CN204505573U - Portable cutting machine - Google Patents
Portable cutting machine Download PDFInfo
- Publication number
- CN204505573U CN204505573U CN201520104575.8U CN201520104575U CN204505573U CN 204505573 U CN204505573 U CN 204505573U CN 201520104575 U CN201520104575 U CN 201520104575U CN 204505573 U CN204505573 U CN 204505573U
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- Prior art keywords
- mentioned
- limiter
- arm
- cutting machine
- portable cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/22—Safety devices specially adapted for cutting machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Sawing (AREA)
- Harvester Elements (AREA)
Abstract
The utility model provides a kind of portable cutting machine, and it can suppress limiter to be out of shape.Portable cutting machine has: support the arm (23) utilizing the blade (24) of the dynamic rotation of engine (14); Cover a part for the circumferencial direction of blade (24), and the wheel protector (43) of arm (23) can be installed under the state of the circumferencial direction movement of blade (24); When taking turns protector (43) and moving along the circumferencial direction of blade (24) relative to arm (23), the arm (23) that wheel protector (43) is stopped at preposition relative to arm (23) and jut (57); And suppress jut (57) contact site (58) that is out of shape on the direction crossing with the direction of the power making wheel protector (43) stop and arm (23).
Description
Technical field
The utility model relates to and utilizes the power of power source that throw is rotated, and utilizes throw to cut off the cutting machine of object.
Background technology
The portable cutting machine with throw has engine cutting machine etc.Engine cutting machine utilizes the power of engine that throw is rotated, and throw is contacted, for cutting off object with the object such as stone material or concrete.The example of this portable cutting machine is recorded in patent document 1.
Portable cutting implement described in patent document 1 is standby is provided with the shell of engine, the arm being installed on shell and the blade as throw that can support rotatably relative to arm by means of bearing.In addition, mounting knob on shell, user grasps handle and uses portable cutting machine.
In addition, the portable cutting machine described in patent document 1 is by the main shaft of the power transmission of the output shaft of engine to throw.In addition, the portable cutting machine described in patent document 1 installs the wheel protector as protecting component on arm.Wheel protector has the shape of the half of the circumferencial direction covering blade.Wheel protector, at the circumferencial direction of blade, utilizes frictional force to be positioned on arm.Wheel protector in order to cutting powder when preventing from utilizing blade to cut off object disperse to portable cutting machine surrounding and arrange.
In addition, wheel protector is provided with angle adjustment lever.Operating personnel's work angle adjusting lever, wheel protector is applied above the power of detent force, wheel protector can be made centered by main shaft to rotate.That is, operating personnel according to the service condition of the size of the shape of object, object etc., portable cutting machine, can change the holding position of wheel protector at the angular range of regulation.
In addition, wheel protector is provided with limiting mechanism.In the use of portable cutting machine, damaged when blade distortion, the fragment of blade contacts with wheel protector, and wheel protector is applied above the power of detent force, and wheel protector rotates centered by main shaft, then limiting mechanism and arm contact.Therefore, the angular range that can prevent wheel protector from exceeding regulation with running counter to the intention of operating personnel rotates.
Prior art document
Patent document 1: Japanese Unexamined Patent Publication 2012-232379 publication
But the portable cutting machine described in patent document 1, when being prevented from taking turns protector by limiting mechanism and arm contact and rotating, exists due to inertia force when wheel protector rotates, the possibility of limiting mechanism distortion.
Utility model content
When the purpose of this utility model is to be provided in and prevents protecting component from inadvertently rotating, the portable cutting machine that limiting mechanism is out of shape can be suppressed.
Portable cutting machine of the present utility model has: support the support component utilizing the throw of the dynamic rotation of power source; Cover a part for the circumferencial direction of above-mentioned throw, and the protecting component of above-mentioned support component can be installed under the state of the circumferencial direction movement of above-mentioned throw; When above-mentioned protecting component moves along the circumferencial direction of above-mentioned throw relative to above-mentioned support component, make the limiting mechanism that above-mentioned protecting component stops at preposition relative to above-mentioned support component; And the distortion dampening mechanism suppressing above-mentioned limiting mechanism to be out of shape on the direction crossing with the direction of the power making above-mentioned protecting component stop.
Above-mentioned distortion dampening mechanism possesses the contact site extended abreast with the surfaces of revolution of above-mentioned throw.
Above-mentioned distortion dampening mechanism is located at above-mentioned protecting component.
Above-mentioned distortion dampening mechanism is located at above-mentioned protecting component and above-mentioned support component both sides.
Above-mentioned limiting mechanism is located at above-mentioned protecting component.
Above-mentioned limiting mechanism is located at above-mentioned protecting component and above-mentioned support component both sides.
The material of above-mentioned limiting mechanism comprises synthetic resin or elastomeric at least one party.
The material of above-mentioned distortion dampening mechanism comprises synthetic resin or elastomeric at least one party.
Above-mentioned distortion dampening mechanism and the above-mentioned limiting mechanism of being located at above-mentioned protecting component are integrated mutually.
Above-mentioned distortion dampening mechanism possesses blocking mechanism, this blocking mechanism at above-mentioned protecting component relative to above-mentioned support component circumferentially the moving of above-mentioned throw time produce resistance.
Above-mentioned blocking mechanism produces resistance with above-mentioned support component friction, and the inclined plane of end slope relative to above-mentioned protecting component,
Above-mentioned limiting mechanism possesses and contacts with above-mentioned support component and make the jut that above-mentioned protecting component stops.
Above-mentioned limiting mechanism comprises the first limiter being installed on above-mentioned protecting component and the second limiter being installed on above-mentioned support component,
Above-mentioned blocking mechanism comprises to be located at above-mentioned first limiter and to produce the first contact site of resistance with above-mentioned support component friction and be located at above-mentioned second limiter and produce the second contact site of resistance with above-mentioned protecting component friction.
Arrange and can not carry out relative to above-mentioned support component the maintaining body that keeps in the mode of the circumferentially movement of above-mentioned throw with above-mentioned protecting component,
Above-mentioned limiting mechanism, when the power of the confining force exceeding above-mentioned maintaining body is applied to above-mentioned protecting component and makes above-mentioned protecting component above-mentioned throw circumferentially mobile, makes above-mentioned protecting component stop.
Above-mentioned power source comprises makes fuel combustion and the engine producing power.
Be provided with: carry above-mentioned engine, and the working rig main body of above-mentioned support component is installed; Be located at the drive pulley of the output shaft of above-mentioned engine; Be located at above-mentioned support component, and the main shaft of above-mentioned throw is installed; Be installed on the follow-up pulley of above-mentioned main shaft; And be wound in the belt of above-mentioned drive pulley and above-mentioned follow-up pulley.
