CN101786185A - Portable cutter - Google Patents
Portable cutter Download PDFInfo
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- CN101786185A CN101786185A CN201010105223A CN201010105223A CN101786185A CN 101786185 A CN101786185 A CN 101786185A CN 201010105223 A CN201010105223 A CN 201010105223A CN 201010105223 A CN201010105223 A CN 201010105223A CN 101786185 A CN101786185 A CN 101786185A
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- housing
- guard shield
- trigger
- locking member
- portable cutter
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Abstract
The invention provides a portable cutter which comprises a shell, a switch, a trigger, a protection shield and a locking element, wherein the shell is used for accommodating a motor and at least partial cutting sheets; the switch is arranged on the shell and used for controlling the motor to start and stop; the trigger is movably arranged on the shell and has an on-position for operably enabling the switch to start the motor and an off-position for enabling the switch to stop the motor; the protection shield is movably arranged on the shell and used for accommodating the partial cutting sheets; the locking element is movably arranged on the shell and can operably move between a first position for preventing the trigger from moving to the on-position from the off-position and a second position for allowing the trigger to move to the on-position from the off-position; and the locking element comprises an abutting part which is selectively abutted to the protection shield, the abutting part is abutted to the protection shield at the first position so as to restrict the protection shield from moving relative to the shell, therefore, the product security is improved.
Description
Technical field
The present invention relates to a kind of power tool, especially relate to a kind of portable cutter.
Background technology
Traditional cutting class instrument, especially electric circular saw generally includes a saw blade that is used for processing work, be used for driving the motor of this saw blade, the output shaft of motor is usually all perpendicular to saw blade, main handle is used for holding for the operator in operating process, main handle is vertical with motor to be provided with, this electric circular saw comprises a base plate, decide guard shield and a moving guard shield for one, decide guard shield and be positioned at the top of base plate, at any time saw blade top is closed at wherein, moving guard shield is positioned at below the base plate, and during work, thereby moving guard shield is because the pushing of workpiece can be exposed the saw blade bottom with respect to deciding the guard shield rotation.But the traditional electrical annular saw does not have mechanism will move the guard shield locking, usually can be because of causing unexpected injury because of carelessness.
Summary of the invention
Technical problem to be solved by this invention provides a kind of portable cutter of handling safety.
In order to address the above problem, to the invention provides a kind of portable cutter and comprise: housing is used for accommodating the motor that is used to drive the cutting blade motion and to the small part cutting blade; Be installed on the switch on the described housing, described switch is used to control described motor starting and stops; Be installed on the trigger on the described housing movably, described trigger has the on-position that operationally makes described switch activated motor and makes described switch stop the open position of motor; Movably be installed on guard shield on the described housing, described guard shield is used for the resettlement section and divides cutting blade, described guard shield is provided with the cutting blade through hole and is used for cutting blade and therefrom passes; Movably be installed on the locking member on the described housing, described locking member is exercisable to be moved preventing that described trigger from moving to the primary importance of on-position and allowing described trigger to move to from open position between the second place of on-position from open position; Described locking member comprises can select the butting section that leans with described guard shield, and in primary importance, described butting section and described guard shield lean and be used for limiting described guard shield and move with respect to described housing; In the second place, the disengagement of described butting section is moved with respect to described housing against the described guard shield of permission with described guard shield.
In disclosed portable cutter, locking member comprises can select the butting section that leans with guard shield, make when locking member during in primary importance, just trigger is in open position, butting section and guard shield lean and have limited guard shield moving with respect to housing, so can prevent maloperation, improve the security of portable cutter.
Preferred implementation of the present invention is also following several:
Preferably, described housing comprises the housing front portion and the housing rear portion that is used for accommodating described motor that is used for accommodating to the small part cutting blade, described shield encompasses residence is stated the housing front portion and is had top edge, in primary importance, described butting section and described top edge lean and are used to limit moving of described guard shield.
Preferably, anterior among both one of described guard shield and housing is provided with arc-shaped guide rail, and another among both is provided with the mating part, and described mating part cooperates with described arc-shaped guide rail to move along described arc-shaped guide rail moves described guard shield.
Preferably, described arc-shaped guide rail is the arc groove that is arranged on the guard shield inner surface, and described mating part is the projection that is arranged on the housing forward outer surface.
