Chain saw

Abstract

The utility model relates to a chain saw which comprises a shell roughly extending in the longitudinal direction, a guide plate connected to the shell, wood inserting teeth located on the front side of the shell and an adjusting device connected to the shell. The adjusting device is connected with the wood inserting teeth and drives the wood inserting teeth to move at least between a first position and a second position relative to the shell, and when the chain saw is used for packaging, the wood inserting teeth are contained in the shell without damaging a packaging box.

Description

Technical Field

[0001] The utility model relates to a chainsaw, in particular to a chainsaw that can adjust the wood-inserting teeth without disassembly. Background Art

[0002] A chainsaw is a gardening tool that drives a chain with a blade to rotate at a high speed through a power device to cut wood or branches. When using a chainsaw to cut wood, it is usually necessary to make the wood-inserting teeth protrude from the chainsaw housing to abut against the wood. However, when the chainsaw is packaged, if the wood-inserting teeth protrude forward, the wood-inserting teeth may damage the packaging box. Usually, it is necessary to disassemble the wood-inserting teeth. On the one hand, it will cause the fastening screws to be frequently disassembled and become loose, bringing potential safety hazards. On the other hand, it will increase the user's work procedure and inconvenience the user.

[0003] In view of the above problems, it is necessary to provide a chainsaw to overcome the defects of the prior art. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a chainsaw with an adjusting device that can move the wood-inserting teeth without disassembly.

[0005] The technical solution adopted by the utility model to solve the problems of the prior art is: a chainsaw, including a housing extending substantially longitudinally, a guide plate connected to the housing, and a wood-inserting tooth located on the front side of the housing. The chainsaw includes an adjusting device connected to the housing. The adjusting device is connected to the wood-inserting tooth and drives the wood-inserting tooth to move relative to the housing at least between a first position and a second position.

[0006] A further improvement is: in the first position, the wood-inserting tooth protrudes from the longitudinal front end of the housing; in the second position, the wood-inserting tooth is received inside the housing.

[0007] A further improvement is: the moving direction of the wood-inserting tooth is parallel to the extending direction of the guide plate.

[0008] A further improvement is: the adjusting device includes an adjusting knob for user operation and a gear assembly connecting the adjusting knob and the wood-inserting tooth. The gear assembly includes a first gear connected to the adjusting knob and a second gear connected to the wood-inserting tooth. The first gear meshes with the second gear to move the wood-inserting tooth longitudinally between the first position and the second position.

[0009] A further improvement is: the second gear includes a rack extending longitudinally and a fixing portion located at the longitudinal front end of the rack. The wood-inserting tooth includes a connecting portion connected to the fixing portion.

[0010] A further improvement solution is as follows: The adjusting device includes a limiting frame connected to the housing. The limiting frame includes a limiting groove extending longitudinally, and the rack is received in the limiting groove to move longitudinally between the first position and the second position.

[0011] A further improvement solution is as follows: The adjusting device includes an axle locking assembly connected between the first gear and the adjusting knob. The axle locking assembly includes a rotating frame connected to the adjusting knob and an axle locking frame connecting the rotating frame and the first gear. The rotating frame and the axle locking frame cooperate to limit the free movement of the first gear in the first rotation direction and the second rotation direction.

[0012] A further improvement solution is as follows: The rotating frame includes several clamping portions extending towards the axle locking frame. The axle locking frame includes several cylindrical pins extending towards the rotating frame and a cooperating portion located between adjacent two of the cylindrical pins. At least part of the clamping portion is received in the cooperating portion.

[0013] A further improvement solution is as follows: The axle locking frame includes an axle locking block for connecting the first gear. A recessed portion is provided on the axle locking block, and the first gear includes a protruding portion cooperating with the recessed portion.

[0014] A further improvement solution is as follows: The chain saw includes a first cover plate at least partially covering the adjusting device and a second cover plate connected to the housing. The first cover plate includes an extending portion extending towards the second cover plate. The second cover plate includes a clamping portion cooperating with the extending portion. At least part of the extending portion is received in the clamping portion so that the first cover plate and the second cover plate enclose to form a receiving space at least partially receiving the adjusting device.

[0015] Compared with the prior art, the present utility model has the following beneficial effects: By providing the adjusting device, the insertion teeth move relative to the housing at least between the first position and the second position, so that when the chain saw is stored or packaged, the insertion teeth are received inside the housing without damaging the packaging box, and the packaging space of the chain saw can also be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings:

[0017] Figure 1 is a schematic structural diagram of a chain saw according to a preferred embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a partial structural diagram of the insertion teeth of the chain saw shown in the first position;

[0019] Figure 3 For Figure 1 Partial structural schematic diagram of the felling tooth of the chain saw shown in the figure being in the second position;

[0020] Figure 4 For Figure 1 Exploded view of the adjusting device shown in the figure;

[0021] Figure 5 For Figure 4 Cross-sectional view of the adjusting device shown in the figure;

[0022] Figure 6 For Figure 4 Structural schematic diagram of the rotating frame in the adjusting device shown in the figure;

[0023] Figure 7 For Figure 4 Structural schematic diagram of the shaft lock frame in the adjusting device shown in the figure;

[0024] Meanings of the reference numerals in the figure:

[0025] Chain saw 100, housing 10

[0026] Guide plate 20, felling tooth 30

[0027] Connecting part 31, adjusting device 40

[0028] Adjusting knob 41, first cover plate 42

[0029] Extension part 421, bolt 43

[0030] Flat position 431, rotating frame 44, clamping part 441, groove 442, shaft lock frame 45, cylindrical pin 451, mating part 452, shaft lock block 453, recessed part 454, first gear 46

[0031] Protruding part 461, second gear 47, rack 471, fixing part 472

[0032] Second cover plate 48, engaging part 481, limiting frame 49, limiting groove 491, bearing 492, auxiliary handle 50

[0033] Main handle 60, brake baffle 70

[0034] Power supply device 80 Specific implementation mode

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and the implementation mode.

[0036] The terms used in the present utility model are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", etc. are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0037] Please refer to Figure 1 As shown, a preferred embodiment of the present utility model relates to a chainsaw 100, which includes a housing 10 extending substantially longitudinally, a guide plate 20 connected to the housing 10, and a log tooth 30 located on the front side of the housing 10. In this embodiment, the chainsaw further includes an adjusting device 40 connected to the housing 10, a main handle 60 located at the tail of the housing 10, an auxiliary handle 50 located at the top of the housing, a brake baffle 70 movably installed at the front of the housing 10, and a power supply device 80 for supplying power to the power device 4.

[0038] The adjusting device 40 is connected to the log tooth 30 and drives the log tooth 30 to move relative to the housing 10 at least between a first position and a second position, and the moving direction of the log tooth 30 is parallel to the extending direction of the guide plate 20. On the one hand, when the chainsaw 100 is being packaged, the log tooth 30 can be received inside the housing 10 without damaging the packaging box, avoiding the partial function failure of the chainsaw caused by packaging damage when the machine drops, thereby reducing the user's unpacking experience; on the other hand, it can save the packaging space of the chainsaw 100.

[0039] Please refer to Figures 2 to 3 As shown, when the log tooth 30 is in Figure 2 the first position shown, the log tooth 30 protrudes from the longitudinal front end of the housing 10 and is used to abut against the target object when the chainsaw 100 is working properly, facilitating the user to operate the chainsaw smoothly; when the log tooth 30 is in Figure 3 the second position shown, the log tooth 30 is received inside the housing 10 to prevent the log tooth 30 from damaging the packaging box when the chainsaw 100 is being packaged, which brings inconvenience to the user.

[0040] Please refer to Figures 2 to 4 As shown, the adjusting device 40 includes an adjusting knob 41 for user operation and a gear assembly connecting the adjusting knob 41 and the log tooth 30. The gear assembly includes a first gear 46 connected to the adjusting knob 41 and a second gear 47 connected to the log tooth 30. The first gear 46 meshes with the second gear 47 to move the log tooth 30 longitudinally between the first position and the second position.

[0041] The second gear 47 includes a rack 471 extending longitudinally and a fixing portion 472 located at the longitudinal front end of the rack 471. The plugging tooth 30 includes a connecting portion 31 connected to the fixing portion 472. The connecting portion 31 of the plugging tooth 30 is fixed to the fixing portion 472 at the front end of the rack 471 by a fastening screw, so that the plugging tooth 30 follows the rack 471 to move freely in the front-rear direction.

[0042] Please refer to Figures 2 to 4 As shown, the adjusting device 40 further includes a limiting frame 49 connected to the housing 10. The limiting frame 49 includes a limiting groove 491 extending longitudinally. The rack 471 is received in the limiting groove 491 to move longitudinally between the first position and the second position, thereby driving the plugging tooth 30 to move between the first position and the second position.

[0043] Please refer to Figure 4 As shown, the adjusting device 40 includes an axle locking assembly connected between the first gear 46 and the adjusting knob 41. The axle locking assembly includes a rotating frame 44 connected to the adjusting knob 41 and an axle locking frame 45 connecting the rotating frame 44 and the first gear 46. The rotating frame 44 and the axle locking frame 45 cooperate to limit the free movement of the first gear 46 in the first rotation direction and the second rotation direction.

[0044] When the adjusting knob 41 is rotated clockwise, the adjusting knob 41 drives the bolt 43 to rotate. One end of the bolt 43 facing the rotating frame 44 is provided with a flat portion 431. The rotating frame 44 includes a groove 442 cooperating with the flat portion 431. The bolt 43 drives the rotating frame 44 and the axle locking frame 45 to rotate accordingly. The axle locking frame 45 and the first gear 46 are in cooperative transmission, so that the first gear 46 rotates in the first rotation direction; when the adjusting knob 41 is rotated counterclockwise, the bolt 43 drives the rotating frame 44 and the axle locking frame 45 to rotate, thereby realizing the rotation of the first gear 46 in the second rotation direction.

[0045] Please refer to Figure 4 As shown, the rotating frame 44 includes several clamping portions 441 extending towards the axle locking frame 45. The axle locking frame 45 includes several cylindrical pins 451 extending towards the rotating frame 44 and a cooperating portion 452 located between adjacent two of the cylindrical pins 451. At least part of the clamping portions 441 is received in the cooperating portion 452. The axle locking frame 45 further includes an axle locking block 453 for connecting the first gear 46. The axle locking block 453 is provided with a recessed portion 454. The first gear 46 includes a protruding portion 461 cooperating with the recessed portion 454.

[0046] When the adjusting knob 41 is rotated, the rotating frame 44 is driven to rotate by the bolt 43. Several engaging portions 441 on the rotating frame 44 cooperate with the engaging portion 452 of the shaft locking frame 45, thereby driving the cylindrical pin 451 and the shaft locking block 453 to rotate, so that the first gear 46 rotates along the first rotation direction. At this time, the bolt 43 is tightened.

[0047] When the log inserting teeth 30 protrude outside the housing 10 to abut against the workpiece for operation, since the log inserting teeth 30 are fixed on the rack 471, a reaction force will act on the rack 471 through the log inserting teeth 30, and then the force is transmitted to the first gear 46. Since the convex portion 461 of the first gear 46 is in transmission cooperation with the concave portion 454 of the shaft locking block 453, the force is transmitted to the shaft locking block 453. However, since the cylindrical pin 451 rotates to a relatively narrow area of the shaft locking block 453, the cylindrical pin 451 does not rotate with the shaft locking block 453 but restricts the rotation of the shaft locking block 453, and thus the rotating frame 44 and the bolt 43 will not rotate. Therefore, the shaft locking assembly can effectively prevent the bolt 43 from loosening due to the reaction force of the log inserting teeth 30 abutting against the workpiece and then acting on the first gear 46. In addition, it also prevents the log inserting teeth 30 from sliding during normal operation.

[0048] The chain saw 100 includes a first cover plate 42 that at least partially covers the adjusting device 40 and a second cover plate 48 connected to the housing. The first cover plate 42 includes an extending portion 421 extending toward the second cover plate 48. The second cover plate 48 includes an engaging portion 481 that cooperates with the extending portion 421. At least a part of the extending portion 421 is received in the engaging portion 481 so that the first cover plate 42 and the second cover plate 48 enclose to form a receiving space that at least partially receives the adjusting device 40. The log inserting teeth 30 are located in the receiving space defined by the first cover plate 42 and the second cover plate 48. Since the extending portion 421 of the first cover plate 42 abuts against the engaging portion 481 of the second cover plate 48, the second cover plate 48 will be slightly deformed to play a certain supporting role for the log inserting teeth 30, preventing the log inserting teeth 30 from loosening due to only one connecting portion 31 being fixed to the rack 471.

[0049] The present utility model is not limited to the above specific embodiments. Those of ordinary skill in the art can easily understand that without departing from the principles and scope of the present utility model, there are many alternative solutions for the chain saw of the present utility model. The protection scope of the present utility model shall be subject to the content of the claims.

Claims

1. A chain saw, comprising a housing extending substantially in a longitudinal direction, a guide plate connected to the housing, and a wood inserting tooth located at a front side of the housing, characterized in that: The chain saw comprises an adjustment device connected to the housing, wherein the adjustment device is connected to the staking tooth and drives the staking tooth to move relative to the housing between at least a first position and a second position.

2. The chain saw according to claim 1, characterized in that: When in the first position, the wood inserting tooth protrudes out of the longitudinal front end of the shell; when in the second position, the wood inserting tooth is accommodated in the interior of the shell.

3. The chain saw according to claim 2, characterized in that: The moving direction of the wood inserting teeth is parallel to the extending direction of the guide plate.

4. The chain saw according to claim 1, characterized in that: The adjusting device includes an adjusting knob for user operation and a gear assembly connecting the adjusting knob and the wood-plugging tooth, the gear assembly includes a first gear connected to the adjusting knob and a second gear connected to the wood-plugging tooth, the first gear is meshed with the second gear to enable the wood-plugging tooth to move longitudinally between the first position and the second position.

5. The chain saw according to claim 4, characterized in that: The second gear includes a rack extending in the longitudinal direction and a fixing portion located at the longitudinal front end of the rack, and the wood inserting tooth includes a connecting portion connected to the fixing portion.

6. The chain saw according to claim 5, characterized in that: The adjusting device comprises a limiting frame connected to the housing, the limiting frame comprises a limiting groove extending in the longitudinal direction, the rack is accommodated in the limiting groove and moves in the longitudinal direction between the first position and the second position.

7. The chain saw according to claim 4, characterized in that: The adjusting device includes an axis lock assembly connected between the first gear and the adjusting knob, the axis lock assembly includes a rotating frame connected to the adjusting knob and an axis lock frame connecting the rotating frame and the first gear, the rotating frame cooperates with the axis lock frame to limit the free movement of the first gear in the first rotation direction and the second rotation direction.

8. The chain saw according to claim 7, characterized in that: The rotating frame includes a plurality of clamping parts extending toward the shaft lock frame, and the shaft lock frame includes a plurality of cylindrical pins extending toward the rotating frame and a matching part located between two adjacent cylindrical pins, and the clamping part is at least partially accommodated in the matching part.

9. The chain saw according to claim 8, characterized in that: The shaft locking frame includes a shaft locking block for connecting the first gear, the shaft locking block is provided with a recessed portion, and the first gear includes a protruding portion matched with the recessed portion.

10. The chain saw according to claim 1, characterized in that: The chain saw includes a first cover plate that at least partially covers the adjusting device and a second cover plate connected to the shell, the first cover plate includes an extension portion extending toward the second cover plate, the second cover plate includes a clamping portion that cooperates with the extension portion, and the extension portion is at least partially accommodated in the clamping portion so that the first cover plate and the second cover plate enclose a storage space that at least partially accommodates the adjusting device.

Images