CN221042574U - Electric putter that can pinpoint - Google Patents
Electric putter that can pinpoint Download PDFInfo
- Publication number
- CN221042574U CN221042574U CN202323034891.6U CN202323034891U CN221042574U CN 221042574 U CN221042574 U CN 221042574U CN 202323034891 U CN202323034891 U CN 202323034891U CN 221042574 U CN221042574 U CN 221042574U
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- Prior art keywords
- resistor
- transmission nut
- motor
- conductive sheet
- screw rod
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- 230000005540 biological transmission Effects 0.000 claims abstract description 38
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 230000033001 locomotion Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- YTBRNEUEFCNVHC-UHFFFAOYSA-N 4,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=C(Cl)C=C1 YTBRNEUEFCNVHC-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Abstract
The utility model discloses an electric push rod capable of being accurately positioned, which comprises a shell, a motor, a screw rod mechanism, a variable resistor, a wire and a PCB (printed circuit board), wherein the variable resistor comprises a resistor, an insulating mounting piece and a conducting strip; the conducting strip is fixedly arranged on the transmission nut; the two resistors are respectively arranged on the shell through insulating mounting pieces; the two resistors are separated by an insulating medium; each resistor is provided with a wire, and each wire is connected with the PCB board; the conducting strip presses on each resistor to be respectively attached to each resistor, so that the two resistors are electrically connected through the conducting strip. According to the utility model, the transmission nut drives the conductive sheet to move to change the resistance value of the resistance output, so that the position of the transmission nut can be accurately obtained.
Description
Technical Field
The utility model belongs to the field of electric actuators, and particularly relates to an electric push rod.
Background
The most broad definition for an actuator is: a driving device capable of providing linear or rotary motion, which uses a driving energy and operates under a control signal. The actuator uses a liquid, gas, electric or other energy source and converts it into a driving action by means of an electric motor, cylinder or other device.
The electric push rod is an electric driving device for converting the rotation motion of the motor into the linear reciprocating motion of the push rod, and can be used as an executing machine in various simple or complex process flows to realize remote control, centralized control or automatic control. The electric push rod is a screw rod mechanism driven by the motor, the rotary motion of the motor is changed into linear motion, and the drive nut is driven to linearly move by forward and reverse rotation of the motor and the push rod connected with the drive nut linearly moves.
Currently, for the displacement of the linear movement of the driving nut, it is generally obtained with an encoder connected to an electric motor. Conventionally used optical encoders and magnetic encoders have been popular choices in the motion control application market, and optical encoders consist of an LED light source (typically an infrared light source) and a photodetector, and in dusty and dirty environments such as industrial applications, contaminants can accumulate on the code wheel, thereby impeding the transmission of LED light to the optical sensor. The reliability and accuracy of the optical encoder is greatly affected by the possibility of contaminated code wheel resulting in discontinuous or complete loss of square wave. LEDs have a limited lifetime and eventually burn out, resulting in encoder failure. The magnetic encoder has advantages in terms of durability, vibration resistance and impact resistance compared to the optical encoder, however, electromagnetic interference generated by a motor (particularly, a stepping motor) greatly affects the magnetic encoder, and temperature variation also causes position drift, thereby affecting the measurement accuracy of the magnetic encoder.
Disclosure of utility model
Aiming at the defects or improvement demands of the prior art, the utility model provides the electric push rod capable of being accurately positioned, which is characterized in that the conducting strip is pressed on each resistor to be contacted with each resistor, and the conducting strip is driven to move by the transmission nut to change the resistance value output by the resistor, so that the position of the transmission nut can be accurately obtained, dirt on the resistor can be scraped off when the conducting strip moves, the influence of the dirt is avoided, the position is obtained through the change of the resistance value, and the resistor is far away from the motor and cannot be affected by electromagnetic interference of the motor.
In order to achieve the above object, according to the present utility model, there is provided an electric putter capable of being precisely positioned, including a casing, a motor, a screw mechanism, a variable resistor, a wire and a PCB board, the variable resistor including a resistor, an insulating mounting member and a conductive sheet, wherein:
The motor and the screw rod mechanism are respectively arranged on the shell, the screw rod mechanism comprises a screw rod and a transmission nut penetrating the screw rod, and an output shaft of the motor is connected with the screw rod and is used for driving the transmission nut to move along the axial direction of the screw rod;
the conducting strip is fixedly arranged on the transmission nut;
The two resistors are separated by an insulating medium, and each resistor is arranged on the shell through the insulating mounting piece;
each resistor is connected with one wire, and each wire is connected with the PCB board;
The conductive sheet is pressed on each resistor to be respectively attached to each resistor, so that the two resistors are electrically connected through the conductive sheet.
Preferably, the conductive sheet is a metal spring sheet to apply elastic force to each resistor to compress the resistor.
Preferably, the conductive sheet is fixedly mounted on the transmission nut through a mounting block.
Preferably, the conductive sheet is embedded on the mounting block.
Preferably, a first flat position is arranged on the outer side of the transmission nut, the mounting block is provided with an inner hole, and a second flat position matched with the first flat position is arranged on the wall of the inner hole.
Preferably, a sliding bearing is arranged on the shell, and the sliding bearing is sleeved on the transmission nut.
Preferably, the insulating mounting member is a protective sleeve made of an insulating material.
Preferably, the casing includes upper cover, well lid, shell and lower cover that link together in proper order from top to bottom, the top of upper cover has the through-hole, the motor is installed in well cover, the shell encloses the motor, drive nut is followed the through-hole on upper cover top is worn out.
Preferably, the casing is provided with a wiring hole, and the electric wire connected to the PCB board passes through the wiring hole on the casing.
Preferably, the insulating medium is air.
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
1) According to the electric push rod capable of being accurately positioned, the conductive sheets are pressed on the resistors to be in contact with the resistors, and the transmission nuts drive the conductive sheets to move to change the resistance value output by the resistors, so that the positions of the transmission nuts can be accurately obtained, dirt on the resistors can be scraped off when the conductive sheets are attached to the resistors to move, the influence of the dirt can be avoided, and the contact and conductive signals are good.
2) According to the electric push rod capable of being accurately positioned, two resistors are adopted, the two resistors are directly connected with the lead wires for power transmission, the resistors and the lead wires are fixed, the lead wires are not directly connected with the conductive sheet, movement of the conductive sheet under the driving of the transmission nut is facilitated, wiring of the lead wires connected with the resistors is also facilitated, and the conductive sheet only needs to connect the two resistors together for electric conduction of the two resistors.
3) According to the electric push rod capable of being accurately positioned, the position of the transmission nut can be accurately positioned through the change of the loop resistance value caused by the up-and-down movement of the conducting plate, the occupied space of the resistor is small, the electric push rod is convenient to install, the electric push rod can be used in an accurately small actuator, the resistor is adopted to work, and electromagnetic interference of a motor cannot be caused.
Drawings
FIG. 1 is an overall schematic of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
fig. 3 and 4 are schematic diagrams of the variable resistor according to the present utility model under different viewing angles, in which the variable resistor is connected to the PCB board through a wire.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 to 4, an electric putter that can accurately fix a position, including casing, motor 11, screw mechanism, variable resistor, wire 14 and PCB board 15, variable resistor includes resistance 13, insulating installed part and conducting strip 12, wherein:
The motor 11 and the screw mechanism are respectively installed on the casing, the screw mechanism comprises a screw rod 9 and a transmission nut 1 penetrating through the screw rod 9, the transmission nut 1 is sleeved on the outer side of the screw rod 9, inner teeth of the transmission nut 1 are meshed with outer teeth of the screw rod 9, and an output shaft of the motor 11 is connected with the screw rod 9 so as to be used for driving the transmission nut 1 to axially move along the screw rod 9.
The conductive sheet 12 is fixedly arranged on the transmission nut 1.
The number of the resistors 13 is two, each resistor 13 is respectively arranged on the shell through the insulating installation piece, the insulating installation piece is preferably a protective sleeve 8 made of insulating materials, and the resistors 13 are arranged on the inner wall of the protective sleeve 8.
The two resistors 13 are separated by an insulating medium. The insulating medium is preferably air, so that the two resistors 13 can be effectively separated to realize insulation, and are not directly connected.
Each resistor 13 is connected with one wire 14, and each wire 14 is connected with the PCB 15.
The conductive sheet 12 is pressed against each resistor 13 to be respectively attached to each resistor 13, so that the two resistors 13 are electrically connected through the conductive sheet 12. The parts of the two resistors 13 close to the wires 14, the conductive strips 12, the two wires 14 and the PCB board 15 form an electrical circuit. The resistance value of the variable resistor is changed by the movement of the conductive sheet 12, and the resistance value is obtained by the PCB board 15.
Further, the conductive sheet 12 is a metal elastic sheet, and after the metal elastic sheet is elastically deformed, an elastic force can be applied to each resistor 13 to compress the resistor 13, so that the conductive sheet 12 is in good and reliable contact with the resistor 13, and the conductive sheet 12 and the resistor 13 are prevented from loosening to affect measurement.
Further, the conductive sheet 12 is fixedly mounted on the drive nut 1 by a mounting block 10. The transmission nut 1 is close to the motor 11 end and sets up the installation piece 10, in addition, the outside of transmission nut 1 is provided with first flat, the installation piece 10 has the hole and be equipped with on the pore wall of hole with the second flat of first flat adaptation. The first flat position and the second flat position are arranged, so that the installation block 10 and the transmission nut 1 are convenient to install fixedly.
Further, the conductive sheet 12 is fitted on the mounting block 10, so that the mounting is stable and the conductive sheet is not easily dropped from the mounting block 10. A portion of the conductive sheet 12 is embedded inside the mounting block 10, and the conductive sheet 12 has two metal terminals, which are respectively in contact with the two resistors 13.
Further, the shell is provided with the sliding bearing 7, the sliding bearing 7 is sleeved on the transmission nut 1, the sliding bearing 7 can provide circumferential support for the transmission nut 1, the transmission nut 1 is effectively prevented from shaking, friction is reduced, and the transmission nut 1 can better transmit power.
Further, the casing includes upper cover 2, well lid 3, shell 4 and lower cover 5 that link together in proper order from top to bottom, the top of upper cover 2 has the through-hole, motor 11 installs on the well lid 3, shell 4 encloses motor 11, drive nut 1 is followed the through-hole on upper cover 2 top is worn out for drive outside load work. The motor 11 is fixedly installed with the middle cover 3, the protective sleeve 8 is fixedly installed with the middle cover 3, and the PCB 15 is fixedly installed on the inner wall of the lower cover 5, so that the structural arrangement is reasonable.
Further, the casing is provided with a wiring hole 6, and the electric wire connected to the PCB 15 passes through the wiring hole 6 on the casing. The lower cover 5 is provided with a wiring port, which is convenient for externally connecting a power supply or a signal generator and the like.
The working process of the utility model is as follows:
After the motor 11 is electrified, the lead screw 9 is driven to rotate, the rotation of the lead screw 9 drives the transmission nut 1 meshed with the lead screw 9 to move up and down, the up and down movement of the transmission nut 1 drives the mounting block 10 fixedly connected with the transmission nut to move up and down, the up and down movement of the mounting block 10 drives the conducting strip 12 to slide on the two resistors 13, and the movement of the conducting strip 12 causes the change of the resistance value of the circuit. The position of the transmission nut 1 can be accurately positioned by changing the resistance value of the electric loop caused by the up-and-down movement of the conductive sheet 12.
According to the different resistors 13, the temperature and other values inside the actuator can be precisely known, and the temperature sensor can be used in various special environments or inside high-precision instruments. The resistor 13 has small required position and convenient installation, and can be used in a small actuator.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. But electric putter of accurate location, its characterized in that includes casing, motor, screw mechanism, variable resistor, wire and PCB board, variable resistor includes resistance, insulating installed part and conducting strip, wherein:
The motor and the screw rod mechanism are respectively arranged on the shell, the screw rod mechanism comprises a screw rod and a transmission nut penetrating the screw rod, and an output shaft of the motor is connected with the screw rod and is used for driving the transmission nut to move along the axial direction of the screw rod;
the conducting strip is fixedly arranged on the transmission nut;
The two resistors are separated by an insulating medium, and each resistor is arranged on the shell through the insulating mounting piece;
each resistor is connected with one wire, and each wire is connected with the PCB board;
The conductive sheet is pressed on each resistor to be respectively attached to each resistor, so that the two resistors are electrically connected through the conductive sheet.
2. The precisely positioned electric push rod of claim 1, wherein the conductive sheet is a metal spring to exert a spring force on each resistor to compress the resistor.
3. The precisely positionable electric putter of claim 1, wherein the conductive sheet is fixedly mounted to the drive nut by a mounting block.
4. The precisely positionable electric putter of claim 3, wherein the conductive sheet is mounted on the mounting block.
5. The electric push rod capable of being accurately positioned according to claim 3, wherein a first flat position is arranged on the outer side of the transmission nut, the mounting block is provided with an inner hole, and a second flat position matched with the first flat position is arranged on the wall of the inner hole.
6. The electric push rod capable of being accurately positioned according to claim 1, wherein a sliding bearing is arranged on the casing and is sleeved on the transmission nut.
7. The precisely positionable electric putter of claim 1, wherein the insulative mounting member is a protective sleeve made of an insulative material.
8. The electric putter of claim 1, wherein the casing includes upper cover, middle cover, shell and lower cover that link together in proper order from top to bottom, the top of upper cover has the through-hole, the motor is installed in the middle cover, the shell encloses the motor, drive nut is worn out from the through-hole at upper cover top, the PCB board fixed mounting is in on the inner wall of lower cover.
9. The electric push rod capable of being accurately positioned according to claim 1, wherein the casing is provided with a wiring hole, and wires connected to the PCB board pass through the wiring hole in the casing.
10. The precisely positionable electric putter of claim 1, wherein the insulating medium is air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323034891.6U CN221042574U (en) | 2023-11-10 | 2023-11-10 | Electric putter that can pinpoint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323034891.6U CN221042574U (en) | 2023-11-10 | 2023-11-10 | Electric putter that can pinpoint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221042574U true CN221042574U (en) | 2024-05-28 |
Family
ID=91132724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323034891.6U Active CN221042574U (en) | 2023-11-10 | 2023-11-10 | Electric putter that can pinpoint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221042574U (en) |
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2023
- 2023-11-10 CN CN202323034891.6U patent/CN221042574U/en active Active
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