Preferably, be provided with spring between described locking member and described housing, described spring is pushed described locking member to described primary importance.
Preferably, described locking member comprises the stopper section, and described trigger is provided with the limited block that matches with described stopper section, and in primary importance, described stopper section cooperates with described limited block and is used for limiting described trigger and rotates with respect to described housing; In the second place, the disengagement of described stopper section is rotated with respect to described housing with allowing described trigger cooperating of described limited block.
Preferably, described locking member is installed on the described housing pivotly.
Preferably, described limited block is the projection with first step face, described stopper section is the boss with second step face, and in primary importance, the first step face of described projection cooperates with the second step face of described boss and is used for limiting described trigger and rotates with respect to described housing; In the second place, the first step emaciated face of described projection is opened and the cooperating of second step face of described boss is allowed described trigger to rotate with respect to described housing.
Preferably, described locking member is slidably mounted on the described housing.Wherein said locking member is provided with gathering sill, and described housing is provided with guide pad, and described gathering sill cooperates with described guide pad to move along described guide pad makes described locking member slide between the primary importance and the second place.
Preferably, described limited block is the gusset that is arranged on the trigger, described locking member is provided with the groove that is used for accommodating in the second place described gusset, and in primary importance, described stopper section cooperates with described gusset and is used for limiting described trigger and rotates with respect to described housing; In the second place, thereby described gusset is thrown off and the cooperating and can be contained in described groove and allow described trigger to rotate with respect to described housing of described stopper section.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further detailed description.
Fig. 1 is the stereogram of the portable cutter that first embodiment of the invention disclosed.
Plane when Fig. 2 does not install guard shield for the portable cutter that Fig. 1 disclosed.
Cut-away view when Fig. 3 does not install guard shield for the portable cutter that Fig. 1 disclosed.
Fig. 4 is the stereogram of the guard shield of the portable cutter that Fig. 1 disclosed.
The stereogram that Fig. 5 sees from another angle for the guard shield among Fig. 4.
Fig. 6 is the stereogram of portable cutter when saw blade exposes guard shield that Fig. 1 disclosed.
Fig. 7 is the three-dimensional exploded view of the portable cutter that Fig. 1 disclosed.
The stereogram of seeing from opposite side when Fig. 8 does not install guard shield for the portable cutter that Fig. 1 disclosed.
Fig. 9 is portable cutter that Fig. 7 the disclosed partial enlarged drawing at the A place.
Figure 10 is portable cutter that Fig. 1 the disclosed stereogram when the position that spanner is in out.
Figure 11 is the stereogram of the stop block of the portable cutter that Figure 10 disclosed.
Cut-away view when Figure 12 is opened for portable cutter that Fig. 1 disclosed is equipped with guard shield and gear-box.
Part three-dimensional exploded view when Figure 13 is opened for the housing of the portable cutter that Fig. 1 disclosed.
Figure 14 is the part cut-away view of the portable cutter that Figure 13 disclosed, this moment locking member throw off with guard shield against.
Figure 15 is for the part cut-away view of the portable cutter that Figure 13 disclosed, this moment, locking member and guard shield leant.
Part three-dimensional exploded view when Figure 16 is opened for the housing of the portable cutter that second embodiment of the invention disclosed.
Figure 17 is the part cut-away view of the portable cutter that Figure 16 disclosed, this moment locking member throw off with guard shield against.
Figure 18 is for the part cut-away view of the portable cutter that Figure 16 disclosed, this moment, locking member and guard shield leant.
Among the figure:
40. portable cutter 42. housings 44. housing front portions
46. housing rear portion 47. first ends, 48. second ends
X. the angle of anterior longitudinally extending axis a.X of housing rear portion longitudinally extending axis Y. housing and Y
The line line
49. power line 50. saw blades 51. motors
52. motor output shaft 53. fans 54. electric machine supports
55. trigger 56. wind holes 57. gear-boxes
58. gear box casing 59. gear transmission mechanisms 60. guard shields
61. guard shield bottom 62a-d. guard shield sidewall 63. saw blade through holes
64. cavity 65. upper edge 66. top edges
70a-d. arc groove 72a-d. housing sidewall 74. sphericals
76. pin 78. groove 78a. hemispherical groove
78b. cylindrical recesses 80. depth adjustment 82. stopper
84. substrate 86. upper surfaces 88. protruded stigmas
90. pin 92. spanners 94. operating portions
96. connecting portion 98. cam bits 100. through holes
102. cam surface 104. lug bosses 106. pointers
108. arc opening 110. scale values 112. fixed parts
114. instruction unit 116. connecting portions 118. first cam surfaces
120. second cam surface, 122. stop surfaces, 130. resilience mechanisms
132. helical spring 134. pins 136. pilot holes
138. diameter is than small end 140. spheric ends 200. locking members
202. side plate 204.U shape opening 206. pillars
210. clamping block 212. gussets 214. main bodys
216. butting section 218. connecting portions, 220. operating portions
222. gathering sill 224. guide pads 226. abutment faces
228. spring accepting hole 230. springs 232. stopper slots
234. stopper section 236. grooves, 255. triggers
260. locking member 262. side plate 264.U shape openings
266. pillar 268. projections 270. main bodys
272. butting section 274. connecting portions, 276. operating portions
278. pivotal axis 280. abutment faces 282 torsion springs
284. boss
The specific embodiment
Embodiment one
With reference to Fig. 1, a kind of portable cutter 40 comprises housing 42, and this housing 42 comprises housing anterior 44 and housing rear portion 46.Housing 42 can be a moulding, and can be made of two and half shells.Housing anterior 44 and housing rear portion 46 can be integrally formed also can be two parts that link together. housing rear portion 46 comprises first end 47 and second end 48, first end 47 and anterior 44 adjacency of housing, second end 48 is away from housing anterior 44 and be connected with power line 49 usually.
With reference to Fig. 2, housing rear portion 46 roughly extends straight, the longitudinal extending axis at housing rear portion 46 is X, extend from first end, 47 relative housing rear portion 46 bendings at housing rear portion 46 housing front portion 44, the longitudinal extending axis of housing front portion 44 is Y, the angle a of the longitudinal extending axis X at the longitudinal extending axis Y of housing front portion 44 and housing rear portion 46 is more than or equal to 90 degree, and angle a is greater than 90 degree in the present embodiment.
Housing rear portion 46 is simultaneously also as operator's handle usefulness, and the operator holds housing rear portion 46 with mobile portable cutting machine 40 in operating process.Can be provided with encapsulate on this housing rear portion 46 so that the operator grip pleasant, thereby reduce fatigue.
With reference to Fig. 3, portable cutter 40 comprise be used for processing work saw blade 50 and be used for driving the motor of this saw blade 50, motor is a motor 51 in the present embodiment, motor herein also can be hydraulic pressure or pneumatic certainly.Motor 51 is contained in the housing rear portion 46, thereby motor 51 can be connected on the AC power (not shown) with power line 49 electric connections, and motor 51 also can be to power by dc-battery certainly.Portable cutter 40 also comprises the switch (not label) that electrically connects with motor 51, and this switch is installed on housing rear portion 46 and is used to control motor 51 and starts and stop.
First end, 47 places that motor 51 closes on housing rear portion 46 are provided with motor output shaft 52, and fan 53 is installed on the motor output shaft 52, and motor 51 closes on 46 second ends, 48 places, housing rear portion and is provided with electric machine support 54 and is used for motor 51 is supported in housing rear portion 46.On the housing rear portion 46 near first end 47 be equipped with wind hole 56 near second end, 48 places and be used for cooling motor 51.
The saw blade plane almost parallel of motor output shaft 52 and saw blade 50 is used for transmission of power to the saw blade 50 of motor 51 is driven saw blades 50 motions thereby be provided with transmission mechanism between motor output shaft 52 and saw blade 50.In the present embodiment, transmission mechanism is a gear-box 57, gear-box 57 comprises gear box casing 58 and gear transmission mechanism 59 (with reference to Figure 12), gear transmission mechanism 59 can be the worm and gear transmission, also can be Bevel Gear Transmission, in the present embodiment, gear transmission mechanism be worm and gear transmission (with reference to Figure 12), gear-box 57 is contained in housing front portion 44, and the top of saw blade 50 is contained in housing front portion 44.
