CN216519588U

CN216519588U - Long-service-life low-friction rubber oil seal for motor rotating shaft

Info

Publication number: CN216519588U
Application number: CN202123001706.4U
Authority: CN
Inventors: 孙中涛; 蔡俊克; 孙焕娟; 郗绍娟
Original assignee: Hebei Yihe Huixin Machinery Fittings Co ltd
Current assignee: Hebei Yihe Huixin Machinery Fittings Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-13
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a long-service-life low-friction rubber oil seal for a motor rotating shaft, which comprises a framework, wherein a rubber body is sleeved on the outer side of the framework, and the rubber body consists of a first vertical section, a first horizontal section and a first inclined section; the cross section of the framework is of an L-shaped structure, the vertical section of the framework is positioned in the middle of the interior of the first vertical section, and the horizontal section of the framework is positioned in the middle of the first horizontal section; one side of first slope section is provided with seal assembly, and the opposite side top of first slope section is provided with fastening component, and the inside of first slope section is provided with the elasticity strip, and a plurality of ring channels have been seted up to a lateral wall that first slope section just was kept away from to first vertical section, and a plurality of ring channels are from last to align to grid down on the lateral wall of first vertical section. The oil seal structure is reasonable and reliable in structure, and friction force between the oil seal and the shell can be increased through the arrangement of the annular groove, so that the stability of the oil seal after installation is ensured.

Description

Long-service-life low-friction rubber oil seal for motor rotating shaft

Technical Field

The utility model relates to the technical field of rubber oil seals, in particular to a long-service-life low-friction rubber oil seal for a motor rotating shaft.

Background

An oil seal is a mechanical element used to seal oil (oil is the most common liquid substance in a transmission system and also refers to a general liquid substance) which isolates parts needing lubrication from output parts in a transmission system so as not to allow the lubrication oil to leak. Static and dynamic seals (generally reciprocating) are called seals with seals.

Wherein, the patent No. CN207213165U discloses a rubber lip low friction oil seal pasted with PTFE sheet, which comprises an outer circle static seal part and a lip dynamic seal part, the outer circle static seal part is a rubber outer circle coated with a framework, the lip dynamic seal part is a rubber lip part with a sealing surface pasted with a PTFE sheet, the outer circle static seal part and the lip dynamic seal part are supported and connected into a whole by the framework, the oil seal has the characteristics of low friction to a shaft and higher durability when the shaft rotates at high speed, but, because the oil seal is tightly pasted with a rotating shaft, and because the rotating shaft rotates for a long time, the oil seal is worn, so that the oil seal and the rotating shaft generate clearance, thereby the sealing performance of the oil seal can be influenced, meanwhile, because the rotating shaft rotates, the temperature of liquid in the oil seal rises, thereby, because of the principle of thermal expansion and cold contraction, the contact surface of the oil seal and the liquid is often in the state of thermal contraction, which in turn may affect the life of the oil seal.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the related art, the utility model provides a long-service-life low-friction rubber oil seal for a motor rotating shaft, which aims to overcome the technical problems in the prior related art.

Therefore, the utility model adopts the following specific technical scheme:

a long-service-life low-friction rubber oil seal for a motor rotating shaft comprises a framework, wherein a rubber body is sleeved on the outer side of the framework and consists of a first vertical section, a first horizontal section and a first inclined section; the cross section of the framework is of an L-shaped structure, the vertical section of the framework is positioned in the middle of the interior of the first vertical section, and the horizontal section of the framework is positioned in the middle of the first horizontal section; one side of first slope section is provided with seal assembly, and the opposite side top of first slope section is provided with fastening components, and the inside of first slope section is provided with the elasticity strip.

Further, in order to increase the frictional force between oil blanket and the shell to guaranteed the stability after the oil blanket installation, a plurality of ring channels have been seted up to a lateral wall that first vertical section and keep away from first slope section, and a plurality of ring channels are from last to evenly arranged down on the lateral wall of first vertical section.

Further, in order to make the liquid temperature in the oil blanket rise or when reducing, can reduce the rubber body and receive expend with heat and contract with cold and the influence that produces to improved the life of oil blanket, a plurality of recesses are seted up at the top middle part of first horizontal segment, and are the top of annular and equidistance range at first horizontal segment between the recess, and the bottom of recess is provided with a plurality of protruding pieces, and the cross section of protruding piece sets up to the triangle-shaped structure.

Further, for reducing the area of contact of the rubber body with the pivot, thereby can reduce the frictional force between the rubber body and the pivot, thereby can reduce the rubber body and the long-time wearing and tearing that produce of working back with the pivot, and then improved the life of oil blanket, seal assembly comprises a plurality of seal lips, and the seal lip from last to arranging on the lateral wall of first slope section equidistance down, the lateral wall of seal lip sets up to the arc structure.

Furthermore, in order to enable the rubber body to be in close contact with the rotating shaft, the sealing performance between the rubber body and the rotating shaft can be improved, so that liquid in the oil seal cannot flow out, the sealing performance of the oil seal is further improved, the stability of the rotating shaft during working is ensured, meanwhile, when the sealing lip is worn after long-time working, the sealing lip can be tightly attached to the rotating shaft under the action of spring steel and an elastic strip, the sealing performance of the oil seal is further improved, the horizontal distance from the side wall of the first inclined section to the first vertical section is sequentially reduced from top to bottom, and the height of the first inclined section is smaller than that of the first vertical section; the fastening assembly comprises two connecting rings arranged at the top of the side wall of the first inclined section, an arc-shaped structure is arranged on the side wall of one end of each connecting ring, spring steel is arranged between the connecting rings, and the spring steel surrounds the top of the side wall of the first inclined section; the elastic strip is composed of a second horizontal section and a second inclined section, the second horizontal section is located in the middle of the inside of the first horizontal section, and the second inclined section is located in the middle of the inside of the first inclined section.

The utility model has the beneficial effects that:

1. the oil seal structure is reasonable and reliable in structure, and friction force between the oil seal and the shell can be increased through the arrangement of the annular groove, so that the stability of the oil seal after installation is ensured.

2. Through setting up seal assembly to reduce the area of contact of the rubber body with the pivot, thereby can reduce the frictional force between the rubber body and the pivot, thereby can reduce the rubber body and the long-time wearing and tearing that produce of pivot after working, and then improved the life of oil blanket.

3. Through setting up the recess to when making the liquid temperature in the oil blanket rise or reduce, can reduce the rubber body and receive expend with heat and contract with cold and the influence that produces, and then further improvement the life of oil blanket.

4. Through setting up fastening components and elastic strip, thereby make the rubber body can with the inseparable contact of pivot, thereby can increase the leakproofness between the rubber body and the pivot, thereby guaranteed that the liquid in the oil blanket can not flow, and then improved the leakproofness of oil blanket, guaranteed the pivot stability at the during operation, simultaneously, when seal lip produces wearing and tearing after long-time work, can make seal lip can also closely laminate with the pivot, thereby further improvement the leakproofness of oil blanket.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a partial cross-sectional view of a long-life low-friction rubber oil seal for a motor shaft according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a long-life low-friction rubber oil seal for a motor rotating shaft according to an embodiment of the utility model.

In the figure:

1. a framework; 2. a rubber body; 3. a first vertical section; 301. an annular groove; 4. a first horizontal segment; 401. a groove; 402. a raised block; 5. a first inclined section; 6. a seal assembly; 7. a fastening assembly; 701. a connecting ring; 702. spring steel; 8. an elastic strip.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, there is provided a long-life low-friction rubber oil seal for a rotating shaft of a motor.

Referring to the drawings and the detailed description, as shown in fig. 1-2, a long-life low-friction rubber oil seal for a motor rotating shaft according to an embodiment of the present invention includes a frame 1, wherein a rubber body 2 is sleeved outside the frame 1, and the rubber body 2 is composed of a first vertical section 3, a first horizontal section 4 and a first inclined section 5; the cross section of the framework 1 is of an L-shaped structure, the vertical section of the framework 1 is positioned in the middle of the inside of the first vertical section 3, and the horizontal section of the framework 1 is positioned in the middle of the first horizontal section 4; one side of first slope section 5 is provided with seal assembly 6, and the opposite side top of first slope section 5 is provided with fastening components 7, and the inside of first slope section 5 is provided with elastic strip 8.

By means of the technical scheme, the oil seal structure is reasonable and reliable in structure, and friction force between the oil seal and the shell can be increased through the arrangement of the annular groove 301, so that stability of the oil seal after installation is guaranteed.

In one embodiment, for the first vertical section 3 and the first horizontal section 4, a plurality of annular grooves 301 are formed in a side wall of the first vertical section 3 away from the first inclined section 5, and the plurality of annular grooves 301 are uniformly arranged on the side wall of the first vertical section 3 from top to bottom; a plurality of recesses 401 are seted up at the top middle part of first horizontal segment 4, and be the top of annular and equidistance arrangement at first horizontal segment 4 between the recess 401, the bottom of recess 401 is provided with a plurality of protruding pieces 402, and the cross section of protruding piece 402 sets up to the triangle-shaped structure to when making the liquid temperature in the oil blanket rise or reduce, can reduce the influence that the rubber body 2 received expend with heat and contract with cold and produced, and then further improvement the life of oil blanket.

In one embodiment, for seal assembly 6, seal assembly 6 comprises a plurality of seal lips, and the seal lip from last to arranging on the lateral wall of first slope section 5 of equidistance down, the lateral wall of seal lip sets up to the arc structure to reduce the area of contact of the rubber body 2 with the pivot, thereby can reduce the frictional force between the rubber body 2 and the pivot, thereby can reduce the rubber body 2 in with the pivot long-time work after the wearing and tearing that produce, and then improved the life of oil blanket.

In one embodiment, for the first inclined section 5, the horizontal distance from the side wall of the first inclined section 5 to the first vertical section 3 decreases from top to bottom, and the height of the first inclined section 5 is smaller than the height of the first vertical section 3. The fastening assembly 7 comprises two connecting rings 701 arranged at the top of the side wall of the first inclined section 5, one end side wall of each connecting ring 701 is provided with an arc-shaped structure, spring steel 702 is arranged between the connecting rings 701 (in addition, when the application is specific, the spring steel 702 can adopt alloy spring steel or non-alloy spring steel), and the spring steel 702 surrounds the top of the side wall of the first inclined section 5; elastic strip 8 comprises second horizontal segment and second slope section, and the second horizontal segment is located the inside middle part of first horizontal segment 4, thereby the second slope section is located the inside middle part of first slope section 5 and makes the rubber body 2 can with the inseparable contact of pivot, thereby can increase the leakproofness between the rubber body 2 and the pivot, thereby liquid in the oil blanket can not flow out has been guaranteed, and then the leakproofness of oil blanket has been improved, the stability of pivot at the during operation has been guaranteed, and simultaneously, when the seal lip produces wearing and tearing after long-time work, make the seal lip closely laminate with the pivot, thereby further improvement the leakproofness of oil blanket.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

When in actual application, the sealing assembly 6 provides the leakproofness with the lateral wall contact of pivot, through the in close contact with of seal lip with the pivot, has reduced the area of contact of rubber body 2 with the pivot to reduced the frictional force between oil blanket and the pivot, through the elastic force of elasticity strip 8 and spring steel 702, make more inseparable of seal lip and pivot laminating, thereby can avoid the possibility that the liquid in the oil blanket oozes.

In conclusion, by means of the technical scheme, the structure is reasonable and reliable, and the friction force between the oil seal and the shell can be increased by arranging the annular groove 301, so that the stability of the oil seal after installation is ensured; by arranging the sealing assembly 6, the contact area between the rubber body 2 and the rotating shaft is reduced, so that the friction force between the rubber body 2 and the rotating shaft can be reduced, the abrasion of the rubber body 2 and the rotating shaft after long-time working can be reduced, and the service life of an oil seal is prolonged; by arranging the groove 401, when the temperature of liquid in the oil seal is increased or reduced, the influence of expansion caused by heat and contraction caused by cold on the rubber body 2 can be reduced, and the service life of the oil seal is further prolonged; through setting up fastening components 7 and elastic strip 8, thereby make the rubber body 2 can with the inseparable contact of pivot, thereby can increase the leakproofness between the rubber body 2 and the pivot, thereby guaranteed that the liquid in the oil blanket can not flow, and then improved the leakproofness of oil blanket, guaranteed the stability of pivot at the during operation, simultaneously, when the seal lip produces wearing and tearing after long-time work, make the seal lip can also closely laminate with the pivot, thereby further improvement the leakproofness of oil blanket.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a motor is low friction rubber oil blanket of high life for pivot, includes skeleton (1), its characterized in that:

the rubber body (2) is sleeved on the outer side of the framework (1), and the rubber body (2) is composed of a first vertical section (3), a first horizontal section (4) and a first inclined section (5);

the cross section of the framework (1) is of an L-shaped structure, the vertical section of the framework (1) is positioned in the middle of the inside of the first vertical section (3), and the horizontal section of the framework (1) is positioned in the middle of the first horizontal section (4);

one side of first slope section (5) is provided with seal assembly (6), the opposite side top of first slope section (5) is provided with fastening components (7), the inside of first slope section (5) is provided with elastic strip (8).

2. The long-service-life low-friction rubber oil seal for the rotating shaft of the motor as claimed in claim 1, wherein a plurality of annular grooves (301) are formed in a side wall of the first vertical section (3) and far away from the first inclined section (5), and the plurality of annular grooves (301) are uniformly arranged on the side wall of the first vertical section (3) from top to bottom.

3. The long-service-life low-friction rubber oil seal for the rotating shaft of the motor as claimed in claim 2, wherein a plurality of grooves (401) are formed in the middle of the top end of the first horizontal section (4), the grooves (401) are annularly and equidistantly arranged at the top end of the first horizontal section (4), a plurality of protruding blocks (402) are arranged at the bottom end of the grooves (401), and the cross section of each protruding block (402) is of a triangular structure.

4. The long-service-life low-friction rubber oil seal for the rotating shaft of the motor as claimed in claim 2, wherein the horizontal distance from the side wall of the first inclined section (5) to the first vertical section (3) decreases from top to bottom, and the height of the first inclined section (5) is smaller than that of the first vertical section (3).

5. The long-service-life low-friction rubber oil seal for the rotating shaft of the motor as claimed in claim 3, wherein the sealing assembly (6) is composed of a plurality of sealing lips, the sealing lips are equidistantly arranged on the side wall of the first inclined section (5) from top to bottom, and the side wall of the sealing lips is arranged in an arc-shaped structure.

6. A high-life low-friction rubber oil seal for a motor rotating shaft as claimed in claim 2 or 4, wherein said fastening assembly (7) comprises two connecting rings (701) arranged on the top of the side wall of said first inclined section (5), and one end side wall of said connecting ring (701) is provided with an arc structure, and a spring steel (702) is arranged between said connecting rings (701), and said spring steel (702) surrounds the top of the side wall of said first inclined section (5).

7. A long-life low-friction rubber oil seal for motor shafts as claimed in claim 3, 4 or 5, wherein said elastic strip (8) is composed of a second horizontal section and a second inclined section, and said second horizontal section is located at the middle inside said first horizontal section (4), and said second inclined section is located at the middle inside said first inclined section (5).