CN102581376B - Reciprocating cutting tool - Google Patents
Reciprocating cutting tool Download PDFInfo
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- CN102581376B CN102581376B CN201110008496.3A CN201110008496A CN102581376B CN 102581376 B CN102581376 B CN 102581376B CN 201110008496 A CN201110008496 A CN 201110008496A CN 102581376 B CN102581376 B CN 102581376B
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Abstract
The invention provides a reciprocating cutting tool for cutting workpieces, including: a handle; a shell, pivotally connected with the handle, and being capable of operatively rotating relative to the handle to provide a first working state and a second working state to the reciprocating cutting tool; a motor, received inside the shell; and a saw blade, driven by the motor to do reciprocating motion. The area of the reciprocating cutting tool resisting against the surface of a workpiece in the second working state is greater than the area against the surface of the workpiece in the first working state. In the invention, when the reciprocating cutting tool is in the second working state, cutting of the workpiece is quite stable and reliable, the reciprocating cutting tool is suitable for fine cutting tasks; when the reciprocating cutting tool is in the first working state, as the area against the surface of the workpiece is relatively small, the reciprocating cutting tool is suitable for rough processing, such as cutting objects quickly. With such design, the overall performance of the reciprocating cutting tool is improved, and great convenience is brought to users.
Description
Technical field
The present invention relates to a kind of reciprocal cutting tool, especially a kind of reciprocal cutting tool of hand-held.
Background technology
Reciprocating saw and sweep-saw are all the one in reciprocal cutting tool, their operation principle is also substantially the same, be all to drive reduction gearing by motor, drive reciprocating lever to produce and move back and forth, making to be connected to the free-ended saw blade of reciprocating lever can carry out reciprocating cutting operation to workpiece.Difference is only that sweep-saw is resisted against surface of the work cutting by a base plate, and the gravity of sweep-saw is born by workpiece, and reciprocating saw is to be cut by user's handling the gravity of bearing reciprocating saw.
Because the difference of working method, sweep-saw volume is little and be used for comparatively meticulous operation, and it often has a very large gripper shoe, thereby provides reliable and stable support for cutting work; And reciprocating saw volume is larger, and be used for rough machined operation, as simple cut-out workpiece, it is very little that its gripper shoe often designs.
In the course of the work, user usually need to replace replacing between these two kinds of instruments, loaded down with trivial details and affect operating efficiency, has brought very big inconvenience to user.Some production firms have released the multifunctional saw that can change between reciprocating saw and sweep-saw, but because it is less for the gripper shoe against surface of the work, when it is used as sweep-saw, could not obtain stable support, make cutting accuracy lower, cannot meet user's demand.
Summary of the invention
The object of the present invention is to provide a kind of reciprocal cutting tool with two duties, and there is comparatively comfortable stable operation sense.
For achieving the above object, the invention provides a kind of reciprocal cutting tool, for cut workpiece, comprising: handle; With the housing that described handle pivotable is connected, it is exercisable with respect to described handle rotation, makes described reciprocal cutting tool have the first duty and the second duty; Be contained in the motor in described housing; The saw blade being moved reciprocatingly by the driving of described motor; The area that described reciprocal cutting tool is resisted against surface of the work in the second duty is greater than it and is resisted against in the first duty the area of surface of the work.
Preferably, described housing has the first abutment face, described handle has the second abutment face, when described reciprocal cutting tool is during in described the first duty, only by described the first abutment face against described workpiece, when described reciprocal cutting tool is during in described the second duty, described the first abutment face and described the second abutment face are jointly against described workpiece.
Preferably, when described reciprocal cutting tool is during in described the second duty, described the first abutment face and described the second abutment face are coplanar against described workpiece.
Preferably, when described reciprocal cutting tool is during in described the first duty, described the first abutment face and described the second abutment face intersect not coplanar.
Preferably, when described reciprocal cutting tool is during in described the first duty, described the first abutment face is vertical with described the second abutment face.
Preferably, described housing has the first bracing frame, and described the first abutment face is positioned on described the first bracing frame, and described handle comprises grip part and has the second bracing frame of described the second abutment face.
Preferably, described the second bracing frame have can against workpiece against plate, and describedly on plate, be provided with fan component, described fan component is for carrying out drifting dust during in the second duty when described reciprocal cutting tool.
Preferably, described fan component is driven by independent fan electromotor.
Preferably, described the second bracing frame have can against workpiece against plate, and the described power brick against accommodating promising described fan component and the power supply of described motor on plate.
Preferably, described power brick is between described the second abutment face and described grip part.
Preferably, described have the resettlement section of extending along longitudinally and partly accommodate described power brick against plate, and the bearing of trend of described resettlement section is vertical with described electrical axis.
Preferably, described resettlement section is inserted in described power brick one end from described resettlement section back to described saw blade.
Preferably, described the second bracing frame is provided with backing plate towards the surface of workpiece, and described the second abutment face is the surface of described backing plate towards workpiece.
Preferably, the material of described backing plate is plastics or metal.
Preferably, in the time that described reciprocal cutting tool is converted to described the second duty from described the first duty, its center of gravity can be along the radially close described handle of described electrical axis.
Preferably, when described reciprocal cutting tool is during in described the first duty, described the first abutment face is parallel with described the second abutment face not coplanar.
Reciprocal cutting tool in the present invention has the first duty and the second duty, and be greater than it and be resisted against in the first duty the area of surface of the work by the area that the second duty is resisted against surface of the work, cut workpiece can be highly stable reliable in the time of the second duty to make it, be applicable to carry out meticulous cutting work, and described reciprocal cutting tool is relatively little owing to being resisted against the area of surface of the work in the time of the first duty, is applicable to the roughing such as fast shut-off object.The overall performance that has improved reciprocal cutting tool is so set, and has promoted operational comfort, bring great convenience to user.
