Oil leakage prevention window sash motor

Abstract

The invention relates to an oil leakage prevention window sash motor which comprises a machine shell, a motor shaft, a stator and a rotor, the machine shell comprises a front machine cover and a rear machine cover, the front machine cover and the rear machine cover are each provided with a bearing installation part, each bearing installation part is provided with an oil bearing, an elastic piece and an oil cover, and each oil cover comprises a cylindrical cover body. An annular bottom plate extending outwards is arranged at the upper end of the cylindrical cover body, an annular limiting plate extending inwards is arranged at the lower end of the cylindrical cover body, an inverted-hook-shaped baffle ring used for preventing oil sludge from splashing outwards is arranged on the inner edge of the annular limiting plate, annular oil grooves are formed in the inner wall face of the front machine cover and the inner wall face of the rear machine cover and surround a bearing installation part, and the annular oil grooves are communicated with the annular bottom plate. An annular flange matched with the annular oil groove is arranged on the annular bottom plate; through up-and-down matched arrangement of the annular flange, the annular oil groove and the inverted-hook-shaped baffle ring, the comprehensive oil leakage prevention effect can be achieved, stability is high, the service life is long, and practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an oil leakage-proof window sash motor. Background Art

[0002] In the related art, the window fan motor generally uses an oil-containing bearing as the support of the rotating shaft. The rotating shaft rotates at a high speed in the oil-containing bearing. Due to the negative pressure generated by the local vacuum, the rotating shaft absorbs the lubricating oil in the oil-containing bearing for lubrication. At the same time, the oil-containing bearing is fixed to the machine cover through a spring and an oil cover; however, when the rotating shaft rotates at a high speed, the oil sludge adhered to the rotating shaft will splash outward, sometimes fly outward from the open end of the oil cover, and flow out in the gap between the oil cover and the machine cover, causing oil leakage, resulting in a waste of lubricating oil and affecting the normal use of the motor. In addition, when the oil output of the oil-containing bearing is small, the lubrication of the rotating shaft is insufficient, thereby affecting the service life of the rotating shaft and the oil-containing bearing. Summary of the invention

[0003] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention proposes an oil leakage-proof window sash motor.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An oil-leakage-proof window sash motor comprises a casing, a motor shaft, and a stator and a rotor arranged in the casing, wherein the casing comprises a front cover and a rear cover, and bearing mounting parts are arranged on the front cover and the rear cover, and oil-containing bearings, spring pieces and oil covers are arranged on the bearing mounting parts, and the oil cover comprises a cylindrical cover body, and an annular bottom plate extending outward is arranged at the upper end of the cylindrical cover body, and an annular limiting plate extending inward is arranged at the lower end, and the annular limiting plate is used to limit the spring piece and make the spring piece press the oil-containing bearing, wherein the inner edge of the annular limiting plate is provided with an inverted hook-type retaining ring for preventing oil mud from splashing outward, and annular oil grooves are arranged on the inner wall surfaces of the front cover and the rear cover and around the bearing mounting parts, and an annular flange matched with the annular oil groove is arranged on the annular bottom plate.

[0006] In some embodiments, the inverted hook-type retaining ring includes an oblique retaining ring connected to the edge of the annular limiting plate, and the outer edge of the oblique retaining ring is extended upward and connected to an inwardly bent groove ring.

[0007] In some embodiments, a fixing assembly capable of connecting and fixing the oil cap is provided on both the front engine cover and the rear engine cover.

[0008] In some embodiments, the fixing assembly includes a plurality of pressing plates evenly distributed along the circumference on the inner wall surfaces of the front cover and the rear cover, and the pressing plates can press the annular bottom plate by bending and deforming.

[0009] In some embodiments, the pressing sheet is integrally formed with the front cover or the rear cover by stamping and bending.

[0010] In some embodiments, a plurality of reinforcing flanges are evenly distributed along the circumference on the end surfaces of the front cover and the rear cover.

[0011] In some embodiments, a plurality of heat dissipation grooves 1 are evenly distributed along the circumference on the end surfaces of the front cover and the rear cover, and the heat dissipation grooves 1 and the reinforcing flanges are arranged in sequence at intervals.

[0012] In some embodiments, a plurality of heat dissipation slots 2 are disposed on the side walls of the front cover and the rear cover.

[0013] In some embodiments, extension plates extending outward are provided on both left and right sides of the front cover, reinforcement plates are provided at the outer ends of the extension plates, and screw mounting holes are provided at both ends of the reinforcement plates.

[0014] In some embodiments, the mounting screws of the window sash motor cannot pass through the heat sink 1 and the heat sink 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By providing an inverted hook-shaped retaining ring at the opening end of the oil cover, the oil sludge splashing outward can be blocked to prevent the oil sludge from splashing outward;

[0017] 2. At the same time, the structure of the hook-shaped retaining ring can not only block the sludge, but also gather the sludge and guide the gathered sludge to drip onto the oil-containing bearing;

[0018] 3. In addition, an annular flange is provided at the lower end of the oil cover, and an annular oil groove matching the annular flange is provided on the inner wall surface of the front engine cover and the rear engine cover. When installing, the annular flange is placed in the annular oil groove, which not only plays a better role in sealing and preventing oil leakage, but also facilitates the installation of the oil cover and improves the efficiency of installation;

[0019] 4. The present invention can achieve a comprehensive oil leakage prevention effect through the upper and lower matching arrangement of the annular flange, the annular oil groove and the inverted hook-type retaining ring, and has high stability, long service life and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 For the present invention Figure 2A magnified schematic diagram of point A;

[0023] Figure 4 This is a three-dimensional schematic diagram of the oil cap after installation of the present invention;

[0024] Figure 5 It is a partial exploded schematic diagram of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the oil cover of the present invention. DETAILED DESCRIPTION

[0026] The following specific implementation contents provide a variety of different embodiments or examples for implementing the present invention. Of course, these are only embodiments or examples and do not wish to be restrictive. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0027] The present invention is further described in the following figures and specific embodiments: Figure 1-Figure 6 The oil leakage proof window sash motor shown in the figure comprises a housing 1, a motor shaft 2, and a stator 3 and a rotor 4 arranged in the housing 1, wherein the housing 1 comprises a front cover 5 and a rear cover 6, and a bearing mounting portion 7 is arranged on the front cover 5 and the rear cover 6, and an oil-containing bearing 8, a spring piece 9 and an oil cover 10 are arranged on the bearing mounting portion 7, and the oil cover 10 comprises a cylindrical cover body 11, and the lower end of the cylindrical cover body 11 is provided with an outwardly extending annular bottom plate 12, An annular limiting plate 13 extending inward is provided at the upper end, which is used to limit the spring piece 9 and make the spring piece 9 press the oil-containing bearing 8, wherein the inner edge of the annular limiting plate 13 is provided with a hook-type retaining ring 15 for preventing the oil mud 14 from splashing outward, and annular oil grooves 17 are provided on the inner wall surfaces of the front engine cover 5 and the rear engine cover 6 and around the bearing mounting portion 7, and an annular flange 16 is provided on the annular bottom plate 12 to cooperate with the annular oil groove 17.

[0028] In the present invention, firstly, a hook-shaped retaining ring 15 is provided at the open end of the oil cover 10, so as to block the oil mud splashing outwards and prevent the oil mud from splashing outwards;

[0029] At the same time, the structure of the hook-shaped retaining ring 15 can block the sludge and gather the sludge, and guide the gathered sludge to drip onto the oil-containing bearing 8;

[0030] In addition, an annular flange 16 is provided at the lower end of the oil cover 10, and an annular oil groove 17 cooperating with the annular flange 16 is provided on the inner wall surface of the front engine cover 5 and the rear engine cover 6. During installation, the annular flange 16 is placed in the annular oil groove 17, which not only plays a better sealing and oil leakage prevention role, but also facilitates the installation of the oil cover 10 and improves the installation efficiency.

[0031] Specifically, see Figure 2 , Figure 3 , Figure 6 As shown, the inverted hook type retaining ring 15 includes an inclined retaining ring 21 connected to the edge of the annular limit plate 13, and the outer edge of the inclined retaining ring 21 is extended upwardly and connected to a groove ring 22 bent inwardly; therefore, when the motor shaft 2 causes the oil sludge to splash outward due to high-speed rotation, the oil sludge will splash on the inclined retaining ring 21 and gather through the groove ring 22, and finally the gathered oil sludge will drip onto the oil-containing bearing 8.

[0032] See also Figure 4 As shown, the front engine cover 5 and the rear engine cover 6 are both provided with fixing components capable of connecting and fixing the oil cover 10 .

[0033] Furthermore, the fixing assembly includes a plurality of pressing plates 41 evenly distributed along the circumference on the inner wall surfaces of the front engine cover 5 and the rear engine cover 6, and the pressing plates 41 can press the annular bottom plate 12 by bending and deforming; when the oil cover 10 is not installed, the pressing plates 41 are kept in an upwardly extending open state, and when pressed, the pressing plates 41 are pressed inwardly onto the annular bottom plate 12, so that the oil cover 10 can be firmly connected and fixed, with a simple structure and convenient operation.

[0034] Furthermore, the pressing sheet 41 is formed integrally with the front cover 5 or the rear cover 6 by stamping and bending.

[0035] Of course, the cylindrical cover body 11 , the annular bottom plate 12 , the annular limit plate 13 , the oblique retaining ring 21 , the groove ring 22 and the annular flange 16 are also integrally stamped and formed; the production is efficient and convenient, and the overall strength of the oil cover 10 can be improved.

[0036] Therefore, the present invention can achieve a comprehensive oil leakage prevention effect through the upper and lower matching arrangement of the annular flange 16, the annular oil groove 17 and the inverted hook type retaining ring 15, and has high stability, long service life and strong practicality.

