CN112207770A

CN112207770A - Possesses electric tool who takes intelligent recognition detachable working head

Info

Publication number: CN112207770A
Application number: CN202011146077.1A
Authority: CN
Inventors: 罗小军
Original assignee: Ningbo Newport Tools Co ltd
Current assignee: Ningbo Newport Tools Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-12
Also published as: DE202020106963U1; WO2022083559A1

Abstract

The invention relates to an electric tool with a separable working head with intelligent identification, which comprises a driving handle, a motor, a limit part, a detachable and fixed assembly and disassembly part, a sensed element, a sensing element and a program control module, wherein the driving handle is provided with a power supply part and a controller, the motor is arranged in the driving handle, the controller is used for controlling the rotating speed, the working head is driven by the motor and detachably arranged on the driving handle in a state of being opposite to the motor, the assembly and disassembly part comprises the limit part connected with the working head and the motor and the detachable and fixed assembly and disassembly part, the sensed element is arranged in the assembly and disassembly part fixed with the working head, the sensing element is pre-provided with parameter information matched with the type of the working head, the parameter information is pre-arranged in the driving handle corresponding to the position of the sensed element and is used for sensing the pre-arranged. The working head and the driving handle are designed in a split mode, and the same driving handle can be adapted to different kinds of working heads.

Description

Possesses electric tool who takes intelligent recognition detachable working head

Technical Field

The invention relates to an electric tool, in particular to an electric tool with an intelligent recognition separable working head.

Background

The handheld electric tool is popular with consumers due to its high efficiency, and has become one of the most widely used tools in work and life, and can be classified into a handheld gun drill, a handheld impact wrench, a handheld electric impact shear, a handheld angle grinder, a handheld impact screwdriver, a handheld polishing machine, and the like according to the types.

The hand-held electric tool is a machine which is controlled by a controller to drive a motor to drive a working head to realize mechanical operation, at present, the working head and the motor are integrated into a whole after being integrated and fixed on a driving handle in design so as to be convenient for carrying to a working place and carrying by hand-held operation, but the structure has the following defects: firstly, abrasion is inevitable in the working process of a working head, the working head is easy to damage due to excessive abrasion under frequent use, the whole electric tool must be discarded after the working head is damaged due to the integrated design, a consumer has to buy the whole electric tool again, but at the moment, components such as a motor (particularly a brushless motor which has the characteristic of long service life) switch, a controller and the like in a driving handle are usually perfectly usable, and the components usually account for eighty percent of the total cost of the electric tool, which means that when the electric tool is scrapped, the electric tool is not well used, so that not only is the waste of materials caused, but also the cost expenditure of the consumer is increased; secondly, in the case where different types of electric tools are required due to diversification of work, the integrated design requires a consumer to prepare a plurality of types of electric tools related to work, and a large number of electric tools are carried to increase the burden on the consumer, and similarly, the purchase of a plurality of types of electric tools further increases the cost of the consumer.

Disclosure of Invention

In view of the above circumstances, and in order to overcome the defects of the prior art, the invention aims to provide an electric tool in which the working head and the driving handle are designed in a split manner, and the same driving handle can be adapted to different types of working heads.

In order to achieve the purpose, the technical solution of the invention is as follows:

the utility model provides a possess electric tool who takes intelligent recognition detachable working head, it includes:

a drive handle having a power supply section for power supply, a controller for instruction processing;

it still includes:

the motor is arranged in the driving handle and is controlled by the controller to rotate;

the working head is driven by the motor and is detachably arranged on the driving handle in a state of being opposite to the motor;

the assembly and disassembly component comprises a limiting part connected with the working head and the motor and an assembly and disassembly part which can be fixed in a detachable way, and the assembly and disassembly component fixed with the working head is arranged on the driving handle in a separable way;

the sensed element is arranged in the assembly and disassembly component fixed with the working head and is pre-provided with parameter information matched with the type of the working head;

and the sensing element is arranged in the driving handle opposite to the sensed element and used for sensing preset parameters in the sensed element and sending the parameters to the controller, and the controller performs corresponding program control on the motor.

Preferably, the assembling and disassembling component is composed of a front end retainer and a rear end retainer which are opposite, the ends of the front end retainer and the rear end retainer which are far away from each other are limiting parts and are respectively fixed with the working head and the driving handle, and the opposite ends of the front end retainer and the rear end retainer are assembling and disassembling parts and are detachably connected.

Preferably, the assembling and disassembling parts of the front end retainer and the rear end retainer are respectively provided with a plurality of bearing holes and mounting holes which can be in one-to-one correspondence, and each mounting hole is internally provided with a positioning pin which can be in plug-in fit with the bearing hole so as to limit the radial movement or relative rotation of the driving handle and the working head through the plug-in fit.

Preferably, the motor output shaft passes through the rear end retainer and is provided with a spline, the working head input end passes through the front end retainer along the same axis with the motor output end and is provided with a connector for accommodating the spline, and the connector is provided with connecting teeth capable of being meshed with the spline teeth so as to synchronously rotate when the spline rotates.

Preferably, a locking plate is sleeved on the input end of the working head on one side of the limiting part of the front end retainer, the locking plate can rotate around the input end of the working head as a fixed shaft, a plurality of arc-shaped grooves are formed in the peripheral wall of the locking plate, and a lock head is formed by parts between any two adjacent arc-shaped grooves.

Preferably, the bearing hole on the peripheral side of the locking plate is C-shaped, the opening end of the bearing hole faces the locking plate, an annular groove is formed in the peripheral wall of each positioning pin, and when the lock head rotates along with the locking plate, the lock head passes through the annular groove.

Preferably, a corresponding sliding groove is formed in the butt joint position of the working head and the front end retainer, and the lock head is accommodated by the sliding groove so as to prevent the lock head from rotating to be over-positioned.

Preferably, the lock head is provided with a shifting piece, and the operating end of the shifting piece is positioned outside the sliding groove.

Preferably, the mounting and dismounting portions of the front end holder and the rear end holder are respectively provided with a first slot and a second slot which are opposite to each other, and the sensed element and the sensing element are respectively mounted in the first slot and the second slot.

Preferably, the sensed element and the sensing element are a magnet and a hall element, respectively, or an infrared transmitter and an infrared receiver, respectively.

Preferably, the driving handle is provided with a switch for controlling the on-off of the circuit.

Preferably, the driving handle comprises a left shell and a right shell which are arranged in parallel and internally provided with through grooves, and the through grooves form a through cavity after the left shell and the right shell are fixed so as to accommodate the motor, the induction element and the controller into the through cavity.

Preferably, the through cavity comprises first opening ends positioned at the upper parts of the left shell and the right shell, and the first opening ends are closed by the limiting parts of the assembly and disassembly components.

Preferably, the through cavity further comprises a second open end located at the lower part of the left and right housings, the power supply part is located at the lower end of the driving handle, and the upper part of the power supply part is inserted into the second open end for fixing.

Preferably, the power supply part comprises a button which is arranged on the outer side surface and used for separating the power supply part from the driving handle, a clamping block is formed at one end of the button and penetrates through the inside of the power supply part to lead out of the upper part of the power supply part, opposite mounting plates are formed on the left shell and the right shell above the second opening end, and positioning holes which can be mutually communicated and used for the clamping block to penetrate through are formed in the butt joint positions of the two mounting plates.

Preferably, the power supply unit includes a battery pack.

Compared with the prior art, the invention has the advantages that:

realize quick separation and the installation of working head and drive handle by installing and removing the subassembly, when replacing the work head that damages or need not the work head that uses temporarily, the drive handle that the manufacturing cost is higher that has not reached life among the electric tool has been reserved, the kind that can the adaptation work head has greatly been richened simultaneously, provide more diversified selection for the user, need not to purchase again or prepare multiple whole electric tool that is used for the operation, the continuation of intact part among the electric tool of waiting to change has been guaranteed, avoid the waste of material, accord with the green theory of current social development, and user's cost is greatly reduced.

Meanwhile, the assembly and disassembly component has good fixing effect and can provide axial, radial and deflection-proof fixation for the working head and the driving handle provided with the motor.

The assembling and disassembling component of each working head is provided with a sensed element corresponding to the assembling and disassembling component, the sensed element is preset with parameter information matched with the type of the working head, the parameter information comprises information such as the type and the model of the corresponding working head, an induction element is installed in the assembling and disassembling component on the driving handle corresponding to the position of the sensed element and used for inducing preset parameters in the sensed element and sending the parameters to a controller, the controller judges parameter signals and determines a control program corresponding to the type of the working head contained in the parameter signals, and the determined control program controls the working voltage, the current and the rotating speed of a motor, so that the working heads of different types can normally run after being installed on the driving handle, the requirement of diversified operation is met, and the mechanical structure of the working head is effectively reduced.

Meanwhile, the safety of the driving handle in a state of being separated from the working head can be improved, the motor is prevented from idling under the condition that the working head is detached, the condition that the motor which is idling is touched unintentionally to cause damage is avoided, and the safety factor of the whole electric tool in use is greatly improved.

Drawings

FIG. 1 is a schematic view of the overall assembly structure of the present invention (taking a hand-held gun drill as an example);

FIG. 2 is a schematic structural view of the mount/dismount assembly of the present invention;

FIG. 3 is an enlarged schematic view of the receiving hole of the present invention;

FIG. 4 is an enlarged schematic view of the locking plate and the positioning pin of the present invention;

FIG. 5 is a schematic view of the assembly of the driving handle (first version) of the present invention;

FIG. 6 is an exploded view of the drive handle (first version) of the present invention;

FIG. 7 is an exploded view of the drive handle (second version) of the present invention;

FIG. 8 is an exploded view of a hand-held gun drill working head of the present invention mated with a drive handle (first version);

FIG. 9 is an exploded view of a hand-held impact screwdriver bit of the present invention mated with a drive handle (first version);

FIG. 10 is an exploded view of a hand-held impact wrench working head of the present invention mated to a drive handle (first version);

FIG. 11 is an exploded view of the hand-held polisher working head of the present invention mated with a drive handle (second version);

FIG. 12 is an exploded view of the hand held angle die machine tool head of the present invention mated with a drive handle (second version);

FIG. 13 is an exploded view of a hand held electric punch shear head of the present invention mated with a drive handle (second version);

as shown in the figure:

1 driving a handle; 1a first open end; 1b a second open end; 101 a left shell; 102 a right housing; 103 mounting the plate; 103a positioning hole; 2a power supply unit; a 201 button; a fixture block 201 a; 3, a controller; 4, a motor; 5, working heads; 6 assembling and disassembling the assembly; 6a limiting part; 6b an attaching and detaching portion; 601a front end retainer; 601a receiving hole; 601b a first slot; 602a rear end cage; 602a mounting hole; 602b a second slot; 7 a sensed element; 8 an inductive element; 9, positioning pins; 9a an annular groove; 10 splines; 11 a connector; 12 locking plates; 12a arc-shaped groove; 12b a lock head; 13 chute; 14, a shifting piece; 15 switch.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually arranged in when used, and are used for the convenience of description only, and do not indicate or imply that the orientations are required to have specific orientations and specific orientations, configurations and operations, and thus, the present invention is not to be construed as being limited.

It should be mentioned that the motor 4, the switch 15, the controller 3 and the power supply part 2 are all electrically connected, and the connection relationship is the disclosed technology, so that the description is not repeated;

in the following, two representative driving handles 1 are taken as examples, and the working heads are taken as examples of representative hand-held gun drills, hand-held impact screwdrivers, hand-held impact wrenches, hand-held polishing machines, hand-held angle molding machines and hand-held electric impact shears.

Example 1:

as shown in fig. 1, 2, and 5 to 13, an electric power tool having a detachable working head is mainly used when work cannot be performed due to damage of the working head 5 and the entire machine is to be replaced urgently, or when different kinds of electric power tools are required due to diversification of work.

It includes: a drive handle 1 having a power supply section 2 for power supply and a controller 3 for instruction processing on the drive handle 1;

the controller 3 comprises a single chip microcomputer which has the characteristics of high integration level, small size, good reliability, rich instructions and strong control capability, and can well assist the electric tool of the technical scheme to realize the following functions.

It still includes: the device comprises a motor 4, a working head 5, an assembling and disassembling component 6, a sensed component 7 and a sensing component 8, wherein the motor 4 and the sensing component 8 are both arranged in a driving handle 1, the working head 5 is arranged on the driving handle 1 in a state of being opposite to the motor 4 and is driven by the motor 4, the working head 5 is detachably connected with the driving handle 1, the assembling and disassembling component 6 is arranged in a separable way and comprises a limiting part 6a connected with the working head 5 and the motor 4 and a detachably fixed assembling and disassembling part 6b, a part of the assembling and disassembling component 6 is attached to the working head 5, the driving handle 1 is attached with another part of the assembling and disassembling component 6 which can be detachably fixed with the assembling and disassembling component 6 on the working head 5, so that the same driving handle 1 can be matched with different types of working heads 5, and the assembling and disassembling component 6 connected with the working head 5, through the separation of the fixed portion 6b of installing and removing, realize the detachable connection between working head 5 and motor 4, make the working head 5 of waiting to change independently take off from driving handle 1, when replacing the working head 5 that damages or need not the working head 5 that uses temporarily, retained among the electric tool reach the higher driving handle 1 of manufacturing cost of life, greatly enriched the kind that can adapt working head 5 simultaneously, provide more diversified selection for the user, need not to purchase again or prepare multiple whole electric tool that is used for the operation, guaranteed the continuous use of intact parts among the electric tool of waiting to change, avoid the waste of material, accord with the green theory of current social development, and greatly reduced user's cost expenditure.

Different working heads are respectively provided with a set of independent control programs (the control programs comprise the change control of working voltage, current, rotating speed and the like of the corresponding working heads 5) during operation, in order to ensure that each working head 5 can normally operate after replacement, the controller 3 controls the motor 4 in a program mode and then the motor 4 drives the working heads 5 to operate, specifically, a sensed element 8 corresponding to the sensed element 8 is arranged in an assembly and disassembly component 6 of each working head 5, the sensed element 8 is pre-provided with parameter information matched with the type of the working head 5, the parameter information comprises the type, the model and the like of the corresponding working head 5, a sensing element 9 is arranged in the assembly and disassembly component 6 on the driving handle 1 corresponding to the position of the sensed element 8 and is used for sensing preset parameters in the sensed element 8 and sending the parameters to the controller 3, the controller 3 judges the parameter signal, determines a control program corresponding to the type of the working head 5 contained in the parameter signal, and controls the working voltage, the current and the rotating speed of the motor 4 by the determined control program, so that the working heads 5 of different types can normally run after being installed on the driving handle 1, the requirements of operation diversification are met, and the mechanical structure of the working heads 5 is effectively simplified.

Meanwhile, under the condition that the working head 5 is detached, the sensing element 8 cannot sense the sensed element 7 and cannot send the parameters to the controller 3, and the motor 4 is always kept in a stop state when the controller 3 does not receive the parameters, so that the motor 4 is prevented from idling, the condition that the motor 4 which is idling is touched accidentally and is damaged is avoided, and the safety factor of the whole electric tool is greatly improved.

The assembly and disassembly unit 6 and the preferred structure thereof will be described in detail below, and the assembly and disassembly unit 6 in the following description is not only convenient and fast to disassemble, but also good in fixing effect, and can provide axial, radial and anti-deflection fixing for the working head 5 and the driving handle 1 provided with the motor 4.

The assembly and disassembly component 6 is composed of a front end retainer 601 and a rear end retainer 602 which are opposite, the ends of the front end retainer 601 and the rear end retainer 602 which are far away from each other are limiting parts 6a and are respectively fixed with the working head 5 and the driving handle 1, the opposite ends of the front end retainer 601 and the rear end retainer 602 are assembly and disassembly parts 6b and are detachably connected, after the front end retainer 601 and the rear end retainer 602 are fixed, the working head 5 and the motor 4 which are fixed with the front end retainer 601 and the rear end retainer 602 can be installed on the driving handle 1 in a relatively fixed state, and the working head 5 and the motor 4 are prevented from relatively moving due to external force.

As shown in fig. 6 to 13, in detail, a plurality of receiving holes 601a and mounting holes 602a which can be in one-to-one correspondence are respectively formed on the assembling and disassembling portion 6b of the front end holder 601 and the rear end holder 602, each mounting hole 602a is mounted with a positioning pin 9 which can be in plug-in fit with the receiving hole 601a, when the positioning pin 9 is inserted into the receiving hole 601a to realize the plug-in fit, the front end holder 601 and the rear end holder 602 can be radially fixed and can be prevented from relative rotation.

As shown in fig. 5 to 7, in order to make the input end of the working head 5 match with the output end of the motor 4 quickly when the working head 5 is installed, the output shaft of the motor 4 passes through the rear end retainer 602 and is provided with the spline 10, the input end of the working head 5 passes through the front end retainer 601 along the same axis with the output end of the motor 4 and is provided with the connector 11 for receiving the spline 10, the connector 11 is provided with connecting teeth capable of being engaged with the teeth of the spline 10, by this arrangement, when different kinds of working heads 5 are installed on the driving handle 1, the axis of the input end of the motor is always coincident with the axis of the output end of the motor 4, so that the spline 10 on the output end of the motor 4 can be accurately accommodated by the connector 11, the working head 5 does not need to be calibrated after being fixed, when the driving shaft of the motor 4 rotates, the spline 10 is driven to synchronously rotate, and then the spline 10 drives the connector 11 engaged with the spline and the working head 5 integrated with the connector 11 to rotate.

As shown in fig. 2, 8 to 13, further, a locking plate 12 is sleeved on the input end of the working head 5 on one side of the limiting portion 6a of the front end holder 601, the locking plate 12 can rotate around the input end of the working head 5 with a fixed axis, a plurality of arc-shaped grooves 12a are formed on the outer peripheral wall of the locking plate 12, and a locking head 12b is formed by a part between any two adjacent arc-shaped grooves 12 a.

As shown in fig. 3 to 5, further, the receiving hole 601a on the peripheral side of the locking plate 12 is C-shaped, part of the peripheral wall of the positioning pin 9 can be exposed from the C-shaped opening of the receiving hole 601a, the open end of the C-shaped receiving hole 601a faces the locking plate 12, an annular groove 9a is formed on the peripheral wall of each positioning pin 9, so that when the locking head 12b rotates with the locking plate 12, the locking head 12b can sequentially pass through the C-shaped receiving hole 601a and the annular groove 9a on the positioning pin 9, and when the locking head 12b rotates into the annular groove 9a, the locking plate 12 is stopped rotating, so that the locking head 12b and the annular groove 9a are in a butt-joint state, and at this time, the positioning pin 9, the rear end holder 602 on which the positioning pin 9 is mounted, and the driving handle 1 fixed to the rear end holder 602 cannot axially move, and at this time, the positioning pin 9a positioning function of the annular groove 9, the locking head 12b and the locking plate 12 can not axially move, the locking plate 12 is located between the working head 5 and the front end retainer 601, when the locking plate 12 can not axially move, the working head 5 and the front end retainer 601 can not axially move, so that when the locking head 12b and the annular groove 9a are located at a butt joint position, the working head 5 and the motor 4 in the driving handle 1 can be always kept in an axially relatively fixed state, when the working head 5 is required to be detached, only the locking plate 12 needs to be rotated, and the locking head 12b can be separated from the annular groove 9a of the positioning pin 9.

As shown in fig. 3, further, a corresponding sliding groove 13 is formed in a butt joint position of the working head 5 and the front end retainer 601, the lock head 12b is accommodated by the sliding groove 13 to prevent the lock head 12b from rotating over, when the lock head 12b rotates to one end of the sliding groove 13, the lock head 12b can be just clamped in the annular groove 9a of the positioning pin 9, and when the lock head 12b rotates to the other end of the sliding groove 13, the lock head 12b completely escapes from the annular groove 9a of the positioning pin 9, through the above arrangement, a user does not need to judge whether the lock head 12b rotates into or out of the annular groove 9a by feeling, but can directly rotate the lock head 12b between the butt joint position with the annular groove 9a and the butt joint position out of the annular groove 9a, so as to rapidly realize the relative fixing of the working head 5 and the motor 4 or the replacement of.

As shown in fig. 3, 5, 8 to 13, further, a shifting piece 14 is installed on the lock head 12b, the operating end of the shifting piece 14 is located outside the sliding groove 13, and through the above arrangement, the locking piece 12 is indirectly driven to rotate synchronously by rotating the shifting piece 14, so that the purpose of fixing the axes of the working head 5 and the driving handle 1 is achieved, and the trouble caused by inconvenience in rotation due to the small volume of the lock head 12b is avoided.

The disassembly process of the working head 5 is described through the assembly and disassembly component 6, firstly, the plectrum 14 is controlled to rotate, the lock head 12b is enabled to be completely separated from the annular groove 9a of the positioning pin 9, at the moment, the working head 5 can be moved along the axial direction, then, the bearing hole 601a on the front end retainer 601 is enabled to be separated from the positioning pin 9 on the rear end retainer 602, the working head 5 is enabled to be separated from the driving handle 1 along the axial direction, in the separation process, the spline 10 on the output end of the motor 4 is separated from the connector 11 on the input end of the working head 5, the disassembly is completed, the whole disassembly process is rapid and convenient, a large amount of time is saved for workers.

Further, the sensed element 7 and the sensing element 8 are a magnet and a hall element, respectively, or an infrared transmitter and an infrared receiver, respectively, but the sensed element 7 and the sensing element 8 in the present embodiment are not limited to the above two, and a known sensor and an element that can be sensed by a corresponding known sensor may be used.

Further, a switch 15 for controlling the on-off of the circuit is mounted on the driving handle 1.

Further, the power supply section 2 includes a battery pack.

Example 2:

as shown in fig. 5 to 13, in this embodiment, on the basis of the above embodiment 1, an optimized design is made, wherein the first slot 601b and the second slot 602b are respectively formed on the mounting and dismounting portion 6b of the front end holder 601 and the rear end holder 602, and the sensed element 7 and the sensing element 8 are respectively mounted in the first slot 601b and the second slot 602b, so that the sensed element 7 and the sensing element 8 can be always fixed at a position relatively fixed with the front end holder 601 and the rear end holder 602, thereby avoiding the situation that the sensing element 8 in the driving handle 1 cannot sense the sensing element 8 when the front end holder 601 is fixed on the driving handle 1 along with the working head 5.

Example 3:

as shown in fig. 6 and 7, this embodiment is based on the above embodiment 1, and is optimized in that the driving handle 1 includes a left housing 101 and a right housing 102 which are arranged side by side and have through slots formed therein, and the through slots form through cavities after the left housing 101 and the right housing 102 are fixed, so as to accommodate the motor 4, the inductive element 8, the switch 15 and the controller 3 into the through cavities.

Further, the through cavity includes a first opening end 1a at the upper portion of the left and

right housings

101 and 102, and the first opening end 1a is closed by a stopper portion 6a of the attaching and detaching member 6, so that the motor 4 is sealed at the upper end of the driving handle 1.

Further, the through cavity further includes a second opening end 1b located at the lower portion of the left casing 101 and the right casing 102, the power supply portion 2 is located at the lower end of the driving handle 1, and the upper portion thereof is inserted into the second opening end 1b for fixing.

Further, the power supply part 2 includes a button 201 installed on the outer side surface for separating the power supply part from the driving handle 1, a clamping block 201a is formed at one end of the button 201 and penetrates through the inside of the power supply part 2 to be led out to the upper part of the power supply part, opposite mounting plates 103 are formed on the left shell 101 and the right shell 102 above the second opening end 1b, positioning holes 103a which can be communicated with each other and are used for the clamping block 201a to pass through are formed in the butt joint positions of the two mounting plates 103, and when the clamping block 201a is clamped in the positioning holes 103a, the power supply part 2 can be fixed on the driving handle 1.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

1. The utility model provides a possess electric tool who takes intelligent recognition detachable working head, it includes:

a drive handle (1) having a power supply unit (2) for supplying electric power, and a controller (3) for command processing;

it is characterized in that it also comprises:

the motor (4) is arranged in the driving handle (1) and is controlled by the controller (3) in a rotating speed mode;

the working head (5) is driven by the motor (4) and is detachably arranged on the driving handle (1) in a state of being opposite to the motor (4);

the assembling and disassembling component (6) comprises a limiting part (6a) connected with the working head (5) and the motor (4) and an assembling and disassembling part (6b) which can be fixed in a detachable mode, and the assembling and disassembling component (6) fixed with the working head (5) is installed on the driving handle (1) in a separable mode;

the sensed element (7) is arranged in the assembling and disassembling component (6) fixed with the working head (5) and is pre-provided with parameter information matched with the type of the working head (5);

the sensing element (8) is arranged in the driving handle (1) opposite to the sensed element (7) and used for sensing preset parameters in the sensed element (7) and sending the parameters to the controller (3), and the controller (3) controls the motor (4) through a corresponding program.

2. The electric tool with the separable working head with the intelligent recognition function according to claim 1, wherein the assembly and disassembly assembly (6) is composed of a front end retainer (601) and a rear end retainer (602) which are arranged oppositely, the mutually distant ends of the front end retainer (601) and the rear end retainer (602) are limit parts (6a) and are respectively fixed with the working head (5) and the driving handle (1), and the opposite ends of the front end retainer (601) and the rear end retainer (602) are assembly and disassembly parts (6b) and are detachably connected.

