CN214999042U - Integrated easily-installed air spring oil seal - Google Patents
Integrated easily-installed air spring oil seal Download PDFInfo
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- CN214999042U CN214999042U CN202120867916.2U CN202120867916U CN214999042U CN 214999042 U CN214999042 U CN 214999042U CN 202120867916 U CN202120867916 U CN 202120867916U CN 214999042 U CN214999042 U CN 214999042U
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Abstract
The utility model discloses an integrated easily-installed air spring oil seal, which comprises a sealing main body and a framework; wherein the seal body includes an outer seal portion located on an outer side of the seal body and a lip portion located on an inner side of the seal body; the peripheral wall of the outer sealing part is provided with at least one circle of sealing bulge; the inner side part of the lip part is provided with at least one sealing lip protruding inwards; the framework is embedded in the sealing main body to support the sealing main body. The utility model discloses integrated into one piece, spare part is few, not only can reduce material cost and processing cost, can also guarantee size precision.
Description
Technical Field
The utility model relates to an air spring oil blanket is easily installed to integral type.
Background
At present, the existing gas spring comprises a cylinder body and a shaft body, and a partition part needs to be arranged between the cylinder body and the shaft body. The existing partition part is characterized in that a partition piston is arranged between a cylinder body and a shaft body, the outer peripheral wall of the partition piston is in sealing connection with the inner wall of the cylinder body through two O-shaped rings, the inner side portion of the partition piston is in sealing connection with the shaft body through a plate-type gas spring oil seal, the plate-type gas spring oil seal is fixed through a pressing piece, and the upper end portion of the partition piston is bent through rolling to form a bending portion so as to fix the pressing piece. This structure contains many parts, resulting in high material costs; moreover, the parts need to be manually assembled, and a rolling and bending process is also needed, so that the process is complex, and the processing cost is increased; in addition, the dimensional accuracy of a plurality of assembled parts cannot be guaranteed, and the dimensional accuracy error is large.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide an air spring oil blanket is easily installed to integral type, its integrated into one piece, spare part is few, not only can reduce material cost and processing cost, can also guarantee size precision.
In order to solve the technical problem, the technical scheme of the utility model is that: an integrated easily-installed gas spring oil seal comprises a seal main body and a framework; wherein the content of the first and second substances,
the seal body includes an outer seal portion located on an outer side of the seal body and a lip portion located on an inner side of the seal body;
the peripheral wall of the outer sealing part is provided with at least one circle of sealing bulge;
the inner side part of the lip part is provided with at least one sealing lip protruding inwards;
the framework is embedded in the sealing main body to support the sealing main body.
Further for connection with a spring, the sealing body further comprises a boss at a lower end of the sealing body for connection with the spring.
Further provided is a concrete structure of the skeleton, the skeleton comprising a first axial extension portion, a first radial extension portion, a second axial extension portion and a second radial extension portion; wherein the content of the first and second substances,
the lower end part of the first axial extension part is connected with the outer side part of the first radial extension part;
the lower end part of the second axial extension part is connected with the inner side part of the first radial extension part;
the upper end of the second axial extension is connected to the outer side of the second radial extension.
Further to support the outer seal, the first axially extending axial portion is embedded in the outer seal to support the outer seal;
an inner side of the second radially extending portion extends into the lip.
Further, an assembly hole for inserting a shaft body is formed in the sealing main body, and the sealing lip is suitable for being in sealing butt joint with the shaft body in the assembly hole;
the hole wall of the assembly hole surrounds the outer side of the shaft body and is in clearance fit with the shaft body.
In order to store lubricating grease, at least two sealing lips which are sequentially arranged along the axial direction of the sealing main body are arranged on the inner side part of the lip; wherein the content of the first and second substances,
and a lubricating cavity is arranged between every two adjacent sealing lips.
Further, a specific shape of the sealing protrusion is provided, and the sealing protrusion has an arc-shaped structure in an axial cross section of the sealing body.
Further providing a specific arrangement mode of the sealing bulges, wherein the peripheral wall of the outer sealing part is provided with two sealing bulges, one of the sealing bulges is arranged at the upper end part of the peripheral wall of the outer sealing part, and the other sealing bulge is arranged at the lower end part of the peripheral wall of the outer sealing part;
and/or be equipped with two on the periphery wall of external seal portion sealed protruding, two the interval between the sealed protruding is greater than 2 mm.
Further providing specific dimensions of the sealing main body, wherein the outer diameter D of the sealing main body is 10-50 mm;
and/or the diameter of the lip tip of the sealing lip is 5-30 mm;
and/or the height L of the sealing main body is 4-20 mm.
Furthermore, an assembly hole for inserting the shaft body is formed in the sealing main body; the number of the sealing lips is two, namely an upper sealing lip and a lower sealing lip; wherein the content of the first and second substances,
the upper sealing lip is suitable for being in sealing butt joint with a shaft body in the assembling hole, and the interference magnitude of the lip tip of the upper sealing lip matched with the shaft body is 0.2-1.5 mm;
and/or the lower sealing lip is suitable for being in sealing butt joint with a shaft body in the assembling hole, and the interference magnitude of the lip tip of the lower sealing lip matched with the shaft body is 0.2-0.6 mm;
and/or the upper sealing lip is provided with a first front lip angle A and a first rear lip angle B, wherein the first front lip angle A is larger than the first rear lip angle B, the first front lip angle A is 40-70 degrees, and the first rear lip angle B is 15-35 degrees;
and/or the lower sealing lip is provided with a second front lip angle C and a second rear lip angle D, wherein the second front lip angle C is larger than the second rear lip angle D, the second front lip angle C is 55-75 degrees, and the second rear lip angle D is 15-35 degrees;
and/or the lip tip of the upper sealing lip and the lip tip of the lower sealing lip are respectively provided with a fillet.
After the technical scheme is adopted, the integrated easily-installed gas spring oil seal is applied to a gas spring, the gas spring comprises a cylinder body and a shaft body, the sealing lip is suitable for abutting against the shaft body in a sealing mode, and the sealing bulge is suitable for abutting against the inner wall of the cylinder body in a sealing mode. The integrated easily-installed gas spring oil seal is integrally formed in a die, only comprises two components and does not need to be assembled, so that the material cost and the processing cost are reduced, no assembly error exists, and the dimensional precision can be ensured; and the structure of integral type is simpler, easy installation. In addition, the sealing bulge and the sealing lip have good elasticity, and can compensate each other in the radial direction, so that the sealing performance can be improved.
Drawings
FIG. 1 is a schematic diagram of a shut-off piston of the prior art;
FIG. 2 is a schematic structural view of the integrated easy-to-install gas spring oil seal of the present invention;
fig. 3 is a detail view of a portion of fig. 2.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example one
As shown in fig. 1 to 3, an integrated easy-to-install gas spring oil seal comprises a seal main body 100 and a framework 200; wherein the content of the first and second substances,
the sealing body 100 comprises an outer sealing part 1 located at the outer side of the sealing body 100 and a lip part 2 located at the inner side of the sealing body 100;
the peripheral wall of the outer sealing part 1 is provided with at least one circle of sealing bulge 3;
the inner side part of the lip part 2 is provided with at least one sealing lip protruding inwards;
the frame 200 is embedded in the sealing body 100 to support the sealing body 100; in this embodiment, the integral type is easily installed gas spring oil blanket and is applied to in the gas spring, the gas spring includes cylinder body and axis body, the seal lip be suitable for with the sealed butt of axis body, sealed arch 3 be suitable for with the sealed butt of inner wall of cylinder body. The sealing body 100 and the framework 200 are both of annular structures, the sealing protrusion 3 and the sealing lip have good elasticity and can compensate each other in the radial direction, so that the sealing performance can be improved, and the interference of the sealing protrusion 3 and the cylinder body in sealing and abutting connection can be 0.25-0.35 mm; in the embodiment, the interference of the sealing bulge 3 and the cylinder body in sealing abutment is 0.25 mm.
In the prior art, a partition piston 300 is arranged between a cylinder body and a shaft body in the gas spring, the outer peripheral wall of the partition piston 300 is hermetically connected with the inner wall of the cylinder body through two O-shaped rings 400, the inner side part of the partition piston 300 is hermetically connected with the shaft body through a plate-type gas spring oil seal 500, the plate-type gas spring oil seal 500 is fixed through a pressing piece 600, and the upper end part of the partition piston 300 is bent through rolling to form a bent part 700 so as to fix the pressing piece 600.
In the embodiment, the partition piston 300 is replaced by the integrated easily-installed gas spring oil seal which is integrally formed in a die and only comprises two components without assembly, so that the material cost and the processing cost are reduced, no assembly error exists, and the dimensional accuracy can be ensured; and the structure of integral type is simpler, easy installation.
As shown in fig. 2, the sealing body 100 may further include a boss 4 at a lower end portion of the sealing body 100 for coupling with a spring; specifically, one end of the spring is suitable for being sleeved on the boss 4 to position one end of the spring, and the height H of the boss 4 can be 1-5 mm; in the present embodiment, the height H of the boss 4 is 1 mm.
As shown in fig. 2, the backbone 200 is, for example and without limitation, a structure comprising a first axial extension 5, a first radial extension 6, a second axial extension 7, and a second radial extension 8; wherein the content of the first and second substances,
the lower end of the first axial extension 5 is connected to the outer side of the first radial extension 6;
the lower end of the second axial extension 7 is connected to the inner side of the first radial extension 6;
the upper end of the second axial extension 7 is connected to the outer side of the second radial extension 8; through set up on the skeleton 200 the primary shaft extends to portion 5, first radial extension 6, secondary shaft extension to portion 7 and the radial extension 8 of second, has increased the number of times of bending of skeleton 200, and then has strengthened greatly skeleton 200's support intensity can prevent integral type easily installs the air spring oil blanket and warp at the installation in compression, has avoided the integral type easily installs the air spring oil blanket and is damaged.
As shown in fig. 2, the first shaft extension portion 5 is embedded in the outer sealing portion 1 to support the outer sealing portion 1, so that the sealing protrusion 3 is in interference fit with the cylinder body;
the inner side of the second radial extension 8 extends into the lip 2.
As shown in fig. 2, the seal body 100 is provided therein with a fitting hole 9 into which a shaft body is inserted, and the seal lip is adapted to be in sealing abutment with the shaft body in the fitting hole 9;
the hole wall of the assembly hole 9 is surrounded on the outer side of the shaft body and is in clearance fit with the shaft body; specifically, the fit clearance between the hole wall of the assembly hole 9 and the shaft body can be 0.1-0.2 mm, and when the shaft body jumps in a large range, the hole wall of the assembly hole 9 can restrain and correct the shaft body so as to eliminate the jump of the shaft body; in this embodiment, the fit clearance between the hole wall of the fitting hole 9 and the shaft body is 0.1 mm.
As shown in fig. 2, at least two sealing lips may be disposed on the inner side of the lip 2 and arranged in sequence along the axial direction of the sealing body 100; wherein the content of the first and second substances,
a lubricating cavity 10 is arranged between two adjacent sealing lips, and the distance between the lip tips of the two adjacent sealing lips in the axial direction of the sealing main body 100 can be 1-2 mm; in the present embodiment, the distance between the lip tips of two adjacent sealing lips in the axial direction of the sealing main body 100 is 1 mm; the lubricating cavity 10 is suitable for coating and storing lubricating grease, lubricating oil and the like so as to play a lubricating role, and further the service life of the sealing lip can be prolonged. In this embodiment, the number of the sealing lips is two, so that a double seal can be formed with the shaft body, thereby improving the sealing effect.
As shown in fig. 2, the sealing protrusion 3 may have a circular arc-shaped structure in an axial cross section of the sealing body 100; specifically, the sealing protrusion 3 is equivalent to an O-ring 400 installed on the partition piston 300 in the prior art, and the O-ring 400 may axially shift relative to the partition piston 300, thereby affecting the sealing performance; the sealing bulge 3 in the embodiment can effectively solve the problem of the movement of the O-shaped ring 400, and the sealing effect is greatly improved after the sealing bulge 3 is in sealing and abutting contact with the cylinder body; more specifically, on the axial cross section of the sealing main body 100, the arc radius of the sealing protrusion 3 may be 0.5-3.5 mm; in the present embodiment, the radius of the arc of the sealing protrusion 3 is 0.5 mm.
As shown in fig. 2, two sealing protrusions 3 are arranged on the outer peripheral wall of the outer sealing part 1, one of the sealing protrusions 3 is arranged at the upper end of the outer peripheral wall of the outer sealing part 1, and the other sealing protrusion 3 is arranged at the lower end of the outer peripheral wall of the outer sealing part 1;
the distance between the two sealing bulges 3 is more than 2 mm; specifically, the upper and lower both ends of the periphery wall of outer sealing portion 1 set up one respectively sealed arch 3 to make two interval between sealed arch 3 is greater than 2mm, and its aim at works as sealed arch 3 with when the cylinder body butt was in order to form sealedly, reduce the radial beat of the easy installation air spring oil blanket of integral type can play fine support positioning effect.
As shown in fig. 2, the outer diameter D of the sealing body 100 may be 10 to 50 mm;
the diameter of the lip tip of the sealing lip can be 5-30 mm;
the height L of the sealing body 100 can be 4-20 mm; in this embodiment, the outer diameter D of the sealing body 100 is 10mm, and the height L of the sealing body 100 is 4 mm.
As shown in fig. 2 and 3, two sealing lips are provided, namely an upper sealing lip 11 and a lower sealing lip 12; wherein the content of the first and second substances,
the upper sealing lip 11 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of matching the lip tip of the upper sealing lip 11 with the shaft body can be 0.2-1.5 mm;
the lower sealing lip 12 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of the lip tip of the lower sealing lip 12 matched with the shaft body can be 0.2-0.6 mm;
the upper sealing lip 11 is provided with a first front lip angle A and a first rear lip angle B, the first front lip angle A is larger than the first rear lip angle B, the first front lip angle A can be 40-70 degrees, and the first rear lip angle B can be 15-35 degrees;
the lower seal lip 12 has a second front lip angle C and a second rear lip angle D, the second front lip angle C is greater than the second rear lip angle D, the second front lip angle C may be 55 ° to 75 °, and the second rear lip angle D may be 15 ° to 35 °;
the lip tip of the upper sealing lip 11 and the lip tip of the lower sealing lip 12 are respectively provided with a fillet, and the radius of each fillet is 0.1 mm;
in this embodiment, the diameter of the lip tip of the upper seal lip 11 is 5mm, the lip tip of the upper seal lip 11 and the interference of the shaft body fit are 0.2mm, the diameter of the lip tip of the lower seal lip 12 is 5mm, the lip tip of the lower seal lip 12 and the interference of the shaft body fit are 0.2mm, the first front lip angle a is 40 °, the first rear lip angle B is 15 °, the second front lip angle C is 55 °, and the second rear lip angle D is 15 °.
Example two
As shown in fig. 1 to 3, an integrated easy-to-install gas spring oil seal comprises a seal main body 100 and a framework 200; wherein the content of the first and second substances,
the sealing body 100 comprises an outer sealing part 1 located at the outer side of the sealing body 100 and a lip part 2 located at the inner side of the sealing body 100;
the peripheral wall of the outer sealing part 1 is provided with at least one circle of sealing bulge 3;
the inner side part of the lip part 2 is provided with at least one sealing lip protruding inwards;
the frame 200 is embedded in the sealing body 100 to support the sealing body 100; in this embodiment, the integral type is easily installed gas spring oil blanket and is applied to in the gas spring, the gas spring includes cylinder body and axis body, the seal lip be suitable for with the sealed butt of axis body, sealed arch 3 be suitable for with the sealed butt of inner wall of cylinder body. The sealing body 100 and the framework 200 are both of annular structures, the sealing protrusion 3 and the sealing lip have good elasticity and can compensate each other in the radial direction, so that the sealing performance can be improved, and the interference of the sealing protrusion 3 and the cylinder body in sealing and abutting connection can be 0.25-0.35 mm; in the present embodiment, the interference of the sealing protrusion 3 in sealing abutment with the cylinder body is 0.3 mm.
In the prior art, a partition piston 300 is arranged between a cylinder body and a shaft body in the gas spring, the outer peripheral wall of the partition piston 300 is hermetically connected with the inner wall of the cylinder body through two O-shaped rings 400, the inner side part of the partition piston 300 is hermetically connected with the shaft body through a plate-type gas spring oil seal 500, the plate-type gas spring oil seal 500 is fixed through a pressing piece 600, and the upper end part of the partition piston 300 is bent through rolling to form a bent part 700 so as to fix the pressing piece 600.
In the embodiment, the partition piston 300 is replaced by the integrated easily-installed gas spring oil seal which is integrally formed in a die and only comprises two components without assembly, so that the material cost and the processing cost are reduced, no assembly error exists, and the dimensional accuracy can be ensured; and the structure of integral type is simpler, easy installation.
As shown in fig. 2, the sealing body 100 may further include a boss 4 at a lower end portion of the sealing body 100 for coupling with a spring; specifically, one end of the spring is suitable for being sleeved on the boss 4 to position one end of the spring, and the height H of the boss 4 can be 1-5 mm; in the present embodiment, the height H of the boss 4 is 3 mm.
As shown in fig. 2, the backbone 200 is, for example and without limitation, a structure comprising a first axial extension 5, a first radial extension 6, a second axial extension 7, and a second radial extension 8; wherein the content of the first and second substances,
the lower end of the first axial extension 5 is connected to the outer side of the first radial extension 6;
the lower end of the second axial extension 7 is connected to the inner side of the first radial extension 6;
the upper end of the second axial extension 7 is connected to the outer side of the second radial extension 8; through set up on the skeleton 200 the primary shaft extends to portion 5, first radial extension 6, secondary shaft extension to portion 7 and the radial extension 8 of second, has increased the number of times of bending of skeleton 200, and then has strengthened greatly skeleton 200's support intensity can prevent integral type easily installs the air spring oil blanket and warp at the installation in compression, has avoided the integral type easily installs the air spring oil blanket and is damaged.
As shown in fig. 2, the first shaft extension portion 5 is embedded in the outer sealing portion 1 to support the outer sealing portion 1, so that the sealing protrusion 3 is in interference fit with the cylinder body;
the inner side of the second radial extension 8 extends into the lip 2.
As shown in fig. 2, the seal body 100 is provided therein with a fitting hole 9 into which a shaft body is inserted, and the seal lip is adapted to be in sealing abutment with the shaft body in the fitting hole 9;
the hole wall of the assembly hole 9 is surrounded on the outer side of the shaft body and is in clearance fit with the shaft body; specifically, the fit clearance between the hole wall of the assembly hole 9 and the shaft body can be 0.1-0.2 mm, and when the shaft body jumps in a large range, the hole wall of the assembly hole 9 can restrain and correct the shaft body so as to eliminate the jump of the shaft body; in this embodiment, the fit clearance between the hole wall of the fitting hole 9 and the shaft body is 0.15 mm.
As shown in fig. 2, at least two sealing lips may be disposed on the inner side of the lip 2 and arranged in sequence along the axial direction of the sealing body 100; wherein the content of the first and second substances,
a lubricating cavity 10 is arranged between two adjacent sealing lips, and the distance between the lip tips of the two adjacent sealing lips in the axial direction of the sealing main body 100 can be 1-2 mm; in the present embodiment, the distance between the lip tips of two adjacent sealing lips in the axial direction of the sealing main body 100 is 1.5 mm; the lubricating cavity 10 is suitable for coating and storing lubricating grease, lubricating oil and the like so as to play a lubricating role, and further the service life of the sealing lip can be prolonged. In this embodiment, the number of the sealing lips is two, so that a double seal can be formed with the shaft body, thereby improving the sealing effect.
As shown in fig. 2, the sealing protrusion 3 may have a circular arc-shaped structure in an axial cross section of the sealing body 100; specifically, the sealing protrusion 3 is equivalent to an O-ring 400 installed on the partition piston 300 in the prior art, and the O-ring 400 may axially shift relative to the partition piston 300, thereby affecting the sealing performance; the sealing bulge 3 in the embodiment can effectively solve the problem of the movement of the O-shaped ring 400, and the sealing effect is greatly improved after the sealing bulge 3 is in sealing and abutting contact with the cylinder body; more specifically, on the axial cross section of the sealing main body 100, the arc radius of the sealing protrusion 3 may be 0.5-3.5 mm; in the present embodiment, the radius of the arc of the sealing protrusion 3 is 2 mm.
As shown in fig. 2, two sealing protrusions 3 are arranged on the outer peripheral wall of the outer sealing part 1, one of the sealing protrusions 3 is arranged at the upper end of the outer peripheral wall of the outer sealing part 1, and the other sealing protrusion 3 is arranged at the lower end of the outer peripheral wall of the outer sealing part 1;
the distance between the two sealing bulges 3 is more than 2 mm; specifically, the upper and lower both ends of the periphery wall of outer sealing portion 1 set up one respectively sealed arch 3 to make two interval between sealed arch 3 is greater than 2mm, and its aim at works as sealed arch 3 with when the cylinder body butt was in order to form sealedly, reduce the radial beat of the easy installation air spring oil blanket of integral type can play fine support positioning effect.
As shown in fig. 2, the outer diameter D of the sealing body 100 may be 10 to 50 mm;
the diameter of the lip tip of the sealing lip can be 5-30 mm;
the height L of the sealing body 100 can be 4-20 mm; in this embodiment, the outer diameter D of the sealing body 100 is 30mm, and the height L of the sealing body 100 is 12 mm.
As shown in fig. 2 and 3, two sealing lips are provided, namely an upper sealing lip 11 and a lower sealing lip 12; wherein the content of the first and second substances,
the upper sealing lip 11 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of matching the lip tip of the upper sealing lip 11 with the shaft body can be 0.2-1.5 mm;
the lower sealing lip 12 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of the lip tip of the lower sealing lip 12 matched with the shaft body can be 0.2-0.6 mm;
the upper sealing lip 11 is provided with a first front lip angle A and a first rear lip angle B, the first front lip angle A is larger than the first rear lip angle B, the first front lip angle A can be 40-70 degrees, and the first rear lip angle B can be 15-35 degrees;
the lower seal lip 12 has a second front lip angle C and a second rear lip angle D, the second front lip angle C is greater than the second rear lip angle D, the second front lip angle C may be 55 ° to 75 °, and the second rear lip angle D may be 15 ° to 35 °;
the lip tip of the upper sealing lip 11 and the lip tip of the lower sealing lip 12 are respectively provided with a fillet, and the radius of each fillet is 0.1 mm;
in this embodiment, the diameter of the lip tip of the upper seal lip 11 is 17mm, the interference of the lip tip of the upper seal lip 11 with the shaft body is 0.8mm, the diameter of the lip tip of the lower seal lip 12 is 17.4mm, the interference of the lip tip of the lower seal lip 12 with the shaft body is 0.4mm, the first front lip angle a is 55 °, the first rear lip angle B is 25 °, the second front lip angle C is 65 °, and the second rear lip angle D is 25 °.
EXAMPLE III
As shown in fig. 1 to 3, an integrated easy-to-install gas spring oil seal comprises a seal main body 100 and a framework 200; wherein the content of the first and second substances,
the sealing body 100 comprises an outer sealing part 1 located at the outer side of the sealing body 100 and a lip part 2 located at the inner side of the sealing body 100;
the peripheral wall of the outer sealing part 1 is provided with at least one circle of sealing bulge 3;
the inner side part of the lip part 2 is provided with at least one sealing lip protruding inwards;
the frame 200 is embedded in the sealing body 100 to support the sealing body 100; in this embodiment, the integral type is easily installed gas spring oil blanket and is applied to in the gas spring, the gas spring includes cylinder body and axis body, the seal lip be suitable for with the sealed butt of axis body, sealed arch 3 be suitable for with the sealed butt of inner wall of cylinder body. The sealing body 100 and the framework 200 are both of annular structures, the sealing protrusion 3 and the sealing lip have good elasticity and can compensate each other in the radial direction, so that the sealing performance can be improved, and the interference of the sealing protrusion 3 and the cylinder body in sealing and abutting connection can be 0.25-0.35 mm; in the embodiment, the interference of the sealing bulge 3 and the cylinder body in sealing abutment is 0.35 mm.
In the prior art, a partition piston 300 is arranged between a cylinder body and a shaft body in the gas spring, the outer peripheral wall of the partition piston 300 is hermetically connected with the inner wall of the cylinder body through two O-shaped rings 400, the inner side part of the partition piston 300 is hermetically connected with the shaft body through a plate-type gas spring oil seal 500, the plate-type gas spring oil seal 500 is fixed through a pressing piece 600, and the upper end part of the partition piston 300 is bent through rolling to form a bent part 700 so as to fix the pressing piece 600.
In the embodiment, the partition piston 300 is replaced by the integrated easily-installed gas spring oil seal which is integrally formed in a die and only comprises two components without assembly, so that the material cost and the processing cost are reduced, no assembly error exists, and the dimensional accuracy can be ensured; and the structure of integral type is simpler, easy installation.
As shown in fig. 2, the sealing body 100 may further include a boss 4 at a lower end portion of the sealing body 100 for coupling with a spring; specifically, one end of the spring is suitable for being sleeved on the boss 4 to position one end of the spring, and the height H of the boss 4 can be 1-5 mm; in the present embodiment, the height H of the boss 4 is 5 mm.
As shown in fig. 2, the backbone 200 is, for example and without limitation, a structure comprising a first axial extension 5, a first radial extension 6, a second axial extension 7, and a second radial extension 8; wherein the content of the first and second substances,
the lower end of the first axial extension 5 is connected to the outer side of the first radial extension 6;
the lower end of the second axial extension 7 is connected to the inner side of the first radial extension 6;
the upper end of the second axial extension 7 is connected to the outer side of the second radial extension 8; through set up on the skeleton 200 the primary shaft extends to portion 5, first radial extension 6, secondary shaft extension to portion 7 and the radial extension 8 of second, has increased the number of times of bending of skeleton 200, and then has strengthened greatly skeleton 200's support intensity can prevent integral type easily installs the air spring oil blanket and warp at the installation in compression, has avoided the integral type easily installs the air spring oil blanket and is damaged.
As shown in fig. 2, the first shaft extension portion 5 is embedded in the outer sealing portion 1 to support the outer sealing portion 1, so that the sealing protrusion 3 is in interference fit with the cylinder body;
the inner side of the second radial extension 8 extends into the lip 2.
As shown in fig. 2, the seal body 100 is provided therein with a fitting hole 9 into which a shaft body is inserted, and the seal lip is adapted to be in sealing abutment with the shaft body in the fitting hole 9;
the hole wall of the assembly hole 9 is surrounded on the outer side of the shaft body and is in clearance fit with the shaft body; specifically, the fit clearance between the hole wall of the assembly hole 9 and the shaft body can be 0.1-0.2 mm, and when the shaft body jumps in a large range, the hole wall of the assembly hole 9 can restrain and correct the shaft body so as to eliminate the jump of the shaft body; in this embodiment, the fit clearance between the hole wall of the fitting hole 9 and the shaft body is 0.2 mm.
As shown in fig. 2, at least two sealing lips may be disposed on the inner side of the lip 2 and arranged in sequence along the axial direction of the sealing body 100; wherein the content of the first and second substances,
a lubricating cavity 10 is arranged between two adjacent sealing lips, and the distance between the lip tips of the two adjacent sealing lips in the axial direction of the sealing main body 100 can be 1-2 mm; in the present embodiment, the distance between the lip tips of two adjacent sealing lips in the axial direction of the sealing main body 100 is 2 mm; the lubricating cavity 10 is suitable for coating and storing lubricating grease, lubricating oil and the like so as to play a lubricating role, and further the service life of the sealing lip can be prolonged. In this embodiment, the number of the sealing lips is two, so that a double seal can be formed with the shaft body, thereby improving the sealing effect.
As shown in fig. 2, the sealing protrusion 3 may have a circular arc-shaped structure in an axial cross section of the sealing body 100; specifically, the sealing protrusion 3 is equivalent to an O-ring 400 installed on the partition piston 300 in the prior art, and the O-ring 400 may axially shift relative to the partition piston 300, thereby affecting the sealing performance; the sealing bulge 3 in the embodiment can effectively solve the problem of the movement of the O-shaped ring 400, and the sealing effect is greatly improved after the sealing bulge 3 is in sealing and abutting contact with the cylinder body; more specifically, on the axial cross section of the sealing main body 100, the arc radius of the sealing protrusion 3 may be 0.5-3.5 mm; in the present embodiment, the radius of the arc of the sealing protrusion 3 is 3.5 mm.
As shown in fig. 2, two sealing protrusions 3 are arranged on the outer peripheral wall of the outer sealing part 1, one of the sealing protrusions 3 is arranged at the upper end of the outer peripheral wall of the outer sealing part 1, and the other sealing protrusion 3 is arranged at the lower end of the outer peripheral wall of the outer sealing part 1;
the distance between the two sealing bulges 3 is more than 2 mm; specifically, the upper and lower both ends of the periphery wall of outer sealing portion 1 set up one respectively sealed arch 3 to make two interval between sealed arch 3 is greater than 2mm, and its aim at works as sealed arch 3 with when the cylinder body butt was in order to form sealedly, reduce the radial beat of the easy installation air spring oil blanket of integral type can play fine support positioning effect.
As shown in fig. 2, the outer diameter D of the sealing body 100 may be 10 to 50 mm;
the diameter of the lip tip of the sealing lip can be 5-30 mm;
the height L of the sealing body 100 can be 4-20 mm; in this embodiment, the outer diameter D of the sealing body 100 is 50mm, and the height L of the sealing body 100 is 20 mm.
As shown in fig. 2 and 3, two sealing lips are provided, namely an upper sealing lip 11 and a lower sealing lip 12; wherein the content of the first and second substances,
the upper sealing lip 11 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of matching the lip tip of the upper sealing lip 11 with the shaft body can be 0.2-1.5 mm;
the lower sealing lip 12 is suitable for being in sealing butt joint with a shaft body in the assembling hole 9, and the interference range of the lip tip of the lower sealing lip 12 matched with the shaft body can be 0.2-0.6 mm;
the upper sealing lip 11 is provided with a first front lip angle A and a first rear lip angle B, the first front lip angle A is larger than the first rear lip angle B, the first front lip angle A can be 40-70 degrees, and the first rear lip angle B can be 15-35 degrees;
the lower seal lip 12 has a second front lip angle C and a second rear lip angle D, the second front lip angle C is greater than the second rear lip angle D, the second front lip angle C may be 55 ° to 75 °, and the second rear lip angle D may be 15 ° to 35 °;
the lip tip of the upper sealing lip 11 and the lip tip of the lower sealing lip 12 are respectively provided with a fillet, and the radius of each fillet is 0.1 mm;
in this embodiment, the diameter of the lip tip of the upper seal lip 11 is 29.1mm, the interference of the lip tip of the upper seal lip 11 with the shaft body is 1.5mm, the diameter of the lip tip of the lower seal lip 12 is 30mm, the interference of the lip tip of the lower seal lip 12 with the shaft body is 0.6mm, the first front lip angle a is 70 °, the first rear lip angle B is 35 °, the second front lip angle C is 75 °, and the second rear lip angle D is 35 °.
The working principle of the utility model is as follows:
the easy installation air spring oil blanket of integral type is applied to in the air spring, the air spring includes cylinder body and axis body, the seal lip be suitable for with the sealed butt of axis body, sealed arch 3 be suitable for with the sealed butt of inner wall of cylinder body. The integrated easily-installed gas spring oil seal is integrally formed in a die, only comprises two components and does not need to be assembled, so that the material cost and the processing cost are reduced, no assembly error exists, and the dimensional precision can be ensured; and the structure of integral type is simpler, easy installation. In addition, the sealing bulge 3 and the sealing lip have good elasticity, and can compensate each other in the radial direction, so that the sealing performance can be improved.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (11)
1. An integrated easily-installed gas spring oil seal is characterized by comprising a seal main body (100) and a framework (200); wherein the content of the first and second substances,
the sealing body (100) comprises an outer sealing portion (1) located at an outer side of the sealing body (100) and a lip portion (2) located at an inner side of the sealing body (100);
the peripheral wall of the outer sealing part (1) is provided with at least one circle of sealing bulge (3);
the inner side part of the lip part (2) is provided with at least one sealing lip protruding inwards;
the frame (200) is embedded in the sealing body (100) to support the sealing body (100).
2. An integrated easy-to-install gas spring oil seal according to claim 1, wherein said seal body (100) further includes a boss (4) at a lower end of said seal body (100) for connection with a spring.
3. An integrated easy-to-install gas spring oil seal according to claim 1, wherein the skeleton (200) comprises a first axial extension (5), a first radial extension (6), a second axial extension (7) and a second radial extension (8); wherein the content of the first and second substances,
the lower end of the first axial extension (5) is connected with the outer side of the first radial extension (6);
the lower end of the second axial extension (7) is connected with the inner side of the first radial extension (6);
the upper end of the second axial extension (7) is connected to the outer side of the second radial extension (8).
4. An integrated easy installation gas spring oil seal as defined in claim 3,
the first shaft extension part (5) is embedded in the outer sealing part (1) to support the outer sealing part (1);
the inner side of the second radial extension (8) extends into the lip (2).
5. An integrated easy installation gas spring oil seal as defined in claim 1,
the sealing body (100) is provided with an assembly hole (9) for a shaft body to be inserted into, and the sealing lip is suitable for being in sealing butt joint with the shaft body in the assembly hole (9);
the hole wall of the assembly hole (9) surrounds the outer side of the shaft body and is in clearance fit with the shaft body.
6. An integrated easy-to-install gas spring oil seal according to claim 1, wherein the inner side portion of the lip portion (2) is provided with at least two sealing lips arranged in sequence along the axial direction of the seal body (100); wherein the content of the first and second substances,
a lubricating cavity (10) is arranged between two adjacent sealing lips.
7. An integrated easy-to-install gas spring oil seal according to claim 1, wherein the sealing protrusion (3) has an arc-shaped configuration in an axial cross section of the sealing main body (100).
8. An integrated easy installation gas spring oil seal as defined in claim 1,
be equipped with two on the periphery wall of external seal portion (1) sealed arch (3), one of them sealed arch (3) are located the upper end of the periphery wall of external seal portion (1), another sealed arch (3) are located the lower tip of the periphery wall of external seal portion (1).
9. An integrated easy to install gas spring oil seal according to claim 8,
the distance between the two sealing bulges (3) is more than 2 mm.
10. An integrated easy installation gas spring oil seal as defined in claim 1,
the outer diameter D of the sealing main body (100) is 10-50 mm;
and/or the diameter of the lip tip of the sealing lip is 5-30 mm;
and/or the height L of the sealing main body (100) is 4-20 mm.
11. An integrated easy-to-install gas spring oil seal according to claim 1, wherein the seal body (100) is provided therein with a fitting hole (9) into which a shaft body is inserted; the number of the sealing lips is two, namely an upper sealing lip (11) and a lower sealing lip (12); wherein the content of the first and second substances,
the upper sealing lip (11) is suitable for being in sealing butt joint with a shaft body in the assembling hole (9), and the interference magnitude of the lip tip of the upper sealing lip (11) matched with the shaft body is 0.2-1.5 mm;
and/or the lower sealing lip (12) is suitable for being in sealing butt joint with a shaft body in the assembling hole (9), and the interference magnitude of the lip tip of the lower sealing lip (12) matched with the shaft body is 0.2-0.6 mm;
and/or the upper sealing lip (11) is provided with a first front lip angle A and a first rear lip angle B, wherein the first front lip angle A is larger than the first rear lip angle B, the first front lip angle A is 40-70 degrees, and the first rear lip angle B is 15-35 degrees;
and/or the lower seal lip (12) has a second front lip angle C and a second rear lip angle D, the second front lip angle C is greater than the second rear lip angle D, the second front lip angle C is 55-75 degrees, and the second rear lip angle D is 15-35 degrees;
and/or the lip tip of the upper sealing lip (11) and the lip tip of the lower sealing lip (12) are respectively provided with a round angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120867916.2U CN214999042U (en) | 2021-04-25 | 2021-04-25 | Integrated easily-installed air spring oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120867916.2U CN214999042U (en) | 2021-04-25 | 2021-04-25 | Integrated easily-installed air spring oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214999042U true CN214999042U (en) | 2021-12-03 |
Family
ID=79091904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120867916.2U Active CN214999042U (en) | 2021-04-25 | 2021-04-25 | Integrated easily-installed air spring oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214999042U (en) |
-
2021
- 2021-04-25 CN CN202120867916.2U patent/CN214999042U/en active Active
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