CN202952203U - Electronic torque adjusting device - Google Patents
Electronic torque adjusting device Download PDFInfo
- Publication number
- CN202952203U CN202952203U CN2012205176567U CN201220517656U CN202952203U CN 202952203 U CN202952203 U CN 202952203U CN 2012205176567 U CN2012205176567 U CN 2012205176567U CN 201220517656 U CN201220517656 U CN 201220517656U CN 202952203 U CN202952203 U CN 202952203U
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- Control Of Electric Motors In General (AREA)
Abstract
The utility model relates to an electronic torque adjusting device and belongs to the technical field of motor-driven tools. The device comprises a controllable rheostat, a control circuit containing a central processing unit (CPU) and a motor for outputting torque. The signal output end of the controllable rheostat is connected with the detection input end of the CPU in the control circuit, and the control output end of the CPU is connected with the controlled end of the motor through a driving circuit. Therefore, the CPU can output corresponding rotating speed control signals by adjusting output resistance by means of a control member in linkage with the rheostat, output torque of the motor is changed through the driving circuit to achieve the aim of adjusting torque, and the electronic torque adjusting device is compact in structure and convenient to control.
Description
Technical field
The utility model relates to a kind of torque adjusting device, and especially a kind of electronic torque adjusting device belongs to the electric tool technical field.
Background technology
In order to satisfy the operation of twisting screw and so on, electric tool has increased the torque adjustment function on original rotating regulation and control, rotational speed regulation function basis.Its concrete structure can be the United States Patent (USP) of US7201235B2, US6142242 referring to application number.
The torque adjustment of this type of existing electric tool (for example electric hand drill) all needs by the regulating spring pretension, changes the limit of skidding of slip gear, with the moment of torsion of control transmission.Realize owing to rely on frame for movement fully, therefore not only have complex structure, bulky shortcoming, and need two hands screw respectively spring compression means during operation, very inconvenient.
Summary of the invention
The purpose of this utility model is: for the problem that above-mentioned prior art exists, propose a kind of designs simplification, easy to operate electronic torque adjusting device.
In order to reach above purpose, electronic torque adjusting device of the present utility model comprises can control the variable resistance device, contain the control circuit of CPU and the motor of output torque, the detection input of CPU in the signal output part connection control circuit of described variohm spare, the control output end of described CPU connects the controlled end of motor by drive circuit.
Like this, if by with variable resistance device interlock control its resistance value of component for adjusting, CPU is exportable corresponding speed controling signal, changes output torque by the drive circuit motor, thereby reaches the purpose of torque adjustment, its compact conformation is controlled conveniently.
It is also to comprise the keying signal device, the judgement input of the described CPU of output termination of described keying signal device that the utility model further improves.Therefore can make CPU be in permanent moment of torsion output or the adjustable output state of moment of torsion according to keying signal, make the adaptability of electric tool stronger.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is torque adjustment structure of rings schematic diagram among Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the circuit theory diagrams of Fig. 1 embodiment.
The specific embodiment
Embodiment one
Present embodiment is a kind of electric hand drill with electronic torque adjusting device, the basic structure of this electric hand drill is same as the prior art, comprise be installed in output torque in the housing top motor 1 and battery 2 and the switch 3 that is placed in housing lever position, the output 4 of the front end of housing for being connected by the transmission mechanism motor, the output outside be equipped with can screw revolve cup 5, torque adjustment ring 6 is equipped with in lever top.The concrete structure of this torque adjustment ring as shown in Figure 2, its annular body both sides have toggle 6-1, the bottom of exposing housing and have constraint slide rheostat tuning knob 6-4(referring to Fig. 3) skewed slot 6-2, an end have the end-tooth 6-3 that produces the fork shift sense.A pair of photoelectric tube 6-5 as the keying signal device is settled on switch 3 tops, the rear end of revolving cup 5 extend between photoelectric tube 6-5, block arm 5-1(referring to Fig. 3).
