CN215580625U - Integrated servo motor with improved structure - Google Patents

Abstract

The utility model provides a construction improvement's integrated servo motor, includes motor body and a afterbody extension seat, motor body is provided with power take off end in its length direction's one side, this afterbody extension seat set up in motor body's the ascending opposite side of length direction, the extending direction of afterbody extension seat is unanimous with the length direction of above-mentioned motor body. The motor rear encoder can protect the encoder at the rear part of the motor, and the circuit board unit can be directly additionally arranged in the motor rear encoder, so that the servo motor is not required to be connected with an external control and driving device through a wiring, the control and driving are completely realized and the servo motor is arranged in the servo motor, and the servo motor can be made into a lengthened version of the original motor body through additionally arranging the tail extending seat, so that a plurality of servo motors can be arranged in close proximity, the neatness and the attractiveness of installation are greatly improved, the wiring position is not required to be reserved, and the occupied space is greatly reduced.

Description

Integrated servo motor with improved structure

Technical Field

The utility model relates to a servo motor, in particular to an integrated servo motor with an improved structure.

Background

The servo motor can control the speed and position accuracy accurately, and can convert the voltage signal into torque and rotating speed to drive a control object. The rotation speed of the rotor of the servo motor is controlled by an input signal and can quickly respond, the servo motor is used as an actuating element in an automatic control system, has the characteristics of small electromechanical time constant, high linearity, starting voltage and the like, and can convert a received electric signal into angular displacement or angular speed on a motor shaft for output. The servo motor is divided into two categories of direct current servo motors and alternating current servo motors, and is mainly characterized in that when the signal voltage is zero, the signal voltage has no autorotation phenomenon, and the rotating speed is reduced at a constant speed along with the increase of the torque.

At present, the conventional servo motor is generally rectangular, and one end of the servo motor is provided with a power output end, and a plurality of wire slots are arranged on a motor body and electrically connected with external control and driving equipment through flat cables. The prior servo motor has the following defects in the using process: 1. the wire arrangement is complex, special wiring is needed, and the fault rate is high due to easy aging of the wire; 2. the occupied space is large when the electric appliance cabinet is installed, and the electric appliance cabinet is required to be matched with the electric appliance cabinet.

SUMMERY OF THE UTILITY MODEL

The utility model provides an integrated servo motor with an improved structure, which mainly aims to overcome the defects of complex wire arrangement and easy line aging of the conventional servo motor.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a construction improvement's integrated servo motor, includes motor body, motor body is provided with power take off end in its length direction's one side, and above-mentioned integrated servo motor still includes a afterbody and extends the seat, this afterbody extend the seat set up in motor body's the ascending opposite side of length direction, the extending direction that the afterbody extended the seat is unanimous with above-mentioned motor body's length direction.

Furthermore, at least one circuit board unit for driving the motor body to execute actions is arranged in the tail extension seat.

Further, the installation direction of the circuit board unit is consistent with the length direction of the motor body.

Further, the cross section of the tail extension seat is consistent with the shape and the size of the cross section of the motor body.

Further, the tail extension seat is composed of an upper shell and a lower shell which are symmetrically arranged, and the upper shell and the lower shell are detachably mounted on the motor body.

Furthermore, at least one elongated mounting hole is formed in the cross section of each of the upper shell and the lower shell, a plurality of bolt pieces extending out from one side of the power output end to the other side of the power output end are correspondingly arranged on the motor body, and the upper shell and the lower shell are fastened with the bolt pieces through the respective elongated mounting holes in the upper shell and the lower shell.

Furthermore, the motor body is provided with an encoder with a section smaller than that of the motor body on one side opposite to the power output end, the inner sides of the upper shell and the lower shell are respectively provided with an accommodating cavity for accommodating the encoder, and the circuit board unit is installed in the accommodating cavity and is positioned on the other side of the encoder.

Furthermore, the upper shell and the lower shell are provided with a heat dissipation structure on the side opposite to the accommodating cavity.

Furthermore, the upper shell and the lower shell are aluminum alloy shells, and the heat dissipation structure comprises a plurality of heat dissipation fins arranged at intervals.

Further, the circuit board unit includes external signal input interface, optical fiber communication module, encoder interface circuit, ARM treater, motor drive circuit and DC power supply V, motor drive circuit includes sequential control circuit, motor protection circuit and drive work circuit, external signal input interface, optical fiber communication module all with ARM treater both way junction, encoder circuit's output with the enable end of ARM treater links to each other, sequential control circuit's enable end connect in the output of ARM treater, sequential control circuit's output connect in motor protection circuit's enable end, motor protection circuit's output is connected in drive work circuit's enable end.

Compared with the prior art, the utility model has the beneficial effects that:

the motor body is provided with the tail extending seat, the motor body is provided with the circuit board unit, the tail extending seat is arranged on the other side of the motor body, the encoder at the rear part of the motor can be protected, the circuit board unit can be directly additionally arranged in the motor body, so that the servo motor is not required to be connected with an external control and driving device through a wiring, the control and driving are completely realized, the servo motor is arranged in the servo motor, the tail extending seat is additionally arranged, the servo motor can be made into a lengthened version of the original motor body, and therefore, a plurality of servo motors can be arranged in a close manner, the neatness and the attractiveness of installation are greatly improved, the wiring position is not required to be reserved, and the occupied space is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic block diagram of the circuit board unit according to the present invention.

Fig. 4 is a circuit diagram of the motor driving circuit according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Reference is made to fig. 1, 2, 3 and 4. The utility model provides a construction improvement's integrated servo motor, includes motor body 1, motor body 1 is provided with power take off 2 in its ascending one side of length direction, and above-mentioned integrated servo motor still includes a afterbody and extends seat 3, this afterbody extend seat 3 set up in the ascending opposite side of length direction of motor body 1, the extending direction that the afterbody extended seat 3 was unanimous with the length direction of above-mentioned motor body 1.

Reference is made to fig. 1, 2, 3 and 4. At least one circuit board unit 4 for driving the motor body 1 to execute actions is arranged in the tail extension seat 3.

Reference is made to fig. 1, 2, 3 and 4. The mounting direction of the circuit board unit 4 is consistent with the length direction of the motor body 1.

Reference is made to fig. 1, 2, 3 and 4. The cross section of the tail extension seat 3 is consistent with the shape and the size of the cross section of the motor body 1.

Reference is made to fig. 1, 2, 3 and 4. The tail extension base 3 is composed of an upper shell 30 and a lower shell 31 which are symmetrically arranged, and the upper shell 30 and the lower shell 31 are detachably mounted on the motor body 1.

Reference is made to fig. 1, 2, 3 and 4. At least one elongated mounting hole 300 is formed in the cross section of each of the upper casing 30 and the lower casing 31, a plurality of bolt pieces 5 extending from one side of the power output end 2 to the other side are correspondingly arranged on the motor body 1, and the upper casing 30 and the lower casing 31 are fastened with the bolt pieces 5 through the respective elongated mounting holes 300.

Reference is made to fig. 1, 2, 3 and 4. The motor body 1 is provided with an encoder 6 with a section smaller than that of the motor body 1 on one side opposite to the power output end 2, the inner sides of the upper shell 30 and the lower shell 31 are respectively provided with an accommodating cavity 301 for accommodating the encoder 6, and the circuit board unit 4 is installed in the accommodating cavity 301 and is positioned on the other side of the encoder 6.

Reference is made to fig. 1, 2, 3 and 4. The upper and lower cases 30 and 31 are provided with a heat dissipation structure at a side opposite to the accommodation chamber 301.

Reference is made to fig. 1, 2, 3 and 4. The upper casing 30 and the lower casing 31 are aluminum alloy casings, and the heat dissipation structure includes a plurality of heat dissipation fins 302 arranged at intervals.

Reference is made to fig. 1, 2, 3 and 4. The circuit board unit 4 comprises an external signal input interface 40, an optical fiber communication module 41, an encoder interface circuit 42, an ARM processor 43, a motor driving circuit 44 and a direct current power supply V, the motor driving circuit 44 comprises a sequential control circuit 45, a motor protection circuit 46 and a driving working circuit 47, the external signal input interface 40, the optical fiber communication module 41 and the ARM processor 43 are connected in two directions, an output end of the encoder 6 circuit is connected with an enabling end of the ARM processor 43, the enabling end of the sequential control circuit 45 is connected with an output end of the ARM processor 43, an output end of the sequential control circuit 45 is connected with the enabling end of the motor protection circuit 46, and an output end of the motor protection circuit 46 is connected with the enabling end of the driving working circuit 47.