With reference to Fig. 1, Fig. 4 and Fig. 5, portable cutter 40 comprises guard shield 60, guard shield 60 around surround housing front portion 44, guard shield 60 comprises guard shield bottom 61, guard shield bottom 61 contacts with surface of the work in the course of work, four guard shield sidewall 62a-d surround and extend upward from guard shield bottom 61 in a week, guard shield bottom 61 is provided with saw blade through hole 63, saw blade through hole 63 is used to make saw blade 50 therefrom to pass, cavitys 64 are formed on four guard shield sidewall 62a-d and guard shield bottom 61, and cavity 64 is used for the bottom of case anterior 44 and saw blade 50.Guard shield sidewall 62a comprises a upper edge 65, and the upper edge 65 of sidewall 62a is a limit away from guard shield bottom 61.Guard shield sidewall 62c comprises a top edge 66, and the top edge 66 of sidewall 62c is that the concrete effect of upper edge 65 and top edge 66 can be described in detail in the back away from a limit of guard shield bottom 61.
With reference to Fig. 1 and Fig. 6, be connected with the mating part (about arc track and mating part by arc-shaped guide rail between guard shield 60 and the housing front portion 44, the back can be described in detail), arc-shaped guide rail is located on anterior among both one of guard shield and housing, and the mating part is located on anterior among both another of guard shield and housing.The mating part cooperates with arc-shaped guide rail and can move along arc-shaped guide rail.The mating part is moved along arc-shaped guide rail and is made guard shield 60 relative housing front portions 44 movably from the primary importance to the second place, when guard shield 60 is positioned at primary importance, saw blade 50 does not expose (with reference to Fig. 1) from saw blade through hole 63, when guard shield 60 is positioned at the second place, saw blade 50 is to the exposing from saw blade through hole 63 of small part (with reference to Fig. 6), at this moment, electric circular saw 50 can be used to processing work.
With further reference to Fig. 4 and Fig. 5, guard shield sidewall 62a and 62b be over against setting, and guard shield sidewall 62c and 62d be over against setting, and when guard shield 60 is installed on the housing front portion 44, guard shield sidewall 62a and 62b and saw blade 50 almost parallels, and be positioned at the both sides of saw blade 50.In the present embodiment, arc-shaped guide rail is the arc groove 70a that is located on the inner surface of guard shield sidewall 62a, 70b and be located at arc groove 70c on the inner surface of guard shield sidewall 62b, 70d.Arc groove 70a-d roughly extends obliquely from guard shield bottom 61.Arc groove 70a-d is provided with at interval along the circumferential direction of guard shield sidewall 62a and 62b inner surface.The center of circle corresponding with the circular arc at arc groove 70b place, the center of circle of the circular arc correspondence at arc groove 70a place is roughly the same center of circle.The center of circle corresponding with the circular arc at arc groove 70d place, the center of circle of the circular arc correspondence at arc groove 70c place is roughly the same center of circle.
With reference to Fig. 7, Fig. 8 and Fig. 9, housing front portion 44 comprises four housing sidewall 72a-d, respectively with the corresponding cooperation of four guard shield sidewall 62a-d of guard shield 60, in the present embodiment, the mating part is located on the outer surface of housing sidewall 72a and 72b and with arc groove 70a-d and is cooperated.The mating part is generally projection, and projection is contained in the arc groove 70a-d and can moves within it.
In the present embodiment, the mating part comprises spherical 74, the center of spherical 74 is provided with through hole, pin 76 passes through hole, the two ends of pin 76 are exposed to through hole, cooperating between the through hole of pin 76 and spherical 74 is matched in clearance, thereby make spherical 74 to rotate around pin 76, sidewall 72a and 72b are provided with the groove 78 that is used for accommodating the mating part, the mid portion of groove 78 is hemispherical groove 78a, what be used for part accommodates spherical 74, and the two ends of groove 78 are provided with the cylindrical recesses 78b that is complementary with the two ends shape of exposing the pin 76 of through hole.Being contained in the hemispherical groove 78a of spherical 74 parts, the two ends of pin 76 are contained in the cylindrical recesses 78b, between spherical 74 and the hemispherical groove 78a certain clearance are arranged, and this docked mode makes spherical 74 to rotate in hemispherical groove 78a.In the present embodiment, be interference fit between the two ends of pin 76 and the cylindrical recesses 78b, thereby make that whole mating part can not be easy to fall down from housing front portion 44.
Certainly can be to fixedly connected between pin 76 and the spherical 74, and can be matched in clearance also between the two ends of pin 76 and the cylindrical recesses 78b, make pin 76 and spherical 74 rotate together.
