CN215928382U - Novel oil seal structure for motor bearing chamber - Google Patents

Abstract

The utility model discloses a novel oil seal structure for a motor bearing chamber, which comprises a sealing body, wherein a fixed seat is fixedly connected to the top of the side end face of the sealing body, a fixed block hole penetrates through the upper end face of the fixed seat, an installation groove is formed in the upper end face of the sealing body, a dust lip is clamped in the installation groove, a clamping groove is formed in the lower end face of the dust lip, a bearing ball is rotatably connected in the clamping groove, a limiting ring is fixedly connected to the lower end face of the dust lip, a limiting groove is formed in the upper end face of the sealing body, a sealing lip is fixedly connected to the inner wall of the sealing body, a buffer groove is formed in one side, adjacent to the sealing lip, of the sealing body, a framework is fixedly connected in the sealing body, a rubber ring is fixedly connected to the side end face of the sealing body, a sealing ring is fixedly connected to the bottom of the side end face of the sealing body, and a sealing groove is formed in the lower end face. The utility model has good sealing effect on the motor bearing and long service life of the sealing lip.

Description

Novel oil seal structure for motor bearing chamber

Technical Field

The utility model relates to the technical field of oil seals, in particular to a novel oil seal structure for a motor bearing chamber.

Background

The oil seal is a common name of a sealing element, namely a lubricating oil seal, and is a mechanical element for sealing grease (oil is the most common liquid substance in a transmission system and also refers to the general liquid substance in general), so that parts needing lubrication in a transmission part are isolated from a force-applying part, the lubricating oil cannot leak, the sealing element for static sealing and dynamic sealing (generally reciprocating motion) is called an oil seal, and an electric machine bearing chamber needs to be sealed with oil.

The dust lip of the current oil seal is fixed in the oil seal main body and is in rotating friction with the motor rotating shaft, and the dust lip is worn to quickly influence the dust prevention effect; meanwhile, the sealing lip of the existing oil seal structure is in a circular ring shape, and when the sealing lip is sleeved on a motor rotating shaft, elastic pressure of the whole sealing lip is applied to the motor rotating shaft, the friction force between the sealing lip and the rotating shaft is very large, the abrasion rate of the sealing lip is very high, and the service life is seriously reduced; and the existing oil seal structure mounting point is sealed only by a sealing ring, and the sealing ring can generate a leakage point after overlarge extrusion force and overlong service time, so that the effect of complete sealing cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel oil seal structure for a motor bearing chamber, which aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel oil blanket structure that motor bearing room was used, includes the seal, seal side end face top fixedly connected with fixing base, the fixing base up end runs through there is the fixed block hole, the mounting groove has been seted up to the seal up end, the inside joint of mounting groove has the dust lip, the draw-in groove has been seted up to the end face under the dust lip, the inside rotation of draw-in groove is connected with the bearing ball, end face fixedly connected with spacing ring under the dust lip, the spacing groove has been seted up to the seal up end, seal inner wall fixedly connected with seal lip, the dashpot has been seted up to seal lip and the adjacent one side of seal, the inside fixedly connected with skeleton of seal, seal side end face fixedly connected with rubber circle, seal side end face bottom fixedly connected with sealing washer, the seal groove has been seted up to the end face under the seal.

Preferably, the inner wall of one side, adjacent to the sealing body, of the clamping groove is arranged inside the mounting groove, and a bearing ball is clamped between the inner wall of the mounting groove and the inner ring inner wall of the mounting groove of the clamping groove.

Preferably, the position of the limit ring is matched with the limit groove, the thickness of one side, deviating from the sealing body, of the dust lip is gradually reduced, the diameter of the limit groove is smaller than that of the mounting groove, and the limit groove is not communicated with the mounting groove.

Preferably, the seal lips are two sets of fixed connection in proper order inside the seal totally, and one side that the seal lips deviate from the seal is the arc, the position of buffer slot corresponds with the most distant position of seal lip arcwall face distance seal, the skeleton corresponds with the position of seal lips inside the seal.

Preferably, two groups of rubber rings are sequentially and fixedly connected to the end face of the side of the sealing body, and the maximum thickness of the rubber rings is larger than that of the sealing ring.