Brief description of the drawings
The side view of the reciprocal cutting tool that Fig. 1 provides for the first embodiment, now, described reciprocal cutting tool is in the first duty;
The side view of the reciprocal cutting tool that Fig. 2 provides for the first embodiment, now, described reciprocal cutting tool is in the second duty;
Fig. 3 is the perspective exploded view of reciprocal cutting tool in Fig. 1;
Fig. 4 be in Fig. 2 reciprocal cutting tool along the part cross-sectional schematic of straight line I-I;
Fig. 5 is the cross-sectional schematic that the retaining mechanism of reciprocal cutting tool in Fig. 1 is in the lock state;
Fig. 6 is retaining mechanism in Fig. 5 cross-sectional schematic in release conditions;
Fig. 7 is the side view of the connecting axle of retaining mechanism in Fig. 5;
The side view of the reciprocal cutting tool that Fig. 8 provides for the second embodiment, now, described reciprocal cutting tool is in the first duty;
The schematic perspective view of the reciprocal cutting tool that Fig. 9 provides for the second embodiment, now, described reciprocal cutting tool is in the second duty;
Figure 10 is the schematic perspective view of the reciprocal cutting tool in Fig. 9, and wherein, the fan resettlement section of reciprocal cutting tool is cut open and exposed inner fan component;
Figure 11 is the schematic perspective view of reciprocal cutting tool in Fig. 9, and now, described reciprocal cutting tool is in inversion state;
Figure 12 is the side view of reciprocal cutting tool in Fig. 9, and wherein, the air outlet part of the fan component of reciprocal cutting tool is broken away.
Related elements reference numeral in diagram is as follows:
10, reciprocal cutting tool 11, handle 12, power brick
13, housing 14, retaining mechanism 15, the first bracing frame
16, limited bolt 17, saw blade 18, button
19, main body 20, installation portion 21, the first gripper shoe
23, the first abutment face 25, motor 27, transmission component
29, reciprocating lever 31, saw blade chuck 33, driven wheel
35, reduction gearing 37, gear shaft 39, eccentric shaft
41, electric machine casing 43a, the first transmission housing 43b, the second transmission housing
45, grip part 47, switch 49, the second bracing frame
51, the first support arm 53, the second support arm 55, against plate
56, the second abutment face 57, locating part 58, smooth surface
59, counterpart 60, operating parts resettlement section 61, locking member
63, operating parts 64, rotating shaft 65, lid
67, connecting axle 69, connecting axle limiting section 71, eccentric part
73, connecting portion 75, hole 100, reciprocal cutting tool
111, handle 112, power brick 113, housing
115, the first bracing frame 117, saw blade 129, reciprocating lever
145, grip part 146, gripping space 147, switch
155, against plate 156, the second abutment face 159, mating part
163, operating parts 165, lid 168, accepting groove
170, operating side 176, resettlement section 177, power brick resettlement section
179, fan resettlement section 181, fan component 183, fresh air inlet
184, exhaust vent 185, fan hub 187, turbine
189, backing plate
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Refer to Fig. 1, first embodiment of the invention provides a kind of reciprocal cutting tool 10.Reciprocal cutting tool 10 comprises handle 11, be arranged on the power brick 12 on handle 11, with the housing 13 that handle 11 phase pivotables are connected, be arranged on the retaining mechanism 14 for lock handle 11 and housing 13 relative positions on housing 13, and saw blade 17 from stretching out in housing 13.
See also Fig. 1 and Fig. 3, housing 13 has the first gripper shoe 21 that the first bracing frame 15, the first bracing frames 15 comprise main body 19 and are connected to main body 19 one end.Main body 19 is hollow square tube shape, and described the first gripper shoe 21 has the first abutment face 23, centre bore is set in the first gripper shoe 21 and stretches out the first abutment face 23 for saw blade 17.In the time of reciprocal cutting tool 10 cut workpiece, the first abutment face 23 can be resisted against on the surface of workpiece, thereby for user provides support, makes cutting process more stable.Main body 19 is provided with installation portion 20 back to one end of the first gripper shoe 21, and installation portion 20 is buckle structure, and the first bracing frame 15 can be mounted on housing 13 by installation portion 20.
In housing 13, contain motor 25, the transmission component 27 being connected with motor 25, and driven the reciprocating lever 29 that also can partly stretch out housing 13 by transmission component 27.Away from the end of transmission component 27, saw blade 17 is installed at reciprocating lever 29.
See also Fig. 3 and Fig. 4, motor 25 has motor output shaft and is socketed in the driven wheel 33 on motor output shaft, in the time that motor 25 is switched on work, drives driven wheel 33 to rotate around electrical axis X by motor output shaft.
Certainly; those skilled in the art can also adopt other technologies scheme to realize the function of transmission component 27; such as setting-up eccentricity axle on driven wheel 33 coordinates with reciprocating lever 29 etc.; no longer describe in detail at this, but as long as its function and effect and the present invention is same or similar all should be covered by protection domain of the present invention.
Reciprocating lever 29 extends along longitudinally.The bearing of trend of reciprocating lever 29 is vertical with electrical axis X, in the time that reciprocating lever 29 drives saw blade 17 to cut work under the driving of transmission component 27, can drive saw blade 17 to move back and forth along described bearing of trend.So, motor 25 is arranged to a side of reciprocating lever 29, far away apart from handle 11, thus effectively reducing in the course of work, the impact of the vibrations of motor 25 on user's hand, has improved operational comfort.In the present embodiment, reciprocating lever 29 one end connect by frid (not shown) and the eccentric shaft 39 with bar hole, thereby realize the reciprocating motion that the rotation of reduction gearing 35 is changed into reciprocating lever 29.The other end of the relatively described frid of reciprocating lever 29 is saw blade chuck 31, and user can be clamped or be discharged saw blade 17 by operation saw blade chuck 31.After reciprocating lever 29 is mounted in housing 13, saw blade chuck 31 can stretch out outside housing 13, and is contained in the first bracing frame 15.
See also Fig. 1 and Fig. 3.Housing 13 can rotate with respect to handle 11 around electrical axis X, and user can limit the two position relationship by operation retaining mechanism 14.
It is cylindric and along the extension of longitudinally that grip part 45 is, and its one end is for installing power brick 12 by buckle mode, and its other end is connected with housing 13.
