CN211649059U - Oil seal - Google Patents
Oil seal Download PDFInfo
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- CN211649059U CN211649059U CN201922272179.7U CN201922272179U CN211649059U CN 211649059 U CN211649059 U CN 211649059U CN 201922272179 U CN201922272179 U CN 201922272179U CN 211649059 U CN211649059 U CN 211649059U
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- oil seal
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Abstract
The utility model provides an oil seal, which belongs to the technical field of mechanical sealing and comprises an outer rubber body, a metal framework, an inner rubber body, an outer rubber body, a spring sleeve and a sealing lip, wherein the outer rubber body is annular, clamping grooves are arranged on two sides of the outer rubber body, and a gap groove is arranged on the outer side surface of the outer rubber body; the metal framework is made of annular steel and is arranged in the notch groove; the inner rubber body is annular and has the same width with the outer rubber body, the inner rubber body is fixedly arranged in the inner ring of the outer rubber body and is fixedly connected with the outer rubber body, and the inner rubber body is bonded with the outer rubber body; the spring sleeve is sleeved on the inner rubber body and is positioned in the notch at one end of the inner side surface of the outer rubber body; the sealing lips are arranged on the inner ring wall of the inner rubber body and are annularly arranged, the number of the sealing lips is even, the contact surfaces of the sealing lips and the shaft are inclined planes, and the inclined planes face to the central section direction perpendicular to the axis of the inner rubber body. The oil seal aims at solving the technical problems of high replacement cost and poor sealing effect of the oil seal.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, more specifically say, relate to an oil blanket.
Background
An oil seal is a mechanical element used to seal grease (oil is the most common liquid substance in a transmission system and also refers to a general liquid substance) and isolates parts needing lubrication from a driven part, so that the lubricating oil does not leak. The sealing principle of the oil seal involves two factors: the dynamic seal is the contact between a seal lip and the surface of a rotating shaft and is the most important function of an oil seal; and the second is the sealing of the cavity, which is mainly the positioning of the outer edge of the oil seal in the cavity.
For the traditional oil seal, the defects of heavy abrasion of a contact part with a shaft, short service life, high replacement cost, poor sealing effect, smooth contact surface and insufficient pressing force are faced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an oil blanket aims at solving the oil blanket replacement cost height, the not good technical problem of sealed effect.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is an oil seal including:
the outer rubber body is annular, clamping grooves matched with the assembly body are formed in the two sides of the outer rubber body, and a notch groove is formed in the outer side surface of the outer rubber body;
the metal framework is annular steel and is arranged in the notch groove, and the outer side surface of the metal framework is flush with the outer side surface of the outer rubber body;
the inner rubber body is annular and has the same width as the outer rubber body, the inner rubber body is fixedly arranged in the inner ring of the outer rubber body and is fixedly connected with the outer rubber body, and the inner rubber body is bonded with the outer rubber body;
the spring sleeve is sleeved on the inner rubber body and is positioned in a notch at one end of the inner side surface of the outer rubber body; and
the sealing device comprises an inner rubber body, sealing lips and a shaft, wherein the inner rubber body is provided with an inner annular wall, the number of the sealing lips is even, the contact surfaces of the sealing lips and the shaft are inclined planes, and the inclined planes face to the direction of a central section perpendicular to the axis of the inner rubber body.
As another embodiment of this application, the breach groove link up the outer rubber body and do not contact the one side of fluid, and the outside of metal framework flushes with the one side of the outer rubber body that does not contact fluid.
As another embodiment of this application, the cross-section of notch is the rectangle, be equipped with annular spacing rubber ring in the notch, the outer wall of the interior rubber body is connected to spacing rubber ring and is used for spacingly the spring housing.
As another embodiment of this application, spacing rubber ring is the rectangle shape that has the chamfer, the spring housing is located spacing rubber ring with in the space between the notch.
As another embodiment of this application, the quantity of sealing lip is six and evenly arrange in the width direction of interior rubber body.
As another embodiment of the present application, the cross-section of the sealing lip is quadrilateral.
As another embodiment of the application, the two side faces of the sealing lip are provided with oil blocking holes, and the oil blocking holes are blind holes.
As another embodiment of the present application, an oil receiving groove is formed at an inner end of the oil blocking hole.
As another embodiment of the application, the oil blocking holes are uniformly distributed along the length direction of the sealing lip.
The utility model discloses an oil blanket beneficial effect lies in, can connect through the outer rubber body of split type connection and the bonding formula of the interior rubber body, realizes the change of the internal rubber body, needn't change whole oil blanket, greatly reduced the replacement cost to original contact inclined plane form has strengthened sealed effect greatly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions 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 schematic cross-sectional structure view of an oil seal provided in an embodiment of the present invention;
fig. 2 is a partial structural schematic diagram of fig. 1.