With reference to Figure 10 and Figure 11, portable cutter comprises that depth adjustment 80 is used for regulating depth of cut, and depth adjustment 80 comprises stopper 82, and stopper 82 movably is installed on the anterior sidewall 72a of housing.
Stop block 82 comprises substrate 84, and substrate 84 comprises upper surface 86, and substrate 84 upper surfaces 86 are provided with a upwardly extending protruded stigma 88, is equipped with a pin 90 at the place, middle part of protruded stigma 88 perpendicular to protruded stigma 88.Spanner 92 pivotable being connected in the substrate 84, spanner 92 comprises operating portion 94 and connecting portion 96.Operating portion 94 is used for making the operator to control with hand when accent is dark, and connecting portion 96 is pivotally connected with spanner 92 and substrate 84.Connecting portion 96 comprises two corresponding cam bits 98 that are provided with, and the place is provided with through hole 100 and is used for accommodating pin 90 in the middle of the cam bit 98, thereby makes spanner 92 around pin 90 rotations.Cam bit 98 has cam surface 102.
With protruded stigma 88 a distance separately, be provided with a lug boss 104, extend upward from substrate 84 upper surfaces 86 with protruded stigma 88 the same lug bosses 104, be fixedly coupled a pointer 106 on the lug boss 104, pointer 106 is used to refer to the degree of depth of setting.
The cam surface of being located on the spanner 92 102 contacts with sidewall 72a outer surface.Cam surface 102 comprises first cam surface 118 and second cam surface 120.When first cam surface 118 contacted with sidewall 72a outer surface, spanner 92 was in released state, and this moment, stop block 82 can move along arc opening 108.When second cam surface 120 contacted with sidewall 72a outer surface, spanner 92 was in locking state, and this moment, stop block 82 was fixed with respect to sidewall 72a, and stop block 82 is not removable with respect to arc opening 108.Spanner 92 comprises stop face 122.
In the work, when needing to regulate the degree of depth, lift spanner 92 earlier, the position that spanner 92 is in out, this moment, first cam surface 118 contacted with sidewall 72a outer surface, along arc opening 108 slip stop blocks 82, made pointer 106 point to the deep calibration value 110 that needs.After having set up the degree of depth, depress spanner 92, make spanner 92 be in the position of closing, this moment, second cam surface 120 contacted with sidewall 72a outer surface, and this moment, stop block 82 was locked in a certain position of arc opening 108.During cut workpiece, being pressed on the surface of the work of guard shield bottom 61 parts, the operator holds housing rear portion 46, and impose on 46 1 pressure in housing rear portion, this moment, housing 42 relative guard shields 60 were along arcuate movement, upper edge 55 until guard shield 60 contacts with the stop face 122 of spanner 92, exposes the saw blade 50 of the certain depth of guard shield 60 and just can process.
With reference to Figure 12, portable cutter 40 comprises resilience mechanism 130, and this resilience mechanism 130 is used to make the relative housing of guard shield 60 42 to move to primary importance from the second place.In the present embodiment, resilience mechanism 130 comprises helical spring 132 and pin 134.Gear box casing 58 is provided with pilot hole 136 and is used for accommodating helical spring 132 and part pin 134.One end of helical spring 132 props up gear box casing 58, pin 134 comprises that a diameter is than small end 138 and a spheric end 140, diameter is than being arranged with helical spring 132 on the small end 138, spheric end 140 is against guard shield bottom 61, and helical spring 132 compresses power for 134 1 on pin towards the direction of guard shield bottom 61.Because pin 134 has a spheric end 140, this spheric end 140 contacts with guard shield bottom 61, when helical spring 132 compresses pin 134, the power of compressing that the spheric end 140 of pin 134 puts on guard shield bottom 61 remains the direction perpendicular to guard shield, can compare firm like this and is not easy to make pin 134 to block.
Join Figure 13 again, Figure 14 and Figure 15, portable cutter comprises a locking member 200 that is installed in housing rear portion 46 movably, and this locking member 200 operationally moves preventing that trigger 55 from moving to the primary importance of on-position and allowing trigger 55 to move to from open position between the second place of on-position from open position.
Locking member 200 is mobilizable to be installed in housing rear portion 46 and 55 U-shaped opening 204 passes to small part from trigger, the size of this U-shaped opening 204 makes that locking member 200 trigger 55 relatively moves freely after locking member 200 is installed on the housing rear portion 46.
