CN201353800Y - Portable circular saw - Google Patents
Portable circular saw Download PDFInfo
- Publication number
- CN201353800Y CN201353800Y CNU2009200378950U CN200920037895U CN201353800Y CN 201353800 Y CN201353800 Y CN 201353800Y CN U2009200378950 U CNU2009200378950 U CN U2009200378950U CN 200920037895 U CN200920037895 U CN 200920037895U CN 201353800 Y CN201353800 Y CN 201353800Y
- Authority
- CN
- China
- Prior art keywords
- guard shield
- housing
- arc
- circular saw
- saw blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
- B27G19/04—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws for manually-operated power-driven circular saws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F5/00—Slotted or mortised work
- B27F5/02—Slotting or mortising machines tools therefor
- B27F5/023—Portable plate joiners
Abstract
The utility model provides a portable circular saw, which comprises a motor, a saw blade, a drive mechanism which is located between the motor and the saw blade and is used to transfer power, a shell which comprises a shell front part and a shell rear part, and a protective cap which is installed on the shell front part and comprises a protective cap bottom part, wherein the shell front part is used to contain the drive mechanism and at least a part of the saw blade, the shell rear part is used to contain the motor, the protective cap bottom part is provided with an opening for the saw blade to be exposed for manufacturing workpieces, the protective cap can move from a first position to a second position corresponding to the shell, when the protective cap is in the first position, the saw blade is not exposed from the opening, when the saw blade is on the second position, the saw blade is at least partially exposed from the opening, an arc-shaped guide rail is arranged on one of the protective cap and the shell front part, an adapting part is arranged on the other of the protective cap and the shell front part, and the adapting part and the arc-shaped guide rail are matched and can move along the arc-shaped guide rail for enabling the protective cap to be moved between the first position and the second position.
Description
Technical field
The utility model relates to a kind of power tool, especially relates to a kind of portable circular saw.
Background technology
Traditional annular saw 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, during work, the moving rotatable saw blade bottom of exposing of guard shield, the shortcoming of this traditional electrical annular saw are that volume ratio is big and relatively more clumsy, process that some are smaller, just not too suitable during relatively thin workpiece.
European patent EP ' number to have disclosed a kind of volume less for 1177868B1, light and handy portable electric circular saw, this electric circular saw comprises a less saw blade, be used to drive the motor of saw blade, casing, the casing front portion is used for accommodating transmission mechanism etc., the casing rear portion is used for accommodating motor etc., this little portable electric circular saw is not provided with independent handle, the rear portion of casing promptly can be used as handle and uses, this electric circular saw does not have the independent guard shield of deciding, the casing front portion is contained in saw blade top wherein, this casing front portion just is equivalent to the guard shield of deciding of traditional electrical annular saw, an independent moving guard shield movably is installed on the casing front portion, this moving guard shield comprise guard shield bottom and four from the bottom upwardly extending sidewall, be provided with opening bottom the guard shield and be used to make that saw blade therefrom stretches out, moving shroud ring is provided with around the housing front portion, thereby and with respect to the anterior removable feasible saw blade depth difference of exposing of casing.This electric circular saw structure is simple relatively, relatively is fit to the thin workpiece of cutting.
But the anterior outer wall of the casing of the electric circular saw that discloses for EP ' 1177868B1 number is provided with the linear pattern chute, moving guard shield inwall is provided with slide block, slide block cooperates with chute makes moving guard shield to slide with respect to casing, because chute is a linear pattern, so moving guard shield also is a rectilinear motion with respect to the motion of casing front portion, the connected mode of this linear pattern chute and slide block makes in the use, operator's hand must be near the housing front portion, and make as much as possible the point of application be arranged in chute directly over so that slide block is more smooth and easy in the motion of chute, but can make like this grip very uncomfortable.
In addition, be to cooperate by chute and slide block between electric circular saw guard shield that discloses for EP ' 1177868B1 number and the casing, relative motion between the two is for sliding, and frictional force between the two is force of sliding friction, this force of sliding friction is relatively big, makes that the operator relatively requires great effort in operating process.
