Motor end cover fixing structure

Abstract

The utility model discloses a motor end cover fixing structure, and particularly relates to the technical field of motor end covers, the motor end cover fixing structure comprises an end cover body, the two sides of the front end of the end cover body are provided with grooves, the periphery of the surface of the end cover body is provided with fixing holes, and the outer wall of the end cover body is fixedly connected with mounting lugs. A receding hole is formed in the middle of the end cover body. According to the motor end cover fixing structure provided by the utility model, the lubricating oil can flow to the surface of the shaft rod through the arranged lubricating mechanism, so that the shaft and the shaft sleeve can be lubricated, the abrasion speed of the shaft is reduced, the lubricating process is simple and convenient, and the use cost of a user is reduced; through the arrangement of the limiting mechanism, the equipment can enable the contact area, originally used for being in contact with the bearing, on the end cover to be reduced, so that the situation of poor assembly when the roundness precision error of the end cover subjected to injection molding is large is avoided, the qualified rate of product assembly is improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor end covers, in particular to a motor end cover fixing structure. Background Art

[0002] The motor end cover is a supporting device for motor protection and an important component of the motor housing. Its quality directly affects the normal operation of the entire motor. At present, in order to ensure that the motor end cover has sufficient strength and rigidity, it is generally formed by cast aluminum die-casting and then machined. The material cost and manufacturing process cost are relatively high, which causes the motor production cost to rise and the market competitiveness of motor products to decline. In order to reduce the cost of raw materials, most companies adopt measures to reduce the wall thickness of the aluminum end cover, but the strength of the end cover is affected to a certain extent. When the wall thickness is reduced to a certain degree, the cost of raw materials for the end cover cannot continue to decline due to the limitations of the end cover strength and die-casting process requirements. Furthermore, the motor end cover made of cast aluminum die-casting has the problems of corrosion resistance, poor insulation and high noise.

[0003] The prior art has the following problems.

[0004] 1. With the existing motor end cover fixing structure, when the motor output shaft rotates, it will cause serious friction with the shaft sleeve, and the wear speed between the output shaft and the shaft sleeve will not be reduced. Lubricating oil needs to be added between the two to lubricate them. When adding the lubricating oil, the motor needs to be shut down, and then the front end cover structure is removed to separate the shaft sleeve from the output shaft. Only then can the user apply the lubricating oil to the shaft sleeve and the output shaft to lubricate them. After applying the lubricating oil, the front end cover structure needs to be reinstalled on the motor, which makes the lubrication process more troublesome, thereby reducing the lubrication efficiency between the output shaft and the shaft sleeve;

[0005] 2. The existing motor end cover fixing structure takes into account that when the motor end cover is fixed to the casing, the motor end cover itself needs to have a certain supporting function in addition to the sealing function. When important components need to be fixed on some motor end covers, a corresponding mounting structure is required for cooperation. However, the injection-molded plastic end cover is prone to insufficient precision due to process problems, and the precision requirements for the fixing of important components cannot be met. Utility Model Content

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A motor end cover fixing structure comprises an end cover body, grooves are arranged on both sides of the front end of the end cover body, fixing holes are arranged around the surface of the end cover body, mounting ears are fixedly connected to the outer wall of the end cover body, a clearance hole is opened in the middle of the end cover body, a lubrication mechanism is fixedly connected to the front end of the end cover body, and a limiting mechanism is fixedly connected to the rear end of the end cover body.

[0008] Preferably, the lubrication mechanism includes a sleeve, the rear end of the sleeve is fixedly connected to the front end of the end cover body, the inner cavity of the sleeve is provided with an oil guide chamber, the bottom wall of the oil guide chamber is provided with an oil guide hole, the top wall of the oil guide chamber is provided with an oil filling hole, the inner wall of the oil filling hole is plugged with a sealing plug, the upper end of the sealing plug is fixedly connected with a dustproof net, the outer wall of the sleeve extends to the inner wall of the oil guide chamber and is fixedly connected with a guide cylinder, one side of the inner wall of the oil guide chamber is fixedly connected with an oil guide plate, the inner wall of the guide cylinder is slidably connected with a piston, the upper end of the piston is rotatably connected with a screw, and the upper end of the screw is fixedly connected with a turning handle.

[0009] Preferably, the inner wall of the shaft sleeve is embedded with the outer wall of the oil guide cavity, and an oil guide hole is provided on the inner bottom wall of the oil guide cavity.

[0010] Preferably, an internal thread matching the external thread of the screw is formed at the upper opening of the guide cylinder.

[0011] Preferably, the limiting mechanism comprises a boss, a front end of the boss is fixedly connected to a rear end of the end cover body, an inner wall of the boss is provided with a protrusion, and a guide slope is provided on one side of the protrusion.

[0012] Preferably, the inner wall of the boss is fixedly connected to the outer wall of the protrusion, and a guide slope is provided on one side of the protrusion.

[0013] Preferably, the boss is in the shape of a hollow cylinder.

[0014] Preferably, the outer wall of the groove is connected through the inner wall of the end cover body, and the outer wall of the fixing hole is connected through the inner wall of the end cover body.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model can enable the equipment to flow lubricating oil to the surface of the shaft through the lubrication mechanism, so as to lubricate the shaft and the sleeve, slow down the wear rate of the shaft, and the lubrication process is simple and convenient, reducing the user's use cost.

[0017] 2. During the implementation of the utility model, the limiting mechanism provided can enable the equipment to reduce the contact area of ​​the end cover originally used for contacting the bearing, thereby avoiding poor assembly when the roundness accuracy error of the end cover after injection molding is large, thereby improving the qualified rate of product assembly and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the lubrication mechanism structure of the utility model;

[0020] Figure 3 It is a detailed structural diagram of the lubrication mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0022] Figure 5 It is a side view of the utility model.

[0023] In the figure: 1. end cover body; 2. groove; 3. fixing hole; 4. mounting ear; 5. clearance hole; 6. lubrication mechanism; 7. limit mechanism; 61. bushing; 62. oil guide chamber; 63. oil guide hole; 64. oil filling hole; 65. sealing plug; 66. dustproof net; 67. guide cylinder; 68. oil guide plate; 69. piston; 610. screw; 611. handle; 71. boss; 72. protrusion; 73. guide slope. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 , Figure 5As shown, a motor end cover fixing structure comprises an end cover body 1, grooves 2 are arranged on both sides of the front end of the end cover body 1, fixing holes 3 are arranged around the surface of the end cover body 1, mounting ears 4 are fixedly connected to the outer wall of the end cover body 1, a clearance hole 5 is opened in the middle of the end cover body 1, and a lubrication mechanism 6 is fixedly connected to the front end of the end cover body 1. The lubrication mechanism 6 enables the equipment to flow lubricating oil to the surface of the shaft rod, thereby lubricating the shaft and the shaft sleeve, slowing down the wear rate of the shaft, and the lubrication process is simple and convenient, reducing the user's use cost, and the rear end of the end cover body 1 is fixedly connected to a limiting mechanism 7. The limiting mechanism 7 enables the equipment to reduce the contact area on the end cover originally used for contacting with the bearing, thereby avoiding the occurrence of poor assembly when the roundness accuracy error of the end cover after injection molding is large, improving the qualified rate of product assembly, and reducing processing costs. The outer wall of the groove 2 is through-connected with the inner wall of the end cover body 1, and the outer wall of the fixing hole 3 is through-connected with the inner wall of the end cover body 1.

[0026] like Figure 2 , Figure 3 As shown, the lubrication mechanism 6 includes a sleeve 61, the rear end of the sleeve 61 is fixedly connected to the front end of the end cover body 1, the inner cavity of the sleeve 61 is provided with an oil guide cavity 62, the bottom wall of the oil guide cavity 62 is provided with an oil guide hole 63, the top wall of the oil guide cavity 62 is provided with an oil filling hole 64, the inner wall of the oil filling hole 64 is plugged with a sealing plug 65, the upper end of the sealing plug 65 is fixedly connected with a dustproof net 66, the outer wall of the sleeve 61 extends to the inner wall of the oil guide cavity 62 and is fixedly connected with a guide cylinder 67, one side of the inner wall of the oil guide cavity 62 is fixedly connected with an oil guide plate 68, the inner wall of the guide cylinder 67 is slidably connected with a piston 69, the upper end of the piston 69 is rotatably connected with a screw rod 610, and the upper end of the screw rod 610 is fixedly connected with a rotating handle 611;

[0027] The inner wall of the shaft sleeve 61 is connected with the outer wall of the oil guide cavity 62 by inserting, and the inner bottom wall of the oil guide cavity 62 is provided with an oil guide hole 63;

[0028] An internal thread matching the external thread of the screw rod 610 is formed at the upper opening of the guide cylinder 67 .

[0029] As can be seen from the above, the provision of the dustproof net 66 can prevent external impurities from falling into the oil filling hole 64 and avoid the oil guide hole 63 from being blocked, while the provision of the oil guide plate 68 is conducive to the flow of lubricating oil.

[0030] like Figure 4 As shown, the limiting mechanism 7 includes a boss 71, the front end of the boss 71 is fixedly connected to the rear end of the end cover body 1, the inner wall of the boss 71 is provided with a protrusion 72, and one side of the protrusion 72 is provided with a guide slope 73;

[0031] The inner wall of the boss 71 is fixedly connected to the outer wall of the protrusion 72, and a guide slope 73 is provided on one side of the protrusion 72;

[0032] The boss 71 is in the shape of a hollow cylinder.

[0033] As can be known from the above, a guide slope 73 is provided on the end of the protrusion 72 away from the end cover body 1 in the axial direction. The guide slope 73 makes the thickness of the end of the protrusion 72 in the axial direction gradually increase toward the center. The thickness is the size of the protrusion 72 in the radial direction. The guide slope 73 plays a guiding role, which facilitates the docking and alignment of the bearing with the clearance hole 5, so that the installation accuracy is improved while the centering of the shaft is also improved. At the same time, the boss 71 can be rounded with the help of the bearing.

[0034] The working principle of the utility model is as follows: firstly, the end cover body 1 is a disc-shaped plastic material, which can prevent the motor end cover from being corroded and achieve a sealing effect at the same time. The set clearance hole 5 is a countersunk hole and is used to make way for the central axis of the motor. The clearance hole 5 is located at the center of the boss 71. The inner wall circumference of the boss 71 is evenly distributed with a plurality of protrusions 72. Further, through the provided protrusions 72, during installation, the boss 71 is aligned with the bearing so that the bearing and the protrusions 72 contact each other. The plurality of protrusions 72 change the contact mode between the bearing and the end cover body 1 from surface contact to multiple point contacts, and the protrusions 72 are evenly distributed circumferentially so that the circumferential force of the bearing is uniform, which reduces the occurrence of axial fit errors when the roundness accuracy error of the plastic end cover is large. Then, when oiling is needed, the user first plugs the sealing plug 6 5 is screwed out from the oil injection hole 64, and then the lubricating oil flows through the oil injection hole 64 to the oil guide plate 68, and then flows into the oil guide chamber 62 through the oil guide plate 68. When the shaft needs to be lubricated, the screw 610 is driven to rotate by rotating the handle 611. The rotation of the screw 610 drives the piston 69 to move downward. The downward movement of the piston 69 pushes the air inside the guide cylinder 67 into the oil guide chamber 62. The air pushes the lubricating oil inside the oil guide chamber 62 to move, so that the lubricating oil flows toward the oil guide hole 63 and flows into the motor shaft through the oil guide hole 63. As the motor shaft continues to rotate, the lubricating oil can flow to the surface of the motor shaft, thereby lubricating the motor shaft and the shaft sleeve. At the same time, the heat between the motor shaft and the shaft sleeve is discharged through the oil guide hole 63 and the oil injection hole 64, so as to achieve a heat dissipation effect.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A motor end cover fixing structure, comprising an end cover body (1), characterized in that: Grooves (2) are provided on both sides of the front end of the end cover body (1); fixing holes (3) are provided around the surface of the end cover body (1); mounting ears (4) are fixedly connected to the outer wall of the end cover body (1); a clearance hole (5) is provided in the middle of the end cover body (1); a lubrication mechanism (6) is fixedly connected to the front end of the end cover body (1); and a limiting mechanism (7) is fixedly connected to the rear end of the end cover body (1).

2. The motor end cover fixing structure according to claim 1, characterized in that: The lubricating mechanism (6) comprises a shaft sleeve (61), the rear end of the shaft sleeve (61) is fixedly connected to the front end of the end cover body (1), the inner cavity of the shaft sleeve (61) is provided with an oil guide cavity (62), the bottom wall of the oil guide cavity (62) is provided with an oil guide hole (63), the top wall of the oil guide cavity (62) is provided with an oil injection hole (64), the inner wall of the oil injection hole (64) is plugged with a sealing plug (65), the upper end of the sealing plug (65) is provided with a sealing plug (65) and the sealing plug (65) is provided with a sealing plug (65). A dust screen (66) is fixedly connected thereto; the outer wall of the shaft sleeve (61) extends to the inner wall of the oil guide chamber (62) and is fixedly connected thereto with a guide cylinder (67); one side of the inner wall of the oil guide chamber (62) is fixedly connected thereto with an oil guide plate (68); the inner wall of the guide cylinder (67) is slidably connected thereto with a piston (69); the upper end of the piston (69) is rotatably connected thereto with a screw rod (610); and the upper end of the screw rod (610) is fixedly connected thereto with a rotating handle (611).

3. A motor end cover fixing structure according to claim 2, characterized in that: The inner wall of the shaft sleeve (61) is embedded in the outer wall of the oil guide cavity (62), and an oil guide hole (63) is provided on the inner bottom wall of the oil guide cavity (62).

4. A motor end cover fixing structure according to claim 3, characterized in that: The upper opening of the guide cylinder (67) is provided with an internal thread matching the external thread of the screw rod (610).

5. The motor end cover fixing structure according to claim 1, characterized in that: The limiting mechanism (7) comprises a boss (71), the front end of the boss (71) is fixedly connected to the rear end of the end cover body (1), the inner wall of the boss (71) is provided with a protrusion (72), and one side of the protrusion (72) is provided with a guide slope (73).

6. A motor end cover fixing structure according to claim 5, characterized in that: The inner wall of the boss (71) is fixedly connected to the outer wall of the protrusion (72), and a guide slope (73) is provided on one side of the protrusion (72).

7. A motor end cover fixing structure according to claim 6, characterized in that: The boss (71) is in the shape of a hollow cylinder.

8. The motor end cover fixing structure according to claim 1, characterized in that: The outer wall of the groove (2) is connected through the inner wall of the end cover body (1), and the outer wall of the fixing hole (3) is connected through the inner wall of the end cover body (1).

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