Effect of the present utility model is as follows.
According to the utility model, when external force is applied on protecting component and protecting component rotates, produce the power in the direction that limiting mechanism makes protecting component stop, protecting component stops at preposition relative to support component.In addition, when limiting mechanism is out of shape on the direction crossing with the power in the direction making protecting component stop, deformation suppression section part contacts with limiting mechanism, suppresses the distortion of limiting mechanism.
Accompanying drawing explanation
Fig. 1 is the front view of the engine cutting machine represented as portable cutting machine.
Fig. 2 is the front view of the hood having unloaded the engine cutting machine shown in Fig. 1.
Fig. 3 is the rearview of the engine cutting machine shown in Fig. 1.
Fig. 4 is the sectional view of the engine shown in Fig. 2.
Fig. 5 is the side sectional view of the V-V line of Fig. 3.
Fig. 6 is the amplification view of the major part representing Fig. 5.
Fig. 7 is the bottom sectional view of the VII-VII line of Fig. 3.
Fig. 8 (A), (B), (C) represent the sectional view being installed on the wheel limiter of protector and the position relationship of arm.
Fig. 9 is the partial perspective view of the wheel protector shown in Fig. 3.
Figure 10 is the partial front elevation view of other examples representing blocking mechanism of the present utility model and limiting mechanism.
Figure 11 is the partial perspective view of the wheel protector shown in Figure 10.
Figure 12 is the side sectional view of the XII-XII line of Figure 10.
Figure 13 (A), (B) are the first limiters of representing the wheel protector being installed on Figure 12 and the sectional view of position relationship of the second limiter being installed on arm.
Figure 14 (A), (B) are the first limiters of representing the wheel protector being installed on Figure 12 and the sectional view of position relationship of the second limiter being installed on arm.
Figure 15 (A), (B) are the amplification views of the first limiter shown in Figure 14 (B) and the second limiter.
Detailed description of the invention
Below, embodiment of the present utility model is explained with reference to the accompanying drawings.As shown in FIG. 1 to 3, the engine cutting machine 10 as portable cutting machine has the main stand 11 as working rig main body, and rear handle 12 is arranged highlightedly from the end of main stand 11.Rear handle 12 is provided with the throttling rod 12a of adjustment engine rotary speed.Main stand 11 is provided with foot 11a, 11b, and the engine cutting machine 10 shown in Fig. 1 ~ Fig. 3 represents the state of foot 11a, 11b ground connection.
Main stand 11 is installed front handlebar 13.Front handlebar 13 is bent into arch shape, and the both ends of the length direction of front handlebar 13 are fixed on main stand 11.Operating personnel is when utilizing engine cutting machine 10 workpiece, and handle 12 after holding with a hand, holds front handlebar 13 with another hand, and mention engine cutting machine 10.Like this, engine cutting machine 10 is that operating personnel can grasp and mention or the portable cutting machine of movement.
Main stand 11 carries engine 14, and the face side of engine 14 is covered by hood 14a.As shown in Figure 4, this engine 14 has crank box 15 and cylinder head 16.Crank box 15 and cylinder head 16 is utilized to form engine main body 17.Crank box 15 utilizes bearing 19 rotatably to support crank axle 18.Crank axle 18 can rotate centered by axis X 1.Cylinder head 16 is provided with cylinder 20, can action ground plunger 21 in cylinder 20.In addition, the connecting rod 22 linking piston 21 and crank axle 18 is provided with.
Arm 23 is provided with in a side of engine main body 17.One end and the crank box 15 of arm 23 form, and are formed by nonferrous metal, such as magnesium.As shown in Fig. 3, Fig. 5 ~ Fig. 7, the blade 24 of circular plate shape is rotatably installed at the other end of arm 23.Blade 24 is metal rotating knifes.Engine main body 17 is installed clutch outer member 25, is provided with drive pulley 26 in the inside of clutch outer member 25.Drive pulley 26 is installed on the outer peripheral face of crank axle 18 by means of bearing 27, and drive pulley 26 relatively can rotate relative to crank axle 18.
Clutch 28 is provided with in clutch outer member 25.Clutch 28 is the mechanisms connecting or disconnect the power transfer path be formed between crank axle 18 and drive pulley 26.Clutch 28 comprises known centrifugal clutch, and below the rotary speed that the rotary speed of crank axle 18 is predetermined, liberation clutch 28, disconnects power transfer path.When the rotary speed of crank axle 18 exceedes predetermined rotary speed, clutch 28 coordinates, and connects power transfer path.
Be provided with a portion 29 at the free end of arm 23, utilize cylinder portion 29, by means of bearing 30 supports main shaft 31 revolvably.Blade 24 is fixed on main shaft 31, and blade 24 can with axis Y1 for rotation centerline be supported rotatably.Main shaft 31 is fixed follow-up pulley 33, the belt 34 of ring-type that drive pulley 26 and follow-up pulley 33 reel.
Recoil stator 35 is provided with the position of opposition side, position of configuration clutch outer member 25 on engine main body 17, along the direction of axis X 1.Recoil stator 35 has the pulley 36 being fixed on crank axle 18, and pulley 36 reels wirerope 37.At the end mounting rod 38 of wirerope 37, when operating personnel hold bar 38 and manually to draw wirerope 37 time, pulley 36 rotates, and pulley 36 and crank axle 18 rotate integrally.That is, crank axle 18 can be made tentatively to rotate.
On the other hand, main shaft 31 is installed blade 24, fastening construction bolt 39, pad 40 and be located at main shaft 31 outer peripheral face stage portion 41 between clamp pair of flanges 83.Pair of flanges 83 is all ring-types, clamps blade 24 between pair of flanges 83, and blade 24 is fixed on main shaft 31.That is, blade 24 can rotate integrally with main shaft 31, and blade 24 is fixed on the direction along axis Y1 relative to main shaft 31.
Follow-up pulley 33 utilizes construction bolt 42 to be fixed on main shaft 31, on the direction along axis Y1, configures cylinder portion 29 between follow-up pulley 33 and blade 24.In addition, the wheel protector 43 of a part for the circumferencial direction covering blade 24 is provided with.In Fig. 1 and Fig. 2 that wheel protector 43 looks engine cutting machine 10 main, Fig. 3 of backsight engine cutting machine 10, at the circumferencial direction centered by axis Y1, at the scopes covering blade 24 of about 180 degree.Wheel protector 43, in the backsight of engine cutting machine 10, covers than the scope of bolt 42 by the side of engine 14 at the circumferencial direction of blade 24.In addition, take turns protector 43 and cover blade 24 in the certain limit of the radial direction centered by axis Y1.Wheel protector 43 can circumferentially moving at blade 24 centered by axis Y1.