Certainly; temperature, voltage or electric current in control circuit board detection power brick is not limited to the numerical value of foregoing description; those skilled in the art's those numerical value that are subject to variation according to actual needs, but as long as the function of its realization is identical with the present invention or close, all should be covered by protection domain of the present invention.
The second bracing frame 49 comprises the first support arm 51, the second support arm 53 and against plate 55.One end that a free end of the first support arm 51 is installed power brick 12 with grip part 45 is connected, and a free end of the second support arm 53 is connected with the other end of grip part 45.Two free ends against plate 55 are connected away from the free end of grip part 45 with the first support arm 51 and the second support arm 53 respectively, and there is second abutment face 56 back to grip part 45 against plate 55, the area that is resisted against surface of the work for expanding reciprocal cutting tool 10, makes cutting process more reliable and more stable.
Be appreciated that, in present embodiment, grip part 45, the first support arm 51, the second support arm 53 and formed a quadrangle against plate 55, wherein grip part 45 be oppositely arranged against plate 55, now just can, by the second abutment face 56 being set on plate 55 for increasing rest surface, can not affect again size and the structure of grip part 45.Grip part 45 with can also form " D " shape against plate 55 and described support arm.Certainly, those skilled in the art also may further improve for the technical scheme in the present invention, but as long as the function of its realization and effect and the present invention are same or similar, all should be covered by protection domain of the present invention.
See also Fig. 1 and Fig. 2, reciprocal cutting tool 10 has the first duty and the second duty, wherein when reciprocal cutting tool 10 is during in the second duty, the area that reciprocal cutting tool 10 is resisted against surface of the work is greater than reciprocal cutting tool 10 in the time of the first duty, reciprocal cutting tool 10 is resisted against the area of surface of the work, so arrange and can make user tackle more flexibly use needs, in the time of needs fast shut-off workpiece, just reciprocal cutting tool 10 is adjusted to the first duty, in the time that needs cut comparatively accurately, reciprocal cutting tool 10 can be adjusted to the second duty, make the process of cut workpiece more reliable and more stable.And, in the time that reciprocal cutting tool 10 is converted to the second duty from the first duty, its center of gravity can be along the radially close handle 11 of electrical axis X, so when in the first duty, when user operates reciprocal cutting tool 10 cut workpiece, can provide cutting required pressure to saw blade 17 by the gravity of the center of gravity of reciprocal and instrument 10, thereby save user from body forces, reduce and used fatigue; When reciprocal cutting tool 10 is during in the second duty, its center of gravity is to the side shifting near handle 11, thereby makes user more stable to the control of reciprocal cutting tool 10, contributes to improve cutting accuracy.
When reciprocal cutting tool 10 is during in the first duty, only by the first abutment face 23 against workpiece, the first abutment face 23 is crossing not coplanar with the second abutment face 56, now reciprocal cutting tool 10 is used for fast by cutting workpiece, preferably, the workpiece of cutting is as wooden stick, tubing or the sheet material that need to cut off along perpendicular etc.In the time that user operates housing 13 and rotates with respect to handle 11, reciprocal cutting tool 10 is in the second duty, even if the first abutment face 23 turns to the first abutment face 23 and the second abutment face 56 and is jointly resisted against the position of surface of the work with respect to electrical axis X, now reciprocal cutting tool 10 is in the second duty, preferably, be now resisted against on the surface of a level of workpiece by the first abutment face 23 and the second abutment face 56 simultaneously.Owing to having increased rest surface, make cutting work more be stablized the support that can arrive, now reciprocal cutting tool 10 goes for, along horizontal plane machining sheet, having very high cutting accuracy.
The first abutment face 23 is all parallel with electrical axis X with the second abutment face 56, and the first abutment face 23 can rotate around electrical axis X with respect to the second abutment face 56, so realize reciprocal cutting tool 10 and there are described two duties, moreover, equate by the distance of electrical axis X to the first abutment face 23 and the second abutment face 56, realize the first abutment face 23 and the second abutment face 56 can coplanarly be resisted against surface of the work.
The housing 13 of reciprocal cutting tool 10 can be limited in certain angular range with respect to handle 11 rotations, so, can prevent the rotation of housing 13 with respect to handle 11 unrestricted angles, cause turning cylinder and retaining mechanism 14 easily to damage, and can know the angle setting between housing 13 and handle 11 while defining described two duties, make user's between switching fast, brought facility to user.In the present embodiment, reciprocal cutting tool 10 is changed while adjusting between described the first duty and described the second duty, variable angle scope between the first abutment face 23 and the second abutment face 56 is 90 degree to 0 degree, when the angle between the first abutment face 23 and the second abutment face 56 is 90 while spending, reciprocal cutting tool 10 is in described the first duty, when the angle between the first abutment face 23 and the second abutment face 56 is 0 while spending, reciprocal cutting tool 10 is in described the second duty.Certainly, reciprocal cutting tool 10 angle between the first abutment face 23 and the second abutment face 56 in the time of the first duty is not limited to 90 degree, it is only comparatively preferred angle value, the angle value of this angle can also be that other angle is as 85 degree, 80 degree, 75 degree or 70 degree etc., or user can be in the time making housing 13 rotate with respect to handle 11, by retaining mechanism 14, the two is limited in to the position of described angle in non-zero degree, now reciprocal cutting tool 10 also can carry out cutting tool.
Certainly, be installed on grip part 45 also with by other technical scheme against plate 55, as the first support arm 51 being only set or the second support arm 53 etc. being only set, between plate 55 and grip part 45, be connected with at least one support arm.The shape of the second abutment face 56 also can need to be arranged to difformity according to different uses, as square, triangle, circle or other polygons etc.Because of as space is limited at this not for being installed on the technical scheme of grip part 45 against plate 55; and the shape of the second abutment face 56 enumerates; but as long as the function of its realization is same or similar with effect and the present invention of reaching, all should be covered by protection domain of the present invention.
When reciprocal cutting tool 10 is after described the first duty is converted to described the second duty, now the sawtooth of saw blade 17 can be towards the second bracing frame 49, now need to pull reciprocal cutting tool 10 to carry out cutting work after user's gripping handle 11, in order to make the reciprocal cutting tool 10 can be more comfortable in described second duty when work, user reinstalls after can unloading saw blade 17, make sawtooth back to the second bracing frame 49, now user just can gripping handle 11 promotes forward reciprocal cutting tool 10 and carries out cutting work, improve the comfort level of work.
