CN102407381B - Portable cutting machine - Google Patents
Portable cutting machine Download PDFInfo
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- CN102407381B CN102407381B CN201010297621.2A CN201010297621A CN102407381B CN 102407381 B CN102407381 B CN 102407381B CN 201010297621 A CN201010297621 A CN 201010297621A CN 102407381 B CN102407381 B CN 102407381B
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- locating part
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Abstract
The invention provides a portable cutting machine comprising a saw blade, a tool driving shaft, a shell and a protective guard, wherein the saw blade is used for cutting workpieces and provided with a cutting direction; the tool driving shaft is used for installing the saw blade; the protective guard is movably installed on the shell and provided with a saw blade through hole for allowing the saw blade to pass through, the protective guard moves between a first position and a second position movably relative to the shell, when the protective guard is arranged at the first position, the saw blade does not penetrate out of the saw blade through hole, and when the protective guard is arranged at the second position, the saw blade penetrates out of the saw blade through hole; a protective guard guiding mechanism is arranged between the protective guard and the shell and is wholly arranged at the side of the tool driving shaft, opposite to a cutting direction. Therefore, the side of the tool driving shaft, facing to the cutting direction, is not provided with a guiding structure any more, and a user can clearly observe the position of the saw blade, thus convenience is provided for cutting work.
Description
Technical field
The present invention relates to a kind of power tool, especially relate to a kind of portable cutter.
Background technology
Traditional portable cutter, for example portable electric annular 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 conventionally all perpendicular to saw blade, main handle is used for holding for operator in operating process, main handle is vertical with motor to be arranged, this electric circular saw comprises a base plate, determine guard shield and a moving guard shield for one, determine 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 base plate, when work, expose the rotatable saw blade bottom that makes of moving guard shield, the shortcoming of this traditional electrical annular saw be volume ratio more greatly and more clumsy, process some smaller, just not too applicable when thinner workpiece.
Production firm has improved technology, and release successively a kind of small volume, light and handy portable electric annular saw, this electric circular saw comprises a less saw blade, for driving the motor of saw blade, casing, casing front portion is used for accommodating transmission mechanism etc., casing rear portion is used for accommodating motor etc., this little portable electric annular saw does not arrange independent handle, the rear portion of casing can be used as handle and uses, this electric circular saw does not have the independent guard shield of determining, casing front portion is contained in saw blade top wherein, this casing front portion is just equivalent to the guard shield of determining of traditional electrical annular saw, an independent moving guard shield is movably installed on casing front portion, this moving guard shield comprise guard shield bottom and four from bottom upwardly extending sidewall, guard shield bottom is provided with opening for saw blade is therefrom stretched out, moving shroud ring is around the anterior setting of housing, thereby and with respect to the anterior removable saw blade depth difference exposed of making of casing.This electric circular saw structure is relatively simple, is relatively applicable to the thinner workpiece of cutting.But saw blade is completely enclosed within inside by the moving guard shield of current this portable electric annular saw, in the time of cut workpiece, the complete passive guard shield of user's realization blocks, cannot observe the position of saw blade at all, user can not understand the concrete progress of cutting at all in time, thereby has brought puzzlement to cutting work.
Summary of the invention
Technical problem to be solved by this invention is to provide the reliable portable cutter of a kind of operation.
In order to address the above problem, the invention provides a kind of portable cutter, comprising: for cut workpiece and there is the saw blade of cut direction; For the tool drives axle of described saw blade is installed; Housing; Movably be installed on the guard shield on described housing, this guard shield is provided with saw blade through hole for saw blade is therefrom passed, this guard shield movably moves with respect to described housing between primary importance and the second place, in the time that guard shield is positioned at primary importance, described saw blade does not pass from saw blade through hole, in the time that guard shield is positioned at the second place, described saw blade passes from described saw blade through hole; Between described guard shield and described housing, be provided with guard shield guiding mechanism, described guard shield guiding mechanism entirety is positioned at the side that described tool drives axle is contrary with described cut direction.
In disclosed portable cutter, owing to guard shield guiding mechanism is wholy set in to housing front portion closes on the position at housing rear portion, thereby make described guard shield no longer there is guide frame away from a side at described housing rear portion, thereby user can clearly observe the position of saw blade, for cutting work has brought facility.
Preferred implementation of the present invention is also following several:
Preferably, described guard shield guiding mechanism comprises the guide rail being arranged on of described guard shield and described housing, and the locating part on another in both.
Preferably, the position of the corresponding described saw blade through hole of described guard shield is provided with saw blade host cavity, and the position that described saw blade host cavity closes on described saw blade through hole is provided with through hole.
Preferably, described guard shield comprises the guard shield bottom that described saw blade through hole is set, described guard shield bottom has can be against the abutment face of workpiece, and described tool drives axle is positioned at described through hole and the described guard shield guiding mechanism centre position in described abutment face projection in the projection of described abutment face.
Preferably, two perpendicular sidewall outsides of the axis of described housing and described tool drives axle are respectively arranged with described locating part, and the quantity of described guide rail is two, coordinates respectively with the described locating part of described housing both sides.
Preferably, described guide rail is arc-shaped guide rail, and the center of circle of arc is positioned at outside described portable cutter and away from the side at described housing rear portion.
The present invention also provides a kind of portable cutter, comprising: motor; For the saw blade of cut workpiece; Be used for installing described saw blade and by described motor-driven tool drives axle; Housing, comprises the anterior housing rear portion with accommodating described motor of housing that described tool drives axle is installed; Movably be installed on the guard shield on described housing front portion, this guard shield is provided with saw blade through hole for saw blade is therefrom passed, this guard shield movably moves with respect to described housing between primary importance and the second place, in the time that guard shield is positioned at primary importance, described saw blade does not pass from saw blade through hole, in the time that guard shield is positioned at the second place, described saw blade passes from described saw blade through hole; Between described guard shield and described housing, be provided with guard shield guiding mechanism, described guard shield guiding mechanism entirety is between described tool drives axle and described motor.
In disclosed portable cutter, due to guard shield guiding mechanism is wholy set on housing front portion, and entirety is between described tool drives axle and described housing rear portion, thereby make described guard shield no longer there is guide frame away from a side of guard shield guiding mechanism, thereby user can clearly observe the position of saw blade, for cutting work has brought facility.
Preferably, described guard shield guiding mechanism comprises the guide rail being arranged on of described guard shield and described housing, and the locating part on another in both.
Preferably, the position of the corresponding described saw blade through hole of described guard shield is provided with saw blade host cavity, and the position that described saw blade host cavity closes on described saw blade through hole is provided with through hole.
Preferably, described guard shield comprises the guard shield bottom that described saw blade through hole is set, described guard shield bottom has can be against the abutment face of workpiece, and described tool drives axle is positioned at described through hole and the described guard shield guiding mechanism centre position in described abutment face projection in the projection of described abutment face.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is done to further detailed description.