Wheel protector 43 is integrally formed by nonferrous metal, such as magnesium.Wheel protector 43 possesses the first side plate 44 in the both sides being configured at blade 24 along the direction of axis Y1 and the second side plate 45, connects the connecting plate 46 of the outer circumference end of the first side plate 44 and the outer circumference end of the second side plate 45.Connecting plate 46 is the circular shapes centered by axis Y1.Like this, blade 24 is being configured at along the direction of axis Y1 between the first side plate 44 and the second side plate 45.
Along the inner circumferential end fixed frame 47 of the second side plate 45, between frame 47 and arm 23, configure the first buffer 48 and the second buffer 49.Frame 47 is parts metal material being integrally formed as circular shape, and the first buffer 48 and the second buffer 49 are arranged on the direction along axis Y1.First buffer 48 and the second buffer 49 are all in the circular shape centered by axis Y1, and the first buffer 48 and the second buffer 49 are distinguished integrally formed by rubber-like elastic body.In addition, between the first buffer 48 and arm 23, configure the first plate 50 of circular shape, between the second buffer 49 and keeper 52, configure the second plate 51 of circular shape.
Arm 23 extends from the outer peripheral face in cylinder portion 29 along radial direction, in the direction along axis Y1, configures keeper 52 between arm 23 and blade 24.Keeper 52 is provided with along the direction of axis Y1 and the cylinder portion 52a outstanding near the direction of arm 23.First buffer 48 and the second buffer 49 are configured at an outside of portion 52a at the radial direction centered by axis Y1.Arm 23 is provided with the axis hole in the direction along axis Y1, the axle portion of set bolt on keeper 52.Axle portion is configured at axis hole, between the head and arm 23 of bolt, be provided with elastomeric element.
That is, keeper 52 utilizes arm 23 cannot be supported rotatably centered by axis Y1.Elastomeric element is metal Compress Spring, and keeper 52 is afterburning along axis Y1 on the direction near arm 23 by the power of elastomeric element.Therefore, frame 47 is clipped between arm 23 and keeper 52 by the first plate 50, second plate 51, first buffer 48, second buffer 49.Like this, the frictional force of the frictional force of the first plate 50 and the contact site of keeper 52 and the second plate 51 and the contact site of arm 23 as confining force, to be positioned in centered by axis Y1 circumferentially by wheel protector 43.
Mounting and adjusting bar 53 on wheel protector 43.As shown in Figure 3, adjusting lever 53 is circumferentially located at a place wheel protector 43, and adjusting lever 53 is arranged from the outer circumferential side of the second side plate 45 at whole continuous slab 46.Adjusting lever 53 utilizes bolt 54, nut 55 is fixed on the second side plate 45.Under the state of foot 11a, 11b ground connection, adjusting lever 53 is positioned at than arm 23 by the top.
As shown in Figure 5, adjusting lever 53 is given prominence to from the end face 45a of the second side plate 45 with overhang L1 on the direction along axis Y1.Adjusting lever 53 is the direction leaving the first side plate 44 from the end face 45a of the second side plate 45 along the direction that axis Y1 gives prominence to.In addition, as shown in Fig. 8 (A), (B), (C), be provided with edge part 23a at the two ends of the width of arm 23, between the end face 45a and edge part 23a of the second side plate 45, form the gap value L2 in the direction along axis Y1.Gap value L2 is less than overhang L1.
As shown in Fig. 8 (A), (B), (C) and Fig. 9, limiter 56 installed by the second side plate of wheel protector 43.Limiter 56 at the wheel protector 43 centered by axis Y1 circumferentially, is located at the position different from the position being provided with adjusting lever 53.Specifically describe, limiter 56, at the circumferencial direction of the wheel protector 43 centered by axis Y1, is located at the position leaving more than 90 degree from adjusting lever 53, specifically, is located at the position of the central symmetry of the circumferencial direction relative to wheel protector 43.Therefore, as shown in Figure 3, arm 23 is configured between adjusting lever 53 and limiter 56 at the circumferencial direction of the wheel protector 43 centered by axis L1.When foot's 11a, 11b ground connection, limiter 56 is positioned at than arm 23 on the lower in the side of blade 24.
The position contacted in limiter 56, with wheel protector 43, the position that contacts with arm 23 can by than taking turns protector 43 and low material, such as synthetic resin or the synthetic rubber etc. of arm 23 rigidity is formed.Synthetic resin such as comprises nylon.Synthetic rubber comprises macromolecular material, the such as ethylene propylene rubber, butyl rubber, thermoplastic elastomer etc. that possess caoutchouc elasticity.
Further, synthetic rubber can be utilized to be integrally formed limiter 56 overall, synthetic resin also can be utilized to be integrally formed the material of limiter 56 entirety.Or, synthetic resin and synthetic rubber both sides can be utilized to be construed as limiting the material of the entirety of device 56.In addition, limiter 56 can for imbedding the metal as reinforcement material in the inside of synthetic resin or synthetic rubber block.Limiter 56 makes three key elements, i.e. jut 57, contact site 58 integrated parts mutual with foot 59.Jut 57 is outstanding to the direction along axis Y1 relative to the end face 45a of the second side plate 45.Jut 57 exceedes gap value L2 relative to the overhang L3 of the end face 45a of the second side plate 45.Contact site 58 extends on the direction crossing with axis Y1, and, be quadrangle in overlooking.That is, contact site 58 extends on the direction of the surfaces of revolution along blade 24.The surfaces of revolution of blade 24 is planes vertical with axis Y1.
In addition, contact site 58, at the circumferencial direction of wheel protector 43, is arranged continuously with jut 57.Contact site 58 has the inclined plane 58a tilted relative to the end face 45a of the second side plate 45, and inclined plane 58a is different along the circumferencial direction of wheel protector 43 relative to the height L4 of the end face 45a of the second side plate 45.Inclined plane 58a is higher the closer to jut 57 relative to the height L4 of the end face 45a of the second side plate 45.The maximum of the height L4 of inclined plane 58a is less than the height L3 of jut 57, and larger than gap value L2.In addition, the minimum of a value of the height L4 of inclined plane 58a is less than gap value L2.In addition, on contact site 58, be provided with two hole 58b along the radial direction centered by axis Y1, contact site 58 forms three rib 58c.Inclined plane 58a is the upper surface of rib 58c.
Limiter 56 utilize multiple bolt 60,61,72, multiple nut 62,63,64 is fixed on the second side plate 45.Specifically describe, contact site 58 utilizes a bolt 72 and nut 62 to fix, and jut 57 utilizes two bolts 60 and two nuts 63 to fix, and foot 59 utilizes a bolt 61 and a nut 64 to fix.Jut 57 is provided with axis hole 65 and recess 66, in axis hole 65, configures the axle of bolt 60, in recess 66, configure the head of bolt 60.The head of bolt 60 does not expose from recess 66, and the height L5 from the end face 45a of the second side plate 45 to the upper end of the head of bolt 60 is less than overhang L3, and exceedes the maximum of height L4.In addition, the height L6 from the end face 45a of the second side plate 45 to the upper end of the head of bolt 72 is less than gap value L2.
The engine cutting machine 10 of present embodiment by operating personnel's action bars 38, and utilizes recoil stator 35 that crank axle 18 initial stage is rotated, to combustion chamber supply gaseous mixture, and fuel combustion, crank axle 18 automatic rotation of engine 14.Operating personnel, by operation throttling rod 12a, can adjust the rotary speed of crank axle 18, i.e. engine rotary speed.As long as clutch 28 engine rotary speed be regulation rotary speed below then discharge, can not by the power of crank axle 18, i.e. transmission of torque to drive pulley 26.Clutch 28 coordinates when engine rotary speed exceedes the rotary speed of regulation, by the transmission of torque of crank axle 18 to drive pulley 26.
The power of drive pulley 26 is delivered to follow-up pulley 33 by belt 34, and follow-up pulley 33 rotates.Therefore, main shaft 31 and blade 24 rotate together with follow-up pulley 33.Blade 24 is rotated clockwise in figure 3.Operating personnel makes the position do not covered by wheel protector 43 contact with object at the circumferencial direction of blade 24, performs the operation cutting off object, the operation etc. forming groove on object.When utilizing blade 24 workpiece, cutting off powder and dispersing, but contact with wheel protector 43 owing to cutting off powder, disperse to operating personnel therefore, it is possible to suppress to cut off powder.
In addition, operating personnel's operation adjustment bar 53, is applied on wheel protector 43 in a circumferential direction by the power of the detent force exceeding wheel protector 43, can change the holding position of wheel protector 43 relative to arm 23.That is, operating personnel according to the service condition of the size of the shape of object, object etc., engine cutting machine 10, at the circumferencial direction centered by axis Y1, can change the holding position of wheel protector 43 relative to arm 23.
On the other hand, in the use of engine cutting machine 10, in process that namely blade 24 is rotated clockwise in figure 3, when blade 24 is out of shape or breakage, the fragment of blade 24 contacts with wheel protector 43, when being applied above the power of detent force to wheel protector 43, wheel protector 43 is rotated clockwise in figure 3 centered by axis Y1.So the jut 57 of limiter 56 contacts with arm 23, wheel protector 43 stops.Therefore, it is possible to the angular range preventing wheel protector 43 from exceeding regulation with running counter to the intention of operating personnel rotates.
At this, according to Fig. 8 (A), (B), (C), the effect that the wheel protector 43 rotated stops is described.Limiter 56, before wheel protector 43 starts rotation, as shown in Fig. 8 (A), does not contact with arm 23.
When taking turns protector 43 and starting clockwise in figure 3 to rotate, limiter 56 is near arm 23, and as shown in Fig. 8 (B), between the edge part 23a of contact site 58 arm entry 23 and the second side plate 45, inclined plane 58a contacts with edge part 23a.Therefore, corresponding to the frictional force of the contact site of contact site 58 and arm 23 brake force is applied to takes turns on protector 43.The rotary speed of wheel protector 43 declines.
In addition, when taking turns protector 43 and continuing to rotate, contact site 58 elastic deformation, contact site 58 increases with the frictional force of the contact site of arm 23, and the rotary speed of wheel protector 43 is slowed down further.Afterwards, as shown in Fig. 8 (C), the jut 57 of limiter 56 contacts with the edge part 23a of arm 23, and wheel protector 43 stops at preposition.That is, produce reaction force F1 from edge part 23a to jut 57, utilize this reaction force F1, wheel protector 43 stops.The direction of reaction force F1 is parallel to the plane vertical with axis Y1, and, along the direction of the circumferencial direction of wheel protector 43.
Like this, in the moment that wheel protector 43 stops, inertia force F2 when wheel protector 43 rotates remains in the jut 57 of limiter 56.Inertia force F2 is parallel to the plane vertical with axis Y1, and the direction of the circumferencial direction of edge wheel protector 43, and, be the direction contrary with reaction force F1.Therefore, limiter 56 produces the component F3 in the direction poured into for fulcrum with the fixed position of the second side plate 45, limiter 56 is out of shape together with the position of stationary restraint 56 in wheel protector 43.In the side profile parallel with axis Y1, the direction of the component F3 that second side plate 45 of taking turns protector 43 will be out of shape is the direction crossing with reaction force F1.
Namely, in the second side plate, along direction of rotation than limiter 56 towards on the face of the side of the edge part 23a of arm 23, produce in the direction leaving blade 24 power mentioned, on the face of side leaving arm 23 than limiter 56, produce in the direction near blade 24 power fallen into.
In contrast, contact site 58 is the faces extended abreast with blade 24, extend in the direction crossing with the contact surface of edge part 23a relative to limiter 56.Contact site 58 is configured to contact with the edge part 23a of arm 23, therefore, when limiter 56 and the second side plate 45 are out of shape on the direction crossing with reaction force F1, contacted with contact site 58 by arm 23, arm 23 is subject to the component F3 transmitted from limiter 56 and the second side plate 45.
Therefore, it is possible to suppress the second side plate 45 of limiter 56 and wheel protector 43 at the Direction distortion crossing with reaction force F1.In addition, by relative to the bending moment acted on the bolt 60 of limiter 56, at least fixed by plural bolt 60, can disperse to be applied to the impact load on bolt 60.
Like this, the engine cutting machine 10 of present embodiment is rotating between withholding period from the wheel protector 43 stopped, and the contact site 58 of limiter 56 contacts with arm 23.Especially start to rotate to arm 23 and limiter 56 period of contact at trailing wheel protector 43, expect that the contact site 58 of limiter 56 contacts with arm 23.By this effect, engine cutting machine 10 can utilize the frictional force produced in contact site 58 and the contact site of arm 23 that the rotary speed of wheel protector 43 is slowed down.
That is, by the kinetic energy of wheel protector 43 is converted to frictional heat, brake force is applied to wheel protector 43.Therefore, the jut 57 of limiter 56 contacts with arm 23, can make as early as possible wheel protector 43 will stop before the rotary speed of wheel protector 43 become low speed.Therefore, when limiter 56 contacts with arm 23, can the impact load that is subject to of lower arm 23, suppress the vibration of engine cutting machine 10.In addition, the vibration of the hand being delivered to operating personnel by front handlebar 13 can be suppressed.