[0037] See also Figure 1 As shown, a plurality of reinforcing flanges 61 are evenly distributed along the circumference on the end surfaces of the front hood 5 and the rear hood 6 , which can improve the strength of the front hood 5 and the rear hood 6 .

[0038] Furthermore, a plurality of heat dissipation grooves 71 are uniformly arranged along the circumference on the end surfaces of the front cover 5 and the rear cover 6, and the heat dissipation grooves 71 and the reinforcing flanges 61 are arranged in sequence and spaced apart.

[0039] A plurality of heat dissipation slots 81 are disposed on the side walls of the front cover 5 and the rear cover 6 .

[0040] By setting the heat dissipation groove 1 71 and the heat dissipation groove 2 81, the heat dissipation effect can be effectively achieved. However, the mounting screws of the window fan motor cannot pass through the heat dissipation groove 1 71 and the heat dissipation groove 2 81, thereby preventing the mounting screws from falling from the heat dissipation groove 1 71 and the heat dissipation groove 2 81 into the inside of the motor during installation, thereby improving safety. The mounting screws refer to the screws used to assemble the motor.

[0041] Furthermore, extension plates 91 extending outward are provided on both left and right sides of the front hood 5 , a reinforcement plate 92 is provided at the outer end of the extension plate 91 , and screw mounting holes 93 are provided at both ends of the reinforcement plate 92 .

[0042] In conjunction with the drawings and the above, the basic principles and main features of the present invention and the advantages of the present invention are shown and described. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An oil-leakage-proof window sash motor, comprising a housing (1), a motor shaft (2), and a stator (3) and a rotor (4) arranged in the housing (1), wherein: The housing (1) comprises a front cover (5) and a rear cover (6), and a bearing mounting portion (7) is provided on each of the front cover (5) and the rear cover (6), and an oil-containing bearing (8), a spring sheet (9) and an oil cover (10) are provided on the bearing mounting portion (7), wherein the oil cover (10) comprises a cylindrical cover body (11), and the lower end of the cylindrical cover body (11) is provided with an outwardly extending annular bottom plate (12), and the upper end is provided with an inwardly extending annular limit plate (13), The annular limiting plate (13) is used to limit the spring piece (9) and make the spring piece (9) press the oil-containing bearing (8), wherein the inner edge of the annular limiting plate (13) is provided with a hook-shaped retaining ring (15) for preventing the oil mud (14) from splashing outward, annular oil grooves (17) are provided on the inner wall surfaces of the front engine cover (5) and the rear engine cover (6) and around the bearing mounting portion (7), and an annular flange (16) is provided on the annular bottom plate (12) and is arranged to cooperate with the annular oil groove (17).

2. The oil leakage-proof window sash motor according to claim 1, characterized in that: The inverted hook-shaped retaining ring (15) comprises an inclined retaining ring (21) connected to the edge of the annular limiting plate (13), wherein the outer edge of the inclined retaining ring (21) extends upwardly and is connected to an inwardly bent groove ring (22).

3. The oil leakage-proof window sash motor according to claim 1, characterized in that: The front engine cover (5) and the rear engine cover (6) are both provided with fixing components capable of connecting and fixing the oil cover (10).

4. The oil leakage-proof window sash motor according to claim 3, characterized in that: The fixing assembly comprises a plurality of pressing plates (41) uniformly arranged along the circumference on the inner wall surfaces of the front cover (5) and the rear cover (6); the pressing plates (41) can press the annular bottom plate (12) by bending and deforming.

5. The oil leakage-proof window sash motor according to claim 3, characterized in that: The pressing sheet (41) is integrally formed with the front cover (5) or the rear cover (6) by stamping and bending.

6. The oil leakage-proof window sash motor according to claim 1, characterized in that: A plurality of reinforcing flanges (61) are evenly distributed along the circumference on the end surfaces of the front hood (5) and the rear hood (6).

7. The oil leakage-proof window sash motor according to claim 6, characterized in that: A plurality of heat dissipation grooves (71) are evenly distributed along the circumference on the end surfaces of the front cover (5) and the rear cover (6), and the heat dissipation grooves (71) and the reinforcing flanges (61) are arranged in sequence and spaced apart.

8. The oil leakage-proof window sash motor according to claim 7, characterized in that: A plurality of heat dissipation grooves 2 (81) are provided on the side wall surfaces of the front cover (5) and the rear cover (6).

9. The oil leakage-proof window sash motor according to claim 8, characterized in that: Extension plates (91) extending outward are provided on both left and right sides of the front cover (5), a reinforcement plate (92) is provided at the outer end of the extension plate (91), and screw mounting holes (93) are provided at both ends of the reinforcement plate (92).

10. The oil leakage-proof window sash motor according to claim 9, characterized in that: The mounting screws of the window sash motor cannot pass through the heat sink 1 (71) and the heat sink 2 (81).

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