The stereogram of the portable cutter that Fig. 1 discloses for first embodiment of the invention;
The plane when portable cutter that Fig. 2 discloses for Fig. 1 is not installed guard shield;
The cut-away view when portable cutter that Fig. 3 discloses for Fig. 1 is not installed guard shield;
The stereogram of the guard shield of the portable cutter that Fig. 4 discloses for Fig. 1;
Fig. 5 is guard shield in Fig. 4 stereogram from another perspective;
The stereogram of the portable cutter that Fig. 6 discloses for Fig. 1 in the time that saw blade exposes guard shield;
The three-dimensional exploded view of the portable cutter that Fig. 7 discloses for Fig. 1;
The stereogram of seeing from opposite side when the portable cutter that Fig. 8 discloses for Fig. 1 is not installed guard shield;
The portable cutter that Fig. 9 discloses for Fig. 8 is at the partial enlarged drawing at A place;
The stereogram of the portable cutter that Figure 10 discloses for Fig. 1 in the time of the position of spanner in opening;
The stereogram of the depth adjustment of the portable cutter that Figure 11 discloses for Figure 10;
The cut-away view when portable cutter that Figure 12 discloses for Fig. 1 is provided with guard shield and gear-box and is opened;
The exploded view of the portable cutter that Figure 13 discloses for Fig. 1 in the time that base plate is not installed on guard shield;
The partial exploded view of the portable cutter that Figure 14 discloses for Fig. 1;
The schematic internal view of the portable cutter that Figure 15 discloses for Fig. 1 in the time that guard shield is installed;
The part schematic diagram of the portable cutter that Figure 16 discloses for second embodiment of the invention;
The part schematic diagram of the portable cutter that Figure 17 discloses for third embodiment of the invention;
The front view of the portable cutter that Figure 18 discloses for fourth embodiment of the invention;
The stereogram of the guard shield that Figure 19 is the portable cutter that discloses in Figure 18;
Part stereogram when Figure 20 does not install guard shield for the portable cutter disclosing in Figure 18;
The top view that Figure 21 is the portable cutter that discloses in Figure 18;
Figure 22 is for the portable cutter that discloses in Figure 21 is along the phantom of straight line H-H;
The part rearview that Figure 23 is the portable cutter that discloses in Figure 18.
Wherein:
40. portable cutter 86. pin 136. first arcuate flanks
42. housing 88. groove 138. second arcuate flanks
The anterior 88a. square groove of 44. housings 140. bearings
46. housing rear portion 88b. cylindrical recesses 142. arc convex
48. handle grip portion 90. depth adjustment 144. first arcuate flanks
50. first end 92. arc opening 146. second arcuate flanks
52. second end 94. arcs are accommodated plate 148. bearings
53. tool drives axle 96. slide block 150. portable cutters
54. power line 98. cam spanner 154. guard shields
55. air outlet 100. cam part 157. rail end
56. saw blade 102. spanner portion 158. guard shield bottoms
57. air inlet 104. pointer 159. through holes
58. motor 106. rebounding mechanism 160. arc-shaped guide rails
59. electric motor fan 108. helical spring 161. saw blade host cavities
60. switch 110. pin 162a. depressions
62. transmission mechanism 112. pilot hole 162b. depressions
64. guard shield 114. diameters are compared with small end 163. guide rail bottoms
68. base plate 118. indicator collet 165. first arcuate flanks
70a-d. guard shield sidewall 120. first arcuate flanks 166. second guiding cheekns
72. saw blade through hole 122. second arcuate flanks 167. second arcuate flanks
74. chip-removal hole 124. bearing 168. spacing preiections
76. cavity 126. projection 169. fins
78. top edge 128. bearing inner race 170. guard shield sidewalls
80a-d. arc groove 130. bearing outer ring 172a. bearings
82a-d. housing sidewall 132. groove floor 172b. bearings
84. cylinder 134. arc opening 172c. bearings
174a. screw 174c. screw 178. laser alignment device
174b. screw 176. bearing inner race 180. dust-exhausting ports
X, Y. longitudinal extending axis a. angle
Specific embodiment
Embodiment mono-
With reference to Fig. 1, a kind of portable cutter 40 comprises housing 42, and this housing 42 comprises housing front portion 44, housing rear portion 46 and is connected the housing middle part at housing anterior 44 and housing rear portion 46.Housing middle part is handle grip portion 48 in one embodiment of the invention.Housing 42 can be moulding, and can be made up of two and half shells.Housing rear portion 46 comprises first end 50 and the second end 52, first end 50 and handle grip portion 48 adjacency, and the second end 52 is away from handle grip portion 48 and be conventionally connected with power line 54.
With reference to Fig. 2, handle grip portion 48 roughly extends straight together with housing rear portion 46, handle grip portion 48 is X with the longitudinal extending axis at housing rear portion 46, extend from 48 bendings of handle grip portion 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 handle grip portion 48 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.
With reference to Fig. 3, portable cutter 40 comprises the saw blade 56 and the motor that is used for driving this saw blade 56 for processing work, and motor is motor 58 in the present embodiment.Saw blade 56 has saw blade plane.In other embodiments of the invention, motor can be also air motor, hydraulic motor etc.Being contained in housing front portion 44 of saw blade 56 parts.Motor 58 is contained in housing rear portion 46, thereby motor 58 is electrically connected and can be connected to AC power (not shown) above with power line 54, and motor 58 can be also to power by dc-battery certainly.Portable cutter 40 also comprises switch 60, and switch 60 is electrically connected and is used for controlling the unlatching of motor 58 and stopping with motor 58.
See also Fig. 2 and Fig. 3, motor 58 is provided with electric motor fan 59, and electric motor fan 59 is contained in one end away from handle grip portion 48, housing rear portion 46, it has air outlet 55 at housing rear portion 46 around the region division of electric motor fan 59, and the position being connected with handle grip portion 48 at housing rear portion 46 is provided with air inlet 57.The position of electric motor fan 59 is so set, can makes air outlet relatively away from user's hand or head, thereby make the wind blowing out from air outlet can not blow to user's hand or head, improved the comfort level using.
Between motor 58 and saw blade 56, be provided with transmission mechanism 62 for the power of motor 58 being passed to saw blade 56 and driving saw blade 56 to move by tool drives axle 53.Transmission mechanism 62 is contained in respectively in housing anterior 44 and handle grip portion 48.