In addition, contact site 58 is provided with inclined plane 58a, the edge part 23a of arm 23 and the contact site of inclined plane 58a are with the mode displacement near jut 57, and the edge part 23a of arm 23 contacts with jut 57, and wheel protector 43 stops.Therefore, it is possible to the impact load that dispersion limiter 56 is subject to, stress is avoided to concentrate.
In addition, in limiter 56, when utilize synthetic rubber formed with arm 23 and take turns position that protector 43 contacts time, limiter 56 with take turns protector 43 and contact and elastic deformation.Therefore, energy preventing arm 23 or wheel protector 43 are out of shape.
In addition, limiter 56 and jut 57 have foot 59 continuously.Therefore, reinforcement protrusion portion 57, improves flexural rigidity and the intensity of jut 57.Therefore, when jut 57 contacts with the edge part 23a of arm 23, jut 57 can be suppressed to be out of shape due to impact load.
In addition, the head of bolt 60 exceedes gap value L2 relative to the height L5 of the end face 45a of the second side plate 45.Therefore, when jut 57 contacts with the edge part 23a of arm 23, a part for the load that can be withstood shocks by bolt 60.Therefore, jut 57 elastic deformation on the direction near foot 59 can be suppressed.
In addition, the head of bolt 72 is less than gap value L2 relative to the height L6 of the end face 45a of the second side plate 45.Therefore, can prevent after contact site 58 contacts with the edge part 23a of arm 23, the head of bolt 72 contacts with the edge part 23a of arm 23.
In addition, when the state contacted with arm 23 from limiter 56, operating personnel's operation adjustment bar 53, when wheel protector 43 is rotated counter-clockwise in figure 3, limiter 56 leaves arm 23.
Like this, the edge part 23a of limiter 56 and arm 23 has concurrently as the effect making wheel protector 43 stop at the limiting mechanism of preposition relative to arm 23 and the effect of distortion dampening mechanism of being out of shape as the component F3 suppressing wheel protector 43 due to the direction crossing with reaction force F1.
In addition, when taking turns protector 43 and vibrating, as long as becoming the position configuration limiter 56 of abdomen of vibration mode, just can the resonance point of regulating wheel protector 43.Therefore, it is possible to reduce the vibration of wheel protector 43.
Then, illustrates that other of the limiting mechanism being located at engine cutting machine 10 are routine with reference to Figure 10 ~ Figure 13 (A), (B).In the structure shown in Figure 10 ~ Figure 13 (A), (B), the structure identical with the structure shown in Fig. 1 ~ Fig. 9 marks the symbol identical with Fig. 1 ~ Fig. 9.Wheel protector arranges the first limiter 67, arm 23 arranges the second limiter 68.First limiter 67 and the second limiter 68 are formed by than wheel protector 43 and the low material of arm 23 rigidity.The material of the first limiter 67 and the second limiter 68 can be identical with the material of limiter 56.
First limiter 67 has cylindrical portion 67a, give prominence to contact site 67b into semi-spherical shape from the surface of cylindrical portion 67.First limiter 67 is in crossing with axis Y1 overlooking, and peripheral shape is circular.The center line of cylindrical portion 67a is parallel with axis Y1, contacts with the end face 45a of the second side plate 45 with the end face of the central axis of cylindrical portion 67a.In cylindrical portion 67a, centrally the height L7 in the direction of line is less than gap value L2.The height of circumferential part 67a is the overhang of cylindrical portion 67a relative to the end face 45a of the second side plate 45.Height L8 from the end face of the second side plate 45 to the front end of contact site 67b exceedes gap value L2.Height L8 is the height in the direction of center line along the first limiter 67.
First limiter 67 is fixed on the end face 45a of the second side plate 45 of wheel protector 43.First limiter 67 is at the circumferencial direction of the wheel protector 43 centered by axis Y1, and the allocation position be configured in apart from adjusting lever 53 is less than 180 degree and position more than 90 degree.First limiter 67 is fixed by bolt 69 and nut 70.First limiter 67 is adhered to the head of bolt 69.
Second limiter 68 is fixed on position opposed with the end face 45a of the second side plate 45 in arm 23.Second limiter 68, at the radial direction centered by axis Y1, is configured in circumferentially same with the first limiter 67.Second limiter 68 is in crossing with axis Y1 overlooking, and peripheral shape is circular.Second limiter 68 is fixed by bolt 71.Arm 23 is provided with negative thread, the outer screw section of bolt 71 is screwed into the negative thread of arm 23, the second limiter 68 is fixed on arm 23.
Second limiter 68 has cylindrical portion 68a and the contact site 68b given prominence to from the surface of cylindrical portion 68a as semi-spherical shape.The center line of cylindrical portion 68a is parallel with axis Y1, contacts with arm 23 with the end face of the central axis of cylindrical portion 68a.In cylindrical portion 68, centrally the height L7 in the direction of line is less than gap value L2.Height L8 from the end of arm 23 to the front end of contact site 68b exceedes gap value L2.Height L8 is the height in the direction of center line along the second limiter 68.
Represent that the height L8 of the size of the second limiter 68 is the values of the state that contact site 68b does not contact with the end face 45a of the second side plate 45.Therefore, when the second limiter 68 is fixed on arm 23, contact site 68b contacts with the end face 45a of the second side plate 45, and the second limiter 68 elastic deformation, contact site 68b is pressed by the end face 45a of the second side plate 45.In addition, represent that the height L7 of the size of the second limiter 68 is that contact site 68b contacts with the end face 45a of the second side plate 45, the value under the second limiter 68 elastic deformation.
In the engine cutting machine 10 with above-mentioned first limiter 67 and the second limiter 68, operating personnel applies operating physical force to adjusting lever 53, carry out the operating physical force needed for occasion of the operation that wheel protector 43 is rotated centered by axis Y1 than in Fig. 1 ~ engine cutting machine 10 illustrated in fig. 9, operating personnel applies operating physical force on adjusting lever 53, and the operating physical force needed for situation carrying out the operation that wheel protector 43 is rotated centered by axis Y1 is large.Its reason is, as shown in Figure 13 (A), the contact site 68b of the second limiter 68 contacts with the second side plate 45 of wheel protector 43, the second limiter 68 elastic deformation, thus contact site 68b is pressed by the second side plate 45.
In the use of engine cutting machine 10 with the first limiter 67 and the second limiter 68, namely blade 24 be rotated clockwise in Fig. 10 in process, when blade 24 be out of shape, damaged, the fragment of blade 24 contacts with wheel protector 43, when wheel protector 43 is applied above the power of detent force, wheel protector 43 is rotated clockwise in Fig. 10 centered by axis Y1.So the end face 45a of the second limiter 68 and the second side plate 45 rubs, due to the frictional force of the contact site of the end face 45a of the second limiter 68 and the second side plate 45, the rotary speed of wheel protector 43 declines.
In addition, when taking turns protector 43 and continuing clockwise in Fig. 10 to rotate centered by axis Y1, the cylindrical portion 67a of the first limiter 67 contacts with the edge part 23a of arm 23, the first limiter 67 elastic deformation.That is, with the frictional force of the contact site of the first limiter 67 and arm 23 correspondingly, the brake force be applied on wheel protector 43 increases.
Further, between the first limiter 67 arm entry 23 and the second side plate 45, as shown in Figure 13 (B), the outer peripheral face of cylindrical portion 67a contacts with the outer peripheral face of cylindrical portion 68a, and the second limiter 68 produces reaction force F1, and wheel protector 43 stops.Reaction force F1, in the plane vertical with axis Y1, is taking turns the circumferentially generation of protector 43.Therefore, the angular range that can prevent wheel protector 43 from exceeding regulation with running counter to the intention of operating personnel rotates.
In addition, when the outer peripheral face of circumferential part 67a and the outer peripheral face of cylindrical portion 68a collide, by taking turns the rotation of protector 43, the first limiter 67 produces inertia force F2.Inertia force F2 is reverse relative to reaction force F1.Therefore, on the first limiter 67, with the fixed position of the second side plate 45 for fulcrum produces the component F3 in the direction poured into together with the second side plate 45.In the side profile parallel with axis Y1, component F3 produces on the direction crossing with reaction force F1.
At this, cylindrical portion 67a contacts and elastic deformation with cylindrical portion 68a, is contacted with arm 23 by contact site 67b, and the end face of cylindrical portion 67a is arm 23, bears component F3 by arm 23.Therefore, the first limiter 67 and the second side plate 45 can be suppressed to be out of shape on the direction crossing with reaction force F1.
Like this, the engine cutting machine 10 of present embodiment is by starting to rotate between withholding period at the wheel protector 43 stopped, the contact site 67b with the face of intersecting with cylindrical portion 67a contacts with arm 23, suitably can suppress the revolving force produced by the contact of cylindrical portion 67a and cylindrical portion 68a.Especially expect that the contact site 67b of the first limiter 67 and arm 23 start to rotate to cylindrical portion 67a and contact with cylindrical portion 68a period of contact taking turns protector 43.
According to this effect, being applied to according to the brake force of the frictional force produced at the cylindrical portion 68a of the second limiter 68 and the contact site of the second side plate 45 and the brake force of frictional force that produces according to the contact site at the cylindrical portion 67a of the first limiter 67 and edge part 23a of arm 23 takes turns on protector 43, and the rotary speed of wheel protector 43 can be made to slow down.That is, by the kinetic energy of wheel protector 43 is converted to frictional heat, wheel protector 43 applies brake force.
Therefore, the cylindrical portion 67a of the first limiter 67 contacts with the cylindrical portion 68a of the second limiter 68, can make as far as possible wheel protector 43 will stop before the rotary speed of wheel protector 43 be low speed.Therefore, when the cylindrical portion 67a of the first limiter 67 contacts with the cylindrical portion 68a of the second limiter 68, can the impact load be applied on arm 23 be reduced, suppress the vibration of engine cutting machine 10.
In addition, because contact site 67b is hemispherical, therefore, it is possible to the impact load that dispersion the first limiter 67 is subject to, stress is avoided to concentrate.In addition, in the first limiter 67 and the second limiter 68, by synthetic rubber formed with arm 23 and take turns position that protector 43 contacts time, can preventing arm 23 or wheel protector 43 be out of shape.
Like this, the first limiter 67 has the effect of effect as the limiting mechanism making wheel protector 43 stop at preposition and the distortion dampening mechanism that suppresses the first limiter 67 to be out of shape due to component F3 concurrently.
In the structure of the first limiter 67 shown in Figure 11, the distance of the wheel upper surface of protector 43 and the bottom side portion of arm 23 is short, configures the second limiter 68 in its bottom side portion.Further, the second limiter 68 contacts due to the first limiter 67, and the bolt 69 therefore fixing the first limiter 67 can be one.In addition, bolt 69 and bolt 71 may not be configured to same circle-shaped, and the bolt 69 fixing with the first limiter 67 can be made to be two, and the second limiter 68 is by the central portion of two bolts 69.In this case, owing to can disperse to be applied to the impact load on the first limiter 67, therefore durability can be improved.
Then, the variation of Figure 10 ~ Figure 13 (A), the limiting mechanism shown in (B) is described with reference to Figure 14 (A), (B) and Figure 15 (A), (B).Second side plate 45 is installed the first limiter 77, arm 23 is installed the second limiter 78.The position that second side plate 45 is installed the first limiter 77 is identical with the position of installing the first limiter 67 on the second side plate 45.The position that arm 23 is installed the second limiter 78 is identical with the position of installing the second limiter 68 on arm 23.
First limiter 77 and the second limiter 78 are formed by than wheel protector 43 and the low material of arm 23 rigidity.The material of the first limiter 77 and the second limiter 78 can be identical with the material of the first limiter 56.First limiter 77 is ring-types, and the first limiter 77 is in crossing with axis Y1 overlooking, and peripheral shape is circular.The center line of the first limiter 77 is parallel with axis Y1, contacts with the end face 45a of the second side plate 45 with the end face of the central axis of the first limiter 77.As shown in Figure 14 (A), when the first limiter 77 and the second limiter 78 leave, in the first limiter 77, centrally the height L7 in the direction of line is less than gap value L2.The height of the first limiter 77 is the first limiter 77 overhangs relative to the end face 45a of the second side plate 45.
First limiter 77 is fixed on the end face 45a of the second side plate 45 of wheel protector 43.First limiter 77 is at the circumferencial direction of the wheel protector 43 centered by axis Y1, and the allocation position be configured in apart from adjusting lever 53 is less than 180 degree and position more than 90 degree.First limiter 77 is fixed by bolt 79 and nut 80.First limiter 77 is bonded in the head of bolt 79.