The utility model content
Technical problem to be solved in the utility model provides a kind of comfortable portable circular saw of operating.
The technical problem that the utility model further will solve provides the portable circular saw that has between guard shield and housing in a kind of use than less friction.
In order to address the above problem, the utility model provides a kind of portable circular saw to comprise motor; Saw blade; The transmission mechanism that between motor and saw blade, is used for transferring power; Housing, described housing comprise the anterior and housing rear portion of housing; The housing front portion is used for accommodating described transmission mechanism and to the small part saw blade, the housing rear portion is used for accommodating described motor; Be installed on the guard shield of housing front portion, this guard shield comprises the guard shield bottom, guard shield bottom is provided with opening and is used for saw blade and therefrom exposes with processing work, described guard shield with respect to housing movably from the primary importance to the second place, when guard shield is positioned at primary importance, saw blade is not exposed to opening, and when guard shield was positioned at the second place, saw blade was to the opening that is exposed to of small part; 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 this mating part cooperates with described arc-shaped guide rail to move along described arc-shaped guide rail makes described guard shield move between the primary importance and the second place.
In the portable circular saw that the utility model disclosed, because anterior among both one of guard shield and housing is provided with arc track, among both another is provided with the mating part, this connected mode makes that guard shield and the relative motion between the two of housing front portion are arcuate movement, thereby the position that the operator holds in operating process does not need too close housing front portion, like this can be more laborsaving, and operate comfortable.
Preferred implementation of the present utility model is also following several:
Preferably, arc-shaped guide rail of the present utility model is an arc groove, and the mating part is a projection, and this projection is contained in the arc groove and can moves within it.
Preferably, shield encompasses of the present utility model is lived the anterior setting of housing, guard shield has the guard shield inner surface, the housing front portion has the housing forward outer surface, the guard shield inner surface is adjacent with the housing forward outer surface, arc-shaped guide rail is located among both one of guard shield inner surface or housing forward outer surface, and the mating part is located among both another of guard shield inner surface or housing forward outer surface.
Preferably, arc-shaped guide rail of the present utility model is located on the guard shield inner surface, and projection is located on the housing forward outer surface.
Preferably, arc-shaped guide rail of the present utility model can be an arc groove, and the mating part can be a hemisphere jut.
Preferably, arc-shaped guide rail of the present utility model is an arc groove, the mating part is a spherical, guard shield inner surface or housing forward outer surface are provided with groove, the shape of this groove and the shape of spherical are complementary, being used for partly accommodating spherical, is matched in clearance between groove and the spherical, makes this spherical to roll in this groove.
Because be to use spherical and arc groove to cooperate between housing and the guard shield, spherical rolls in arc groove, frictional force between the two is force of rolling friction, and force of rolling friction is less relatively, can be more laborsaving in the operating process thereby make.
Preferably, arc-shaped guide rail of the present utility model is an arc groove, the mating part is a spherical, the center of spherical is equipped with pin, and the two ends of pin are exposed to spherical, and spherical can rotate around pin, guard shield inner surface or housing forward outer surface are provided with groove, this groove comprises that the hemispherical groove that is positioned at mid portion and the cylindrical recesses that is positioned at both sides, spherical are accommodated in the hemispherical groove and can rotate within it, the two ends of pin place in the cylindrical recesses and with cylindrical recesses be interference fit.
Preferably, spherical of the present utility model is made by metal material.
Preferably, pin of the present utility model is made by metal material.
Preferably, arc-shaped guide rail of the present utility model is an arc groove, the mating part is a cylindrical rollers, the anterior outer wall of housing is provided with groove, the shape of this groove and the shape of cylindrical rollers are complementary, be used for partly accommodating described cylindrical rollers, and make this cylindrical rollers in this groove, to roll.
Preferably, arc-shaped guide rail of the present utility model is the arc gusset, and the mating part is a groove, this arc gusset can to small part be contained in the groove and movably with this groove fit.
Preferably, arc groove of the present utility model is located on the guard shield inner surface, and spherical is located on the housing forward outer surface.
