Graphite long carbon brush cooling fan with carbon powder cleaning function

Abstract

The utility model discloses a graphite long carbon brush cooling fan with carbon powder cleaning function, include: integral unit, it includes the protection cover and the motor frame fixed in it, one side of motor frame is fixed with servo motor, one side fixed with the shaft sleeve of servo motor, the output of servo motor passes through the shaft sleeve and is fixed with the disc, one side of disc is fixed with the fan blade through bolt, set up carbon brush setting unit on the shaft sleeve, carbon brush setting unit is used for setting up carbon brush, set up cleaning unit on the shaft sleeve, cleaning unit includes collection part and scraping part, and scraping part is used for scraping the carbon powder in the shaft sleeve. The utility model discloses through scraping part can scrape the carbon powder in the shaft sleeve, and the carbon powder after falling can be collected and discharged by collection part, thereby to clean the commutator in the shaft sleeve, and guarantee the efficiency of fan blade rotation.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush technology, and in particular to a graphite long carbon brush cooling fan with carbon powder cleaning function. Background Technology

[0002] Carbon brushes, also known as electric brushes, are made primarily of graphite, resin-impregnated graphite, and metallic graphite. They are devices that transmit energy or signals between the stationary and rotating parts of an electric motor, generator, or other rotating machinery. Generally made of pure carbon with a coagulant, they are mounted on a metal bracket and have springs inside that press them firmly against the commutator. When the motor rotates, it transmits electrical energy to the coils through the commutator. Because their main component is carbon, they are called carbon brushes. They are prone to wear and should be regularly maintained, replaced, and cleaned.

[0003] The commutator of the motor inside the cooling fan is usually equipped with two or more sets of carbon brushes. During the continuous rotation of the commutator, the carbon brushes maintain frictional contact with the commutator surface. After long-term operation, the carbon brushes wear down and the carbon powder produced will accumulate at the commutator. Due to the closed structure of the commutator, it is difficult to completely remove the carbon powder. As carbon powder continues to accumulate around the commutator, it will not only increase the commutator's operating resistance, but may also cause problems such as poor contact and accelerated component wear, thereby affecting the operating efficiency of the cooling fan. Therefore, a graphite long carbon brush cooling fan with carbon powder cleaning function is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned graphite long carbon brush cooling fan with toner cleaning function, we propose this utility model.

[0006] Therefore, the purpose of this utility model is to provide a graphite long carbon brush cooling fan with carbon powder cleaning function, which is suitable for solving the problem that carbon powder generated by carbon brushes will accumulate at the commutator. Due to the closed structure of the commutator, it is difficult to completely remove the carbon powder inside the bushing. This not only increases the running resistance of the commutator, but also affects the operating efficiency of the cooling fan.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a graphite long carbon brush cooling fan with toner cleaning function, comprising:

[0008] The overall unit includes a protective cover and a motor frame fixed inside it. A servo motor is fixed to one side of the motor frame, and a bushing is fixed to one side of the servo motor. The output end of the servo motor passes through the bushing and is fixed to a disc. A fan blade is fixed to one side of the disc by bolts.

[0009] A carbon brush mounting unit is provided on the bushing, the carbon brush mounting unit being used to mount carbon brushes;

[0010] A cleaning unit is provided on the bushing, the cleaning unit includes a collection part and a scraping part, the scraping part is used to scrape off the carbon powder inside the bushing, and the collection part is used to collect and discharge the scraped carbon powder;

[0011] A support unit is installed inside the protective cover, which is used to support the output shaft of the servo motor.

[0012] As a preferred embodiment of the graphite long carbon brush cooling fan with carbon powder cleaning function described in this utility model, wherein: bearings are fixedly connected to both ends of the bushing, and the output shaft of the servo motor is interference-fitted with the inner rings of the two bearings.

[0013] As a preferred embodiment of the graphite long carbon brush cooling fan with carbon powder cleaning function described in this utility model, the carbon brush mounting unit includes two straight cylinders fixedly connected to the outer wall of the bushing. The inner cavities of the two straight cylinders are rectangular. Spring carbon brushes are slidably arranged in the two straight cylinders. One end of the two straight cylinders is threaded and threaded with a sealing cap.

[0014] As a preferred embodiment of the graphite long carbon brush cooling fan with carbon powder cleaning function described in this utility model, wherein: both ends of the straight cylinders are provided with notches, and the size of the notches does not exceed the thread of the straight cylinder.

[0015] As a preferred embodiment of the graphite long carbon brush cooling fan with toner cleaning function described in this utility model, the collecting part includes a collecting box fixedly connected to the bottom of the bushing, the bottom of the collecting box is fixedly connected to a discharge pipe, and the bottom end of the discharge pipe is threaded and threaded with a sealing cap.

[0016] As a preferred embodiment of the graphite long carbon brush cooling fan with toner cleaning function described in this utility model, the bottom of the collection box is designed in an inverted trapezoidal shape, and the discharge pipe is located at the lowest point of the bottom of the collection box.

[0017] As a preferred embodiment of the graphite long carbon brush cooling fan with toner cleaning function described in this utility model, the scraping part includes a rotating rod rotatably connected to one side of the collection box, one end of the rotating rod passing through the collection box and fixedly connected to a threaded rod, a scraper being slidably provided in the bushing and the collection box, a circular opening for fitting the commutator of the servo motor being provided on one side of the scraper, and one end of the threaded rod passing through the scraper and threadedly connected to the scraper.

[0018] As a preferred embodiment of the graphite long carbon brush cooling fan with carbon powder cleaning function described in this utility model, the support unit includes a support plate fixedly connected inside the protective cover, a bearing II is embedded in the support plate, and the output shaft of the servo motor is interference-fitted with the inner ring of the bearing II.

[0019] The beneficial effects of this utility model are as follows: the scraping part can scrape off the carbon powder inside the bushing, and the fallen carbon powder can be collected and discharged by the collecting part, thereby cleaning the commutator inside the bushing and ensuring the efficiency of the fan blade rotation. The support unit can reduce the load on the servo motor output shaft and ensure the stability of the fan blade rotation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the graphite long carbon brush cooling fan with carbon powder cleaning function proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the carbon brush mounting unit distribution proposed in this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the bushing and straight cylinder proposed in this utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the collection box proposed in this utility model. Attached image description:

[0026] 100. Overall unit; 101. Protective cover; 102. Motor frame; 103. Servo motor; 104. Bushing; 105. Disc; 106. Fan blade; 107. Bearing 1;

[0027] 200. Carbon brush mounting unit; 201. Straight cylinder; 202. Spring carbon brush; 203. Sealing cap; 204. Notch;

[0028] 300. Cleaning unit; 301. Collection section; 301a. Collection box; 301b. Discharge pipe; 301c. Sealing cover; 302. Scraping section; 302a. Rotating rod; 302b. Threaded rod; 302c. Scraper.

[0029] 400. Support unit; 401. Support plate; 402. Bearing II. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0033] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1

[0035] Reference Figures 1-4 The first embodiment of this utility model provides a graphite long carbon brush cooling fan with carbon powder cleaning function, which can clean the carbon powder accumulated in the bushing to ensure the rotation efficiency of the cooling fan. It includes: an overall unit 100, a carbon brush placement unit 200, a cleaning unit 300 and a support unit 400.

[0036] The overall unit 100 includes a protective cover 101 and a motor frame 102 fixed inside it. A servo motor 103 is fixed on one side of the motor frame 102, and a bushing 104 is fixed on one side of the servo motor 103. The output end of the servo motor 103 passes through the bushing 104 and is fixed with a disc 105. A fan blade 106 is fixed on one side of the disc 105 by bolts.

[0037] A carbon brush mounting unit 200 is provided on the bushing 104, and the carbon brush mounting unit 200 is used to mount carbon brushes;

[0038] A cleaning unit 300 is provided on the bushing 104. The cleaning unit 300 includes a collection part 301 and a scraping part 302. The scraping part 302 is used to scrape off the carbon powder inside the bushing 104, and the collection part 301 is used to collect and discharge the scraped carbon powder.

[0039] A support unit 400 is installed inside the protective cover 101. The support unit 400 is used to support the output shaft of the servo motor 103.

[0040] The motor frame 102 is used to support the servo motor 103. The protective cover 101 has protrusions with through holes on both sides. The protrusions can be used to fix the protective cover 101 to the equipment that needs heat dissipation and cooling or other designated positions through bolts and other connecting parts. The fan blades 106 can be installed and removed on the disc 105 through bolts. The servo motor 103 can drive the fan blades 106 to rotate through the disc 105. The commutator of the servo motor 103 is located on its own rotating shaft and is located in the bushing 104. The carbon brush mounting unit 200 is used to install carbon brushes and make the carbon brushes contact the commutator on the output shaft of the servo motor 103. When cleaning the carbon powder accumulated in the bushing 104, the carbon brushes are removed from the carbon brush mounting unit 200.

[0041] Subsequently, the scraping part 302 scrapes off the carbon powder attached to the inner wall of the bushing 104 and the commutator of the servo motor 103. The fallen carbon powder is collected and discharged by the collecting part 301, thereby cleaning the inside of the bushing 104 and ensuring the rotation efficiency of the fan blade 106. The support unit 400 can reduce the load on the output shaft of the servo motor 103 and reduce the vibration generated by the rotation of the output shaft of the servo motor 103, so as to ensure the stability of the rotation of the fan blade 106.

[0042] Example 2

[0043] Reference Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, bearings 107 are fixedly connected to both ends of the bushing 104, and the output shaft of the servo motor 103 is interference-fitted with the inner rings of the two bearings 107.

[0044] When the output shaft of the servo motor 103 rotates, the bearing 107 can prevent friction between the output shaft and the bushing 104, thereby reducing mechanical losses during the rotation of the output shaft.

[0045] Example 3

[0046] Reference Figure 2 and Figure 3 This is the third embodiment of the present invention. Unlike the previous embodiment, the carbon brush mounting unit 200 includes two straight cylinders 201 that are fixedly connected to the outer wall of the bushing 104. The inner cavities of the two straight cylinders 201 are both rectangular. Spring carbon brushes 202 are slidably installed in the two straight cylinders 201. One end of the two straight cylinders 201 is threaded and threaded with a sealing cap 203.

[0047] The sealing cover 203 can be rotated off, and then the spring carbon brush 202 is slid into the straight cylinder 201. The spring carbon brush 202 is a general standard part or a component known to those skilled in the art. The rectangular inner cavity of the straight cylinder 201 fits with the carbon block of the spring carbon brush 202. When the carbon block contacts the commutator of the servo motor 103, the sealing cover 203 is rotated and installed to the end of the straight cylinder 201. When cleaning the carbon powder in the bushing 104, the sealing cover 203 is removed. Then the spring of the spring carbon brush 202 pushes the metal piece connected to its end out of the straight cylinder 201 so that the spring carbon brush 202 can be taken out of the straight cylinder 201 and replaced.

[0048] It should be noted that both ends of the straight cylinders 201 are provided with notches 204, and the size of the notches 204 does not exceed the thread of the straight cylinder 201, so as to ensure that the sealing cap 203 can be rotated and fixed on the straight cylinder 201.

[0049] When the spring or metal piece of the spring carbon brush 202 is stuck in the inner cavity of the straight cylinder 201, a screwdriver or other thin rod-shaped object is used to insert into the straight cylinder 201 through the notch and pick the spring carbon brush 202 out of the straight cylinder 201 so as to quickly remove the spring carbon brush 202.

[0050] Example 4

[0051] Reference Figure 3 and Figure 4 This is the fourth embodiment of the present utility model. Unlike the previous embodiment, the collecting part 301 includes a collecting box 301a that is fixedly connected to the bottom of the bushing 104. The bottom of the collecting box 301a is fixedly connected to a discharge pipe 301b. The bottom end of the discharge pipe 301b is threaded and threadedly fitted with a sealing cap 301c.

[0052] After the fan blades 106 are removed and both spring carbon brushes 202 are taken out, the scraping part 302 is used to scrape off the carbon powder inside the bushing 104. The scraped carbon powder falls from the bushing 104 into the collection box 301a. Then, the sealing cover 301c at the bottom of the discharge pipe 301b is rotated off. Next, the collection box 301a is gently tapped to discharge the carbon powder inside the collection box 301a from the discharge pipe 301b. After the carbon powder is cleaned, the sealing cover 301c is rotated and installed at the bottom of the discharge pipe 301b.

[0053] It should be noted that the bottom of the collection box 301a is designed in an inverted trapezoidal shape, and the discharge pipe 301b is located at the lowest point of the bottom of the collection box 301a, so as to facilitate the discharge of materials by the discharge pipe 301b.

[0054] The bottom of the collection box 301a is an inverted trapezoid with both sides sloping towards the middle, so that the toner in the collection box 301a can automatically flow towards the discharge pipe 301b, so as to avoid dead corners in the collection box 301a and toner residue, and facilitate the rapid discharge of toner from the discharge pipe 301b.

[0055] The scraping part 302 includes a rotating rod 302a rotatably connected to one side of the collection box 301a. One end of the rotating rod 302a passes through the collection box 301a and is fixedly connected to a threaded rod 302b. The bushing 104 and the collection box 301a are slidably provided with a scraper 302c. One side of the scraper 302c has a circular opening that matches the commutator of the servo motor 103. One end of the threaded rod 302b passes through the scraper 302c and is threadedly connected to the scraper 302c.

[0056] Two limiting plates are provided on the rotating rod 302a, located on the inner and outer sides of the collection box 301a respectively. The rotating rod 302a is used to drive the threaded rod 302b to rotate. The scraper 302c contacts the inner wall of the bushing 104. The inner diameter of the circular opening of the scraper 302c is slightly larger than the diameter of the commutator of the servo motor 103, and the error is within three millimeters. By rotating the threaded rod 302b, the scraper 302c can move within the bushing 104 and the collection box 301a to scrape the carbon powder on the inner wall of the bushing 104 and the carbon powder attached to the commutator into the collection box 301a. After scraping is completed, the threaded rod 302b is rotated to move the scraper 302c to the end of the bushing 104 close to the servo motor 103 to prevent the scraper 302c from blocking the end of the straight cylinder 201.

[0057] Example 5

[0058] Reference Figure 2 This is the fifth embodiment of the present utility model. Unlike the previous embodiment, the support unit 400 includes a support plate 401 fixedly connected inside the protective cover 101. A bearing 402 is embedded in the support plate 401, and the output shaft of the servo motor 103 is interference-fitted with the inner ring of the bearing 402.

[0059] The support plate 401 is fixedly connected to the outer ring of the bearing 402, and there is a gap between the rotating rod 302a and the support plate 401 for the rotating rod 302a to rotate. The bearing 402 and the support plate 401 can support the output shaft of the servo motor 103 to ensure that the output shaft maintains a precise axial and radial position during high-speed rotation, avoids offset, vibration and other situations, and ensures the stability of the fan blade operation.

[0060] During use, first rotate and remove both sealing covers 203. Then slide the two spring carbon brushes 202 into the two straight cylinders 201 respectively. When the carbon block contacts the commutator of the servo motor 103, install the two sealing covers 203 onto the ends of the two straight cylinders 201. Then fix the fan blades 106 to the disc 105 with bolts. When it is necessary to clean the carbon powder in the bushing 104, remove the fan blades 106 from the disc 105. Then remove the two sealing covers 203 and take the two spring carbon brushes 202 out of the two straight cylinders 201. When the spring carbon brushes 202 are stuck in the inner cavity of the straight cylinder 201, use a screwdriver or other thin rod-shaped object to pick the spring carbon brushes 202 out of the straight cylinder 201 through the notch.

[0061] After removal, rotate and remove the sealing cap 301c. Then, drive the threaded rod 302b to rotate via the rotating rod 302a, causing the scraper 302c to move back and forth within the bushing 104. The scraper 302c scrapes the carbon powder on the inner wall of the bushing 104 and adhering to the commutator of the servo motor 103 into the collection box 301a. Then, gently tap the collection box 301a to discharge the carbon powder from the discharge pipe 301b. After the toner is cleaned, the sealing cap 301c is installed at the bottom of the discharge pipe 301b. Then, the threaded rod 302b is rotated to move the scraper 302c to the end of the bushing 104 near the servo motor 103. Then, the two spring carbon brushes 202 are slidably inserted into the two straight cylinders 201 respectively, and the two sealing caps 203 are reinstalled at the ends of the two straight cylinders 201. Finally, the fan blades 106 are fixed to the disc 105 with bolts.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A graphite long carbon brush cooling fan with carbon powder cleaning function, characterized in that, include: The overall unit (100) includes a protective cover (101) and a motor frame (102) fixed therein. A servo motor (103) is fixed on one side of the motor frame (102), and a bushing (104) is fixed on one side of the servo motor (103). The output end of the servo motor (103) passes through the bushing (104) and is fixed with a disc (105). A fan blade (106) is fixed on one side of the disc (105) by bolts. A carbon brush mounting unit (200) is provided on the bushing (104), the carbon brush mounting unit (200) being used to mount carbon brushes; A cleaning unit (300) is provided on the bushing (104). The cleaning unit (300) includes a collection part (301) and a scraping part (302). The scraping part (302) is used to scrape off the carbon powder inside the bushing (104), and the collection part (301) is used to collect and discharge the scraped carbon powder. A support unit (400) is provided inside the protective cover (101), the support unit (400) being used to support the output shaft of the servo motor (103).

2. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 1, characterized in that: The bushing (104) has bearings (107) fixedly connected to both ends, and the output shaft of the servo motor (103) is interference-fitted with the inner rings of the two bearings (107).

3. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 2, characterized in that: The carbon brush mounting unit (200) includes two straight cylinders (201) fixedly connected to the outer wall of the bushing (104). The inner cavities of the two straight cylinders (201) are rectangular. Spring carbon brushes (202) are slidably installed inside the two straight cylinders (201). One end of the two straight cylinders (201) is threaded and threaded with a sealing cap (203).

4. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 3, characterized in that: Both ends of the two straight cylinders (201) are provided with notches (204), and the size of the notches (204) does not exceed the thread of the straight cylinder (201).

5. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 3, characterized in that: The collecting part (301) includes a collecting box (301a) fixedly connected to the bottom of the bushing (104). The bottom of the collecting box (301a) is fixedly connected to a discharge pipe (301b). The bottom end of the discharge pipe (301b) is threaded and threadedly fitted with a sealing cap (301c).

6. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 5, characterized in that: The bottom of the collection box (301a) is designed in an inverted trapezoidal shape, and the discharge pipe (301b) is located at the lowest point of the bottom of the collection box (301a).

7. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 6, characterized in that: The scraping part (302) includes a rotating rod (302a) rotatably connected to one side of the collection box (301a). One end of the rotating rod (302a) passes through the collection box (301a) and is fixedly connected to a threaded rod (302b). The bushing (104) and the collection box (301a) are slidably provided with a scraper (302c). One side of the scraper (302c) is provided with a circular opening that matches the commutator of the servo motor (103). One end of the threaded rod (302b) passes through the scraper (302c) and is threadedly connected to the scraper (302c).

8. The graphite long carbon brush cooling fan with carbon powder cleaning function according to claim 7, characterized in that: The support unit (400) includes a support plate (401) fixedly connected inside the protective cover (101), and a bearing (402) is embedded in the support plate (401). The output shaft of the servo motor (103) is interference-fitted with the inner ring of the bearing (402).

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