Second limiter 78 is fixed on position opposed with the end face 45a of the second side plate 45 in arm 23.Second limiter 78, at the radial direction centered by axis Y1, is configured at circumferentially same with the first limiter 77.Second limiter 78 is ring-types, and in crossing with axis Y1 overlooking, peripheral shape is circular.Second limiter 78 is fixed on nut 81.In addition, be provided with the bolt 82 being screwed into nut 81, fastening bolt 82, thus nut 81 is fixed on arm 23.That is, the second limiter 78 is fixed on arm 23 by nut.The center line of the second limiter 78 is parallel with axis Y1, contacts with arm 23 with the end face of the central axis of the second limiter 78.As shown in Figure 14 (A), when the first limiter 77 and the second limiter 78 leave, in the second limiter 78, centrally the height L7 in the direction of line is less than gap value L2.Height L7 is the overhang of the second limiter 78 relative to the end of arm 23.
On the other hand, when applying external force on wheel protector 43, when wheel protector 43 rotates centered by axis Y1, the first limiter 77 enters between the second side plate 45 and arm 23.Further, as shown in Figure 14 (B) and Figure 15 (A), the outer peripheral face 77a of the first limiter 77 and outer peripheral face 78a of the second limiter 78 collides, and the second limiter 78 produces reaction force F1.Reaction force F1 in the plane vertical with axis Y1, towards wheel protector 43 circumferencial direction.Like this, take turns protector 43 to stop at preposition relative to arm 23.
When the first limiter 77 and the second limiter 78 collide, the inertia force F2 of wheel protector 43 acts on the first limiter 77.The direction of inertia force F2 is contrary with the direction of reaction force F1.Therefore, on the first limiter 67, so that the first limiter 67 is fixed on the position of the second side plate 45 for fulcrum, produce the component F3 in the direction crossing with reaction force F1.Therefore, a part for the first limiter 77 and the second side plate 45 with the position the first limiter 67 being fixed on the second side plate 45 for fulcrum is poured into.
Relative to this, in the present embodiment, when the first limiter 77 and the second limiter 78 collide, first limiter 77 and the second limiter 78 elastic deformation or be crushed, as shown in Figure 15 (B), the end 77c of the first limiter 77 contacts with arm 23, and the second limiter 78 contacts with the second side plate 45.That is, the first limiter 77 is from the state of cantilever beam, is converted to the state utilizing arm 23 to support the both arms beam of free end side.End 77c is the direction along axis Y1, the opposition side, position be arranged in the first limiter 77, contacting with the second side plate 45.That is, when the first limiter 77 and the second limiter 78 collide, the height L7 of the first limiter 77 and height L7 of the second limiter 78 is larger than gap value L2.
Therefore, when the first limiter 77 and the second limiter 78 collide, arm 23 is subject to the first limiter 77 component F3 of pouring on the direction near the second limiter 78, therefore, effectively can suppress pouring into and the distortion of the second side plate 45 of the first limiter 77.Like this, when arranging the first limiter 77 and the second limiter 78, the effect of the distortion of can be inhibited the first limiter 77 and wheel protector 43.
In addition, the first limiter 77 and the second limiter 78 all can be formed concavo-convex with the impingement area of arm 23.In addition, the impingement area of the first limiter 77 and the second limiter 78 is with in the direction along axis L1, and the free end side of the first limiter 77 tilts near the mode of the second limiter 78, therefore, can suppress due to collision, the power of the second limiter 78 crossed by the first limiter 77.In addition, the mode that above-mentioned impingement area can leave the second limiter 78 along axis Y1 with the free end side of the first limiter 77 tilts.According to this structure, be difficult to the first limiter 77 when producing collision and the hook of the second limiter 78, easily revert to original position after an impact.
In addition, the embodiment of Figure 14 (A), (B) and Figure 15 (A), (B) is different from the embodiment illustrated with reference to Fig. 1 ~ Figure 13 (A), (B), before the first limiter 77 contacts with the second limiter 78, first limiter 77 can not be removed with arm 23, can not produce frictional force.In addition, before the first limiter 77 contacts with the second limiter 78, the second limiter 78 can not contact with wheel protector 43, can not produce frictional force.Therefore, at operating personnel's operation adjustment bar 53 during the turned position of regulating wheel protector 43, the operation that wheel protector 43 is rotated can not be hindered, the burden of operating personnel can be alleviated.
Like this, the first limiter 77 and arm 23 have concurrently as the effect of the limiting mechanism making wheel protector 43 stop at preposition and as the effect suppressing the first limiter 77 and the second side plate 45 in the distortion dampening mechanism of the Direction distortion of component F3.
When the corresponding relation of structure and the structure of the present utility model illustrated in the present embodiment is described, engine cutting machine 10 is equivalent to working rig of the present utility model, engine 14 is equivalent to power source of the present utility model, blade 24 is equivalent to throw of the present utility model, arm 23 is equivalent to support component of the present utility model, and wheel protector 43 is equivalent to protecting component of the present utility model.
In addition, possesses the arm 23 of edge part 23a, limiter 56, jut 57, first limiter 67, 77, second limiter 68, 78 are equivalent to limiting mechanism of the present utility model, possesses the limiter 56 of contact site 58, first limiter 67, 77 are equivalent to distortion dampening mechanism of the present utility model, contact site 58 is equivalent to contact site of the present utility model, possesses contact site 58, first limiter 67 of contact site 67b is equivalent to blocking mechanism of the present utility model, inclined plane 58a is equivalent to inclined plane of the present utility model, contact site 67b is equivalent to the first contact site of the present utility model, contact site 68b is equivalent to the second contact site of the present utility model.In addition, the keeper 52, arm 23, first buffer 48, second buffer 49, Compress Spring etc. that illustrate with reference to Fig. 5 and Fig. 6 are equivalent to maintaining body of the present utility model.In addition, axis Y1 is equivalent to rotation centerline of the present utility model, and the frictional force produced in the contact site of the contact site of limiter and protecting component, limiter and arm is equivalent to resistance of the present utility model.Blocking mechanism of the present utility model also can for the arrestment mechanism making the translational speed of protecting component slow down.In addition, main stand 11 is equivalent to working rig main body of the present utility model, crank axle 18 is equivalent to output shaft of the present utility model, drive pulley 26 is equivalent to drive pulley of the present utility model, main shaft 31 is equivalent to main shaft of the present utility model, follow-up pulley 33 is equivalent to follow-up pulley of the present utility model, and belt 34 is equivalent to belt of the present utility model.
In addition, in the example of Fig. 3, Fig. 8 (A), (B), (C), blocking mechanism of the present utility model and limiting mechanism are all located on protecting component, and blocking mechanism of the present utility model possesses inclined plane.On the other hand, in the example of Figure 10, Figure 13 (A), (B) ~ Figure 15 (A), (B), blocking mechanism of the present utility model is located at protecting component and support component both sides.In addition, in the example of Figure 10, Figure 13 (A), (B) ~ Figure 15 (A), (B), limiting mechanism of the present utility model is located at protecting component and support component both sides.
The utility model is not defined in above-mentioned embodiment, can carry out multiple change in the scope not departing from its purport.In addition, in the utility model, the engine as the power source transmitting power to throw comprises petrol engine, Diesel engine, liquefied natural gas engine etc.In addition, as the engine of power source can be 2 stroke 1 cycle engines, 4 strokes 1 circulate any one.
In the utility model, thermal power transfer is that kinetic energy produces except power except making fuel combustion by the power source transmitting power to throw, also comprises the electro-motor converting electrical energy into kinetic energy.In addition, the quantity of the fixed factors such as bolt, nut of stationary restraint can change arbitrarily.In addition, the shape, size etc. of limiter can change arbitrarily.In addition, the object processed by throw comprises timber, stainless steel, mild steel material, thin plate iron plate etc.
Utilizability in industry is as follows.
The utility model can be applicable to utilize the power of power source that throw is rotated, and utilizes throw to cut off the portable cutting machine of object.
Claims (15)
1. a portable cutting machine, is characterized in that,
Have:
Support the support component utilizing the throw of the dynamic rotation of power source;
Cover a part for the circumferencial direction of above-mentioned throw, and the protecting component of above-mentioned support component can be installed under the state of the circumferencial direction movement of above-mentioned throw;
When above-mentioned protecting component moves along the circumferencial direction of above-mentioned throw relative to above-mentioned support component, make the limiting mechanism that above-mentioned protecting component stops at preposition relative to above-mentioned support component; And
Suppress the distortion dampening mechanism that above-mentioned limiting mechanism is out of shape on the direction crossing with the direction of the power making above-mentioned protecting component stop.
2. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned distortion dampening mechanism possesses the contact site extended abreast with the surfaces of revolution of above-mentioned throw.
3. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned distortion dampening mechanism is located at above-mentioned protecting component.
4. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned distortion dampening mechanism is located at above-mentioned protecting component and above-mentioned support component both sides.
5. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned limiting mechanism is located at above-mentioned protecting component.
6. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned limiting mechanism is located at above-mentioned protecting component and above-mentioned support component both sides.
7. portable cutting machine according to claim 1, is characterized in that,
The material of above-mentioned limiting mechanism comprises synthetic resin or elastomeric at least one party.
8. portable cutting machine according to claim 1, is characterized in that,
The material of above-mentioned distortion dampening mechanism comprises synthetic resin or elastomeric at least one party.
9. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned distortion dampening mechanism and the above-mentioned limiting mechanism of being located at above-mentioned protecting component are integrated mutually.
10. portable cutting machine according to claim 1, is characterized in that,
Above-mentioned distortion dampening mechanism possesses blocking mechanism, this blocking mechanism at above-mentioned protecting component relative to above-mentioned support component circumferentially the moving of above-mentioned throw time produce resistance.
11. portable cutting machines according to claim 10, is characterized in that,
Above-mentioned blocking mechanism produces resistance with above-mentioned support component friction, and the inclined plane of end slope relative to above-mentioned protecting component,
Above-mentioned limiting mechanism possesses and contacts with above-mentioned support component and make the jut that above-mentioned protecting component stops.
12. portable cutting machines according to claim 10, is characterized in that,
Above-mentioned limiting mechanism comprises the first limiter being installed on above-mentioned protecting component and the second limiter being installed on above-mentioned support component,
Above-mentioned blocking mechanism comprises to be located at above-mentioned first limiter and to produce the first contact site of resistance with above-mentioned support component friction and be located at above-mentioned second limiter and produce the second contact site of resistance with above-mentioned protecting component friction.
13. portable cutting machines according to claim 1, is characterized in that,
Arrange and can not carry out relative to above-mentioned support component the maintaining body that keeps in the mode of the circumferentially movement of above-mentioned throw with above-mentioned protecting component,
Above-mentioned limiting mechanism, when the power of the confining force exceeding above-mentioned maintaining body is applied to above-mentioned protecting component and makes above-mentioned protecting component above-mentioned throw circumferentially mobile, makes above-mentioned protecting component stop.
14. portable cutting machines according to claim 1, is characterized in that,
Above-mentioned power source comprises makes fuel combustion and the engine producing power.
15. portable cutting machines according to claim 14, is characterized in that,
Be provided with:
Carry above-mentioned engine, and the working rig main body of above-mentioned support component is installed;
Be located at the drive pulley of the output shaft of above-mentioned engine;
Be located at above-mentioned support component, and the main shaft of above-mentioned throw is installed;
Be installed on the follow-up pulley of above-mentioned main shaft; And
Be wound in the belt of above-mentioned drive pulley and above-mentioned follow-up pulley.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014040091A JP6248705B2 (en) | 2014-03-03 | 2014-03-03 | Portable cutting machine |
| JP2014-040091 | 2014-03-03 |
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| Publication Number | Publication Date |
|---|---|
| CN204505573U true CN204505573U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520104575.8U Active CN204505573U (en) | 2014-03-03 | 2015-02-12 | Portable cutting machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6248705B2 (en) |
| CN (1) | CN204505573U (en) |
| DE (1) | DE202014105919U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109715329A (en) * | 2016-09-30 | 2019-05-03 | 工机控股株式会社 | Parting tool |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3620262A1 (en) * | 2018-09-10 | 2020-03-11 | Hilti Aktiengesellschaft | Hand-held abrasive cut-off machine |
| JP2023101211A (en) | 2022-01-07 | 2023-07-20 | 株式会社マキタ | Working machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3313589B2 (en) * | 1996-09-13 | 2002-08-12 | 小松ゼノア株式会社 | Hand cutter |
| JP3157699U (en) * | 2009-12-11 | 2010-02-25 | 株式会社マーナ | Door stopper |
| JP5579575B2 (en) * | 2010-11-02 | 2014-08-27 | 株式会社マキタ | Disc grinder |
| JP5760658B2 (en) * | 2011-04-29 | 2015-08-12 | 日立工機株式会社 | Portable work machine |
-
2014
- 2014-03-03 JP JP2014040091A patent/JP6248705B2/en active Active
- 2014-12-08 DE DE202014105919.9U patent/DE202014105919U1/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109715329A (en) * | 2016-09-30 | 2019-05-03 | 工机控股株式会社 | Parting tool |
| CN109715329B (en) * | 2016-09-30 | 2020-11-20 | 工机控股株式会社 | Cutting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015164769A (en) | 2015-09-17 |
| JP6248705B2 (en) | 2017-12-20 |
| DE202014105919U1 (en) | 2015-01-28 |
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Address after: Tokyo, Japan, Japan Patentee after: Machine holding company Address before: Tokyo, Japan, Japan Patentee before: Hitachi Koki Company Limited |
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