In order to make the operation of reciprocal cutting tool 10 more comfortable, the angular range of angle α between the bearing of trend of the grip part 45 of handle 11 and the second abutment face 56 is 10 degree to 30 degree, preferably, the angle value of this angle α is 15 degree, the most comfortable when now user's gripping handle 11 is worked.
Certainly, those skilled in the art can also realize reciprocal cutting tool 10 by alternate manner and possess two kinds of duties, and the area that makes reciprocal cutting tool 10 be resisted against surface of the work in the time of the second duty is greater than it and is resisted against in the time of the first duty the area of surface of the work, such as on the first bracing frame 15 by the mode of pivot install one with the first gripper shoe 21 same shapes against plate, described against plate have back to first surface and second surface, wherein second surface is as the second abutment face of reciprocal cutting tool 10.When reciprocal cutting tool 10 is during in the first duty, should can be contained in main body 19 inside against plate, and be only resisted against surface of the work by the first abutment face 23 of the first gripper shoe 21, described the second abutment face and the first abutment face 23 are parallel to each other not coplanar, when reciprocal cutting tool 10 is during in the second duty, described in operation, rotate with respect to the first gripper shoe 21 against plate, make described first surface or second surface against plate, jointly be resisted against surface of the work with the first abutment face 23, thereby realize the area that has expanded reciprocal cutting tool 101 and be resisted against surface of the work.Certainly; cause as space is limited; described in only having described, can be installed in the first gripper shoe 21 in the mode of pivotable against plate herein; realize reciprocal cutting tool 10 and there is the first duty and the second duty; those skilled in the art also may make other and change design; can move with respect to the first gripper shoe 21 in the mode of translation against plate etc. such as described; no longer enumerate as space is limited at this; but as long as the function of its realization is same or similar with effect and the present invention of reaching, all should be covered by protection domain of the present invention.
Refer to Fig. 3, retaining mechanism 14 has locking housing 13 and the lock-out state of handle 11 mutual alignment relations and the release conditions that allow housing 13 to rotate with respect to handle 11.
Retaining mechanism 14 comprises the locating part 57 that is arranged on the second transmission housing 43b, be arranged at the counterpart 59 that can accommodate locating part 57 on handle 11, can coordinate with locating part 57 and realize the operating parts 63 that the locking member 61 of locking function, exercisable drive locking member 61 are realized locking and discharged, and be installed on the lid 65 on counterpart 59, realize locking member 61 and locating part 57 are contained in the receiving space that lid 65 and counterpart 59 form.
See also Fig. 3 and Fig. 5, locating part 57 is arranged at the second transmission housing 43b on the surface of the first transmission housing 43a, it has at least two limiting sections, each described limiting section all can coordinate with locking member 61 position relationship limiting between housing 13 and handle 11, in wherein said at least two limiting sections, there is a vertical position limiting section, locking member 61 can coordinate with vertical position limiting section, make the bearing of trend of reciprocating lever 29 vertical with the second abutment face 56, the first abutment face 23 and the second abutment face 56 are coplanar.In the present embodiment, locating part 57 is the axially extending cylindrical shape along electrical axis X, described limiting section is the limited impression extending along electrical axis X being arranged in locating part 57 exterior lateral sides, and described limited impression is for coordinating the position that limits handle 11 and housing 13 with locking member 61.Preferably, the quantity of described limited impression is multiple and adjacent setting, so make the circumferential exterior surface of locating part 57 be covered with limited impression, so can realize coordinating with limited impression by locking member 61 to realize housing 13 is limited in to multiple positions, user just can be according to actual needs like this, adjustment housings 13, with respect to the angle of handle 11, has met user demand greatly arbitrarily.
Counterpart 59 is arranged on the end of handle 11 away from power brick 12, and in the time being assembled into reciprocal cutting tool 10, counterpart 59 is accommodated locating part 57 and locking member 61, and housing 13 can be rotated with respect to counterpart 59 around electrical axis X.In the present embodiment, counterpart 59 is made with handle 11 is one-body molded, it is the cylindrical shape of hollow, and be set in locating part 57 outsides, and counterpart 59 coaxially extends with locating part 57 and electrical axis X, make housing 13 with respect to handle 11 around electrical axis X rotation, the use function that has increased reciprocal cutting tool 10 is so set.On counterpart 59, be provided with operating parts resettlement section 60, accommodate operating parts 63 and allow operating parts 63 to rotate within the scope of certain angle for part, drive locking member 61 to realize, so just, all or part of being contained in counterpart 59 of locating part 57, locking member 61 and operating parts 63 have been realized, make structure very compact, reduced the volume of complete machine.
See also Fig. 3, Fig. 5 and Fig. 6, locking member 61 is for coordinating with locating part 57, can realize and limit the position of housing 13 with respect to handle 11, it is exercisable in limiting the in relative rotation locked position of housing 13 with respect to handle 11, and allow housing 13 with respect to handle off-position in relative rotation, make accordingly retaining mechanism 14 be in the lock state and release conditions.In the time that user need to regulate the duty of reciprocal cutting tool 10, just operating locking member 61 makes it in off-position, after duty has regulated, just operating locking member 61 makes it in locked position, so arrange and make user regulate very easily the duty of reciprocal cutting tool 10, and can be stable after having regulated be locked in target duty, the course of work is stablized more comfortable.
In the present embodiment, locking member 61 lengthwises extend and mid portion possesses certain radian, make its part surround locating part 57, and locating part 57 is positioned at the side near locking member 61 centers of circle.Locking member 61 one end are installed on counterpart 59 by connecting axle 67, and the other end is connected with operating parts 63.Locking member 61 is locking face towards the surface of described locating part 57, be the arc inner surface of locking member 61, when locking member 61 is during in locked position, described locking face can with locating part 57 phase close contacts, corresponding retaining mechanism 14 is in described lock-out state, because locating part 57 surfaces are provided with described limited impression, make described locking face and locating part 57 phase close contacts discontinuity afterwards, thereby further increase the frictional force between the two, increased the rotary resistance between housing 13 and handle 11, thereby make spacing more firm between housing 13 and handle 11, in the time of described locking face and the disengaging of described locating part, locking member 61 is in off-position, and now retaining mechanism 14 is in described release conditions.
