CN214154306U

CN214154306U - DC motor

Info

Publication number: CN214154306U
Application number: CN202022812768.2U
Authority: CN
Inventors: 邓振宇; 高曾发; 梁定楷; 谢有鑫; 黄少权; 郭楚铙; 文源卿; 张恩民; 严浩东; 张谕淇; 邓宝清
Original assignee: Zhuhai College of Jilin University
Current assignee: Zhuhai College of Jilin University
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-09-07
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a direct current motor, which comprises a rotor, electrically conductive pivot, first conducting ring and second conducting ring, the rotor is provided with the coil, electrically conductive pivot is worn to locate the rotor, electrically conductive pivot is provided with the first conductive part and the second conductive part of mutual isolation, the tip of electrically conductive pivot is provided with first conductive gear, first conductive gear is provided with the third conductive part and the fourth conductive part of mutual isolation, first conductive part and second conductive part respectively with the both ends electric connection of coil, first conducting ring rotates and is connected with the electrically conductive gear of second, and be connected through the electrically conductive gear of second and the meshing of first conductive gear, the second conducting ring rotates and is connected with the electrically conductive gear of third, and be connected through the electrically conductive gear of third and the meshing of first conductive gear. This embodiment is electrically conducted through electrically conductive pivot to through the electrically conductive gear of second and the electrically conductive gear of third mesh with first electrically conductive gear respectively, can ensure that the contact is good, can improve the bad contact phenomenon between the solid brush of traditional motor and the commutator.

Description

DC motor

Technical Field

The utility model relates to the technical field of motors, in particular to direct current motor.

Background

At present, a commutator of a brushed direct current motor is generally in a ring structure with a smooth surface, and after the brushed direct current motor is used for a long time, a solid electric brush is worn due to friction with the commutator, so that a gap exists between the solid electric brush and the commutator, and poor contact is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a direct current motor can improve the phenomenon of contact failure between solid brush and the commutator.

The direct current motor according to the embodiment of the utility model comprises a rotor provided with a coil; the coil comprises a conductive rotating shaft, a first conductive part and a second conductive part which are isolated from each other, wherein a first conductive gear is arranged at the end part of the conductive rotating shaft, the first conductive gear is provided with a third conductive part and a fourth conductive part which are isolated from each other, the third conductive part and the fourth conductive part are respectively matched with the first conductive part and the second conductive part, and the first conductive part and the second conductive part are respectively electrically connected with two ends of the coil; the first conducting ring is rotatably connected with a second conducting gear and is in meshed connection with the first conducting gear through the second conducting gear; and the second conducting ring is rotatably connected with a third conducting gear and is in meshed connection with the first conducting gear through the third conducting gear.

According to the utility model discloses direct current motor has following beneficial effect at least:

this embodiment conducts electricity through electrically conductive pivot to through the electrically conductive gear of second and the electrically conductive gear of third mesh with first electrically conductive gear respectively, can ensure that the contact is good, can improve the bad contact phenomenon between the solid brush of traditional motor and the commutator.

According to the utility model discloses a some embodiments, DC motor still includes sealed air chamber, sealed air chamber intussuseption is filled with insulating protective gas or evacuation, first electrically conductive gear the electrically conductive gear of second with the electrically conductive gear of third all is located in sealed air chamber.

According to some embodiments of the invention, the insulating protective gas is sulfur hexafluoride or nitrogen.

According to some embodiments of the present invention, the conductive shaft and the sealing air chamber are connected with a shaft seal therebetween.

According to some embodiments of the utility model, be provided with first fixed bolster in the sealed air chamber, be provided with on the first fixed bolster with the first electrically conductive axle of first conducting ring electric connection, the electrically conductive gear of second rotates and installs on the first electrically conductive axle.

According to the utility model discloses a some embodiments, be provided with the second fixed bolster in the sealed air chamber, be provided with on the second fixed bolster with second conducting ring electric connection's the electrically conductive axle of second, the electrically conductive gear of third rotates and installs on the electrically conductive axle of second.

According to some embodiments of the utility model, direct current motor still establishes including the cover the stator in the rotor outside, be connected with the bearing on the stator, and pass through the bearing with electrically conductive pivot is connected.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is one of schematic internal structural diagrams of a dc motor according to an embodiment of the present invention;

FIG. 2 is an enlarged fragmentary view of encircled portion A of FIG. 1;

fig. 3 is a second schematic diagram of the internal structure of the dc motor according to the embodiment of the present invention;

fig. 4 is a third schematic view of an internal structure of a dc motor according to an embodiment of the present invention;

fig. 5 is a fourth schematic diagram of the internal structure of the dc motor according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If any description to first, second and third is only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the present embodiment discloses a dc motor, including a rotor 100, a conductive rotating shaft 200, a first conductive ring 300 and a second conductive ring 400, wherein the rotor 100 is provided with a coil 110, the conductive rotating shaft 200 is located at one side of the rotor 100 or passes through the rotor 100, the conductive rotating shaft 200 is provided with a first conductive part 201 and a second conductive part 202 which are isolated from each other, an end of the conductive rotating shaft 200 is provided with a first conductive gear 210, the first conductive gear 210 is provided with a third conductive part 211 and a fourth conductive part 212 which are isolated from each other, the third conductive part 211 and the fourth conductive part 212 are respectively matched with the first conductive part 201 and the second conductive part 202, the first conductive part 201 is electrically connected with one end of the coil 110, the second conductive part 202 is electrically connected with the other end of the coil 110, the first conductive ring 300 is rotatably connected with the second conductive gear 310 and meshed with the first conductive gear 210 through the second conductive gear 310, the second conductive ring 400 is rotatably connected to a third conductive gear 410, and is engaged with the first conductive gear 210 through the third conductive gear 410, wherein the first conductive ring 300 and the second conductive ring 400 are respectively connected to the positive and negative poles of the power supply. In the present embodiment, first conducting portion 201 and second conducting portion 202 of conducting rotating shaft 200 are arranged in mirror symmetry, first conducting portion 201 and second conducting portion 202 are connected through insulator 203, conducting rotating shaft 200 rotates with rotor 100 in use, and it is contemplated that conducting rotating shaft 200 and rotor 100 may be connected through a bushing.

In the embodiment, the conductive shaft 200 conducts electricity, and the second conductive gear 310 and the third conductive gear 410 are respectively meshed with the first conductive gear 210, so that good contact can be ensured, the function of motor commutation is not affected, and the phenomenon of poor contact between a solid brush and a commutator of a traditional motor can be improved.

Referring to fig. 3, the dc motor further includes a sealed air chamber 500, the sealed air chamber 500 is filled with insulating protective gas or vacuumized, and the first conductive gear 210, the second conductive gear 310 and the third conductive gear are all located in the sealed air chamber 500, so that electric arcs generated during the rotation of the first conductive gear 210, the second conductive gear 310 and the third conductive gear 410 can be reduced, which is beneficial to improving the safety of use. Specifically, the insulating protective gas is sulfur hexafluoride or nitrogen, so that the insulating property is good, the insulating protective gas is common protective gas, and the production cost is favorably reduced. It is contemplated that the sealed air chamber 500 is provided with an inflation port through which inflation or deflation may be performed.

Referring to fig. 4, in order to improve the air tightness between the conductive rotating shaft 200 and the sealing air chamber 500, a shaft seal 510 is connected between the conductive rotating shaft 200 and the sealing air chamber 500, so that the insulating protection gas can be prevented from leaking from the gap between the conductive rotating shaft 200 and the sealing air chamber 500, which is beneficial to improving the reliability of the product.

Referring to fig. 4, a first fixing bracket 520 is disposed in the airtight chamber 500, a first conductive shaft (not shown) electrically connected to the first conductive ring 300 is disposed on the first fixing bracket 520, the second conductive gear 310 is rotatably mounted on the first conductive shaft, when in use, the second conductive gear 310 rotates relative to the first conductive shaft, and under the action of gravity, the second conductive gear 310 always keeps good contact with the first conductive shaft, so that even if the second conductive gear 310 and the first conductive shaft are worn away after long-term use, the conductivity between the two shafts is not affected.

Similarly, a second fixing support 530 is disposed in the sealing air chamber 500, a second conductive shaft (not shown) electrically connected to the second conductive ring 400 is disposed on the second fixing support 530, the third conductive gear 410 is rotatably mounted on the second conductive shaft, and the second conductive shaft and the third conductive gear 410 are in good contact with each other, which is beneficial to improving the reliability of the product.

Referring to fig. 5, the dc motor further includes a stator 600 disposed outside the rotor 100, and the stator 600 is connected to a bearing (not shown), such as a ball bearing, and is connected to the conductive rotating shaft 200 through the bearing.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A direct current motor, comprising:

a rotor (100) provided with a coil (110);

the coil comprises a conductive rotating shaft (200), wherein the conductive rotating shaft (200) is provided with a first conductive part (201) and a second conductive part (202) which are isolated from each other, the end part of the conductive rotating shaft (200) is provided with a first conductive gear (210), the first conductive gear (210) is provided with a third conductive part (211) and a fourth conductive part (212) which are isolated from each other, the third conductive part (211) and the fourth conductive part (212) are respectively matched with the first conductive part (201) and the second conductive part (202), and the first conductive part (201) and the second conductive part (202) are respectively electrically connected with two ends of the coil (110);

the first conductive ring (300) is rotatably connected with a second conductive gear (310) and is meshed with the first conductive gear (210) through the second conductive gear (310);

and the second conductive ring (400) is rotatably connected with a third conductive gear (410) and is meshed with the first conductive gear (210) through the third conductive gear (410).

2. The direct current motor according to claim 1, further comprising a sealed air chamber (500), wherein the sealed air chamber (500) is filled with an insulating protective gas or evacuated, and the first conductive gear (210), the second conductive gear (310) and the third conductive gear (410) are all located in the sealed air chamber (500).

3. The direct current motor according to claim 2, wherein the insulating protective gas is sulfur hexafluoride or nitrogen.

4. The direct current motor according to claim 2 or 3, wherein a shaft seal (510) is connected between the conductive rotating shaft (200) and the sealed air chamber (500).

5. The direct current motor according to claim 2, wherein a first fixed support (520) is disposed in the hermetic chamber (500), a first conductive shaft electrically connected to the first conductive ring (300) is disposed on the first fixed support (520), and the second conductive gear (310) is rotatably mounted on the first conductive shaft.

6. The direct current motor according to claim 2 or 5, wherein a second fixing support (530) is arranged in the airtight chamber (500), a second conductive shaft electrically connected with the second conductive ring (400) is arranged on the second fixing support (530), and the third conductive gear (410) is rotatably mounted on the second conductive shaft.

7. The direct current motor according to claim 1, further comprising a stator (600) sleeved outside the rotor (100), wherein the stator (600) is connected with a bearing and is connected with the conductive rotating shaft (200) through the bearing.