CN114131553A - Motor control device of handheld electric screwdriver - Google Patents
Motor control device of handheld electric screwdriver Download PDFInfo
- Publication number
- CN114131553A CN114131553A CN202111438426.1A CN202111438426A CN114131553A CN 114131553 A CN114131553 A CN 114131553A CN 202111438426 A CN202111438426 A CN 202111438426A CN 114131553 A CN114131553 A CN 114131553A
- Authority
- CN
- China
- Prior art keywords
- key
- electric screwdriver
- plate
- motor
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model belongs to the field of electric screwdriver equipment, and particularly relates to a motor control device of a handheld electric screwdriver, which comprises a main machine body, wherein a control seat is installed at the top end of the main machine body, a micro control unit is installed inside the control seat, a driving motor, a motor reduction box and a battery piece are installed inside the main machine body, the motor reduction box is connected with a screwdriver bit of the electric screwdriver, and an indicator lamp corresponding to the battery piece is installed on the control seat; different current protection values are set by the micro control unit to perform overcurrent protection, and the current protection value of the traditional hardware circuit is fixed and is more reliable and safer than that of the traditional hardware circuit; the full charge voltage and the maximum charging current of the battery device are set through the micro control unit, so that the charging circuit is safer than a traditional hardware circuit in charging; the charging prompt is carried out through the indicating lamp, and the working reliability of the motor control device and the whole electric screwdriver is improved.
Description
Technical Field
The utility model belongs to the field of electric screwdriver equipment, and particularly relates to a motor control device of a handheld electric screwdriver.
Background
In industrial production and furniture life, screwdrivers are used, such as assembling of workpieces and assembling of furniture, with the development of motor technology, motors become miniaturized, and people begin to use electric screwdrivers to replace traditional manual screwdrivers.
A chinese patent publication No. CN210406038U discloses a control box for an electric screwdriver, in which a controller of the electric screwdriver is assembled, the controller having a PCB board and a circuit element for realizing electrical performance of the controller; the control box comprises a box body, and the side walls of the box body are respectively provided with an air inlet and an air outlet; the main heat dissipation channel and the auxiliary heat dissipation channel are arranged in the box body, the control box has good heat dissipation performance, and the electric screwdriver controller is better in performance due to the good heat dissipation performance.
The electric screwdriver control box has the advantages that the electric screwdriver control box is not safe and reliable enough, and the problem is not effectively solved by the electric screwdriver control box.
Therefore, the utility model provides a motor control device of a handheld electric screwdriver.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a motor control device of a handheld electric screwdriver, which comprises a main machine body, wherein a control seat is installed at the top end of the main machine body, a micro control unit is installed inside the control seat, a driving motor, a motor reduction box and a battery piece are installed inside the main machine body, the motor reduction box is connected with a screwdriver bit of the electric screwdriver, an indicator lamp corresponding to the battery piece is installed on the control seat, and the battery piece provides power for the micro control unit, the driving motor, the motor reduction box and the indicator lamp. When the electric screwdriver works, the main machine body is arranged on a barrel body of the electric screwdriver, the micro control unit adopts a sixteen-bit micro control unit software structure, the software structure accords with European Union safety certification, different current protection values can be set through the micro control unit to perform overcurrent protection, and the current protection value of a traditional hardware circuit is fixed and unchanged, so that the electric screwdriver is more reliable and safer than the traditional hardware circuit; the full charge voltage and the maximum charging current of the battery device can be set through the micro control unit, the full charge voltage of the traditional hardware circuit structure is fixed, the maximum charging current is determined according to the output current of the charger used by a user, and the maximum charging current is not controlled, so that the charging circuit is safer than the traditional hardware circuit in charging; be provided with lock-rotor protection mechanism on the motor reducing gear box, battery spare is the battery structure, can charge and electric power storage, and the pilot lamp includes red light and green light, and the red light is bright during charging, and the green light is bright after being full of the electricity, the suggestion of charging, has improved the operational reliability of motor control device and electric screwdriver complete machine.
Preferably, the bottom of the main machine body is provided with an illuminating lamp, the control seat is provided with an adjusting knob and a display screen, and the adjusting knob and the display screen are electrically connected with the micro control unit. When the motor failure warning device works, the control device has a lighting function by arranging the lighting lamp, and when the motor fails, the motor failure warning device can display the failure warning through the display screen; the torque setting mode is entered by operating the adjusting knob, the high-grade torque and the low-grade torque of the driving motor are set, and the torque is adjusted to adapt to different working environments.
Preferably, install the button on the control seat, the button activity is pegged graft on the lateral wall of control seat, and the button is provided with the inserted bar including closing the machine key, just change the key and the reversal key on the button, and the depression bar is installed in the front of inserted bar, installs the support pressure spring on the inserted bar, and the inside slidable mounting of control seat has the switch board, is provided with two trigger pieces on the switch board, two trigger piece respectively with just change the key and the depression bar phase-match on the reversal key, the switch board is the vertical form with the button and distributes, and the inserted bar is located the back of switch board. When the switch works, the forward rotation key is pressed, the pressure rod on the forward rotation key is contacted with the trigger piece on the switch board, and the driving motor starts to rotate forward; pressing the reverse key, wherein a pressure lever of the reverse key is contacted with the other trigger piece on the switch board, and the driving motor starts to rotate reversely; the power-off key is pressed, the pressure lever is separated from the trigger sheet, the driving motor stops, and the motor controller of the electric screwdriver has a forward/reverse rotation control function and is more convenient to use.
Preferably, two first clamping grooves are formed in the left side of the switch board, the two first clamping grooves are aligned with the pressing rods on the forward rotating key and the backward rotating key respectively, a slope is arranged on the left side of the first clamping groove, an inner groove corresponding to the pressing rods is formed in the upper portion of the right side of the first clamping groove, the trigger piece is installed in the inner groove, and a reset spring is installed on the switch board. When the switch is in work, the forward rotation key is pressed, the compression rod on the forward rotation key moves to the right and is in contact with the clamping groove I on the right side of the forward rotation key, the compression rod extrudes the switch board to move upwards through the slope in the clamping groove I, when the compression rod is inserted into the inner groove of the clamping groove I, the switch board moves downwards under the action of the reset spring, at the moment, the compression rod is in contact with the trigger sheet in the inner groove, the driving motor starts to rotate forwards, and meanwhile, the inner groove can clamp the compression rod, so that the backward movement of the forward rotation key is avoided; when needs reversal, press the reversal key, the depression bar right side of reversal key moves and rather than the trigger piece contact on right side, push the switch board through the slope and move up, the back moves up on the switch board, the depression bar on the reversal key separates rather than the inner groovy on right side, the reversal key moves back, then, the depression bar of reversal key inserts inside the inner groovy on its right side, driving motor begins the reversal, has realized the function of automatic switch positive and negative rotation, and switches easy operation, convenient to use.
Preferably, a second clamping groove is formed in the left side of the switch board and is aligned with a pressing rod on the shutdown key, and a slope is arranged on the left side of the second clamping groove. During operation, because the draw-in groove does not set up the inner groovy in the second, consequently, press down the key of closing and loose hand after, the motion trail of the key of closing is for moving back and automatic re-setting to the right, the in-process that the key of closing moved to the right drives the switch board and shifts up for just change key and reversal key all separate with draw-in groove one, and driving motor stops rotatory, has realized no matter driving motor is corotation or reversal, the function that can both the automatic shutdown, simple structure, convenient to use.
Preferably, the outside of control seat rotates installs the start key, installs the switch piece that corresponds with the start key on the lateral wall of control seat, and the top fixed mounting of start key has a limiting plate, installs the extension spring that resets on the limiting plate, and the top of limiting plate is provided with the arc, and the spacing groove that corresponds with the arc is seted up to the bottom of switch plate. When the switch is in work, in an initial state, the starting key is staggered with the switch sheet under the action of the reset tension spring, and the driving motor is not electrified; in the process of using the electric screwdriver, the start key is pressed through the fingers, so that the start key is contacted with the switch piece, the driving motor starts to be electrified, the start key is extruded by the fingers and then drives the limiting plate to rotate, the limiting plate is inserted into the limiting groove, the switch plate is fixedly clamped, the problem of mistaken touch caused by the fact that the keys are touched by the body and other parts of a worker when the worker holds the electric screwdriver to assemble, disassemble and assemble the screw and twist the body for observation is solved, and the reliability in the using process is improved.
Preferably, the bounding wall is installed at the top of control seat, is provided with the iron sheet on the bounding wall, and the inside rotation of bounding wall is installed and is dialled board and carousel, and the outside of carousel is provided with the board that hits the iron sheet that hits, and fixed mounting has the gear on the carousel, and the gear is connected with dialling the board meshing, dials and is provided with the arc tooth section of meshing mutually with the gear on the board. The during operation, dial the motion of board through key control, the button is pressed the time and is driven to dial the board rotatory, it drives the carousel rotation to dial the board through the gear, make and hit the board and constantly strike the iron sheet and make sound, remind the staff button to have been pressed, improved the staff and pressed the button or touched the button by mistake after, because of feeling not good, under the condition that does not go to turn round the head and look over, the problem whether can't accurately judge the button pressed, in addition, through setting up the gear, according to the driven amplification of meshing, can promote the rotational speed of carousel and board that hits, the warning sound effect that further improves and send, the device reminds the method of differentiateing through setting up sound, it is more convenient and reliable to use.
Preferably, the striking plates are uniformly distributed on the outer side of the rotating disc, and a gap is reserved between every two adjacent striking plates. When the rotary disc rotates, the rotary disc can drive the collision plate to intermittently collide with the iron sheet, continuous and intensive warning sounds are emitted, and the warning effect is better.
Preferably, the dial plate is provided with an extension plate extending to the outer side of the enclosing plate, the top end of the switch plate is provided with a one-way plate corresponding to the extension plate, and the one-way plate is of a one-way rotating structure. The during operation can drive the switch board after pressing the button and shift up, and the back is shifted on the switch board, moves through the one-way board and dials the board rotation, dials the board rotation back and makes the iron sheet send warning sound by the striking, has realized that the button is pressed the back, sends the function of warning sound automatically, need not additionally to set up electronic detection mechanism and electronic warning mechanism, simple structure, reduce cost, convenient to use.
The utility model has the following beneficial effects:
1. according to the motor control device of the handheld electric screwdriver, different current protection values are set through the micro control unit for overcurrent protection, and the current protection value of a traditional hardware circuit is fixed and is more reliable and safer than that of the traditional hardware circuit; the full charge voltage and the maximum charging current of the battery device are set through the micro control unit, so that the charging circuit is safer than a traditional hardware circuit in charging; the charging prompt is carried out through the indicating lamp, and the working safety and reliability of the motor control device and the whole electric screwdriver are improved.
2. According to the motor control device of the handheld electric screwdriver, the function of automatically switching forward and reverse rotation is achieved through the arrangement of the keys and the switch board, switching is rapid, operation is simple, use is convenient, the problem of mistaken touch caused by the keys is solved through the arrangement of the limiting plate, the switch board is driven to move after the keys are extruded, the switch board drives the collision plate to collide the iron sheet through the one-way plate and the shifting plate to give out warning sound, and the problem that whether the keys are pressed or not cannot be accurately judged under the condition that a twisting head is not removed to check due to poor hand feeling after the keys are pressed or mistakenly touched by workers is solved.
Drawings
The utility model will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a sectional view of the internal structure of the control seat of the present invention;
FIG. 4 is an enlarged view of the connection structure of the key and the switch board according to the present invention;
FIG. 5 is a perspective view of the key and switch plate of the present invention;
FIG. 6 is a schematic view of the connection structure of the dial plate and the one-way plate according to the present invention.
In the figure: 1. a main body; 101. an illuminating lamp; 102. a screwdriver bit; 2. a control seat; 201. adjusting a knob; 202. a display screen; 3. a micro control unit; 4. a drive motor; 5. a motor reduction box; 6. a battery piece; 7. pressing a key; 71. a shutdown key; 72. a forward rotation key; 73. a reverse key; 8. an indicator light; 9. a power-on key; 10. inserting a rod; 11. a pressure lever; 12. a switch plate; 13. a first clamping groove; 131. a trigger piece; 14. a second clamping groove; 15. a limiting plate; 16. a limiting groove; 17. enclosing plates; 18. dialing a plate; 19. iron sheets; 20. a turntable; 21. a striking plate; 22. a gear; 23. a clockwork spring assembly; 24. a one-way plate.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
Example one
As shown in fig. 1 to 2, a motor control device for a handheld electric screwdriver according to an embodiment of the present invention includes a main body 1, a control base 2 is installed at a top end of the main body 1, a micro control unit 3 is installed inside the control base 2, a driving motor 4, a motor reduction box 5 and a battery piece 6 are installed inside the main body 1, the motor reduction box 5 is connected with a screwdriver tip 102 of the electric screwdriver, an indicator light 8 corresponding to the battery piece 6 is installed on the control base 2, and the battery piece 6 provides a power supply for the micro control unit 3, the driving motor 4, the motor reduction box 5 and the indicator light 8. When the electric screwdriver works, the main machine body 1 is installed on a barrel body of the electric screwdriver, the micro control unit 3 adopts a sixteen-bit micro control unit software structure, the software structure accords with European Union safety certification, different current protection values can be set through the micro control unit 3 to carry out overcurrent protection, and the current protection value of a traditional hardware circuit is fixed and unchanged, so that the electric screwdriver is more reliable and safer than the traditional hardware circuit; the full charge voltage and the maximum charging current of the battery part 6 can be set through the micro control unit 3, the full charge voltage of the traditional hardware circuit structure is fixed, the maximum charging current is determined according to the output current of the charger used by a user, and the maximum charging current is not controlled, so that the charging is safer and more reliable than the charging of the traditional hardware circuit; be provided with locked-rotor protection mechanism on the motor reducing gear box 5, battery spare 6 is the battery structure, can charge and the electric power storage, and pilot lamp 8 includes red light and green light, and the red light is bright during charge, and the green light is bright after being full of the electricity, the suggestion of charging, has improved the work fail safe nature of motor control device and electric screwdriver complete machine.
As shown in fig. 1 to 2, the bottom end of the main body 1 is provided with an illuminating lamp 101, the control base 2 is provided with an adjusting knob 201 and a display screen 202, and the adjusting knob 201 and the display screen 202 are electrically connected with the micro control unit 3. When the motor control device works, the illuminating lamp 101 is arranged, the control device has an illuminating function, and when the motor fails, the motor control device can display the failure through the display screen 202 to prompt the failure; the torque setting mode is entered by operating the adjusting knob 201, and two torques of high-grade and low-grade of the driving motor 4 are set to adjust the torque, so that the device is suitable for different working environments.
As shown in fig. 2 to 4, a key 7 is installed on the control base 2, the key 7 is movably inserted into a side wall of the control base 2, the key 7 includes a shutdown key 71, a forward rotation key 72 and a reverse rotation key 73, an insertion rod 10 is installed on the key 7, a pressure rod 11 is installed on the front surface of the insertion rod 10, a supporting pressure spring is installed on the insertion rod 10, a switch board 12 is installed inside the control base 2 in a sliding manner, two triggering pieces 131 are arranged on the switch board 12, the two triggering pieces 131 are respectively matched with the pressure rods 11 on the forward rotation key 72 and the reverse rotation key 73, the switch board 12 and the key 7 are vertically distributed, and the insertion rod 10 is located on the back surface of the switch board 12. When the switch works, the forward rotation key 72 is pressed, the pressure rod 11 on the forward rotation key 72 is contacted with the trigger piece 131 on the switch board 12, and the driving motor 4 starts to rotate forwards; when the reverse key 73 is pressed, the pressure lever 11 of the reverse key 73 is contacted with the other trigger piece 131 on the switch board 12, and the driving motor 4 starts to rotate reversely; when the shutdown key 71 is pressed, the pressure lever 11 is separated from the trigger piece 131, the driving motor 4 stops, and the motor controller of the electric screwdriver has a forward/reverse rotation control function and is more convenient to use.
As shown in fig. 3 to 4, two first clamping grooves 13 are formed in the left side of the switch board 12, the two first clamping grooves 13 are respectively aligned with the pressing rods 11 on the forward rotation key 72 and the reverse rotation key 73, a slope is formed in the left side of the first clamping grooves 13, an inner groove corresponding to the pressing rod 11 is formed in the upper portion of the right side of the first clamping grooves 13, the trigger piece 131 is installed in the inner groove, and a return spring is installed on the switch board 12. When the switch board is in work, the forward rotation key 72 is pressed, the pressure rod 11 on the forward rotation key 72 moves to the right and is in contact with the first clamping groove 13 on the right side of the forward rotation key, the pressure rod 11 extrudes the switch board 12 to move upwards through a slope in the first clamping groove 13, when the pressure rod 11 is inserted into the inner groove of the first clamping groove 13, the switch board 12 moves downwards under the action of a return spring, at the moment, the pressure rod 11 is in contact with the trigger sheet 131 in the inner groove, the driving motor 4 starts to rotate forwards, and meanwhile, the inner groove can clamp the pressure rod 11 to prevent the forward rotation key 72 from moving backwards; when the reverse rotation is needed, the reverse rotation key 73 is pressed, the compression bar 11 of the reverse rotation key 73 moves to the right and is in contact with the trigger piece 131 on the right side of the reverse rotation key 73, the switch board 12 is extruded to move upwards through the slope, after the switch board 12 moves upwards, the compression bar 11 on the forward rotation key 72 is separated from the inner groove on the right side of the forward rotation key, the forward rotation key 72 moves backwards, then the compression bar 11 of the reverse rotation key 73 is inserted into the inner groove on the right side of the reverse rotation key, the driving motor 4 starts to rotate reversely, the function of automatically switching forward and reverse rotation is achieved, the switching is rapid, the operation is simple, and the use is convenient.
As shown in fig. 3 to 4, a second latching groove 14 is formed on the left side of the switch board 12, the second latching groove 14 is aligned with the pressing rod 11 on the shutdown key 71, and a slope is formed on the left side of the second latching groove 14. During operation, because the draw-in groove two 14 does not have the inner groovy, consequently, press down the key 71 of closing and loose hand after, the motion orbit of key 71 of closing is for moving back and automatic re-setting to the right, the in-process that the key 71 of closing moved to the right drives the switch board 12 and shifts up for positive rotation key 72 and reversal key 73 all separate with draw-in groove one 13, driving motor 4 stops to rotate, no matter driving motor 4 is corotation or reversal, the function that can both shut down automatically, moreover, the steam generator is simple in structure, high durability and convenient use.
As shown in fig. 2 to 3, the outside of the control seat 2 is rotated and is installed the start key 9, the switch sheet corresponding to the start key 9 is installed on the side wall of the control seat 2, the top end of the start key 9 is fixedly installed with a limiting plate 15, the limiting plate 15 is installed with a reset tension spring, the top end of the limiting plate 15 is provided with an arc-shaped plate, and the bottom of the switch plate 12 is provided with a limiting groove 16 corresponding to the arc-shaped plate. When the switch works, in an initial state, the starting-up key 9 is staggered with the switch sheet under the action of the reset tension spring, and the driving motor 4 is not electrified; in the process of using the electric screwdriver, the start key 9 is pressed through fingers, so that the start key 9 is in contact with the switch sheet, the driving motor 4 starts to be powered on, the start key 9 is extruded by the fingers and then drives the limiting plate 15 to rotate, the limiting plate 15 is inserted into the limiting groove 16, the switch board 12 is fixedly clamped, the problem of mistaken touch caused by the fact that the key 7 is touched by the body and other parts of a worker when the worker holds the electric screwdriver in a hand and turns the screw to observe while mounting and dismounting is solved, and the reliability in the using process is improved.
As shown in fig. 2 to 6, a surrounding plate 17 is mounted at the top of the control seat 2, an iron sheet 19 is arranged on the surrounding plate 17, a shifting plate 18 and a rotating disc 20 are rotatably mounted inside the surrounding plate 17, a striking plate 21 striking against the iron sheet 19 is arranged outside the rotating disc 20, a gear 22 is fixedly mounted on the rotating disc 20, the gear 22 is in meshed connection with the shifting plate 18, and an arc-shaped tooth section meshed with the gear 22 is arranged on the shifting plate 18. In the working process, the movement of the plate 18 is dialled through the control of the key 7, the key 7 is pressed to drive the plate 18 to rotate, the plate 18 is dialled to drive the rotary table 20 to rotate through the gear 22, make the striking plate 21 continuously strike the iron sheet 19 to make a sound, remind the staff that the key 7 has been pressed, the problem that whether the key 7 is pressed or the key 7 is touched by mistake by the staff is improved, because of feeling bad, under the condition that the head is not turned off to look over, the key 7 can not be accurately judged, in addition, through setting up the gear 22, according to the amplification effect of meshing transmission, the rotating speed of the rotary table 20 and the striking plate 21 can be improved, the warning sound effect is further improved, the device reminds the method of distinguishing through setting up sound, and is more convenient and reliable to use.
As shown in fig. 6, the striking plates 21 are uniformly distributed on the outer side of the turntable 20, and a gap is left between two adjacent striking plates 21. When the rotary disc 20 rotates, the striking plate 21 is driven to strike the iron sheet 19 intermittently, and continuous and intensive warning sounds are given, so that the warning effect is better.
As shown in fig. 6, an extension plate extending to the outside of the enclosing plate 17 is provided on the dial plate 18, a one-way plate 24 corresponding to the extension plate is mounted on the top end of the switch plate 12, and the one-way plate 24 is of a one-way rotation structure. The during operation can drive the switch board 12 and shift up after pressing button 7, and the back that shifts up on the switch board 12 drives through one-way plate 24 and dials 18 rotatoryly, dials 18 rotatory backs and makes iron sheet 19 send out the warning sound by the striking, has realized that the function of sending out the warning sound automatically after button 7 is pressed, need not additionally to set up electronic detection mechanism and electronic warning mechanism, simple structure, reduce cost, convenient to use.
Example two
As shown in fig. 6, a first comparative example, in which another embodiment of the present invention is: a clockwork spring assembly 23 is arranged on the shifting plate 18; in operation, the switch board 12 moves upward and the one-way board 24 moves upward. The drive is dialled the board 18 and is rotated, makes clockwork spring assembly 23 rotatory energy storage simultaneously, and after the switch board 12 descends, clockwork spring assembly 23 release energy, and the drive is dialled board 18 and is revolved fast, consequently, at the in-process that switch board 12 reciprocated, dials the rotational speed of board 18 and is different, and the speed that the board 21 striking iron sheet 19 is collided in the drive is different, and the warning sound of sending also can produce the change, has the warning sound that changes through the setting, can further improve warning effect.
The working principle is as follows:
the main machine body 1 is installed on a barrel body of the electric screwdriver, the micro control unit 3 adopts a sixteen-bit micro control unit software structure, the software structure accords with European Union safety certification, different current protection values can be set through the micro control unit 3 to perform overcurrent protection, and the current protection value of a traditional hardware circuit is fixed and unchanged, so that the main machine body is more reliable and safer than the traditional hardware circuit; the full charge voltage and the maximum charging current of the battery part 6 can be set through the micro control unit 3, the full charge voltage of the traditional hardware circuit structure is fixed, the maximum charging current is determined according to the output current of the charger used by a user, and the maximum charging current is not controlled, so that the charging circuit is safer than the traditional hardware circuit in charging; be provided with locked-rotor protection mechanism on the motor reducing gear box 5, battery spare 6 is the battery structure, can charge and the electric power storage, and pilot lamp 8 includes red light and green light, and the red light is bright during charge, and the green light is bright after being full of the electricity, the suggestion of charging, has improved the operational reliability of motor control device and electric screwdriver complete machine.
By arranging the illuminating lamp 101, the control device has an illuminating function, and when the motor fails, the motor can be displayed through the display screen 202 to prompt the failure; the torque setting mode is entered by operating the adjusting knob 201, and two torques of high-grade and low-grade of the driving motor 4 are set to adjust the torque, so that the device is suitable for different working environments.
When the forward rotation key 72 is pressed, the pressure lever 11 on the forward rotation key 72 is contacted with the trigger piece 131 on the switch board 12, and the driving motor 4 starts to rotate forward; when the reverse key 73 is pressed, the pressure lever 11 of the reverse key 73 is contacted with the other trigger piece 131 on the switch board 12, and the driving motor 4 starts to rotate reversely; when the shutdown key 71 is pressed, the pressure lever 11 is separated from the trigger piece 131, the driving motor 4 stops, and the motor controller of the electric screwdriver has a forward/reverse rotation control function and is more convenient to use.
The positive rotation key 72 is pressed, the pressure rod 11 on the positive rotation key 72 moves to the right and is in contact with the first clamping groove 13 on the right side of the positive rotation key, the pressure rod 11 extrudes the switch board 12 to move upwards through a slope in the first clamping groove 13, when the pressure rod 11 is inserted into the inner groove of the first clamping groove 13, the switch board 12 moves downwards under the action of a return spring, at the moment, the pressure rod 11 is in contact with the trigger piece 131 in the inner groove, the driving motor 4 starts to rotate forwards, and meanwhile, the inner groove can clamp the pressure rod 11 to prevent the positive rotation key 72 from moving backwards; when the reverse rotation is needed, the reverse rotation key 73 is pressed, the compression bar 11 of the reverse rotation key 73 moves to the right and is in contact with the trigger piece 131 on the right side of the reverse rotation key 73, the switch board 12 is extruded to move upwards through the slope, after the switch board 12 moves upwards, the compression bar 11 on the forward rotation key 72 is separated from the inner groove on the right side of the forward rotation key, the forward rotation key 72 moves backwards, then the compression bar 11 of the reverse rotation key 73 is inserted into the inner groove on the right side of the reverse rotation key, the driving motor 4 starts to rotate reversely, the function of automatically switching forward and reverse rotation is achieved, the switching is rapid, the operation is simple, and the use is convenient.
Because no inner groove is arranged in the second clamping groove 14, after the shutdown key 71 is pressed down and hands are released, the motion track of the shutdown key 71 is moved to the right and automatically reset, and in the process of moving the shutdown key 71 to the right, the switch board 12 is driven to move upwards, so that the forward rotation key 72 and the reverse rotation key 73 are separated from the first clamping groove 13, the driving motor 4 stops rotating, the function of automatic shutdown no matter whether the driving motor 4 rotates forwards or reversely is realized, the structure is simple, and the use is convenient.
In an initial state, the starting-up key 9 is staggered with the switch sheet under the action of the reset tension spring, and the driving motor 4 is not electrified; in the process of using the electric screwdriver, the start key 9 is pressed through fingers, so that the start key 9 is in contact with the switch sheet, the driving motor 4 starts to be powered on, the start key 9 is extruded by the fingers and then drives the limiting plate 15 to rotate, the limiting plate 15 is inserted into the limiting groove 16, the switch board 12 is fixedly clamped, the problem of mistaken touch caused by the fact that the key 7 is touched by the body and other parts of a worker when the worker holds the electric screwdriver in a hand and turns the screw to observe while mounting and dismounting is solved, and the reliability in the using process is improved.
The motion of dialling board 18 is dialled in the control through button 7, it is rotatory to drive when button 7 is pressed dial board 18, it is rotatory to dial board 18 to drive carousel 20 through gear 22, make and hit board 21 and constantly strike iron sheet 19 and make a sound, remind staff's button 7 to have been pressed, improved the staff and pressing button 7 or the mistake and touched the button 7 after, because of feeling not good, under the condition that the head was looked over not going to twist, the problem whether unable accurate judgement button 7 was pressed, in addition, through setting up gear 22, according to the driven amplification effect of meshing, can promote carousel 20 and the rotational speed that hits board 21, the warning sound effect who sends further improves, the device reminds the method of distinguishing through setting up sound, it is more convenient and reliable to use.
After the rotary disc 20 rotates, the striking plate 21 is driven to strike the iron sheet 19 intermittently, and continuous intensive warning sounds are given out, so that the warning effect is better.
Can drive the switch board 12 after pressing button 7 and shift up, the back that shifts up on the switch board 12, it is rotatory to dial 18 boards through the drive of one-way plate 24, dials 18 rotatory backs and makes iron sheet 19 send out the warning sound by the striking, has realized that the back is pressed at button 7, the automatic function of sending out the warning sound need not additionally to set up electronic detection mechanism and electronic warning mechanism, simple structure, reduce cost, convenient to use.
After the switch board 12 moves up, the one-way board 24. The drive is dialled the board 18 and is rotated, makes clockwork spring assembly 23 rotatory energy storage simultaneously, and after the switch board 12 descends, clockwork spring assembly 23 release energy, and the drive is dialled board 18 and is revolved fast, consequently, at the in-process that switch board 12 reciprocated, dials the rotational speed of board 18 and is different, and the speed that the board 21 striking iron sheet 19 is collided in the drive is different, and the warning sound of sending also can produce the change, has the warning sound that changes through the setting, can further improve warning effect.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a hand-held type electric screwdriver motor control device which characterized in that: including the host computer body (1), control seat (2) are installed on the top of the host computer body (1), the internally mounted of control seat (2) has little the control unit (3), the internally mounted of the host computer body (1) has driving motor (4), motor reducing gear box (5) and battery spare (6), motor reducing gear box (5) are chewed (102) with electric screwdriver's batch and are connected, install pilot lamp (8) that correspond with battery spare (6) on control seat (2), battery spare (6) are little the control unit (3), driving motor (4), motor reducing gear box (5) and pilot lamp (8) provide the power.
2. The motor control device of a hand-held electric screwdriver as claimed in claim 1, wherein: the illuminating lamp (101) is installed to the bottom of the host computer body (1), is provided with adjust knob (201) and display screen (202) on control seat (2), and adjust knob (201) and display screen (202) are connected with little the control unit (3) electricity.
3. The motor control device of a hand-held electric screwdriver as claimed in claim 2, wherein: the novel multifunctional key is characterized in that a key (7) is installed on the control seat (2), the key (7) is movably inserted into the side wall of the control seat (2), the key (7) comprises a shutdown key (71), a forward rotation key (72) and a reverse rotation key (73), an insertion rod (10) is arranged on the key (7), a pressure rod (11) is installed on the front face of the insertion rod (10), a supporting pressure spring is installed on the insertion rod (10), a switch board (12) is installed inside the control seat (2) in a sliding mode, two triggering pieces (131) are arranged on the switch board (12), the two triggering pieces (131) are respectively matched with the pressure rod (11) on the forward rotation key (72) and the reverse rotation key (73), the switch board (12) and the key (7) are vertically distributed, and the insertion rod (10) is located on the back face of the switch board (12).
4. The motor control device of a hand-held electric screwdriver as claimed in claim 3, wherein: two draw-in grooves (13) have been seted up in the left side of cubical switchboard (12), and two draw-in grooves (13) align with depression bar (11) on forward rotating key (72) and reversal key (73) respectively, and the left side of draw-in groove (13) is provided with the slope, and the right side top of draw-in groove (13) is provided with the inner groovy that corresponds with depression bar (11), triggers piece (131) and installs in the inner groovy, installs reset spring on cubical switchboard (12).
5. The motor control device of a hand-held electric screwdriver as claimed in claim 4, wherein: a second clamping groove (14) is formed in the left side of the switch board (12), the second clamping groove (14) is aligned with the pressing rod (11) on the shutdown key (71), and a slope is arranged on the left side of the second clamping groove (14).
6. The motor control device of a hand-held electric screwdriver as claimed in claim 5, wherein: the outside of control seat (2) is rotated and is installed start key (9), installs the switch piece that corresponds with start key (9) on the lateral wall of control seat (2), and the top fixed mounting of start key (9) has limiting plate (15), installs the extension spring that resets on limiting plate (15), and the top of limiting plate (15) is provided with the arc, and spacing groove (16) that correspond with the arc are seted up to the bottom of switch plate (12).
7. The motor control device of a hand-held electric screwdriver as claimed in claim 6, wherein: a surrounding plate (17) is installed at the top of the control seat (2), an iron sheet (19) is arranged on the surrounding plate (17), a shifting plate (18) and a rotary table (20) are installed inside the surrounding plate (17) in a rotating mode, a collision plate (21) which collides with the iron sheet (19) is arranged on the outer side of the rotary table (20), a gear (22) is fixedly installed on the rotary table (20), the gear (22) is connected with the shifting plate (18) in a meshed mode, and an arc-shaped tooth section meshed with the gear (22) is arranged on the shifting plate (18).
8. The motor control device of a hand-held electric screwdriver as claimed in claim 7, wherein: the striking plates (21) are uniformly distributed on the outer side of the turntable (20), and a gap is reserved between every two adjacent striking plates (21).
9. The motor control device of a hand-held electric screwdriver as claimed in claim 8, wherein: an extension plate extending to the outer side of the enclosing plate (17) is arranged on the shifting plate (18), a one-way plate (24) corresponding to the extension plate is installed at the top end of the switch plate (12), and the one-way plate (24) is of a one-way rotating structure.
10. The motor control device of a hand-held electric screwdriver as claimed in claim 9, wherein: a clockwork spring assembly (23) is mounted on the shifting plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438426.1A CN114131553B (en) | 2021-11-30 | 2021-11-30 | Motor control device of handheld electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438426.1A CN114131553B (en) | 2021-11-30 | 2021-11-30 | Motor control device of handheld electric screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114131553A true CN114131553A (en) | 2022-03-04 |
| CN114131553B CN114131553B (en) | 2023-02-14 |
Family
ID=80389500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111438426.1A Active CN114131553B (en) | 2021-11-30 | 2021-11-30 | Motor control device of handheld electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114131553B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055782A (en) * | 2022-08-02 | 2022-09-16 | 寰电智控科技(广东)有限公司 | Precision welding machine capable of switching frequency |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653359A (en) * | 1985-10-11 | 1987-03-31 | Liao Hsieh Yuan | Structural improvement of electric screwdriver with respect to the torsion adjustment thereof |
| CN201478156U (en) * | 2009-09-08 | 2010-05-19 | 李富雄 | Switch with LED lamp inside button |
| CN202318155U (en) * | 2011-11-09 | 2012-07-11 | 宁波汉浦工具有限公司 | Electric screwdriver |
| CN203092437U (en) * | 2013-02-26 | 2013-07-31 | 深圳市吉美电子设备有限公司 | Electric screw driver capable of controlling torque force accurately |
| CN103433882A (en) * | 2013-09-02 | 2013-12-11 | 东莞市聚川装配自动化技术有限公司 | Current feedback type numerical control electric screw driver and control method |
| CN203680177U (en) * | 2013-12-31 | 2014-07-02 | 浙江工业大学 | Digital-display torque-adjustable electric screw driver |
| CN204976474U (en) * | 2015-07-29 | 2016-01-20 | 胡微 | Miniature electric screwdriver |
| CN106737345A (en) * | 2016-12-18 | 2017-05-31 | 滨州学院 | A kind of practical electric screw driver |
| CN206869425U (en) * | 2017-04-13 | 2018-01-12 | 湖南省神六机械制造有限公司 | Self-action internal screw device for screwing up is used in a kind of compressor station assembling |
| CN207373056U (en) * | 2017-09-11 | 2018-05-18 | 四川九洲电器集团有限责任公司 | A kind of multifunctional screw driver |
| CN108075398A (en) * | 2017-12-27 | 2018-05-25 | 安徽星博电气科技有限公司 | A kind of charged dismantling device of high-voltage board track bolt |
| CN108818384A (en) * | 2018-08-15 | 2018-11-16 | 广州市溢丰电子科技有限公司 | A kind of electric screw driver |
| CN209004183U (en) * | 2018-08-22 | 2019-06-21 | 贵阳市第四人民医院 | A kind of orthopaedics multifunctional screw driver |
| CN209774495U (en) * | 2019-01-10 | 2019-12-13 | 深圳市力科工器科技有限公司 | Intelligent counting type brushless electric screwdriver |
| CN209850783U (en) * | 2019-04-09 | 2019-12-27 | 宁波劲伟电子科技有限公司 | Electric screw driver |
| CN210406038U (en) * | 2019-08-06 | 2020-04-24 | 苏州杰锐思智能科技股份有限公司 | Electric screwdriver control box |
| CN211466181U (en) * | 2019-12-30 | 2020-09-11 | 广州恒宝环保回收科技有限公司 | Automatic screwdriver is used in equipment of multi-functional cell-phone |
| CN211967307U (en) * | 2020-04-01 | 2020-11-20 | 安徽飞歌智能科技有限公司 | Screwdriver for mounting indoor lamp |
| CN112338852A (en) * | 2020-11-03 | 2021-02-09 | 郑州小动电子科技有限公司 | Brushless electric screwdriver and automatic torque limiting control method thereof |
| CN212919152U (en) * | 2020-06-18 | 2021-04-09 | 宁波易太科电器有限公司 | Multifunctional electric screwdriver |
| CN213731461U (en) * | 2020-09-08 | 2021-07-20 | 米粒优合家居(上海)有限责任公司 | Electric screw driver |
-
2021
- 2021-11-30 CN CN202111438426.1A patent/CN114131553B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653359A (en) * | 1985-10-11 | 1987-03-31 | Liao Hsieh Yuan | Structural improvement of electric screwdriver with respect to the torsion adjustment thereof |
| CN201478156U (en) * | 2009-09-08 | 2010-05-19 | 李富雄 | Switch with LED lamp inside button |
| CN202318155U (en) * | 2011-11-09 | 2012-07-11 | 宁波汉浦工具有限公司 | Electric screwdriver |
| CN203092437U (en) * | 2013-02-26 | 2013-07-31 | 深圳市吉美电子设备有限公司 | Electric screw driver capable of controlling torque force accurately |
| CN103433882A (en) * | 2013-09-02 | 2013-12-11 | 东莞市聚川装配自动化技术有限公司 | Current feedback type numerical control electric screw driver and control method |
| CN203680177U (en) * | 2013-12-31 | 2014-07-02 | 浙江工业大学 | Digital-display torque-adjustable electric screw driver |
| CN204976474U (en) * | 2015-07-29 | 2016-01-20 | 胡微 | Miniature electric screwdriver |
| CN106737345A (en) * | 2016-12-18 | 2017-05-31 | 滨州学院 | A kind of practical electric screw driver |
| CN206869425U (en) * | 2017-04-13 | 2018-01-12 | 湖南省神六机械制造有限公司 | Self-action internal screw device for screwing up is used in a kind of compressor station assembling |
| CN207373056U (en) * | 2017-09-11 | 2018-05-18 | 四川九洲电器集团有限责任公司 | A kind of multifunctional screw driver |
| CN108075398A (en) * | 2017-12-27 | 2018-05-25 | 安徽星博电气科技有限公司 | A kind of charged dismantling device of high-voltage board track bolt |
| CN108818384A (en) * | 2018-08-15 | 2018-11-16 | 广州市溢丰电子科技有限公司 | A kind of electric screw driver |
| CN209004183U (en) * | 2018-08-22 | 2019-06-21 | 贵阳市第四人民医院 | A kind of orthopaedics multifunctional screw driver |
| CN209774495U (en) * | 2019-01-10 | 2019-12-13 | 深圳市力科工器科技有限公司 | Intelligent counting type brushless electric screwdriver |
| CN209850783U (en) * | 2019-04-09 | 2019-12-27 | 宁波劲伟电子科技有限公司 | Electric screw driver |
| CN210406038U (en) * | 2019-08-06 | 2020-04-24 | 苏州杰锐思智能科技股份有限公司 | Electric screwdriver control box |
| CN211466181U (en) * | 2019-12-30 | 2020-09-11 | 广州恒宝环保回收科技有限公司 | Automatic screwdriver is used in equipment of multi-functional cell-phone |
| CN211967307U (en) * | 2020-04-01 | 2020-11-20 | 安徽飞歌智能科技有限公司 | Screwdriver for mounting indoor lamp |
| CN212919152U (en) * | 2020-06-18 | 2021-04-09 | 宁波易太科电器有限公司 | Multifunctional electric screwdriver |
| CN213731461U (en) * | 2020-09-08 | 2021-07-20 | 米粒优合家居(上海)有限责任公司 | Electric screw driver |
| CN112338852A (en) * | 2020-11-03 | 2021-02-09 | 郑州小动电子科技有限公司 | Brushless electric screwdriver and automatic torque limiting control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055782A (en) * | 2022-08-02 | 2022-09-16 | 寰电智控科技(广东)有限公司 | Precision welding machine capable of switching frequency |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114131553B (en) | 2023-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114131553B (en) | Motor control device of handheld electric screwdriver | |
| CN109623736B (en) | Nail gun with reliable work | |
| WO2024093302A1 (en) | Nail gun maintenance system and method | |
| CN208284896U (en) | A kind of contact propulsive mechanism in drawer-type switch cabinet | |
| CN215772823U (en) | Quick-change multifunctional household tool | |
| CN202726870U (en) | Speed regulating and controlling device of electric tool | |
| CN212783325U (en) | Moulded case circuit breaker with electric operating device | |
| CN209928385U (en) | Assembling equipment for notebook computer keyboard | |
| CN209793643U (en) | Domestic multifunctional combined utensil | |
| CN213692915U (en) | Novel electric crank of high-voltage switch cabinet | |
| CN208543428U (en) | A kind of nailing gun | |
| CN111571509A (en) | Full-automatic-semi-automatic convertible electric nut riveting tool | |
| CN221262210U (en) | Six-key composite switch panel | |
| CN220825929U (en) | Multi-core screwdriver capable of automatically discharging cutter | |
| CN218083203U (en) | Bakelite mills workstation | |
| CN217562430U (en) | Limiting mechanism for three-station linear operating mechanism | |
| CN213395448U (en) | Electric heating appliance | |
| CN217548511U (en) | Fascia gun with charging function | |
| CN219842940U (en) | Circuit breaker | |
| CN216209589U (en) | Testing device for arc-drawing tool and arc-drawing detection device | |
| CN220420461U (en) | Shell remover for panel switch | |
| CN218730592U (en) | Handle switch structure for cabinet machine | |
| CN2821088Y (en) | Garage door machine | |
| CN214124932U (en) | Manual interlocking mechanism of double-power switching device | |
| CN210909839U (en) | Plum blossom contact assembly and disassembly tools |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |