Motor with T-shaped single bearing

Abstract

The present invention relates to a motor provided with a T-shaped single bearing for driving a fan or the like; the motor according to the present invention comprises: a rotor; the stator is arranged on one side of the rotor and wraps the rotor; the motor shaft penetrates through the centers of the rotor and the stator and is pressed into the rotor; the main bracket is arranged in a manner of wrapping the outer sides of the rotor and the stator and forms an appearance structure; the shell bracket is combined with one end of the main bracket so as to shield one side of the rotor and the stator; a bearing installed at the other end of the main bracket and rotatably supporting the motor shaft; and the cover is combined with the main support and wraps the side, provided with the bearing, of the main support. The bearing has the advantages that the concentricity, the squareness and the durability of the bearing are improved.

Description

Technical Field

[0001] The present invention relates to a motor, and more specifically, to a motor having a T-type single bearing for driving a fan, etc. Background Technology

[0002] The term "motor" usually refers to an electric motor.

[0003] An electric motor uses the force exerted on a conductor carrying an electric current in a magnetic field to convert electrical energy into mechanical motion; it is also known as an electric motor.

[0004] The motor is also used to generate rotational power to make the fan in refrigerators or air conditioners rotate.

[0005] The problem with this type of motor is that it generates noise and vibration due to rotation.

[0006] Therefore, to solve such problems, as shown in Publication No. 10-2010-0039163, vibration-damping rubber is also inserted to prevent vibration and noise.

[0007] However, despite these improvements, in traditional motor structures, there is a problem of coaxiality mismatch due to the bearings being located in two positions; in addition, there are problems of wear and continuous noise caused by insufficient lubrication.

[0008] Prior art literature Patent document: Korean Publication No. 10-2010-0039163 Summary of the Invention

[0009] The technical problem to be solved: Therefore, the purpose of this invention is to solve the above-mentioned problems in the prior art and provide a motor with a T-type single bearing.

[0010] Furthermore, another object of the present invention is to provide a motor supported by multiple support structures, thereby improving coaxiality and perpendicularity.

[0011] Furthermore, another object of the present invention is to provide a motor that can prevent oil leakage and thus provide continuous oil lubrication.

[0012] Solutions to technical problems: According to the features of the present invention, in order to achieve the above-mentioned objective, the motor of the present invention includes: a rotor 10; a stator 20 disposed on one side of the rotor 10 and enclosing the rotor 10; a motor shaft 30 disposed through the center of the rotor 10 and the stator 20 and pressed into the rotor 10; a main bracket 100 disposed in a manner that encloses the outside of the rotor 10 and the stator 20 and forms an external structure; a cover bracket 200 coupled to one end of the main bracket 100 to shield one side of the rotor 10 and the stator 20; a bearing 300 mounted on the other end of the main bracket 100 and rotatably supporting the motor shaft 30; and a cover 400 coupled to the main bracket 100 and enclosing the side of the main bracket 100 on which the bearing 300 is mounted.

[0013] Furthermore, the bearing 300 is T-shaped, and a felt 600 for supplying oil is provided on one side of the bearing 300.

[0014] A pair of washers 500 and 510 are provided on both sides of the bearing 300 to prevent oil leakage between the bearing 300 and the motor shaft 30. A blocking groove 340 is formed on one end face of the bearing 300, the blocking groove 340 being recessed inward, and at least one of the pair of washers 500 and 510 being located inside the blocking groove 340.

[0015] A support rib 430 protrudes from one end face of the cover 400, and the support rib 430 contacts one end of the bearing 300 and supports the bearing 300.

[0016] The effects of the invention: The motor of the present invention has the following effects.

[0017] First, the present invention includes a bearing, which has the advantage of simplifying assembly and preventing coaxiality issues by using a T-type single bearing.

[0018] Secondly, the motor of the present invention is equipped with bearings and a felt for supplying oil, which has the effect of continuously lubricating the motor shaft while maintaining a constant oil consumption, thereby preventing wear and noise on the motor shaft.

[0019] In addition, the T-type bearing of the present invention is fixed to the bracket by a cover and has at least three positions to support the bearing. Its advantage is that the bearing is not easy to move and the coaxiality and perpendicularity are improved.

[0020] Furthermore, in this invention, since the end of the cover is located inside the storage end of the main support, ultrasonic welding can be achieved. Its advantage is that the welded part is not exposed to the outside, thereby improving burrs and preventing burrs from being exposed to the outside. At the same time, the guide ribs improve the fixing effect of the cover and improve the fusion strength of ultrasonic welding.

[0021] Furthermore, in this invention, the internal shaft hole of the T-type single bearing is also provided with an enlarged portion, which has the effect of filling the enlarged portion with oil. The advantage is that the oil blocked by the washers on the left and right sides of the bearing can flow back into the shaft hole of the bearing, thereby being stored or used. Attached Figure Description

[0022] Figure 1 This is an exploded perspective view of the motor of the present invention in a preferred embodiment.

[0023] Figure 2 This is a cross-sectional view of the internal structure of the motor in a preferred embodiment of the present invention.

[0024] Figure 3 This is a perspective view showing the detailed structure of the main support in an embodiment of the present invention.

[0025] Figure 4 This is a perspective view showing the detailed structure of the cover according to an embodiment of the present invention.

[0026] Figure 5 The figures show a perspective view (a) and a cross-sectional view (b) of the bearing according to an embodiment of the present invention. Detailed Implementation

[0027] Hereinafter, the motor according to the present invention will be described in detail with reference to the accompanying drawings.

[0028] Figures 1 to 5 The diagram shows the structure of one embodiment of the motor of the present invention. Wherein, Figure 1 and Figure 2 The figures shown are an exploded perspective view and a front cross-sectional view of a preferred embodiment of the motor of the present invention. Figure 3 and Figure 4 The figure shown is a detailed three-dimensional view of the main support and cover according to an embodiment of the present invention. Figure 5 The figures shown are a perspective view and a front cross-sectional view of the bearing according to an embodiment of the present invention.

[0029] As shown in the accompanying drawings, the motor of the present invention includes: a rotor 10; a stator 20 that encloses the rotor 10; a motor shaft 30 that is pressed into the rotor 10; a main support 100 that is arranged to enclose the rotor 10 and the stator 20 to form an external structure; a housing support 200 that is combined with the main support 100 to shield one side of the rotor 10 and the stator 20; a bearing 300 that is mounted on the other end of the main support 100 and rotatably supports the motor shaft 30; and a cover 400 that is combined with the main support 100 and encloses the side of the main support 100 on which the bearing 300 is mounted.

[0030] The rotor 10 is a component that performs rotational motion, specifically a rotating element or a rotating body; the stator 20 is composed of coils for generating a rotating magnetic field and stacked iron cores, and is disposed on the outside of the rotor 10, thereby enclosing the rotor 10.

[0031] The structure and function of the rotor 10 and stator 20 described above are similar to those of the rotor and stator that constitute a conventional motor, and are widely used, so a detailed description is omitted here.

[0032] The motor shaft 30 is disposed through the center of the rotor 10 and the stator 20, and can be pressed into the rotor 10.

[0033] As shown in the figure, the motor shaft 30 can be formed as a long cylindrical body with a specified diameter.

[0034] As shown in the figure, the main support 100 is preferably configured to wrap around the outside of the rotor 10 and the stator 20 to form the overall appearance structure of the motor of the present invention.

[0035] As shown in the figure, in this invention, the main support 100 is structured to wrap around the right side, front and back, and top and bottom of the rotor 10 and stator 20.

[0036] Upon closer inspection, the main support 100 may include: a body portion 110, which is formed in a cylindrical shape to enclose the outside of the stator 20; and a shielding portion 120, which is disposed on the right side of the body portion 110 (e.g., Figure 1 and Figure 3 As shown in the figure, to provide a shield; a fastening portion 130 is formed which extends radially vertically from the left edge of the body portion 110.

[0037] The main support 100 may also have a receiving end 140 for accommodating the cover 400.