The control circuit of present embodiment comprises the variable resistance device that can control by stirring the torque adjustment ring as shown in Figure 4---slide rheostat R41, the control circuit that contains CPU (PIC16F616) U3 and the motor M of output torque.Detection input 3 pin of CPU in the signal output part connection control circuit of variohm spare R41, control output end 5 pin of this CPU connect the controlled end of motor M by the drive circuit that two triode Q15, Q9 and pattern pipe Q12 consist of.Export judgement input 1 pin of termination CPU as photoelectric tube IC2A, the IC2B of keying signal device.
Revolve cup when rotation and make photoelectric tube IC2A, when IC2B is in off state, the control of CPU shielding torque adjustment, the torque adjustment ring is inoperative, motor M export with permanent moment of torsion, electric hand drill is for drilling operation.That photoelectric tube IC2A, IC2B are in is logical when opening state when cup is revolved in rotation, and CPU opens torque adjustment control, after the torque adjustment ring changes the resistance of slide rheostat, CPU is according to input signal, export corresponding pwm signal, and amplify through drive circuit, the output torque of regulation and control motor M.R18 among Fig. 4 is the output current sampling resistor, and comparator U2B and peripheral devices thereof consist of current foldback circuit, can when output current surpasses threshold value, close output pwm signal by CPU.
Facts have proved that after the technical scheme of employing present embodiment, the electric hand drill volume obviously dwindles, only need one-handed performance can regulate moment of torsion, very convenient, and safe and reliable.
Claims (6)
1. electronic torque adjusting device, it is characterized in that: comprise and to control the variable resistance device, contain the control circuit of CPU and the motor of output torque, the detection input of CPU in the signal output part connection control circuit of described variohm spare, the control output end of described CPU connects the controlled end of motor by drive circuit.
2. electronic torque adjusting device according to claim 1 is characterized in that: also comprise the keying signal device, the judgement input of the described CPU of output termination of described keying signal device.
3. electric hand drill with electronic torque adjusting device, the battery and the switch that comprise the motor that is installed in output torque in the housing top and be placed in housing lever position, the output of the front end of described housing for being connected by the transmission mechanism motor, the cup that revolves that can screw is equipped with in described output outside, it is characterized in that: also comprise the control circuit that to control the variable resistance device, contain CPU, the detection input of CPU in the signal output part connection control circuit of described variohm spare, the control output end of described CPU connects the controlled end of motor by drive circuit.
4. described electric hand drill with electronic torque adjusting device according to claim 3 is characterized in that: also comprise the keying signal device, the judgement input of the described CPU of output termination of described keying signal device.
5. described electric hand drill with electronic torque adjusting device according to claim 4, it is characterized in that: described variable resistance device is slide rheostat, the torque adjustment ring is equipped with in described lever top, and the annular body both sides of described torque adjustment ring have toggle, the bottom of exposing housing and have the end-tooth that the skewed slot, the end that retrain the slide rheostat tuning knob have the sense of generation fork shift.
6. described electric hand drill with electronic torque adjusting device according to claim 4, it is characterized in that: described keying signal device is photoelectric tube, the arm that blocks between photoelectric tube is extended in described rear end of revolving cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205176567U CN202952203U (en) | 2012-10-11 | 2012-10-11 | Electronic torque adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205176567U CN202952203U (en) | 2012-10-11 | 2012-10-11 | Electronic torque adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202952203U true CN202952203U (en) | 2013-05-29 |
Family
ID=48457797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205176567U Expired - Lifetime CN202952203U (en) | 2012-10-11 | 2012-10-11 | Electronic torque adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202952203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269437A (en) * | 2014-07-10 | 2016-01-27 | 南京久驰机电实业有限公司 | Handheld electric engraving and polishing machine |
| CN108274227A (en) * | 2018-03-05 | 2018-07-13 | 王聪 | Automatic take-up and its working method for bolt connecting elements |
-
2012
- 2012-10-11 CN CN2012205176567U patent/CN202952203U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269437A (en) * | 2014-07-10 | 2016-01-27 | 南京久驰机电实业有限公司 | Handheld electric engraving and polishing machine |
| CN108274227A (en) * | 2018-03-05 | 2018-07-13 | 王聪 | Automatic take-up and its working method for bolt connecting elements |
| CN108274227B (en) * | 2018-03-05 | 2023-09-26 | 王聪 | Automatic tightening device for bolt connecting member and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |