WO2014121728A1

WO2014121728A1 - Power tool and clamping device

Info

Publication number: WO2014121728A1
Application number: PCT/CN2014/071755
Authority: WO
Inventors: 顾育明; 钱明峰; 黄天星; 朱伯元; 闫明星; 龙军; 王家达; 吴建; 孟祥花
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2013-02-06
Filing date: 2014-01-29
Publication date: 2014-08-14

Abstract

A power tool, comprising a housing (2), a motor accommodated within the housing, and an output shaft (6) driven by the motor via a transmission mechanism; the transmission mechanism comprises a motion converter; the motion converter drives operation of the output shaft (6) to be in a first motion mode outputting a reciprocating motion and in a second motion mode outputting a rotary motion. The output shaft of the power tool can output both a rotary mode and a reciprocating mode, thus greatly broadening the application range of the power tool. In addition, the power tool uses a motor to drive the same output shaft to output both rotary and reciprocating motions via one transmission mechanism, such that the output shaft can output steady rotary and reciprocating motions, facilitating the use thereof. The present invention also relates to a clamping device capable of clamping on different work heads.

Description

Power tools and clamping devices

The present invention relates to a power tool, and more particularly to a multi-purpose power tool. The invention also relates to a clamping device that can hold different working heads.

Background technique

Commonly used power tools include power tools that output rotational motion at the output end, such as electric drills, screwdrivers, etc.; and power tools that output reciprocating motion at the output end, such as reciprocating saws, jigsaws, and the like.

The existing power tools usually only output a kind of motion at the output end, for example, the electric drill can only output the rotary motion; the reciprocating saw can only output the reciprocating motion; however, the operator often needs to use a certain work, such as when decorating the house. Buying these different power tools separately can be a burden on consumers with a variety of different power tools.

To this end, different power tool adapters have appeared in the prior art to expand the range of use of the power tool, such as a reciprocating adapter for an electric drill, which does not require a motor and only needs to include a set of reciprocating mechanisms. The input end of the adapter is connected to the drill bit of the electric drill, and the reciprocating mechanism converts the rotary motion of the drill input into the reciprocating motion of the output of the output, so that the consumer only needs to purchase one electric drill and a lower price reciprocating adapter. It is equivalent to purchasing an electric drill and a reciprocating saw, which relieves the burden on the consumer.

This combination of power tool and adapter, while reducing the cost and reducing the burden on the consumer, is because the converter is driven by the output of the power tool, the output of the converter is far from the motor of the power tool, and the operation It is difficult to control the power tools and converters at the same time, so the output of this combined adapter is often not stable.

Summary of the invention

To overcome the deficiencies of the prior art, the problem to be solved by the present invention is to provide a work-stable power tool whose output rod can output both rotary and reciprocating motion modes.

In order to solve the above problems, the technical solution of the present invention is: a power tool including a housing, a motor housed in the housing, an output rod driven by the motor through a transmission mechanism, the transmission mechanism including a motion conversion mechanism The motion conversion mechanism is operable to drive the output lever to be in a first motion mode of outputting a reciprocating motion and a second motion mode of outputting a rotational motion.

The motion conversion mechanism includes a driving mechanism and a mode switching mechanism, and the mode switching mechanism includes a switching member and a limiting mechanism that are coupled to each other, and the switching member is movable between two positions, wherein the output is in the first position The lever is in the first motion mode, the switching member is disconnected from the driving mechanism and connected to the housing to fix the limiting mechanism and the housing; in the second position, the losing The output lever is in the second motion mode, the switching member is coupled to the drive mechanism, and the restriction mechanism is fixed circumferentially with the output rod.

The drive mechanism includes a driving body that is driven to rotate by the motor, and a switching mechanism provided between the driving body and the output rod, and the switching member is coupled to the driving body at the second position. The conversion mechanism includes a circumferential cam groove disposed on one of the driving body and the output rod, and is disposed on the other of the driving body and the output rod to be coupled with the cam groove Pusher.

The driving body has a hollow receiving cavity, and the cam groove is disposed on an inner surface of the driving body. The driving body includes a first driving member, a second driving member and a fixing member connecting the first driving member and the second driving member together, and the cam groove is partially disposed on the first driving member Another part is disposed on the second driving member. A portion of the cam groove and another portion are respectively disposed on both sides of the center line of the cam groove. The pushing member includes a steel ball, and one of the driving body and the output rod is provided with a counterbore partially receiving the steel ball.

The limiting mechanism includes a limiting member sleeved on the output rod, a first longitudinal groove disposed on the limiting member and the extending direction, and a first extending on the output rod along an axial direction of the output rod The two longitudinal slots and the connecting members for the first and second longitudinal slots to fix the limiting member and the output rod circumferentially together.

a positioning member is disposed on the housing, the positioning member is relatively fixed to the housing in a rotation direction of the output rod, and a matching mechanism is disposed between the positioning member and the switching member, When the switching member is in the first position, the matching mechanism connects the positioning member to the switching member, and when the switching member is in the second position, the switching member is disengaged from the positioning member.

The mating mechanism includes a protrusion disposed on one of the positioning member and the switching member, and a card slot disposed on the other of the positioning member and the switching member, the switching member is located In the first position, the protrusion is coupled to the card slot, and when the switching member is in the second position, the protrusion is disengaged from the card slot. The plurality of protrusions and the card slots are symmetrically distributed with respect to the rotation axis of the output rod. The number of the protrusions and the card slots is an even number, and the even pairs of the protrusions and the card slots comprise several groups, and the two pairs of protrusions and the card slots in a straight line are a group, and the size of each group of protrusions and the card slot different. The positioning member is axially movable on the housing, and a spring is disposed between the positioning member and the housing, and the spring provides a biasing force for the protrusion to be coupled with the card slot. .

The power tool includes an operating member disposed on the housing, and the operating member rotates around an axis of rotation of the output rod to move the switching member along an axial direction of the output rod. A switching channel and a first cylindrical pin slidable in the conversion channel are disposed between the operating member and the switching member, and the conversion groove is a channel. a first planetary gear train and a second planet sequentially connected between the motor and the driving body a gear train, the internal spur of the second planetary gear train is movable between two shifting positions along an axial direction of the output rod, and in the first shifting position, the internal sprocket is disengaged from the housing, The output rod moves at the first speed; in the second shift position, the inner ridge is relatively fixed to the housing, and the output rod moves at the second speed.

A second channel is disposed between the operating member and the inner sprocket with a shifting channel and an axis of rotation slidable within the shifting channel.

a first channel is disposed between the operating member and the switching member, and a first channel is disposed in a circumferential direction of the output rod. The longest distance moved in the first channel is the same as the longest distance the second cylindrical pin moves in the second channel.

The conversion channel further includes a third channel communicating with the first channel, the third channel extending along a circumference of the output rod and perpendicular to an axis of rotation of the output rod, the shifting The passage further includes a fourth channel communicating with the second channel, the fourth channel extending along a circumference of the output rod and inclined with respect to an axis of rotation of the output rod, the first cylindrical pin and the second column The pin is simultaneously moved in the first channel and the second channel and has the same moving distance in the circumferential direction of the output rod; the first cylindrical pin and the second cylindrical pin are simultaneously in the first The three channels and the fourth channel move and have the same moving distance in the circumferential direction of the output rod.

The third channel extends at one end of the first channel corresponding to the second position of the switching member. The ends of the fourth channel and the second channel away from each other are located on the same line in the circumferential direction of the output rod. In the circumferential direction of the output rod, both ends of the switching channel are flush with both ends of the shifting channel.

A planetary gear reduction mechanism is disposed between the motor and the drive mechanism, and the mode switching mechanism is disposed at an end of the drive mechanism away from the planetary gear reduction mechanism.

The power tool is a hand-held power tool. The power tool further includes a handle coupled to the housing, the handle extending in an obtuse angle with the axial direction of the output rod.

The output rod is disposed coaxially with the output shaft. The driving body is disposed coaxially with the output rod. The switching member is disposed coaxially with the output rod. The limiting member is disposed coaxially with the output rod. The positioning member is disposed coaxially with the output rod.

The power tool further includes a support having a support surface, the support being movably coupled to the housing and movable between a first position and the second position, the support being in the first position The face abuts against the workpiece, and in the second position, the support surface does not abut the workpiece.

When the output rod is in the first motion mode, the support member is located at the first position. When the output rod is in the second motion mode and the power tool reaches a specific processing state, The support is located in the first position. The support member is in the second position when the output rod is in the second motion mode. The power tool further includes biasing means for biasing the support member, the biasing means having a tendency for the support surface to move in a direction away from the housing along an extending direction of the center line, When the output rod is in the second motion mode, the first position is all positions within a predetermined range of travel of the support relative to the housing.

The support moves linearly relative to the housing. The direction of the linear movement is the direction in which the center line extends. The power tool further includes a movable handle coupled to the housing, the handle being coupled to the support member. The handle is integrally provided with the support.

The support rotates relative to the housing. An adapter is disposed on the housing, and the support member rotates relative to the adapter portion about a first axis, the first axis being perpendicular to the center line. The adapter rotates about the second axis relative to the housing, the second axis being perpendicular to the first axis. The second axis intersects the first axis.

The support moves linearly while rotating relative to the housing. One of the support member and the housing is provided with a spiral cam groove extending in a direction of the center line, and the other of the support member and the housing is disposed with the cam groove Connected pusher. The direction of the linear movement is the direction in which the center line extends.

The support surface is perpendicular to the centerline when the support is in the first position. The power tool also includes a handle movably coupled to the housing, the support member being coupled to the handle.

A position maintaining mechanism is disposed between the support member and the housing, and the position maintaining mechanism holds the support member at a preset position with respect to the housing. The position maintaining mechanism includes a locking member disposed on one of the support member and the housing, and another upper fitting portion disposed in the support member and the housing, the locking member being Moving between a locking position in which the locking member is mated with the mating portion, the support member being held in the predetermined position, and in the releasing position, the locking member and the locking member The mating portion is disengaged and the support member is movable relative to the housing.

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

An intermediate member is disposed between the biasing member and the locking member, the biasing member urges the intermediate member to move in a first direction, and the intermediate member pushes the second direction in a second direction perpendicular to the first direction The locking member moves toward the locked position. The first direction is an extending direction of the center line. The intermediate member is provided with a locking surface abutting against the locking member at the locking position, a sloped surface disposed at an angle with the locking surface, and a receiving groove connected to the inclined surface, the inclined surface along the first The directional movement urges the locking member to be displaced in the second direction to move toward the locked position, and the receiving groove receives the locking member in the released position. The locking member is a steel ball. a positioning piece is fixed on the power tool, and the fixing The bit plate is disposed on a through hole through which the steel ball passes in the second direction.

The locking member is rotated about the centerline to move between the locked position and the released position. The locking member includes a first locking portion and a second locking portion symmetrically disposed with respect to a center of the center line, the first locking portion and the second locking portion cooperating to hold the support member at the preset position. The locking member moves in a direction perpendicular to the centerline to move between the locked position and the released position.

The support member further includes a first side portion and a second side portion disposed on two sides of the support surface, and a receiving space is formed between the first side portion, the second side portion and the support surface, the support member The end of the output rod is located in the receiving space when in the first position; the power tool further includes a battery pack inserted on the housing, and when the support is in the second position, The battery pack is located in the receiving space. The power tool further includes a handle connected to the housing, the support member further includes an extension connected to the support surface, and when the support member is in the first position, the extension portion forms a holding space opposite to the handle .

The output rod is provided with a clamping device for clamping the working head, the working head includes a clamping portion overlapping the clamping device and a working portion connected to the clamping portion, where the working portion is located For the work area, the output rod extends longitudinally and has a centerline, the power tool further includes a support having a support surface, the support member being movably coupled to the housing such that the support surface is selectable Located within or outside the work area.

When the output rod is in the first motion mode, the support surface is located within the working area. The support surface is located within the working area when the output rod is in the second motion mode and the power tool reaches a particular processing state. The support member is located outside of the work area when the output rod is in the second motion mode. The power tool further includes biasing means for biasing the support member, the biasing means having a tendency for the support surface to move in a direction away from the housing along an extending direction of the center line, When the output rod is in the second motion mode, the support surface is always in the working area and abuts against the workpiece.

Compared with the prior art, the output rod of the power tool of the present invention can output both rotating and reciprocating motion modes, thereby greatly expanding the range of use of the power tool, and the power tool of the present invention is realized by the motor through a set of transmission mechanisms. The same output rod outputs two rotation and reciprocating motion modes, so that the output rod can output stable rotation or reciprocating motion, which is convenient to use. More preferably, the power tool of the present invention comprises a movable support member connected to the housing, and the operator can adjust the position of the support member as needed to meet the different requirements of the power tool for abutting the workpiece under different working conditions, Convenient for the use of power tools.

The invention also provides a power tool with convenient operation, the technical solution is: a power tool comprising a housing, a motor housed in the housing, a transmission mechanism connected to the motor, and driven by the transmission mechanism An output rod, the transmission mechanism driving the output rod to output at least two different working conditions The power tool further includes a switch for controlling the motor and an operating member for controlling the output lever to be in different working states, the power tool further includes a handle connected to the housing, and the handle is provided with a first a holding area, the housing is provided with a second holding area, the switch is disposed on the first holding area, and the operating member is disposed on the second holding area, the operator's The hands are placed in the first holding area and the second holding area, respectively, to hold the power tool and control the switch and the operating member, respectively.

The first grip area is disposed at a junction of the handle and the housing. The second gripping zone is disposed at an end of the housing remote from the handle housing. The angle is an obtuse angle. The first holding area includes a first grip portion for a tiger's mouth held by an operator's hand, and the second holding portion includes a second grip portion for a tiger's mouth held by an operator's hand to pass through the housing The plane of the central axis is bounded, and the housing is divided into opposite sides, and the first grip portion and the second grip portion are respectively located on different sides of the housing. The second holding area is provided with a holding guiding portion to divide the housing into opposite sides by the plane of the central axis of the housing, the holding guiding portion and the operating member Located on different sides of the housing.

The different operating states include output rods outputting different modes of motion. Different modes of motion include rotational motion and reciprocating motion. The different operating states include output rods outputting different speeds of motion.

Compared with the prior art, the power tool of the present invention is held by both hands of the operator and controls the switch and the operating member respectively, the power tool is held stably so that the output rod has a stable output; and the operating member can be held by the housing. One hand control makes it easy and reliable to switch the working state of the power tool.

The invention also provides a power tool which can output different working modes for convenient use, and the technical solution is: a power tool comprising a housing, a motor housed in the housing, and an output driven by the motor through a transmission mechanism a transmission mechanism comprising a speed changing mechanism and a motion conversion mechanism, the power tool further comprising a control mechanism, the control mechanism being operable to cause the output rod to be in at least three working modes, in the first working mode, The output rod outputs a reciprocating motion at a first speed; in the second operating mode, the output rod outputs a rotational motion at a second speed; in the third operating mode, the output rod outputs a rotational motion at a first speed.

The control mechanism includes an operating member that simultaneously controls the speed changing mechanism and the motion converting mechanism. The operating member rotates about an axis of the output rod. The operating member has three circumferential positions, the output rod is in the first working mode when the operating member is in the first circumferential position, and the output is when the operating member is in the second circumferential position. The rod is in the second working mode; when the operating member is in the third circumferential position, the output rod is in the third working mode.

The speed conversion mechanism is provided between the motor and the motion conversion mechanism. The motion conversion mechanism includes a drive mechanism and a mode switching mechanism, and the mode switching mechanism is disposed away from the speed change mechanism with respect to the drive mechanism.

The motion conversion mechanism includes a driving mechanism and a mode switching mechanism, and the operating member and the mode a switching channel and a first cylindrical pin slidable in the conversion channel are disposed between the switching mechanisms, the first cylindrical pin sliding in the conversion channel to cause the mode switching mechanism to change position and switch The reciprocating or rotating motion mode of the output rod.

The conversion channel includes a first channel and a third channel, wherein the first channel extends along a moving direction of the operating member and is inclined with respect to a moving direction of the mode switching mechanism, a three-channel extending along a moving direction of the operating member and perpendicular to a moving direction of the mode switching mechanism, wherein the first cylindrical pin is located at an end of the first channel away from the third channel The output rod outputs a reciprocating motion, and when the first cylindrical pin is located in the third channel, the output rod outputs a rotational motion.

The speed changing mechanism includes a speed reducing mechanism and a shifting switching mechanism, and a shifting channel and a second cylindrical pin slidable in the shifting channel are disposed between the operating member and the shifting switching mechanism, and the second The cylindrical pin slides in the shifting channel to cause the shifting mechanism to shift position and switch the output speed of the output rod.

The shifting channel includes a second channel and a fourth channel that communicate with each other, and the second channel and the fourth channel extend in a moving direction of the operating member and move relative to the shifting mechanism The direction is inclined, the ends of the second channel and the fourth channel away from each other are flush in the moving direction of the shift switching mechanism, and the second cylindrical pin is in the second channel and the second When the four channels are away from each other, the output rod moves at the first speed, and when the second cylindrical pin is at the junction of the second channel and the fourth channel, the output The rod moves at the second speed.

a shifting channel and a second cylindrical pin slidable in the shifting channel are disposed between the operating member and the shifting switching mechanism, and the second cylindrical pin slides in the shifting channel to The shift switching mechanism shifts the position to switch the speed of movement of the output rod. Both ends of the conversion channel and both ends of the shifting channel are flush in the direction of movement of the operating member.

The motion conversion mechanism includes a driving mechanism and a mode switching mechanism, and the mode switching mechanism includes a switching member and a limiting mechanism that are coupled to each other, and the switching member is movable between two positions, wherein the output is in the first position The lever is in a reciprocating mode, the switching member is disengaged from the driving mechanism and connected to the housing to fix the limiting mechanism and the housing; in the second position, the output rod is in a rotational motion mode The switching member is coupled to the drive mechanism and the restriction mechanism is fixed circumferentially with the output rod. The speed changing mechanism is a planetary gear shifting mechanism, and a center line of the planetary gear shifting mechanism is coaxial with the motor axis and the output rod axis.

The power tool is provided with a mode control mechanism that controls axial movement of the switching member to switch between the first position and the second position. The mode control mechanism includes an operating member disposed on the housing, and the operating member rotates to move the switching member axially. a first holding mechanism for holding the switching member in the first position and the second position, respectively, between the housing and the switching member Second holding mechanism. The first retaining mechanism includes an elastic protrusion and a groove that mates with the elastic protrusion. The power tool is provided with a shift control mechanism for controlling the internal gum to switch between the first position and the second position, the shift control mechanism comprising an operating member disposed on the housing, the operation The rotation of the piece drives the inner tooth to move axially. The operating member is simultaneously coupled to the switching member to control the switching member to switch between the first position and the second position.

Compared with the prior art, the output rod of the power tool of the present invention can output a reciprocating working mode and a two-speed rotating working mode, thereby greatly expanding the range of use of the power tool. More preferably, the three modes of operation of the power tool of the present invention are switched by an operating member, which greatly facilitates the operator who uses the power tool.

The invention also provides a clamping device capable of clamping different working heads, the technical solution is: a clamping device for fixing the first working head or the second working head to the power tool On the output rod, the output rod has an axis, the clamping device includes a mounting member and a clamping mechanism, and the mounting member is connected to the output rod and has a first receiving portion and a second receiving portion having different shapes, a receiving portion for receiving the first connecting portion of the first working head, the second receiving portion for receiving a second connecting portion of the second working head, the clamping mechanism connecting the first connection The portion is held in the first receiving portion or the second connecting portion is held in the second receiving portion.

The first receiving portion includes a first abutting portion and a second abutting portion and a receiving space between the first abutting portion and the second abutting portion. The first abutting portion and the second abutting portion are in the shape of a bayonet, and the abutting surface of the first abutting portion and the second abutting portion are on a plane perpendicular to the axis The projection of the abutting surface is an arc or a broken line.

The second receiving portion is a polygonal or circular receiving hole. The polygon is a regular hexagon or a regular twelve square. The first receiving portion and the second receiving portion partially overlap. The axes of the first receiving portion and the second receiving portion are coincident. The second receiving portion includes a regular polygonal blocking portion, and the first receiving portion includes two joints that are outwardly expanded from the centers of the two opposite edges of the regular polygonal blocking portion, and the openings are oriented toward each other.

The clamping mechanism includes a locking member that moves in a radial direction of the output rod, and a compression that moves the locking member between a first position of the locking working head and a second position of the release working head And a biasing member that presses the pressing member to position the pressing member in the first position. The locking member is a pressing pin, and the pressing pin is provided with a circumferentially extending engaging groove for mating with the working head, and the cross section of the engaging groove is gradually decreased from the opening to the inner width. The pressing member moves in the axial direction of the output rod to press or release the locking member, and the pressing member has an inclined surface inclined with respect to the axial direction of the output rod.

A guiding device is disposed between the pressing member and the mounting member, and the guiding device keeps the pressing member moving along an axial direction of the output rod. The pressing member is a ring sleeved on the mounting member a pressing member, the inclined surface being spaced apart from the guiding device. The biasing member is a compression spring, and the mounting member is connected with a stopping device. One end of the cone compression spring abuts against the pressing member, and the other end abuts the stopping device. The clamping device further includes an operating member coupled to the pressing member and driving the pressing member to move. The outer surface of the operating member is provided with a rib pattern.

Compared with the prior art, the clamping device of the invention can hold two different working heads, which greatly expands the use range of the clamping device, and greatly facilitates the use of the consumer.

DRAWINGS

The invention will now be further described with reference to the accompanying drawings and embodiments.

1 is a perspective view of a power tool according to a first embodiment of the present invention;

Figure 2 is an exploded view of the movement portion of the power tool shown in Figure 1;

Figure 3 is another exploded view of the movement portion of the power tool shown in Figure 1;

Figure 4 is an enlarged view of a portion A of Figure 2;

Figure 5 is a cross-sectional view of the power tool movement portion shown in Figure 1 and a bottom view of the operating member, wherein the output 4 dry output is reciprocated at a high speed;

Figure 6 is a cross-sectional view of the power tool movement portion shown in Figure 1 and a bottom view of the operating member, wherein the output rod outputs a low speed rotary motion;

Figure 7 is a cross-sectional view of the power tool movement portion shown in Figure 1 and a bottom view of the operating member, wherein the output rod outputs a high-speed rotational motion;

Figure 8 is a partial cross-sectional view of a power tool movement portion according to a second embodiment of the present invention; Figure 9 is a schematic view showing the assembly of the power tool and the clamping device and the working head provided by the present invention; Figure 10 is a power tool shown in Figure 9. Left view

Figure 1 is an exploded perspective view of the clamping device shown in Figure 9;

Figure 12 is another perspective exploded view of the clamping device shown in Figure 9;

Figure 13 is a cross-sectional view of the clamping device shown in Figure 10 taken along the line A-A, in which the clamping device is in a free state;

Figure 14 is a cross-sectional view of the clamping device shown in Figure 13 taken along the line B-B;

Figure 15 is a cross-sectional view of the clamping device shown in Figure 13 taken along the line C-C;

Figure 16 is a cross-sectional view of the clamping device shown in Figure 10 taken along the line A-A, in which the clamping device is in a ready-to-clamp state;

Figure 17 is a cross-sectional view of the clamping device shown in Figure 10 taken along the line AA, in which case the clamping device is in a clamped state of clamping the first working head having the first size; Figure 18 is a cross-sectional view of the clamping device shown in Figure 17 in the DD direction;

Figure 19 is a cross-sectional view of the clamping device shown in Figure 10 taken along the line A-A, in which case the clamping device is in a clamped state in which the first working head having the second size is clamped;

Figure 20 is a cross-sectional view of the clamping device shown in Figure 19 taken along the line E-E;

Figure 21 is a cross-sectional view of the clamping device shown in Figure 10 taken along the line A-A, in which case the clamping device is in a clamped state in which the second working head is clamped;

Figure 22 is a cross-sectional view of the clamping device shown in Figure 21 taken along the line F-F;

Figure 23 is a perspective view of a power tool according to a third embodiment of the present invention;

Figure 24 is a front elevational view of the power tool of Figure 23, in which case the support member is in the first position; Figure 25 is another front view of the power tool of Figure 23, in which the support member is in the second position; Figure 26 Is a cross-sectional view of the position maintaining mechanism in the power tool shown in FIG. 23, at which time the locking member is in the locked position;

Figure 27 is a cross-sectional view of the position maintaining mechanism in the power tool shown in Figure 23, in which the locking member is in the release position;

Figure 28 is a front elevational view of a power tool according to a fourth embodiment of the present invention;

Figure 29 is a partial cross-sectional elevational view of the power tool according to a fifth embodiment of the present invention, in which the support member is in the first position, and the locking member of the position maintaining mechanism is in the locked position;

Figure 30 is another partial cross-sectional elevation view of the power tool of Figure 29, in which the support member is in the second position and the locking member of the position maintaining mechanism is in the release position;

Figure 31 is a partial partial cross-sectional elevation view of the power tool of Figure 29, in which the support member is in the second position and the locking member of the position maintaining mechanism is in the locked position;

Figure 32 is a partial cross-sectional elevational view of a power tool according to a sixth embodiment of the present invention, in which case the support member is in the first position;

Figure 33 is another partial cross-sectional elevation view of the power tool of Figure 32, in which case the support member is in the second position;

Figure 34 is a cross-sectional view of the power tool shown in Figure 33 taken along the J-J direction, at which time the locking member of the position maintaining mechanism is in the locked position;

Figure 35 is another cross-sectional view of the power tool of Figure 33 taken along the J-J direction, at which time the locking member of the position maintaining mechanism is in the release position;

36 is a partial cross-sectional front view of a power tool according to a seventh embodiment of the present invention, in which case the support member is in the first position; Figure 37 is a partial cross-sectional elevation view of the power tool of Figure 36, in which case the support member is in the second position;

Figure 38 is a partial cross-sectional elevational view of the power tool of Figure 36, in which case the support member is in another second position;

Figure 39 is a partial cross-sectional view of the power tool shown in Figure 38 taken along the line K-K;

Figure 40 is a partial cross-sectional elevational view of the power tool according to the eighth embodiment of the present invention, in which case the support member is in the first position;

41 and 42 are two partial cross-sectional elevation views of the power tool of Fig. 40 showing the intermediate process of movement of the support member toward the second position;

Figure 43 is still another partial cross-sectional elevation view of the power tool of Figure 40, in which case the support member is in the second position;

Figure 44 is a partial cross-sectional view of the power tool shown in Figure 43 taken along the line M-M.

Specific embodiment

1 to 8 show a power tool 100 of a first embodiment of the present invention.

Referring to Figures 1 and 2, the power tool 100 of the present embodiment includes a housing 2, a motor (not shown) housed in the housing 2, and an output rod 6 driven by a motor through a transmission mechanism. The transmission mechanism includes a motion changing mechanism operative to drive the output rod in a first motion mode of output reciprocating motion and a second motion mode of output rotational motion, thereby greatly improving the application range of the power tool 100.

The motion changing mechanism includes a driving mechanism 10 and a mode switching mechanism. The mode switching mechanism includes a switching member 8 and a limiting mechanism 12 that are coupled to each other. The switching member 8 is movable between two positions. In the first position, the output rod 6 is in the first position. In a motion mode, the switching member 8 is disconnected from the driving mechanism 10 and connected to the housing 2 to fix the limiting mechanism 12 and the housing 2; in the second position, the output rod 6 is in the second motion mode, the switching member 8 and the driving The mechanism 10 is connected and the restriction mechanism 12 is fixed circumferentially with the output rod 6.

The drive mechanism package 10 includes a drive body 9 that is rotated by a motor and a switching mechanism provided between the drive body 9 and the output lever 6, and the switch member 8 is coupled to the drive body 9 at the second position.

The switching mechanism includes a cam groove 14 provided on one of the driving body 9 and the output lever 6, and a pushing member 16 provided on the other of the driving body 9 and the output lever 6. In this embodiment, the cam groove 14 is disposed on the driving body 9. Preferably, the driving body 9 of the embodiment is a hollow cylinder having a hollow receiving cavity, and the cam groove 14 is disposed on the inner surface of the driving body 9. The pushing member 16 is a steel ball, and the output rod 6 is provided with a counterbore 17 for partially accommodating the steel ball. In this way, after the motor drives the driving body 9 to rotate, the output rod 6 reciprocates while rotating by the cooperation of the cam groove 14 and the pushing member 16. Preferably, The driving body 9 is a cylindrical hollow cylinder, and the cam groove 14 is provided on the inner surface of the driving body 9. In this embodiment, the output rod 6 is partially received in the cavity of the driving body 9 and coaxial with the driving body 9. In this way, the structural arrangement of each component is reasonable, and the volume of the power tool can be reduced.

In order to facilitate the processing and manufacturing of the cam groove 14 on the inner surface of the driving body 9, the driving body 9 of the present embodiment includes a first driving member 18, a second driving member 20, and a first driving member 18 and a second driving member 20 are connected thereto. Together with the fixing member 22, a portion of the cam groove 14 is disposed on the first driving member 18, and the other portion is disposed on the second driving member 20. Preferably, the cam groove 14 is divided into two portions along the center line of the channel thereof, and the two portions are respectively disposed on the first driving member 18 and the second driving member 20, that is, the cam grooves 14 are symmetrically distributed on the first driving member 18 and On the second driving member 20. The fixing member 22 of the embodiment is fixed by screwing with the first driving member 18 and the second driving member 20, and the connection is convenient and reliable. The embodiment can also have various modifications, such as setting the cam groove on the outer surface of the output rod, or arranging the cam groove on the outer surface of the driving body to facilitate the processing and manufacturing of the cam groove, and so on, no longer here. It is to be noted that as long as the functions and effects of the present invention are the same or similar to the present invention, they should be covered by the scope of the present invention.

The restricting mechanism 12 is relatively fixed to the output rod 6 in the rotational direction of the output rod 6, i.e., the restricting mechanism 12 and the output rod 6 are circumferentially fixed without relative rotation. Specifically, the restricting mechanism 12 includes a restricting member 26 that is rotatably sleeved on the output rod 6, and a rotation preventing mechanism that is disposed between the restricting member 26 and the output rod 6. The rotation preventing mechanism includes a first longitudinal groove 30 extending on the restricting member 26 in the axial direction of the output rod 6, a second longitudinal groove 32 extending on the output rod 6 in the axial direction thereof, and a first longitudinal direction The long groove 30 and the second longitudinal groove 32 connect the restricting member 26 and the output rod 6 to the connecting member 28 circumferentially. The connecting member 28 is slidably engaged with the first longitudinal groove 30 and the second longitudinal groove 32 in the axial direction of the output rod 6, so that the output rod 6 and the limiting member 26 are circumferentially fixed while the output rod 6 can smoothly reciprocate. .

There are two sets of anti-rotation mechanisms between the limiting mechanism and the output rod. The two sets of anti-rotation mechanisms are symmetrically arranged with respect to the rotation axis of the output rod, and the structure is reliable. Of course, any number of anti-rotation mechanisms can be provided between the limiting mechanism and the output rod. . The connecting member 28 of the present embodiment is preferably a steel ball, and the matching of the steel ball and the longitudinal groove makes the output rod reciprocate smoothly and smoothly. Alternatively, the connecting member 28 may use a cylindrical pin.

The drive mechanism 10 determines the reciprocating stroke of the output rod 6, and the sum of the lengths of the first longitudinal groove 30 and the second longitudinal groove 32 is greater than or equal to the reciprocating stroke of the output rod 6, so that the rotation stop mechanism does not limit the reciprocation of the output rod 6. The movement makes the output rod 6 move smoothly. In this embodiment, the sum of the lengths of the first longitudinal groove 30 and the second longitudinal groove 32 allows the output rod 6 to move smoothly, so that only the second second elongated groove 32 is required to be provided on the output rod 6. The output rod 6 moves smoothly, so that the strength of the output rod 6 can be ensured. Alternatively, the connecting member is fixedly connected to the limiting member, and only the longitudinal slot that is matched with the connecting member may be disposed on the output rod.

The second driving member 20 is sleeved on the limiting member 26, and the first longitudinal slot 30 on the limiting member 26 is penetrated toward one end of the second driving member 20. The second driving member 20 abuts the limiting member 26 to serve as the first Longitudinal slot Alternatively, the first longitudinal groove 30 of the restricting member 26 may be closed at both ends.

In the present embodiment, a rotation preventing mechanism that fixes both of them circumferentially is provided between the restricting member 26 and the output rod 6. Alternatively, the limiting mechanism and the output rod 6 are profiled to be circumferentially fixed, such as the portion where the limiting member is mated with the output rod is arranged in a regular polygon, without the need to provide an additional rotation preventing mechanism between the two, The restricting mechanism and the output rod 6 are circumferentially fixed and the output rod 6 is axially reciprocable.

The switching member 8 is splined to the restriction mechanism 12. Specifically, the switching member 8 is provided with a first spline 34, and the restriction mechanism 12 is provided with a second spline 36 engageable with the first spline 34. Preferably, the switching member 8 is sleeved on the restriction member 26 of the restriction mechanism 12, the first spline 34 is disposed on the inner surface of the switching member 8, and the second spline 36 is disposed on the outer surface of the restriction member 26. When the first spline 34 and the second spline 36 are engaged, the switching member 8 is coupled to the restriction mechanism 12, particularly in the circumferential direction. More preferably, the first spline 34 and the second spline 36 are circumferentially disposed along the rotation direction of the output rod 6, and the circumferentially disposed first spline 34 and the second spline 36 are mated to connect the switching member 8 and the restriction. The member 26 is stably connected. Alternatively, the first spline 34 and the second spline 36 are disposed at an angle in the circumferential direction so that the two are sufficiently mated.

The switching member 8 is splined to the driving body 9. Specifically, the driving body 9 is provided with a third spline 38 that engages with the first spline 34. Preferably, the switching member 8 can be sleeved on the second driving member 20 of the driving body 9, and the third spline 38 is disposed. On the outer surface of the second drive member 20, when the first spline 34 and the third spline 38 are engaged, the switching member 8 is connected to the drive body 9, in particular in a circumferentially fixed connection. More preferably, the first spline 34 and the third spline 38 are circumferentially disposed along the rotation direction of the output rod 6, and the circumferentially disposed first spline 34 and the third spline 38 are mated to switch the connector 8 and the first The two driving members 20 are stably connected. Alternatively, the first splines 34 and the third splines 38 are disposed at an angle in the circumferential direction to make the two sufficiently mated.

Referring to FIG. 5, the restricting mechanism 12 and the driving body 9 have flush splines, that is, the second splines 36 and the second splines 38 are flush, and the switching member 8 slides along the axial direction of the output rod 6 to be at the first Switching between the position and the second position, when the switching member 8 is in the first position, the first spline 34 and the second spline 36 are engaged; Referring to FIG. 6, when the switching member 8 is in the second position, the first spline 34 is simultaneously Engagement with the second spline 36 and the third spline 38. In the present embodiment, the length of the second spline 36 along the axial direction of the output rod 6 is greater than the length of the third spline 38 along the axial direction of the output rod 6, thereby facilitating switching of the switching member 8 between the two positions.

The restriction mechanism 12 and the drive body 9 are provided with oblique angles at the ends of the splines facing one side, and the ends of the splines of the switching member 8 are provided with oblique angles. Specifically, in conjunction with FIGS. 2 and 4, the second spline 36 and the third spline 38 are provided with beveled ends toward the spline ends of one side of each other, and the ends of the first splines 34 are provided with oblique angles, FIG. 4 An enlarged schematic view of the spline bevel 39 of the third spline 38 is exemplarily shown. The bevel angle of the first spline 34 and the second spline 36 is the same as the bevel angle and size of the third spline 38. It is provided that the switching member 8 can smoothly mesh with the second spline 36 and the third spline 38 during the axial slip.

1 to 3, as previously described, the switching member 8 will limit the mechanism 12 and the housing 2 in the first position. The connection is made to limit the rotation of the output rod 6 to cause the output rod 6 to output a reciprocating motion. Specifically, the housing 2 is provided with a positioning member 40. The positioning member 40 is fixed to the housing 2 at least in the rotation direction of the output rod 6. The positioning member 40 of the embodiment preferably rotates with the housing 2 at the output rod 6. Both the direction and the axial direction are relatively fixed. A matching mechanism is disposed between the switching member 8 and the positioning member 40. When the switching member 8 is in the first position, the matching mechanism connects the switching member 8 with the position member 40 to connect the restriction mechanism 12 with the housing 2, and the switching member When the second position is 8, the switching member 8 is disengaged from the positioning member 40.

The mating mechanism includes a protrusion 42 disposed on one of the switching member 8 and the positioning member 40, and a card slot 44 disposed on the other of the switching member 8 and the positioning member 40. When the switching member 8 is in the first position, The protrusion 42 is engaged with the card slot 44. When the switching member 8 is in the second position, the protrusion 42 is disengaged from the card slot 44. In this embodiment, the protrusion 42 is disposed on the switching member 8, and the card slot 44 is disposed on the positioning member 40. Preferably, the mating mechanism of the embodiment includes a plurality of pairs of mutually mating protrusions 42 and a card slot 44, and the plurality of pairs of protrusions 42 and the card slots 44 are symmetrically distributed with respect to the rotation axis XX of the output rod, thereby causing the switching member 8 A reliable and stable connection to the positioning member 40 in the first position. More preferably, the even pairs of the mating protrusions 42 and the card slots 44 are provided. The even pairs of the protrusions 42 and the card slots 44 are divided into groups of different sizes, and the two pairs of protrusions 42 and the card slots 44 are located in a straight line. For a group, such a setting, only the matching protrusions and the card slots can be matched together, thereby ensuring that the output rod 6 can only output the reciprocating motion at a certain position, and the saw blade works normally because the output rod output reciprocates. It is more in line with the general operator's operating habit to make the output rod 6 output the reciprocating motion only at certain positions. The output rod 6 is rotated about its center line, and therefore, the rotation axis X-X is the center line of the output rod 6.

The embodiment can also have various modifications, such as disposing a protrusion on the positioning member and disposing the card slot on the switching member; setting a plurality of pairs of protrusions and a card slot, each pair of protrusions and the card slot are the same size so as not to Limit the position of the output rod; only a pair of protrusions and slots are provided to connect the switching member to the positioning member.

When the switching member 8 is in the first position, the housing 2 and the switching member 8 are magnetically connected, so that the switching member 8 can be more stably connected to the housing 2 in the first position. Specifically, the positioning member 40 is provided with a magnet 46, and the switching member 8 is made of metal which can be attracted by the magnet 46. Preferably, the positioning member 40 is provided with a plurality of receiving holes 48 uniformly distributed circumferentially around the rotation axis XX of the output rod 6. The plurality of magnets 46 are respectively received in the plurality of receiving holes 48, so that the switching member 8 can be more reliable. Connected to the housing 2.

The embodiment can also have various modifications, such as no overlapping protrusions and card slot connections between the switching member and the positioning member, but only through magnetic connection; no additional magnet is disposed on the positioning member, The positioning member and the switching member are themselves magnetic and can be attracted to each other.

Referring to Figures 1, 2 and 5, the power tool is provided with a mode control mechanism 50 that controls the axial movement of the switching member 8 to switch the switching member 8 between the first position and the second position. Preferably, the mode control mechanism 50 includes an operating member 52 disposed on the housing 2, and the operating member 52 rotates to move the switching member 8 axially. The motion thus switches between the first position and the second position. Specifically, a conversion channel 53 and a first cylindrical pin 58 slidable in the conversion channel 53 are disposed between the operating member 52 and the switching member 8. The conversion channel 53 includes a circumferential extension extending relative to the output rod 6. The first groove 56 of the output shaft 6 is disposed at an inclined axis XX. 5 and 6, when the operating member 52 is rotated, the first cylindrical pin 58 slides within the first channel 56, and the first cylindrical pin 56 is inclined with respect to the rotational axis XX of the output rod 6, the first cylindrical pin When sliding in the first channel 56, the displacement generated in the axial direction of the output shaft 6 causes the switching member 8 to be displaced in the axial direction of the output rod 8, thereby causing the switching member 8 to be in the first position and the second position. Switch between.

Referring to Figures 5 and 6, the axial width of the first channel 56 along the output rod 6 is greater than the diameter of the first pin-shaped post 58 to facilitate switching of the switching member 8 from the second position to the first position. Specifically, referring to FIG. 2, when the switching member 8 is switched from the second position toward the first position, there is a case where the protrusion 42 does not just snap into the card slot 44. At this time, the switching member 8 remains with the spline. The limiting member 26 is connected to the driving body 9, and the output rod 6 is rotatable. The output rod 6 rotates through the limiting member 26 to drive the switching member 8 and the driving body 9 to rotate, so that the protrusion 42 rotates and smoothly engages under the attraction of the magnet 46. The card slot 44, the final switching member 8 is smoothly switched to the first position, and the axial width of the first channel 56 is larger than the diameter of the first cylindrical pin 58 to allow the switching member 8 to be switched from the second position to the first position. Space, convenient conversion of the switching member 8.

Referring to FIG. 3 and FIG. 5, in order to facilitate the connection of the switching member 8 to the operating member 52, the first connecting rod 54 is fastened to the switching member 8, and the first channel 56 is disposed on the operating member 52, and the first cylindrical pin 58 is disposed. On the first link 54. In order to ensure the reliable connection of the first link 54 and the switching member 8, the switching member 8 of the embodiment is provided with an annular groove 60, and the end of the first link 54 facing away from the cylindrical pin 58 is provided with a semicircular cassette 62. The cassette 62 is snapped into the annular groove 60 to connect the first link 54 and the switching member 8.

The embodiment can also have various modifications, such as disposing a cylindrical pin on the operating member, and disposing the first channel on the first connecting rod; the operating member is fixedly connected with the switching member so that the operating member is along the axial direction of the output rod The slip-driven switching member switches between the first position and the second position.

The process of mode conversion of the power tool 100 is described below.

Figure 5 shows the first state in which the switching member 8 is in the first position such that the output rod 6 is in the output reciprocating motion. 3 and 5, the motor drives the output rod 6 to reciprocate while rotating by the driving mechanism 10. The positioning member 40 is fixed relative to the housing at least in the rotation direction of the output rod 6, and the first cylindrical pin 58 is fixed. Located at one end of the first channel 56, the switching member 8 is at the first position. At this time, the switching member 8 is connected to the positioning member 40 by the engagement of the protrusion 42 and the card slot 44 and the attraction of the magnet 46. Together, on the other hand, the restricting member 26 is coupled by the engagement of the first spline 34 and the second spline 36, whereby the restricting member 26 is coupled to the housing 2 via the switching member 8 so that the restricting member 26 cannot be rotated, and the output The rod 6 is fixed circumferentially with the restricting member 26 so that the output rod 6 is also unable to rotate, and the output rod 6 outputs a reciprocating motion. The operator rotates the operating member 52 to slide the first cylindrical pin 58 from one end to the other along the inclined first channel 56. The first cylindrical pin 58 is displaced along the axial direction of the output rod 6, thereby driving the switching. The piece 8 is displaced along the axial direction of the output rod 6, and the switching member is gradually switched from the first position shown in FIG. 5 to the second position shown in FIG. 6, at which time the switching member 8 and the positioning member 40 are disengaged and the switching member 8 is removed. The first spline 34 simultaneously engages with the second spline 36 of the restricting member 26 and the third spline 38 of the driving body 9, so that the switching member 8 integrally connects the restricting member 26 and the driving body 9, and at the same time, due to the output rod 6 and the restricting member 26 are circumferentially fixed, whereby the output rod 6 and the driving body 9 are integrally coupled to the driving body 9, and the output rod 6 outputs a rotational motion.

The operation method of the power tool 100 for switching from the rotary mode to the reciprocating mode is similar, and the only difference is the direction of rotation of the operating member 52, which will not be described herein.

3 and 6, a first holding mechanism and a second holding mechanism for holding the switching members 8 in the first position and the second position, respectively, are provided between the housing and the switching member 8. Preferably, the first holding mechanism and the second holding mechanism are disposed between the housing and the operating member 52 to maintain the operating member 52 in the first position and the second position, thereby maintaining the switching member 8 in the first position and the second position. .

The first holding mechanism includes an elastic protrusion 64 provided on one of the housing 2 and the operating member 52, and a groove provided on the other of the housing 2 and the operating member 52 to be engaged with the elastic protrusion 64 66. Preferably, the structure of the second holding mechanism is the same as that of the first holding mechanism, and includes elastic protrusions provided on one of the housing 2 and the operating member 52, and is disposed in both the housing 2 and the operating member 52. The other groove that is mated with the elastic protrusion. More preferably, the operating member 52 is provided with an elastic protrusion 64, and the housing 2 is provided with two recesses 66 (only one is shown). When the elastic protrusion 64 is mated with the first recess, the operating member 52 is maintained. In the first position, thereby maintaining the switching member 8 in the first position; when the resilient projection 64 is mated with the second recess, the operating member 52 is maintained in the second position, thereby maintaining the switching member 8 in the second position.

The elastic protrusion 64 includes a spring 68 fixedly coupled to the operating member 52 and a hollow boss 70 sleeved on the spring 68. The end of the boss 70 is hemispherical to facilitate snapping or disengaging the groove; the groove 66 is disposed and the housing The fixedly connected ring members 72 are disposed around the circumference of the ring member 72.

3, 5 and 6, the transmission mechanism further includes a speed changing mechanism disposed between the motor and the motion converting mechanism, the speed changing mechanism including a speed reducing mechanism and a shifting switching mechanism. In the present embodiment, the speed reduction mechanism is a planetary gear reduction mechanism including a first planetary gear train 74 and a second planetary gear train 76 that are sequentially connected. In this embodiment, the driving body 9 is coaxial with the motor output shaft, and the output rod 6 is coaxial with the driving body 9. The final output rod 6 is coaxial with the motor output shaft, and the whole machine is arranged reasonably, which can minimize the power. The volume of the tool 100.

The shifting switching mechanism is the internal spur 78 of the second planetary gear train 76, and the internal spur 78 is along the axis of the output rod 6. The direction can be moved between two positions, as shown in FIG. 5, in the first position, the internal gum 78 is disengaged from the housing 2, the second planetary gear train 76 is inactive, and the drive body 9 is higher in the first position. Rotational speed; as shown in FIG. 6, in the second position, the internal spur 78 meshes with the housing 2, and the second planetary gear 76 further decelerates the rotation of the output of the first planetary gear train 74, and the drive body 9 The lower second rotation speed is rotated; in this embodiment, the inner spur 78 and the housing 2 are mated with the slot by the protrusion or by the circumferential spline, and will not be described herein.

The power tool 100 is provided with a shift control mechanism 80 for controlling the internal gum 78 to switch between the first position and the second position. The shift control mechanism 80 includes an operating member disposed on the housing 2, and the operating member rotates to drive the internal gums. 78 axial movement. Preferably, the operating member of the shift control mechanism 80 and the operating member 52 of the mode control mechanism 50 are the same component, that is, the operating member 52 is simultaneously connected to the switching member 8 and the internal gum 78, thereby simultaneously controlling the switching member 8 and The position of the internal spur 78, which in turn controls the mode switching and shifting of the power tool 100, is convenient to operate. Of course, two operating members are provided on the casing to control the positions of the switching members and the internal spurs, thereby controlling the mode switching and shifting of the power tool, respectively.

Specifically, a shifting groove 81 and a second cylindrical pin 84 slidable in the shifting groove 8 1 are provided between the operating member 52 and the internal spur 78, and the shifting groove 8 1 includes the circumferential direction of the output rod 6. A second channel 82 extending and arranged obliquely with respect to the axis of rotation XX of the output rod 6. 5 and 6, when the operating member 52 rotates, the second cylindrical pin 84 slides in the second channel 82, and the second cylindrical pin 82 is inclined with respect to the rotational axis XX of the output rod 6, the second cylindrical pin When sliding in the inclined second channel 82, displacement will occur along the axial direction of the output rod 6, thereby causing the internal spur 78 to be displaced in the axial direction of the output rod 6 so that the internal spur 78 is in the first position and Switch between the two positions.

The second channel 82 is disposed on the operating member 2, and the inner tooth cymbal 78 is connected to the operating member 52, and the inner connecting rod 78 is connected with the second connecting rod 86, the second column. The pin 84 is provided on the second link 86. The manner in which the second link 86 and the inner ring 78 are coupled is the same as that of the first link 54 and the switch member 8, and details are not described herein.

5 and FIG. 6, whereby the positions of the second cylindrical pins 84 at the two ends of the second channel 82 correspond to the two extreme positions of the movement of the internal gum 78, so that the driving body 9 corresponds to the first rotational speed. Or the second rotational speed is rotated; and the first cylindrical pin 58 is at the two end positions of the first channel 56 corresponding to the two extreme positions of the movement of the switching member 8, thereby causing the output rod 6 to output a rotation or reciprocating motion. Preferably, in the circumferential direction 6 of the output rod, the longest distance the second cylindrical pin 84 moves in the second channel 82 and the longest distance the first cylindrical pin 58 moves in the first channel 56 in the circumferential direction 6 of the output rod In the same way, when the rotation of the operating member 52 causes the internal spur 78 to move in the axial direction of the output rod 6 to shift, the axial movement of the switching member 8 along the output rod 6 is also simultaneously in place to switch the mode, the operating cylinder Single convenient.

Referring to Figures 5, 6, and 7, the conversion channel 53 further includes a third channel in communication with the first channel 56. 88, the third channel 88 extends in the circumferential direction of the output rod 6 and is perpendicular to the rotation axis XX of the output rod 6, and the shift channel 81 further includes a fourth channel 90 communicating with the second channel 82, the fourth channel 90 extends in the circumferential direction of the output rod 6 and is inclined with respect to the rotation axis XX of the output rod 6, and the first cylindrical pin 58 and the second cylindrical pin 84 move simultaneously in the first channel 56 and the second channel 82, respectively. The moving distance in the circumferential direction of the output rod 6 is the same; the first cylindrical pin 58 and the second cylindrical pin 84 move simultaneously in the third groove 88 and the fourth groove 90, respectively, and have the same moving distance in the circumferential direction of the output rod. . The first cylindrical pin 58 slides in a third groove 88 extending in the circumferential direction of the output rod 6 and perpendicular to the rotation axis XX of the output rod 6, and the switching member 8 is not displaced in the axial direction of the output rod, thereby switching The member 8 is held in one of the first position and the second position and the output rod 6 maintains the output rotation or reciprocation; and the second cylindrical pin 84 extends in the circumferential direction of the output rod 6 and opposite the axis of rotation of the output rod 6. The fourth groove 90 of the XX tilting is slid, and the internal spur 78 is displaced along the axial direction of the output rod 6, so that the internal spurs 78 rotate the driving body 9 at different first and second rotational speeds, respectively. The power tool 100 of the present embodiment has two modes of high speed and low speed when the output rod 6 outputs rotation or reciprocating motion, which is convenient for the operator to select.

The third channel 88 extends at one end of the first channel 58 corresponding to the second position of the switching member 8, whereby the power tool 100 of the present embodiment has two modes of high speed and low speed for outputting the output rod 6 when outputting the rotary motion. The choice is more in line with the needs of the operator.

The ends of the fourth channel 90 and the second channel 82 away from each other are located on the same line in the circumferential direction of the output rod 6. Therefore, the output rod of the power tool 100 of the present embodiment has three working states of high speed reciprocating, low speed rotation, and high speed rotation, which is more in line with the operator's use requirements.

In the high-speed reciprocating state shown in FIG. 5, the first cylindrical pin 58 is located at the end of the first channel 56 away from the third channel 58, and the switching member 8 is located at a first position that engages with the positioning member 40 on the housing 2. The output rod 6 outputs a reciprocating motion; at the same time, the second cylindrical pin 84 is located at the end of the second channel 82 away from the fourth channel 90, and the internal spur 78 is in a first position disengaged from the housing, the driving body 9 At high speed, the final output rod 6 outputs high speed reciprocating motion.

Subsequently, the operating member 52 rotates, the first cylindrical pin 58 slides along the inclined first channel 56, and the second cylindrical pin 84 slides along the inclined second channel 82, gradually shifting to a low speed rotation as shown in FIG. State, at this time, the first cylindrical pin 58 is located at the end of the first channel 56 near the third channel 88, and the axial movement of the switching member 8 is switched from the first position to the second position to be disengaged from the positioning member 40 on the housing. The output rod 6 outputs a rotational motion, at the same time, the second cylindrical pin 84 moves to the end of the second channel 82 near the fourth channel 90, and the internal spur 78 moves axially to the second engagement with the housing 2. At the position, the driving body 9 rotates at a low speed, and finally the output rod 6 outputs a low-speed rotational motion.

Then, the operating member 52 continues to rotate, and the first cylindrical pin 58 slides in the third groove 88 perpendicular to the rotation axis of the output rod 6, the position of the switching member 8 does not change, and the output rod 6 keeps rotating, at the same time, The second cylindrical pin 84 slides along the inclined fourth channel 90 to drive the internal spur 78 to move axially, and gradually shifts to a high-speed rotational motion as shown in FIG. 7, at which time, the first cylindrical pin 58 is located in the third slot. The track 88 is away from the end of the first channel 56, the switching member 8 is maintained in the second position without axial movement, the output rod 6 remains in the rotated state, and at the same time, the second cylindrical pin 84 is located in the fourth channel 90. Far from the end of the second channel 82, the ends of the fourth channel 90 and the second channel 82 away from each other are on the same line in the circumferential direction of the output rod 6, and the internal gum 78 is switched to disengage from the housing. In the first position, the driving body 9 rotates at a high speed, and finally the output rod 6 outputs a high-speed rotational motion.

As described above, the elastic projections 64 provided on the operating member 52 are respectively engaged with the two recesses 66 provided in the ring member 72 of the housing 2, so that the switching members 8 are respectively held in the first position and the second position, thereby The output rod 6 is maintained in a rotating or reciprocating working state. In this embodiment, the output rod 6 has three states of high speed reciprocating, low speed rotation and high speed rotation. Correspondingly, three grooves 66 can be disposed on the ring member 72, and the elastic protrusions 64 on the operating member 52 are respectively matched with the three grooves. In response, the output rods 6 are respectively held in one of the above three states, and Fig. 6 shows a state in which the elastic projections 64 are engaged with one of the grooves 66 to keep the output rods rotated at a low speed.

In this embodiment, the output rods can have various working states by changing the settings of the channels. If only the first channel and the second channel are provided, the output rod has only two states of high-speed rotation (or reciprocating) and low-speed reciprocating (or rotating); for example, the third channel corresponds to the switching member in the first channel. One end of the first position extends so that the output rod input has two states of high speed and low speed when reciprocating.

In the circumferential direction of the output rod 6, the transition groove 53 and the end of the shifting groove 8 1 are flush, so that only the smaller operating member 52 can simultaneously provide the switching groove 53 and the shifting groove 81, so that the power tool 100 compact. Of course, the same function can be achieved by staggering the ends of the transfer channel 53 and the shifting channel 8 1 .

Returning to Fig. 1, the power tool 100 further includes a handle 7 connected to the housing 2, and the handle 7 is provided with a switch 3 for controlling the motor. The power tool 100 of the present embodiment is held by both hands of the operator, and the switch 3 and the operating member 52 are separately controlled by both hands. Thereby, the power tool 100 can be firmly held to output the output rod 6 in a stable working state, and the switch 3 and the operating member 52 are controlled by different hands, and the switch 3 and the operating member 52 can be reliably controlled.

Specifically, the handle 7 is provided with a first holding area 99, and the second holding area 97 is disposed on the housing 2. The first holding area 99 and the second holding area 97 are spaced apart, and the switch 3 is disposed at the first position. On the holding area 99, the operating member 52 is disposed on the second holding area 97, so that the operator can hold one hand on the first holding area 99 and hold the handle and control the switch 3, and the other hand is placed Holding the housing 2 on the second holding area 97 and controlling the operating member 52 is reliable and convenient.

The first grip area 99 is at least partially disposed on the handle 7, and the second grip area 97 is disposed on the housing 2. Thereby, the operator's two hands grip the handle 7 and the housing 2, respectively, so that the power tool 100 is firmly gripped. Holding, and thus the output rod 6 can output a stable working state. In this embodiment, the angle between the handle 7 and the casing 2 is an angle between straight lines extending in both directions.

The first grip area 99 is disposed at the junction of the handle 7 and the housing 2. The second holding area 97 is disposed at one end of the housing away from the handle. The output rod 6 projects from the end portion 91 of the housing 2 away from the handle 7. Thus, one hand of the operator holds the handle near one end of the housing, the hand can hold the handle 7 and take care of the housing 2 to provide basic support for the power tool 100; and the other is held in the housing 2 Close to one end of the output rod 6 provides auxiliary support for the output rod 6, which ensures that the output rod 6 outputs a stable working state.

The first holding area 99 includes a first grip 98 for gripping the tiger's mouth of the operator's hand, and the second gripping area 97 includes a second grip for the operator's hand to pass through the housing. The plane of the central axis of 2 is bounded. In this embodiment, the housing 2 is divided into two opposite sides by the central axis of the housing 2 and perpendicular to the plane of the paper of FIG. 1, the first grip 95 And the second grip are located on different sides of the housing, respectively. With the power tool position shown in Fig. 1 determined as the "up" and "down" positions, the first grip portion 98 and the second grip portion are placed one above the other. Thus the operator's two hands hold the power tool 100 on opposite sides to provide balanced support for the power tool 100.

The switch 3 is disposed at a position opposite to the first grip portion 98. The switch 3 is disposed on the first holding area 99 on the side of the relatively small angle between the handle 7 and the housing 2. The switch 3 is provided with a wavy grip 5 which guides the user to place a finger thereon and controls the switch 3. Thus, when the operator controls the switch 3, the tiger's mouth is aligned with the first grip portion 98 to hold the handle 7 and the finger is placed on the grip portion 5 to control the switch 3.

With the plane passing through the central axis of the casing 2 bounded, the casing 2 is divided into opposite sides by the central axis of the casing 2 and perpendicular to the plane of the paper of Fig. 1, the operating member 52 and the The two grips are respectively located on different sides of the housing, that is, the operating member 52 is disposed at a position opposite to the second grip. When the position of the power tool shown in Fig. 1 is determined as the "up" and "down" positions, the operating member 52 is disposed one above the second holding portion. Specifically, the operating member 52 is disposed on the second holding area 97 on the side of the relatively large angle between the handle 7 and the housing 2. The second grip portion of the second holding portion 97 is provided with a grip guiding portion 89. The grip guiding portion 89 includes a recessed portion 85 and a convex portion 87 which are spaced apart in the circumferential direction of the housing 2, and the outer surface of the convex portion 87 is recessed with respect to the other outer surface portion of the housing 2. The grip guide portion 89 guides the operator to align the tiger's mouth of the hand with the second grip portion and holds the housing 2 in the circumferential direction of the housing 2 and controls the operating member 52 with a finger.

This paragraph describes the tube, and the position of the power tool shown in Fig. 1 indicates the "up" and "down" relationships. When the power tool 100 of the embodiment is operated, the operator's hand holds the handle 7 at the first grip portion 98 with the tiger's mouth facing down and the finger end is placed on the switch 3 to control the switch 3, and the other hand is in the mouth. The grip portion 89 of the second grip portion holds the housing 2 upward and the end of the finger is placed on the operating member 52 to control the operating member 52. It should be noted that the two hands respectively controlling the switch 3 and the control member 52 described in this embodiment do not mean that the two hands simultaneously activate the switch 3 and the movement control member 52. In fact, when the power tool 100 is operated, usually Firstly, the position of the control member 52 is adjusted to determine the working state of the power tool 100, and then the switch 3 is activated to operate the power tool 100. During the operation of the power tool 100, the control member 52 is usually not moved to switch the work of the power tool 100. Status to ensure safety.

Thus, when the power tool 100 of the present embodiment is operated, the operator's two hands hold the power tool 100; and the tiger's mouth of both hands are respectively aligned with the opposite sides of the power tool (one in FIG. 1). The power tool 100 is used to achieve a balanced grip effect, and the two hands respectively control the switch 2 and the operating member 52 to ensure effective control of the switch 2 and the operating member 52.

The handle 7 and the housing 2 are disposed at an obtuse angle to be ergonomic and convenient for the operator to hold. A reasonable angle can be set according to actual needs. In addition to the obtuse angle, the handle 7 and the housing 2 can be disposed at right angles.

Fig. 8 shows a power tool 200 of a second embodiment of the present invention.

Components similar to the power tool 200 and the power tool 100 are given the same reference numerals. Figure 8 integrates two positions of the switching member 8, in the upper half of the axis of rotation X-X, the switching member 8 is in the second position; in the lower half of the axis of rotation X-X, the switching member 8 is in the first position.

The main difference between the power tool 200 and the power tool 100 of the first embodiment is that the positioning member 40 of the embodiment is relatively fixed to the housing 2 in the circumferential direction of the output rod 2, but the positioning member 40 is axially movable relative to the housing 2. A spring 92 is disposed between the positioning member 40 and the housing 2. When the switching member 8 is switched from the second position to the first position, when the protrusion 42 is not mated with the slot 44, the spring 92 is compressed, and the output rod 6 is output. Rotation through the restriction member 26 causes the switching member 8 to rotate, so that the projection 42 rotates until it is aligned with the card slot 44, and the spring 92 forces the projection 42 and the card slot 44 to smoothly align. In this embodiment, the protrusions are engaged with the card slots, and those skilled in the art can conceive that the pins can be matched with the card holes. No longer.

Preferably, in the first position, when the switching member 8 is in the first position, the spring 92 is in a free state, and the positioning member 40 is not forced to move toward the switching member 8, so that the spring 92 does not push the switching member 8 to move toward the second position, thereby avoiding Misoperation. Of course, when the switching member 8 is in the first position, the spring 92 can also be in a compressed state. To avoid erroneous operation, the housing 2 is provided with a mechanism for limiting the axial displacement of the positioning member 40.

The housing 2 of the embodiment is provided with a positioning pin (not shown) extending along the axial direction of the output rod 6. The positioning member 40 is provided with a hole for mating with the positioning pin, so that the positioning member 40 is The housing 2 is circumferentially fixed but axially movable relative to the structure of the cartridge.

Figures 9 through 22 illustrate a clamping device 401 suitable for use with the power tool of the present invention.

The following description takes the power tool 100 as an example. In fact, the clamping device 401 can be applied to the power tool provided by the various embodiments of the present invention.

The output rod 6 of the power tool 100 does not itself process the workpiece. After being connected to the working head 308, the working head 308 is moved in synchronization with it to machine the workpiece. When the power tool 100 is working, it is necessary to change the working head frequently. To facilitate the connection between the working head 308 and the output rod 6, the output rod 6 is connected with a clamping device. At 401, the working head 308 is fixed to the output rod 6 by the clamping device 401 and moves in synchronization with the output rod 6. Corresponding to the output mode of the output rod 6, the working head 308 of the embodiment includes a first working head 309 and a second working head 310. The first working head 308 and the second working head 310 are connected to the clamping device 401. The shape of the connecting portion is different.

Specifically, the first working head 309 includes a first connecting portion 311 connected to the clamping device 401 and a first working portion 312 for reciprocally moving the workpiece. The first connecting portion 311 and the first working portion 312 may be integrally formed, or may be separately formed and then fixedly connected, such as welded together. Preferably, the first working head 309 is a standard jig saw blade, and the first connecting portion 311 includes a sheet-like body 313 and two lugs 314 protruding outward from the sheet-like body 313; the first working portion 312 Longitudinal column serrations 315 are provided to cut the workpiece. It will be appreciated by those skilled in the art that the workpiece can also be sanded by providing abrasive particles in the first working portion 312.

The second working head 310 includes a second connecting portion 316 connected to the clamping device 401 and a second working portion 317 for rotationally moving the workpiece. The second connecting portion 316 and the second working portion 317 may be integrally formed, or may be separately formed and then fixedly connected, such as welded together. Preferably, the second working head 310 is a standard hexagonal drill or a hexagonal bit. The second connecting portion 316 has a hexagonal column shape and is provided with a circumferentially extending curved groove 318. The second working portion 317 Set up a cross batch, one-word batch for drilling or screwing the workpiece.

The clamping device 401 of the embodiment can hold two different working heads, which greatly expands the use range of the clamping device, and greatly facilitates the use of the consumer. In particular, after the clamping device 401 is coupled to the output rod 6 of the power tool 100, the power tool 100 drives the first working head 309 clamped on the clamping device 401 to reciprocate the workpiece; or the driving clamp is clamped to the clamping device. The second working head 310 on the 401 rotates and moves the workpiece, thereby requiring only one power tool 100 and one clamping device 401 to cooperate with different working heads, thereby realizing the functions of the reciprocating tool and the rotating tool. Great convenience for the use of consumers.

The clamping device 401 can also be coupled to an output rod of a power tool that can only output a motion mode, such as an output shaft of a reciprocating saw or an electric drill, where the clamping device is typically only used to hold a working head.

The clamping device 401 includes a mounting member 402 and a clamping mechanism 406.

Mounting member 402 is coupled to output rod 6. In this embodiment, the mounting member 402 has a rod shape, preferably a cylindrical rod shape. In this embodiment, the mounting member 402 is fixedly coupled to the output rod 6, and preferably the mounting member 402 is welded to the output rod 6. Of course, the mounting member 402 is of any other shape and is fixedly coupled to the output rod 6 by any other means, such as by a connecting pin, or integrally formed.

Referring to Figures 10 and 11, the mounting member 402 is provided with a receiving portion 408 for receiving a connecting portion of the working head. The accommodating portion 408 includes a first accommodating portion 410 and a second accommodating portion 412 having different shapes. Combination diagram The first receiving portion 410 is configured to receive the first connecting portion 3 1 1 of the first working head 309, and the second receiving portion 412 is configured to receive the second connecting portion 3 16 of the second working head 3 10 .

The first receiving portion 410 includes a first abutting portion 414 and a second abutting portion 420 and a receiving space 416 between the first abutting portion 414 and the second abutting portion 420. In order to better snap the first connecting portion, the first abutting portion 414 and the second abutting portion 420 extend a length along the axial length of the output rod 6. In this embodiment, the two abutting portions are in the shape of a bayonet, and each abutting portion has an abutting surface 418 for abutting the first connecting portion 3 1 1 , and the two abutting surfaces 418 cooperate to connect the first connecting portion. A reliable card is attached to it. More preferably, on a plane perpendicular to the axis X of the output rod 6 (i.e., on the paper surface on which Fig. 10 is located), the projection of the abutment surface 418 is an arc or a fold line, so as to be set regardless of the thickness of the first joint portion. The abutting portion can reliably clamp the first connecting portion therein.

The housing 2 of the power tool 100 includes two half shells that are butted, and on the plane perpendicular to the axis of the output rod 6 (i.e., the paper surface on which Fig. 10 is located), the center line L of the first housing portion 410 is located in two halves. The pair of wires on the plane formed by the wires 4. Alternatively, the projection of the two abutments is transverse to the projection of the mating wires 4 of the two half-shells. The first receiving portion 410 can accommodate the first working head at a specific angle with respect to the housing 2, thereby allowing the first working head to machine the workpiece at a specific angle with respect to the housing, facilitating the use of the operator.

There may be other modifications in this embodiment. For example, providing an abutting portion having a plane abutting surface parallel to the axis X of the output rod may also sandwich the first connecting portion of the first working head between the two abutting portions. Or any other shape of the abutting portion that can sandwich the first connecting portion therebetween.

Please continue with FIG. 10 and FIG. 1 1 , the second receiving portion 412 is a polygonal receiving hole. The polygonal receiving hole includes a polygonal blocking portion and a space surrounding the polygonal blocking portion. In order to better engage the second connecting portion 3 16 , the second receiving portion 412 extends a distance along the axial length of the output rod 6 from the free end 403 of the mounting member 402 away from the output rod 6 . In this embodiment, the second receiving portion 412 is a regular polygonal receiving hole. More preferably, the second receiving portion 412 is a regular hexagonal or regular twelve-square receiving hole. Since the connection between the conventional standard drill bit and the bit is mostly hexagonal or twelve-sided, the embodiment is a square or a positive ten. The square second receiving hole matches the standard drill bit and the bit. This is set up, eliminating the need to design an additional second working head and saving costs. Of course, those skilled in the art can design a receiving hole of any shape, such as a circular receiving hole, etc., which matches the shape of the connecting portion of the second working head as needed.

Referring to FIG. 10, in this embodiment, the first receiving portion 410 and the second receiving portion 412 partially overlap. Thereby, the volume of the mounting member 402 can be greatly reduced, thereby reducing the volume of the entire clamping device 401, facilitating the operation of the clamping device 401 in a narrow space. Preferably, the axes of the first receiving portion 410 and the second receiving portion 412 coincide, and the axis is the center line L of the first receiving portion 410.

The second housing portion 412 may be provided on the basis of the first housing portion 410. Specifically, the first receiving portion 410 includes two bayonet-shaped abutting portions, and the second receiving portion 412 includes outwards from the edges of the two abutting portions. Extending the formed circumferential blocking portion. Therefore, the first accommodating portion 410 and the second accommodating portion 412 share the accommodating space S between the edges of the two splicing portions (the area enclosed by the broken line in FIG. 10), and the accommodating space has a rectangular cross section, and the rectangular shape The length is the distance between the two edges of the two sides of the abutting portion, and the width is the distance between the edges of the two sides of the same 4 氐 joint.

The first housing portion 410 may be provided on the basis of the second housing portion 412. Specifically, the second receiving portion 412 includes a regular polygonal blocking portion, and the first receiving portion 410 includes two bayonet-shaped abutting portions that are outwardly extended from the centers of the two opposite edges of the regular polygonal blocking portion. Therefore, the first accommodating portion 410 and the second accommodating portion 412 share the accommodating space S at the center of the second accommodating portion 412 (a region surrounded by a broken line in FIG. 10), and the accommodating space has a rectangular cross section, and the length of the rectangular portion The distance between the opposite edges of the positive multi-shaped receiving portion is the distance between the two edges of the same abutting portion.

Separately disposed separately, for example, the first receiving portion and the second receiving portion disposed side by side may respectively receive the first working head and the second working head, and cooperate with the clamping mechanism to respectively clamp the first working head and the second working head .

The mounting member 402 is also provided with a stop portion that limits the insertion depth of the working head. Returning to FIG. 9 , the mounting member 402 of the present embodiment can accommodate the first connecting portion 311 of the first working head 309 and the second connecting portion 316 of the second working head 310 , and the first connecting portion 311 and The shape and length of the second connecting portion 316 are not equal. Therefore, referring to FIG. 11 and FIG. 12, the mounting member 402 is provided with a first stopping portion 417 for limiting the insertion depth of the first working head 309; see FIG. 13, installation A second stop 419 that limits the depth of insertion of the second working head 308 is also disposed on the member 402.

The main connecting portion 311 is inserted into the first receiving portion when the first connecting portion 311 is inserted into the clamping device 401. For facilitating the receiving of the lug 314 and limiting the insertion depth of the first working head 309, referring to FIGS. 11 and 12, the mounting member 402 has a notch 415 extending axially away from the free end 403 of the output rod 6, and the notch 415 is along the output rod 6. The first stop portion 417 is a distal end of the second abutment portion 420. The first stop portion 417 is an end of the notch 415. The mounting member 402 is further provided with a card hole 413 opposite to the notch 415 and away from the free end 403. The 413 penetrates a section of the first abutting portion 414. The end of the card hole 413 away from the free end 403 is flush with the end of the notch 415, that is, flush with the first stopping portion 417. Therefore, the card hole 413 is away from the free end 403. One end can also be used as the first stop. thus. When the first connecting portion 311 is inserted into the first receiving portion 410, the first connecting portion 311 is aligned with the notch 415 and inserted into the first receiving portion 410 along the notch until one of the two lugs 314 is connected to the first stopping portion 4174. When the first working head 309 is inserted into position, the first working head 309 can be pressed in the direction in which the card hole 413 is located, and the other of the lugs 314 can be inserted into the card hole 413, and the first working head 309 can be inserted into position. . The notch 415 and the hole 413 of the present embodiment penetrate the abutting portion. Of course, the notch 415 and the hole 413 may block the lug 314 and may not penetrate the abutting portion.

Referring to FIG. 13, the second receiving portion 412 is a regular polygonal receiving hole extending along the axial direction of the output rod. The second stopper portion 419 is a stepped surface at which the second receiving portion 412 extends. When the second working head 3 10 is inserted into the second receiving portion 412 and the second stopping portion 4194 is engaged, the second working head 3 10 is inserted into position.

After the first connecting portion 31 1 of the first working head 309 is inserted into the first receiving portion 410, the clamping mechanism holds the first connecting portion 31 1 in the first receiving portion 410, so that the first working head 309 and the output The rod 6 is synchronously moved to process the workpiece; after the second connecting portion 3 16 of the second working head 3 10 is inserted into the second receiving portion 412, the clamping mechanism 406 holds the second connecting portion 3 16 in the second receiving portion 412. The second working head 3 10 is moved in synchronization with the output rod 6 to machine the workpiece.

Referring to Figure 12, the clamping mechanism 406 includes a locking member 422 that moves in a radial direction of the output rod 6, moving the locking member 422 between a first position of the locking working head and a second position of the release working head. The pressing member 424 presses the pressing member 424 to bias the pressing member 424 in the first position.

Referring to FIG. 13 and FIG. 14 , the mounting member 402 is provided with a receiving groove 409 communicating with the receiving portion 408 . The locking member 422 is received in the receiving groove 409 and protrudes from the outer surface of the mounting member 402 . After the portion 408, the locking member 422 presses the working head between the locking member 422 and the receiving portion 408 under the action of the pressing member 424.

In this embodiment, the locking member 422 is a pressing pin, and the pressing pin is provided with a circumferentially extending engaging groove 428 for engaging the working head, and the cross section of the engaging groove 428 is gradually decreased from the opening to the inner width. Specifically, the engaging groove 428 includes a engaging surface 430 for engaging the working head. On a plane perpendicular to the axis X of the output rod 6 (ie, the paper surface on which FIG. 14 is located), the projection of the engaging surface 430 is an opening. Opposite arc or polyline. In this way, the engaging groove 428 can be engaged with the first working head 309 of different thicknesses, and can also be conveniently engaged with the curved recesses 3 18 of the second working head 3 10 . There may be other modifications in this embodiment. For example, the locking member is provided as a steel ball, and the circumferentially extending engaging groove is no longer provided on the pressing pin, and the working head can be directly pressed by the pressing pin.

Referring to Figures 12 and 13, the pressing member 424 is moved in the axial direction of the output rod 6 to press or release the locking member 422 having an inclined 432 which is inclined with respect to the axial direction of the output rod 6. The different positions of the inclined surface 432 are in contact with the locking member 422, so that the locking member 422 can be changed between the two positions of the locking and releasing working head; when the locking member 422 is in the locking position, the different positions and the locking of the inclined surface 432 The tightening member 422 is in contact with the locking member 422 to lock the working heads of different sizes. Therefore, the different positions of the gradual inclined surface 432 of the embodiment cooperate with the locking member 422 to enable the locking member 422 to be in a plurality of different states, so that the clamping device 401 can clamp the working heads of different sizes, thereby greatly improving the clamping device. The scope of application of 401.

In this embodiment, the distance of the slope from the direction toward the output rod 6 and the axis X of the output rod 6 is gradually increased, so that the pressing member 424 moves away from the output rod 6 to gradually release the locking member 422 to release. Work head. Of course, those skilled in the art know that the distance of the slope from the direction toward the output rod 6 and the axis X of the output rod 6 is gradually reduced, so that the pressing member 424 is gradually moved away from the output rod 6 to gradually release the locking member 422. Therefore, the work head can be released. There may be other modifications in this embodiment, such as providing a circumferentially extending inclined surface on the pressing member, the inclined surface and the radius of the output rod axis are gradually changed, and the pressing member is rotated to make different positions of the inclined surface contact with the locking member. Clamp or release the working head and clamp the working heads of different sizes.

A guide is provided between the pressing member 424 and the mounting member 402, and the guiding member maintains the pressing member 424 to move in the axial direction of the output rod 6. The guiding device includes a protrusion 436 extending in an axial direction of the output rod 6 disposed on one of the mounting member 402 and the pressing member 424, and the other of the mounting member 402 and the pressing member 424 is engaged with the protrusion 436 The guiding groove 438 cooperates to move the guiding groove 438 only in the extending direction of the protrusion 436, so that the pressing member 424 can only move in the axial direction of the output rod 6.

The guiding groove 438 is open near one end of the output rod 6, and is closed away from the end of the output rod 6. The open end of the guiding groove 438 can conveniently mount the pressing member 424 on the mounting member 402 in the direction of the output rod 6; The closed end limits the position of the pressing member 424. As shown in Fig. 13, when the closed end 439 of the guide groove 438 abuts against the projection 436, the pressing member 424 is located at an extreme position close to the output rod 6.

The pressing member 424 is an annular pressing member that is sleeved on the mounting member 402. The inclined surface 432 is spaced apart from the guiding device. Preferably, the inclined surface 432 is disposed opposite to the guiding device, so that the two functions do not affect each other.

The biasing member 426 is a compression spring, and the mounting member 402 is connected with a stopping device 440. The biasing member 426 is abutted against the pressing member 424, and the other end is abutted against the stopping device 440. The biasing member 426 of the cone-shaped spring is sleeved on the outer surface of the annular pressing member 424. The pressing member 424 protrudes from the ridge 441 of the biasing member 426. The ridges 441 of the embodiment are two, and the relative output is The rod axis X is symmetrically disposed to reliably block the biasing member, and the two ridges are disposed oppositely to the annular member around the entire circumference of the pressing member 424 to reduce the weight of the ring member 424. The stop means 440 includes a resilient latch 442 embedded in the mounting member 402, a ring cover 446 abutting the resilient latch 442, and the other end of the biasing member 426 abutting the ring cover 446.

The biasing member 426 is movable between the two extreme positions shown in Figures 13 and 16, in the free state shown in Figure 13, the biasing member 426 is compressed such that the closed end 439 of the guide slot 438 abuts the projection 436. Thereby, the pressing member 424 is located at an extreme position close to the output rod 6. At the extreme position of the ready-to-clamp shown in FIG. 16, the pressing member 424 is moved against the biasing force of the biasing member 426 in a direction away from the output rod 6 to a position abutting against the ring cover 446, at which time the pressing member 424 is located. Keep away from the other extreme position of the output rod 6.

Referring to Figures 12 and 15, the clamping device further includes an operating member 448 coupled to the compression member 424 and driving the movement of the compression member 424.

The operating member 448 is engaged with the pressing member 424 such that the operating member 448 moves in the axial direction of the output rod 6 to move the pressing member 424 in the axial direction of the output rod 6. Specifically, please refer to FIG. 15. The inner surface of the operating member 448 is provided with two sets of ribs 449, and the two sets of ribs 449 respectively clamp a ridge 441 on the pressing member 424 therein, thereby pressing the operating member 448 and pressing Pieces 424 are tightly matched.

In this embodiment, in order to make the clamping device 401 reliably hold the working head, the mounting member 402 and the locking member 422. The pressing members 424 are all made of metal, preferably made of alloy steel with good strength, but the pressing member 424 made of metal does not provide a good operation interface. To improve the operation interface, the operation of this embodiment The component 448 is made of plastic, and the operator pushes the plastic operating component 448 to move the metal pressing member 424 to press or release the workpiece head, and the operation interface is friendly and convenient and quick to operate.

Preferably, the operating member 448 extends along the axial direction of the output rod 6, one end is tightly fitted with the ridge 441 of the pressing member 424, and the other end is sleeved on the outer surface of the ring cover 446 and covers the biasing member 426. Protecting the biasing member 426 and preventing dust from entering the interior of the clamping device 401 causes the clamping device 401 to fail.

The operating member 448 is further provided with a first letting groove 450 and a second letting groove 452 for respectively releasing the protrusion 436 and the locking member 422. When the clamping device 401 is assembled, the operating member 448 can be first set. On the mounting member 402, the pressing member 424 is then snapped into the operating member 448, and finally the biasing member 426, the ring cover 446 and the latch 442 are sequentially loaded; or the pressing member 424 can be first engaged into the operating member 448. The two are sleeved together on the mounting member 402, and the biasing member 426, the ring cover 446 and the cassette 442 are sequentially loaded, thereby facilitating the assembly of the clamping device 401.

The operation of the use of the clamping device 401 will be described below.

13 to 15 are cross-sectional views showing the clamping device in a free state, as shown in Fig. 13, at which time the biasing member 426 is compressed to close the closed end 439 of the guide groove 438 on the pressing member 424 with the mounting member. The protrusion 436 of the 402 abuts away from the end of the output rod 6. The pressing member 424 is located at the position closest to the output rod 6. The inclined surface 432 of the pressing member 424 abuts the end closest to the axis of the output rod 6 to abut the locking member 422 to lock The fastener 422 is retained within the receiving slot 409, and as shown in Figures 14 and 15, the locking member 422 partially extends into the receiving portion 408.

When preparing to clamp the workpiece head, referring to FIG. 16, against the force of the biasing member 426, the pressing member 424 is moved by the operating member 448 in a direction away from the output rod 6 until the pressing member 424 abuts the ring cover 446. The end of the inclined surface 432 which is farthest from the axis X of the output rod 6 is aligned with the locking member 422. At this time, the inclined surface 432 does not abut the locking member 422, and the locking member 422 can be in the space between the receiving groove 409 and the inclined surface 432. activity. Of course, the pressing member 424 moves in the direction away from the output rod 6 during the process of releasing the locking member 422, and does not necessarily need to reach the position abutting the ring cover 446, and the locking member 409 is appropriately inserted to allow the working head to be inserted. The accommodating portion 408 can pass the position of the locking member 409.

At this point, the working head can be inserted and the working head can be clamped. Figures 17 and 18 show a cross-sectional view of the clamping device 401 holding the first working head 309. Specifically, the sheet-like main body 3 13 of the first connecting portion of the first working head 309 is inserted into the first receiving portion 410 by the notch 415, until one lug 3 14 abuts the first stopping portion 417, the first work The head 309 is inserted into position, the operating member 448 is released, and the biasing member 426 automatically urges the pressing member 424 to move in the direction of the output rod 6 to move the inclined surface 432 in the axial direction of the output rod 6 until the inclined surface 432 and the output rod 6 axis The portion closer to X is in contact with the locking member 422 and is tightly locked. The locking member 422 further presses the first working head between the locking member 422 and the abutting portion 414 of the first receiving portion 410 facing the locking member 422. During the pressing of the first working head 309, the locking member 422 presses the lug 314 away from the locking member 422 into the hole 413. The hole 413 receives the lug 314 and further positions the first working head 309. Of course, during operation, the operator can also press the first working head 309 away from the locking member 422 after the lug 314 near the locking member 422 abuts the first stopping portion 417, so as to be away from the locking. The lug 314 of the tightening member 422 first abuts into the hole 413, and then the operating member 448 is released to cause the locking member 422 to lock the first working head 309 in the first receiving portion 410.

Figures 17 and 18 show a schematic view of the clamping device 401 holding a first working head 309 having a larger first dimension; Figures 19 and 20 show the clamping device 401 clamping having a second, smaller size A schematic view of the first workpiece head 309. Comparing FIG. 17 and FIG. 19, since the pressing member 424 is provided with a gradual inclined surface 432 to press the locking member 422, the different positions of the inclined surface 432 cause the locking member 422 to press the workpiece at different positions along the radial direction of the output rod 6. Therefore, the clamping device 401 can clamp the working heads of different widths. 18 and 20, since the projection of the abutting surface of the abutting portion is an arc or a broken line on a plane perpendicular to the axis of the output rod 6, the first receiving portion 401 of the clamping device 401 is abutted. The joint can reliably resist the sheet-shaped working heads of different thicknesses. In summary, the clamping device 401 of the present embodiment can hold the first working head of different sizes and has a wide range of applications.

As shown in FIGS. 19 and 20, when the first working head 309 having a smaller size is clamped by the clamping device 401, the first lug 314 is inserted into the first receiving portion 410 and the first stopping portion 417 along the notch 415. After the bevel 432 presses the working head or manually presses the working head to insert the second lug 314 into the card hole 413, the first lug 314 may be disengaged from the notch 415, and the card hole 413 is close to the output rod 6 and the first stop The flush end of the portion 417 abuts against the second lug 314 to prevent the working head from moving further in the direction toward the output rod 6.

When the clamping device 401 is in the state of being ready for clamping as shown in FIG. 16, the second working head 310 can also be inserted into the second receiving portion 412, and the clamping mechanism automatically holds the second working head 310 in the second receiving portion 412. . Specifically, after the clamping device 401 is in the ready-to-clamp state shown in FIG. 16, referring to FIG. 21 and FIG. 22, the second connecting portion 316 of the second working head 310 is inserted into the second receiving portion 412 to the second connecting portion 316. Abutting the second stopping portion 419, the second working head 310 is inserted into position, the arcuate groove 318 on the second connecting portion 316 is just aligned with the receiving groove 409, the operating member 448 is released, and the biasing member 426 is automatically pushed. The pressing member 424 moves in a direction close to the output rod 6 to move the inclined surface 432 in the axial direction of the output rod 6 until the portion of the inclined surface 432 which is closer to the axis X of the output rod 6 contacts the locking member 422 and is pressed and locked. The member 422, the locking member 422, in turn presses the second working head 310 between the locking member 422 and the abutting portion of the second receiving portion 412 facing the locking member 422.

It should be noted that, when the clamping device of the embodiment is in the ready-to-clamp state shown in FIG. 16, even if the locking member 422 is disengaged from the receiving groove 409, the inclined surface 432 is outputted in the direction of the clamping work head. During the directional movement of the rod 6, the locking member 422 can also be pushed into the receiving groove 409. Therefore, the clamping device of the embodiment uses the inclined surface 432 to press the locking member 422 to press the clamping mode of the working head. The assembly requirements of the device are not high, but the work is reliable.

It will be appreciated by those skilled in the art that the present invention may also have other implementations. For example, the first working head is not limited to a conventional jig saw blade, and other working heads having a sheet-like connecting portion may be inserted into the first receiving portion and held. In the first accommodating portion; after the first working head is held in the first accommodating portion, it is not limited to being driven by the power tool to reciprocate, and if the working portion is suitable for machining the workpiece by the power tool to rotate or otherwise move; The working head is not limited to a conventional drill bit, a bit, and other working heads that can be inserted into the second receiving portion and can be held in the second receiving portion; the working portion of the second working head is adapted to be driven by the power tool to reciprocate or other movements. Machining of workpieces is also possible.

23 to 27 show a power tool 300 of a third embodiment of the present invention.

The difference of the power tool 100 of the first embodiment of the power tool 300 of the present embodiment mainly includes: the power tool 300 of the embodiment further includes a support member 320 movably connected to the housing 2 to meet the working condition of the workpiece Respond to different needs.

Referring to Figures 23 to 25, the power tool 300 of the present embodiment further includes a support member 320 having a support surface 322. The support member 320 is movably coupled to the housing 2 and movable between a first position and a second position. In the first position shown in Fig. 24, the support surface 322 abuts against the workpiece. In the second position shown in Fig. 25, the support surface 322 does not abut against the workpiece. When the support member 320 is in the first position, the support surface 322 is located within the working area; when the support member 320 is in the second position, the support surface 322 is located outside the working area, whereby the support member 320 is movably connected to the housing 2 The support surface 322 is thus optionally located within or outside the work area. As previously mentioned, the working head includes a clamping portion that overlaps the clamping device 40 1 and a working portion that is coupled to the clamping portion, the area in which the working portion is located is the working area. The working area is a side of the plane away from the housing 2, centered on a plane perpendicular to the centerline X-X of the output rod 6 and abutting the distal end of the clamping device 401 away from the motor.

Specifically, in the first position shown in Figure 24, the support surface 322 is located within the work area. At this time, the support surface 322 is away from the housing 2 with respect to the clamping device 40 1 on the side of the output rod 6 extending from the housing 2, and can abut against the workpiece. In the second position shown in FIG. 25, the support surface 322 is located outside the working area. At this time, the support surface 322 is close to the housing 2 with respect to the clamping device 40 1 on the side of the output rod 6 extending from the housing 2, Any hindrance to the machining of the workpiece by the working head clamped on the clamping device 40 1 .

When the power tool 300 is in use, when the output lever 6 is in the first motion mode, the support member 320 can be located at the first position as shown in FIG. This kind of situation is generally applicable to the saw blade connected to the reciprocating cutting workpiece on the output rod 6. At this time, the power tool 300 is used as a reciprocating cutting workpiece to cut the workpiece, and the supporting surface 322 is located in the working area and can always abut against the workpiece to improve the cutting of the saw blade. Efficiency and cutting stability. When the output rod 6 is in the second motion mode and the power tool 300 reaches a particular processing state, the support member 320 can be in the first position as shown in FIG. This situation is generally applicable to the drill bit on the output rod 6 that is connected to the rotary motion by the rotary motion. At this time, the power tool 300 is used as a rotary tool, and the support surface 322 is located in the work area when the drill bit reaches a certain depth toward the workpiece. The workpiece can help the operator determine the drilling depth of the drill bit.

Preferably, the output rod 6 extends longitudinally and has a centerline X-X. When the support member 320 is in the first position shown in Fig. 24, the support surface 322 is perpendicular to the center line X-X. In this way, whether the support surface 322 is directly against the workpiece or the support surface 322 abuts against the workpiece when the power tool 300 reaches a certain machining depth, the support surface 322 can be brought into maximum contact with the workpiece. , to facilitate the use of the power tool 300. It will be appreciated by those skilled in the art that when the support member 320 is in the first position, the support surface 322 has other angles with the center line X-X, such as 30 degrees, 45 degrees, 60 degrees, and the like, which can also abut against the workpiece.

The output rod 6 is in the second motion mode and the support member 320 can be in the second position as shown in FIG. At this time, the support surface 322 is located outside the work area and the work head mounted on the clamp 401 is located on the front side of the support surface 322, and the support member 320 does not hinder the machining of the workpiece by the workpiece head. This case is generally applicable to the drill bit on the output rod 6 that is connected to the rotary motion by the rotary motion. At this time, the power tool 300 is used as a rotary tool, and the support surface 322 is located outside the work area and is received within the range of the housing 2. , the drill bit is not hindered from drilling into the workpiece at all and does not significantly increase the volume of the power tool 300.

In the present embodiment, the switching of the two motion modes of the output lever 6 is controlled by the operating member 52 of the motion converting mechanism, and the support member 320 is independent of the housing member 2 and the operating member 52 for switching the output lever mode.

Referring to Figures 24 and 25, the support member 320 is directly movably coupled to the housing 2. Preferably, the support member 320 is linearly moved relative to the housing 2 such that the support member 320 is in the first position shown in Figure 24 and shown in Figure 25. The movement between the second positions. Preferably, in the embodiment, the housing 2 is provided with a sliding groove, and the supporting member 320 is provided with a guiding member, and the guiding member slides in the housing 2 to linearly move the supporting member 320 relative to the housing 2.

Specifically, in conjunction with FIG. 23 and FIG. 26, the housing 2 is provided with a first sliding slot 323 and a second sliding slot 324, and the first sliding slot 323 and the second sliding slot 324 are symmetrically disposed with respect to the center line XX of the output rod 6. The shape is the same. The support member 320 is provided with a first guiding member 325 and a second guiding member 326 which are respectively slidably coupled with the first sliding slot 323 and the second sliding slot 324. The first guiding member 325 and the second guiding member 326 are opposite to the output rod 6 The center line XX is symmetrically arranged and has the same shape. The second guiding member 326 and the second sliding slot 324 are connected in the same manner as the first guiding member 325 and the first sliding slot 323. The following description is made by taking the first guiding member 325 and the first sliding slot 323 as an example. .

In this embodiment, the first sliding slot 323 is laterally disposed in a convex shape. The first guiding member 325 is a conditional extension member, and includes a strip main body 327 and a fin 329 extending from both sides of the strip main body 327. , The strip main body 327 is engaged with the upper half of the "convex" shaped first chute 323, and the flap 329 is engaged with both ends of the lower half of the "convex" shaped first chute 323, whereby the first guide 325 Stable and reliable sliding within the first chute 323 guides the linear movement of the support member 320.

In this embodiment, a chute is disposed on the casing 2, and a guide member is disposed on the support member 320. It will be appreciated by those skilled in the art that a guide member may be provided on the housing 2, and a slide groove that is slidably engaged with the guide member may be provided on the support member 320, and the support member 320 may also be linearly moved relative to the housing 2. In this embodiment, two guiding members are disposed on the supporting member 320. Correspondingly, two guiding grooves are disposed on the housing 2, so that the supporting member 320 can be stably moved linearly 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 also be appreciated by those skilled in the art that the guide member can take other forms, such as merely providing a strip-like body, or mating with the chute with balls, roller-like guides, as well as linearly moving the support member 320 relative to the housing 2. In this embodiment, the support member 320 moves linearly on the outer surface of the housing 2 relative to the housing 2, which can provide a good visual interface for the operator. It is conceivable to those skilled in the art that the support member 320 is opposite the housing 2 in the housing 2. Linear movement does not affect the use.

Referring to Figures 24 and 25, in the present embodiment, the direction in which the support member 320 linearly moves relative to the housing 2 is the direction in which the center line X-X of the output rod 6 extends. Since the output rod 6 extends longitudinally, in order to make the structure compact, the housing 2 extends in the same direction as the output rod 6 and has a certain extension length, and the support member 320 is linearly extended relative to the housing 2 along the center line XX of the output rod 6. The movement can fully utilize the extension length of the casing 2 without additionally providing a member having a certain length for the support member 320 to slide, so that the entire power tool 300 can be compact, compact, and convenient to hold and use. Of course, it will be appreciated by those skilled in the art that the linear movement of the support member 320 relative to the housing 2 relative to the housing 2 in other directions does not affect the use of the support member 320.

A position maintaining mechanism is provided between the support member 320 and the housing 2, and the position maintaining mechanism holds the support member 320 in a predetermined position relative to the housing 2.

In this embodiment, the preset position refers to the first position shown in FIG. 24 and the second position shown in FIG. 25, that is, the position maintaining mechanism can hold the support member 320 relative to the housing 2 at the first position shown in FIG. In position, the support member 320 can also be held relative to the housing 2 in the second position shown in FIG.

Referring to FIGS. 26 and 27, the position maintaining mechanism includes a locking member 330 disposed on the housing 1, and a fitting portion disposed on the supporting member 320. The locking member 330 is movable between a locking position and a releasing position, and is locked. Position, the locking member 330 is mated with the mating portion, and the supporting member 320 is held at a preset position; in the releasing position, the locking member 330 is disengaged from the mating portion, and the supporting member 320 is movable relative to the housing.

The position retaining mechanism also includes a biasing member 328 that abuts against the locking member 330. The biasing member 328 biases the locking member 330 to cause the locking member 330 to have a tendency to engage the mating portion and the mating portion.

In this embodiment, the locking member 330 is rotated about the center line XX of the output rod so as to be in the locked position and released. Move between positions. Specifically, the locking member 330 includes a locking body 342, and the locking member 330 is rotatably coupled to the inner surface of the housing 2 in an annular shape to move between the locked position and the released position.

The locking member 330 further includes a first locking portion 338 and a second locking portion 340 protruding from the locking body main body 342 in a direction toward the housing 2, the first locking portion 338 and the second locking portion 340 being opposite to the center of the output rod center line XX The first locking portion 338 is coupled with the first guiding member 325 to lock the first guiding member 325, and the second locking portion 340 and the second guiding member 326 are coupled to lock the second guiding member 326, so that the first locking portion 338 Cooperating with the second locking portion 340 to maintain the support in a preset position, the support member can be reliably held in the predetermined position of the housing 2.

The mating portion is a positioning hole into which the locking member 330 can be partially inserted. Specifically, with reference to FIG. 24 to FIG. 27, the first guiding member 325 is provided with a first positioning hole 333 and a second positioning hole 335 which are disposed at a certain distance along the extending direction of the center line XX of the output rod 6, and the first locking portion When the first positioning hole 333 is inserted into the first positioning hole 333, the first guiding member 325 is held in the first position; when the first locking portion 338 is inserted into the second positioning hole 335, the first guiding member 325 is maintained in the second position. Correspondingly, the second guiding member 326 is provided with a third positioning hole 337 and a fourth positioning hole 339 which are disposed at a certain distance along the extending direction of the center XX of the output rod 6. When the second locking portion 340 is inserted into the third positioning hole 337 The second guiding member 326 is held in the first position, and the second guiding member 326 is held in 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 symmetrically disposed with respect to the center line XX of the output rod 6. The first locking portion 338 and the second locking portion 340 are respectively matched with the first positioning hole 333 and the third positioning hole 337 or The second positioning hole 335 and the fourth positioning hole 339 are symmetrically disposed with respect to the center line XX of the output rod 6. The first locking portion 338 and the second locking portion 340 are simultaneously connected to the second positioning hole 335 and the fourth positioning hole 339, respectively. Mating or disengagement. Each of the positioning holes is preferably provided on the tab 329 of the support member 320, whereby the shorter locking portion can be inserted into the positioning hole.

As previously described, the lock body 342 is slidably mated with the inner surface of the housing 2, and the support member 320 is slid over the outer surface of the housing 2 such that the first locking portion 338 and the second locking portion 340 can be coupled to the support member 320. Referring to FIG. 26 and FIG. 27, the housing 2 is provided with a first opening 348 and a second opening 349 respectively for the first locking portion 338 and the second locking portion 340 to pass through.

Referring to FIG. 26 and FIG. 27, in the embodiment, the biasing member 328 is a coil spring. For convenient installation of the coil spring, the housing 2 is provided with an arcuate groove 346, and the locking member main body 342 has a protruding portion 332 protruding therefrom. The protruding portion 332 at least partially protrudes into the arcuate groove 346, and can play a certain limit on the rotation range of the protruding portion 332 and the locking body 342. The coil spring is received in the arcuate groove 346, and one end abuts against one end of the arcuate groove 346, and the other end abuts against the protrusion 332, and the layout is reasonable and compact.

Referring to FIG. 23, FIG. 26 and FIG. 27, in order to facilitate the operation of the locking member 330, the locking member 330 is provided with an operating button 347 on the main body 342 thereof, and the housing 2 is provided with an arc-shaped limiting slot 353, and the operating button 347 The position of the operating button 347 in the range of the limiting slot 353 can drive the first locking portion 338 and the second locking portion 340 to move between the locking position and the releasing position. Specifically, when the operation button 347 abuts against one end of the limiting slot 353, the first locking portion 338 and the second locking portion 340 are in the locking position; when the operation button 347 abuts the other end of the limiting slot 353 The first locking portion 338 and the second locking portion 340 are located at the release position.

The method of operation of the position maintaining mechanism will be described below.

26 and FIG. 27, when the locking member 330 is in the locking position shown in FIG. 26, the biasing member 328 is pressed against the end portion of the arcuate groove 346 by the compression pushing portion 332, and the first locking portion 338 passes through. The first opening 348 is inserted into the first positioning hole 333 or the second positioning hole 335 to maintain the first guiding member 325 in the first position or the second position relative to the housing 2, and correspondingly, the second locking portion 340 passes through the second The opening 349 is inserted into the third positioning hole 337 or the fourth positioning hole 339 to maintain the second guiding member 326 in the first position or the second position relative to the housing 2, and the support member is held in the first position relative to the housing 2 or Two locations.

Referring to FIG. 26 and FIG. 27, when unlocking, the operator rotates the operation button 347 in the unlocking direction against the urging force of the biasing member 328 to rotate the locking member main body 342, and the locking member main body 342 rotates to drive the first locking portion 338 and the second portion. The locking portion 340 is rotated to disengage the first locking portion 338 from the first positioning hole 333 or the second positioning hole 335, and simultaneously disengages the second locking portion 340 from the third positioning hole 337 or the fourth positioning hole 339. In the unlocked position shown in Fig. 27, the first guide member 325 and the second guide member 326 are slidable relative to the housing 2 such that the support member is linearly movable relative to the housing 2 to change the position of the support surface.

In this embodiment, the biasing member 328 abuts the housing 2, and the mating portion is disposed on the support member 320. It is conceivable by those skilled in the art that the biasing member abuts the support member, and the mating portion is disposed on the shell. Physical effects are also not affected. In this embodiment, the mating portion is a positioning hole through which the locking portion can be inserted. It is conceivable by those skilled in the art that other types of mating portions, such as the jaws, or only the contact surface abutting the locking portion are also provided. The same functionality can be achieved. In this embodiment, the support member 320 includes two guiding members that are slidably engaged with the housing 2 . Correspondingly, the locking member 330 includes two locking portions, and the two locking portions respectively lock one of the guiding members on the housing 2 . The structure is regular and the locking is reliable. Those skilled in the art can think that only one guiding member and one locking portion can achieve the same function.

Referring to FIG. 23 to FIG. 25, the support member 320 further includes a first side portion 350 and a second side portion 352 disposed on both sides of the support surface 322. When the support member 320 is in the first position shown in FIG. 24, the support surface The first side portion 350 and the second side portion 352 enclose the end of the output rod 6 therebetween. Specifically, the support surface 322, the first side portion 350 and the second side portion 352 will partially output the rod 6 and the clip. The tensioning device 401 is disposed 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 work on the clamping device 401. Observation of the state. Preferably, the first side portion 350 is disposed between the first guiding member 325 and the supporting surface 322, and the second side portion 352 is disposed at the second portion Between the guide member 326 and the support surface 322. The extending direction of the first side portion 350 and the second side portion 352 is parallel to the center line XX of the output rod 6 and the width is greater than the width of the first guide member and the second guide member. It will be appreciated by those skilled in the art that the guide member extends directly to the support surface such that a portion of the guide member becomes a side portion, or a deformation such as an opening is not provided on the side portion.

Referring to Figure 23, the power tool 300 further includes a handle 307 coupled to the housing 2, the handle 307 extending in an angle that is at an angle to the direction in which the housing 2 extends. The support member 320 further includes an extension portion 356 connected to the support surface 322. The handle 307 is provided with an insertion hole away from the end of the housing 2, and the extension portion 356 is bent and the end away from the support surface can be inserted into the insertion hole. When the support member 320 is in the first position, the partial support surface 322 and the extension portion 356 form a holding space 360 with respect to the handle 307. The handle 307 is provided with a switch 3 for controlling the motor. When the power tool 300 is in use, the operator's hand extends into the holding space 360 and controls the switch 3.

Referring to FIG. 23 to FIG. 25, in the embodiment, the first sliding slot 323 and the second sliding slot 324 are closed only at one end away from the supporting surface 322, and the first guiding is in the moving direction of the supporting surface 322 near the housing 2. When the member 325 and the second guiding member 326 abut the closed ends of the first sliding slot 323 and the second sliding slot 324 respectively, the supporting member 320 moves to the second position of the supporting surface 322 closest to the housing 2, and the positioning is accurate; The first sliding slot 323 and the second sliding slot 324 are open at one end near the supporting surface 322. When the operator controls the locking member to be in the releasing position by operating the button 347, the first guiding member 325 and the second guiding member 326 can respectively The first chute 323 and the second chute 324 slide in a direction away from the casing 2 and finally disengage from the casing 2. Thus, the support member 320 can be used as an attachment to the power tool, and the operator can choose to use the support member 320 or not use the support member 320 to satisfy the different operating habits of the operator. Of course, a limiting mechanism for holding the support member 320 on the housing 2 at all times and limiting the linear movement range of the support member 320 relative to the housing 2 may be provided between the support member 320 and the power tool, and details are not described herein.

The method of operation of the power tool 300 of the present embodiment will be described below.

Referring to FIG. 24, FIG. 26 and FIG. 27, the support member 320 of the power tool 300 is held in the first position relative to the housing 2. Specifically, the first locking portion 338 passes through the first opening 348 and the first guiding member 325. The first positioning hole 333 is mated, and the second locking portion 340 is engaged with the third positioning hole 337 on the second guiding member 326 through the second opening 349, and the supporting member 320 is reliably held in the first position. At this point, the support surface 322 is located within the work area, away from the housing 2 relative to the clamping device 401, which can always abut the workpiece or abut against the workpiece when the power tool 300 reaches a particular depth of machining.

25, 26 and 27, when the operator changes the position of the support member 320, the operation button 347 is rotated in the direction of the release lock member 330 to rotate the lock body 342, and the main body of the lock member 330 rotates to drive the first lock portion 338 and the first portion. The locking portion 340 is rotated and disengaged from the first positioning hole 333 and the third positioning hole 337 respectively, and the operator can slide the support member 320. The distance between the support member 320 and the housing 2 is more than the first positioning hole 333 and the third positioning position. After the length of the hole 337 along the direction of the center line XX of the output rod 6, the first certain The position hole 333 and the third positioning hole 337 are respectively offset from the first locking portion 338 and the second locking portion 340, and the operator can release the operation button 347, and the first locking portion 338 and the second locking portion 340 are at the biasing member 328. Rotating in the locking direction and respectively lie on the flaps 329 of the first guiding member 325 and the second guiding member 326, and continuing to slide the supporting member 320, when the supporting member 320 slides relative to the housing 2 to the first locking portion 338 and When the second positioning holes 335 of the guiding member 325 are aligned, the first locking portion 338 automatically rotates in the locking direction by the biasing member 328 and snaps into the second positioning hole 335. At the same time, the second locking portion 340 Aligned with the fourth positioning hole 339 of the second guiding member 326 and engaged with the fourth positioning hole 339 by the biasing member 328, the supporting member 320 is reliably held in the second position as shown in FIG. 25, at this time, the support The face 322 exits the work area and the support surface 322 does not cause any obstruction to the machining of the workpiece by the working head clamped on the clamping device 40 1 .

In this embodiment, the first positioning hole and the third positioning hole that hold the support member in the first position are only one pair. Therefore, there is only one first position of the support member, and those skilled in the art may also think that two people may be provided. For the above first positioning hole and third positioning hole, the support member has two or more first positions.

The above description takes the movement of the support member 320 from the first position to the second position as an example. The operation method of the support member 320 being switched from the second position to the first position is the same, except that the support member 320 is linear with respect to the housing 2. The direction of movement will not be described here.

Fig. 28 shows a power tool 500 according to a fourth embodiment of the present invention.

The power tool 500 of the present embodiment is based on the power tool 300 of the third embodiment, and a biasing device for biasing the support member 520 is added. The biasing device is preferably an elastic member 53 1 , and the elastic member 53 1 supports the same. The face 522 has a tendency to move in a direction away from the housing 2 in the direction in which the center line XX of the output rod extends. The output rod 6 is in the second motion mode of the output rotational motion, and the first position is the movement of the support member 520 relative to the housing 2. At all positions within the predetermined range of travel, the support member 520 causes the support surface 522 to always abut the workpiece in the first position.

This kind of situation is generally applicable to the drill bit on the output rod which is connected with the rotary motion to punch the workpiece. At this time, the power tool 500 is used as a rotary tool. During the drilling of the drill bit, the entire support member 520 gradually overcomes the elastic member 53 1 . The force allows the drill bit to continuously feed toward the workpiece, but the support surface 522 abuts against the workpiece under the action of the elastic member 53 1 , whereby the support surface 522 always abuts against the workpiece and guides during the drilling of the drill into the workpiece. The drill bit is fed toward the workpiece to stabilize the working state of the power tool 500.

In the present embodiment, the power tool 500 and the power tool 300 of the third embodiment are provided with the same position maintaining mechanism, and the position maintaining mechanism holds the support member 520 on the casing 2 at a preset position, in the preset position in this embodiment. It refers to the second position, and one of the first positions closest to the second position.

29 to 31 show a power tool 600 of a fifth embodiment of the present invention.

The main differences between the power tool 600 of the present embodiment and the power tool 300 of the third embodiment are: The specific shape of the struts 620 and the mounting position on the housing 2, the support member 620 and the housing 2 are further provided with a limiting mechanism for limiting the linear movement range of the support member 620 relative to the housing 2, and a specific structure of the position maintaining mechanism. . Below - for a description.

Referring to FIG. 29 and FIG. 30, the support member 620 of the present embodiment is provided with only one guiding portion 625. The guiding portion 625 is slidably engaged with the housing 2 in the housing 2 to linearly move the supporting member 620 relative to the housing 2, thereby supporting The member 320 moves between a first position shown in FIG. 29 and a second position shown in FIG. The guiding portion 625 is disposed in the casing 2, which has less influence on the appearance of the power tool 600, and can make the appearance of the power tool 600 more beautiful.

Referring to FIG. 29 and FIG. 30 , a limiting mechanism for limiting the linear movement range of the support member 620 relative to the housing 2 is further disposed between the support member 620 and the housing 2 , and the limiting mechanism holds the support member 620 on the housing 2 . And the support member 620 is only movable between the first position and the second position relative to the housing 2. Specifically, the limiting mechanism includes a bump 672 disposed on the support member 620, and a longitudinal slot 674 disposed on the housing 2 for the bump 672 to slide therein. The protrusion 672 is disposed on the end of the guiding portion 625 away from the supporting surface 622. As shown in FIG. 29, when the protrusion 672 abuts the end of the longitudinal groove 674 near the clamping device 401, the supporting member 620 is in the first position. As shown in FIG. 30, when the projection 672 abuts the end of the longitudinal slot 674 away from the clamping device 401, the support member 620 is in the second position. A person skilled in the art may think that the protrusions and the longitudinal slots are respectively disposed at other positions of the support member and the housing, or the protrusions are disposed on the housing, the longitudinal slots are disposed on the support member, and the support members are Limit the movement of the housing.

Referring to FIG. 29 to FIG. 3, the position maintaining mechanism of the embodiment sequentially abuts the biasing member 628, the intermediate member 63 1 , the locking member 630 , and the biasing member 628 abuts against the housing 2 , and the supporting member 620 An adapter portion engageable with the locking member 630 is disposed, the biasing member 628 moves the intermediate member 63 1 in a first direction, and the intermediate member 63 1 pushes the locking member 630 in a second direction perpendicular to the first direction. Move towards the locked position. In the present embodiment, the first direction is the extending direction of the center line X-X of the output rod 6, and the locking member 630 is moved in the second direction perpendicular to the center line to move between the locked position and the released position. Specifically, the biasing member 628 is a coil spring having one end abutting on the housing 2 and the other end abutting on the intermediate member 63 1 . To facilitate the installation of the spring, the intermediate member 63 1 is convexly provided with a coil spring. Socketed post 662.

The intermediate member 63 1 is provided with a locking surface 664 which abuts the locking member 630 in the locking position, a slope 666 disposed at an angle to the locking surface 664, and a receiving groove 668 connected to the inclined surface 666. The inclined surface 666 moves in the first direction to push the locking member. 630, the locking member 630 is displaced in the second direction to move toward the locking position, and the receiving groove 668 receives the locking member 630 in the releasing position.

In this embodiment, the locking member 630 is a steel ball. The mating portion is a first positioning hole 633 and a second positioning hole 635 disposed on the guiding portion 625. As shown in FIG. 29, when the steel ball is engaged in the first positioning hole 633, the supporting member 620 is maintained at the first position, such as Figure 3 1 shows the support member when the steel ball is snapped into the second positioning hole 635. The 620 remains in the second position. A positioning piece 670 is further disposed on the power tool 600. The positioning piece 670 is provided with a through hole for the steel ball to pass in 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. .

A limiting slot 653 is disposed on the housing 2, and an operating button 647 extending from the limiting slot 653 to the outer surface of the housing 2 is protruded from the limiting member 653. The operating button 647 is moved within the range of the limiting slot 653, and the operating button is operated. When the 647 is in contact with one end of the limiting slot 653, the intermediate member 63 1 drives the steel ball to be in the locked position; when the operating button 647 abuts the other end of the limiting slot 653, the intermediate member 63 1 drives the steel ball to be located. Release the position.

The method of operating the position maintaining mechanism of the present embodiment will be described below.

As shown in FIG. 29, the position maintaining mechanism holds the support member 620 in the first position. Specifically, the protrusion 672 on the support member 620 abuts the end portion of the longitudinal groove 674 near the clamping device 40 1 , and the support member 620 In the first position; the biasing member 628 pushes the intermediate member 63 1 to abut against the first end of the limiting slot 653, and the locking surface 664 on the intermediate member 63 1 pushes the steel ball into the first positioning hole 633 to support The piece 620 remains in the first position.

When adjusting the position of the support member 620 relative to the housing 2, the operator pushes the intermediate member 63 1 by the operation button 647 in the extending direction of the center line XX of the output rod 6 against the action of the biasing member 628, so that the intermediate member 63 1 and the limit position The other end of the groove 653 abuts. During this process, the locking surface 664 on the intermediate piece 63 1 is disengaged from the steel ball, and the steel ball passes through the through hole in the positioning piece 670 and slides along the inclined surface 666, and finally falls. In the receiving groove 668, the steel ball is completely disengaged from the first positioning hole 633 in the release position. At this time, the operator can freely move the support member 620 to move the support member 620 to the second position shown in FIG. 30, on the support member 620. The projection 672 abuts the end of the longitudinal slot 674 away from the clamping device 40 1 .

After the support member 620 reaches the second position shown in FIG. 30, the operator releases the operation button 647, and the elastic force of the biasing member 628 pushes the intermediate member 63 1 back to the position abutting the first end of the limiting groove 653. During this process, the inclined surface 666 on the intermediate member 63 1 pushes the steel ball to move in a direction perpendicular to the center line XX of the output rod 6, and the steel ball is matched with the second positioning hole 635 through the through hole in the positioning piece 670. The locking surface 664 on the intermediate member 63 1 abuts the steel ball to hold the steel ball in the second positioning hole 635, and the support member 620 maintains the second position shown in FIG.

The above description takes the process of moving the support member 620 from the first position position to the second position and locking, for example, the operation of the support member 620 moving from the second position to the first position and locking is the same, except that the support member 620 is different. The direction of movement is not repeated here.

32 to 35 show a power tool 700 of a sixth embodiment of the present invention.

The difference between the power tool 700 of the present embodiment and the power tool 300 of the third embodiment mainly includes: the relationship between the support member and the handle, and the direction of movement of the locking member in the position maintaining mechanism. Below - a detailed description.

Referring to FIG. 32 and FIG. 33, the power tool 700 of the present embodiment further includes a movable connection in the housing 2 The upper handle 707, preferably, the handle 707 is directly movably coupled to the housing 2, and the support member 720 is coupled to the handle 707 such that the support member 720 is indirectly movably coupled to the housing 2. Thus, when the support member 720 is moved between the first position shown in FIG. 32 and the second position shown in FIG. 33, the position of the handle 707 relative to the housing 2 is simultaneously changed, and the support member 720 can be located at different positions. At the same time, the power tool 700 is provided with a better grip experience and improved operating comfort. Preferably, the handle 707 is integrally provided with the support member 720, which can reduce the number of components and facilitate the installation of the power tool 700.

Referring to FIG. 32, the motor M is disposed in the housing 2, and the handle 707 is provided with a control board 766 connected to the switch 3. To ensure the movement of the handle 707 relative to the housing 2, the control board 766 and the housing 2 in the handle 707 The motor M is kept connected, and the control board 766 and the motor M are electrically connected by a wire 768. In order to smoothly connect the wire 768 to the control board 766 and the motor M, a through hole 770 is provided in a region where the housing 2 and the handle 707 are butted together, and the wire 768 is connected to the motor M and the control board 766 through the through hole 770.

The motor M in the housing 2 and the control board 766 in the handle 707 are connected by a wire 768, which is low in cost. 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. When the support member 720 moves the handle 707 to a predetermined position, the contacts are in electrical contact with a specific position of the track, thereby securing the housing. The motor M in 2 and the control board 766 in the handle 707 are also electrically connected.

Referring to FIG. 34 and FIG. 35, in this embodiment, the support 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 holding the support member 720 relative to the housing 2. A position maintaining mechanism between the first position and the second position.

The position maintaining mechanism includes a biasing member 728 and a locking member 730 abutting each other, and the biasing member 728 abuts against the supporting member 720. The housing 2 is provided with a fitting portion engageable with the locking member 730, and the locking member 730 can be Moving between the locked position and the released position, as shown in FIG. 34, in the locked position, the locking member 730 is engaged with the mating portion by the biasing member 728, and the supporting member 720 is maintained in the first position or the second position. As shown in FIG. 35, in the release position, the locking member 730 is disengaged from the mating portion against the action of the biasing member 728, and the support member 720 is movable relative to the housing 2.

Specifically, the support member 720 slides on the outer surface of the housing 2, and the portion of the housing 2 that is mated with the support member 720 is provided with a lateral hole 772. The locking member 730 includes a main body 742, and the main body 742 is disposed on the lateral hole 772. One end abuts against the biasing member 728, and the other end protrudes from the outside of the housing 2 and the support member 720 as an operating button 747. The locking member 730 protrudes from the main portion 742 at a substantially intermediate position thereof with a locking portion 738.

The mating portion is a positioning hole into which the locking portion 738 can be partially inserted. Specifically, the first positioning hole 733 and the second positioning hole 735 are disposed on the housing 2 at a distance along the extending direction of the center line XX of the output rod. When the locking portion 738 is inserted into the first positioning hole 733, the support member 720 is retained. In the first position; when the locking portion 738 is inserted into the second positioning hole 735, the support member 720 is maintained in the second position. In this embodiment, the locking portion 738 is received in the housing 2, and correspondingly, the first positioning hole 733 and the second positioning hole 735 are disposed in the shell. Body 2 inner surface.

In the present embodiment, the main body 742 of the locking member 730 has a strip shape, and the locking member 730 linearly moves in the extending direction of the main body 742 to move between the locked position and the released position. Preferably, the locking member 730 is moved in a direction perpendicular to the output rod centerline X-X to move between the locked position and the released position.

Referring to FIG. 34 and FIG. 35, when the locking member 730 is in the locking position shown in FIG. 34, the biasing member 728 is compressed to push the locking portion 738 into the first positioning hole 733 or the second positioning hole 735, and the supporting member 720 is opposite to the shell. The body 2 remains in the first position or the second position.

Referring to FIG. 34 and FIG. 35, when unlocking, the operator pushes the linear movement of the operating button 747 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. Upon reaching the unlocked position as shown in Fig. 35, the support member 720 is slidable relative to the housing 2 such that the support member 720 is linearly movable relative to the housing 2 to change the position of the support surface 722.

36 to 39 show a power tool 800 of a seventh embodiment of the present invention.

The main differences between the power tool 800 of the present embodiment and the power tool 300 of the third embodiment include: the manner in which the support member is movably coupled to the housing, the specific structure of the position maintaining mechanism, and the following - a detailed description.

Referring to Figures 36 and 37, in this embodiment, the support member 820 is linearly moved while rotating relative to the housing 2 to move between the first position shown in Figure 36 and the second position shown in Figure 37. Specifically, the housing 2 is provided with a spiral cam groove 876 extending in the direction of the center line XX of the output rod 6, and the support member 820 is provided with a pusher 878 that is coupled with the cam groove 876, and the pusher 878 and the cam groove 876 are provided. The mating linearly moves the support member 820 while rotating relative to the housing 2. Preferably, the direction in which the support member 820 is linearly moved relative to the housing 2 is the direction in which the center line X-X of the output rod 6 extends.

The spiral cam groove 876 is disposed on the housing 2, and the pushing member 878 is disposed on the support member 820, so that the volume of the support member 820 can be reduced, and the spiral cam groove can be disposed on the support member, and the pusher member is disposed on the housing. The same function can be achieved. In this embodiment, the direction in which the support member 820 rotates relative to the housing 2 while moving linearly is the extending direction of the center line XX of the output rod 6, so that the power tool 800 is compact, and the support member 820 linearly moves while rotating relative to the housing 2. The direction can also be in other directions.

The support member 820 includes a first acting portion 880 and a second acting portion 882. The pushing member 878 is disposed on the first acting portion 880 to linearly move the first acting portion 880 relative to the housing 2, and the second acting portion 882 is The first acting portion 880 is pivotally connected by a pivot 892 whose axis is perpendicular to the center line XX of the output rod 6, and the supporting surface 822 is disposed on the second acting portion 882.

