CN211649060U - Oil seal - Google Patents
Oil seal Download PDFInfo
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- CN211649060U CN211649060U CN201922272651.7U CN201922272651U CN211649060U CN 211649060 U CN211649060 U CN 211649060U CN 201922272651 U CN201922272651 U CN 201922272651U CN 211649060 U CN211649060 U CN 211649060U
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- rubber body
- oil seal
- groove
- annular
- outer rubber
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Abstract
The utility model provides an oil seal, belonging to the technical field of mechanical sealing, comprising an outer rubber body in a ring shape, wherein, the two sides are provided with clamping grooves, and the outer side surface is provided with a gap groove; 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 as the outer rubber body, and is fixedly arranged in the inner ring of the outer rubber body and fixedly connected with the outer rubber body; the sealing lips are arranged on the inner annular wall of the inner rubber body in an annular manner, the number of the sealing lips is even, the contact surfaces of the sealing lips and the shaft are inclined planes, the inclined planes face to the central section direction vertical to the axis of the inner rubber body, and the side surfaces of the sealing lips are provided with annular accommodating grooves; the spring sleeve is sleeved at the inner end of the accommodating groove and is used for tightly pressing the inclined surface of the sealing lip and the shaft; and the limiting ring is made of rubber, is arranged in the accommodating groove and is used for preventing the spring sleeve from being separated from the accommodating groove. 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 sealing device comprises an inner rubber body, sealing lips, a shaft 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, the inclined planes face to the central section direction perpendicular to the axis of the inner rubber body, and the side surfaces of the sealing lips are provided with annular accommodating grooves;
the spring sleeve is sleeved at the inner end of the accommodating groove and is used for tightly pressing the inclined surface of the sealing lip and the shaft; and
the limiting ring is made of rubber materials, is arranged in the accommodating groove and is used for blocking the spring sleeve from being separated from the accommodating groove.
As the utility model discloses another embodiment, the breach groove link up the one side that the outer rubber body did not contact fluid, and the outside of metal framework flushes with the one side that does not contact fluid of the outer rubber body.
As another embodiment of the present invention, the holding groove is disposed coaxially with the inner rubber body, and the groove depth extends along the width direction of the seal lip.
As another embodiment of the utility model, the spacing ring is the right trapezoid shape, one side slope of spacing ring is towards the notch, and the opposite side is for being close to the plane that blocks of inner end spring housing, the bottom surface and the holding tank cell wall rigid coupling of spacing ring, for being used for the space that the spring housing passes through between the top surface of spacing ring and the holding tank cell wall.
As another embodiment of the present invention, the number of the sealing lips is six and is uniformly arranged in the width direction of the inner rubber body.
As another embodiment of the present invention, the cross-section of the seal lip is a quadrangle.
As another embodiment of the present invention, the bottom of the accommodating groove is an arc-shaped surface adapted to the spring sleeve.
As another embodiment of the present invention, the holding groove is provided on a side of the seal lip away from the center section.
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, and at the inside holding tank that is equipped with of seal lip, is equipped with the spring housing in the holding tank, can directly compress tightly between seal lip and the axle.
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 ring, 10, holding tank.
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 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 surfaces of the sealing lips 5 and a shaft are inclined planes 8, the inclined planes 8 face to the central cross section direction which is vertical to the axis of the inner rubber body 3, and annular accommodating grooves 10 are formed in the side surfaces of the sealing lips 5;
the spring sleeve 4 is sleeved at the inner end of the accommodating groove 10 and is used for tightly pressing the inclined surface 8 of the sealing lip 5 and the shaft; and
and the limiting ring 9 is made of rubber and arranged in the accommodating groove 10 and used for blocking the spring sleeve 4 from being separated from the accommodating groove 10.
In the present embodiment, please refer to fig. 1 and fig. 2, when in use, the oil seal is sleeved on a shaft for use, specifically, an inner annular surface, i.e. an inclined 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 an 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 depending on adhesive connection, 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, thereby weakening the impact of the outer rubber body 1 on the assembly body to a certain extent, and when the seal lip 5 is damaged, the inner rubber body 3 can be detached to be replaced, so that the whole oil seal does not need to be replaced, the cost is greatly saved, in addition, the contact surface of the sealing lip 5 and the shaft of the utility model is an inclined plane 8, as shown in figure 1, the number of the sealing lips 5 is even, namely, the sealing lips 5 with the same number are arranged on two sides of the central section vertical to the axis of the inner rubber body 3, and the inclined plane 8 faces to the inner side, namely, the inclined plane 8 inclines towards the central section, thus when the sealing lips 5 and the shaft extrude, a relatively larger extrusion force can be generated between the higher side of the inclined plane 8 and the shaft, so that the sealing performance is better, in addition, the specific description needs to be made, for example, the right side in figure 1 is provided with an oil medium, the oil medium needs to be sealed, the inclined plane 8 of the sealing lip 5 on the right side of the central section in the figure faces to the central section, namely, the right half part of the inclined plane 8 is higher, and can generate a larger extrusion force with the shaft, so that, the fine sealing is realized, because the inclined plane 8 on the right side of the central section faces the central section, so in order to provide oil seal balance, the inclined plane 8 on the left side of the central section is arranged and faces the central section, the inclined plane 8 is higher on the left half part and forms extrusion with the shaft, thus, an extrusion symmetrical structure is formed on the left and the right, the extrusion balance of the oil seal and the shaft is realized, and the generation of gaps caused by lateral deviation extrusion is prevented. In addition, in order to enhance the extrusion force between the sealing lip 5 and the shaft, the accommodating groove 10 is formed in the sealing lip 5, the spring sleeve 4 is arranged in the accommodating groove, and after the spring sleeve 4 is sleeved on the accommodating groove, a large extrusion force can be generated to the sealing lip 5 to extrude the sealing lip onto the shaft, so that the contact and sealing effect is enhanced.
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 oil seal provided by the utility model, holding tank 10 and the coaxial setting of interior rubber body 3, and the groove depth extends along the width direction of seal lip 5.
In this embodiment, the receiving groove 10 is annular and is opened along the extending direction of the inner rubber body 3, so that the receiving groove is also annular, and the depth direction extends along the width direction of the sealing lip 5, that is, extends into the sealing lip 5, and the groove bottom is just aligned with the higher end of the inclined surface 8, so that when the spring sleeve 4 is sleeved in the groove bottom, the pressing force on the sealing lip 5 can be transferred to the inclined surface 8, and the inclined surface 8 is pressed on the shaft.
As an embodiment of the utility model provides an oil seal, spacing ring 9 is right trapezoid shape, one side slope of spacing ring 9 is towards the notch, and the opposite side is for being close to the plane that blocks of inner end spring housing 4, the bottom surface and the 10 cell wall rigid couplings of holding tank of spacing ring 9, for being used for the space that spring housing 4 passes through between the top surface of spacing ring 9 and the 10 cell walls of holding tank.
This embodiment provides the concrete form of spacing ring 9, and spacing ring 9 is annular too, and it sets firmly inside holding tank 10 along the extending direction of holding tank 10, and its effect is deviate from in order to block the spring housing 4 that is located the holding tank 10 tank bottom, has guaranteed the stability of spring housing 4.
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.
As an embodiment of the oil seal provided by the utility model, the tank bottom of holding tank 10 is the arcwall face with 4 looks adaptations of spring housing.
As an embodiment of the oil seal provided by the present invention, the holding groove 10 is provided on the seal lip 5 away from a side of the central cross section.
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 (8)
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 sealing device comprises an inner rubber body, sealing lips, a shaft 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, the inclined planes face to the central section direction perpendicular to the axis of the inner rubber body, and the side surfaces of the sealing lips are provided with annular accommodating grooves;
the spring sleeve is sleeved at the inner end of the accommodating groove and is used for tightly pressing the inclined surface of the sealing lip and the shaft; and
the limiting ring is made of rubber materials, is arranged in the accommodating groove and is used for blocking the spring sleeve from being separated from the accommodating groove.
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 according to claim 1, wherein said receiving groove is provided coaxially with the inner rubber body, and the groove depth extends in the width direction of the seal lip.
4. An oil seal as defined in claim 3, wherein the limit ring is in the shape of a right trapezoid, one side of the limit ring has a slope facing the notch, the other side is a blocking plane close to the inner end spring housing, the bottom surface of the limit ring is fixedly connected with the wall of the accommodating groove, and a gap for the passage of the spring housing is formed between the top surface of the limit ring and the wall of the accommodating groove.
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 as defined in claim 4, wherein the bottom of the receiving groove is an arc-shaped surface adapted to the spring housing.
8. An oil seal as defined in claim 7, wherein said receiving groove opens on a side of the seal lip remote from said central section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272651.7U CN211649060U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272651.7U CN211649060U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211649060U true CN211649060U (en) | 2020-10-09 |
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ID=72696736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922272651.7U Active CN211649060U (en) | 2019-12-17 | 2019-12-17 | Oil seal |
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| Country | Link |
|---|---|
| CN (1) | CN211649060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
-
2019
- 2019-12-17 CN CN201922272651.7U patent/CN211649060U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
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