In order to make locking member 61 there is good ductility, it adopts steel band to make, preferred its carbon steel that is 0.60% to 0.95% for phosphorus content is made, so arrange can make its make spacing firm be not prone to loosening, and the ductility of locking member 61 and life-span reach the best.
In order to make locking member 61 when the locked position, it is more firm with coordinating of locating part 57, on the described locking face of locking member 61, at least one projection is set, described projection is for engaging with described limited impression, preferred this protruding quantity is two, spacing comparatively firm stable, and technique is simple.After described projection is meshed with described limited impression, described locking face near the region of described projection also and described locating part close contact make that position relationship between locking member 61 and locating part 57 limits more firm.
The limiting section that is appreciated that locating part 57 does not limit to the mode that adopts limited impression, and it can be also projection, and corresponding locking member 61 can arrange limited impression and coordinate and realize retaining mechanism 14 in described lock-out state with described projection.Those skilled in the art also may make other and change design under technology enlightenment of the present invention, but as long as the function of its realization and effect and the present invention are same or similar, all should be covered by protection domain of the present invention.
More stable for connecting axle 67 is installed, one end of connecting axle 67 is installed on counterpart 59, and the other end is installed on lid 65.
See also Fig. 3, Fig. 5 and Fig. 7, in order to prevent that locking member 61 is through occurring after long-time use when lax, cause spacing loosening problem, the connecting axle 67 that locking member 61 is connected to counterpart 59 can be an eccentric shaft, and rotate by the described eccentric shaft of operation, the eccentric axis of described eccentric shaft is changed with respect to the distance of locating part 57, realize the rate of tension that regulates locking member 61.Be that described connecting axle 67 comprises the connecting axle limiting section 69 that extends and have the circumferential flank of tooth along central axis, and extend and connect the eccentric part 71 of locking member 61 from connecting axle limiting section 69 bias, away from the end of connecting axle limiting section 69, connecting portion 73 is set at eccentric part 71, and connecting portion 73 extends with connecting axle limiting section 69 coaxial lines.Connecting portion 73 is for connecting with lid 65.The position that counterpart 59 is installed connecting axle limiting section 69 arranges the hole 75 that can join with connecting axle limiting section 69 shapes.In the time there is spacing loosening problem, user can take out connecting axle 67 from hole 75, and turn an angle around the central axis of connecting axle limiting section 69, due to eccentric part 71 and the setting of connecting axle limiting section 69 bias, thereby the eccentric axis of eccentric part 71 is rotated with respect to described central axis, realize described eccentric axis to the distance of locating part 57 and changed, impelled the locking member 61 can be by further tensioning, made locking member 61 tightr with coordinating of locating part 57.
Above-mentioned handle 11 is connected with locating part 57 pivotables of housing 13 by counterpart 59, and by locking member 61 the two position relationship of locking, for make between handle 11 and housing 13 be connected more stable, be provided with the smooth surface 58 contacting with the outer surface of locating part 57 all the time in the inner side of counterpart 57, no matter retaining mechanism 14 is in described lock-out state or release conditions, smooth surface 58 contacts with the outer surface of locating part 57 all the time.Outer surface corresponding to locating part 57 arranges limited impression, and smooth surface 58 contacts with the top of the sidewall of each limited impression.So make between handle 11 and housing 13 be connected highly stable, when locking member 61 is during in locked position, locating part 57 back to a side of locking member 61 can with smooth surface 58 tight butt mutually, for the spacing reaction force that provides between locking member 61 and locating part 57, when locking member 61 is during in off-position, smooth surface 58 contacts with locating part 57, thereby makes stable the rotating with respect to handle 11 of housing 13, realize between the two and can not shake, thereby improved operational comfort.
Refer to Fig. 3, Fig. 5 and Fig. 6, operating parts 63 can operated tension or is loosened locking member 61, thereby makes locking member 61 in locked position or off-position.In the present embodiment, operating parts 63 is a spanner, and its one end is operating portion, and the other end is hub switch side cylindraceous, and has operating parts pivot center V, has rotating shaft 64 at hub switch side eccentric setting, and is connected with locking member 61 by rotating shaft 64.Operating parts 63 has operating parts locked position and the operating parts off-position corresponding with the locked position of locking member 61 and off-position.When the operating portion of user's operating operation part 63, operating parts 63 is clockwise rotated along direction E with respect to the operating parts pivot center V of hub switch side, now rotating shaft 64 can be rotated with respect to described operating parts pivot center V, and then drive the projection of locking member 61 to engage with the limited impression of locating part 57, even if locking member 61 is in locked position, now operating parts 63 is in described operating parts locked position; When the operating portion of user's operating operation part 63, operating parts 63 is rotated counterclockwise along direction F with respect to operating parts pivot center V, now rotating shaft 64 can be cancelled the pulling force to locking member 61, make the projection of locking member 61 depart from the limited impression of locating part 57, be locking member 61 in off-position, now operating parts 63 is in described operating parts off-position.
Operating parts pivot center V is parallel with electrical axis X, thereby make operating parts 63 drive the link of locking member 61 to produce the radial displacement of relative electrical axis X by rotating shaft 64, even if one end that locking member 61 is connected with operating parts 63 is the radially generation displacement along electrical axis X with respect to handle 11, realize retaining mechanism 14 and be in the lock state.Because electrical axis X is vertical with the bearing of trend of reciprocating lever 29, so operating parts pivot center V is also vertical with the bearing of trend of reciprocating lever 29, now motor 25 lays respectively at the relative both sides of reciprocating lever 29 with retaining mechanism 14, thereby makes complete machine structure compact and reasonable more.