The second acting portion 882 includes a first rod 884, a second rod 886, and a third rod 888 that are sequentially connected. The extending direction of the first rod 884 is parallel to the center line XX direction of the output rod 6, and the second rod 886 is perpendicular to the first rod. a rod 884, the third rod 888 and the second rod 886 are disposed at an obtuse angle, the first rod 884 and the first acting portion 880 The support surface 822 is disposed on the second rod 886 by the pivot 892. The third rod 888 serves as an extension to form a holding space 860 opposite the handle 807 when the support member 820 is in the first position shown in FIG. In this embodiment, the first rod 884, the second rod 886, and the third rod 888 are fixedly connected, and the second rod 886 is perpendicular to the first rod 884. As will be appreciated by those skilled in the art, the second rod 886 and the first rod 884 The other rods are fixedly connected at other angles, or the second rod 886 is pivotally coupled to the first rod 884 such that the support surface 822 can also abut the workpiece at an angle relative to the centerline XX of the output rod 6.

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

Specifically, referring to FIG. 36, the first holding device includes an elastic pressing plate 890 disposed on the handle 807. The pressing plate 890 presses the supporting member 820 to fix the supporting member 820 relative to the housing 2. Specifically, the elastic pressing plate 890 is pressed against the third portion. The rod 888 is remote from the end of the second rod 886, the support member 820 is held on the handle 807, and the handle 807 is fixed to the housing 2, and the support member 820 is fixed relative to the housing 2. Structure tube.

Referring to Figures 38 and 39, the second retaining means includes a resilient projection 894 disposed on the housing 2, a recess 896 disposed on the support member 820, the resilient projection 894 snapping into the recess 896, and the support member 820 is opposed The housing 2 is held in the second position. 37, in the present embodiment, the dimple 896 is disposed at a substantially central position of the third rod 888 of the support member 820. It will be appreciated by those skilled in the art that the dimples 896 may be disposed at other locations of the support member 820. In this embodiment, the elastic protrusions 894 are disposed on the casing 2, and the dimples 896 are disposed on the support member 820, and the elastic protrusions may be disposed on the support member to set the dimples on the casing. In this embodiment, the number of the elastic protrusions 894 and the dimples 896 are two, and the two dimples 896 are symmetrically disposed with respect to the center line of the output rod, and other numbers of matching elastic protrusions and dimples may be provided.

The method of operation of the power tool 800 of the present embodiment will be described below.

As shown in FIG. 36, the support member 820 of the power tool 800 is in the first position, the second rod 886 is perpendicular to the center line XX of the output rod 6, and the support surface 822 is located in the working area and perpendicular to the center line XX of the output rod 6, The end of the three rods 888 away from the second rod 886 is pressed by the elastic platen 890, and the support member 820 is held in the first position.

When the position of the support member 820 is changed, the third rod 888 is disengaged from the elastic pressure plate 890 against the elasticity of the elastic pressure plate 890, and the second action portion 882 is rotated about the center line XX of the output rod 6, since the second action portion 882 is wound. When the pivot 892 of the rotating portion 880 is perpendicular to the center line XX, when the second acting portion 882 is rotated about the center line XX of the output rod 6, the second acting portion 882 has no relative movement with the first acting portion 880, thereby The rotation of the second acting portion 882 about the center line XX of the output rod 6 will drive the first acting portion 880 to rotate about the center line XX of the output rod 6. When the first acting portion 880 is rotated, the pusher 878 disposed on the first acting portion 880 is rotated. Movement within the helical cam groove 876 on the housing 2, the entire The support member 820 linearly moves while rotating relative to the housing 2, gradually reaching the second position shown in FIG. During this process, the support surface 822 moves linearly with respect to the center line XX of the output rod 6, but is always perpendicular to the center line XX of the output rod 6.

Since the third rod 888 is disposed at an obtuse angle with the second rod 886, in the second position shown in FIG. 37, the third rod 888 is lifted away from the casing 2, so that the entire power tool 800 occupies a large space, which is not conducive to power. The use of the tool 800, at this time, the second acting portion 882 can be pivoted about the pivot 892 relative to the first acting portion 880 to gradually reach the second position shown in FIG. 38, at which time the third rod 888 is close to The housing 2 is held on the housing 2 by the cooperation of the resilient projection 894 and the recess 896, which reduces the space occupied by the entire power tool 800.

The above description takes the state change of the support member 820 from the first position to the second position as an example, and the state change of the support member 820 from the second position to the first position is reversed, and will not be described again.

40 to 44 show a power tool 900 of an eighth embodiment of the present invention.

The main differences between the power tool 900 of the present embodiment and the power tool 300 of the third embodiment include: the manner in which the support member is movably coupled to the housing, the specific structure of the support member, and the specific structure of the position maintaining mechanism, the following - a detailed description.

Referring to Figures 40 through 43, in this embodiment, the support member 920 is rotated relative to the housing 2 to move between a first position shown in Figure 40 and a second position shown in Figure 43.

Preferably, the support member 920 is rotated relative to the housing 2. Specifically, the housing 2 is provided with an adapter portion 998. The support member 920 rotates relative to the adapter portion 998 about the first axis 999 to rotate the support member 920 relative to the housing 2 about the first axis 999. The first axis 999 is perpendicular to the output. The center line XX of the rod 6. The adapter portion 998 is rotated about the second axis 997 relative to the housing 2, the second axis 997 is perpendicular to the first axis 999, and the second axis 997 intersects the first axis 999. In this embodiment, the handle 907 is disposed integrally with the housing 2, the adapter portion 998 is disposed at one end of the handle 907 away from the housing 2, and the adapter portion 998 is rotated relative to the handle 907 about the second axis 997, and the adapter portion 998 is opposite. The housing 2 is rotated about a second axis 997.

Referring to FIGS. 40 and 43, the support member 920 further includes a first side portion 950 and a second side portion 952 disposed on both sides of the support surface 922. The first side portion 950, the second side portion 952 and the support surface 922 form a receiving space. Space, when the support member 920 is in the first position shown in FIG. 40, the end of the output rod 6 is located in the receiving space; the power tool 900 further includes a battery pack 995 inserted on one end of the handle 907 away from the housing 2, When the support member 920 is in the second position shown in FIG. 43, the battery pack 995 is located in the accommodating space. Thus, when the support member 920 is in the first position, the clamping device 401 mounted on the end of the output rod 6 can be received therein to protect the clamping device 401, and when the support member 920 is in the second position, the first The side portion 950 and the second side portion 952 are snapped onto the battery pack 995, and the structure is reasonable and the appearance is beautiful. In this embodiment, the first side portion 950 and the second side portion 952 are identical in shape and symmetrically disposed with respect to the center line XX of the output rod 6, and The first side portion 950 and the second side portion 952 have openings therein, and the structure is reasonable and beautiful.

An extending portion 956 is disposed between the supporting surface 922 and the adapter portion 998. The extending direction of the extending portion 956 is disposed at an obtuse angle with the supporting surface 922. When the supporting member 920 is in the first position, the extending portion 956 and the partial supporting surface 922 and the handle 907 are provided. The holding space 960 is formed oppositely.

Referring to FIG. 40, FIG. 41, FIG. 43 and FIG. 44, the position maintaining mechanism of the present embodiment includes a pair of dimples 996 disposed on the support member 920, respectively disposed on one end of the housing 2 and the handle 907 away from each other. Two pairs of elastic protrusions 994. When the support member 920 is in the first position shown in FIG. 40, the recess 996 is engaged with the elastic protrusion 994 of the housing 2 away from the handle 907, and the support member 920 is held in the first position. When the support member 920 is in the second position shown in FIG. 43, the pocket 996 is engaged with the elastic protrusion 994 on the end of the handle 907 away from the housing 2, and the support member 920 is held in the second position. In this embodiment, a pair of dimples 996 are disposed on the support member 920. The two pairs of protrusions are respectively disposed on the housing 2 and the handle 907. It is conceivable to those skilled in the art that a pair of elastic members may be disposed on the support member 920. The protrusions are provided on the housing 2 and the handle 907 respectively. The number of the dimples 996 on the support member 920 is a pair, which are respectively disposed on the first side portion 950. And the second side portion 952 is symmetrically disposed with respect to the center line XX of the output rod 6, and other numbers of pits and elastic protrusions may be provided.

The method of operation of the power tool 900 will be described below.

As shown in FIG. 40, at this time, the support member 920 of the power tool 900 is in the first position, the support surface 922 is located in the working area to abut against the workpiece, and the recess 996 on the support member 920 is engaged with the housing 2 away from the handle 907. On the end of the resilient projection 994, the support member 920 remains in the first position.

When the position of the support member 920 is changed, the friction between the recess 996 and the elastic protrusion 994 is overcome, and the support member 920 is rotated about the first axis 999 with respect to the adapter portion 998, and gradually turns to the intermediate position shown in FIG. When the first side portion 950 and the second side portion 952 are offset from the output rod 6, the support member 920 is then caused to drive the adapter portion 998 to rotate relative to the housing 2 about the second axis 997 to reach another one shown in FIG. In the intermediate position, at this time, the supporting surface 922 is away from the output rod 6 with respect to the extending portion 956, and then the supporting member 920 is rotated relative to the housing 2 about the first axis 999 to reach the second position shown in FIG. 43, the first side portion 950 and The second side portion 952 is snapped onto the battery pack 995. At the same time, the recess 996 on the support member 920 is snapped onto the elastic protrusion 994 of the handle 907 away from the end of the housing 2, and the support member 920 is held in the second position.

The above description takes the state change of the support member 920 from the first position to the second position as an example, and the state change of the support member 920 from the second position to the first position is reversed, and will not be described again.

It will be appreciated by those skilled in the art that the present invention may have other implementations, but as long as the technical essence employed is the same or similar to the present invention, or any changes and substitutions made based on the present invention are in the present invention. Within the scope of protection.

Claims

claims

1. A power tool, including a housing, a motor housed in the housing, and an output rod driven by the motor through a transmission mechanism. The motor has an output shaft, and the output rod extends longitudinally and has a centerline. , characterized in that: the transmission mechanism includes a motion conversion mechanism, and the motion conversion mechanism is operable to drive the output rod in a first motion mode for outputting reciprocating motion and a second motion mode for outputting rotational motion.

2. The power tool according to claim 1, characterized in that: the motion conversion mechanism includes a driving mechanism and a mode switching mechanism, the mode switching mechanism includes a switching member and a limiting mechanism that are matched with each other, and the switching member can Moving between two positions, in the first position, the output rod is in the first movement mode, the switching member is disconnected from the driving mechanism and connected to the housing so that the limiting mechanism is connected to the housing. The housing is relatively fixed; in the second position, the output rod is in the second movement mode, the switching member is connected to the driving mechanism and the limiting mechanism is circumferentially fixed to the output rod.

3. The power tool according to claim 2, characterized in that: the housing is provided with a positioning member, the positioning member is relatively fixed to the housing in the rotation direction of the output rod, and the positioning member A coupling mechanism is provided between the component and the switching component. When the switching component is in the first position, the coupling mechanism connects the positioning component to the switching component. When the switching component is in the second position, the coupling mechanism connects the positioning component to the switching component. , the switching member is disengaged from the positioning member.

4. The power tool according to claim 3, characterized in that: the coupling mechanism includes a protrusion provided on one of the positioning member and the switching member; A slot on the other one of the switching parts. When the switching part is in the first position, the protrusion is matched with the slot. When the switching part is in the second position, the protrusion is connected with the slot. Disengage.

5. The power tool according to claim 4, characterized in that: the positioning member is axially movable on the housing, a spring is provided between the positioning member and the housing, The spring provides a biasing force for the protrusion to engage with the slot.

6. The power tool according to claim 2, characterized in that: the power tool includes an operating member provided on the housing, and the operating member rotates around the rotation axis of the output rod to drive the switching member. Move along the axial direction of the output rod.

7. The power tool according to claim 6, characterized in that: a conversion channel and a first cylindrical pin slidable in the conversion channel are provided between the operating member and the switching member, Convert channel wrap.

8. The power tool according to claim 6, characterized in that: a first planetary gear train and a second planetary gear train are connected in sequence between the motor and the driving body, and the second planetary gear train The internal gear ring of the system can move between two shifting positions along the axial direction of the output rod driven by the operating member. In the first shifting position, the internal gear ring is separated from the housing, and the The output rod moves at the first speed; in the second shifting position, the inner gear ring and the housing are relatively fixed, and the output rod moves at the second speed.

9. The power tool according to claim 8, characterized in that: a speed change channel and a second cylindrical pin slidable in the speed change channel are provided between the operating member and the inner gear ring, so The speed change channel is wrapped.

10. The power tool according to claim 9, characterized in that: a conversion channel and a first cylindrical pin slidable in the conversion channel are provided between the operating member and the switching member, Conversion channel channel, in the circumferential direction of the output rod, the longest distance that the first cylindrical pin moves in the first channel is equal to the longest distance that the second cylindrical pin moves in the second channel The longest distance is the same.

1 1. The power tool according to claim 10, characterized in that: the conversion channel further includes a third channel communicated with the first channel, and the third channel is along the direction of the output rod. Extending circumferentially and perpendicular to the rotation axis of the output rod, the transmission channel also includes a fourth channel communicated with the second channel, the fourth channel extending circumferentially along the output rod and relative to the output The rotation axis of the rod is inclined, and the first cylindrical pin and the second cylindrical pin respectively move in the first channel and the second channel at the same time and have the same moving distance in the circumferential direction of the output rod; The first cylindrical pin and the second cylindrical pin move in the third channel and the fourth channel respectively at the same time and have the same moving distance in the circumferential direction of the output rod.

12. The power tool according to claim 11, characterized in that: in the circumferential direction of the output rod, both ends of the conversion channel are flush with both ends of the speed change channel.

13. The power tool according to claim 2, characterized in that: a planetary gear reduction mechanism is provided between the motor and the driving mechanism, and the mode switching mechanism is arranged at a distance between the driving mechanism and the planetary gear reduction. one end of the institution.

14. The power tool according to claim 1, characterized in that: the output rod is coaxially arranged with the output shaft.

15. The power tool according to claim 1, characterized in that: the power tool further includes a support member with a support surface, the support member is movably connected to the housing and can be moved between the first position and the second position. Movement between two positions, in the first position, the support surface abuts the workpiece, and in the second position, the support surface does not abut the workpiece.

16. The power tool according to claim 15, characterized in that: when the output rod is in the first movement mode, the support member is located in the first position.

17. The power tool according to claim 15, characterized in that: when the output rod is in the second movement mode and the power tool reaches a specific processing state, the support member is located in the first position.

18. The power tool according to claim 15, characterized in that: when the output rod is in the second movement mode, the support member is located in the second position.

19. The power tool according to claim 15, characterized in that: the power tool further includes a biasing device that applies force to the support member, and the biasing device causes the support surface to have a bias along the center line. The extension direction tends to move away from the housing. When the output rod is in the second movement mode, the first position is within the predetermined stroke range of the movement of the support member relative to the housing. All locations.

20. The power tool according to claim 15, characterized in that: the support member moves linearly relative to the housing.

21. The power tool according to claim 20, characterized in that: the direction of the linear movement is the extension direction of the center line.

22. The power tool according to claim 20, characterized in that: the power tool further includes a handle movably connected to the housing, and the handle is linked with the support member.

23. The power tool according to claim 22, characterized in that: the handle and the support member are integrally provided.

24. The power tool according to claim 15, characterized in that: when the support member is in the first position, the support surface is perpendicular to the center line.

25. The power tool according to claim 15, characterized in that: the power tool further includes a handle movably connected with the housing, and the support member is linked with the handle.

26. The power tool according to claim 15, characterized in that: a position maintaining mechanism is provided between the support member and the housing, and the position maintaining mechanism maintains the support member at a position relative to the housing. Default position.

27. The power tool according to claim 1, characterized in that: the output rod is provided with a clamping device for clamping the working head, and the working head includes a clamping portion overlapping the clamping device and and The working part is connected to the clamping part. The area where the working part is located is the working area. The output rod extends longitudinally and has a center line. The power tool also includes a support member with a support surface. The support member is movable. Attached to the housing such that the support surface is selectively located within or outside the working area.

28. A clamping device, characterized in that: the clamping device is used to fix the first working head or the second working head on the output rod of the power tool, the output rod has an axis, the clamping device It includes a mounting piece and a clamping mechanism. The mounting piece is connected to the output rod and has a first receiving part and a second receiving part with different shapes. The first receiving part is used to receive the first connection of the first working head. part, the second receiving part is used to receive the second connecting part of the second working head, and the clamping mechanism keeps the first connecting part in the first receiving part or connects the second connecting part part is retained in the second receiving part.

29. The clamping device according to claim 28, characterized in that: the first receiving part includes a first contact part and a second contact part that are oppositely arranged and located between the first contact part and the The receiving space between the second contact parts.

30. The clamping device according to claim 29, characterized in that: the shape of the first contact part and the second contact part is a bayonet, and on a plane perpendicular to the axis, the The projection of the contact surface of the first contact portion and the contact surface of the second contact portion is an arc or a polyline.

31. The clamping device according to claim 28, characterized in that: the second receiving portion is a polygonal or circular receiving hole.

32. The clamping device according to claim 28, characterized in that: the first receiving part and the second receiving part partially overlap.

33. A power tool, including a housing, a motor accommodated in the housing, and an output rod driven by the motor through a transmission mechanism. The motor has an output shaft, characterized in that: the transmission mechanism includes a motion conversion mechanism, the motion conversion mechanism is operable to drive the output rod in a first motion mode for outputting reciprocating motion and a second motion mode for outputting rotational motion, and the output rod is connected to any one of claims 28 to 32 Clamping device.