TWM516113U - Oil seal structure improvement - Google Patents

Description

Oil seal structure improvement

This creation is about an oil seal structure improvement, especially an oil seal structure combined with Teflon gasket, which has good bonding degree, low friction and good wear resistance, and has the functions of improving sealing and smooth operation. By.

Generally, in a driving structure provided with a drive shaft such as a vehicle or a mechanical device, the driving structure is usually filled with lubricating oil to provide smoothness and durability of the driving shaft for stretching or rotating, and is between the driving shaft and the shaft hole. An oil seal is provided to prevent oil from leaking out.

Common oil seal devices are roughly divided into single-piece and multi-piece designs. One-piece oil seals are generally made of rubber, which has good sealing properties. However, the friction coefficient is high, and there is a large friction force. Large, easy to cause oil seal loss and deformation, resulting in oil leakage, affecting the smoothness and durability of the drive structure. Therefore, there is a rubber seal body with a Teflon material guide, or with other metal materials. Combined with the multi-piece structure design, the Teflon material has low friction coefficient, anti-sticking property and weather resistance, etc., to achieve low friction operation and high sealing performance.

The oil seal device with multi-piece design is roughly divided into two types, namely, a clad type and an inlay type, according to the combination with the Teflon guide.

According to the conventional wrap-around oil seal structure, such as the domestic invention No. 092105739 The "forming method of the guide member applied to the oil seal" disclosed by Lee, the molding steps are as follows: a, preparation: preparation of Teflon sheet; b, punching: punching and forming of Teflon sheet The guide piece is in the form of an annular flat plate; c. Molding and heating forming: the annular flat-shaped guide piece initial embryo is integrally bent at the central shaft hole portion by the forming mold to form an arc-shaped guide surface, and at the same time, heating is utilized. The device heats the guiding member through the molding die, normalizes and refines the internal structure of the guiding member, and eliminates the residual stress caused by the molding of the guiding member; d, the finished product: after the molding die is opened, The guide member of the central shaft hole portion has an arc-shaped guide surface.

Another known oil-sealing structure is an oil seal device that incorporates a Teflon guide in a clamping manner, as disclosed in the Japanese Patent No. 093202128, which is provided with a ring seat, which is a ring seat The ring-shaped seat body of the integral structure has one or more annular recesses recessed in the inner ring surface of the ring seat, and a ring-shaped Teflon guide member is embedded in each of the groove grooves.

However, in the above-mentioned structure, the former is formed by punching a Teflon sheet into a ring-shaped guide piece initial embryo, and then integrally bending the guide piece into an arc-shaped guide surface, and After heating, the internal structure of the guiding member is normalized and refined to form a finished product of the guiding member, and then the guiding member is embedded and embedded in an oil-sealed metal annular housing, and then directly molded and bonded to the rubber outside the housing. The material is composed of a coating layer, and a sealing ring is integrally formed by the covering layer to form an oil sealing structure; the latter is provided with more than one annular fitting groove inside the ring seat, and the ring Teflon is guided. The pieces are embedded in each of the slots.

However, in the above-mentioned structure, regardless of the multi-piece oil seal which is covered or embedded, the difference in size caused by the cumulative tolerance of the multi-piece design may cause a large friction force, and the sealing property may also be lowered. At this time, the friction will be reduced due to less interference, and the oil leakage will occur. Health, affecting the structure operation and longevity, and the conventional forming method is complex, the number of processes is high, the production cost is high, and the overall structure is necessary for improvement.

The present invention provides an oil seal structure improvement comprising: a body integrally formed in a ring shape, and a shaft hole is arranged in the center thereof; at least one washer is a Teflon material application, and the gasket is integrally coupled thereto. The preset position of the end of the body; by the above-mentioned member, when the body of the rubber material is formed, the gasket is integrally combined with the preset position of the end of the body, and the bonding strength is good, the cumulative tolerance can be reduced, due to the iron fluoride The dragon material has many characteristics such as extremely low friction coefficient, good friction, heat resistance and wear resistance, which makes the operation smoother, improves the sealing performance, has good oil seal performance, and can improve the service life, and has industrial applicability. And innovative benefits.

The oil seal structure of the present invention is improved, and the Teflon-made gasket is integrally combined with the end of the body, and the joint degree is good, the cumulative tolerance can be reduced, and the Teflon material has a very low friction coefficient and good friction. Properties such as properties and heat resistance make the operation smoother, and the Teflon material has high wear resistance, so it can improve the sealing performance, the oil seal performance is good, and the service life can be improved, and the forming is easy and the cost is low. Moreover, the utility model has excellent practicality and convenience; in addition, the oil seal is formed by placing the gasket of the Teflon material into the mold of the formed rubber material body, and simultaneously forming the gasket when forming the body The integral part is integrated with the preset part of the end of the body, so that the rubber and the Teflon material can be tightly integrated into one form, that is, the end of the oil seal structure for sealing is combined with the low friction material, and the simultaneous forming makes the bonding degree good. And the wear resistance of the Teflon washer is higher than that of the oil seal body, which can provide excellent wear resistance; the washer of the Teflon material can be integrally integrated on the end of the oil seal body, which can be The body is coupled to the outer end or the inner end of the body, and a washer is respectively disposed at the outer end and the inner end, so as to improve the wear resistance and sealing performance of the end portions of the body, and the utility model has excellent industrial practicability. By.

A‧‧‧ oil seal

L1‧‧‧ first curve

L2‧‧‧ second curve

10‧‧‧ Ontology

11‧‧‧Axis hole

12‧‧‧Outside

121‧‧‧ inner edge

122‧‧‧

13‧‧‧Inside

131‧‧‧ inner edge

132‧‧‧

14‧‧‧ side edge

15‧‧‧ spacing

16‧‧‧Bundle

17‧‧‧Outside

20‧‧‧Washers

21‧‧‧ inside edge

30‧‧‧ Shock absorbers

31‧‧‧ inner cylinder

32‧‧‧Outer cylinder

33‧‧‧ kit

40‧‧‧Washers

41‧‧‧ inside edge

50‧‧‧Washers

51‧‧‧ inside edge

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is an exploded perspective view of a preferred embodiment of the present invention.

The third figure is a cross-sectional view of a preferred embodiment of the present invention.

The fourth figure is a cross-sectional view of a combination of a preferred embodiment and a shock absorber.

The fifth figure is a comparison table of the friction coefficient of a preferred embodiment of the present invention.

The sixth drawing is a cross-sectional view of the second embodiment of the creation.

Figure 7 is a cross-sectional view showing the combination of the second embodiment of the creation and the shock absorber.

Figure 8 is a cross-sectional view showing a third embodiment of the creation.

Figure 9 is a cross-sectional view showing the combination of the third embodiment of the creation and the shock absorber.

Figure 11 is a cross-sectional view showing a fourth embodiment of the creation.

Figure 11 is a cross-sectional view showing the combination of the fourth embodiment of the creation and the shock absorber.

First, please refer to the first to third figures. The oil seal structure improvement provided by the present invention mainly includes: a body 10 and at least one gasket 20.

The body 10 is integrally formed in a ring shape by a rubber material, and has a shaft hole 11 at the center thereof. The body 10 is respectively provided with an outer end 12 and an inner end 13 at the two ends of the shaft hole 11, and the outer end 12 And an inner side of the inner end 13 is annularly provided with an arc inner surface 121, 131, and the inner edge surface 121 of the outer end 12 is away from the inner side of the inner end 13 and is concavely formed with an arc inwardly. a rim 122; the body 10 is provided with a side edge 14 at an outer ring of the inner end 13 , and the side edge 14 protrudes from the inner end 13 , and a spacing 15 is formed between the side edge 14 and the inner end 13 ; A bundle of rings 16 is respectively sleeved on the outer side of the outer end 12 and the inner end 13 to provide a tightening positioning effect.

The gasket 20 is a Teflon material user, and the gasket 20 is placed in the mold of the molded body 10 in advance. When the body 10 of the rubber material is formed, the gasket 20 can be simultaneously bonded to the body 10 . The inner edge 12 of the outer end 12 is such that the rubber material and the Teflon material can be tightly integrated, and one of the inner edge faces 21 of the gasket 20 is flush with the inner edge surface 121 of the outer end 12 to form an oil seal A. .

By the above-mentioned member, the gasket 20 of the Teflon material is first placed in the mold of the forming body 10, and when the body 10 of the rubber material is formed, the gasket 20 is integrally coupled to the end of the body 10 at the same time. The part has good bonding degree and can reduce the cumulative tolerance. Due to the extremely low friction coefficient, good friction and heat resistance of the Teflon material, the friction is low, which makes the operation smoother and iron. The gasket 20 of the fluorocarbon material has high wear resistance, so that the sealing property can be improved, the oil leakage resistance is good, and the service life can be improved, and the forming is easy and possible. This is low, so the overall structure is very innovative and practical convenience.

