Motor shaft with improved sealing structure

Abstract

The utility model relates to the technical field of motor shafts, and provides a motor shaft with an improved sealing structure, which comprises a fixed seat and an end cover, the end cover is fixed on one side of the fixed seat, a sealing mechanism is arranged in the fixed seat in a penetrating manner, a shaft body is arranged in the sealing mechanism in a penetrating manner, and a lubricating structure is arranged at the top of the fixed seat. And a dismounting structure is arranged on one side in the end cover. By arranging the dismounting structure, under the action of the rubber ring, displacement of the sealing ring is avoided, the sealing function is achieved under the action of the sealing ring, when the sealing ring needs to be replaced, the handle is pulled, the handle drives the clamping block to move to the outer portion of the end cover through the cover plate, meanwhile, the cover plate drives the rubber ring to move to the outer portion of the end cover, and therefore the sealing ring can be replaced. Therefore, the end cover can be replaced conveniently, the device is convenient to disassemble and assemble, and the applicability of the motor shaft with the improved sealing structure in use is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft technology, and in particular to a motor shaft with an improved sealing structure. Background Technology

[0002] The motor shaft is the main support and connecting component of the armature part of the motor, and it is also the output component of the power generated by the motor. The motor shaft is one of the essential and indispensable parts of the motor. In order to prevent leakage during use, the motor shaft needs to be sealed. Therefore, a motor shaft with an improved sealing structure is used.

[0003] To address this, patent CN207977816U discloses a sealing structure for the extension end of a motor shaft, comprising a motor shaft extension end, a motor front end cover, and an L-shaped cylinder. The motor front end cover has a through-hole in the thickness direction at its center, through which the motor shaft extension end concentrically exits. The left end face of the motor front end cover has a bearing seat hole, and the right end face has an oil seal seat hole. The bearing seat hole contains a bearing and a wave washer arranged sequentially from left to right. The outer ring of the bearing is transitionally fitted with the bearing seat hole, and the inner ring of the bearing is interference-fitted with the motor shaft extension end. The oil seal seat hole contains a skeleton oil seal, and the inner ring of the skeleton oil seal contacts the motor shaft extension end. The outer wall of the motor shaft extension end has several annular grooves evenly spaced along the axial direction. The inner wall of the L-shaped cylinder has annular protrusions that extend into the annular grooves but do not contact them, and the L-shaped cylinder has a two-part structure. This utility model has a simple and reasonable structure and good sealing performance.

[0004] Although the sealing structure at the motor shaft extension end mentioned above greatly improves the sealing effect during use, it is extremely inconvenient to use because it is difficult to disassemble and replace the sealing ring. Utility Model Content

[0005] The purpose of this invention is to provide a motor shaft with an improved sealing structure to solve the problem that existing motor shafts with improved sealing structures are inconvenient to disassemble and assemble.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a motor shaft with an improved sealing structure, including a fixed base and an end cover;

[0007] An end cap is fixed to one side of the fixing base, a sealing mechanism passes through the interior of the fixing base, and a shaft passes through the interior of the sealing mechanism;

[0008] The top of the fixing seat is provided with a lubrication structure;

[0009] The end cap has a disassembly and assembly structure on one side inside. The disassembly and assembly structure includes a cover plate, a snap-fit ​​groove, a snap-fit ​​block, a reserved groove, a placement groove, a sealing ring, a rubber ring, and a handle. The placement groove is located on one side inside the end cap. A sealing ring is located inside the placement groove. A rubber ring is located on one side of the sealing ring. One side of the rubber ring extends to the outside of the end cap and is fixed to the cover plate. Handles are fixed to both ends of one side of the cover plate. Snap-fit ​​grooves are located inside the end caps at both ends of the placement groove. Snap-fit ​​blocks are located inside the snap-fit ​​grooves. Reserved grooves are located inside the snap-fit ​​blocks.

[0010] When using this device, the addition of a disassembly and assembly structure facilitates easy disassembly and assembly, thereby improving the applicability of the motor shaft with the improved sealing structure during use; the addition of a lubrication structure facilitates lubrication, thereby improving the convenience of using the motor shaft with the improved sealing structure; and the addition of a sealing mechanism facilitates sealing, thereby improving the sealing performance of the motor shaft with the improved sealing structure during use.

[0011] Preferably, the lubrication structure includes a sealing cap, a sealing block, and an oil injection hole. The oil injection hole penetrates the top of the fixed seat, and a sealing block is disposed on the top of the oil injection hole. The top of the sealing block extends to the outside of the fixed seat and is fixed with the sealing cap. By pulling the sealing cap with the fixed block, the sealing cap causes the sealing block to separate from the fixed seat, injecting lubricating oil into the interior of the oil injection hole, thereby reducing the friction between the rotating ring and the first stationary ring and the second stationary ring.

[0012] Preferably, the sealing block and the fixing seat form an engaging structure through the oil injection hole, and the top of the sealing cover is fixed with a fixing block. When the sealing cover is moved to the top of the oil injection hole and pressed, the sealing cover moves the sealing block into the interior of the oil injection hole, preventing dust from entering the interior of the oil injection hole under the action of the sealing block.

[0013] Preferably, one end of the shaft extends to the outside of the end cap, and the shaft and the end cap form a rotating structure.

[0014] Preferably, the sealing mechanism includes an internal cavity, a first stationary ring, a rotating ring, and a second stationary ring. The internal cavity extends through the interior of the fixed seat. A rotating ring is fixed to the outer side of a shaft inside the internal cavity. The first stationary ring is sleeved on the outer side of the shaft on one side of the rotating ring, and a second stationary ring is sleeved on the outer side of the shaft on the other side of the rotating ring. Because the rotating ring is fixed to the outer side of the shaft, the rotating ring rotates when the shaft rotates, and the shaft rotates simultaneously inside the first and second stationary rings.

[0015] Preferably, the outer side of the first stationary ring is fixedly connected to the inner wall of the fixed seat, and the side of the second stationary ring away from the rotating ring is fixedly connected to the side of the end cover. Under the action of the rotating ring, the friction between the shaft and the fixed seat is converted into friction between the rotating ring and the first and second stationary rings, so that the shaft can still maintain its sealing performance during operation.

[0016] Preferably, the snap-fit ​​block and the end cap form an engaging structure through a snap-fit ​​groove, and the inner side of the sealing ring contacts the outer side of the shaft. The sealing ring is moved into the placement groove, and the handle moves the cover plate to one side of the groove. Pushing the cover plate, under the action of the pre-reserved groove, the cover plate moves the snap-fit ​​block into the snap-fit ​​groove, and simultaneously moves the rubber ring into the placement groove. The rubber ring prevents displacement of the sealing ring and provides a sealing function. When the sealing ring needs to be replaced, the handle is pulled, and the handle moves the snap-fit ​​block to the outside of the end cap through the cover plate, while the cover plate moves the rubber ring to the outside of the end cap, thus facilitating the replacement of the end cap.

[0017] The improved sealing structure of the motor shaft provided by this utility model has the following advantages:

[0018] With a detachable structure, the sealing ring provides a sealing function. When the sealing ring needs to be replaced, pull the handle. The handle moves the snap-fit ​​block to the outside of the end cover via the cover plate. At the same time, the cover plate moves the rubber ring to the outside of the end cover, making it easy to replace the end cover. This device is easy to detach and assemble, thereby improving the applicability of the motor shaft with the improved sealing structure in use.

[0019] By incorporating a lubrication structure, the sealing cover is pulled apart by the fixed block, causing the sealing cover to separate from the fixed seat, injecting lubricating oil into the oil injection hole. This reduces the friction between the rotating ring and the first and second stationary rings. Moving the sealing cover to the top of the oil injection hole and pressing it causes the sealing cover to move the sealing block into the oil injection hole. Under the action of the sealing block, dust is prevented from entering the oil injection hole, thus achieving the function of easy lubrication of the device and improving the convenience of using the motor shaft with the improved sealing structure.

[0020] By incorporating a sealing mechanism, a rotating ring is fixed to the outside of the shaft. When the shaft rotates, it drives the rotating ring to rotate, while the shaft rotates inside the first and second stationary rings. Under the action of the rotating ring, the friction between the shaft and the fixed seat is converted into friction between the rotating ring and the first and second stationary rings, allowing the shaft to maintain its sealing performance during operation. This achieves the sealing function of the device and improves the sealing performance of the motor shaft with the improved sealing structure during use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0023] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the disassembly and assembly structure of this utility model.

[0026] The reference numerals in the figure are as follows: 1. Fixed seat; 2. End cover; 3. Lubrication structure; 301. Sealing cover; 302. Sealing block; 303. Oil injection hole; 4. Shaft; 5. Sealing mechanism; 501. Internal cavity; 502. First stationary ring; 503. Rotary ring; 504. Second stationary ring; 6. Disassembly and assembly structure; 601. Cover plate; 602. Snap-fit ​​groove; 603. Snap-fit ​​block; 604. Reserved groove; 605. Placement groove; 606. Sealing ring; 607. Rubber ring; 608. Handle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model provides an improved sealing structure for a motor shaft, including a fixed base 1 and an end cover 2. The end cover 2 is fixed to one side of the fixed base 1. A sealing mechanism 5 passes through the interior of the fixed base 1. The sealing mechanism 5 includes an internal cavity 501, a first stationary ring 502, a rotating ring 503, and a second stationary ring 504. The internal cavity 501 passes through the interior of the fixed base 1. The rotating ring 503 is fixed to the outer side of the shaft 4 inside the internal cavity 501. The first stationary ring 502 is sleeved on the outer side of the shaft 4 on one side of the rotating ring 503, and the second stationary ring 504 is sleeved on the outer side of the shaft 4 on the other side of the rotating ring 503. The outer side of the first stationary ring 502 is fixedly connected to the inner wall of the fixed base 1, and the side of the second stationary ring 504 away from the rotating ring 503 is fixedly connected to one side of the end cover 2.

[0029] Reference Figure 2 and Figure 4As shown, the rotating ring 503 is fixed to the outside of the shaft 4. When the shaft 4 rotates, it will drive the rotating ring 503 to rotate. At the same time, the shaft 4 rotates inside the first stationary ring 502 and the second stationary ring 504. Under the action of the rotating ring 503, the friction between the shaft 4 and the fixed seat 1 is converted to the friction between the rotating ring 503 and the first stationary ring 502 and the second stationary ring 504, so that the shaft 4 can still maintain its sealing performance during operation.

[0030] The sealing mechanism 5 has a shaft 4 running through it. The top of the fixed seat 1 is provided with a lubrication structure 3. The lubrication structure 3 includes a sealing cover 301, a sealing block 302 and an oil injection hole 303. The oil injection hole 303 runs through the top of the fixed seat 1. The top of the oil injection hole 303 is provided with a sealing block 302. The top of the sealing block 302 extends to the outside of the fixed seat 1 and is fixed with the sealing cover 301. The sealing block 302 and the fixed seat 1 form a locking structure through the oil injection hole 303. The top of the sealing cover 301 is fixed with a fixing block. One end of the shaft 4 extends to the outside of the end cover 2. The shaft 4 and the end cover 2 form a rotating structure.

[0031] Reference Figure 1 and Figure 2 As shown, by pulling the sealing cover 301 with the fixing block, the sealing cover 301 drives the sealing block 302 to separate from the fixing seat 1, injecting lubricating oil into the oil injection hole 303, reducing the friction between the moving ring 503 and the first stationary ring 502 and the second stationary ring 504. The sealing cover 301 is moved to the top of the oil injection hole 303. Pressing the sealing cover 301, the sealing cover 301 drives the sealing block 302 to move into the oil injection hole 303. Under the action of the sealing block 302, dust is prevented from entering the interior of the oil injection hole 303.

[0032] A disassembly and assembly structure 6 is provided on one side of the interior of the end cover 2. The disassembly and assembly structure 6 includes a cover plate 601, a snap-fit ​​groove 602, a snap-fit ​​block 603, a reserved groove 604, a placement groove 605, a sealing ring 606, a rubber ring 607, and a handle 608. The placement groove 605 is opened on one side of the interior of the end cover 2. The sealing ring 606 is provided inside the placement groove 605. A rubber ring 607 is provided on one side of the sealing ring 606. One side of the rubber ring 607 extends to the outside of the end cover 2 and is fixed to the cover plate 601. Handles 608 are fixed at both ends of one side of the cover plate 601. Snap-fit ​​grooves 602 are opened inside the end cover 2 at both ends of the placement groove 605. Snap-fit ​​blocks 603 are provided inside the snap-fit ​​grooves 602. Reserved grooves 604 are provided inside the snap-fit ​​blocks 603. The snap-fit ​​blocks 603 and the end cover 2 form a snap-fit ​​structure through the snap-fit ​​grooves 602. The inner side of the sealing ring 606 is in contact with the outer side of the shaft 4.

[0033] Reference Figure 2 and Figure 3As shown, the sealing ring 606 is moved into the placement groove 605. The handle 608 drives the cover plate 601 to one side of the placement groove 605. Pushing the cover plate 601, under the action of the reserved groove 604, the cover plate 601 drives the snap-fit ​​block 603 to move into the snap-fit ​​groove 602. At the same time, the cover plate 601 drives the rubber ring 607 to move into the placement groove 605. Under the action of the rubber ring 607, the sealing ring 606 is prevented from shifting. Under the action of the sealing ring 606, the sealing ring 606 performs the sealing function. When the sealing ring 606 needs to be replaced, pull the handle 608. The handle 608 drives the snap-fit ​​block 603 to move to the outside of the end cover 2 through the cover plate 601. At the same time, the cover plate 601 drives the rubber ring 607 to move to the outside of the end cover 2, thus facilitating the replacement of the end cover 2.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A motor shaft with an improved sealing structure, comprising a mounting base (1) and an end cap (2); Its features are: An end cap (2) is fixed to one side of the fixed base (1), a sealing mechanism (5) passes through the interior of the fixed base (1), and a shaft (4) passes through the interior of the sealing mechanism (5). The top of the fixed base (1) is provided with a lubrication structure (3); A disassembly structure (6) is provided on one side inside the end cap (2). The disassembly structure (6) includes a cover plate (601), a snap-fit ​​groove (602), a snap-fit ​​block (603), a reserved groove (604), a placement groove (605), a sealing ring (606), a rubber ring (607), and a handle (608). The placement groove (605) is opened on one side inside the end cap (2). A sealing ring (606) is provided inside the placement groove (605). A rubber ring (607) is provided on one side of the end cap (2), and a cover plate (601) is fixed to one side of the rubber ring (607). A handle (608) is fixed to both ends of one side of the cover plate (601). A snap-fit ​​groove (602) is provided inside the end cap (2) at both ends of the placement groove (605). A snap-fit ​​block (603) is provided inside the snap-fit ​​groove (602). A reserved groove (604) is provided inside the snap-fit ​​block (603).

2. The motor shaft with an improved sealing structure according to claim 1, characterized in that: The lubrication structure (3) includes a sealing cap (301), a sealing block (302), and an oil injection hole (303). The oil injection hole (303) passes through the top of the fixed seat (1). The top of the oil injection hole (303) is provided with a sealing block (302). The top of the sealing block (302) extends to the outside of the fixed seat (1) and is fixed with a sealing cap (301).

3. The motor shaft with an improved sealing structure according to claim 2, characterized in that: The sealing block (302) and the fixing seat (1) form a locking structure through the oil injection hole (303), and the top of the sealing cover (301) is fixed with a fixing block.

4. The motor shaft with an improved sealing structure according to claim 1, characterized in that: One end of the shaft (4) extends to the outside of the end cap (2), and the shaft (4) and the end cap (2) constitute a rotating structure.

5. The motor shaft with an improved sealing structure according to claim 1, characterized in that: The sealing mechanism (5) includes an internal cavity (501), a first stationary ring (502), a rotating ring (503), and a second stationary ring (504). The internal cavity (501) extends through the interior of the fixed seat (1). A rotating ring (503) is fixed to the outside of the shaft (4) inside the internal cavity (501). The first stationary ring (502) is sleeved on the outside of the shaft (4) on one side of the rotating ring (503), and the second stationary ring (504) is sleeved on the outside of the shaft (4) on the other side of the rotating ring (503).

6. The motor shaft with an improved sealing structure according to claim 5, characterized in that: The outer side of the first stationary ring (502) is fixedly connected to the inner wall of the fixed seat (1), and the side of the second stationary ring (504) away from the moving ring (503) is fixedly connected to one side of the end cap (2).

7. The motor shaft with an improved sealing structure according to claim 1, characterized in that: The snap-fit ​​block (603) and the end cap (2) form a snap-fit ​​structure through the snap-fit ​​groove (602), and the inner side of the sealing ring (606) is in contact with the outer side of the shaft (4).

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