In the present embodiment, locking member 200 slidably is installed on housing rear portion 46.Locking member 200 roughly takes the shape of the letter U, U-shaped locking member 200 comprises main body 214, the butting section 216 that is connected with main body 214 1 ends and roughly is arranged on the connecting portion 218 of main body 214 centres, wherein main body 214 to small part is hidden by trigger 55, forming between butting section 216 and the connecting portion 218 can be for the U-shaped operating portion 220 of operator's operation, and this U-shaped operating portion 220 is darted at the outside of trigger 55 so that operator's operation.The monosymmetric gathering sill 222 that is provided with of main body 214, housing rear portion 46 is provided with guide pad 224, moves along guide pad 224 by gathering sill 222 to make locking member 200 move between the primary importance and the second place relative to housing 42.
The butting section 216 of locking member 200 selectively leans with the top edge 66 of guard shield 60, and in the present embodiment, butting section 216 comprises selectively the abutment face 226 that leans with top edge 66.In primary importance, the top edge 66 of abutment face 226 and guard shield 60 leans and is used for limiting guard shield 60 and moves with respect to housing front portion 44; In the second place, abutment face 226 throw off with the top edge 66 of guard shield 60 against allowing guard shield 60 to move with respect to housing front portion 44.
Main body 614 is provided with spring accepting hole 228, be provided with spring 230 in the spring accepting hole 228, one end of spring 230 is against the inwall of main body 214, the other end of spring 230 is resisted against on the guide pad 224 of housing 42, spring 230 compresses power for 200 1 of locking members towards the direction of guard shield 60, thereby impels locking member 200 to be in primary importance.
The other end of main body 214 is provided with stopper section 234 and groove 236, and this stopper section 234 selectively cooperates with the gusset 212 of trigger 55, and groove 236 can be accommodated gusset 212.When locking member 200 is in primary importance, stopper section 234 cooperates with the gusset 212 of trigger 55 and is used for limit trigger 55 and moves to on-position from open position; When locking member 200 was in the second place, the gusset 212 of trigger 55 was positioned at relative with groove 236, made plate machine 55 to move to on-position from open position.
During work, the operating portion 220 of operational lock element 200 along guide pad 224 slide lock elements 200, makes locking member 200 move to the second place from primary importance, with reference to Figure 14, abutment face 226 is thrown off and the cooperating of top edge 66 of guard shield is made guard shield 60 move with respect to housing front portion 44 at this moment; The groove 236 of while locking member 200 moves to gusset 212 relative positions with trigger 55, thereby at this moment just can operating trigger 55 make it move to on-position and impel switch activated motor from open position, portable cutter just can be used to processing work, so only need operational lock element 200, just can make guard shield 60 and trigger 55 releases simultaneously, operation is very easy.And behind end-of-job, unclamp trigger 55, trigger 55 is pivoted to open position, and at this moment locking member 200 is returned to primary importance under the effect of the spring force of spring 230, with reference to Figure 15, guard shield 60 moves with respect to housing front portion 44 thereby abutment face 226 matches prevention with the top edge 66 of guard shield; Thereby match with the gusset 212 of trigger 55 and stop trigger 55 to pivot in the stopper section 234 of locking member 200 simultaneously, so can prevent maloperation, improves the security of portable cutter.
Embodiment two
Refer again to Figure 16, Figure 17 and Figure 18, present embodiment and embodiment one are basic identical, and different is that portable cutter comprises trigger 255 and locking member 260.
Locking member 260 passes from the U-shaped opening 264 of trigger 255, and the size of this U-shaped opening 264 makes that locking member 260 trigger 255 relatively moves freely after locking member 260 is installed on the housing rear portion 46.
In the present embodiment, locking member 260 is installed on housing rear portion 46 pivotly.Butting sections 272 that locking member 260 comprises main body 270, extended downwards by main body 270 and forms operating portion 276 so that the operator operates by the outside that a part is darted at trigger 255 at least by main body 270 upwardly extending connecting portion 274. main bodys 270.Connecting portion 274 is provided with pivotal axis 278, and housing rear portion 46 is provided with accepting hole (not shown) and accommodates pivotal axis 278, thereby makes locking member 260 to be rotatably installed on the housing rear portion 46 by this pivotal axis 278.
The butting section 272 of locking member 260 selectively leans with the top edge 66 of guard shield 60, and in the present embodiment, butting section 272 comprises selectively the abutment face 280 that leans with top edge 66.In primary importance, the top edge 66 of abutment face 280 and guard shield 60 leans and is used for limiting guard shield 60 and moves with respect to housing front portion 44; In the second place, abutment face 280 throw off with the top edge 66 of guard shield 60 against allowing guard shield 60 to move with respect to housing front portion 44.
On pivotal axis 278, also be arranged with torsion spring 282,282 1 ends of torsion spring are resisted against on the housing rear portion 46,282 the other end of torsion spring is resisted against on the locking member 260,282 directions towards guard shield 60 of torsion spring compress power to 260 1 of locking members, thereby impel locking member 260 to be in primary importance.
During work, the operating portion 276 of operational lock element 260 makes locking member 260 be pivoted to the second place from primary importance, and abutment face 280 was thrown off and the cooperating of top edge 66 of guard shield made guard shield 60 move with respect to housing front portion 44 this moment; Simultaneously because the pivot of locking member 260 is opened with the first step face of projection 268 the second step emaciated face of boss 284 cooperates, at this moment just can make it move to on-position by operating trigger 255 from open position, thereby impel switch activated motor, as shown in figure 17, trigger 255 has moved to on-position, and at this moment portable cutter just can be used to processing work.And behind end-of-job, unclamp trigger 255, trigger 255 is pivoted to open position, at this moment locking member 260 is returned to primary importance under the effect of the spring force of torsion spring 282, as shown in figure 18, thus abutment face 280 matches with the top edge 66 of guard shield and stops guard shield 60 to move with respect to housing front portion 44; Thereby the first step face of projection 268 cooperates with the second step face of boss 284 and stops trigger 255 pivots simultaneously.
Embodiment three
Present embodiment and embodiment one basic identical (not shown), different is that arc-shaped guide rail is an arc groove, the mating part is a cylindrical rollers.Arc groove is located among both one of the anterior outer wall of housing or guard shield inwall, among both another of anterior outer wall of housing or guard shield inwall is provided with cylindric roller, the shape of this arc groove and the shape of cylindrical rollers are complementary, be used for partly accommodating described cylindrical rollers, and make this cylindrical rollers in this arc groove, to roll.
Embodiment four
Present embodiment and embodiment one basic identical (not shown), different is that described arc-shaped guide rail is the arc gusset, described mating part is a groove, this arc gusset can be to the described groove of being contained in of small part and movably with this groove fit.
Claims (11)
1. portable cutter comprises:
Housing is used for accommodating the motor that is used to drive the cutting blade motion and to the small part cutting blade;
Be installed on the switch on the described housing, described switch is used to control described motor starting and stops;
Be installed on the trigger on the described housing movably, described trigger has the on-position that operationally makes described switch activated motor and makes described switch stop the open position of motor;
Movably be installed on guard shield on the described housing, described guard shield is used for the resettlement section and divides cutting blade, described guard shield is provided with the cutting blade through hole and is used for cutting blade and therefrom passes;
Movably be installed on the locking member on the described housing, described locking member is exercisable to be moved preventing that described trigger from moving to the primary importance of on-position and allowing described trigger to move to from open position between the second place of on-position from open position;
It is characterized in that: described locking member comprises can select the butting section that leans with described guard shield, and in primary importance, described butting section and described guard shield lean and be used for limiting described guard shield and move with respect to described housing; In the second place, the disengagement of described butting section is moved with respect to described housing against the described guard shield of permission with described guard shield.
2. portable cutter according to claim 1, it is characterized in that: described housing comprises the housing front portion and the housing rear portion that is used for accommodating described motor that is used for accommodating to the small part cutting blade, described shield encompasses residence is stated the housing front portion and is had top edge, in primary importance, described butting section and described top edge lean and are used to limit moving of described guard shield.
3. portable cutter according to claim 2, it is characterized in that: anterior among both one of described guard shield and housing is provided with arc-shaped guide rail, among both another is provided with the mating part, and described mating part cooperates with described arc-shaped guide rail to move along described arc-shaped guide rail moves described guard shield.
4. portable cutter according to claim 3 is characterized in that: described arc-shaped guide rail is the arc groove that is arranged on the guard shield inner surface, and described mating part is the projection that is arranged on the housing forward outer surface.
5. portable cutter according to claim 1 is characterized in that: be provided with spring between described locking member and described housing, described spring is pushed described locking member to described primary importance.
6. portable cutter according to claim 1 or 5, it is characterized in that: described locking member comprises the stopper section, described trigger is provided with the limited block that matches with described stopper section, in primary importance, described stopper section cooperates with described limited block and is used for limiting described trigger and rotates with respect to described housing; In the second place, the disengagement of described stopper section is rotated with respect to described housing with allowing described trigger cooperating of described limited block.
7. portable cutter according to claim 6 is characterized in that: described locking member is installed on the described housing pivotly.
8. portable cutter according to claim 7, it is characterized in that: described limited block is the projection with first step face, described stopper section is the boss with second step face, in primary importance, the first step face of described projection cooperates with the second step face of described boss and is used for limiting described trigger and rotates with respect to described housing; In the second place, the first step emaciated face of described projection is opened and the cooperating of second step face of described boss is allowed described trigger to rotate with respect to described housing.
9. portable cutter according to claim 6 is characterized in that: described locking member is slidably mounted on the described housing.
10. portable cutter according to claim 9, it is characterized in that: described locking member is provided with gathering sill, described housing is provided with guide pad, and described gathering sill cooperates with described guide pad to move along described guide pad makes described locking member slide between the primary importance and the second place.
11. portable cutter according to claim 10, it is characterized in that: described limited block is the gusset that is arranged on the trigger, described locking member is provided with the groove that is used for accommodating in the second place described gusset, in primary importance, described stopper section cooperates with described gusset and is used for limiting described trigger and rotates with respect to described housing; In the second place, thereby described gusset is thrown off and the cooperating and can be contained in described groove and allow described trigger to rotate with respect to described housing of described stopper section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101052236A CN101786185B (en) | 2009-01-22 | 2010-01-22 | Portable cutter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910028954.2 | 2009-01-22 | ||
| CN200910028954 | 2009-01-22 | ||
| CN2010101052236A CN101786185B (en) | 2009-01-22 | 2010-01-22 | Portable cutter |
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| Publication Number | Publication Date |
|---|---|
| CN101786185A true CN101786185A (en) | 2010-07-28 |
| CN101786185B CN101786185B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101052236A Active CN101786185B (en) | 2009-01-22 | 2010-01-22 | Portable cutter |
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| Country | Link |
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| CN (1) | CN101786185B (en) |
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| CN102632280A (en) * | 2012-05-15 | 2012-08-15 | 庄永雷 | Hand-held cutting and milling machine |
| CN102848016A (en) * | 2011-06-27 | 2013-01-02 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN103028778A (en) * | 2012-12-05 | 2013-04-10 | 正阳实业投资有限公司 | Miniature handheld saw |
| CN104742095A (en) * | 2013-12-26 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Electric circular saw |
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| GB2329440A (en) * | 1997-09-23 | 1999-03-24 | Liu Wun Hui | Front shield of power sanding machine |
| CN201124271Y (en) * | 2007-12-19 | 2008-10-01 | 王骥 | Self-locking device for shield of cutter |
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| CN102848016B (en) * | 2011-06-27 | 2015-09-09 | 苏州宝时得电动工具有限公司 | Portable cutter |
| CN102632280A (en) * | 2012-05-15 | 2012-08-15 | 庄永雷 | Hand-held cutting and milling machine |
| CN103028778A (en) * | 2012-12-05 | 2013-04-10 | 正阳实业投资有限公司 | Miniature handheld saw |
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| CN110508868A (en) * | 2019-07-31 | 2019-11-29 | 浙江开创电气股份有限公司 | Electric circular saw |
| CN113183099A (en) * | 2020-01-29 | 2021-07-30 | 阿尔弗雷德·卡赫欧洲两合公司 | Hand-held and hand-guided tool device |
| WO2023193600A1 (en) * | 2022-04-06 | 2023-10-12 | 南京泉峰科技有限公司 | Cutting device and control method |
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| CN101786185B (en) | 2012-07-25 |
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Denomination of invention: Portable cutter Effective date of registration: 20140515 Granted publication date: 20120725 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |
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Date of cancellation: 20180416 Granted publication date: 20120725 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |