CN104802139B

CN104802139B - Power tool

Info

Publication number: CN104802139B
Application number: CN201410038267.XA
Authority: CN
Inventors: 顾育明; 闫明星; 龙军; 王家达; 吴建; 孟祥花
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2017-01-04
Anticipated expiration: 2034-01-27
Also published as: CN104802139A

Abstract

The present invention provides a kind of power tool, including housing, it is contained in the motor in described housing, the take-off lever driven by drive mechanism by described motor, described drive mechanism includes motion changing mechanism, the described take-off lever of the exercisable driving of described motion changing mechanism is in the first motor pattern and second motor pattern of output rotary motion of output reciprocating motion, described take-off lever lengthwise extends and has centrage, described power tool also includes the support member with supporting surface, the movable connection of described support member on the housing thus described supporting surface is selectable be positioned at described working region within or outside.Operator can adjust the position of support member as required, thus meet power tool under different operating modes to workpiece against different demands, greatly facilitate the use of power tool.

Description

Power tool

Technical Field

The present invention relates to power tools, and more particularly to a multi-purpose power tool.

Background

The common power tools include power tools with output ends outputting rotary motion, such as electric drills, screwdrivers and the like; and the output end outputs power tools which reciprocate, such as reciprocating saws, jig saws and the like.

The existing power tool can only make the output end output one motion, for example, the electric drill can only output rotary motion; the reciprocating saw can only output reciprocating motion; however, when an operator is performing a task, such as finishing a house, a plurality of different power tools are often required, and purchasing these different power tools separately may burden the consumer.

For this reason, various power tool adapters have been developed in the prior art to extend the range of power tool applications, such as reciprocating adapters for power drills that do not require a motor and only include a reciprocating mechanism having an input connected to the drill bit of the drill, the reciprocating mechanism converting the rotational motion input by the drill bit to a reciprocating motion output by the output, so that the consumer only has to purchase one drill and a lower cost reciprocating adapter, which is equivalent to purchasing one drill and one reciprocating saw, which reduces the burden on the consumer.

Although the power tool plus adapter combination reduces costs and thus reduces the burden on the consumer, the output of the adapter combination tends to be less stable because the adapter is driven by the output of the power tool, the output of the adapter is located farther from the motor of the power tool, and it is difficult for the operator to control both the power tool and the adapter.

In order to solve the above problems, the applicant filed an invention patent application with application number 201310047997.1 to the intellectual property office of china on 6/2/2013, and the patent application provides a novel power tool, which includes a housing, a motor accommodated in the housing, and an output rod driven by the motor through a transmission mechanism, wherein the transmission mechanism includes a motion transformation mechanism, and the motion transformation mechanism is operable to drive the output rod to be in a first motion mode of outputting reciprocating motion and a second motion mode of outputting rotary motion. The output rod of the power tool can output two motion modes of rotation and reciprocation, so that the application range of the power tool is greatly widened, and the power tool can output two motion modes of rotation and reciprocation of the same output rod through a set of transmission mechanism by a motor, so that the output rod can output stable rotation or reciprocation and is convenient to operate.

However, the above-mentioned applications only provide a basic multipurpose tool main body, and the different requirements of the power tool under different working conditions are not considered for a while, for example, under some working conditions, the power tool needs an additional support to abut against a workpiece, so as to improve the processing efficiency and the processing stability; in other operating conditions, it is generally undesirable to have any obstruction on the power tool that affects the feed of the working head toward the workpiece. Therefore, the novel power tool cannot meet different requirements for supporting the workpiece under different working conditions, and the workpiece is not convenient to machine.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a convenient-to-use multipurpose power tool which can meet different requirements for abutting against workpieces under different working conditions.

In order to solve the problems, the technical scheme of the invention is as follows:

a power tool comprises a shell, a motor contained in the shell and an output rod driven by the motor through a transmission mechanism, wherein the transmission mechanism comprises a motion conversion mechanism, the motion conversion mechanism can be operated to drive the output rod to be in a first motion mode of outputting reciprocating motion and a second motion mode of outputting rotary motion, a clamping device used for clamping a working head is arranged on the output rod, the working head comprises a clamping part overlapped with the clamping device and a working part connected with the clamping part, the area where the working part is located is a working area, the output rod longitudinally extends and is provided with a central line, the power tool further comprises a supporting piece with a supporting surface, and the supporting piece is movably connected to the shell, so that the supporting surface can be selectively located in or out of the working area.

Preferably, when the output rod is in the first mode of motion, the support surface is located within the working area.

Preferably, when the output rod is in the second mode of motion and the power tool reaches a particular working condition, the support surface is located within the working area.

Preferably, when the output rod is in the second mode of motion, the support is located outside the working area.

Preferably, the power tool further comprises a biasing means for applying a force to the support member, the biasing means causing the support surface to have a tendency to move in a direction away from the housing along the extension of the centre line, the support surface being located within the working area against the workpiece at all times when the output lever is in the second mode of movement.

Preferably, the support moves linearly relative to the housing.

Preferably, the linear movement direction is an extending direction of the center line.

Preferably, the power tool further comprises a handle movably connected to the housing, and the handle is linked with the supporting member.

Preferably, the handle is integral with the support.

Preferably, the support member rotates relative to the housing.

Preferably, the shell is provided with a switching part, the support part rotates around a first axis relative to the switching part, and the first axis is perpendicular to the central line.

Preferably, the adapter part rotates around a second axis relative to the housing, and the second axis is perpendicular to the first axis.

Preferably, the second axis intersects the first axis.

Preferably, the support member linearly moves while rotating with respect to the housing.

Preferably, one of the support member and the housing is provided with a spiral cam groove extending in the direction of the center line, and the other of the support member and the housing is provided with a pusher fitted with the cam groove.

Preferably, the support surface is perpendicular to the centre line when the support is located within the working area.

Preferably, the power tool further comprises a handle movably connected with the housing, and the support member is linked with the handle.

Preferably, a position retaining mechanism is provided between the support member and the housing, and the position retaining mechanism retains the support member at a preset position relative to the housing.

Preferably, the position holding mechanism includes a locking member provided on one of the support member and the housing, a mating portion provided on the other of the support member and the housing, the locking member being movable between a locking position in which the locking member is mated with the mating portion and a release position in which the support member is held at the preset position; in the release position, the locking member is disengaged from the mating portion and the support member is movable relative to the housing.

Preferably, the position holding mechanism further includes a biasing member that is pressed against the locking member, and the biasing member biases the locking member to have a tendency to mate with the mating portion.

Preferably, an intermediate member is provided between the biasing member and the locking member, the biasing member urging the intermediate member to move in a first direction, and the intermediate member urging the locking member to move toward the locking position in a second direction perpendicular to the first direction.

Preferably, the first direction is an extending direction of the center line.

Preferably, the intermediate member is provided with a locking surface abutting against the locking member at the locking position, an inclined surface arranged at an angle with respect to the locking surface, and a receiving groove connected to the inclined surface, the inclined surface moves in the first direction to push the locking member to displace in the second direction so as to move toward the locking position, and the receiving groove receives the locking member at the releasing position.

Preferably, the locking member is a steel ball.

Preferably, the power tool is fixedly provided with a positioning piece, and the positioning piece is provided with a through hole for the steel ball to pass through along the second direction.

Preferably, the locking member rotates about the centerline.

Preferably, the locking member includes a first locking portion and a second locking portion which are provided centrally symmetrically with respect to the center line, and the first locking portion and the second locking portion cooperate to hold the support member at the preset position.

Preferably, the locking member moves in a direction perpendicular to the centerline.

Preferably, the support further includes a first side portion and a second side portion disposed on two sides of the support surface, an accommodating space is formed between the first side portion and the support surface, and the end of the output rod is located in the accommodating space when the support is located in the working area; the power tool further comprises a battery pack inserted on the shell, and when the supporting piece is located outside the working area, the battery pack is located in the accommodating space.

Preferably, the power tool further comprises a handle connected with the housing, the support member further comprises an extension portion connected with the support surface, and when the support member is located in the working area, the extension portion and the handle form a holding space in an opposite manner.

Compared with the prior art, the power tool comprises the supporting piece with the supporting surface, the supporting piece is movably connected to the shell, so that the supporting surface can be selectively positioned in or out of the working area, the supporting surface can abut against a workpiece when positioned in the working area, the supporting surface is not abutted against the workpiece when positioned out of the working area, and an operator can adjust the position of the supporting piece according to needs, so that different requirements of the power tool for abutting against the workpiece under different working conditions are met, and the power tool is greatly convenient to use.

Drawings

The invention is further described with reference to the following figures and embodiments.

Fig. 1 is a perspective view of a power tool provided in a first embodiment of the present invention;

FIG. 2 is an elevational view of the power tool of FIG. 1 with the support member in a first position;

FIG. 3 is another elevational view of the power tool of FIG. 1, with the support member in a second position;

FIG. 4 is a cross-sectional view of the position maintaining mechanism in the power tool shown in FIG. 1, with the locking member in the locked position;

FIG. 5 is a cross-sectional view of the position maintaining mechanism in the power tool shown in FIG. 1, with the locking member in the release position;

fig. 6 is a front view of a power tool provided in accordance with a second embodiment of the present invention;

FIG. 7 is a partial cross-sectional front view of the power tool provided in accordance with the third embodiment of the present invention, with the support member in the first position and the locking member of the position maintaining mechanism in the locked position;

FIG. 8 is another partial cross-sectional elevation view of the power tool of FIG. 7, with the support member in the second position and the locking member of the position maintaining mechanism in the release position;

FIG. 9 is a further partial cross-sectional front view of the power tool of FIG. 7, with the support member in the second position and the locking member of the position maintaining mechanism in the locked position;

FIG. 10 is a partial cross-sectional front view of the power tool provided in accordance with the fourth embodiment of the present invention, with the support member in the first position;

FIG. 11 is another partial cross-sectional elevation view of the power tool of FIG. 10, with the support member in a second position;

FIG. 12 is a cross-sectional view of the power tool of FIG. 11 taken along the direction J-J with the locking member of the position maintaining mechanism in the locked position;

FIG. 13 is another cross-sectional view of the power tool of FIG. 11 taken along the direction J-J with the locking member of the position maintaining mechanism in the release position;

FIG. 14 is a partial cross-sectional front view of the power tool provided in the fifth embodiment of the present invention, with the support member in the first position;

FIG. 15 is a partial cross-sectional front view of the power tool of FIG. 14, with the support member in a second position;

FIG. 16 is a partial cross-sectional front elevational view of the power tool illustrated in FIG. 14, with the support member in another, second position;

FIG. 17 is a partial cross-sectional view of the power tool of FIG. 16 taken along the direction K-K;

FIG. 18 is a partial cross-sectional front view of the power tool provided in accordance with the sixth embodiment of the present invention, with the support member in the first position;

FIGS. 19 and 20 are two partial cross-sectional front views of the power tool of FIG. 18, illustrating an intermediate stage of movement of the support member toward the second position;

FIG. 21 is a further partial cross-sectional front elevational view of the power tool illustrated in FIG. 18, with the support member in the second position;

fig. 22 is a partial cross-sectional view of the power tool shown in fig. 21 taken along the direction M-M.

Wherein,

2 casing 3 switch 6 output rod

52 operator 500 Power tool 707 handle

300 power tool 520 support 766 control panel

320 support 522 supports 768 wire

322 support surface 531 elastic member 770 through hole

323 first runner 600 power tool 772 cross bore

324 second runner 620 support 800 power tool

325 first guide 625 guide 820 support

326 second guide 628 biasing member 822 support surface

327 strip body 630 locking piece 807 handle

328 biasing member 631 intermediate member 860 gripping space

329 Tab 633 first detent 876 cam slot

330 locking element 635 second positioning hole 878 pushing element

332 bulge 647 operating button 880 first acting part

333 first positioning hole 653 limit groove 882 second acting part

335 second positioning hole 662 protruding column 884 first rod

337 third positioning hole 664 locking surface 886 second rod

338 first locking portion 666 and ramp 888 third rod

339 fourth positioning hole 668 receiving groove 890 elastic pressing plate

340 second locking portion 670 positioning piece 892 pivot

342 locking member body 672 and 894 elastic projection

346 arcuate groove 674 longitudinal groove 896 pockets

347 operating knob 700 Power tool 900 Power tool

348 first opening 720 support 920 support

349 second aperture 722 bearing surface 922 bearing surface

350 first side portion 728 biasing member 950 first side portion

352 second side 730 locking element 952 second side

353 limit groove 733 first positioning hole 907 handle

307 handle 735 second alignment aperture 956 extension

356 extension 738 locking part 960 gripping space

360 holding space 742 main part 994 elastic bulge

401 clamp 747 operating button 995 battery bag

996 pit 998 switching part

997 second axis 999 first axis

Detailed Description

Fig. 1 to 5 show a power tool 300 according to a first embodiment of the present invention.

Referring to fig. 1 and 2, the power tool 300 of the present embodiment is a multipurpose power tool, and includes a housing 2, a motor housed in the housing 2, and an output rod 6 driven by the motor through a transmission mechanism, the transmission mechanism including a motion conversion mechanism operable to drive the output rod 6 in a first motion mode of outputting a reciprocating motion and a second motion mode of outputting a rotational motion. The output shaft 6 extends lengthwise and has a centre line X-X about which, in use of the power tool 300, rotation of the operating member 52 of the movement transformation mechanism about the centre line X-X of the output shaft 6 can switch the mode of movement of the output shaft 6.

The output rod 6 of the power tool 300 can output two motion modes of rotation and reciprocation, so that the application range of the power tool is greatly widened, and the power tool realizes the two motion modes of rotation and reciprocation of the same output rod through a set of transmission mechanism by a motor, so that the output rod can output stable rotation or reciprocation and is convenient to operate.

The output rod 6 can be connected with a clamping device 401, and the clamping device 401 can clamp different types of working heads, such as saw blades capable of reciprocating to cut workpieces, and hexagonal-shank drills and hexagonal-shank screwdriver bits capable of rotating to process workpieces. When the saw blade is clamped on the clamping device 401, the output rod 6 is in a first motion mode of output reciprocating motion by adjusting the operating piece 52, at the moment, the power work 300 is used as a reciprocating tool, and after the motor is started, the output rod 6 reciprocates to drive the saw blade to reciprocate to cut a workpiece; when the clamping device 401 is used to clamp a drill, the output rod 6 is set to the second motion mode of outputting a rotational motion by adjusting the operating member 52, and at this time, the power tool 300 is used as a rotary tool, and after the motor is started, the rotational motion of the output rod 6 drives the drill to rotate, so as to punch a hole in a workpiece. The working head comprises a clamping portion overlapped with the clamping device 401 and a working portion connected with the clamping portion, and the area where the working portion is located is a working area. The working area is the area on the side of the plane away from the housing 2, bounded by a plane perpendicular to the centre line X-X of the output rod 6 and abutting the furthest end of the clamping device 401 away from the motor.

During the reciprocating motion of the saw blade for cutting a workpiece, a power tool is generally required to provide a support against the workpiece, so that the cutting efficiency and the cutting stability are improved; while the drill bit is drilling into the workpiece in a rotary motion, it is generally undesirable to have any obstruction on the power tool that may affect the feed of the drill bit toward the workpiece.

Referring to fig. 1 to 3, in order to make the power tool 300 meet different requirements for abutting against a workpiece under different working conditions, the power tool 300 of the present embodiment further includes a supporting member 320 having a supporting surface 322, the supporting member 320 is movably connected to the housing 2 and can move between a first position and a second position, in the first position shown in fig. 2, the supporting surface 322 abuts against the workpiece, and in the second position shown in fig. 3, the supporting surface 322 does not abut against the workpiece. When the support 320 is in the first position, the support surface 322 is within the work area; when the support member 320 is in the second position, the support surface 322 is outside the working area, whereby the support member 320 is movably attached to the housing 2 such that the support surface 322 is selectively positioned inside or outside the working area.

In particular, in the first position as shown in FIG. 2, the support surface 322 is located within the work area. At this time, the support surface 322 is remote from the housing 2 relative to the clamping device 401 on the side of the output rod 6 protruding out of the housing 2 and can abut against the workpiece. In the second position shown in fig. 3, the support surface 322 is outside the working area, in which case the support surface 322 is adjacent to the housing 2 relative to the clamping device 401 on the side of the output rod 6 protruding out of the housing 2, without any obstruction to the machining of the workpiece by the working head clamped on the clamping device 401.

In use of the power tool 300, the support 320 may be in a first position as shown in fig. 2 when the output lever 6 is in the first mode of motion. This is generally true for a saw blade having an output shaft 6 coupled for reciprocating motion to cut a workpiece, where the power tool 300 is used as a reciprocating type to cut a workpiece, and the support surface 322 is located in the working area to always abut against the workpiece to improve the cutting efficiency and cutting stability of the saw blade.

When the output rod 6 is in the second mode of motion and the power tool 300 reaches a particular state of operation, the support 320 may be in the first position as shown in fig. 2. This is generally true for a drill bit coupled to the output shaft 6 for rotary motion to drill a workpiece, where the power tool 300 is used as a rotary-type tool and the support surface 322 is located in the working area against the workpiece when the drill bit is advanced toward the workpiece to a particular depth to assist the operator in determining the depth of penetration of the drill bit.

In the preferred embodiment, the output rod 6 extends lengthwise and has a centerline X-X, and the support surface 322 is perpendicular to the centerline X-X when the support member 320 is in the first position shown in FIG. 2. With this arrangement, the supporting surface 322 can be brought into contact with the workpiece to the maximum extent, and the power tool 300 can be used conveniently, regardless of whether the supporting surface 322 is always abutted against the workpiece or the supporting surface 322 is abutted against the workpiece when the power tool 300 reaches a certain depth of machining. It will be appreciated by those skilled in the art that when the supporting member 320 is located at the first position, the supporting surface 322 may be abutted against the workpiece at other included angles, such as 30 degrees, 45 degrees, 60 degrees, etc., and all similar technical solutions should be covered by the present invention.

The output rod 6 is in the second mode of motion and the support 320 may be in the second position as shown in fig. 3. At this time, the supporting surface 322 is located outside the working area and the working head mounted on the clamping device 401 is located in front of the supporting surface 322, and the support member 320 does not obstruct the working of the workpiece by the workpiece head. This is generally true for a drill bit coupled to the output shaft 6 for rotary motion to drill a workpiece, where the power tool 300 is used as a rotary-type tool, and the support surface 322 is located outside the working area and within the housing 2, without completely impeding the drilling of the drill bit into the workpiece and without significantly increasing the volume of the power tool 300.

Referring to fig. 2 and 3, in the present embodiment, the supporting member 320 is directly movably connected to the housing 2, and preferably, the supporting member 320 moves linearly relative to the housing 2, so that the supporting member 320 moves between a first position shown in fig. 2 and a second position shown in fig. 3. In the preferred embodiment, the housing 2 is provided with a sliding slot, the support member 320 is provided with a guide member, and the guide member slides in the housing 2 to linearly move the support member 320 relative to the housing 2.

Specifically, referring to fig. 1 and 4, the housing 2 is provided with a first sliding groove 323 and a second sliding groove 324, and the first sliding groove 323 and the second sliding groove 324 are symmetrically arranged relative to the center line X-X of the output rod 6 and have the same shape. The supporting member 320 is provided with a first guide 325 and a second guide 326 which are respectively matched with the first sliding groove 323 and the second sliding groove 324 in a sliding manner, and the first guide 325 and the second guide 326 are symmetrically arranged relative to the central line X-X of the output rod 6 and have the same shape. The second guide 326 and the second sliding groove 324 are coupled in the same manner as the first guide 325 and the first sliding groove 323, and the first guide 325 and the first sliding groove 323 are described as an example.

In this embodiment, the first slide groove 323 has a cross section in a horizontal shape in a "convex" shape, and the first guide 325 is a conditional extension member including a bar-shaped main body 327 and a wing plate 329 extending from both sides of the bar-shaped main body 327, the bar-shaped main body 327 is engaged with the upper half portion of the "convex" shaped first slide groove 323, and the wing plate 329 is engaged with both ends of the lower half portion of the "convex" shaped first slide groove 323, whereby the first guide 325 slides stably and reliably in the first slide groove 323, thereby guiding the linear movement of the support member 320.

In this embodiment, the housing 2 is provided with a slide groove, and the support member 320 is provided with a guide member. It will be appreciated by those skilled in the art that the housing 2 may be provided with a guide member, and the support member 320 may be provided with a slide slot slidably coupled with the guide member, so that the support member 320 can be moved linearly relative to the housing 2.

In this embodiment, the two guide members are disposed on the supporting member 320, and correspondingly, the two guide grooves are disposed on the housing 2, so that the supporting member 320 can stably linearly move relative to the housing 2. It will be appreciated by those skilled in the art that only one guide member and one guide slot may be provided.

It will be appreciated by those skilled in the art that the guide may take other forms, such as providing only a strip-like body, or mating a ball or roller-like guide with a runner, and likewise allowing linear movement of the support member 320 relative to the housing 2.

In the present embodiment, the supporting member 320 linearly moves relative to the housing 2 on the outer surface of the housing 2, which can provide a good visual interface for an operator, and those skilled in the art can understand that the linear movement of the supporting member 320 relative to the housing 2 in the housing 2 does not affect the using effect. Therefore, the technical solutions similar to the embodiment are not described in detail, and all of the technical solutions are covered by the protection scope of the present invention.

Referring to fig. 2 and 3, in the present embodiment, the linear moving direction of the supporting member 320 relative to the housing 2 is the extending direction of the center line X-X of the output rod 6. Because the output rod 6 extends lengthwise, in order to make the structure compact, the housing 2 and the output rod 6 extend in the same direction and have a certain extension length, and the supporting member 320 moves linearly relative to the housing 2 along the extension direction of the center line X-X of the output rod 6, the extension length of the housing 2 can be fully utilized without additionally arranging a part with a certain length for the sliding of the supporting member 320, so that the whole power tool 300 has a compact structure, small volume and convenient holding and use. Of course, it will be appreciated by those skilled in the art that the linear movement of the supporting member 320 relative to the casing 2 in other directions does not affect the use effect of the supporting member 320. All technical solutions similar to the embodiment are included in the scope of the present invention.

A position holding mechanism is provided between the support member 320 and the housing 2, and holds the support member 320 at a predetermined position with respect to the housing 2.

In the present embodiment, the predetermined position refers to the first position shown in fig. 2 and the second position shown in fig. 3, that is, the position holding mechanism may hold the supporter 320 at the first position shown in fig. 2 with respect to the casing 2, or may hold the supporter 320 at the second position shown in fig. 3 with respect to the casing 2.

Referring to fig. 4 and 5, the position maintaining mechanism includes a locking member 330 provided on the housing 1, a coupling portion provided on the supporting member 320, the locking member 330 being movable between a locking position in which the locking member 330 is coupled with the coupling portion and the supporting member 320 is maintained at a predetermined position, and a releasing position; in the release position, the locking member 330 is disengaged from the mating portion and the support member 320 is movable relative to the housing.

The position maintaining mechanism further includes a biasing member 328 that presses against the locking member 330, and the biasing member 328 applies a force to the locking member 330 such that the locking member 330 has a tendency to mate with the mating portion toward the mating portion.

In this embodiment, the locking member 330 rotates about the centerline X-X of the output lever to move between the locked position and the released position. Specifically, the locking member 330 includes a locking member main body 342, and the locking member 330 main body 342 is annularly coupled to the inner surface of the housing 2 to be movable between a locking position and a releasing position.

The locking member 330 further includes a first locking portion 338 and a second locking portion 340 protruding from the locking member main body 342 in a direction toward the housing 2, and the first locking portion 338 and the second locking portion 340 are arranged symmetrically with respect to the output rod center line X-X, wherein the first locking portion 338 is fitted to the first guide 325 to lock the first guide 325, and the second locking portion 340 is fitted to the second guide 326 to lock the second guide 326, so that the first locking portion 338 and the second locking portion 340 work together to hold the support member at a predetermined position, which is to be reliably held at the predetermined position of the housing 2.

In this embodiment, the mating portion is a positioning hole into which the locking member 330 can be partially inserted. Specifically, with reference to fig. 2 to 5, the first guide 325 is provided with a first positioning hole 333 and a second positioning hole 335 that are provided at a distance from each other in the extending direction of the center line X-X of the output lever 6, and when the first locking portion 338 is inserted into the first positioning hole 333, the first guide 325 is held at the first position; when the first locking portion 338 is inserted into the second positioning hole 335, the first guide 325 is maintained at the second position. Correspondingly, the second guide 326 is provided with a third positioning hole 337 and a fourth positioning hole 339 which are spaced apart from each other in the extending direction of the center X-X of the output lever 6, the second guide 326 is held at the first position when the second locking portion 340 is inserted into the third positioning hole 337, and the second guide 326 is held at the second position when the second locking portion 340 is inserted into the fourth positioning hole 339. The first positioning hole 333 and the third positioning hole 337 are arranged in a central symmetry with respect to a center line X-X of the output lever 6, the first locking portion 338 and the second locking portion 340 are respectively fitted into or disengaged from the first positioning hole 333 and the third positioning hole 337 at the same time, the second positioning hole 335 and the fourth positioning hole 339 are arranged in a central symmetry with respect to the center line X-X of the output lever 6, and the first locking portion 338 and the second locking portion 340 are respectively fitted into or disengaged from the second positioning hole 335 and the fourth positioning hole 339 at the same time. Each positioning hole is preferably provided on the tab 329 of the support member 320 so that a shorter locking portion can be inserted into the positioning hole, although the positioning hole may be provided at other positions of the support member 320.

As described above, the locking member main body 342 is slidably engaged with the inner surface of the housing 2, and the supporting member 320 is slidably engaged with the outer surface of the housing 2, so that the first locking portion 338 and the second locking portion 340 can be engaged with the positioning hole of the supporting member 320, referring to fig. 4 and 5, the housing 2 is provided with the first opening 348 and the second opening 349 for the first locking portion 338 and the second locking portion 340 to pass through.

Referring to fig. 4 and 5, in the present embodiment, the biasing member 328 is a coil spring, and for convenient installation of the coil spring, an arc-shaped groove 346 is formed in the housing 2, a protrusion 332 protrudes from the locking member main body 342, and the protrusion 332 at least partially protrudes into the arc-shaped groove 346, so as to limit the rotation range of the protrusion 332 and the locking member main body 342. The coil spring is accommodated in the arc-shaped groove 346, one end of the coil spring is abutted with one end part of the arc-shaped groove 346, and the other end of the coil spring is abutted with the protruding part 332, so that the layout is reasonable, and the structure is compact.

Referring to fig. 1, 4 and 5, in order to facilitate the operation of the locking member 330, the locking member 330 is provided with an operation knob 347 on a main body 342 thereof, the housing 2 is provided with an arc-shaped limiting groove 353, the operation knob 347 passes through the limiting groove 353 and protrudes out of the outer surface of the housing 2, the operation knob 347 rotates within the range of the limiting groove 353 to drive the first locking portion 338 and the second locking portion 340 to move between the locking position and the releasing position, and specifically, when the operation knob 347 abuts against one end of the limiting groove 353, the first locking portion 338 and the second locking portion 340 are located at the locking position; when the operation knob 347 abuts on the other end of the stopper groove 353, the first locking portion 338 and the second locking portion 340 are located at the release position.

The operation method of the position holding mechanism is described below.

Referring to fig. 4 and 5, when the locking member 330 is in the locking position shown in fig. 4, the biasing member 328 is compressed to push the limiting portion 332 to abut against the end of the arc-shaped groove 346, the first locking portion 338 is inserted into the first positioning hole 333 or the second positioning hole 335 through the first opening 348 to hold the first guiding member 325 at the first position or the second position relative to the housing 2, and correspondingly, the second locking portion 340 is inserted into the third positioning hole 337 or the fourth positioning hole 339 through the second opening 349 to hold the second guiding member 326 at the first position or the second position relative to the housing 2, so as to hold the supporting member at the first position or the second position relative to the housing 2.

With continued reference to fig. 4 and 5, during unlocking, the operator rotates the operating button 347 in the unlocking direction against the force of the biasing member 328 to rotate the locking member main body 342, the locking member main body 342 rotates to rotate the first locking portion 338 and the second locking portion 340, so that the first locking portion 338 is disengaged from the first positioning hole 333 or the second positioning hole 335, and the second locking portion 340 is also disengaged from the third positioning hole 337 or the fourth positioning hole 339, so as to reach the unlocking position shown in fig. 5, and the first guide member 325 and the second guide member 326 can slide relative to the housing 2, so that the supporting member can linearly move relative to the housing 2 to change the position of the supporting surface.

In the present embodiment, the biasing member 328 abuts against the housing 2, and the mating portion is disposed on the supporting member 320, but those skilled in the art can appreciate that the biasing member abuts against the supporting member, and the mating portion is disposed on the housing without affecting the use effect.

In the present embodiment, the mating portion is a positioning hole into which the locking portion can be partially inserted, and those skilled in the art can appreciate that other types of mating portions, such as a clamping jaw, or only a contact surface abutting against the locking portion, etc., can achieve the same function.

In this embodiment, the supporting member 320 includes two guiding members slidably coupled to the housing 2, and correspondingly, the locking member 330 includes two locking portions, and the two locking portions respectively lock one of the guiding members to the housing 2, so that the structure is neat and the locking is reliable.

Therefore, the technical solutions similar to the embodiment are not described in detail, and all of the technical solutions are covered by the protection scope of the present invention.

With continued reference to fig. 1-3, the supporting member 320 further includes a first side portion 350 and a second side portion 352 disposed on both sides of the supporting surface 322, and when the supporting member 320 is in the first position shown in fig. 2, the supporting surface 322, the first side portion 350, and the second side portion 352 enclose the end of the output rod 6 therebetween, and in particular, the supporting surface 322, the first side portion 350, and the second side portion 352 enclose a portion of the output rod 6 and the clamping device 401 therebetween, and the first side portion 350 and the second side portion 352 are provided with openings, thereby providing a certain degree of protection for the clamping device 401 without affecting the operator's view of the working state of the clamping device 401. Preferably, the first side portion 350 is disposed between the first guide 325 and the support surface 322, and the second side portion 352 is disposed between the second guide 326 and the support surface 322. The first and second side portions 350 and 352 extend in a direction parallel to the centerline X-X of the output rod 6 and have a width greater than the widths of the first and second guides. Those skilled in the art can think that the guiding element directly extends to the supporting surface to make a part of the guiding element become a side portion, or the side portion is not provided with an opening and other deformations, which are not described in detail, and all technical solutions similar to the present embodiment should be covered in the protection scope of the present invention.

With continued reference to fig. 1, the power tool 300 further includes a handle 307 connected to the housing 2, the handle 307 extending at an angle to the direction of extension of the housing 2. In this embodiment, the supporting member 320 further includes an extending portion 356 connected to the supporting surface 322, an insertion hole is formed at an end of the handle 307 away from the housing 2, and the extending portion 356 is bent and an end of the extending portion away from the supporting surface can be inserted into the insertion hole. When the support member 320 is in the first position, a portion of the support surface 322 and the extension portion 356 are opposite the handle 307 to form a gripping space 360. The handle 307 is provided with a switch 3 for controlling the motor, and when the power tool 300 is used, the hand of the operator extends into the holding space 360 and controls the switch 3.

Referring to fig. 1 to 3, in the present embodiment, the first sliding chute 323 and the second sliding chute 324 are only closed at one end far from the supporting surface 322, and when the first guide 325 and the second guide 326 abut against the closed end of the first sliding chute 323 and the second sliding chute 324 respectively in the moving direction of the supporting surface 322 close to the casing 2, the support 320 moves to the second position where the supporting surface 322 is closest to the casing 2, and the positioning is accurate; while the first and second slide grooves 323 and 324 are open at an end close to the support surface 322, the first and second guide members 325 and 326 can slide on the first and second slide grooves 323 and 324, respectively, in a direction away from the housing 2 and finally disengage from the housing 2 when the operator controls the locking member to be located at the release position by the operation knob 347. Therefore, the support 320 can be used as an accessory of the power tool, and an operator can select to use the support 320 or not to use the support 320, so that different operation habits of the operator are met. Of course, a limiting mechanism for keeping the supporting member 320 on the housing 2 and limiting the linear moving range of the supporting member 320 relative to the housing 2 may be disposed between the supporting member 320 and the power tool, and will not be described herein.

The following describes an operation method of the power tool 300 of the present embodiment.

Referring to fig. 2, 4 and 5, the supporting member 320 of the power tool 300 is maintained at the first position relative to the housing 2, specifically, the first locking portion 338 passes through the first opening 348 to mate with the first positioning hole 333 of the first guiding member 325, the second locking portion 340 passes through the second opening 349 to mate with the third positioning hole 337 of the second guiding member 326, and the supporting member 320 is reliably maintained at the first position. At this time, the support surface 322 is located in the working area, away from the housing 2 with respect to the clamping device 401, and the support surface 322 may abut against the workpiece at all times or when the power tool 300 reaches a certain processing depth.

Referring to fig. 3, 4 and 5, when the operator changes the position of the supporting member 320, the operator rotates the operating button 347 in the direction to release the locking member 330 to rotate the locking member main body 342, the locking member 330 rotates to drive the first locking portion 338 and the second locking portion 340 to rotate and disengage from the first positioning hole 333 and the third positioning hole 337, the operator can slide the supporting member 320, the supporting member 320 slides relative to the housing 2 for a distance exceeding the length of the first positioning hole 333 and the third positioning hole 337 in the direction of the center line X-X of the output rod 6, the first positioning hole 333 and the third positioning hole 337 are respectively offset from the first locking portion 338 and the second locking portion 340, the operator can release the operating button 347, the first locking portion 338 and the second locking portion 340 rotate in the locking direction by the biasing member 328 and respectively abut on the wing 329 of the first guide member 325 and the second guide member 326 to continue to slide the supporting member 320, when the supporting member 320 slides relative to the housing 2 until the first locking portion 338 is aligned with the second positioning hole 335 of the first guiding member 325, the first locking portion 338 automatically rotates in the locking direction under the action of the biasing member 328 and is clamped into the second positioning hole 335, at the same time, the second locking portion 340 is aligned with the fourth positioning hole 339 of the second guiding member 326 and is clamped into the fourth positioning hole 339 under the action of the biasing member 328, the supporting member 320 is reliably maintained at the second position shown in fig. 3, at the moment, the supporting surface 322 exits from the working area, and the supporting surface 322 does not cause any obstruction to the working head clamped on the clamping device 401 in the processing of the workpiece.

In the present embodiment, only one pair of the first positioning hole and the third positioning hole is provided for holding the support member at the first position, and therefore, only one pair of the first positioning hole and the third positioning hole is provided for the support member.

The above description takes the movement of the supporting member 320 from the first position to the second position as an example, and the operation method of the supporting member 320 from the second position to the first position is the same, and the difference is only the direction of the linear movement of the supporting member 320 relative to the housing 2, which is not described herein again.

Fig. 6 shows a power tool 500 provided by a second embodiment of the present invention.

The power tool 500 of the present embodiment is the power tool 300 of the first embodiment, and is added with a biasing device for applying force to the support member 520, the biasing device is preferably an elastic member 531, the elastic member 531 makes the support surface 522 have a tendency to move in a direction away from the housing 2 along the extending direction of the center line X-X of the output rod, when the output rod 6 is in the second movement mode of the output rotary movement, the first position is all positions within a predetermined stroke range of the movement of the support member 520 relative to the housing 2, and the support member 520 makes the support surface 522 always abut against the workpiece in the first position. It will be appreciated by those skilled in the art that other forms of biasing means than resilient members may be used to achieve the same effect.

This is generally applicable to the drill 7 connected to the output rod for rotating to punch a workpiece, in this case, the power tool 500 is used as a rotary tool, and during the drilling process of the drill 7 into the workpiece, the whole supporting member 520 gradually overcomes the force of the elastic member 531, so that the drill 7 can be continuously fed towards the workpiece, but the supporting surface 522 is always abutted against the workpiece under the action of the elastic member 531, so that during the drilling process of the drill 7 into the workpiece, the supporting surface 522 always abuts against the workpiece and guides the drill 7 to be fed towards the workpiece, so that the working state of the power tool 500 is stable.

The power tool 500 of the present embodiment is provided with the same position holding mechanism as the power tool 100 of the first embodiment, which holds the support member 520 on the housing 2 at a predetermined position, which in the present embodiment is the second position, and one of the first positions closest to the second position.

Fig. 7 to 9 show a power tool 600 according to a third embodiment of the present invention.

The power tool 600 of the present embodiment is mainly different from the power tool 300 of the first embodiment in that: the specific shape of the supporting member 620, the installation position on the housing 2, and the specific structure of the position retaining mechanism and the limiting mechanism for limiting the linear movement range of the supporting member 620 relative to the housing 2 are further provided between the supporting member 620 and the housing 2. The following is described one by one.

Referring to fig. 7 and 8, the supporting member 620 of the present embodiment is provided with only one guiding portion 625, and the guiding portion 625 is slidably coupled with the housing 2 in the housing 2 to linearly move the supporting member 620 relative to the housing 2, so that the supporting member 320 moves between the first position shown in fig. 7 and the second position shown in fig. 8. The guide portion 625 is provided in the housing 2, and has a small influence on the appearance of the power tool 600, thereby making the appearance of the power tool 600 more beautiful.

Referring to fig. 7 and 8, in the present embodiment, a limiting mechanism for limiting a linear movement range of the supporting member 620 relative to the housing 2 is further disposed between the supporting member 620 and the housing 2, the limiting mechanism enables the supporting member 620 to be retained on the housing 2, and the supporting member 620 can only move between the first position and the second position relative to the housing 2. Specifically, the limiting mechanism includes a projection 672 disposed on the supporting member 620, and a longitudinal groove 674 disposed on the housing 2 for the projection 672 to slide therein. Projection 672 is disposed on the end of guide 625 remote from support surface 622, as shown in fig. 7, and when projection 672 abuts the end of longitudinal groove 674 adjacent to clamp 401, support member 620 is in the first position; as shown in fig. 8, support member 620 is in the second position when projection 672 abuts the end of longitudinal groove 674 distal from clamp 401. Those skilled in the art can appreciate that the protrusion and the longitudinal groove may be disposed at other positions of the supporting member and the housing, respectively, or the protrusion is disposed on the housing and the longitudinal groove is disposed on the supporting member, and the movement of the supporting member relative to the housing may be limited, and any technical solutions similar to the present embodiment should be covered in the protection scope of the present invention.