Refer to fig. 4. The drive operation circuit 47 includes: the first isolation grid driving circuit receives a U-phase control signal high-end signal UH and a low-end signal UL, and comprises a first bootstrap booster circuit and a first MOS tube output electrode; the second isolation grid driving circuit, the second bootstrap booster circuit and the second MOS tube output electrode receive the V-phase control signals VH and VL; the third isolation grid driving circuit, the third bootstrap booster circuit and the third MOS tube output electrode receive the W-phase control signals WH and WL; the first isolation gate drive circuit comprises a drive chip U1, a resistor R1 and a resistor R2, the first bootstrap upgrade circuit comprises a diode D2 and a capacitor C6, the output electrode of the first MOS tube consists of an N-channel MOS tube Q1 and an N-channel MOS tube Q3, a U-phase control signal high-end signal UH and a low-end signal UL are isolated by the interior of the drive chip U1, the high-end signal UH is output to the N-channel MOS tube Q1 by the drive chip U1, the low-end signal UL is output to the N-channel MOS tube Q3 by the drive chip U1, and the on-off state of the above circuits is realized by a timing control circuit 45 generated in the drive chip U1, when the N-channel MOS tube Q1 is cut off and the N-channel MOS tube Q3 is turned on, a direct current power supply V charges the capacitor C6 through the diode D2, the voltage on the capacitor C6 is close to the voltage of a direct current power supply V, when the N-channel MOS tube Q1 is turned on and the N-channel MOS tube Q5 is turned off, a source voltage of the N-channel MOS tube Q1 and a source electrode of the drive circuit is established between the N-channel MOS tube Q57323, the capacitor C6 discharges when the driving chip U1 drives the N-channel MOS tube Q1, the above processes are repeated when the N-channel MOS tube Q1/the N-channel MOS tube Q3 work, the charging/discharging action is repeated on the capacitor C6, and the grid driving voltage is kept high enough on the C6 due to the quick charging and slow discharging of the C6, so that the driving chip U1 and the N-channel MOS tube Q1 can work normally.

Refer to fig. 4. The second isolated gate driving circuit comprises a driving chip U2, a resistor R3 and a resistor R11, the second bootstrap upgrade circuit comprises a diode D3 and a capacitor C7, the output electrode of the second MOS tube comprises an N-channel MOS tube Q2 and an N-channel MOS tube Q4, after a V-phase control signal high-end signal VH and a low-end signal VL are isolated inside the driving chip U2, the high-end signal VH is output to the N-channel MOS tube Q2 by the driving chip U2, the low-end signal VL is output to the N-channel MOS tube Q4 by the driving chip U2, and the timing control circuit 45 generated inside the driving chip U2 is used for realizing the state of the circuits, when the N-channel MOS tube Q2 is cut off and the N-channel MOS tube Q84 is switched on, a direct current power supply V charges the capacitor C7 through the diode D3, the voltage on the capacitor C7 is close to the voltage of the direct current power supply V, when the N-channel MOS tube Q2 is switched on and the N-channel MOS tube Q5 is switched on, the N-channel MOS tube Q2 and a source voltage on the source MOS tube Q3724 is established between the source driving circuit, the capacitor C7 discharges when the driving chip U2 drives the N-channel MOS tube Q2, the above processes are repeated when the N-channel MOS tube Q2/the N-channel MOS tube Q4 work, the charging/discharging action is repeated on the capacitor C7, and the grid driving voltage is kept high enough on the C7 due to the quick charging and slow discharging of the C7, so that the driving chip U2 and the N-channel MOS tube Q2 can work normally.

Refer to fig. 4. The third isolated gate driving circuit comprises a driving chip U3, a resistor R12 and a resistor R30, the third bootstrap upgrade circuit comprises a diode D1 and a capacitor C10, the output electrode of the third MOS tube comprises an N-channel MOS tube Q5 and an N-channel MOS tube Q6, after the W-phase control signal high-end signal WH and the low-end signal WL are isolated by the inside of the driving chip U3, the high-end signal WH is output to the N-channel MOS tube Q5 by the driving chip U3, the low-end signal WL is output to the N-channel MOS tube Q6 by the driving chip U3, and the on-off state of the above circuits is realized by a timing control circuit 45 generated inside the driving chip U3, when the N-channel MOS tube Q5 is turned off and the N-channel MOS tube Q6 is turned on, a direct current power supply V charges the capacitor C10 through the diode D1, the voltage on the capacitor C10 is close to the voltage of the direct current power supply V, when the N-channel MOS tube Q5 is turned on, and the N-channel MOS tube Q5 is turned off, a source voltage of the N-channel MOS tube Q5 and a source electrode of the N-channel MOS tube Q57323 is established between the source circuit, the capacitor C10 discharges when the driving chip U3 drives the N-channel MOS tube Q5, the above processes are repeated when the N-channel MOS tube Q5/the N-channel MOS tube Q6 work, the charging/discharging action is repeated on the capacitor C10, and the grid driving voltage is kept high enough on the C10 due to the quick charging and slow discharging of the C10, so that the driving chip U3 and the N-channel MOS tube Q5 can work normally.

Refer to fig. 4. The motor protection circuit 46 consists of an upper end current protection circuit and a lower end current protection circuit, the upper end current protection circuit consists of a photoelectric coupler U15, a capacitor C8, a resistor R8 and a resistor R5, and the resistor R5 is connected in series with the drain electrodes of an N-channel MOS tube Q1, an N-channel MOS tube Q2 and an N-channel MOS tube Q5 and is used for detecting the total working current and converting the total working current into voltage; the resistor R8 and the capacitor C8 form a low-pass filter, the pulsating working voltage is filtered to form direct-current voltage which is input to the photoelectric coupler U15, and when the voltage is higher than 1V, the photoelectric coupler U15 is conducted and outputs a low-level signal to indicate overcurrent.

Refer to fig. 4. The lower-end current protection circuit consists of a triode Q7, a capacitor C9, a resistor R22, a resistor R23 and a resistor R6, wherein the resistor R6 is connected in series with the source electrode of an N-channel MOS tube Q6, and the source electrode current of the N-channel MOS tube Q6 is converted into voltage; the resistor R22, the resistor R23 and the capacitor C9 form a low-pass filter, the pulsating working voltage is filtered to form direct-current voltage which is input into the triode Q7, and when the voltage is higher than 0.7V, the triode Q7 is conducted and outputs a low-level signal to indicate overcurrent.

The circuit adopted by the utility model can meet the requirement of smooth work in a three-phase power supply system by arranging three groups of isolation grid drive circuits, bootstrap booster circuits and MOS tube output electrodes with the same structure, and has the advantages of small power consumption, low heat productivity and simple circuit of the whole circuit, greatly improved reliability of the drive circuit, prolonged service life of a driver and a servo motor and saved repair cost.

The circuit board unit 4 is small and attractive in design, so that the circuit board unit can be completely arranged in the accommodating cavity 301, the heat productivity of the circuit board can be greatly reduced through the modified design of the circuit, the heat generated during the operation of the equipment can be fully taken away only by the aluminum alloy shell and the heat dissipation fins 302 of the aluminum alloy shell, the circuit can work smoothly for a long time, and the service life of the product is greatly prolonged.

Compared with the prior art, the utility model has the beneficial effects that:

the motor is simple in structure and strong in practicability, the tail extension seat 3 is arranged on the other side of the motor body 1, the encoder 6 at the rear part of the motor can be protected, the circuit board unit 4 can be directly additionally arranged in the motor, so that the servo motor is not required to be connected with an external control and driving device through a wiring, control and driving are completely realized, the servo motor is arranged in the servo motor, the tail extension seat 3 is additionally arranged, the servo motor can be made into a lengthened version of the original motor body 1, therefore, a plurality of servo motors can be arranged in a close manner, the neatness and attractiveness of installation are greatly improved, the wiring position is not required to be reserved, and the occupied space is greatly reduced.

The above description describes the improved structure of the integrated servo motor provided by the present invention in detail. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a construction improvement's integrated servo motor, includes motor body, motor body is provided with power take off end, its characterized in that in its length direction one side: the motor further comprises a tail extension seat, the tail extension seat is arranged on the other side of the motor body in the length direction, and the extension direction of the tail extension seat is consistent with the length direction of the motor body.

2. The improved integrated servo motor as set forth in claim 1, wherein: at least one circuit board unit for driving the motor body to execute actions is arranged in the tail extension seat.

3. The improved integrated servo motor as set forth in claim 2, wherein: the mounting direction of the circuit board unit is consistent with the length direction of the motor body.

4. The improved integrated servo motor as set forth in claim 1, wherein: the cross section of the tail extension seat is consistent with the shape and the size of the cross section of the motor body.

5. The improved integrated servo motor as set forth in claim 2, wherein: the tail extension seat is composed of an upper shell and a lower shell which are symmetrically arranged, and the upper shell and the lower shell are detachably mounted on the motor body.

6. The improved integrated servo motor as set forth in claim 5, wherein: the cross sections of the upper shell and the lower shell are provided with at least one elongated mounting hole, the motor body is correspondingly provided with a plurality of bolt pieces which penetrate from one side of the power output end to the other side and extend out, and the upper shell and the lower shell are fastened with the bolt pieces through the respective elongated mounting holes.

7. The improved integrated servo motor as set forth in claim 6, wherein: the motor body is provided with an encoder with a section smaller than that of the motor body on one side opposite to the power output end, the inner sides of the upper shell and the lower shell are respectively provided with an accommodating cavity for accommodating the encoder, and the circuit board unit is arranged in the accommodating cavity and is positioned on the other side of the encoder.

8. The improved integrated servo motor as set forth in claim 7, wherein: and the upper shell and the lower shell are provided with heat dissipation structures on the opposite sides of the accommodating cavities.

9. The improved integrated servo motor as set forth in claim 8, wherein: the upper shell and the lower shell are aluminum alloy shells, and the heat dissipation structure comprises a plurality of heat dissipation fins which are arranged at intervals.

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