Certainly, operating parts 63 is not limited to the technical scheme of foregoing description, those skilled in the art also may make other and change design under technology enlightenment of the present invention, as there is the slippage button of position attributive function, at counterpart 59 groove is circumferentially set, described slippage button can slide in described groove, and by some breach are set in recess sidewall, and some projections are set on button coordinate with described breach, realize the position that limits described slippage button, one end of locking member 61 is connected with described slippage button, when the described slippage button of operation is during in different position, just can realize and drive locking member 61 in described locked position or described off-position.Certainly, reciprocal cutting tool 10 also can not have operating parts 63 and one end part of locking member 61 parts of attended operation originally 63 is stretched out to counterpart 59, and on counterpart 29, projection is set, the part of stretching out counterpart 59 at locking member 61 arranges through hole, user can make described through hole match with described projection by manual operation locking member 61, realize locking member 61 in described locked position, and can operate locking member 61 and make described through hole and described protruding separation, realize locking member 61 in described off-position.Certainly, those skilled in the art can also make other and change design, but as long as the function of its realization and the effect that reaches are identical with the present invention or close, all should be covered by protection domain of the present invention.
Refer to Fig. 3, lid 65 forms receiving space for coordinating with counterpart 59, it is also for being fixed the connecting portion 73 of connecting axle 67 simultaneously, and there is the resettlement section (not shown) corresponding with the operating parts resettlement section 60 of counterpart 59, accommodate the hub switch side of operating parts 63 for part, so realize spacing to operating parts 63 hub switch sides by operating parts resettlement section 60 and described resettlement section, and make that more overall structure is more reliable and more stable.Can make the installation of retaining mechanism 14 more firm by lid 65 is set, and can prevent contamination by dust retaining mechanism, thereby make outward appearance more attractive in appearance the service life of prolongation retaining mechanism 14 simultaneously.
Refer to Fig. 1 and Fig. 3, power brick 12 parts are contained in grip part 45, and in the relative both sides of power brick 12, a button 18 with limited bolt 16 is set respectively, and in the inside of button 18, resetting-mechanism (not shown) is installed, in the time that power brick 12 is mounted to grip part 45, can be by the protruding (not shown) clamping of limited bolt 16 and grip part 45 madial walls, realize the position that limits power brick 12, in the time that user need to take off power brick 12, thereby can press the button 18 throws off limited bolt 16 and described projection, now just can take advantage of a situation and pull out power brick 12.So arrange and make the dismounting of power brick 12 very convenient fast, offer convenience to user.In the present embodiment, the battery in power brick 12 is lithium battery, and the voltage of power brick 12 is 12V, the now small volume of power brick 12, meet the miniaturization demand of instrument, and can provide sufficient power for cutting work, thereby make the performance of reciprocal cutting tool 10 reach best.
Certainly; the mode that power brick 12 is installed on grip part 45 is not limited to technique scheme; those skilled in the art can also adopt other modes that power brick is installed under technology enlightenment of the present invention; but as long as its technical spirit and the present invention are same or similar, all should be covered by protection domain of the present invention.Equally; the voltage of the power brick 12 in the present invention is not limited to 12V; its inner battery of installing is also not limited to lithium battery; those skilled in the art can change design according to actual needs, but as long as the function of its realization with the effect reaching and the present invention is same or similar all should be covered by protection domain of the present invention.
Refer to Fig. 8, the reciprocal cutting tool 100 providing for second embodiment of the invention, it comprises handle 111, be installed on the power brick 112 of handle 111, pivotable is installed on the housing 113 on handle 111, be housed in the motor (not shown) in housing 113, by motor-driven reciprocating lever 129, be installed on the saw blade 117 on reciprocating lever 129.
The reciprocal cutting tool 10 that the structure of reciprocal cutting tool 110 and first embodiment of the invention provide is basic identical, its difference is: handle 111 there is the resettlement section 176 of accommodating electric elements against plate 155, be that hollow structure forms resettlement section 176 against the inside of plate 155, and between resettlement section 176 and grip part 145, be formed with and grip space 146, thereby grip part 145 and resettlement section 176 are set up in parallel mutually, and switch 147 is between grip part 145 and resettlement section 176.
Described resettlement section 176 comprises power brick resettlement section 177 and fan resettlement section 179.Extend along the longitudinally against plate 155 power brick resettlement section 177, and the bearing of trend of power brick resettlement section 177 is vertical and parallel with described the second abutment face 156 with the electrical axis of described motor all the time, its one end back to saw blade 117 has opening, for inserting for power brick 112, and limit the position of power brick 112 by buckle mode.So make very easily dismounting of power brick 112, and when reciprocal cutting tool 100 is after conversion between described the first duty and the second duty, can not cause the inconvenient dismounting of power brick 112 because of the variation of duty.
So power brick 112 is arranged on plate 155, and will only control circuit board (not shown) be arranged in grip part 145, because the size of control circuit board is relatively little, make the internal diameter size of grip part 145 can be more flexible, in the present embodiment, the internal diameter size of grip part 145 is less than the internal diameter size of grip part 45 in the first embodiment, so just can improve the gripping comfort level of handle 111, and improve against the space availability ratio of plate 155, made overall structure more reasonable.
Be appreciated that, because the inside against plate 155 is that hollow structure forms resettlement section 176, therefore also can think that the second abutment face 156 is positioned on resettlement section 176, resettlement section 176 is back to the surface of grip part 145.
Certainly, the position of resettlement section 176 is not limited to be arranged on plate 155, it also can be located at grip part 145 away from the side against plate 155, and also connect by the structure of support arm described in similar the present invention, again or resettlement section 176 be arranged on one end away from housing 113, grip part 145, and by the setting substantially vertical with the bearing of trend of grip part 145 of the bearing of trend of resettlement section 176, the bearing of trend of power brick 112 is approximately perpendicular to the bearing of trend of grip part 145.By the way, all can realize the electric elements that are contained in grip part 145, as power brick etc., be arranged in the resettlement section 176 of 145 outsides, grip part, realize the size of grip part 145 can do littlely, make to grip more comfortable.Certainly those skilled in the art also may make other technical scheme, but as long as the function of its realization and effect and the present invention are same or similar, all should be covered by protection domain of the present invention.
See also Fig. 9 and Figure 10, fan resettlement section 179 is positioned at a side of closing on the first bracing frame 115 against plate 155, be positioned at resettlement section 176 and power brick 112 back to one end.Fan component 181 is for carrying out drifting dust during in the second duty when reciprocal cutting tool 100.A side of facing grip part 145 in fan resettlement section 179 is accordingly provided with fresh air inlet 183, sets out air port 184 in resettlement section 176 on the end face of power brick 112.When reciprocal cutting tool 100 is in the time that the second duty is cut work, it just can carry out drifting dust by fan component 181 independently.Due to the close together between air outlet 184 and saw blade 117, and in the time that air-flow blows to from air outlet 184 position that saw blade 117 cuts, the flow direction of air-flow and the angle of surface of the work are less, so arrange the chip that air-flow produces with cutting is moved along the direction that is roughly parallel to surface of the work, it can not hinder user's sight line, also avoided traditional drifting dust structure simultaneously, air-flow causes dust direction motion to vertical surface of the work under the ordering about of reaction force perpendicular to surface of the work, easily damage the phenomenon of user's eyes.
In the present embodiment, referring to Figure 12, there is an angular range in the flow direction and the surface of the work that blow to effective air-flow of surface of the work drifting dust from air outlet 184.In described angular range, maximum angle is β, and minimum angle is γ, thereby forms effective drifting dust region between angle β and angle γ, and the position of saw blade 117 cut workpiece is positioned at described angular range, makes drifting dust effect reach best.The angle value of angle β is selected from 20 degree to 45 degree, and the angle value of angle γ is selected from 0 degree to 20 degree, and preferred, the angle value of angle β is 25 degree, and the angle value of angle γ is 10 degree.
Certainly, exhaust vent 184 can be more near the second abutment face 156, thereby make the air-flow blowing out from exhaust vent 184 be parallel to surface of the work, now also there is preferably drifting dust effect.
Be appreciated that; the mode of above-mentioned announcement provided with fan assembly 181 is not limited on the reciprocal cutting tool 100 that is arranged on present embodiment announcement; those skilled in the art can be under technology enlightenment of the present invention; can select other cutting tool to adopt the mode of provided with fan assembly 181 in present embodiment; but as long as its mounting means adopting is identical with the present invention or close; and in order to realize and the same or analogous function of the present invention and effect, all should be covered by protection domain of the present invention.
See also Fig. 9 and Figure 10 in the present embodiment, fan component 181 comprises fan hub 185, fan electromotor (not shown), turbine 187.Wherein, fan electromotor and turbine 187 are contained in inside by fan hub 185, can protect internal structure.Fan electromotor is arranged at the center of turbine 187, thereby drives turbine 187 to rotate in the time of energising work.Fan electromotor is DC brushless motor, and so setting can effectively extend the life-span of fan component 181, and independent fan electromotor driving turbine 187 realization raising drifting dust efficiency are set.Fan electromotor is connected with power brick 112 by switch 147, and is controlled by switch 147, and in the time that switch 147 triggers, fan electromotor is just worked simultaneously and driven turbine 187 to carry out drifting dust work.
Refer to Fig. 8, grip between 146 grip part 145, space and resettlement section 176, it grips grip part 145 from gripping space 146 through realizing for the finger for user, or accommodates for achieving the above object user's finger.
Be appreciated that; that in present embodiment, discloses is not limited to for accommodating the resettlement section 176 of electric elements the reciprocal cutting tool 100 that installation is described in the present embodiment; it can also be installed on other portable power tools as portable electric annular saw, electric drill, electric hammer or screwdriver etc.; do not enumerate as space is limited at this; but as long as its technical scheme adopting and the present invention are same or similar; and realized same or analogous function and effect, all should be covered by protection domain of the present invention.
Refer to Figure 11, in order to improve the wearability of the plane contacting with workpiece against plate 155 of handle 111, can wear-resisting coating be set on the surface contacting with workpiece against plate 155, maybe adopt high-abrasive material to make on this surface.In the present embodiment, be provided with a backing plate 189 on the surface against plate 155 towards workpiece, be resisted against on the surface of workpiece against plate 155 by backing plate 189, the second abutment face 156 is the surface of backing plate 189 towards workpiece.Backing plate 189 adopts high-abrasive material to make as the material such as plastics, metal, and preferably it is made for metal material, as iron, stainless steel, aluminium alloy or copper etc.
In order to extend the service life of reciprocal cutting tool 100, backing plate 189 can adopt dismountable mode to be installed on plate 155, so, makes after heavy wear appears in backing plate 189, just can change in time, thereby realize the service life that extends reciprocal cutting tool 100.
See also Fig. 8 and Figure 12, on lid 165, be provided with the accepting groove 168 of accommodating operating parts 163 for part, and accepting groove 168 is along the circumferential extension of electrical axis X.Operating parts 163 is joined with accepting groove 168 phase shapes, when operating parts 163 is during in operating parts locked position, operating parts 163 can partly be contained in accepting groove 168, make the entirety of operating parts 163 be positioned at the circumferential profile of counterpart 159 with respect to electrical axis, thereby realize and rationally utilize space, reduced the volume of reciprocal cutting tool 100.Preferably, operating parts 163 has an operating side 170, when operating parts 163 is during in described operating parts locked position, the circumferential profile of counterpart 159 with respect to electrical axis X can be stretched out along the radial component of electrical axis X in described operating side 170, so that user's operation.
Reciprocal cutting tool in the present invention has the first duty and the second duty, and be greater than it and be resisted against in the first duty the area of surface of the work by the area that the second duty is resisted against surface of the work, cut workpiece can be highly stable reliable in the time of the second duty to make it, be applicable to carry out meticulous cutting work, and described reciprocal cutting tool is relatively little owing to being resisted against the area of surface of the work in the time of the first duty, is applicable to the roughing such as fast shut-off object.The overall performance that has improved reciprocal cutting tool is so set, and has promoted operational comfort, bring great convenience to user.
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 (16)
1. a reciprocal cutting tool, for cut workpiece, comprising:
Handle;
With the housing that described handle pivotable is connected, it is exercisable with respect to described handle rotation, makes described reciprocal cutting tool have the first duty and the second duty;
Be contained in the motor in described housing;
The saw blade being moved reciprocatingly by the driving of described motor;
It is characterized in that:
The area that described reciprocal cutting tool is resisted against surface of the work in the second duty is greater than it and is resisted against in the first duty the area of surface of the work.
2. reciprocal cutting tool as claimed in claim 1, it is characterized in that: described housing has the first abutment face, described handle has the second abutment face, when described reciprocal cutting tool is during in described the first duty, only by described the first abutment face against described workpiece, when described reciprocal cutting tool is during in described the second duty, described the first abutment face and described the second abutment face are jointly against described workpiece.
3. reciprocal cutting tool as claimed in claim 2, is characterized in that: when described reciprocal cutting tool is during in described the second duty, described the first abutment face and described the second abutment face are coplanar against described workpiece.
4. reciprocal cutting tool as claimed in claim 2, is characterized in that: when described reciprocal cutting tool is during in described the first duty, described the first abutment face and described the second abutment face intersect not coplanar.
5. reciprocal cutting tool as claimed in claim 4, is characterized in that: when described reciprocal cutting tool is during in described the first duty, described the first abutment face is vertical with described the second abutment face.
6. reciprocal cutting tool as claimed in claim 2, is characterized in that: described housing has the first bracing frame, and described the first abutment face is positioned on described the first bracing frame, and described handle comprises grip part and has the second bracing frame of described the second abutment face.
7. reciprocal cutting tool as claimed in claim 6, it is characterized in that: described the second bracing frame have can against workpiece against plate, and describedly on plate, be provided with fan component, described fan component is for carrying out drifting dust during in the second duty when described reciprocal cutting tool.
8. reciprocal cutting tool as claimed in claim 7, is characterized in that: described fan component is driven by independent fan electromotor.
9. reciprocal cutting tool as claimed in claim 7, is characterized in that: described the second bracing frame have can against workpiece against plate, and the described power brick against accommodating promising described fan component and the power supply of described motor on plate.
10. reciprocal cutting tool as claimed in claim 9, is characterized in that: described power brick is between described the second abutment face and described grip part.
11. reciprocal cutting tools as claimed in claim 10, is characterized in that: described have the resettlement section of extending along longitudinally and partly accommodate described power brick against plate, and the bearing of trend of described resettlement section is vertical with described electrical axis.
12. reciprocal cutting tools as claimed in claim 11, is characterized in that: described resettlement section is inserted in described power brick one end from described resettlement section back to described saw blade.
13. reciprocal cutting tools as claimed in claim 6, is characterized in that: described the second bracing frame is provided with backing plate towards the surface of workpiece, and described the second abutment face is the surface of described backing plate towards workpiece.
14. reciprocal cutting tools as claimed in claim 13, is characterized in that: the material of described backing plate is plastics or metal.
15. reciprocal cutting tools as claimed in claim 1, is characterized in that: in the time that described reciprocal cutting tool is converted to described the second duty from described the first duty, its center of gravity can be along the radially close described handle of described electrical axis.
16. reciprocal cutting tools as claimed in claim 2, is characterized in that: when described reciprocal cutting tool is during in described the first duty, described the first abutment face is parallel with described the second abutment face not coplanar.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110008496.3A CN102581376B (en) | 2011-01-14 | 2011-01-14 | Reciprocating cutting tool |
| PCT/CN2012/070212 WO2012094997A1 (en) | 2011-01-14 | 2012-01-11 | Reciprocating cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110008496.3A CN102581376B (en) | 2011-01-14 | 2011-01-14 | Reciprocating cutting tool |
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| Publication Number | Publication Date |
|---|---|
| CN102581376A CN102581376A (en) | 2012-07-18 |
| CN102581376B true CN102581376B (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110008496.3A Active CN102581376B (en) | 2011-01-14 | 2011-01-14 | Reciprocating cutting tool |
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| CN (1) | CN102581376B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785898B (en) * | 2014-01-27 | 2017-02-01 | 天佑电器（苏州）有限公司 | Reciprocating saw |
| CA3088061A1 (en) * | 2018-01-05 | 2019-07-11 | Techtronic Cordless Gp | Reciprocating saw |
| WO2022198422A1 (en) * | 2021-03-22 | 2022-09-29 | 浙江嘉宏工具制造有限公司 | Electric hand saw |
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| EP0768138A2 (en) * | 1995-10-10 | 1997-04-16 | Black & Decker Inc. | A reciprocating saw with an angular blade drive and rotatable blade holder |
| US5832611A (en) * | 1996-08-07 | 1998-11-10 | Schmitz; Jeffrey F. | Variable angle reciprocating tool |
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| CN1683104A (en) * | 2004-04-14 | 2005-10-19 | 创科实业有限公司 | Toolless adjustable base for a portable saw |
| CN1820882A (en) * | 2005-02-16 | 2006-08-23 | 创科实业有限公司 | Alignment guide for a saw |
| CN1953834A (en) * | 2004-05-15 | 2007-04-25 | 罗伯特·博世有限公司 | Universal saw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6671969B2 (en) * | 2001-12-18 | 2004-01-06 | Porter-Cable/Delta | Adjustable shoe for a reciprocating saw |
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| US3547166A (en) * | 1968-07-03 | 1970-12-15 | Singer Co | Chuck attachment for sabre saws |
| EP0768138A2 (en) * | 1995-10-10 | 1997-04-16 | Black & Decker Inc. | A reciprocating saw with an angular blade drive and rotatable blade holder |
| US5832611A (en) * | 1996-08-07 | 1998-11-10 | Schmitz; Jeffrey F. | Variable angle reciprocating tool |
| CN1487865A (en) * | 2001-01-19 | 2004-04-07 | ���ŷ� | Assembly of foot and reciprocating saw |
| CN1683104A (en) * | 2004-04-14 | 2005-10-19 | 创科实业有限公司 | Toolless adjustable base for a portable saw |
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| CN102581376A (en) | 2012-07-18 |
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