In order to further understand the characteristics of the creation of the creation, the use of technical means and the desired effect, the use of the creation is described as follows: The composition of the creation is to set the gasket 20 in the mold of the forming body 10, when When the body 10 is formed, the gasket 20 is integrally joined to the preset position of the end of the body 10, that is, the assembly is completed.

For the use of the present invention, please refer to the fourth figure, which is a shock absorber structure of the vehicle. The shock absorber 30 is provided with an inner cylinder 31 and an outer cylinder 32 which are mutually retractable and actuated, and the inner cylinder 31 and A sleeve 33 is disposed between the outer cylinders 32, and lubricating oil is disposed between the inner cylinder 31 and the outer cylinder 32, so that the oil seal A is embedded inside the sleeve 33, and the inner cylinder 31 and the shaft hole 11 of the body 10 are mutually The inner sleeve 31 is positioned outside the inner cylinder 31, and the inner edge surface 121 of the outer end 12 of the body 10, the inner edge surface 21 of the gasket 20, and the inner portion The inner edge surface 131 of the end 13 abuts against the outer wall surface of the inner cylinder 31 to provide an oil seal effect.

Please refer to the fifth figure, which is a comparison table of friction coefficient between Teflon and general rubber materials. The horizontal axis is the displacement distance (mm) and the vertical axis is the friction force (N), of which the first is blue. The curve L1 is the Teflon material for forming the ultra-low friction coefficient washer, and the second curve L2 of the red is the rubber material of the general commercially available low friction coefficient oil seal. It can be observed from the table that the friction coefficient of the Teflon material is far. Below the friction coefficient of rubber, it has excellent low friction characteristics.

Please refer to the sixth embodiment of the present invention, which is a second embodiment of the present invention. The inner edge surface 131 of the inner end 13 of the body 10 is concavely provided with an arc-shaped one of the inner edges 132, and When the body 10 is formed, one of the Teflon material washers 40 is integrally bonded to the insert At the edge 132, the oil sealing effect of the low friction coefficient and the high sealing property is also achieved, and the inner cylinder 31 and the shaft hole 11 of the body 10 are mutually penetrated to position the body 10 sleeve outside the inner cylinder 31, and the The inner edge surface 121 of the outer end 12 of the body 10 and the inner edge surface 41 of the inner end 13 of the washer 40 abut against the outer wall surface of the inner cylinder 31, and can also provide an oil seal effect.

Please refer to the eighth embodiment of the present invention, which is a third embodiment of the present invention, which is formed on the inner side of the outer end 12 and the inner end 13 respectively, and has an arc-shaped inner edge surface 121, 131. And the inner edge surfaces 121 and 131 of the inner end and the outer end 12 are respectively recessed into the inner ring with arc-shaped insert edges 122 and 132. When the body 10 is formed, the two washers of the Teflon material 20 are 40 is integrally coupled to each of the flanges 122 and 132, and the oil sealing effect of the low friction coefficient and the high sealing property is also achieved, and the inner cylinder 31 and the shaft hole 11 of the body 10 are mutually penetrated to set the body 10 The bundle is positioned outside the inner cylinder 31, and the inner edge surface 21 of the gasket 20 at the outer end 12 of the body 10 and the inner edge surface 41 of the gasket 40 of the inner end 13 abut against the outer wall surface of the inner cylinder 31, and can also provide an oil seal effect.

Please refer to the tenth to eleventh drawings, which is a fourth embodiment of the present invention, in which a gasket 50 of a Teflon material is previously placed in a mold for forming the body 10, and the gasket 50 is set. When the body 10 is formed away from the inner end 13 , the gasket 50 can be integrally joined to one end of the body 10 away from the inner end 13 , that is, an outer end 17 is formed, which can also achieve a low friction coefficient and a seal. The oil seal function is high, and the inner cylinder 31 and the shaft hole 11 of the body 10 are interpenetrated to position the body 10 to the outside of the inner cylinder 31, and the inner edge 51 of the washer 50 of the outer end 17 of the body 10 The inner edge surface 131 of the inner end 13 abuts against the outer wall surface of the inner cylinder 31, and can also provide an oil seal effect.

The oil seal structure of the present invention is improved, and is integrally assembled at the end of the body 10 The Teflon 20 gasket has a good combination of joints to reduce the cumulative tolerance. The Teflon material has a very low friction coefficient, good friction and heat resistance, which makes the operation smoother. The Teflon material of the Teflon 20 has high wear resistance, so that the sealing property can be improved, the oil seal performance is good, and the service life can be improved, and the forming is easy and the cost is low, and the utility model and the convenience are excellent; The oil seal is formed by placing the washer 20 of the Teflon material into the mold of the molded rubber body 10, and when the body 10 is formed, the gasket 20 can be integrally joined to the preset portion of the end of the body 10 at the same time. The rubber and the Teflon material can be tightly integrated into one form, that is, the end of the oil seal structure for sealing is combined with the low friction material, and the simultaneous forming makes the bonding degree good, and the wear of the Teflon gasket 20 is good. The material is higher than the material of the oil seal body 10, and it can provide excellent wear resistance.

The gasket 20 of the Teflon material may be integrally coupled to the end of the oil seal body 10, and may be integrally coupled to the outer end 12 or the inner end 13 of the body 10, or may be respectively provided at the outer end 12 and the inner end 13 respectively. The washers 20 and 40 can improve the wear resistance and sealing performance of the ends of the body 10, and have excellent industrial practical effects.

In summary, the "oil seal structure improvement" disclosed in the present invention provides an oil seal structure integrally integrated with the Teflon gasket 20, which is formed when the body 10 of the rubber material is formed, and the gasket 20 is integrally coupled to the body. 10 end preset position, its combination strength is good, can reduce the cumulative tolerance, because Teflon material has a very low friction coefficient, good friction, heat resistance and wear resistance and other characteristics, making the operation smoother. It can improve the sealing performance, the oil seal performance is good, and the service life can be improved. The whole industry has practical and practical benefits, and its structure has not been seen in various books or public use. It is in line with the requirements of new patent applications. Mingjian, granting patents as soon as possible, is a prayer.

To be clear, the above is the specific embodiment of the creation and the technical principles applied. If the changes made according to the concept of this creation, the functional role produced by it does not exceed the spirit of the manual and the drawings. At the time, it should be combined with Chen Ming within the scope of this creation.

A‧‧‧ oil seal

10‧‧‧ Ontology

11‧‧‧Axis hole

12‧‧‧Outside

121‧‧‧ inner edge

122‧‧‧

13‧‧‧Inside

131‧‧‧ inner edge

14‧‧‧ side edge

15‧‧‧ spacing

16‧‧‧Bundle

20‧‧‧Washers

21‧‧‧ inside edge

Claims (8)

The invention relates to an oil seal structure improvement comprising: a body integrally formed in a ring shape, and a shaft hole is arranged in a center thereof; at least one washer is a Teflon material application, and the gasket is integrally coupled to the body end Preset location. According to the improvement of the oil seal structure according to the first aspect of the patent application, the center of the body is provided with a shaft hole, and the body is respectively provided with an outer end and an inner end at the two ends of the shaft hole, and the inner side of each of the outer end and the inner end respectively The annular recess is provided with an inner edge surface of the arc shape, and the inner edge surface of the outer end is recessed from the inner side of the inner end to form an arc-shaped one of the inner edge, and the gasket integrally joins the outer edge of the outer edge At the office. According to the improvement of the oil seal structure according to the first aspect of the patent application, the center of the body is provided with a shaft hole, and the body is respectively provided with an outer end and an inner end at the two ends of the shaft hole, and the inner side of each of the outer end and the inner end respectively The annular recess has an arcuate inner edge surface, and the inner edge of the inner body end is concavely disposed with an arc-shaped one edge facing the inner ring, and the gasket integrally joins the inner edge of the inner edge. According to the improvement of the oil seal structure according to the first aspect of the patent application, the center of the body is provided with a shaft hole, and the body is respectively provided with an outer end and an inner end at the two ends of the shaft hole, and the inner side of each of the outer end and the inner end respectively The annular recess has an inner edge surface of the arc shape, and the inner edge surfaces of the inner end and the outer end are respectively concavely provided with an arc-shaped arc-shaped inserting edge at the inner end and the outer end. The inserts are integrally joined to the gasket. According to the improvement of the oil seal structure according to claim 1, wherein the body is provided with a shaft hole at the center, the body is respectively provided with an inner end at one end of the shaft hole, and the gasket is integrally formed at one end away from the inner end, Form one of the outer ends of the Teflon material. According to the improvement of the oil seal structure according to the first aspect of the patent application, wherein the center of the body is provided with an axis a hole, the body is respectively provided with an outer end and an inner end at the two ends of the shaft hole, and the body is provided with a side edge on the outer ring of the inner end, and the side edge protrudes from the inner end. A spacing is formed between the inner ends. The oil seal structure is improved according to the scope of claim 1 of the patent application, wherein the body is a rubber material application. According to the oil seal structure of the first aspect of the patent application, the outer end of the body and the outer side of the inner end are respectively sleeved with a bundle of rings.