With reference to Fig. 1, Fig. 4 and Fig. 5, portable cutter 40 comprises guard shield 64, guard shield 64 around surround housing front portion 44, guard shield 64 comprises guard shield bottom 66, in the present embodiment, the outside of guard shield bottom 66 is also provided with base plate 68 (with reference to Figure 13), between base plate 68 and guard shield bottom 66, is fixedly connected with by the mode of buckle.In the course of work, base plate 68 contacts with surface of the work.In other embodiments of the invention, also mounting base 68 not of the outside of guard shield bottom 66, but directly contact with surface of the work by guard shield bottom 66.
With reference to Fig. 1 and Fig. 6, between guard shield 64 and housing front portion 44, be connected with mating part (about arc-shaped guide rail and mating part by arc-shaped guide rail, can describe in detail below), coordinate with arc-shaped guide rail by mating part, thereby restriction guard shield is along the displacement in the direction vertical with saw blade plane.It is upper that guide rail is located at anterior in both one of guard shield and housing, and mating part is located on guard shield and anterior another in both of housing.Mating part coordinates with arc-shaped guide rail and can move along arc-shaped guide rail.In the time that move along arc-shaped guide rail mating part, guard shield 64 relative housing front portions 44 are movably from primary importance to the second place, in the time that guard shield 64 is positioned at primary importance, saw blade 56 does not pass (with reference to Fig. 1) from saw blade through hole 72, and saw blade 56 can not exposed from guard shield 64; In the time that guard shield 64 is positioned at the second place, what saw blade 56 was at least part of passes (with reference to Fig. 6) from saw blade through hole 72, and now, saw blade 56 can part expose from guard shield 64, thereby portable cutter 40 can be used to processing work.
With further reference to Fig. 4 and Fig. 5, guard shield sidewall 70a and 70b be just to arranging, and guard shield sidewall 70c and 70d be just to arranging, and in the time that guard shield 64 is installed on housing front portion 44, and guard shield sidewall 70a and 70b and saw blade 56 almost parallels, and be positioned at the both sides of saw blade 56.In the present embodiment, arc-shaped guide rail is the arc groove 80a being located on the inner surface of guard shield sidewall 70a, 80b and be located at the arc groove 80c on the inner surface of guard shield sidewall 70b, 80d.Arc groove 80a-d roughly extends obliquely from guard shield bottom 66.Arc groove 80a-d arranges along the circumferential direction interval of guard shield sidewall 70a and 70b inner surface.The center of circle corresponding with the circular arc at arc groove 80b place, the center of circle corresponding to circular arc at arc groove 80a place is roughly the same center of circle.The center of circle corresponding with the circular arc at arc groove 80d place, the center of circle corresponding to circular arc at arc groove 80c 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 82a-d, respectively with the corresponding cooperation of four guard shield sidewall 70a-d of guard shield 64, in the present embodiment, mating part is located on the outer surface of housing sidewall 82a and 82b and is coordinated with arc groove 80a-d.Mating part is generally projection, and projection is contained in arc groove 80a-d and can moves therein.
In the present embodiment, mating part comprises cylinder 84, cylinder 84 center is provided with through hole, pin 86 is through through hole, the two ends of pin 86 are exposed to through hole, coordinating between the through hole of pin 86 and cylinder 84 is matched in clearance, thereby cylinder 84 can be rotated around pin 86, sidewall 82a and 82b are provided with the groove 88 for accommodating mating part, the mid portion of groove 88 is square groove 88a, what be used for part accommodates cylinder 84, and the two ends of groove 88 are provided with the cylindrical recesses 88b matching with the two ends shape of pin 86 of exposing through hole.Being contained in semi-cylindrical recesses 88a of cylinder 84 parts, the two ends of pin 86 are contained in cylindrical recesses 88b, between cylinder 84 and square groove 88a, have certain gap, and this docked mode can be rotated cylinder 84 in square groove 88a.In the present embodiment, between the two ends of pin 86 and cylindrical recesses 88b, be interference fit, thereby make whole mating part can not be easy to fall down from housing front portion 44.
Certainly between pin 86 and cylinder 84, can be to be fixedly connected with, and can be also matched in clearance between the two ends of pin 86 and cylindrical recesses 88b, pin 86 is rotated together with cylinder 84.
With reference to Figure 10 and Figure 11, portable cutter 40 comprises that depth adjustment 90 is used for regulating depth of cut.Housing sidewall 82a is provided with arc opening 92.Bearing of trend and the radian of the bearing of trend of arc opening 92 and radian and arc groove 80a-d are roughly the same.One arc is accommodated plate 94 and is contained in this arc opening 92.Depth adjustment 90 is movably contained in arc and accommodates in plate 94.Depth adjustment 90 comprises slide block 96, and slide block 96 is movably installed on arc and accommodates in plate 94.
Being connected on slide block 96 of cam spanner 98 pivotables.Cam spanner 98 comprises cam part 100 and spanner portion 102.By operation spanner portion 102, cam part 100 is pivotable to be clamped relative depth adjustment 90 housing sidewall 82a or unclamp.Fixingly on slide block 96 be connected with a pointer 104, pointer 104 is used to refer to the degree of depth of setting.Arc opening 92 1 sides indicate scale value (not shown), and this scale value represents saw blade depth.Pointer 104 points in the scale value of arc opening 92 1 sides, thereby shows the saw blade depth that current setting is good.
In work, while needing regulation depth, first lift spanner portion 102, make the position of cam spanner 98 in opening, along arc opening 92 sliding sliders 96, make pointer 104 point to the scale value needing.When having set up after the degree of depth, depress spanner portion 102, make the position of cam spanner 98 in closing, now slide block 96 is locked in a certain position of arc opening 92.When cut workpiece, being pressed on surface of the work of base plate 68 parts, operator holds handle grip portion 48, and impose on 48 1 pressure of handle grip portion, now the relative guard shield 64 of housing 42 is along arcuate movement, until the top edge 78 of guard shield 64 and the cam part 100 of cam spanner 98 contact, expose the saw blade 56 of the certain depth of guard shield 64 and just can process.
With reference to Figure 12, portable cutter 40 comprises rebounding mechanism 106, and this rebounding mechanism 106 is for making the relative housing 42 of guard shield 64 move to primary importance from the second place.In the present embodiment, rebounding mechanism 106 comprises helical spring 108 and pin 110.Portable cutter 40 further comprises gear drive (not indicating), this gear drive is contained in gear box casing (not indicating), gear box casing is provided with pilot hole 112 and is used for accommodating helical spring 108 and part pin 110, one end of helical spring 108 props up gear box casing, pin 110 comprises that a diameter is compared with small end 114 and a larger end 116 of diameter, diameter is compared with being arranged with helical spring 108 on small end 114, the larger end 116 of diameter is against guard shield bottom 66, helical spring 108 compresses power towards the direction of guard shield bottom 66 to 110 1, pin.
With reference to Figure 13, between guard shield 64 and base plate 68, be provided with and cut wide indicating device.This is cut wide indicating device and comprises some indicator collets 118.It is upper that indicator collet 118 is movably installed on guard shield sidewall 70a-b, is used for being exposed to after guard shield 64 when saw blade 56, indicate saw blade 56 foremost and rearmost end.
With reference to Figure 14 and Figure 15, further combined with Fig. 4 and Fig. 5, portable cutter 40 further comprises locating part.It is upper that above-mentioned arc-shaped guide rail is arranged in both one of guard shield 64 and housing 42, and it is upper that locating part is arranged in both another of guard shield 64 and housing 42, and this locating part coordinates with arc-shaped guide rail, thereby limits the displacement of guard shield 64 along arc-shaped guide rail normal direction.
In one embodiment of the invention, the arc-shaped guide rail coordinating with locating part refers to above-mentioned arc groove 80a and 80d, the locating part of mainly first introducing arc groove 80a and being mated here.
Locating part comprises first group of locating part and second group of locating part.Selectable linear contact the with the first arcuate flanks or the second arcuate flanks of first group of locating part, second group of locating part is selectable to be contacted with a linearity in the first arcuate flanks or the second arcuate flanks.
First group of locating part be identical with second group of locating part is a bearing 124.The upper outward extending projection 126 that is provided with of housing sidewall 82a.Bearing 124 is installed on projection 126.Bearing 124 comprises bearing inner race 128 and bearing outer ring 130.The relative bearing inner race 128 of bearing outer ring 130 is rotatable.Between bearing inner race 128 and projection 126, it is interference fit.Two bearings 124 and two cylinders 84 are all contained in arc groove 80a.Two cylinders 84, between two bearings 124, also can be positioned at the outside of two bearings 124.
When operation, operator presses handle grip portion 48, make guard shield 64 move to the second place with respect to housing 42 from primary importance, as the bearing 124 of first group of locating part exercisable with the first arcuate flanks 120 or the second arcuate flanks 122 linear a contact in both, keep certain gap with another in both; Meanwhile, as the exercisable linear contact not contacting with the bearing 124 of first group of locating part in both with the first arcuate flanks 120 or the second arcuate flanks 122 of the bearing 124 of second group of locating part, and with both in another keep certain gap.
With reference to Figure 15, certain flashy state diagram of moving for the relative housing 42 of guard shield 64, now as the bearing 124 of first group of locating part with first arcuate flanks 120 is linear contacts, keep certain gap with the second arcuate flanks 122; Simultaneously keep certain gap as the bearing 124 of second group of locating part and the first arcuate flanks 120, contact with the second arcuate flanks 122 linearities.
When guard shield moves to after the second place with respect to housing, operator holds handle grip portion 48, forward or backward mobile portable cutting machine, as first group of locating part and the exercisable while of bearing as second group of locating part and linear a contact in the first arcuate flanks or the second arcuate flanks.
As hereinbefore, also contain and first group of locating part and second group of locating part that locating part is identical in arc groove 80d, the object that locating part is set in arc groove 80d is to make limit effect better.
Certainly the quantity of locating part is not limited to the above.
Embodiment bis-
With reference to Figure 16, the present embodiment and embodiment mono-are basic identical, difference is that the arc-shaped guide rail coordinating with locating part is not original arc groove, but is different from the another one arc opening 134 of arc groove, and the radian of this arc opening 134 is identical with the radian of aforementioned arc groove.Be provided with the first arcuate flanks 136 and the second arcuate flanks 138 in two respective side of arc opening 134, first group of locating part and second group of locating part are respectively two bearings 140, be positioned at the both sides of arc opening 134 as two bearings 140 of first group of locating part, and exercisable and the first arcuate flanks 136 or second arcuate flanks 138 is linear contacts.
Figure 16 is certain flashy state diagram that the relative housing 42 of guard shield 64 moves, now, a bearing 140 as first group of locating part contacts with the first arcuate flanks 136 linearities, keeps certain interval as another bearing 140 and second arcuate flanks 138 of first group of locating part; Meanwhile, keep certain interval as bearing 140 and first arcuate flanks 136 of second group of locating part, as another bearing 140 of second group of locating part with second arcuate flanks 138 is linear contacts.
Embodiment tri-
With reference to Figure 17, the present embodiment and embodiment mono-basic identical (not shown), difference is that the arc-shaped guide rail coordinating with locating part is not original arc groove, but being different from the another one arc convex 142 of arc groove, the radian of this arc convex 142 is identical with the radian of aforementioned arc groove.Be provided with the first arcuate flanks 144 and the second arcuate flanks 146 at two of arc convex 142 corresponding lateral surfaces, first group of locating part and second group of locating part are respectively two bearings 148, these two bearings 148 are positioned at the both sides of arc convex 142, and exercisable and the first arcuate flanks 144 or second arcuate flanks 146 is linear contacts.
Figure 17 is certain flashy state diagram that the relative housing 42 of guard shield 64 moves, now, a bearing 148 as first group of locating part contacts with the first arcuate flanks 144 linearities, keeps certain interval as another bearing 148 and second arcuate flanks 146 of first group of locating part; Meanwhile, keep certain interval as bearing 148 and first arcuate flanks 144 of second group of locating part, as another bearing 148 of second group of locating part with second arcuate flanks 146 is linear contacts.
Embodiment tetra-
Refer to Figure 18, the portable cutter 150 that it provides for fourth embodiment of the invention, it comprises guard shield 154, housing 42 and is contained in the saw blade 56 in guard shield 154, its middle shell 42 comprises housing front portion 156, accommodates the housing rear portion 46 of motor, the handle grip portion 48 between housing anterior 156 and housing rear portion 46.Portable cutter 150 is basic identical with the functional structure of the portable cutter 40 that previous embodiment provides, and is only described for difference as space is limited at this.
See also Figure 18 and Figure 19.Guard shield 154 comprises for the guard shield bottom 158 against workpiece, for the arc-shaped guide rail 160 that coordinates with the locating part of portable cutter 150, for accommodating the saw blade host cavity 161 of saw blade 56.
Saw blade host cavity 161 is installed on guard shield bottom 158 on the surface of described abutment face, and corresponding with the position of saw blade through hole 72, in the time that guard shield 154 is installed on portable cutter 150 and change between primary importance and the second place, saw blade host cavity 161 all part is contained in housing front portion 156, thereby make the small volume of portable cutter 150, rationally utilized the space in housing front portion 156.Saw blade host cavity 161 forms the cross section cavity identical and corresponding with saw blade through hole 72 shapes, and saw blade 56 can be contained in described cavity.Saw blade host cavity 161 is respectively arranged with depression 162a and depression 162b with the centre position of the pair of sidewalls that saw blade through hole 72 extends in the same way, when saw blade 56 is contained in saw blade host cavity 161 when interior, depression 162a and depression 162b can accommodate the tool drives axle 53 of saw blade 56, form obstacle thereby saw blade host cavity 161 can not changed guard shield 154 between primary importance and the second place.
Saw blade host cavity 161 with close on saw blade through hole 72 positions and be provided with the through hole 159 that runs through saw blade host cavity 161, in the time that guard shield 154 is mounted to portable cutter 150, tool drives axle 53 is positioned at through hole 159 and arc-shaped guide rail 160 centre position in described abutment face projection in the projection of described abutment face.In the time of user's cut workpiece, can clearly observe by through hole 159 position of saw blade 56, thereby can effectively improve cutting accuracy.Moreover, saw blade host cavity 161 can partly be contained in housing front portion 156, it is apart from the close together of saw blade 56, and the chip that saw blade 56 produces in cutting process can be discharged very smoothly from through hole 159, thereby makes the dust discharge of integrated model very smooth and easy.
The quantity of arc-shaped guide rail 160 is two, extends respectively, and is installed on guard shield bottom 158 on the surface of described abutment face, and lay respectively at a side of saw blade host cavity 161 along its longitudinally.Two arc-shaped guide rails 160 relatively and be arranged in parallel, simultaneously two arc-shaped guide rails 160 all the other end towards described surface along described longitudinally bend according to certain radian.After guard shield 154 is mounted to portable cutter 150, the center of circle of arc-shaped guide rail 160 is positioned at outside guard shield 154 and portable cutter 150 and away from the side at housing rear portion 46, an and tool drives axle side contrary with described cut direction F described in arc-shaped guide rail 160, between the motor in tool drives axle 53 and housing rear portion 46, thereby make tool drives axle 160, towards a side of cut direction, any guiding mechanism is not set, observe saw blade position thereby possess good visual angle by through hole 159.
After guard shield 154 is mounted to portable cutter 150, arc-shaped guide rail 160 can be exposed in user's sight line, and it can not blocked by housing 42 or guard shield 154.So arrange on the housing 42 that can make guard shield 154 be very easy to be mounted to portable cutter 150, in like manner also can very convenient guard shield 154 be disassembled from housing 42, moreover user can clearly observe the mated condition of locating part and arc-shaped guide rail 160, even if coordinating between locating part and arc-shaped guide rail 160 broken down, also can be very easy to find out failure cause, thereby bring facility to user.
The structure of two arc-shaped guide rails 160 is identical, and it comprises respectively the guide rails bottom 163 that is connected away from the rail end 157 of guard shield bottom 158, with guard shield bottom 158, bottom rail end 157 and guide rail between 163 and the first guiding cheekn 164 and second guiding cheekn 166 of equidistant extension.Rail end 157 and guide rail bottom 163, for limiting the scope of activities of locating part, prevent that locating part from departing from from arc-shaped guide rail 160.
The first guiding cheekn 164 and the second guiding cheekn 166 possess identical radian on the two lengthwise bearing of trend, thereby make the track being formed by the first guiding cheekn 164 and the second guiding cheekn 166 possess certain radian.The first guiding cheekn 164 surface that to be the first arcuate flanks 165, the second guiding cheekns 166 towards the surface of the second guiding cheekn 166 face mutually with the first arcuate flanks 165 is the second arcuate flanks 167.In the time that guard shield 154 is assembled on portable cutter 150, two arc-shaped guide rails 160 can coordinate with the locating part of portable cutter 150, limit the scope that guard shield 154 moves with respect to housing front portion 156.
In the first arcuate flanks 165 and the second arcuate flanks 167, fin 169 is all set, for coordinating with locating part, limits the position of guard shield 154, prevent that guard shield 154 from sliding along the direction of vertical circular saw blade 56 planes with respect to portable cutter 150.In the present embodiment, rail end 162 is provided with fin 169 with 163 surfaces of facing mutually, guide rail bottom also correspondence, thereby makes locating part more stable with coordinating of arc-shaped guide rail 160.
Extend a spacing preiection 168 at the second guiding cheekn 166 back to a side centre position of the first guiding cheekn 164, it can match with the depth adjustment of portable cutter 150 90, limits the depth of cut of portable cutter 150.Certainly, portable cutter 150 often only arranges a depth adjustment 90, and therefore two arc-shaped guide rails 160 might not all have spacing preiection 168, and the arc-shaped guide rail 160 coordinating with depth adjustment 90 as required arranges spacing preiection 168.
In order to strengthen the stress intensity of two arc-shaped guide rails 160, between the second guiding cheekn 166 of two arc-shaped guide rails 160, be provided with guard shield sidewall 170, thereby make the shape of two arc-shaped guide rails 160 be difficult for deformation occurs, extend service life.Certainly, in order to simplify the structure of guard shield 154, the quantity of arc-shaped guide rail 160 can be one, it can be arranged at the centre position of guard shield sidewall 170 towards a side of saw blade host cavity 161, in anterior 156 inner sides of housing, locating part is set accordingly and coordinates with arc-shaped guide rail 160, slide with respect to portable cutter 150 thereby also can realize guard shield 154.
See also Figure 18 and Figure 20.Two perpendicular sidewalls outsides of the housing anterior 156 of portable cutter 150 and the axis of tool drives axle 53 are respectively arranged with locating part, and the locating part of every side is all positioned at the side that tool drives axle 53 is contrary with cut direction F, between the motor in tool drives axle 53 and housing rear portion 46.The locating part of every side is divided into first group of locating part and second group of locating part, wherein first group of locating part for the first guiding cheekn 164 linear contact mutually of arc-shaped guide rail 160, second group of locating part for and the second guiding cheekn 166 mutually linearity contact.
Described first group of locating part and described second group of locating part can every group at least comprise a locating part, and the quantity of the described locating part coordinating with each arc-shaped guide rail 160 is at least two.In the time that in first group of locating part and second group of locating part, every group of locating part quantity comprising is one, first group of locating part of housing 42 both sides is contrary with the matching relationship between the first side wall and the second sidewall with second group of locating part, the first group of locating part that is housing 42 1 sides contacts with the first side wall is linear, second group of locating part contacts with the second sidewall is linear, first group of locating part of housing 42 opposite sides contacts with the second sidewall is linear, and the second sidewall contacts with the first side wall is linear.So arrange and can prevent that guard shield 154 from shaking, thus guarantee guard shield 154 can be stable slide with respect to housing 42.
In the present embodiment, first group of locating part comprises the first locating part, the second locating part, second group of locating part is the 3rd locating part, and the first locating part and the second locating part all with the first arcuate flanks 165 linear contact mutually, the 3rd locating part is the position between the first locating part and the second locating part contact with the second arcuate flanks 167 is linear along arc-shaped guide rail 160 bearing of trends, thereby effectively limits the normal direction generation displacement of guard shield 154 with respect to arc-shaped guide rail 160.
Certainly, the first locating part, the position of the second locating part and the 3rd locating part arranges and is not limited to the first locating part and the second locating part and the first arcuate flanks 165 linear contact mutually, the 3rd locating part and the second arcuate flanks 167 linear contact mutually, it can also be arranged to the first locating part and the 3rd locating part and the first arcuate flanks 165 linear contact mutually, the second locating part and the second arcuate flanks 167 linear contact mutually, in like manner it can also be arranged to the second locating part and the 3rd locating part and first arcuate flanks 165 is linear contacts, the first locating part contacts with the second arcuate flanks 167 linearities.Those skilled in the art also may make other and change, but as long as its function and effect and the present invention are same or similar, all should be covered by protection domain of the present invention.
In the present embodiment, identical bearing 172a, bearing 172b and the bearing 172c of being respectively of structure of the first locating part, the second locating part and the 3rd locating part, the external diameter of three bearings is less than the distance between the first arcuate flanks 165 and the second arcuate flanks 167, and is greater than the distance between the fin 169 of the first guiding cheekn 164 and the fin 169 of the second guiding cheekn 166.The bearing 124 that the structure of aforementioned three bearings provides with the first embodiment is identical, does not describe in detail as space is limited at this.In the time that guard shield 154 is mounted to portable cutter 150, fin 169 can be between described three bearings and housing front portion 156.
Certainly, the size of three bearings is not limited to aforementioned description, it can also be that the external diameter of three bearings also can equal the distance between the first arcuate flanks 165 and the second arcuate flanks 167, now the first locating part, the second locating part and the 3rd locating part simultaneously with the first arcuate flanks 165 with second arcuate flanks 167 is linear contacts.Those skilled in the art also may make other and change, but as long as its function and effect and the present invention are same or similar, all should be covered by protection domain of the present invention.
The mounting means of bearing 172a, bearing 172b and bearing 172c also can be identical with the mounting means of the bearing 124 in the first embodiment, but in the present embodiment, bearing 172a, bearing 172b and bearing 172c are installed on housing front portion 156 by screw 174a, screw 174b and screw 174c respectively.
Because aforementioned three bearings are identical with the mounting structure of three screws, be only described in detail for the fit system of screw 174a and bearing 172a at this.
Screw 174a comprises head of screw and screw tail, screw tail can and be threaded io housing front portion 156 through the bearing inner race of bearing 172a, bearing 172 is sandwiched between head of screw and fin 169, thereby realizes the fixing of bearing 172a position, the in like manner position of rigid bearing 172b and bearing 172c.Now, the fin 169 of two arc-shaped guide rails 160 is sandwiched between the locating part of anterior 156 both sides of housing, thereby guard shield 154 can not swung with respect to housing anterior 156, and then has improved the stability in cutting process.
In the time that guard shield 154 is assembled to portable cutter 150, two arc-shaped guide rails 160 coordinate with the locating part of anterior 156 both sides of housing respectively, and guard shield 154 is slided with respect to portable cutter 150, and saw blade host cavity 161 can be contained in anterior 156 inside of housing.In this simultaneously, the position that user can regulation depth adjusting device 90, limits the cutting-in of portable cutter 150, and, when guard shield 154 is after locating part slip certain distance, spacing preiection 168 can prop up depth adjustment 90, thereby realizes depthkeeping cutting.
Refer to Figure 18, in the time that guard shield 154 is mounted on portable cutter 150, a guard shield guiding mechanism of arc-shaped guide rail 160 and locating part composition, guard shield 154 by described guard shield guiding mechanism with respect to the anterior 156 stable slips of housing.And described guard shield guiding mechanism entirety is positioned at the side that tool drives axle 53 is contrary with cut direction F, between the motor in tool drives axle 53 and housing rear portion 46, thereby making to be positioned at tool drives axle 53 can not blocked by described guard shield guiding mechanism away from the through hole 159 of housing 42 1 sides, thereby make user can clearly observe by through hole 159 position of saw blade 56, can't be subject to any blocking, thereby it possesses a good visual angle, bring facility to apparatus cutting work.
It is only the situation of corresponding to the quantity of arc-shaped guide rail 160, position that can be in housing anterior 156 and be positioned at close housing 42 arranges described locating part and coordinates with arc-shaped guide rail 160, now described locating part at least comprises two locating parts, but preferred described locating part is three, now, the guard shield guiding mechanism entirety being made up of locating part and arc-shaped guide rail 160 is positioned at the side that tool drives axle 53 is contrary with cut direction F, between the motor in tool drives axle 53 and housing rear portion 46, now the structure of described guard shield guiding mechanism is very simple, thereby make overall structure there is the more cost at the end, and easily assembling.
Arc-shaped guide rail 160 can exchange with the position of described locating part, be that arc-shaped guide rail 160 can be arranged at the position of housing front portion 156 corresponding to aforementioned locating part, described locating part is installed on guard shield 154, in the position of the aforementioned arc-shaped guide rail of correspondence, hold-down arm is set, for mounting limit part.So setting also can realize guard shield 154 slip stable with respect to portable cutter 150.
The quantity of locating part is not limited to aforementioned the first locating part, the second locating part and the 3rd locating part, and it can also comprise the 4th locating part, the 5th locating part etc. as required.
See also Figure 18, Figure 21 and Figure 22.For the ease of assembling and improving assembly precision and eliminate manufacturing tolerance, at least one group in first group of locating part and second group of locating part can possess position adjustment function, and it comprises that at least one can be with respect to the locating part of the transverse shifting of arc-shaped guide rail 160.In the present embodiment, be that second group of locating part possesses described position adjustment function, be bearing 172c bearing inner race 176 and screw tail between there is gap, thereby make bearing 172c produce certain deviation with respect to the center line of screw 174, and then realize bearing 172c being laterally moved with respect to arc-shaped guide rail 160.In the time that described three bearings are installed, can first make the position of bearing 172a and bearing 172b first fix, then make the two prop up the first arcuate flanks 65 simultaneously, now by regulating bearing 172c with respect to arc-shaped guide rail 160 transverse shiftings, so that it props up the second arcuate flanks 167, realize closely cooperating between locating part and arc-shaped guide rail 160, and eliminate manufacturing tolerance.
First group of locating part also can possess described position adjustment function, but in the present embodiment, the first locating part in first group of locating part and the second locating part all do not possess described position adjustment function, be that bearing 172a and bearing 172b are and coaxially arrange and be fixed on screw on housing front portion 156, can not be with respect to arc-shaped guide rail 160 transverse shiftings.So arrange and make the first locating part, the second locating part and the 3rd locating part form a triangle, thereby the structure forming is very firm, when need to regulate between locating part and arc track 160 position relationship time, only need to adjust the 3rd locating part, simple to operate, and then offer convenience to user.
In the included whole locating parts of first group of locating part and second group of locating part, comprise that at most two can not, with respect to the locating part of arc-shaped guide rail 160 transverse shiftings, now be eliminated tolerance by adjustable locating part.When first group of locating part comprise can not be two with respect to the quantity of the locating part of arc-shaped guide rail 160 transverse shiftings time, the locating part in second group of locating part all can be with respect to arc-shaped guide rail 160 transverse shiftings.When first group of locating part comprise can not be one with respect to the quantity of the locating part of arc-shaped guide rail 160 transverse shiftings time, in second group of locating part, comprise at most one can not be with respect to the locating part of arc-shaped guide rail 160 transverse shiftings.In like manner, vice versa.So setting just can be eliminated manufacturing tolerance with respect to the locating part of arc-shaped guide rail 160 transverse shiftings by regulating, and makes the cooperation between guard shield 154 and arc-shaped guide rail 160 more smooth and easy.
Take the quantity of locating part as four for example, first group of locating part can comprise the first locating part, the second locating part and the 3rd locating part, second group of locating part comprises the 4th locating part, and can adopt the first locating part, the second locating part and the 3rd locating part to contact with the first arcuate flanks 165 linearities, the 4th locating part and the linear mode contacting of the second arcuate flanks 167.
Now, maximum two arc-shaped guide rail 160 lateral adjustments relatively in first group of locating part, can not be with respect to arc-shaped guide rail 160 transverse shiftings such as the first locating part and the second locating part, and the 3rd locating part can be with respect to arc-shaped guide rail 160 transverse shiftings.If described the first locating part, described the second locating part and described the 3rd locating part are all unadjustable, now due to the problem of the accuracy of manufacture, be easy to the situation that occurs that three cannot contact with the first arcuate flanks 165 linearities simultaneously, now just cannot be by regulating locating part to eliminate tolerances with respect to arc-shaped guide rail 160 transverse shiftings.Can not be with respect to the situation of arc-shaped guide rail 160 transverse shiftings corresponding to thering are two locating parts in first group of locating part, the 4th locating part in second group of locating part must can be with respect to arc-shaped guide rail 160 transverse shiftings, so can eliminate and manufacture the tolerance producing.Otherwise, the 4th locating part can become with the first locating part a triangle with the second locating part, the length of perpendicular of being made to opposite side by the 4th locating part in this triangle is fixed, if three locating parts in this triangle are because the reason of manufacturing tolerance causes contacting with corresponding arc-shaped guide rail 160 sidewalls linearities simultaneously, may be the width that the length of vertical line is less than arc-shaped guide rail 160, now just cannot eliminate tolerance by adjusting the 3rd locating part, thereby cannot make three locating parts in described triangle contact with the sidewall linearity of arc-shaped guide rail 160 simultaneously.
When only thering is a locating part in first group of locating part can not be with respect to arc-shaped guide rail 160 transverse shifting time, such as the first locating part can not be with respect to arc-shaped guide rail 160 transverse shiftings, the second locating part and the 3rd locating part can be with respect to arc-shaped guide rail 160 transverse shiftings, and now can be arranged to can not be with respect to arc-shaped guide rail 160 transverse shiftings for the 4th locating part in second group of locating part.The length of the line segment being conventionally made up of the first locating part and the 4th locating part is necessarily greater than the width of arc-shaped guide rail 160, therefore certainly exist the situation that the first locating part and the 4th locating part contact with the sidewall linearity of arc-shaped guide rail 160 simultaneously, now regulate the second locating part and the 3rd locating part just can realize four locating parts and contact with the corresponding sidewall linearity of arc-shaped guide rail 160 simultaneously.
In the time that the quantity of locating part is five, first group of locating part can comprise the first locating part, the second locating part and the 3rd locating part, second group of locating part comprises the 4th locating part and the 5th locating part, first group of locating part is for contacting with the first arcuate flanks 165 linearities, and second group of locating part contacts with the second arcuate flanks 167 linearities.When possessing two or three in first group of locating part can not be with respect to the locating part of arc-shaped guide rail 160 transverse shiftings time, situation, with aforementioned description, does not repeat to introduce at this.When only comprising in first group of locating part that one can not be with respect to the locating part of arc-shaped guide rail 160 transverse shiftings time, can not be with respect to arc-shaped guide rail 160 transverse shiftings as the first locating part, the second locating part and the 3rd locating part can be with respect to arc-shaped guide rail 160 transverse shiftings.Now in the 4th locating part in second group of locating part and the 5th locating part, only can have one can not be with respect to arc-shaped guide rail 160 transverse shiftings, occur can not forming leg-of-mutton situation with respect to the locating part of arc-shaped guide rail 160 transverse shiftings by three avoiding.
In like manner; when the quantity of locating part is that six, seven or eight etc. can arrange according to the principle of aforementioned description; be not described in detail as space is limited at this; but as long as function and the present invention of its technical scheme adopting and realization are same or similar, all should be covered by protection domain of the present invention.
Also can draw thus, in first group of locating part, select arbitrarily two locating parts, in second group of locating part, select arbitrarily a locating part, in described three locating parts, comprise at most two can not be with respect to the locating part of arc-shaped guide rail 160 transverse shiftings, otherwise there will be cannot with the corresponding arc-shaped guide rail 160 sidewalls situation of linear contact mutually, cause locating part waste or arc-shaped guide rail 160 can produce transverse shiftings and cause guard shield 154 to shake affecting cutting accuracy.
Certainly, realize locating part and be not limited to aforementioned description with respect to the technical scheme being laterally moved of arc-shaped guide rail 160, it can also be for adopting compared with the bearing of large diameter and screw fit, or bearing and screw coaxially arrange, but the position of described screw being installed at housing anterior 156 arranges the laterally extending bar hole of relative arc-shaped guide rail 160, in anterior 156 inner sides of housing, screw cap being set is connected with described screw thread, slide and realize position adjustments etc. in described bar hole by screw, at this as space is limited, do not carry out exhaustive list for the structure that realizes aforementioned function, but those skilled in the art are under the enlightenment of the technology of the present invention marrow, make with the same or analogous technical scheme of functional structure of the present invention, all should be covered by protection domain of the present invention.
Aforementioned structure is not limited to first group of locating part and contacts with the first arcuate flanks 165 linearities, second group of locating part contacts with the second arcuate flanks 167 linearities, it can also be arranged to first group of locating part and contact with the second arcuate flanks 167 linearities, and second group of locating part contacts with the first arcuate flanks 165 linearities.In the time of assembling, first first group of locating part is mounted on arc-shaped guide rail 160, and make it against living the second arcuate flanks 167, then second group of locating part is mounted to arc-shaped guide rail, and by regulating the position of second group of locating part to make it against the first arcuate flanks 165.So arrange and can make structure more flexible, provide more choices to assembly process.
Moreover, the mode that in the present invention, locating part coordinates with guide rail is not limited to arc-shaped guide rail, also can adopt the scheme in the present invention along linearly extended guide rail, mounting means and fit structure all with embodiment of the present invention in the technical scheme recorded same or similar, do not describe in detail as space is limited at this.
Refer to Figure 18 and Figure 23, on anterior 156 sidewalls vertical with saw blade 56 planes of the housing of portable cutter 150, be provided with laser alignment device 178, be used to user to provide laser guide in cut workpiece process.Also be provided with dust-exhausting port 180 in housing front portion 156, it is positioned on the sidewall with housing anterior 156 and saw blade 56 plane parallel, and is positioned at the side of tool drives axle 53 away from housing 42.
The present invention is not limited to aforementioned embodiments, and those skilled in the art also may make other and change under the enlightenment of the technology of the present invention marrow, but as long as function and the present invention of its realization are same or similar, all should be covered by protection domain of the present invention.
Claims (10)
1. a portable cutter, comprising:
For cut workpiece and there is the saw blade of cut direction;
For the tool drives axle of described saw blade is installed;
Housing;
Movably be installed on the guard shield on described housing, this guard shield is provided with saw blade through hole for saw blade is therefrom passed, this guard shield movably moves with respect to described housing between primary importance and the second place, in the time that guard shield is positioned at primary importance, described saw blade does not pass from saw blade through hole, in the time that guard shield is positioned at the second place, described saw blade passes from described saw blade through hole;
Between described guard shield and described housing, be provided with guard shield guiding mechanism, it is characterized in that: described guard shield guiding mechanism entirety is positioned at the side that described tool drives axle is contrary with described cut direction.
2. portable cutter according to claim 1, is characterized in that: described guard shield guiding mechanism comprises the guide rail being arranged on of described guard shield and described housing, and the locating part on another in both.
3. portable cutter according to claim 2, is characterized in that: the position of the corresponding described saw blade through hole of described guard shield is provided with saw blade host cavity, and the position that described saw blade host cavity closes on described saw blade through hole is provided with through hole.
4. portable cutter according to claim 3, it is characterized in that: described guard shield comprises the guard shield bottom that described saw blade through hole is set, described guard shield bottom has can be against the abutment face of workpiece, and described tool drives axle is positioned at described through hole and the described guard shield guiding mechanism centre position in described abutment face projection in the projection of described abutment face.
5. portable cutter according to claim 4, it is characterized in that: two perpendicular sidewall outsides of axis of described housing and described tool drives axle are respectively arranged with described locating part, the quantity of described guide rail is two, coordinates respectively with the described locating part of described housing both sides.
6. portable cutter according to claim 5, is characterized in that: described guide rail is arc-shaped guide rail, and the center of circle of arc is positioned at outside described portable cutter and away from the side at described housing rear portion.
7. a portable cutter, comprising:
Motor;
For the saw blade of cut workpiece;
Be used for installing described saw blade and by described motor-driven tool drives axle;
Housing, comprises the anterior housing rear portion with accommodating described motor of housing that described tool drives axle is installed;
Movably be installed on the guard shield on described housing front portion, this guard shield is provided with saw blade through hole for saw blade is therefrom passed, this guard shield movably moves with respect to described housing between primary importance and the second place, in the time that guard shield is positioned at primary importance, described saw blade does not pass from saw blade through hole, in the time that guard shield is positioned at the second place, described saw blade passes from described saw blade through hole;
Between described guard shield and described housing, be provided with guard shield guiding mechanism, it is characterized in that: described guard shield guiding mechanism entirety is between described tool drives axle and described motor.
8. portable cutter according to claim 7, is characterized in that: described guard shield guiding mechanism comprises the guide rail being arranged on of described guard shield and described housing, and the locating part on another in both.
9. portable cutter according to claim 8, is characterized in that: the position of the corresponding described saw blade through hole of described guard shield is provided with saw blade host cavity, and the position that described saw blade host cavity closes on described saw blade through hole is provided with through hole.
10. portable cutter according to claim 9, it is characterized in that: described guard shield comprises the guard shield bottom that described saw blade through hole is set, described guard shield bottom has can be against the abutment face of workpiece, and described tool drives axle is positioned at described through hole and the described guard shield guiding mechanism centre position in described abutment face projection in the projection of described abutment face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010297621.2A CN102407381B (en) | 2010-09-21 | 2010-09-21 | Portable cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010297621.2A CN102407381B (en) | 2010-09-21 | 2010-09-21 | Portable cutting machine |
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| CN102407381A CN102407381A (en) | 2012-04-11 |
| CN102407381B true CN102407381B (en) | 2014-06-04 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537752B (en) * | 2012-07-13 | 2016-10-05 | 苏州宝时得电动工具有限公司 | Portable cutter |
| CN106378491A (en) | 2012-07-13 | 2017-02-08 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN110014190B (en) * | 2012-07-13 | 2021-09-07 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN104107949B (en) * | 2013-04-17 | 2016-08-17 | 苏州宝时得电动工具有限公司 | A kind of electrotrephine |
| JP6141951B1 (en) * | 2015-12-09 | 2017-06-07 | 株式会社アマダホールディングス | Circular saw |
| CN109202172A (en) * | 2017-06-30 | 2019-01-15 | 苏州宝时得电动工具有限公司 | Portable electric annular saw |
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| CN2885469Y (en) * | 2006-03-29 | 2007-04-04 | 王骥 | Work mechanism of cutting machine |
| CN201098810Y (en) * | 2007-06-12 | 2008-08-13 | 墩丰机械工业股份有限公司 | Foldable eye protecting cover supporting board device |
| CN201543903U (en) * | 2009-09-24 | 2010-08-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0011437D0 (en) * | 2000-05-12 | 2000-06-28 | Exact Precision Tools Limited | Power tool guard |
| CN101085478A (en) * | 2007-02-12 | 2007-12-12 | 王骥 | Composite saw with protecting cover opening device |
| CN201353800Y (en) * | 2009-02-06 | 2009-12-02 | 苏州宝时得电动工具有限公司 | Portable circular saw |
| CN201519800U (en) * | 2009-09-24 | 2010-07-07 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2885469Y (en) * | 2006-03-29 | 2007-04-04 | 王骥 | Work mechanism of cutting machine |
| CN201098810Y (en) * | 2007-06-12 | 2008-08-13 | 墩丰机械工业股份有限公司 | Foldable eye protecting cover supporting board device |
| CN201543903U (en) * | 2009-09-24 | 2010-08-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
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