9 results about "External Lip" patented technology

The utility model relates to the technical field of air spring shock absorber oil seals, and discloses an air spring oil seal with an annular framework on an outer lip, which comprises a metal framework and an elastic sealing body vulcanized and adhered on the metal framework, an outer lip and an inner lip are arranged on the elastic sealing body, the outer lip is used for sealing gas, and the inner lip is used for sealing oil; at least three lips are arranged on the inner side surface of the outer lip; an annular framework is embedded in the outer lip and connected with the elastic sealing body in a vulcanization mode. After installation, the annular framework can counteract air pressure in the air bag, and therefore the problems that the contact area and contact stress of the lip edge of the outer lip and a piston shaft are increased, friction force is increased sharply, lip abrasion and heating are accelerated, and oil and gas leakage occurs due to excessive deformation of the outer lip due to pressure are solved. Meanwhile, no less than three lip openings are formed in the outer lip, so that the sealing performance and durability of the outer lip to air in the air bag can be ensured.

The utility model relates to the technical field of air shock absorber oil seals, and discloses a gas-liquid double-seal air spring shock absorber oil seal which comprises a metal framework. The elastic sealing body is connected to the metal framework in a vulcanization manner and is provided with an outer lip for sealing gas in the air bag and an inner lip for sealing oil liquid in the piston cylinder; an outer lip opening and an outer supporting lip opening are sequentially formed in the inner side face of the outer lip in the axial direction. After installation, holding force applied by the outer lip spring acts on the outer supporting lip opening and the outer lip opening, the outer lip is supported in the radial direction through the outer supporting lip opening, the anti-pressure capacity and the anti-deformation capacity of the outer lip are remarkably improved, and excessive deformation of the outer lip under the action of high-pressure gas is effectively prevented. Through the improvement, the oil seal can still keep a stable sealing effect when bearing 1.5 MPa gas pressure, the service life of the shock absorber is remarkably prolonged, and the movement smoothness and riding comfort of the shock absorber are improved.

A valve arrangement is configured to seal to a surface (e.g., of an enclosure). The valve arrangement carries a seal member having at least one flexible lip that presses against the surface when the valve arrangement is mounted to the surface. Some seal members have a flexible inner lip. Other seal members have a flexible outer lip. Still other seal members have both an inner lip and an outer lip. The lip(s) of the seal member inhibit water intrusion into the valve arrangement. The lip(s) of the seal member allow the a seal between the valve arrangement and the surface even when the surface is out of flat.

In the water-stopping device used in the bypass system construction method, the aim is to simplify the configuration and installation work, and to enable the use of pipes with the largest possible diameter for the bypass unit to be installed. [Solution] The water-stopping device 4 used in the bypass system construction method comprises a seal case 41 and a seal ring 42. The seal case 41 is fixed to the inner surface of the peripheral wall of the manhole 2 near the end of the first pipeline 1A and near the end of the second pipeline 1B by mounting members (43, 44), and has a cylindrical portion 41a with an annular plate portion 41b. The seal ring 42 has a body 42a, an outer lip 42b that is pressed against the inner circumferential surface of the end of the first pipeline 1A and the end of the second pipeline 1B, and an inner lip 42c that is pressed against the outer circumferential surface of the pipes (bypass pipe 31, inner cylinder 32b of the expansion joint 32) that constitute the bypass unit 3.

The utility model relates to the technical field of air shock absorber oil seals, and discloses a thickened short-height outer lip oil seal which comprises a metal framework and an elastic sealing body bonded to the metal framework in a vulcanization mode. An outer lip and an inner lip are arranged on the elastic sealing body, the outer lip is used for sealing gas, and the inner lip is used for sealing oil; the height H and the thickness T of the outer lip satisfy 0.3 < = H / T < = 0.8; according to the scheme, through the thickened short lip design that the height H and the thickness T of the outer lip are limited to meet 0.3 < = H / T < = 0.8, it is ensured that the outer lip has a new structural state, that is, the height of the outer lip is shortened, the thickness of the outer lip is increased, it is ensured that the outer lip has the high pressure bearing capacity and has the small contact area with a piston rod, the deformation resistance of an elastic sealing body after the outer lip of the oil seal is pressed is improved, and the service life of the oil seal is prolonged. Excessive deformation can be prevented, and abrasion and heating of the outer lip can be effectively reduced.

The utility model relates to the technical field of bearings, in particular to a self-locking needle roller bearing, which comprises a shaft body, a needle roller bearing and a needle roller bearing, the top surface of the positioning ring protrudes to form an inner positioning lip and an outer positioning lip, a clamping groove is formed between the inner positioning lip and the outer positioning lip in a spaced mode, the positioning ring is arranged in the shaft body, the outer wall surface of the positioning ring is attached to the inner wall surface of the cavity of the shaft body, the end cover is used for fixing the shaft body and the positioning ring, and the bottom surface of the end cover protrudes to form an inner fixing lip and an outer fixing lip. The fixed inner lips and the fixed outer lips are arranged at intervals to form fixed grooves; through the design of a positioning inner lip, a positioning embedding part and a clamping groove on the positioning ring, a fixed inner lip, a fixed outer lip and a fixed groove on the end cover and the shaft body, primary fixation is formed under the cooperation of the clamping groove and the fixed inner lip, and secondary fixation is formed by embedding the shaft body and the positioning outer lip into the fixed groove under the cooperation of the shaft body and the positioning outer lip. The end cover and the shaft body form three-stage fixation, the connecting effect of the end cover and the shaft body is guaranteed, and the end cover is prevented from loosening.

A bearing unit includes two hydro-deflector sealing systems, each positioned on opposite axial ends of the bearing unit. Each hydro-deflector sealing system includes an external seal having a first radially outer lip, a second radially outer lip, and a radially inner anchoring lip formed at an opposite end. An angled connecting portion connects the second radially outer lip to an intermediate portion that extends to the radially inner anchoring lip. At least two ridges are formed on the intermediate portion. The first and second radially outer lips and the angled connecting portion define a W-shaped groove that deflect contaminants away. The hydro-deflector sealing system also has an internal seal having a primary lip, an anchoring lip formed, an intermediate portion connecting the primary lip and the anchoring lip, and a secondary lip toward the external seal that does not contact the external seal under normal operating conditions.

The utility model relates to self -lubricating rotary axle lip seal technical field discloses a kind of self -lubricating rotary axle lip seal assembly, including sealing lip block, the top of sealing lip block is provided with inner lip and outer lip, and the top of sealing lip block is provided with recess, the side of recess is sleeved with clamping ring, by setting the composite heat transfer structure of heat conduction ring, connecting column and reinforcing rib block in sealing lip block, so that the heat generated in the inner wall of sealing lip block can be efficiently transferred to the silicon oil in cooling groove, to realize rapid heat dissipation, significantly improve the cooling efficiency of sealing structure, by filling graphite and PTFE micro powder in fluorine rubber matrix, not only enhance the self -lubricating property of material, also improve wear resistance and service life, at the same time, cooling groove is used in cooperation with threaded fixing pipe, can periodically supplement silicon oil, further guarantee the cooling effect and sealing property of sealing structure, to effectively improve the overall strength, heat resistance and long-term stability of device.

The invention belongs to the technical field of compound sealing rings, and discloses an integrated reciprocating sealing ring with a grease storage groove and a working method.The integrated reciprocating sealing ring with the grease storage groove comprises a framework, the framework is coated with a rubber body, the rubber body is formed by vulcanizing the framework, and an integrated structure is formed; an inner lip is integrally formed on the inner side of the rubber body, an outer lip is integrally formed on the outer side of the rubber body, and a corrugated structure extending in the circumferential direction is arranged on the lip-shaped outline of the inner lip and / or the outer lip to form a grease storage groove used for storing lubricating grease. According to the invention, the comprehensive benefits of structure simplification, cost reduction and reliability improvement can be realized.