CN213754483U - Miniature pulse counter - Google Patents
Miniature pulse counter Download PDFInfo
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- CN213754483U CN213754483U CN202022904786.3U CN202022904786U CN213754483U CN 213754483 U CN213754483 U CN 213754483U CN 202022904786 U CN202022904786 U CN 202022904786U CN 213754483 U CN213754483 U CN 213754483U
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- wheel
- pawl
- stepping motor
- torsion spring
- pulse counter
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Abstract
The utility model relates to a miniature pulse counter relates to electromechanical type pulse counting field, concretely relates to miniature pulse counter, including casing and the counting wheel of setting in the casing, the counting wheel includes a plurality of digit wheels and connects the advancing wheel of two adjacent digit wheels, and first digit wheel is the unit digit wheel, still be provided with step motor in the casing, step motor links to each other with the unit digit wheel through the connecting device that drives the unit digit wheel and rotate, the last motor lead-out wire that is used for receiving pulse signal that is connected with of step motor; the utility model discloses well pulse signal passes through the motor lead-out wire with the signal of telecommunication form and links to each other with step motor, drives step motor action to drive driving lever, pawl and ratchet piece intermeshing transmission, and then realize the count of count wheel. The utility model discloses well ratchet pawl meshing formula transmission compares in gear meshing formula transmission in the past, and the transmission is more steady, the reliability is higher, the processing of being more convenient for, cost economy.
Description
Technical Field
The utility model relates to an electromechanical type pulse count field, concretely relates to miniature pulse counter.
Background
The pulse counting is the simplest basic operation, the micro pulse counter is mechanical digital accumulation for realizing the operation, and the counter mainly counts the number of pulses in a digital system to realize the functions of measurement, counting and control and also has the function of frequency division. At present, common counters comprise an electromagnetic attraction type counter, a gear transmission type counter and the like, but are limited by factors such as use precision, environment and the like, and the application range is limited greatly.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a miniature pulse counter which is small in size, low in power consumption, high in precision, good in anti-vibration performance, good in sealing performance and electromechanical combination, the mechanism is powered by two-wire pulse signals to replace the miniature counter driven by an electromagnet, the mechanism can reliably, stably and accurately count pulses, and a circuit board component has an overload protection function and can adapt to various environments.
The utility model relates to a miniature pulse counter, including the casing and set up the count wheel in the casing, the count wheel includes a plurality of digit wheels and connects the advancing wheel of two adjacent digit wheels, and first digit wheel is the personal digit wheel, still be provided with step motor in the casing, step motor links to each other with the personal digit wheel through the connecting device that drives the personal digit wheel and rotate, be connected with the motor lead-out wire that is used for receiving pulse signal on the step motor;
the connecting device comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly arranged on the unit digital wheel, the rotation axis of the ratchet wheel and the central line of the unit digital wheel are positioned on the same straight line, the ratchet wheel is connected with a driving lever through the pawl, the driving lever is connected with an output shaft of the stepping motor, when the stepping motor receives a pulse signal, the stepping motor acts once, the driving lever drives the pawl to act, and the pawl drives the unit digital wheel to rotate through the ratchet wheel for counting.
Preferably, a reset device is further arranged between the output shaft of the stepping motor and the shifting lever.
Preferably, the reset device is a torsion spring, the torsion spring is sleeved on the output shaft, one end of the torsion spring is connected with the shift lever, the other end of the torsion spring is connected with a torsion spring stop pin, and the torsion spring stop pin is fixedly arranged in the shell;
when the stepping motor drives the deflector rod to swing, the torsion spring is compressed and compressed, and when the torsion spring resets, the torsion spring drives the deflector rod to reset.
Preferably, the output shaft is circumferentially and fixedly sleeved with a pressing sleeve, the deflector rod is fixedly sleeved on one end of the pressing sleeve far away from the output shaft, and one end of the deflector rod far away from the pressing sleeve is connected with the pawl;
the torsion spring is sleeved on the pressing sleeve.
Preferably, a counterweight pin is arranged on one end of the shifting rod away from the pawl.
Or preferably, one end of the pawl is connected with the ratchet in a matching way, the other end of the pawl is a shifting fork-shaped connector, and one end of the shifting rod connected with the pawl is arranged in the connector;
the middle part of the pawl is rotationally connected with the shell, and the rotation axis of the pawl is parallel to the rotation axis of the ratchet wheel.
Preferably, a fixing hole is formed in the middle of the pawl, a rotating shaft is arranged in the fixing hole, the pawl is axially and fixedly connected with the rotating shaft through the fixing hole, and the rotating shaft is fixedly connected with the shell.
Preferably, the ratchet wheel is fixedly connected with one end face of the unit number wheel through a rivet;
ten engaging teeth are uniformly distributed on the circumferential surface of the unit digital wheel, the stepping motor receives a pulse signal, and the driving lever drives the ratchet wheel to rotate through one engaging tooth through the pawl.
Preferably, the shell is a hollow rectangular shell, one end of the shell is hermetically provided with a front end cover, meter glass for degrees is arranged at the position, corresponding to the counting wheel, of the front end cover, the other end of the shell is hermetically connected with a rear end cover through a damping sealing gasket, the rear end cover is fixedly connected with the shell, and the motor lead wire penetrates out of the rear end cover and is hermetically connected with the rear end cover;
the counting wheel and the ratchet wheel are rotationally connected with the shell through the counting shaft, and the stepping motor is fixedly connected with the shell through the motor mounting seat.
Preferably, a plurality of supporting beams are further arranged in the shell, the supporting beams are parallel to the counting shaft, one end of each supporting beam is fixedly connected with one side wall of the shell, the other end of each supporting beam is fixedly connected with the other side wall parallel to the side wall, and the supporting beams are fixedly provided with rubber strips with the same length as the supporting beams;
the stepping motor is a reciprocating rotary stepping motor.
The utility model discloses well pulse signal passes through the motor lead-out wire with the signal of telecommunication form and links to each other with step motor, drives step motor action to drive driving lever, pawl and ratchet piece intermeshing transmission, and then realize the count of count wheel.
The utility model discloses well ratchet pawl meshing formula transmission compares in gear meshing formula transmission in the past, and the transmission is more steady, the reliability is higher, the processing of being more convenient for, cost economy.
The utility model discloses the ratchet is ten tooth transmission counts, and 36 degrees of ratchet are a tooth, and a corresponding digital wheel word of a ratchet tooth compares in gear engagement formula transmission in the past, and the count precision is higher, the reliability is higher, the processing of being more convenient for, and is with low costs.
The utility model discloses step motor is reciprocating rotation formula step motor, compares in electromagnetic attraction formula transmission in the past, and the volume is littleer, the consumption is lower, the output torque is bigger, the reliability is higher, the processing of being more convenient for, cost-effective.
The utility model discloses a supporting beam part design has the adhesive tape, and impact resistance is good, the shock resistance can be good.
The utility model discloses the design of rear end cap has the shock attenuation to seal the pad, and impact resistance is good, shock resistance is good.
The utility model has the advantages as follows:
the utility model has compact structure, convenient production, economic cost and strong environmental adaptability;
the utility model discloses do not receive the restriction of digital wheel number, step motor all can provide stable moment of torsion, realizes the count of multi-number digital wheel.
Drawings
Fig. 1 is an explosion diagram of the present invention.
FIG. 2 is a schematic view of the connection between the ratchet wheel and the one-digit code wheel.
Fig. 3 is an exploded view of the toggle lever.
Reference numerals: the device comprises a shell, a meter glass, a supporting beam, a counting wheel, a stepping wheel, a 5-advancing wheel, a 6-digit wheel, a ratchet wheel, a pawl, a rotating shaft, a driving lever, a stepping motor, a rear end cover, a front end cover, a motor outgoing line, a first side plate, a second side plate, a pressing sleeve, a torsion spring and a balance weight pin, wherein the shell is 1-shell, the meter glass is 2-meter glass, the supporting beam is 3-supporting beam, the counting wheel is 4-counting wheel, the stepping wheel is 5-advancing wheel, the digit wheel is 6-digit wheel, the ratchet wheel is 7-pawl, the rotating shaft is 9-rotating shaft, the driving lever is 10-driving lever, the stepping motor is 11-rear end cover, the motor outgoing line is 13-front end cover, the motor outgoing line is 14-first side plate, the motor outgoing line is 15-first side plate, the second side plate is 16-second side plate, the pressing sleeve is 17-torsion spring, and the balance weight pin is 19.
Detailed Description
The utility model relates to a miniature pulse counter, including casing 1 and the counting wheel 4 of setting in casing 1, counting wheel 4 includes a plurality of digit wheels and connects the advancing wheel 5 of two adjacent digit wheels, and first digit wheel is the unit digit wheel 6, still be provided with step motor 11 in the casing 1, step motor 11 links to each other with the unit digit wheel 6 through the connecting device that drives the unit digit wheel 6 rotation, be connected with the motor lead-out wire 14 that is used for receiving pulse signal on step motor 11;
the connecting device comprises a ratchet wheel 7 and a pawl 8, the ratchet wheel 7 is fixedly arranged on the unit digit wheel 6, the rotation axis of the ratchet wheel 7 and the center line of the unit digit wheel 6 are positioned on the same straight line, the ratchet wheel 7 is connected with a driving lever 10 through the pawl 8, the driving lever 10 is connected with an output shaft of a stepping motor 11, when the stepping motor 11 receives a pulse signal, the stepping motor 11 acts once, the pawl 8 is driven to act through the driving lever 10, and the pawl 8 drives the unit digit wheel 6 to rotate for counting through the ratchet wheel 7.
A reset device is also arranged between the output shaft of the stepping motor 11 and the shift lever 10.
The reset device is a torsion spring 18, the torsion spring 18 is sleeved on the output shaft, one end of the torsion spring 18 is connected with the deflector rod 10, the other end of the torsion spring 18 is connected with a torsion spring 18 stop pin, and the torsion spring 18 stop pin is fixedly arranged in the shell 1;
when the stepping motor 11 drives the shift lever 10 to swing, the torsion spring 18 is compressed and compressed, and when the torsion spring 18 is reset, the torsion spring 18 drives the shift lever 10 to reset.
A pressure sleeve 17 is fixedly sleeved on the output shaft in the circumferential direction, the deflector rod 10 is fixedly sleeved on one end of the pressure sleeve 17 far away from the output shaft, and one end of the deflector rod 10 far away from the pressure sleeve 17 is connected with the pawl 8;
the torsion spring 18 is sleeved on the pressing sleeve 17.
A counterweight pin 19 is provided on the end of the lever 10 remote from the pawl 8.
One end of the pawl 8 is connected with the ratchet wheel 7 in a matching way, the other end of the pawl is a shifting fork-shaped connector, and one end of the shifting rod 10 connected with the pawl 8 is arranged in the connector;
the middle part of the pawl 8 is rotationally connected with the shell 1, and the rotation axis of the pawl 8 is arranged in parallel with the rotation axis of the ratchet wheel 7.
The middle of the pawl 8 is provided with a fixing hole, a rotating shaft 9 is arranged in the fixing hole, the pawl 8 is fixedly connected with the rotating shaft 9 through the fixing hole in the axial direction, and the rotating shaft 9 is fixedly connected with the shell 1.
The ratchet wheel 7 is fixedly connected with one end face of the single digit wheel 6 through a rivet;
ten engaging teeth are uniformly distributed on the circumferential surface of the unit digital wheel, the stepping motor 11 receives a pulse signal, and the driving lever 10 drives the ratchet wheel 7 to rotate by one engaging tooth through the pawl 8.
The counting device comprises a shell 1, a motor lead-out wire 14, a counting wheel 4, a front end cover 13, a back end cover 12, a motor lead-out wire 14, a counter glass 2, a counter glass cover, a counter glass cover, a counter glass cover, a counter glass cover, a counter glass cover, a counter glass cover, a counter glass cover, a counter glass cover, a;
the counting wheel 4 and the ratchet wheel 7 are rotationally connected with the shell 1 through a counting shaft, and the stepping motor 11 is fixedly connected with the shell 1 through a motor mounting seat.
A plurality of supporting beams 3 are further arranged in the shell 1, the supporting beams 3 are arranged in parallel with the counting shaft, one end of each supporting beam 3 is fixedly connected with one side wall of the shell 1, the other end of each supporting beam 3 is fixedly connected with the other side wall parallel to the side wall, and adhesive tapes with the same length as the supporting beams 3 are fixedly arranged on the supporting beams 3;
the stepping motor 11 is a reciprocating rotary stepping motor 11.
During the use, set up count wheel 4 and step motor 11 and motor mount pad between first curb plate 15 and second curb plate 16, the count axle rotates with above-mentioned two curb plates and links to each other, then puts into casing 1 with whole, and first curb plate 15 and second curb plate 16 correspond the lateral wall in casing 1 respectively and fixedly link to each other.
Pulse signals are input to the stepping motor 11 through a motor outgoing line 14 in an electric signal mode, so that high-temperature enameled wires wound on a coil framework in the stepping motor 11 have current to pass through, magnetic steel generates Lorentz force under the influence of the electrified high-temperature enameled wires, a rotor is driven to rotate to generate torque, an output shaft of the stepping motor 11 is driven to rotate, the output shaft is connected with a shifting rod 10, reciprocating rotation motion is achieved under the action of a torsion spring 18, the shifting rod 10 drives a pawl 8 to perform reciprocating rotation motion by taking a rotating shaft 9 as a rotating center, the pawl 8 is meshed with a ratchet wheel 7 to drive a single digit wheel 6 to rotate for counting, N pulse signals are input, and the single digit wheel 6 has N counts, so that the counting function of a counting wheel 4 is achieved. In the typical application example, the rotation angle of the shift lever 10 is 11 degrees, the output torque of the torsion spring 18 is 30 g.mm, and the output torque of the torsion spring 18 is one third of the output torque of the stepping motor 11; the output torque of the stepping motor 11 is 90 g.mm, the power consumption of the stepping motor 11 is less than 100mA, the wire diameter specification of a high-temperature enameled wire wound on the coil framework left and right is 0.04mm, and the number of turns specification is 500 turns; the minimum response pulse width of the pulse signal is 10ms, and the maximum response frequency of the pulse signal is 25 Hz; in order to realize the overload protection function, a voltage stabilizing diode may be provided between the stepping motor 11 and the motor lead-out wire 14; the whole mechanism can work normally at the low temperature of-40 ℃ and the high temperature of +135 ℃.
The utility model discloses well pulse signal passes through motor lead-out wire 14 with the signal of telecommunication form and links to each other with step motor 11, drives step motor 11 action to drive driving lever 10, pawl 8 and 7 intermeshing transmissions of ratchet, and then realize the count of count wheel 4.
The utility model discloses the transmission of 8 engaged types of well ratchet 7 pawls compares in gear engaged type transmission in the past, and the transmission is more steady, the reliability is higher, the processing of being more convenient for, cost economy.
The utility model discloses ratchet 7 is ten tooth transmission counts, and ratchet 7 is a 36 degrees teeth, and a 7 teeth of ratchet correspond a digital wheel word, compare in the gear engagement formula transmission in the past, and the count precision is higher, the reliability is higher, the processing of being more convenient for, and is with low costs.
The utility model discloses step motor 11 is reciprocating rotation formula step motor 11, compares in electromagnetic attraction formula transmission in the past, and the volume is littleer, the consumption is lower, the output torque is bigger, the reliability is higher, the processing of being more convenient for, cost-economy.
The utility model discloses 3 part designs of a supporting beam have the adhesive tape, and impact resistance is good, shock resistance is good.
The utility model discloses rear end cap 12 design has the shock attenuation to seal the pad, and impact resistance is good, shock resistance is good.
The utility model has the advantages as follows:
the utility model has compact structure, convenient production, economic cost and strong environmental adaptability;
the utility model discloses do not receive the restriction of digital wheel number, step motor 11 all can provide stable moment of torsion, realizes the count of multi-digit wheel.
Claims (10)
1. A miniature pulse counter comprises a shell (1) and a counting wheel (4) arranged in the shell (1), wherein the counting wheel (4) comprises a plurality of digital wheels and a stepping wheel (5) connected with two adjacent digital wheels, and the first digital wheel is a single-digit wheel (6), and the miniature pulse counter is characterized in that a stepping motor (11) is further arranged in the shell (1), the stepping motor (11) is connected with the single-digit wheel (6) through a connecting device for driving the single-digit wheel (6) to rotate, and a motor outgoing line (14) for receiving a pulse signal is connected to the stepping motor (11);
the connecting device comprises a ratchet wheel (7) and a pawl (8), wherein the ratchet wheel (7) is fixedly arranged on the unit digit wheel (6), the rotation axis of the ratchet wheel (7) and the central line of the unit digit wheel (6) are positioned on the same straight line, the ratchet wheel (7) is connected with a driving lever (10) through the pawl (8), the driving lever (10) is connected with the output shaft of a stepping motor (11), when the stepping motor (11) receives a pulse signal, the stepping motor (11) acts once, the pawl (8) is driven to act through the driving lever (10), and the pawl (8) drives the unit digit wheel (6) to rotate through the ratchet wheel (7) for counting.
2. The miniature pulse counter according to claim 1, wherein a reset device is further disposed between the output shaft of said stepping motor (11) and said shift lever (10).
3. The miniature pulse counter according to claim 2, wherein the resetting device is a torsion spring (18), the torsion spring (18) is sleeved on the output shaft, one end of the torsion spring (18) is connected with the shift lever (10), the other end of the torsion spring (18) is connected with a stop pin of the torsion spring (18), and the stop pin of the torsion spring (18) is fixedly arranged in the housing (1);
when the stepping motor (11) drives the deflector rod (10) to swing, the torsion spring (18) is compressed and compressed, and when the torsion spring (18) resets, the torsion spring (18) drives the deflector rod (10) to reset.
4. The miniature pulse counter as set forth in claim 3, wherein said output shaft is fixedly sleeved with a pressing sleeve (17) in a circumferential direction, said shift lever (10) is fixedly sleeved on an end of the pressing sleeve (17) away from the output shaft, and an end of the shift lever (10) away from the pressing sleeve (17) is connected with the pawl (8);
the torsion spring (18) is sleeved on the pressing sleeve (17).
5. A miniature pulse counter according to claim 4, wherein a weighted pin (19) is provided on the end of said toggle lever (10) remote from said pawl (8).
6. The miniature pulse counter according to any of claims 1-5, wherein one end of said pawl (8) is connected with said ratchet wheel (7) in a matching manner, and the other end is a fork-shaped connector, and the end of said lever (10) connected with said pawl (8) is placed in the connector;
the middle part of the pawl (8) is rotationally connected with the shell (1), and the rotation axis of the pawl (8) is parallel to the rotation axis of the ratchet wheel (7).
7. The miniature pulse counter according to claim 6, wherein a fixing hole is formed in the middle of the pawl (8), a rotating shaft (9) is arranged in the fixing hole, the pawl (8) and the rotating shaft (9) are axially and fixedly connected through the fixing hole, and the rotating shaft (9) is fixedly connected with the shell (1).
8. The miniature pulse counter as set forth in claim 7, wherein said ratchet wheel (7) is fixedly connected to one end face of said one-digit code wheel (6) by means of a rivet;
ten meshing teeth are evenly distributed on the circumferential surface of the unit digital wheel (6), a pulse signal is received by the stepping motor (11), and the driving lever (10) drives the ratchet wheel (7) to rotate by one meshing tooth through the pawl (8).
9. The miniature pulse counter according to claim 8, wherein the housing (1) is a hollow rectangular housing (1), one end of the housing (1) is provided with a front end cover (13) in a sealing manner, the position of the front end cover (13) corresponding to the counting wheel (4) is provided with meter glass (2) for the number of degrees, the other end of the housing (1) is connected with a rear end cover (12) in a sealing manner through a damping sealing gasket, the rear end cover (12) is fixedly connected with the housing (1), and the motor lead-out wire (14) penetrates out of the rear end cover (12) and is connected with the rear end cover (12) in a sealing manner;
the counting wheel (4) and the ratchet wheel (7) are rotationally connected with the shell (1) through a counting shaft, and the stepping motor (11) is fixedly connected with the shell (1) through a motor mounting seat.
10. The miniature pulse counter according to claim 9, wherein a plurality of supporting beams (3) are further arranged in the housing (1), the supporting beams (3) are arranged in parallel with the counting shaft, one end of each supporting beam (3) is fixedly connected with one side wall of the housing (1), the other end of each supporting beam is fixedly connected with the other side wall parallel to the side wall, and adhesive tapes with the same length as the supporting beams (3) are fixedly arranged on the supporting beams (3);
the stepping motor (11) is a reciprocating rotary stepping motor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022904786.3U CN213754483U (en) | 2020-12-07 | 2020-12-07 | Miniature pulse counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022904786.3U CN213754483U (en) | 2020-12-07 | 2020-12-07 | Miniature pulse counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213754483U true CN213754483U (en) | 2021-07-20 |
Family
ID=76833845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022904786.3U Active CN213754483U (en) | 2020-12-07 | 2020-12-07 | Miniature pulse counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213754483U (en) |
-
2020
- 2020-12-07 CN CN202022904786.3U patent/CN213754483U/en active Active
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