3. The electric tool with the separable working head with the intelligent recognition function according to claim 3, wherein a plurality of receiving holes (601a) and mounting holes (602a) which can correspond to each other one by one are formed in the assembling and disassembling portion (6b) of the front end holder (601) and the rear end holder (602), and a positioning pin (9) which can be in plug-in fit with the receiving hole (601a) is installed in each mounting hole (602a) so as to limit the radial movement or the relative rotation of the driving handle (1) and the working head (5) through the plug-in fit.

4. The electric tool with the separable working head with the intelligent recognition function is characterized in that an output shaft of the motor (4) penetrates through the rear end retainer (602) and is provided with a spline (10), an input end of the working head (5) penetrates through the front end retainer (601) along the same axis with the output end of the motor (4) and is provided with a connector (11) used for containing the spline (10), and connecting teeth capable of being meshed with the teeth of the spline (10) are arranged on the connector (11) so as to synchronously rotate when the spline (10) rotates.

5. The electric tool with the intelligent recognition separable working head according to claim 3, wherein a locking plate (12) is sleeved on the input end of the working head (5) on one side of the limiting part (6a) of the front end holder (601), the locking plate (12) can rotate around the input end of the working head (5) in a fixed axis manner, a plurality of arc-shaped grooves (12a) are formed in the peripheral wall of the locking plate (12), and a locking head (12b) is formed by a part between any two adjacent arc-shaped grooves (12 a).

6. The electric tool with the separable working head with the intelligent recognition function according to claim 5, wherein the receiving hole (601a) on the periphery of the locking plate (12) is C-shaped, the opening end of the receiving hole faces the locking plate (12), an annular groove (9a) is formed in the peripheral wall of each positioning pin (9), and the locking head (12b) passes through the annular groove (9a) when rotating along with the locking plate (12).

7. The electric tool with the separable working head with the intelligent recognition function according to claim 6, wherein a corresponding sliding groove (13) is formed in a butt joint position of the working head (5) and the front end retainer (601), and the lock head (12b) is accommodated in the sliding groove (13) to prevent the lock head (12b) from rotating over.

8. The electric tool with the separable working head with the intelligent recognition function according to claim 7, wherein a poking piece (14) is mounted on the lock head (12b), and an operating end of the poking piece (14) is located outside the sliding groove (13).

9. The electric tool with the separable working head with the intelligent recognition function according to claim 2, wherein the first slot (601b) and the second slot (602b) are formed in the detachable portion (6b) of the front end holder (601) and the rear end holder (602) and face each other, and the sensed element (7) and the sensing element (8) are mounted in the first slot (601b) and the second slot (602b), respectively.

10. The electric tool with the separable working head with the intelligent recognition function according to claim 1, wherein the sensed element (7) and the sensing element (8) are respectively a magnet and a Hall element or respectively an infrared transmitter and an infrared receiver.

11. The electric tool with the separable working head with the intelligent recognition function is characterized in that a switch (15) for controlling the on-off of a circuit is mounted on the driving handle (1).

12. The electric tool with the separable working head with the intelligent recognition function is characterized in that the driving handle (1) comprises a left shell (101) and a right shell (102) which are arranged in parallel and internally provided with through grooves, and the through grooves form a through cavity after the left shell (101) and the right shell (102) are fixed, so that the motor (4), the induction element (8) and the controller (3) are accommodated in the through cavity.

13. The electric tool with the separable working head with the intelligent recognition function according to claim 12, wherein the through cavity comprises a first opening end (1a) located at the upper part of the left shell (101) and the upper part of the right shell (102), and the first opening end (1a) is closed by a limiting part (6a) of the assembly and disassembly component (6).

14. The electric tool with the separable working head with the intelligent recognition function according to claim 13, wherein the through cavity further comprises a second open end (1b) located at the lower part of the left shell (101) and the right shell (102), the power supply part (2) is located at the lower end of the driving handle (1), and the upper part of the power supply part is inserted into the second open end (1b) for fixation.

15. The electric tool with the separable working head with the intelligent recognition function according to claim 14, wherein the power supply part (2) comprises a button (201) installed on an outer side surface for separating the button from the driving handle (1), one end of the button (201) forms a fixture block (201a) and passes through the inside of the power supply part (2) to the upper part of the button, opposite mounting plates (103) are formed on the left shell (101) and the right shell (102) above the second opening end (1b), and positioning holes (103a) which can be communicated with each other and are used for the fixture block to pass through are formed in abutting positions of the two mounting plates (103).

16. The electric tool with the detachable working head with the intelligent recognition function as claimed in claim 1, wherein the power supply unit (2) comprises a battery pack.