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

1. the utility model sets a mounting groove on the upper end face of the sealing body, sets a clamping groove on the lower end face of the dustproof lip, the inner part of the clamping groove is rotatably connected with a bearing ball, the inner part of one side adjacent to the sealing body is arranged in the mounting groove through the clamping groove, the bearing ball is clamped by the inner wall of the clamping groove in the mounting groove and the inner wall of the inner ring of the mounting groove together, so that the resistance of the dustproof lip is smaller when the dustproof lip rotates, meanwhile, the lower end face of the dustproof lip is fixedly connected with a limiting ring, the upper end face of the sealing body is provided with a limiting groove, the position of the limiting ring is matched with the limiting groove, the diameter of the limiting groove is smaller than that of the mounting groove, the limiting groove is not communicated with the mounting groove, when the mounting groove is sleeved on the motor rotating shaft, the rotating shaft is larger than the inner ring of the mounting groove, so that the mounting groove and the motor rotating shaft rotate simultaneously, and the contact surface of the mounting groove and the motor rotating shaft cannot be abraded, and then the life of mounting groove is longer need not change to the dust lip of having solved current oil blanket is fixed in the oil blanket main part, with motor shaft rotary friction, leads to the problem that dust lip wearing and tearing influence dustproof effect very fast.

2. The utility model has good sealing effect on the motor bearing chamber and the motor rotating shaft by fixedly connecting the two groups of sealing lips on the inner wall of the sealing body in sequence, meanwhile, a buffer groove is arranged on one side of the sealing lip adjacent to the sealing body, the side of the sealing lip departing from the sealing body is arc-shaped, the position of the buffer groove corresponds to the position of the arc-shaped surface of the sealing lip farthest from the sealing body, so that the sealing lip can not have too large pressure on the rotating shaft when the rotating shaft of the motor is sealed by the sealing lip, and the friction force between the sealing lip and the rotating shaft can be reduced by smaller pressure, thereby the abrasion speed of the sealing lip can be obviously reduced, and then effectively improve the life of seal lip to solved current oil blanket structure seal lip and for the ring form, exert the elastic pressure of whole seal lip to the motor shaft when the cover is on the motor shaft, seal lip and pivot frictional force are big very much, lead to seal lip wear rate very fast and seriously reduce life's problem.

3. According to the utility model, two groups of rubber rings are sequentially fixed on the end surface of the side of the sealing body, the sealing ring is fixedly connected to the bottom of the end surface of the side of the sealing body, the fixed point of the oil seal structure and the motor bearing chamber is sealed through the rubber rings and the sealing ring, and meanwhile, the maximum thickness of the rubber rings is larger than that of the sealing ring, so that the rubber rings perform secondary sealing while the sealing ring seals the motor bearing chamber, and the sealing effect is better, thereby solving the problems that the sealing of the installation point of the existing oil seal structure is only realized by the sealing ring, the sealing ring can generate leakage points after overlarge extrusion force and overlong use time, and the complete sealing effect cannot be realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;

fig. 2 is a schematic structural view at a point a of the present invention.

In the figure: 1-a fixed seat, 2-a fixed hole, 3-a mounting groove, 4-a dust lip, 5-a clamping groove, 6-a limiting ring, 7-a limiting groove, 8-a rubber ring, 9-a sealing ring, 10-a sealing groove, 11-a sealing lip, 12-a sealing body, 13-a buffer groove, 14-a framework and 15-a bearing ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, an embodiment of the present invention is shown: the utility model provides a novel oil blanket structure that motor bearing room was used, including seal 12, 12 side end face tops fixedly connected with fixing base 1 of seal, 1 up end of fixing base runs through has fixed block hole 2, mounting groove 3 has been seted up to 12 up end of seal, 3 inside joints of mounting groove have dust lip 4, the terminal surface has been seted up to 4 lower terminal surfaces of dust lip 5, the inside rotation of draw-in groove 5 is connected with bearing ball 15, terminal surface fixedly connected with spacing ring 6 under the dust lip 4, spacing groove 7 has been seted up to 12 up end of seal, 12 inner wall fixedly connected with seal lip 11 of seal, buffer slot 13 has been seted up to seal lip 11 and the adjacent one side of seal 12, 12 inside fixedly connected with skeleton 14 of seal, 12 side end face fixedly connected with rubber ring 8 of seal, 12 side end face bottom fixedly connected with sealing washer 9 of seal, seal groove 10 has been seted up to the terminal surface under the seal 12.

Draw-in groove 5 and the adjacent one side inner wall of seal 12 are inside mounting groove 3, and draw-in groove 5 is held between the inner wall of 3 inside of mounting groove and the inner circle inner wall of mounting groove 3 with the clamp bearing ball 15, spacing ring 6 position and spacing groove 7 looks adaptation, one side thickness that dust lip 4 deviates from seal 12 reduces gradually, the diameter of spacing groove 7 is less than the diameter of mounting groove 3, and spacing groove 7 and mounting groove 3 do not communicate, seal lip 11 is two sets of fixed connection in proper order inside seal 12 altogether, and one side that seal lip 11 deviates from seal 12 is the arc, the position of dashpot 13 corresponds with the most distant point position of seal lip 11 arcwall apart from seal 12, skeleton 14 corresponds with seal lip 11's position inside seal 12, rubber circle 8 is two sets of fixed connection in proper order at seal 12 side end, the maximum thickness of rubber circle 8 is greater than the thickness of sealing washer 9.

The working principle is as follows: insert and insert out from one side of fixed connection fixing base 1 of 12 fixed connection seals 12 through with motor shaft from the terminal surface under seal 12, then push into the oil seal point of bearing room with the device, accomplish the sealed of device and bearing room through rubber circle 8 and sealing washer 9, it is fixed with motor bearing room with the device through fixed block hole 2, motor shaft inserts and runs through dust lip 4 and can prop dust lip 4 big, and then dust lip 4 passes through bearing ball 15 with seal 12 and forms bearing structure, effectively avoid dust lip 4 to damage because of the friction, can effectively reduce the frictional force of seal lip 11 and motor bearing through dashpot 13, improve the life of seal lip 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a novel oil blanket structure that motor bearing room was used, includes seal (12), its characterized in that: the sealing structure is characterized in that a fixing seat (1) is fixedly connected to the top of the side end face of the sealing body (12), a fixing block hole (2) penetrates through the upper end face of the fixing seat (1), a mounting groove (3) is formed in the upper end face of the sealing body (12), a dust lip (4) is clamped in the mounting groove (3), a clamping groove (5) is formed in the lower end face of the dust lip (4), a bearing ball (15) is rotatably connected in the clamping groove (5), a limiting ring (6) is fixedly connected to the lower end face of the dust lip (4), a limiting groove (7) is formed in the upper end face of the sealing body (12), a sealing lip (11) is fixedly connected to the inner wall of the sealing body (12), a buffer groove (13) is formed in one side, adjacent to the sealing body (12), a framework (14) is fixedly connected in the sealing body (12), and a rubber ring (8) is fixedly connected to the side end face of the sealing body (12), the sealing structure is characterized in that a sealing ring (9) is fixedly connected to the bottom of the side end face of the sealing body (12), and a sealing groove (10) is formed in the lower end face of the sealing body (12).

2. The novel oil seal structure for the motor bearing chamber as claimed in claim 1, wherein: the inner wall of one side, adjacent to the sealing body (12), of the clamping groove (5) is arranged inside the mounting groove (3), and a bearing ball (15) is clamped between the inner wall of the mounting groove (3) and the inner ring inner wall of the mounting groove (3) of the clamping groove (5).

3. The novel oil seal structure for the motor bearing chamber as claimed in claim 1, wherein: spacing ring (6) position and spacing groove (7) looks adaptation, one side thickness that keeps away from seal (12) in dustproof lip (4) reduces gradually, the diameter of spacing groove (7) is less than the diameter of mounting groove (3), and spacing groove (7) and mounting groove (3) do not communicate.

4. The novel oil seal structure for the motor bearing chamber as claimed in claim 1, wherein: sealing lip (11) are two sets of fixed connection in proper order inside seal (12), and one side that sealing lip (11) deviate from seal (12) is the arc, the position and the sealing lip (11) arcwall face of dashpot (13) correspond apart from seal (12) farthest point position, skeleton (14) correspond with the position of sealing lip (11) inside seal (12).

5. The novel oil seal structure for the motor bearing chamber as claimed in claim 1, wherein: two groups of rubber rings (8) are sequentially and fixedly connected to the end face of the side of the sealing body (12), and the maximum thickness of the rubber rings (8) is larger than that of the sealing ring (9).

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