In the figure: 1. outer rubber body, 2, metal framework, 3, the interior rubber body, 4, spring housing, 5, seal lip, 6, joint groove, 7, breach groove, 8, inclined plane, 9, spacing rubber ring, 10, hinder the oil hole, 11, hold the oil groove.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides an oil seal, including:
the outer rubber body 1 is annular, clamping grooves 6 matched with the assembly body are formed in the two sides of the outer rubber body, and a notch groove 7 is formed in the outer side surface of the outer rubber body;
the metal framework 2 is made of annular steel and is arranged in the gap groove 7, and the outer side surface of the metal framework 2 is flush with the outer side surface of the outer rubber body 1;
the inner rubber body 3 is annular and has the same width as the outer rubber body 1, the inner rubber body 3 is fixedly arranged in the inner ring of the outer rubber body 1 and is fixedly connected with the outer rubber body 1, and the inner rubber body 3 is bonded with the outer rubber body 1;
the spring sleeve 4 is sleeved on the inner rubber body 3 and is positioned in a notch at one end of the inner side surface of the outer rubber body 1; and
the sealing device comprises sealing lips 5 which are arranged on the inner annular wall of the inner rubber body 3 and are annularly arranged, the number of the sealing lips 5 is even, the contact surface of each sealing lip 5 and a shaft is an inclined surface 8, and the inclined surfaces 8 face the central section direction perpendicular to the axis of the inner rubber body 3.
In the present embodiment, please refer to fig. 1, when in use, the oil seal is sleeved on a shaft for use, specifically, the inner annular surface of the inner rubber body 3 is used for contacting with the shaft to realize sealing, the outer rubber body 1 is assembled in the assembly body adapted to the inner rubber body through the clamping groove 6 to realize fixing, the metal framework 2 plays a role of strengthening to effectively ensure the overall rigidity of the oil seal, the inner rubber body 3 and the outer rubber body 1 are arranged in a split type, but are connected by bonding, if the vibration amplitude is too large, the split type design can prevent the vibration force from being directly transmitted to the outer rubber body 1 to a certain extent, so as to weaken the impact of the outer rubber body 1 on the assembly body to a certain extent, and the inner rubber body 3 can be detached for replacement when the seal lip 5 is damaged, so that the whole oil seal does not need to be replaced, the cost is greatly saved, the spring sleeve 4 is sleeved on the inner rubber body 3, can cause certain extrusion to the internal rubber body 3, make the internal rubber body 3 can be better pressfitting on the surface of the axle, increase the packing force, in addition the utility model discloses a contact surface of seal lip 5 and axle is inclined plane 8, as shown in figure 1, and the number of seal lip 5 is the even number, namely set up the same number seal lip 5 with the both sides of the central cross-section that the axis of internal rubber body 3 is perpendicular, and inclined plane 8 is towards the inboard, namely inclined plane 8 inclines towards the central cross-section, like this when seal lip 5 extrudees with the axle, can produce the extrusion force that is relatively great between the higher side of inclined plane 8 and the axle, make its sealed better, need to explain specifically in addition, like the right side in figure 1 is equipped with the oil medium, need seal the oil medium, seal lip 5 inclined plane 8 on the right side of central cross-section in the figure is towards the central cross-section, namely right half portion of inclined plane 8 is higher, can produce great extrusion force with the axle, just so fine the passing of right side fluid of having prevented, realize fine sealing, because inclined plane 8 on central cross section right side all faces central cross section, so for oil seal a balance, so with the inclined plane 8 setting on central cross section left side also all face central cross section, this inclined plane 8 is left half portion higher, form and the axle between the extrusion, just so form the structure of an extrusion symmetry about just, the extrusion balance of oil blanket with the axle has been realized, prevent to produce the gap because the sideslip is extruded. The broken line in fig. 1 indicates a central section perpendicular to the axis of the inner rubber body 3.
As an embodiment of the utility model provides an oil blanket, breach groove 7 link up the one side that outer rubber body 1 did not contact fluid, and metal framework 2's the outside flushes with the one side that does not contact fluid of outer rubber body 1.
In the present embodiment, as shown in fig. 1, the right side is the oil medium side, and the notch groove 7 is located on the left side of the outer rubber body 1, i.e., not in contact with the oil medium, so as to avoid erosion.
As an embodiment of the utility model provides an oil seal, the cross-section of notch is the rectangle, be equipped with annular spacing rubber ring 9 in the notch, the outer wall of the internal rubber body 3 is just used for spacingly connected to spacing rubber ring 9 spring housing 4.
Referring to fig. 1 and 2, the present embodiment provides an embodiment of a spring housing 4, and the spring housing 4 is used for binding the inner rubber body 3 to make it fit better, and is limited by a limiting rubber ring 9 to prevent it from falling off.
As an embodiment of the oil seal provided by the utility model, the limiting rubber ring 9 is the rectangle shape that has the chamfer, the spring housing 4 is located the limiting rubber ring 9 with in the space between the notch.
As an embodiment of the oil seal provided by the present invention, the number of the seal lips 5 is six and is uniformly arranged in the width direction of the inner rubber body 3.
The present embodiment provides that the specific number of the seal lips 5 is six, and six are set as the optimum reasonable number according to the width of the inner rubber body 3.
As an embodiment of the oil seal provided by the present invention, the cross section of the seal lip 5 is a quadrangle.
In the present embodiment, since the inclined surface 8 is provided, the cross section of the seal lip 5 is made quadrangular.
Referring to fig. 1 and 2, as an embodiment of the oil seal provided by the present invention, oil blocking holes 10 are formed on two side surfaces of the seal lip 5, and the oil blocking holes 10 are blind holes.
As an embodiment of the oil seal provided by the present invention, the inner of the oil blocking hole 10 is provided with an oil receiving groove 11.
As an embodiment of the oil seal provided by the present invention, the oil blocking holes 10 are uniformly arranged along the length direction of the seal lip 5.
In the embodiment, the oil blocking hole 10 is arranged on the seal lip 5, when the seal is not tight due to vibration and other reasons, and a small amount of oil drops flow through the oil blocking hole 10, the oil drops enter the oil blocking hole 10 to form a certain degree of blocking, so that the oil drops are prevented from entering the contact surface between the shaft and the seal lip 5, and the sealing performance is further influenced.
An oil containing groove 11 with a large space is arranged in the oil blocking hole 10, so that more oil drops can be contained.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An oil seal, comprising:
the outer rubber body is annular, clamping grooves matched with the assembly body are formed in the two sides of the outer rubber body, and a notch groove is formed in the outer side surface of the outer rubber body;
the metal framework is annular steel and is arranged in the notch groove, and the outer side surface of the metal framework is flush with the outer side surface of the outer rubber body;
the inner rubber body is annular and has the same width as the outer rubber body, the inner rubber body is fixedly arranged in the inner ring of the outer rubber body and is fixedly connected with the outer rubber body, and the inner rubber body is bonded with the outer rubber body;
the spring sleeve is sleeved on the inner rubber body and is positioned in a notch at one end of the inner side surface of the outer rubber body; and
the sealing device comprises an inner rubber body, sealing lips and a shaft, wherein the inner rubber body is provided with an inner annular wall, the number of the sealing lips is even, the contact surfaces of the sealing lips and the shaft are inclined planes, and the inclined planes face to the direction of a central section perpendicular to the axis of the inner rubber body.
2. An oil seal as defined in claim 1, wherein said cutaway groove extends through a side of the outer rubber body not in contact with oil, and an outer side of the metal backbone is flush with the side of the outer rubber body not in contact with oil.
3. An oil seal as defined in claim 1, wherein the cross section of the notch is rectangular, and an annular limiting rubber ring is arranged in the notch and is connected with the outer wall of the inner rubber body and used for limiting the spring sleeve.
4. An oil seal as defined in claim 3, wherein said retainer rubber ring has a rectangular shape with a chamfered corner in cross section, and said spring housing is located in a space between said retainer rubber ring and said notch.
5. An oil seal according to claim 1, wherein the number of said seal lips is six and is uniformly arranged in the width direction of said inner rubber body.
6. An oil seal as defined in claim 1, wherein said seal lip is quadrilateral in cross-section.
7. An oil seal according to claim 1, wherein oil blocking holes are provided on both side surfaces of the seal lip, and the oil blocking holes are blind holes.
8. An oil seal as defined in claim 7, wherein an oil receiving groove is provided at an inner end of said oil blocking hole.
9. An oil seal according to claim 8, wherein said oil blocking holes are uniformly arranged along the length direction of the seal lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272179.7U CN211649059U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272179.7U CN211649059U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211649059U true CN211649059U (en) | 2020-10-09 |
Family
ID=72696726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922272179.7U Active CN211649059U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211649059U (en) |
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2019
- 2019-12-17 CN CN201922272179.7U patent/CN211649059U/en active Active
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