CN106926179B - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN106926179B CN106926179B CN201511030367.9A CN201511030367A CN106926179B CN 106926179 B CN106926179 B CN 106926179B CN 201511030367 A CN201511030367 A CN 201511030367A CN 106926179 B CN106926179 B CN 106926179B
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- output shaft
- motor
- electric tool
- power supply
- rotational parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a kind of electric tools comprising: output shaft, motor, power supply device, shell, detection device and control device；Output shaft is used for outputting torsion, motor is for driving output shaft, and power supply device is used to power to motor, and shell is for accommodating motor, detection device is used to detect the rotational parameters of output shaft, and control device when rotational parameters reach preset parameter value for making power supply device stop powering to motor；Wherein, output shaft can be rotated using exporting axis as axis under the drive of the motor；Rotational parameters characterize the amount of spin of output shaft；Detection device is electrically connected or communicates to connect with control device composition, and control device is electrically connected with power supply device and/or motor composition.The electric tool can be unclamped in nut with respect to screw in nutting and autostop when not completely disengaging, to eliminate security risk a possibility that reducing workpiece or part failure.
Description
Technical field
The present invention relates to a kind of electric tools, and in particular to a kind of electric impact wrench.
Background technique
Electric wrench is exactly using alternating current or battery pack as the spanner of power, is that one kind tightens or loosers a bolt and nut
The high-intensitive tool of equal parts.Electric wrench be broadly divided into electric impact wrench, electric torsional shearing wrench, electric fixed-torque spanner,
Electronic corner spanner and electronic angular spanner etc..
Wherein, electric impact wrench is when unscrewing nut, because its intensity is higher, often will appear nut with respect to screw quilt
The case where back-outing completely, at this moment because nut is completely disengaged with screw, it is likely that will appear nut loss or fall and make
The problem of failing at workpiece is especially also possible to can have some potential safety problems in high altitude operation.
Summary of the invention
A kind of electric tool, comprising: output shaft, motor, power supply device, shell, detection device and control device；Output shaft
For outputting torsion, motor is for driving output shaft, and power supply device is used to power to motor, and shell is detected for accommodating motor
Device is used to detect the rotational parameters of output shaft, and control device is for making power supply device when rotational parameters reach preset parameter value
Stop powering to motor；Wherein, output shaft can be rotated using exporting axis as axis under the drive of the motor；Rotational parameters characterize defeated
The amount of spin of shaft；Detection device and control device composition be electrically connecteds or communicate to connect, control device and power supply device and/or
Motor constitutes electrical connection.
Further, detection device is used as and is turned by the rotation displacement or the turned circle number of output shaft of detection output shaft
Dynamic parameter.
Further, electric tool further include: default device；Default device is used to set the big of preset parameter value for user
It is small；Default device is electrically connected or communicates to connect with control device composition.
Further, detection device includes: signal generation apparatus and signal receiving device；Signal generation apparatus is for generating
Cyclical signal, signal receiving device are used for the cyclical signal detected or inductive signal generating device generates；Wherein, it detects
Device further includes processing unit, and the cyclical signal that processing unit processes signal receiving device is detected or sensed is rotated
Parameter.
Alternatively, detection device includes: magnetic part and Hall element；For generating magnetic signal, Hall element can be felt magnetic part
Magnetic number of magnetic part generation should be arrived；Magnetic part is installed to output shaft, and Hall element is fixed with respect to shell position.
Alternatively, detection device includes: O-ring, magnetic part and Hall element；O-ring is installed to output shaft, and magnetic part is used for
Magnetic signal is generated, Hall element can sense magnetic number that magnetic part generates；Wherein, at least partially embedded O-ring of magnetic part, suddenly
You fix element with respect to shell position.
Further, electric tool includes: the transmission device being set between motor and output shaft；Output shaft is formed with hammer
Anvil；Transmission device includes: hammer body and main shaft；Hammer body is equipped with the hammer block that can cooperate with hammer anvil, and main shaft drives hammer body is with output shaft
Line is to move back and forth while axis rotates along output axis direction；Hammer body can drive output shaft rotating forward or anti-in a manner of impact
Turn.
Further, electric tool further include: starter；Starter has the starting state that can mutually switch and pass
Closed state；When starter is in starting state, control device can be such that power supply fills when rotational parameters reach preset parameter value
It sets stopping to power to motor, when starter is in close state, control device stops the control to power supply device or motor
System；Wherein, starter can be in starting state when output shaft inverts or when being switched by user.
Another electric tool, comprising: output shaft, motor, power supply device, shell, work head, detection device and control dress
It sets；Output shaft has the output end for outputting torsion, and for driving output shaft, power supply device is used to power motor to motor,
Shell is installed for accommodating motor, work head to the output end of output shaft, and detection device is used to detect the rotational parameters of work head,
Control device when rotational parameters reach preset parameter value for making power supply device stop powering to motor；Wherein, output shaft exists
It can be rotated using exporting axis as axis under the driving of motor, work head and output shaft are constituted and rotated synchronously；Rotational parameters characterize work
Make the amount of spin of head；Detection device and control device composition be electrically connecteds or communicate to connect, control device and power supply device and/or
Motor constitutes electrical connection.
Further, detection device includes: O-ring, magnetic part and Hall element；O-ring is installed to work head, magnetic part
For generating magnetic signal, Hall element can sense magnetic number that magnetic part generates；Wherein, magnetic part is at least partially embedded O-shaped
Circle, Hall element are fixed with respect to shell position.
A kind of control method suitable for electric tool, wherein electric tool include: for outputting torsion output shaft,
For driving output shaft to rotate forward or motor, the power supply device for powering to motor and the shell for accommodating motor of reversion
Body；Wherein, control method is comprising steps of detect the rotational parameters of output shaft；Judge whether rotational parameters reach preset parameter value；
Power supply device is controlled when rotational parameters reach preset parameter value to stop powering to motor；Wherein, rotational parameters characterize output
The amount of spin of axis.
Further, rotational parameters are the rotation displacement of output shaft.
Further, rotational parameters are the turned circle number of output shaft.
Further, it the following steps before control method further includes the rotational parameters for detecting output shaft: presets pre-
The size of setting parameter value.
Further, step controls power supply device when rotational parameters reach preset parameter value and stops powering to motor defeated
Shaft could execute when inverting.
Further, step controls power supply device stops whether powering to motor when rotational parameters reach preset parameter value
Execute the control by user.
The electric tool can be unclamped in nut with respect to screw in nutting and autostop when not completely disengaging, thus
A possibility that reducing workpiece or part failure, eliminate security risk.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the electric tool of first embodiment；
Fig. 2 is the half sectional view of the electric tool in Fig. 1；
Fig. 3 is the flow chart of the control method of the electric tool suitable for Fig. 1；
Fig. 4 is the structural schematic diagram of output shaft and detection device in the electric tool of second embodiment；
Fig. 5 is the half sectional view of the electric tool of 3rd embodiment.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
The electric tool 100 of first embodiment shown in FIG. 1 includes: shell 10, switch 20, power supply device 30, motor (figure
Do not show) and output shaft 40.As shown in Fig. 2, electric tool 100 further include: transmission device 50.
Here electric tool 100 is by taking electric impact wrench as an example, for electric impact wrench, electronic work of the invention
Tool 100 can be automatically stopped nutting when nutting to opposite screw unclamps and does not completely disengage between both, from
And can be avoided nut and screw completely disengages and caused by screw or workpiece the problem of failing, but also can eliminate because
Nut and screw completely disengage and caused by security risk.
As depicted in figs. 1 and 2, shell 10 is used to accommodate each component in electric tool 100, and shell 10 may include handle
Portion 11 and receiving portion 12.Handle portion 11 is used to hold for user, and receiving portion 12 forms the accommodation space for accommodating each component；Switch 20
It can be installed on handle portion 11.User is capable of the trigger switch 20 of relatively convenient when holding handle portion 11, which can
To be arranged to start the main trigger of electric tool 100.
Power supply device 30 is used to power to motor, and for electric impact wrench, power supply device 30 can be removable for energy
That unloads is bound to the battery pack of shell 10, can also be powered by way of external alternating current for electric impact wrench.Motor is used
Power output is converted into the electric energy for providing power supply device 30 with driving transmission device 50.Output shaft 40 is used for outputting torsion,
Under the drive of the motor, output shaft 40 can be to export axis 101 as axis rotation.
Transmission device 50 is arranged between motor and output shaft 40, and transmission is constituted between both for making.For electricity
For dynamic impact wrench, transmission device 50 can drive output shaft 40 to rotate in a manner of impact.
Specifically, transmission device 50 may include: main shaft 51 and hammer body 52.One end of output shaft 40 is output end, output
End is used for outputting torsion, and the other end is formed with or is connected with a pair of of hammer anvil 41.Here the output towards output shaft 40 is also defined
Before end is defined as, after the other end for being equipped with hammer anvil 41 towards output shaft 40 is defined as, front-rear direction here is just for the sake of just
It is arranged in clearly illustrating technical solution of the present invention, is not intended as limiting essentiality content of the invention.
The front end of one end that hammer anvil 41 is equipped with close to output shaft 40 that hammer body 52 is arranged, hammer body 52 is equipped with energy and output shaft
A pair of of hammer block that hammer anvil 41 on 40 cooperates (figure is not marked).The through-hole that can be passed through for main shaft 51 is additionally provided with inside hammer body 52, it is main
Corresponding on axis 51 and hammer body 52 to be equipped with two and half ball grooves (figure is not marked), being equipped between half ball groove can be free to slide wherein
Sphere (figure do not mark), one section of spring (figure is not marked) is additionally provided between main shaft 51 and hammer body 52, in half ball groove, sphere and spring
Mating reaction under, may make main shaft 51 drive hammer body 52 with export axis 101 be axis rotation while along output axis 101
Direction moves back and forth that output shaft 40 is driven to rotate forward or invert in a manner of impact.For half ball groove, sphere and spring
How to cooperate so that main shaft 51 drive hammer body 52 drive output shaft 40 for the prior art in a manner of impact, do not remake here in detail
It introduces.
Electric tool 100 further includes detection device (figure is not marked) and control device (not shown), and detection device and control fill
Composition electrical connection or communication connection are set, control device is electrically connected with power supply device 30 and/or motor composition.Wherein, detection dress
The rotational parameters for detecting output shaft 40 are set, control device is used for the control when the rotational parameters of detection reach preset parameter value
Power supply device 30 stops powering to motor.It is known that, in the turn of the screw, often going out for electric impact wrench
The case where existing nut and screw completely disengage, and the appearance of such case is likely to cause workpiece failure or generates certain peace
Full hidden danger.And one or more rotational parameters are detected by detection device, which characterizes the amount of spin of output shaft 40,
Then whether reach preset parameter value by the rotational parameters that control device judgement detects, detected when control device judgement
When rotational parameters reach preset parameter value, control device, which can control power supply device 30, stops that motor is powered or controlled to motor
Stalling, so as to avoid the occurrence of nut and the case where screw completely disengages.
Need exist for making further explanation to the rotational parameters of output shaft 40: rotational parameters are characterization output shaft 40
One parameter of amount of spin that is to say that rotational parameters characterize output shaft 40 and have rotated how many with respect to a position.
Preset parameter value is preset to be in initial position or a certain preset position activity to unscrewing from nut
The amount of spin of output shaft 40 when position.Certain preset parameter value can also be arranged not according to nut with respect to the tightening degree of screw
Same value.
For output shaft 40, the parameter for characterizing its amount of spin can be in initial position or a certain default from nut
Position when output shaft 40 locating for initial position or preset detection position start to calculate to nut and be in when unscrewing position
The cut-off of the location of output shaft 40.Wherein, initial position can be for locating for output shaft 40 when not operating to nut also
Position, preset detection position can be to carry out nut to unscrew operation, but detection device is not opened from initial position
Begin to detect, but detected from a position after initial position, which is considered preset
Detect position.
In this way, detection device is by following when user is in 100 nutting of electric tool used as electric impact wrench
The rotational parameters of amount of spin of the detection of ring for characterizing output shaft 40 reach when nut is unclamped with respect to screw and unscrew position
When, rotational parameters reach preset parameter value, and at this moment control device control power supply device 30 stops powering to motor, motor stalling,
Nut is in respect to screw unscrews position and both is not completely disengaged also, so as to avoid screw and nut from completely disengaging
Workpiece caused by and failure and generate security hidden trouble, and then can be improved workpiece validity, improve working efficiency with
And it eliminates safe hidden trouble.
Specifically, the rotational parameters of the amount of spin of characterization output shaft 40 can for 40 relative initial position of output shaft or
The turned rotation displacement in preset detection position can also be 40 relative initial position of output shaft or preset detection position
Turned circle number.Wherein, rotation displacement refers to certain point relative initial position or preset detection on output shaft 40
The turned angle in position or arc length.It should be noted that the turned angle of output shaft 40 is not with one for angle
It is limited within round angle, in other words, if output shaft 40 rotated more than one week less than two weeks, angular displacement at this moment is should be
One round angle adds the degree more than a round angle, and must not believe that angular displacement at this time is only the degree for being more than a round angle.Equally
, for arc length, the turned arc length of output shaft 40 is not also limited with a perimeter.
Here, rotational parameters are the parameters of one kind angle, circle number, arc length etc., these parametric users can be according to warp
It tests and is easy to obtain, such user, which can preset one, relatively can reasonably indicate the parameter preset that nut is unscrewed
The parameter of value, this speed loaded relative to detection characterization, torsion etc is more intuitive.Because these characterizations of speed, torsion are negative
The parameter of size is carried for ordinary user, is difficult to be set as how many suitable with experience to obtain, or reach more
It is few to indicate that nut is unscrewed with respect to screw, on the contrary, in contrast the parameter of these characterization loads usually only specially does technology
Research staff can calculate, therefore the practicality be nothing like by detection characterization amount of spin rotational parameters come more
To be direct, to improve the practicability of electric tool 100.
Detection device can be the Hall sensor based on Hall effect, can also be for based on photoelectric photoelectric sensing
Device can also be the contact measuring apparatus etc. based on theory of mechanics.
As concrete scheme, detection device includes: signal generation apparatus and signal receiving device.
Wherein, signal generation apparatus is installed to output shaft 40, and signal generation apparatus, which can produce, can react output shaft 40
A kind of cyclical signal, such as magnetic signal, optical signal, electric signal of position etc..Even, signal generation apparatus can be output shaft
One can react its mechanical structure to rotate, such as the bulge-structure formed on output shaft 40 on 40, in output shaft
When 40 rotation, bulge-structure also rotates with output shaft 40, and the rotation of the bulge-structure can react output shaft 40 and occur to turn
Dynamic, the rotation that bulge-structure occurs at this time is it is also assumed that be that signal generation apparatus produces signal.In other words, signal occurs
The signal that device generates, which is not restricted to it, can really issue certain PM signals.
Signal receiving device is fixedly installed with respect to shell 10, and signal receiving device can incude or detect or receive signal
The cyclical signal that generating device generates, such as magnetic signal, optical signal can be incuded, or receive electric signal, then alternatively, signal
Generating device can detect perhaps incude bulge-structure generation rotation these may be considered signal receiving device induction or
Detect or have received the cyclical signal of signal generation apparatus generation.Likewise, signal receiving device induction or detection
Or received cyclical signal is also not restricted to it can really receive certain PM signals.
Detection device can also include processing unit, the week that processing unit processes signal receiving device is detected or sensed
Phase property signal is to obtain rotational parameters.For example, signal generation apparatus is used to generate magnetic signal, when signal receiving device senses
When primary periodic magnetic signal, processing unit records a data, when signal receiving device senses a second periodicity again
Magnetic signal when, processing unit records a data again, and the data for handling record obtain the size of real-time rotational parameters
And the data are transferred to control device, it circuits sequentially.
As a kind of scheme, above mentioned preset parameter value can be a uncontrollable fixed value, such as when turn
When dynamic parameter is the circle number that output shaft 40 rotates, which can for example be set to defeated when regular situation lower nut is unscrewed
The 40 turned circle number of institute of shaft, for example, 5.Certainly, preset parameter value can also be set by user according to real work demand
Fixed, at this moment, electric tool 100 for example may include a default device (not shown), presets device and control device constitutes electricity
Connection or communication connection.Specifically, default device may include man-machine interface or the operation button being arranged on the housing 10
Etc. structures, user by operate the structures such as man-machine interface or operation button can preset the big of a preset parameter value
It is small.For example, it is whole into n2 that preset parameter value can be set to n1 for when rotational parameters are the circle number that output shaft 40 rotates
Numerical value, or even it is also possible to be set to n1 to the discrete fractional value between n2.
As a kind of scheme, electric tool 100 can also include starter (not shown), and starter has can be by phase
The starting state and closed state mutually switched.Wherein, when starter is in starting state, control device can be in rotational parameters
Power supply device 30 is set to stop powering to motor when reaching preset parameter value, and when starter is in close state, control dress
Set the control stopped to power supply device 30 or motor.In other words, whether control device can reach default ginseng in rotational parameters
Power supply device 30 is set to stop the control for being also activated device to motor power supply when numerical value.Wherein, starter can export
Axis 40 automatically switches to starting state when inverting, and can also switch to starting state by the active operation of user.
As shown in Fig. 2, in the present embodiment, signal generation apparatus may include magnetic part 61, and signal receiving device can be with
Including Hall element 62.
Wherein, magnetic part 61 is installed for generating magnetic signal, magnetic part 61 to output shaft 40, such as magnetic part 61 passes through
The mode of insertion is embedded in output shaft 40, and magnetic part 61 is specifically as follows magnet.Hall element 62 can sense that magnetic part 61 produces
Raw magnetic signal, Hall element 62 are fixed with respect to 10 position of shell, and Hall element 62 can be directly mounted on shell 10, or
It can also install to the fixed components in opposite 10 position of shell.In this way, when output shaft 40 rotate when, magnetic part 61 with
Output shaft 40 rotate synchronously, also just because of magnetic part 61 be with output shaft 40 rotate synchronously, therefore with respect to Hall element 62 and
Speech, Hall element 62 can sense periodically variable magnetic signal when magnetic part 61 rotates.When 62 first time of Hall element
When sensing magnetic signal, Hall element 62 or processing unit record a data, and when Hall element 62 senses magnetic again
When signal, Hall element 62 or processing unit record a data again, while the data of processing unit processes record obtain
The data are simultaneously transferred to control device, control device real-time judge rotational parameters and default ginseng by the size of real-time rotational parameters
The size of numerical value, circuit sequentially more than process, until rotational parameters reach preset parameter value, at this moment control device controls power supply
Device 30 stops powering to motor.Wherein, the setting of magnetic part 61 can make the just Hall in one circle of rotation of output shaft 40
Element 62 senses a cyclical signal, then the corresponding circle number that can be rotated by output shaft 40 of rotational parameters at this time.
The setting of certain magnetic part 61 is also possible that Hall element 62 can sense magnetic signal when output shaft 40 turns an angle,
So angle that rotational parameters can also be rotated by output shaft 40 at this time.
As shown in figure 3, the present invention also proposes that a kind of control method suitable for electric tool 100, the control method include
Following steps:
Detect the rotational parameters of output shaft 40.
Wherein, rotational parameters characterize the amount of spin of output shaft 40, and rotational parameters can be output shaft 40 with respect to initial bit
Setting the perhaps turned rotation displacement in preset detection position can also be 40 relative initial position of output shaft or preset inspection
Location sets turned circle number.Wherein, rotation displacement refers to the certain point relative initial position or default on output shaft 40
The turned angle in detection position or arc length.When electric impact wrench is in nutting, the 40 turned circles of institute of output shaft
Several or angle can directly react nut circle number turned with respect to screw or angle.
Judge whether rotational parameters reach preset parameter value.
When electric impact wrench is in nutting, the turned circle number of 40 institute of output shaft or angle can directly react nut
The opposite turned circle number of screw or angle.And rule of thumb, as long as user electric tool 100 starting before preset it is pre-
The size of setting parameter value can basically represent when rotational parameters reach the preset parameter value nut opposite screw worked itself loose
It opens and both is not completely disengaged.
Power supply device 30 is controlled when rotational parameters reach preset parameter value to stop powering to motor.
When rotational parameters reach preset parameter value, the turned angle of output shaft 40 or circle number make nut with respect to spiral shell
Silk unclamps, and at this moment can control and disconnects switch 20, so that power supply device 30 stops powering to motor.
As a kind of scheme, for control device whether control power supply device 30 stop the step of powering to motor can be with
By the control of user or the control of the operating condition by electric tool 100.For example, when output shaft 40 inverts, control device
It can control power supply device 30 to stop powering to motor, and when output shaft 40 rotates forward, control device not can control power supply device 30
Stop powering to motor, in other words, only just can control when output shaft 40 inverts and rotational parameters reach preset parameter value
Power supply device 30 stops powering to motor；For another example, when user makes starter be in starting state, control device be can control
Power supply device 30 stops powering to motor, and when control device is in close state, control device not can control power supply device
30 stop powering to motor, and the stopping of control power supply device 30 is held to what motor was powered when in other words rotational parameters reach preset value
Row is also by the control of user.
It, can also be preparatory according to actual operating condition before user is using 100 nutting of electric tool as a kind of scheme
The size for setting preset parameter value, so that it applies more widely for electric tool 100.Wherein, step setting is default
The size of parameter value can be set before or after the rotational parameters of step detection output shaft 40.
These parametric users can rule of thumb be easy to obtain, such user can preset one and relatively close
The preset parameter value that can be indicated nut and unscrew of reason, the parameter of this speed loaded relative to detection characterization, torsion etc is more
Intuitively.Because the parameter of these characterization payload sizes of speed, torsion is difficult to answer with experience to obtain for ordinary user
When being set as how many suitable, or reach how much could indicate that nut is unscrewed with respect to screw, on the contrary, these characterize the parameter loaded
In contrast the research staff for usually only specially doing technology can calculate, therefore the practicality is nothing like passing through detection
The more direct of the rotational parameters of amount of spin is characterized, to improve the practicability of electric tool 100.
Fig. 4 show the structure of the output shaft 40 ' of the electric tool of the second embodiment of the present invention, in this embodiment,
It is only that the specific structure of detection device is different from the difference of first embodiment.Energy in first embodiment is adapted
Structure and principle can be adapted for the present embodiment, specifically repeat no more.The present embodiment is only introduced below to be implemented with respect to first
The difference part of example:
In the present embodiment, detection device includes: magnetic part 61 ', Hall element 62 ' and O-ring 63 '.Wherein, O-ring
63 ' are sleeved on output shaft 40 ', and O-ring 63 ' for example can be rubber ring.Magnetic part 61 ' is for generating magnetic signal, magnetic part
61 ' are embedded in O-ring 63 ', rotate synchronously in this way, magnetic part 61 ' can be constituted with output shaft 40 '.Hall element 62 ' can incude
To magnetic signal, Hall element 62 ' is fixedly installed with respect to shell.Hall element 62 ' can be installed to shell, can also install to
On the fixed components of one opposite shell.
Fig. 5 show the structure of the electric tool 100 " of the third embodiment of the present invention, in this embodiment, with first
The difference of embodiment is only that: electric tool 100 " further includes installing to the work head 70 " of the output end of output shaft 40 " and inspection
Survey the specific structure of device.The structure and principle adaptable for the energy in first embodiment can be adapted for this implementation
Example, specifically repeats no more.Difference part of the present embodiment with respect to first embodiment is only introduced below:
Wherein, work head 70 " and output shaft 40 ", which are constituted, rotates synchronously, for electric impact wrench, the work head
70 " can be sleeve.Detection device is used to detect the rotational parameters of work head 70 ", and control device in rotational parameters for reaching
Power supply device 30 " is set to stop powering to motor when preset parameter value, wherein rotational parameters characterize the amount of spin of work head 70 ".
Specifically, in the present embodiment, detection device includes: magnetic part 61 ", Hall element 62 " and O-ring 63 ".Its
In, O-ring 63 " is sleeved on sleeve, and O-ring 63 " for example can be rubber ring.Magnetic part 61 " is magnetic for generating magnetic signal
Part 61 " is embedded in O-ring 63 ", is rotated synchronously in this way, magnetic part 61 " can be constituted with output shaft 40 ".Hall element 62 " can be felt
Magnetic signal should be arrived, Hall element 62 " is fixedly installed with respect to shell 10 ".Hall element 62 " can be installed to shell 10 ", can also
To install to the fixed components of an opposite shell 10 ".
It will of course be understood that, in other embodiments, detection device can also detect and output shaft or work head company
The rotational parameters of the workpiece connect equally can solve technical problem solved by the invention in this way.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (9)
1. a kind of electric tool, comprising:
Output shaft is used for outputting torsion；
Motor, for driving the output shaft；
Power supply device, for powering to the motor；
Shell, for accommodating the motor；
Switch, for starting or closing the electric tool；
Wherein, the output shaft can be rotated using exporting axis as axis under the driving of the motor；
It is characterized by:
The electric tool further include:
Detection device, for detecting the rotational parameters of the output shaft；
Control device, for making the power supply device stop supplying to the motor when the rotational parameters reach preset parameter value
Electricity；
Wherein, the rotational parameters characterize the amount of spin of the output shaft；The detection device and the control device are constituted
Electrical connection or communication connection, the control device are electrically connected with the power supply device and/or motor composition；
The electric tool further include:
Starter has the starting state and closed state that can mutually switch；The starter is for controlling the control
Whether device makes the power supply device stop powering to the motor when the rotational parameters reach preset parameter value；
When the starter is in the starting state, the control device can reach described default in the rotational parameters
The power supply device is set to stop powering to the motor when parameter value, when the starter is in the closed state, institute
State control of the control device stopping to the power supply device or the motor；Wherein, the starter can be described defeated
The starting state is in when shaft inverts or when being switched by user.
2. electric tool according to claim 1, it is characterised in that:
The detection device is by the rotation displacement or the turned circle number of the output shaft of the detection output shaft as institute
State rotational parameters.
3. electric tool according to claim 1, it is characterised in that:
The electric tool further include:
Default device, for setting the size of the preset parameter value for user；
The default device is electrically connected or communicates to connect with control device composition.
4. electric tool according to claim 1, it is characterised in that:
The detection device includes:
Signal generation apparatus, for generating cyclical signal；
Signal receiving device, the cyclical signal generated for detecting or incuding the signal generation apparatus；
Wherein, the detection device further includes processing unit, signal receiving device described in the processing unit processes detection or
The cyclical signal sensed obtains the rotational parameters.
5. electric tool according to claim 1, it is characterised in that:
The detection device includes:
Magnetic part, for generating magnetic signal；
Hall element can sense magnetic number that the magnetic part generates；
The magnetic part is installed to the output shaft, and the relatively described shell position of the Hall element is fixed.
6. electric tool according to claim 1, it is characterised in that:
The detection device includes:
O-ring, installation to the output shaft；
Magnetic part, for generating magnetic signal；
Hall element can sense magnetic number that the magnetic part generates；
Wherein, at least partially embedded O-ring of the magnetic part, the relatively described shell position of the Hall element are fixed.
7. according to claim 1 to electric tool described in 6 any one, it is characterised in that:
The electric tool includes:
Transmission device is set between the motor and the output shaft；
The output shaft is formed with hammer anvil；
The transmission device includes:
Hammer body, equipped with the hammer block that can cooperate with the hammer anvil；
Main shaft drives the hammer body back and forth to transport while rotating using the output axis as axis along the output axis direction
It is dynamic；
The hammer body can drive the output shaft to rotate forward or invert in a manner of impact.
8. a kind of electric tool, comprising:
Output shaft has the output end for outputting torsion；
Motor, for driving the output shaft；
Power supply device, for powering to the motor；
Shell, for accommodating the motor；
Switch, for starting or closing the electric tool；
Work head is installed to the output end of the output shaft；
Wherein, the output shaft under the driving of the motor can using export axis as axis rotate, the work head with it is described defeated
Shaft, which is constituted, to be rotated synchronously；
It is characterized by:
The electric tool further include:
Detection device, for detecting the rotational parameters of the work head；
Control device, for making the power supply device stop supplying to the motor when the rotational parameters reach preset parameter value
Electricity；
Wherein, the rotational parameters characterize the amount of spin of the work head；The detection device and the control device are constituted
Electrical connection or communication connection, the control device are electrically connected with the power supply device and/or motor composition；
The electric tool further include:
Starter has the starting state and closed state that can mutually switch；The starter is for controlling the control
Whether device makes the power supply device stop powering to the motor when the rotational parameters reach preset parameter value；
When the starter is in the starting state, the control device can reach described default in the rotational parameters
The power supply device is set to stop powering to the motor when parameter value, when the starter is in the closed state, institute
State control of the control device stopping to the power supply device or the motor；Wherein, the starter can be described defeated
The starting state is in when shaft inverts or when being switched by user.
9. electric tool according to claim 8, it is characterised in that:
The detection device includes:
O-ring, installation to the work head；
Magnetic part, for generating magnetic signal；
Hall element can sense magnetic number that the magnetic part generates；
Wherein, at least partially embedded O-ring of the magnetic part, the relatively described shell position of the Hall element are fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511030367.9A CN106926179B (en) | 2015-12-31 | 2015-12-31 | Electric tool |
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| CN201511030367.9A CN106926179B (en) | 2015-12-31 | 2015-12-31 | Electric tool |
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| CN106926179A CN106926179A (en) | 2017-07-07 |
| CN106926179B true CN106926179B (en) | 2019-09-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111890286A (en) * | 2020-07-17 | 2020-11-06 | 周巧美 | Electric wrench |
| CN113524098A (en) * | 2021-07-28 | 2021-10-22 | 江苏东成工具科技有限公司 | Sleeve assembly and electric tool |
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| DE102010030098A1 (en) * | 2010-06-15 | 2011-12-15 | Hilti Aktiengesellschaft | driving- |
| EP2505316A3 (en) * | 2011-03-30 | 2014-04-23 | HILTI Aktiengesellschaft | Control method and hand tool machine |
| CN104723290B (en) * | 2015-01-27 | 2017-04-12 | 宁波汉浦工具有限公司 | Control device and control method for torsion output of electric tool |
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| CN1343158A (en) * | 1999-03-16 | 2002-04-03 | 株式会社空研 | Reading method of screw rotation angle of hand-held impact wrench, hand-vibration detection method, tighteming evaluation method and control method of hand-held power screw loosensing tool |
| JP4875520B2 (en) * | 2007-03-09 | 2012-02-15 | パナソニック電工株式会社 | Rotary tool |
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |