6) connected between the holding portion (5) and the housing assembly (1), the extension rod (6) and the housing assembly (1) are connected through an angle adjusting mechanism, the angle adjusting mechanism comprises a fixing support (71) fixedly connected with one end, facing the housing assembly (1), of the extension rod (6), a switching support (72) connected with one end, facing the extension rod (6), of the housing assembly (1), and a locking button (73) capable of enabling the fixing support (71) and the switching support (72) to be locked or unlocked and to rotate relatively.

8. The chain saw as recited in claim 7, wherein: the fixing support (71) comprises a first accommodating cavity (711), the adapter support (72) comprises a second accommodating cavity (721) which is coaxial with the first accommodating cavity (711) and can rotate relatively, the locking button (73) is cylindrical, and one end of the second accommodating cavity (721) far away from the first accommodating cavity (711) is inserted into the second accommodating cavity (721) and the first accommodating cavity (711); first teeth (713) are distributed on the inner circumferential wall of a first accommodating cavity (711) of the fixing support (71) along the circumferential direction, second teeth (722) are distributed on the inner circumferential wall of a second accommodating cavity (721) of the switching support (72) along the circumferential direction, third teeth (731) are distributed on the outer circumferential wall of the locking button (73) along the circumferential direction, and when the fixing support is in a fixed state, the third teeth (731) are respectively meshed with the first teeth (713) and the second teeth (722); when in the adjusting state, the locking button (73) is pressed into the first accommodating cavity (711), so that the second tooth (722) is disengaged from the third tooth (731); the locking button (73) maintains a tendency to extend to the outside of the adaptor bracket (72) through the second receiving chamber (721) to lock the fixing bracket (71) and the adaptor bracket (72).

9. The chain saw as recited in claim 7, wherein: the switching bracket (72) and the shell component (1) can be locked through a lock catch component (8).

10. The chain saw as recited in claim 7, wherein: the switching bracket (72) and the shell component (1) can be locked through a trigger component (9).