Preferably, arc groove of the present utility model roughly extends obliquely from the guard shield bottom.
Preferably, arc-shaped guide rail of the present utility model and mating part comprise at least two respectively, and these at least two arc-shaped guide rails are provided with along the making progress in week of another in described guard shield inner surface and the described housing forward outer surface accordingly at interval along at least two mating parts upwards are set in one week in described guard shield inner surface and the described housing forward outer surface at interval.
Preferably, guard shield of the present utility model comprises four sidewalls, these four sidewalls extend upward from the guard shield bottom, arc groove has four, these four arc grooves are distributed on two relative sidewalls of guard shield and are positioned at the both sides of saw blade, and two arc grooves that are provided with at interval distribute on each sidewall of guard shield.
Preferably, spherical of the present utility model is provided with four groups along anterior the circumferentially spaced of outer wall of housing, and these four groups of sphericals cooperate with corresponding arc groove respectively.
Preferably, every group of spherical of the present utility model along on the arc groove bearing of trend at interval be provided with two.
Preferably, portable circular saw of the present utility model comprises that depth adjustment is used for regulating depth of cut.
Preferably, depth adjustment of the present utility model comprises stopper, and stopper movably is located on the housing forward outer surface, and guard shield has top edge, set up the degree of depth after, the guard shield top edge is used for limiting moving of guard shield against living stopper.
Preferably, depth adjustment of the present utility model comprises the arc opening that is opened on the anterior sidewall of housing, and the bearing of trend and the radian of the bearing of trend of this arc opening and radian and arc-shaped guide rail are roughly the same, and described stopper can move along arc opening.
Preferably, stopper of the present utility model comprises substrate, and this substrate is positioned at the inboard of housing front portion, the pivotable connection of the relative substrate of spanner, spanner is positioned at the outside of housing front portion, described spanner has two states, and when first state, spanner is in the position of closing, this moment, stopper can be fixed in a certain position of arc opening, when second state, the position that spanner is in out, this moment, stopper can move relative to arc opening
Preferably, the contact-making surface of spanner of the present utility model and casing forward outer surface is a cam surface.
Preferably, a side of arc opening of the present utility model is marked with corresponding scale, is provided with pointer between spanner and substrate, the corresponding scale of pointed, and pointer can move with stopper.
Preferably, portable circular saw of the present utility model comprises resilience mechanism, and this resilience mechanism is used to make the relative housing of guard shield to move to primary importance from the second place.
Preferably, resilience of the present utility model mechanism comprises helical spring and pin, a helical spring end is against gear box casing, the helical spring other end compresses pin, one end of pin is connected with helical spring, the other end of pin is against living guard shield, and spring compresses power for one on pin towards the direction of guard shield.
Preferably, resilience of the present utility model mechanism is a torsion spring.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further detailed description.
The stereogram of the portable electric circular saw that Fig. 1 is disclosed for the utility model first embodiment.
Plane when Fig. 2 does not install guard shield for the portable electric circular saw that Fig. 1 disclosed.
Cut-away view when Fig. 3 does not install guard shield for the portable electric circular saw that Fig. 1 disclosed.
Fig. 4 A is the stereogram of the guard shield of the portable electric circular saw that Fig. 1 disclosed.
The stereogram that Fig. 4 B sees from another angle for the guard shield among Fig. 4 A.
Fig. 5 is the stereogram of portable electric circular saw when saw blade exposes guard shield that Fig. 1 disclosed.
Fig. 6 A is the three-dimensional exploded view of the portable electric circular saw that Fig. 1 disclosed.
The stereogram of seeing from opposite side when Fig. 6 B does not install guard shield for the portable electric circular saw that Fig. 1 disclosed.
The portable electric circular saw that Fig. 6 C is disclosed for Fig. 6 A is at the partial enlarged drawing at A place.
Fig. 7 is portable electric circular saw that Fig. 1 the disclosed stereogram when the position that spanner is in out.
Fig. 8 is the stereogram of the stop block of the portable electric circular saw that Fig. 7 disclosed.
Cut-away view when Fig. 9 is opened for portable electric circular saw that Fig. 1 disclosed is equipped with guard shield and gear-box.
The part schematic diagram of the portable electric circular saw that Figure 10 is disclosed for the utility model second embodiment.
Among the figure:
20. portable electric circular saw 22. housings 24. housing front portions
26. housing rear portion 28. first ends, 30. 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
32. power line 34. saw blades 36. motors
36a. motor output shaft 36b. fan 36c. electric machine support
37. switch 38. wind holes 42. gear-boxes
44. gear box casing 46. gear transmission mechanisms 48. guard shields
50. guard shield bottom 52a-d. guard shield sidewall 54. saw blade through holes
56. cavity 57. top edge 58a-d. arc grooves
60a-d. housing sidewall 62. sphericals 64. pins
66. groove 66a. hemispherical groove 66b. cylindrical recesses
70. depth adjustment 72. stopper 76. substrates
78. upper surface 80. protruded stigmas 82. pins
84. spanner 86. operating portions 88. connecting portions
90. cam bit 92. through holes 94. cam surfaces
96. lug boss 98. pointers 100. arc openings
102. scale value 104. fixed parts 106. instruction units
108. connecting portion 110. first cam surfaces 112. second cam surfaces
114. stop surface 116. resilience mechanisms 118. helical springs
120. pin 122. pilot holes 124. diameters are than small end
126. the spheric end 116a. resilience 118a. of mechanism torsion spring
128. stiff end 130. compresses end 132. middle interconnecting pieces
134. protruded stigma 136. card posts
The specific embodiment
Embodiment one
With reference to Fig. 1, a kind of portable electric circular saw 20 comprises housing 22, and this housing 22 comprises housing anterior 24 and housing rear portion 26.Housing 22 can be a moulding, and can be made of two and half shells.Housing rear portion 26 comprises first end 28 and second end, 30, the first ends 28 and anterior 24 adjacency of housing, and second end 30 is away from housing anterior 24 and be connected with power line 32 usually.
With reference to Fig. 2, housing rear portion 26 roughly extends straight, the longitudinal extending axis at housing rear portion 26 is X, extend from first end, 28 relative housing rear portion 26 bendings at housing rear portion 26 housing front portion 24, the longitudinal extending axis of housing front portion 24 is Y, the angle a of the longitudinal extending axis X at the longitudinal extending axis Y of housing front portion 24 and housing rear portion 26 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 electric circular saw 20 comprise be used for processing work saw blade 34 and be used for driving the motor 36 of this saw blade 34, motor 36 is contained in the housing rear portion 26, thereby motor 36 electrically connects with power line 32 and can be connected on the AC power (not shown), and motor 36 also can be to power by dc-battery certainly.Portable electric circular saw 20 also comprises switch 37, and switch 37 electrically connects with motor 36 and is used for controlling the unlatching of motor 36 and stopping.
First end, 28 places that motor 36 closes on housing rear portion 26 are provided with motor output shaft 36a, and fan 36b is installed on the motor output shaft 36a, and motor 36 closes on 26 second ends, 30 places, housing rear portion and is provided with electric machine support 36c and is used for motor 36 is supported in housing rear portion 26.On the housing rear portion 26 near first end 28 be equipped with wind hole 38 near second end, 30 places and be used for cooling motor 36.
The saw blade plane almost parallel of motor output shaft 36a and saw blade 34 is used for transmission of power to the saw blade 34 of motor 36 is driven saw blade 34 motions thereby be provided with transmission mechanism between motor output shaft 36a and saw blade 34.In the present embodiment, transmission mechanism is a gear-box 42, gear-box 42 comprises gear box casing 44 and gear transmission mechanism 46 (with reference to Fig. 9), gear transmission mechanism 46 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 Fig. 9), gear-box 42 is contained in housing front portion 24, and the top of saw blade 34 is contained in housing front portion 24.
Housing rear portion 26 is simultaneously also as operator's handle usefulness, and the operator holds housing rear portion 26 with mobile portable electric circular saw 20 in operating process.Can be provided with encapsulate on this housing rear portion 26 so that the operator grip pleasant, thereby reduce fatigue.
With reference to Fig. 1, Fig. 4 A and Fig. 4 B, portable electric circular saw 20 comprises guard shield 48, guard shield 48 around surround housing front portion 24, guard shield 48 comprises guard shield bottom 50, guard shield bottom 50 contacts with surface of the work in the course of work, four guard shield sidewall 52a-d surround and extend upward from guard shield bottom 50 in a week, guard shield bottom 50 is provided with saw blade through hole 54, saw blade through hole 54 is used to make saw blade 34 therefrom to pass, cavitys 56 are formed on four guard shield sidewall 52a-d and guard shield bottom 50, and cavity 56 is used for the bottom of case anterior 24 and saw blade 34.Guard shield sidewall 52a comprises a top edge 57, and the top edge 57 of sidewall 52a is a limit away from guard shield bottom 50.The concrete effect of top edge 57 can be described in detail in the back.
With reference to Fig. 1 and Fig. 5, be connected with the mating part (about arc track and mating part by arc-shaped guide rail between guard shield 48 and the housing front portion 24, 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 48 relative housing front portions 24 movably from the primary importance to the second place, when guard shield 48 is positioned at primary importance, saw blade 34 does not expose (with reference to Fig. 1) from saw blade through hole 54, when guard shield 48 is positioned at the second place, saw blade 34 is to the exposing from saw blade through hole 54 of small part (with reference to Fig. 5), at this moment, electric circular saw 20 can be used to processing work.
With further reference to Fig. 4 A and Fig. 4 B, guard shield sidewall 52a and 52b be over against setting, and guard shield sidewall 52c and 52d be over against setting, and when guard shield 48 is installed on the housing front portion 24, guard shield sidewall 52a and 52b and saw blade 34 almost parallels, and be positioned at the both sides of saw blade 34.In the present embodiment, arc-shaped guide rail is the arc groove 58a that is located on the inner surface of guard shield sidewall 52a, 58b and be located at arc groove 58c on the inner surface of guard shield sidewall 52b, 58d.Arc groove 58a-d roughly extends obliquely from guard shield bottom 50.Arc groove 58a-d is provided with at interval along the circumferential direction of guard shield sidewall 52a and 52b inner surface.The center of circle corresponding with the circular arc at arc groove 58b place, the center of circle of the circular arc correspondence at arc groove 58a place is roughly the same center of circle.The center of circle corresponding with the circular arc at arc groove 58d place, the center of circle of the circular arc correspondence at arc groove 58c place is roughly the same center of circle.
With reference to Fig. 6 A, Fig. 6 B and Fig. 6 C, housing front portion 24 comprises four housing sidewall 60a-d, respectively with the corresponding cooperation of four guard shield sidewall 52a-d of guard shield 48, in the present embodiment, the mating part is located on the outer surface of housing sidewall 60a and 60b and with arc groove 58a-d and is cooperated.The mating part is generally projection, and projection is contained in the arc groove 58a-d and can moves within it.
In the present embodiment, the mating part comprises spherical 62, the center of spherical 62 is provided with through hole, pin 64 passes through hole, the two ends of pin 64 are exposed to through hole, cooperating between the through hole of pin 64 and spherical 62 is matched in clearance, thereby make spherical 62 to rotate around pin 64, sidewall 60a and 60b are provided with the groove 66 that is used for accommodating the mating part, the mid portion of groove 66 is hemispherical groove 66a, what be used for part accommodates spherical 62, and the two ends of groove 66 are provided with the cylindrical recesses 66b that is complementary with the two ends shape of exposing the pin 64 of through hole.Being contained in the hemispherical groove 66a of spherical 62 parts, the two ends of pin 64 are contained in the cylindrical recesses 66b, between spherical 62 and the hemispherical groove 66a certain clearance are arranged, and this docked mode makes spherical 62 to rotate in hemispherical groove 66a.In the present embodiment, be interference fit between the two ends of pin 64 and the cylindrical recesses 66b, thereby make that whole mating part can not be easy to fall down from housing front portion 24.
Certainly can be to fixedly connected between pin 64 and the spherical 62, and can be matched in clearance also between the two ends of pin 64 and the cylindrical recesses 66b, make pin 64 and spherical 62 rotate together.
With reference to Fig. 7 and Fig. 8, portable electric circular saw comprises that depth adjustment 70 is used for regulating depth of cut, and depth adjustment 70 comprises stopper 72, and stopper 72 movably is installed on the anterior sidewall 60a of housing.
With protruded stigma 80 a distance separately, be provided with a lug boss 96, extend upward from substrate 76 upper surfaces 78 with protruded stigma 80 the same lug bosses 96, be fixedly coupled a pointer 98 on the lug boss 96, pointer 98 is used to refer to the degree of depth of setting.
Pointer 98 comprises fixed part 104, instruction unit 106 and connecting portion 108.Fixed part 104 is fixed in pointer 98 on the lug boss 96 by screw, rivet etc.Instruction unit 106 is pointed on the scale value 102 of arc opening 100 1 sides, thereby shows the saw blade depth that current setting is good.Connecting portion 108 is used to be connected and fixed portion 104 and instruction unit 106.
The cam surface of being located on the spanner 84 94 contacts with sidewall 60a outer surface.Cam surface 94 comprises first cam surface 110 and second cam surface 112.When first cam surface 110 contacted with sidewall 60a outer surface, spanner was in released state, and this moment, stopper 72 can move along arc opening 100.When second cam surface 112 contacted with sidewall 60a outer surface, spanner 84 was in locking state, and this moment, stopper 72 was fixed with respect to sidewall 60a, and stopper 72 is not removable with respect to arc opening 100.Spanner 84 comprises stop face 114.
In the work, when needing to regulate the degree of depth, lift spanner 84 earlier, the position that spanner is in out, this moment, first cam surface 110 contacted with sidewall 60a outer surface, along arc opening 100 slip stopper 72, made pointer 98 point to the deep calibration value 102 that needs.After having set up the degree of depth, depress spanner 84, make spanner 84 be in the position of closing, this moment, second cam surface 112 contacted with sidewall 60a outer surface, and this moment, stopper 72 was locked in a certain position of arc opening 100.During cut workpiece, being pressed on the surface of the work of guard shield bottom 50 parts, the operator holds housing rear portion 26, and impose on 26 1 pressure in housing rear portion, this moment, housing 22 relative guard shields 48 were along arcuate movement, top edge 57 until guard shield 48 contacts with the stop face 114 of spanner 84, exposes the saw blade 34 of the certain depth of guard shield 48 and just can process.
With reference to Fig. 9, portable electric circular saw 20 comprises resilience mechanism 116, and this resilience mechanism 116 is used to make the relative housing of guard shield 48 22 to move to primary importance from the second place.In the present embodiment, resilience mechanism 116 comprises helical spring 118 and pin 120, gear box casing 44 is provided with pilot hole 122 and is used for accommodating helical spring 118 and part pin 120, one end of helical spring 118 props up gear box casing 44, pin 120 comprises that a diameter is than small end 124 and a spheric end 126, diameter is than being arranged with helical spring 118 on the small end 124, spheric end 126 is against guard shield bottom 50, and helical spring 118 compresses power for 120 1 on pin towards the direction of guard shield bottom 50.Because pin 120 has a spheric end 126, this spheric end 126 contacts with guard shield bottom 50, when helical spring 118 compresses pin 120, the power of compressing that the spheric end 126 of pin 120 puts on guard shield bottom 50 remains the direction perpendicular to guard shield, can compare firm like this and is not easy to make pin to block.
Embodiment two
With reference to Figure 10, present embodiment and embodiment one are basic identical, and different is that portable electric circular saw 20 comprises the 116a of resilience mechanism, and the 116a of this resilience mechanism comprises torsion spring 118a.The middle interconnecting piece 132 that torsion spring 118a comprises stiff end 128, compresses end 130 and be used to be connected and fixed end 128 and compress end 130.Housing front portion 24 is provided with protruded stigma 134, connecting 132 ones in the middle of the torsion spring 118a is sheathed on the protruded stigma 134, be provided with two lesser calorie posts 136 apart from protruded stigma 134 a distance, the stiff end 128 of torsion spring 118a is arranged between two lesser calorie posts 136, and the end 130 that compresses of torsion spring compresses guard shield bottom 50.
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 cylindrical grooves, the shape of this cylindrical grooves and the shape of cylindrical rollers are complementary, be used for partly accommodating described cylindrical rollers, and make this cylindrical rollers in this cylindrical grooves, 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 (10)
1. portable circular saw comprises:
Motor;
Saw blade;
The transmission mechanism that between motor and saw blade, is used for transferring power;
Housing, described housing comprise the anterior and housing rear portion of housing; The housing front portion is used for accommodating described transmission mechanism and to the small part saw blade, the housing rear portion is used for accommodating described motor;
Be installed on the guard shield of housing front portion, this guard shield comprises the guard shield bottom, guard shield bottom is provided with opening and is used for saw blade and therefrom exposes with processing work, described guard shield with respect to housing movably from the primary importance to the second place, when guard shield is positioned at primary importance, saw blade is not exposed to opening, and when guard shield was positioned at the second place, saw blade was to the opening that is exposed to of small part;
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 this mating part cooperates with described arc-shaped guide rail to move along described arc-shaped guide rail makes described guard shield move between the primary importance and the second place.
2. portable circular saw according to claim 1, it is characterized in that: the anterior setting of housing is stated in described shield encompasses residence, described guard shield has the guard shield inner surface, described housing front portion has the housing forward outer surface, the guard shield inner surface is adjacent with the housing forward outer surface, described arc-shaped guide rail is located on the guard shield inner surface, and described mating part is located on the housing forward outer surface.
3. portable circular saw according to claim 2, it is characterized in that: described arc-shaped guide rail is an arc groove, described mating part is a spherical, the center of described spherical is equipped with pin, the two ends of pin are exposed to spherical, spherical can rotate around pin, described housing forward outer surface is provided with groove, this groove comprises hemispherical groove that is positioned at mid portion and the cylindrical recesses that is positioned at both sides, spherical is accommodated in the hemispherical groove and can rotates within it, the two ends of pin place in the cylindrical recesses and with cylindrical recesses be interference fit.
4. portable circular saw according to claim 3, it is characterized in that: described guard shield comprises four sidewalls, these four sidewalls extend upward from the guard shield bottom, described arc groove has four, these four arc grooves are distributed on two relative sidewalls of guard shield and are positioned at the both sides of saw blade, and two arc grooves that are provided with at interval distribute on each sidewall of guard shield.
5. portable circular saw according to claim 4 is characterized in that: described spherical is provided with four groups along anterior the circumferentially spaced of outer wall of housing, and these four groups of sphericals cooperate with corresponding arc groove respectively.
6. portable circular saw according to claim 5 is characterized in that: every group of spherical along on the arc groove bearing of trend at interval be provided with two.
7. portable circular saw according to claim 1, it is characterized in that: described portable circular saw comprises that depth adjustment is used for regulating depth of cut, described depth adjustment comprises stopper, described stopper movably is located on the housing front portion, described guard shield has top edge, after having set up the degree of depth, the guard shield top edge is used for limiting moving of guard shield against living stopper.
8. portable circular saw according to claim 1 is characterized in that: described portable circular saw comprises resilience mechanism, and this resilience mechanism is used to make the relative housing of guard shield to move to primary importance from the second place.
9. portable circular saw according to claim 8, it is characterized in that: described transmission mechanism comprises gear box casing and is contained in the interior gear transmission mechanism of this gear box casing, described resilience mechanism comprises helical spring and pin, a helical spring end is against gear box casing, the helical spring other end compresses pin, one end of pin is connected with helical spring, the other end of pin compresses guard shield, helical spring compresses power for one on pin towards the direction of guard shield, and described pin compresses an end of guard shield for spherical.
10. portable circular saw according to claim 8, it is characterized in that: described resilience mechanism is a torsion spring, described housing front portion is provided with protruded stigma, the centre of the torsion spring portion of going in ring is sheathed on the protruded stigma, be provided with two lesser calorie posts apart from protruded stigma a distance, one end of torsion spring is arranged between two lesser calorie posts, and the other end of torsion spring compresses guard shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200378950U CN201353800Y (en) | 2009-02-06 | 2009-02-06 | Portable circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200378950U CN201353800Y (en) | 2009-02-06 | 2009-02-06 | Portable circular saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353800Y true CN201353800Y (en) | 2009-12-02 |
Family
ID=41410140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200378950U Expired - Lifetime CN201353800Y (en) | 2009-02-06 | 2009-02-06 | Portable circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353800Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011026303A1 (en) * | 2009-09-07 | 2011-03-10 | 宁波捷美进出口有限公司 | Hand-held circular saw guard locking mechanism |
| WO2011026304A1 (en) * | 2009-09-07 | 2011-03-10 | 宁波捷美进出口有限公司 | Cutting depth adjusting and locking mechanism of hand-held circular saws |
| CN102407385A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407381A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407386A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407387A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN101786282B (en) * | 2009-01-22 | 2012-07-25 | 苏州宝时得电动工具有限公司 | Portable circular saw |
-
2009
- 2009-02-06 CN CNU2009200378950U patent/CN201353800Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786282B (en) * | 2009-01-22 | 2012-07-25 | 苏州宝时得电动工具有限公司 | Portable circular saw |
| WO2011026303A1 (en) * | 2009-09-07 | 2011-03-10 | 宁波捷美进出口有限公司 | Hand-held circular saw guard locking mechanism |
| WO2011026304A1 (en) * | 2009-09-07 | 2011-03-10 | 宁波捷美进出口有限公司 | Cutting depth adjusting and locking mechanism of hand-held circular saws |
| CN102407385A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407381A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407386A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407387A (en) * | 2010-09-21 | 2012-04-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN102407385B (en) * | 2010-09-21 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201353800Y (en) | Portable circular saw | |
| CN201519800U (en) | Portable cutting machine | |
| CN101786185B (en) | Portable cutter | |
| CN102029431A (en) | Portable cutting machine | |
| CN104797381B (en) | Electric tool with rotatable head end | |
| CN201543903U (en) | Portable cutting machine | |
| CN102275183A (en) | Portable circular saw | |
| CN102407381A (en) | Portable cutting machine | |
| CN102029430B (en) | Portable cutting machine | |
| CN201664788U (en) | Portable cutting machine | |
| CN101786282B (en) | Portable circular saw | |
| CN109483366A (en) | Numerically-controlled precise double-station grinder | |
| KR101522826B1 (en) | Cutting apparatus including secondary safety cover | |
| JP5463907B2 (en) | Electric tool | |
| CN217513914U (en) | Novel shaver with rotatably adjustable cutter head | |
| CN212918690U (en) | Drill bit grinding machine | |
| US11890713B2 (en) | Power tool and cover | |
| CN210849625U (en) | Grinding and polishing tool storage library and replacing system suitable for robot | |
| CN110815319B (en) | Adjustable device of tailorring size and wastepaper processing of stock form | |
| CN112895787A (en) | Handheld engraving tool | |
| CN102407387A (en) | Portable cutting machine | |
| CN208116858U (en) | It is a kind of can automatic conversion connector carving and milling machine | |
| CN114951820B (en) | Multifunctional mini saw | |
| CN102407385A (en) | Portable cutting machine | |
| CN110656562A (en) | Full-automatic integral type groover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Portable circular saw having light irradiation unit Effective date of registration: 20140515 Granted publication date: 20091202 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180416 Granted publication date: 20091202 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: Baoshide Electric Tools Co., Ltd., Suzhou Registration number: 2014990000362 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091202 |