CN218449791U

CN218449791U - Miniature high-voltage direct-current motor

Info

Publication number: CN218449791U
Application number: CN202222190696.1U
Authority: CN
Inventors: 潘耀典; 刘汉忠
Original assignee: Shenzhen Chengfang Electric Machine Co ltd
Current assignee: Shenzhen Chengfang Electric Machine Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-02-03
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a miniature high voltage direct current motor, include: the circuit board is provided with a rectifier bridge circuit, a thermistor, a first inductor, a second inductor and an X capacitor; the circuit board is further provided with a first lead and a second lead, the first lead is connected with the thermistor in series and is connected with the input end of the rectifier bridge circuit, the positive pole of the rectifier bridge circuit is connected with the first inductor, the first inductor is electrically connected with the end cover, the negative pole of the rectifier bridge circuit is connected with the second inductor, the second inductor is electrically connected with the end cover, and the X capacitor is in bridge connection with the first lead and the second lead. Design more than adopting, through set up the PCBA subassembly on the end cover, need not to set up special full wave rectifier circuit, reduce the volume of motor, and the quality is light, and efficient, satisfies the user demand in market.

Description

Miniature high-voltage direct-current motor

Technical Field

The invention relates to the technical field of motors, in particular to a miniature high-voltage direct-current motor.

Background

In the white household appliance market, pumps, dust collectors and other rope electric appliances generally adopt 110 VAC-240 ACV alternating current to work, the traditional motor generally adopts an alternating current single-phase series motor, and the series motor is large in size, heavy in mass and low in efficiency; the use of the hand-held product is limited, and the market requirements of energy conservation, environmental protection and light weight are not met. The demand for small, light and efficient miniature high-voltage direct-current motors in the market is increasing day by day.

In the existing solution, if a customer wants to use a small-sized direct current motor, the customer needs to configure an alternating current rectification circuit by himself and then connects alternating current into the direct current motor after rectification, so that a special full-wave rectification circuit must be added outside the motor, the volume of the product must be increased, the assembly space is increased, the appearance and consistency of the product are affected, the function is single, and the EMI effect is poor.

Therefore, it is needed to design a micro high voltage dc motor to overcome the disadvantages of the prior art.

Disclosure of Invention

The utility model discloses a reach the technical scheme that above-mentioned technical purpose adopted and be: a miniature high voltage dc motor, comprising: the circuit board is provided with a rectifier bridge circuit, a thermistor, a first inductor, a second inductor and an X capacitor; the circuit board is further provided with a first lead and a second lead, the first lead is connected with the thermistor in series and is connected with the input end of the rectifier bridge circuit, the positive pole of the rectifier bridge circuit is connected with the first inductor, the first inductor is electrically connected with the end cover, the negative pole of the rectifier bridge circuit is connected with the second inductor, the second inductor is electrically connected with the end cover, and the X capacitor is in bridge connection with the first lead and the second lead.

In a preferred embodiment, a first terminal is disposed on one side of the end cap, a second terminal is disposed on the other side of the end cap, a positive carbon brush, a negative carbon brush, a positive brush arm and a negative brush arm are further disposed in the end cap, the first inductor is electrically connected to the first terminal, the second inductor is electrically connected to the second terminal, the positive brush arm is electrically connected to the positive carbon brush, the first terminal is electrically connected to the positive brush arm, the negative brush arm is electrically connected to the negative carbon brush, and the second terminal is electrically connected to the negative brush arm.

In a preferred embodiment, a rotor is further arranged in the motor shell, and one end of the rotor, which is adjacent to the end cover, is provided with a commutator segment, and the commutator segment is respectively contacted with the positive carbon brush and the negative carbon brush.

In a preferred embodiment, the end cap is further provided with a first Y capacitor and a second Y capacitor, one pin of the first Y capacitor is electrically connected to the first terminal, the other pin of the first Y capacitor is connected to the motor housing, one pin of the second Y capacitor is electrically connected to the second terminal, and the other pin of the second Y capacitor is connected to the motor housing.

In a preferred embodiment, the end cap is further provided with a cover plate, the cover plate is located above the circuit board, the cover plate is provided with a reverse buckle, the cover plate is buckled with the circuit board through the reverse buckle, the cover plate is further provided with two lead buckles, and the first lead and the second lead respectively penetrate out of the cover plate through the corresponding lead buckles.

The beneficial effects of the utility model are that: through set up the PCBA subassembly on the end cover, need not to set up special full wave rectifier circuit, reduce the volume of motor, and the quality is light, and efficiency is high-efficient, satisfies the user demand in market.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a plan view of the circuit board of the present invention;

fig. 4 is a plan view of the end cap of the present invention;

fig. 5 is a cross-sectional view of the rotor of the present invention;

fig. 6 is a schematic structural diagram of the cover plate of the present invention.

In the figure:

10. a motor housing; 11. a rotor; 12. a commutator; 13. an end cap; 131. a first terminal; 132. a second terminal; 133. a positive electrode carbon brush; 134. a negative carbon brush; 135. a positive electrode brush arm; 136. a negative electrode brush arm; 137. a first Y capacitor; 138. a second Y capacitor; 14. a circuit board; 141. a rectifier bridge circuit; 142. a thermistor; 143. a first inductor; 144. a second inductor; 145. an X capacitor; 146. a first lead; 147. a second lead; 15. a cover plate; 151. reversing; 152. and (6) a lead wire buckle.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1-6, the utility model provides a miniature high voltage direct current motor, its characterized in that includes: the motor comprises a motor shell 10, wherein one end of the motor shell 10 is provided with an end cover 13, the end cover 13 is provided with a circuit board 14, and the circuit board 14 is provided with a rectifier bridge circuit 141, a thermistor 142, a first inductor 143, a second inductor 144 and an X capacitor 145; the circuit board 14 is further provided with a first lead 146 and a second lead 147, the first lead 146 is connected in series with the thermistor 142 and is connected to an input end of the rectifier bridge circuit 141, an anode of the rectifier bridge circuit 141 is connected to the first inductor 143, the first inductor 143 is electrically connected to the end cap 13, a cathode of the rectifier bridge circuit 141 is connected to the second inductor 144, the second inductor 144 is electrically connected to the end cap 13, the X capacitor 145 is connected across the first lead 146 and the second lead 147, specifically, the motor housing 10 is a stator, alternating current is input from the first lead 146 and the second lead 147, rectified by the rectifier bridge circuit 141 to be converted into direct current, and output to the end cap 13, the end cap 13 is in contact with the rotor 11 in the motor housing 10 to realize conduction, and the X capacitor 145 is used as a filter device for eliminating differential mode interference of the motor.

Further, in this embodiment, a first terminal 131 is disposed on one side of the end cover 13, and a second terminal 132 is disposed on the other side of the end cover 13, a positive electrode carbon brush 133, a negative electrode carbon brush 134, a positive electrode brush arm 135 and a negative electrode brush arm 136 are further disposed in the end cover 13, the first inductor 143 is electrically connected to the first terminal 131, the second inductor 144 is electrically connected to the second terminal 132, the positive electrode brush arm 135 is electrically connected to the positive electrode carbon brush 133, the first terminal 131 is electrically connected to the positive electrode brush arm 135, the negative electrode brush arm 136 is electrically connected to the negative electrode carbon brush 134, the second terminal 132 is electrically connected to the negative electrode brush arm 136, specifically, the first terminal 131 is electrically connected to a positive electrode of the rectifier bridge circuit 141, the second terminal 132 is electrically connected to a negative electrode of the rectifier bridge circuit 141, the positive electrode carbon brush 133 and the negative electrode carbon brush 134 are respectively in contact with the rotor 11, and the first terminal electron and the second terminal electron are respectively connected to the positive electrode carbon brush arm 133 and the negative electrode carbon brush arm 136 through the corresponding positive electrode brush arm 135 and negative electrode brush arm 136, so that the direct current flows into the rotor 11 to facilitate rotation of the rotor 11.

Further, still be equipped with rotor 11 in the motor housing 10, rotor 11 is close to the one end of end cover 13 is equipped with 12 pieces of commutator, 12 pieces of commutator respectively with positive pole carbon brush 133 with negative pole carbon brush 134 contact, the one end that rotor 11 is close to end cover 13 is equipped with 12 pieces of commutator, and the middle part of rotor 11 is equipped with coil winding, and coil winding is connected with 12 pieces of electricity of commutator, and when rotor 11 was installed in motor housing 10, 12 pieces of commutator contacted with positive pole carbon brush 133 and negative pole carbon brush 134, realized that the circuit switches on, after first lead wire 146 and second lead wire 147 connect the power, input to coil winding after being converted into the direct current through rectifier bridge circuit 141, made rotor 11 rotate.

Further, in this embodiment, the end cap 13 is further provided with a first Y capacitor 137 and a second Y capacitor 138, one pin of the first Y capacitor 137 is electrically connected to the first terminal 131, the other pin of the first Y capacitor 137 is connected to the motor housing 10, one pin of the second Y capacitor 138 is electrically connected to the second terminal 132, and the other pin of the second Y capacitor 138 is connected to the motor housing 10, specifically, the two Y capacitors are used to eliminate common mode interference of the motor and improve EMI of the motor, one pin of the first Y capacitor 137 is electrically connected to the first terminal 131, and the other pin is pressed between the end cap 13 and the motor housing 10 through interference fit between the end cap 13 and the side wall of the motor housing 10 when the end cap 13 is disposed in the motor housing 10, so as to be connected to the motor housing 10, and so is the second Y capacitor 138.

Further, in this embodiment, a cover plate 15 is further disposed on the end cover 13, the cover plate 15 is located above the circuit board 14, the cover plate 15 is provided with an inverted buckle 151, the cover plate 15 is fastened to the circuit board 14 through the inverted buckle 151, two lead buckles 152 are further disposed on the cover plate 15, the first lead 146 and the second lead 147 respectively penetrate out of the cover plate 15 through the corresponding lead buckles 152, specifically, the circuit board 14 and the end cover 13 are welded and fixed, the cover plate 15 is buckled on the circuit board 14 through the two inverted buckles 151 for positioning, the first lead 146 and the second lead 147 respectively penetrate out of the cover plate 15 through the lead buckles 152 to be connected with an external power supply, and the lead buckles 152 can also be used for limiting the first lead 146 and the second lead 147, so that the first lead 146 and the second lead 147 are prevented from being pulled off in the using process to affect the use of the product, and the safety of the product is increased.

To sum up, the utility model discloses a set up the PCBA subassembly on the end cover, need not to set up special full wave rectifier circuit, reduce the volume of motor, and the quality is light, and efficiency is high-efficient, satisfies the user demand in market.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A miniature high voltage dc motor, comprising: the circuit board is provided with a rectifier bridge circuit, a thermistor, a first inductor, a second inductor and an X capacitor; the circuit board is further provided with a first lead and a second lead, the first lead is connected with the thermistor in series and is connected with the input end of the rectifier bridge circuit, the positive pole of the rectifier bridge circuit is connected with the first inductor, the first inductor is electrically connected with the end cover, the negative pole of the rectifier bridge circuit is connected with the second inductor, the second inductor is electrically connected with the end cover, and the X capacitor is in bridge connection with the first lead and the second lead.

2. The micro high voltage direct current motor of claim 1, wherein a first terminal is disposed on one side of the end cap, a second terminal is disposed on the other side of the end cap, a positive carbon brush, a negative carbon brush, a positive brush arm, and a negative brush arm are further disposed in the end cap, the first inductor is electrically connected to the first terminal, the second inductor is electrically connected to the second terminal, the positive brush arm is electrically connected to the positive carbon brush, the first terminal is electrically connected to the positive brush arm, the negative brush arm is electrically connected to the negative carbon brush, and the second terminal is electrically connected to the negative brush arm.

3. The micro high voltage direct current motor of claim 2, wherein a rotor is further disposed in the motor housing, and a commutator segment is disposed at an end of the rotor adjacent to the end cover, and the commutator segment is in contact with the positive carbon brush and the negative carbon brush respectively.

4. The micro high-voltage direct current motor according to claim 2, wherein a first Y capacitor and a second Y capacitor are further arranged on the end cover, one pin of the first Y capacitor is electrically connected with the first terminal, the other pin of the first Y capacitor is connected with the motor housing, one pin of the second Y capacitor is electrically connected with the second terminal, and the other pin of the second Y capacitor is connected with the motor housing.

5. The micro high-voltage direct current motor according to claim 1, wherein a cover plate is further arranged on the end cover, the cover plate is located above the circuit board, the cover plate is provided with an inverted buckle, the cover plate is fastened with the circuit board through the inverted buckle, the cover plate is further provided with two lead buckles, and the first lead and the second lead respectively penetrate out of the cover plate through the corresponding lead buckles.