[0038] Upon closer inspection, the main support 100 also has an outwardly protruding storage end 140 (e.g., on the shielding portion 120). Figure 3(As shown on the right).

[0039] As shown in the figure, the receiving end 140 can be formed into a circular ring shape and form a structure with a specific height (length).

[0040] A bearing mounting portion 150 is integrally formed on the main support 100. As shown in the figure, the bearing mounting portion 150 is formed into a cylinder with specific dimensions, and is preferably disposed on the inner side of the body portion 110.

[0041] Preferably, the bearing mounting portion 150 is formed to have a shape and size corresponding to the main body portion 310 of the bearing 300 described below. Based on this, as shown in the figure, the main body portion 310 of the bearing 300 described below is inserted into and mounted on the inner side of the bearing mounting portion 150.

[0042] A guide rib 160 is also formed within the shielding portion 120 of the main support 100.

[0043] As shown in the figure, the guide rib 160 is disposed on the inner side of the receiving end 140, and is preferably formed to protrude to the right from the right side of the blocking portion 120 (e.g., Figure 3 (As shown).

[0044] Preferably, the guide rib 160 is the same as the receiving end 140, and it is formed in a ring shape, and as shown in the figure, its height (i.e. the right protrusion length) is smaller than that of the receiving end 140.

[0045] Preferably, there is a predetermined interval between the guide rib 160 and the receiving end 140, as shown in the figure, at the end of the connecting end 420 of the cover 400 described below (e.g. Figure 2 and Figure 4 The left end shown is located between the guide rib 160 and the receiving end 140, and can be fixed by ultrasonic welding or the like.

[0046] The outer casing bracket 200 can be combined with the main bracket 100 to shield the left side of the rotor 10 and stator 20 (e.g., Figure 1 and Figure 2 As shown in the figure, this forms the appearance structure.

[0047] Inside the housing support 200 (e.g.) Figure 1 and Figure 2 The right side shown in the diagram can be further equipped with a PCB 40 composed of electronic components, etc.

[0048] The cover 400 is attached to the right side of the main bracket 100 and to the right side of the bearing 300 mounted on the main bracket 100 (e.g., Figure 2 As shown, the package is wrapped.

[0049] The cover 400 may include: a shielding plate 410, which is formed in a disc shape to shield the right side of the bearing 300 mounted on the main bracket 100; and a mating end 420, which extends from the edge of the shielding plate 410 to the left (e.g., ...). Figure 4 (As shown) Elongation formation.

[0050] Furthermore, on one end face of the cover 400 (e.g.) Figure 2 and Figure 4 A support rib 430 may protrude from the left side (as shown), and the support rib 430 is connected to one end of the bearing 300 (e.g., Figure 2 The right end shown contacts and supports bearing 300.

[0051] Upon closer inspection, support ribs 430 can be further provided on the shielding plate 410 of the cover 400.

[0052] As shown in the figure, the support rib 430 extends from the inner surface of the baffle 410 at a specific height (e.g., Figure 2 and Figure 4 The left side (shown) protrudes to the left, and its function is to contact the outer surface of the right end of the head 320 of the bearing 300 described below, thereby supporting the bearing 300.

[0053] A through-hole 440 is formed at the center of the shielding plate 410. The inner diameter of the through-hole 440 is larger than the outer diameter of the motor shaft 30.

[0054] The bearing 300 can be installed at one end of the main bracket 100, and its function is to rotatably support the motor shaft 30.

[0055] The bearing 300 can be formed into a T-shaped structure.

[0056] Upon closer inspection, the bearing 300 may include: a main body 310, which is inserted into the bearing mounting portion 150; and a head 320, which is located at one end of the main body 310 (e.g., ...). Figure 2 and Figure 5 (as shown on the right side), and has a diameter larger than that of the main body 310.

[0057] A through-hole 330 is formed at the center of the bearing 300, and the motor shaft 30 is inserted into and installed in the through-hole 330.

[0058] One end face of the bearing 300 (e.g.) Figure 2 and Figure 5 A blocking groove 340 may be formed on the right side shown, the blocking groove 340 extending inward (e.g., Figure 2 and Figure 5 The depression is formed on the left side (as shown).

[0059] The blocking groove 340 can serve the following functions: prevent oil on the outer surface of the motor shaft 30 from being discharged radially; that is, when the oil adhering to the outer surface of the motor shaft 30 is separated radially due to centrifugal force as the motor shaft 30 rotates, it can be blocked by the blocking groove 340 to prevent radial separation.

[0060] Multiple air vents 350 may also be provided on the outer surface of the bearing 300.

[0061] Preferably, the shaft hole 330 is formed with a diameter adapted to the motor shaft 30, so that the motor shaft 30 is rotatably supported on the bearing 300.

[0062] Based on this, preferably, the inner diameter of the shaft hole 330 is larger than the outer diameter of the motor shaft 30, and an enlarged portion 332 is further formed at the center. As shown in the figure, the inner diameter of the enlarged portion 332 is larger than the inner diameter of the shaft hole 330, that is, the inner diameter at the center of the shaft hole 330 is preferably larger than the outer diameter of the shaft hole 330 (e.g., the outer diameter at the center of the shaft hole 330 is larger than the outer diameter at the left and right sides of the shaft hole 330). Figure 5 (As shown) the inner diameters on both sides. This has the advantage of reducing friction between the bearing 300 and the motor shaft 30, while improving concentricity.

[0063] Additionally, on both sides of the bearing 300 (e.g.) Figure 2 A pair of washers 500 and 510 may be further provided on the left and right sides (as shown). These washers 500 and 510 serve the following function: to prevent oil between the bearing 300 and the motor shaft 30 from leaking from the left and right sides of the motor shaft 30 (e.g., ...). Figure 2 (As shown) it emerges from both sides.

[0064] Therefore, at least one of the pair of washers 500 and 510 can be located inside the blocking groove 340.

[0065] Upon closer inspection, the pair of washers 500 and 510 are specifically: the first washer 500 is located on the left side of the bearing 300; the second washer 510 is located on the right side of the bearing 300.

[0066] As shown in the figure, the first washer 500 is located at the left end of the bearing mounting portion 150 (e.g., Figure 2 (As shown) Inside, to prevent oil between the bearing 300 and the motor shaft 30 from escaping to the left.

[0067] As shown in the figure, the second washer 510 is disposed inside the blocking groove 340 formed at the right end of the bearing 300 to prevent oil between the bearing 300 and the motor shaft 30 from escaping to the right.

[0068] A felt 600 for supplying oil may be further provided on one side of the bearing 300. The felt 600 may be impregnated with oil, thereby continuously supplying oil between the bearing 300 and the motor shaft 30, thereby enabling the motor shaft 30 to rotate smoothly and preventing wear.

[0069] As shown in the figure, the felt 600 can be formed into a circular ring with a specified thickness and width, and can be disposed in the space between the main support 100 and the cover 400. That is, the felt 600 is preferably disposed radially on the bearing 300 head 320 mounted on the main support 100, and is configured to wrap around the outside of the head 320.

[0070] The main functions of a motor with the aforementioned structure will now be examined.

[0071] The main support 100 is equipped with components such as the rotor 10 and the stator 20. The main support 100 and the outer shell support 200 can be connected to each other by fastening components such as bolts and nuts. The bearing 300 is inserted into the bearing mounting part 150 of the main support 100.

[0072] At this time, the main body 310 of the bearing 300 is inserted into the bearing mounting part 150. When the cover 400 is installed, the head 320 of the bearing 300 is located between the main support 100 and the cover 400.

[0073] As shown in the figure, the left end of the cover 400 is inserted into and fixed inside the receiving end 140 of the main support 100. (See figure for reference) Figure 2 As shown in the figure, the left end of the cover 400 is located between the guide rib 160 and the storage end 140, and the left end of the cover 400 can be fixed to the main bracket 100 by means of ultrasonic welding or the like.

[0074] At this time, since the ultrasonic welding is performed inside the receiving end 140 where the left end of the cover 400 is located, the burrs generated during welding will not be exposed on the outside of the main support 100 or the cover 400. That is, since the welding part used to fix the cover 400 is the area W that receives the end of the cover 400, and this area W is located on the inside of the cover 400, the burrs generated during welding will not be exposed to the outside.

[0075] Furthermore, when the bearing 300 is installed between the main support 100 and the cover 400, the bearing 300 is firmly supported by multiple parts, specifically by three parts.

[0076] Upon closer inspection, the contact portion A between the main body 310 of the bearing 300 and the inner surface of the bearing mounting portion 150 forms a support in the horizontal direction, thereby improving concentricity. Furthermore, the contact portion B between the head 320 of the bearing 300 and the main support 100 further forms a support, thereby improving the right angle. Additionally, the right side of the head 320 of the bearing 300 (e.g., Figure 2 As shown, the portion C that contacts the support rib 430 of the cover 400 further forms a support.

[0077] Therefore, the bearing 300 is supported by three parts A, B and C to achieve the effect of simultaneously improving concentricity and squareness.

[0078] Furthermore, since the felt 600 is located outside the head 320 of the bearing 300, when the oil inside the shaft hole 330 decreases, the oil inside the felt 600 gradually moves towards the gap between the bearing 300 and the motor shaft 30, thereby providing lubrication. The pair of washers 500 and 510 are used to prevent oil from escaping to the left and right sides. The second washer 510 is located at a position corresponding to the right end of the bearing 300. Therefore, even if the oil on the left side of the second washer 510 is sprayed radially due to the centrifugal force generated by the rotation of the motor shaft 30, it will be blocked at the blocking groove 340 and return to the left side of the second washer 510, preventing oil leakage.

[0079] As described above, in this invention, when the motor shaft 30 is driven to rotate by an externally supplied power source, the motor shaft 30 is supported by the bearing 300.

[0080] At this time, the oil disposed in the shaft hole 330 of the bearing 300 lubricates the motor shaft 30 to ensure smooth rotation, and the oil between the bearing 300 and the motor shaft 30 is prevented from flowing left and right by the pair of washers 500 and 510, and radial oil leakage is prevented by the blocking groove 340. That is, as described above, since the first washer 500 and the second washer 510 are provided on the left and right sides of the bearing 300, oil leakage to the left and right sides of the bearing 300 is prevented.

[0081] The scope of the present invention is not limited to the above-described exemplary embodiments. For those skilled in the art, various other modifications can be made based on the present invention within the scope of the above-described technology.

Claims

1. A motor with a T-type single bearing, characterized in that, include: Rotor (10); The stator (20) is disposed on one side of the rotor (10) and encloses the rotor (10). A motor shaft (30) is disposed through the center of the rotor (10) and the stator (20) and is pressed into the rotor (10). The main support (100) is arranged to wrap around the outside of the rotor (10) and stator (20) and forms the external structure; The outer casing support (200) is connected to one end of the main support (100) to shield one side of the rotor (10) and stator (20); A bearing (300) is mounted at the other end of the main support (100) and rotatably supports the motor shaft (30). A cover (400) is attached to the main support (100) and wraps around one side of the bearing (300) mounted on the main support (100).

2. The motor with a T-type single bearing according to claim 1, characterized in that, The bearing (300) is T-shaped, and a felt (600) for supplying oil is provided on one side of the bearing (300).

3. The motor with a T-type single bearing according to claim 2, characterized in that, A pair of washers (500, 510) are provided on both sides of the bearing (300) to prevent oil from leaking between the bearing (300) and the motor shaft (30).

4. The motor with a T-type single bearing according to claim 3, characterized in that, A blocking groove (340) is formed on one end face of the bearing (300), the blocking groove (340) is recessed inward, and at least one of the pair of washers (500, 510) is located inside the blocking groove (340).

5. The motor with a T-type single bearing according to any one of claims 1-4, characterized in that, A support rib (430) is formed protruding on one end face of the cover (400), and the support rib (430) contacts one end of the bearing (300) and supports the bearing (300).

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