Referring to fig. 7 to 9, the position maintaining mechanism of the present embodiment includes a biasing member 628, an intermediate member 631, and a locking member 630, which abut against each other in sequence, wherein the biasing member 628 abuts against the housing 2, the supporting member 620 is provided with a mating portion capable of mating with the locking member 630, the biasing member 628 pushes the intermediate member 631 to move in a first direction, and the intermediate member 631 pushes the locking member 630 to move toward a locking position in a second direction perpendicular to the first direction. In this embodiment, the first direction is an extending direction of the center line X-X of the output lever 6, and the locking member 630 moves in a second direction perpendicular to the center line to move between the locking position and the releasing position.

Specifically, the biasing member 628 is a coil spring, one end of which abuts against the housing 2, and the other end of which abuts against the intermediate member 631, and in order to facilitate the installation of the spring, a stud 662 for sleeving the coil spring is protruded from the intermediate member 631.

The intermediate member 631 is provided with a locking surface 664 for abutting against the locking member 630 in the locking position, an inclined surface 666 arranged at an angle to the locking surface 664, and a receiving groove 668 connected to the inclined surface 666, wherein the inclined surface 666 moves in a first direction to push the locking member 630 and displace the locking member 630 in a second direction to move towards the locking position, and the receiving groove 668 receives the locking member 630 in the release position.

In the present embodiment, the locking member 630 is a steel ball. The mating portion is a first positioning hole 633 and a second positioning hole 635 provided in the guide portion 625, and as shown in fig. 7, when the steel ball is inserted into the first positioning hole 633, the supporting member 620 is held at the first position, and as shown in fig. 9, when the steel ball is inserted into the second positioning hole 635, the supporting member 620 is held at the second position.

The power tool 600 is further provided with a positioning plate 670, the positioning plate 670 is provided with a through hole for the steel ball to pass through along the second direction, and the through hole provides a guide for the movement of the steel ball locking member 630 between the locking position and the releasing position.

In this embodiment, in order to facilitate the operation, the housing 2 is provided with a limit groove 653, the intermediate member 631 is provided with an operating button 647 protruding from the limit groove 653 to extend out of the outer surface of the housing 2, the operating button 647 moves within the range of the limit groove 653, and when the operating button 647 abuts against one end of the limit groove 653, the intermediate member 631 drives the steel ball to be located at the locking position; when the operating button 647 abuts against the other end of the limiting groove 653, the intermediate member 631 drives the steel ball to be located at the release position.

The following describes an operation method of the position holding mechanism of the present embodiment.

As shown in fig. 7, the position holding mechanism holds the supporting member 620 at the first position, specifically, the projection 672 on the supporting member 620 abuts against the end of the longitudinal groove 674 close to the clamping device 401, and the supporting member 620 is located at the first position; biasing member 628 urges intermediate member 631 into abutment with the first end of the retaining groove 653, and locking surface 664 on intermediate member 631 urges the steel ball into the first positioning hole 633, holding support member 620 in the first position.

When adjusting the position of the support 620 relative to the housing 2, the operator pushes the intermediate member 631 against the biasing member 628 in the direction of extension of the centre line X-X of the output lever 6 via the operating knob 647, so that the intermediate member 631 abuts against the other end of the limiting groove 653, during which the locking surface 664 on the intermediate member 631 is disengaged from the steel ball, which passes through the through hole in the positioning plate 670 and slides along the inclined surface 666 and finally drops into the receiving groove 668, the steel ball is completely disengaged from the first positioning hole 633 in the release position, at which time the operator can move the support 620 freely so that the support 620 moves to the second position shown in fig. 8, and the projection 672 on the support 620 abuts against the end of the longitudinal groove 674 remote from the clamping device 401.

After the supporting member 620 reaches the second position shown in fig. 8, the operator releases the operating button 647, the elastic force of the biasing member 628 pushes the intermediate member 631 to return to the position where it abuts against the first end of the limiting groove 653, during which the inclined surface 666 on the intermediate member 631 pushes the steel ball to move in the direction perpendicular to the center line X-X of the output rod 6, the steel ball passes through the through hole on the positioning piece 670 and is matched with the second positioning hole 635, the locking surface 664 on the intermediate member 631 abuts against the steel ball to retain the steel ball in the second positioning hole 635, and the supporting member 620 is retained in the second position shown in fig. 9.

The above description takes the process of moving the supporting member 620 from the first position to the second position and locking as an example, and the operation of moving the supporting member 620 from the second position to the first position and locking is the same, except for the moving direction of the supporting member 620, which is not described herein again.

Fig. 10 to 13 show a power tool 700 according to a fourth embodiment of the present invention.

The power tool 700 of the present embodiment is different from the power tool 300 of the first embodiment mainly in that: the relationship of the support member to the handle, and the direction of movement of the locking member in the position maintaining mechanism. As described in detail below.

Referring to fig. 10 and 11, the power tool 700 of the present embodiment further includes a handle 707 movably connected to the housing 2, preferably, the handle 707 is directly movably connected to the housing 2, and the supporting member 720 is coupled to the handle 707, so that the supporting member 720 is indirectly movably connected to the housing 2. Therefore, when the supporting member 720 moves between the first position shown in fig. 10 and the second position shown in fig. 11, the position of the handle 707 relative to the housing 2 changes simultaneously, so that when the supporting member 720 is located at different positions, a better holding experience can be provided for the power tool 700, and the operation comfort can be improved.

In the preferred embodiment, the handle 707 and the support 720 are integrally provided, so that the number of parts can be reduced, and the power tool 700 can be conveniently mounted.

Referring to fig. 10, in the present embodiment, the motor M is disposed in the housing 2, the control board 766 connected to the switch 3 is disposed in the handle 707, and in order to ensure that the control board 766 in the handle 707 is kept connected to the motor M in the housing 2 after the handle 707 moves relative to the housing 2, the control board 766 and the motor M are electrically connected through the wire 768. In order to connect the control board 766 and the motor M smoothly by the lead 768, a through hole 770 is provided in a region where the housing 2 and the handle 707 are butted against each other, and the lead 768 is connected to the motor M and the control board 766 through the through hole 770.

In the present embodiment, the motor M in the housing 2 and the control board 766 in the handle 707 are connected by the wire 768, and the structure is simple and the cost is low. It will be appreciated by those skilled in the art that conductive tracks and contacts are provided between the housing 2 and the handle 707, and when the support member 720 moves the handle 707 to a predetermined position, the contacts are electrically connected to the specific positions of the tracks, so as to ensure that the motor M in the housing 2 is electrically connected to the control board 766 in the handle 707.

Referring to fig. 12 and 13, in the present embodiment, the supporting member 720 slides on the outer surface of the housing 2 to move between the first position and the second position, and the power tool 700 further includes a position maintaining mechanism for maintaining the supporting member 720 between the first position and the second position with respect to the housing 2.

The position maintaining mechanism includes a biasing member 728 and a locking member 730 abutting against each other, the biasing member 728 abutting against the support member 720, a mating portion provided on the housing 2 to mate with the locking member 730, the locking member 730 being movable between a locking position in which the locking member 730 mates with the mating portion under the action of the biasing member 728, and a releasing position as shown in fig. 12, the support member 720 being maintained in the first position or the second position; as shown in fig. 13, in the release position, the locking member 730 is disengaged from the mating portion against the biasing member 728, and the support member 720 is movable relative to the housing 2.

Specifically, the supporting member 720 slides on the outer surface of the housing 2, a transverse hole 772 is formed at a portion of the housing 2, which is coupled to the supporting member 720, the locking member 730 includes a main body 742, the main body 742 is disposed through the transverse hole 772, one end of the main body 742 abuts against the biasing member 728, the other end of the main body protrudes out of the housing 2 and the supporting member 720 and serves as an operating button 747, and the locking member 730 protrudes out of a substantially middle position of the main body 742 to form a locking portion 738.

The mating portion is a positioning hole into which the locking portion 738 is partially inserted. Specifically, the housing 2 is provided with a first positioning hole 733 and a second positioning hole 735 at a certain distance in an extending direction along the center line X-X of the output rod, and when the locking portion 738 is inserted into the first positioning hole 733, the support member 720 is maintained at the first position; when the locking portion 738 is inserted into the second positioning hole 735, the support member 720 is held at the second position. In the present embodiment, the locking portion 738 is accommodated in the housing 2, and accordingly, the first positioning hole 733 and the second positioning hole 735 are disposed on the inner surface of the housing 2, but those skilled in the art can think that the locking portion and the positioning hole can be matched by some simple position changes, and any technical solutions similar to the present embodiment should be covered in the protection scope of the present invention.

In this embodiment, the main body 742 of the locking member 730 has a bar shape, and the locking member 730 moves linearly along the extension direction of the main body 742 between the locking position and the releasing position. Preferably, the lock 730 moves in a direction perpendicular to the output rod centerline X-X to move between the locked and released positions.

The operation method of the position holding mechanism is described below.

With continued reference to fig. 12 and 13, when the locking member 730 is located at the locking position shown in fig. 12, the biasing member 728 is compressed to push the locking portion 738 to be inserted into the first positioning hole 733 or the second positioning hole 735, and the supporting member 720 is maintained at the first position or the second position relative to the housing 2.

With continued reference to fig. 12 and 13, during unlocking, the operator pushes the operating button 747 linearly in the unlocking direction against the force of the biasing member 728 to disengage the locking portion 738 from the first positioning hole 733 or the second positioning hole 735, and reaches the unlocking position shown in fig. 13, the supporting member 720 can slide relative to the housing 2, and thus the supporting member 720 can linearly move relative to the housing 2 to change the position of the supporting surface 722.

Fig. 14 to 17 show a power tool 800 according to a fifth embodiment of the present invention.

The main differences between the power tool 800 of the present embodiment and the power tool 300 of the first embodiment include: the manner in which the support member is movably connected to the housing, and the specific structure of the position maintaining mechanism, are described in detail below.

Referring to fig. 14 and 15, in the present embodiment, the support member 820 linearly moves while rotating with respect to the housing 2, thereby moving between a first position shown in fig. 14 and a second position shown in fig. 15.

Specifically, the housing 2 is provided with a spiral cam groove 876 extending in the direction of the center line X-X of the output rod 6, the support member 820 is provided with a pusher 878 fitted to the cam groove 876, and the pusher 878 is fitted to the cam groove 876 so that the support member 820 linearly moves while rotating with respect to the housing 2. Preferably, the direction in which the support 820 linearly moves while rotating with respect to the housing 2 is the extending direction of the center line X-X of the output rod 6.

In the present embodiment, the spiral cam groove 876 is provided in the housing 2, and the pusher 878 is provided in the support 820, so that the volume of the support 820 can be reduced. In the present embodiment, the linear moving direction of the supporting member 820 while rotating relative to the housing 2 is the extending direction of the center line X-X of the output rod 6, so that the power tool 800 has a compact structure.

In this embodiment, the supporting member 820 includes a first acting portion 880 and a second acting portion 882, the propelling member 878 is disposed on the first acting portion 880 such that the first acting portion 880 can linearly move while rotating relative to the housing 2, the second acting portion 882 is pivotally connected to the first acting portion 880 by a pivot 892, an axis of the pivot 892 is perpendicular to a center line X-X of the output lever 6, and a supporting surface 822 is disposed on the second acting portion 882.

Second actuating portion 882 includes first rod 884, second rod 886 and third rod 888 coupled together in series, first rod 884 extending parallel to a centerline X-X of output rod 6, second rod 886 being perpendicular to first rod 884, third rod 888 being disposed at an obtuse angle to second rod 886, first rod 884 being coupled to first actuating portion 880 by a pivot 892, support surface 822 being disposed on second rod 886, and third rod 888 serving as an extension to form a gripping space 860 opposite handle 807 when support member 820 is in the first position as shown in fig. 14. In the present embodiment, the first rod 884, the second rod 886, and the third rod 888 are fixedly coupled, and the second rod 886 is perpendicular to the first rod 884, it will be appreciated by those skilled in the art that the second rod 886 may be fixedly coupled to the first rod 884 at other angles, or the second rod 886 may be pivotally coupled to the first rod 884, such that the support surface 822 may also be positioned against a workpiece at an angle relative to the centerline X-X of the output rod 6.

The position holding mechanism of the present embodiment includes a first holding device that holds the support member 820 at the first position on the housing 2, and a second holding device that holds the support member 820 at the second position on the housing 2, and the first holding device and the second holding device are different in structure.

Specifically, referring to fig. 14, the first retaining device includes a resilient pressing plate 890 disposed on the handle 807, the pressing plate 890 pressing the supporting member 820 to fix the supporting member 820 relative to the housing 2, and specifically, the resilient pressing plate 890 pressing the end of the third rod 888 away from the second rod 886 to retain the supporting member 820 on the handle 807, and the handle 807 is fixed to the housing 2, so that the supporting member 820 is fixed relative to the housing 2. The structure is simple.

Referring to fig. 16 and 17, the second retaining means includes a resilient protrusion 894 disposed on the housing 2, a recess 896 disposed on the support member 820, the resilient protrusion 894 being snapped into the recess 896, and the support member 820 being retained in the second position relative to the housing 2. Referring to FIG. 15, in this embodiment, the dimples 896 are disposed at a substantially central position of the third bars 888 of the support member 820, but those skilled in the art will appreciate that the dimples 896 may be disposed at other positions of the support member 820. In the present embodiment, the elastic protrusions 894 are disposed on the housing 2, and the recesses 896 are disposed on the supporting member 820, but those skilled in the art can also understand that the elastic protrusions may be disposed on the supporting member and the recesses may be disposed on the housing. In this embodiment, the number of the elastic protrusions 894 and the number of the concave recesses 896 are two, and the two concave recesses 896 are symmetrically arranged relative to the center line of the output rod. Therefore, the technical solutions similar to the embodiment are all covered by the protection scope of the present invention.

The following describes an operation method of the power tool 800 of the present embodiment.

As shown in fig. 14, the support member 820 of the power tool 800 is in the first position, the second rod 886 is perpendicular to the centerline X-X of the output rod 6, the support surface 822 is in the working area and perpendicular to the centerline X-X of the output rod 6, the end of the third rod 888 remote from the second rod 886 is compressed by the resilient compression plate 890, and the support member 820 is held in the first position.

When the position of the supporting member 820 is changed, the third rod 888 is disengaged from the elastic pressing plate 890 against the elasticity of the elastic pressing plate 890, the second acting portion 882 is rotated in the direction of the center line X-X of the output rod 6, since the pivot axis 892 about which the second reaction portion 882 rotates about the first reaction portion 880 is perpendicular to the centerline X-X, thus, when the second working portion 882 is rotated about the center line X-X of the output lever 6, the second working portion 882 does not move relative to the first working portion 880, so that rotation of the second acting portion 882 about the centerline X-X of the output shaft 6 will cause the first acting portion 880 to rotate about the centerline X-X of the output shaft 6, and as the first acting portion 880 rotates, the urging member 878 provided on the first acting portion 880 moves in the spiral cam groove 876 of the housing 2, and the entire supporting member 820 linearly moves while rotating with respect to the housing 2, gradually reaching the second position shown in fig. 15. In this process, the support surface 822 linearly moves while rotating with respect to the center line X-X of the output rod 6, but always perpendicular to the center line X-X of the output rod 6.

Because the third rod 888 is disposed at an obtuse angle with respect to the second rod 886, in the second position shown in FIG. 15, the third rod 888 is tilted away from the housing 2, so that the space occupied by the entire power tool 800 is relatively large, which is not conducive to use of the power tool 800, and at this time, the second active portion 882 can be pivoted about the pivot axis 892 with respect to the first active portion 880 to gradually reach another second position shown in FIG. 16, where the third rod 888 is adjacent to the housing 2 and is retained on the housing 2 by the engagement of the resilient protrusions 894 and the recesses 896, which can reduce the space occupied by the entire power tool 800.

The above description takes the state change of the supporting member 820 moving from the first position to the second position as an example, and the state change of the supporting member 820 moving from the second position to the first position is opposite to that, and is not repeated.

Fig. 18 to 22 show a power tool 900 according to a sixth embodiment of the present invention

The main differences between the power tool 900 of the present embodiment and the power tool 300 of the first embodiment include: the manner in which the support member is movably connected to the housing, the specific structure of the support member, and the specific structure of the position maintaining mechanism are described in detail below.

Referring to fig. 18 to 21, in the present embodiment, the support 920 rotates relative to the housing 2 to move between a first position shown in fig. 18 and a second position shown in fig. 21.

Preferably, the support 920 is universally rotatable with respect to the housing 2. Specifically, the housing 2 is provided with an adapter 998, the support 920 rotates around a first axis 999 relative to the adapter 998 to enable the support 920 to rotate around the first axis 999 relative to the housing 2, and the first axis 999 is perpendicular to a center line X-X of the output rod 6. The adaptor 998 rotates relative to the housing 2 about a second axis 997, the second axis 997 being perpendicular to the first axis 999, and the second axis 997 intersecting the first axis 999.

In this embodiment, the handle 907 is integrally provided with the housing 2, the adaptor 998 is provided at an end of the handle 907 remote from the housing 2, and when the adaptor 998 rotates about the second axis 997 with respect to the handle 907, the adaptor 998 rotates about the second axis 997 with respect to the housing 2.

Referring to fig. 18 and 21, the supporting member 920 further includes a first side 950 and a second side 952 disposed at two sides of the supporting surface 922, receiving spaces are formed between the first side 950 and the second side 952 and the supporting surface 922, and when the supporting member 920 is at the first position shown in fig. 18, the end of the output rod 6 is located in the receiving space; the power tool 900 further comprises a battery pack 995 attached to an end of the handle 907 remote from the housing 2, the battery pack 955 being located in the receiving space when the support 920 is in the second position shown in fig. 21. Therefore, when the supporting member 920 is located at the first position, the clamping device 401 mounted on the end of the output rod 6 can be accommodated in the supporting member to protect the clamping device 401, and when the supporting member 920 is located at the second position, the first side portion 950 and the second side portion 952 are clamped on the battery pack 995, so that the structure layout is reasonable, and the appearance is attractive. In this embodiment, the first side 950 and the second side 952 have the same shape and are symmetrically disposed with respect to the center line X-X of the output rod 6, and the first side 950 and the second side 952 have openings, thereby having a reasonable and beautiful structure.

An extension 956 is arranged between the supporting surface 922 and the adaptor 998, the extension 956 extends at an obtuse angle to the supporting surface 922, and when the support 920 is in the first position, the extension 956 and a part of the supporting surface 922 face the handle 907 to form a holding space 960.

Referring to fig. 18, 19, 21 and 22, the position maintaining mechanism of the present embodiment includes a pair of recesses 996 provided on the support 920, and two pairs of elastic protrusions 994 provided on the ends of the housing 2 and the handle 907 away from each other, respectively, wherein when the support 920 is in the first position shown in fig. 18, the recesses 996 are engaged with the elastic protrusions 994 on the end of the housing 2 away from the handle 907, the support 920 is maintained in the first position, when the support 920 is in the second position shown in fig. 21, the recesses 996 are engaged with the elastic protrusions 994 on the end of the handle 907 away from the housing 2, and the support 920 is maintained in the second position. In this embodiment, a pair of concave recesses 996 are provided on the supporting member 920, and two pairs of protrusions are provided on the housing 2 and the handle 907, respectively, but those skilled in the art will appreciate that a pair of elastic protrusions may be provided on the supporting member 920, and concave recesses capable of cooperating with the elastic protrusions may be provided on the housing 2 and the handle 907, respectively; in this embodiment, the number of the concave recesses 996 on the supporting member 920 is a pair, and the concave recesses 996 are respectively disposed on the first side portion 950 and the second side portion 952, and are symmetrically disposed relative to the center line X-X of the output rod 6.

The method of operation of the power tool 900 is described below.

As shown in fig. 18, at this time, the support 920 of the power tool 900 is in the first position, the support surface 922 is located in the working area and can abut against the workpiece, the recess 996 of the support 920 is engaged with the elastic protrusion 994 at the end of the housing 2 away from the handle 907, and the support 920 is maintained in the first position.

When the position of the supporting member 920 is changed, the friction force between the concave recesses 996 and the elastic protrusions 994 is overcome, so that the supporting member 920 rotates around the first axis 999 relative to the adaptor 998, and gradually rotates to the middle position shown in fig. 19, at this time, the first side 950 and the second side 952 are staggered with respect to the output rod 6, and then the supporting member 920 drives the adaptor 998 to rotate together around the second axis 997 relative to the housing 2, and reaches another middle position shown in fig. 20, at this time, the supporting surface 922 is far away from the output rod 6 relative to the extending part 956, and then the supporting member 920 rotates around the first axis 999 relative to the housing 2, and reaches the second position shown in fig. 21, the first side 950 and the second side 952 are clamped on the battery pack 995, and at the same time, the concave recesses 996 on the supporting member 920 are clamped on the elastic protrusions 994 at one end of the handle 907 far away from the.

The above description takes the state change of the supporting member 920 moving from the first position to the second position as an example, and the state change of the supporting member 920 moving from the second position to the first position is opposite to that, and is not repeated.

It will be appreciated by those skilled in the art that the invention can be implemented in other ways, provided that the technical spirit of the invention is the same as or similar to the invention, or that any changes and substitutions based on the invention are within the protection scope of the invention.

Claims

1. The utility model provides a power tool, includes the casing, accept in motor in the casing, by the output pole that the motor passes through drive mechanism drive, drive mechanism includes motion transformation mechanism, the drive that motion transformation mechanism is operable the output pole is in the first motion mode of output reciprocating motion and the second motion mode of output rotary motion, be provided with the clamping device who is used for the centre gripping working head on the output pole, the working head include with clamping device overlapping clamping part and the work portion of being connected with the clamping part, the region at work portion place is work area, the output pole lengthwise extension has the central line, its characterized in that: the power tool also includes a support member having a support surface, the support member being movably coupled to the housing such that the support surface is selectively located within or outside of the working area.

2. The power tool of claim 1, wherein: when the output rod is in the first motion mode, the support surface is located within the working area.

3. The power tool of claim 1, wherein: when the output rod is in the second motion mode and the power tool reaches a specific machining state, the support surface is located within the working area.

4. The power tool of claim 1, wherein: the support is located outside of the working area when the output rod is in the second mode of motion.

5. The power tool of claim 1, wherein: the power tool further comprises a biasing device for applying force to the support, the biasing device enables the support surface to have the tendency of moving towards the direction away from the shell along the extension direction of the central line, and when the output rod is in the second movement mode, the support surface is located in the working area and always abuts against the workpiece.

6. The power tool of claim 1, wherein: the support moves linearly relative to the housing.

7. The power tool of claim 6, wherein: the linear movement direction is the extension direction of the center line.

8. The power tool of claim 6, wherein: the power tool further comprises a handle movably connected to the shell, and the handle is linked with the supporting piece.

9. The power tool of claim 8, wherein: the handle is integrally provided with the support member.

10. The power tool of claim 1, wherein: when the supporting piece is located in the working area, the supporting surface is perpendicular to the central line.

11. The power tool of claim 1, wherein: the power tool further comprises a handle movably connected with the shell, and the supporting piece is linked with the handle.

12. The power tool of claim 1, wherein: a position retaining mechanism is arranged between the supporting piece and the shell and used for retaining the supporting piece at a preset position relative to the shell.